CN110242572A - A kind of pump assembly, compressor and refrigeration equipment - Google Patents

Abstract

The invention provides a pump body assembly, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment. The pump body assembly includes: cylinder shell, straight shaft, eccentric block, sliding plate, suction port and exhaust port, and the cylinder shell can rotate coaxially with the straight shaft. There is a compression chamber inside the cylinder shell, and the eccentric block is arranged in the compression chamber And set eccentrically with the straight axis; there is a chute on the inner wall of the compression chamber, and an elastic member is arranged in the chute, and the sliding piece is arranged in the chute, and one end of the sliding piece is in contact with the elastic piece, and the other end is in contact with the eccentric block. The outer walls abut. The pump body assembly provided by the present invention uses a straight shaft instead of the original crankshaft and does not rotate eccentrically, so there is no need to arrange a balance weight on the rotor. At the same time, during the 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, and the overall balance of the compressor will not be damaged. Greatly reduces the noise of the compressor when it is working.

Description

A 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 technique

Refrigerating equipment such as air conditioners and refrigerators are household equipment commonly used in people's lives. The compressor is an extremely important component in refrigeration equipment. There are many types of compressors, such as scroll compressors or rotary compressors. The working principle of the existing rotor compressor is that the rotor drives the crankshaft to rotate, and the crankshaft rotates to drive the rollers to rotate, thereby driving the sliding vane to slide to compress the gas to form a pressure difference. However, since the crankshaft rotates eccentrically, it will affect the overall balance. Therefore, in practical applications, a balance block must be installed on the rotor to maintain balance. However, the balance block can ensure the balance in the static state, and cannot maintain the balance in the process of motion. , which leads to unavoidable noise from the compressor.

Contents of the invention

The invention provides a pump body assembly, a compressor and refrigeration equipment, aiming at improving the existing problem that the pump body assembly of the compressor needs to be installed with a balance weight and has relatively high noise during operation.

The present invention is achieved like this:

A pump body assembly, comprising: a cylinder shell, a straight shaft, an eccentric block, a slide plate, an air suction port and an exhaust port, the cylinder shell is coaxially arranged with the straight shaft, and the cylinder shell can follow the The straight shaft rotates coaxially. There is a compression chamber in the cylinder shell. The eccentric block is arranged in the compression chamber and is eccentrically arranged with the straight shaft, and the outer wall of the eccentric block is aligned with the inner side of the compression chamber wall abutment;

The inner side wall of the compression chamber is provided with a chute, the chute is provided with an elastic piece, the slide piece is arranged in the chute, and one end of the slide piece is in contact with the elastic piece, and the other end is in contact with the elastic piece. One end abuts against the outer wall of the eccentric block;

Both the suction port and the exhaust port communicate with the compression chamber.

Further, in a preferred embodiment of the present invention, the pump body assembly further includes a first flange, the first flange is provided with a shaft hole, and the shaft hole is coaxially arranged with the straight shaft, 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 the side of the cylinder shell 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 casing, the cylinder casing, the straight shaft and the first flange are all arranged in the casing, and the first A flange is fixedly connected with the housing.

Further, in a preferred embodiment of the present invention, the straight shaft and the cylinder shell are integrated.

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

Further, in a preferred embodiment of the present invention, the suction port is arranged on the outer wall of the eccentric mass.

Further, in a preferred embodiment of the present invention, the exhaust port is arranged on the inner wall of the cylinder shell, or the exhaust port is arranged on the outer wall of the eccentric block.

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

A refrigeration device, comprising the above-mentioned compressor.

The beneficial effect of the present invention is: the pump body assembly obtained by the above design of the present invention, during operation, the rotor directly drives the direct shaft to rotate, and the direct shaft drives the coaxially arranged cylinder shell to rotate coaxially, while the eccentric block remains stationary. When the cylinder shell rotates, the slide piece in the upper chute moves together with the cylinder shell. During the movement of the cylinder shell, it slides in the chute, so as to cooperate 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 instead of the original crankshaft and does not rotate eccentrically, so there is no need to arrange a balance weight on the rotor. At the same time, during operation, the eccentric block will not move, while the cylinder shell rotates coaxially with the straight shaft, and there is no eccentric rotation, so the balance is good during the rotation, and the overall balance of the compressor will not be damaged. Greatly reduces the noise of the compressor when it is working.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of a pump body assembly provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the cylinder housing in a pump body assembly provided by an embodiment of the present invention.

Icons: straight shaft 1; cylinder shell 2; eccentric block 3; elastic member 4; sliding plate 5; first flange 6; second flange 7; suction port 8; exhaust port 9; rotor 10; housing 11 .

Detailed ways

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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Embodiment 1, please refer to Figure 1 and Figure 2, this embodiment provides a pump body assembly, including: cylinder shell 2, straight shaft 1, eccentric block 3, sliding plate 5, suction port 8 and exhaust port 9. The cylinder shell 2 is set coaxially with the straight shaft 1, and the cylinder shell 2 can rotate coaxially with the straight shaft 1. There is a compression chamber inside the cylinder shell 2, and the eccentric block 3 is set in the compression chamber and is eccentrically set with the straight shaft 1. And the outer wall of the eccentric block 3 abuts against the inner wall of the compression chamber;

The inner wall of the compression chamber is provided with a chute, and the elastic member 4 is arranged in the chute, and the sliding piece 5 is arranged in the chute, and one end of the sliding piece 5 is in contact with the elastic member 4, and the other end is in contact with the outer wall of the eccentric block 3. Abutting; in this embodiment, the elastic member 4 is a spring.

Both the suction port 8 and the exhaust port 9 communicate with the compression chamber.

During operation, the rotor 10 is connected with the direct shaft 1, and the rotor 10 directly drives the direct shaft 1 to rotate, and the direct 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 sliding piece 5 in the upper chute moves together with the cylinder shell 2. During this process, since the two ends of the sliding piece 5 are in contact with the outer wall of the elastic member 4 and the eccentric block 3 respectively, so The sliding plate 5 can slide in the slide groove during the movement with the cylinder shell 2, so as to cooperate 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. Shell 2, but the compression distance is to change the volume of the crescent-shaped space through the slide plate 5 to perform gas compression, and its compression efficiency will not be affected.

The pump body assembly provided in this embodiment uses the straight shaft 1 instead of the original crankshaft, and does not rotate eccentrically, so there is no need to set a balance weight on the rotor 10 . At the same time, during operation, the eccentric block 3 will not move, while 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, and the compressor will not be damaged. The overall balance greatly reduces the noise of the compressor when it is working.

Specifically, please refer to Fig. 1 and Fig. 2, in this embodiment, the cylinder shell 2 is in the shape of a ring, and when it rotates, the inner side wall is always in contact with the eccentric block 3 to ensure the tightness of the inner space. Moreover, 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 injection molded integrally with the straight shaft 1, or can be fixed by bolts to form an integral body. In order to improve the sliding stability of the slide plate 5, the eccentric block 3 is cylindrical or elliptical. Preferably, the eccentric mass 3 is cylindrical.

Further, please refer to Fig. 1 and Fig. 2, in this embodiment, the pump body assembly also includes a first flange 6, on which a shaft hole is provided, and the shaft hole is coaxially arranged with the straight shaft 1 , The straight shaft 1 is inserted in the shaft hole. The first flange 6 is arranged above the cylinder shell 2, between the cylinder shell 2 and the rotor 10, and the shaft hole provided on the first flange 6 can function as a bearing to improve the radial direction of the straight shaft 1 during rotation. Stability, reduce noise during exercise.

Further, please refer to Fig. 1 and Fig. 2, in this embodiment, the pump body assembly also includes a second flange 7, the second flange 7 is arranged on the side of the cylinder shell 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 arranged under the cylinder shell 2 , and the eccentric block 3 is fixedly arranged 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 binding force on the straight shaft 1 to improve the rotation stability of the straight shaft 1 . In this embodiment, the eccentric block 3 and the second flange 7 can be integrally injection molded, or fixed by bolts to form an integral body.

Further, please refer to Fig. 1 and Fig. 2, in this embodiment, the pump body assembly also includes a casing 11, the cylinder casing 2, the straight shaft 1 and the first flange 6 are all arranged in the casing 11, and the casing Body 11 adopts existing compressor shell to get final product. In this embodiment, the first flange 6 and the second flange 7 are fixedly connected with the housing, which improves the stability during movement. Specifically, the first flange 6 and the second flange 7 are connected to the housing 11 through three-point welding.

Further, please refer to FIG. 1 and FIG. 2 , in this embodiment, the suction port 8 is disposed on the outer wall of the eccentric mass 3 . The exhaust port 9 is arranged on the inner wall of the cylinder shell 2 , or the exhaust port 9 is arranged on the outer wall of the eccentric block 3 . Wherein, the suction port 8 is connected to the outside of the compressor or the compressor intake pipe through the ventilation pipe, and the exhaust port 9 is connected to the compressor discharge pipe through the ventilation pipe. It is worth noting that in this embodiment, the positions of the suction port 8 and the discharge port 9 should conform to the compression mechanism of the rotor 10 type compressor. The positions of the suction port 8 and the discharge port 9 will be described below with reference to the drawings.

When the suction port 8 is provided on the outer wall of the eccentric block 3 and the exhaust port 9 is provided on the inner wall of the cylinder shell 2, it will be described with reference to FIG. 2 . In this embodiment, the rotation direction of the cylinder shell 2 is clockwise, the contact position between the eccentric block 3 and the cylinder shell 2 is the twelve o'clock position of the eccentric block 3, and the chute and the sliding piece 5 are located at the six o'clock position of the eccentric block 3 clock position. When setting, the suction port 8 needs to be located at the next movement position of the contact position in the direction of rotation, that is, the suction 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 suction port 8 is located between the twelve o'clock position and the one o'clock position of the eccentric mass 3 (clockwise). Because the exhaust port 9 is arranged on the cylinder shell 2, its position will change with the rotation of the cylinder shell 2, so the position needs to be limited by a chute that is relatively stationary with the cylinder shell 2. Specifically, the exhaust port 9 is located at the next movement position of the chute in the direction of rotation. That is, as shown in the figure, the exhaust port 9 should be located on the left side of the chute, 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 arranged on the outer wall of the eccentric block 3, as shown in Figure 2, the suction port 8 should be located on the right side of the contact point, and the exhaust port 9 should be located at the side of the contact point. left side. That is, the suction port 8 should be located between the twelve o'clock position and the six o'clock position of the eccentric block 3 (clockwise); the exhaust port 9 should be located between the six o'clock position and the twelve o'clock position of the eccentric block 3 Between ranges of positions (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); the exhaust port 9 is located between the eleven o'clock position and the twelve o'clock position of the eccentric mass 3 Between ranges of positions (clockwise).

In this embodiment, the principle of setting the positions of the air inlet 8 and the air outlet 9 is the same as that of the air inlet 8 and the air outlet 9 in the existing rotor 10 type compressor. With the support of the prior art, the positions of the air intake port 8 and the exhaust port 9 are set and adjusted, and the technical solutions thus formed should also be within the protection scope of the present application.

This embodiment also provides a compressor, which includes any one of the pump body assemblies described above.

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

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A pump body assembly, characterized in that it comprises: a cylinder shell, a straight shaft, an eccentric block, a slide plate, an air inlet and an exhaust port, the cylinder shell is coaxially arranged with the straight shaft, and the The cylinder casing can rotate coaxially with the straight shaft, and there is a compression chamber inside the cylinder casing, the eccentric block is arranged in the compression chamber and is eccentrically arranged with the straight shaft, and the outer wall of the eccentric block is in contact with the straight shaft. The inner side wall of the compression chamber abuts; The inner side wall of the compression chamber is provided with a chute, the chute is provided with an elastic piece, the slide piece is arranged in the chute, and one end of the slide piece is in contact with the elastic piece, and the other end is in contact with the elastic piece. One end abuts against the outer wall of the eccentric block; Both the suction port and the exhaust port communicate with the compression chamber. 2. The pump body assembly according to claim 1, characterized in that, the pump body assembly further comprises a first flange, and a shaft hole is arranged on the first flange, and the shaft hole and the straight shaft Coaxially arranged, the straight shaft is inserted into the shaft hole. 3. The pump body assembly according to claim 2, characterized in that, the pump body assembly further comprises a second flange, the second flange is disposed on the cylinder housing away from the first flange One side, and the second flange is fixedly connected with the eccentric block. 4. The pump body assembly according to claim 2, characterized in that, the pump body assembly further comprises a casing, and the cylinder casing, the straight shaft and the first flange are all arranged in the casing , the first flange is fixedly connected to the housing. 5 . The pump body assembly according to claim 1 , wherein the straight shaft and the cylinder housing are integrated. 6 . 6. The pump body assembly according to claim 1, wherein the eccentric mass is cylindrical or elliptical. 7 . The pump body assembly according to claim 1 , wherein the suction port is disposed on the outer wall of the eccentric weight. 8 . 8 . The pump body assembly according to claim 7 , wherein the exhaust port is disposed on the inner wall of the cylinder housing, or the exhaust port is disposed on the outer wall of the eccentric weight. 9. A compressor, characterized in that the compressor comprises the pump body assembly according to any one of claims 1-8. 10. A refrigerating device, characterized in that the refrigerating device comprises the compressor according to claim 9.