A liquid accumulator partition with a sound deadening chamber and a compressor

Abstract

The application provides a liquid accumulator partition plate with a sound damping cavity and a compressor thereof, the partition plate is provided with a through hole, an air inlet pipe penetrates through the through hole and is located in the through hole of the partition plate, the outer periphery of the partition plate is connected with the inner wall of a shell, the partition plate comprises a neck portion and a bottom portion which are connected with each other, the neck portion is provided with a first cavity with a ring-shaped cross section, the bottom portion is provided with a second cavity with a ring-shaped cross section, one end of the first cavity is open and communicates with the shell, and the other end of the first cavity is connected with the second cavity and communicates with the second cavity. The technical scheme of the application effectively improves the transmission loss of noise and reduces airflow noise.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of compressor motor, in particular to a liquid accumulator baffle with a sound absorbing cavity and a compressor. BACKGROUND

[0002] The rotor compressor is driven by an engine or a motor (mostly a motor), and another rotor (also known as a female rotor or a concave rotor) is driven by an oil film formed by oil injection from the main rotor or by synchronous gears at the ends of the main rotor and the concave rotor.

[0003] The liquid accumulator is an important component of the compressor, which plays a role of storage, gas-liquid separation, filtration, sound absorption and refrigerant buffering.

[0004] During operation of the rotor compressor, the main body vibration is transmitted to the liquid accumulator, causing vibration noise; meanwhile, pressure pulsation generated during flow of the refrigerant in the liquid accumulator also causes airflow noise of the liquid accumulator, which is even transmitted to the air conditioning system. SUMMARY

[0005] In view of the problems in the prior art, the present application aims to provide a liquid accumulator baffle with a sound absorbing cavity and a compressor, which effectively improves noise transmission loss and reduces airflow noise.

[0006] According to an aspect of the present application, a liquid accumulator baffle with a sound absorbing cavity is provided, which is suitable for a liquid accumulator including a shell and a gas inlet pipe arranged in the shell, the baffle is provided with a through hole, the gas inlet pipe passes through the through hole and is located in the through hole of the baffle, the outer periphery of the baffle is connected with the inner wall of the shell, the baffle includes a neck portion and a bottom portion connected with each other, the neck portion is provided with a first cavity with a ring-shaped cross section, the bottom portion is provided with a second cavity with a ring-shaped cross section, one end of the first cavity is open and communicates with the shell, and the other end of the first cavity is connected with the second cavity and communicates therewith.

[0007] Preferably, the first cavity and the second cavity with a ring-shaped cross section are both provided with holes, and the gas inlet pipe sequentially passes through the holes of the second cavity and the first cavity and is located in the holes of the second cavity and the first cavity.

[0008] Preferably, the neck portion of the baffle has a ring-shaped cross section.

[0009] Preferably, the bottom portion of the baffle has a ring-shaped cross section.

[0010] Preferably, the baffle is further provided with a plurality of through holes.

[0011] Preferably, the plurality of through holes are located on the outer periphery of the baffle.

[0012] Preferably, the cross-sectional shape of the through-flow holes is circular or semi-circular.

[0013] Preferably, the through-flow holes are uniformly distributed on the outer periphery of the baffle.

[0014] Preferably, the cross-sectional area of the through-flow holes is S3, the cross-sectional area of the second cavity is S2, and 0.17≤S3 / S2≤0.25.

[0015] According to another aspect of the present application, there is provided a compressor comprising the baffle with a sound-attenuating cavity as described above.

[0016] The baffle with a sound-attenuating cavity and the compressor thereof according to the present application can effectively improve the transmission loss of noise and reduce airflow noise. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings.

[0018] Figure 1 is a structural schematic diagram of a baffle with a sound-attenuating cavity according to an embodiment of the present application;

[0019] Figure 2 is a structural schematic diagram of a baffle with a sound-attenuating cavity according to an embodiment of the present application;

[0020] Figure 3 is a structural schematic diagram of a baffle with a sound-attenuating cavity according to an embodiment of the present application;

[0021] Figure 4 is a structural schematic diagram of a baffle with a sound-attenuating cavity according to an embodiment of the present application;

[0022] Figure 5 is a structural schematic diagram of a baffle with a sound-attenuating cavity according to an embodiment of the present application;

[0023] Figure 6 is a graph of noise transmission loss of Example 1 and Comparative Example 1 of the present application, in which the abscissa represents the frequency of noise and the ordinate represents the noise loss.

[0024] REFERENCE NUMERALS

[0025] 1 reservoir

[0026] 2 housing

[0027] 3 intake pipe

[0028] 4 baffle

[0029] 5 neck

[0030] 6 bottom

[0031] 7 first cavity

[0032] 8 second cavity

[0033] 9 through hole DETAILED DESCRIPTION

[0034] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the several views and the description of the figures.

[0035] As shown in Figure 1 , in the embodiments of the present application, a liquid accumulator partition plate with sound attenuation cavities and a compressor comprising the same are provided. The compressor comprises a liquid accumulator 1.

[0036] The liquid accumulator 1 comprises a housing 2 and an inlet pipe 3. The inlet pipe 3 is arranged in the housing 2, preferably vertically in the housing 2 as shown in Figure 1 .

[0037] In combination with as shown in Figure 2 , the partition plate 4 is in the shape of a ring column with a through hole in the middle, i.e. a column with a cross-sectional shape of a ring.

[0038] The inlet pipe 3 passes through the through hole and is located in the through hole of the partition plate 4.

[0039] The outer periphery of the partition plate 4 is connected to the inner wall of the housing 2, preferably in a sealed and fixed manner, and is preferably sealed and fixed by welding.

[0040] As shown in Figure 2 , the partition plate 4 comprises a neck 5 and a bottom 6 connected to each other. Preferably, the neck 5 and the bottom 6 are arranged from top to bottom as shown in Figure 1 and Figure 2 .

[0041] The neck 5 is provided with a first cavity 7 with a cross-sectional shape of a ring, and the bottom 6 is provided with a second cavity 8 with a cross-sectional shape of a ring.

[0042] One end of the first cavity 7, preferably the end facing the top of the liquid accumulator, is open and communicates with the inside of the housing 2, and the other end of the first cavity 7 is connected to and communicates with one end of the second cavity 8, and the other end of the second cavity 8 is located in the bottom 6 of the partition plate 4. In this way, two connected sound attenuation cavities with a cross-sectional shape of a ring are formed in the partition plate. The sound attenuation cavities are open at the end facing the top of the liquid accumulator.

[0043] The present invention relates to a liquid reservoir partition with a silencing cavity and its compressor. Through the silencing cavity with a special structure, the transmission loss of noise can be effectively improved and the airflow noise can be reduced.

[0044] like Figure 1 and Figure 2 As shown in the embodiment of the present invention, preferably, both the first cavity 7 and the second cavity 8, which have an annular cross-sectional shape, are provided with holes in the middle. The air intake pipe 3 is as follows... Figure 1 The holes shown pass sequentially from bottom to top through the second cavity 8 and the first cavity 7, and are located within the holes of the second cavity 8 and the first cavity 7. That is, the intake pipe 3 is surrounded by the partition 4 and the first cavity 7 and the second cavity 8 therein.

[0045] like Figure 1 and Figure 2 As shown, in an embodiment of the invention, the neck 5 of the partition 4 is preferably cylindrical in shape, with a first cylindrical cavity 7 located within the neck 5 of the cylindrical partition 4. The bottom 6 of the partition 4 is cylindrical in shape, with a second cylindrical cavity 8 located within the bottom 6 of the annular partition 4. That is, the overall shape of the partition 4 is also similar to a trumpet, formed by two connected cylindrical structures.

[0046] like Figure 3 As shown in the embodiment of the present invention, the partition 4 is preferably provided with a plurality of flow holes 9. Preferably, the flow holes 9 are located at the bottom 6 of the partition 4, and the flow holes 9 can connect the two sides of the partition 4. The refrigerant flows into the lower part of the reservoir cylinder through one or more flow holes formed on the inner wall of the reservoir and the side of the partition.

[0047] Furthermore, preferably, a plurality of flow holes 9 are located on the outer periphery of the partition plate. The cross-sectional shape is circular, semi-circular, or other shapes. Preferably, a plurality of flow holes 9 are evenly distributed on the outer periphery of the partition plate 4, located between the partition plate 4 and the inner wall of the housing 2.

[0048] like Figure 4 As shown, in an embodiment of the present invention, the first cavity 7 is preferably shaped like a cylindrical ring with a circular cross-section. The area of ​​the cross-section of the first cavity 7 is S1. And combined with... Figure 2 As shown, the height of the first cavity 7 is L1.

[0049] For example Figure 4 As shown, in an embodiment of the present invention, the cross-sectional shape of the flow hole 9 is preferably semi-circular, and the area of ​​the cross-section of the flow hole 9 is S3.

[0050] like Figure 5 As shown, in an embodiment of the present invention, the cross-sectional shape of the second cavity 8 is preferably an annular shape minus the cross-section of the flow hole. The area of ​​the cross-section of the second cavity 8 is S2. And in conjunction with... Figure 2 As shown, the height of the first cavity 7 is L2.

[0051] In order to eliminate the noise transmission loss of certain frequency bands, the size of the sound attenuation cavity can be adjusted. Under the condition of meeting the specific ratio, the noise transmission loss of certain frequency bands can be obviously increased.

[0052] In addition, it is preferred that 0.17≤S3 / S2≤0.25, which can obviously increase the noise transmission loss.

[0053] Controlled experiment

[0054] Example 1 of the present application verifies by experiment that, by adding a baffle with a sound attenuation cavity to the original liquid reservoir of Comparative Example 1, when S1 / (L1×S2×L2)≥800 (length, area units: mm, mm 2 ), as shown in Figure 6 , the transmission loss of multiple frequency bands is obviously increased relative to the original design.

[0055] In summary, the technical solution of the embodiment of the present application effectively improves the transmission loss of noise and reduces airflow noise.

[0056] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be considered as falling within the protection scope of the present application.

Claims

1. A liquid reservoir partition with a silencing cavity, suitable for liquid reservoirs, characterized in that: The liquid reservoir includes a housing and an air inlet pipe. The air inlet pipe is disposed inside the housing. A through hole is provided on the partition plate. The air inlet pipe passes through the through hole and is located in the through hole of the partition plate. The outer periphery of the partition plate is connected to the inner wall of the housing. The partition plate includes a connected neck and a bottom. A first cavity with an annular cross-sectional shape is provided in the neck, and a second cavity with an annular cross-sectional shape is provided in the bottom. One end of the first cavity is open and communicates with the inside of the housing, and the other end of the first cavity is connected to and communicates with the second cavity.

2. The liquid reservoir partition with a silencing cavity according to claim 1, characterized in that: The first cavity and the second cavity, which are both annular in cross-section, are provided with holes in the middle. The air intake pipe passes through the holes of the second cavity and the first cavity in sequence and is located in the holes of the second cavity and the first cavity.

3. The liquid reservoir partition with a silencing cavity according to claim 1, characterized in that: The cross-sectional shape of the neck of the partition is annular.

4. The liquid reservoir partition with a silencing cavity according to claim 1, characterized in that: The bottom of the partition has a ring-shaped cross-section.

5. The liquid reservoir partition with a silencing cavity according to claim 1, characterized in that: The partition plate is also provided with several flow holes.

6. The liquid reservoir partition with a silencing cavity according to claim 5, characterized in that: The plurality of flow holes are located on the outer periphery of the partition.

7. The liquid reservoir partition with a silencing cavity according to claim 5, characterized in that: The cross-sectional shape of the plurality of flow holes is circular or semi-circular.

8. The liquid reservoir partition with a silencing cavity according to claim 5, characterized in that: The plurality of flow holes are evenly distributed on the outer periphery of the partition.

9. The liquid reservoir partition with a silencing cavity according to claim 5, characterized in that: The cross-sectional area of ​​the plurality of flow holes is S3, and the cross-sectional area of ​​the second cavity is S2, where 0.17≤S3 / S2≤0.

25.

10. A compressor, characterized in that: Includes the reservoir partition with a silencing cavity as described in any one of claims 1 to 9.

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