CN119435392A

CN119435392A - Pump assembly for compressor and compressor

Info

Publication number: CN119435392A
Application number: CN202310956099.1A
Authority: CN
Inventors: 范少稳; 王飞; 张均岩; 杨文钧
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2025-02-14

Abstract

The application relates to the technical field of refrigeration equipment, and discloses a pump body assembly for a compressor. The end of the crankshaft extends to an oil pool at the bottom of the compressor shell, the crankshaft is provided with a first oil path communicated with the oil pool, and the first cylinder is provided with a first air suction port. The second cylinder is provided with a second suction port. The middle partition plate is provided with a second oil path channel, a first end of the second oil path channel is communicated with the first oil path channel, and a second end of the second oil path channel is communicated with the first air suction port and the second air suction port. The first oil path channel and the second oil path channel are communicated to form an internal oil path circulation channel of the pump body assembly, a pressure difference inside the compressor shell is utilized, a pressure reducing device is arranged on the second oil path channel, oil in the oil pool is stably drained to the first air suction port and the second air suction port, and then the oil flows to moving parts of the pump body assembly, so that reliable lubrication of the moving parts is guaranteed. The application also discloses a compressor.

Description

Pump body assembly for compressor and compressor

Technical Field

The application relates to the technical field of refrigeration equipment, in particular to a pump body assembly for a compressor and the compressor.

Background

At present, in the running process of the compressor, moving parts of the pump body assembly, such as rollers and sliding sheets, are mainly lubricated through the suction oil so as to ensure the normal movement of the moving parts, such as the rollers, the sliding sheets and the like. When the compressor operates in a low suction amount or low temperature state, the solubility of oil and refrigerant in the compressor is low, the suction oil quantity is rapidly reduced, the situation that the roller and the sliding vane are in oil shortage lubrication and wear easily occurs is caused, and the reliability of the compressor is affected. In the related art, an external circulation flow path consisting of an oil-gas separator, an oil storage device, a pressure reducing valve and the like is additionally arranged outside the compressor, so that oil discharged from an exhaust port of the compressor flows back into the compressor from the outside of the compressor, and lubrication of moving parts in the compressor is ensured.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

in the related art, by adding an external circulation flow path of oil outside the compressor, the oil storage capacity of the oil storage device depends on the oil separation efficiency of the oil-gas separator, and the oil storage capacity of the oil storage device is possibly small under the condition of low oil separation efficiency, so that the reliable lubrication of the moving parts of the pump body assembly cannot be ensured, and the reliability of the compressor is affected.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a pump body subassembly and compressor for compressor, pump body subassembly for compressor includes the bent axle, first cylinder, second cylinder and intermediate baffle, through set up the first oil circuit passageway that communicates in the oil bath of compressor casing bottom at the bent axle, the intermediate baffle sets up the second oil circuit passageway that has pressure relief device, and make first oil circuit passageway and second oil circuit passageway be linked together and constitute pump body subassembly's inside oil circuit circulation passageway, utilize the inside pressure differential of compressor casing, drain the oil of the oil bath of compressor casing bottom to the moving part of pump body subassembly steadily, guarantee the reliability lubrication of the moving part of pump body subassembly, the reliability of reinforcing compressor.

In some embodiments, a pump body assembly for a compressor includes a crankshaft, a first cylinder, a second cylinder, and an intermediate diaphragm. The crankshaft end extends to the oil sump at the bottom of the compressor shell, and the crankshaft is provided with a first oil passage which is communicated with the oil sump. The first cylinder sleeve is arranged on the crankshaft, and the first cylinder is provided with a first air suction port. The second cylinder sleeve is arranged on the crankshaft, and the second cylinder is provided with a second air suction port. The middle partition board is sleeved on the crankshaft, the middle partition board is arranged between the first cylinder and the second cylinder, the middle partition board is provided with a second oil path channel, the first end of the second oil path channel is communicated with the first oil path channel, the second end of the second oil path channel is communicated with the first air suction port and the second air suction port, and the second oil path channel is provided with a pressure reducing device.

In some alternative embodiments, the pressure relief device includes a first pressure relief valve. The first pressure reducing valve is arranged at the communication position between the second end of the second oil path and the first air suction port.

In some alternative embodiments, the pressure relief device includes a second pressure relief valve. The second pressure reducing valve is arranged at the communication position of the second end of the second oil path and the second air suction port.

In some alternative embodiments, the pressure relief device includes a first pressure relief valve and a second pressure relief valve. The first pressure reducing valve is arranged at the communication position between the second end of the second oil path and the first air suction port. The second pressure reducing valve is arranged at the communication position of the second end of the second oil path and the second air suction port.

In some alternative embodiments, where the pressure relief device includes a first pressure relief valve, the first cylinder is provided with a first pressure relief groove and a first throttle orifice, and a first end of the first throttle orifice is in communication with the first suction port. The end face of the middle partition plate, which is contacted with the first cylinder, is provided with a second decompression groove and a second throttling micropore communicated with the second decompression groove. The second throttling micropore is correspondingly communicated with the second end of the first throttling micropore to form a first throttling micro-channel, the second pressure reducing groove and the first pressure reducing groove form a first pressure reducing valve containing cavity, the first pressure reducing valve containing cavity is communicated with the second oil channel, and the first pressure reducing valve is arranged in the first pressure reducing valve containing cavity.

In some alternative embodiments, in the case where the pressure reducing device includes a second pressure reducing valve, the second cylinder is provided with a third pressure reducing groove and a third throttle micro hole, and a first end of the third throttle micro hole communicates with the second suction port. The end face of the middle partition plate, which is contacted with the second cylinder, is provided with a fourth decompression groove and a fourth throttling micropore communicated with the fourth decompression groove. The second end of the second throttling micropore is correspondingly communicated with the second end of the third throttling micropore to form a second throttling micro-channel, the second pressure reducing groove and the third pressure reducing groove form a second pressure reducing valve containing cavity, the second pressure reducing valve containing cavity is communicated with the second oil channel, and the second pressure reducing valve is arranged in the second pressure reducing valve containing cavity.

In some alternative embodiments, the intermediate diaphragm includes a radially disposed diaphragm inner bore and an axially disposed diaphragm communication bore, wherein a first end of the diaphragm inner bore communicates with the diaphragm communication bore to form a second oil passage, a second end communicates with the first oil passage, and a first end of the diaphragm communication bore communicates with the second relief groove, and a second end of the diaphragm communication bore communicates with the fourth relief groove.

In some alternative embodiments, the crankshaft includes a rod body and first and second eccentric portions disposed on the rod body. The pump body assembly further comprises a first roller and a second roller, and the first roller and the second roller are respectively sleeved on the outer sides of the first eccentric part and the second eccentric part. The first cylinder, the first roller, the second cylinder, the second roller and the middle partition plate are enclosed to form an oil guiding and storing cavity, the second end of the inner hole of the partition plate is communicated with the oil guiding and storing cavity, and the oil guiding and storing cavity is communicated with the first oil path channel.

In some alternative embodiments, the crankshaft includes an axially disposed crankshaft bore disposed in the rod body and a radially disposed crankshaft communication hole. The first end of the inner hole of the crankshaft is communicated with the crankshaft communication hole to form a first oil path channel, the second end of the inner hole of the crankshaft is communicated with an oil pool at the bottom of the compressor shell, and the crankshaft communication hole is communicated with the oil guiding and storing cavity.

In some alternative embodiments, the pump body assembly further comprises an oil guide. The oil guide is arranged in the inner hole of the crankshaft and used for guiding oil in an oil pool at the bottom of the compressor shell to the first oil path.

In some alternative embodiments, the oil guide has a first end located at a second end of the crankshaft bore and a second end located at the crankshaft communication hole.

In some embodiments, the compressor includes a pump body assembly as described above for the compressor.

The pump body assembly for the compressor and the compressor provided by the embodiment of the disclosure can realize the following technical effects:

The pump body assembly for the compressor provided by the embodiment of the disclosure comprises a crankshaft, a first cylinder, a second cylinder and an intermediate baffle. The crankshaft end extends to the oil pool at the bottom of the compressor shell, and the crankshaft is provided with a first oil path which is communicated with the oil pool and used for draining oil in the oil pool at the bottom of the compressor shell to a moving part of the pump body assembly through the first oil path. The first cylinder sleeve is arranged on the crankshaft, and the first cylinder is provided with a first air suction port. The second cylinder sleeve is arranged on the crankshaft, and the second cylinder is provided with a second air suction port. The middle partition board is sleeved on the crankshaft, the middle partition board is arranged between the first cylinder and the second cylinder, the middle partition board is provided with a second oil path channel, the first end of the second oil path channel is communicated with the first oil path channel, and the second end of the second oil path channel is communicated with the first air suction port and the second air suction port. Through set up pressure relief device at the second oil circuit passageway, and make first oil circuit passageway and second oil circuit passageway be linked together and constitute the inside oil circuit circulation channel of pump body subassembly, utilize the inside pressure differential of compressor casing, with the oil of the oil pool of compressor casing bottom flow to first induction port and second induction port steadily, then flow to other moving parts of pump body subassembly again to guarantee the reliability lubrication of the moving parts of pump body subassembly, strengthen the reliability of compressor.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic view of a compressor provided in an embodiment of the present disclosure;

FIG. 2 is a partially enlarged schematic illustration of the region X in FIG. 1;

FIG. 3 is a schematic view of a first cylinder in a pump body assembly for a compressor according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a second cylinder in a pump body assembly for a compressor according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of an intermediate diaphragm in a pump body assembly for a compressor according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a crankshaft in a pump block assembly for a compressor provided in an embodiment of the present disclosure;

fig. 7 is an enlarged partial view of the Y region of fig. 1, in which the direction of the dotted arrow is a schematic view of the flow direction of the oil inside the pump body assembly.

Reference numerals:

10, a crankshaft, 11, a rod body, 111, a crankshaft inner hole, 112, a crankshaft communication hole, 12, a first eccentric part, 13, a second eccentric part and 14, an oil guide;

20 parts of a first cylinder, 21 parts of a first air suction port, 22 parts of a first throttling decompression groove and 23 parts of a first throttling micropore;

30 parts of a second cylinder, 31 parts of a second air suction port, 32 parts of a third section of decompression groove and 33 parts of a third throttling micropore;

40, an intermediate baffle, 41, a baffle inner hole, 42, a baffle communication hole, 43, a second decompression groove, 44, a second throttling micropore, 45, a fourth decompression groove and 46, a fourth throttling micropore;

51, a first throttling micro-channel, 52, a second throttling micro-channel;

61 a first roller and 62 a second roller.

71 A first pressure reducing valve 72 a second pressure reducing valve;

80, an oil guiding and storing cavity;

91 of a compressor shell and 92 of an oil pool.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged where appropriate in order to describe the presently disclosed embodiments. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, the term "coupled" may be a fixed connection, a removable connection, or a unitary construction, may be a mechanical connection, or an electrical connection, may be a direct connection, or may be an indirect connection via an intermediary, or may be an internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents A or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, A and/or B, represent A or B, or three relationships of A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

The embodiment of the disclosure provides a pump body assembly and compressor for compressor, pump body assembly for compressor includes bent axle 10, first cylinder 20, second cylinder 30 and intermediate baffle 40, through set up the first oil circuit passageway that communicates in the oil sump 92 of compressor casing 91 bottom at bent axle 10, intermediate baffle 40 sets up the second oil circuit passageway that has pressure relief device, and make first oil circuit passageway and second oil circuit passageway be linked together and constitute the inside oil circuit circulation passageway of pump body assembly, utilize the inside pressure differential of compressor casing 91, drain the oil of the oil sump 92 of compressor casing 91 bottom to the moving part of pump body assembly steadily, guarantee the reliability lubrication of the moving part of pump body assembly, strengthen the reliability of compressor.

As shown in connection with fig. 1-6, embodiments of the present disclosure provide a pump body assembly for a compressor, including a crankshaft 10, a first cylinder 20, a second cylinder 30, and an intermediate diaphragm 40. The end of the crankshaft 10 extends to an oil pool 92 at the bottom of the compressor housing 91, and the crankshaft 10 is provided with a first oil passage that communicates with the oil pool 92. The first cylinder 20 is sleeved on the crankshaft 10, and the first cylinder 20 is provided with a first air suction port 21. The second cylinder 30 is fitted over the crankshaft 10, and the second cylinder 30 is provided with a second intake port 31. The middle partition plate 40 is sleeved on the crankshaft 10, the middle partition plate 40 is arranged between the first cylinder 20 and the second cylinder 30, the middle partition plate 40 is provided with a second oil path channel, a first end of the second oil path channel is communicated with the first oil path channel, a second end of the second oil path channel is communicated with the first air suction port 21 and the second air suction port 31, and a pressure reducing device is arranged in the second oil path channel.

The pump body assembly for a compressor provided in the embodiment of the present disclosure includes a crankshaft 10, a first cylinder 20, a second cylinder 30, and an intermediate partition 40. The end of the crankshaft 10 extends to an oil pool 92 at the bottom of the compressor housing 91, and the crankshaft 10 is provided with a first oil passage communicated with the oil pool 92 for draining oil of the oil pool 92 at the bottom of the compressor housing 91 to a moving part of the pump body assembly through the first oil passage. The first cylinder 20 is sleeved on the crankshaft 10, and the first cylinder 20 is provided with a first air suction port 21. The second cylinder 30 is fitted over the crankshaft 10, and the second cylinder 30 is provided with a second intake port 31. The middle partition plate 40 is sleeved on the crankshaft 10, the middle partition plate 40 is arranged between the first cylinder 20 and the second cylinder 30, the middle partition plate 40 is provided with a second oil path channel, a first end of the second oil path channel is communicated with the first oil path channel, and a second end of the second oil path channel is communicated with the first air suction port 21 and the second air suction port 31. The first oil path channel and the second oil path channel are communicated to form an internal oil path circulation channel of the pump body assembly, the pressure difference inside the compressor shell 91 is utilized, the pressure reducing device is arranged on the second oil path channel, oil in an oil pool 92 at the bottom of the compressor shell 91 is stably drained to the first air suction port 21 and the second air suction port 31, and then flows to other moving parts of the pump body assembly, so that the reliability lubrication of the moving parts of the pump body assembly is ensured, and the reliability of the compressor is enhanced.

In some alternative embodiments, the pressure relief device includes a first pressure relief valve 71. The first pressure reducing valve 71 is provided at a position where the second end of the second oil passage communicates with the first air inlet 21.

So set up, set up the second end that leads to first suction port 21 with first relief pressure valve 71 in the second oil circuit, first oil circuit passageway is linked together with the second oil circuit passageway like this and is constituteed the inside oil circuit circulation channel of pump body subassembly, utilize the inside pressure differential of compressor casing 91, because the effect of first relief pressure valve 71 can be with the oil of the oil pool 92 of compressor casing 91 bottom steadily drainage to first suction port 21, prevent that the oil of the oil pool 92 of compressor casing 91 bottom from appearing the splash in first suction port 21, then flow to other moving parts of pump body subassembly, thereby guarantee the reliable lubrication of the moving parts of pump body subassembly.

In some alternative embodiments, the pressure relief device includes a second pressure relief valve 72. The second pressure reducing valve 72 is provided at a position where the second end of the second oil passage communicates with the second suction port 31.

So set up, set up the second relief pressure valve 72 in the second end that the second oil circuit leads to and the intercommunication department of second induction port 31, first oil circuit passageway is linked together with the second oil circuit passageway like this and is constituteed the inside oil circuit circulation channel of pump body subassembly, utilize the inside pressure differential of compressor casing 91, because the effect of second relief pressure valve 72 can be with the oil of the oil pool 92 of compressor casing 91 bottom steadily drainage to second induction port 31, prevent that the oil of the oil pool 92 of compressor casing 91 bottom from appearing the splash in second induction port 31, then flow to other moving parts of pump body subassembly, thereby guarantee the reliable lubrication of the moving parts of pump body subassembly.

In some alternative embodiments, the pressure relief device includes a first pressure relief valve 71 and a second pressure relief valve 72. The first pressure reducing valve 71 is provided at a position where the second end of the second oil passage communicates with the first air inlet 21. The second pressure reducing valve 72 is provided at a position where the second end of the second oil passage communicates with the second suction port 31.

The arrangement is that the first pressure reducing valve 71 and the second pressure reducing valve 72 are respectively arranged at the connection position of the second end of the second oil passage and the first air suction port 21 and the second air suction port 31, as shown in fig. 1 and 2, the first oil passage and the second oil passage are communicated to form an internal oil passage circulation passage of the pump body assembly, and the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably drained to the first air suction port 21 and the second air suction port 31 due to the action of the first pressure reducing valve 71 and the second pressure reducing valve 72 by utilizing the pressure difference inside the compressor housing 91, so that the oil in the oil pool 92 at the bottom of the compressor housing 91 is prevented from splashing in the first air suction port 21 and the second air suction port 31 and then flows to other moving parts of the pump body assembly, and the reliable lubrication of the moving parts of the pump body assembly is ensured.

In some alternative embodiments, in the case where the pressure reducing means includes the first pressure reducing valve 71, the first cylinder 20 is provided with the first pressure reducing groove and the first throttle micro hole 23, and the first end of the first throttle micro hole 23 communicates with the first suction port 21. The end surface of the intermediate partition plate 40 that contacts the first cylinder 20 is provided with a second relief groove 43 and a second throttle micro hole 44 that communicates with the second relief groove 43. The second throttling micro-hole 44 is correspondingly communicated with the second end of the first throttling micro-hole 23 to form a first throttling micro-channel 51, the second pressure reducing groove 43 and the first pressure reducing groove form a first pressure reducing valve containing cavity, the first pressure reducing valve containing cavity is communicated with the second oil path channel, and the first pressure reducing valve 71 is arranged in the first pressure reducing valve containing cavity.

As shown in fig. 3 and 5, in the case where the pressure reducing device includes the first pressure reducing valve 71, that is, the first pressure reducing valve 71 is provided at a position where the second end of the second oil passage communicates with the first intake port 21. The first cylinder 20 is provided with a first decompression groove and a first throttle micro hole 23, and a first end of the first throttle micro hole 23 communicates with the first suction port 21. The end surface of the intermediate partition plate 40 that contacts the first cylinder 20 is provided with a second relief groove 43 and a second throttle micro-hole 44 that communicates with the second relief groove 43, where the second throttle micro-hole 44 is connected to the bottom of the second relief groove 43. By forming the first throttling micro-channel 51 by the second throttling micro-hole 44 correspondingly communicating with the second end of the first throttling micro-hole 23, the first pressure reducing valve accommodating cavity is formed by the second pressure reducing groove 43 and the first pressure reducing groove, and the first pressure reducing valve accommodating cavity is communicated with the second oil path channel, so that the first pressure reducing valve accommodating cavity and the first throttling micro-channel 51 are communicated with the second oil path channel, and oil of the oil pool 92 at the bottom of the compressor shell 91 can be drained to the first air suction port 21 through the second oil path channel. Further, the first pressure reducing valve 71 is provided in the first pressure reducing valve chamber, and the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably drained to the first air inlet 21 through the second oil passage by the first pressure reducing valve 71.

In some alternative embodiments, the first relief valve 71 includes a first resilient member and a first blocking member. The first elastic piece is connected to the first blocking piece. Here the first blocking member acts as a first elastic member to communicate or block the first throttling micro-channel 51 with the partition communicating hole 42.

In some alternative embodiments, in the case where the pressure reducing means includes the second pressure reducing valve 72, the second cylinder 30 is provided with the third pressure reducing groove and the third throttle micro hole 33, and the first end of the third throttle micro hole 33 communicates with the second suction port 31. The end surface of the intermediate partition plate 40 in contact with the second cylinder 30 is provided with a fourth decompression groove 42 and a fourth throttle micro hole 46 communicating with the fourth decompression groove 42. The fourth throttling micro-hole 46 is correspondingly communicated with the second end of the third throttling micro-hole 33 to form a second throttling micro-channel 52, the fourth pressure reducing groove 42 and the third pressure reducing groove form a second pressure reducing valve containing cavity, the second pressure reducing valve containing cavity is communicated with the second oil path channel, and the second pressure reducing valve 72 is arranged in the second pressure reducing valve containing cavity.

As shown in fig. 4 and 5, in the case where the pressure reducing device includes the second pressure reducing valve 72, that is, the second pressure reducing valve 72 is provided at a position where the second end of the second oil passage communicates with the first air intake port 21. The second cylinder 30 is provided with a third decompression groove and a third throttle micro hole 33, and a first end of the third throttle micro hole 33 communicates with the second suction port 31. The end surface of the intermediate partition plate 40 in contact with the second cylinder 30 is provided with a fourth decompression groove 42 and a fourth throttle micro hole 46 communicating with the fourth decompression groove 42, where the fourth throttle micro hole 46 is connected to the bottom of the fourth decompression groove 42. By forming the second throttling micro-channel 52 by the fourth throttling micro-hole 46 correspondingly communicating with the second end of the third throttling micro-hole 33, the fourth pressure reducing groove 42 and the third pressure reducing groove form a second pressure reducing valve containing cavity, and the second pressure reducing valve containing cavity is communicated with the second oil path channel, so that the second pressure reducing valve containing cavity and the second throttling micro-channel 52 are communicated with the second oil path channel, and oil of the oil pool 92 at the bottom of the compressor shell 91 can be drained to the second air suction port 31 through the second oil path channel. Further, the second pressure reducing valve 72 is disposed in the second pressure reducing valve chamber, and oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably drained to the second air inlet 31 through the second oil path under the action of the second pressure reducing valve 72.

In some alternative embodiments, second relief valve 72 includes a second resilient member and a second blocking member. The second elastic piece is connected to the second blocking piece. The second blocking member acts here to place the second throttling microchannel 52 in communication with or blocked from the baffle orifice 42 by the action of the second resilient member.

In some alternative embodiments, intermediate diaphragm 40 includes a radially disposed diaphragm bore 41 and an axially disposed diaphragm communication hole 42. Wherein, the first end of the diaphragm inner hole 41 is communicated with the diaphragm communication hole 42 to form a second oil path, the second end is communicated with the first oil path, the first end of the diaphragm communication hole 42 is communicated with the second decompression groove 43, and the second end of the diaphragm communication hole 42 is communicated with the fourth decompression groove 42.

So arranged, the intermediate partition 40 includes a radially disposed partition inner bore 41 and an axially disposed partition communication hole 42, as shown in fig. 5. Here, the separator inner hole 41 has a first end communicating with the separator communication hole 42 to form a second oil passage, and a second end communicating with the first oil passage so that the first oil passage communicates with the second oil passage. Further, the first end and the second end of the partition communication hole 42 are respectively communicated with the second relief groove 43 and the fourth relief groove 42. That is, both ends of the diaphragm communication hole 42 are respectively communicated with the first relief valve accommodating chamber and the second relief valve accommodating chamber, so that the first oil path is communicated with the second oil path, and then the oil of the oil pool 92 at the bottom of the compressor housing 91 is stably drained to the first suction port 21 and the second suction port 31 through the first throttle micro-path 51 and the second throttle micro-path 52.

In some alternative embodiments, crankshaft 10 includes a rod body 11 and first and second eccentric portions 12, 13 disposed on rod body 11. The pump body assembly further comprises a first roller 61 and a second roller 62, and the first roller 61 and the second roller 62 are respectively sleeved on the outer sides of the first eccentric part 12 and the second eccentric part 13. Wherein, the first cylinder 20, the first roller 61, the second cylinder 30, the second roller 62 and the middle partition plate 40 enclose to form an oil guiding and storing cavity 80, and the second end of the inner hole 41 of the partition plate is communicated with the oil guiding and storing cavity 80, and the oil guiding and storing cavity 80 is communicated with the first oil path channel.

As shown in fig. 1 and 6, the crankshaft 10 includes a rod body 11 and first and second eccentric portions 12 and 13 provided to the rod body 11. The pump body assembly further comprises a first roller 61 and a second roller 62, and the first roller 61 and the second roller 62 are respectively sleeved on the outer sides of the first eccentric part 12 and the second eccentric part 13. Here, the first cylinder 20, the first roller 61, the second cylinder 30, the second roller 62 and the intermediate partition 40 are enclosed to form an oil introduction and storage chamber 80, and the second end of the inner hole 41 of the partition is disposed to communicate with the oil introduction and storage chamber 80, and the oil introduction and storage chamber 80 is communicated with the first oil passage, so that the oil introduction and storage chamber 80 is respectively communicated with the first oil passage and the second oil passage, so that the first oil passage and the second oil passage are communicated. Further, the oil of the oil pool 92 at the bottom of the compressor housing 91 drained from the first oil passage may be stored in the oil introduction and storage chamber 80 and then transferred to other moving parts of the pump body assembly through the second oil passage, thereby ensuring reliable lubrication of the moving parts of the pump body assembly.

In some alternative embodiments, the crankshaft 10 includes an axially disposed crankshaft bore 111 provided to the rod body 11 and a radially disposed crankshaft communication hole 112. The first end of the crankshaft inner hole 111 is communicated with the crankshaft communication hole 112 to form a first oil path channel, the second end of the crankshaft inner hole is communicated with the oil pool 92 at the bottom of the compressor shell 91, and the crankshaft communication hole 112 is communicated with the oil guiding and storing cavity 80.

So arranged, the crankshaft 10 includes an axially disposed crankshaft inner bore 111 provided in the rod body 11 and a radially disposed crankshaft communication hole 112, as shown in fig. 6. Here, the first end of the crankshaft inner hole 111 is connected to the crankshaft communication hole 112 to form a first oil path, the second end is connected to the oil sump 92 at the bottom of the compressor housing 91, and the crankshaft communication hole 112 is connected to the oil guiding and storing chamber 80, that is, the second oil path is connected to the oil sump 92 at the bottom of the compressor housing 91, so as to drain the oil at the bottom of the compressor housing 91 to the oil guiding and storing chamber 80 through the first oil path, and then to be transferred to other moving parts of the pump body assembly through the second oil path.

In some alternative embodiments, the pump body assembly further includes an oil guide 14. The oil guide 14 is disposed in the crankshaft inner hole 111, and is used for guiding the oil in the oil pool 92 at the bottom of the compressor housing 91 to the first oil path.

The pump body assembly for a compressor provided in the embodiment of the present disclosure further includes an oil guide 14, and the oil guide 14 is disposed in the crankshaft inner hole 111, as shown in fig. 1. The oil guide 14 can guide the oil of the oil pool 92 at the bottom of the compressor housing 91 to the first oil path more conveniently, then guide the oil to the oil guiding and storing cavity 80 through the first oil path, and then convey the oil to other moving parts of the pump body assembly through the second oil path.

In some alternative embodiments, oil guide 14 comprises an oil guide plate. The oil guide plate has a spiral structure and is disposed along the length direction of the crankshaft inner hole 111.

In some alternative embodiments, the oil guide 14 has a first end located at a second end of the crankshaft bore 111 and a second end located at the crankshaft communication hole 112.

So set up, set up the first end that is located the crank shaft hole 111 with the oil guide 14 and hold, the second end is located the crank shaft intercommunicating pore 112, oil guide 14 can be with the oil of the oil pool 92 of compressor housing 91 bottom direct water conservancy diversion to crank shaft intercommunicating pore 112 like this, then water conservancy diversion to draw oily oil storage chamber 80 through crank shaft intercommunicating pore 112, make the oil of the oil pool 92 of compressor housing 91 bottom more easily water conservancy diversion to draw oily oil storage chamber 80, then carry other moving parts of pump body subassembly through the second oil circuit passageway again.

The embodiment of the disclosure also provides a compressor. The compressor comprises the pump body assembly for the compressor.

The embodiment of the disclosure also provides a compressor, which comprises the pump body assembly for the compressor, as shown in fig. 1. The compressor further comprises a compressor shell 91, an oil pool 92 is arranged at the bottom of the compressor shell 91, the end part of the crankshaft 10 of the pump body assembly extends to the oil pool 92 at the bottom of the compressor shell 91, and oil in the oil pool 92 at the bottom of the compressor shell 91 is drained to a moving part of the pump body assembly through a first oil path channel arranged on the crankshaft 10, so that reliable lubrication of the moving part of the pump body assembly is guaranteed.

During operation of the compressor, the pressure inside the compressor housing 91, that is, the pressure of the oil pool 92 applied to the bottom of the compressor housing 91, is greater than the pressure of the first suction port 21 of the first cylinder 20 and the second suction port 31 of the second cylinder 30. In the operation process of the compressor, the flow path of the oil in the pump body assembly is shown in fig. 7, and the direction of the dotted arrow in fig. 7 is the flow direction of the oil in the pump body assembly. During rotation of the crankshaft 10, oil in the oil pool 92 at the bottom of the compressor housing 91 is lifted up by the oil guide 14, and the lifted up oil is conveyed to the crankshaft communication hole 112 along the crankshaft inner hole 111, and then enters the oil introduction and storage chamber 80 through the crankshaft communication hole 112. Then enters the partition inner hole 41 from the oil introduction and storage chamber 80, then flows to the partition communication hole 42 through the partition inner hole 41, and is split into the first relief valve accommodating chamber and the second relief valve accommodating chamber by the partition communication hole 42. Here, the oil drained thereto, after overcoming the elastic force of the first elastic member of the first relief valve 71 and the second elastic member of the second relief valve 72, the first blocking member of the first relief valve 71 and the second blocking member of the second relief valve 72 communicate the first throttle micro-passage 51 and the second throttle micro-passage 52 with the diaphragm communication hole 42, respectively, so that the oil enters the first relief valve accommodating chamber and the second relief valve accommodating chamber, enters the first suction port 21 and the second suction port 31 from the first throttle micro-passage 51 and the second throttle micro-passage 52, respectively, and then flows to other moving parts of the pump body assembly, thereby ensuring reliable lubrication of the moving parts of the pump body assembly and increasing reliability of the compressor.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A pump assembly for a compressor, comprising:

A crankshaft, an end of which extends to the oil pool at the bottom of the compressor housing, and the crankshaft is provided with a first oil passage, the first oil passage being connected to the oil pool;

A first cylinder is sleeved on the crankshaft, and the first cylinder is provided with a first intake port;

A second cylinder is sleeved on the crankshaft, and the second cylinder is provided with a second intake port;

The middle partition is sleeved on the crankshaft, the middle partition is arranged between the first cylinder and the second cylinder, the middle partition is provided with a second oil passage, and the first end of the second oil passage is connected to the first oil passage, and the second end is connected to the first air intake port and the second air intake port.

Wherein, the second oil passage is provided with a pressure reducing device.

2. The pump assembly according to claim 1, wherein the pressure reducing device comprises:

a first pressure reducing valve, disposed at a connection point between the second end of the second oil passage and the first air intake port, and/or

The second pressure reducing valve is arranged at the connection point between the second end of the second oil passage and the second air intake port.

3. The pump assembly according to claim 2, characterized in that:

In the case where the pressure reducing device includes a first pressure reducing valve, the first cylinder is provided with a first pressure reducing groove and a first throttling micro-hole, and a first end of the first throttling micro-hole is connected to the first air intake port;

The end surface of the middle partition plate in contact with the first cylinder is provided with a second pressure relief groove and a second throttling micro-hole connected to the second pressure relief groove.

Among them, the second throttling microhole is connected to the second end of the first throttling microhole to form a first throttling microchannel, the second pressure reducing groove and the first pressure reducing groove constitute a first pressure reducing valve cavity, the first pressure reducing valve cavity is connected to the second oil channel, and the first pressure reducing valve is arranged in the first pressure reducing valve cavity.

4. The pump assembly according to claim 3, characterized in that:

In the case where the pressure reducing device includes a second pressure reducing valve, the second cylinder is provided with a third pressure reducing groove and a third throttling micro-hole, and the first end of the third throttling micro-hole is connected to the second air intake port;

The end surface of the middle partition plate in contact with the second cylinder is provided with a fourth pressure relief groove and a fourth throttling micro-hole connected to the fourth pressure relief groove.

Among them, the fourth throttling microhole is connected to the second end of the third throttling microhole to form a second throttling microchannel, the fourth pressure reducing groove and the third pressure reducing groove constitute a second pressure reducing valve cavity, the second pressure reducing valve cavity is connected to the second oil channel, and the second pressure reducing valve is arranged in the second pressure reducing valve cavity.

5. The pump assembly according to claim 4, characterized in that:

The middle partition includes a partition inner hole arranged radially and a partition connecting hole arranged axially.

Among them, the first end of the inner hole of the partition is connected to the partition connecting hole to form a second oil passage, and the second end is connected to the first oil passage. In addition, the first end of the partition connecting hole is connected to the second pressure reducing groove, and the second end of the partition connecting hole is connected to the fourth pressure reducing groove.

6. The pump assembly according to claim 5, characterized in that:

The crankshaft includes a rod body and a first eccentric portion and a second eccentric portion arranged on the rod body;

The pump body assembly further includes a first roller and a second roller, wherein the first roller and the second roller are respectively sleeved on the outer sides of the first eccentric portion and the second eccentric portion.

The first cylinder, the first roller, the second cylinder, the second roller and the middle partition form an oil inlet storage chamber, and the second end of the inner hole of the partition is connected to the oil inlet storage chamber, and the oil inlet storage chamber is connected to the first oil passage.

7. The pump assembly according to claim 6, characterized in that:

The crankshaft includes an axially arranged crankshaft inner hole and a radially arranged crankshaft communicating hole arranged on the rod body.

The first end of the crankshaft inner hole is connected to the crankshaft connecting hole to form a first oil passage, and the second end is connected to the oil pool at the bottom of the compressor housing, and the crankshaft connecting hole is connected to the oil inlet and oil storage chamber.

8. The pump assembly according to claim 7, further comprising:

The oil guide member is arranged in the inner hole of the crankshaft and is used for guiding the oil in the oil pool at the bottom of the compressor housing to the first oil channel.

9. The pump assembly according to claim 8, characterized in that:

The first end of the oil guide member is located at the second end of the crankshaft inner hole, and the second end is located at the crankshaft communicating hole.

10. A compressor, characterized by comprising the pump body assembly for a compressor according to any one of claims 1 to 9.