CN112177925A

CN112177925A - Bearing seat and horizontal scroll compressor thereof

Info

Publication number: CN112177925A
Application number: CN202011143589.2A
Authority: CN
Inventors: 陆志远; 郭华明
Original assignee: Suzhou Yinghuate Vortex Technology Co Ltd
Current assignee: Suzhou Yinghuate Vortex Technology Co Ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-01-05

Abstract

The application provides a bearing seat, comprising: a base, one end of the base is provided with a bearing chamber, the other end of the base is provided with a bearing hole penetrating to the bearing chamber; a plurality of installation arms, the plurality of installation arms are respectively fixed at intervals On the perimeter of the base; the oil deflector panel, which is seamlessly fixed between two adjacent mounting arms. The present application also provides a horizontal scroll compressor using the above bearing seat, comprising: a casing, a compression mechanism and a driving mechanism arranged in the casing, a bearing seat is arranged between the compression mechanism and the driving mechanism; The output shaft passes through the bearing hole and the bearing chamber in turn and is connected to the compression mechanism for transmission, and the bearing chamber is provided with a bearing; the oil retaining panel is seamlessly fitted with the bottom of the side wall of the casing. The technical effect of the present application is that the bearing seat separates the compression mechanism and the driving mechanism, preventing the lubricating oil in the driving mechanism from flowing into the area where the compression mechanism is located, thereby effectively avoiding the occurrence of oil absorption by the scroll.

Description

Bearing seat and horizontal scroll compressor thereof

Technical Field

The invention relates to the technical field of compressors, in particular to a bearing seat and a horizontal scroll compressor thereof.

Background

The oil supply mode of the low-pressure cavity type horizontal scroll compressor is generally divided into an oil pump oil supply mode and a differential pressure oil supply mode. Lubricating oil of the low-pressure cavity type horizontal scroll compressor is generally stored in a shell on the motor side, when the liquid level of the lubricating oil in the shell reaches a certain height, the lubricating oil in the shell can be sucked by a scroll plate, so that the lubricating oil in the shell enters a system along with the exhaust of the compressor, the oil circulation rate of a refrigeration or heat pump system is increased, and the heat exchange efficiency is reduced. Meanwhile, excessive lubricating oil entering the scroll plate can not only reduce the refrigerant entering the scroll, reduce the refrigerating capacity, but also cause the conditions of liquid impact and the like, and impurities in the lubricating oil can also cause the damage of the scroll plate. It is therefore desirable to effectively separate the lubricant from the scroll.

The prior art discloses patents previously filed by the present company, which are published as: CN111648962A, entitled oil circulation structure of horizontal scroll compressor, specifically comprising a shell and a compression mechanism, a driving mechanism, an oil-gas separation device, a return pipe and an oil suction hole arranged in the shell, wherein the internal cavity limited by the shell is divided into a high-pressure cavity and a low-pressure cavity by a partition plate, and the oil-gas separation device is used for separating and accumulating the lubricating oil in the exhaust gas of the compression mechanism in an oil pool of the high-pressure cavity; one end of the return pipe is communicated with the high-pressure cavity oil pool, and the other end of the return pipe is communicated with a lubricating oil channel in the rotating shaft of the driving mechanism. In the technical scheme of this patent, the sunction inlet of scroll easily inhales oil to lead to the refrigeration efficiency of compressor to reduce and the easy liquid impact scheduling problem that takes place of scroll.

In view of the above, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problem, the invention provides the bearing seat, and the lubricating oil on two sides of the bearing seat can be prevented from mutually permeating through the oil baffle panel. In addition, the invention also provides a horizontal scroll compressor using the bearing seat, and the bearing seat is arranged between the driving mechanism and the compression mechanism of the compressor, so that lubricating oil on one side of the driving mechanism is prevented from permeating into one side of the compression mechanism, and the condition that a scroll plate in the compression mechanism absorbs oil is avoided.

In order to solve the above technical problem, the present application provides a bearing seat, including: the bearing device comprises a base, a bearing chamber and a bearing hole, wherein the bearing chamber is arranged at one end of the base, and the bearing hole penetrating through the bearing chamber is formed at the other end of the base; a plurality of mounting arms fixed to a circumferential surface of the base at intervals, respectively; and the oil blocking panel is seamlessly fixed between every two adjacent mounting arms.

In the bearing seat of this application, the installation arm is provided with a plurality ofly at intervals for make the bearing seat can interference fit better in horizontal compressor's casing, can effectively prevent horizontal compressor's casing simultaneously and warp. The oil baffle panel is used for blocking lubricating oil on two sides of the bearing seat.

Preferably, an oil drain hole penetrating the mounting arm is provided in a circumferential wall of the bearing chamber. The preferable technical effects are as follows: for discharging the oil discharge hole in the bearing chamber.

Further, the oil drain hole is located between the other end of the base and the oil baffle panel. The oil drain hole is used for discharging the lubricating oil in the bearing chamber to the direction of the other end of the oil baffle panel facing the base, so that the lubricating oil does not flow into one side of the oil baffle panel far away from the oil drain hole.

Preferably, an oil return pipe through hole for installing an oil return pipe is formed in the oil blocking panel, and the oil return pipe penetrates through the oil return pipe through hole without a gap. The preferable technical effects are as follows: the oil return pipe can transfer the lubricating oil circulation of the horizontal scroll compressor, so that the friction generated during the operation of the horizontal scroll compressor can be reduced, and the working efficiency of the horizontal scroll compressor is improved.

In addition, this application has still provided the horizontal scroll compressor who uses above-mentioned bearing frame, includes: the compressor comprises a shell, a compression mechanism and a driving mechanism, wherein the compression mechanism and the driving mechanism are arranged in the shell; an output shaft of the driving mechanism sequentially penetrates through the bearing hole and the bearing chamber to be in transmission connection with the compression mechanism, and a bearing is arranged in the bearing chamber; the oil baffle panel is in seamless fit with the bottom of the side wall of the shell.

The technical effects of this application lie in: the bearing seat separates compression mechanism and actuating mechanism, avoids the lubricating oil among the actuating mechanism to flow into in the region that compression mechanism is located to can effectively avoid the condition of scroll oil absorption to take place.

Preferably, a silencing cover is arranged in the shell and divides the shell into a first closed space and a second closed space; the compression mechanism and the driving mechanism are located in the first closed space, a through hole used for being connected with an exhaust port of the compression mechanism is formed in the silencing cover, and the through hole is communicated with the second closed space.

The first closed space is a low-pressure cavity, and the second closed space is a high-pressure cavity; the silencing cover can reduce the noise generated when the compressor works.

Preferably, an oil content device is arranged in the second closed space, and an input end of the oil content device is communicated with the through hole.

Preferably, the drive mechanism includes: the stator is fixed on the inner wall of the shell; the rotor is rotatably arranged in the stator, and a rotating shaft is coaxially fixed in the rotor; the rotating shaft is provided with an axial hole along the length direction of the rotating shaft; and an oil return assembly communicated with the axial hole is arranged in the second closed space.

Preferably, a radial hole penetrating to the axial hole is formed in the circumferential surface of the rotating shaft. The radial hole is used for conveying lubricating oil in the axial hole to the driving mechanism, so that the working efficiency of the driving mechanism is improved conveniently.

Preferably, the oil return assembly comprises a throttling device and an oil return pipe, the throttling device is arranged in the second closed space, and an output end of the throttling device is communicated with the axial hole through the oil return pipe.

Further, the bearing seat is fixed in the shell in an interference mode.

The beneficial effects of the technical scheme of the application are that:

1. the bearing seat has a simple structure and is convenient to assemble;

2. impurities in the lubricating oil are effectively prevented from being directly sucked into the scroll plate, so that the damage of the scroll plate can be avoided, wherein the scroll plate is a movable scroll plate and a fixed scroll plate which are arranged in the compression mechanism;

3. the oil circulation rate of the compressor is effectively reduced, and tests show that the oil circulation rate can be reduced by more than 0.7%.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below.

Fig. 1A and 1B are schematic perspective views of a bearing seat according to this embodiment respectively;

FIG. 2 is a schematic structural view of the horizontal scroll compressor according to the present embodiment;

FIG. 3A is a highly schematic view of the lubricating oil of the scroll compressor in the prior art, and FIG. 3B is a highly schematic view of the lubricating oil of the scroll compressor in the present embodiment;

FIG. 4 is a schematic view of the liquid level height of the proposed scroll compressor in setting a safety margin for lubrication oil.

Wherein the reference numbers referred to in the figures are as follows:

11-a bearing chamber; 12-a bearing bore; 13-a mounting arm; 14-oil baffle panel; 15-oil drain hole; 16-a housing; 17-a compression mechanism; 18-a drive mechanism; 19-a silencing cover; 20-a first enclosed space; 21-a second enclosed space; 22-oil separation device; 23-a through hole; 24-a stator; 25-a rotor; 26-a rotating shaft; 27-axial bore; 28-radial holes; 29-a throttling device; 30-an oil return pipe; 31-cross slip ring plane; 32-thrust face; 33-guide ring fixing holes; 34-pressing a groove; 35-a movable scroll; 36-a fixed scroll; 37-oil return pipe via hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment proposes a bearing housing, as shown in fig. 1A and 1B, which includes: the bearing device comprises a base, wherein a bearing chamber 11 is arranged at one end of the base, and a bearing hole 12 penetrating through the bearing chamber 11 is formed in the other end of the base; a plurality of mounting arms 13, the plurality of mounting arms 13 being fixed to the circumferential surface of the base at intervals, respectively; and the oil baffle panel 14, wherein the oil baffle panel 14 is seamlessly fixed between two adjacent mounting arms 13.

Wherein, the mounting arm 13 is provided with a plurality of at intervals for enabling the bearing seat to be better interference-fitted in the housing 16 of the horizontal compressor, and at the same time, the housing 16 of the horizontal compressor can be effectively prevented from being deformed. The oil baffle plate 14 blocks the lubricating oil on both sides of the bearing seat.

As an embodiment of the present application, as shown in fig. 1A and 1B, an oil drain hole 15 penetrating the mounting arm 13 is provided in a circumferential wall of the bearing chamber 11. The technical effects of the embodiment are as follows: for discharging the oil discharge hole 15 in the bearing chamber 11.

As one embodiment of the present application, as shown in fig. 1A and 1B, an oil drain hole 15 is located between the other end of the base and the oil deflector 14. The technical effects of the embodiment are as follows: for discharging the lubricating oil in the bearing chamber 11 to the direction of the oil baffle plate 14 toward the other end of the base, so that the side of the oil baffle plate 14 away from the oil discharge hole 15 does not penetrate the lubricating oil.

As an embodiment of the present application, as shown in fig. 1A and 1B of fig. 1, the oil deflector 14 and the mounting arm 13 are both arc-shaped plates, and the radius of the circle on which the oil deflector 14 is located is smaller than the radius of the circle on which the mounting arm 13 is located. The problem that the bearing seat inclines due to overlarge interference is solved when the mounting arm 13 of the bearing seat is in interference assembly.

Further, the radius of the circle where the oil baffle panel 14 is located is 0.25-0.35 mm smaller than the radius of the circle where the mounting arm 13 is located, wherein when the size is 0.3mm, the oil baffle panel 14 can compensate the deformation of the mounting shell 16 (the bearing seat is mounted in the shell 16 in an interference manner), so that the technical problem of inclination of the bearing seat invention caused by excessive interference between the shell 16 and the oil baffle panel 14 of the bearing seat can be effectively solved.

In addition, as shown in fig. 2, the present application also proposes a horizontal scroll compressor using the above bearing housing, including:

the compressor comprises a shell 16, a compression mechanism 17 and a driving mechanism 18 which are arranged in the shell 16, wherein a bearing seat is arranged between the compression mechanism 17 and the driving mechanism 18; the compression mechanism 17 includes a movable scroll 35 and a fixed scroll 36.

An output shaft of the driving mechanism 18 sequentially penetrates through the bearing hole 12 and the bearing chamber 11 to be in transmission connection with the compression mechanism 17, and a bearing is arranged in the bearing chamber 11; it is determined from the description herein and in conjunction with the above that the oil discharge hole 15 in the bearing chamber 11 is communicated with the space on the side of the driving mechanism 18, so that the suction of the lubricating oil in the compression mechanism 17 can be effectively avoided (wherein the specific structure and operation of the driving mechanism 18 and the compression mechanism 17 are described in the prior art, namely, in the patent previously published by the applicant, the application number is 2020106488156, and the name is an oil circulation structure of a horizontal type scroll compressor). The oil baffle panel 14 is seamlessly attached to the bottom of the side wall of the housing 16.

The technical effects of this application lie in: the bearing seat separates the compression mechanism 17 from the drive mechanism 18, and prevents the lubricating oil in the drive mechanism 18 from flowing into the region where the compression mechanism 17 is located.

As an embodiment of the present application, as shown in fig. 2, a sound-deadening cover 19 is provided in the casing 16, and the casing 16 is partitioned into a first closed space 20 and a second closed space 21 by the sound-deadening cover 19; the compression mechanism 17 and the driving mechanism 18 are located in the first closed space 20, and the silencing cover 19 is provided with a through hole 23 for connecting with the exhaust port of the compression mechanism 17, and the through hole 23 is communicated with the second closed space 21.

Wherein the first enclosed space 20 is a low pressure chamber, and the second enclosed space 21 is a high pressure chamber; the silencing cover 19 can reduce the noise generated when the compressor is operated.

Further, an oil content device 22 is provided in the second sealed space 21, and an input end of the oil content device 22 communicates with the through hole 23.

Further, the drive mechanism 18 includes: a stator 24, the stator 24 being fixed to an inner wall of the housing 16; a rotor 25, the rotor 25 being rotatably provided in the stator 24, a rotating shaft 26 being coaxially fixed in the rotor 25; the rotating shaft 26 is provided with an axial hole 27 along the length direction thereof; the second closed space 21 is provided therein with an oil return assembly communicating with the axial hole 27. The oil return assembly is used for conveying the lubricating oil in the second closed space 21 to the bearing chamber 11 through the axial hole 27 so as to lubricate the bearing and the thrust surface 32.

As an embodiment of the present application, as shown in fig. 2, a radial hole 28 penetrating to the axial hole 27 is provided on the circumferential surface of the rotating shaft 26. The radial holes 28 serve to deliver the lubricating oil in the axial holes 27 to the rotor 25, thereby improving the operating efficiency of the rotor 25.

Further, the oil return assembly includes a throttle 29 and an oil return pipe 30, the throttle 29 is disposed in the second closed space 21, and an output end of the throttle 29 communicates with the axial hole 27 through the oil return pipe 30. In addition, the oil baffle panel 14 is provided with an oil return pipe through hole 37, and the diameter of the oil return pipe through hole 37 is equal to the outer diameter of the oil return pipe 30.

As an embodiment of the present application, the bearing housing is interference fixed in the housing 16.

As other embodiments of the present application, as shown in fig. 1A and 1B of fig. 1, the bearing seat is further provided with one or more combinations of an oldham ring plane 31, a thrust surface 32, a guide ring fixing hole 33 and a pressure groove 34.

The thrust surface 32 is in contact with the back surface of the movable scroll 35, and bears the axial force of the movable scroll 35 to prevent the movable scroll 35 from axially moving; the cross slip ring plane 31 is used for placing the cross slip ring; the guide ring fixing hole 33 is a screw hole for fixing the guide ring; the press groove 34 is used for enabling the shell 16 to generate certain deformation to be embedded into the press groove 34 during assembly, so that the main bearing seat is prevented from generating axial displacement, an annular bulge used for being embedded into the press groove 34 is further arranged on the inner wall of the shell 16, and the peripheral surface of the oil baffle panel 14 is in seamless fit with the annular bulge.

In addition, a certain safety margin can be set in consideration of the influence of the inclination angle and the rolling angle generated when the compressor is actually used on the liquid level of the lubricating oil. As shown in fig. 4, where the theoretical lubricating oil level is H₁The actual liquid level of the lubricating oil is H₂The height of the safety margin is Δ H ═ H₁-H₂。

Compared with the existing horizontal scroll compressor, the horizontal scroll compressor can obviously reduce the volume of lubricating oil in the shell area where the movable scroll 35 and the fixed scroll 36 are located, so that the situation that the scrolls absorb oil is avoided. As shown in fig. 3, where 3A in fig. 3 is the liquid level height of the lubricating oil in the horizontal scroll compressor in which the bearing seat of the present embodiment is not installed in the prior art, it is obvious that the height of the lubricating oil between the compression mechanism 17 and the drive mechanism 18 is uniform, and in this case, the suction port of the compression mechanism 17 easily sucks the lubricating oil.

In contrast, 3B in fig. 3 is a horizontal scroll compressor using a bearing seat with an oil baffle plate 14 in the present embodiment, and it is obvious that the lubricating oil in the region where the driving mechanism 18 is located is isolated from the region where the compression mechanism 17 is located in the present embodiment, so as to avoid the situation that the suction port of the compression mechanism 17 sucks in the lubricating oil.

The working principle is as follows:

oil circulation of the horizontal compressor: the refrigerant sucked from the air suction port can carry part of lubricating oil in the oil pool into the scroll plate, and is discharged to the high-pressure cavity from the scroll exhaust port. The oil in the high-pressure cavity separates the lubricating oil in the exhaust gas and collects the lubricating oil in an oil pool at the bottom of the high-pressure cavity, and the lubricating oil in the high-pressure cavity is depressurized by a throttling device 29 and returns to the axial hole 27 of the rotating shaft 26 through an oil return pipe 30 to lubricate the bearing. The lubricating oil introduced into the bearing chamber 11 lubricates the thrust surface 32 by the agitation of the orbiting scroll 35, and the excess lubricating oil is returned to the oil pool on the drive mechanism 18 side through the oil drain hole 15. Thereby achieving oil circulation inside the compressor.

It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims

1. A bearing housing, comprising:

the bearing device comprises a base, wherein one end of the base is provided with a bearing chamber (11), and the other end of the base is provided with a bearing hole (12) penetrating through the bearing chamber (11);

a plurality of mounting arms (13), wherein the mounting arms (13) are respectively fixed on the peripheral surface of the base at intervals;

the oil baffle panel (14), the oil baffle panel (14) is seamlessly fixed between two adjacent mounting arms (13).

2. A bearing housing according to claim 1, characterized in that the circumferential wall of the bearing chamber (11) is provided with an oil drain hole (15) through the mounting arm (13).

3. A bearing housing according to claim 2, characterized in that the oil drain hole (15) is located between the other end of the base and the oil baffle panel (14).

4. A bearing housing according to claim 3, characterized in that the oil baffle panel (14) is provided with an oil return pipe through hole (37) for mounting an oil return pipe (30), the oil return pipe (30) passing through the oil return pipe through hole (37) without a gap.

5. A horizontal scroll compressor using the bearing housing of any one of claims 1 to 4, comprising:

the compressor comprises a shell (16), and a compression mechanism (17) and a driving mechanism (18) which are arranged in the shell (16), wherein a bearing seat is arranged between the compression mechanism (17) and the driving mechanism (18);

an output shaft of the driving mechanism (18) sequentially penetrates through the bearing hole (12) and the bearing chamber (11) to be in transmission connection with the compression mechanism (17), and a bearing is arranged in the bearing chamber (11);

the oil baffle panel (14) is seamlessly attached to the bottom of the side wall of the shell (16).

6. The horizontal scroll compressor of claim 5,

a silencing cover (19) is arranged in the shell (16), and the shell (16) is divided into a first closed space (20) and a second closed space (21) by the silencing cover (19);

the compression mechanism (17) and the driving mechanism (18) are located in the first closed space (20), a through hole (23) used for being connected with an exhaust port of the compression mechanism (17) is formed in the silencing cover (19), and the through hole (23) is communicated with the second closed space (21).

7. The horizontal scroll compressor according to claim 6, wherein an oil content device (22) is provided in the second enclosed space (21), and an input end of the oil content device (22) communicates with the through hole (23).

8. The horizontal scroll compressor according to claim 7, wherein the drive mechanism (18) comprises:

a stator (24), the stator (24) being fixed on an inner wall of the housing (16);

a rotor (25), the rotor (25) being rotatably disposed in the stator (24), a rotating shaft (26) being coaxially fixed in the rotor (25);

the rotating shaft (26) is provided with an axial hole (27) along the length direction thereof in a penetrating way;

an oil return assembly communicated with the axial hole (27) is arranged in the second closed space (21).

9. The horizontal scroll compressor according to claim 8, wherein a radial hole (28) penetrating to the axial hole (27) is provided on a peripheral surface of the rotary shaft (26).

10. The horizontal scroll compressor according to claim 8, wherein the oil return assembly includes a throttle device (29) and an oil return pipe (30), the throttle device (29) is disposed in the second hermetic space (21), and an output end of the throttle device (29) communicates with the axial hole (27) through the oil return pipe (30).