Parallel resonance type suction silencer for refrigerator compressor

Abstract

The utility model discloses a parallel resonance type suction silencer for a refrigerator compressor, which comprises a shell, the shell comprises an upper cavity cover and a lower cavity seat, a cavity partition plate is connected between the upper cavity cover and the lower cavity seat, an inner cavity of the shell is divided into an upper cavity and a lower cavity through the cavity partition plate, the top of the upper cavity cover is connected with an exhaust pipe, and the top of the lower cavity is connected with an exhaust pipe. One side of the lower cavity seat is connected with an air suction pipe, the cavity partition plate is connected with a communicating pipe assembly communicating the upper cavity with the lower cavity, the communicating pipe assembly comprises a plurality of communicating pipes connected in parallel, each communicating pipe is provided with a plurality of resonant cavity slits, and the resonant cavity slits in the communicating pipes are partitioned in different independent spaces through a plurality of partition plates. The design of the communicating pipes connected in parallel is adopted, holes are formed in the pipe walls, and meanwhile the partition plates are added to divide the space; according to the design, the air suction efficiency of the silencer can be improved, and the characteristic noise reduction capacity in a wide frequency band can be improved through the resonance effect of the Helmholtz cavity; and the flow channels among different cavity spaces have the noise reduction effect of the expansion cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator compressor mufflers. Specifically, it relates to a parallel resonance type intake muffler for a refrigerator compressor. Background Technique

[0002] As the most important component in the entire refrigeration cycle, the performance and noise level of a refrigerator compressor greatly affect the performance and noise of the refrigerator. With the rapid development of the economy, the growing concept of a better life of people has gradually changed, and energy-saving, efficient and low-noise refrigerators have gradually become the favorites in the new era refrigeration equipment market. How to reduce the noise level of a refrigerator compressor has gradually become the research and development focus in the refrigeration industry.

[0003] The noise sources of a compressor can be divided into three types according to their characteristics: mechanical noise, air flow noise, and electromagnetic noise. Among them, air flow noise is an important component of the compressor noise, and intake pulsation noise is the main noise source of the compressor air flow noise. To achieve a good noise reduction effect and ensure that the refrigeration performance and COP of the compressor are not affected, reactive intake mufflers are widely used in the compressor industry. However, most of the existing intake mufflers have a narrow noise reduction frequency band and cannot ensure that the intake efficiency reaches the target value, and unnecessary pressure loss and resistance loss are generated by the refrigerant in the intake muffler. Content of the Utility Model

[0004] In view of the above technical problems in the related art, the utility model provides a parallel resonance type intake muffler for a refrigerator compressor, which can solve the above problems.

[0005] To achieve the above technical purpose, the technical solution of the utility model is realized as follows:

[0006] A parallel resonance type intake muffler for a refrigerator compressor includes a housing, the housing includes an upper cavity cover and a lower cavity seat, a cavity partition is connected between the upper cavity cover and the lower cavity seat, the inner cavity of the housing is separated into an upper cavity and a lower cavity by the cavity partition, an exhaust pipe is connected to the top of the upper cavity cover, an intake pipe is connected to one side of the lower cavity seat, a connecting pipe assembly for connecting the upper cavity and the lower cavity is connected to the cavity partition, the connecting pipe assembly includes a plurality of parallel connecting pipes, a plurality of resonance cavity slits are formed on the connecting pipes, and the resonance cavity slits on the plurality of connecting pipes are separated into different independent spaces by a plurality of partition plates.

[0007] Further, the connecting pipe assembly includes at least two connecting pipes.

[0008] Further, the partition plates are vertical partition plates, inclined partition plates or horizontal partition plates.

[0009] Further, the connecting pipe assembly includes a first connecting pipe, a second connecting pipe, and a third connecting pipe connected in parallel.

[0010] Further, the partition plate includes a first vertical partition plate and a second vertical partition plate arranged vertically, and the lower chamber is divided into a first lower chamber space, a second lower chamber space, and a third lower chamber space by the first vertical partition plate and the second vertical partition plate.

[0011] Further, the resonance cavity slit on the first connecting pipe is located in the first lower chamber space, the resonance cavity slit on the second connecting pipe is located in the second lower chamber space, and the resonance cavity slit on the third connecting pipe is located in the third lower chamber space.

[0012] Further, the shape of the resonance cavity slit is circular, oval, or square, and the number of resonance cavity slits on each connecting pipe is 2 to 8.

[0013] Further, the upper chamber and the lower chamber are connected through the connecting pipe, the upper chamber is connected to the outside through the exhaust pipe, and the lower chamber is connected to the outside through the suction pipe.

[0014] Advantages of the present utility model: The present application adopts a design of connecting pipes connected in parallel, with holes opened on the pipe walls and the space is divided by a partition plate; this design can not only improve the air intake efficiency of the muffler, but also utilize the resonance effect of the Helmholtz cavity to improve the characteristic noise reduction ability within a wide frequency band; at the same time, the flow channels between different chamber spaces have the noise reduction effect of an expansion chamber, which can also enhance the sound absorption performance in the characteristic frequency band to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] The following will further describe the present utility model in detail with reference to the drawings.

[0017] Figure 1 is a schematic structural diagram of a parallel resonance type intake muffler for a refrigerator compressor according to an embodiment of the present utility model;

[0018] Figure 2 is a perspective view of a parallel resonance type intake muffler for a refrigerator compressor according to an embodiment of the present utility model;

[0019] Figure 3 is a schematic structural diagram of an intake muffler in the prior art;

[0020] Figure 4 It is a comparison chart of the noise reduction volume between the intake muffler of the embodiment of the present utility model and the intake muffler of the prior art comparative example.

[0021] In the figure:

[0022] 100, upper cavity cover; 200, lower cavity seat; 210, first lower cavity space; 220, second lower cavity space; 230, third lower cavity space; 300, chamber partition; 400, resonance cavity slit; 500, connecting pipe assembly; 510, connecting pipe one; 520, connecting pipe two; 530, connecting pipe three; 610, vertical partition one; 620, vertical partition two; 700, exhaust pipe; 800, intake pipe. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0024] As Figure 1-2 shown, according to the present utility model, a parallel resonance type intake muffler for a refrigerator compressor is disclosed, including a housing. The housing includes an upper cavity cover 100 and a lower cavity seat 200. A chamber partition 300 is connected between the upper cavity cover 100 and the lower cavity seat 200. The inner cavity of the housing is divided into an upper cavity and a lower cavity by the chamber partition 300. An exhaust pipe 700 is connected to the top of the upper cavity cover 100, and an intake pipe 800 is connected to one side of the lower cavity seat 200. A connecting pipe assembly 500 for connecting the upper cavity and the lower cavity is connected to the chamber partition 300. The connecting pipe assembly 500 includes a plurality of parallel connecting pipes, and a plurality of resonance cavity slits 400 are opened on the connecting pipes. The resonance cavity slits 400 on the plurality of connecting pipes are separated in different independent spaces by a plurality of partition plates.

[0025] Embodiment 1:

[0026] As Figure 3 shown is a structural schematic diagram of an intake muffler in the prior art. Based on this comparative example, the present application redesigned the connecting pipes, utilized the noise reduction mechanism of the parallel resonance cavity, utilized the noise reduction characteristics of the parallel pipeline and the microporous resonance principle, and re-divided the internal space of the muffler with partition plates. As Figure 4Through experimental verification, it can not only ensure the sound absorption ability in the medium and low frequencies, but also broaden the sound absorption frequency range. This kind of muffler is not restricted by space, can be used for various models of compressors, and compared with the comparative example, it has better sound absorption effect in the medium and low frequency characteristics and also better high-frequency sound absorption performance.

[0027] In the present application, the connecting pipe assembly 500 branches into different parallel pipelines starting from the inlet, resonance cavity slits 400 are opened on the pipe walls of each pipeline, and partition plates are arranged at different positions in the lower chamber to spatially allocate the parallel connecting pipes and the resonance cavity slits 400 on the pipelines. By using the Helmholtz resonance effect, the position, size and quantity of the allocated space are appropriately adjusted to improve the noise reduction ability of the intake muffler. Finally, the parallel pipelines converge at the topmost part of the connecting pipe assembly 500 and enter the upper chamber. There is a noise reduction effect of the expansion chamber in the flow channels between different chamber spaces, which can also enhance the sound absorption performance in the characteristic frequency band to a certain extent.

[0028] In the present application, the number of parallel connecting pipes is 2 or more.

[0029] In the present application, the partition plate can be and is not limited to vertical partition plates, inclined partition plates, horizontal partition plates, etc.

[0030] The resonance cavity slits in the present application can be circular, elliptical, irregular or other shapes, and the number of openings in each connecting pipe is 2 - 8.

[0031] In the present application, the outlet port of the connecting pipe assembly 500 can be connected to the inner pipe orifice part of the suction pipe 800, or a certain distance and offset angle can be maintained.

[0032] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A parallel resonance type intake muffler for a refrigerator compressor, comprising a housing, the housing including an upper cavity cover (100) and a lower cavity seat (200), a cavity partition plate (300) being connected between the upper cavity cover (100) and the lower cavity seat (200), the inner cavity of the housing being divided into an upper cavity and a lower cavity by the cavity partition plate (300), an exhaust pipe (700) being connected to the top of the upper cavity cover (100), and an intake pipe (800) being connected to one side of the lower cavity seat (200), characterized in that, A communication pipe assembly (500) that connects the upper chamber and the lower chamber is connected to the chamber partition (300). The communication pipe assembly (500) includes a plurality of parallel communication pipes, and a plurality of resonance chamber slits (400) are formed in the communication pipes. The resonance chamber slits (400) on the plurality of communication pipes are separated in different independent spaces by a plurality of partition plates.

2. The parallel resonance type intake muffler for a refrigerator compressor according to claim 1, characterized in that, The communication pipe assembly (500) includes at least two of the communication pipes.

3. The parallel resonance type intake muffler for a refrigerator compressor according to claim 2, characterized in that, The partition plates are vertical partition plates, inclined partition plates or horizontal partition plates.

4. The parallel resonance type intake muffler for a refrigerator compressor according to claim 3, wherein The communication pipe assembly (500) includes a first communication pipe (510), a second communication pipe (520) and a third communication pipe (530) connected in parallel.

5. The parallel resonance type intake muffler for a refrigerator compressor according to claim 4, characterized in that, The partition plates include a first vertical partition plate (610) and a second vertical partition plate (620) arranged vertically. The lower chamber is separated into a first lower chamber space (210), a second lower chamber space (220) and a third lower chamber space (230) by the first vertical partition plate (610) and the second vertical partition plate (620).

6. The parallel resonance type intake muffler for a refrigerator compressor according to claim 5, characterized in that, The resonance chamber slits (400) on the first communication pipe (510) are located in the first lower chamber space (210), the resonance chamber slits (400) on the second communication pipe (520) are located in the second lower chamber space (220), and the resonance chamber slits (400) on the third communication pipe (530) are located in the third lower chamber space (230).

7. A parallel resonance type intake muffler for a refrigerator compressor according to claim 1, characterized in that, The shape of the resonance chamber slit (400) is circular, oval or square, and the number of resonance chamber slits (400) on each communication pipe is 2 to 8.

8. A parallel resonance type intake muffler for a refrigerator compressor according to claim 1, characterized in that, The upper chamber and the lower chamber are connected through the communication pipe. The upper chamber is connected to the outside through the exhaust pipe (700), and the lower chamber is connected to the outside through the suction pipe (800).

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