CN109026693B

CN109026693B - Pump body assembly, compressor and air conditioner

Info

Publication number: CN109026693B
Application number: CN201811012720.4A
Authority: CN
Inventors: 魏会军; 杨国蟒; 徐嘉; 邓丽颖; 梁社兵; 万鹏凯; 刘喜兴; 刘国良
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2023-10-03
Anticipated expiration: 2038-08-31
Also published as: EP3779198A4; WO2020042433A1; EP3779198A1; CN109026693A; JP2021529280A; US20210199113A1

Abstract

The application provides a pump body assembly, a compressor and an air conditioner. The pump body assembly comprises an air cylinder assembly which is respectively connected with the first flange and the second flange, and the air cylinder assembly is positioned between the first flange and the second flange; the rotating shaft sequentially penetrates through the first flange, the air cylinder assembly and the second flange, and a sliding vane groove is formed in the rotating shaft; the sliding vane is arranged in the sliding vane groove and matched with the cylinder assembly to form a working cavity in the cylinder assembly; the first flange is provided with an exhaust channel communicated with the working cavity, the second flange is provided with an air flow balancing part, when the working cavity is in an exhaust state, air flow in the cylinder assembly forms force with moment F at the air flow balancing part and is applied to one end of the sliding vane far away from the exhaust channel, so that the sliding vane does not incline in the working process of the working cavity. Therefore, the overturning condition of the sliding vane is avoided, the reliable operation of the compressor is ensured, and the vibration and noise of the compressor are effectively reduced.

Description

Pump body assembly, compressor and air conditioner

Technical Field

The application relates to the technical field of air conditioner equipment, in particular to a pump body assembly, a compressor and an air conditioner.

Background

In the prior art, in order to ensure uniform exhaust speed, the exhaust ports of the compressor prototype are generally arranged in a staggered manner. In addition, due to the special form of the exhaust port and the influence of the structure of the compressor, the stress of the sliding vane 50 'can be influenced to a certain extent at the exhaust moment, and particularly as shown in fig. 1, the sliding vane 50' is acted by two forces F1 and F2 in different directions, the two forces form a rotating moment, and the sliding vane can overturn under the action of the rotating moment, so that the sliding vane 50 'is impacted with the end surfaces of the upper flange and the lower flange and the air cylinder, the service life of the sliding vane 50' is reduced, and the use reliability of the compressor is reduced.

Disclosure of Invention

The application mainly aims to provide a pump body assembly, a compressor and an air conditioner, so as to solve the problem of low reliability of the compressor in the prior art.

In order to achieve the above object, according to one aspect of the present application, there is provided a pump body assembly comprising: a first flange; a second flange; the cylinder assembly is respectively connected with the first flange and the second flange, and is positioned between the first flange and the second flange; the rotating shaft sequentially penetrates through the first flange, the air cylinder assembly and the second flange, and a sliding vane groove is formed in the rotating shaft; the sliding vane is arranged in the sliding vane groove and matched with the cylinder assembly to form a working cavity in the cylinder assembly; the first flange is provided with an exhaust channel communicated with the working cavity, the second flange is provided with an air flow balancing part, when the working cavity is in an exhaust state, air flow in the cylinder assembly forms force with moment F at the air flow balancing part and is applied to one end of the sliding vane far away from the exhaust channel, so that the sliding vane does not incline in the working process of the working cavity.

Further, an air flow balancing part is arranged at the position of the second flange opposite to the exhaust channel.

Further, the airflow balancing part is a groove, and the groove is arranged on the surface of one side of the second flange, which faces the exhaust channel.

Further, the projection of the exhaust channel on the second flange coincides with the groove.

Further, the air flow balancing part is an exhaust through hole which is arranged on the second flange in a penetrating way, and the exhaust through hole is arranged opposite to the exhaust channel.

Further, the profile of the cross section of the exhaust through hole is the same as the profile of the cross section of the exhaust passage.

Further, an annular protruding portion is arranged on the outer peripheral surface of the rotating shaft of the part, the annular protruding portion is located in the cylinder assembly, the sliding sheet groove is formed in the annular protruding portion, and the sliding sheet groove extends along the radial direction of the annular protruding portion.

Further, the slip sheet groove is a plurality of, and a plurality of slip sheet grooves are set up along the circumference interval of annular bulge, and the gleitbretter is a plurality of, and a plurality of slip sheets set up with a plurality of slip sheet grooves one-to-one, and a plurality of slip sheets divide into a plurality of independent working chambers with the inside of cylinder subassembly.

Further, the cylinder assembly includes: a cylinder; the rolling piece is arranged in the air cylinder and sleeved on the rotating shaft, and the sliding vane groove is matched with the inner wall surface of the rolling piece so as to divide the inner wall surface of the rolling piece and the rotating shaft into working cavities; the bearing sleeve is sleeved on the rolling element, at least part of the bearing sleeve is positioned between the inner wall surface of the cylinder and the outer peripheral surface of the rolling element, and rolling bodies are arranged between the rolling element and the bearing sleeve.

Further, the cross section of the exhaust passage is diamond-shaped.

According to another aspect of the present application, there is provided a compressor including a pump body assembly as described above.

According to another aspect of the present application, there is provided an air conditioner including a pump assembly, the pump assembly being the pump assembly described above.

By applying the technical scheme of the application, as the working cavity comprises the air suction cavity and the compression cavity, a part of high-pressure gas is reserved at the position of the air discharge channel in the air discharge process of the working cavity, when the sliding vane is about to sweep the air discharge channel, the high-pressure gas stored at the position of the air discharge channel is communicated with the air suction cavity of the working cavity, the phenomenon of over-expansion can occur in the working cavity due to the fact that the part of gas is high in pressure of Yu Xiqi, the air flow direction in the working cavity points to the air suction cavity, the resultant force born by the air suction side of the sliding vane is led to the end, far away from the air discharge channel, of the sliding vane, the sliding vane is subjected to a rotation moment under the action of the two resultant forces, and then the sliding vane can be overturned under the action of the moment, further can touch the finish surfaces of the first flange and the second flange, and generate impact. This impact changes the load on the slide, which can also cause the slide to strike the cylinder, thereby creating negative compressor vibration and noise. Through set up exhaust passage on first flange, set up the air current balancing unit on the second flange, can produce a moment of rotation opposite with exhaust passage department of first flange in air current balancing unit and balance the produced moment of first flange exhaust, make the moment of rotation of gleitbretter after being balanced like this, the atress of gleitbretter will be in balanced state to avoided the condition that the gleitbretter takes place to topple over, thereby guaranteed the reliable operation of compressor, reduced vibration and the noise of compressor effectively.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is a schematic diagram showing the force applied to a sliding vane during the exhaust process in the prior art

FIG. 2 shows a schematic exploded view of an embodiment of a pump body assembly according to the present application;

FIG. 3 shows a schematic view of a slide of a pump body assembly according to the present application subjected to forces during venting;

fig. 4 shows a schematic structural view of a first embodiment of a pump body assembly according to the application;

FIG. 5 shows a schematic cross-sectional view of the structure of FIG. 4 in the direction A-A;

FIG. 6 shows a schematic cross-sectional view of the structure in the direction B-B in FIG. 4;

fig. 7 shows a schematic structural view of a second embodiment of a pump body assembly according to the application;

FIG. 8 shows a schematic cross-sectional view of the structure of FIG. 7 taken in the direction C-C;

fig. 9 shows a schematic structural view of an embodiment of a second flange of a pump body assembly according to the present application.

Wherein the above figures include the following reference numerals:

10. a first flange; 11. an exhaust passage;

20. a second flange; 21. a groove;

30. a cylinder assembly; 31. a cylinder; 32. a rolling member; 33. a bearing sleeve; 34. a rolling element;

40. a rotating shaft; 41. a slide groove; 42. an annular projection;

50. a sliding sheet;

61. a baffle; 62. a valve plate; 63. a cover plate; 64. an oil pump.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims and drawings of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.

As shown in connection with fig. 2-9, a pump body assembly is provided according to an embodiment of the present application.

Specifically, the pump body assembly includes a first flange 10, a second flange 20, a cylinder assembly 30, a rotary shaft 40, and a slide 50. The cylinder assembly 30 is connected to the first flange 10 and the second flange 20, respectively. The cylinder assembly 30 is located between the first flange 10 and the second flange 20. The rotary shaft 40 sequentially penetrates through the first flange 10, the cylinder assembly 30 and the second flange 20. The rotating shaft 40 is provided with a slide groove 41. The slide 50 is disposed in the slide groove 41. Slide 50 cooperates with cylinder assembly 30 to form a working chamber within cylinder assembly 30. Wherein, an exhaust passage 11 communicated with the working cavity is arranged on the first flange 10, and an air flow balancing part is arranged on the second flange 20. When the working chamber is in the exhaust state, the force of the air flow in the cylinder assembly 30 forming the moment F at the air flow balance is applied to the end of the vane 50 away from the exhaust passage 11 so that the vane 50 does not incline during the operation of the working chamber.

In this implementation, since the working chamber includes the suction chamber and the compression chamber, wherein, the working chamber is in the exhaust process, a part of high pressure gas can be kept at the exhaust passage, when the gleitbretter is about to sweep the exhaust passage, the high pressure gas stored at the exhaust passage can be communicated with the suction chamber of the working chamber, this part of gas will appear the phenomenon of over-expansion because of the high Yu Xiqi pressure in the working chamber, the direction of the air flow in the working chamber points to the suction chamber, the resultant force that causes the suction side of the gleitbretter at this moment is just pointing to the one end of the gleitbretter far away from the exhaust passage, the gleitbretter will receive a rotation moment under the effect of these two resultant forces, the gleitbretter will overturn under the effect of this moment, and then will touch the finish surfaces of the first flange, the second flange, and produce the striking. This impact changes the load on the slide, which can also cause the slide to strike the cylinder, thereby creating negative compressor vibration and noise. Through set up exhaust passage on first flange, set up the air current balancing unit on the second flange, can produce a moment of rotation opposite with exhaust passage department of first flange in air current balancing unit and balance the produced moment of first flange exhaust, make the moment of rotation of gleitbretter after being balanced like this, the atress of gleitbretter will be in balanced state to avoided the condition that the gleitbretter takes place to topple over, thereby guaranteed the reliable operation of compressor, reduced vibration and the noise of compressor effectively.

Wherein, the position of the second flange 20 opposite to the exhaust passage 11 is provided with an airflow balancing part. This arrangement can further improve the stability and reliability of the compressor.

Preferably, the air flow balancing part is a groove 21, and the groove 21 is formed on a surface of the second flange 20 facing the exhaust passage 11. This arrangement enables the working chamber to be vented and the flow of air within the working chamber to create a moment at the recess 21 that is applied to the slide so that the slide is always in a balanced position and is not tilted. The working cavity comprises a compression cavity and a suction cavity. The working chamber performs a compression operation while sucking air. The first flange may be an upper flange and the second flange may be a lower flange. Of course, the first flange may be a lower flange, and the second flange may be an upper flange.

In order to be able to make the moment generated at the recess 21 exactly offset with the moment generated at the exhaust channel, the projection of the exhaust channel 11 onto the second flange 20 is arranged to coincide with the recess 21. It should be noted that "overlap" herein means that the projection shape of the exhaust passage 11 is identical to the shape and size of the groove.

Further, the air flow balancing portion is an exhaust through hole, which is provided to be penetrating through the second flange 20, and is provided to face the exhaust passage 11. This arrangement also serves to balance the slide. Further, the profile of the cross section of the exhaust through hole is the same as the profile of the cross section of the exhaust passage.

Wherein, be provided with annular bulge 42 on the outer peripheral face of partly pivot 40, annular bulge 42 is located cylinder subassembly 30, and gleitbretter groove 41 sets up on annular bulge 42, and gleitbretter groove 41 extends along the radial direction of annular bulge 42 and sets up. The plurality of vane grooves 41 are provided, the plurality of vane grooves 41 are provided at intervals along the circumferential direction of the annular projection 42, the plurality of vanes 50 are provided in one-to-one correspondence with the plurality of vane grooves 41, and the plurality of vanes 50 divide the interior of the cylinder assembly 30 into a plurality of independent working chambers. This arrangement can improve the performance of the compressor.

Further, the cylinder assembly 30 includes a cylinder 31, a rolling member 32, and a bearing housing 33. The rolling element 32 is disposed in the cylinder 31 and sleeved on the rotating shaft 40, and the sliding vane groove 41 is matched with the inner wall surface of the rolling element 32 to divide the inner wall surface of the rolling element 32 and the rotating shaft 40 into working chambers. The bearing housing 33 is fitted over the rolling member 32, at least a part of the bearing housing 33 is located between the inner wall surface of the cylinder 31 and the outer peripheral surface of the rolling member 32, and rolling elements 34 are provided between the rolling member 32 and the bearing housing 33.

The above-described embodiments may also be used in the field of compressor equipment technology, i.e. according to another aspect of the application, a compressor is provided. The compressor comprises a pump body assembly, wherein the pump body assembly is the pump body assembly of the embodiment.

The above embodiment may also be used in the technical field of air conditioner apparatuses, that is, according to another aspect of the present application, an air conditioner is provided, including a pump assembly, where the pump assembly is the pump assembly of the above embodiment.

Specifically, the air flow balancing part is arranged on the lower flange opposite to the exhaust channel, so that pressure fluctuation at the exhaust port of the upper flange can be balanced, disturbance of pressure on the sliding vane is reduced, and impact of the sliding vane on the end faces of the upper flange and the lower flange and the bearing is reduced. Vibration and noise levels of the sliding vane compressor are effectively improved. In the present embodiment, the profile of the cross section of the exhaust through hole is the same as the profile of the cross section of the exhaust passage 11, wherein the aspect ratio of the exhaust passage 11 is 4 or less. Preferably, the cross section of the exhaust passage 11 is of a diamond-shaped structure.

When the compressor runs, the rotating shaft rotates under the drive of the motor, and the sliding vane extends out of the sliding vane groove under the action of centrifugal force and contacts with the inner wall surface of the inner ring of the rolling piece. Along with the stable running of the compressor, the sliding vane starts to do reciprocating motion in the sliding vane groove, the head of the sliding vane is contacted with the inner wall surface, and the inner ring is driven to rotate. The number of the sliding sheets is 3, the whole crescent cavity is divided into 3 independent cavities by the 3 sliding sheets and the inner ring of the rolling piece, and the 3 cavities are periodically enlarged and reduced, so that the air suction and the air discharge of the compressor are realized. In the moving process of the compressor, the sliding vane and the sliding vane groove form a closed space, which is called a sliding vane back pressure cavity, the number of the sliding vane back pressure cavities is three, and the back pressure cavity is periodically enlarged and reduced along with the operation of the compressor. The pump body assembly is provided with a pump oil immersed in an oil pool at the bottom of the compressor, the rotating shaft rotates to drive the oil pump to rotate, the oil pump is a positive displacement pump, and the oil pump not only provides lubricating oil for each friction pair of the pump body, but also provides oil pressure with certain pressure for the sliding vane back pressure cavity.

As shown in fig. 4 to 6, the slide position is the slide position when the compressor is exhausting, at this time, the compressor is exhausting, and the gas at the exhaust port is exhausting pressure Pd. At this time, the direction of the air flow is that the inside of the air cylinder points to the outside of the flange, and the air flow direction is exhausted to the upper part of the sliding vane. Because the speed of the air flow at the air outlet is high, the pressure of the air outlet is low according to the dynamic and static energy conversion principle, the pressure of the lower part of the sliding vane is high, and the direction of resultant force born by the air outlet side of the sliding vane is upward.

As shown in fig. 7 and 8, the position of the sliding vane after the compressor discharges is shown, at this time, the sliding vane will sweep the exhaust port of the exhaust channel, because after the exhaust is compressed, a part of high pressure gas will remain at the exhaust port, but when the sliding vane will sweep the exhaust port, the high pressure gas stored at the exhaust port will also communicate with the suction cavity, this part of gas will have over-expansion phenomenon due to the pressure much higher than the suction pressure, the direction of the air flow will point to the suction cavity, the resultant force applied to the suction side of the sliding vane will point to the lower part of the sliding vane, and the force schematic diagram is shown in fig. 1. Therefore, under the action of the two resultant forces (F1 and F2), the sliding vane receives a rotation moment, and under the action of the moment, the sliding vane can turn over and further touch the finish machining surfaces of the upper flange and the lower flange to generate impact. This impact changes the force on the slide, which also causes the slide to strike the cylinder, thereby creating negative compressor vibration and noise.

As shown in fig. 9, a groove is formed on the lower flange, and the groove is symmetrically arranged with the upper flange, but is not open, and a rotation moment opposite to the exhaust port of the upper flange is generated according to the analysis of the stress relation to balance the moment generated by the exhaust of the upper flange. Therefore, after the rotation moment of the sliding vane is balanced, the stress of the sliding vane is more balanced, so that the overturning of the sliding vane is avoided, the reliable operation of the compressor is ensured, and the vibration and noise of the compressor are reduced.

The pump body assembly further comprises a baffle 61, a valve plate 62 and a cover plate 63. Wherein the oil pump 64 is connected to the cover 63.

In addition to the foregoing, references in the specification to "one embodiment," "another embodiment," "an embodiment," etc., indicate that the particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application, as generally described. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the application.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pump body assembly, comprising:

a first flange (10);

a second flange (20);

a cylinder assembly (30), the cylinder assembly (30) being connected to the first flange (10) and the second flange (20), respectively, the cylinder assembly (30) being located between the first flange (10) and the second flange (20);

the rotating shaft (40) is sequentially arranged in the first flange (10), the cylinder assembly (30) and the second flange (20) in a penetrating mode, and a sliding vane groove (41) is formed in the rotating shaft (40);

a slide sheet (50), wherein the slide sheet (50) is arranged in the slide sheet groove (41), and the slide sheet (50) is matched with the cylinder assembly (30) to form a working cavity in the cylinder assembly (30);

the first flange (10) is provided with an exhaust channel (11) communicated with the working cavity, the second flange (20) is provided with an air flow balancing part, when the working cavity is in an exhaust state, air flow in the air cylinder assembly (30) forms force with moment F at the air flow balancing part, and the force with moment F is applied to one end, far away from the exhaust channel (11), of the sliding sheet (50), so that the sliding sheet (50) does not incline in the working process of the working cavity.

2. Pump body assembly according to claim 1, characterized in that the second flange (20) is provided with the air flow balancing portion at a position opposite to the exhaust channel (11).

3. Pump body assembly according to claim 1 or 2, characterized in that the air flow balancing part is a groove (21), which groove (21) is open on the surface of the second flange (20) facing the exhaust channel (11) side.

4. A pump body assembly according to claim 3, characterized in that the projection of the exhaust channel (11) on the second flange (20) coincides with the recess (21).

5. Pump body assembly according to claim 1 or 2, characterized in that the air flow balancing portion is an exhaust through hole, which is open through the second flange (20), which is arranged opposite the exhaust channel (11).

6. Pump body assembly according to claim 5, characterized in that the profile of the cross section of the vent through hole is identical to the profile of the cross section of the vent channel (11).

7. Pump body assembly according to claim 1, characterized in that an annular protrusion (42) is provided on the outer circumferential surface of part of the rotating shaft (40), the annular protrusion (42) is located in the cylinder assembly (30), the slide groove (41) is provided on the annular protrusion (42), and the slide groove (41) is provided extending in the radial direction of the annular protrusion (42).

8. The pump body assembly according to claim 7, wherein the plurality of vane grooves (41) are provided, the plurality of vane grooves (41) are provided at intervals along the circumferential direction of the annular projection (42), the plurality of vanes (50) are provided in one-to-one correspondence with the plurality of vane grooves (41), and the plurality of vanes (50) divide the interior of the cylinder assembly (30) into a plurality of independent working chambers.

9. Pump body assembly according to claim 8, characterized in that the cylinder assembly (30) comprises:

a cylinder (31);

the rolling piece (32) is arranged in the air cylinder (31) and sleeved on the rotating shaft (40), and the sliding piece groove (41) is matched with the inner wall surface of the rolling piece (32) so as to divide the space between the inner wall surface of the rolling piece (32) and the rotating shaft (40) into the working cavity;

the bearing sleeve (33) is sleeved on the rolling element (32), at least part of the bearing sleeve (33) is positioned between the inner wall surface of the cylinder (31) and the outer circumferential surface of the rolling element (32), and rolling bodies (34) are arranged between the rolling element (32) and the bearing sleeve (33).

10. Pump body assembly according to claim 1, characterized in that the exhaust channel (11) has a diamond-shaped cross section.

11. A compressor comprising a pump body assembly, characterized in that the pump body assembly is as claimed in any one of claims 1 to 10.

12. An air conditioner comprising a pump body assembly, wherein the pump body assembly is as claimed in any one of claims 1 to 10.