CN112196801B - Pump body muffler, pump body subassembly and compressor - Google Patents
Pump body muffler, pump body subassembly and compressor Download PDFInfo
- Publication number
- CN112196801B CN112196801B CN202010917350.XA CN202010917350A CN112196801B CN 112196801 B CN112196801 B CN 112196801B CN 202010917350 A CN202010917350 A CN 202010917350A CN 112196801 B CN112196801 B CN 112196801B
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- Prior art keywords
- pump body
- layer
- cover
- compressor
- muffler
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Classifications
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- 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
- F04C29/065—Noise dampening volumes, e.g. muffler chambers
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- 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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
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- 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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
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- 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
- F04C29/061—Silencers using overlapping frequencies, e.g. Helmholtz resonators
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to the technical field of compressors, in particular to a pump body silencer, a pump body assembly and a compressor, wherein the pump body silencer comprises an inner-layer silencing cover connected with the pump body assembly, and an outer-layer silencing cover sleeved on the inner-layer silencing cover, a gas-liquid separation cavity is formed between the inner-layer silencing cover and the outer-layer silencing cover, a plurality of hollow inner-layer resonators are arranged on one side, facing the outer-layer silencing cover, of the top surface of the inner-layer silencing cover, the tail ends of the inner-layer resonators are in contact with the outer-layer silencing cover, so that a resonant cavity expansion chamber is formed inside the inner-layer resonators, and the resonant cavity expansion chambers inside the inner-layer resonators are different in resonant frequency. The resonance frequency of each resonant cavity expansion chamber is different, so that the noise with different specific frequencies can be eliminated, the silencing effect of the silencer is improved, the compressor and the electric appliance using the compressor are prevented from damaging the sound environment in life of people, the comfort of the compressor and the electric appliance using the compressor is improved, and the application range of the compressor and the electric appliance using the compressor is expanded.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a pump body silencer, a pump body assembly and a compressor.
Background
The high speed of the rotor compressor is one of the future development directions, and the rotor compressor running at high speed has various application directions and advantages of quick refrigeration, high heating capacity, miniaturization and the like. However, the high speed of the rotor compressor also faces a plurality of challenges, and for the rotor compressor running at high speed, especially when the rotor compressor runs at 120Hz or above, the oil discharge rate of the compressor is increased, the gas pulsation and excitation are greatly increased due to the fast exhaust flow speed and the large exhaust mass flow, and the problems of the high speed oil discharge rate and the noise of the compressor are difficult points for the high speed research of the rotary compressor. The increase of the gas flow speed caused by the high-speed operation of the rotor compressor also causes the increase of the oil discharge rate, and the excessively low or high oil discharge rate is not beneficial to the compressor to keep a good lubricating state. Common optimization methods for the exhaust noise of the rotary compressor include an impedance muffler and a helmholtz resonator (hereinafter, referred to as "resonator"), which is generally disposed at the exhaust bevel cut of the cylinder, and in some cases, disposed in the exhaust flow channel. The high-speed rotary compressor has wide operation range, which leads to the widening of pneumatic pulsation and excitation range, the original design of the silencer and the exhaust resonant cavity only carries out optimization design aiming at specific frequency range, the wide-range gas pulsation is difficult to be dealt with, and a multi-objective resonant cavity design scheme is needed to meet the requirement of broadband noise reduction.
Disclosure of Invention
In order to solve the problems, the invention provides a pump body silencer, a pump body assembly comprising the pump body silencer and a compressor comprising the pump body assembly.
The invention is realized by adopting the following scheme:
a pump body silencer is connected with a crankshaft of a pump body component of a compressor, and comprises an inner-layer silencing cover connected with the pump body component, and an outer-layer silencing cover sleeved on the inner-layer silencing cover, wherein a gap is formed between the inner-layer silencing cover and the outer-layer silencing cover, a gas-liquid separation cavity is formed by the gap between the inner-layer silencing cover and the outer-layer silencing cover, a plurality of hollow inner-layer resonators are arranged on one side, facing the outer-layer silencing cover, of the top surface of the inner-layer silencing cover, the tail ends of the inner-layer resonators are in contact with the outer-layer silencing cover, so that the inside of the inner-layer resonators forms a resonant cavity expansion chamber, and the resonant cavity expansion chambers inside the inner-layer resonators have different resonant frequencies; the resonant cavity expansion chamber is communicated with the interior of the inner layer sound-deadening hood.
Furthermore, the bottom of the inner layer muffling cover is turned outwards to form a first chassis, the bottom of the outer layer muffling cover is turned outwards to form a second chassis, and the second chassis is connected to the first chassis.
Further, the peripheries of the first chassis and the second chassis are both circular.
Further, the resonant cavity expansion chamber is communicated with the inside of the inner layer muffling cover through a communication hole.
Further, the inner layer resonance body is cylindrical.
Furthermore, a plurality of oil return holes are formed in the side face of the outer-layer silencing cover.
Further, the side of the inner layer muffling cover is provided with an inner exhaust hole, the side of the outer layer muffling cover is provided with an outer exhaust hole, and the positions of the inner exhaust hole and the outer exhaust hole are not overlapped.
Furthermore, the inner layer noise reduction cover is provided with a first connecting hole for the crankshaft to pass through, and the outer layer noise reduction cover is provided with a second connecting hole for the crankshaft to pass through.
The utility model provides a pump body subassembly, includes the bent axle, connects gradually last flange, cylinder and the lower flange on the bent axle, pump body subassembly still includes aforementioned pump body muffler, pump body muffler with go up flange joint.
A compressor comprises the pump body assembly.
Compared with the prior art, the invention has the following beneficial effects:
the invention is provided with the inner layer noise elimination cover and the outer layer noise elimination cover, the inner layer noise elimination cover is provided with a plurality of hollow inner layer resonance bodies, the resonance cavity expansion chambers are formed between the inner layer resonance bodies and the outer layer noise elimination cover, and the resonance frequency of each resonance cavity expansion chamber is different, thereby being capable of eliminating noises with different specific frequencies, integrally improving the noise elimination effect of the silencer, avoiding the damage of the compressor and an electric appliance using the compressor to the sound environment in the life of people, improving the comfort of the compressor and the electric appliance using the compressor, and expanding the application range of the compressor and the electric appliance using the compressor. On the other hand, an oil-gas separation cavity is formed between the inner-layer silencing cover and the outer-layer silencing cover, so that part of the refrigeration oil can be separated from the oil-gas mixture and flows back to an oil pool, the oil discharge rate is reduced, the good lubrication of internal parts of the compressor is ensured, and the reliability of the compressor is improved.
Drawings
Fig. 1 is a schematic cross-sectional structure view of a pump body muffler provided by the present invention.
Fig. 2 is another sectional view of the pump body silencer.
FIG. 3 is a top view of the pump body muffler.
FIG. 4 is a schematic view of the flow path of the oil and gas mixture within the pump body muffler.
FIG. 5 is a schematic view of the pump body assembly of the present invention.
The figure includes:
the device comprises an inner-layer muffling cover 1, an inner-layer resonator 11, a resonant cavity expansion chamber 12, a first chassis 13, a communicating hole 14, an inner exhaust hole 15, a first connecting hole 16, an outer-layer muffling cover 2, a second chassis 21, an oil return hole 22, an outer exhaust hole 23, a second connecting hole 24, a gas-liquid separation cavity 3, a crankshaft 4, an upper flange 5, a cylinder 6 and a lower flange 7.
Detailed Description
To facilitate an understanding of the present invention for those skilled in the art, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
Referring to fig. 1 to 5, the pump body muffler provided by the present invention is connected to a crankshaft 4 of a pump body assembly of a compressor, and includes an inner muffling cover 1 connected to the pump body assembly, and an outer muffling cover 2 sleeved on the inner muffling cover, wherein a space is provided between the inner muffling cover 1 and the outer muffling cover 2, and the space between the inner muffling cover 1 and the outer muffling cover 2 forms a gas-liquid separation chamber 3, and the gas-liquid separation chamber 3 is a structure with a large top and a small bottom in this embodiment. A plurality of hollow inner layer resonance bodies 11 are arranged on one side of the top surface of the inner layer muffling cover 1 facing the outer layer muffling cover 2, the tail ends of the inner layer resonance bodies 11 are in contact with the outer layer muffling cover 2, so that the inside of the inner layer resonance bodies 11 forms a resonant cavity expansion chamber 12, and the resonant frequencies of the resonant cavity expansion chambers 12 inside the inner layer resonance bodies 11 are different; the resonant cavity expansion chamber 12 communicates with the interior of the inner muffler shell 1. The resonant cavity expansion chamber 12 communicates with the inside of the inner muffler shell 1 through a communication hole 14.
The different resonant cavities expand the resonant frequency of the chamber 12 can be achieved by sizing differently. The resonance chamber expansion chamber 12 is a closed cavity with a volume V, the resonance chamber expansion chamber 12 communicates with the inside (also referred to as an inner cavity) of the inner muffler cover 1 through a communication hole 14 with a cross-sectional area S and a length L, the muffling frequency of the resonance chamber is determined by V, S, L, and the fundamental frequency of the resonance noise of the resonance chamber expansion chamber 12 is:
thus, the resonant frequency can be changed by merely changing the size of the expansion chamber 12 of the resonant cavity. In this embodiment, 3 inner resonators 11 are provided to form 3 resonant cavity expansion chambers 12, and each resonant cavity expansion chamber 12 has a different size, so as to reduce exhaust noise with different frequencies. Of course, it is also possible to implement the resonant cavities to expand the chambers 12 with the same frequency to reduce a certain noise.
The bottom of the inner layer muffling cover 1 is turned outwards to form a first chassis 13, the bottom of the outer layer muffling cover is turned outwards to form a second chassis 21, and the second chassis 21 is connected to the first chassis 13. In this embodiment, the outer peripheries of the first chassis 13 and the second chassis 21 are both circular.
The inner layer resonator is cylindrical, and can be in other shapes in specific implementation, such as a rectangular body, a polygonal column (including a triangular prism, a quadrangular prism, a pentagonal prism and the like), a truncated cone, a trapezoidal frustum and the like.
The side of the outer layer silencing cover 2 is provided with a plurality of oil return holes 22, so that oil separated by the oil-gas mixture can flow out conveniently.
The side of the inner layer muffling cover 1 is provided with an inner exhaust hole 15, the side of the outer layer muffling cover 2 is provided with an outer exhaust hole 23, and the positions of the inner exhaust hole 15 and the outer exhaust hole 23 are not overlapped (not directly communicated), that is, the inner exhaust hole 15 and the outer exhaust hole 23 are distributed in two different directions with the axis of the crankshaft 4 as a reference. In this embodiment, the outer exhaust holes 23 of the inner exhaust holes 15 have the same height.
The inner layer muffling cover 1 is provided with a first connecting hole 16 through which the crankshaft 4 passes, and the outer layer muffling cover 2 is provided with a second connecting hole 24 through which the crankshaft 4 passes.
During specific work, the air-oil mixture body is discharged through the exhaust port arranged on the upper flange 5 and enters the inner-layer silencing cover 1 after the air cylinder 6 finishes compression, the inner-layer silencing cover 1 is an impedance type silencer, the air-oil mixture body discharged by the upper flange 5 flows in the air-oil separation cavity after flowing through the inner-layer silencing cover 1, the air-oil separation cavity is of a structure with a large upper part and a small lower part due to different viscosities of refrigerant and refrigeration oil, the high-speed air-oil mixture body finishes separation of part of refrigeration oil under the centrifugal action, the separated refrigeration oil flows out from the oil return hole 22, and the residual air-oil mixture body is discharged into the shell of the compressor through the outer exhaust hole 23 (the flow path of the air-oil mixture body is shown in figure 4).
Of course, in the actual implementation of the muffler of the present invention, another embodiment may be adopted as long as the end sealing of the inner layer resonator body 11 is ensured, that is, the resonant cavity expansion chamber 12 can be formed, for example, the end sealing of the inner layer resonator body 11 is completed by directly replacing the outer layer muffler cover 2 with a film.
The utility model provides a pump body subassembly, includes bent axle 4, connects gradually last flange 5, cylinder 6 and lower flange 7 on bent axle 4, pump body subassembly still includes aforementioned pump body muffler, pump body muffler with go up flange 5 and be connected. In specific implementation, the first chassis 13 of the inner muffling cover 1 and the second chassis 21 of the outer muffling cover 2 are distributed with the same screw holes, so that the two can be fixed on the pump body assembly by using screws.
A compressor comprises the pump body assembly.
The invention is provided with the inner layer noise elimination cover and the outer layer noise elimination cover, the inner layer noise elimination cover is provided with a plurality of hollow inner layer resonance bodies, the resonance cavity expansion chambers are formed between the inner layer resonance bodies and the outer layer noise elimination cover, and the resonance frequency of each resonance cavity expansion chamber is different, thereby being capable of eliminating noises with different specific frequencies, integrally improving the noise elimination effect of the silencer, avoiding the damage of the compressor and an electric appliance using the compressor to the sound environment in the life of people, improving the comfort of the compressor and the electric appliance using the compressor, and expanding the application range of the compressor and the electric appliance using the compressor. On the other hand, an oil-gas separation cavity is formed between the inner-layer silencing cover and the outer-layer silencing cover, so that part of the refrigeration oil can be separated from the oil-gas mixture and flows back to the oil pool, the oil discharge rate is reduced, the good lubrication of internal parts of the compressor is ensured, and the reliability of the compressor is improved.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently attached, removably attached, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the scope of the included claims.
Claims (10)
1. A pump body silencer is connected with a crankshaft of a pump body component of a compressor and is characterized by comprising an inner-layer silencing cover connected with the pump body component, and an outer-layer silencing cover sleeved on the inner-layer silencing cover, wherein a gap is formed between the inner-layer silencing cover and the outer-layer silencing cover, the gap between the inner-layer silencing cover and the outer-layer silencing cover forms a gas-liquid separation cavity, a plurality of hollow inner-layer resonators are arranged on one side, facing the outer-layer silencing cover, of the top surface of the inner-layer silencing cover, the tail ends of the inner-layer resonators are in contact with the outer-layer silencing cover, so that the interior of the inner-layer resonators forms a resonant cavity expansion chamber, and the resonant frequencies of the expansion resonant cavities in the inner-layer resonators are different; the resonant cavity expansion chamber is communicated with the interior of the inner layer sound-deadening hood.
2. The pump body muffler of claim 1, wherein the bottom of the inner muffler shell is folded outwardly to form a first base plate, and the bottom of the outer muffler shell is folded outwardly to form a second base plate, the second base plate being connected to the first base plate.
3. The pump body muffler of claim 2, wherein the outer peripheries of the first and second bottom discs are circular.
4. The pump body muffler according to claim 1, wherein the resonance chamber expansion chamber communicates with an interior of the inner muffling cover through a communication hole.
5. The pump body muffler according to claim 1, wherein the inner resonance body is cylindrical.
6. The pump body muffler of claim 1, wherein a side of the outer muffler shell is provided with a plurality of oil return holes.
7. The pump body muffler according to claim 1, wherein the inner muffler cover is provided with inner exhaust holes on a side surface thereof, the outer muffler cover is provided with outer exhaust holes on a side surface thereof, and the inner exhaust holes and the outer exhaust holes are not overlapped in position.
8. The pump body muffler according to claim 1, wherein the inner muffling cover is provided with a first connecting hole through which the crankshaft passes, and the outer muffling cover is provided with a second connecting hole through which the crankshaft passes.
9. A pump body assembly comprising a crankshaft, an upper flange, a cylinder and a lower flange connected to the crankshaft in sequence, characterized in that the pump body assembly further comprises a pump body silencer according to any one of claims 1 to 8, the pump body silencer being connected to the upper flange.
10. A compressor comprising the pump body assembly of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010917350.XA CN112196801B (en) | 2020-09-03 | 2020-09-03 | Pump body muffler, pump body subassembly and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010917350.XA CN112196801B (en) | 2020-09-03 | 2020-09-03 | Pump body muffler, pump body subassembly and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112196801A CN112196801A (en) | 2021-01-08 |
| CN112196801B true CN112196801B (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010917350.XA Active CN112196801B (en) | 2020-09-03 | 2020-09-03 | Pump body muffler, pump body subassembly and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112196801B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810606A (en) * | 2021-01-22 | 2022-07-29 | 上海海立电器有限公司 | Silencer and rotor compressor comprising same |
| CN113446226B (en) * | 2021-07-14 | 2022-12-13 | 珠海格力电器股份有限公司 | Compressor oil-gas separation assembly, compression mechanism and air conditioning system |
| CN114483587B (en) * | 2022-01-05 | 2023-01-06 | 珠海格力电器股份有限公司 | Silencer assembly, pump body assembly and compressor |
| CN115288980A (en) * | 2022-08-17 | 2022-11-04 | 广东美芝制冷设备有限公司 | Muffler and compressor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100531911B1 (en) * | 2003-10-28 | 2005-11-29 | 엘지전자 주식회사 | Muffler structure of hermetic rotary compressor |
| CN2692382Y (en) * | 2004-03-17 | 2005-04-13 | 上海日立电器有限公司 | Bilayer dual expanding noise suppressor |
| JP4844542B2 (en) * | 2007-11-22 | 2011-12-28 | 株式会社富士通ゼネラル | Rotary compressor |
| CN104343692B (en) * | 2013-08-07 | 2017-03-01 | 珠海格力节能环保制冷技术研究中心有限公司 | The noise reduction assembly of compressor and there is its compressor |
| CN209195627U (en) * | 2018-09-06 | 2019-08-02 | 珠海凌达压缩机有限公司 | Silencer and compressor with same |
-
2020
- 2020-09-03 CN CN202010917350.XA patent/CN112196801B/en active Active
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| Publication number | Publication date |
|---|---|
| CN112196801A (en) | 2021-01-08 |
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