CN210440182U - Suction muffler for refrigeration compressor - Google Patents

Suction muffler for refrigeration compressor Download PDF

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Publication number
CN210440182U
CN210440182U CN201921110091.9U CN201921110091U CN210440182U CN 210440182 U CN210440182 U CN 210440182U CN 201921110091 U CN201921110091 U CN 201921110091U CN 210440182 U CN210440182 U CN 210440182U
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Prior art keywords
pipe
silencing
air inlet
shaped
shaped pipe
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Active
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CN201921110091.9U
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Chinese (zh)
Inventor
万朋
熊伟
朱子颐
黄进峰
于飞
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Huangshi Dongbei Compressor Co.,Ltd.
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Huangshi Dongbei Electrical Appliance Co Ltd
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Abstract

The utility model discloses a suction muffler for a refrigeration compressor, which comprises a muffling chamber, a U-shaped pipe, a T-shaped supporting clapboard, an air inlet pipe and an air outlet pipe; the T-shaped supporting partition plate comprises a transverse plate and a vertical plate and divides the silencing chamber into three independent silencing cavities; the middle part of the transverse plate is provided with a transverse plate opening, and the upper part of the transverse plate opening is provided with a circular boss; the air inlet pipe is communicated with the first silencing cavity, and the air outlet pipe is communicated with the third silencing cavity; a gap is formed between the air inlet end of the air outlet pipe and the circular boss, and part of the air inlet end of the air outlet pipe is arranged in a staggered manner; the U-shaped pipe is transversely fixed on the vertical plate, the U-shaped pipe main body is located in the second silencing cavity, the arc top of the U-shaped pipe is provided with a single-side vent hole, the air inlet of the U-shaped pipe is located in the first silencing cavity, a gap exists between the air inlet of the U-shaped pipe and the air outlet end of the air inlet pipe, part of the U-shaped pipe is arranged in a staggered mode, and the air outlet of the U-shaped pipe is communicated with the third silencing cavity through a transverse plate. The utility model discloses a muffler breathes in simple structure, with low costs, breathe in efficient, the noise cancelling effect is good.

Description

Suction muffler for refrigeration compressor
Technical Field
The utility model relates to a muffler technical field specifically is a muffler of breathing in for compressor.
Background
Suction noise is a major source of compressor airflow noise. The main existing noise reduction and silencing method is to install a suction silencing cavity at the suction port of the compressor to attenuate noise. In order to achieve a better silencing effect, at present, various air suction silencing cavities are more and more complex in structure and are subjected to expansion buffering through a multi-stage silencing chamber and a plurality of pipelines, but airflow power loss is more and more large, meanwhile, heat exchange between the cold air sucked by an air suction port and the interior of the press is more and more, the temperature of the air entering a cylinder is increased, the exertion of air suction efficiency is influenced, and the energy efficiency of the press is reduced.
Meanwhile, in some existing silencers, the wall of a silencing chamber is impacted by airflow greatly in the flowing process of the silencing chamber, and the silencing chamber also becomes noise source radiation noise. In order to enhance the shielding effect, the wall thickness of the silencing chamber is increased, which leads to an increase in material cost. The volume of the silencing chamber is increased to obtain better silencing effect, but the required shell space is also larger, so that the cost of the press is increased.
Therefore, the technical problems to be solved at present are as follows: how in limited space, under the prerequisite that does not increase the cost, does not reduce noise cancelling effect, improved the shielding effect in current amortization chamber, furthest's improvement efficiency of breathing in reduces air loss and heat exchange.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of prior art problem at least, provide a simple structure, with low costs, inhale efficient, the effectual muffler of breathing in for compressor.
In order to achieve the above purpose, the utility model provides a suction muffler for a refrigeration compressor, which comprises a muffling chamber, a U-shaped pipe, a T-shaped supporting clapboard, an air inlet pipe and an air outlet pipe;
the T-shaped supporting partition plate comprises a transverse plate and a vertical plate, the transverse plate and the vertical plate are perpendicular to each other and are fixedly connected into a whole, the T-shaped supporting partition plate is embedded in the silencing chamber and is used for dividing the silencing chamber into three independent silencing cavities, the first silencing cavity and the second silencing cavity are positioned below the transverse plate and are separated by the vertical plate, the third silencing cavity is positioned above the transverse plate, and the volumes of the second silencing cavity and the third silencing cavity are both larger than that of the first silencing cavity; the middle part of the transverse plate is provided with a transverse plate opening, and the upper part of the transverse plate opening is provided with a circular boss;
the air inlet pipe is positioned on the side wall of the silencing chamber and is communicated with the first silencing cavity, and the air outlet pipe is positioned on the upper wall of the silencing chamber and is communicated with the third silencing cavity; a vertical gap is formed between the air inlet end of the air outlet pipe and the circular boss, and the air outlet end of the air outlet pipe and the circular boss are arranged in a staggered mode relative to the horizontal plane;
the U-shaped pipe is located below a transverse plate in the silencing chamber and is integrally and transversely fixed on the vertical plate, the U-shaped pipe main body is located in the second silencing chamber, a single-side air vent is formed in the top of an arc of the U-shaped pipe, the air inlet of the U-shaped pipe is located in the first silencing chamber, a horizontal gap exists between the air inlet of the U-shaped pipe and the air outlet end of the air inlet pipe, the U-shaped pipe and the air outlet end of the air inlet pipe are partially arranged in a staggered mode relative to a vertical surface, and the air outlet of.
Preferably, the inlet end of outlet duct with the terminal surface of ring boss is horizontal terminal surface, just the horizontal terminal surface of the inlet end of outlet duct with the perpendicular distance between the horizontal terminal surface of ring boss is 2 ~ 4cm, the axis of the inlet end of outlet duct with the distance between the axis of ring boss is 5 ~ 9 mm.
Preferably, the end faces of the air inlet of the U-shaped pipe and the air outlet end of the air inlet pipe are vertical end faces, the horizontal distance between the vertical end face of the air inlet of the U-shaped pipe and the vertical end face of the air outlet end of the air inlet pipe is 2-4 cm, and the distance between the central axis of the air inlet of the U-shaped pipe and the central axis of the air outlet end of the air inlet pipe is 3-7 mm.
Preferably, the volume ratio of the first silencing cavity to the second silencing cavity is 1: 2-1: 3.
Preferably, the volume ratio of the first silencing cavity to the third silencing cavity is 1: 3-1: 4.
Preferably, the cross-sectional area of the U-shaped pipe is 20-50 mm2
Preferably, the aperture of the vent hole on the U-shaped pipe is 2-10 mm2
Preferably, a filter screen is installed on the circular boss.
Preferably, an oil leakage hole is respectively arranged below the first silencing cavity and the second silencing cavity.
Preferably, the vertical plate of the T-shaped supporting partition plate is provided with a vertical plate hole, and the middle part of the U-shaped pipe is fixed on the T-shaped supporting partition plate through the vertical plate hole.
Preferably, the inner wall of the silencing chamber is provided with a clamping groove, and the T-shaped supporting partition plate is fixed with the inner wall of the silencing chamber through the clamping groove.
The utility model discloses a muffler of breathing in for compressor sets up U type pipe and T type supporting baffle in the amortization room to intake pipe and outlet duct stagger respectively with the entering of U type pipe channel, gas outlet tip and arrange. Compared with the prior art, the utility model has the advantages of it is following:
(1) the structure is simple, the cost is low, and the occupied space is small;
(2) the cold air flow mainly circulates in the U-shaped pipe, the air inlet pipe and the air outlet pipe are respectively arranged in a staggered way with the air inlet end part and the air outlet end part of the U-shaped pipe channel, so that the heat exchange between the air flow and the outside of the silencing room can be reduced, the flow resistance loss and the noise radiation generated by air flow impact can be reduced, in addition, the outer wall of the U-shaped pipe wraps the silencing room space, most of the noise radiated outwards by the U-shaped pipe is shielded by the silencing room space, and the silencing effect and the air suction efficiency are greatly;
(3) the T-shaped supporting partition plate skillfully divides the silencing chamber into a plurality of silencing cavities, the first silencing cavity and the third silencing cavity are respectively communicated with the air inlet and the air outlet ends of the U-shaped pipe, the arc top of the U-shaped pipe of the second silencing cavity is provided with a vent hole, and the air flow direction and the cross section in the U-shaped pipe are suddenly changed to realize silencing by utilizing the sudden change of the air flow direction and the cross section in the U-shaped pipe and the expansion ratio of the silencing cavities, so that the T-shaped supporting partition plate has a good air suction silencing.
Drawings
Fig. 1 is a front view of a suction muffler for a refrigeration compressor according to embodiment 1 of the present invention.
Fig. 2 is a partial sectional view of a suction muffler for a refrigeration compressor according to embodiment 1 of the present invention.
Fig. 3 is a schematic sectional view of a U-shaped tube in embodiment 1 of the present invention.
Fig. 4 is a schematic sectional view of a T-shaped supporting partition in embodiment 1 of the present invention.
Reference numerals: 1. an air inlet pipe; 2. a first muffling chamber; 3. an oil leak hole; 4. a U-shaped pipe; 5. a second muffling chamber; 6. a T-shaped support baffle; 7. a third sound-deadening chamber; 8. an air outlet pipe; 9. a groove; 21. an air inlet; 22. a vent hole; 23. an air outlet; 61. a vertical plate; 62. a vertical plate hole; 63. a transverse plate opening; 64. a filter screen; 65. a transverse plate.
Detailed Description
The utility model provides a muffler of breathing in for compressor, including anechoic chamber, U type pipe 4, T type supporting baffle 6, intake pipe 1 and outlet duct 8.
The T-shaped supporting partition plate 6 comprises a transverse plate 65 and a vertical plate 61, the transverse plate 65 and the vertical plate 61 are vertically arranged and fixedly connected into a whole, the T-shaped supporting partition plate 6 is embedded in the silencing chamber and is used for dividing the silencing chamber into three independent silencing cavities, the first silencing cavity 2 and the second silencing cavity 5 are positioned below the transverse plate 65 and are separated by the vertical plate 61, the third silencing cavity 7 is positioned above the transverse plate 65, and the volumes of the second silencing cavity 5 and the third silencing cavity 7 are larger than that of the first silencing cavity 2; the middle part of the transverse plate 65 is provided with a transverse plate opening 63, and the upper part of the transverse plate opening 63 is provided with a circular boss.
The air inlet pipe 1 is positioned on the side wall of the silencing chamber and is communicated with the first silencing cavity 2, and the air outlet pipe 8 is positioned on the upper wall of the silencing chamber and is communicated with the third silencing cavity 7; a vertical gap is formed between the air inlet end of the air outlet pipe 8 and the circular boss, and the air outlet pipe is arranged in a staggered manner relative to the horizontal plane;
the U-shaped pipe 4 is located below a transverse plate 65 in the silencing chamber and is integrally and transversely fixed on a vertical plate 61, the main body of the U-shaped pipe 4 is located in a second silencing cavity 5, a single-side vent hole 22 is formed in the arc top of the U-shaped pipe 4, an air inlet 21 of the U-shaped pipe 4 is located in a first silencing cavity, a horizontal gap exists between the air inlet 21 of the U-shaped pipe 4 and an air outlet end of the air inlet pipe 1, the horizontal gap is partially staggered relative to a vertical surface, and an air outlet 23 of the U-shaped pipe 4 is communicated with a third silencing cavity 7 through a transverse plate opening 63.
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present invention, and it is to be understood that the described embodiments are merely illustrative of some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 to 4, a suction muffler for a refrigerant compressor of the present embodiment includes a muffling chamber, a U-shaped pipe 4, a T-shaped supporting partition 6, an inlet pipe 1, and an outlet pipe 8.
T type supporting baffle 6 includes diaphragm 65 and riser 61, and diaphragm 65 and riser 61 mutually perpendicular set up and fixed connection become integrative, and T type supporting baffle 6 is embedded be used for in the amortization room with three independent amortization chamber is separated into to the amortization room, and first amortization chamber 2 and second amortization chamber 5 are located diaphragm 65 below and are separated by riser 61, and third amortization chamber 7 is located diaphragm 65 top. The middle part of the transverse plate 65 is provided with a transverse plate opening 63, and the upper part of the transverse plate opening 63 is provided with a circular boss. In order to facilitate installation and disassembly, the inner wall of the silencing chamber is preferably provided with a clamping groove, and the T-shaped supporting partition plate 6 is fixed with the inner wall of the silencing chamber through the clamping groove.
The air inlet pipe 1 is positioned on the side wall of the silencing chamber and is communicated with the first silencing cavity 2, and the air outlet pipe 8 is positioned on the upper wall of the silencing chamber and is communicated with the third silencing cavity 7;
the U-shaped pipe 4 is located below a transverse plate 65 in the silencing chamber and is integrally and transversely fixed on a vertical plate 61, the main body of the U-shaped pipe 4 is located in a second silencing cavity 5, a single-side vent hole 22 is formed in the arc top of the U-shaped pipe 4, an air inlet 21 of the U-shaped pipe 4 is located in a first silencing cavity, and an air outlet 23 of the U-shaped pipe 4 is communicated with a third silencing cavity 7 through a transverse plate opening 63.
Preferably, the vertical plate 61 of the T-shaped supporting partition plate 6 is provided with a vertical plate hole 62, and the middle part of the U-shaped pipe 4 is fixed on the T-shaped supporting partition plate 6 through the vertical plate hole 62. Can be fast fixed with U type pipe through the riser hole, and convenient the dismantlement.
Wherein the volumes of the second sound-deadening chamber 5 and the third sound-deadening chamber 7 are both larger than the volume of the first sound-deadening chamber 2. A horizontal gap is formed between the air inlet 21 of the U-shaped pipe 4 and the air outlet end of the air inlet pipe 1, the air inlet pipe is arranged in a staggered mode relative to the vertical surface, and the air inlet pipe can slightly deviate in the vertical surface in any direction such as up-down direction, front-back direction and back direction relative to the air inlet of the U-shaped pipe. And a vertical gap is formed between the air inlet end of the air outlet pipe 8 and the circular boss, and the air outlet pipe 8 is arranged in a staggered manner relative to the horizontal plane, and can slightly deviate in any directions of front, back, left and right relative to the central axial horizontal plane of the circular boss.
Referring to fig. 1, a part of the muffling chamber of the present embodiment is recessed, and the groove 9 is mainly used for mounting the terminal, and the groove 9 needs to be provided for giving way to the terminal, so that the volume space of the muffling chamber is not large, and structures such as a U-shaped tube and a T-shaped supporting partition plate in the present embodiment need to be provided for obtaining a good muffling effect. The shape of the muffling chamber in fig. 1 is not the only shape of the muffler of the present invention, and the shape of the muffling chamber in fig. 1 is not limited to the shape of the muffling chamber in the present application. The shape of the specific silencing chamber can be adjusted according to installation and use requirements, and correspondingly, the shape of the T-shaped supporting partition plate is adjusted along with the shape of the silencing chamber so as to ensure that the three silencing cavities are independent from each other.
In the working chamber of the silencer of the embodiment, cold air enters the first silencing cavity 2 from the air inlet pipe 1, most of air flow passes through the U-shaped pipe 4 and enters the third silencing cavity 7 through the cross plate port 63, and the air flow is silenced by utilizing the rapid change of the air flow direction and the cross section in the U-shaped pipe and the sudden change of the expansion ratio of the silencing chambers at the two ends of the U-shaped pipe; meanwhile, a part of air flow enters the second silencing cavity 5 through the single-side vent hole 22 formed in the arc top of the U-shaped pipe 4, enters the third silencing cavity 7 from the U-shaped pipe 4 after resonance silencing in the second silencing cavity 5, achieves the silencing purpose after multiple times of air flow expansion and sound wave resonance superposition, and then is discharged from the air outlet pipe 8.
Because the U-shaped pipe rigidity is great, and U-shaped pipe both ends stagger the setting with intake pipe and outlet duct, the noise radiation that significantly reduces because of the air current impact produces, and in addition U-shaped pipe outer wall has wrapped up the anechoic chamber space, and the outside radiant noise of U-shaped pipe is mostly shielded by the anechoic chamber space.
The sucked cold air flow is mainly transmitted in the U-shaped pipe, so that the heat exchange between the cold air flow and the outside of the silencing chamber is less, the sucked air is ensured to be supercooled, and meanwhile, the flow resistance loss is less due to the fact that the transmission path of the air flow is single, and the air suction efficiency is improved.
On the basis of the scheme, the inlet end of the outlet pipe 8 and the end face of the circular boss are both horizontal end faces, the vertical distance between the horizontal end face of the inlet end of the outlet pipe 8 and the horizontal end face of the circular boss can be set to be 2-4 cm, more preferably 3cm, the distance between the central axis of the inlet end of the outlet pipe 8 and the central axis of the circular boss can be set to be 5-9 mm, more preferably 7 mm. The air inlet of the U-shaped pipe 4 and the end face of the air outlet end of the air inlet pipe 1 are both vertical end faces, the horizontal distance between the vertical end face of the air inlet of the U-shaped pipe 4 and the vertical end face of the air outlet end of the air inlet pipe 1 can be set to be 2-4 cm, more preferably 3cm, and the distance between the central axis of the air inlet of the U-shaped pipe 4 and the central axis of the air outlet end of the air inlet pipe 1 can be set to be 3-7 mm, more preferably 5 mm.
The preferred scheme reasonably selects the position of the air inlet/outlet of the U-shaped pipe and the offset distance between the air inlet/outlet of the U-shaped pipe and the air inlet/outlet pipe, so that the noise generated by airflow impact can be reduced, the flow resistance loss can be reduced as much as possible, and the air suction efficiency is improved.
The cross section shape and size of the U-shaped pipe can be adjusted according to the space of the silencing chamber and the silencing requirement, and can be in the shape of a circle, a square, an ellipse and the like, and the cross section of the U-shaped pipe is preferably 6.5mm multiplied by 6.5mm square. The vent holes are preferably 2mm by 2 mm. The optimal U-shaped pipe shape and the size of the vent holes can ensure proper airflow size and air suction efficiency, and can also avoid larger airflow impact noise caused by overlarge airflow.
The height of the circular boss is preferably 3.5mm, a filter screen 64 can be further arranged on the circular boss, and the filter screen is preferably a phi 16mm steel wire mesh. The steel wire mesh can filter impurities in the gas and reduce airflow pulsation.
In another preferable scheme, the volume ratio of the first sound-deadening cavity 2 to the second sound-deadening cavity 5 is preferably 1:2 to 1: 3; the volume ratio of the first silencing cavity 2 to the third silencing cavity 7 is 1: 3-1: 4. The volume ratio of the first sound-deadening chamber 2, the second sound-deadening chamber 5, and the third sound-deadening chamber 7 in the present embodiment is more preferably 1: 2: 4. the volume ratio of the sound attenuation cavity optimized in the scheme can ensure that the silencer has better sound attenuation effect.
An oil leakage hole can be respectively arranged below the first silencing cavity and the second silencing cavity. Thereby achieving the purpose of double-layer oil leakage.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are within the scope of the present invention provided they are within the scope of the claims and their equivalents. What is not described in detail in the specification is prior art that is well known to those skilled in the art.

Claims (10)

1. A suction muffler for a refrigeration compressor is characterized by comprising a muffling chamber, a U-shaped pipe, a T-shaped supporting clapboard, an air inlet pipe and an air outlet pipe;
the T-shaped supporting partition plate comprises a transverse plate and a vertical plate, the transverse plate and the vertical plate are perpendicular to each other and are fixedly connected into a whole, the T-shaped supporting partition plate is embedded in the silencing chamber and is used for dividing the silencing chamber into three independent silencing cavities, the first silencing cavity and the second silencing cavity are positioned below the transverse plate and are separated by the vertical plate, the third silencing cavity is positioned above the transverse plate, and the volumes of the second silencing cavity and the third silencing cavity are both larger than that of the first silencing cavity; the middle part of the transverse plate is provided with a transverse plate opening, and the upper part of the transverse plate opening is provided with a circular boss;
the air inlet pipe is positioned on the side wall of the silencing chamber and is communicated with the first silencing cavity, and the air outlet pipe is positioned on the upper wall of the silencing chamber and is communicated with the third silencing cavity; a vertical gap is formed between the air inlet end of the air outlet pipe and the circular boss, and the air outlet end of the air outlet pipe and the circular boss are arranged in a staggered mode relative to the horizontal plane;
the U-shaped pipe is located below a transverse plate in the silencing chamber and is integrally and transversely fixed on the vertical plate, the U-shaped pipe main body is located in the second silencing chamber, a single-side air vent is formed in the top of an arc of the U-shaped pipe, the air inlet of the U-shaped pipe is located in the first silencing chamber, a horizontal gap exists between the air inlet of the U-shaped pipe and the air outlet end of the air inlet pipe, the U-shaped pipe and the air outlet end of the air inlet pipe are partially arranged in a staggered mode relative to a vertical surface, and the air outlet of.
2. The suction muffler for a refrigerating compressor as claimed in claim 1, wherein the inlet end of the outlet duct and the end surface of the circular boss are both horizontal end surfaces, a vertical distance between the horizontal end surface of the inlet end of the outlet duct and the horizontal end surface of the circular boss is 2-4 cm, and a distance between the central axis of the inlet end of the outlet duct and the central axis of the circular boss is 5-9 mm.
3. The suction muffler for the refrigeration compressor as claimed in claim 1, wherein the end surfaces of the air inlet of the U-shaped pipe and the air outlet end of the air inlet pipe are both vertical end surfaces, a horizontal distance between the vertical end surface of the air inlet of the U-shaped pipe and the vertical end surface of the air outlet end of the air inlet pipe is 2-4 cm, and a distance between a central axis of the air inlet of the U-shaped pipe and a central axis of the air outlet end of the air inlet pipe is 3-7 mm.
4. The suction muffler for a refrigerant compressor as set forth in claim 1, wherein the volume ratio of the first muffling chamber to the second muffling chamber is 1:2 to 1: 3; and/or the volume ratio of the first silencing cavity to the third silencing cavity is 1: 3-1: 4.
5. According to the claimsClaim 1 the suction muffler for a refrigeration compressor is characterized in that the cross-sectional area of the U-shaped pipe is 20-50 mm2
6. The suction muffler for a refrigeration compressor as claimed in claim 1, wherein the diameter of the vent hole of the U-shaped pipe is 2 to 10mm2
7. Suction muffler for a refrigeration compressor, according to any of claims 1 to 6, characterized in that the annular boss is fitted with a filtering mesh.
8. The suction muffler for a refrigerating compressor according to any one of claims 1 to 6, wherein one oil leakage hole is provided below each of the first and second muffling chambers.
9. The suction muffler for a refrigerating compressor as claimed in any one of claims 1 to 6, wherein the T-shaped supporting partition has vertical holes on its vertical plate, and the middle portions of the U-shaped tubes are fixed to the T-shaped supporting partition through the vertical holes.
10. The suction muffler for a refrigerating compressor as claimed in any one of claims 1 to 6, wherein the muffler chamber is provided with a locking groove on an inner wall thereof, and the T-shaped supporting partition is fixed to the inner wall of the muffler chamber by the locking groove.
CN201921110091.9U 2019-07-16 2019-07-16 Suction muffler for refrigeration compressor Active CN210440182U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921110091.9U CN210440182U (en) 2019-07-16 2019-07-16 Suction muffler for refrigeration compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921110091.9U CN210440182U (en) 2019-07-16 2019-07-16 Suction muffler for refrigeration compressor

Publications (1)

Publication Number Publication Date
CN210440182U true CN210440182U (en) 2020-05-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921110091.9U Active CN210440182U (en) 2019-07-16 2019-07-16 Suction muffler for refrigeration compressor

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113357127A (en) * 2021-06-23 2021-09-07 广州万宝集团压缩机有限公司 Air suction silencer, compressor and temperature adjusting equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113357127A (en) * 2021-06-23 2021-09-07 广州万宝集团压缩机有限公司 Air suction silencer, compressor and temperature adjusting equipment

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Effective date of registration: 20210617

Address after: No.6, East Jinshan Avenue, Huangshi economic and Technological Development Zone, Huangshi City, Hubei Province

Patentee after: Huangshi Dongbei Compressor Co.,Ltd.

Address before: No.6, East Jinshan Avenue, Huangshi economic and Technological Development Zone, Hubei Province

Patentee before: Huangshi Dongbei Electrical Appliance Co.,Ltd.