Air supply structure of compressor and compressor

Abstract

The present invention provides an air-inflation structure of a compressor and a compressor. The air-inflation structure of the compressor comprises: a partition, a flange and a cylinder body with an inner cavity, the partition is arranged between the flange and the cylinder body, so that the flange is connected to the cylinder body through the partition; an air-inflation chamber that can be communicated with the inner cavity is arranged on the partition, a first air-inflation channel that can be communicated with the air-inflation chamber is arranged on the flange, a valve plate is arranged in the air-inflation chamber, and the valve plate can move in the air-inflation chamber to separate or conduct the first air-inflation channel from the air-inflation chamber. The present invention has the advantages of reasonable design and simple structure, can reduce the volume of the back pressure chamber, thereby improving the isentropic efficiency of the compressor, reducing the power consumption of the compressor, and can also reduce the manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an air replenishing structure of a compressor and a compressor. Background Art

[0002] With the continuous progress of science and technology and the increasing level of productivity, compressors are being used more and more widely in the field of refrigeration technology.

[0003] The existing air replenishment structures of compressors are all to set an air replenishment cavity on the flange, set an air replenishment channel on the partition to connect the air replenishment cavity with the inner cavity of the compressor cylinder body, and set a valve plate in the air replenishment cavity to realize air replenishment in the inner cavity of the compressor cylinder body, so that a back pressure cavity is formed between the valve plate and the inner cavity of the compressor cylinder body. Since the air replenishment cavity is set on the flange, and the valve plate is set in the air replenishment cavity, the distance between the valve plate and the inner cavity of the compressor cylinder body is relatively far, and the volume of the back pressure cavity is relatively large, which in turn affects the air intake volume of the inner cavity of the compressor cylinder body, reduces the isentropic efficiency of the compressor, and thus increases the power consumption of the compressor. At the same time, in the process of manufacturing the flange, it is necessary to ensure that the flange has sufficient thickness to meet the requirements of setting the air replenishment cavity, so there is a disadvantage of high manufacturing cost of the flange. Summary of the invention

[0004] The main purpose of the present invention is to provide an air replenishing structure for a compressor and a compressor, which can reduce the volume of the back pressure chamber, thereby improving the isentropic efficiency of the compressor, reducing the power consumption of the compressor, and also reducing the manufacturing cost.

[0005] In one aspect, the present invention provides a compressor air supply structure, comprising: a partition, a flange and a cylinder body with an inner cavity, wherein the partition is arranged between the flange and the cylinder body, so that the flange is connected to the cylinder body through the partition;

[0006] The partition is provided with an air-inflation chamber which can be communicated with the inner cavity, the flange is provided with a first air-inflation channel which can be communicated with the air-inflation chamber, and a valve plate is provided in the air-inflation chamber. The valve plate can move in the air-inflation chamber to isolate or connect the first air-inflation channel with the air-inflation chamber.

[0007] Preferably, the flange has a connecting end surface, and the first air supply channel forms a first air supply port on the connecting end surface;

[0008] The partition has a first end surface facing the connecting end surface, the air supplement chamber forms an opening on the first end surface, and the first air supplement port is located within a range on the connecting end surface corresponding to the opening.

[0009] Preferably, the valve plate can be switched between a first position closing the first air supplement port and a second position opening the first air supplement port.

[0010] Preferably, an elastic component is further provided in the air-inflation chamber, and two ends of the elastic component are respectively connected to the valve plate and the partition plate, so as to drive the valve plate to cover the first air-inflation port by its own elastic force.

[0011] Preferably, the elastic component is a compression spring.

[0012] Preferably, the inner wall of the air replenishing chamber facing the opening is a bottom wall, and two ends of the elastic component abut against the bottom wall and the valve plate respectively.

[0013] Preferably, the air supplement chamber is cylindrical in shape, and a circular opening is formed on the first end surface; the first air supplement port is circular in shape, and its center position corresponds to the center position of the opening.

[0014] Preferably, the valve plate is cylindrical in shape;

[0015] Assume that the diameter of the valve plate is d1, the diameter of the air-injection chamber is d2, and the diameter of the first air-injection port is d3, wherein d2>d1>d3.

[0016] Preferably, a second air supplement channel is provided on the partition plate, and the air supplement chamber can be communicated with the inner cavity of the cylinder body through the first air supplement channel.

[0017] Preferably, the partition has a second end face facing the inner cavity, the second gas supplementation channel forms a second gas supplementation port on the second end face, and the second gas supplementation port is located within a range corresponding to the second end face and the inner cavity.

[0018] Preferably, the area of ​​the first gas supplement port is S1, the cross-sectional area of ​​the gas supplement chamber is S2, and the area of ​​the second gas supplement port is S3, wherein S2≥S3≥S1.

[0019] Another aspect of the present invention provides a compressor, comprising an air replenishing structure of the compressor having any of the above technical features.

[0020] The air-inflating structure of the compressor of the present invention adopts a technical scheme in which an air-inflating chamber capable of communicating with the inner cavity is arranged on the partition, a first air-inflating channel capable of communicating with the air-inflating chamber is arranged on the flange, a valve plate is arranged in the air-inflating chamber, and the valve plate can move in the air-inflating chamber, so as to isolate or conduct the first air-inflating channel from the air-inflating chamber. The volume of the back-pressure chamber can be reduced, thereby improving the isentropic efficiency of the compressor, reducing the power consumption of the compressor, and at the same time reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the air replenishing structure (valve plate open state) of the compressor provided by the present invention;

[0023] Figure 2 yes Figure 1 Schematic diagram of the valve plate in closed state;

[0024] Figure 3 yes Figure 1 Schematic diagram of the decomposition of

[0025] Figure 4 yes Figure 1 Schematic diagram of the partition structure in FIG.

[0026] Figure 5 yes Figure 1 Schematic diagram of flange structure in;

[0027] In the figure: 1. partition; 11. air supply chamber; 111. opening; 112. bottom wall; 12. first end face; 13. second air supply channel; 131. second air supply port; 14. second end face; 2. flange; 21. first air supply channel; 211. first air supply port; 22. connecting end face; 3. cylinder body; 31. inner cavity; 4. valve plate; 5. elastic component. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0030] like Figure 1 , 2As shown in Figure 3, a compressor air supply structure includes: a partition 1, a flange 2 and a cylinder body 3 with an inner cavity 31. The partition 1 is arranged between the flange 2 and the cylinder body 3, so that the flange 2 is connected to the cylinder body 3 through the partition 1. The partition 1 is provided with an air supply chamber 11 that can communicate with the inner cavity 31, and the flange 2 is provided with a first air supply channel 21 that can communicate with the air supply chamber 11. A valve plate 4 is arranged in the air supply chamber 11, and the valve plate 4 can move in the air supply chamber 11, so as to separate or connect the first air supply channel 21 with the air supply chamber 11.

[0031] Since the prior art sets the air-inflation chamber on the flange, the valve plate set in the air-inflation chamber is far away from the inner cavity of the cylinder body, so the volume of the formed back-pressure chamber is large, and the present embodiment sets the air-inflation chamber 11 on the partition 1, so that the distance between the valve plate 4 and the inner cavity 31 of the cylinder body 3 is closer than that of the prior art, thereby reducing the volume of the back-pressure chamber, thereby improving the isentropic efficiency of the compressor, reducing the power consumption of the compressor, and improving the efficiency of the compressor. At the same time, since there is no need to set the air-inflation chamber 11 on the flange 2, the flange 2 can be made thinner during production, thereby reducing the production cost.

[0032] Preferably, if Figure 4 As shown, the flange 2 has a connecting end surface 22, and the first air supply channel 21 forms a first air supply port 211 on the connecting end surface 22; Figure 5 As shown, the partition 1 has a first end surface 12 facing the connection end surface 22, the air replenishment chamber 11 forms an opening 111 on the first end surface 12, and the first air replenishment port 211 is located within a range corresponding to the opening 111 on the connection end surface 22. In this way, after the refrigerant flows out from the first air replenishment port 211, it can directly enter the air replenishment chamber 11 through the opening 111.

[0033] In actual manufacturing, the shape of the air replenishment chamber 11 can be cylindrical, and a circular opening 111 is formed on the first end surface 12, and the shape of the first air replenishment port 211 can be circular, and the center position of the circle corresponds to the center position of the opening 111. In this way, the tightness of the valve plate 4 covering the first air replenishment port 211 can be ensured. Specifically, Figure 2 As shown, the valve plate 4 is cylindrical in shape; assuming that the diameter of the valve plate 4 is d1, the diameter of the air supply chamber 11 is d2, and the diameter of the first air supply port 211 is d3, wherein d2>d1>d3.

[0034] In actual operation, the valve plate 4 can switch between a first position covering (ie closing) the first air supply port 211 and a second position away from (ie opening) the first air supply port 211 to achieve the conversion of the compression process and the air supply process of the compressor.

[0035] Furthermore, if Figure 1, 2 As shown in FIG. 3 , an elastic component 5 is also provided in the air replenishment chamber 11, and the two ends of the elastic component 5 are respectively connected to the valve plate 4 and the partition plate 1, so as to drive the valve plate 4 to cover the first air replenishment port 211 by its own elastic force. The elastic component 5 can be a compression spring. The specific arrangement of the elastic component 5 is as follows: Figure 4 As shown in , the inner wall of the air replenishment chamber 11 facing the opening 111 is the bottom wall 112, and the two ends of the elastic component 5 are respectively abutted against the bottom wall 112 and the valve plate 4. When the compressor inhales, the gas pressure in the inner cavity 31 is low pressure. At this time, the combined force of the gas pressure in the inner cavity 31 and the elastic component 5 is less than the gas pressure in the first air replenishment channel 21, and the valve plate 4 is away from the first air replenishment port 211. The gas in the first air replenishment channel 21 can enter the inner cavity 31 through the air replenishment chamber 11, thereby realizing the air replenishment of the inner cavity 31. As the roller in the inner cavity 31 rotates, the gas pressure in the inner cavity 31 gradually rises. When the gas pressure in the first air replenishment channel 21 is less than the combined force of the gas pressure in the inner cavity 31 and the elastic component 5, the valve plate 4 moves toward the first air replenishment port 211 under the combined force of the gas pressure in the inner cavity 31 and the elastic component 5 until it covers the first air replenishment port 211. At this time, the gas cannot enter the inner cavity 31 through the air replenishment chamber 11.

[0036] As an implementation method, Figure 1 , 2 As shown in Figures 3 and 4, the partition 1 is provided with a second air supply channel 13, and the air supply chamber 11 can be connected with the inner cavity 31 of the cylinder body 3 through the first air supply channel 21. Specifically, the partition 1 has a second end face 14 facing the inner cavity 31, and the second air supply channel 13 forms a second air supply port 131 on the second end face 14, and the second air supply port 131 is located within the range corresponding to the second end face 14 and the inner cavity 31. It should be noted that in order to improve the compression efficiency of the compressor, the specific position of the second air supply port 131 needs to meet the position where the second air supply port 131 cannot be connected with the inner circle of the stick and the compression chamber in the inner cavity 31 at any angle of the roller rotation.

[0037] In actual manufacturing, the area of ​​the first gas replenishing port 211 is S1, the cross-sectional area of ​​the gas replenishing chamber 11 is S2, and the area of ​​the second gas replenishing port 131 is S3, wherein S2≥S3≥S1.

[0038] Another aspect of the present invention provides a compressor, including the air replenishing structure of the compressor described in the embodiment.

[0039] The above embodiments enable the present invention to have the advantages of reasonable design, simple structure, and the ability to reduce the volume of the back pressure chamber, thereby improving the isentropic efficiency of the compressor, reducing the power consumption of the compressor, and also reducing the manufacturing cost.

[0040] The above description is only an 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 substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A compressor air supply structure, characterized in that: include: A partition (1), a flange (2) and a cylinder (3) having an inner cavity (31), wherein the partition (1) is arranged between the flange (2) and the cylinder (3) so that the flange (2) is connected to the cylinder (3) through the partition (1); The partition plate (1) is provided with an air-injection chamber (11) which can be communicated with the inner cavity (31); the flange (2) is provided with a first air-injection channel (21) which can be communicated with the air-injection chamber (11); a valve plate (4) is provided in the air-injection chamber (11); the valve plate (4) can move in the air-injection chamber (11) to isolate or connect the first air-injection channel (21) to the air-injection chamber (11).

2. The air replenishing structure according to claim 1, characterized in that: The flange (2) has a connecting end surface (22), and the first air supply channel (21) forms a first air supply port (211) on the connecting end surface (22); The partition plate (1) has a first end surface (12) facing the connecting end surface (22), the air replenishment chamber (11) forms an opening (111) on the first end surface (12), and the first air replenishment port (211) is located within a range on the connecting end surface (22) corresponding to the opening (111).

3. The air replenishing structure according to claim 2, characterized in that: The valve plate (4) is capable of switching between a first position for closing the first air supply port (211) and a second position for opening the first air supply port (211).

4. The air replenishing structure according to claim 3, characterized in that: An elastic component (5) is also provided in the air replenishment chamber (11), and two ends of the elastic component (5) are respectively connected to the valve plate (4) and the partition plate (1), so as to drive the valve plate (4) to cover the first air replenishment port (211) by its own elastic force.

5. The air replenishing structure according to claim 4, characterized in that: The elastic component (5) is a compression spring.

6. The air replenishing structure according to claim 5, characterized in that: The inner wall of the air replenishing chamber (11) facing the opening (111) is a bottom wall (112), and the two ends of the elastic component (5) are respectively abutted against the bottom wall (112) and the valve plate (4).

7. The air replenishing structure according to claim 2, characterized in that: The air replenishment chamber (11) is cylindrical in shape, and a circular opening (111) is formed on the first end surface (12); the first air replenishment port (211) is circular in shape, and its center position corresponds to the center position of the opening (111).

8. The air replenishing structure according to claim 7, characterized in that: The valve plate (4) is cylindrical in shape; Assuming that the diameter of the valve plate (4) is d1, the diameter of the air supply chamber (11) is d2, and the diameter of the first air supply port (211) is d3, d2>d1>d3.

9. The air replenishing structure according to any one of claims 1 to 8, characterized in that: The partition plate (1) is provided with a second air supplement channel (13). The air supplement chamber (11) can be connected to the inner cavity (31) of the cylinder body (3) through the first air supplement channel (21).

10. The air replenishing structure according to claim 9, characterized in that: The partition plate (1) has a second end surface (14) facing the inner cavity (31), and the second gas supply channel (13) forms a second gas supply port (131) on the second end surface (14), and the second gas supply port (131) is located within a range corresponding to the second end surface (14) and the inner cavity (31).

11. The air replenishing structure according to claim 10, characterized in that When the flange (2) has a connecting end surface (22), and the first gas supply channel (21) forms a first gas supply port (211) on the connecting end surface (22), the area of ​​the first gas supply port (211) is assumed to be S1, the cross-sectional area of ​​the gas supply chamber (11) is S2, and the area of ​​the second gas supply port (131) is S3, wherein S2≥S3≥S1.

12. A compressor, characterized in that: The invention comprises an air replenishing structure for a compressor as claimed in any one of claims 1 to 11.

Images