CN217176880U

CN217176880U - Rotary vane compressor

Info

Publication number: CN217176880U
Application number: CN202221161038.3U
Authority: CN
Inventors: 马炳新
Original assignee: Changzhou Kangpurui Automotive Air Conditioning Co ltd
Current assignee: Changzhou Kangpurui Automotive Air Conditioning Co ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-08-12
Anticipated expiration: 2032-05-13

Abstract

The utility model relates to a compressor technical field especially relates to a rotary vane compressor, includes: the cylinder body is internally provided with an oval cavity, a rotor is arranged in the oval cavity, a rotor groove is formed in the rotor, a blade is arranged in the rotor groove, and the blade is tightly attached to the inner wall of the oval cavity when the rotor rotates; the front bearing and the rear bearing are fixedly connected with the front end surface and the rear end surface of the cylinder body; the front bearing is provided with an air inlet communicated with the oval cavity on the side close to the short half shaft of the oval cavity, and the cylinder body is provided with an exhaust hole on the other side of the oval cavity far away from the air inlet; the front bearing is also provided with an air supplementing hole communicated with the oval cavity, and the air supplementing hole is connected with an air supplementing loop and used for supplementing air in a compression area facing the oval cavity. According to the rotary vane compressor, the air supplementing loop communicated with the outside is arranged on the front bearing, so that heat exchange is carried out between medium-temperature medium-pressure refrigerant gas in the loop and high-temperature high-pressure gas in a cylinder compression cavity, the exhaust temperature and the overall temperature of the rotary vane compressor are reduced, and stable and efficient work is realized. Meanwhile, when the outdoor temperature is low in winter, the suction amount of the compressor is insufficient, the flow of the refrigerant in the system is increased by supplementing medium-temperature and medium-pressure refrigerant gas to the compressor, the heating capacity of the automobile air conditioning system can be improved, and the heating power consumption is reduced.

Description

Rotary vane compressor

Technical Field

The disclosure relates to the technical field of compressors, in particular to a rotary vane compressor.

Background

The rotary vane compressor is a rotary compressor widely applied to an automobile air conditioning system, and has the advantages of small volume, simple structure, low energy consumption and the like;

the inventor finds that in the related art, most of the automobile air conditioners are of non-independent types, the rotating speed of an engine and the rotating speed of a compressor change in the same proportion, and when an automobile engine is in a high speed or idling state, the temperature of the compressor rises along with the engine, so that the performance and the service life of the whole air conditioning system are influenced; meanwhile, when the outdoor temperature is low in winter, the air suction quantity of the compressor is obviously insufficient, the heating quantity of the automobile air conditioning system is reduced, and the heating power consumption is increased.

The information disclosed in this background section is only for enhancement of understanding of the general background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of at least one of the above technical problems, the present disclosure provides a rotary vane compressor, which adopts a manner of supplying air into a compression cavity of a cylinder body, thereby solving the problem of over-high temperature of the compressor at high speed or idling, and simultaneously solving the problem of low refrigerating capacity of an automobile air conditioner in winter.

According to an aspect of the present disclosure, there is provided a rotary vane compressor including:

the cylinder body is internally provided with an oval cavity, a rotor is arranged in the oval cavity, a rotor groove is formed in the rotor, a blade is arranged in the rotor groove, and the blade is tightly attached to the inner wall of the oval cavity when the rotor rotates;

the front bearing and the rear bearing are fixedly connected with the front end surface and the rear end surface of the cylinder body and are used for sealing the oval cavity and rotatably supporting the rotor;

the front bearing is provided with an air inlet communicated with the elliptical cavity on the side close to the short half shaft of the elliptical cavity, the cylinder body is provided with an air outlet on the other side of the elliptical cavity far away from the air inlet, and when the rotor rotates, external air is sucked into the elliptical cavity, and the air in the elliptical cavity is compressed and discharged from the air outlet;

the front bearing is further provided with an air supplementing hole communicated with the oval cavity, and the air supplementing hole is connected with an air supplementing loop and used for supplementing air towards the compression area of the oval cavity.

In some embodiments of the present disclosure, two opposite crescent-shaped chambers are formed between the rotor and the elliptical cavity, the air inlet is disposed at a starting end of the crescent-shaped chamber through which the blade passes when the blade rotates, the air outlet is disposed at an ending end of the crescent-shaped chamber through which the blade passes, and the compression region is a region after the blade passes through the air inlet.

In some embodiments of the present disclosure, the air replenishment hole is provided in the crescent-shaped chamber on a side adjacent to the air discharge hole.

In some embodiments of the present disclosure, the vanes are slidably disposed in the rotor slots, and when the rotor rotates, the vanes are attached to the inner wall of the oval chamber under the action of centrifugal force and back pressure.

In some embodiments of the present disclosure, the cylinder has a valve plate at an outlet of the exhaust hole.

In some embodiments of the present disclosure, the air supply hole is communicated with the two crescent-shaped chambers in a central symmetrical manner.

In some embodiments of the present disclosure, the front bearing has an air supply passage therein, which communicates with the two air supply holes.

In some embodiments of the present disclosure, the front bearing further has a main air hole communicating with the outside, and the main air hole communicates with the two air supply channels.

In some embodiments of the present disclosure, the gas injected into the gas make-up circuit toward the elliptical cavity is a medium-temperature and medium-pressure refrigerant gas in an auxiliary circuit of an air conditioner.

In some embodiments of the present disclosure, the air supply hole is connected to a one-way valve which opens in one direction towards the air supply hole.

The beneficial effect of this disclosure does: this is disclosed through set up the tonifying qi return circuit with outside intercommunication on the front bearing for the gas that comes from air conditioning system auxiliary circuit carries out the heat exchange with the high temperature high-pressure gas in the cylinder body compression chamber, thereby reduces rotary vane compressor exhaust temperature and bulk temperature, guarantees its stable high-efficient work. Meanwhile, when the outdoor temperature is low in winter, the suction amount of the compressor is insufficient, the flow of the refrigerant in the system is increased by supplementing medium-temperature and medium-pressure refrigerant gas to the compressor, the heating capacity of the automobile air conditioning system can be improved, and the heating power consumption is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is an exploded view of a rotary vane compressor according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a rotary vane compressor according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of an inner side structure of a front bearing in an embodiment of the present disclosure;

FIG. 4 is a schematic diagram illustrating the operation principle of the compressor in the oval cavity structure according to the embodiment of the present disclosure;

FIG. 5 is a side view of a front bearing in an embodiment of the present disclosure;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5 in an embodiment of the present disclosure;

fig. 7 is an outer side structural schematic view of a front bearing in an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The rotary vane compressor shown in fig. 1 to 7 includes a cylinder block 10, a rotor 12, a front bearing 20, and a rear bearing 30, wherein:

as shown in fig. 1 and 2, in the disclosed embodiment, an oval cavity 11 is provided in a cylinder 10, a rotor 12 is provided in the oval cavity 11, a rotor groove is provided on the rotor 12, a vane 13 is provided in the rotor groove, and the vane 13 abuts against the inner wall of the oval cavity 11 when the rotor 12 rotates; the elliptical cavity 11 is a cavity extending in the axial direction inside the cylinder 10, the diameter of the rotor 12 is not larger than the minor axis of the elliptical cavity, and the vanes 13 are slidably disposed in the rotor 12, as shown in fig. 2, when the rotor 12 rotates in the elliptical cavity, the arc portions of the vanes 13 are in contact with the inner wall of the elliptical cavity due to the centrifugal force and the back pressure;

with reference to fig. 1, the front bearing 20 is connected to the front end face of the cylinder 10, and the rear bearing 30 is connected to the rear end face of the cylinder 10, which are used to seal the elliptical cavity 11 and support the rotation of the rotor 12; it should be noted here that the outer diameter of the rotor 12 is slightly smaller than the minor semi-axis of the oval chamber, so that the rotor 12 can rotate;

as shown in fig. 3 and 4, the front bearing 20 has an air inlet hole 21 communicating with the elliptical cavity 11 on the side close to the short half axis of the elliptical cavity 11, the cylinder 10 has an air outlet hole 14 on the other side of the elliptical cavity 11 away from the air inlet hole 21, ambient air is sucked into the elliptical cavity 11 when the rotor 12 rotates, and the air in the elliptical cavity 11 is compressed and discharged from the air outlet hole 14; with this arrangement, the rotor 12 sucks gas through the gas inlet holes 21 during rotation, then compresses the gas sucked into the oval chamber under the rotation of the blades 13, and finally discharges the compressed gas through the gas outlet holes 14;

in the embodiment of the present disclosure, since the compressor is connected to the engine, when the engine is in a high speed or idling state, the compressor also rotates at a high speed or low speed, and due to a high-speed friction force or a factor of poor cooling of the air conditioner during the idling state, the temperature of the gas in the elliptical cavity is increased, in order to solve the problem, in the embodiment of the present disclosure, the front bearing 20 is further provided with a gas supply hole 22 communicated with the elliptical cavity 11, and the gas supply hole 22 is connected to a gas supply loop for supplying gas to the compression region of the elliptical cavity 11. The gas supplementing loop is a gas loop arranged in the air conditioning system, and the medium-temperature and medium-pressure gas is continuously sprayed into the compression area, so that the medium-temperature and medium-pressure gas enters the compression area, the high-temperature and high-pressure gas in the compression area is cooled, the exhaust temperature and the overall temperature of the rotary vane compressor are reduced, and the stable and efficient work of the compressor is ensured;

in some embodiments of the present disclosure, when the outdoor temperature is lower in winter, the gas injected from the gas supplementing hole 22 is medium-temperature and medium-pressure refrigerant gas from the auxiliary loop of the air conditioning system, and the medium-temperature and medium-pressure refrigerant gas is supplemented to increase the refrigerant flow in the system, thereby increasing the heating capacity in the vehicle air conditioning system and reducing the heating power consumption.

On the basis of the above embodiment, as shown in fig. 4, in the embodiment of the present disclosure, two opposite crescent-shaped chambers are formed between the rotor 12 and the elliptical cavity 11, the air inlet hole 21 is disposed at the starting end of the crescent-shaped chamber through which the vane 13 rotates when the vane 13 rotates, the air outlet hole 14 is disposed at the ending end of the crescent-shaped chamber through which the vane 13 rotates, and the compression area is the area after the vane 13 passes through the air inlet hole 21. Thus, the air supplement hole 22 is arranged in the compression area, so that the air suction process is divided into two paths in the rotation process of the blade 13 in the crescent chamber, wherein one path is sucked from the air inlet hole 21, and the other path is sprayed from the air supplement hole 22 and finally discharged through the exhaust port;

in the present embodiment, in order to increase the degree of gas compression, as shown in fig. 4, the gas replenishing hole 22 is provided in the crescent-shaped chamber on the side close to the gas discharging hole 14. The side close to the discharge hole 14 here means that the center line is close to one side of the discharge hole 14 as shown in fig. 4; by this arrangement, it is ensured that the gas sucked in through the gas inlet 21 is not affected, and further gas is injected in the process of gas compression;

with respect to the movement of the vanes 13, please continue to refer to fig. 4, in the embodiment of the present disclosure, the vanes 13 are slidably disposed in the rotor slots, and when the rotor 12 rotates, the vanes 13 are attached to the inner wall of the oval chamber under the action of centrifugal force and back pressure. Because the distance between the inner wall of the oval chamber and the center is enlarged and then reduced, when the rotor 12 rotates, the blades extend out along the rotor groove under the action of centrifugal force and backpressure and the reaction force of the oval inner wall under the action of the centrifugal force and the backpressure and retract under the reaction force of the oval chamber inner wall, so that the blades are always in contact with the oval inner wall;

in order to achieve compression of the gas, in the disclosed embodiment, the cylinder 10 has a valve plate 15 at the outlet of the exhaust hole 14. The valve plate 15 is equivalent to a pressure valve, when the pressure is low, the valve plate 15 seals the exhaust hole 14, the pressure of the compressed gas is kept, and when the pressure of the gas reaches a certain degree, the valve plate 15 is separated from the exhaust hole 14 under the action of the pressure, and the compressed gas is exhausted; when the pressure is reduced, the valve plate 15 is reset under the action of the elasticity of the valve plate;

in the disclosed embodiment, since the combination of the elliptical chamber and the rotor 12 forms two crescent-shaped chambers, in order to ensure the balance of the air supply, as shown in fig. 4, the air supply holes 22 communicate with the crescent-shaped chambers in a centrosymmetric manner. The central symmetry here means that the connection of the two air supply holes 22 passes through the center of the rotor 12.

In some embodiments of the present disclosure, since there are two air replenishing holes 22, in order to improve the reliability of air replenishing, an air replenishing channel 23 is formed in the front bearing 20 and communicates with the two air replenishing holes 22. It should be noted that, in an embodiment of the present disclosure, two air passages are respectively connected to the two air supply passages 23; in another embodiment of the present disclosure, as shown in fig. 5 to 7, the front bearing 20 further has a main air hole 24 communicating with the outside, and the main air hole 24 communicates with the two air supply passages 23. Thus, the uniformity and synchronism of air supply can be improved by connecting one main air hole 24 with two air supply channels 23; it should be noted here that in the disclosed embodiment, the main air hole 24 does not penetrate the front bearing 20, but communicates with the outside on one side and the two air supply passages 23 on the other side.

In addition, in the embodiment of the present disclosure, in order to improve the reliability of the gas supply and prevent the compressed gas from overflowing from the gas supply hole 22, the gas supply hole 22 and a check valve (not shown) opening in one direction into the gas supply hole 22 are arranged by the check valve, so that the reliability of the gas supply can be improved.

It will be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, which are presented solely for purposes of illustrating the principles of the disclosure, and that various changes and modifications may be made to the disclosure without departing from the spirit and scope of the disclosure, which is intended to be covered by the claims. The scope of the disclosure is defined by the appended claims and equivalents thereof.

Claims

1. A rotary vane compressor comprising:

2. The rotary vane compressor as claimed in claim 1, wherein two opposite crescent chambers are formed between the rotor and the oval chamber, the air inlet hole is formed at the starting end of the crescent chamber through which the vane rotates, the air outlet hole is formed at the ending end of the crescent chamber through which the vane rotates, and the compression region is a region after the vane passes through the air inlet hole.

3. The rotary vane compressor as claimed in claim 2, wherein the air supplement hole is provided in the crescent shaped chamber at a side adjacent to the air discharge hole.

4. The rotary vane compressor as claimed in claim 1, wherein the vanes are slidably disposed in the rotor slots, and the vanes are engaged with an inner wall of the oval chamber by centrifugal force and back pressure when the rotor rotates.

5. The rotary vane compressor as claimed in claim 1, wherein the cylinder block has a valve sheet at an outlet of the discharge hole.

6. The rotary vane compressor as claimed in claim 2 wherein the air supply hole communicates with both of the crescent-shaped chambers in a centrosymmetric manner.

7. The rotary vane compressor as claimed in claim 6 wherein the front bearing has an air supply passage therein communicating with the two air supply holes.

8. The rotary vane compressor as claimed in claim 7 wherein the front bearing further has a main air hole communicating with the outside, the main air hole communicating with the two air supply passages.

9. The rotary vane compressor as claimed in any one of claims 1 to 8 wherein the gas injected into the gas make-up circuit toward the elliptical cavity is a medium temperature and medium pressure refrigerant gas in an auxiliary air conditioning circuit.

10. The rotary vane compressor as claimed in any one of claims 1 to 8, wherein the air supply hole is provided with a check valve opening in one direction toward the air supply hole.