CN112901453B

CN112901453B - Five-cavity air suction muffler of compressor and compressor

Info

Publication number: CN112901453B
Application number: CN202110129397.4A
Authority: CN
Inventors: 孙晓东; 常伟; 赵松柏; 高儒兵; 张亚飞; 张建伟; 孙慧
Original assignee: Qingdao Wanbao Compressor Co ltd
Current assignee: Qingdao Wanbao Compressor Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2023-08-01
Anticipated expiration: 2041-01-29
Also published as: CN112901453A

Abstract

The invention discloses a five-cavity air suction muffler of a compressor and the compressor, which comprise a container and a filter screen, wherein the container is provided with an opening, the filter screen is arranged at the opening of a shell, and the area of the filter screen is equal to that of the opening; the container is internally provided with a cavity, the container is internally provided with a plurality of partition boards, the cavity in the container is divided into a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity which are communicated with each other by the partition boards, and the first cavity is communicated with an opening of the container.

Description

Five-cavity air suction muffler of compressor and compressor

Technical Field

The invention belongs to the technical field of compressors, and particularly relates to a five-cavity suction muffler of a compressor and the compressor.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The invention relates to a refrigerator compressor suction noise which is an important source of whole machine noise, and the inventor considers that the main structure of the traditional compressor suction silencer is an upper shell, a lower shell and an inner pipe, wherein the inner pipe is formed by combining two parts, and has large fit clearance, poor loose tightness and large leakage. The existing compressor suction muffler has the defects of small number of chambers, narrow noise elimination frequency band, incapability of giving consideration to low-frequency and high-frequency noise and poor noise elimination effect.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a five-cavity air suction muffler of a compressor and the compressor, which can be applied to a totally-enclosed compressor for a refrigerator, wherein the interior of the muffler is divided into five cavities by a baffle plate, the five cavities are arranged in series by an inner insertion pipe, the noise elimination peak frequencies of the five cavities are different, the noise elimination frequency bandwidth can be effectively improved, and the full-band sound transmission loss is improved; the five cavities are internally provided with the inner insertion pipe which is coaxially arranged, so that the sound attenuation amount is improved, the peak frequency is adjusted, meanwhile, the local pressure loss is reduced, and the five-cavity suction muffler improves the sound transmission loss, reduces the pressure loss, gives consideration to the noise and the performance of the compressor, and has good noise reduction and efficiency improvement effects.

In order to achieve the above object, the present invention is realized by the following technical scheme:

in a first aspect, the present invention provides a five-chamber suction muffler for a compressor, including a container and a filter screen, wherein the container has an opening, the filter screen is mounted at the opening of the housing, and the area of the filter screen is equal to the area of the opening; the container is internally provided with a cavity, the container is internally provided with a plurality of partition boards, the cavity in the container is divided into a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity which are communicated with each other by the partition boards, and the first cavity is communicated with an opening of the container.

In a second aspect, the present invention further provides a compressor, including a five-chamber suction muffler of the compressor according to the first aspect.

The technical scheme of the invention has the following beneficial effects:

(1) According to the invention, the interior of the silencer is divided into five chambers by the partition plate, the five chambers are arranged in series by the inner cannula, and the silencing peak frequencies of the five chambers are different, so that the silencing frequency band width can be effectively improved, and the full-band sound transmission loss is improved; the five cavities are internally provided with the inner insertion pipe which is coaxially arranged, so that the sound attenuation amount is improved, the peak frequency is adjusted, meanwhile, the local pressure loss is reduced, and the five-cavity suction muffler improves the sound transmission loss, reduces the pressure loss, gives consideration to the noise and the performance of the compressor, and has good noise reduction and efficiency improvement effects.

(2) According to the invention, each cavity is internally inserted with the guide pipe, the guide pipe is symmetrical in axis, the opening is small, the local pressure loss is small, and the air suction efficiency is improved.

(3) In the invention, the fifth cavity is not provided with the oil drain hole, and is replaced by the second guide pipe, so that the tightness is ensured, and the silencing effect is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.

FIG. 1 is a schematic overall appearance of a muffler according to one or more embodiments of the present invention;

FIG. 2 is a schematic view of the interior of a first housing indicating the extent of a first receptacle and a second receptacle according to one or more embodiments of the present invention;

FIG. 3 is a schematic view of the interior of a first housing according to one or more embodiments of the present disclosure;

FIG. 4 is a schematic view of the interior of a second housing according to one or more embodiments of the present disclosure;

FIG. 5 is a schematic view of an air outlet and a draft tube according to one or more embodiments of the present invention;

fig. 6 is a schematic illustration of the mating of a first housing and a second housing according to one or more embodiments of the present invention.

In the figure: the air inlet valve comprises a first shell, a second shell, a 3-filter screen, an air inlet, 14-first cavities, 15-second cavities, 16-third cavities, 17-fourth cavities, 18-fifth cavities, 19-first inner insertion pipes, 100-first accommodating parts, 110-second inner insertion pipes, 111-third inner insertion pipes, 112-fourth inner insertion pipes, 113-fifth inner insertion pipes, 114-sixth inner insertion pipes, 115-seventh inner insertion pipes, 116-first shell first partition plates, 117-first shell second partition plates, 118-first shell third partition plates, 119-first shell fourth partition plates, 120-first oil discharge holes, 121-second oil discharge holes, 122-third oil discharge holes, 123-fourth oil discharge holes, 124-trapezoid bosses, 21-air outlets, 22-honeycomb ducts, 23-second shell first partition plates, 24-second shell second partition plates, 25-second shell third partition plates, 26-second shell fourth partition plates, 27-trapezoid grooves, 28-second accommodating parts and 200-second cavities.

The mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustrations are used for illustration only.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular forms also are intended to include the plural forms unless the present invention clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "upper", "lower", "left" and "right" in the present invention, if they mean only the directions of upper, lower, left and right in correspondence with the drawings themselves, are not limiting in structure, but merely serve to facilitate description of the present invention and simplify description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Term interpretation section: the terms "mounted," "connected," "secured," and the like in the present invention are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the terms are used herein as specific meanings as understood by those of ordinary skill in the art, and are not limited to the following terms.

As described in the background art, aiming at the defects existing in the prior art, the invention aims to provide a five-cavity air suction muffler of a compressor and the compressor, which can be applied to a totally-enclosed compressor for a refrigerator, wherein the interior of the muffler is divided into five cavities by a baffle plate, the five cavities are arranged in series by a flow guide pipe, the noise elimination peak frequencies of the five cavities are different, the noise elimination frequency band width can be effectively improved, and the full-band sound transmission loss is improved; the five cavities are internally provided with the inner insertion pipe which is coaxially arranged, so that the sound attenuation amount is improved, the peak frequency is adjusted, meanwhile, the local pressure loss is reduced, and the five-cavity suction muffler improves the sound transmission loss, reduces the pressure loss, gives consideration to the noise and the performance of the compressor, and has good noise reduction and efficiency improvement effects.

Example 1

In an exemplary embodiment of the invention, the embodiment discloses a five-cavity suction muffler of a compressor, which comprises a container and a filter screen 3, wherein the container is provided with an opening 11, the filter screen 3 is arranged at the opening 11 of a shell, and the area of the filter screen 3 is equal to the area of the opening 11; the container is internally provided with a cavity, a plurality of partition plates are arranged in the container, the cavity in the container is divided into a first cavity 14, a second cavity 15, a third cavity 16, a fourth cavity 17 and a fifth cavity 18 which are communicated, and the first cavity 14 is communicated with the opening 11 of the container.

Further, the container in this embodiment includes a first housing 1 and a second housing 2, edges of the first housing 1 and the second housing 2 are detachably connected, inner sides of the first housing 1 and the second housing 2 are provided with a plurality of partitions, and the partitions of the first housing 1 and the second housing 2 are correspondingly arranged as the partitions to form a cavity. For the first housing 1, the first housing 1 is divided into five chambers by a first housing first partition 116, a first housing second partition 117, a first housing third partition 118, and a first housing fourth partition 119, and the second housing 2 is divided into five chambers by a second housing first partition 23, a second housing second partition 24, a second housing third partition 25, and a second housing fourth partition 26, and the first housing 14, the second cavity 15, the third cavity 16, the fourth cavity 17, and the fifth cavity 18 are formed after the first housing 1 and the second housing 2 are assembled, that is: the first partition 116, the second partition 117, the third partition 118 and the fourth partition 119 of the first housing 1 and the second housing 2 are in one-to-one correspondence, and are matched through trapezoidal slots.

It can be understood that the partition board on the first shell 1 is provided with a trapezoid boss 124 with a trapezoid cross section, the partition board on the second shell 2 is correspondingly provided with a trapezoid groove with a trapezoid cross section, and the trapezoid boss and the trapezoid groove are in interference fit, and a groove cavity is formed after the trapezoid groove is assembled. The two cavities are in interference fit, tightness is guaranteed after assembly, leakage among the five cavities is reduced, and sound transmission loss is improved. The depth of the trapezoid slot is larger than the height of the trapezoid boss 124, a groove cavity is formed after assembly, the deformation of the groove is improved, and the interference fit groove is prevented from being broken.

It will be appreciated that the first housing 1 and the second housing 2 in this embodiment, when connected, form the container in this embodiment. In the following description, the first casing 1 and the second casing 2 are regarded as one body in the present embodiment to describe the container in detail.

Referring to fig. 2, the container includes a first accommodating portion 100 and a second accommodating portion 200 that are connected, where the first accommodating portion 100 and the second accommodating portion 200 are both formed by a first housing 1 and a second housing 2, the first accommodating portion 100 is provided with an opening 11, a plane where the connection portion of the first accommodating portion 100 and the second accommodating portion 200 is located is defined as a reference plane, and a cross section parallel to the reference plane is defined as a vertical cross section, so that the vertical cross section area of the first accommodating portion 100 is smaller than the vertical cross section area of the second accommodating portion 200.

It will be appreciated that the container bulges outwardly adjacent the motor to increase the internal volume of the muffler, and in particular the volume of the first chamber 14, to increase the sound transmission loss of the first chamber 14.

Further, a first partition 116 is disposed inside the connection between the first receiving portion 100 and the second receiving portion 200.

Further, the first cavity 14 is located in the first accommodating portion 100, and the second cavity 15, the third cavity 16, the fourth cavity 17 and the fifth cavity 18 are all located in the second accommodating portion 200.

It will be appreciated that the second housing 200 has a larger volume than the first housing 100 to accommodate more cavities.

Further, the first cavity 14, the second cavity 15, the third cavity 16, the fourth cavity 17 and the fifth cavity 18 are sequentially connected in series, and volumes of the first cavity 14, the second cavity 15, the third cavity 16, the fourth cavity 17 and the fifth cavity 18 are all different to perform silencing treatment on sound waves with different frequencies. More specifically, the peak values of the silencing of the five cavities are staggered, the silencing frequency band width is improved, and the sound transmission loss of frequency bands of 630-800Hz and 4000-6300Hz is improved.

More specifically, the first cavity 14, the second cavity 15, the third cavity 16, the fourth cavity 17 and the fifth cavity 18 are communicated through an inner insertion tube. The refrigerant enters the muffler from the air inlet 11, sequentially reaches each cavity along the inner pipe, finally passes through the flow guide pipe 22 and enters the cylinder from the air outlet.

More specifically, a plurality of inner cannulas are transversely arranged on the first shell 1, and the first cavity, the second cavity, the third cavity, the fourth cavity and the fifth cavity are sequentially connected in series.

The inlet of the first cavity 14 is inserted into the first inner cannula 19, the outlet of the first cavity 14 is inserted into the second inner cannula 110, a gap is formed between the first cannula and the second cannula, and the gap width is 1mm; the inlet of the second cavity 15 is inserted into a third inner cannula 111, the third inner cannula 111 extends into the second cavity 15, a gap is arranged between the tail end of the third inner cannula 111 and the outlet of the second cavity 15, and the gap width is 1.5mm; the inlet of the third cavity 16 is inserted into the fourth inner cannula 112, the outlet of the third cavity 16 is inserted into the fifth inner cannula 113, a gap is formed between the fourth inner cannula 112 and the fifth inner cannula 113, and the gap width is 2mm; the outlet of the fourth cavity 17 is inserted into a sixth inner insertion tube 114, and the sixth inner insertion tube 114 extends into the fourth cavity 17 by a length of 4mm; an inlet port in fifth lumen 18 is plugged into seventh inner cannula 115, seventh inner cannula 115 extending 18mm into the fifth lumen.

More specifically, the first inner cannula 19, the second inner cannula 110, the third inner cannula 111, the fourth inner cannula 112, the fifth inner cannula 113, and the sixth inner cannula 114 are all straight pipes, coaxial, and have the same pipe diameter.

Further, the walls of the first cavity 14, the second cavity 15, the third cavity 16 and the fourth cavity 17 are all provided with holes for draining oil.

More specifically, the first casing 2 corresponding to the position of the first cavity 14 is provided with a first oil drain hole 120, the first casing 2 corresponding to the position of the second cavity 15 is provided with a second oil drain hole 121, the first casing 2 corresponding to the position of the third cavity 16 is provided with a third oil drain hole 122, and the first casing 2 corresponding to the position of the fourth cavity 17 is provided with a fourth oil drain hole 123.

The fifth chamber 18 is not provided with an oil drain hole, and the refrigerating machine oil inside can flow into the third chamber 16 through the sixth inner insertion pipe 114 and the seventh inner insertion pipe 115, and then be discharged to the outside of the muffler through the fourth oil drain hole 123.

Example 2

A compressor comprising the five-chamber suction muffler of embodiment 1.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The five-cavity suction muffler of the compressor is characterized by comprising a container and a filter screen, wherein the container is provided with an opening, the filter screen is arranged at the opening of the shell, and the area of the filter screen is equal to that of the opening; the container is internally provided with a cavity, the container is internally provided with a plurality of partition boards, the plurality of partition boards divide the cavity in the container into a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity which are communicated, and the first cavity is communicated with an opening of the container;

the first cavity, the second cavity, the third cavity, the fourth cavity and the fifth cavity are communicated through an inner insertion pipe;

the first cavity inlet is inserted into the first inner cannula, the first cavity outlet is inserted into the second inner cannula, and a gap is reserved between the first inner cannula and the second inner cannula; the second cavity inlet is inserted into a third inner cannula, the third inner cannula extends into the second cavity, and a gap is arranged between the tail end of the third inner cannula and the second cavity outlet; the third cavity inlet is inserted into a fourth inner cannula, the third cavity outlet is inserted into a fifth inner cannula, and a gap is reserved between the fourth inner cannula and the fifth inner cannula; the outlet of the fourth cavity is inserted into a sixth inner cannula, and the sixth inner cannula extends into the fourth cavity; a seventh inner cannula is inserted into the inlet in the fifth cavity, and the seventh inner cannula extends into the fifth cavity;

the first inner cannula, the second inner cannula, the third inner cannula, the fourth inner cannula, the fifth inner cannula and the sixth inner cannula are straight pipes and are coaxial and have the same pipe diameter.

2. The five-chamber suction muffler of a compressor as claimed in claim 1, wherein the container includes a first housing and a second housing, edges of the first housing and the second housing are detachably connected, inner sides of the first housing and the second housing are provided with a plurality of partitions, and the partitions of the first housing and the second housing are correspondingly arranged as the partitions to form the chamber.

3. The five-chamber suction muffler of a compressor as claimed in claim 1, wherein the container includes a first accommodating portion and a second accommodating portion connected to each other, the first accommodating portion is provided with the opening, a vertical section is defined by using a plane where the first accommodating portion and the second accommodating portion are connected as a reference plane, and a section parallel to the reference plane is defined as a vertical section, and then the vertical section area of the first accommodating portion is smaller than the vertical section area of the second accommodating portion.

4. A five-chamber suction muffler for a compressor as claimed in claim 3, wherein a first partition is provided inside the junction of the first and second receiving portions.

5. A five chamber suction muffler for a compressor as claimed in claim 3, wherein the first chamber is located within the first receiving portion, and the second, third, fourth and fifth chambers are located within the second receiving portion.

6. The five-chamber suction muffler of a compressor as claimed in claim 1, wherein the first, second, third, fourth and fifth chambers are sequentially connected in series, and volumes of the first, second, third, fourth and fifth chambers are all different to perform a sound-deadening process on sound waves of different frequencies.

7. The five-chamber suction muffler of a compressor as claimed in claim 1, wherein the walls of the first, second, third and fourth chambers are provided with holes for oil drainage.

8. A compressor comprising a five-chamber suction muffler as claimed in any one of claims 1 to 7.