CN107939683B

CN107939683B - Compressor and refrigerating system

Info

Publication number: CN107939683B
Application number: CN201711391767.1A
Authority: CN
Inventors: 张贺龙; 李日华; 侯芙蓉; 刘志华; 许云功; 张宝鸽
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2017-12-21
Filing date: 2017-12-21
Publication date: 2023-07-04
Anticipated expiration: 2037-12-21
Also published as: CN107939683A

Abstract

The invention relates to a compressor and a refrigerating system, wherein the compressor comprises: a body having a compression chamber therein; and the buffer cavity is used for discharging at least part of air flow discharged by the compression chamber after flowing through the buffer cavity so as to reduce exhaust noise. According to the invention, the buffer cavity is arranged to attenuate air flow pulsation discharged from the compression chamber, so that the exhaust noise of the compressor is reduced.

Description

Compressor and refrigerating system

Technical Field

The invention relates to the technical field of refrigeration, in particular to a compressor and a refrigeration system.

Background

The advantages of high energy efficiency and low cost of the prior variable frequency compressor are widely applied; the variable-frequency screw compressor can be developed to replace the condition of parallel connection of multiple machines, so that the screw machine set reaches the national first-level energy efficiency standard; as the rotation speed of the variable frequency compressor is increased, the number of times of meshing of the male rotor and the female rotor in unit time is increased, the exhaust flow speed is increased, and the air flow pulsation is also increased, so that the noise of the compressor is increased, and the noise of the variable frequency compressor is a difficult problem to be solved urgently.

Disclosure of Invention

The invention aims to provide a compressor and a refrigerating system, which can solve the problem of large exhaust noise of the compressor.

To achieve the above object, the present invention provides a compressor comprising: a body having a compression chamber therein; and the buffer cavity is used for discharging at least part of air flow discharged by the compression chamber after flowing through the buffer cavity so as to reduce exhaust noise.

In a preferred or alternative embodiment, the compressor includes a bearing housing fitted to an outer end of the body, through which the air flow discharged from the compression chamber flows out.

In a preferred or alternative embodiment, the buffer chamber is disposed within the body.

In a preferred or alternative embodiment, a housing is provided on the outside of the bearing housing, the housing and the bearing housing forming the buffer chamber therebetween.

In a preferred or alternative embodiment, the buffer chamber is located between the inlet and outlet of the housing.

In a preferred or alternative embodiment, the compressor includes a flow directing passage configured to direct at least a portion of the flow of gas discharged from the compression chamber toward the buffer chamber to reduce exhaust noise.

In a preferred or alternative embodiment, the flow guide channel communicates a flow path between the air inlet and the air outlet of the bearing housing with the buffer chamber.

In a preferred or alternative embodiment, the flow-guiding channel communicates a flow passage between the discharge end of the compression chamber to the air inlet of the bearing housing with the buffer chamber.

In a preferred or alternative embodiment, the buffer cavity comprises a first buffer cavity and a second buffer cavity which are mutually communicated, a shell is arranged outside the bearing seat, the first buffer cavity is formed between the shell and the bearing seat, and the second buffer cavity is arranged in the machine body.

In a preferred or alternative embodiment, the first buffer chamber is disposed between the air inlet and the air outlet of the bearing housing.

In a preferred or alternative embodiment, the compressor includes a flow directing passage communicating the first buffer chamber with a flow passage between the inlet and the outlet of the bearing housing.

In a preferred or alternative embodiment, the first buffer chamber is disposed around the periphery of the bearing housing.

In a preferred or alternative embodiment, said buffer chamber comprises at least two of said first buffer chambers.

To achieve the above object, the present invention provides a refrigeration system including the above compressor.

Based on the technical scheme, the invention has at least the following beneficial effects:

in some embodiments, the compressor comprises a machine body and a buffer cavity, a compression chamber is arranged in the machine body, at least part of air flow discharged from the compression chamber flows to the buffer cavity, the air flow flows in the buffer cavity and is discharged, and the buffer cavity can attenuate air flow pulsation of exhaust, so that exhaust noise of the compressor is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 illustrates a partial perspective schematic view of a compressor in accordance with at least one embodiment of the present invention;

FIG. 2 shows a schematic view of a bearing housing of at least one embodiment of the present invention;

fig. 3 shows a schematic view of a machine body according to at least one embodiment of the invention.

The reference numbers in the drawings:

1-a machine body;

2-bearing seats; 21-an air inlet; 22-exhaust port;

3-a buffer chamber; 31-a first buffer chamber; 32-a second buffer chamber;

4-diversion channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.

In one or more embodiments, as shown in fig. 1, the compressor includes a housing 1, and a compression chamber is provided in the housing 1 for compressing a gas. The compressor also comprises a buffer cavity 3, at least part of air flow discharged from the compression chamber flows to the buffer cavity 3, and the air flow flows in the buffer cavity 3 and is discharged; by providing the buffer chamber 3, the pulsation of the flow of the exhaust gas can be reduced, and the exhaust noise of the compressor can be reduced.

In some embodiments, the compressor further comprises a diversion channel 4. The flow guiding channel 4 is configured to guide the air flow discharged from at least the compression chamber to the buffer cavity 3, and the air flow flows in the buffer cavity 3 and then is discharged from the buffer cavity 3, so that the pulsation of the exhaust air flow can be attenuated by arranging the buffer cavity 3, and the exhaust noise can be reduced.

In at least one embodiment, by arranging the buffer cavity 3, the problems that the pulsation of the exhaust gas flow is increased and the noise of the compressor is increased when the compressor runs at a high rotation speed can be solved, and the noise value of the compressor is reduced.

In some embodiments, the buffer chamber 3 may be provided with only one communication port communicating with the diversion channel 4, and the air flow enters the buffer chamber 3 from the communication port of the buffer chamber 3, and then is discharged from the buffer chamber 3 through the communication port of the buffer chamber 3. The pulsation of the exhaust gas flow is damped by the buffer chamber 3, thereby achieving the purpose of reducing exhaust noise.

In some embodiments, the compressor may include a bearing housing 2, the bearing housing 2 being fitted to an outer end of the body 1, and an air flow discharged from the compression chamber being discharged through the bearing housing 2.

As shown in fig. 1, the bearing housing 2 includes an intake port 21 and an exhaust port 22, and the intake port 21 communicates with the exhaust end of the compression chamber.

The shock-absorbing chamber 3 has a large cross section relative to the flow path from the discharge end of the compression chamber to the discharge port 22 of the bearing housing 2, and the noise of the discharge air flow can be reduced by the suddenly increased cavity.

The gas discharged from the exhaust end of the compression chamber firstly enters the bearing seat 2 through the gas inlet 21, then the gas is discharged out of the bearing seat 2 through the gas outlet 22, part of the gas passes through the buffer cavity 3 in the process and then is discharged out of the bearing seat 2 from the gas outlet 22, and the effect of reducing the pulsation of the exhaust gas flow is achieved through the action of the buffer cavity 3, so that the noise of the compressor is reduced.

In the first embodiment, the buffer chamber 3 may be provided in the body 1 (as shown in fig. 3). The cavity formed between the body 1 and the components inside it may be used to form the buffer chamber 3.

For example: the body 1 of the compressor can be of a double-wall structure, a cavity is formed between the double-wall structure, the double-wall structure can reduce noise generated by compressed gas in the compression chamber, and the cavity between the double-wall structure is used as a buffer cavity 3, so that exhaust air flow pulsation and compressor exhaust noise can be reduced. The flow guide passage 4 guides at least part of the flow discharged from the discharge end of the compression chamber to the buffer chamber 3, and the pulsation of the flow of the discharge gas is attenuated by the buffer chamber 3, thereby reducing the discharge noise.

In some embodiments, the diversion channel 4 communicates the flow path between the air inlet 21 to the air outlet 22 of the bearing seat 2 with the buffer chamber 3.

In other embodiments, the diversion channel 4 communicates the flow path between the discharge end of the compression chamber to the air inlet 21 of the bearing housing 2 with the buffer chamber 3.

In the second embodiment, the buffer chamber 3 may be provided outside the body 1, for example: is provided on the bearing housing 2 (as shown in fig. 2).

In some embodiments, at least a partial region of the exterior of the bearing housing 2 may be provided with a housing, between which a buffer chamber 3 is formed with the bearing housing 2. The flow guide passage 4 guides at least part of the flow discharged from the discharge end of the compression chamber to the buffer chamber 3, and the pulsation of the flow of the discharge gas is attenuated by the buffer chamber 3, thereby reducing the discharge noise.

Alternatively, the buffer chamber 3 may be located between the air inlet 21 and the air outlet 22 of the bearing housing 2.

In some embodiments, the buffer chamber 3 is disposed around the outer circumference of the bearing housing 2. For example: the buffer chamber 3 may be provided one turn around the outer circumference of the bearing housing 2, or half or one third of a turn, etc. as required.

In some embodiments, the compressor may include at least two buffer chambers 3, each buffer chamber 3 being disposed around the outer circumference of the bearing housing 2.

In the third embodiment, the buffer chamber 3 may include a portion provided outside the body 1 and a portion provided inside the body 1.

In some embodiments, the buffer chamber 3 may include a first buffer chamber 31 (shown in fig. 2) and a second buffer chamber 32 (shown in fig. 3), the first buffer chamber 31 being in communication with the second buffer chamber 32. The first buffer chamber 31 may be provided outside the body 1. For example, as shown in fig. 2, the first buffer chamber 31 is provided to the bearing housing 2. Optionally, a housing is provided outside the bearing housing 2, and a first buffer chamber 31 is formed between the housing and the bearing housing 2. As shown in fig. 3, the second buffer chamber 32 may be provided in the body 1. The second buffer chamber 32 may be formed using a cavity between the body 1 and the components therein.

Optionally, the first buffer chamber 31 is provided between the air inlet 21 and the air outlet 22 of the bearing housing 2.

In some embodiments, the diversion channel 4 communicates the first buffer chamber 31 with the flow path between the air inlet 21 to the air outlet 22 of the bearing housing 2. Alternatively, the flow guide passage 4 communicates the second buffer chamber 32 with the flow path between the intake port 21 to the exhaust port 22 of the bearing housing 2.

In other embodiments, the diversion channel 4 communicates the flow path between the discharge end of the compression chamber to the air inlet 21 of the bearing housing 2 with the first buffer chamber 31. Alternatively, the flow guide passage 4 communicates a flow passage between the discharge end of the compression chamber to the air inlet 21 of the bearing housing 2 with the second buffer chamber 32.

In some embodiments, the first buffer chamber 31 is disposed around the outer circumference of the bearing housing 2. For example: the first buffer chamber 31 may be provided one turn around the outer circumference of the bearing housing 2, or half turn or one third turn, etc. as required.

In some embodiments, the buffer chamber 3 may include at least two first buffer chambers 31, each first buffer chamber 31 being disposed around the outer circumference of the bearing housing 2.

In the third embodiment, a housing may be disposed on the outer periphery of the bearing seat 2, a first buffer cavity 31 is formed between the housing and the bearing seat 2, a cavity formed between the double-wall structure of the machine body 1 may be used as the second buffer cavity 32, and after the assembly of the bearing seat 2 and the machine body 1 is completed, the first buffer cavity 31 and the second buffer cavity 32 form a buffer cavity 3 having only one communication port, and the communication port is communicated with the diversion channel 4. The air flow is guided to the communication port of the buffer cavity 3 through the diversion effect of the diversion channel 4, enters the buffer cavity 3 through the communication port, is discharged from the buffer cavity 3 through the communication port, and the communication port of the buffer cavity 3 is communicated with the exhaust port 22 of the bearing seat 2 through the diversion channel 4.

Before the gas discharged from the compression chamber passes through the exhaust port 22 of the bearing seat 2, part of the gas enters the buffer cavity 3, and the pulsation of the exhaust gas flow is attenuated by the buffer cavity 3, so that the aim of reducing the exhaust noise is fulfilled. The air flow discharged from the buffer chamber 3 is discharged through the exhaust port 22 of the bearing housing 2.

In some embodiments, the compressor can be a variable frequency compressor, and the problem that the exhaust air flow pulsation is large and the noise of the compressor is increased at a high rotating speed of the variable frequency compressor can be solved by arranging the buffer cavity 3 in the variable frequency compressor.

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

The refrigeration system in the above embodiment may further include a heat exchanger or the like. The heat exchanger may be an evaporator, condenser, or the like.

In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the components, and the terms are not meant to have any special meaning unless otherwise stated, so that the scope of the present invention is not to be construed as being limited.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.

Claims

1. A compressor, comprising:

a body (1) having a compression chamber therein;

a buffer cavity (3), wherein at least part of the air flow discharged from the compression chamber flows through the buffer cavity (3) and is discharged, so that exhaust noise is reduced;

the bearing seat (2) is assembled at the outer end of the machine body (1), and the air flow discharged by the compression chamber flows out through the bearing seat (2); the bearing seat (2) comprises an air inlet (21) and an air outlet (22), and the air inlet (21) is communicated with the air outlet end of the compression chamber; the gas discharged from the exhaust end of the compression chamber firstly enters the bearing seat (2) through the gas inlet (21), then part of the gas enters the buffer cavity (3), and the gas flow discharged from the buffer cavity (3) is discharged through the gas outlet (22);

-a flow-guiding channel (4) configured to guide at least part of the flow of air discharged from the compression chamber towards the buffer chamber (3) to reduce exhaust noise; the flow guide channel (4) is used for communicating a flow channel between an air inlet (21) and an air outlet (22) of the bearing seat (2) with the buffer cavity (3);

the outside of bearing frame (2) is equipped with the casing, buffer chamber (3) include first buffer chamber (31), first buffer chamber (31) are located between the casing with bearing frame (2).

2. The compressor according to claim 1, characterized in that the buffer chamber (3) comprises a second buffer chamber (32) communicating with the first buffer chamber (31), the second buffer chamber (32) being provided inside the machine body (1).

3. The compressor according to claim 1, characterized in that the first buffer chamber (31) is provided between the air inlet (21) and the air outlet (22) of the bearing housing (2).

4. The compressor according to claim 1, characterized in that the flow guiding channel (4) communicates the first buffer chamber (31) with a flow passage between an inlet (21) and an outlet (22) of the bearing housing (2).

5. A compressor according to claim 1, characterized in that the first buffer chamber (31) is arranged around the outer circumference of the bearing housing (2).

6. A compressor according to claim 5, wherein said buffer chamber (3) comprises at least two of said first buffer chambers (31).

7. A refrigeration system comprising a compressor as claimed in any one of claims 1 to 6.