11. The rotor support plate spring 70 may elastically support the rotor 30. The rotor 30 may be rotatably supported by the rotor support plate spring 70.

The base plate 20 may cover the open lower portion of the case 10. The base plate 20 may include a rotor shaft support hole 21 through which the rotor shaft 31 is rotatably supported. The base plate 20 may include a refrigerant inlet hole 23 connected to the refrigerant inlet pipe 100 through which the refrigerant flows. The base plate 20 may include a boss hole 25 in which the boss 80 is installed.

The boss 80 may be installed in the boss hole 25 of the base plate 20. An upper portion of the boss 80 may be arranged in the accommodation space 11. A lower portion of the boss 80 may be arranged outside the accommodation space 11.

The boss 80 may include a pad valve shaft hole 81 into which the pad valve shaft 51 is rotatably inserted.

The boss 80 may include the plurality of refrigerant inlet and outlet holes 82 through which the refrigerant flows in and out. Four refrigerant inlet and outlet holes 82 may be provided. Accordingly, four inlet and outlet pipes 200 connected to the plurality of refrigerant inlet and outlet holes 82 may be provided.

The boss 80 may include a plurality of insertion holes 83 into which the plurality of inlet and outlet pipes 200 is inserted. The plurality of insertion holes 83 may be connected to the plurality of refrigerant inlet and outlet holes 82.

The pad 90 may be rotatably arranged on the boss 80. The pad 90 may include a pad valve shaft coupling hole 91 to which the pad valve shaft 51 is coupled. The pad 90 may include a pad gear coupling hole 93 to which the pad coupling protrusion 53 of the pad gear 50 is coupled. Accordingly, the pad 90 may rotate together with the pad gear 50.

The pad 90 may include a first open cavity 951 provided to selectively open one of the refrigerant inlet and outlet holes 82 formed in the boss 80. The pad 90 may include a second open cavity 952.

That is, the pad 90 may rotate together with the pad gear 50 to selectively open one of the refrigerant inlet and outlet holes 82 formed in the boss 80.

The first open cavity 951 and the second open cavity 952 may be formed in the lower portion of the pad 90. The first open cavity 951 and the second open cavity 952 may be provided on the lower surface of the pad 90 and formed in the form of a groove recessed upward. The first open cavity 951 and the second open cavity 952 may be provided to extend to an edge of the pad 90 in a radial direction of the pad 90.

The first open cavity 951 may be provided to close the plurality of refrigerant inlet and outlet holes 82 and open an extending groove 825 of the boss 80 to be described later. In addition, the second open cavity 952 may be provided to open the extending groove 825 as well as the plurality of refrigerant inlet and outlet holes 82. Details of the first open cavity 951 and the second open cavity 952 will be described later.

The pad 90 may include a connection cavity 97 provided to selectively connect two adjacent refrigerant inlet and outlet holes among the plurality of refrigerant inlet and outlet holes 82 formed in the boss 80.

The connection cavity 97 may be formed in the lower portion of the pad 90. The connection cavity 97 may be provided on the lower surface of the pad 90 and formed in the form of a groove recessed upward. The connection cavity 97 may connect two adjacent refrigerant inlet and outlet holes among the plurality of refrigerant inlet and outlet holes 82.

The valve device 1 may further include a stator (not shown). The stator may be provided to surround a portion, in which the rotor 30 is arranged, from the outside of the case 10.

In addition, the valve device 1 may further include a bracket (not shown). The bracket may allow the case 10 and the stator to be coupled to each other. The bracket may allow the valve device 1 to be fixed to an external device.

Referring to FIG. 4, the boss 80 may include the plurality of refrigerant inlet and outlet holes 82 formed at a first position, which is spaced apart from the center, to communicate with the plurality of inlet and outlet pipes 200, respectively. In this case, being formed at the first position may mean that a center of the refrigerant inlet and outlet hole is formed at the first position.

The boss 80 may include the extending groove 825 connected to one of the plurality of refrigerant inlet and outlet holes 82 so as to extend radially outward from the first position to a second position.

The first position may be provided at a position away from the center of the boss 80 by a first distance R1 in a radial direction. Further, the second position may be provided at a position spaced apart from the center of the boss 80 by a second distance R2 in the radial direction. The second distance R2 may be greater than the first distance R1.

The extending groove 825 may include an opening member 8251 communicating with the accommodation space 11 by the first open cavity 951 of the pad 90 to receive a refrigerant. The extending groove 825 may include a connection member 8252 connected to the opening member 8251 to allow the refrigerant to flow into the refrigerant inlet and outlet hole.

Accordingly, that the extending groove 825 is formed at the second position may mean that the center of the opening member 8251 is formed at the second position.

That is, the refrigerant inlet and outlet hole may be formed at the first position, the opening member 8251 of the extending groove 825 may be formed at the second position, and the connection member 8252 of the extending groove 825 may extend between the first position and the second position.

The extending groove 825 may be formed by being recessed downward from the upper surface of the boss 80. Because the extending groove 825 does not completely penetrate the boss 80, the refrigerant introduced into the extending groove 825 may flow to a first refrigerant inlet and outlet hole 821 along the extending groove 825.

The pad 90 may include a sealing body 92.

The sealing body 92 may be provided in contact with the upper surface of the boss 80 to close the plurality of refrigerant inlet and outlet holes 82 and the extending groove 825 of the boss 80. The sealing body 92 may form a lower surface of the pad 90 and may be provided to protrude downward of the pad 90.

The pad 90 may include the first open cavity 951 and the second open cavity 952.

The first open cavity 951 and the second open cavity 952 may be cut from the outside of the pad 90 toward the inside of the pad 90. Particularly, the first open cavity 951 and the second open cavity 952 may be provided on one side of the sealing body 92.

The first open cavity 951 may be cut from the outside of the pad 90 toward the inside of the pad 90. The first open cavity 951 may be cut from the outside of the pad 90 to the second position in which the opening member 8251 of the boss 80 is arranged.

The second open cavity 952 may be cut from the outside to the inside of the pad 90. The second open cavity 952 may be cut from the outside of the pad 90 to the first position in which the plurality of refrigerant inlet and outlet holes 82 is arranged.

The first open cavity 951 may be provided to close the plurality of refrigerant inlet and outlet holes 82 and to open the opening member 8251 of the extending groove 825.

In addition, the second open cavity 952 may be provided to open the plurality of refrigerant inlet and outlet holes 82, the connection member 8252 and the opening member 8251 of the extending groove 825. The second open cavity 952 may have a size capable of selectively opening one of the plurality of refrigerant inlet and outlet holes 82. The second open cavity 952 may have a size incapable of simultaneously opening two refrigerant inlet and outlet holes 82 among the plurality of refrigerant inlet and outlet holes 82.

The first open cavity 951 and the second open cavity 952 of the pad 90 may be provided to communicate with the accommodation space 11 inside the case 10. Therefore, in a state in which the refrigerant flows into the accommodation space 11 through the refrigerant inlet pipe 100, the refrigerant may flow into the refrigerant inlet and outlet hole in response to opening the opening member 8251 of the extending groove 825 by the first open cavity 951.

In addition, in response to opening one of the plurality of refrigerant inlet and outlet holes 82 by the second open cavity 952, the refrigerant flowing into the accommodation space 11 may flow into one of the refrigerant inlet and outlet holes 82.

The pad 90 may include the connection cavity 97.

The connection cavity 97 may be formed at a position corresponding to the plurality of refrigerant inlet and outlet holes 82 of the boss 80. Particularly, the connection cavity 97 may be cut along the rotational direction of the pad 90 at the first position in which the plurality of refrigerant inlet and outlet holes 82 is formed. As described above, an opening angle of the connection cavity 97 may be provided to be approximately 90 degrees to open two adjacent refrigerant inlet and outlet holes among the plurality of refrigerant inlet and outlet holes 82.

FIGS. 8 to 14 are top views illustrating a state in which various modes are performed as the pad of the valve device according to an embodiment of the disclosure rotates on the top of the boss. FIG. 15 is a cross-sectional view schematically illustrating a state in which a simultaneous open mode is performed by the pad and the boss of FIG. 14.

Hereinafter a flow mode of the refrigerant according to the rotation of the pad 90 will be described with reference to FIGS. 8 to 14 and 15.

Referring to FIGS. 8 to 14, a refrigerant compressed in a compressor (not shown) may be transferred to a condenser C and then condensed. The refrigerant condensed in the condenser C may be transferred to capillary tubes CA1 and CA2 corresponding to expansion devices and then expanded. The refrigerant expanded in the capillary tubes CA1 and CA2 may be transferred to an evaporator E, and the refrigerant may generate cold air through the heat exchange in the evaporator E.

As for a refrigerator, the refrigerant condensed in the condenser C may be transferred to the capillary tubes CA1 and CA2. The refrigerant condensed in the condenser C may be directly transferred to the capillary tubes CA1 and CA2 or transferred to the capillary tubes CA1 and CA2 through a hot pipe H.

The hot pipe H may be a pipe that is installed to prevent the formation of dew on a gasket of a refrigerator door, which is a temperature-vulnerable part of the refrigerator. That is, a high-temperature refrigerant in a high-pressure part of the refrigeration cycle may pass through the hot pipe H to prevent the formation of dew on the gasket of the refrigerator door.

The hot pipe H only needs to maintain at a temperature greater than or equal to the dew point according to a humidity of the outside air, but when the temperature is maintained at the temperature greater than the dew point in the refrigerator, it acts as a heat load inside the refrigerator, thereby increasing the power consumption of the refrigerator. Therefore, according to operating conditions, the refrigerant condensed in the condenser C may be transferred to the capillary tubes CA1 and CA2 through the hot pipe H or directly transferred to the capillary tubes CA1 and CA2 without passing through the hot pipe H. For this, the valve device 1 may be installed to the outlet pipe through which the refrigerant condensed in the condenser C is discharged.

The capillary tubes CA1 and CA2 may include a first capillary tube CA1 and a second capillary tube CA2. The first capillary tube CA1 and the second capillary tube CA2 may have different inner diameters and different lengths. The first capillary tube CA1 may have a large inner diameter and a short length. That is, in a state in which the cooling load is high, it is possible to allow the refrigerant to flow into the first capillary tube CA1 having a small refrigerant flow resistance, and then to expand. The second capillary tube CA2 may have a smaller inner diameter and a longer length than that of the first capillary tube CA1. That is, in a state in which the cooling load is low, it is possible to allow the refrigerant to flow into the second capillary tube CA2 having a large refrigerant flow resistance and then to expand.

In addition, under a high load condition in which an external temperature or an internal temperature of the refrigerator is high, it may be required to increase a refrigerant flow rate to a maximum level in order to cool an internal space as quickly as possible. Accordingly, the refrigerant may flow into both the first capillary tube CA1 and the second capillary tube CA2 in order to secure the maximum refrigerant flow rate.

That is, by controlling the valve device 1 to allow the refrigerant to flow through the first capillary tube CA1 or the second capillary tube CA2 or allow the refrigerant to flow through both of the first capillary tube CA1 and the second capillary tube CA2 according to the cooling load, it is possible to perform efficient operation in a relatively wide cooling load range.

The refrigerant inlet pipe 100 may be connected to an outlet pipe of the condenser C. The refrigerant inlet pipe 100 may be connected to the accommodation space 11 inside the case 10 through the refrigerant inlet hole 23 (refer to FIGS. 2 and 7).

The boss 80 may include the first refrigerant inlet and outlet hole 821, a second refrigerant inlet and outlet hole 822, a third refrigerant inlet and outlet hole 823, and a fourth refrigerant inlet and outlet hole 824. The extending groove 825 may be provided to be connected to the first refrigerant inlet and outlet hole 821.

The second refrigerant inlet and outlet hole 822, the third refrigerant inlet and outlet hole 823, and the fourth refrigerant inlet and outlet hole 824 may be arranged to be spaced apart from each other at intervals of 90 degrees clockwise from the first refrigerant outlet hole 821 with respect to the center of the boss 80.

The plurality of inlet and outlet pipes 200 may include a first inlet and outlet pipe 210 connected to the first refrigerant inlet and outlet hole 821, a second inlet and outlet pipe 220 connected to the second refrigerant inlet and outlet hole 822, a third inlet and outlet pipe 230 connected to the third refrigerant inlet and outlet hole 823 and a fourth inlet and outlet pipe 240 connected to the fourth refrigerant inlet and outlet hole 824.

The first inlet and outlet pipe 210 and the third inlet and outlet pipe 230 may be connected to the hot pipe H. The refrigerant may flow into the first inlet and outlet pipe 210 and flow out to the third inlet and outlet pipe 230 through the hot pipe H. Alternatively, the refrigerant may flow into the third inlet and outlet pipe 230 and may flow out into the first inlet and outlet pipe 210 through the hot pipe H.

The fourth inlet and outlet pipe 240 may be connected to the first capillary tube CA1. The second inlet and outlet pipe 220 may be connected to the second capillary tube CA2.

As illustrated in FIG. 8, in response to the second open cavity 952 of the pad 90 being arranged at a position of opening the first refrigerant inlet and outlet hole 821, only the first refrigerant inlet and outlet hole 821 may be opened by the second open cavity 952.

The second refrigerant inlet and outlet hole 822 may be closed by the pad 90. Particularly, the second refrigerant inlet and outlet hole 822 may be closed by the sealing body 92 of the pad 90. The third refrigerant inlet and outlet hole 823 and the fourth refrigerant inlet and outlet hole 824 may be connected through the connection cavity 97 of the pad 90.

Accordingly, the refrigerant introduced into the refrigerant inlet pipe 100 from the condenser C may be introduced into the accommodation space 11 through the refrigerant inlet hole 23. The introduced refrigerant may flow out to the first inlet and outlet pipe 210 through the first refrigerant inlet and outlet hole 821 opened by the second open cavity 952 of the pad 90. The refrigerant flowing out to the first inlet and outlet pipe 210 may be introduced into the third inlet and outlet pipe 230 through the hot pipe H. The refrigerant introduced into the third inlet and outlet pipe 230 may flow out to the fourth inlet and outlet pipe 240 through the fourth refrigerant inlet and outlet hole 824 connected to the third refrigerant inlet and outlet hole 823 by the connection cavity 97. The refrigerant flowing out to the fourth inlet and outlet pipe 240 may be introduced into the first capillary tube CA1. The refrigerant introduced into the first capillary tube CA1 and expanded may be transferred to the evaporator E, and may generate cold air through the heat exchange in the evaporator E.

FIG. 8 illustrates that the first capillary tube CA1 and the second capillary tube CA2 are connected to a single evaporator E, but is not limited thereto. That is, two evaporators E may be provided. Based on two evaporators E being provided, the first capillary tube CA1 and the second capillary tube CA2 may be connected to a different evaporator E, respectively.

As illustrated in FIG. 9, in response to the pad 90 rotating at a predetermined angle in the clockwise direction with respect to the center of the boss 80 in the state of FIG. 8, the refrigerant condensed in the condenser C may be introduced into the second capillary tube CA2 without passing through the hot pipe H, and then expanded. The refrigerant expanded in the second capillary tube CA2 may be transferred to the evaporator E, and may generate cold air through the heat exchange in the evaporator E.

The second open cavity 952 of the pad 90 may be positioned to open the second refrigerant inlet and outlet hole 822. In response to the second open cavity 952 being arranged at a position of the second refrigerant inlet and outlet hole 822, the second refrigerant inlet and outlet hole 822 may be opened by the second open cavity 952. The first refrigerant inlet and outlet hole 821 and the third refrigerant inlet and outlet hole 823 may be closed by the pad 90.

The refrigerant introduced from the condenser C to the refrigerant inlet pipe 100 may be introduced into the accommodation space 11 through the refrigerant inlet hole 23. The introduced refrigerant may flow out to the second inlet and outlet pipe 220 through the second refrigerant inlet and outlet hole 822 opened by the second open cavity 952 of the pad 90. The refrigerant flowing out to the second inlet and outlet pipe 220 may be introduced into the second capillary tube CA2. The refrigerant introduced into the second capillary tube CA2 and expanded may be transferred to the evaporator E, and may generate cold air through the heat exchange in the evaporator E.

FIG. 9 illustrates that the first capillary tube CA1 and the second capillary tube CA2 are connected to a single evaporator E, but is not limited thereto. That is, two evaporators E may be provided. Based on two evaporators E being provided, the first capillary tube CA1 and the second capillary tube CA2 may be connected to a different evaporator E, respectively. In this case, because the first refrigerant inlet and outlet hole 821 and the third refrigerant inlet and outlet hole 823 are closed, the refrigerant may be prevented from flowing into the first inlet and outlet pipe 210 and the third inlet and outlet pipe 230.

As illustrated in FIG. 10, in response to the pad 90 rotating at a predetermined angle in the clockwise direction with respect to the center of the boss 80 in the state of FIG. 9, the refrigerant condensed in the condenser C may be introduced into the second capillary tube CA2 without passing through the hot pipe H, and then expanded, which is the same as the flow of the refrigerant shown in FIG. 9.

However, as the connection cavity 97 of the pad 90 is arranged to connect the first refrigerant inlet and outlet hole 821 to the fourth refrigerant inlet and outlet hole 824, the refrigerant remaining in the first inlet and outlet pipe 210 connected to the first refrigerant inlet and outlet hole 821 may be recovered through the fourth inlet and outlet pipe 240. The recovered refrigerant may pass through the first capillary tube CA1 and be mixed with the refrigerant passing through the second capillary tube CA2, thereby flowing into the evaporator E.

As illustrated in FIG. 11, in response to the pad 90 rotating at a predetermined angle in the clockwise direction with respect to the center of the boss 80 in the state of FIG. 10, the refrigerant condensed in the condenser C may not flow.

Particularly, the second open cavity 952 of the pad 90 may be positioned to open the third refrigerant inlet and outlet hole 823. At the same time, the pad 90 may be positioned to close the second refrigerant inlet and outlet hole 822 and the fourth refrigerant inlet and outlet hole 824. The connection cavity 97 of the pad 90 may communicate with the first refrigerant inlet and outlet hole 821.

The third inlet and outlet pipe 230 connected to the third refrigerant inlet and outlet hole 823 may be connected to the first inlet and outlet pipe 210 connected to the first refrigerant inlet and outlet hole 821 through the hot pipe H. However, because the connection cavity 97 does not communicate with the outside, the first refrigerant inlet and outlet hole 821 is provided in a closed state.

Therefore, the refrigerant may not flow to any of the plurality of inlet and outlet pipes 200.

As illustrated in FIG. 12, in response to the pad 90 rotating at a predetermined angle in the clockwise direction with respect to the center of the boss 80 in the state of FIG. 11, the refrigerant condensed in the condenser C may be introduced into the second capillary tube CA2 by passing through the hot pipe H, and then expanded. The refrigerant expanded in the second capillary tube CA2 may be transferred to the evaporator E, and may generate cold air through the heat exchange in the evaporator E.

Referring to FIG. 12, the second open cavity 952 of the pad 90 may be arranged at a position of the third refrigerant inlet and outlet hole 823. In this case, the third refrigerant inlet and outlet hole 823 may be opened by the second open cavity 952. The fourth refrigerant inlet and outlet hole 824 may be closed by the pad 90. The first refrigerant inlet and outlet hole 821 and the second refrigerant inlet and outlet hole 822 may be connected by the connection cavity 97.

The refrigerant introduced from the condenser C to the refrigerant inlet pipe 100 may be introduced into the accommodation space 11 through the refrigerant inlet hole 23. The introduced refrigerant may be introduced into the third inlet and outlet pipe 230 through the third refrigerant inlet and outlet hole 823 opened by the second open cavity 952 of the pad 90. The refrigerant flowing out to the third inlet and outlet pipe 230 may be introduced into the first inlet and outlet pipe 210 through the hot pipe H.

The refrigerant introduced into the first inlet and outlet pipe 210 may flow out to the second inlet and outlet pipe 220 through the second refrigerant inlet and outlet hole 822 connected to the first refrigerant inlet and outlet hole 821 by the connection cavity 97. The refrigerant flowing out to the second inlet and outlet pipe 220 may be introduced into the second capillary tube CA2. The refrigerant introduced into the second capillary tube CA2 and expanded may be transferred to the evaporator E, and may generate cold air through the heat exchange in the evaporator E.

FIG. 12 illustrates that the first capillary tube CA1 and the second capillary tube CA2 are connected to a single evaporator E, but is not limited thereto. That is, two evaporators E may be provided. Based on two evaporators E being provided, the first capillary tube CA1 and the second capillary tube CA2 may be connected to a different evaporator E, respectively.

As illustrated in FIG. 13, the refrigerant condensed in the condenser C may be introduced into the first capillary tube CA1 without passing through the hot pipe H, and then expanded. The refrigerant expanded in the first capillary tube CA1 may be transferred to the evaporator E, and may generate cold air through the heat exchange in the evaporator E.

In response to the pad 90 rotating at a predetermined angle in the clockwise direction with respect to the center of the boss 80 in the state of FIG. 12, the second open cavity 952 may be arrange at a position of the fourth refrigerant inlet and outlet hole 824. That is, the fourth refrigerant inlet and outlet hole 824 may be opened by the second open cavity 952. The first refrigerant inlet and outlet hole 821 and the third refrigerant inlet and outlet hole 823 may be closed by the pad 90.

The refrigerant introduced from the condenser C to the refrigerant inlet pipe 100 may be introduced into the accommodation space 11 through the refrigerant inlet hole 23. The introduced refrigerant may flow out to the fourth inlet and outlet pipe 240 through the fourth refrigerant inlet and outlet hole 824 opened by the second open cavity 952 of the pad 90. The refrigerant flowing out to the fourth inlet and outlet pipe 240 may be introduced into the first capillary tube CA1. The refrigerant introduced into the first capillary tube CA1 and expanded may be transferred to the evaporator E, and may generate cold air through the heat exchange in the evaporator E.

FIG. 13 illustrates that the first capillary tube CA1 and the second capillary tube CA2 are connected to a single evaporator E, but is not limited thereto. That is, two evaporators E may be provided. Based on two evaporators E being provided, the first capillary tube CA1 and the second capillary tube CA2 may be connected to a different evaporator E, respectively. In this case, because the first refrigerant inlet and outlet hole 821 and the third refrigerant inlet and outlet hole 823 are closed, the refrigerant may be prevented from flowing into the first inlet and outlet pipe 210 and the third inlet and outlet pipe 230.

As illustrated in FIGS. 14 and 15, the refrigerant condensed in the condenser C may be introduced into the first capillary tube CA1 and the second capillary tube CA2 by passing through the hot pipe H, and then expanded. The refrigerant expanded in the first capillary tube CA1 and the second capillary tube CA2 may be transferred to the evaporator E, and may generate cold air through the heat exchange in the evaporator E.

In response to the pad 90 rotating at a predetermined angle in the clockwise direction with respect to the center of the boss 80 in the state of FIG. 13, the first open cavity 951 may be arranged at a position of the opening member 8251 of the extending groove 825 and the second open cavity 952 may be arranged at a position of the fourth refrigerant inlet and outlet hole 824. That is, the opening member 8251 of the extending groove 825 may be opened by the first open cavity 951, and the fourth refrigerant inlet and outlet hole 824 may be opened by the second open cavity 952. The third refrigerant inlet and outlet hole 823 may be connected to the fourth refrigerant inlet and outlet hole 824 by the connection cavity 97 of the pad 90.

The refrigerant introduced from the condenser C to the refrigerant inlet pipe 100 may be introduced into the accommodation space 11 through the refrigerant inlet hole 23.

The introduced refrigerant may flow to the first refrigerant inlet and outlet hole 821 through the extending groove 825 opened by the first open cavity 951 of the pad 90. Particularly, the opening member 8251 of the extending groove 825 may be opened by the first open cavity 951, and the refrigerant may flow through the connection member 8252 connected to the opening member 8251. The refrigerant flowing to the connection member 8252 may flow into the first refrigerant inlet and outlet hole 821 and then may flow out to the first inlet and outlet pipe 210 connected to the first refrigerant inlet and outlet hole 821.

The refrigerant flowing out to the first inlet and outlet pipe 210 may flow to the third inlet and outlet pipe 230 through the hot pipe H. The refrigerant flowing out to the third refrigerant inlet and outlet hole 823 through the third inlet and outlet pipe 230 may flow to the second refrigerant inlet and outlet hole 822 connected through the connection cavity 97 and flow to the second inlet and outlet pipe 220.

The refrigerant flowing to the second inlet and outlet pipe 220 may be introduced into the second capillary tube CA2. The refrigerant introduced into the second capillary tube CA2 and expanded may be transferred to the evaporator E, and may generate the cold air through heat exchange in the evaporator E.

At the same time, the refrigerant flowing into the accommodation space 11 may flow out to the fourth inlet and outlet pipe 240 through the fourth refrigerant inlet and outlet hole 824 opened by the second open cavity 952 of the pad 90. The refrigerant flowing out to the fourth inlet and outlet pipe 240 may be introduced into the first capillary tube CA1. The refrigerant introduced into the first capillary tube CA1 and expanded may be transferred to the evaporator E, and may generate the cold air through heat exchange in the evaporator E.

FIGS. 14 and 15 illustrate that the first capillary tube CA1 and the second capillary tube CA2 are connected to a single evaporator E, but is not limited thereto. That is, two evaporators E may be provided. Based on two evaporators E being provided, the first capillary tube CA1 and the second capillary tube CA2 may be connected to a different evaporator E, respectively. In this case, because the first refrigerant inlet and outlet hole 821 and the third refrigerant inlet and outlet hole 823 are closed, the refrigerant may be prevented from flowing into the first inlet and outlet pipe 210 and the third inlet and outlet pipe 230.

Therefore, in the mode according to FIGS. 14 and 15, the simultaneous open mode, in which the refrigerant flows into both the first capillary tube CA1 and the second capillary tube CA2, is performed and the refrigerant passes through the hot pipe H.

FIG. 16 is a view illustrating a pad and a boss according to another embodiment of the valve device according to an embodiment of the disclosure. FIG. 17 is a top view illustrating a state in which a simultaneous open mode is performed by the pad and the boss of FIG. 16.

As illustrated in FIGS. 16 and 17, the boss 80 may include the plurality of refrigerant inlet and outlet holes 82 formed at the first position spaced apart from the center to communicate with the plurality of inlet and outlet pipes 200, respectively. In this case, being formed at the first position may mean that the center of the refrigerant inlet and outlet hole is formed at the first position.

The boss 80 may include an extending groove 825a connected to one of the plurality of refrigerant inlet and outlet holes 82 so as to extend radially outward from the first position to the second position.

The first position may be provided at a position away from the center of the boss 80 by a first distance R1 in a radial direction. Further, the second position may be provided at a position spaced apart from the center of the boss 80 by a second distance R2 in the radial direction. The second distance R2 may be greater than the first distance R1.

The extending groove 825a may include an opening member 8251a communicating with the accommodation space 11 by a second open cavity 952a of a pad 90a to receive a refrigerant. The extending groove 825a may include a connection member 8252a connected to the opening member 8251a to allow the refrigerant to flow into the refrigerant inlet and outlet hole.

Accordingly, that the extending groove 825a is formed at the second position may mean that the center of the opening member 8251a is formed at the second position.

That is, the refrigerant inlet and outlet hole may be formed at the first position, the opening member 8251a of the extending groove 825a may be formed at the second position. The connection member 8252a of the extending groove 825a may extend between the first position and the second position.

The extending groove 825a may be formed by being recessed downward from the upper surface of the boss 80. Because the extending groove 825a does not completely penetrate the boss 80, the refrigerant introduced into the extending groove 825a may flow to the second refrigerant inlet and outlet hole 822 along the extending groove 825a.

The boss 80 according to another embodiment of the valve device according to an embodiment of the disclosure may be provided such that the extending groove 825a is connected to the second refrigerant inlet and outlet hole 822, unlike the boss 80 according to an embodiment. This is because the second open cavity 952a and a first open cavity 951a of the pad 90a, which will be described later, are separately formed.

The pad 90 may include a sealing body 92a.

The sealing body 92a may be provided in contact with the upper surface of the boss 80 to close the plurality of refrigerant inlet and outlet holes 82 and the extending groove 825a of the boss 80. The sealing body 92a may form a lower surface of the pad 90a and may be provided to protrude downward of the pad 90a.

The pad 90a may include the second open cavity 952a and the first open cavity 951a.

The second open cavity 952a and the first open cavity 951a may be cut from the outside of the pad 90a toward the inside of the pad 90a. Particularly, the second open cavity 952a and the first open cavity 951a may be provided on one side and the other side of the sealing body 92a, respectively.

The second open cavity 952a may be cut from the outside of the pad 90a toward the inside of the pad 90a. The second open cavity 952a may be cut from the outside of the pad 90a to the second position in which the opening member 8251a of the boss 80 is arranged.

The first open cavity 951a may be cut from the outside to the inside of the pad 90a. The first open cavity 951a may be cut from the outside of the pad 90a to the first position in which the plurality of refrigerant inlet and outlet holes 82 is arranged.

The second open cavity 952a may be provided to close the plurality of refrigerant inlet and outlet holes 82 and to open the opening member 8251a of the extending groove 825a.

In addition, the first open cavity 951a may be provided to open the plurality of refrigerant inlet and outlet holes 82, the connection member 8252a and the opening member 8251a of the extending groove 825a. The first open cavity 951a may have a size capable of selectively opening one of the plurality of refrigerant inlet and outlet holes 82. The first open cavity 951a may have a size incapable of simultaneously opening two refrigerant inlet and outlet holes among the plurality of refrigerant inlet and outlet holes 82.

The second open cavity 952a and the first open cavity 951a of the pad 90a may be provided to communicate with the accommodation space 11 inside the case 10. Therefore, in a state in which the refrigerant flows into the accommodation space 11 through the refrigerant inlet pipe 100, the refrigerant may flow into the refrigerant inlet and outlet hole in response to opening the opening member 8251a of the extending groove 825a by the second open cavity 952a.

In addition, in response to opening one of the plurality of refrigerant inlet and outlet holes 82 by the first open cavity 951a, the refrigerant flowing into the accommodation space 11 may flow into one of the refrigerant inlet and outlet holes 82.

Unlike the pad 90a according to an embodiment of the disclosure, the second open cavity 952a and the first open cavity 951a may be formed separately in the pad 90a according to another embodiment of the valve device according to an embodiment of the disclosure. Particularly, the second open cavity 952a and the first open cavity 951a may be formed at positions facing each other. The second open cavity 952a and the first open cavity 951a may be provided not to be connected to each other.

The pad 90 may include a connection cavity 97a.

The connection cavity 97a may be formed at a position corresponding to the plurality of refrigerant inlet and outlet holes 82 of the boss 80. Particularly, the connection cavity 97a may be cut along the rotational direction of the pad 90a at the first position in which the plurality of refrigerant inlet and outlet holes 82 is formed. As described above, an opening angle of the connection cavity 97a may be provided to be approximately 90 degrees to open two adjacent refrigerant inlet and outlet holes among the plurality of refrigerant inlet and outlet holes 82.

As illustrated in FIG. 17, in the simultaneous open mode, the refrigerant introduced through the refrigerant inlet pipe 100 may flow through the first capillary tube CA1 and the second capillary tube CA2, but bypass the hot pipe H.

In this case, the first cavity may be positioned to open the opening member 8251a of the extending groove 825a connected to the second refrigerant inlet and outlet hole 822. Further, the second cavity may be positioned to open the fourth refrigerant inlet and outlet hole 824. The second refrigerant inlet and outlet hole 822 and the third inlet and outlet hole may be connected through the connection cavity 97a. The first refrigerant inlet and outlet hole 821 may be provided to be closed by the sealing body 92a of the pad 90a.

Accordingly, the refrigerant flowing into the accommodation space 11 inside the case 10 through the refrigerant inlet pipe 100 may be introduced into the second refrigerant inlet and outlet hole 822 by passing through the connection member 8252a through the opening member 8251a of the extending groove 825a opened by the second open cavity 952a. The refrigerant introduced into the second refrigerant inlet and outlet hole 822 may flow into the second capillary tube CA2 through the second inlet and outlet pipe 220. Although the second refrigerant inlet and outlet hole 822 and the third refrigerant inlet and outlet hole 823 are connected by the connection cavity 97a, the refrigerant may not flow into the third refrigerant inlet and outlet hole 823 because the third refrigerant inlet and outlet hole 823, and the first refrigerant inlet and outlet hole 821 connected to the third inlet and outlet pipe 230, the hot pipe H, and the first inlet and outlet pipe 210 are closed.

In addition, the refrigerant flowing into the accommodation space 11 inside the case 10 through the refrigerant inlet pipe 100 may be introduced into the fourth refrigerant inlet and outlet hole 824 opened by the first open cavity 951a, and the refrigerant introduced into the fourth refrigerant inlet and outlet hole 824 may flow into the first capillary tube CA1 through the fourth inlet and outlet pipe 240.

The refrigerant introduced into the first capillary tube CA1 and the second capillary tube CA2 and expanded may be transferred to the evaporator E, and may generate cold air through the heat exchange in the evaporator E.

FIG. 17 illustrates that the first capillary tube CA1 and the second capillary tube CA2 are connected to a single evaporator E, but is not limited thereto. That is, two evaporators E may be provided. Based on two evaporators E being provided, the first capillary tube CA1 and the second capillary tube CA2 may be connected to a different evaporator E, respectively

Therefore, in the mode illustrated in FIGS. 16 and 17, the simultaneous open mode, in which the refrigerant flows into both the first capillary tube CA1 and the second capillary tube CA2, is performed, and the refrigerant may bypass the hot pipe H.

Accordingly, as a single valve device, the valve device according to an embodiment of the disclosure may selectively pass or bypass the hot pipe H while performing the simultaneous open mode of using both of the first capillary tube CA1 and the second capillary tube CA2.

Accordingly, it is possible to simplify the structure of the pipe, and thus it is possible to increase cost reduction and space utilization.

FIG. 18 is an exploded perspective view illustrating a partial configuration of the valve device according to another embodiment of the disclosure. FIG. 19 is a top view illustrating a pinion gear, a first pad gear, and a second pad gear of FIG. 18.

As illustrated in FIGS. 18 and 19, the valve device may include a pinion gear 40b, a first pad gear 51b, a second pad gear 52b, a first pad 91b rotated by the first pad gear 51b, and a second pad 92b rotated by the second pad gear 52b.

The valve device may include a first boss 81b arranged under the first pad 91b and a second boss 82b arranged under the second pad 92b.

The pinion gear 40b may include a toothed member 401b. The toothed member 401b may be meshed with the first pad gear 51b and the second pad gear 52b positioned on opposite sides of the pinion gear 40b, so as rotate the first pad gear 51b and the second pad gear 52b.

The first pad gear 51b may include a first engaging member 511b meshed with the toothed member 401b of the pinion gear 40b. The second pad gear 52b may include a second engaging member 521b meshed with the toothed member 401b of the pinion gear 40b. The first pad gear 51b and the second pad gear 52b may be provided to be rotated in opposite directions according to the rotation of the pinion gear 40b.

The first pad gear 51b may include a first pad valve shaft 512b. The first pad valve shaft 512b may be provided to pass through the first pad 91b.

The second pad gear 52b may include a second pad valve shaft 522b. The second pad valve shaft 522b may be provided to pass through the second pad 92b.

The first pad 91b may include a first pad valve shaft coupling hole 911b. The first pad valve shaft 512b of the first pad gear 51b may be provided to pass through the first pad valve shaft coupling hole 911b of the first pad 91b.

The second pad 92b may include a second pad valve shaft coupling hole 921b. The second pad valve shaft 522b of the second pad gear 52b may be provided to pass through the second pad valve shaft coupling hole 921b of the second pad 92b.

The first pad 91b may include a first open cavity 913b and a connection cavity 914b.

The first open cavity 913b may be provided to open one of the plurality of refrigerant inlet and outlet holes 811b, 812b, 813b, and 814b of the first boss 81b, which will be described later. The first open cavity 913b may be opened by being cut from the outside to the inside of the first pad 91b. Accordingly, the refrigerant introduced into the accommodation space 11 may flow into the first open cavity 913b.

The connection cavity 914b may be provided in the shape of a groove recessed upward from the lower surface of the pad. The connection cavity 914b may be provided to connect two adjacent refrigerant inlet and outlet holes among the plurality of refrigerant inlet and outlet holes 811b, 812b, 813b, and 814b of the first boss 81b to be described later. Because the connection cavity 914b is not opened to the outside of the pad, the refrigerant flowing into the accommodation space 11 may not directly flow into the connection cavity 914b.

The first boss 81b may include the plurality of refrigerant inlet and outlet holes 811b, 812b, 813b, and 814b. The plurality of refrigerant inlet and outlet holes 811b, 812b, 813b, and 814b may include a first refrigerant inlet and outlet hole 811b, a second refrigerant inlet and outlet hole 812b, a third refrigerant inlet and outlet hole 813b, and a fourth refrigerant inlet and outlet hole 814b. The plurality of refrigerant inlet and outlet holes 811b, 812b, 813b, and 814b may be arranged to be spaced apart from each other at intervals of 90 degrees. In addition, the plurality of refrigerant inlet and outlet holes 811b, 812b, 813b, and 814b may be arranged at positions spaced apart from the center of the first boss 81b by the same distance in the radial direction.

The plurality of refrigerant inlet and outlet holes 811b, 812b, 813b, and 814b may be connected to a plurality of inlet and outlet pipes. Particularly, the first refrigerant inlet and outlet hole 811b may be connected to a first inlet and outlet pipe 210b, the second refrigerant inlet and outlet hole 812b may be connected to a second inlet and outlet pipe 220b, the third refrigerant inlet and outlet hole 813b may be connected to a third inlet and outlet pipe 230b, and the fourth refrigerant inlet and outlet hole 814b may be connected to a fourth inlet and outlet pipe 240b.

The first inlet and outlet pipe 210b and the third inlet and outlet pipe 230b may be connected with the hot pipe H interposed therebetween. The fourth inlet and outlet pipe 240b may be connected to the first capillary tube CA1. The second inlet and outlet pipe 220b may be connected to the second capillary tube CA2.

The second pad 92b may include a second open cavity 923b.

The second open cavity 923b may be provided to open a refrigerant flow hole 821b of the second boss 82b to be described later. The second open cavity