Pump body assembly, compressor and refrigeration equipment

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

Technical Field

[0001] The present invention relates to the field of refrigeration equipment, and in particular to a pump body assembly, a compressor and a refrigeration equipment. Background Art

[0002] Refrigeration equipment such as air conditioners and refrigerators are commonly used household appliances in people's lives. The compressor is an extremely important component of refrigeration equipment. There are many types of compressors, such as scroll compressors or rotary compressors. The working principle of existing rotary compressors is that the rotor drives the crankshaft to rotate, and the rotation of the crankshaft drives the roller to rotate, thereby driving the sliding vane to compress the gas to form a pressure difference. However, since the crankshaft rotates eccentrically, it will affect the overall balance. Therefore, in actual applications, a balancing block must be set on the rotor to maintain balance. However, the balancing block can ensure balance in a static state, but cannot maintain balance during movement, which leads to the inevitable noise of the compressor. Summary of the invention

[0003] The present invention provides a pump body assembly, a compressor and a refrigeration device, aiming to improve the problem that a balancing block needs to be installed on the pump body assembly of an existing compressor and that the noise is relatively high during operation.

[0004] The present invention is achieved in that:

[0005] A pump body assembly, comprising: a cylinder shell, a straight shaft, an eccentric block, a sliding vane, an air intake port and an air exhaust port, wherein the cylinder shell is coaxially arranged with the straight shaft and can coaxially rotate with the straight shaft, a compression chamber is provided in the cylinder shell, the eccentric block is arranged in the compression chamber and eccentrically arranged with the straight shaft, and an outer side wall of the eccentric block abuts against an inner side wall of the compression chamber;

[0006] A slide groove is provided on the inner side wall of the compression chamber, an elastic member is provided in the slide groove, the slide plate is arranged in the slide groove, and one end of the slide plate abuts against the elastic member, and the other end abuts against the outer side wall of the eccentric block;

[0007] The air intake port and the air exhaust port are both communicated with the compression chamber.

[0008] Furthermore, in a preferred embodiment of the present invention, the pump body assembly further comprises a first flange, the first flange is provided with an axial hole, the axial hole is coaxially arranged with the straight shaft, and the straight shaft is inserted into the axial hole.

[0009] Furthermore, in a preferred embodiment of the present invention, the pump body assembly further comprises a second flange, the second flange is arranged on a side of the cylinder shell away from the first flange, and the second flange is fixedly connected to the eccentric block.

[0010] Furthermore, in a preferred embodiment of the present invention, the pump body assembly further includes a shell, the cylinder shell, the straight shaft and the first flange are all disposed in the shell, and the first flange is fixedly connected to the shell.

[0011] Furthermore, in a preferred embodiment of the present invention, the straight shaft and the cylinder shell are integrally arranged.

[0012] Furthermore, in a preferred embodiment of the present invention, the eccentric block is cylindrical or elliptical.

[0013] Furthermore, in a preferred embodiment of the present invention, the air intake port is arranged on the outer side wall of the eccentric block.

[0014] Furthermore, in a preferred embodiment of the present invention, the exhaust port is arranged on the inner side wall of the cylinder shell, or the exhaust port is arranged on the outer side wall of the eccentric block.

[0015] A compressor comprises the pump body assembly described in any one of the above items.

[0016] A refrigeration device comprises the above-mentioned compressor.

[0017] The beneficial effects of the present invention are as follows: when the pump body assembly obtained by the above design is in operation, the rotor directly drives the straight shaft to rotate, and the straight shaft drives the coaxially arranged cylinder shell to rotate coaxially, while the eccentric block remains stationary. When the cylinder shell rotates, the sliding plate in the upper slide groove moves with the cylinder shell. In this process, since the two ends of the sliding plate are respectively in contact with the outer side walls of the elastic member and the eccentric block, the sliding plate can slide in the slide groove in the process of moving with the cylinder shell, thereby cooperating with the cylinder shell and the eccentric block to compress the gas to generate a pressure difference. 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a structural schematic diagram of a pump body assembly provided by an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure inside a cylinder shell in a pump body assembly provided by an embodiment of the present invention.

[0021] Icon: straight shaft 1; cylinder shell 2; eccentric block 3; elastic member 4; sliding vane 5; first flange 6; second flange 7; air intake port 8; exhaust port 9; rotor 10; housing 11. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] Example 1, please refer to Figure 1 and Figure 2 As shown, this embodiment provides a pump body assembly, including: a cylinder shell 2, a straight shaft 1, an eccentric block 3, a sliding vane 5, an air intake port 8 and an air exhaust port 9, the cylinder shell 2 is coaxially arranged with the straight shaft 1, and the cylinder shell 2 can rotate coaxially with the straight shaft 1, the cylinder shell 2 has a compression chamber, the eccentric block 3 is arranged in the compression chamber and eccentrically arranged with the straight shaft 1, and the outer wall of the eccentric block 3 abuts against the inner wall of the compression chamber;

[0028] A slide groove is provided on the inner wall of the compression chamber, an elastic member 4 is provided in the slide groove, a slide plate 5 is provided in the slide groove, and one end of the slide plate 5 abuts against the elastic member 4, and the other end abuts against the outer wall of the eccentric block 3; in this embodiment, the elastic member 4 is a spring.

[0029] The air intake port 8 and the air exhaust port 9 are both connected to the compression chamber.

[0030] During operation, the rotor 10 is connected to the straight shaft 1, and the rotor 10 directly drives the straight shaft 1 to rotate, and the straight shaft 1 drives the coaxially arranged cylinder shell 2 to rotate coaxially, while the eccentric block 3 remains stationary. When the cylinder shell 2 rotates, the slide 5 in the upper slide groove moves with the cylinder shell 2. In this process, since the two ends of the slide 5 are respectively in contact with the outer side walls of the elastic member 4 and the eccentric block 3, the slide 5 can slide in the slide groove while moving with the cylinder shell 2, thereby cooperating with the cylinder shell 2 and the eccentric block 3 to compress the gas to generate a pressure difference. Its compression principle is similar to that of the existing compressor, and the eccentric block 3 can be regarded as a roller in the existing compressor. The difference is that the eccentric block 3 in the pump body assembly in this embodiment remains stationary, and the rotation is the cylinder shell 2, but the compression is far from changing the volume of the crescent-shaped space by the slide 5 to compress the gas, and its compression efficiency will not be affected.

[0031] The pump assembly provided in this embodiment uses a straight shaft 1 to replace the original crankshaft, and will not rotate eccentrically, so there is no need to set a balancing block on the rotor 10. At the same time, during operation, the eccentric block 3 will not move, and the cylinder shell 2 rotates coaxially with the straight shaft 1, 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.

[0032] For details, please refer to Figure 1 and Figure 2 As shown, in this embodiment, the cylinder shell 2 is annular, and when it rotates, the inner wall always keeps in contact with the eccentric block 3 to ensure the sealing of the internal space. The cylinder shell 2 and the straight shaft 1 are integrated to increase the stability of the cylinder shell 2 when it rotates. The cylinder shell 2 can be integrally injection molded with the straight shaft 1, or fixed by bolts or the like to form an integral body. In order to improve the sliding stability of the sliding vane 5, the eccentric block 3 is cylindrical or elliptical. Preferably, the eccentric block 3 is cylindrical.

[0033] For further information, please refer to Figure 1 and Figure 2 As shown, in this embodiment, the pump body assembly further includes a first flange 6, and an axial hole is provided on the first flange 6. The axial hole is coaxially arranged with the straight shaft 1, and the straight shaft 1 is inserted into the axial hole. The first flange 6 is arranged above the cylinder shell 2, and is located between the cylinder shell 2 and the rotor 10. The axial hole provided on the first flange 6 can play the role of a bearing, improve the radial stability of the straight shaft 1 during the rotation process, and reduce the noise during the movement process.

[0034] For further information, please refer to Figure 1 and Figure 2As shown, in this embodiment, the pump body assembly further includes a second flange 7, which is disposed on the side of the cylinder housing 2 away from the first flange 6, and the second flange 7 is fixedly connected to 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, which can improve the stability of the eccentric block 3. At the same time, the second flange 7 can form an axial restraining force on the straight shaft 1, thereby improving the rotation stability of the straight shaft 1. In this embodiment, the eccentric block 3 can be integrally injection molded with the second flange 7, or fixed by bolts or the like to form an integral whole.

[0035] For further information, please refer to Figure 1 and Figure 2 As shown, in this embodiment, the pump body assembly also includes a housing 11, and the cylinder shell 2, the straight shaft 1 and the first flange 6 are all arranged in the housing 11. The housing 11 can be an existing compressor housing. In this embodiment, the first flange 6 and the second flange 7 are fixedly connected to the housing to improve stability during movement. Specifically, the first flange 6 and the second flange 7 are connected to the housing 11 by three-point welding.

[0036] For further information, please refer to Figure 1 and Figure 2 As shown, in this embodiment, the air intake port 8 is arranged on the outer side wall of the eccentric mass 3. The exhaust port 9 is arranged on the inner side wall of the cylinder shell 2, or the exhaust port 9 is arranged on the outer side wall of the eccentric mass 3. Among them, the air intake 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 is worth noting that in this embodiment, the positions of the air intake port 8 and the exhaust port 9 must comply with the compression mechanism of the rotor 10 type compressor. The position settings of the air intake port 8 and the exhaust port 9 are explained below in conjunction with the accompanying drawings.

[0037] When the air inlet 8 is arranged on the outer side wall of the eccentric block 3 and the air outlet 9 is arranged on the inner side wall of the cylinder shell 2, Figure 2 For illustration. In this embodiment, the rotation direction of the cylinder shell 2 is clockwise, the contact position of the eccentric block 3 and the cylinder shell 2 is the twelve o'clock position of the eccentric block 3, and the slide groove and the slide plate 5 are located at the six o'clock position of the eccentric block 3. When setting, the air intake port 8 needs to be located at the next moving position of the contact position in the rotation direction, that is, the air intake port 8 should be located between the twelve o'clock position and the six o'clock position of the eccentric block 3 (clockwise). Preferably, the air intake port 8 is located between the twelve o'clock position and the one o'clock position of the eccentric block 3 (clockwise). Because the exhaust port 9 is set on the cylinder shell 2, it will change its position with the rotation of the cylinder shell 2, so it is necessary to limit the position by the slide groove that is relatively stationary with the cylinder shell 2. Specifically, the exhaust port 9 is located at the next moving position of the slide groove in the rotation direction. That is, as shown in the figure, the exhaust port 9 should be located on the left side of the slide groove, and the distance between the exhaust port 9 and the slide groove should be as small as possible to ensure the compression effect.

[0038] When the air inlet 8 and the air outlet 9 are both arranged on the outer side wall of the eccentric block 3, Figure 2 As shown in FIG. 1 , the air inlet 8 should be located on the right side of the contact point, and the air outlet 9 should be located on the left side of the contact point. That is, the air inlet 8 should be located between the 12 o'clock position and the 6 o'clock position of the eccentric mass 3 (clockwise); the air outlet 9 should be located between the 6 o'clock position and the 12 o'clock position of the eccentric mass 3 (clockwise). Preferably, the air inlet 8 is located between the 12 o'clock position and the 1 o'clock position of the eccentric mass 3 (clockwise); the air outlet 9 is located between the 11 o'clock position and the 12 o'clock position of the eccentric mass 3 (clockwise).

[0039] In this embodiment, the position setting principle of the air intake port 8 and the air exhaust port 9 is the same as the principle of setting the air intake port 8 and the air exhaust port 9 in the existing rotor 10 type compressor. Those skilled in the art can set and adjust the positions of the air intake port 8 and the air exhaust port 9 with the support of this application document and the prior art, and the technical solution thus formed should also be within the protection scope of this application.

[0040] This embodiment also provides a compressor, which includes any one of the pump body components described above.

[0041] This embodiment also provides a refrigeration device, which includes the above-mentioned compressor.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pump assembly, characterized in that: include: A cylinder shell, a straight shaft, an eccentric block, a sliding vane, an air intake port, and an air exhaust port, wherein the cylinder shell is coaxially arranged with the straight shaft and can coaxially rotate with the straight shaft, wherein a compression chamber is provided in the cylinder shell, wherein the eccentric block is arranged in the compression chamber and eccentrically arranged with respect to the straight shaft, and wherein an outer side wall of the eccentric block abuts against an inner side wall of the compression chamber; A slide groove is provided on the inner side wall of the compression chamber, an elastic member is provided in the slide groove, the slide plate is arranged in the slide groove, and one end of the slide plate abuts against the elastic member, and the other end abuts against the outer side wall of the eccentric block; The air intake port and the air exhaust port are both connected to the compression chamber; the pump body assembly also includes a first flange, on which is provided an axial hole, the axial hole is coaxially arranged with the straight shaft, and the straight shaft is inserted into the axial hole; the pump body assembly also includes a second flange, the second flange is arranged on the side of the cylinder shell away from the first flange, and the second flange is fixedly connected to the eccentric block; the straight shaft and the cylinder shell are integrally arranged.

2. The pump assembly according to claim 1, characterized in that: The pump body assembly also includes a shell, the cylinder shell, the straight shaft and the first flange are all arranged in the shell, and the first flange is fixedly connected to the shell.

3. The pump assembly according to claim 1, characterized in that: The eccentric block is cylindrical or elliptical.

4. The pump assembly according to claim 1, characterized in that: The air inlet is arranged on the outer side wall of the eccentric block.

5. The pump assembly according to claim 4, characterized in that: The exhaust port is arranged on the inner side wall of the cylinder shell, or the exhaust port is arranged on the outer side wall of the eccentric block.

6. A compressor, characterized in that: The compressor comprises the pump body assembly according to any one of claims 1-5.

7. A refrigeration device, characterized in that: The refrigeration device comprises the compressor according to claim 6.

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