JP2023049260A - Volumetric machine, compressor, cooler and electronic device - Google Patents

Abstract

To provide a volumetric machine capable of suppressing vibration, a compressor, a cooler and an electronic device.SOLUTION: A volumetric machine comprises: a cylindrical guide part; a shaft member that rotates around a rotational axis; a rotary member connected to the shaft member and rotating around the rotational axis; a connection member connected to the rotary member, and moving in an intersection direction with respect to the rotational axis by the rotation of the rotary member; a slide member that has a shaft part along the intersection direction and a piston part provided at the end part of the shaft part in the intersection direction and arranged in the guide part, is connected to the connection member, and slides in the intersection direction; a pressure chamber that is provided in the guide part, and the volume of which changes as the piston part slides; and a first bearing that is a radial bearing provided coaxially with the rotational axis and rotatably supporting the shaft member. The first bearing is arranged radially outside of the rotational axis with respect to a connection region between the connection member and the rotary member.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to positive displacement machines, compressors, cooling devices and electronics.

2. Description of the Related Art Conventionally, positive displacement machines used for compressors for refrigeration and air conditioning, internal combustion engines for driving generators, etc. are known (see, for example, Patent Document 1).
The positive displacement machine described in Patent Document 1 is a hermetic compressor. A hermetic compressor includes a reciprocating member having two piston portions, a cylinder block, two arm portions, two spherical bushings, and two drive shafts having drive arm portions. The two piston parts are supported on the inner cylindrical surface of the cylinder block so as to be able to perform reciprocating motion and rocking motion around the axis in the reciprocating direction. Each of the two arms is rotatably inserted into the inner cylindrical surface of the corresponding spherical bush. The outer spherical portion of each spherical bush is supported by the drive arm portion of the corresponding drive shaft at a position offset from the rotation axis of the drive shaft.
In such a hermetic compressor, the drive arm portion rotates around the drive shaft, and the two arm portions connected to the drive arm portion through the spherical bush move in the reciprocating direction, thereby moving the reciprocating member. Reciprocating motion in the cylinder block. As a result, the piston portion reciprocates and oscillates on the inner cylindrical surface of the cylinder block, so that the working fluid that has flowed into the working space is compressed and then discharged to the outside.

JP-A-9-072275

However, in the positive displacement machine described in Patent Document 1, when the piston moves and the working fluid is compressed, the piston receives pressure in a direction opposite to the moving direction of the piston. Such a pressure in the direction opposite to the moving direction of the piston portion, that is, the pressure in the opposite direction to the moving direction of the reciprocating member may deform the two drive shafts via the two arm portions. In this case, there is a problem that the centers of gravity of the respective drive shafts deviate from each other, resulting in increased vibration. Therefore, there has been a demand for a configuration of a positive displacement machine that can suppress vibration.

A positive displacement machine according to a first aspect of the present disclosure includes a cylindrical guide portion, a shaft member that rotates about a rotation axis, a rotation member that is connected to the shaft member and rotates about the rotation axis, a connecting member that is connected to the rotating member and moves in a direction that intersects the rotating shaft by rotation of the rotating member; a shaft that extends along the intersecting direction; a slide member that is connected to the connecting member and slides in the cross direction; and a pressure chamber that is provided in the guide and whose volume is changed by sliding of the piston. and a first bearing, which is a radial bearing provided coaxially with the rotating shaft and rotatably supporting the shaft member, wherein the first bearing is provided in a connection region between the connecting member and the rotating member. On the other hand, it is arranged radially outside of the rotating shaft.

A compressor according to a second aspect of the present disclosure includes the positive displacement machine according to the first aspect and a driving device that rotates the shaft member, and the piston section compresses gas that has flowed into the pressure chamber. do.

A cooling device according to a third aspect of the present disclosure includes a compressor according to the second aspect, which compresses a gaseous working fluid, and a liquid phase working fluid compressed by the compressor. a condensing section for condensing into a fluid; an expansion section for reducing the pressure of the liquid-phase working fluid condensed by the condensing section to change the state of the working fluid to a state in which the liquid phase and the gas phase are mixed; and cooling. The working fluid that is heat transferably connected to an object and that flows through the expansion portion is changed into the gas phase working fluid by the heat transferred from the cooling object, and the changed gas phase working fluid is converted to the gas phase working fluid. an evaporator that discharges to the compressor.

An electronic device according to a fourth aspect of the present disclosure includes the cooling device according to the third aspect.

1 is a block diagram showing the configuration of an electronic device according to a first embodiment; FIG. Sectional drawing which shows the compressor which concerns on 1st Embodiment. Sectional drawing which expands and shows a part of compressor which concerns on 1st Embodiment. Sectional drawing which shows the compressor with which the electronic device which concerns on 2nd Embodiment is provided. Sectional drawing which shows the compressor with which the electronic device which concerns on 3rd Embodiment is provided. Sectional drawing which shows the compressor with which the electronic device which concerns on 4th Embodiment is provided.

[First embodiment]
A first embodiment of the present disclosure will be described below based on the drawings.
[Configuration of electronic device]
FIG. 1 is a block diagram showing the configuration of an electronic device 1 according to this embodiment.
An electronic device 1 according to the present embodiment includes a CT to be cooled and a cooling device 2, as shown in FIG.
The cooling target CT configures the electronic device 1 . Examples of the CT to be cooled include a control device that controls the electronic device 1 and a power supply device that supplies power to electronic components of the electronic device 1 .

[Configuration of cooling device]
The cooling device 2 cools the cooling object CT. Specifically, the cooling device 2 cools the object CT by circulating a working fluid that changes phases between a liquid phase and a gas phase.
The cooling device 2 includes a compressor 3</b>A, a condenser section 21 , an expansion section 22 , an evaporator section 23 , a plurality of pipes 24 and a cooling fan 25 .

[Schematic configuration of compressor]
The compressor 3A compresses the gas-phase working fluid. That is, the compressor 3</b>A compresses the gaseous-phase working fluid flowing from the evaporator 23 to increase the temperature and pressure of the gaseous-phase working fluid. The vapor-phase working fluid whose temperature and pressure are increased by the compressor 3</b>A flows through the condenser section 21 .
The configuration of the compressor 3A will be detailed later.

[Configuration of Condensing Section]
Condensing section 21 is connected to compressor 3A via pipe 24 . The condensation unit 21 condenses the gaseous-phase working fluid compressed by the compressor 3</b>A, that is, the gaseous-phase working fluid whose temperature and pressure are increased to a liquid-phase working fluid. Specifically, the condensation section 21 exchanges heat between the compressed vapor-phase working fluid and the cooling gas that flows through the condensation section 21 by the cooling fan 25, thereby converting the vapor-phase working fluid into a high-pressure gas. It condenses into a liquid phase working fluid.

[Structure of expansion part]
The expanding section 22 is a decompressor and is connected to the condensing section 21 . The expanding section 22 reduces the pressure of the liquid-phase working fluid condensed by the condensing section 21 to change the state of the working fluid into a state in which the liquid phase and the gas phase are mixed. That is, the expansion section 22 lowers the temperature of the working fluid. The expanding section 22 discharges the working fluid in which the liquid phase and the gas phase are mixed to the evaporating section 23 . The expansion part 22 can be configured by, for example, an expansion valve capable of controlling the evaporation temperature of the liquid-phase working fluid, more specifically, an electronic expansion valve, or can be configured by a capillary tube.

[Structure of evaporator]
The evaporator 23 is connected to the CT to be cooled so as to be heat transferable. The evaporating section 23 evaporates the liquid-phase working fluid flowing from the expansion section 22 by the heat transferred from the object to be cooled to change it into a gas-phase working fluid, and the changed gas-phase working fluid is supplied to the compressor. Drain to 3A. As a result, the heat of the cooling target CT is consumed, and the cooling target CT is cooled.

[Structure of multiple pipes]
A plurality of pipes 24 connect the compressor 3A, the condensation section 21, the expansion section 22, and the evaporation section 23 in a ring. The plurality of pipes 24 are tubular members through which the working fluid can flow.
The multiple pipes 24 include a first pipe 241 , a second pipe 242 , a third pipe 243 and a fourth pipe 244 .
The first pipe 241 connects the compressor 3A and the condenser section 21 .
The second pipe 242 connects the condensation section 21 and the expansion section 22 .
A third pipe 243 connects the expansion section 22 and the evaporation section 23 .
The fourth pipe 244 connects the evaporator 23 and the compressor 3A.
Thus, the cooling device 2 sequentially circulates through the compressor 3A, the first pipe 241, the condenser 21, the second pipe 242, the expansion part 22, the third pipe 243, the evaporator 23, and the fourth pipe 244, and compresses It has a circulation path for the working fluid to flow into the machine 3A again. The circulation path cools the cooling object CT.

[Detailed configuration of compressor]
FIG. 2 is a cross-sectional view showing the compressor 3A.
As described above, the compressor 3</b>A compresses the gas-phase working fluid flowing from the evaporator 23 and discharges it to the condenser 21 . More specifically, the compressor 3A is a reciprocating compressor that compresses gas-phase working fluid by reciprocating a first piston portion 542 and a second piston portion 543, which will be described later. The compressor 3A, as shown in FIG. 2, includes a drive device 4 and a positive displacement machine 5A.

In the following description, the two directions orthogonal to each other are the +X direction and the +Y direction. The +X direction is along the rotation axis of the first shaft member 511 to be described later and is the direction from the first shaft member 511 to the second shaft member 512 . That is, the right direction in the drawing view of FIG. 2 is the +X direction. In addition, the +Y direction is along the reciprocating direction of the slide member 54 to be described later, and of the first piston portion 542 and the second piston portion 543 that the slide member 54 has, the second piston portion 543 to the first piston portion 542 direction. That is, the upward direction in the drawing view of FIG. 2 is the +Y direction. The +Y direction is a direction crossing the rotation axis. Furthermore, the direction opposite to the +X direction is the -X direction, and the direction opposite to the +Y direction is the -Y direction. That is, the leftward direction in the drawing view of FIG. 2 is the -X direction, and the downward direction is the -Y direction.

[Configuration of drive device]
The driving device 4 rotates the shaft member 51 of the positive displacement machine 5A around the rotation axis along the +X direction. Two driving devices 4 are provided in the compressor 3A. For convenience of explanation, one of the two drive devices 4 is referred to as a first drive device 41 and the other drive device 4 is referred to as a second drive device 42 .
The first drive device 41 is provided in the -X direction with respect to a later-described slide member 54 of the positive displacement machine 5A. The first drive device 41 rotates the first shaft member 511 of the positive displacement machine 5A around the rotation axis Rx1 along the +X direction.
The second drive device 42 is provided in the +X direction with respect to a later-described slide member 54 of the positive displacement machine 5A. The second driving device 42 rotates the second shaft member 512 of the positive displacement machine 5A in the opposite direction to the first shaft member 511 around the rotation axis Rx2 along the +X direction.

The first driving device 41 and the second driving device 42 are configured by motors in this embodiment.
The first drive device 41 has a first stator 411 and a first case 412 .
The first stator 411 is a rotating portion that rotates the first shaft member 511 . Therefore, the first shaft member 511 to be described later can be said to be the first rotor of the first drive device 41 .
The first case 412 is a case that accommodates the first stator 411 and part of the first shaft member 511 therein. The first case 412 is formed in a cylindrical shape. The first case 412 is fixed to the frame 55 which will be described later.

The second drive device 42 has a second stator 421 and a second case 422 .
The second stator 421 is a rotating part that rotates the second shaft member 512 . Therefore, the second shaft member 512 to be described later can be said to be the second rotor of the second driving device 42 .
The second case 422 is a case that accommodates the second stator 421 and part of the second shaft member 512 inside. The second case 422 is cylindrical. The second case 422 is fixed to the frame 55, which will be described later.
However, each drive device 41, 42 may be configured by a drive device other than a motor.

[Configuration of volumetric machine]
The positive displacement machine 5A is driven by the driving device 4 to compress the gaseous-phase working fluid flowing from the evaporator 23 and discharge the compressed gaseous-phase working fluid. The displacement machine 5A includes a shaft member 51, a rotating member 52, a connecting member 53, a slide member 54, a frame 55, a first sealing member 56, a second sealing member 57, a first bearing 58 and a second bearing 59. .

[Configuration of Shaft Member]
The shaft member 51 is connected to the driving device 4 and rotates around a rotation axis along the +X direction to rotate the rotating member 52 . Two shaft members 51 are provided in the positive displacement machine 5A. For convenience of explanation, one of the two shaft members 51 is referred to as a first shaft member 511 and the other shaft member 51 is referred to as a second shaft member 512 .
The first shaft member 511 is a shaft member arranged in the -X direction. The first shaft member 511 rotates around the rotation axis Rx1 along the +X direction by the first stator 411 of the first drive device 41 to rotate the first rotation member 521 of the rotation member 52 . As described above, the first shaft member 511 corresponds to the first rotor of the first drive device 41 .
The second shaft member 512 is a shaft member arranged in the +X direction. The second shaft member 512 rotates around the rotation axis Rx2 along the +X direction by the second stator 421 of the second drive device 42 to rotate the second rotation member 522 of the rotation member 52 . As mentioned above, the second shaft member 512 corresponds to the second rotor of the second drive device 42 .
An extension line of the rotation axis Rx1 of the first shaft member 511 and an extension line of the rotation axis Rx2 of the second shaft member 512 match each other.

[Configuration of Rotating Member]
The rotating member 52 is a crank that is connected to the shaft member 51 and rotates around the rotation axis of the shaft member 51 . Two rotating members 52 are provided in the positive displacement machine 5A. For convenience of explanation, one of the two rotating members 52 is referred to as a first rotating member 521 and the other rotating member 52 is referred to as a second rotating member 522 .
The first rotating member 521 is connected to the first shaft member 511 and the connecting member 53 and rotates coaxially with the first shaft member 511 together with the first shaft member 511 . That is, the first rotating member 521 is integrated with the first shaft member 511 and rotates together with the first shaft member 511 around the rotation axis Rx1. In other words, the rotation axis Rx<b>1 is the rotation axis of the first rotating member 521 .

The first rotating member 521 has a semicircular first weight CW<b>1 , a hole 5211 , and a spherical bearing 5212 .
The first weight CW1 is a counterweight for reducing vibration caused by the reciprocating motion of the slide member 54 along the +Y direction. The first weight CW1 is positioned in the −Y direction with respect to the rotation axis Rx1 when the slide member 54 slides most in the +Y direction, that is, when the slide member 54 slides to the top dead center. It is provided on the rotating member 521 . In other words, the first weight CW1 is positioned in the +Y direction with respect to the rotation axis Rx1 when the slide member 54 has slid most in the -Y direction, that is, when the slide member 54 has slid to the bottom dead center. , are provided on the first rotating member 521 .
The hole 5211 penetrates the first rotating member 521 along the +X direction. A spherical bearing 5212 is provided in the hole 5211, and the end 531 of the connecting member 53 in the -X direction is inserted into the spherical bearing 5212. As shown in FIG.
A first bearing 58A, which will be described later, is provided on the outside of the first rotating member 521 so as to be coaxial with the rotation axis Rx1 of the first rotating member 521, and the outer peripheral edge of the first rotating member 521 It is connected to the first inner ring 58A2. The structure of the first bearing 58A will be detailed later.

The second rotating member 522 is connected to the second shaft member 512 and the connecting member 53 and rotates coaxially with the second shaft member 512 together with the second shaft member 512 . That is, the second rotating member 522 is integrated with the second shaft member 512 and rotates together with the second shaft member 512 around the rotation axis Rx2. In other words, the rotation axis Rx<b>2 is the rotation axis of the second rotating member 522 .

The second rotating member 522 has a semicircular second weight CW<b>2 , a hole 5221 , and a spherical bearing 5222 .
The second weight CW2, like the first weight CW1, is a counterweight for reducing vibration caused by the reciprocating motion of the slide member 54 along the +Y direction. The second weight CW2 is positioned in the -Y direction with respect to the rotation axis Rx2 when the slide member 54 slides to the top dead center, and is positioned relative to the rotation axis Rx2 when the slide member 54 slides to the bottom dead center. It is provided on the second rotating member 522 so as to be positioned in the +Y direction.
The hole 5221 penetrates the second rotating member 522 along the +X direction. The end portion 532 of the connecting member 53 in the +X direction is inserted into the hole portion 5221 .
Outside the second rotating member 522, a first bearing 58B, which will be described later, is provided coaxially with the rotation axis Rx2 of the second rotating member 522. Connected to the first inner ring. The structure of the first bearing 58B will be detailed later.

[Configuration of connecting member]
The connecting member 53 is connected to the rotating member 52 and moves in a direction crossing the rotation axes Rx1 and Rx2 of the shaft member 51 as the rotating member 52 rotates. That is, the connecting member 53 is an arm member that connects the rotating member 52 and the sliding member 54 and converts the rotational motion of the rotating member 52 into the linear motion of the sliding member 54 .
The end 531 of the −X direction connecting member 53 is inserted into the spherical bearing 5212 of the first rotating member 521 . Similarly, the end 532 of the connecting member 53 in the +X direction is inserted into the spherical bearing 5222 of the second rotating member 522 . When the connecting member 53 is inserted into the holes 5211 and 5221, the connecting member 53 is arranged along the +X direction. The connecting member 53 reciprocates along the +Y direction in accordance with the rotational motion of the first rotating member 521 and the second rotating member 522 rotating in directions opposite to each other.

Although illustration is omitted, when the connecting member 53 moves in the +Y direction or the -Y direction with the rotation of the rotating members 521 and 522, the connecting member 53 moves about the axis along the +Y direction when viewed from the +Y direction. Rotate clockwise or counterclockwise. More specifically, when the connecting member 53 positioned at the bottom dead center is moved in the +Y direction with the rotation of the rotating members 521 and 522, the connecting member 53 is moved until it reaches the half of the movement range in the +Y direction. , in one of the clockwise and counterclockwise directions when viewed from the +Y direction. Also, the connecting member 53 is rotated in the other clockwise or counterclockwise direction when viewed from the +Y direction from the half position of the movement range in the +Y direction until reaching the top dead center. Further, when the connecting member 53 positioned at the top dead center is moved in the -Y direction with the rotation of the rotating members 521 and 522, the connecting member 53 is moved until it reaches the half of the moving range in the -Y direction. , in the other direction of clockwise and counterclockwise when viewed from the +Y direction. Then, the connecting member 53 rotates clockwise or counterclockwise when viewed from the +Y direction from the half position of the movement range in the -Y direction until reaching the bottom dead center. In this way, when the connecting member 53 reciprocates along the +Y direction, it swings clockwise or counterclockwise about the axis along the +Y direction when viewed from the +Y direction.

[Configuration of slide member]
The slide member 54 is connected to the connecting member 53 and reciprocates integrally with the connecting member 53 along the +Y direction. That is, the slide member 54 slides in the +Y direction, which is the crossing direction with respect to the rotation axes Rx1 and Rx2. The slide member 54 has a rod 541 , a first piston portion 542 and a second piston portion 543 .

The rod 541 corresponds to a shaft portion and is a shaft-like member along the +Y direction and connected to the connecting member 53 .
The first piston part 542 is a piston part provided at the end of the rod 541 in the +Y direction. The first piston portion 542 has an outer diameter larger than that of the rod 541 . The first piston part 542 is arranged in a first guide part 552 that constitutes the frame 55, and reciprocates in the first guide part 552 along the +Y direction when the rod 541 reciprocates along the +Y direction. do. The first piston portion 542 has a flow path 5421 , an intake valve 5422 and a piston seal 5423 .

The flow path 5421 penetrates the first piston portion 542 along the +Y direction. The flow path 5421 supplies gas-phase working fluid to the first pressure chamber S2, which is a space in the +Y direction with respect to the first piston portion 542 inside the first guide portion 552 . A space in the -Y direction with respect to the first piston portion 542 inside the first guide portion 552 is a first working chamber S3.
The suction valve 5422 opens when the pressure in the first pressure chamber S2 becomes lower than the pressure in the first working chamber S3, and the gas phase is applied to the first pressure chamber S2 through the flow path 5421. Allow fluid to flow in. The intake valve 5422 is closed when the pressure in the first pressure chamber S2 becomes higher than the pressure in the first working chamber S3.
Such a first piston portion 542 reduces the volume of the first pressure chamber S2 when slid in the +Y direction. As a result, the first piston portion 542 compresses the gas-phase working fluid that has flowed into the first pressure chamber S2. A gas phase working fluid is an example of a gas.

The piston seal 5423 is ring-shaped and provided on the outer peripheral surface of the first piston portion 542 . The piston seal 5423 contacts the inner wall of the first guide portion 552 . The piston seal 5423 is deformed by pressure in the -Y direction generated as the first piston portion 542 approaches the top dead center, and the outer peripheral surface of the first piston portion 542 and the inner wall of the first guide portion 552 are deformed. Seal the space. As a result, the gas-phase working fluid in the first pressure chamber S2 flows out in the -Y direction between the outer peripheral surface of the first piston portion 542 and the inner wall of the first guide portion 552, A decrease in internal pressure is suppressed.

The second piston part 543 is a piston part provided at the end of the rod 541 in the -Y direction. The second piston portion 543 has an outer diameter larger than that of the rod 541 . The second piston part 543 is arranged in the second guide part 554 that constitutes the frame 55, and reciprocates in the second guide part 554 along the +Y direction when the rod 541 reciprocates along the +Y direction. do. The second piston portion 543 has a passageway 5431 , an intake valve 5432 and a piston seal 5433 similar to the passageway 5421 , the intake valve 5422 and the piston seal 5423 of the first piston portion 542 .
Such a second piston portion 543 reduces the volume of the second pressure chamber S4 when slid in the -Y direction. As a result, the second piston portion 543 compresses the gas-phase working fluid that has flowed into the second pressure chamber S4. As noted above, a gas phase working fluid is an example of a gas.

[Frame configuration]
The frame 55 is a housing that houses the main parts of the positive displacement machine 5A. The frame 55 has a housing portion 551 , a first guide portion 552 , a first partition portion 553 , a second guide portion 554 and a second partition portion 555 .

[Structure of housing part]
The accommodating portion 551 forms a mechanism chamber S1 inside. That is, the accommodation portion 551 accommodates a portion of the shaft member 51, the rotating member 52, the connecting member 53, a portion of the slide member 54, the first sealing member 56 and the second sealing member 56 in the mechanism chamber S1. and the member 57 . Specifically, inside the mechanism chamber S1, there are an end of the first shaft member 511 in the +X direction, an end of the second shaft member 512 in the -X direction, a first rotating member 521, and a second rotating member. 522, the connecting member 53, the central portion of the rod 541 in the +Y direction, the first sealing member 56, and the second sealing member 57 are accommodated.
The mechanism chamber S1 has lubricating oil inside. In this embodiment, the amount of lubricating oil is approximately half the volume of the mechanism chamber S1, but the amount is not limited to this and can be changed as appropriate.

[Configuration of the first guide part]
The first guide portion 552 is formed in a cylindrical shape and protrudes from the accommodation portion 551 in the +Y direction. The first piston portion 542 is arranged inside the first guide portion 552, and the first guide portion 552 guides the reciprocating motion of the first piston portion 542 along the +Y direction.
The first guide portion 552 forms a first pressure chamber S2 and a first working chamber S3.
The first pressure chamber S2 is a space in the +Y direction with respect to the first piston portion 542 in the space inside the first guide portion 552 . That is, the first pressure chamber S2 is a space that is provided inside the first guide portion 552 and whose volume changes as the first piston portion 542 slides.
The first working chamber S3 is a space in the -Y direction with respect to the first piston portion 542 in the space inside the first guide portion 552, and is connected to the mechanism chamber S1. That is, the first working chamber S3 is a space provided between the mechanism chamber S1 and the first pressure chamber S2 inside the first guide portion 552 and separated from the first pressure chamber S2 by the first piston portion 542. be. A second sealing member 57 seals between the mechanism chamber S1 and the first working chamber S3.

The first guide portion 552 has a first partition 5521 , a first discharge valve 5523 and a first outflow portion 5524 .
The first partition 5521 partitions the first pressure chamber S2 into a first suction chamber S21, which is a space in the -Y direction, and a first high pressure chamber S22, which is a space in the +Y direction. The first partition wall 5521 is provided with a through hole 5522 penetrating in the +Y direction. The gas-phase working fluid is supplied from the first working chamber S3 to the first suction chamber S21 through the flow path 5421 of the first piston portion 542 .
The first discharge valve 5523 opens when the pressure in the first suction chamber S21 becomes higher than the pressure in the first high pressure chamber S22.
The first outflow portion 5524 is provided in a portion of the first guide portion 552 on the first high pressure chamber S22 side. The first outflow portion 5524 is connected to the first pipe 241 (see FIG. 1).

Then, part of the gas-phase working fluid supplied from the fourth pipe 244 flows into the space in the first guide portion 552 and flows through the flow path 5421 and the intake valve 5422 due to the reciprocating motion of the first piston portion 542. is supplied into the first suction chamber S21. Thereafter, the gas-phase working fluid is compressed by the first piston portion 542 and flows from the first suction chamber S21 into the first high-pressure chamber S22 via the first discharge valve 5523, and then from the first outflow portion 5524. It flows out to the first pipe 241 .

[Configuration of first partition]
The first partition portion 553 is provided at the connection portion between the housing portion 551 and the first guide portion 552, and is a partition portion that partitions the mechanism chamber S1 and the first working chamber S3. The first partition portion 553 is provided in a portion of the first guide portion 552 on the accommodation portion 551 side, and protrudes in the inner diameter direction of the first guide portion 552 . The first partition portion 553 has a communication hole 5531 and an arrangement portion 5532 .
The communication hole 5531 penetrates the first partition 553 in the +Y direction, and the rod 541 of the slide member 54 is inserted along the +Y direction. That is, through the communication hole 5531, the first working chamber S3 is connected to the mechanism chamber S1.
The placement portion 5532 is a portion of the first partition portion 553 where the second sealing member 57 is placed. The second sealing member 57 will be detailed later.

[Configuration of the second guide section]
The second guide portion 554 is formed in a cylindrical shape and protrudes from the accommodation portion 551 in the -Y direction. The second piston portion 543 is arranged inside the second guide portion 554, and the second guide portion 554 guides the reciprocating motion of the second piston portion 543 along the +Y direction.
The second guide portion 554 constitutes a second pressure chamber S4 and a second working chamber S5.
The second pressure chamber S4 is a space in the −Y direction with respect to the second piston portion 543 in the space inside the second guide portion 554 . That is, the second pressure chamber S4 is a space that is provided inside the second guide portion 554 and whose volume changes as the second piston portion 543 slides.
The second working chamber S5 is a space in the +Y direction with respect to the second piston portion 543 in the space inside the second guide portion 554, and is connected to the mechanism chamber S1. That is, the second working chamber S5 is a space provided between the mechanism chamber S1 and the second pressure chamber S4 inside the second guide portion 554 and separated from the second pressure chamber S4 by the second piston portion 543. be. A second sealing member 57 seals between the mechanism chamber S1 and the second working chamber S5.

The second guide portion 554 has a second partition wall 5541, a second discharge valve 5543 and a second outlet portion 5544 similar to the first partition wall 5521, the first discharge valve 5523 and the first outlet portion 5524 of the first guide portion 552. .
The second partition 5541 partitions the first pressure chamber S2 into a second suction chamber S41, which is a space in the +Y direction, and a second high pressure chamber S42, which is a space in the -Y direction. The second partition wall 5541 is provided with a through hole 5542 penetrating in the +Y direction, and the second suction chamber S41 and the second high pressure chamber S42 communicate with each other through the through hole 5542 . The working fluid is supplied from the second working chamber S5 to the second suction chamber S41 through the flow path 5431 of the second piston portion 543. As shown in FIG.
The second discharge valve 5543 opens when the pressure in the second suction chamber S41 becomes higher than the pressure in the second high pressure chamber S42.
The second outflow portion 5544 is provided in a portion of the second guide portion 554 on the second high pressure chamber S42 side. The second outflow portion 5544 is connected to the first pipe 241 .

The other part of the gas-phase working fluid supplied from the fourth pipe 244 flows into the space inside the second guide portion 554 and flows through the flow path 5431 and the suction valve 5432 due to the reciprocating motion of the second piston portion 543 . to the second suction chamber S41. Thereafter, the gas-phase working fluid is compressed by the second piston portion 543, flows from the second suction chamber S41 into the second high-pressure chamber S42 via the second discharge valve 5543, and flows from the second outflow portion 5544. It flows out to the first pipe 241 .

[Configuration of Second Compartment]
The second partition portion 555 is provided at the connection portion between the housing portion 551 and the second guide portion 554, and is a partition portion that partitions the mechanism chamber S1 and the second working chamber S5. The second partition portion 555 is provided in a portion of the second guide portion 554 on the side of the housing portion 551 and protrudes in the inner diameter direction of the second guide portion 554 . The second partition portion 555 has a communication hole 5551 and an arrangement portion 5552 .
The communication hole 5551 penetrates the second partition 555 in the +Y direction, and the rod 541 of the slide member 54 is inserted along the +Y direction. That is, through the communication hole 5551, the second working chamber S5 is connected to the mechanism chamber S1.
The placement portion 5552 is a portion of the second partition portion 555 where the second sealing member 57 is placed. The second sealing member 57 will be detailed later.

[Configuration of first sealing member]
The first sealing member 56 is a member that prevents movement of lubricating oil. Specifically, the first sealing member 56 is a ring-shaped oil seal that seals the inside of the mechanism chamber S1 and restricts the movement of the lubricating oil enclosed in the mechanism chamber S1 to the outside of the mechanism chamber S1. is. Two first sealing members 56 are provided in the positive displacement machine 5A. For convenience of explanation, one first sealing member 56 of the two first sealing members 56 is referred to as a first sealing member 56A, and the other first sealing member 56 is referred to as a first sealing member 56B.
The first sealing member 56A is a ring-shaped member arranged between the inner wall of the mechanism chamber S1 and the first shaft member 511 of the shaft member 51, and is made of an elastic material such as rubber. The first sealing member 56A is fixed to the inner wall of the mechanism chamber S1, and the inner end of the first sealing member 56A is connected to the outer peripheral surface of the first shaft member 511. As shown in FIG.
Like the first sealing member 56A, the first sealing member 56B is a ring-shaped member arranged between the inner wall of the mechanism chamber S1 and the second shaft member 512 of the shaft member 51, and is made of elastic material such as rubber. made of material. The first sealing member 56B is fixed to the inner wall of the mechanism chamber S1, and the inner end of the first sealing member 56B is connected to the outer peripheral surface of the first shaft member 511. As shown in FIG.

[Configuration of second sealing member]
The second sealing member 57 is a member that prevents movement of lubricating oil. Specifically, the second sealing member 57 seals the mechanism chamber S1 to restrict the movement of the lubricating oil enclosed in the mechanism chamber S1 to the outside of the mechanism chamber S1. Two second sealing members 57 are provided in the compressor 3A. For convenience of explanation, one of the two second sealing members 57 is referred to as a second sealing member 57A, and the other second sealing member 57 is referred to as a second sealing member 57B.
The second sealing member 57A is a ring-shaped oil seal arranged between the inner wall of the mechanism chamber S1 and the slide member 54, and is provided in the arrangement portion 5532 of the first partition portion 553. As shown in FIG.
The second sealing member 57B is a ring-shaped oil seal arranged between the inner wall of the mechanism chamber S1 and the slide member 54, and is provided in the arrangement portion 5552 of the second partition portion 555. As shown in FIG.

[Configuration of the first bearing]
The first bearing 58 rotatably supports the shaft member 51 and suppresses deformation of the shaft member 51 . Two first bearings 58 are provided in the positive displacement machine 5A. For convenience of explanation, one of the two first bearings 58 is referred to as a first bearing 58A, and the other first bearing 58 is referred to as a first bearing 58B.

FIG. 3 is a cross-sectional view showing an enlarged part of the compressor 3A.
As shown in FIG. 3, the first bearing 58A is provided coaxially with the rotation axis Rx1 of the first shaft member 511 and the first rotation member 521, and rotates around the rotation axis Rx1. It is a radial bearing that rotatably supports 521. The first bearing 58A is provided between the inner wall 5511 of the housing portion 551 of the frame 55 and the first rotating member 521 .
The first bearing 58A is arranged radially outside of the rotation axis Rx1 with respect to the spherical bearing 5212, which is a connection area between the coupling member 53 and the first rotation member 521, and to support the radial load of In addition, the first bearing 58A sandwiches the center of gravity of the first weight CW1 in the radial direction of the first rotating member 521. As shown in FIG. That is, the first weight CW1 is arranged inside the first bearing 58A.

The first bearing 58A is a radial rolling bearing, more specifically a deep groove ball bearing. That is, the first bearing 58A is a radial ball bearing. The first bearing 58A has a first outer ring 58A1, a first inner ring 58A2 and a plurality of first balls 58A3.
The first outer ring 58A1 is fixed to the inner wall 5511. As shown in FIG.
The first inner ring 58A2 is relatively rotatable with respect to the first outer ring 58A1. The outer peripheral edge of the first rotating member 521 is connected to the inner peripheral edge of the first inner ring 58A2.
The plurality of first balls 58A3 are provided along the circumferential direction around the rotation axis Rx1 between the first outer ring 58A1 and the first inner ring 58A2.
The first bearing 58A supports the first rotating member 521 so as to be rotatable about the rotation axis Rx1, and thus the first shaft member 511 integrated with the first rotating member 521 rotates about the rotation axis Rx1. rotatably supported on the

As shown in FIG. 2, the first bearing 58B is provided coaxially with the rotation axis Rx2 of the second shaft member 512 and the second rotation member 522, and rotates around the rotation axis Rx2. It is a radial bearing that rotatably supports 522 . The first bearing 58B is provided between the inner wall 5511 of the housing portion 551 and the second rotating member 522 .
The first bearing 58B is arranged radially outside of the rotation axis Rx1 with respect to the spherical bearing 5222, which is the connection area between the coupling member 53 and the second rotation member 522, and the second shaft member 512 and the second rotation member 522 to support the radial load of Also, the first bearing 58B sandwiches the center of gravity of the second weight CW2 in the radial direction of the second rotating member 522 . That is, the second weight CW2 is arranged inside the first bearing 58B.

The first bearing 58B is a radial rolling bearing, more specifically a deep groove ball bearing. That is, the first bearing 58B is a radial ball bearing. Although detailed illustration is omitted, the first bearing 58B includes a first outer ring, a first inner ring, and a plurality of first balls similar to the first outer ring 58A1, the first inner ring 58A2, and the plurality of first balls 58A3 of the first bearing 58A. have
A first outer ring of the first bearing 58B is fixed to the inner wall 5511 of the frame 55 .
The first inner ring of the first bearing 58B is relatively rotatable with respect to the first outer ring. The outer peripheral edge of the second rotating member 522 is connected to the inner peripheral edge of the first inner ring.
The plurality of first balls of the first bearing 58B are provided along the circumferential direction about the rotation axis Rx2 between the first outer ring and the first inner ring.
With such a first bearing 58B, the second rotating member 522 is rotatably supported around the rotation axis Rx2. rotatably supported on the

[Configuration of the second bearing]
The second bearing 59 , together with the first bearing 58 , applies preload to the shaft member 51 in the extension direction of the shaft member 51 and suppresses vibration during rotation of the shaft member 51 . As shown in FIG. 2, two second bearings 59 are provided in the positive displacement machine 5A. For convenience of explanation, one of the two second bearings 59 is referred to as a second bearing 59A, and the other second bearing 59 is referred to as a second bearing 59B.

59 A of 2nd bearings suppress the vibration at the time of rotation of the 1st shaft member 511 by giving a preload to the 1st shaft member 511 in the extension direction of the 1st shaft member 511 with 58 A of 1st bearings. As shown in FIG. 3, the second bearing 59A is provided between the inner wall 4121 of the first case 412 and the first shaft member 511, and allows the first shaft member 511 to rotate about the rotation axis Rx1. To support.
59 A of 2nd bearings are radial bearings which support the load of the radial direction of the 1st shaft member 511, Specifically, it is a radial rolling bearing, More specifically, it is a deep groove ball bearing. That is, the second bearing 59A is a radial ball bearing.

The second bearing 59A has a second outer ring 59A1, a second inner ring 59A2 and a plurality of second balls 59A3.
The second outer ring 59A1 is fixed to the inner wall 4221. As shown in FIG.
The second inner ring 59A2 is relatively rotatable with respect to the second outer ring 59A1. The outer peripheral edge of the first shaft member 511 is connected to the inner peripheral edge of the second inner ring 59A2.
The plurality of second balls 59A3 are provided between the second outer ring 59A1 and the second inner ring 59A2 along the circumferential direction around the rotation axis Rx1.
A second bearing 59A provided in the first case 412 supports the first shaft member 511 so as to be rotatable around the rotation axis Rx1.

The second bearing 59B, together with the first bearing 58B, applies a preload to the second shaft member 512 in the direction in which the second shaft member 512 extends, thereby suppressing deformation of the second shaft member 512. Vibration during rotation of the member 512 is suppressed. The second bearing 59B is provided between the inner wall 4221 of the second case 422 and the second shaft member 512, and rotatably supports the second shaft member 512 about the rotation axis Rx2.
The second bearing 59B is a radial bearing that supports the radial load of the second shaft member 512, more specifically a radial rolling bearing, more specifically a deep groove ball bearing. That is, the second bearing 59B is a radial ball bearing.

Although not shown, the second bearing 59B has a second outer ring, a second inner ring, and a plurality of second balls similar to the second outer ring 59A1, the second inner ring 59A2, and the plurality of second balls 59A3.
A second outer ring of the second bearing 59B is fixed to the inner wall 4221 of the second case 422 .
The second inner ring of the second bearing 59B is relatively rotatable with respect to the second outer ring. The outer peripheral edge of the second shaft member 512 is connected to the inner peripheral edge of the second inner ring of the second bearing 59B.
The plurality of second balls of the second bearing 59B are provided along the circumferential direction about the rotation axis Rx1 between the second outer ring and the second inner ring in the second bearing 59B.
A second bearing 59B provided in the second case 422 supports the second shaft member 512 so as to be rotatable about the rotation axis Rx2.

[Actions of the first bearing and the second bearing]
For example, when the first piston portion 542 moves in the +Y direction and the gas-phase working fluid that has flowed into the first pressure chamber S2 is compressed, the -Y direction pressure is applied to the first piston portion 542 . Such pressure applied to the slide member 54 may deform the first shaft member 511 via the connecting member 53 and the first rotating member 521, and may cause the second shaft member 511 to deform via the connecting member 53 and the second rotating member 522. There is a risk of deforming the member 512 . In this case, there is a problem that the center of gravity of each shaft member 511, 512 deviates from the ideal position, and the vibration generated when each shaft member 511, 512 rotates increases.
On the other hand, in the positive displacement machine 5A, a first bearing 58A is provided in which the first outer ring 58A1 is fixed to the inner wall 5511 of the frame 55 and the first inner ring 58A2 is connected to the outer peripheral edge of the first rotating member 521. A first bearing 58B having one outer ring fixed to the inner wall 5511 and a first inner ring connected to the outer peripheral edge of the second rotating member 522 is provided.
According to this, since the change in the center position of the first rotating member 521 is suppressed, deformation of the first shaft member 511 connected to the first rotating member 521 can be suppressed. Similarly, since the change in the center position of the second rotating member 522 is suppressed, deformation of the second shaft member 512 connected to the second rotating member 522 can be suppressed. As a result, the center of gravity of each of the shaft members 511 and 512 can be prevented from deviating from the ideal position, so that the vibration generated during rotation of each of the shaft members 511 and 512 can be reduced.

The first bearing 58A and the second bearing 59A apply preload to the first shaft member 511 in the extension direction of the first shaft member 511 . Therefore, it is possible to prevent the first shaft member 511 from shifting in the extension direction of the first shaft member 511 when the first shaft member 511 rotates. As a result, vibration generated when the first shaft member 511 rotates can be reduced.
Similarly, the first bearing 58B and the second bearing 59B apply pressure to the second shaft member 512 in the direction in which the second shaft member 512 extends. Therefore, when the second shaft member 512 rotates, it is possible to prevent the second shaft member 512 from shifting along the extending direction of the second shaft member 512 . As a result, vibration generated when the second shaft member 512 rotates can be reduced.
Therefore, the deformation of the shaft members 511 and 512 can be suppressed, and the vibration when the positive displacement machine 5A is driven and, by extension, the vibration when the compressor 3A is driven can be suppressed.

[Effect of the first embodiment]
The electronic device 1 according to the embodiment described above has the following effects.
The electronic device 1 includes a cooling device 2 .
The cooling device 2 includes a compressor 3</b>A, a condenser section 21 , an expansion section 22 and an evaporator section 23 . The condensation unit 21 condenses the vapor-phase working fluid compressed by the compressor 3A into a liquid-phase working fluid. The expanding section 22 reduces the pressure of the liquid-phase working fluid condensed by the condensing section 21 to change the state of the working fluid into a state in which the liquid phase and the gas phase are mixed. The evaporator 23 is connected to the cooling object CT so as to be heat transferable. The evaporating portion 23 changes the working fluid flowing from the expanding portion 22 into a vapor-phase working fluid by heat transferred from the object to be cooled CT, and discharges the changed vapor-phase working fluid to the compressor 3A.

The compressor 3A compresses the gaseous working fluid. The compressor 3A comprises a drive 4 and a positive displacement machine 5A. The driving device 4 rotates the shaft member 51 of the positive displacement machine 5A. The first piston portion 542 of the positive displacement machine 5A compresses the gas-phase working fluid that has flowed into the first pressure chamber S2, and the second piston portion 543 of the positive displacement machine 5A flows into the second pressure chamber S4. Compress the gas phase working fluid. The first piston portion 542 and the second piston portion 543 correspond to the piston portion, and the first pressure chamber S2 and the second pressure chamber S4 correspond to the pressure chambers. Also, the gas-phase working fluid is an example of a gas.

The positive displacement machine 5A includes a first guide portion 552, a second guide portion 554, a shaft member 51, a rotating member 52, a connecting member 53, a slide member 54, a first pressure chamber S2, a second pressure chamber S4, and a first bearing 58A. , 58B.
Each of the first guide portion 552 and the second guide portion 554 is a tubular guide portion and constitutes the frame 55 . The shaft member 51 has a first rotating member 521 that rotates around the rotation axis Rx1 and a second rotation member 522 that rotates around the rotation axis Rx2. The rotating member 52 includes a first rotating member 521 that is connected to the first shaft member 511 and rotates about the rotation axis Rx1, and a second rotating member that is connected to the second shaft member 512 and rotates about the rotation axis Rx2. 522 and . The connecting member 53 is connected to the rotating members 521 and 522 and moves in the ±Y directions as the rotating members 521 and 522 rotate. The ±Y directions correspond to directions crossing the rotation axes Rx1 and Rx2. The slide member 54 is connected to the connecting member 53 and slides in the ±Y directions. The slide member 54 has a rod 541 , a first piston portion 542 and a second piston portion 543 . The rod 541 is a shaft along the ±Y direction. The first piston part 542 is provided at the end of the rod 541 in the +Y direction and arranged inside the first guide part 552 . The second piston part 543 is provided at the end of the rod 541 in the -Y direction and arranged in the second guide part 554 . The first pressure chamber S2 is provided inside the first guide portion 552, and its volume changes as the first piston portion 542 slides. The second pressure chamber S<b>4 is provided inside the second guide portion 554 , and its volume changes as the second piston portion 543 slides.
The first bearing 58A is a radial bearing provided coaxially with the rotation axis Rx1 and rotatably supporting the first shaft member 511 . The first bearing 58A is arranged radially outside of the rotation axis Rx1 with respect to the connection area between the coupling member 53 and the first rotation member 521 . The first bearing 58B is a radial bearing provided coaxially with the rotation axis Rx1 and rotatably supporting the first shaft member 511 . The first bearing 58B is arranged radially outside of the rotation axis Rx2 with respect to the connection area between the coupling member 53 and the second rotation member 522 .

According to such a configuration, the first piston portion 542 moves in the direction of decreasing the volume of the first pressure chamber S2, and the pressure in the direction of increasing the volume of the first pressure chamber S2, that is, in the -Y direction. Even when it is applied to the first shaft member 511 and the second shaft member 512 via the slide member 54, the deformation of the first shaft member 511 can be suppressed by the first bearing 58A, and the deformation of the second shaft member 512 can be suppressed by the first bearing 58A. 58B can be suppressed. Similarly, the second piston portion 543 moves in the direction of decreasing the volume of the second pressure chamber S4, and the pressure in the direction of increasing the volume of the second pressure chamber S4, that is, in the +Y direction is applied through the slide member 54. Even when applied to the first shaft member 511 and the second shaft member 512, deformation of the first shaft member 511 can be suppressed by the first bearing 58A, and deformation of the second shaft member 512 can be suppressed by the first bearing 58B. Therefore, since the center of gravity of each of the shaft members 511 and 512 can be suppressed from deviating from the ideal position, the vibration of the shaft members 511 and 512 during rotation can be suppressed. In addition, as a result, the noise when driving the positive displacement machine 5A and, by extension, the noise when driving the compressor 3A, the cooling device 2, and the electronic device 1 can be reduced.

In the positive displacement machine 5A, each of the rotary members 521 and 522 has weights CW1 and CW2 provided on portions of the slide member 54 opposite to the sliding direction. The first bearing 58A sandwiches the center of gravity of the first weight CW1 in the radial direction of the first rotating member 521. As shown in FIG. Also, the first bearing 58B sandwiches the center of gravity of the second weight CW2 in the radial direction of the second rotating member 522 .
According to such a configuration, it is possible to suppress displacement of the center of gravity of the first weight CW1 due to deformation of the first rotating member 521 due to the pressure described above. Similarly, it is possible to prevent the displacement of the center of gravity of the second weight CW2 due to the deformation of the second rotating member 522 due to the pressure described above. According to this, it is possible to suppress the vibration accompanying the rotation of the rotating members 521 and 522, and to suppress the deformation of the shaft members 511 and 512 connected to the rotating members 521 and 522. Vibration during rotation can be suppressed. Therefore, it is possible to reduce vibration and noise when driving the positive displacement machine 5A, and in turn, reduce vibration and noise when driving the compressor 3A, the cooling device 2, and the electronic device 1.

The positive displacement machine 5A includes a frame 55 that accommodates the rotating members 521 and 522, the connecting member 53 and the sliding member . The first bearing 58A includes a first outer ring 58A1 connected to the inner wall 5511 of the housing portion 551 of the frame 55, and a first inner ring 58A2. The first inner ring 58A2 is connected to the outer peripheral edge of the first rotating member 521 and is rotatable with respect to the first outer ring 58A1. The first bearing 58B also has a similar configuration.
With such a configuration, the first outer ring 58A1 is connected to the inner wall 5511 of the frame 55, so the first bearing 58A can be fixed to the inner wall 5511 of the frame 55. Similarly, the first outer ring of the first bearing 58B is connected to the inner wall 5511 of the frame 55, so the first bearing 58B can be fixed to the inner wall 5511 of the frame 55. The first inner ring 58A2 of the first bearing 58A is connected to the outer peripheral edge of the first rotating member 521, and the first inner ring of the first bearing 58B is connected to the outer peripheral edge of the second rotating member 522. Therefore, deformation of the first shaft member 511 connected to the first rotating member 521 can be effectively suppressed, and deformation of the second shaft member 512 connected to the second rotating member 522 can be effectively suppressed. . Therefore, it is possible to reduce vibration and noise when driving the positive displacement machine 5A, and in turn, reduce vibration and noise when driving the compressor 3A, the cooling device 2, and the electronic device 1.

The compressor 3A has a second bearing 59A that applies preload to the first shaft member 511 in the extending direction of the first shaft member 511, and a preload to the second shaft member 512 in the extending direction of the second shaft member 512. and a second bearing 59B.
Here, as the rotating members 521 and 522 rotate, the connecting member 53 swings about the direction intersecting the rotation axes Rx1 and Rx2 of the shaft members 511 and 512, that is, the axis along the sliding direction of the slide member 54. be moved. The connecting member 53 is connected to the rotating members 521 and 522 , and the rotating members 521 and 522 are connected to the shaft members 511 and 512 . Therefore, when the connecting member 53 is swung, the frictional resistance between the connecting member 53 and the first rotating member 521 causes the first rotating member 521 and the first shaft member 511 to rotate. There is a possibility of deviation along the extending direction. If the first rotating member 521 and the first shaft member 511 are displaced, the vibration during rotation of the first rotating member 521 and the first shaft member 511 increases. Similarly, when the connecting member 53 is swung, frictional resistance between the connecting member 53 and the second rotating member 522 causes the second rotating member 522 and the second shaft member 512 to extend. There is a possibility that it will shift along the output direction. If the second rotating member 522 and the second shaft member 512 are displaced, the vibration during rotation of the second rotating member 522 and the second shaft member 512 increases.
On the other hand, according to the above configuration, the first shaft member 511 is shifted in the extending direction of the first shaft member 511 and the second shaft member 512 is shifted in the extending direction of the second shaft member 512. can be suppressed. Therefore, it is possible to suppress the occurrence of vibration accompanying rotation of the shaft members 511 and 512 . Therefore, it is possible to reduce vibration and noise when driving the positive displacement machine 5A, and in turn, reduce vibration and noise when driving the compressor 3A, the cooling device 2, and the electronic device 1.

In the compressor 3A, the first bearings 58A, 58B and the second bearings 59A, 59B are radial ball bearings. The second bearing 59A applies preload to the first shaft member 511 together with the first bearing 58A, and the second bearing 59B applies preload to the second shaft member 512 together with the first bearing 58B.
According to such a configuration, the first bearings 58A, 58B and the second bearings 59A, 59B can be configured relatively simply, and preload can be applied to the shaft members 511, 512 in the extending direction of the shaft members 511, 512. can be granted. Therefore, the compressor 3A having the above effects can be configured with a simple configuration.

In the compressor 3</b>A, the drive device 4 includes a first drive device 41 and a second drive device 42 . The first drive device 41 includes a first stator 411 that rotates the first shaft member 511 and a first case 412 that accommodates the first stator 411 therein. The second drive device 42 includes a second stator 421 that rotates the second shaft member 512 and a second case 422 that accommodates the second stator 421 therein. The first stator 411 and the second stator 421 correspond to rotating parts, and the first case 412 and the second case 422 correspond to cases. The second bearing 59A has a second outer ring 59A1 connected to the first case 412 and a second inner ring 59A2 connected to the first shaft member 511 and rotatable with respect to the second outer ring 59A1. The second bearing 59B has a second outer ring connected to the second case 422 and a second inner ring connected to the second shaft member 512 and rotatable with respect to the second outer ring.
According to such a configuration, the second bearing 59A that contributes to suppressing displacement of the first shaft member 511 can be arranged inside the first case 412 . Similarly, the second bearing 59B that contributes to suppressing the deviation of the second shaft member 512 can be arranged inside the second case 422 . Therefore, compared to the case where the second outer rings of the second bearings 59A, 59B are fixed to the inner wall of the frame 55, the mounting process of the second bearings 59A, 59B can be simplified.

[Second embodiment]
Next, a second embodiment of the present disclosure will be described.
The electronic device according to this embodiment has the same configuration as the electronic device 1 according to the first embodiment, but differs in the type of the first bearing and the second bearing that constitute the positive displacement machine. In the following description, the same or substantially the same parts as those already described are denoted by the same reference numerals, and the description thereof is omitted.

[Configuration of electronic device and cooling device]
FIG. 4 is a cross-sectional view showing the compressor 3B according to this embodiment.
The electronic device according to the present embodiment has the same configuration and functions as the electronic device 1 according to the first embodiment, except that the compressor 3B shown in FIG. 4 is provided instead of the compressor 3A according to the first embodiment. Prepare. That is, the cooling device included in the electronic device according to the present embodiment has the same configuration and functions as the cooling device 2 according to the first embodiment, except that the compressor 3B is provided instead of the compressor 3A.

[Configuration of Compressor]
Like the compressor 3A, the compressor 3B is a reciprocating compressor that compresses the gas-phase working fluid that flows in from the evaporator 23 via the fourth pipe 244 . The compressor 3B comprises a drive 4 and a positive displacement machine 5B.
The positive displacement machine 5B has the same configuration and functions as the positive displacement machine 5A according to the first embodiment, except that it includes a first bearing 60 and a second bearing 61 instead of the first bearing 58 and the second bearing 59. Prepare. That is, the displacement machine 5B includes a shaft member 51, a rotating member 52, a connecting member 53, a slide member 54, a frame 55, a first sealing member 56, a second sealing member 57, a first bearing 60 and a second bearing 61. Prepare.

[Configuration of the first bearing]
Like the first bearing 58 , the first bearing 60 rotatably supports the shaft member 51 and suppresses deformation of the shaft member 51 . Two first bearings 60 are provided in the positive displacement machine 5B. For convenience of explanation, one of the two first bearings 60 is referred to as a first bearing 60A, and the other first bearing 60 is referred to as a first bearing 60B.

Like the first bearing 58A according to the first embodiment, the first bearing 60A is provided coaxially with the rotation axis Rx1 of the first shaft member 511 and the first rotation member 521, and rotates around the rotation axis Rx1. It is a radial bearing that rotatably supports the member 511 and the first rotating member 521 . The first bearing 60A is provided between the inner wall 5511 of the housing portion 551 of the frame 55 and the first rotating member 521, as shown in FIGS.
The first bearing 60A is arranged radially outside of the rotation axis Rx1 with respect to the spherical bearing 5212, which is the connection area between the coupling member 53 and the first rotation member 521, and the first shaft member 511 and the first rotation member 521 to support the radial load of Further, the first bearing 60A sandwiches the center of gravity of the first weight CW1 in the radial direction of the first rotating member 521. As shown in FIG. That is, the first weight CW1 is arranged inside the first bearing 60B.

The first bearing 60A is a radial slide bearing and has a first outer ring 60A1 and a first inner ring 60A2.
First outer ring 60A1 is fixed to inner wall 5511 .
The first inner ring 60A2 is relatively rotatable with respect to the first outer ring 60A1. The outer peripheral edge of the first rotating member 521 is connected to the inner peripheral edge of the first inner ring 60A2.
With such a first bearing 60A, the first rotating member 521 is rotatably supported around the rotation axis Rx1, and thus the first shaft member 511 integrated with the first rotating member 521 rotates around the rotation axis Rx1. rotatably supported on the

Like the first bearing 58B according to the first embodiment, the first bearing 60B is provided coaxially with the rotation axis Rx2, and allows the second shaft member 512 and the second rotation member 522 to rotate about the rotation axis Rx2. It is a supporting radial bearing. The first bearing 60B is provided between the inner wall 5511 of the housing portion 551 of the frame 55 and the second rotating member 522, as shown in FIG.
The first bearing 60B is arranged radially outside of the rotation axis Rx2 with respect to the spherical bearing 5222 that is the connection area between the coupling member 53 and the second rotation member 522 . Further, the first bearing 60B sandwiches the center of gravity of the second weight CW2 in the radial direction of the second rotating member 522. As shown in FIG. That is, the second weight CW2 is arranged inside the first bearing 60B.

The first bearing 60B is a radial sliding bearing and has a first outer ring 60B1 and a first inner ring 60B2.
The first outer ring 60B1 is fixed to the inner wall 5511. As shown in FIG.
The first inner ring 60B2 is relatively rotatable with respect to the first outer ring 60B1. The outer peripheral edge of the first rotating member 521 is connected to the inner peripheral edge of the first inner ring 60B2.
With such a first bearing 60B, the second rotating member 522 is rotatably supported about the rotation axis Rx1, and thus the second shaft member 512 integrated with the second rotating member 522 rotates about the rotation axis Rx1. rotatably supported on the

[Configuration of the second bearing]
The second bearing 61 applies a preload to the shaft member 51 in the extending direction of the shaft member 51 and suppresses vibration of the shaft member 51 during rotation. Two second bearings 61 are provided in the positive displacement machine 5B. For convenience of explanation, one of the two second bearings 61 is referred to as a second bearing 61A, and the other second bearing 61 is referred to as a second bearing 61B.

The second bearing 61A applies a preload to the first shaft member 511 in the direction in which the first shaft member 511 extends, thereby suppressing vibration of the first shaft member 511 during rotation. The second bearing 61A is provided between the inner wall 4121 of the first case 412 that constitutes the first driving device 41 and the first shaft member 511, and can rotate the first shaft member 511 about the rotation axis Rx1. to support.

The second bearing 61A is a radial bearing that supports the radial load of the first shaft member 511, more specifically a radial rolling bearing, more specifically a double-row angular bearing. That is, the second bearing 61A is a radial ball bearing. The second bearing 61A has a second outer ring 61A1, a second inner ring 61A2 and a plurality of second balls 61A3.
The second outer ring 61A1 is fixed to the inner wall 4221 of the first case 412 .
The second inner ring 61A2 is rotatable relative to the second outer ring 61A1 around the central axis of the second bearing 61A. The outer peripheral edge of the first shaft member 511 is connected to the inner peripheral edge of the second inner ring 61A2.
The plurality of second balls 61A3 are provided in two rows along the circumferential direction around the rotation axis Rx1 between the second outer ring 61A1 and the second inner ring 61A2.
A second bearing 61A provided in the first case 412 supports the first shaft member 511 so as to be rotatable around the rotation axis Rx1. In addition, the second bearing 61A, which is a double-row angular bearing, can independently apply preload to the first shaft member 511, thereby suppressing displacement of the first shaft member 511 in the extending direction of the first shaft member 511. can.

The second bearing 61B applies a preload to the second shaft member 512 in the direction in which the second shaft member 512 extends, thereby suppressing vibration during rotation of the second shaft member 512 . The second bearing 61B is provided between the inner wall 4221 of the second case 422 that constitutes the second driving device 42 and the first shaft member 511, and is capable of rotating the second shaft member 512 around the rotation axis Rx2. to support.

The second bearing 61B is a radial bearing that supports the radial load of the second shaft member 512, more specifically a radial rolling bearing, more specifically a double-row angular bearing. That is, the second bearing 61B is a radial ball bearing. The second bearing 61B has a second outer ring 61B1, a second inner ring 61B2 and a plurality of second balls 61B3.
The second outer ring 61B1 is fixed to the inner wall 4221 of the second case 422. As shown in FIG.
The second inner ring 61B2 is rotatable relative to the second outer ring 61B1 about the central axis of the second bearing 61B. The outer peripheral edge of the second shaft member 512 is connected to the inner peripheral edge of the second inner ring 61B2.
The plurality of second balls 61B3 are provided in two rows along the circumferential direction around the rotation axis Rx2 between the second outer ring 61B1 and the second inner ring 61B2.
A second bearing 61B provided in the second case 422 supports the second shaft member 512 so as to be rotatable around the rotation axis Rx1. In addition, the second bearing 61B, which is a double-row angular bearing, can independently apply preload to the second shaft member 512, thereby suppressing displacement of the second shaft member 512 in the extending direction of the second shaft member 512. can.

[Actions of the first bearing and the second bearing]
In the positive displacement machine 5B, the first outer ring 60A1 is fixed to the inner wall 5511 of the frame 55, and the first inner ring 60A2 is connected to the outer peripheral edge of the first rotating member 521 by the first bearing 60A. A change in position is suppressed, and thus deformation of the first shaft member 511 is suppressed. This prevents the center of gravity of the first shaft member 511 from deviating from the ideal position, and reduces vibration and noise generated when the first shaft member 511 rotates. Similarly, by providing the first bearing 60B, deformation of the second shaft member 512 is suppressed, and vibration and noise during rotation of the second shaft member 512 are reduced.

The second bearing 61A independently applies preload to the first shaft member 511 in the extension direction of the first shaft member 511 . As a result, displacement of the first shaft member 511 in the extending direction of the first shaft member 511 is suppressed, and vibration and noise during rotation of the first shaft member 511 are reduced. Similarly, the second bearing 61B suppresses displacement of the second shaft member 512 in the extension direction of the second shaft member 512, and reduces vibration and noise when the second shaft member 512 rotates.
It is assumed that the second bearings 61A and 61B are double-row angular bearings. However, the invention is not limited to this, and at least one of the second bearings 61A and 61B may be a cross roller bearing.

[Effect of Second Embodiment]
The electronic device according to the present embodiment described above has the following effects in addition to the same effects as the electronic device 1 according to the first embodiment.
In the compressor 3B, the first bearings 60A, 60B are radial sliding bearings, and the second bearings 61A, 61B are one of double row angular bearings and cross roller bearings.
According to such a configuration, deformation of the shaft members 511 and 512 can be suppressed by the first bearings 60A and 60B. In addition, the second bearings 61A and 61B can apply preload to the shaft members 511 and 512, thereby suppressing displacement of the shaft members 511 and 512. As shown in FIG. Therefore, it is possible to reduce vibration and noise during driving of the displacement machine 5B.

[Third embodiment]
Next, a third embodiment of the present disclosure will be described.
The electronic device according to this embodiment has the same configuration as the electronic device according to the second embodiment, but differs in the configuration of the second bearing that constitutes the positive displacement machine, and the positive displacement machine further includes a third bearing. They are different in that respect. In addition, in the following description, the same or substantially the same parts as those already described are given the same reference numerals, and the description thereof will be omitted.

[Configuration of electronic device and cooling device]
FIG. 5 is a cross-sectional view showing a compressor 3C according to this embodiment.
The electronic device according to the present embodiment has the same configuration and functions as the electronic device 1 according to the first embodiment, except that the compressor 3C shown in FIG. 5 is provided instead of the compressor 3A according to the first embodiment. Prepare. That is, the cooling device included in the electronic device according to the present embodiment has the same configuration and functions as the cooling device 2 according to the first embodiment, except that the compressor 3C is provided instead of the compressor 3A.

[Configuration of Compressor]
The compressor 3C is a reciprocating compressor that compresses the gas-phase working fluid flowing from the evaporator 23 through the fourth pipe 244, like the compressor 3A. The compressor 3C comprises a drive 4 and a positive displacement machine 5C.
The positive displacement machine 5C has the same configuration and functions as the positive displacement machine 5B according to the second embodiment except that the second bearing 59 is provided instead of the second bearing 61 and the third bearing 62 is provided. That is, the positive displacement machine 5C includes a shaft member 51, a rotating member 52, a connecting member 53, a slide member 54, a frame 55, a first sealing member 56, a second sealing member 57, a first bearing 60, a second bearing 59. and a third bearing 62 .
Two first bearings 60 are provided in the positive displacement machine 5C, and each first bearing 60 is a radial slide bearing. Two second bearings 59 are provided in the positive displacement machine 5C, and each second bearing 59 is a radial rolling bearing.

[Configuration of the third bearing]
The third bearing 62 , along with the second bearing 59 , applies preload to the shaft member 51 in the extension direction of the shaft member 51 , suppresses displacement of the shaft member 51 in the extension direction of the shaft member 51 , Suppresses vibration during rotation. Two third bearings 62 are provided in the positive displacement machine 5C. For convenience of explanation, one of the two third bearings 62 is referred to as a third bearing 62A, and the other third bearing 62 is referred to as a third bearing 62B.

The third bearing 62A applies preload to the first shaft member 511 in the extending direction of the first shaft member 511 together with the second bearing 59A. The third bearing 62A is arranged closer to the first rotary member 521 than the second bearing 59A. More specifically, the third bearing 62A is positioned on the side opposite to the second bearing 59A in the first driving device 41, and is located between the inner wall 4121 of the first case 412 and the first shaft member 511 that constitute the first driving device 41. provided between The third bearing 62A rotatably supports the first shaft member 511 around the rotation axis Rx1.

The third bearing 62A is a thrust bearing, more specifically a thrust rolling bearing, more specifically a thrust ball bearing. The third bearing 62A has a housing washer 62A1, a shaft washer 62A2 and a plurality of third balls 62A3.
Housing washer 62A1 is fixed to inner wall 4121 .
The shaft washer 62A2 is rotatable relative to the housing washer 62A1 about the central axis of the third bearing 62A. The outer peripheral edge of the first shaft member 511 is connected to the inner peripheral edge of the shaft washer 62A2.
The plurality of third balls 62A3 are provided along the circumferential direction around the rotation axis Rx1 between the housing washer 62A1 and the shaft washer 62A2.

The third bearing 62B applies preload to the second shaft member 512 in the extending direction of the second shaft member 512 together with the second bearing 59B. The third bearing 62B is arranged closer to the second rotating member 522 than the second bearing 59B. More specifically, the third bearing 62B is positioned on the side opposite to the second bearing 59B in the second driving device 42, and is located between the inner wall 4221 of the second case 422 and the second shaft member 512 that constitute the second driving device 42. provided between The third bearing 62B rotatably supports the second shaft member 512 around the rotation axis Rx2.

The third bearing 62B is a thrust bearing, more specifically a thrust rolling bearing, more specifically a thrust ball bearing. The third bearing 62B has a housing washer 62B1, a shaft washer 62B2 and a plurality of third balls 62B3.
Housing washer 62B1 is fixed to inner wall 4221 .
The shaft washer 62B2 is rotatable relative to the housing washer 62B1 about the central axis of the third bearing 62B. The outer peripheral edge of the second shaft member 512 is connected to the inner peripheral edge of the shaft washer 62B2.
The plurality of third balls 62B3 are provided along the circumferential direction around the rotation axis Rx2 between the housing washer 62B1 and the shaft washer 62B2.

A preload is applied to the first shaft member 511 by the second bearing 59A and the third bearing 62A provided in the first case 412 . As a result, displacement of the first shaft member 511 in the extending direction of the first shaft member 511 is suppressed, and vibration during rotation of the first shaft member 511 is suppressed.
Similarly, preload is applied to the first shaft member 511 by the second bearing 59B and the third bearing 62B provided inside the second case 422 . This suppresses the displacement of the second shaft member 512 in the extension direction of the second shaft member 512, and suppresses the vibration of the second shaft member 512 during rotation.

Note that the third bearings 62A and 62B are assumed to be thrust ball bearings. However, the present invention is not limited to this, and at least one of the third bearings 62A and 62B, the third bearing 62, may be a radial ball bearing. When the third bearing 62A is a radial ball bearing, the outer ring is fixed to the inner wall 4121 of the first case 412, the inner ring is connected to the outer peripheral surface of the first shaft member 511, and together with the second bearing 59A, the first shaft A preload may be applied to the member 511 . The same applies when the third bearing 62B is a radial ball bearing.

[Effect of the third embodiment]
The electronic device according to the present embodiment described above has the same effect as the electronic device 1 according to the first embodiment and the electronic device according to the second embodiment, and also has the following effects.
The compressor 3C includes a second bearing 59A and a third bearing 62A that apply preload to the first shaft member 511 in the extension direction of the first shaft member 511 . The first bearing 60A is a radial sliding bearing. The second bearing 59A is a radial rolling bearing. The third bearing 62A is a thrust rolling bearing. The compressor 3C also includes a second bearing 59B and a third bearing 62B that apply preload to the second shaft member 512 in the direction in which the second shaft member 512 extends. The first bearing 60B is a radial slide bearing. The second bearing 59B is a radial rolling bearing. The third bearing 62B is a thrust rolling bearing.
According to such a configuration, the first bearing 60A can support the radial load applied to the first rotating member 521, and the deformation of the first shaft member 511 can be suppressed. Further, since preload can be applied to the first shaft member 511 by the second bearing 59A and the third bearing 62A, displacement of the first shaft member 511 in the extension direction of the first shaft member 511 can be suppressed. The first bearing 60B, the second bearing 59B, and the third bearing 62B can similarly suppress deformation and deviation of the second shaft member 512 . Therefore, it is possible to reduce vibration and noise when driving the positive displacement machine 5C, and in turn, reduce vibration and noise when driving the compressor 3C, the cooling device, and the electronic equipment.

[Fourth embodiment]
Next, a fourth embodiment of the present disclosure will be described.
The electronic device according to this embodiment has the same configuration as the electronic device according to the third embodiment, but differs in the configuration of the third bearing. In the following description, the same or substantially the same parts as those already described are denoted by the same reference numerals, and the description thereof is omitted.

[Configuration of electronic device and cooling device]
FIG. 6 is a cross-sectional view showing a compressor 3D according to this embodiment.
The electronic device according to the present embodiment has the same configuration and functions as the electronic device 1 according to the first embodiment, except that the compressor 3D shown in FIG. 6 is provided instead of the compressor 3A according to the first embodiment. Prepare. That is, the cooling device included in the electronic device according to the present embodiment has the same configuration and functions as the cooling device 2 according to the first embodiment, except that the compressor 3D is provided instead of the compressor 3A.

[Configuration of Compressor]
Like the compressor 3A, the compressor 3D is a reciprocating compressor that compresses the gas-phase working fluid that flows in from the evaporator 23 via the fourth pipe 244 . The compressor 3D comprises a drive 4 and a positive displacement machine 5D.
The positive displacement machine 5D has the same configuration and functions as the positive displacement machine 5C according to the third embodiment, except that the third bearing 63 is provided instead of the third bearing 62 . That is, the positive displacement machine 5D includes a shaft member 51, a rotating member 52, a connecting member 53, a slide member 54, a frame 55, a first sealing member 56, a second sealing member 57, a first bearing 60, a second bearing 59 and a third bearing 63 .
Two first bearings 60 are provided in the positive displacement machine 5D, and each first bearing 60 is a radial slide bearing. Two second bearings 59 are provided in the positive displacement machine 5D, and each second bearing 59 is a radial rolling bearing.

[Configuration of the third bearing]
The third bearing 63 , along with the second bearing 59 , applies preload to the shaft member 51 in the extension direction of the shaft member 51 , suppresses displacement of the shaft member 51 in the extension direction of the shaft member 51 , Suppresses vibration during rotation. Two third bearings 63 are provided in the positive displacement machine 5C. For convenience of explanation, one of the two third bearings 63 is referred to as a third bearing 63A, and the other third bearing 63 is referred to as a third bearing 63B. The third bearings 63A and 63B are thrust bearings, more specifically thrust slide bearings.

The third bearing 63A applies preload to the first shaft member 511 in the extension direction of the first shaft member 511 together with the second bearing 59A. Like the third bearing 62A, the third bearing 63A is provided between the inner wall 4121 of the first case 412 and the first shaft member 511 at a position opposite to the second bearing 59A in the first driving device 41. be done. The third bearing 62A rotatably supports the first shaft member 511 around the rotation axis Rx1.
The third bearing 63A has a housing washer 63A1 and a shaft washer 63A2.
Housing washer 63A1 is fixed to inner wall 4121 of first case 412 .
The shaft washer 63A2 is rotatable relative to the housing washer 63A1 about the central axis of the third bearing 62A. The outer peripheral edge of the first shaft member 511 is connected to the inner peripheral edge of the shaft washer 63A2.

The third bearing 63B applies preload to the second shaft member 512 in the extending direction of the second shaft member 512 together with the second bearing 59B. Similarly to the third bearing 62B, the third bearing 63B is provided between the inner wall 4221 of the second case 422 and the second shaft member 512 at a position opposite to the second bearing 59A in the second driving device 42. be done. The third bearing 62B rotatably supports the second shaft member 512 around the rotation axis Rx2.
The third bearing 63B has a housing washer 63B1 and a shaft washer 63B2.
Housing washer 63B1 is fixed to inner wall 4221 .
The shaft washer 63B2 is rotatable relative to the housing washer 63B1 about the central axis of the third bearing 62B. The outer peripheral edge of the second shaft member 512 is connected to the inner peripheral edge of the shaft washer 63B2.

[Actions of the second bearing and the third bearing]
A preload is applied to the first shaft member 511 by the second bearing 59A and the third bearing 63A provided in the first case 412 . As a result, displacement of the first shaft member 511 in the extending direction of the first shaft member 511 is suppressed, and vibration during rotation of the first shaft member 511 is suppressed.
Similarly, preload is applied to the second shaft member 512 by the second bearing 59B and the third bearing 63B provided inside the second case 422 . This suppresses the displacement of the second shaft member 512 in the extension direction of the second shaft member 512, and suppresses the vibration of the second shaft member 512 during rotation.

[Effect of the fourth embodiment]
The electronic device according to the present embodiment described above has the same effects as the electronic device according to the third embodiment, and also has the following effects.
The compressor 3D includes a second bearing 59A and a third bearing 63A that apply preload to the first shaft member 511 in the direction in which the first shaft member 511 extends. The first bearing 60A is a radial slide bearing. The second bearing 59A is a radial rolling bearing. The third bearing 63A is a thrust sliding bearing. The compressor 3D also includes a second bearing 59B and a third bearing 63B that apply preload to the second shaft member 512 in the direction in which the second shaft member 512 extends. The first bearing 60B is a radial sliding bearing. The second bearing 59B is a radial rolling bearing. The third bearing 63B is a thrust slide bearing.
According to such a configuration, deformation of the first shaft member 511 can be suppressed by the first bearing 60A. Further, since preload can be applied to the first shaft member 511 by the second bearing 59A and the third bearing 63A, displacement of the first shaft member 511 in the extension direction of the first shaft member 511 can be suppressed. The first bearing 60B, the second bearing 59B, and the third bearing 62B can similarly suppress deformation and deviation of the second shaft member 512 . Therefore, it is possible to reduce vibration and noise when driving the positive displacement machine 5D, and in turn, reduce vibration and noise when driving the compressor 3D, the cooling device, and the electronic equipment.

[Modification of the fourth embodiment]
In the positive displacement machine 5D, the third bearing 63A is provided inside the first case 412 constituting the first driving device 41 on the opposite side to the second bearing 59A. However, the present invention is not limited to this, and the third bearing 63A may be provided in another portion.
For example, the third bearing 63A may be provided outside the first case 412 . In this case, for example, the third bearing 63A may have the housing washer 63A1 fixed to the inner wall of the frame 55 and the shaft washer 63A2 connected to the outer peripheral surface of the first shaft member 511 . Further, for example, the third bearing 63A may have a housing washer 63A1 fixed to the inner wall of the frame 55 and a shaft washer 63A2 connected to the first inner ring 60A2 of the first bearing 60A. The same applies to the third bearing 63B.

[Modification of Embodiment]
The present disclosure is not limited to the above-described embodiments, and includes modifications, improvements, and the like within a range that can achieve the purpose of the present disclosure.
In each of the above embodiments, the first shaft member 511, which is one of the shaft members 51, is arranged in the -X direction with respect to the slide member 54, rotates about the rotation axis Rx1 along the +X direction, and rotates around the rotation axis Rx1 along the +X direction. The second shaft member 512, which is 51, is arranged in the +X direction with respect to the slide member 54, and rotates about the rotation axis Rx2 along the +X direction. A first rotating member 521, which is one rotating member 52, is connected to the first shaft member 511 and rotates coaxially with the first shaft member 511, and a second rotating member 522, which is the other rotating member 52, is connected to the first shaft member 511. It is assumed that it is connected to the shaft member 512 and rotates coaxially with the second shaft member 512 . That is, the positive displacement machines 5A, 5B, 5C, and 5D are provided with shaft members 511 and 512 and rotary members 521 and 522. However, without being limited to this, the positive displacement machine of the present disclosure may include one shaft member and may include one rotating member. In this case, the compressor of the present disclosure may be configured with a single drive device.

In each of the above embodiments, the slide member 54 includes a first piston portion 542 provided at the +Y direction end of the rod 541, a second piston portion 543 provided at the −Y direction end of the rod 541, was prepared. However, the configuration is not limited to this, and the slide member 54 may be configured to include one piston portion. For example, if the slide member 54 does not include the second piston portion 543, the positive displacement machine does not need to include the second guide portion 554, the second pressure chamber S4 and the second working chamber S5.

In the above-described first embodiment, the positive displacement machine 5A includes the first bearing 58, which is a radial rolling bearing, and the second bearing 59 that applies preload to the shaft members 511 and 512 together with the first bearing 58. . In the above second embodiment, the positive displacement machine 5B is provided with the second bearing 61 that applies preload to each of the shaft members 511 and 512 in addition to the first bearing 60 that is a radial sliding bearing. In the above-described third embodiment, the positive displacement machine 5C includes the second bearing 59 and the third bearing 62 that preloads the shaft members 511 and 512 together with the second bearing 59 in addition to the first bearing 60. and In the fourth embodiment, in addition to the first bearing 60, the positive displacement machine 5D includes a second bearing 59 and a third bearing 63 that preloads the shaft members 511 and 512 together with the second bearing 59. bottom. However, the present disclosure is not limited to this, and the positive displacement machine of the present disclosure may include the first bearing and may not include the second bearing and the third bearing.

In each of the above embodiments, the second bearings 59A and 61A are arranged inside the first case 412 of the first driving device 41 and are connected to the inner wall 4121 of the first case 412 and the outer peripheral surface of the first shaft member 511. and However, not limited to this, the second bearings 59A, 61A may be provided outside the first case 412, the second outer rings 59A1, 61A1 are connected to the inner wall of the frame 55, and the second inner rings 59A2, 61A2 may be connected to the outer peripheral surface of the first shaft member 511 . The same applies to the second bearings 59B and 61B.

In the said 1st Embodiment, the 1st bearing 58 and the 2nd bearing 59 presupposed that it is a deep groove ball bearing. However, not limited to this, the first bearing 58 and the second bearing 59 may be rolling bearings other than deep groove ball bearings as long as they are radial rolling bearings.
Similarly, the second bearing 59 in the third and fourth embodiments may be a rolling bearing other than the deep groove ball bearing as long as it is a radial rolling bearing.

In the above-described second embodiment, the second bearings 61A and 61B are assumed to be double row angular bearings or cross roller bearings classified as radial ball bearings. However, not limited to this, the second bearings 61A and 61B may be other radial ball bearings. For example, at least one of the second bearings 61A and 61B may be a plurality of deep groove ball bearings arranged in parallel along the extending direction of the first shaft member 511 .
Further, it is assumed that the second bearing 61A is provided inside the first case 412 at the end opposite to the first rotating member 521 . However, the present invention is not limited to this, and the second bearing 61A may be provided in another portion. For example, the second bearing 61A may be provided inside the first case 412 at the end near the first rotating member 521 . Further, for example, the second bearing 61A may be provided outside the first case 412 . In this case, the second outer ring 61A1 may be fixed to the inner wall of the frame 55, and the second inner ring 61A2 may be connected to the outer peripheral surface of the first shaft member 511. The same applies to the second bearing 61B.

In the third embodiment, the third bearings 62A, 62B are assumed to be thrust ball bearings. However, the present invention is not limited to this, and at least one of the third bearings 62A and 62B may be another thrust rolling bearing. For example, the third bearing 62 may be a thrust roller bearing.
Further, it is assumed that the third bearing 62</b>A is provided inside the first case 412 at the end opposite to the first rotating member 521 . However, the present invention is not limited to this, and the third bearing 62A may be provided in another portion. For example, the third bearing 62A may be provided outside the first case 412 . In this case, the housing washer of the third bearing 62A may be fixed to the inner wall of the frame 55, and the shaft washer of the third bearing 62A may be connected to the outer peripheral surface of the first shaft member 511. The same applies to the third bearing 62B.

In each of the embodiments described above, the first rotating member 521 is provided with the first weight CW1, and the second rotating member 522 is provided with the second weight CW2. However, not limited to this, at least one of the rotating members 521 and 522 may not have a counterweight.

In the first embodiment, the first outer ring 58A1 of the first bearing 58A, which is a radial rolling bearing, is fixed to the inner wall 5511 of the frame 55, and the first inner ring 58A2 of the first bearing 58A is attached to the outer circumference of the first shaft member 511. assumed to be connected to the surface. In the second to fourth embodiments, the first outer ring 60A1 of the first bearing 60A, which is a radial sliding bearing, is fixed to the inner wall 5511 of the frame 55, and the first inner ring 60A2 of the first bearing 60A is the first shaft member. 511 is assumed to be connected to the outer peripheral surface. However, the invention is not limited to this, and the first outer rings 58A1 and 60A1 of the first bearings 58A and 60A may be fixed to non-moving parts other than the frame 55. For example, the first outer rings 58A1, 60A1 may be fixed to the first case 412. The same applies to the first bearings 58B and 60B.

In each of the embodiments described above, the positive displacement machines 5A, 5B, 5C, and 5D together with the driving device 4 constitute the compressors 3A, 3B, 3C, and 3D. However, the present disclosure is not limited to this, and may be applied to positive displacement machines used in internal combustion engines such as engines. That is, the positive displacement machine of the present disclosure is not limited to constructing a compressor.
In each of the embodiments described above, the compressors 3A, 3B, 3C, and 3D compress the working fluid that changes phase between the liquid phase and the gas phase. However, the gas compressed by the compressor of the present disclosure is not limited to working fluid as refrigerant. Also, the compressors 3A, 3B, 3C, and 3D are assumed to constitute the cooling device 2 . However, without being limited to this, the compressor of the present disclosure may constitute another device or may be used alone.

[Summary of this disclosure]
A summary of the present disclosure is added below.
A positive displacement machine according to a first aspect of the present disclosure includes a cylindrical guide portion, a shaft member that rotates about a rotation axis, a rotation member that is connected to the shaft member and rotates about the rotation axis, a connecting member that is connected to the rotating member and moves in a direction that intersects the rotating shaft by rotation of the rotating member; a shaft that extends along the intersecting direction; a slide member that is connected to the connecting member and slides in the cross direction; and a pressure chamber that is provided in the guide and whose volume is changed by sliding of the piston. and a first bearing, which is a radial bearing provided coaxially with the rotating shaft and rotatably supporting the shaft member, wherein the first bearing is provided in a connection region between the connecting member and the rotating member. On the other hand, it is arranged radially outside of the rotating shaft.

According to such a configuration, the first bearing, which is a radial bearing that rotatably supports the shaft member, is arranged radially outside the rotation axis of the shaft member with respect to the connection area between the coupling member and the rotation member. ing. According to this, even when the piston portion moves in the direction of decreasing the volume of the pressure chamber and the pressure in the direction of increasing the volume of the pressure chamber is applied to the shaft member via the slide member, the shaft member is deformed. This can be suppressed by the first bearing. Therefore, since it is possible to suppress the shift of the center of gravity of the shaft member, it is possible to suppress the vibration when the shaft member rotates about the rotation axis. In addition, this can reduce noise during driving of the positive displacement machine.

In the first aspect, the rotating member has a counterweight provided on a portion of the sliding member opposite to the sliding direction, and the first bearing is mounted on the counterweight in the radial direction of the rotating member. You may sandwich the center of gravity position.
According to such a configuration, it is possible to prevent the position of the center of gravity of the counterweight from shifting due to the pressure described above. According to this, it is possible to suppress the vibration caused by the rotation of the rotating member, and it is possible to suppress the deformation of the shaft member connected to the rotating member, so it is possible to suppress the vibration when the shaft member rotates. Therefore, it is possible to suppress vibration when driving the positive displacement machine, and reduce noise when driving the positive displacement machine.

In the first aspect, a housing is provided to accommodate the rotating member, the connecting member, and the sliding member, and the first bearing includes a first outer ring connected to an inner wall of the housing and an outer ring of the rotating member. and a first inner ring connected to the peripheral edge and rotatable with respect to the first outer ring.
With such a configuration, the first outer ring of the first bearing is connected to the inner wall of the housing, so the first bearing can be fixed to the inner wall of the housing. Since the first inner ring of the first bearing is connected to the outer peripheral edge of the rotating member, deformation of the shaft member connected to the rotating member can be effectively suppressed. Therefore, it is possible to suppress vibration when driving the positive displacement machine, and reduce noise when driving the positive displacement machine.

A compressor according to a second aspect of the present disclosure includes the positive displacement machine according to the first aspect and a driving device that rotates the shaft member, and the piston section compresses gas that has flowed into the pressure chamber. do.
According to such a configuration, it is possible to obtain the same effects as those of the positive displacement machine according to the first aspect.

The second aspect may include a second bearing that applies a preload to the shaft member in the extension direction of the shaft member.
Here, the connecting member is swung about an axis along a direction intersecting the rotation axis of the shaft member, that is, along the sliding direction of the slide member, as the rotating member rotates. Since the connecting member is connected to the rotating member and the rotating member is connected to the shaft member, when the connecting member is swung, the rotating member and the shaft member are displaced along the extending direction of the shaft member. there is a possibility. If the rotating member and the shaft member are misaligned, the vibration during rotation of the rotating member and the shaft member increases.
On the other hand, according to the above configuration, since the second bearing applies preload to the shaft member in the extension direction of the shaft member, it is possible to suppress the displacement of the shaft member in the extension direction of the shaft member. Therefore, it is possible to suppress the generation of vibration accompanying the rotation of the shaft member, and it is possible to suppress deformation of the shaft member. Therefore, it is possible to suppress vibration when driving the positive displacement machine, and reduce noise when driving the positive displacement machine.

In the second aspect, the first bearing and the second bearing may be radial ball bearings, and the second bearing may apply preload to the shaft member together with the first bearing.
According to such a configuration, the first bearing and the second bearing can be configured relatively simply, and preload can be applied to the shaft member in the extending direction of the shaft member. Therefore, it is possible to configure a compressor that exhibits the above effects with a simple configuration.

In the second aspect, the first bearing may be a radial sliding bearing, and the second bearing may be one of a double row angular bearing and a cross roller bearing.
According to such a configuration, deformation of the shaft member due to the pressure can be suppressed by the first bearing. Further, the preload can be applied to the shaft member by the second bearing, and displacement of the shaft member can be suppressed. Therefore, it is possible to suppress vibration when driving the positive displacement machine, and reduce noise when driving the positive displacement machine.

In the second aspect, the second bearing and the third bearing are provided for applying preload to the shaft member in the extension direction of the shaft member, the first bearing is a radial sliding bearing, and the second bearing is: It may be a radial rolling bearing and the third bearing may be a thrust rolling bearing.
According to such a configuration, the first bearing can support the load in the radial direction on the rotating member, and can suppress deformation of the shaft member. Further, since preload can be applied to the shaft member by the second bearing and the third bearing, displacement of the shaft member in the extending direction of the shaft member can be suppressed. Therefore, it is possible to reduce vibration and noise during driving of the positive displacement machine.

In the second aspect, a second bearing and a third bearing are provided for applying preload to the shaft member in the extension direction of the shaft member, the first bearing is a radial sliding bearing, and the second bearing is: It may be a radial rolling bearing and the third bearing may be a thrust slide bearing.
According to such a configuration, the first bearing can support the radial load on the rotating member, and the second bearing and the third bearing can apply preload to the shaft member. According to this, it is possible to suppress deformation of the shaft member, and it is also possible to suppress deviation of the shaft member in the extending direction of the shaft member. Therefore, it is possible to reduce vibration and noise during driving of the positive displacement machine.

In the second aspect, the drive device includes a rotating portion that rotates the shaft member and a case that accommodates the rotating portion, and the second bearing includes a second outer ring connected to the case. and a second inner ring connected to the shaft member and rotatable with respect to the second outer ring.
According to such a configuration, the second bearing can be fixed because the second outer ring of the second bearing is connected to the case of the driving device. A second inner ring rotatable with respect to the second outer ring in the second bearing is connected to the shaft member. According to this, it is possible to suppress the displacement of the shaft member in the extending direction of the shaft member, and it is possible to suppress the deformation of the shaft member. Therefore, it is possible to reduce vibration and noise during driving of the positive displacement machine.

A cooling device according to a third aspect of the present disclosure includes a compressor according to the second aspect, which compresses a gaseous working fluid, and a liquid phase working fluid compressed by the compressor. a condensing section for condensing into a fluid; an expansion section for reducing the pressure of the liquid-phase working fluid condensed by the condensing section to change the state of the working fluid to a state in which the liquid phase and the gas phase are mixed; and cooling. The working fluid that is heat transferably connected to an object and that flows through the expansion portion is changed into the gas phase working fluid by the heat transferred from the cooling object, and the changed gas phase working fluid is converted to the gas phase working fluid. an evaporator that discharges to the compressor.
According to such a configuration, the same effects as those of the compressor according to the second aspect can be obtained.

An electronic device according to a fourth aspect of the present disclosure includes the cooling device according to the third aspect.
With such a configuration, the same effects as those of the cooling device according to the third aspect can be obtained.

DESCRIPTION OF SYMBOLS 1... Electronic equipment, 2... Cooling device, 3A, 3B, 3C, 3D... Compressor, 4... Drive device, 41... First drive device, 42... Second drive device, 5A, 5B, 5C, 5D... Capacity type Machine 51 Shaft member 511 First shaft member 512 Second shaft member 52 Rotating member 521 First rotating member 522 Second rotating member 53 Connecting member 531, 532 End Part, 54... Slide member, 541... Rod (shaft part), 542... First piston part (piston part), 543... Second piston part (piston part), 55... Frame (housing), 551... Receiving part, 552... First guide part (guide part), 553... First partition part, 554... Second guide part (guide part), 555... Second partition part, 56, 56A, 56B... First sealing member, 57, 57A, 57B... second sealing member 58, 58A, 58B... first bearing 58A1... first outer ring 58A2... first inner ring 58A3... first ball 59, 59A, 59B... second bearing 59A1... Second outer ring 59A2 Second inner ring 59A3 Second ball 60, 60A, 60B First bearing 60A1, 60B1 First outer ring 60A2, 60B2 First inner ring 61, 61A, 61B Second Bearings 61A1, 61B1... Second outer ring 61A2, 61B2... Second inner ring 61A3, 61B3... Second ball 62, 62A, 62B... Third bearing 62A1, 62B1... Housing washer 62A2, 62B2... Shaft raceway Disk 62A3, 62B3 Third ball 63, 63A, 63B Third bearing 63A1, 63B1 Housing washer 63A2, 63B2 Shaft washer CW1 First weight (counterweight) CW2 Second Weight (counterweight).

Claims (12)

a tubular guide;
a shaft member that rotates about an axis of rotation;
a rotating member connected to the shaft member and rotating about the rotating shaft;
a connecting member that is connected to the rotating member and moves in a direction that intersects the rotating shaft by rotation of the rotating member;
A shaft portion along the cross direction, and a piston portion provided at an end portion of the shaft portion in the cross direction and arranged in the guide portion, connected to the connecting member, and slidable in the cross direction. a slide member for
a pressure chamber provided in the guide portion, the volume of which changes according to the sliding of the piston portion;
a first bearing that is a radial bearing that is provided coaxially with the rotating shaft and rotatably supports the shaft member;
A positive displacement machine, wherein the first bearing is arranged radially outside of the rotating shaft with respect to a connection area between the connecting member and the rotating member. A positive displacement machine according to claim 1, wherein
The rotating member has a counterweight provided at a portion of the sliding member opposite to the sliding direction,
A positive displacement machine, wherein the first bearing sandwiches the center of gravity of the counterweight in the radial direction of the rotating member. A positive displacement machine according to claim 1 or claim 2,
A housing that accommodates the rotating member, the connecting member, and the sliding member;
The first bearing is
a first outer ring connected to the inner wall of the housing;
a first inner ring connected to an outer peripheral edge of the rotating member and rotatable with respect to the first outer ring. A positive displacement machine according to any one of claims 1 to 3;
a driving device that rotates the shaft member,
The compressor, wherein the piston section compresses the gas that has flowed into the pressure chamber. A compressor according to claim 4,
A compressor comprising a second bearing that applies a preload to the shaft member in an extending direction of the shaft member. A compressor according to claim 5,
The first bearing and the second bearing are radial ball bearings,
A compressor, wherein the second bearing applies preload to the shaft member together with the first bearing. A compressor according to claim 5,
The first bearing is a radial sliding bearing,
A compressor, wherein the second bearing is one of a double row angular bearing and a cross roller bearing. A compressor according to claim 4,
a second bearing and a third bearing that apply preload to the shaft member in the direction in which the shaft member extends;
The first bearing is a radial sliding bearing,
the second bearing is a radial rolling bearing,
A compressor, wherein the third bearing is a thrust rolling bearing. A compressor according to claim 4,
a second bearing and a third bearing that apply preload to the shaft member in the direction in which the shaft member extends;
The first bearing is a radial sliding bearing,
the second bearing is a radial rolling bearing,
A compressor, wherein the third bearing is a thrust slide bearing. In the compressor according to any one of claims 5 to 9,
The driving device
a rotating portion that rotates the shaft member;
A case that accommodates the rotating part inside,
the second bearing,
a second outer ring connected to the case;
a second inner ring connected to the shaft member and rotatable with respect to the second outer ring. a compressor according to any one of claims 4 to 10, for compressing a working fluid in gas phase;
a condensing section for condensing the gas-phase working fluid compressed by the compressor into the liquid-phase working fluid;
an expansion section that reduces the pressure of the liquid-phase working fluid condensed by the condensation section to change the state of the working fluid into a state in which a liquid phase and a gas phase are mixed;
The working fluid that is heat-transferably connected to an object to be cooled and that flows through the expansion portion is changed into the working fluid in a gaseous phase by the heat transferred from the object to be cooled, and the changed gaseous phase working fluid is converted into the working fluid. and an evaporator that discharges to the compressor. An electronic device comprising the cooling device according to claim 11 .

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