A silencer for a compressor and a compressor

Abstract

The present invention provides a muffler for a compressor and a compressor. The compressor includes a cylinder head. The muffler includes a main muffler. The main muffler is disposed on the cylinder head. A main cavity is provided in the main muffler. A secondary muffler is provided in the main cavity of the main muffler. The secondary muffler includes a secondary cavity wall. The secondary cavity wall is connected to the cylinder head and / or the main cavity wall and forms a secondary cavity of the secondary muffler. A channel is provided on the secondary cavity wall. The openings at both ends of the channel are respectively connected and communicated with the secondary cavity of the secondary muffler and the main cavity of the main muffler. The secondary cavity of the secondary muffler is communicated with the main cavity of the main muffler through the channel. The secondary cavity wall is made of a high molecular polymer or a metal sheet metal part. The present invention effectively improves the transmission loss in the target frequency band and suppresses the noise of the indoor unit of the air conditioner.

Description

Technical Field

[0001] The present invention relates to the field of compressors, and more particularly, to a silencer for a compressor for reducing noise and a compressor having the same. Background Art

[0002] Compressors are widely used in production and daily life. However, the noise generated by compressors during operation seriously affects people's physical and mental health. Therefore, the treatment of compressor noise is urgent.

[0003] A silencer is a device that allows air flow to pass through while effectively attenuating noise. It is mainly used to control and reduce the noise radiated from the inlet and outlet of various air-powered equipment or transmitted along the pipeline. Silencers can be classified into resistive, reactive, composite, and variable-frequency silencers according to their principles. Resistive silencers have good mid- and high-frequency noise reduction performance, while reactive silencers have good low-frequency or low- to mid-frequency noise reduction performance, which can effectively achieve the effect of compressor noise treatment.

[0004] The silencer in a rotary compressor is an important noise reduction component. However, the existing silencer solutions have low noise reduction in some frequency bands and cannot meet the compressor noise requirements. The outer diameter and height of the silencer are restricted by the size of the upper cylinder head and the position of the motor and cannot be changed. Therefore, it is necessary to improve the inside of the silencer to enhance its noise reduction performance.

[0005] Therefore, the technical personnel in this field are committed to developing a silencer for a compressor that can effectively improve the transmission loss in the target frequency band and suppress the noise of the indoor unit of an air conditioner, and a compressor having the same. Summary of the Invention

[0006] Aiming at the problems in the prior art, the purpose of the present invention is to provide a silencer for a compressor and a compressor having the same, which effectively improve the transmission loss in the target frequency band and suppress the noise of the indoor unit of an air conditioner.

[0007] According to an aspect of the present invention, there is provided a silencer for a compressor. The compressor includes a cylinder head. The silencer includes a main silencer, which is disposed on the cylinder head. A main cavity is provided in the main silencer. A secondary silencer is provided in the main cavity of the main silencer. The secondary silencer includes a secondary cavity wall, which is connected to the cylinder head and / or the main cavity wall and forms a secondary cavity of the secondary silencer. A channel is provided on the secondary cavity wall. The openings at both ends of the channel are respectively connected and communicated with the secondary cavity of the secondary silencer and the main cavity of the main silencer. The secondary cavity of the secondary silencer is communicated with the main cavity of the main silencer through the channel. The secondary cavity wall is made of a high molecular polymer or a metal sheet metal part.

[0008] It is characterized in that: the high molecular polymer is plastic or rubber.

[0009] It is characterized in that: the secondary cavity wall is made by injection molding or stamping.

[0010] It is characterized in that: the main muffler includes a main cavity wall, the main cavity wall is connected to the cylinder head, and a main cavity of the main muffler is formed between the main cavity wall and the cylinder head.

[0011] It is characterized in that: a plurality of holes and / or tubes are provided on the secondary cavity wall, and the plurality of holes and / or tubes form a passage of the secondary muffler.

[0012] It is characterized in that: a plurality of holes or tubes are provided on the secondary cavity wall, and the plurality of holes or tubes and the main cavity wall or the cylinder head jointly form a passage of the secondary muffler.

[0013] It is characterized in that: the aperture sizes of the plurality of holes are the same as or different from each other.

[0014] It is characterized in that: the extending directions of the plurality of tubes are the same as or different from each other.

[0015] It is characterized in that: the number of the secondary cavities ≥ 1.

[0016] According to another aspect of the present invention, a compressor is provided, including the muffler for compressor described above.

[0017] A muffler for compressor and a compressor having the same according to the present invention effectively improve the transmission loss in the target frequency band and suppress the noise of the indoor unit of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent.

[0019] Figure 1 is a schematic diagram of the external structure of the muffler according to the embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the internal structure of the muffler for compressor according to the embodiment of the present invention;

[0021] Figures 3 - 6 is a schematic diagram of the structure of the muffler for compressor according to various embodiments of the present invention.

[0022] REFERENCE SIGNS

[0023] 1 Cylinder head

[0024] 2 Main cavity wall

[0025] 3 Secondary cavity

[0026] 4 Passage

[0027] 5 Exhaust port

[0028] 6 Secondary cavity wall Detailed implementation manners

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus their repetitive description will be omitted.

[0030] As Figure 1 shown, in an embodiment of the present invention, a silencer for a compressor and a compressor having the same are provided, preferably a rotary rotor compressor.

[0031] And in combination with as Figure 2 shown, the compressor includes a cylinder head 1. The silencer includes a main silencer and a secondary silencer. The main silencer is disposed on the cylinder head 1, and a main cavity serving as a sound-absorbing cavity is provided in the main silencer. The secondary silencer is disposed in the main cavity of the main silencer. A secondary cavity 3 serving as a sound-absorbing cavity is also provided in the secondary silencer. The main cavity of the main silencer and the secondary cavity 3 of the secondary silencer are connected and communicated through a channel 4 provided on the secondary silencer.

[0032] As Figure 1 shown, the main silencer includes a main cavity wall 2. The main cavity wall 2 is connected to the cylinder head 1.

[0033] A groove is formed in the shape of the main cavity wall 2 and covers the cylinder head 1. The space formed between the main cavity wall 2 and the cylinder head 1 is the main cavity of the main silencer. And in combination with as Figure 2 shown, the main cavity of the main silencer further includes the secondary cavity 3 of the secondary silencer. The secondary silencer can be one or more. The number of the secondary cavities 3 can be one or more. The secondary cavity 3 is located in the main cavity, and the secondary cavity 3 is communicated with the main cavity through the channel 4 of the secondary silencer, thereby forming a Helmholtz silencer and increasing the sound attenuation amount in a specific frequency band.

[0034] As Figure 2 shown, the secondary silencer includes a secondary cavity wall 6. The secondary cavity wall 6 is connected to the cylinder head 1 and / or the main cavity wall 2, and the space formed therebetween and serving as a sound-absorbing cavity can form the secondary cavity 3 of the secondary silencer.

[0035] Preferably, the secondary cavity wall 6 is made of a high molecular polymer or a metal sheet metal part. And it is formed by injection molding or stamping.

[0036] The design of the inner-layer cavity silencer formed by injection molding or stamping of the high molecular polymer or the metal part in the embodiment of the present invention can increase the sound attenuation amount in a specific frequency band and reduce the noise of the compressor unit.

[0037] As shown in Figures 2 - 4 it is preferred that the secondary cavity wall 6 is made of a polymer, preferably rubber or plastic. Rubber or plastic has a certain hardness and meets the hardness requirements. And it is preferably an engineering plastic. The polymer is formed into the secondary cavity wall 6 by injection molding or stamping.

[0038] And it is preferred that the secondary cavity wall 6 is connected to the cylinder head 1 to form the secondary cavity 3.

[0039] The shape of the secondary cavity wall 6 is a groove shape, and the space formed between the secondary cavity wall 6 and the cylinder head 1 is the secondary cavity 3. And it is preferred that the secondary cavity wall 6 is provided with a buckle, which is connected to the clamping position on the cylinder head 1 to facilitate installation on the cylinder head 1. And it is preferred that the internal components are pressed by the outer muffler, and the inner wall of the outer muffler is limited to position the components.

[0040] As shown in Figures 5 - 6 it is preferred that in the embodiment of the present invention, the secondary cavity wall 6 is a metal sheet metal part. The secondary cavity wall 6 is connected to the cylinder head 1 and the main cavity wall 2.

[0041] The shape of the secondary cavity wall 6 is a groove shape, and the space formed between the secondary cavity wall 6 and the cylinder head 1 and the main cavity wall 2 is the secondary cavity 3. And it is preferred that the mutual installation position of the secondary cavity wall 6 is determined by the positioning points of the main cavity wall 2, and the sheet metal part and the outer muffler are fixed by welding.

[0042] As shown in Figure 1 and Figure 5 it is preferred that in the embodiment of the present invention, the cylinder head 1 of the compressor is an upper cylinder head. An exhaust port 5 is further provided on the cylinder head 1. The secondary cavity 3 does not cover the exhaust port of the upper cylinder head, that is, the gas discharged from the exhaust port of the cylinder head 1 does not directly enter the secondary cavity 3.

[0043] As shown in Figure 5 it is preferred that in the embodiment of the present invention, a plurality of holes and / or pipes are provided on the secondary cavity wall 6. The plurality of holes and / or pipes together form the channel 4 of the secondary cavity 3 in the secondary muffler. The apertures of the plurality of holes are the same or different from each other, and can be evenly distributed or distributed in a sparse and dense pattern.

[0044] The number of pipes is 1 or more. The pipes form the channel 4 of the secondary cavity 3 in the secondary muffler, and the orientation and extension direction of the pipes can be determined according to the noise reduction frequency.

[0045] As shown in Figure 2 it is preferred that 2 pipes are provided on the secondary cavity wall 6. The pipes form the channel 4 of the secondary cavity 3 in the secondary muffler, and the 2 pipes both extend towards the outside of the secondary cavity 3.

[0046] In addition, as shown in Figure 3As shown, in the embodiment of the present invention, it is preferred that the main silencer and the secondary silencer are integrally formed, the secondary cavity 3 is integrally formed with the main cavity, and the secondary cavity wall 6 and the main cavity wall 2 are jointly formed.

[0047] The present invention will be described below with specific embodiments:

[0048] Embodiment 1

[0049] As Figure 1 and Figure 2 shown, a silencer for a compressor and a rotary rotor compressor having the same.

[0050] As Figure 1 shown, the compressor includes a cylinder head 1. The silencer includes a main silencer and a secondary silencer. The main silencer includes a main cavity wall 2. The main cavity wall 2 is connected to the cylinder head 1.

[0051] The shape of the main cavity wall 2 is a groove shape, and the space formed between the main cavity wall 2 and the cylinder head 1 is the main cavity of the silencer.

[0052] And in combination with as Figure 2 shown, the main cavity of the main silencer further includes 1 secondary silencer, and a secondary cavity wall 6 is provided inside the secondary silencer. The secondary cavity wall 6 is a component formed by plastic injection molding. The secondary cavity wall 6 is connected to the cylinder head 1.

[0053] The shape of the secondary cavity wall 6 is a groove shape, and the space formed between the secondary cavity wall 6 and the cylinder head 1 is the secondary cavity 3. A buckle is provided on the secondary cavity wall 6 and is connected to the clamping position on the cylinder head 1 through mutual connection, which is convenient for installation on the cylinder head 1. By pressing the inner components with the outer silencer and limiting the inner wall of the outer silencer, the positioning of the components is realized. A pipe with a semi-circular arc cross-section is provided on the secondary cavity 3, and the pipe and the cylinder head 2 jointly form a channel 4 of the secondary cavity 3, thereby forming a Helmholtz silencer to increase the noise reduction amount in a specific frequency band.

[0054] Embodiment 2

[0055] As Figure 1 and Figure 4 shown, a silencer for a compressor and a rotary rotor compressor having the same.

[0056] As Figure 1 shown, the compressor includes a cylinder head 1. The silencer includes a main cavity wall 2. The main cavity wall 2 is connected to the cylinder head 1.

[0057] The shape of the main cavity wall 2 is a groove shape, and the space formed between the main cavity wall 2 and the cylinder head 1 is the main cavity of the silencer.

[0058] And in combination with as Figure 4 shown, the main cavity of the silencer further includes 1 secondary cavity 3. The secondary cavity wall 6 is a component. The secondary cavity wall 6 is connected to the cylinder head 1.

[0059] The shape of the secondary cavity wall 6 is a groove shape, formed by plastic injection molding. A space is formed between the secondary cavity wall 6 and the cylinder head 1 as the secondary cavity 3. There are buckles on the secondary cavity wall 6, which are interconnected with the positions on the cylinder head 1 to facilitate installation on the cylinder head 1. The internal components are pressed by the outer muffler, and the inner wall of the outer muffler is limited to position the components.

[0060] There are 6 large holes on the secondary cavity wall 6, surrounded by a triangle. There are 5 small holes, arranged in a straight line. The 6 large holes and the 5 small holes together form the channel 4 of the secondary cavity 3.

[0061] The secondary cavity 3 is located in the main cavity. The secondary cavity 3 communicates with the main cavity through the channel 4, thus forming a Helmholtz muffler to increase the noise reduction amount in a specific frequency band.

[0062] Embodiment 3

[0063] As Figure 1 and Figure 3 shown in, a muffler for a compressor and a rotary rotor compressor having the same.

[0064] As Figure 1 shown in, the compressor includes a cylinder head 1. The muffler includes a main cavity wall 2. The main cavity wall 2 is connected to the cylinder head 1.

[0065] The shape of the main cavity wall 2 is a groove shape. A space is formed between the main cavity wall 2 and the cylinder head 1 as the main cavity of the muffler.

[0066] And in combination with as Figure 6 shown in, there is also 1 secondary cavity 3 formed by the secondary cavity wall 6 in the main cavity of the muffler. The secondary cavity wall 6 is integrally formed with the main cavity wall 2.

[0067] There is a pipe on the secondary cavity wall 6. The cross-section of the pipe is a semi-circular arc shape. The pipe extends towards the inside of the secondary cavity 3. The semi-circular arc-shaped pipe and the cylinder head 1 together form the channel 4 of the secondary cavity 3.

[0068] The secondary cavity 3 is located in the main cavity. The secondary cavity 3 communicates with the main cavity through the channel 4, thus forming a Helmholtz muffler to increase the noise reduction amount in a specific frequency band.

[0069] Embodiment 4

[0070] As Figure 1 、 Figure 5 and Figure 6 shown in, a muffler for a compressor and a rotary rotor compressor having the same.

[0071] As Figure 1 shown in, the compressor includes a cylinder head 1. The muffler includes a main cavity wall 2. The main cavity wall 2 is connected to the cylinder head 1.

[0072] The shape of the main cavity wall 2 is a groove shape, and a space is formed between the main cavity wall 2 and the cylinder head 1 as the main cavity of the silencer.

[0073] The main cavity of the silencer further includes a secondary cavity 3. The secondary cavity wall 6 is a sheet metal part. The secondary cavity wall 6 is connected to the cylinder head 1 and the main cavity wall 2.

[0074] The shape of the secondary cavity wall 6 is a groove shape and it is a metal sheet metal part. A space is formed between the secondary cavity wall 6 and the cylinder head 1 and the main cavity wall 2 as the secondary cavity 3. The mutual installation position of the secondary cavity wall 6 is determined by the positioning points of the main cavity wall 2, and the sheet metal part, the outer main silencer and the cylinder head 1 are fixed by welding.

[0075] A pipe and an opening are provided on the secondary cavity wall 6. The cross-section of the pipe is a semi-circular arc shape. The pipe extends towards the inside of the secondary cavity 3. The semi-circular arc-shaped pipe and the cylinder head 1 form a semi-circular channel, and the semi-circular channel and the opening on the secondary cavity wall 6 together form the channel 4 of the secondary cavity 3.

[0076] The secondary cavity 3 is located in the main cavity. The secondary cavity 3 communicates with the main cavity through the channel 4, thereby forming a Helmholtz silencer and increasing the noise reduction amount in a specific frequency band.

[0077] In summary, the silencer for a compressor and the compressor having the same according to the embodiments of the present invention increase the noise reduction amount in a specific frequency band and reduce the noise of a single compressor.

[0078] The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A silencer for a compressor, characterized in that, The compressor includes a cylinder head (1), the muffler includes a main muffler, the main muffler includes a main cavity wall (2), the main muffler is disposed on the cylinder head (1), a main cavity is provided in the main muffler, a secondary muffler is provided in the main cavity of the main muffler, the secondary muffler includes a secondary cavity wall (6), the secondary cavity wall (6) is connected to the cylinder head (1) and the main cavity wall (2) and forms a secondary cavity (3) of the secondary muffler, a channel (4) is provided on the secondary cavity wall (6), openings at both ends of the channel (4) are respectively connected and communicated with the secondary cavity (3) of the secondary muffler and the main cavity of the main muffler, the secondary cavity (3) of the secondary muffler is communicated with the main cavity of the main muffler through the channel (4), the secondary cavity wall (6) is made of a high molecular polymer or a metal sheet metal part, the secondary cavity (3) does not cover the exhaust port of the cylinder head; a plurality of holes and / or tubes are provided on the secondary cavity wall (6), and the plurality of holes or tubes and the main cavity wall (2) or the cylinder head (1) together form the channel (4) of the secondary muffler; the aperture sizes of the plurality of holes are the same as or different from each other; the extending directions of the plurality of tubes are the same as or different from each other.

2. The silencer for a compressor according to claim 1, characterized in that: The high molecular polymer is plastic or rubber.

3. The silencer for a compressor according to claim 1, characterized in that: The secondary cavity wall (6) is made by injection molding or stamping.

4. The silencer for a compressor according to claim 1, wherein: The main cavity wall (2) is connected to the cylinder head (1), and a main cavity of the main muffler is formed between the main cavity wall (2) and the cylinder head (1).

5. The silencer for a compressor according to claim 1, characterized in that: The number of the secondary cavities (3) ≥ 1.

6. A compressor, characterized in that: It includes a muffler for a compressor according to any one of claims 1 to 5.

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