JP7436936B1 - Flow path switching valve and refrigeration cycle device - Google Patents

Abstract

The present invention provides a flow path switching valve that can simplify the structure of a refrigerant flow path in a valve body and facilitate processing.
[Solution] A flow path switching valve 18 is rotatably accommodated in a housing body 25 having a hollow portion therein, and is changed into a first posture and a second posture by being rotated. A switchable valve body 60 is formed in the container 25, and a first opening P1, a second opening P2, and a third opening P3 are formed in the container 25, and communicate the hollow part with the outside of the container 25. The first recesses 61, 61A, and 61B connect the first opening P1 and the second opening P2 in the posture, and connect the first opening P1 and the third opening P3 in the second posture. It is formed on the outer surface of 60.
[Selection diagram] Figure 4

Description

The present disclosure relates to a flow path switching valve and a refrigeration cycle device.

Patent Document 1 discloses an air conditioner that switches between cooling and heating. This air conditioner includes a flow path switching valve that switches the refrigerant discharged from the compressor to either an outdoor heat exchanger or an indoor heat exchanger. The flow path switching valve of Patent Document 1 includes a switching valve main body that functions as a casing, and a valve body rotatably housed inside the switching valve main body.

The switching valve body has a first connection port to which the discharge side piping of the compressor is connected, a second connection port to which the inlet side piping of the indoor heat exchanger is connected, and an outlet side piping of the indoor heat exchanger is connected. a third connection port to which the suction side piping of the compressor is connected, a fifth connection port to which the outlet side piping of the outdoor heat exchanger is connected, and an inlet side of the outdoor heat exchanger. A sixth connection port is formed to which piping is connected.

The valve body has a connection port that connects the first connection port and the sixth connection port, and the third connection port and the fourth connection port during cooling operation, and connects the second connection port and the fifth connection port to a throttle passage. During heating operation, the first connection port and the second connection port, the fourth connection port and the fifth connection port communicate with each other, and the third connection port and the sixth connection port are throttled. A plurality of communication passages are formed that communicate through the passages.

JP2011-202738A

The flow path switching valve described in Patent Document 1 is difficult to process because a plurality of communication passages are formed passing through the valve body, and the structure of the communication passages is also complicated.
An object of the present disclosure is to provide a flow path switching valve and a refrigeration cycle device that can simplify the structure of a refrigerant flow path in a valve body and facilitate processing.

(1) The flow path switching valve of the present disclosure includes a container having a hollow portion inside;
a valve body rotatably housed in the hollow portion and switched between a first attitude and a second attitude by being rotated;
A first opening, a second opening, and a third opening communicating between the hollow part and the outside of the housing are formed in the housing,
A first recess that connects the first opening and the second opening in the first attitude and connects the first opening and the third opening in the second attitude is the valve body. is formed on the outer surface of the

According to the above configuration, the valve body of the flow path switching valve is only formed with a concave portion with a concave outer surface instead of a penetrating hole, which simplifies the refrigerant flow path and makes it easier to process the valve body. It can be done easily.

(2) In the flow path switching valve of (1), the first opening allows refrigerant discharged from a compressor of the refrigerant circuit to flow into the container,
A leakage portion is formed in the container to allow the refrigerant flowing from the first opening to leak between an inner surface of the container and an outer surface of the valve body.

According to the above configuration, the pressure of the refrigerant leaked from the leakage portion can be distributed and applied to the entire valve body. Therefore, the load torque for rotating the valve body can be reduced compared to the case where the pressure of the refrigerant is applied concentratedly to a specific location of the valve body.

(3) In the flow path switching valve according to (1) or (2), an adjustment section that adjusts the pressing force of the outer surface of the valve body against the inner surface of the container around the first to third openings. It also has more.

According to the above configuration, the load torque for rotating the valve body can be appropriately adjusted.

(4) In the flow path switching valve of (3) above, the adjustment portion includes a pressing body that is screwed to the housing body and presses the valve body toward the inner surface of the housing body.

According to the above configuration, the pressing force of the outer surface of the valve body against the inner surface of the container can be easily adjusted by screwing the pressing member into the container.

(5) In the flow path switching valve according to any one of (1) to (4), a fourth opening communicating between the hollow part and the outside of the container is formed in the container,
A second recess that connects the third opening and the fourth opening in the first attitude and connects the second opening and the fourth opening in the second attitude is the valve body. is formed on the outer surface of the

According to the above configuration, even in the flow path switching valve in which the first to fourth openings are formed, the refrigerant flow path can be simplified and the valve body can be easily processed.

(6) In the flow path switching valve of (5), the first to fourth openings are arranged within a projected area of the valve body in one direction.

According to the above configuration, since the first to fourth openings are arranged in a concentrated manner within a small area, the first and second recesses of the valve body that connect these openings can be made small, and the valve body can be processed. can be done more easily.

(7) In the flow path switching valve according to (5) or (6), the first recess that communicates the first opening and the second opening in the first attitude, and the first recess that communicates with the second opening in the first attitude, The first recess that communicates the first opening and the third opening is individually formed in the valve body,
the second recess that communicates with the third opening and the fourth opening in the first attitude; and the second recess that communicates with the second opening and the fourth opening in the second attitude. Two recesses are individually formed in the valve body.

According to the above configuration, the four openings can be switched and connected using the two first recesses and the two second recesses.

(8) In the flow path switching valve of (7), one of the first recesses communicates with the first opening and the second opening in the first attitude, and the third opening and the second opening communicate with each other. one of the second recesses communicating with the fourth opening is formed long in a direction parallel to each other;
The other first recess that communicates with the first opening and the third opening in the second attitude, and the other second recess that communicates with the second opening and the fourth opening. are parallel to each other and long in a direction perpendicular to one of the first recesses and one of the second recesses.

According to the above configuration, the two first recesses and the two second recesses can be formed in a small area of the surface area of the valve body, and the rotation angle of the valve body for switching the flow path can be made small. can.

(9) The flow path switching valve according to any one of (5) to (8) above has one end connected to the discharge pipe through which the refrigerant discharged from the compressor of the refrigerant circuit flows, and the other end connected to the a first piping section that communicates with the opening of the first pipe;
a second piping portion, one end of which is connected to a refrigerant piping that flows the refrigerant to the first heat exchanger of the refrigerant circuit, and the other end of which is connected to the second opening;
a third piping section having one end connected to a refrigerant piping that flows the refrigerant to the second heat exchanger of the refrigerant circuit, and the other end communicating with the third opening;
a fourth piping portion, one end of which is connected to a suction piping through which refrigerant sucked into the compressor flows, and the other end of which is connected to the fourth opening;
The first to fourth piping portions are integrally formed with the container.

According to the above configuration, by integrally forming the first to fourth piping parts in the housing of the flow path switching valve, the work of connecting the refrigerant piping to each piping part is facilitated, and the workability of assembling the refrigerant circuit is improved. can be improved.

(10) The flow path switching valve according to any one of (1) to (9) above preferably includes a drive unit that generates rotational power for rotating the valve body, and a drive unit that rotates the drive unit. The apparatus further includes a deceleration section that decelerates the power.

According to the above configuration, the output torque to the valve body can be increased by the speed reducer. Therefore, for example, even when the valve body is strongly pressed against the inner surface of the container in order to suppress leakage of high-pressure refrigerant, the valve body can be rotated. According to the above configuration, since the output torque to the valve body can be increased by the speed reduction section, the output of the drive section can be reduced accordingly, and the drive section can be made smaller.

(11) In the flow path switching valve according to any one of (1) to (10), preferably, the container includes an elastic member in which the opening is formed and contacts the outer surface of the valve body. are doing.

According to the above configuration, the elastic member can be elastically brought into close contact with the outer surface of the valve body, and leakage of the refrigerant can be suppressed.

(12) The refrigeration cycle device of the present disclosure includes the flow path switching valve according to any one of (1) to (11) above.

FIG. 1 is a schematic diagram showing a refrigerant circuit of a refrigeration cycle device including a flow path switching valve according to a first embodiment of the present disclosure. It is a perspective view of a flow path switching valve. FIG. 3 is a sectional view of a flow path switching valve. FIG. 3 is an exploded perspective view of the flow path switching valve. It is a perspective view of a valve body. It is a figure explaining switching of a refrigerant flow path. It is a figure explaining switching of a refrigerant flow path. It is a typical sectional view explaining the flow of a refrigerant in a flow path switching valve. FIG. 3 is a cross-sectional view of the first packing. FIG. 7 is a diagram illustrating switching of refrigerant flow paths in a second embodiment of the present disclosure. FIG. 7 is a diagram illustrating switching of refrigerant flow paths in a second embodiment of the present disclosure. FIG. 7 is a perspective view of a valve body of a flow path switching valve according to a third embodiment of the present disclosure. FIG. 3 is a schematic diagram showing a refrigerant circuit of a refrigeration cycle device including a flow path switching valve according to a fourth embodiment of the present disclosure. It is a perspective view of a flow path switching valve. FIG. 7 is a perspective view of a valve body of a flow path switching valve according to a fifth embodiment of the present disclosure.

Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.
[First embodiment]
FIG. 1 is a schematic diagram showing a refrigerant circuit of a refrigeration cycle device including a flow path switching valve according to a first embodiment of the present disclosure.
The refrigeration cycle device 10 includes a refrigerant circuit 30 that performs vapor compression type refrigeration cycle operation. The refrigeration cycle device 10 of this embodiment is an air conditioner. As shown in FIG. 1, this air conditioner 10 includes an outdoor unit (heat source unit) 11 and an indoor unit (utilization unit) 12. The outdoor unit 11 and the indoor unit 12 are connected by communication pipes 13 and 14, respectively. A refrigerant circuit 30 is formed by the outdoor unit 11, the indoor unit 12, and the communication pipes 13 and 14. Note that the refrigeration cycle device 10 is not limited to an air conditioner, and may be a refrigerator, a freezer, a water heater, or the like.

(Refrigerant circuit configuration)
As shown in FIG. 1, the outdoor unit 11 includes a compressor 15 that constitutes a refrigerant circuit 30, an outdoor heat exchanger (heat source heat exchanger; second heat exchanger) 16, an expansion valve 17, and a four-way switching valve. (Flow path switching valve) 18 is provided. The outdoor unit 11 is also provided with an outdoor fan 19. The indoor unit 12 is provided with an indoor heat exchanger (utilization heat exchanger; first heat exchanger) 21 that constitutes the refrigerant circuit 30 . The indoor unit 12 is also provided with an indoor fan 22.

The compressor 15 is, for example, a positive displacement compressor such as a scroll type or a rotary type, and includes a built-in compressor motor. The compressor 15 compresses the low-pressure refrigerant sucked in from the suction pipe 52 and then discharges it from the discharge pipe 51. In the outdoor unit 11, the discharge side of the compressor 15 is connected to a first port (first opening) P1 of a four-way switching valve 18 via a discharge pipe 51. The suction side of the compressor 15 is connected to the fourth port P4 of the four-way switching valve 18 via a suction pipe 52.

The outdoor heat exchanger 16 is configured by a cross-fin type fin-and-tube type heat exchanger, a microchannel type heat exchanger, or the like. The gas side end of the outdoor heat exchanger 16 is connected to the third port P3 of the four-way switching valve 18 via a refrigerant pipe 53. A liquid side end of the outdoor heat exchanger 16 is connected to one end of an expansion valve 17 via a refrigerant pipe 54.

The expansion valve 17 is, for example, an electrically operated valve whose opening degree can be adjusted. The other end of the expansion valve 17 is connected to the liquid side closing valve 23 via a refrigerant pipe 55.

The indoor heat exchanger 21 is configured by a cross-fin type fin-and-tube type heat exchanger, a microchannel type heat exchanger, or the like. A liquid side end of the indoor heat exchanger 21 is connected to a liquid side closing valve 23 via a liquid side communication pipe 14. A gas side end of the indoor heat exchanger 21 is connected to a gas side closing valve 24 via a gas side communication pipe 13. The gas side shutoff valve 24 is connected to the second port P2 of the four-way switching valve 18 via a refrigerant pipe 56.

The four-way switching valve 18 has a first mode (a mode shown by a solid line in FIG. 1) in which the first port P1 and the third port P3 communicate with each other, and the second port P2 and the fourth port P4 communicate with each other. , the flow path is switched to a second mode (a mode shown by dotted lines in FIG. 1) in which the first port P1 and the second port P2 communicate with each other, and the third port P3 and the fourth port P4 communicate with each other. In the first mode, the refrigerant discharged from the compressor 15 flows to the outdoor heat exchanger 16, and in the second mode, the refrigerant discharged from the compressor 15 flows to the indoor heat exchanger 21.

The outdoor fan 19 is arranged near the outdoor heat exchanger 16. The outdoor fan 19 is rotationally driven by a motor and blows air to the outdoor heat exchanger 16. The refrigerant flowing through the outdoor heat exchanger 16 exchanges heat with the outdoor air sent by the outdoor fan 19, and evaporates or condenses.

Indoor fan 22 is placed near indoor heat exchanger 21 . The indoor fan 22 is rotationally driven by a motor and blows air to the indoor heat exchanger 21 . The refrigerant flowing through the indoor heat exchanger 21 exchanges heat with the outdoor air sent by the indoor fan 22, and is condensed or evaporated.

The air conditioner 10 switches the four-way switching valve 18 to the first mode when performing cooling operation, and switches the four-way switching valve 18 to the second mode when performing heating operation. In the cooling operation, the gas refrigerant discharged from the compressor 15 flows through the four-way switching valve 18 to the outdoor heat exchanger 16 that functions as a condenser, and is condensed into liquid refrigerant. This liquid refrigerant is depressurized in the expansion valve 17 to become a gas-liquid two-phase refrigerant, and flows into the indoor heat exchanger 21 which functions as an evaporator. The gas-liquid two-phase refrigerant exchanges heat with the air sent by the indoor fan 22, evaporates, and becomes a gas refrigerant. Air cooled by heat exchange is supplied indoors. The gas refrigerant flowing out of the indoor heat exchanger 21 is sucked into the compressor 15 via the four-way switching valve 18.

In heating operation, the gas refrigerant discharged from the compressor 15 flows through the four-way switching valve 18 into the indoor heat exchanger 21 that functions as a condenser. The gas refrigerant exchanges heat with the air sent by the indoor fan 22, condenses, and becomes a liquid refrigerant. Air heated by heat exchange is supplied indoors. The liquid refrigerant flowing out from the indoor heat exchanger 21 is depressurized in the expansion valve 17 to become a gas-liquid two-phase refrigerant, and flows into the outdoor heat exchanger 16, which functions as an evaporator. The gas-liquid two-phase refrigerant evaporates in the outdoor heat exchanger 16 and becomes a gas refrigerant. The gas refrigerant is sucked into the compressor 15 via the four-way switching valve 18.

(Configuration of flow path switching valve)
FIG. 2 is a perspective view of the flow path switching valve. FIG. 3 is a sectional view of the flow path switching valve. FIG. 4 is an exploded perspective view of the flow path switching valve.
The four-way switching valve 18, which is a flow path switching valve, has a casing 31.
The casing 31 constitutes the outer shell of the four-way switching valve 18, and houses the packings 35, 36, the O-ring 34, and the valve body 60 therein.

The casing 31 is formed into a substantially cylindrical shape and has a hollow portion inside. The casing 31 is made of a material containing aluminum as a main component, such as an aluminum alloy or pure aluminum. The casing 31 is formed by casting. Specifically, the casing 31 is formed from aluminum die-casting. The material of the casing 31 is not limited to the above, and may be other materials such as stainless steel, iron, copper, etc.

The casing 31 has a casing body 32 and a lid 33. The casing body 32 has a cylindrical portion 32a and a disk portion 32b. The cylindrical portion 32a and the disc portion 32b are integrally formed. The cylindrical portion 32a is formed into a cylindrical shape. The disk portion 32b is formed in a disk shape and closes one end of the cylindrical portion 32a in the central axis C1 direction. Four through holes 31a to 31d are formed in the disc portion 32b. These four through holes 31a to 31d are respectively a first port (first opening) P1, a second port (second opening) P2, a third port (third opening) P3, and a fourth port (third opening) P1. 4) constitutes a part of P4. These four through holes 31a to 31d are arranged in a rectangular shape.

In the description of the four-way switching valve 18 in this embodiment, it is assumed that the central axis C1 of the casing 31 (casing main body 32) is oriented in the vertical direction. Further, in the casing 31, it is assumed that the disk portion 32b of the casing body 32 is located at the upper end.

As shown in FIGS. 3 and 4, the lid 33 of the casing 31 closes the opening at the other end (lower end) of the cylindrical portion 32a of the casing body 32. An annular protrusion 33a is formed at the center of the inner surface (upper surface) of the lid 33. A male thread groove 33b is formed on the outer peripheral surface of this protrusion 33a. On the other hand, a female thread groove 32c is formed on the inner peripheral surface of the lower end of the cylindrical portion 32a of the casing body 32. The male thread groove 33b of the lid body 33 is screwed into the female thread groove 32c of the casing body 32. Thereby, the casing body 32 and the lid body 33 are screwed together.

The four-way switching valve 18 has packings 35 and 36. The packing includes a first packing 35 and a second packing 36. The first packing 35 and the second packing 36 are arranged with the valve body 60 in between, and are in contact with the outer surface of the valve body 60, respectively.

The first packing 35 is arranged above the valve body 60, and the second packing 36 is arranged below the valve body 60. The first and second packings 35 and 36 are made of a material having a smaller elastic modulus than the casing 31. The first and second packings 36 are elastic members made of synthetic resin such as PEEK (polyetheretherketone) and PTFE (polytetrafluoroethylene). The first and second packings 35 and 36 have a function of supporting the valve body 60 within the casing 31.

As shown in FIG. 4, the first packing 35 has an outer peripheral frame 37 and a central frame 38. The outer peripheral frame 37 is formed in a cylindrical shape. The central frame 38 is formed in an X-shape, and each end is connected to the inner peripheral surface of the outer peripheral frame 37. The central frame 38 partitions the inside of the outer peripheral frame 37 into four spaces 35a to 35b. The four spaces 35a to 35d communicate with four through holes 31a to 31d formed in the disc portion 32b of the casing body 32, respectively. The four spaces 35a to 35d, together with the four through holes 31a to 31d, constitute a first port P1, a second port P2, a third port P3, and a fourth port P4, respectively. These first port P1, second port P2, third port P3, and fourth port P4 are arranged within the upward projected area of the valve body 60. The first packing 35 has a smaller elastic modulus than the casing 31, so that it comes into elastic contact with the valve body 60, and prevents the refrigerant passing through the spaces 35a to 35d from leaking from the gap between the valve body 60 and the first packing 35. It's suppressed.

One end surface (lower surface) of the first packing 35 has a contact surface that contacts the outer surface of the valve body 60. The contact surface is formed into a spherical shape. The radius of curvature of the contact surface of the first packing 35 is substantially the same as the outer diameter of the valve body 60. The other end surface (upper surface) of the first packing 35 is formed flat and in contact with the lower surface of the disc portion 32b of the casing body 32.

FIG. 9 is a sectional view of the first packing.
The central frame 38 of the first packing 35 has a width W1 on the lower side (valve body 60 side) smaller than a width W2 on the upper side (disk portion 32b side). Specifically, both side surfaces 38a in the width direction on the lower side of the central frame 38 are formed into inclined surfaces that taper downward, and thereby the width W1 on the lower side of the central frame 38 is formed small. ing. Therefore, the area of the contact surface (lower surface) 35e that contacts the outer surface of the valve body 60 can be reduced, and the load torque for rotating the valve body 60 can be reduced. Therefore, a drive unit 64 with a small output can be used as the drive unit 64, which will be described later.

As shown in FIGS. 3 and 4, the second packing 36 is formed in a substantially disk shape. One end surface (upper surface) of the second packing 36 has a contact surface that contacts the outer surface of the valve body 60. The contact surface is formed into a spherical shape. The radius of curvature of the contact surface of the second packing 36 is substantially the same as the outer diameter of the valve body 60. The other end surface (lower surface) of the second packing 36 is formed flat and placed above the lid 33. A through hole 36a is formed in the center of the second packing 36. A portion of the valve body 60 that contacts the second packing 36 protrudes from the through hole 36a.

FIG. 5 is a perspective view of the valve body.
The four-way switching valve 18 has a valve body 60. The valve body 60 is formed into a spherical shape. The valve body 60 rotates around a predetermined rotation axis C2. The rotation axis C2 passes through the center of the valve body 60 and is perpendicular to the central axis C1 of the casing 31.

A plurality of recesses 61 and 62 are formed on the outer surface of the valve body 60 for use in switching the refrigerant flow path. Each of the recesses 61 and 62 has a shape in which the outer surface of the valve body 60 is recessed, and also serves as a flow path for the refrigerant. The plurality of recesses 61 and 62 include a first recess 61 and a second recess 62. The first recess 61 connects the first port P1 shown in FIG. 1 to the second port P2 or the third port P3. The second recess 62 connects the fourth port P4 to the second port P2 or the third port P3.

In this embodiment, a total of four recesses, two first recesses 61A, 61B and two second recesses 62A, 62B, are formed in the valve body 60. The four recesses 61A, 61B, 62A, and 62B are all formed in a substantially elliptical shape. One first recess 61A and one second recess 62A are arranged substantially parallel to each other. One first recess 61A and one second recess 62A extend in a direction substantially parallel to the rotation axis C2.

The other first recess 61B and the other second recess 62B are arranged substantially parallel to each other. The other first recess 61B and the other second recess 62B extend in a direction substantially parallel to an axis perpendicular to the rotation axis C2. Therefore, one of the first recesses 61A and one of the second recesses 62A, and the other first recess 61B and the other second recess 62B are arranged at positions shifted in phase by 90 degrees around the rotation axis C2. There is. The details of switching the refrigerant flow paths by the first and second recesses 61 and 62 will be described later.

As shown in FIG. 2, the four-way switching valve 18 includes a drive section 64, a deceleration section 65, and an output shaft 66. The drive unit 64 generates rotational power for rotating the valve body 60. The drive unit 64 of this embodiment is composed of an electric motor. The drive section 64 outputs to the deceleration section 65 .

The deceleration section 65 decelerates the output of the drive section 64. The reduction unit 65 includes a gear that reduces the rotational power generated by the drive unit 64.
The output shaft 66 outputs the rotational power generated by the drive unit 64 and decelerated by the deceleration unit 65, and transmits it to the valve body 60. The output shaft 66 is arranged on the rotation axis C2 of the valve body 60. An end of the output shaft 66 is connected to the valve body 60.

The drive section 64, the speed reduction section 65, and the output shaft 66 constitute a drive device that drives the valve body 60. The deceleration unit 65 increases the output torque to the valve body 60 by decelerating the output of the drive unit 64 and transmitting the decelerated output to the valve body 60. Therefore, the output of the drive section 64 can be reduced, and the drive section 64 can be made smaller.

As shown in FIGS. 3 and 4, a fitting hole 60a is formed on the outer surface of the valve body 60. One end of the output shaft 66 is fitted into this fitting hole. The output shaft 66 is integrally rotatably connected to the valve body 60 by key coupling or the like.

The four-way switching valve 18 has an O-ring 34. The O-ring 34 is placed and positioned on the inner periphery of a protrusion 33a formed on the top surface of the lid 33. The O-ring 34 is arranged between the lid 33 of the casing 31 and the second packing 36. The O-ring 34 is sandwiched between the lid body 33 and the second packing 36 and is compressed. The O-ring 34 functions as a biasing member that applies biasing force to the second packing 36 by being compressed. Therefore, for example, even if the first and second packings 36 are worn out due to contact with the valve body 60, a decrease in contact pressure can be suppressed. As the biasing member, a spring such as a plate spring or a coil spring may be used instead of the O-ring 34.

When the male thread groove 33b of the lid 33 of the casing 31 is screwed into the female thread groove 32c of the casing body 32, the first packing 35, the second packing 36, and the valve body 60 are pressed against each other and come into close contact. By adjusting the tightening torque of the lid 33 with respect to the casing body 32, the pressing force of the valve body 60 against the first packing 35 can be adjusted. In this embodiment, the casing main body 32 and the first and second packings 35 and 36 constitute a housing body 25 that houses the valve body 60, and the lid body 33 directs the valve body 60 toward the first packing 35. It constitutes a pressing body for pressing. The pressing body (lid 33) constitutes an adjustment section that adjusts the pressing force of the outer surface of the valve body 60 against the inner surface of the container 25 (the contact surface of the first packing 35).

The tightening torque (tightening amount) of the lid 33 with respect to the casing body 32 is determined by the amount of refrigerant leakage between the first packing 35 and the valve body 60, the contact area between the first packing 35 and the valve body 60, and the first packing 35. It is appropriately set in consideration of at least one of the surface roughness of the first packing 35 and the elastic modulus of the first packing 35 . The allowable amount of refrigerant leaking between the first packing 35 and the valve body 60 is determined according to specifications such as the capacity of the air conditioner. Therefore, the tightening torque of the lid 33 with respect to the casing body 32 is set so that the amount of leakage is appropriate. The contact area between the first packing 35 and the valve body 60, the surface roughness and the elastic modulus of the first packing 35 affect the load torque required to rotate the valve body 60. Therefore, in this embodiment, at least one of the contact area, the surface roughness, and the elastic modulus is taken into consideration depending on the performance of the drive device (output of the drive unit 64, reduction ratio of the reduction unit 65, etc.). The tightening torque is set.

(Regarding flow path switching by valve body 60)
FIGS. 6 and 7 are diagrams illustrating switching of refrigerant flow paths. FIG. 8 is a schematic cross-sectional view illustrating the flow of refrigerant within the flow path switching valve.
6 and 7 show the first packing 35 viewed from line AA in FIG. 3. FIG. 8 illustrates a state in which the refrigerant flowing in from the first port P1 flows out from the second port P2.

The valve body 60 is switched between a first posture (see FIG. 6) and a second posture (see FIG. 7) by rotating 90 degrees around the rotation axis C2.
In the first posture shown in FIG. 6, the first recess 61A of the valve body 60 connects the first port (first opening) P1 and the second port P2, and the second recess 62A connects the fourth port (fourth (opening) P4 and the third port P3 are connected. Therefore, as shown in FIG. 1, the refrigerant discharged from the compressor 15 flows into the four-way switching valve 18 from the first port P1 and flows out of the four-way switching valve 18 from the second port P2. It will be sent to the indoor heat exchanger 21. Furthermore, the refrigerant flowing out of the outdoor heat exchanger 16 flows into the four-way switching valve 18 from the third port P3, flows out from the fourth port P4 to the outside of the four-way switching valve 18, and is sucked into the compressor 15. That will happen. This allows the air conditioner 10 to perform heating operation.

In the second attitude shown in FIG. 7, the first recess 61B of the valve body 60 connects the first port (first opening) P1 and the third port P3, and the second recess 62B connects the fourth port (fourth (opening) P4 and the second port P2 are connected. Therefore, as shown in FIG. 1, the refrigerant discharged from the compressor 15 flows into the four-way switching valve 18 from the first port P1 and flows out of the four-way switching valve 18 from the third port P3. It will be sent to the outdoor heat exchanger 16. Further, the refrigerant flowing out from the indoor heat exchanger 21 flows into the four-way switching valve 18 from the second port P2, flows out from the fourth port P4 to the outside of the four-way switching valve 18, and is sucked into the compressor 15. That will happen. This allows the air conditioner 10 to perform cooling operation.

As shown in FIG. 8, when the refrigerant discharged from the compressor 15 flows into the four-way switching valve 18 from the first port P1, high pressure of the refrigerant is applied to one location of the first recess 61 of the valve body 60. This may make it difficult to rotate the valve body 60. Therefore, in the present embodiment, by causing the refrigerant flowing in from the first port P1 to leak between the outer surface of the valve body 60 and the inner surface of the casing 31, the pressure of the refrigerant is reduced to the valve body as shown by arrow a in FIG. 60, the load torque for rotating the valve body 60 can be reduced. Specifically, in the first packing 35, a groove 35e is formed in the contact surface with the valve body 60 around the first port P1 (space 35a), and this groove 35e communicates the inside and outside of the first port P1. The groove 35e allows the refrigerant that has flowed into the first port P1 to leak between the valve body 60 and the casing 31. Therefore, this groove 35e constitutes a leakage portion that leaks the refrigerant between the valve body 60 and the casing 31 (container 25).

(Assembling method of four-way switching valve)
The four-way switching valve 18 of this embodiment is assembled as follows.
First, as shown in FIG. 4, the first packing 35, the valve body 60, and the second packing 36 are inserted into the inside of the casing main body 32 from the lower end opening. Next, the lid body 33 with the O-ring 34 attached is screwed to the casing body 32. Next, the output shaft 66 is inserted through the insertion hole 32d formed in the cylindrical portion 32a of the casing body 32, and is fitted into the fitting hole 60a of the valve body 60. Thereafter, as shown in FIG. 2, the output shaft 66 is connected to the deceleration section 65 and the drive section 64. By assembling the four-way switching valve 18 as described above, the packings 35 and 36 in the casing 31 and the valve body 60 can be easily assembled from one opening of the casing body 32.

[Second embodiment]
10 and 11 are diagrams illustrating switching of refrigerant flow paths in the second embodiment of the present disclosure.
In this embodiment, the configuration of the leakage portion formed in the first packing 35 is different from that in the first embodiment. In the first packing 35 of this embodiment, four through-hole-shaped spaces 35a to 35d are formed that are substantially similar to the four through holes 31a to 31d formed in the casing body 32, and these through holes 31a 31d and spaces 35a to 35d constitute first to fourth ports P1 to P4. Among these, the first port P1 (through hole 31a, space 35a) is formed at a position shifted radially outward of the first packing 35. Therefore, the first port P1 has a smaller range of overlap with the first recesses 61A and 61B formed in the valve body 60, and conversely a range R of overlap with the outer surface of the valve body 60 (hatched in FIGS. 10 and 11). ) has become larger. With such a configuration, the refrigerant flowing from the first port P1 easily leaks from the overlapping range R between the first port P1 and the outer surface of the valve body 60, and the pressure of the refrigerant is distributed and applied to the valve body 60. be able to. Therefore, the overlapping range R constitutes a leakage portion that leaks refrigerant between the casing 31 and the valve body 60.

[Third embodiment]
FIG. 12 is a perspective view of a valve body of a flow path switching valve according to a third embodiment of the present disclosure.
The valve body 60 of this embodiment is different from the first embodiment in the direction of the rotation axis C2. In the first embodiment, the rotation axis C2 of the valve body 60 was oriented in a direction perpendicular to the central axis C1 of the casing 31, but in this embodiment, it is arranged concentrically with the central axis C1 of the casing 31. has been done. An output shaft 66 is connected to the lower end of the valve body 60.

One first recess 61 and one second recess 62 are formed in the valve body 60 . The first recess 61 and the second recess 62 are formed into a substantially oval shape. The first recess 61 and the second recess 62 are elongated in a direction perpendicular to the rotation axis C2 and are arranged parallel to each other.

In this embodiment, the valve body 60 is switched between the first attitude and the second attitude by rotating 90 degrees around the rotation axis C2. In the first attitude, the first and second recesses 61 and 62 of the valve body 60 are in the state shown in FIG. 6, and in the second attitude, the first and second recesses 61 and 62 are in the state shown in FIG. . Therefore, the refrigerant flow path can be switched by one first recess 61 and one second recess 62. Therefore, processing of the valve body 60 can be reduced, and the four-way switching valve 18 can be manufactured more easily.

[Fourth embodiment]
FIG. 13 is a schematic diagram showing a refrigerant circuit of a refrigeration cycle device including a flow path switching valve according to a fourth embodiment of the present disclosure. FIG. 14 is a perspective view of the flow path switching valve.
In this embodiment, the four-way switching valve 18 integrally includes a part of the refrigerant pipe. Here, "integrated" means that a plurality of elements are made of the same material and connected in a continuous form without dividing surfaces. Therefore, forms in which a plurality of elements are mechanically connected with screws or the like, or in which they are connected without melting the base material, such as by brazing, are excluded.

As shown in FIG. 14, a first piping part 41, a second piping part 42, a third piping part 43, and a fourth piping part 44 are each integrally formed in the disc part 32b of the casing body 32. .
The first piping section 41 has a linear tube axis C11. The tube axis C11 of the first piping section 41 is arranged parallel to the center axis C1 of the casing 31. One end of the first piping section 41 is connected to the first port P1 of the four-way switching valve 18. The other end of the first piping section 41 is connected to a discharge piping 71 through which refrigerant discharged from the compressor 15 flows. The first piping section 41 has a muffler 47 midway in the direction of the tube axis C11. The muffler 47 suppresses noise caused by pressure pulsations of the refrigerant discharged from the compressor 15.

The second piping section 42 has a tube axis C12 bent at about 90 degrees. One end of the second piping section 42 is connected to the second port P2 of the four-way switching valve 18. The other end of the second piping section 42 is connected to a refrigerant piping 76 that connects to the gas side shutoff valve 24 . In the second piping section 42, a portion connected to the second port P2 is arranged along the vertical direction, and a portion connected to the refrigerant pipe 76 is arranged along the horizontal direction.

The third piping section 43 has a linear tube axis C13. The tube axis C13 of the third piping section 43 and the tube axes C11 and C12 of the first and second piping sections 41 and 42 are arranged parallel to each other. One end of the third piping section 43 is connected to the third port P3 of the four-way switching valve 18. The other end of the third piping section 43 is connected to a refrigerant piping 73 that connects to the gas side end of the outdoor heat exchanger 16 . In this embodiment, the length of the third piping section 43 in the tube axis direction is shorter than the length of the first piping section 41 in the tube axis direction.

The fourth piping section 44 has a linear tube axis C14. The tube axis C14 of the fourth piping section 44 and the tube axes C11 and C13 of the first piping section 41 and the third piping section 43 are arranged parallel to each other. One end of the fourth piping section 44 is connected to the fourth port P4 of the four-way switching valve 18. The other end of the fourth piping section 44 is connected to a suction piping 72 through which refrigerant to be sucked into the compressor 15 flows. The length of the fourth piping section 44 in the tube axis direction is approximately the same as the length of the third piping section 43 in the tube axis direction.

The fourth piping section 44 has a branch section 44a that branches in an orthogonal direction midway along the tube axis direction. This branch portion 44a is used to merge refrigerant sucked into the compressor 15 from ports other than the fourth port P4 of the four-way switching valve 18. This branch portion 44a is closed with a lid or the like when not in use.

The first piping part 41 and the fourth piping part 44 are connected by a connecting part 48. The connecting portion 48 is formed into a plate shape. The connecting portion 48 is provided over the entire length of the fourth piping portion 44 in the tube axis direction. Although not shown, the first piping part 41 and at least one of the second piping part 42 and the third piping part 43 may be connected by a plate-shaped connecting part, and the fourth piping part 44 and the second piping part 44 may be connected to each other by a plate-shaped connecting part. At least one of the piping part 42 and the third piping part 43 may be connected by a plate-shaped connecting part.

The fifth piping section 45 has a linear tube axis C15. The tube axis C15 of the fifth piping section 45 and the tube axes C11, C13, and C14 of the first, third, and fourth piping sections 41, 43, and 44 are arranged parallel to each other. The fifth piping portion 45 is connected to the casing 31 of the four-way switching valve 18 at an end portion or a middle portion in the tube axis direction. One end of the expansion valve 17 is directly connected to one end of the fifth piping section 45 . The other end of the expansion valve 17 is connected to a refrigerant pipe 74 connected to the liquid side end of the outdoor heat exchanger 16. The other end of the fifth piping section 45 is connected to a refrigerant piping 75 connected to the liquid side closing valve 23 . Therefore, the fifth piping section 45 is not connected to the port of the four-way switching valve 18.

The four-way switching valve 18 of this embodiment employs the valve body 60 illustrated in FIG. 12 . An output shaft 66 connected to the lower part of the valve body 60 projects downward from the lid 33 of the casing 31 . A deceleration section 65 is connected to the output shaft 66, and a drive section 64 is connected to the deceleration section 65.

In this embodiment, since the casing body 32 of the four-way switching valve 18 and the plurality of piping sections 41 to 45 are integrally formed, the bending rigidity of the whole is increased, and Deformation is suppressed.

In this embodiment, a plurality of piping sections 41 to 45 are integrally formed and arranged in one place. Therefore, the refrigerant pipes 71 to 76 connected to the four-way switching valve 18, the valve 17, etc. can be arranged compactly, and the pipes can be efficiently installed in a limited space within the outdoor unit 11.

Furthermore, in the four-way switching valve 18 of this embodiment, the first to fourth piping sections 41 to 44 extend from the casing 31 in the same direction, specifically upward. Therefore, the refrigerant pipes 71 to 73, 76 can be easily connected to the first to fourth pipe parts 41 to 44 from the same side (upper side). Further, since the first to fourth piping sections 41 to 44 are provided concentratedly on the upper surface of the casing 31, there is no need to connect the refrigerant piping 71 to 73, 76 to the lower surface of the casing 31. Therefore, it is possible to arrange the four-way switching valve 18 at a position as low as possible, and the degree of freedom in installing the four-way switching valve 18 within the outdoor unit 11 can be increased.

In the present embodiment, a drive unit 64 that rotationally drives the valve body 60 is arranged on the lower side of the casing 31, which is on the opposite side from the first to fourth piping parts 41 to 44. Therefore, it is possible to prevent the drive unit 64 from getting in the way when the refrigerant pipes 71 to 73, 76 are connected to the first to fourth pipe parts 41 to 44. Furthermore, the first to fourth piping sections 41 to 44 are arranged on one side (upper side) of the casing 31 in the vertical direction, and the drive section 64 is arranged on the other side (lower side) of the casing 31 in the vertical direction. , the horizontal installation space for the four-way switching valve 18 can be reduced.

In the four-way switching valve 18 of this embodiment, the first piping part 41 and the fourth piping part 44 are integrally formed via a connecting part 48. Therefore, the cross-sectional area and moment of inertia of the first piping section 41 and the fourth piping section 44 in the cross section perpendicular to the tube axes C11 and C14 are increased compared to when they are separated from each other. As a result, the first and fourth piping sections 41 and 44 have a structure that has high bending rigidity and is difficult to deform.

In the outdoor unit 11 having the compressor 15, the form of vibration (vibration mode), such as how much vibration is transmitted from the compressor 15 and how, is analyzed, and the transmission of the vibration is suppressed. The length and route of the piping connected to the compressor 15 are designed so that the In this embodiment, the bending rigidity is increased by integrally forming the first piping section 41, the fourth piping section 44, and the connecting section 48, so deformation due to vibration of the compressor 15 is suppressed. . Therefore, changes in the relative positions of the refrigerant pipes 71 and 72 from the compressor 15 connected to the four-way switching valve 18 are also suppressed. This facilitates vibration analysis and design for vibration suppression.

[Fifth embodiment]
FIG. 15 is a perspective view of a valve body of a flow path switching valve according to a fifth embodiment of the present disclosure.
The valve body 60 of this embodiment is formed not in a spherical shape but in a cylindrical shape. The valve body 60 rotates about the center of the cylindrical shape as a rotation axis C2. An output shaft 66 is connected to one end of the valve body 60 in the direction of the rotation axis C2. Similar to the first embodiment, two first recesses 61A, 61B and two second recesses 62A, 62B are formed on the outer peripheral surface of the valve body 60. The valve body 60 of this embodiment switches the flow path by rotating 90 degrees around the rotation axis C2.

[Other embodiments]
In the valve body 60 shown in FIGS. 5 and 15, a first recess 61A and a second recess 62A, and a first recess 61B and a second recess 62B are arranged with a phase shift of 90 degrees around the rotation axis C2. However, they may be arranged with a phase shift within a range of, for example, 90° or more and 180° or less.

In the above embodiment, the casing body 32 and the packings 35 and 36 of the casing 31 constituted the housing body 25, and the lid body 33 of the casing 31 constituted the pressing body (adjustment part 26), but the casing body 32, The packings 35, 36 and the lid 33 constitute the container 25, and a pressing body such as a bolt screwed to the lid 33 may be separately provided.

In the above embodiment, the central axis C1 of the casing 31 is arranged to face in the vertical direction, but it can also be arranged in a direction other than the vertical direction, such as a horizontal direction or a direction inclined with respect to the vertical direction and the horizontal direction. The center axis C1 may be arranged so as to face the center axis C1. Furthermore, when the central axis C1 is arranged so as to face in the vertical direction, the first to fourth ports P1 to P4 may face downward. In this case, in the four-way switching valve 18 described in the fourth embodiment (see FIG. 14), the first to fourth piping sections 41 to 44 extend downward from the casing 31.

In the embodiment described above, the casing 31 of the flow path switching valve 18 is formed in a cylindrical shape, but it may be formed in a cubic or rectangular parallelepiped shape. In this case, the internal space of the casing 31 may be formed in a cylindrical shape as in the above embodiment, or may be formed in a rectangular tube shape.

Although the flow path switching valve of the above embodiment is a four-way switching valve, the flow path switching valve of the present disclosure may be a three-way switching valve. In this case, for example, the fourth port and second recess of the above embodiment can be omitted. Further, the flow path switching valve can also close the refrigerant flow path by blocking the first to fourth ports P1 to P4 with a portion of the outer surface of the valve body in which the recess is not formed.

[Operations and effects of embodiment]
(1) The flow path switching valve 18 of the present disclosure includes an accommodating body 25 having a hollow portion inside, and is rotatably accommodated in the hollow portion, and is rotated to change between a first posture and a second posture. A first opening P1, a second opening P2, and a third opening P3, which communicate the hollow part with the outside of the housing body 25, The first opening P1 and the second opening P2 are connected in the first attitude, and the first opening P1 and the third opening P3 are connected in the second attitude. First recesses 61, 61A, and 61B are formed on the outer surface of the valve body 60.

According to the above configuration, the valve body 60 of the flow path switching valve 18 is formed with only concave portions 61, 61A, and 61B having concave outer surfaces as a flow path, instead of a penetrating hole. The flow path can be simplified and the valve body 60 can be easily processed.

(2) In the flow path switching valve of (1), the first opening P1 allows the refrigerant discharged from the compressor 15 of the refrigerant circuit 30 to flow into the container 25, and the first Leakage portions 35e and 35R are formed in the container 25 to allow the refrigerant flowing from the opening P1 to leak between the inner surface of the container 25 and the outer surface of the valve body 60.

According to the above configuration, the pressure of the refrigerant leaked from the leakage portion can be applied to the entire valve body 60 in a distributed manner. Therefore, the load torque for rotating the valve body can be reduced compared to the case where the pressure of the refrigerant is applied concentratedly to a specific location of the valve body 60.

(3) In the flow path switching valve of (1) or (2), the pressing force of the outer surface of the valve body 60 against the inner surface of the container 25 around the first to third openings P3 is adjusted. It further includes an adjustment section 26.

According to the above configuration, the load torque for rotating the valve body 60 can be appropriately adjusted.

(4) In the flow path switching valve of (3), the adjustment portion 26 is a pressing body that is screwed to the housing body 25 to press the valve body 60 toward the inner surface of the housing body 25. It has 33.

According to the above configuration, by screwing the pressing body 33 into the housing body 25, the pressing force of the valve body 60 against the inner surface of the housing body 25 can be easily adjusted.

(5) In the flow path switching valve according to any one of (1) to (4), a fourth opening P4 communicating between the hollow part and the outside of the container 25 is provided in the container 25. is formed, connects the third opening P3 and the fourth opening P4 in the first attitude, and connects the second opening P2 and the fourth opening P4 in the second attitude. Second recesses 62, 62A, and 62B are formed on the outer surface of the valve body 60.

According to the above configuration, even in the flow path switching valve 18 in which the first to fourth openings P1 to P4 are formed, the refrigerant flow path can be simplified and the valve body 60 can be easily processed.

(6) In the flow path switching valve of (5), the first to fourth openings P1, P2, P3, and P4 are arranged within a projected area of the valve body 60 in one direction.

According to the above configuration, since the first to fourth openings P1 to P4 are arranged in a concentrated manner within a small area, the first and second recesses 61 and 62 that connect them can be made small, and the valve The body 60 can be processed more easily.

(7) In the flow path switching valve of (5) or (6), the first recess 61A communicates the first opening P1 and the second opening P2 in the first posture; The first recess 61B, which communicates the first opening P1 and the third opening P3 in the second attitude, is individually formed in the valve body 60, and the first recess 61B communicates with the third opening P3 in the first attitude. and the second recess 62A that communicates with the fourth opening P4 and the second recess 62B that communicates the second opening P2 and the fourth opening P4 in the second posture. It is formed in the valve body 60.

According to this configuration, the four openings P1 to P4 can be switched and connected using the two first recesses 61A, 61B and the two second recesses 62A, 62B.

(8) In the flow path switching valve of (7), one of the first recesses 61A that communicates the first opening P1 and the second opening P2 in the first attitude, and the third recess 61A communicate with each other. One of the second recesses 62A that communicates the opening P3 and the fourth opening P4 is formed long in a direction parallel to each other, and the first opening P1 and the third opening are connected in the second attitude. The other first recess 61B that communicates with P3 and the other second recess 62B that communicates with the second opening P2 and the fourth opening P4 are parallel to each other and It is formed to be long in the direction perpendicular to the recess 61A and the second recess 62A.

According to this configuration, the two first recesses 61A, 61B and the two second recesses 62A, 62B can be formed in a small area of the surface area of the valve body 60, and the valve body for switching the flow path can be formed in a small area. The rotation angle can be made smaller.

(9) The flow path switching valve according to any one of (5) to (8) above has one end connected to the discharge pipe 71 through which the refrigerant discharged from the compressor 15 of the refrigerant circuit 30 flows, and the other end is connected at one end to a first piping section 41 that communicates with the first opening P1 and to a refrigerant piping 76 that flows refrigerant to the first heat exchanger (indoor heat exchanger) 21 of the refrigerant circuit 30, and at the other end. One end is connected to a second piping section 42 that communicates with the second opening P2 and a refrigerant piping 73 that flows the refrigerant to the second heat exchanger (outdoor heat exchanger) 16 of the refrigerant circuit 30, and the other end is connected to the second piping section 42 that communicates with the second opening P2. a third piping section 43 communicating with the third opening P3;
a fourth piping section 44 having one end connected to a suction piping 72 through which the refrigerant sucked into the compressor 15 flows and the other end communicating with the fourth opening P4; 41, 42, 43, and 44 are formed integrally with the container 25.

According to the above configuration, by integrally forming the first to fourth piping parts 41 to 44 in the container 25 of the flow path switching valve 18, the refrigerant piping 71 to 73, 76 can be connected to the piping parts 41 to 44. This makes the work easier and improves the workability of assembling the refrigerant circuit 30.

(10) The flow path switching valve according to any one of (1) to (9) preferably includes a drive section 64 that generates rotational power for rotating the valve body 60, and a drive section It further includes a deceleration section 65 that decelerates the rotational power of 64.

According to the above configuration, the output torque to the valve body 60 can be increased by the speed reducer 65. Therefore, for example, even when the valve body 60 is strongly pressed against the inner surface of the container 25 in order to suppress leakage of high-pressure refrigerant, the valve body 60 can be rotated. Since the output torque to the valve body 60 can be increased by the speed reduction section 65, the output of the drive section 64 can be reduced accordingly, and the drive section 64 can be made smaller.

(11) In the flow path switching valve 18 according to any one of (1) to (10), preferably, the container 25 has the openings P1, P2, P3, and P4 formed therein, and the valve It has an elastic member (first packing) 35 that contacts the outer surface of the body 60.

According to the above configuration, the elastic member 35 can be elastically brought into close contact with the outer surface of the valve body 60, and leakage of refrigerant can be suppressed.

Although the embodiments have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the claims.

15: Compressor 16: Outdoor heat exchanger (second heat exchanger)
18: Four-way switching valve (flow path switching valve)
21: Indoor heat exchanger (first heat exchanger)
25 : Container 26 : Adjustment part 30 : Refrigerant circuit 33 : Lid body (pressing body)
35: First packing (elastic member)
35e: Groove (leakage part)
41: First piping section 42: Second piping section 43: Third piping section 44: Fourth piping section P1: First port (first opening)
P2: Second port (second opening)
P3: Third port (third opening)
P4: 4th port (4th opening)

Claims (12)

a container (25) having a hollow part inside;
a valve body (60) rotatably housed in the hollow portion and switched between a first attitude and a second attitude by being rotated;
A first opening (P1), a second opening (P2), and a third opening (P3) are formed in the housing (25), communicating the hollow part with the outside of the housing (25). ,
The first opening (P1) and the second opening (P2) are connected in the first attitude, and the first opening (P1) and the third opening (P3) are connected in the second attitude. ) is formed on the outer surface of the valve body (60). The first opening (P1) allows refrigerant discharged from the compressor (15) of the refrigerant circuit (30) to flow into the container (25),
The housing (25) has a leakage portion (35e, R) that allows the refrigerant flowing in from the first opening (P1) to leak between the inner surface of the housing (25) and the outer surface of the valve body (60). The flow path switching valve according to claim 1, wherein the flow path switching valve is formed in a. The present invention further comprises an adjusting section (26) that adjusts the pressing force of the outer surface of the valve body (60) against the inner surface of the container (25) around the first to third openings (P3). Item 2. The flow path switching valve according to item 2. The adjustment part (26) includes a pressing body (33) that is screwed to the housing body (25) to press the valve body (60) toward the inner surface of the housing body (25). The flow path switching valve according to claim 3. A fourth opening (P4) communicating between the hollow part and the outside of the container (25) is formed in the container (25),
The third opening (P3) and the fourth opening (P4) are connected in the first attitude, and the second opening (P2) and the fourth opening (P4) are connected in the second attitude. ) A flow path switching valve according to any one of claims 1 to 4, wherein a second recess (62, 62A, 62B) connecting the valve body (60) with the valve body (60) is formed on the outer surface of the valve body (60). The flow path switching valve according to claim 5, wherein the first to fourth openings (P1, P2, P3, P4) are arranged within a projected area of the valve body (60) in one direction. the first recess (61A) communicating the first opening (P1) and the second opening (P2) in the first attitude; and the first opening (P1) in the second attitude. and the first recess (61B) communicating with the third opening (P3) are individually formed in the valve body (60),
the second recess (62A) communicating the third opening (P3) and the fourth opening (P4) in the first attitude; and the second opening (P2) in the second attitude. The flow path switching valve according to claim 5, wherein the second recess (62B) that communicates with the fourth opening (P4) is separately formed in the valve body (60). One of the first recesses (61A) communicates with the first opening (P1) and the second opening (P2) in the first attitude, and the third opening (P3) and the fourth one of the second recesses (62A) communicating with the opening (P4) is formed long and parallel to each other;
The other first recess (61B) communicates with the first opening (P1) and the third opening (P3) in the second attitude, and the second opening (P2) and the fourth opening (P2) communicate with each other. The other second recess (62B) communicating with the opening (P4) is parallel to each other and long in a direction orthogonal to one of the first recess (61A) and one of the second recess (62A). The flow path switching valve according to claim 7, wherein the flow path switching valve is formed. a first piping section (41) having one end connected to a discharge piping (71) through which refrigerant discharged from the compressor (16) of the refrigerant circuit (30) flows, and the other end communicating with the first opening (P1); and,
a second piping section (42), one end of which is connected to a refrigerant piping (76) through which refrigerant flows to the first heat exchanger (21) of the refrigerant circuit (30), and the other end of which communicates with the second opening (P2); )and,
A third piping section (43) whose one end is connected to a refrigerant piping (73) through which refrigerant flows to the second heat exchanger (16) of the refrigerant circuit (30) and whose other end communicates with the third opening (P3). )and,
a fourth piping part (44) connected at one end to a suction piping (72) through which refrigerant sucked into the compressor (15) flows, and whose other end communicates with the fourth opening (P4);
The flow path switching valve according to claim 5, wherein the first to fourth piping portions (41, 42, 43, 44) are integrally formed with the housing (25). The valve according to any one of claims 1 to 4, further comprising: a drive unit (64) that generates rotational power to rotate the valve body (60); and a deceleration unit (65) that reduces the rotational power of the drive unit (64). The flow path switching valve according to any one of the items. Claims 1 to 4, wherein the housing body (25) includes an elastic member (35) in which the openings (P1, P2, P3, P4) are formed and that contacts the outer surface of the valve body (60). The flow path switching valve according to any one of the above. A refrigeration cycle device comprising the flow path switching valve according to any one of claims 1 to 4.

Images