A noise reduction element and an air conditioner abnormal noise improvement structure

Abstract

This utility model relates to a noise reduction element and an air conditioner abnormal noise improvement structure, comprising: a hollow main body component and a sealing plate. The main body component is conical, with both ends of the conical center line being open structures. The sealing plate is disposed on one end of the main body component and has several through holes communicating with the interior of the main body component. These through holes are used to divide the airflow across the entire cross-section into several airflows when airflow passes through. The noise reduction element and air conditioner abnormal noise improvement structure of this utility model, when the gaseous refrigerant flows through the high-pressure switch port, cuts the airflow flowing through the high-pressure valve port through the airflow cutting structure, changing the boundary conditions of the air column in the high-pressure valve pipeline; the expansion structure expands and rebounds with the change of air column pressure, thereby changing the air column structure inside the pipeline, thus avoiding air column resonance and the generation of abnormal noise.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a noise reduction element and a structure for improving abnormal noise in air conditioners. Background Technology

[0002] An air conditioner mainly consists of an outdoor unit, an indoor unit, and a refrigerant circulation pipeline connecting the outdoor and indoor units. The refrigerant circulation pipeline is equipped with functional components such as a compressor and an electronic expansion valve, so that the refrigerant can flow between the outdoor and indoor units through the refrigerant circulation pipeline, thereby achieving indoor heating or cooling by evaporation / condensation heat exchange in the heat exchanger of the outdoor or indoor unit.

[0003] R32 refrigerant is widely used in air conditioning products due to its environmental friendliness, energy efficiency, cost advantages, and high compatibility. While it possesses a certain degree of flammability, its safety risks have been effectively controlled through advanced detection and control technologies, as well as reasonable dosage design.

[0004] However, a method of adding a high-pressure switch to the high-pressure pipeline of the outdoor unit is used to prevent R32 refrigerant leakage. However, due to its structural characteristics, there is an air column in the high-pressure switch pipeline. When the airflow at its port reaches a certain pressure and velocity, it causes the air column in the pipeline to resonate, thereby producing a high-frequency "whistling" sound, which is transmitted to the indoor unit through the pipeline, thus affecting the perceived comfort. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problem of abnormal "whistling" sound in the pipeline caused by the compressor exhaust pressure and flow rate in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model provides a noise reduction element, including: a hollow main body and a sealing plate. The main body is a cone shape, and both ends of the cone center line of the main body are open structures. The sealing plate is disposed on one end of the main body and has a plurality of through holes. The plurality of through holes communicate with the interior of the main body and are used to divide the airflow of the complete cross section into several airflows when the airflow passes through.

[0007] In one embodiment of this utility model, the sealing plate is disposed on one side of the large end of the main body component.

[0008] In one embodiment of the present invention, the small end of the main body component away from the sealing plate is provided with a plurality of opening grooves, and the plurality of opening grooves separate the small end of the main body component into a plurality of independent elastic sheets, which expand outward when gas flows through the main body component.

[0009] In one embodiment of this utility model, an annular groove is provided on the outer circumferential wall of the main component near the end of the sealing plate.

[0010] In one embodiment of this utility model, the sealing plate has a circular cross-section, and the outer diameter of the sealing plate is larger than the outer diameter of the large end of the main component. The portion of the sealing plate extending out of the outer wall of the main component forms an annular boss.

[0011] In one embodiment of this utility model, the opening groove is a U-shaped groove, and the U-shaped opening of the opening groove is located at the small end of the main body component.

[0012] This utility model also provides a structure for improving abnormal noise in an air conditioner, including: a refrigerant pipeline, a high-pressure bypass pipeline, and a noise reduction device. The refrigerant pipeline contains a refrigerant substance. One end of the high-pressure bypass pipeline is connected to a high-pressure switch, and the other end of the high-pressure bypass pipeline is connected to the refrigerant pipeline. The noise reduction device is disposed in the end of the high-pressure bypass pipeline that connects to the refrigerant pipeline. The noise reduction device is the noise reduction element mentioned above. The noise reduction device is used to prevent air column resonance caused by the refrigerant substance in the refrigerant pipeline passing through the high-pressure bypass pipeline.

[0013] In one embodiment of this utility model, an annular protrusion is provided on the inner wall of the high-pressure bypass pipeline near the refrigerant pipeline end, and the annular protrusion is disposed in an annular groove for positioning the noise reduction device.

[0014] In one embodiment of this utility model, the annular boss is fitted to the end of the high-pressure bypass pipeline.

[0015] In one embodiment of this utility model, the main body component is made of copper, and the larger end of the main body component faces the side of the refrigerant pipeline.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0017] The noise reduction element and air conditioner abnormal noise improvement structure described in this utility model, when the gaseous refrigerant flows through the high-pressure switch port, the airflow cutting structure cuts the airflow flowing through the high-pressure valve port, changing the boundary conditions of the gas column in the high-pressure valve pipeline; the expansion structure expands and rebounds with the change of gas column pressure, thereby changing the gas column structure in the pipeline, thus avoiding gas column resonance and thus avoiding abnormal noise. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the noise reduction element in a preferred embodiment of the present invention;

[0020] Figure 2This is a cross-sectional view of the noise reduction element in a preferred embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure for improving abnormal air conditioning noise in a preferred embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the high-pressure bypass pipeline and noise reduction device in a preferred embodiment of the present invention;

[0023] Figure 5 This is a cross-sectional view of the high-pressure bypass pipeline and noise reduction device in a preferred embodiment of the present invention;

[0024] Figure 6 This is a preferred embodiment of the present invention. Figure 5 A magnified view of a portion of the image;

[0025] Figure 7 This is a preferred embodiment of the present invention. Figure 6 A magnified view of a portion of the image.

[0026] Explanation of reference numerals in the accompanying drawings: Main component 1, annular groove 11, annular boss 12, sealing plate 2, through hole 21, opening groove 22, elastic sheet 23, refrigerant pipeline 100, high-pressure bypass pipeline 200, annular protrusion 201, noise reduction device 300. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0028] Reference Figure 1 , 2 As shown, the noise reduction element of this utility model includes: a hollow main body component 1 and a sealing plate 2. The main body component 1 is conical, and both ends of the conical center line of the main body component 1 are open structures. The sealing plate 2 has a circular cross-section and is coaxially arranged with the main body component 1. The sealing plate 2 is located at one end of the main body component 1. The sealing plate 2 has several through holes 21, which communicate with the interior of the main body component 1. The several through holes 21 are used to divide the airflow of the complete cross-section into several airflows when airflow passes through them. Preferably, the through holes 21 are circular holes. When the airflow passes through the several through holes 21, the mesh structure of the several through holes 21 cuts the airflow, changes the excitation conditions of the air column, and avoids the generation of abnormal "noise".

[0029] In the above structure, the small end of the main component 1 away from the sealing plate 2 is provided with several opening slots 22. The opening slots 22 separate the small end of the main component 1 into several independent elastic sheets 23. The elastic sheets 23 expand outward when gas flows through the main component 1. The expansion structure, together with the several through holes 21 that cut the airflow, changes the way the air column structure is changed, avoiding the occurrence of abnormal "whistling". This noise reduction element has a simple structure, is easy to install, and has a significant effect.

[0030] Preferably, the opening groove 22 is a U-shaped groove, and the U-shaped opening of the opening groove 22 is located at the small end of the main body component 1. A plurality of opening grooves 22 are arranged in a circular array with the central axis of the main body component 1 as the center.

[0031] Specifically, the sealing plate 2 is disposed on one side of the larger end of the main body component 1. The main body component 1 is tapered with a gradually decreasing cross-sectional area from the end where the sealing plate 2 is disposed to the other end, and the interior of the main body component 1 is also configured as a tapered cavity structure.

[0032] In the above structure, an annular groove 11 is provided on the outer circumference of the main component 1 near the end of the sealing plate 2. The annular groove 11 is an arc-shaped groove and is recessed inward. The annular groove 11 cooperates with the protrusion on the pipe on which the main component 1 is installed to position the main component 1.

[0033] In the above structure, the outer diameter of the sealing plate 2 is larger than the outer diameter of the large end of the main component 1, and the portion of the sealing plate 2 extending out of the outer wall of the main component 1 forms an annular boss 12.

[0034] Reference Figure 3-7 As shown, an air conditioner abnormal noise improvement structure includes: a refrigerant pipeline 100, a high-pressure bypass pipeline 200, and a noise reduction device 300. A refrigerant medium flows within the refrigerant pipeline 100. One end of the high-pressure bypass pipeline 200 is connected to a high-pressure switch, and the other end of the high-pressure bypass pipeline 200 is connected to the refrigerant pipeline 100. The noise reduction device 300 is disposed within the end of the high-pressure bypass pipeline 200 connected to the refrigerant pipeline 100. The noise reduction device 300 is the noise reduction element and is used to prevent air column resonance caused by the refrigerant medium in the refrigerant pipeline 100 passing through the high-pressure bypass pipeline 200. The high-pressure bypass pipe 200 is equivalent to a sealed air column. When the refrigerant in the refrigerant pipe 100 blows through the high-pressure switch port, the pressure and flow rate will reach a certain condition and excite the air column to resonate, emitting high-frequency abnormal noise. By setting a noise reduction device 300 at the high-pressure switch port, the airflow will flow through several through holes 21 and put pressure on the air column inside. When the pressure increases, the expansion structure composed of several independent elastic plates 23 will expand with the increase of pressure. At this time, the shape of the air column will be affected and changed.

[0035] In the above structure, an annular protrusion 201 is provided on the inner wall of the high-pressure bypass pipeline 200 near the refrigerant pipeline 100. The annular protrusion 201 is disposed in the annular groove 11 for positioning the noise reduction device 300. The annular protrusion 201 and the annular groove 11 cooperate with each other to limit the axial displacement of the noise reduction device 300.

[0036] In the above structure, the annular boss 12 is fitted to the end of the high-pressure bypass pipeline 200. The annular boss 12 defines the installation position of the main component 1, preventing the main component 1 from entering the high-pressure bypass pipeline 200 completely.

[0037] In the above structure, the main component 1 is made of copper, so the main component 1 can be formed by stamping. The main component 1 is positioned within the high-pressure bypass pipe 200 with its large end facing the refrigerant pipe 100.

[0038] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A noise reduction element, characterized in that, include: The main body and the sealing plate are hollow inside. The main body is conical and both ends of the conical center line of the main body are open structures. The sealing plate is set on one end of the main body and has several through holes. The several through holes are connected to the interior of the main body and are used to divide the airflow of the whole cross section into several airflows when the airflow passes through.

2. The noise reduction element according to claim 1, characterized in that: The sealing plate is located on one side of the large end of the main component.

3. The noise reduction element according to claim 1 or 2, characterized in that: The main component has several opening slots at its small end away from the sealing plate. These opening slots separate the small end of the main component into several independent elastic sheets. The elastic sheets expand outward when gas flows through the main component.

4. The noise reduction element according to claim 3, characterized in that: The main component has an annular groove on its outer circumferential wall near the end of the sealing plate.

5. The noise reduction element according to claim 4, characterized in that: The sealing plate has a circular cross-section, and its outer diameter is larger than the outer diameter of the large end of the main component. The portion of the sealing plate extending out of the outer wall of the main component forms an annular boss.

6. The noise reduction element according to claim 3, characterized in that: The opening groove is a U-shaped groove, and the U-shaped opening of the opening groove is located at the small end of the main component.

7. A structure for improving abnormal noise in an air conditioner, comprising: The refrigerant pipeline, the high-pressure bypass pipeline, and the noise reduction device are provided. The refrigerant pipeline contains a refrigerant medium flowing through it. One end of the high-pressure bypass pipeline is connected to a high-pressure switch, and the other end of the high-pressure bypass pipeline is connected to the refrigerant pipeline. The noise reduction device is disposed within the end of the high-pressure bypass pipeline connected to the refrigerant pipeline. The noise reduction device is characterized by being a noise reduction element as described in any one of claims 4-6, and the noise reduction device is used to prevent air column resonance caused by the refrigerant medium passing through the high-pressure bypass pipeline.

8. The air conditioner abnormal noise improvement structure according to claim 7, characterized in that: The high-pressure bypass pipeline has an annular protrusion on the inner wall of the end near the refrigerant pipeline. The annular protrusion is set in an annular groove for positioning the noise reduction device.

9. The air conditioner abnormal noise improvement structure according to claim 8, characterized in that: The annular boss is fitted to the end of the high-pressure bypass pipeline.

10. The air conditioner abnormal noise improvement structure according to claim 9, characterized in that: The main component is made of copper, and the larger end of the main component faces the refrigerant pipeline.

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