CN110242572B

CN110242572B - Pump body assembly, compressor and refrigeration equipment

Info

Publication number: CN110242572B
Application number: CN201910420614.8A
Authority: CN
Inventors: 李自好; 赵旭敏; 彭慧明; 樊峰刚; 张洪玮
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2025-01-10
Anticipated expiration: 2039-05-20
Also published as: CN110242572A

Abstract

The present invention provides a pump body assembly, a compressor and a refrigeration device, and relates to the technical field of refrigeration devices. The pump body assembly includes: a cylinder shell, a straight shaft, an eccentric block, a sliding vane, an air intake port and an exhaust port, and the cylinder shell can rotate coaxially with the straight shaft, and a compression chamber is provided in the cylinder shell, and the eccentric block is arranged in the compression chamber and eccentrically arranged with the straight shaft; a slide groove is provided on the inner side wall of the compression chamber, and an elastic member is provided in the slide groove, and the sliding vane is arranged in the slide groove, and one end of the sliding vane abuts against the elastic member, and the other end abuts against the outer side wall of the eccentric block. The pump body assembly provided by the present invention uses a straight shaft to replace the original crankshaft, and will not rotate eccentrically, so there is no need to set a balancing block on the rotor. At the same time, during operation, the eccentric block will not move, and the cylinder shell rotates coaxially with the straight shaft, and there is no eccentric rotation, so the balance is good during the rotation process, and the overall balance of the compressor will not be destroyed, which greatly reduces the noise of the compressor during operation.

Description

Pump body assembly, compressor and refrigeration equipment

Technical Field

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

Background

Refrigerating equipment such as air conditioners, refrigerators and the like is household equipment commonly used in life of people. And the compressor is an extremely important component in refrigeration equipment. Compressors are of various types, such as scroll compressors or rotor compressors. The existing rotor type compressor has the working principle that a rotor drives a crankshaft to rotate, and the crankshaft rotates to drive a roller to rotate, so that a sliding vane is driven to slide to compress gas to form pressure difference. However, because the crankshaft rotates eccentrically, the overall balance is affected, and therefore, in practical application, a balance weight must be arranged on the rotor to maintain balance, but the balance weight can ensure balance in a static state, and cannot maintain balance in a moving process, which results in unavoidable noise of the compressor.

Disclosure of Invention

The invention provides a pump body assembly, a compressor and refrigeration equipment, and aims to solve the problems that a balancing weight is required to be installed on the pump body assembly of the existing compressor and noise is large in the operation process.

The invention is realized in the following way:

The pump body assembly comprises a cylinder shell, a straight shaft, an eccentric block, a sliding vane, an air suction port and an air exhaust port, wherein the cylinder shell is coaxially arranged with the straight shaft and can coaxially rotate along with the straight shaft, a compression cavity is formed in the cylinder shell, the eccentric block is arranged in the compression cavity and is eccentrically arranged with the straight shaft, and the outer side wall of the eccentric block is abutted with the inner side wall of the compression cavity;

a sliding groove is formed in the inner side wall of the compression cavity, an elastic piece is arranged in the sliding groove, the sliding piece is arranged in the sliding groove, one end of the sliding piece is abutted with the elastic piece, and the other end of the sliding piece is abutted with the outer side wall of the eccentric block;

The air suction port and the air discharge port are communicated with the compression cavity.

Further, in a preferred embodiment of the present invention, the pump body assembly further includes a first flange, and a shaft hole is provided on the first flange, the shaft hole is coaxially disposed with the straight shaft, and the straight shaft is inserted into the shaft hole.

Further, in a preferred embodiment of the present invention, the pump body assembly further includes a second flange, the second flange is disposed on a side of the cylinder housing away from the first flange, and the second flange is fixedly connected with the eccentric block.

Further, in a preferred embodiment of the present invention, the pump body assembly further includes a housing, the cylinder housing, the straight shaft, and the first flange are all disposed in the housing, and the first flange is fixedly connected with the housing.

Further, in a preferred embodiment of the present invention, the straight shaft and the cylinder housing are integrally provided.

Further, in a preferred embodiment of the present invention, the eccentric mass is cylindrical or elliptical.

Further, in a preferred embodiment of the present invention, the suction port is provided on an outer sidewall of the eccentric mass.

Further, in a preferred embodiment of the present invention, the exhaust port is provided on an inner side wall of the cylinder case or on an outer side wall of the eccentric mass.

A compressor comprising the pump body assembly of any one of the above.

A refrigeration apparatus comprising the compressor described above.

The pump body assembly has the beneficial effects that the rotor directly drives the straight shaft to rotate during operation, the straight shaft drives the coaxially arranged cylinder shell to coaxially rotate, and the eccentric block is kept motionless. When the cylinder shell rotates, the sliding vane in the upper sliding groove moves along with the cylinder shell, in the process, as the two ends of the sliding vane are respectively abutted with the outer side walls of the elastic piece and the eccentric block, the sliding vane can slide in the sliding groove in the process of moving along with the cylinder shell, and accordingly the cylinder shell and the eccentric block are matched to compress gas to generate pressure difference. According to the pump body assembly provided by the invention, the original crankshaft is replaced by the straight shaft, and eccentric rotation is avoided, so that a balancing weight is not required to be arranged on the rotor. Meanwhile, in the running process, the eccentric block cannot move, the cylinder shell coaxially rotates along with the straight shaft, and eccentric rotation does not exist, so that the balance is good in the rotating process, the integral balance of the compressor cannot be damaged, and the noise of the compressor in the working process is greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a pump assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the inside of a cylinder housing in a pump body assembly according to an embodiment of the present invention.

The drawing shows a straight shaft 1, a cylinder shell 2, an eccentric block 3, an elastic piece 4, a sliding sheet 5, a first flange 6, a second flange 7, an air suction port 8, an air exhaust port 9, a rotor 10 and a shell 11.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1 and 2, the embodiment provides a pump body assembly, which comprises a cylinder housing 2, a straight shaft 1, an eccentric block 3, a sliding sheet 5, an air suction port 8 and an air exhaust port 9, wherein the cylinder housing 2 is coaxially arranged with the straight shaft 1, the cylinder housing 2 can coaxially rotate along with the straight shaft 1, a compression cavity is formed in the cylinder housing 2, the eccentric block 3 is arranged in the compression cavity and is eccentrically arranged with the straight shaft 1, and the outer side wall of the eccentric block 3 is abutted with the inner side wall of the compression cavity;

The inner side wall of the compression cavity is provided with a chute, an elastic piece 4 is arranged in the chute, a sliding piece 5 is arranged in the chute, one end of the sliding piece 5 is abutted with the elastic piece 4, the other end of the sliding piece is abutted with the outer side wall of the eccentric block 3, and in the embodiment, the elastic piece 4 is a spring.

The suction port 8 and the discharge port 9 are both in communication with the compression chamber.

In operation, the rotor 10 is connected with the straight shaft 1, the rotor 10 directly drives the straight shaft 1 to rotate, the straight shaft 1 drives the coaxially arranged cylinder shell 2 to coaxially rotate, and the eccentric block 3 is kept motionless. When the cylinder shell 2 rotates, the sliding vane 5 in the upper sliding groove moves along with the cylinder shell 2, and in the process, as the two ends of the sliding vane 5 are respectively abutted against the outer side walls of the elastic piece 4 and the eccentric block 3, the sliding vane 5 can slide in the sliding groove in the process of moving along with the cylinder shell 2, so that the cylinder shell 2 and the eccentric block 3 are matched to compress gas to generate pressure difference. The compression principle is similar to that of the existing compressor, the eccentric block 3 can be regarded as a roller in the existing compressor, and the difference is that the eccentric block 3 in the pump body assembly in the embodiment is kept motionless, the rotation is the cylinder shell 2, but the compression is far away from the cylinder shell, the compression efficiency is not influenced by changing the volume of the crescent space through the sliding sheets 5.

The pump body assembly provided in this embodiment uses the straight shaft 1 to replace the original crankshaft, and does not perform eccentric rotation, so that the rotor 10 does not need to be provided with a balancing weight. Meanwhile, in the running process, the eccentric block 3 cannot move, the cylinder shell 2 coaxially rotates along with the straight shaft 1, and eccentric rotation does not exist, so that the balance is good in the rotating process, the integral balance of the compressor cannot be damaged, and the noise of the compressor in the working process is greatly reduced.

Specifically, referring to fig. 1 and 2, in the present embodiment, the cylinder housing 2 is in a ring shape, and the inner side wall is always in contact with the eccentric block 3 during rotation, so as to ensure tightness of the inner space. And the cylinder shell 2 and the straight shaft 1 are integrally arranged, so that the stability of the cylinder shell 2 during rotation is improved. The cylinder housing 2 may be integrally injection-molded with the straight shaft 1, or may be fixed by bolts or the like to be integrated. In order to improve the sliding stability of the sliding vane 5, the eccentric block 3 is cylindrical or elliptic cylindrical. Preferably, the eccentric mass 3 has a cylindrical shape.

Further, referring to fig. 1 and 2, in this embodiment, the pump body assembly further includes a first flange 6, a shaft hole is provided on the first flange 6, the shaft hole is coaxially disposed with the straight shaft 1, and the straight shaft 1 is inserted into the shaft hole. The first flange 6 is arranged above the cylinder shell 2 and is positioned between the cylinder shell 2 and the rotor 10, the shaft hole arranged on the first flange 6 can play a role of a bearing, the radial stability of the straight shaft 1 in the rotation process is improved, and the noise in the motion process is reduced.

Further, referring to fig. 1 and 2, in the present embodiment, the pump assembly further includes a second flange 7, the second flange 7 is disposed on a side of the cylinder housing 2 away from the first flange 6, and the second flange 7 is fixedly connected with the eccentric block 3. The second flange 7 is disposed below the cylinder housing 2, and the eccentric block 3 is fixedly disposed on the upper surface of the second flange 7, and stability of the eccentric block 3 may be mentioned. Meanwhile, the second flange 7 can form an axial binding force on the straight shaft 1, so that the rotation stability of the straight shaft 1 is improved. In this embodiment, the eccentric block 3 may be integrally injection-molded with the second flange 7, or may be fixed by bolts or the like to form an integral body.

Further, referring to fig. 1 and 2, in the present embodiment, the pump assembly further includes a housing 11, the cylinder housing 2, the straight shaft 1 and the first flange 6 are all disposed in the housing 11, and the housing 11 may be a conventional compressor housing. In this embodiment, the first flange 6 and the second flange 7 are fixedly connected with the housing, so as to improve stability in the movement process. Specifically, the first flange 6 and the second flange 7 are connected to the housing 11 by three-point welding.

Further, as shown in fig. 1 and 2, in the present embodiment, the air inlet 8 is provided on the outer sidewall of the eccentric mass 3. The exhaust port 9 is provided on the inner side wall of the cylinder case 2, or the exhaust port 9 is provided on the outer side wall of the eccentric mass 3. Wherein the suction port 8 is connected to the outside of the compressor or the compressor intake pipe through a ventilation pipe, and the exhaust port 9 is connected to the compressor exhaust pipe through a ventilation pipe. It should be noted that, in the present embodiment, the positions of the air inlet 8 and the air outlet 9 are in accordance with the compression mechanism of the rotor 10 type compressor, and the positions of the air inlet 8 and the air outlet 9 are described below with reference to the drawings.

When the suction port 8 is provided on the outer side wall of the eccentric block 3 and the exhaust port 9 is provided on the inner side wall of the cylinder case 2, the description will be given with reference to fig. 2. In this embodiment, the cylinder housing 2 rotates clockwise, the contact position between the eccentric block 3 and the cylinder housing 2 is twelve o 'clock of the eccentric block 3, and the sliding groove and the sliding vane 5 are located at six o' clock of the eccentric block 3. When this is done, the suction opening 8 is to be located in the next movement position of the contact position in the rotational direction, i.e. the suction opening 8 is to be located in the range from the twelve o 'clock position to the six o' clock position of the eccentric mass 3 (clockwise). Preferably, the suction port 8 is located between the twelve o 'clock position of the eccentric mass 3 and the range of one o' clock position (clockwise). The exhaust port 9 is provided in the cylinder case 2 and changes its position according to the rotation of the cylinder case 2, and therefore, it is necessary to perform position limitation by a chute that is stationary relative to the cylinder case 2. Specifically, the exhaust port 9 is located at the next movement position of the chute in the rotational direction. That is, the exhaust port 9 should be located at the left side of the chute as shown in the drawing, and the distance between the exhaust port 9 and the chute should be as small as possible to ensure the compression effect.

When both the suction port 8 and the exhaust port 9 are provided on the outer side wall of the eccentric mass 3, as also shown in fig. 2, the suction port 8 should be located on the right side of the contact point and the exhaust port 9 should be located on the left side of the contact point. I.e. the suction opening 8 should be located between the twelve o 'clock position and the six o' clock position of the eccentric mass 3 (clockwise) and the discharge opening 9 should be located between the six o 'clock position and the twelve o' clock position of the eccentric mass 3 (clockwise). Preferably, the suction port 8 is located between the twelve o 'clock position and the one o' clock position of the eccentric mass 3 (clockwise), and the discharge port 9 is located between the eleven o 'clock position and the twelve o' clock position of the eccentric mass 3 (clockwise).

In this embodiment, the principle of the arrangement of the air suction port 8 and the air discharge port 9 is the same as that of the air suction port 8 and the air discharge port 9 in the existing rotor 10 compressor, and those skilled in the art can set and adjust the positions of the air suction port 8 and the air discharge port 9 with the support of the present document and the prior art, so that the formed technical solution shall also fall within the protection scope of the present application.

The embodiment also provides a compressor, which comprises the pump body assembly of any one of the above.

The embodiment also provides a refrigeration device, which comprises the compressor.

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

Claims

1. The pump body assembly is characterized by comprising a cylinder shell, a straight shaft, an eccentric block, a sliding sheet, an air suction port and an air exhaust port, wherein the cylinder shell is coaxially arranged with the straight shaft and can coaxially rotate along with the straight shaft, a compression cavity is formed in the cylinder shell, the eccentric block is arranged in the compression cavity and is eccentrically arranged with the straight shaft, and the outer side wall of the eccentric block is abutted with the inner side wall of the compression cavity;

The air suction port and the air exhaust port are communicated with the compression cavity, the pump body assembly further comprises a first flange, a shaft hole is formed in the first flange, the shaft hole is coaxial with the straight shaft, the straight shaft is inserted into the shaft hole, the pump body assembly further comprises a second flange, the second flange is arranged on one side, away from the first flange, of the cylinder shell, and is fixedly connected with the eccentric block, and the straight shaft and the cylinder shell are integrally arranged.

2. The pump body assembly of claim 1, further comprising a housing, wherein the cylinder housing, the straight shaft, and the first flange are all disposed within the housing, and wherein the first flange is fixedly connected to the housing.

3. The pump body assembly of claim 1, wherein the eccentric mass is cylindrical or elliptical.

4. The pump body assembly of claim 1, wherein the suction port is provided on an outer sidewall of the eccentric mass.

5. The pump body assembly of claim 4, wherein the exhaust port is disposed on an inner sidewall of the cylinder housing or the exhaust port is disposed on an outer sidewall of the eccentric mass.

6. A compressor comprising the pump body assembly of any one of claims 1-5.

7. A refrigerating apparatus, characterized in that, the refrigeration apparatus comprising the compressor of claim 6.