KR100297177B1 - Fluid apparatus - Google Patents

Abstract

The present invention relates to, for example, a helical blade type fluid machine suitable for compressing a refrigerant gas of a refrigeration cycle, wherein a rotational power is generated by the power mechanism unit 7 and the power mechanism unit 7 in the sealed case 1. A compression mechanism 9 is provided, guides suction gas into the sealed case 1, discharges gas compressed by the compression mechanism 9 out of the sealed case 1, and compresses the compression mechanism 9 ) To the upper portion of the electric mechanism (7), the inside of the sealed case (1) to a low-pressure atmosphere in which the suction gas is transferred, to reduce the weight of the sealed case and to ensure smooth lubrication of the compressor mechanism. It features.

Description

Fluid Machinery {FLUID APPARATUS}

The present invention relates to a helical blade type fluid machine suitable for compressing, for example, refrigerant gas of a refrigeration cycle.

Background Art Conventionally, a helical blade fluid machine has a roller piston arranged eccentrically in a cylinder, and a blade is wound and mounted in a spiral groove formed on the outer circumferential surface of the roller piston to form a compression chamber in the cylinder. In addition, the refrigerant introduced into the compression chamber from the suction end of the cylinder is sequentially compressed by the relative movement between the cylinder and the roller piston to the discharge side of the cylinder, and is compressed so that the inside of the sealed case is filled with compressed gas and then discharged to the outside. have.

The helical blade fluid machine firstly directs the suction gas to the compression mechanism, compresses it, discharges it into the sealed case, and discharges it out of the discharge tube installed in the case, so that the inside of the sealed case becomes a high-pressure atmosphere.

Second, since the compression part extends in the axial direction, the bearing distance becomes long.

Third, a portion of the compression mechanism portion is directed below the liquid level of the lubricating oil.

For this reason, the lubricating oil in the sealed case, which is a high-pressure atmosphere, dissolves a lot of refrigerant and increases the oil temperature, so that the viscosity tends to be lowered. Easier

In addition, when HFC high pressure refrigerant, for example, R410A is used as the refrigerant, since the saturation pressure is about 1.5 times higher than that of conventional R22, it is necessary to sufficiently secure the internal pressure of the sealed case at high pressure. For this reason, the thickness of the sealed case must be increased, which increases the weight and is undesirable in terms of cost.

In addition, when the roller of the compression mechanism portion below the liquid level rotates, lubricating oil is agitated, which causes a problem of unstable operation such as instability of oil supply, torque fluctuation or increase in pressure.

Then, an object of this invention is to provide the fluid machine which aimed at eliminating the said problem.

1 is a schematic cross-sectional view of a fluid machine according to the present invention;

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a schematic cross-sectional view similar to FIG. 1 in which an inlet is installed in a first support frame;

FIG. 4 is a schematic cross-sectional view similar to FIG. 1 installed at a position where the suction port and the suction pipe are opposed to each other;

FIG. 5 is a schematic cross-sectional view similar to FIG. 1 in which the shaft is freely rotated in the first support frame and the third support frame, and the second support frame is omitted; FIG.

6 is a schematic cross-sectional view similar to FIG. 1 in which the compression direction of the compression mechanism portion is compressed from the upper side to the lower side.

* Explanation of symbols for the main parts of the drawings

1: airtight case 7: power unit

9: compressor section

In order to achieve the above object, the present invention provides a fluid machine in which a compression mechanism portion consisting of a cylinder, a roller, and a blade and an electric mechanism portion for driving the compression mechanism portion are arranged in a sealed case,

The suction gas is guided into the sealed case, the gas compressed in the compression mechanism portion is discharged out of the sealed case, and the compression mechanism portion is arranged above the electric mechanism portion.

In a preferred embodiment, the compression direction of the compression chamber of the compression mechanism is sucked in from the lower side and compressed upward.

Alternatively, suction gas is sucked into the compression chamber from the outer circumferential surface of the cylinder.

Alternatively, suction gas is sucked into the compression chamber from the lower part of the roller.

According to such a fluid machine, the suction gas is separated from the lubricating oil and efficiently sent to the compression chamber. In addition, since the lubricating oil becomes a low-pressure atmosphere filled with the suction gas in the sealed case, the lubricating oil is not strongly influenced by pressure and temperature, and sufficient viscosity is secured. As a result, smooth lubrication is possible for bearings with long distances. In addition, the thickness of the sealed case can be reduced, and the weight can be reduced. In addition, the roller does not stir the lubricating oil, so that a stable operating state of the compression mechanism can be obtained.

In addition, in this invention, when the lubricated lubricating oil falls down, the shaft which supports the shaft of a compression mechanism part freely rotates the lubricating oil which lubricated the bearing of a compression mechanism part so that it may not be shaken out by the rotor of the rotating electric-mechanical part when it falls. It falls into the stator area | region through the flow path installed in the 1st support frame.

Alternatively, the first volume chamber communicating with the final compression chamber is formed in the cylinder so as to separate the discharge gas and the lubricating oil to reduce the noise and passage resistance, and the second volume chamber communicating with the first volume chamber is installed above the cylinder. do.

In this case, it is preferable to enlarge the cross section of a 1st volume chamber toward a 2nd volume chamber.

In addition, a check valve for preventing flow from the second volume chamber is provided in a connection port connecting the first volume chamber and the second volume chamber to prevent the reverse flow of the discharge gas.

Alternatively, an annular seal means for sealing the high pressure region and the low pressure region is provided on either the second volume chamber side or the roller end surface side so that a stable seal state can be obtained over a long period, and the center of the annular seal means and the shaft of the shaft Match the center

In this case, it is preferable to form a bearing on the lower wall of the second volume chamber to support the shaft upper end freely to rotate.

Or, a bearing formed between the upper and lower oil supply passages and the upper end of the shaft and the bearings provided on the shaft with the bearing surface of the second support frame to support the upper end of the shaft so as to ensure lubrication at the top. Lubricate through space.

In this case, it is preferable that the oil supply passage provided in the shaft is shifted from the shaft center of the shaft so that the lubricant oil rises smoothly under the action of the centrifugal force.

Alternatively, the oil supply passage provided on the shaft communicates with the bearing lower portion of the first support frame and the bearing upper portion of the roller so that the sliding part can obtain stable oil supply.

Alternatively, in order to prevent the turning of the electric mechanism part, the shaft serves as the shaft of the electric mechanism part and at the same time, the shaft shaft end passing through the electric mechanism part is freely supported by the third support frame.

Or in order to ensure the centrifugal balance of a compression mechanism part, the 1st balancer and the 2nd balancer arrange | positioned in a roller are respectively provided in the shaft of a compression mechanism part.

Alternatively, in order to prevent heating of the suction gas and at the same time to prevent the lubricating oil from being sucked in, the suction gas is sucked from the upper side in the compression direction of the compression chamber of the compression mechanism and compressed downward.

Alternatively, a sealing means for sealing the high pressure portion and the low pressure portion is provided on the discharge side of the roller forming the compressor mechanism so as to ensure a stable seal state in the discharge side region.

Alternatively, the volume chamber is formed in the outer peripheral portion of the cylinder constituting the compression mechanism to communicate with each other of the final compression chamber so as to obtain a noise reduction effect.

Alternatively, the terminal mounting portion of the electric mechanism section is provided in a sealed case having a space region facing each other with the cylinder in the region of the compression mechanism so as to enable the shortest distance.

In this case, the terminal mounting portion is preferably arranged in the cutout of the first support frame for supporting the shaft of the compression mechanism.

Alternatively, the flow path for dropping the lubricated lubricating oil into the stator area by installing an Oldham ring on the first support frame to give the roller movement to the roller of the compressor section so that the Oldham ring, which is an anti-rotation mechanism, can always be lubricated. It is installed between the area and the roller lower surface.

Or a fluid machine in which a compressor mechanism portion consisting of a cylinder, a roller, and a blade and a power mechanism driving the compressor mechanism are arranged in a sealed case so as to prevent rotation of the power mechanism in a simple manner.

The suction gas is led into the sealed case, and the gas compressed in the compression mechanism portion is discharged out of the sealed case, while the compression mechanism portion is disposed above the power mechanism portion, and the shaft passing through the compression mechanism portion and the power mechanism portion is interposed between the power mechanism portion. The support is freely rotated by two support frames.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings of FIGS. 1 and 2.

In FIG. 1, "1" shows the sealed case of the hermetic fluid machine 3 used for the refrigerating cycle. A suction pipe 5 of a refrigerating cycle is provided on the outer circumferential surface of the sealed case 1, and an electric mechanism 7 as a driving means and a compression mechanism 9 as a compression means are disposed inside the compression mechanism 9, respectively. ) Has a structure arranged above the power transmission mechanism (7).

The electric mechanism part 7 consists of the stator 11 fixed to the inner wall surface of the sealed case 1, and the rotor 15 mounted to the shaft 13, and the stator 11 through the terminal installation part 17 mentioned later. Is energized, rotational power is applied to the shaft 13 via the rotor 15.

The shaft 13 has an up and down long shape that doubles as the shaft of the compression mechanism 9, is fixed to the inner wall surface of the case 1, and the intermediate portion of the shaft 13 is rotated by the bearing portion 19a. The lower end portions of the second support frame 21 and the shaft 13 freely rotatably supported by the bearing 21a on the bearing portion 23a are supported by the bearing 21a. It has a structure supported by three points by the 3rd support frame 23 which rotation supports freely. However, since the gas load applied to the shaft 13 through the eccentric shaft part 31 can be supported by both the first support frame 19 and the second support frame 21 in the both sides, in the sense of supporting the gas load, It is not necessary to arrange the bearings.

The compression mechanism 9 has a cylindrical roller 27 in the cylinder 25 in which the upper and lower ends are fixedly supported by the first support frame 19 and the second support frame 21. It is arranged toward the direction. The bearing portion 29 of the roller 27 is fitted to the eccentric shaft portion 31 of the shaft 13, and the outer circumference of the roller 27 is partially circumferentially formed by the Oldham ring 33 described later. It is given a turning motion that does not follow the rotation while being in line contact with.

In order to balance the centrifugal force of the eccentric shaft portion 31 of the shaft 13 inside the roller 27, a pair of upper and lower balancers 35 fixed to the shaft 13 with the eccentric shaft portion 31 interposed therebetween. And the second balancer 37 are arranged, respectively. The second balancer 37 may be disposed on the upper end surface of the rotor 15. In this case, the thickness of the balancer can be reduced, so that the loss of the windshield can be reduced. The outer circumferential surface of the roller 27 is provided with a spiral groove 39, the pitch of the spiral groove 39 has the largest pitch on the suction end side (the lower side of the drawing), and the pitch toward the discharge end side (the upper side of the drawing). Is set to decrease in order.

The spiral blade 41 is freely fitted in and out of the spiral groove 39 using elastic force and gas pressure. As a result, each compression chamber 43 is formed and the volume of the compression chamber 43 on the suction end side is the largest. Hereinafter, the volume of each compression chamber 43 is set to become small in turn toward the upper side which becomes the discharge end side, and guides suction gas from the compression direction of the compression chamber 43, and the lower suction port 45 provided in the cylinder 25. It's supposed to compress upwards.

The suction pipe 5 is provided between the stator 11 and the first support frame 19. Thereby, the return liquid coolant cools the power mechanism unit 7 and effectively separates the liquid. To prevent liquid compression.

The relation between the suction port 45 and the suction pipe 5 is that the suction pipe 5 is installed at the bottom of the first support frame 19 away from the suction port 45, and the return liquid refrigerant is directly sent to the suction port 45. This eliminates overload and prevents overload operation. On the other hand, the suction gas can be directly sucked into the compression chamber 43, thereby preventing the heating of the suction gas and achieving high efficiency.

The final compression chamber 43 on the discharge side is installed on the second support frame 21 in contact with the upper end surface of the roller 27 by the roller-shaped seal member 47 which is elastically supported. The seal with the space on the inner circumferential side of 27 is secured and communicated with the first volume chamber 49.

In this embodiment, as a structure of the sealing member 47, an annular groove is formed in the 2nd support frame 21, an elastic body is arrange | positioned at this annular bottom, and between an elastic body and the upper end surface of the roller 27 is formed. A ring body may be inserted into the seal to secure the seal.

The seal member 47 coincides with the shaft center of the shaft 13. As a result, the force of the thrust force applied to the roller 27 always coincides with the axial center position, whereby the thrust load can be stably supported and the sliding loss is lowered. In addition, the sealing member 47 may be provided on the upper edge side of the roller 27 in contact with the second supporting frame 21.

The first volume chamber 49 communicates with the second volume chamber 53 having a large volume through the connecting port 51, and the second volume chamber 53 extends out of the sealed case 1. Communicating with

If the end surface of the first volume chamber 49 is tapered and enlarged toward the connection port 51, the fluid passage loss can be reduced.

A check valve 57 is provided at the outlet of the connection port 51 so that the discharge gas in the second volume chamber 53 is prevented from returning back into the first volume chamber 49 when the compression operation is stopped. It is.

The second volume chamber 53 has a muffler function and an oil separator function to reduce noise, and the lower wall of the second volume chamber 53 is formed by the second support frame 21 and the upper wall and the second support frame ( 21 are formed by the discharge cover 59 fixed to 21, respectively. In this case, it is possible to smoothly return the separated lubricant to the lower part of the sealed case 1 by installing the lubricant induction furnace 61 or the capillary tube communicating with the outside as shown by the virtual line in the second volume chamber 53. The lubricant in the case 1 can be secured.

Oldham ring 33 is formed in a ring shape, and the lower body engaging recess of the ring body 33a and the roller 27 disposed to face a part of the flow path 63 installed in the first support frame 19 ( 64) and the engagement convex part 33b which engages with each other, and the lubrication state is ensured by the lubricating oil which flows into the flow path 63. As shown in FIG.

The discharge end 63a of the flow path 63 installed in the first support frame 19 is located above the region of the stator 11 of the electric mechanism part 7 and does not fall directly on the rotor 15 where the lubricating oil rotates. It is supposed to be.

On the other hand, the terminal mounting portion 17 for supplying current to the stator 11 is disposed on the outer peripheral surface of the sealed case 1 to be disposed in the cut portion 65 of the first support frame 19 as shown in FIG. Attached. This makes it possible to reduce the overall height of the sealed case 1 low.

The shaft 13 has a pump 69 for sending lubricating oil at the bottom of the sealed case 1 to the oil supply passage 67 installed to penetrate up and down, and the oil supply passage 67 has a high head efficiency due to centrifugal force. The bearing portion 19a of the first support frame 19 and the bearing portion 21a of the second support frame 21 and the bearing portion 29 of the roller 27 are respectively disposed at positions displaced from the shaft center so as to increase. Communicating.

In this case, although the bearing part 21a of the 2nd support frame 21 communicates through the bearing space 71 of the upper end part of a shaft, you may make it communicate through a channel | path. In this structure, since the lubricating oil in the lower part of the sealed case 1 can be sucked up by the pump 69, and it can supply oil directly to the bearing space 71 of the bearing part 21a, high reliability can be ensured.

Further, a communication hole 27a penetrating up and down is provided near the eccentric shaft portion 31 of the roller 27. Therefore, the oil lubricating the bearing portion 21a falls downward through the communication hole 27a. In addition, the lubricating oil is formed at the upper portion of the eccentric shaft portion 31 as the position of the oil supply hole, and the lubricant oil flows from the top to the bottom, and is formed at the lower portion of the bearing portion 19a of the first support frame 19 to the lubricant oil from below. When flowing, the lubricating oil lubricates the lower end surface of the roller 27 or the engaging convex portion 33b, which is the sliding portion of the Oldham ring 33, and then is not wound up to the rotor through the flow path 63, and the sealed case. Return to the bottom of (1). Therefore, the lubricating oil in the sealed case 1 can repeat the cycle of lubrication, lubrication, and return, and can ensure high reliability. 3 shows an embodiment in which the suction port 45 is installed in the first support frame 19.

That is, since the suction port 45 is disposed under the compression mechanism 9, the heating of the suction gas is eliminated, and the compression efficiency is improved.

In addition, in the embodiment in which the suction pipe 5 is provided at a position facing the suction port 45 as shown in FIG. 4, a guide plate 73 is provided in the suction pipe 5 to guide suction gas downward. The liquid refrigerant may be used as the means for separating the suction gas from the suction gas with respect to the guide plate 73.

In addition, as shown in the imaginary line, the incision wall 75 is provided in the cylinder 25 which becomes the lower part of the inlet 45, and the intake pipe 5 which is not shown so that it may oppose this incision wall 75 is provided. The omission of the guide plate 73 is aimed at.

When the incision wall 75 is inclined in the same manner as the guide plate 73 to widen the lower side, the liquid refrigerant tends to fall downward, thereby securing the effect of gas-liquid separation. FIG. 5 shows an embodiment in which the rotation 3 is freely supported by the two-point support.

That is, the first support frame 19 and the third support frame 23 are rotatably supported by the shaft 13 penetrating the compressor mechanism 9 and the power transmission mechanism 7, so that the second support on the upper end side is supported. The bearing is omitted in the frame 21.

The first balancer 77 and the second balancer 79 are fixed to the shaft 13 with the eccentric shaft portion 31 interposed therebetween. The first balancer 77 at the upper end of the shaft 13 has a large free space. Therefore, it can select into arbitrary shapes with small windshield loss.

In addition, since the other components are the same as in FIG.

Therefore, according to this embodiment, the gas load generated in the compression chamber 43 is supported by the eccentric shaft portion 31 of the shaft 13 in addition to the effect of FIG. 1, and the shaft 13 is supported by the first support frame 19. And the third support frame 23 and the third support frame 23 and the helical blade compressor has a long compression, such as the shaft 13 is long because the first support frame 19 and the third support frame 23 and Since the distance can be reduced, the load of each of the first and third support frames 19 and 23 can be reduced.

This means that the load applied to the eccentric shaft portion 31 is "F", and the loads supported by the first and third support frames 19 and 23 are "F1", "F2", and the eccentric shaft portion 31 and the first support, respectively. When the distance to the frame 19 and the distance to the third support frame 23 are "L1" and "L2", it is as follows.

F1 / L1 = F2 / L2

F + F2 = F1

This is because the left side in Equation 1 is constant, so if L2 is large, F2 is small, and if E2 is small in Equation 2, F1 is small. In addition, since the load can be supported by the first and third support frames 19 and 23 in this manner, the second support frame 21 can be omitted, and the assembly can be performed without requiring a high assembly technique. .

FIG. 6 shows an embodiment in which the suction gas is sucked in the compression direction of the compression mechanism 9 from the upper side and compressed toward the lower side.

That is, the compression mechanism (9) has a cylindrical roller (87) of the cylinder (85) inside the cylinder (85), the upper and lower ends of which are supported by the first support frame (81) and the second support frame (83). It is arranged along the axial direction. The bearing portion 89 of the roller 87 is inserted into the eccentric shaft portion 31 of the shaft 13, and the outer circumference of the roller 87 is partially in line contact with the inner circumferential surface of the cylinder 85 by the Oldham ring 33. It is given a turning movement that does not follow the rotation.

In order to balance the centrifugal force of the eccentric shaft portion 31 of the shaft 13, the upper and lower pairs of first balancers 91 fixed to the shaft 13 are disposed inside the roller 87. ) And a second balancer 92 are disposed respectively. The outer peripheral surface of the roller 87 is provided with a helical groove 93. The helical groove 93 has the largest pitch on the suction end side (upper side of the drawing), and pitches toward the discharge end side (lower side of the drawing). Is set to decrease in order.

In the spiral groove 93, the spiral blade 95 is freely fitted in and out using elastic force and gas pressure. As a result, each compression chamber 7 is formed and the volume of the compression chamber 97 on the suction end side is the largest. Hereinafter, the volume of each compression chamber 97 is set to become small in turn toward the discharge end side, and the suction direction is guide | induced from the upper suction port 99 provided in the cylinder 85 to guide the compression direction of the compression chamber 97, and It is intended to compress toward.

The final final compression chamber 97 at the discharge side is secured by a ring-shaped seal member 101 provided between the roller 87 and the cylinder 85 and at the same time communicates with the first volume chamber 103. have.

The first volume chamber 103 communicates with the second volume chamber 105 having a large volume, and the second volume chamber 105 communicates with the discharge pipe 107 extending out of the sealed case 1.

The second volume chamber 105 has a muffler function and an oil separator function to reduce noise.

In this case, as shown by the dotted line in the second volume chamber 105, a lubricant oil induction path 109 or a pipe having a narrow diameter is installed to smoothly return the separated lubricant oil to the lower part of the sealed case 1. do.

In addition, since the other components are the same as in Fig. 1, the same reference numerals will be omitted.

Therefore, according to this embodiment shown in FIG. 6, the suction gas sent from the suction pipe 5 is led to the compression chamber 97 from the upper suction port 99 and compressed downward. At this time, since the suction port 99 and the suction pipe 5 are separated from each other, the return liquid refrigerant from the suction pipe 5 is not sucked directly into the suction port 9, and overload operation can be prevented. In addition, since the suction port 99 is disposed above the compression mechanism 9, the heating of the suction gas is eliminated, and the volumetric efficiency is improved.

In addition, in the case of the helical blade type compressor, the position of the gas load in the axial direction is the discharge side of which the pitch of the blade 41 is narrower than that of the center portion of the roller 87, so that the gas load generating position and the drive mechanism 7 for driving are driven. Since it becomes possible to reduce the load such as the bending force of the shaft 13, the bearing load can be reduced, and the reliability improvement and the loss can be reduced.

On the other hand, the discharge gas compressed in the compression chamber 97 is discharged out through the discharge pipe 107 through the first volume chamber 103 and the second volume chamber 104. Noise reduction is achieved when the discharge gas passes through the first and second volume chambers 103 and 107.

Further, the first and second support frames 81 and 83 and the bearing portions 81a and 83a are lubricated by the oil supply passage 67, so that a stable rotation state can be obtained over a long period of time.

As described above, the present invention provides the following effects.

(1) The lubricating oil is not strongly influenced by high temperature and high pressure, and smooth lubrication can be obtained for the sliding part of the compression mechanism.

(2) It becomes possible to make sealing case thin thickness, and weight reduction is aimed at.

(3) The roller does not stir the lubricating oil, and a stable operating state of the compression mechanism can be obtained.

(4) The suction gas and the liquid refrigerant are separated, the suction of the liquid refrigerant is eliminated, and the overload operation is prevented, while the heating of the suction gas is prevented to ensure an efficient compressed state.

Claims (23)

In a fluid machine in which a compression mechanism portion consisting of a cylinder, a roller, and a blade and an electric mechanism portion for driving the compression mechanism portion are arranged in a sealed case, A cylindrical roller having a spiral groove formed therein is formed with a spiral groove that guides the suction gas into the sealed case through a suction port disposed at the lower part of the compression mechanism, and has a pitch smaller from the suction end side to the discharge end side in a cylinder supported at both ends. The compressed gas is discharged out of the sealed case by a spiral mechanism in which a spiral blade is freely inserted into the roller, and the compressed compressor portion is composed of a stator fixed to the inner wall of the sealed case and a rotor mounted on a shaft that serves as a shaft of the compressor sphere. A fluid machine arranged above the power mechanism. The method of claim 1, A fluid machine, characterized in that the suction direction of the compression chamber of the compression mechanism unit is sucked in from the bottom and compressed upward. The method of claim 2, A fluid machine, characterized in that the suction gas is sucked into the compression chamber from the outer peripheral surface of the cylinder. The method of claim 2, A fluid machine characterized in that the suction gas is sucked into the compression chamber from the lower portion of the roller. The method of claim 1, A lubricating oil lubricating a bearing of a compression mechanism part is dropped into the stator area through a flow path provided in a first support frame in which the shaft of the compression mechanism part is rotatably supported. The method of claim 1, And a first volume chamber in communication with the final compression chamber is formed in the cylinder, and a second volume chamber in communication with the first volume chamber is provided above the cylinder. The method of claim 6, A cross section of the first volume chamber is enlarged toward the second volume chamber. The method of claim 6, And a check valve for preventing flow from the second volume chamber in a connection port connecting the first volume chamber and the second volume chamber. The method of claim 6, And a ring-shaped sealing means for sealing the high pressure region and the low pressure region on either the second volume chamber side or the roller end surface side. The method of claim 9, A fluid machine characterized by coinciding the center of the annular seal means with the shaft center. The method of claim 6, And a bearing on the lower wall of the second volume chamber for freely supporting the shaft upper end. The method of claim 11, And a bearing surface of the second support frame in which the upper end of the shaft is freely rotated is lubricated through an oil supply passage passing through the upper and lower sides of the shaft and a bearing space formed between the upper end of the shaft and the bearing. The method of claim 12, The oil supply passage installed in the shaft is characterized in that the fluid off the shaft center of the shaft. The method of claim 13, The oil supply passage provided in the shaft is in communication with the lower bearing of the first support frame and the upper bearing of the roller, respectively. The method according to any one of claims 12 to 14, The shaft is a fluid machine, characterized in that both the shaft of the transmission mechanism and the shaft shaft end passing through the transmission mechanism freely supported by the third support frame. The method of claim 1, And a first balancer and a second balancer disposed on the inside of the roller on the shaft of the compression mechanism. The method of claim 1, A fluid machine, characterized in that the suction gas is sucked in the compression direction of the compression chamber of the compression mechanism from the upper side and compressed toward the lower side. The method of claim 17, And a sealing means for sealing the high pressure portion and the low pressure portion on the discharge side of the roller constituting the compression mechanism portion. The method of claim 17, And a volume chamber communicating with the final compression chamber in an outer circumference of a cylinder constituting the compression mechanism. The method of claim 1, A fluid machine, characterized in that the terminal mounting portion of the power mechanism portion is installed in a sealed case having a space region opposed to the cylinder in the region of the compression mechanism portion. The method of claim 20, And the terminal mounting portion is disposed in a cutout portion of the first support frame supporting the shaft of the compression mechanism portion. The method of claim 1, An anti-rotation mechanism is provided on the first support frame to give the roller of the compressor section a rotating motion that does not follow the rotation. Fluid machine, characterized in that. In a fluid machine in which a compression mechanism portion consisting of a cylinder, a roller, and a blade and an electric mechanism portion for driving the compression mechanism portion are arranged in a sealed case, A cylindrical roller having a spiral groove formed therein is formed with a spiral groove that guides the suction gas into the sealed case through a suction port disposed at the lower part of the compression mechanism, and has a pitch smaller from the suction end side to the discharge end side in a cylinder supported at both ends. The compressed gas is discharged out of the sealed case by a spiral mechanism in which a spiral blade is freely inserted into the roller, and the compressed compressor portion is composed of a stator fixed to the inner wall of the sealed case and a rotor mounted on a shaft that serves as a shaft of the compressor sphere. A fluid machine disposed above the transmission mechanism and freely supported by two support frames with a shaft passing through the compression mechanism and the transmission mechanism between the transmission mechanism.