Noise reduction pump sound insulation structure of rotor type compressor

Abstract

The utility model belongs to the field of sound insulation structures, and particularly relates to a noise reduction pump sound insulation structure of a rotor type compressor, which comprises a casing, the top of the casing is fixedly connected with an air outlet pipe, the side wall of the casing is fixedly connected with an air inlet pipe, and the tail end of the air inlet pipe is fixedly connected with a transition tank. The top of the transition tank is in threaded connection with a connecting nozzle, a backing ring is fixedly connected to the lower portion of the inner side of the transition tank, a sound absorption sleeve is placed at the upper end of the backing ring and slidably connected to the inner side of the transition tank, and a conical block is fixedly connected to the inner ring wall of the sound absorption sleeve. The transition tank is arranged at the tail end of the air inlet pipe of the machine shell, the sound absorption sleeve is stuffed into the transition tank, the conical blocks are arranged on the inner wall of the sound absorption sleeve, and the connecting nozzle is installed at the top of the transition tank, so that when air enters through the connecting nozzle, sound absorption treatment can be conducted on the air by the sound absorption sleeve and the conical blocks, and the sound absorption effect is good. And noise generated when the compressor sucks air is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation structures, specifically a noise reduction pump sound insulation structure for a rotary compressor. Background Technology

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas; it is the heart of a refrigeration system. A rotary compressor, also known as a rolling piston compressor or fixed vane compressor, is a type of rotary compressor. It uses a small cylindrical rotor rotating within a cylinder to change the working volume of the cylinder, thereby achieving gas intake, compression, and exhaust; therefore, it also belongs to the category of positive displacement compressors. For example, there is the invention patent application with publication number CN104295496A.

[0003] When a rotary compressor is operating, a large amount of air enters the intake pipe at once, which can easily generate significant noise. Furthermore, airborne particles also enter the compressor along with the air, contributing to the noise as well. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide a noise reduction pump sound insulation structure for a rotary compressor, which solves the problem that when a rotary compressor is working, a large amount of air enters the intake pipe at an instant, and the airflow easily generates a lot of noise. At the same time, it also solves the problem that particulate matter in the air also enters the compressor along with the air and will also generate a certain amount of noise.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a noise reduction pump sound insulation structure for a rotary compressor, comprising a housing, an air outlet pipe fixedly connected to the top of the housing, an air inlet pipe fixedly connected to the side wall of the housing, a transition tank fixedly connected to the end of the air inlet pipe, a connecting nozzle threadedly connected to the top of the transition tank, a gasket fixedly connected to the lower inner side of the transition tank, a sound-absorbing sleeve placed at the upper end of the gasket and slidably connected to the inner side of the transition tank, a cone block fixedly connected to the inner wall of the sound-absorbing sleeve, a filter screen slidably connected to the inner side of the connecting nozzle, and an anti-clogging mechanism provided on the inner side of the connecting nozzle and above the filter screen.

[0006] Preferably, a connecting rod is fixedly connected to the bottom of the filter screen, and a retaining ring is fixedly connected to the bottom of the connecting rod. The retaining ring abuts against the filter screen and is slidably connected to the inner side of the transition tank. The retaining ring serves to limit the movement of the sound-absorbing sleeve.

[0007] Preferably, a flow guide is fixedly connected to the inner wall of the connector, and the flow guide is made of stainless steel. The flow guide helps to divert air entering the connector.

[0008] Preferably, the anti-clogging mechanism includes multiple fixed rods fixedly connected to the inner wall of the connecting nozzle. A fixed sleeve is fixedly connected to all the fixed rods. A rotating shaft is mounted inside the fixed sleeve via a bearing. An impeller is fixedly connected to one end of the rotating shaft, and a hollow shell is fixedly connected to the other end. A brush is slidably connected to the inner side of the hollow shell, and the brush contacts the filter screen. This anti-clogging mechanism provides an anti-clogging function when the filter screen filters air.

[0009] Preferably, a second spring is provided on the inner side of the hollow shell. One end of the second spring is fixedly connected to the brush, and the other end of the second spring is fixedly connected to the inner surface of the hollow shell. By providing the second spring, the elastic force can be applied to the brush, ensuring that it remains in contact with the filter screen at all times.

[0010] Preferably, a mounting base is fixedly connected to the inner wall of the connecting nozzle. The mounting base contacts the filter screen, and a sliding pin is slidably connected inside the mounting base. The sliding pin passes through the filter screen and is slidably connected to it. A locking block is fixedly connected to the sliding pin, and the locking block engages with the filter screen. The sliding pin and locking block provide a locking function for the filter screen.

[0011] Preferably, a guide rod is fixedly connected inside the mounting base. The guide rod passes through and is slidably connected to the sliding pin. A spring is sleeved on the outer side of the guide rod. One end of the spring is fixedly connected to the sliding pin, and the other end is fixedly connected to the inner surface of the mounting base. The guide rod and spring provide elastic support for the sliding pin.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model sets a transition tank at the end of the air inlet pipe of the housing, inserts a sound-absorbing sleeve into the transition tank, and sets multiple cones on the inner wall of the sound-absorbing sleeve. Then, a connecting nozzle is installed on the top of the transition tank. In this way, when air enters through the connecting nozzle, it can be absorbed by the sound-absorbing sleeve and cones, thereby reducing the noise of the compressor when it draws in air.

[0014] 2. This utility model uses a detachable filter screen inside the connecting nozzle to filter particulate matter in the air, preventing particulate matter from entering the compressor and further reducing noise. In addition, the airflow during intake blows the impeller, allowing the brush coaxial with the impeller to clean the filter screen, thereby preventing the filter screen from becoming clogged. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 For the present utility model Figure 1A partial structural front sectional view;

[0017] Figure 3 For the present utility model Figure 2 A magnified view of the local structure;

[0018] Figure 4 For the present utility model Figure 3 Enlarged view of the A-section structure;

[0019] Figure 5 For the present utility model Figure 2 A schematic diagram of the sound-absorbing sleeve structure.

[0020] In the diagram: 1. Housing; 2. Exhaust pipe; 3. Intake pipe; 4. Transition tank; 5. Connecting nozzle; 6. Gasket; 7. Sound-absorbing sleeve; 71. Cone block; 8. Filter screen; 9. Anti-clogging mechanism; 10. Connecting rod; 11. Baffle ring; 12. Flow guide; 13. Mounting base; 14. Sliding pin; 15. Locking block; 16. Guide rod; 17. Spring 1; 91. Fixing rod; 92. Fixing sleeve; 93. Rotating shaft; 94. Impeller; 95. Hollow shell; 96. Brush; 97. Spring 2. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 A noise reduction pump sound insulation structure for a rotary compressor includes a housing 1, an air outlet pipe 2 fixedly connected to the top of the housing 1, an air inlet pipe 3 fixedly connected to the side wall of the housing 1, a transition tank 4 fixedly connected to the end of the air inlet pipe 3, a connecting nozzle 5 threadedly connected to the top of the transition tank 4, a gasket 6 fixedly connected to the lower inner side of the transition tank 4, a sound-absorbing sleeve 7 placed at the upper end of the gasket 6, and the sound-absorbing sleeve 7 slidably connected to the inner side of the transition tank 4, and a cone block 71 fixedly connected to the inner ring wall of the sound-absorbing sleeve 7.

[0023] Please see Figure 2-4A filter screen 8 is slidably connected to the inner side of the connecting nozzle 5. A connecting rod 10 is fixedly connected to the bottom of the filter screen 8, and a retaining ring 11 is fixedly connected to the bottom of the connecting rod 10. The retaining ring 11 abuts against the filter screen 8 and is slidably connected to the inner side of the transition tank 4. The retaining ring 11 provides a limiting function for the sound-absorbing sleeve 7. A guide shroud 12, made of stainless steel, is fixedly connected to the inner wall of the connecting nozzle 5. The guide shroud 12 guides the air entering through the connecting nozzle 5. A mounting base 13 is fixedly connected to the inner wall of the connecting nozzle 5. The mounting base 13 contacts the filter screen 8. A sliding pin 14 is slidably connected inside the mounting base 13. The sliding pin 14 passes through the filter screen 8 and is slidably connected to it. A locking block 15 is fixedly connected to the sliding pin 14 and engages with the filter screen 8. The sliding pin 14 and the locking block 15 provide a locking function for the filter screen 8. A guide rod 16 is fixedly connected inside the mounting base 13. The guide rod 16 passes through and is slidably connected to the sliding pin 14. A spring 17 is sleeved on the outer side of the guide rod 16. One end of the spring 17 is fixedly connected to the sliding pin 14, and the other end of the spring 17 is fixedly connected to the inner surface of the mounting base 13. The guide rod 16 and the spring 17 provide elastic support for the sliding pin 14.

[0024] Please see Figure 3 An anti-clogging mechanism 9 is provided inside the connecting nozzle 5 and above the filter screen 8. This mechanism prevents clogging when the filter screen 8 filters air. The anti-clogging mechanism 9 includes multiple fixing rods 91 fixedly connected to the inner wall of the connecting nozzle 5. A fixing sleeve 92 is fixedly connected to all the fixing rods 91. A rotating shaft 93 is mounted inside the fixing sleeve 92 via a bearing. An impeller 94 is fixedly connected to one end of the rotating shaft 93, and a hollow shell 95 is fixedly connected to the other end. A brush 96 is slidably connected to the inner side of the hollow shell 95 and contacts the filter screen 8. A second spring 97 is provided inside the hollow shell 95. One end of the second spring 97 is fixedly connected to the brush 96, and the other end is fixedly connected to the inner surface of the hollow shell 95. The spring 97 applies elastic force to the brush 96, ensuring it remains in contact with the filter screen 8.

[0025] The specific implementation process of this utility model is as follows: In use, firstly, the sound-absorbing sleeve 7 is inserted into the transition tank 4, and then the connecting nozzle 5 is screwed onto the transition tank 4. At this time, the retaining ring 11 is inserted into the transition tank 4 and abuts against the sound-absorbing sleeve 7. In this way, air enters through the connecting nozzle 5 and is filtered by the filter screen 8. Subsequently, it is absorbed by the sound-absorbing sleeve 7 and the cone block 71, reducing the noise when the compressor is drawing in. In addition, by trapping particulate matter in the air through the filter screen 8, particulate matter can be prevented from entering the compressor, further reducing noise. Moreover, the airflow during intake blows the impeller 94, so that the brush 96 coaxial with the impeller 94 can clean the filter screen 8, thereby preventing the filter screen 8 from becoming clogged.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise reducing pump sound insulation structure of a rotary compressor comprising a casing (1), characterized in that: The top of the shell (1) is fixedly connected with an air outlet pipe (2), the sidewall of the shell (1) is fixedly connected with an air inlet pipe (3), the tail end of the air inlet pipe (3) is fixedly connected with a transition tank (4), the top of the transition tank (4) is threadedly connected with a connecting nozzle (5), the inner side of the transition tank (4) is fixedly connected with a gasket ring (6), the upper end of the gasket ring (6) is placed with a sound-absorbing sleeve (7) which is slidingly connected to the inner side of the transition tank (4), the inner ring wall of the sound-absorbing sleeve (7) is fixedly connected with a taper block (71), the inner side of the connecting nozzle (5) is slidingly connected with a filter screen (8), the inner side of the connecting nozzle (5) and above the filter screen (8) is provided with an anti-blocking mechanism (9).

2. The noise reduction pump sound isolation structure of a rotary compressor according to claim 1, wherein: The bottom of the filter screen (8) is fixedly connected with a connecting rod (10), the bottom of the connecting rod (10) is fixedly connected with a blocking ring (11) which is in abutment with the filter screen (8) and is slidingly connected to the inner side of the transition tank (4).

3. The noise reduction pump sound isolation structure of a rotary compressor according to claim 1, wherein: The inner wall of the connecting nozzle (5) is fixedly connected with a flow guide cover (12) which is made of stainless steel.

4. The noise reducing pump sound isolation structure of a rotary compressor according to claim 1, wherein: The anti-blocking mechanism (9) comprises a plurality of fixed rods (91) which are fixedly connected to the inner wall of the connecting nozzle (5), a plurality of the fixed rods (91) are jointly and fixedly connected with a fixed sleeve (92), the inside of the fixed sleeve (92) is provided with a rotating shaft (93) which is installed through a bearing, one end of the rotating shaft (93) is fixedly connected with an impeller (94), the other end of the rotating shaft (93) is fixedly connected with a hollow shell (95), the inner side of the hollow shell (95) is slidingly connected with a brush (96) which is in contact with the filter screen (8).

5. The noise reducing pump acoustical isolation structure of a rotary compressor of claim 4, wherein: The inner side of the hollow shell (95) is provided with a spring two (97), one end of the spring two (97) is fixedly connected with the brush (96), the other end of the spring two (97) is fixedly connected to the inner surface of the hollow shell (95).

6. The noise reducing pump acoustical isolation structure of a rotary compressor of claim 1, wherein: The inner wall of the connecting nozzle (5) is fixedly connected with a mounting seat (13) which is in contact with the filter screen (8), the inside of the mounting seat (13) is slidingly connected with a sliding pin (14) which penetrates through the filter screen (8) and is in sliding connection with the filter screen (8), the sliding pin (14) is fixedly connected with a clamping block (15) which is clamped with the filter screen (8).

7. The noise reducing pump acoustical isolation structure of a rotary compressor of claim 6, wherein: The inside of the mounting seat (13) is fixedly connected with a guide rod (16) which penetrates through the sliding pin (14) and is in sliding connection with the sliding pin (14), the outer side of the rod body of the guide rod (16) is sleeved with a spring one (17), one end of the spring one (17) is fixedly connected with the sliding pin (14), the other end of the spring one (17) is fixedly connected to the inner surface of the mounting seat (13).

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