CN110701054B - Flanges, compressors and air conditioners - Google Patents

Flanges, compressors and air conditioners

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Publication number
CN110701054B
CN110701054B CN201911016879.8A CN201911016879A CN110701054B CN 110701054 B CN110701054 B CN 110701054B CN 201911016879 A CN201911016879 A CN 201911016879A CN 110701054 B CN110701054 B CN 110701054B
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CN
China
Prior art keywords
exhaust pipe
hole
holes
silencing
flange
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Active
Application number
CN201911016879.8A
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Chinese (zh)
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CN110701054A (en
Inventor
郭婷婷
邓丽颖
徐嘉
刘国良
杨欧翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Priority to CN201911016879.8A priority Critical patent/CN110701054B/en
Publication of CN110701054A publication Critical patent/CN110701054A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

The invention provides a flange, a compressor and an air conditioner. The flange comprises an exhaust pipeline, wherein a silencing hole is formed in the inner wall of the exhaust pipeline, the silencing hole is of a blind hole structure, and when air flow in the exhaust pipeline passes through an opening of the silencing hole, the silencing hole reduces air flow noise. A blind hole-shaped silencing hole is formed in the pipe wall of the flange exhaust pipeline, and through the blind hole silencing principle, a gas column in the blind hole vibrates under the action of sound pressure, so that energy consumption is achieved to reduce exhaust noise.

Description

Flange, compressor and air conditioner
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to a flange, a compressor and an air conditioner.
Background
Household air conditioner noise is an important factor affecting resident comfort index, and noise generated by a compressor is a main source of noise in an air conditioning system. The noise composition of the compressor is complex, and the compressor mainly comprises pneumatic noise, mechanical noise and electromagnetic noise, wherein the pneumatic noise mainly occurs in an exhaust area, the air flow speed near an exhaust valve seat of the compressor is high, the flow channel structure is complex, the interaction between the air flow and the solid wall surface is severe, and obvious air flow noise is formed.
In the prior art, a plurality of square holes are arranged in an inner shaft groove of a flange exhaust port on a compressor and the upper end surface of the exhaust port, turbulence is generated in the square holes, so that a boundary layer structure is moved to the outside of the exhaust port, the effective flow area of refrigerant gas is increased, and the refrigerant gas can be smoothly exhausted from a cylinder through the exhaust port.
However, the above scheme has the problems that the secondary vortex is easy to generate noise due to the structure of the square holes, the scheme does not consider the influence of the actual flowing direction on the arrangement of the holes, extra noise is further excited, the scheme does not reasonably design the size of the square holes, the clearance volume is increased when grooves are designed at the exhaust port, and the performance of the compressor is reduced.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a flange, a compressor and an air conditioner, which can reduce the pneumatic noise of exhaust.
In order to solve the problems, the invention provides a flange, which comprises an exhaust pipeline, wherein a silencing hole is arranged on the inner wall of the exhaust pipeline, the silencing hole is of a blind hole structure, and when air flow in the exhaust pipeline passes through an opening of the silencing hole, the silencing hole reduces air flow noise.
Preferably, the silencing holes are arranged in a plurality, and the silencing holes are arranged along the circumferential direction of the exhaust pipeline.
Preferably, the plurality of the silencing holes are divided into at least two groups, each group of the silencing holes are circumferentially arranged, and the plurality of groups of the silencing holes are axially arranged along the exhaust pipeline.
Preferably, two adjacent groups of the silencing holes are staggered along the circumferential direction.
Preferably, the cross-sectional shape of the silencing hole is one or a combination of more than one of a circle, a triangle and an ellipse.
Preferably, when the sound deadening holes are provided as circular holes, the number n of the sound deadening holes, the diameter D 1, and the hole depth h 1 have the following relationship with the displacement v of the exhaust pipe:。
Preferably, a group of the silencing holes closest to the first end face of the exhaust pipe is L 1 and a group of the silencing holes closest to the second end face of the exhaust pipe is L 2, on the inner peripheral surface of the exhaust pipe in an expanded view, the axial distance of adjacent two groups of the silencing holes is L 3, the minimum circumferential distance of the adjacent two groups of the silencing holes is L 4, the included angle between the central line of the staggered silencing holes and the vertical axis passing through the center of one of the silencing holes is alpha, the distance between the adjacent silencing holes of the same group is L 5, the diameter of the exhaust pipe is D and the axial height of the exhaust pipe is H, wherein ,0.2mm≤L1=L2≤H/2;H/D≤L3≤3H/4;0.30mm≤L4≤D/H;0.25mm≤L5≤D/2;H/D≤D1≤D/2H;0°≤α≤90°;0.2mm≤h1≤2mm.
Preferably, 30 DEG≤alpha≤60 deg.
Preferably, the displacement v is related to the diameter D by:。
According to another aspect of the present invention, there is provided a compressor comprising a flange as described above.
Preferably, the compressor comprises an upper flange, and a blind hole is formed in the inner wall of the exhaust port of the upper flange.
According to a further aspect of the present invention there is provided an air conditioner comprising a flange as described above or a compressor as described above.
The flange comprises an exhaust pipeline, wherein a silencing hole is formed in the inner wall of the exhaust pipeline, the silencing hole is of a blind hole structure, and when air flow in the exhaust pipeline passes through an opening of the silencing hole, the silencing hole reduces air flow noise. The exhaust pipeline wall of the flange is provided with a blind hole-shaped silencing hole, and through the blind hole silencing principle, the air column in the blind hole vibrates under the action of sound pressure, so that the consumed energy can reduce the exhaust noise.
Drawings
FIG. 1 is an exploded view of a pump body component according to an embodiment of the present invention;
FIG. 2 is a block diagram of an upper flange according to an embodiment of the present invention;
FIG. 3 is a partial cross-sectional view of an upper flange according to an embodiment of the present invention;
FIG. 4 is an axial cross-sectional view of an exhaust port of an upper flange according to an embodiment of the present invention;
FIG. 5 is a schematic view of another structure of the sound deadening hole in the upper flange exhaust port according to the embodiment of the present invention;
FIG. 6 is a schematic view of the depth of a sound deadening hole according to an embodiment of the present invention;
FIG. 7 is a schematic view of an exhaust port deployment configuration according to an embodiment of the present invention;
FIG. 8 is a diagram of noise data for an embodiment of the present invention in which the upper flange exhaust port is not provided with a sound deadening hole;
FIG. 9 is a diagram of noise data for an embodiment of the present invention in which a sound deadening hole is provided in the exhaust port of the upper flange;
Fig. 10 is a graph showing the variation of the performance parameter (COP) and the noise reduction amount (Δdb) with the number of sound deadening holes of the single cylinder compressor according to the embodiment of the present invention.
The reference numerals are expressed as:
1. Pump body screw, 2, silencer, 3, upper flange, 31, exhaust port, 311, silencing hole, 4, spring, 5, sliding sheet, 6, roller, 7, cylinder, 8, crankshaft, 9, lower flange.
Detailed Description
Referring to fig. 1 to 10 in combination, according to an embodiment of the present invention, a flange includes an exhaust pipe having a sound deadening hole 311 provided on an inner wall thereof, the sound deadening hole 311 having a blind hole structure, and the sound deadening hole 311 reduces noise of an air flow when the air flow passes through an opening of the sound deadening hole 311 in the exhaust pipe.
Under the condition that the exhaust pipeline can generate pneumatic noise, the inner wall of the exhaust pipeline is provided with the silencing hole 311 with a blind hole structure, the silencing principle of the blind hole is utilized, when exhaust passes through the orifice, the air column in the blind hole generates vibration under the action of sound pressure, and the friction damping caused by the vibration converts part of sound energy into heat energy to dissipate, so that the noise generated by the exhaust is reduced.
In addition, the acoustic impedances of the sound attenuation holes 311 and the exhaust pipe suddenly change, and a part of sound energy is reflected back, so that a phase difference is generated between the transmitted sound wave and the reflected wave, and mutual interference is generated, thereby achieving the purpose of sound attenuation.
To achieve the effect of eliminating the aerodynamic noise more quickly, the silencing holes 311 are provided in plurality and evenly arranged along the circumferential direction of the exhaust pipe. In particular, the plurality of sound deadening holes 311 are divided into at least two groups, the sound deadening holes 311 of each group are arranged in the circumferential direction, and the plurality of groups of sound deadening holes 311 are arranged in the axial direction. Preferably, adjacent two groups of sound deadening holes 311 are alternately arranged in the circumferential direction.
The cross section of the sound deadening hole 311 is one or a combination of a plurality of circular, triangle and ellipse, which can realize good sound deadening effect, especially when the sound wave frequency is the same as the sound deadening Kong Guyou frequency, the vibration speed is the maximum, the sound energy consumption is the most, and the sound deadening effect is the best.
The following was performed with the sound deadening hole 311 as a circular hole:
After the pipe wall of the exhaust pipe is provided with the silencing holes, although noise is reduced, the clearance volume is increased after the pipe wall is perforated, so that performance is reduced, and the number n, the diameter D 1 and the hole depth h 1 of the silencing holes 311 are in the following relation with the displacement v of the exhaust pipe: when the noise reduction performance is optimized.
And a group of the sound deadening holes closest to the first end face of the exhaust pipe is L 1 in distance from the first end face, a group of the sound deadening holes closest to the second end face of the exhaust pipe is L 2 in distance from the second end face, on the inner peripheral surface of the exhaust pipe in an expanded view, the axial distance of adjacent two groups of the sound deadening holes is L 3, the minimum circumferential distance of the adjacent two groups of the sound deadening holes is L 4, the included angle between the central line of the sound deadening holes arranged in a staggered manner and the vertical axis passing through the center of one sound deadening hole is alpha, the distance between the adjacent sound deadening holes of the same group is L 5, the diameter of the exhaust pipe is D, and the axial height is H, wherein ,0.2mm≤L1=L2≤H/2;H/D≤L3≤3H/4;0.30mm≤L4≤D/H;0.25mm≤L5≤D/2;H/D≤D1≤D/2H;0°≤α≤90°;0.2mm≤h1≤2mm.
For two circumferential arrangements arranged in a staggered way, the included angle alpha has a better value range of 30 degrees or more and 60 degrees or less.
The invention starts from generating pneumatic noise source, designs the blind hole-shaped silencing hole 311 on the inner wall of the exhaust pipeline, and solves the problem that the noise of the compressor, particularly the variable frequency compressor, exceeds standard under the high-frequency condition by reasonably designing the parameters of the silencing hole on the premise of ensuring the performance of the compressor.
According to an embodiment of the invention, a compressor comprises a flange as described above.
The pump body explosion diagram of the compressor is shown in fig. 1, and comprises a silencer 2, an upper flange 3, a cylinder 7, a roller 6, a spring 4, a sliding sheet 5, a lower flange 9, a crankshaft 8 and pump body screws 1, wherein the silencer 2, the upper flange 3, the cylinder 7 and the lower flange 9 are fixed together through preset screw holes by the pump body screws 1, the cylinder 7, the roller 6 and the sliding sheet 5 jointly surround to form a crescent compression cavity, the rotary motion of the crankshaft 8 drives the roller 6 to rotate along the wall of the cylinder 7 to do work and enable the sliding sheet 5 to do reciprocating motion, and then the volume change is caused, so that the refrigerant realizes the air inlet, compression and exhaust processes.
The exhaust gas after the refrigerant compression is discharged into the compressor shell through the exhaust port 31 of the upper flange 3, and the exhaust gas has high pressure, high airflow speed near the exhaust valve seat, complex flow passage structure, intense interaction between the airflow and the solid wall surface and obvious airflow noise at the exhaust port 31 of the compressor.
The blind holes are arranged on the inner wall of the exhaust port 31 of the upper flange 3, noise data before and after the hole is formed in the upper flange 3 are compared, four small holes with phi 1mm are uniformly distributed in the middle plane of the side wall of the upper flange 3, the hole depth is 0.8mm, as compared with the holes before and after the hole is formed in fig. 8 and 9, the noise value after the hole is lower than the data before the hole is formed, especially in the range of 800-2500Hz, and the noise improvement condition is better.
As can be seen from the graph of the variation of the performance parameter (COP) and noise reduction amount (DeltadB) of a single-cylinder compressor along with the number of small holes, the COP decreases along with the increase of the number of small holes, while DeltadB is opposite, when the number of small holes is 10-17, the effect of noise reduction is achieved, and the influence on the performance is not obvious.
For different cross-sectional shapes of the sound-deadening holes 311, the sound power ratio of the air outlet 31 of the upper flange 3 is adopted in table 1, the sound power L P is an index for measuring the noise of the compressor, the smaller the sound power value is, the lower the noise generated by the compressor is, the L O is the reference sound power value, four small holes are uniformly distributed on the side wall of the upper flange 3 in the several schemes, the hole depths are all 1mm, and the result shows that the noise reduction value of the circular small holes is optimal.
Table 1 noise values for different schemes
Scheme for the production of a semiconductor device Ratio of acoustic power L P/LO
Original scheme (without hole) 10
Circular orifice (phi 1mm, hole depth 1 mm) 9.4
Triangle (equilateral triangle, side length and hole depth 1 mm) 9.75
According to an embodiment of the invention, an air conditioner comprises a flange as described above or a compressor as described above.
It is easy to understand by those skilled in the art that the above embodiments can be freely combined and overlapped without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (5)

1.一种法兰，其特征在于，包括排气管道，所述排气管道的内壁上设有消音孔（311），所述消音孔（311）设为盲孔结构；在所述排气管道中气流经过所述消音孔（311）的开口时，所述消音孔（311）减小气流噪音；1. A flange, characterized in that it includes an exhaust pipe, wherein the inner wall of the exhaust pipe is provided with a silencing hole (311), the silencing hole (311) being configured as a blind hole structure; when airflow passes through the opening of the silencing hole (311) in the exhaust pipe, the silencing hole (311) reduces airflow noise; 所述消音孔（311）的截面形状为圆形；The cross-sectional shape of the silencing hole (311) is circular; 其中，所述消音孔（311）的数量n、直径D1和孔深h1与所述排气管道的排量v存在下述关系： ；The number n, diameter D1 , and depth h1 of the silencer holes (311) are related to the discharge capacity v of the exhaust pipe as follows: ; 所述盲孔结构的开口端位于所述排气管道的内壁表面；The open end of the blind hole structure is located on the inner wall surface of the exhaust pipe; 多个所述消音孔（311）分为至少两组，每组所述消音孔（311）沿周向排布，多组所述消音孔（311）沿所述排气管道的轴向排布；相邻两组所述消音孔（311）沿周向方向交错设置；The plurality of silencers (311) are divided into at least two groups, each group of silencers (311) is arranged circumferentially, and the plurality of groups of silencers (311) are arranged axially along the exhaust pipe; adjacent groups of silencers (311) are staggered in the circumferential direction. 与所述排气管道的第一端端面最近的一组所述消音孔与该第一端端面的距离为L1，与所述排气管道的第二端端面最近的一组所述消音孔与该第二端端面的距离为L2，在所述排气管道的内周面展开图上，相邻两组所述消音孔的轴向距离为L3，相邻两组所述消音孔（311）的最小周向距离为L4，错位设置的消音孔（311）的中心连线与经过其中一个消音孔中心的竖直轴线之间的夹角为α，同一组的相邻消音孔（311）之间的距离为L5，所述排气管道的直径为D，轴向高度为H；其中，0.2mm≤L1=L2≤H/2；H/D≤L3≤3H/4；0.30mm≤L4≤D/H；0.25mm≤L5≤D/2；H/D≤D1≤D/2H；0°＜α＜90°；0.2mm≤h1≤2mm；The distance between the set of muffler holes closest to the first end face of the exhaust pipe and the first end face is L1 , and the distance between the set of muffler holes closest to the second end face of the exhaust pipe and the second end face is L2 . On the inner circumferential surface development view of the exhaust pipe, the axial distance between two adjacent sets of muffler holes is L3 , the minimum circumferential distance between two adjacent sets of muffler holes (311) is L4 , the angle between the center line connecting the staggered muffler holes (311) and the vertical axis passing through the center of one of the muffler holes is α, the distance between adjacent muffler holes (311) in the same set is L5 , the diameter of the exhaust pipe is D, and the axial height is H; wherein, 0.2mm≤L1 = L2≤H /2; H/ D≤L3≤3H / 4 ; 0.30mm≤L4≤D/H; 0.25mm≤L5≤D /2; H/ D≤D1 ≤D/2H; 0°＜α＜90°; 0.2mm≤h 1 ≤2mm; 所述消音孔（311）的直径为1mm，孔深为1mm。The silencing hole (311) has a diameter of 1 mm and a depth of 1 mm. 2.根据权利要求1所述的法兰，其特征在于，30°≤α≤60°。2. The flange according to claim 1, characterized in that 30°≤α≤60°. 3.一种压缩机，其特征在于，包括如权利要求1-2任一所述的法兰。3. A compressor, characterized in that it includes a flange as described in any one of claims 1-2. 4.根据权利要求3所述的压缩机，其特征在于，所述压缩机包括上法兰（3），所述上法兰（3）的排气口（31）内壁上设有盲孔。4. The compressor according to claim 3, characterized in that the compressor includes an upper flange (3), and a blind hole is provided on the inner wall of the exhaust port (31) of the upper flange (3). 5.一种空调器，其特征在于，包括如权利要求1-2任一所述的法兰或如权利要求3-4任一所述的压缩机。5. An air conditioner, characterized in that it includes a flange as described in any one of claims 1-2 or a compressor as described in any one of claims 3-4.
CN201911016879.8A 2019-10-24 2019-10-24 Flanges, compressors and air conditioners Active CN110701054B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112178776A (en) * 2020-08-24 2021-01-05 珠海格力电器股份有限公司 Indoor unit of air conditioner with upper air outlet and lower air outlet, control method and air conditioner
CN112228313A (en) * 2020-10-16 2021-01-15 姜文平 Exhaust valve assembly of compressor
CN114810607B (en) * 2021-01-21 2025-02-11 上海海立电器有限公司 Exhaust pipe and compressor upper cylinder cover

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JP2004239273A (en) * 2004-05-27 2004-08-26 Daikin Ind Ltd Rotary compressor
CN101495721A (en) * 2005-08-10 2009-07-29 弗利特加尔公司 Tubular acoustic silencer
CN211288092U (en) * 2019-10-24 2020-08-18 珠海格力节能环保制冷技术研究中心有限公司 Flange, compressor and air conditioner

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CN105276705A (en) * 2015-12-03 2016-01-27 珠海格力电器股份有限公司 Air condensing units and structure of making an uproar falls in damping thereof
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JP2004239273A (en) * 2004-05-27 2004-08-26 Daikin Ind Ltd Rotary compressor
CN101495721A (en) * 2005-08-10 2009-07-29 弗利特加尔公司 Tubular acoustic silencer
CN211288092U (en) * 2019-10-24 2020-08-18 珠海格力节能环保制冷技术研究中心有限公司 Flange, compressor and air conditioner

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