KR100612811B1 - Horizontal Rotary Compressor - Google Patents

Abstract

An object of this invention is to make it possible to reliably supply the lubricating oil which accumulated on the low side to the sliding part of a compression mechanism part even if the compressor inclines to either side of a motor part side or a compression mechanism part in a horizontal rotary compressor.

The horizontal rotary compressor 40 includes a compression mechanism portion 42 for compressing a working fluid in a sealed container 1 in which lubricating oil is stored at the bottom, and a motor portion connected to the compression mechanism portion 42 via a shaft 4. It is provided with oil supply means which accommodates 41, and supplies lubricating oil to the sliding part of the compression mechanism part 42. The oil supply means includes first oil supply means for supplying lubricating oil at the bottom of the compression mechanism part to the sliding part of the compression mechanism part 42 and second oil supply for supplying lubricating oil at the bottom of the motor part side to the sliding part of the compression mechanism part 42. Have the means.

Compression mechanism part, motor part, compression chamber, oil supply passage, bearing, partition plate

Description

Horizontal Rotary Compressor {Horizontal Rotary Compressor}

1 is a longitudinal sectional view of a rotary compressor according to one embodiment of the present invention;

FIG. 2 is a view corresponding to A-A cross section in FIG.

Fig. 3 is an enlarged sectional view of the main portion when the vanes of the lateral rotary compressor of Fig. 1 are in the top dead center position.

Fig. 4 is an enlarged sectional view showing the main parts when the vanes of the lateral rotary compressor of Fig. 1 are in the bottom dead center position.

FIG. 5 is a view corresponding to FIG. 2 showing a modification of the intake port of the horizontal rotary compressor of FIG. 1; FIG.

FIG. 6 is a view corresponding to FIG. 1 showing a modification of the suction port of the horizontal rotary compressor of FIG. 1; FIG.

FIG. 7 is a perspective view of a unit cover for oil supply used in the horizontal rotary compressor of FIG. 1; FIG.

Fig. 8 is a longitudinal sectional view of the horizontal rotary compressor of Fig. 1 being inclined low toward the compression mechanism part.

9 is a longitudinal sectional view of the horizontal rotary compressor of FIG. 1 inclined low toward the compression mechanism part;

<Explanation of symbols for the main parts of the drawings>

1: sealed container

2: Stator

3: rotor

4: shaft

5: Main bearing (end plate)

6: first cylinder

7: partition plate (single plate)

8: second cylinder

9: part bearing (end plate)

10, 11: crank part

12: first roller

13: second roller

14: first vane

15: second vane

16: first spring

17: second spring

18: suction chamber

19: compression chamber

20: vane slot

24: discharge pipe

25: oiling cover

26: oil supply passage

27: vane pump inlet

30: throttle hole

31: communication hole

32, 36: centrifugal pump

34: oil supply pipe

35 support member

40: horizontal rotary compressor

41: motor unit

42 compression unit

TECHNICAL FIELD The present invention relates to a horizontal rotary compressor, and is particularly suitable for a horizontal rotary compressor used in an automobile air conditioner.

Compressors for automobile air conditioners are strongly required to have basic performances such as high efficiency, high reliability, low vibration, and low noise, as well as space saving, small size, light weight, and low cost. In order to mount a compressor in the engine room with less space, the compressor which can be installed in a horizontal arrangement from the space-saving point is preferable. In addition, the compressor must not only be compact, lightweight and inexpensive, but also be able to maintain high reliability even when exposed to harsh use conditions. In particular, when the vehicle is stopped for a long time on a hill or when driving on a rough road, it should be able to operate without problems even when the compressor is inclined.

As a horizontal hermetic rotary compressor which can respond to the inclination of a compressor, for example, it is disclosed by Unexamined-Japanese-Patent No. 11-182429 (patent document 1). This horizontal hermetic rotary compressor is provided with a rotary compression mechanism driven by a motor and its rotary shaft in an airtight container in which lubricant oil is stored at the bottom, and a lubricant stored at the end of the rotary compression mechanism side of the rotary shaft, and stored in the bottom of the sealed container. And a lubricating oil sucked from the lubricating pipe, and lubricating oil sucked from the lubricating pipe, each of which is lubricated through a lubrication passage provided inside the rotating shaft, and the tip end of the lubricating pipe along the inclination of the horizontally sealed rotary compressor near the base of the rotary shaft side. Install the flexible part to bend. Patent Document 1 describes that even if the compressor is inclined by the heating unit, the tip of the oil supply pipe can follow the oil supply line to secure the oil supply.

[Patent Document 1]

Japanese Patent Laid-Open No. 11-182429 (Fig. 1)

In the conventional compressor, when the motor side (the opposite side to the rotary compression mechanism having the oil supply pipe) is inclined low, even if the oil supply pipe follows the inclination, the lubricating oil at the distal end of the oil supply pipe decreases and the oil level is lowered. Therefore, there was a problem that can not be reliably refueling. In addition, when the motor side is inclined extremely low, there is a problem that the lubricating oil itself does not exist at the distal end of the oil supply pipe, and the distal end of the oil supply pipe is exposed above the oil surface, and oil supply becomes impossible.

SUMMARY OF THE INVENTION An object of the present invention is to provide a horizontal rotary compressor capable of reliably supplying the stored lubricant oil accumulated on the lower side to the sliding part of the compression mechanism, even if the compressor is inclined greatly to either the motor side or the compression mechanism side. have.

Further objects and advantages of the present invention will become apparent from the following description.

In order to achieve the above object, the present invention accommodates a compression mechanism portion for compressing a working fluid in a sealed container in which lubricating oil is stored at the bottom, a motor portion connected via a shaft to the compression mechanism portion, and storing the lubricating oil in the compression mechanism portion. A horizontal rotary compressor having a lubrication means for supplying a sliding portion of the compressor, wherein the lubrication means comprises: first lubrication means for supplying lubricating oil of the bottom portion of the compression mechanism portion to the sliding portion of the compression mechanism portion, and a bottom portion of the motor portion side. It is set as the structure which has the 2nd oil supply means which supplies a lubricating oil to the sliding part of the said compression mechanism part.

More preferably in the present invention, the first oil supply means is a vane pump chamber formed in a hermetically sealed lower portion of the vane reciprocating by following the roller eccentrically rotated in the cylinder of the compression mechanism portion according to the rotation of the shaft. And a vane pump having a suction port for sucking lubricating oil at the bottom of the sealed container into the vane pump chamber, and an oil supply passage for supplying lubricating oil to the sliding portion of the compression mechanism part from the vane pump chamber.

In addition, the compression mechanism portion comprises two sets of compression portions consisting of first and second compression portions, wherein the first compression portion is a main bearing, a first cylinder, a partition plate, a first roller, and a first shaft supporting the shaft. 1 vane, wherein the second compression unit comprises the partition plate, the second cylinder, the sub-bearing shaft supporting the shaft, the second roller and the second vane, the vane pump is the second It is formed in the compression part side.

Moreover, the suction port to the said vane pump chamber is formed by the recessed groove formed in at least one side containing the contact surface of the cylinder and the end plate which comprise the said compression mechanism part.

The side face of the end plate has a cover for oil supply 25 comprising a plate having a groove forming a fuel supply path by press working a part of the oil supply path for supplying lubricant to the sliding part of the compression mechanism part from the vane pump chamber. It is formed by fixing to the side.

Moreover, the compression mechanism part side and the motor part side are partitioned by the end plate of the motor part side which comprises the said compression mechanism part, and the communication hole which communicates a compression mechanism part side and a motor part side is formed in the lower part of the said end plate, and the said compression mechanism part The discharge port of the compression chamber is installed to communicate with the motor part, and an throttling hole is formed in the upper portion of the main bearing to communicate the compression mechanism part side and the motor part side, and the working fluid is discharged to the outside of the compressor on the compression mechanism part side. It is to install the discharge pipe.                         

Further, the second oil supply means makes the inside of the sealed container discharge pressure, while one end portion communicates with the opening of the motor portion side of the through hole of the shaft, and the other end portion extends to the bottom of the sealed container. It is provided with a useful pipe.

In addition, the oil supply pipe is rotatably attached to the support member for supporting the oil supply pipe in accordance with the rotation of the entire compressor.

Further, a through hole communicating with the sliding part of the compression mechanism part is formed in the shaft, and a centrifugal pump is provided at at least one end of the compression mechanism part side and the motor part side of the through hole.

Hereinafter, an embodiment of the horizontal rotary compressor of the present invention will be described with reference to Figs.

First, the whole structure of the horizontal rotary compressor of the present embodiment will be described with reference to Figs. This embodiment is an example of a horizontal two-cylinder rotary compressor.

The horizontal rotary compressor 40 is used as a component of a refrigeration cycle of an automobile air conditioner and the like in an engine room of an automobile. This compressor 40 is comprised in the airtight container 1 in which the motor part 41 and the compression mechanism part 42 driven by this motor part 41 are accommodated.

The airtight container 1 is comprised with the horizontally long cylindrical main-body part and the cover part of both sides. The motor part 41 is comprised with the stator 2 fixed to the airtight container 1, and the rotor 3 which pressed the shaft 4 in. The compression mechanism part 42 is directly connected to the motor part 41 by the shaft 4, and is provided with two sets of compression parts.

The first compression portion is the main bearing (5), the first cylinder (6), the partition plate (7), the first roller (12), the first vanes (14), the first spring (16) for axially supporting the shaft (4). It is comprised by). The second compression unit is a partition bearing 7, a second cylinder 8, a sub bearing 9 for axially supporting the shaft 4, a second roller 13, a second vane 15, and a second spring 17. It is comprised by). The two cylinders 6 and 8 sandwich the partition plate 7 in the middle thereof, and arrange the main bearing 5 and the sub bearing 9 on both sides thereof, so that the two spaces surrounded by them are used as the cylinder chamber. Forming. Thus, the main bearing 5, the partition plate 7 and the sub bearing 9 function as end plates for the respective cylinders 6, 8. And the main bearing 5 is being fixed to the airtight container 1, and the inside of the airtight container 1 is divided into the compression mechanism part side and the motor part side.

The center of the shaft 4 is supported by the main bearing 5, and both left and right sides extend to the compression mechanism part side and the motor part side, and form a hole 33 penetrating left and right in the center part. This through hole 33 is formed for supplying lubricating oil to the sliding part of the compression mechanism part 42. Both ends of the shaft 4 are located near both ends of the airtight container 1, and the through hole 33 is drilled. The shaft 4 has two crank portions 10 and 11 that are 180 degrees out of phase with each other. The rollers 12 and 13 are fitted to each of these crank parts 10 and 11 so as to be rotatable. In this manner, by using two sets of compression sections having a phase different from each other by 180 degrees, the balance of the compression sections can be made good and the vibration can be reduced.

Next, specific configurations and operations of the first compression unit and the second compression unit will be described with reference to FIGS. 1 and 2.

As the shaft 4 rotates, the rollers 12 and 13 are eccentrically rotated in the cylinders 6 and 8. The vanes 14 and 15 are urged by the rollers 12 and 13 by the gas pressure (discharge pressure) and the springs 16 and 17 in the airtight container, and divide the cylinder interior into the suction chamber 18 and the compression chamber 19. Doing. Then, following the eccentric rotation of the rollers 12, 13, the reciprocating moves into the vane slot 20 of the cylinders 6, 8.

In the above configuration, the compression operation of the compressor 40 is performed as follows. When the motor portion 41 is energized, the rotor 3 drives the shaft 4, and the rollers 12 and 13 fitted to the crank portion 11 rotate eccentrically in the cylinders 6 and 8. Thereby, the working fluid (for example, refrigerant gas) is sucked into the suction chamber 18 from the suction pipe 23 through the suction port 21. After the suction is completed, the suction chamber 18 becomes the compression chamber 19, is compressed in the compression chamber 19, and discharged from the discharge port 22 having a discharge valve (not shown in the figure).

In the first compression section, the working fluid is discharged to the motor section. The working fluid discharged to the motor part side reaches the compression mechanism part side through the throttle hole 30 provided in the main bearing 5, and is discharged out of the compressor from the discharge pipe 24 opened to the compression mechanism part side. In the second compression part, the working fluid is discharged into the space 28a enclosed by the sub bearing 9 and the sub bearing cover 28, and is discharged to the motor part side through the through hole 29. The working fluid discharged to the motor part side is mixed with the working fluid discharged from the first compression part to reach the compression mechanism part side through the throttling hole 30 provided in the main bearing 5, and the discharge pipe opened to the compression mechanism part side ( Discharged to the outside of the compressor. Here, after the working fluid containing the lubricating oil passes through the throttling hole 30, the lubricating oil is separated by colliding with the oil separation plate 37 provided on the compression mechanism side opposite the throttling hole 30, and then the discharge pipe. It is discharged from the compressor 24 outside the compressor. The separated lubricant is collected at the bottom in the sealed container 1.

Next, the oil supply means to the compression mechanism portion will be described with reference to FIGS. 1 and 4.

The oil supply means for supplying lubricating oil to the sliding part of the compression mechanism part 42 includes the first oil supply means for supplying lubricating oil of the bottom part of the compression mechanism part side to the sliding part of the compression mechanism part 42 and the lubricating oil of the bottom part of the motor part side to the compression mechanism part. It has a 2nd oil supply means to supply to the sliding part of 42.

The first oil supply means uses a vane pump. In the lower part of the vane 15 which reciprocates in the cylinder 8 which is closest to the sub bearing 9, the vane pump chamber is formed by the vane 15, the cylinder 8, the partition plate 7, and the sub bearing 9. 15a) is formed in a hermetic manner, whereby a vane pump is constructed. Using this vane pump, lubricating oil stored in the bottom part of the airtight container 1 is pumped through the oil supply path 26 to the through-hole 33 in the shaft 4, and from the horizontal hole formed in the through-hole 33 Lubrication is carried out by sliding parts of the bearings 5 and 9, sliding parts of the rollers 12 and 13, and the like. Moreover, the oil supply path 26 is comprised by communicating the through-hole formed in the sub-bearing 9 and the sub-bearing cover 28, and the space formed by the recessed part of the oil supply cover 15, The vane pump chamber 15a ) And the through hole 33 of the shaft 4 to communicate with each other.

The second oil supply means is to supply oil by using a differential pressure between the pressure at the motor side in the sealed container 1 and the pressure in the compression mechanism portion 42. At the end of the shaft portion 4 on the motor side, an oil supply pipe 34 is formed to communicate with the through hole 33 of the shaft 4. The oil supply pipe 34 has one end attached to the support member 35 fixed to the airtight container 1, and the other end extends to the bottom in the airtight container 1. The lubricating oil at the bottom where the other end of the oil supply pipe 34 is located is pumped to the through hole 33 in the shaft 4 through the oil supply pipe 34 by the discharge pressure of the motor part side in the sealed container, Oil is supplied from the horizontal hole formed in the hole 33 to the sliding parts of the bearings 5 and 9, the sliding parts of the rollers 12 and 13, and the like. In addition, the support member 35 may be fixed to the stator 2.

Next, the oil supply operation of the first oil supply means when the compressor 40 is in the horizontal state will be described with reference to FIGS. 3 and 4.

This vane pump shows when vanes 15 are in the top dead center position in FIG. 3 and when vanes 15 are in the bottom dead center position in FIG. As the vane 15 moves upward, the lubricating oil stored in the bottom portion of the sealed container 1 is sucked into the vane pump chamber 15a from the suction port 27. Specifically, when the vane 15 moves upward, the lubricating oil sucked from both the oil supply passage 26 and the suction port 27 is sucked into the vane pump chamber 15a as shown in FIG. In the first half of this intake stroke, since the countercurrent resistance is large because of the inertia force of the lubricating oil in the oil supply passage 26, most flow in from the inlet 27. The inertial force in the oil supply passage 26 is generated by switching from the state where the lubricant oil in the oil supply passage 26 is sent to the oil supply cover side in the discharge step just before.

On the other hand, when the vane 15 is moved downward, the lubricating oil in the vane pump chamber 15a is extruded and becomes a discharge stroke. In the first half of this discharge stroke, the resistance of the inlet port 27 provided orthogonal to this flow path is larger than that of the flow path resistance caused by the inertia force of the lubricating oil in the oil supply passage 26, so that the flow rate flowing back from the inlet port 272 to the oil storage part is small. And most of them are discharged to the oil feed passage 26 side.

By repeating these operations, other than the lubricating oil which flows back somewhat from the suction port 27, it is supplied to the sliding part through the oil supply passage 26. The oil supply in the horizontal state of the compressor 40 is set to be performed by a vane pump.

In addition, the suction port 27 of the vane pump is formed by the concave groove formed in the cylinder 8 and the edge of the outer peripheral part of the sub-bearing 9. As a result, it is possible to obtain a compact and light-weight compressor 40 having a low cost, as compared with fabricating a tapered fluid diode separately and inserting it into the oil passage.

As shown in the modification of Fig. 5, when the position of the center of the suction hole 27 due to the concave groove formed in the cylinder 8 is shifted laterally from the center of the vane slot 20, the vanes 15 are lowered. It is difficult to be influenced by the downflow when moving to, and lubrication efficiency is improved. In addition, as shown in the modification of FIG. 6, the hole which forms the suction port 27 of the vane pump chamber may be provided in the sub-bearing 9 instead of the cylinder 8. As shown in FIG.

In addition, in this embodiment, in order to ensure high reliability by lubricating to the sliding part of the compression mechanism part 42, it is set as the following structures. The compression mechanism part 42 and the motor part 41 are divided by the main bearing 5, the throttling hole 30 is formed in the upper part of the main bearing, and the lubricating oil is provided in the lower part of the main bearing by the compression mechanism part 42 and the motor part. One or more communication holes 31 are formed so that 41 can move freely. The working fluid discharged from each cylinder 6, 8 is discharged to the motor part side once, and moves to the compression mechanism part side through the throttling hole 30 formed in the upper part of the main bearing. When passing through the throttle hole 30, the pressure of the working fluid decreases, so that the pressure in the compression mechanism part side is lower than in the motor part side. The lubricating oil stored in the bottom part of the airtight container 1 to balance this pressure difference moves from the motor part 41 to the compression mechanism part 42 via the communication hole 31, and therefore the oil surface of the compression mechanism part side is Higher than oil level Then, by setting the oil surface on the compression mechanism part side to be higher than the position of the through hole 33 for oil supply formed in the shaft 4, the head of the lubricating oil filling the oil supply passage 26 rises, and the oil supply efficiency of the vane pump is improved. Will be. In addition, by setting the oil level on the motor side to be lower than the lower end of the rotor 3, the stirring of the lubricating oil due to the rotation of the rotor 3 can be prevented, and the stirring loss can be reduced.

The oil supply operation when the compressor 40 is inclined will be described with reference to FIGS. 8 and 9.

Fig. 8 is a diagram showing a state in which the compressor 40 is inclined so that the compression mechanism part side is relatively downward. When the compression mechanism part side is inclined downward, the lubricating oil accumulated at the bottom of the motor part 41 moves to the compression mechanism part side through the communication hole 31 by gravity. Since the suction port 27 of the vane pump is close to the bottom of the sealed container 1 and is located on the compression mechanism part side, lubricant oil always exists around the suction port 27, and the lubricant can be supplied to the sliding part sufficiently. Here, in order to prevent the lubricant from going out of the compressor directly through the discharge port 24, the opening of the discharge port 24 is as far from the oil surface as possible in the non-lubricated position, that is, in the space on the compression mechanism part side, and the oil separation plate ( For 37), the working fluid is formed at a position close to the side opposite to the colliding side after passing through the throttle hole 30.

Fig. 9 is a diagram showing a state in which the compressor 40 is inclined so that the motor part side is relatively downward. When the motor part side is inclined downward, the lubricating oil accumulated at the bottom of the compression mechanism part 42 moves to the motor part side through the communication hole 31 by gravity. At this time, if it is inclined until the compression mechanism part side becomes substantially free of lubricating oil, the inside of the vane pump is filled with a working fluid (refrigerant gas), and the vane pump does not function. However, the suction port of the oil supply pipe 34 provided on the motor part side is immersed in the lubricating oil accumulated at the bottom of the motor part 41, and a sufficient lubricant is present around the suction port. Since the pressure on the motor side is higher than the pressure on the compression mechanism side, the lubricating oil on the motor side flows into the through hole 33 of the shaft 4 through the oil supply pipe 34 by the differential pressure, and is supplied to the sliding portion. do. Moreover, by the pressure difference between the compression mechanism part side and the motor part side, the working fluid also moves to the compression mechanism part side through the throttling hole 30 and the communication hole 31. At this time, the hole diameter of the communication hole 31 is set so that the pressure of the compression mechanism part 42 and the motor part 41 become equal, and the differential pressure oil supply will not become impossible.

When the compressor 40 is inclined, even if either of the compression mechanism side and the motor side are inclined downward, as described above, the oil is always supplied from the side where the lubricating oil is sufficiently accumulated, so that even if the inclination increases, the oil can be reliably supplied. High reliability can be maintained.

In addition, in this embodiment, centrifugal pumps 32 and 36 are attached to both ends of the shaft 4 in order to reliably lubricate the sliding parts and to ensure high reliability. The centrifugal pumps 32 and 36 have a simple structure in which holes are made in the center of the flat plate. When the action of the centrifugal pumps 32 and 36 is inclined such that the compressor 40 is almost horizontal or the compression mechanism side is lowered, that is, the flow of lubricating oil is directed from the vane pump to the sliding part through the oil supply passage 26. It demonstrates. The centrifugal pumps 32 and 36 narrow the inlet of the through hole 33 of the shaft 4 so that the lubricating oil that has been pushed by the vane pump passes through the through hole of the shaft 4 through the narrow inlet of the centrifugal pump 32. Try to enter 33). At this time, since the shaft 4 is rotating, centrifugal force acts on the lubricating oil. After passing through the inlet, the shaft 4 springs in the radial direction of the shaft 4 and moves to the wall surface of the through hole 33. By this continuous operation, a pumping action is attempted to draw lubricant into the through hole 33. Since the centrifugal pump 36 is at the outlet of the through hole 33 of the shaft 4, after the lubricant has passed through the centrifugal pump 36 and exits the through hole 33, the force for generating centrifugal force on the lubricant does not work. And no pump action occurs. In this case, the centrifugal pump 36 becomes a flow path resistance and serves to hold the lubricating oil in the through hole 33 of the shaft 4, so that the lubricating oil can be sufficiently supplied to the sliding portion.

When the compressor 40 is inclined so that the motor side is lowered, that is, when the flow of the lubricating oil is directed from the oil supply pipe 34 to the sliding part, the centrifugal pumps 32 and 36 each perform the opposite action to the above. By this configuration, it is possible to reliably lubricate the sliding portion, and improve the reliability.

Instead of the centrifugal pumps 32 and 36, other well-known oil supply mechanisms, for example, an oil supply mechanism called a paddle made by twisting a metal plate accommodated inside the shaft 4, a viscous pump, or the like may be used.

In addition, in this embodiment, even when the compressor 40 is inclined at the rotational surface of the shaft 4, it is structured as follows in order to reliably lubricate the sliding part and to ensure high reliability. The oil supply pipe 34 is attached to the support member 35 so as to be rotatable in the rotational surface of the shaft 4. The suction port of the oil supply pipe 34 always opens downward in the vertical direction due to its own weight or attached weight. With this configuration, even when the compressor 40 is inclined at the rotational surface of the shaft 4, the suction port of the lubrication pipe 34 is always immersed in lubricating oil and can be reliably lubricated by the sliding part. In the case of attaching and installing the weight, by attaching the magnet to the inlet port of the lubrication pipe 34, it is possible to adsorb the wear powder in the lubricating oil. Therefore, the wear powder does not enter the sliding part, and high reliability is ensured. can do.

In addition, in this embodiment, in order to provide a low-cost, compact and lightweight compressor 40, the configuration is as follows. A part of the oil supply passage 26 is formed by the sub-bearing cover 28 and the oil supply cover 25. As shown in FIG. 7, this oil supply cover 25 is comprised from the plate which has the groove which forms the oil supply path by press work, and is fixed to the sub bearing 9 together with the sub bearing cover 28. As shown in FIG. . This configuration eliminates the necessity of connecting pipes from the vane pump chamber 15a to the through holes 33 of the shaft 4 by a pipe, thereby eliminating the process of bending and attaching the pipes, thereby reducing the low-cost compressor 40. Can provide. In the case of using a pipe, it is necessary to bend it to a substantially c-shape, but it must be bent to a certain large radius, and the total length of the compressor 40 is increased by that amount. However, the configuration of the present embodiment avoids this problem. It is possible to provide a compact and lightweight compressor 40.

As is evident from the description of the above embodiment, according to the present invention, even if the compressor is greatly inclined to either the motor side or the compression mechanism side, the lubricating oil accumulated at the lower side can be reliably supplied to the sliding portion of the compression mechanism portion, and high reliability can be ensured. A horizontal rotary compressor can be obtained.

Claims (9)

A compression mechanism portion for compressing the working fluid in a sealed container in which lubricant oil is stored at the bottom, a motor portion connected to the compression mechanism portion via a shaft, and oil supply means for supplying the lubricant oil to the sliding portion of the compression mechanism portion. In one horizontal rotary compressor, The oil supply means includes first oil supply means for supplying lubricating oil at the bottom of the compression mechanism part to the sliding part of the compression mechanism part by a pumping action, and lubricating oil at the bottom of the motor part side by the differential pressure of the motor part and the compression mechanism part. A horizontal rotary compressor having a second oil supply means for supplying a sliding portion of the compression mechanism portion. The vane pump chamber according to claim 1, wherein the first oil supply means includes a vane pump chamber hermetically formed at a lower part of the vane that reciprocates in accordance with a roller that is eccentrically rotated according to the rotation of the shaft in the cylinder of the compression mechanism. And a vane pump having a suction port for sucking lubricating oil at the bottom of the vane pump chamber and a lubrication path for supplying lubricating oil to a sliding part of the compression mechanism part from the vane pump chamber. The said compression mechanism part is comprised by the two sets of compression parts which consist of a 1st and a 2nd compression part, The said 1st compression part is a main bearing which supports the said shaft, a 1st cylinder, a partition plate, and a 1st The roller is provided with a first vane, and the second compression unit includes the partition plate, a second cylinder, a sub-bearing supporting the shaft, a second roller and a second vane, and the vane pump The horizontal rotary compressor, characterized in that formed on the second compression side. 3. The horizontal rotary compressor according to claim 2, wherein the suction port to the vane pump chamber is formed by a concave groove formed on at least one side including a contact surface of a cylinder and an end plate constituting the compression mechanism portion. The oil supply cover 25 according to claim 2, wherein a part of the oil supply passage for supplying lubricating oil from the vane pump chamber to the sliding portion of the compression mechanism portion is formed by a plate having a groove forming a fuel supply passage by press working. It is formed by fixing to the side surface of a board, The horizontal rotary compressor characterized by the above-mentioned. The communication hole of Claim 1 or 2 which divides a compression mechanism part side and a motor part side by the end plate of the motor part side which comprises the said compression mechanism part, and communicates the compression mechanism part side and a motor part side to the lower part of the said end plate. And the discharge port of the compression chamber of the compression mechanism part is communicated with the motor part side, and an throttling hole communicating the compression mechanism part side and the motor part side is formed in the upper part of the main bearing, And a discharge pipe for discharging said working fluid to the outside. 2. The second oil supply means according to claim 1, wherein the second oil supply means makes the discharge pressure in the sealed container, and one end portion communicates with the opening of the motor part side of the through hole of the shaft, and the other end portion is the bottom of the sealed container. A horizontal rotary compressor comprising: a fuel supply pipe extending to a negative portion. The horizontal rotary compressor according to claim 7, wherein the oil supply pipe is rotatably attached to the support member for supporting the oil supply pipe in accordance with the rotation of the entire compressor. The through-hole according to any one of claims 1, 2, 3, 4, 5, 7, or 8, which communicates with a sliding part of the compression mechanism part, is formed in the shaft. And a centrifugal pump is provided at at least one end of the compression mechanism part side and the motor part side of the through hole.

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