Anti-falling filtering structure of automobile air conditioner compressor

Abstract

The utility model relates to the technical field of compressors, in particular to an anti-drop filtering structure of an automobile air conditioner compressor, which comprises a rear cover and a filter screen, the rear cover is provided with an air inlet channel communicated with a working cavity of the compressor, and the filter screen is arranged in the air inlet channel; a boss is further arranged in the air inlet channel, the boss is fixedly connected with the inner side wall of the air inlet channel, the boss is located at the end, facing the compressor working cavity, of the air inlet channel, the side, facing the filter screen, of the air inlet channel is arranged in a protruding mode, and the boss abuts against the bottom of the filter screen. The bosses are arranged in the air inlet channel to fix and block the filter screen, so that the filter screen can be effectively prevented from falling off due to vibration of the compressor or air pressure; the stable fixation of the filter screen ensures that impurities such as fibers can be effectively intercepted, and the impurities are prevented from entering the compressor, so that internal parts of the compressor are protected from being abraded or blocked, the working efficiency of the compressor is improved, the service life of the compressor is prolonged, the frequency of maintenance and replacement is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to an anti-dropout filter structure for automobile air-conditioning compressors. Background Art

[0002] The automobile air-conditioning compressor is the core component of the automobile air-conditioning system. The main function of the compressor in the refrigeration system is to compress the low-temperature and low-pressure gas sucked into the intake passage into high-temperature and high-pressure gas, providing power for the entire refrigeration cycle.

[0003] During the process of the compressor sucking in gas, it is continuously pressurized and then runs to the exhaust port. A part of the compressor lubricating cooling oil, fibers, fine particle impurities, etc. form a viscous mixture as the gas flows, and enters the air conditioner's circulation system together with the gas. This will not only deteriorate the engine oil and cause poor lubrication, but also make the moving parts such as the compressor cylinder body prone to wear and adhesion, and even cylinder jamming, which seriously affects the safe operation of the machine and reduces the working efficiency and service life of the air conditioner compressor.

[0004] In the related art, a filter is usually arranged in the air inlet to block and filter fibers, fine particles and impurities, thereby preventing juice from entering the compressor. However, during operation, due to the vibration of the compressor, the pressure of the gas entering the compressor and other reasons, the filter is easy to fall off from the installation position of the air inlet and fall into the compressor, affecting the normal operation of the automobile air-conditioning compressor.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or any form of implication that the information constitutes the prior art known to those skilled in the art. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an anti-drop filter structure for automobile air-conditioning compressor, so as to prevent the filter from dropping out and entering the compressor during the operation of the compressor, thereby ensuring the normal operation of the automobile air-conditioning compressor and improving the working efficiency and service life.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an anti-drop filter structure for an automobile air-conditioning compressor, comprising: a rear cover and a filter screen, the rear cover having an air intake passage connected to a compressor working chamber, the filter screen being arranged in the air intake passage;

[0008] Among them, a boss is also provided in the air intake channel, the boss is fixedly connected to the inner wall of the air intake channel, is located at one end of the air intake channel facing the compressor working chamber, and is raised toward one side of the filter screen, and the boss is abutted against the bottom of the filter screen.

[0009] Furthermore, an air inlet is connected to one end of the air inlet passage away from the compressor working chamber, and the aperture of the air inlet is larger than the aperture of the air inlet passage.

[0010] Furthermore, the filter screen is arranged in the air inlet passage from the air inlet, and an outer axial surface of one end facing the air inlet is arranged to fit with an inner axial surface of the air inlet passage.

[0011] Furthermore, the filter screen is a slot-shaped structure with an opening at one end, and a plurality of filter holes are evenly distributed on the filter screen.

[0012] Furthermore, the filtering hole is circular.

[0013] Furthermore, the filter screen includes a groove bottom, a groove wall and a groove opening, the filter holes are evenly distributed on the groove bottom and the groove wall, the groove bottom is located at one end of the groove wall facing the boss, and the end face of the groove bottom is abutted against the boss, the groove opening is a circular ring structure, arranged at one end of the groove wall facing the air inlet, and the outer wall of the groove opening is fitted with the inner wall of the air inlet channel.

[0014] Furthermore, the air inlet passage comprises an assembly section and a contraction section, the assembly section is connected to the air inlet, and the aperture of the assembly section is larger than the aperture of the contraction section.

[0015] Furthermore, the assembly section and the contraction section are connected via a step surface, the boss is arranged in the contraction section, and the filter screen is arranged in the assembly section.

[0016] Furthermore, the boss includes a fixing portion and a top connecting portion, the outer side of the fixing portion is arc-shaped and fixedly connected to the side wall of the contraction section, the inner side wall of the fixing portion is fixedly connected to one end of the top connecting portion, and the other end of the top connecting portion extends toward the end where the filter screen is located, and the end face abuts against the middle part of the filter screen.

[0017] Furthermore, the side of the top connection portion facing the filter screen is configured as an arc-shaped hemispherical surface.

[0018] The beneficial effects of the utility model are as follows: the utility model forms a fixed blocking effect on the filter screen by arranging a boss in the air intake passage, which can effectively prevent the filter screen from falling off due to compressor vibration or gas pressure; the stable fixation of the filter screen ensures that impurities such as fibers can be effectively intercepted to prevent impurities from entering the compressor, thereby protecting the internal components of the compressor from being worn or blocked, improving the working efficiency of the compressor, helping to extend the service life of the compressor, reducing the frequency of repair and replacement, and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of the anti-drop filter structure for the automobile air-conditioning compressor in the embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the filter screen in the embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the back cover in the embodiment of the utility model;

[0023] Figure 4 This is a schematic structural diagram of the rear cover at another angle in an embodiment of the utility model;

[0024] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0025] Figure numerals: 10, rear cover; 11, air inlet passage; 11a, assembly section; 11b, contraction section; 11c, step surface; 12, protrusion; 12a, fixing portion; 12b, top connection portion; 13, air inlet; 20, filter screen; 20a, filter hole; 21, groove bottom; 22, groove wall; 23, groove opening. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] like Figures 1 to 5 The automobile air-conditioning compressor anti-drop filter structure shown comprises: a rear cover 10 and a filter screen 20, the rear cover 10 has an air intake passage 11 connected to the compressor working chamber, and the filter screen 20 is arranged in the air intake passage 11;

[0030] Among them, a boss is also provided in the intake channel 11, which is fixedly connected to the inner wall of the intake channel 11, located at one end of the intake channel 11 facing the compressor working chamber, and a protrusion 12 is provided toward one side of the filter screen 20, and the boss is abutted against the bottom of the filter screen 20.

[0031] The utility model forms a fixed blocking effect on the filter 20 by arranging a boss in the air intake passage 11, which can effectively prevent the filter 20 from falling off due to compressor vibration or gas pressure; the stable fixation of the filter 20 ensures that impurities such as fibers can be effectively intercepted to prevent impurities from entering the compressor, thereby protecting the internal components of the compressor from being worn or blocked, improving the working efficiency of the compressor, helping to extend the service life of the compressor, reducing the frequency of repair and replacement, and reducing maintenance costs.

[0032] On the basis of the above embodiment, an end of the air intake channel 11 away from the working chamber of the compressor is connected to an air intake port 13, and the aperture of the air intake port 13 is larger than the aperture setting of the air intake channel 11, thereby increasing the gas flow rate entering the compressor and reducing the flow resistance of the gas when entering the compressor, thereby allowing more gas to pass through without affecting the filtration efficiency, increasing the air intake volume of the compressor, and helping to improve the working efficiency of the compressor; reducing energy loss and improving the energy efficiency ratio of the system.

[0033] On the basis of the above-mentioned embodiment, the filter screen 20 is arranged in the air inlet channel 11 from the air inlet port 13, and the outer axial surface facing one end of the air inlet port 13 is arranged in contact with the inner axial surface of the air inlet channel 11, so as to enhance the sealing performance, reduce gas leakage, and ensure that the gas is filtered through the filter screen 20; it is also convenient to assemble the filter screen 20 from the air inlet port 13 as well as to regularly inspect and clean it, so as to ensure the filtering effect of the filter screen 20 and extend its service life.

[0034] On the basis of the above-mentioned embodiment, the filter screen 20 is a groove-shaped structure with an opening at one end, and a plurality of filter holes 20a are evenly distributed on the filter screen 20; the groove-shaped structure with an opening at one end of the filter screen 20 can better withstand the impact and pressure of the airflow, thereby improving its durability, and at the same time can form a receiving effect on the impurities after being blocked, thereby avoiding the accumulation of impurities in the air intake channel 11, facilitating cleaning, and maintaining the filtering effect of the filter screen 20; the evenly distributed filter holes 20a can increase the passage area of ​​the airflow, reduce the airflow resistance, and improve the airflow passage rate, thereby improving the working efficiency of the compressor.

[0035] Based on the above embodiment, the filter hole 20a is circular; the air flow resistance of the circular channel is small, which helps the gas to pass through the filter 20 more smoothly, reduce energy consumption, and improve the working efficiency of the compressor; and the manufacturing and processing are relatively simple, which is convenient for large-scale production and maintenance.

[0036] On the basis of the above embodiment, the filter screen 20 includes a groove bottom 21, a groove wall 22 and a groove opening 23, and the filter holes 20a are evenly distributed on the groove bottom 21 and the groove wall 22. The groove bottom 21 is located at one end of the groove wall 22 facing the boss, and the end face of the groove bottom 21 is abutted against the boss. The groove opening 23 is a circular ring structure, which is arranged at one end of the groove wall 22 facing the air inlet 13, and the outer wall of the groove opening 23 is fitted with the inner wall of the air inlet channel 11; the end face of the groove bottom 21 is abutted against the boss, and the outer wall of the groove opening 23 is fitted with the inner wall of the air inlet channel 11, which enhances the fixation of the filter screen 20, reduces the risk of falling off due to vibration or airflow impact, and improves the reliability and safety of the compressor; the filter holes 20a evenly distributed on the groove bottom 21 and the groove wall 22 help the gas to pass through the filter screen 20 more smoothly, reduce the unevenness of the airflow, reduce the airflow resistance, and improve the airflow passing rate, thereby improving the working efficiency of the compressor.

[0037] On the basis of the above embodiment, the air intake passage 11 includes an assembly section 11a and a contraction section 11b, the assembly section 11a is connected to the air inlet 13, and the aperture of the assembly section 11a is larger than the aperture of the contraction section 11b; by changing the aperture of the assembly section 11a and the contraction section 11b, the distribution of the airflow before entering the compressor can be optimized, the unevenness of the airflow can be reduced, and the uniform compression of the gas inside the compressor can be improved; it is also convenient to assemble the filter 20 to ensure the stability of the filter 20 after assembly.

[0038] On the basis of the above embodiment, the assembly section 11a and the contraction section 11b are connected by a step surface 11c, the boss is arranged in the contraction section 11b, and the filter screen 20 is arranged in the assembly section 11a; the setting of the step surface 11c forms a transition between the assembly section 11a and the contraction section 11b, thereby increasing the overall stability and rigidity.

[0039] On the basis of the above embodiment, the boss includes a fixing portion 12a and a top connecting portion 12b, the outer side of the fixing portion 12a is arc-shaped and fixedly connected to the side wall of the contraction section 11b, the inner side wall of the fixing portion 12a is fixedly connected to one end of the top connecting portion 12b, the other end of the top connecting portion 12b extends toward the end where the filter screen 20 is located, and the end face abuts against the middle part of the filter screen 20; the arc-shaped fixing portion 12a design reduces the resistance of the airflow when passing through the boss, which helps to improve the flow efficiency of the gas; ensures that a seal is formed between the filter screen 20 and the air inlet channel 11 to prevent unfiltered air from directly entering the compressor without passing through the filter screen 20; and the fixed connection of the fixing portion 12a to the side wall of the contraction section 11b, as well as the connection to the top connecting portion 12b, form a solid structure, thereby improving the overall mechanical strength.

[0040] On the basis of the above embodiment, the side of the top connection portion 12b facing the filter is set to an arc-shaped hemispherical surface; the arc-shaped hemispherical top connection portion 12b provides more uniform support for the filter 20, which helps to maintain the shape and tension of the filter 20, and further reduces the contact area between the top connection portion 12b and the filter 20 while ensuring the supporting top connection, preventing the filter hole 20a from being blocked, thereby improving the flow rate and efficiency of the gas passing through the filter 20.

[0041] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An anti-drop filter structure for an automobile air-conditioning compressor, characterized in that: include: A rear cover and a filter screen, wherein the rear cover is provided with an air intake passage connected to a working chamber of the compressor, and the filter screen is arranged in the air intake passage; Among them, a boss is also provided in the air intake channel, the boss is fixedly connected to the inner wall of the air intake channel, is located at one end of the air intake channel facing the compressor working chamber, and is raised toward one side of the filter screen, and the boss is abutted against the bottom of the filter screen.

2. The anti-drop filter structure for automobile air-conditioning compressor according to claim 1, characterized in that: An air inlet is connected to one end of the air inlet passage away from the compressor working chamber, and the aperture of the air inlet is larger than the aperture of the air inlet passage.

3. The anti-drop filter structure for automobile air-conditioning compressor according to claim 2, characterized in that: The filter screen is arranged in the air inlet passage from the air inlet, and an outer axial surface facing one end of the air inlet is arranged in close contact with an inner axial surface of the air inlet passage.

4. The anti-drop filter structure for automobile air-conditioning compressor according to claim 3, characterized in that: The filter screen is a slot-shaped structure with one end open, and a plurality of filter holes are evenly distributed on the filter screen.

5. The anti-drop filter structure for automobile air-conditioning compressor according to claim 4, characterized in that: The filtering hole is circular.

6. The anti-drop filter structure for automobile air-conditioning compressor according to claim 5, characterized in that: The filter screen comprises a groove bottom, a groove wall and a groove opening, the filter holes are evenly distributed on the groove bottom and the groove wall, the groove bottom is located at one end of the groove wall facing the boss, and the end surface of the groove bottom is abutted against the boss, the groove opening is a circular ring structure, arranged at one end of the groove wall facing the air inlet, and the outer wall of the groove opening is fitted with the inner wall of the air inlet channel.

7. The anti-drop filter structure for automobile air-conditioning compressor according to claim 2, characterized in that: The air inlet passage comprises an assembly section and a contraction section, the assembly section is connected to the air inlet, and the aperture of the assembly section is larger than the aperture of the contraction section.

8. The automobile air-conditioning compressor anti-drop filter structure according to claim 7, characterized in that: The assembly section and the contraction section are connected via a step surface, the boss is arranged in the contraction section, and the filter screen is arranged in the assembly section.

9. The automobile air-conditioning compressor anti-drop filter structure according to claim 8, characterized in that: The boss includes a fixing portion and a top connection portion, the outer side of the fixing portion is arc-shaped and fixedly connected to the side wall of the contraction section, the inner side wall of the fixing portion is fixedly connected to one end of the top connection portion, the other end of the top connection portion extends toward the end where the filter screen is located, and the end face abuts against the middle of the filter screen.

10. The automobile air-conditioning compressor anti-drop filter structure according to claim 9, characterized in that: The side of the top connection portion facing the filter screen is configured as an arc-shaped hemispherical surface.

Images