CN111561448A

CN111561448A - Horizontal scroll compressor

Info

Publication number: CN111561448A
Application number: CN202010466169.1A
Authority: CN
Inventors: 孙庆丰
Original assignee: Suzhou Xuan Ling Technology Co ltd
Current assignee: Changzhou Secowei Energy Technology Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-08-21

Abstract

The invention discloses a horizontal scroll compressor, which comprises a shell, and a rotor, a movable scroll and a fixed scroll which are all arranged in the shell, wherein the shell is provided with an air inlet for introducing a refrigerant and an air outlet for discharging the refrigerant, the shell comprises a middle shell and a tail cover connected with the middle shell, the middle shell is provided with an installation plate, an oil storage cavity is formed between the installation plate and the tail cover, the air inlet is communicated with the oil storage cavity, one end of a rotating shaft of the rotor is rotatably connected to the installation plate, the rotating shaft is provided with an oil way, the installation plate is provided with an oil through hole communicated with the oil way, and the oil through hole is communicated with the oil storage cavity. The horizontal scroll compressor can effectively reduce the amount of lubricating oil in the middle shell provided with the stator and the rotor, reduce the oil stirring loss and improve the compression efficiency.

Description

Horizontal scroll compressor

Technical Field

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

Background

The horizontal scroll compressor is a positive displacement compressor, which generally includes a housing, a stator, a rotor, a movable scroll, a fixed scroll, etc. installed in the housing, wherein the stator is fixed in the housing, the rotor is rotatably connected with the housing through a rotating shaft thereof, and is adapted to the stator, and the rotating magnetic field generated by the stator drives the rotor and the rotating shaft to rotate. The movable vortex and the fixed vortex are mutually matched and are provided with involute-shaped vortex plates. The movable vortex is driven by the rotating shaft to rotate eccentrically, so that the movable vortex and the fixed vortex are matched to compress sucked refrigerant.

The casing of the horizontal scroll compressor is provided with an air inlet communicated with the cavity for mounting the stator and the rotor, the air inlet is used for introducing a refrigerant, lubricating oil contained in the refrigerant can be accumulated at the bottom of the cavity for mounting the stator and the rotor in the use process, and after the lubricating oil is accumulated too much, the lubricating oil is stirred in the rotation process of the rotor after the lubricating oil is contacted with the rotor, so that great oil stirring loss is generated, and the efficiency of the scroll compressor is not improved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a horizontal scroll compressor which can effectively reduce the oil stirring loss.

In order to achieve the purpose, the invention provides a horizontal scroll compressor, which comprises a shell, and a rotor, a movable scroll and a static scroll which are all arranged in the shell, wherein the shell is provided with an air inlet for introducing a refrigerant and an air outlet for discharging the refrigerant, the shell comprises a middle shell and a tail cover connected with the middle shell, the middle shell is provided with a mounting plate, an oil storage cavity is formed between the mounting plate and the tail cover, the air inlet is communicated with the oil storage cavity, one end of a rotating shaft of the rotor is rotatably connected to the mounting plate, the rotating shaft is provided with an oil way, the mounting plate is provided with an oil through hole communicated with the oil way, and the oil through hole is communicated with the oil storage cavity.

In addition, the invention also provides the following auxiliary technical scheme:

the oil through hole with be provided with the connecting hole between the oil storage chamber, the connecting hole lower extreme extends to the bottom in oil storage chamber.

The shell is characterized in that the shell is further provided with a baffle plate arranged in the oil storage cavity, the baffle plate divides the oil storage cavity into an upper oil cavity and a lower oil cavity, and the baffle plate is provided with an oil passing channel communicated with the upper oil cavity and the lower oil cavity.

The tail cover is provided with a plurality of convex columns extending into the oil storage cavity.

And an electrical element is arranged on the tail cover.

The mounting plate is provided with a mounting hole, a second bearing is arranged in the mounting hole, the rotating shaft is connected with the second bearing in a matching mode, and a gap communicated with the mounting hole, the oil through hole and the oil way is formed between the rotating shaft and the mounting plate.

The rotating shaft comprises a front end face and an eccentric shaft arranged on the front end face, and the oil way is communicated to the front end face.

And a third bearing is arranged between the eccentric shaft and the movable vortex, and the oil path is opposite to the third bearing.

The horizontal scroll compressor further comprises a front cover connected with the mounting shell, a containing cavity for containing the movable scroll and the fixed scroll is formed between the mounting shell and the front cover, and an inner cavity communicated with the containing cavity and the middle shell is formed in the mounting shell.

The horizontal scroll compressor comprises a front cover, a fixed scroll and an air outlet, wherein a cavity is arranged between the front cover and the fixed scroll, the air outlet is formed in the front cover and communicated with the cavity, and the horizontal scroll compressor further comprises an oil pipe communicated with the cavity and the oil storage cavity.

Compared with the prior art, the invention has the advantages that:

1. according to the horizontal scroll compressor, the oil storage cavity is arranged between the middle shell and the tail cover, the refrigerant introduced from the air inlet firstly passes through the oil storage cavity, so that most of lubricating oil in the refrigerant is temporarily stored in the oil storage cavity, and the lubricating oil in the oil storage cavity is pumped to supply to parts needing lubrication, such as bearings and the like, during the operation of the compressor, so that the lubricating oil quantity in the middle shell provided with the stator and the rotor can be effectively reduced, the oil stirring loss is reduced, and the working efficiency of the compressor is improved;

2. the oil storage cavity is internally provided with a plurality of convex columns, and the tail cover is used for mounting electrical elements, so that on one hand, the convex columns can increase the contact area and better separate lubricating oil in the refrigerant, and on the other hand, the convex columns can improve the heat dissipation efficiency, dissipate heat for the electrical elements and ensure the reliable work of the electrical elements.

Drawings

Fig. 1 is a schematic view of the structure of a horizontal scroll compressor of the present invention.

FIG. 2 is a schematic cross-sectional view of the horizontal scroll compressor of the present invention.

Fig. 3 is an enlarged view of a portion I in fig. 2.

Fig. 4 is an enlarged view of section II in fig. 2.

Fig. 5 is a schematic view of the junction of the tail cap and the intermediate housing of the present invention.

Fig. 6 is an enlarged view of section III in fig. 5.

FIG. 7 is a schematic view of the mounting plate of the present invention with gas passages.

FIG. 8 is a schematic view of the horizontal scroll compressor of the present invention with oil tubes.

Detailed Description

The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.

As shown in fig. 1 and 2, a horizontal scroll compressor according to a preferred embodiment of the present invention includes a housing 1, and in this embodiment, the housing 1 includes a substantially cylindrical intermediate housing 10, a tail cover 11 and a mounting housing 12 connected to both ends of the intermediate housing 10, respectively, and a front cover 13 connected to the mounting housing 12.

Referring to fig. 2, a housing chamber 21 for housing the orbiting scroll 2 and the non-orbiting scroll 20 is formed between the front cover 13 and the mounting housing 12, and the non-orbiting scroll 2 is fixedly mounted in the front cover 13. A compression chamber 22 for compressing the refrigerant is formed between the movable scroll 2 and the fixed scroll 20 in a matching manner, the fixed scroll 20 is further provided with a suction hole (not shown) and a discharge hole 23 which are communicated with the compression chamber 22, and the suction hole is usually arranged on the side surface of the fixed scroll 20 and is used for sucking the refrigerant; the discharge hole 23 is provided at a generally central position of the non-orbiting scroll 20, and the compressed refrigerant is discharged through the discharge hole 23 and discharged from the horizontal scroll compressor through a discharge port 130 provided in the front cover 13.

Middle casing 10 is equipped with inner chamber 10a, and stator 3 and rotor 4 all set up in inner chamber 10a, stator 3 and middle casing 10 fixed connection, and rotor 4 wears to establish in stator 3, and rotor 4 includes pivot 40, and the pivot 40 both ends are installed respectively on middle casing 10 and installation casing 12.

The intermediate housing 10 is open at one end connected to the mounting housing 12, and is provided with a mounting plate 100 at the other end. The mounting housing 12 includes a first mounting seat 120 extending into the intermediate housing 10, and a first bearing 121 is mounted in the first mounting seat 120. A second mounting seat 101 is provided on the mounting plate 100, and a second bearing 102 is mounted in the second mounting seat 101. Both ends of the rotation shaft 40 are respectively fitted in the first bearing 121 and the second bearing 102, thereby enabling smooth rotation. In this embodiment, the first bearing 121 is a ball bearing, and the second bearing 102 is a slide bearing.

Referring further to fig. 3, an eccentric shaft 400 is disposed at one end of the rotating shaft 40, the axis of the eccentric shaft 400 is parallel to and does not coincide with the axis of the rotating shaft 40, a bushing 401 is connected to the eccentric shaft 400, and the bushing 401 is coupled to a third bearing 25 installed in the back plate 24 of the orbiting scroll 2. When the rotation shaft 40 rotates, the eccentric shaft 400 thereof can drive the movable scroll 2 to eccentrically rotate, so that the compression chamber 22 between the movable scroll 2 and the fixed scroll 20 generates a volume change to compress the refrigerant.

The tail cap 11 includes a partition plate 5 disposed opposite to the mounting plate 100, an oil storage chamber 110 is formed between the partition plate 5 and the mounting plate 100, an air inlet 113 communicating with the oil storage chamber 110 is disposed on the tail cap 11, external refrigerant is introduced from the air inlet 113, and preferably, the air inlet 113 is disposed near an upper end of the tail cap 11 so that lubricating oil in the refrigerant is accumulated to a bottom of the oil storage chamber 110 by gravity.

Referring further to fig. 3, the mounting plate 100 has an oil hole 103 formed in a middle portion thereof, the oil hole 103 being open toward one end of the rotating shaft 40 and closed at the other end. In a preferred embodiment, the oil passage hole 103 is a blind hole, and in another embodiment, as shown in fig. 4, a sealing plate 104 is attached to the mounting plate 100 to separate the oil passage hole 103 from the oil reservoir 110. A connecting hole 105 is further provided between the oil passing hole 103 and the oil storage chamber 110, the connecting hole 105 communicates with the bottom of the oil storage chamber 110, as shown in fig. 5, a passage 106 is provided between the bottom of the mounting plate 100 and the tail cover 11, and the connecting hole 105 communicates with the inside of the passage 106. In this embodiment, the connection hole 105 is formed in the mounting plate 100, but in other embodiments, it may be a separate pipe connected between the oil passing hole 103 and the bottom of the oil storage chamber 110.

As shown in fig. 2, an oil passage communicating with the oil passage 103 is opened at the center of the rotating shaft 40, and the oil passage is used for conveying the lubricating oil in the oil storage chamber 110 to the inner chamber 10 a. In this embodiment, the oil path includes a central oil path 402 and an eccentric oil path 403 arranged eccentrically from the central oil path 402, and one end of the eccentric oil path 403 is communicated with the central oil path 402, and the other end extends to a front end surface 40a of the rotating shaft 40, on which the eccentric shaft 400 is arranged (see fig. 3).

When the rotating shaft 40 rotates, the lubricating oil in the eccentric oil path 403 is thrown out from the front end surface 40a of the rotating shaft 40 and generates suction force on the lubricating oil in the central oil path 402, so that the lubricating oil enters the central oil path 402 from the oil storage chamber 110 through the passage 106, the connecting hole 105 and the oil through hole 103 and finally flows out from the eccentric oil path 403, and since the outlet of the eccentric oil path 403 faces the third bearing 25, the thrown-out lubricating oil can contact and lubricate the third bearing 25. The lubricating oil flowing out of the eccentric oil passage 403 is collected at the bottom of the intermediate housing 10 by the first bearing 121, and the first bearing 121 can be lubricated by the lubricating oil flowing through the first bearing 121. An oil inlet passage 107 is provided at a bottom position between the intermediate housing 10 and the mounting housing 12, the oil inlet passage 107 communicates with the housing chamber 21, and the lubricating oil in the housing chamber 21 can be brought between the orbiting scroll 2 and the non-orbiting scroll 3 by the air flow when the orbiting scroll 2 rotates, thereby lubricating the orbiting scroll 2 and the non-orbiting scroll 20.

As shown in fig. 4, the second bearing 102 is mounted on the mounting hole 101a of the second mounting seat 101, and a gap 404 is formed between the end of the rotating shaft 40 and the mounting plate 100, and the gap 404 communicates with the mounting hole 101a, the center oil passage 402, and the oil passage 103, so that when the lubricating oil enters the center oil passage 402 from the oil passage 103, part of the lubricating oil enters the mounting hole 101a through the gap 404, thereby lubricating the second bearing 102 in the mounting hole 101 a.

The oil through hole 103 may also be connected to an oil pumping mechanism, which increases the suction force to the lubricating oil in the oil storage chamber 110.

As shown in fig. 5 and 6, in a preferred embodiment, a baffle plate 50 is disposed in the oil storage chamber 110, the baffle plate 50 divides the oil storage chamber 110 into an upper oil chamber 110a and a lower oil chamber 110b disposed up and down, and an oil passing passage 51 communicating the upper oil chamber 110a and the lower oil chamber 110b is disposed in the baffle plate 50. The lubricating oil in the refrigerant entering from the intake port 113 will first collect in the upper oil chamber 110a and flow from the oil passing passage 51 into the lower oil chamber 110 b. In this embodiment, the baffle 50 is connected to the partition 5 at one end and extends toward the mounting plate 100 at the other end, and is spaced apart from the mounting plate 100 by a predetermined distance, thereby forming the oil passing passage 51. The baffle 50 can keep the level of the lubricant in the lower oil chamber 110b stable, preventing the sucked refrigerant from carrying away the lubricant accumulated at the bottom again.

As shown in fig. 5, the tail cover 11 is further provided with a cover plate 111, a mounting cavity 112 for mounting electrical components such as a controller is formed between the cover plate 111 and the partition plate 5, and the electrical components are mounted on the partition plate 5. The partition plate 5 is further provided with a plurality of convex columns 52 extending into the upper oil chamber 110a, and the convex columns 52 are in a conical shape or a circular truncated cone shape with small end parts and large root parts. On one hand, after the refrigerant enters from the air inlet 113, the convex column 52 can block the lubricating oil in the refrigerant, so that the lubricating oil is separated from the refrigerant, adsorbed on the convex column 52 and finally gathered in the oil storage cavity 110; on the other hand, the convex column 52 can increase the heat dissipation area of the partition plate 5, improve the heat dissipation effect, and meanwhile, lubricating oil, refrigerant and the like can also take away part of heat when passing through the convex column 52, so that the heat dissipation performance is further improved, the heat dissipation of electric elements such as a controller and the like is facilitated, and the lasting and reliable work of the electric elements is ensured. The convex column 52 and the tail cover 11 are preferably made of a material with good heat dissipation performance, such as aluminum alloy.

When the horizontal scroll compressor of the present invention is in operation, the refrigerant entering from the air inlet 113 first enters the oil storage chamber 110, so that most of the lubricating oil contained therein is gathered in the oil storage chamber 110, and then the refrigerant containing a small amount of lubricating oil enters the middle housing 10 through the gas channel 108 (reference numeral is shown in fig. 7) arranged on the mounting plate 100, is compressed by the compression chamber 22, then is discharged from the exhaust hole 23, and finally is discharged from the exhaust port 130; the lubricating oil in the oil storage chamber 110 is sucked from the connecting hole 105, passes through the central oil passage 402, the eccentric oil passage 403, the gap 404 and the mounting hole 101a, enters the intermediate housing 10, is sucked into the compression chamber 22, and is discharged from the discharge hole 23, after being discharged from the discharge hole 23, a part of the lubricating oil is discharged from the horizontal scroll compressor together with the refrigerant through the discharge port 130, and the other part of the lubricating oil is retained in the cavity 131 of the front cover 13 and is collected at the bottom of the cavity 131 by gravity.

Since most of the lubricating oil is stored in the oil storage chamber 110, the amount of the lubricating oil accumulated in the intermediate housing 10 is reduced, the oil stirring loss when the rotor 4 rotates is greatly reduced, and the working efficiency is improved.

As shown in fig. 8, the cavity 131 and the oil storage cavity 110 may be connected by an oil pipe 7, and the oil pipe 7 may introduce the lubricating oil in the cavity 131 into the oil storage cavity 110 for recycling, and at the same time may increase the volume of the oil storage cavity 110 to a certain extent, further reduce the lubricating oil accumulated in the intermediate housing 10, and reduce the oil churning loss.

The horizontal scroll compressor at least has the following advantages:

It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a horizontal scroll compressor, its includes casing (1) and all sets up rotor (4), movable vortex (2) and quiet vortex (20) in casing (1), set up on casing (1) and supply air inlet (113) that the refrigerant let in and supply refrigerant exhaust gas vent (130), its characterized in that: casing (1) including middle casing (10) and with tail-hood (11) that middle casing (10) link to each other, middle casing (10) is provided with mounting panel (100), mounting panel (100) with form oil storage chamber (110) between tail-hood (11), air inlet (113) with oil storage chamber (110) communicate with each other, pivot (40) one end rotatable coupling of rotor (4) is in on mounting panel (100), the oil circuit has been seted up on pivot (40), seted up on mounting panel (100) with the communicating oil hole (103) of oil circuit, oil hole (103) with oil storage chamber (110) communicate with each other.

2. The horizontal scroll compressor according to claim 1, wherein: oil through hole (103) with be provided with connecting hole (105) between oil storage chamber (110), connecting hole (105) lower extreme extends to the bottom of oil storage chamber (110).

3. The horizontal scroll compressor according to claim 1, wherein: casing (1) is still including setting up baffle (50) in oil storage chamber (110), baffle (50) will oil storage chamber (110) are separated into upper oil chamber (110a) and lower oil chamber (110b), baffle (50) are provided with the intercommunication upper oil chamber (110a) with oil passing channel (51) of lower oil chamber (110 b).

4. A horizontal scroll compressor according to any one of claims 1 to 3 wherein: the tail cover (11) is provided with a plurality of convex columns (52) extending into the oil storage cavity (110).

5. The horizontal scroll compressor according to claim 4, wherein: and an electrical element is arranged on the tail cover (11).

6. A horizontal scroll compressor according to any one of claims 1 to 3 wherein: the oil-way joint is characterized in that a mounting hole (101a) is formed in the mounting plate (100), a second bearing (102) is arranged in the mounting hole (101a), the rotating shaft (40) is connected with the second bearing (102) in a matching mode, and a gap (404) communicated with the mounting hole (101a), the oil through hole (103) and the oil way is formed between the rotating shaft (40) and the mounting plate (100).

7. A horizontal scroll compressor according to any one of claims 1 to 3 wherein: the rotating shaft (40) comprises a front end face (40a) and an eccentric shaft (400) arranged on the front end face (40a), and the oil path is communicated to the front end face (40 a).

8. The horizontal scroll compressor according to claim 7, wherein: and a third bearing (25) is arranged between the eccentric shaft (400) and the movable vortex (2), and the oil path is opposite to the third bearing (25).

9. A horizontal scroll compressor according to any one of claims 1 to 3 wherein: the vortex-type vortex compressor further comprises a front cover (13) connected with the mounting shell (12), a containing cavity (21) for installing the movable vortex (2) and the fixed vortex (20) is formed between the mounting shell (12) and the front cover (13), and an inner cavity (10a) for communicating the containing cavity (21) with the middle shell (10) is formed in the mounting shell (12).

10. The horizontal scroll compressor according to claim 9, wherein: the horizontal scroll compressor is characterized in that a cavity (131) is arranged between the front cover (13) and the fixed scroll (20), the exhaust port (130) is formed in the front cover (13) and communicated with the cavity (131), and the horizontal scroll compressor further comprises an oil pipe (7) communicated with the cavity (131) and the oil storage cavity (110).