JP2002048434A - Refrigerant control valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerant control valve reasonably capable of achieving the interception and communication of a high-pressure refrigerant flow passage and a low-pressure refrigerant flow passage upon cooling or heating operation, the regulation of the flow rate of the high-pressure refrigerant flow passage or the low-pressure refrigerant flow passage upon interception and communication as well as the function of a bypass flow passage of the high-pressure refrigerant flow passage or the low- pressure refrigerant flow passage upon the interception by a single control valve. SOLUTION: The refrigerant control valve is so constituted that a first inner cylindrical body 2A and a second inner cylindrical body 2B are mounted in an outer cylindrical body 1 so as to support them pivotally in the outer cylindrical body 1, first and third refrigerant flow ports 3, 5 as well as fifth and seventh refrigerant flow ports 7, 9, which are provided on the tubular wall of the outer cylindrical body 1 as well as the same of the first and second inner cylindrical bodies 2A, 2B, are communicated upon the pivoting of the first inner cylindrical body 2A to introduce refrigerant into the first and second cylindrical chambers 11A, 11b of the first and second inner cylindrical bodies 2A, 2B while second and fourth refrigerant flow ports 4, 6 are communicated with sixth and eighth refrigerant flow ports 8, 10 to guide the refrigerant out of the first and second cylindrical chambers 11A, 11B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the shut-off and communication of a high-pressure refrigerant flow path and a low-pressure refrigerant flow path in cooling and heating, or the adjustment of the flow rate of a high-pressure refrigerant flow path or a low-pressure refrigerant flow path in the shut-off and communication. The present invention relates to a refrigerant control valve in a cooling and heating device suitable for forming a high-pressure refrigerant flow path or a low-pressure refrigerant flow path bypass flow path.

[0002]

2. Description of the Related Art Conventionally, various control valves for shutting off and communicating a high pressure refrigerant flow path and a low pressure refrigerant flow path between an indoor heat exchanger and an outdoor heat exchanger include a high pressure refrigerant flow path and a low pressure flow path. Are provided with control valves. In particular, the control valve with the throttle function and the control valve with the expansion function are individually manufactured and installed as having individual functions.

Further, in the case of a refrigerant leak inspection, a dedicated control valve (a check valve, a check valve, or the like) is provided to allow the refrigerant to flow in the indoor refrigerant circuit or the outdoor refrigerant circuit, thereby performing the above-mentioned leakage inspection. .

[0004] The second invention in the present application is to shut off and communicate the high-pressure refrigerant flow path and the low-pressure refrigerant flow path in the cooling and heating, adjust the flow rate of the high-pressure refrigerant flow path or the low-pressure refrigerant flow path in the shut-off and communication, An object of the present invention is to provide a refrigerant control valve in which the function of a refrigerant flow path or a bypass flow path of a low-pressure refrigerant flow path can be rationally achieved by a single control valve.

The first invention in the present application is the above-mentioned [000]
2] and [0003] are to provide a refrigerant control valve suitable for performing each control function of the high-pressure refrigerant and the low-pressure refrigerant by an individual control valve.

According to a first aspect of the invention, a rotor that rotates on the same axis in the outer cylinder is formed of a single inner cylinder that can be molded with a synthetic resin, and a second invention is that the rotor can be molded with a synthetic resin. The present invention provides a refrigerant control valve formed of two inner cylinders, and introducing and discharging a high-pressure refrigerant or a low-pressure refrigerant into a cylinder chamber of each inner cylinder.

[0007]

<First Invention> A refrigerant control valve according to the present invention has an inner cylinder inside an outer cylinder, and the inner cylinder is rotatable about the same axis as the outer cylinder. Make the structure supported by

A first refrigerant flow port and a second refrigerant flow port are provided on the cylindrical wall of the outer cylindrical body, and a third refrigerant flow port and a fourth refrigerant flow port are provided on the cylindrical wall of the inner cylindrical body. The first and third refrigerant communication ports are communicated with each other when the inner cylinder is rotated to introduce the refrigerant into the cylinder chamber of the inner cylinder, and the second and fourth refrigerant communication ports are communicated with each other. Then, the refrigerant in the cylinder chamber is led out.

Preferably, the inner cylinder is formed of a synthetic resin molded product.

<Second Invention> A refrigerant control valve according to the present invention comprises a first inner cylinder and a second inner cylinder inside an outer cylinder, and
The second inner cylinder is supported rotatably about the same axis as the outer cylinder.

A first refrigerant passage and a second refrigerant passage are provided on the cylinder wall of the outer cylinder, and a third refrigerant passage and a fourth refrigerant passage are provided on the cylinder wall of the first inner cylinder. An outlet is provided and the first
When the inner cylinder is rotated, the first and third refrigerant communication ports are communicated to introduce the refrigerant into the first cylinder chamber of the first inner cylinder, and the second and fourth refrigerant communication ports are communicated. Then, the refrigerant in the first cylinder chamber is led out.

Further, a fifth refrigerant flow port and a sixth refrigerant flow port are provided on the cylinder wall of the outer cylinder, and a seventh refrigerant flow port and an eighth refrigerant flow port are provided on the cylinder wall of the second inner cylinder. A flow port is provided, and when the second inner cylinder is rotated, the fifth and seventh refrigerant communication ports are communicated to introduce a refrigerant into the second cylinder chamber of the second inner cylinder, and the sixth and seventh refrigerants are introduced. Eight refrigerant passages are communicated with each other, and the refrigerant in the second cylinder chamber is led out.

As described above, the first and second inner cylinders are formed of a synthetic resin molded product.

The first inner cylinder is connected to a drive shaft on the axis thereof to support the first inner cylinder so that the first inner cylinder can be rotated forward and backward. Are connected by a rotation transmitting member disposed on the same axis as that of the first inner cylinder, and the forward / reverse rotation of the first inner cylinder is transmitted to the second inner cylinder to be integrally rotated.

The rotation of the first and second inner cylinders causes the first and third coolant passages and the sixth and eighth coolant passages to be closed, and at the same time, the second and fourth coolant passages to be closed. Refrigerant outlet and fifth
A communication state of the seventh refrigerant passage is formed, and a bypass flow path is provided for communicating the first cylinder chamber and the second cylinder chamber at the time of the communication, so that the refrigerant flows through the indoor refrigerant circuit or the outdoor refrigerant circuit. To perform leak inspections.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment (See FIGS. 1 to 4) FIGS. 1 to 4 show a first embodiment of a refrigerant control valve according to a first invention.

The refrigerant control valve according to the present invention has a structure in which an inner cylinder 2A is provided inside an outer cylinder 1, and the inner cylinder 2A is rotatably supported on the same axis as the outer cylinder 1. .

A first refrigerant flow port 3 and a second refrigerant flow port 4 are provided on the cylinder wall of the outer cylinder 1 and the inner cylinder 2
A third refrigerant flow port 5 and a fourth refrigerant flow port 6 are provided on the cylindrical wall of A, and the first and third refrigerant flow ports 3 and 5 are communicated when the inner cylindrical body 2A rotates. The refrigerant is introduced into the cylindrical chamber 11A of the cylindrical body 2A, and the refrigerant in the cylindrical chamber 11A is derived by connecting the second and fourth refrigerant communication ports 4, 6 to each other. As a suitable example, the first to fourth refrigerant communication ports 3, 4,
5 and 6 are arranged on the same circular locus.

Preferably, the inner cylinder 2A is formed of a synthetic resin molded product.

The outer diameter of the inner cylinder 2A is substantially the same as the inner diameter of the outer cylinder 1, and the outer peripheral surface (circumferential surface) of the inner cylinder 2A and the inner peripheral surface (circumferential surface) of the outer cylinder 1 are formed. And guides the rotation of the inner cylinder 2A. The inner cylinder 2A is a bottomed cylinder whose one end in the axial direction is open and the other end is closed. The inner cylinder 2A is closed by a first end plate 15 fixed to the outer cylinder 1 to be closed, that is, the open surface of the inner cylinder 2A is in contact with the first end plate 15, and the bottom plate of the inner cylinder 2A is connected to the outer cylinder. 1 is in contact with a fixed second end plate 16 that closes the other end in the axial direction, and
A is guided and rotated by the inner peripheral surface of the outer cylindrical body 1 and the first and second end plates 15 and 16. The outer cylinder 1 and first and second
The end plates 15 and 16 are both made of metal.

The axis is a rotation axis passing through the center of the inner cylinder 2A and the outer cylinder 1, and a drive shaft 12 is connected to one end of the rotation axis to reverse the forward rotation of the inner cylinder 2A. Get rotation. A motor 17 is used as a drive source of the drive shaft 12, and the rotational driving force of the motor 17 is transmitted to the drive shaft 12 via a reduction gear 18, and the rotation is transmitted in the forward and reverse directions according to the rotation direction of the motor 17. To rotate.

More specifically, a magnet 19 is provided on the drive shaft of the motor 17, and the magnet 19 and the reduction gear mechanism 1 are provided.
8, the magnetic body 20 provided at the end of the input shaft 21 is opposed to the magnetic body 20 in a non-contact manner, the input shaft 21 is rotated by the magnetic coupling between the magnetic body 20 and the magnet 19, and the gear provided on the input shaft 21 is further provided. And a gear provided on an output shaft 22 parallel to the input shaft 21 are meshed in multiple stages, and the output shaft 22 is rotated at a reduced speed.

The drive shaft 12 is connected to the end of the output shaft 22, and the drive shaft 12 is rotated at a reduced speed. The drive shaft 1
One end of 2 is integrally connected to the end of the output shaft 22 by press-fitting or the like, and the other end penetrates the center through which the axis of the first end plate 15 passes and is detachably engageable with the transmission member 23 in the cylindrical chamber 11A. Let me combine.

The transmitting member 23 has a U-shape. The U-shaped transmitting member 23 is provided in the cylindrical chamber 11A, and the opposite arm ends are formed in the bottom wall inner surface of the inner cylindrical body 2A. 25
And the arm connecting portion of the U-shaped transmitting member 23 is removably engaged with the engaging portion 24 provided at the end of the drive shaft 12, so that the rotation of the drive shaft 12 is restricted by the engaging portion. The rotation of the U-shaped transmission member 23 is transmitted to the inner cylindrical body 2A via the engagement portion at the arm end, and the rotation is transmitted.

The drive shaft 12 is an example of the engagement portion 24.
An engagement groove is provided at an end of the arm, and an arm connecting portion is engaged in the groove to transmit rotation of the drive shaft 12 to the U-shaped transmission member 23.

As shown in FIGS. 3C and 4C, a detent is provided for setting the forward rotation angle and the reverse rotation angle of the drive shaft 12 and the inner cylinder 2A. A flange 38 is provided, an arc-shaped notch 39 for setting a rotation angle is provided on the flange 38, and a stop pin 40 integral with the outer cylinder 1 is brought into contact with one end face of the arc-shaped notch 39 in one direction. , And a stop pin 40 is brought into contact with the other end surface to limit the rotation in the other direction.

<Second Embodiment> (See FIGS. 5 to 9) FIGS. 5 to 9 show a second embodiment of the refrigerant control valve according to the second invention.

The inner cylinder 2 described in the first embodiment
A can be replaced with the first inner cylinder 2A. Therefore, the description of [0017] to [0026] relating to the relationship between the inner cylinder 2A and the outer cylinder 1 and the drive mechanism, the transmission mechanism, and the like are all incorporated.

This refrigerant control valve has a first inner cylinder 2A and a second inner cylinder 2B provided inside an outer cylinder 1 and the first and second inner cylinders 2B.
A and 2B are configured to be rotatably supported on the same axis as the outer cylinder 1.

As described above, the first coolant passage 3 and the second coolant passage 4 are provided on the cylinder wall of the outer cylinder 1,
A third refrigerant flow port 5 and a fourth refrigerant flow port 6 are provided on the cylinder wall of the first inner cylinder 2A, and the first and third refrigerant flow ports are provided when the first inner cylinder 2A rotates. 3 and 5 are communicated to introduce a refrigerant into the first cylinder chamber 11A of the first inner cylinder 2A, and the second and fourth refrigerant communication ports 4 and 6 are communicated to form the first cylinder chamber. The configuration is such that the refrigerant in 11A is led out. As a good example,
The first to fourth refrigerant passages 3, 4, 5, 6 are arranged on the same circular locus.

Further, a fifth refrigerant passage 7 and a sixth refrigerant passage 8 are provided on the cylinder wall of the outer cylinder 1, and a seventh refrigerant passage 9 is formed on the cylinder wall of the second inner cylinder 2B. And the eighth refrigerant passage 10 are provided, and the fifth and seventh refrigerant passages 7, 9 are communicated with each other when the second inner cylinder 2B rotates, so that the second inner cylinder 2B
The refrigerant is introduced into the cylinder chamber 11B, and the refrigerant in the second cylinder chamber 11B is led out by connecting the sixth and eighth refrigerant communication ports 8, 10. Preferably, the fifth to eighth refrigerant passages 7, 8, 9, 10 are arranged on the same circular locus.

The outer diameter of the second inner cylinder 2B is the first inner cylinder 2B.
As in A, the inner diameter of the outer cylinder 1 is substantially the same as that of the second inner cylinder 2.
B and the inner peripheral surface of the outer cylinder 1 are in contact with each other and the second inner cylinder 2
Guide the rotation of B.

The outer cylinder 1 has the first end plate 15 closing one end in the axial direction, and the third end plate 28 closing the other end, and further has an intermediate end plate that hermetically isolates the intermediate portion. That is, the second end plate 16 is provided. Therefore, the second end plate 16 is
A storage chamber for the inner cylinder 2A and a storage chamber for the second inner cylinder 2B are defined.

On the other hand, the second inner cylinder 2B is a bottomed cylinder whose one end in the axial direction is open and the other end is closed. Closed, that is, the open surface of the second inner cylinder 2B is in contact with the third end plate 28, and the bottom plate of the second inner cylinder 2B is fixedly provided to close the other end of the outer cylinder 1 in the axial direction. The second inner cylinder 2 </ b> B is guided by the inner peripheral surface of the outer cylinder 1 and the second and third end plates 16 and 28, and is rotated. Outer cylinder 1
The first to third end plates 15, 16, and 28 are all made of metal.

As described above, the first and second inner cylinders 2A, 2A,
2B is formed of a synthetic resin molded product.

As described above, the first inner cylinder 2A is connected to the drive shaft 12 on the axis thereof.
And the first inner cylinder 2A and the second
The inner cylinders 2B are connected to each other by a transmission member 13 arranged coaxially, so that the forward / reverse rotation of the first inner cylinder 2A is transmitted to the second inner cylinder 2B to be integrally rotated.

The transmission member 13 is formed of, for example, a prism.
The prism is inserted through the center of the axis of the second end plate 16, and one end of the prism is engaged with a square bottomed engagement hole 26 formed at the center of the bottom plate of the first inner cylinder 2 </ b> A. The end is the second inner cylinder 2B
Of the first inner cylinder 2A is transmitted to the second inner cylinder 2B via the prismatic transmission member 13 by engaging with the rectangular bottomed engagement hole 27 formed at the center of the bottom plate. This is caused to follow forward or backward.

As shown in FIGS. 3C and 4C, a detent is provided for setting the forward rotation angle and the reverse rotation angle of the drive shaft 12 and the first and second inner cylinders 2A and 2B. For example, a flange 38 is provided on the drive shaft 12 and this flange 3
8, an arc-shaped notch 39 for setting a rotation angle is provided, and a stop pin 40 integral with the outer cylinder 1 abuts on one end surface of the arc-shaped notch 39 to limit rotation in one direction. A stop pin 40 is brought into contact with the other end surface to limit the rotation in the other direction.

The case where the cooling / heating refrigerant circuit is formed by interposing the refrigerant control valve between the indoor refrigerant circuit and the outdoor refrigerant circuit will be described below.

The pipe 3 connected to the fifth refrigerant passage 7
3 is connected to one end of the outdoor heat exchanger 29 via an expansion valve 32, and a pipe 34 connected to the second refrigerant flow port 4 is connected via a four-way valve 31 to a suction port of the compressor 30 (during cooling) or The compressor 30 is connected to a discharge port (during heating), and a four-way valve 3
1 to the other end of the outdoor heat exchanger 29 (for cooling)
Or connected to the pipe 34 (at the time of heating).

A pipe 35 connected to the first refrigerant passage 3
Is connected to one end of the indoor heat exchanger 37, and the other end of the indoor heat exchanger 37 is connected to the pipe 36 connected to the sixth refrigerant passage 8.

The refrigerant cycle at the time of cooling will be described. As shown in FIG. 7, the first and second inner cylinders 2A and 2B are rotated by a predetermined angle by the driving of the driving mechanism, and the first refrigerant passage 3 is rotated. And the third refrigerant communication port 5 are in communication with each other,
The refrigerant passage 4 and the fourth refrigerant passage 6 are brought into a communicating state.

At the same time, the fifth refrigerant passage 7 and the seventh refrigerant passage 9 are brought into communication with each other, and simultaneously, the sixth refrigerant passage 8 and the eighth refrigerant passage 10 are brought into communication.

The high-pressure refrigerant discharged from the discharge port of the compressor 30 flows into the outdoor heat exchanger 29 via the switching refrigerant flow path indicated by the solid line of the four-way valve 31, and flows into the outdoor heat exchanger 29.
After that, the refrigerant flows into the second cylinder chamber 11B through the fifth and seventh refrigerant communication ports 7 and 9 via the expansion valve 32, and the second cylinder chamber 11B
The low-pressure refrigerant in B is supplied to the indoor heat exchanger 37 via the sixth and eighth refrigerant flow ports 8 and 10, and the indoor heat exchanger 37
The low-pressure refrigerant having passed through the first cylinder chamber 11A flows into the first cylinder chamber 11A via the first and third refrigerant communication ports 3 and 5, and the low-pressure refrigerant in the first cylinder chamber 11A flows into the second and fourth refrigerant communication ports 4 and 4. The refrigerant flows into the suction port of the compressor 30 via the switching refrigerant flow path indicated by the solid line of the four-way valve 31 via 6. Therefore, the cooling operation is performed.

Next, the refrigerant cycle during heating will be described. The high-pressure refrigerant discharged from the discharge port of the compressor 30 is:
The high-pressure refrigerant in the first cylinder chamber 11A flows into the first cylinder chamber 11A via the second and fourth refrigerant communication ports 4 and 6 via the switching refrigerant flow path indicated by the dotted line of the four-way valve 31. Is supplied to the indoor heat exchanger 37 via the third refrigerant flow ports 3 and 5, and the low-pressure refrigerant passing through the indoor heat exchanger 37 passes through the sixth and eighth refrigerant flow ports 8 and 10 to the second heat exchanger 37. The low-pressure refrigerant introduced into the cylinder chamber 11B, and the low-pressure refrigerant in the second cylinder chamber 11B is supplied to the fifth and seventh refrigerant communication ports 7,
9, and further supplied to the outdoor heat exchanger 29 via the expansion valve 32, and the low-pressure refrigerant passing through the outdoor heat exchanger 29 passes through the switching refrigerant flow path of the four-way valve 31 shown by the dotted line to the compressor 3.
0 inlet. Therefore, the heating operation is performed.

As shown in FIG. 9, when the cooling and heating are stopped, the power is turned off to stop the compressor 30, and the first and second inner cylinders 2A and 2B are reversely rotated by a predetermined angle by a driving mechanism. Of the first to eighth refrigerant outlets 3, 4, 5, 6,
7, 8, 9, and 10 are put into a non-communication state. Therefore, the flow of the refrigerant between the outdoor refrigerant circuit and the indoor refrigerant circuit is shut off, and heat loss when the compressor 30 is stopped is minimized.

Next, a case where a cooling mechanism for a refrigerant is provided in the above-described cooling and heating device will be described.

That is, a throttle mechanism for adjusting the flow rate of the refrigerant is provided in the first and second inner cylinders 2A and 2B, and the cooling and heating performance is adjusted by providing the throttle mechanism.

As a specific example, the first and third refrigerant passages 3,
The shapes of the fifth and sixth and eighth refrigerant passages 8, 10 are circular holes. Similarly, the second and fifth refrigerant passages 4 and 7 are formed as circular holes.

On the other hand, the shapes of the fourth and seventh refrigerant passages 6, 9 provided on the cylinder walls of the first and second inner cylinders 2A, 2B are elongated holes in the circumferential direction.

When the first and second inner cylinders 2A and 2B are rotated by a predetermined angle, the first and third refrigerant passages 3 and 5, and the sixth and eighth refrigerant passages 8 and 10 are fully open. At the same time, and is in a full communication state. Further, the first and second inner cylinders 2A, 2A
By controlling B to rotate in a stepwise manner, the first, third, sixth, and eighth refrigerant flow openings 3, 5, which are in a full communication state, are controlled.
8 and 10 are brought into a partially communicating state, and so-called squeezing is performed.

On the other hand, the stepwise rotation of the first and second inner cylinders 2A and 2B causes the fourth and seventh refrigerant passages 6 and 9 formed of long holes to also rotate stepwise. The second and fifth refrigerant flow ports 4 and 7 always maintain a state of communication with the long hole in the entire opening area. Therefore, a throttle function in cooling and heating is provided.

Next, a case where a bypass passage 14 is provided in the cooling and heating device will be described.

As shown in FIG. 8, the rotation of the first and second inner cylinders 2A and 2B causes the first and third refrigerant passages 3 and 3 to rotate.
5 and the sixth and eighth refrigerant passages 8 and 10 form a closed state, and at the same time, the second and fourth refrigerant passages 4, 4
6 and the fifth and seventh refrigerant communication ports 7 and 9 are in communication with each other,
Further, a bypass flow path 14 for communicating the first cylinder chamber 11A and the second cylinder chamber 11B at the time of the communication is provided so that the refrigerant can flow in the indoor refrigerant circuit or the outdoor refrigerant circuit to perform a leak test or the like. .

The bypass passage 14 is formed by a through hole formed through the bottom plate of the first inner cylinder 2A, the second end plate 16, and the bottom plate of the second inner cylinder 2B. By rotating the first and second inner cylinders 2A and 2B together, the first and second inner cylinders 2A and 2B are rotated.
The bypass flow path 14 is formed by communicating the through hole provided in B with the through hole provided in the second end plate 16.

In the illustrated example, the first cylinder chamber 11A and the second cylinder chamber 11B communicate with each other through the bypass passage 14, and the outdoor heat exchanger 29, the compressor 30, the four-way valve 31, the expansion valve 3
2 and a bypass flow path 14 to form a refrigerant circuit, which is used for inspection of leakage or the like in the middle of the circuit. That is, the outdoor heat exchanger 29, the compressor 30, the four-way valve 31
And a leak test at the expansion valve 32.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a case where a refrigerant control valve is formed by a single inner cylinder.

FIG. 2 is a plan view of the control valve.

3A is a longitudinal sectional view showing an open state of the control valve, FIG. 3B is a transverse sectional view of the same, and FIG. 3C is a plan view of a stopper when rotating in one direction.

4A is a longitudinal sectional view showing a closed state of the control valve, FIG. 4B is a transverse sectional view of the same, and FIG. 4C is a plan view of a stopper when rotating in the other direction.

FIG. 5 is a longitudinal sectional view showing a case where a refrigerant control valve is formed by first and second inner cylinders.

FIG. 6 is a plan view of the control valve.

7A is a longitudinal sectional view showing an open state of the control valve, FIG. 7B is a sectional view taken along line AA in FIG. 7A, and C is a sectional view taken along line BB in FIG. 7A.

8A is a longitudinal sectional view showing a state of forming a bypass flow path of the control valve, FIG. 8B is a sectional view taken along line AA in FIG. 7A, and FIG.
-B line sectional drawing.

9A is a longitudinal sectional view showing a closed state of the control valve, FIG. 9B is a sectional view taken along line AA in FIG. 9A, and C is a sectional view taken along line BB in FIG. 9A.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer cylinder 2A Inner cylinder, 1st inner cylinder 2B 2nd inner cylinder 3 1st refrigerant flow port 4 2nd refrigerant flow port 5 3rd refrigerant flow port 6 4th refrigerant flow port 7th 5 refrigerant flow port 8 6th refrigerant flow port 9 7th refrigerant flow port 10 8th refrigerant flow port 11A first cylinder chamber 11B second cylinder chamber 12 drive shaft 13 transmission member 14 bypass flow path 15 first end Plate 16 Second end plate 17 Motor 18 Reduction gear mechanism 19 Magnet 20 Magnetic body 21 Input shaft 22 Output shaft 23 Transmission member 24 Engagement unit 25, 26, 27 Engagement hole 28 Third end plate 29 Outdoor heat exchanger 30 Compression Machine 31 four-way valve 32 expansion valve 33,34 pipe 35,36 pipe 37 indoor heat exchanger 38 flange 39 arc-shaped notch 40 stop pin

Claims (6)

[Claims] 1. An inner cylinder body is provided inside an outer cylinder body, the inner cylinder body is rotatably supported on the same axis as the outer cylinder body, and a first refrigerant flow opening is provided in a cylinder wall of the outer cylinder body. And a second refrigerant communication port, and a third refrigerant communication port and a fourth refrigerant communication port are provided on the cylinder wall of the inner cylinder, and the first and third refrigerants are rotated when the inner cylinder is rotated. A refrigerant having a configuration in which a refrigerant is introduced into the cylindrical chamber of the inner cylindrical body by communicating the communication port, and a refrigerant in the cylinder chamber is derived by communicating the second and fourth refrigerant communication ports. Control valve. 2. The refrigerant control valve according to claim 1, wherein said inner cylinder is formed of a synthetic resin molded product. 3. A first inner cylinder and a second inner cylinder are provided inside the outer cylinder, and the first and second inner cylinders are rotatably supported on the same axis as the outer cylinder. A first refrigerant flow port and a second refrigerant flow port are provided on the cylindrical wall of the outer cylindrical body, and a third refrigerant flow port and a fourth refrigerant flow port are provided on the cylindrical wall of the first inner cylindrical body, At the time of rotation of the first inner cylinder, the first and third refrigerant communication ports are communicated to introduce a refrigerant into the first cylinder chamber of the first inner cylinder, and the second and fourth refrigerant flow is performed. The outlet communicates with the refrigerant in the first cylinder chamber.
A refrigerant outlet and a sixth refrigerant outlet are provided, and the second
A seventh refrigerant flow port and an eighth refrigerant flow port are provided on the cylindrical wall of the inner cylinder, and the fifth and seventh refrigerant flow ports are communicated with each other when the second inner cylinder rotates. A refrigerant control valve, wherein a refrigerant is introduced into the second cylinder chamber of the inner cylinder, and the refrigerant in the second cylinder chamber is derived by communicating the sixth and eighth refrigerant communication ports. 4. The refrigerant control valve according to claim 3, wherein said first and second inner cylinders are formed of a synthetic resin molded product. 5. A structure in which the first inner cylinder is coupled to a drive shaft, and the first inner cylinder and the second inner cylinder are coupled by a rotation transmitting member disposed on an axis to rotate integrally. 4. The refrigerant control valve according to claim 3, wherein: 6. The first and third refrigerant passages and the sixth and eighth refrigerant passages are closed by the rotation of the first and second inner cylinders. Refrigerant outlet and fifth and seventh
4. The refrigerant control valve according to claim 3, wherein a communication state of the refrigerant communication port is formed, and a bypass flow path communicating the first cylinder chamber and the second cylinder chamber at the time of the communication is provided.