CN106766083A - A kind of muffler and the air-conditioning comprising the muffler - Google Patents
A kind of muffler and the air-conditioning comprising the muffler Download PDFInfo
- Publication number
- CN106766083A CN106766083A CN201611111364.2A CN201611111364A CN106766083A CN 106766083 A CN106766083 A CN 106766083A CN 201611111364 A CN201611111364 A CN 201611111364A CN 106766083 A CN106766083 A CN 106766083A
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- Prior art keywords
- cavity
- muffler
- necking
- air
- refrigerant
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/12—Vibration or noise prevention thereof
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Exhaust Silencers (AREA)
Abstract
A kind of air-conditioning the invention discloses muffler and comprising the muffler, muffler includes distributor, the first cavity and the second cavity, first cavity includes the first cavity, First Transition chamber and the first necking, second cavity includes connector, the second adapter cavity, the second cavity, the 3rd adapter cavity and the second necking, and distributor includes the 3rd necking, the 4th adapter cavity and the 3rd cavity.Muffler can cause the flow path of refrigerant by repeatedly extension and shrink that each section of cavity is mutually staggered by frequency, elimination multi-wavelength, the sound of multi-frequency can expand noise reduction frequency range.Muffler can smash the bubble in the refrigerant of gas-liquid mixture phase so that the flowing of refrigerant is more uniform, also have improvement well to piping stress and vibration aspect.Muffler can pat vebrato and play good sound deadening to the press transmission sound in air-conditioning system, refrigerant flow noise and pipeline, can improve total sound-damping qualities.
Description
Technical field
The present invention relates to noise control technical field, a kind of muffler and the sky comprising the muffler are related in particular to
Adjust.
Background technology
Convertible frequency air-conditioner is the dedicated compressor that frequency conversion has been selected on the basis of common air-conditioning, increased VFC system
System, can automatically provide required energy according to the temperature in room.I.e. after indoor temperature reaches setting value, air-conditioner host then can
Keep the constant rotational speed of this temperature to operate, realize the temperature of temperature.Rotating speed directly influences service efficiency, and frequency converter is exactly to use
Come the control system for controlling and adjusting compressor rotary speed, the ratio for being allowed to be showed in terms of energy-conservation and comfortableness is more prominent, but
In terms of there is noise in operation work.Convertible frequency air-conditioner running frequency in the process of running is raised, the noise of outdoor unit
It is more obvious, and have the ear-piercing high frequency sound of comparing；Outdoor unit in low-frequency operation, indoor function send " drone " etc. abnormal sound
Ring, it is especially particularly evident in night's rest.As living standards of the people are improved, particularly air conditioning applications popularization, air-conditioning is made an uproar
Sound has badly influenced people's daily life, and extensive concern is just turned into the effectively preventing and treating of electromechanical equipment noise in air-conditioning system
Problem.
Air-conditioning noise is often to install muffler additional in air-conditioning four-way valve member to eliminate airduct medium-high frequency noise with sound-silencing measures
And low frequency noise.Muffler is that domestic air conditioning and central air-conditioning often use accessory, is generally used for controlling aerodynamic noise, is profit
Acted on the sound reflecting at device in the duct acoustical behavior mutation, unexpected extension, contraction or side by means of pipeline interface connect
Resonant cavity, produces acoustic impedance mismatch, makes the sound wave of some frequencies that reflection, interference etc. occur in the interface that acoustic impedance is mutated existing
As so as to reach the purpose of noise reduction.Muffler is usually mounted to import and export or the gas flow tube of rotor compressor or screw compressor
On road, both allowed air-flow to be smoothly through, and can effectively prevent or weaken acoustic energy outwards to propagate again.
In current frequency-conversion air-conditioning system, muffler is generally unistage type expansion chambers muffler, is using the prominent of pipeline section
So expansion（Or shrink）Cause in passage acoustic impedance to be mutated, make to can't pass muffler along the sound wave of some frequencies of pipe transmmision and
Sound source is reflected back to go.Because sound wave can't pass muffler, also just pass not out, so as to reach the purpose of noise reduction.Unistage type is expanded
Room muffler can only filter out the single noise under a kind of frequency, can only play sound deadening to some frequency contents, and allow another
A little frequency contents are passed through.Due to transducer air conditioning operationally, different wave length can be sent in different frequency sections compressor
Sound, so unistage type expansion chambers muffler can only play sound deadening in specific frequency band to the sound of specific wavelength, its
Effect is just greatly limited.And the existing most complex structure of muffler, volume is larger, occupies the sky of air-conditioning system
Between it is larger.
The content of the invention
Air-conditioning it is an object of the invention to provide a kind of muffler and comprising the muffler, to solve existing muffler
Noise reduction narrow range, the low defect of sound-damping qualities so that air-conditioning meets noise requirements.
Therefore, the invention provides a kind of muffler, including the first cavity and the second cavity, first cavity include according to
First cavity of secondary connection, First Transition chamber and the first necking, the sectional area of first necking is less than first cavity
Sectional area；Second cavity includes the connector, the second adapter cavity, the second cavity, the 3rd adapter cavity and second that are sequentially connected
Necking, the sectional area of the sectional area more than second cavity of the connector, the sectional area of second necking is less than described
The sectional area of the second cavity；First cavity is set in second cavity by the connector, first cavity
Expose outside the connector；Also include distributor, the distributor includes the 3rd necking, the 4th adapter cavity and the 3rd cavity, institute
State the sectional area of the sectional area less than the 3rd cavity of the 3rd necking；One end of 3rd cavity is plugged in first chamber
In body, one end of the 3rd cavity is provided with distributing pore plate, and the distributing pore plate is provided with multiple dispensing orifices.
Present invention also offers a kind of air-conditioning, including muffler, the muffler is muffler as described above.
Compared with prior art, advantages and positive effects of the present invention are：The invention provides a kind of muffler, including point
The series connection of orchestration, the first cavity and the second cavity, can cause the flow path of refrigerant by repeatedly extension and shrink, and can make each
Section cavity is mutually staggered by frequency, eliminates multi-wavelength, the sound of multi-frequency, such that it is able to expand noise reduction frequency range,
And then whole noise reduction frequency characteristic can be improved.Muffler of the invention can smash the gas in the refrigerant of gas-liquid mixture phase
Bubble so that the flowing of refrigerant is more uniform, also has improvement well to piping stress and vibration aspect.Muffler of the present invention can be with
Press transmission sound in air-conditioning system, refrigerant flow noise and pipeline are patted by vebrato and play good sound deadening, Ke Yiti
Total sound-damping qualities high.Because compressor of air conditioner can produce different sound under different running frequencies, so of the invention disappear
The noise reduction scope of sound device is wider.And muffler structure of the present invention is simple, small volume, good muffling effect is got in air-conditioning
More to minimize, under the higher and higher trend of noise requirements, muffler of the invention has very big application value and advantage.
Present invention also offers a kind of air-conditioning, including muffler as described above, can allow that air-conditioning system noise meets various
It is required that.
After specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Brief description of the drawings
Fig. 1 is the front view of the first cavity of muffler of the present invention；
Fig. 2 is the left view of the first cavity of muffler of the present invention；
Fig. 3 is the front view of the second cavity of muffler of the present invention；
Fig. 4 is the left view of the second cavity of muffler of the present invention；
Fig. 5 is the front view of the distributor of muffler of the present invention；
Fig. 6 is the front view of the distributing pore plate of muffler of the present invention；
Fig. 7 is the structural representation of muffler of the present invention；
Fig. 8 is the frequency response comparison diagram of the embodiment 1 of air-conditioning of the present invention；
Fig. 9 is the frequency response comparison diagram of the embodiment 2 of air-conditioning of the present invention；
In Fig. 1-Fig. 7, reference and its corresponding component names are as follows：
1. the first cavity；11. first cavitys；12. First Transition chambers；13. first neckings；2. the second cavity；21. connectors；22.
Second adapter cavity；23. second cavitys；24. the 3rd adapter cavities；25. second neckings；3. distributor；31. the 3rd neckings；32. the 4th
Adapter cavity；33. the 3rd cavitys.
Specific embodiment
Specific embodiment of the invention is described in detail below, it should be appreciated that described herein specific
Implementation method is merely to illustrate and explain the present invention, and is not intended to limit the invention.
As shown in Fig. 1-Fig. 7, muffler of the invention includes the first cavity 1 and the second cavity 2, the first cavity 1 include according to
First cavity 11 of secondary connection, the necking 13 of First Transition chamber 12 and first, the sectional area of the first necking 13 are less than the first cavity 11
Sectional area；Second cavity 2 includes the connector 21, the second adapter cavity 22, the second cavity 23, the 3rd adapter cavity 24 that are sequentially connected
With the second necking 25, more than the sectional area of the second cavity 23, the sectional area of the second necking 25 is less than for the sectional area of connector 21
The sectional area of two cavitys 23；First cavity 1 is set in the second cavity 2 by connector 21, and the first cavity 11 exposes outside connection
Mouth 21.Muffler of the invention also includes distributor 3, and distributor 3 includes the 3rd necking 31, the 4th adapter cavity 32 and the 3rd cavity
33, the sectional area of the sectional area less than the 3rd cavity 33 of the 3rd necking 31；One end of 3rd cavity 33 is plugged in the first cavity 11
In, one end of the 3rd cavity 33 is provided with distributing pore plate 34, and distributing pore plate 34 is provided with multiple dispensing orifices 35.
Muffler of the invention is acted on using the sound reflecting at device in the duct acoustical behavior mutation, by means of pipeline circle
The unexpected extension and contraction in face, produce acoustic impedance mismatch, the sound wave of some frequencies is occurred instead in the interface that acoustic impedance is mutated
The phenomenon such as penetrate and interfere, so as to reach the purpose of noise reduction.
The course of work of muffler of the invention is as follows：The refrigerant of gas-liquid mixture phase flows through cold distributor 3, first successively
The cavity 2 of cavity 1 and second；
1. refrigerant flows through distributor 3：Refrigerant enters the 3rd cavity 32 from the 3rd necking 31, due to the sectional area of the 3rd necking 31
It is small
In the sectional area of the 3rd cavity 33 so that refrigerant by flow path one extension, such that it is able to eliminate a certain fixation
Frequency noise；Refrigerant continues towards distributing pore plate 34, and distributing pore plate 34 can break the refrigerant of bubble regime, plays preliminary disappearing
Sound is acted on, can be with mean allocation cold medium flux so that refrigerant equably flows to the first cavity 11, can effectively reduce refrigerant flowing
Sound；
2. refrigerant flows through the first cavity 1：Refrigerant flows to the first necking 13 from the first cavity 11 by First Transition chamber 12, due to
The sectional area of the first necking 13 less than the first cavity 11 sectional area so that refrigerant by flow path once contraction so that
A certain fixed frequency noise can be eliminated；
3. refrigerant flows through the second cavity 2：Refrigerant flows to the second cavity 21 from the first necking 13, due to cutting for the second cavity 21
More than the sectional area of the first necking 13 so that refrigerant by flow path one extension, it is a certain solid such that it is able to eliminate
Determine frequency noise；Refrigerant flows to the second necking 25 by the 3rd adapter cavity 24, because the sectional area of the second necking 25 is less than second
The sectional area of cavity 23 so that refrigerant by flow path once contraction, such that it is able to eliminate a certain fixed frequency noise.
Muffler of the invention is connected including distributor 3, the first cavity 1 and the second cavity 2, can cause the flowing of refrigerant
Path is by repeatedly extension and shrinks, and each section of cavity is mutually staggered by frequency, elimination multi-wavelength, multi-frequency
Sound, such that it is able to expand noise reduction frequency range, and then can improve whole noise reduction frequency characteristic.Muffler of the invention can be with
The bubble in the refrigerant of gas-liquid mixture phase is smashed so that the flowing of refrigerant is more uniform, to piping stress and vibration aspect
There is improvement well.Muffler of the present invention can be patted and shaken to the press transmission sound in air-conditioning system, refrigerant flow noise and pipeline
Dynamic sound plays good sound deadening, can improve total sound-damping qualities.Due to compressor of air conditioner meeting under different running frequencies
Different sound are produced, so the noise reduction scope of muffler of the invention is wider.And muffler structure letter of the present invention
Single, small volume, good muffling effect is increasingly minimized in air-conditioning, to the higher and higher trend of noise requirements under, it is of the invention to disappear
Sound utensil has very big application value and advantage.
The ratio of the diameter of the diameter of the first necking 13 and the first cavity 11 is 0.26:1-0.28:1, first can be caused
Cavity 1 reaches optimal erasure effect.Preferably, the diameter of the first necking 13 can be 7.4mm, and the diameter of the first cavity 11 can
Think 27.1mm.
The ratio of the diameter of the diameter of the second necking 25 and the second cavity 23 is 0.43:1-0.45:1, second can be caused
Cavity 2 reaches optimal erasure effect.Preferably, the diameter of the second necking 25 can be 12mm, and the diameter of the second cavity 23 can
Think 27.1mm.
The ratio of the diameter of the 3rd necking 31 and the diameter of the 3rd cavity 33 is 0.42:1-0.45:1, distribution can be caused
Device 3 reaches optimal erasure effect.Preferably, the diameter of the 3rd necking 31 can be 25.4mm, and the diameter of the 3rd cavity 33 can
Think 10.9mm.
A diameter of 28 mm-32mm of connector 21, it is preferable that the diameter of connector 21 can be 30mm.Connector 21
The diameter with diameter greater than the first cavity 11 so that the first cavity 1 is plugged in connector 21.
The diameter of the first cavity 11 is equal to the diameter of the second cavity 23.
The number of dispensing orifice 35 is 2-6, and the aperture of dispensing orifice 35 is 4.5-5mm, can cause that distributing pore plate 34 reaches
Optimal distribution effects.Preferably, the aperture of dispensing orifice 35 is 4.8mm.
, more than the length of the 3rd cavity 33, the length of the 3rd cavity 33 is more than the first cavity 11 for the length of the second cavity 34
Length, it is ensured that refrigerant outflow muffler before can in the second cavity 34 by one section more long, smoothly flow road
Footpath, can improve total sound-damping qualities.
First cavity 1, the second cavity 2 and distributor 3 are prepared by red copper, and are integrally formed by mould, so may be used
The manufacturing cost of silencing means is reduced to greatest extent, is conducive to batch production.First cavity 1 of the invention, the and of the second cavity 2
The size of distributor 3 is not limited to the restriction of the present embodiment, can be according to actual air-conditioning system noise and processing cost aspect
Requirement carry out the adjustment of length and diameter so that muffler can be applied to the air-conditioner of different model, to various air-conditioning pressures
Contracting machine carries out noise reduction.
The First Transition chamber 12 of the first cavity 1 is conical structure, is conducive to refrigerant to carry out steady flow in the first cavity 1
It is dynamic, pat vebrato such that it is able to reduce refrigerant flow noise and pipeline.The heavy caliber end in First Transition chamber 12 and the first cavity 11
It is fixedly connected, the small-caliber end in First Transition chamber 12 is fixedly connected with the first necking 13.
3rd adapter cavity 24 of the second cavity 2 is conical structure, is conducive to refrigerant to carry out steady flow in the second cavity 2
It is dynamic, pat vebrato such that it is able to reduce refrigerant flow noise and pipeline.The heavy caliber end of the 3rd adapter cavity 24 and the second necking 25
It is fixedly connected, the small-caliber end of the 3rd adapter cavity 24 is fixedly connected with the second cavity 23.
4th adapter cavity 32 of distributor 3 is conical structure, is conducive to refrigerant that smooth flow is carried out in distributor 3,
Vebrato is patted such that it is able to reduce refrigerant flow noise and pipeline.The heavy caliber end of the 4th adapter cavity 32 is consolidated with 33 the 3rd cavitys 33
Fixed connection, the small-caliber end of the 4th adapter cavity 32 is fixedly connected with the 3rd necking 31.
Fig. 7 is the structural representation of muffler of the present invention, in order that the structure for obtaining muffler is more clear directly perceived, first is empty
The structure that chamber 1 is set in inside the second cavity 2 is indicated by the solid line.
Present invention also offers a kind of air-conditioning, including muffler, muffler is muffler as described above, and muffler is installed
In refrigeration compressor ventilating mouthful.As a result of muffler of the invention, air-conditioning system noise of the invention can meet various
It is required that.
Embodiment 1
The number of the dispensing orifice 35 of the muffler of the air-conditioning of the present embodiment is 2, as shown in figure 8, sky of the solid line for the present embodiment
The frequency response chart of tune, dotted line is the frequency response chart of the air-conditioning for being not provided with muffler.By contrast, and it is not provided with
The air-conditioning of muffler is compared, and the air-conditioning of the present embodiment can play obvious filtering sound deadening to the noise of 4 kinds of frequencies, can be with
Expand noise reduction frequency range, and then whole noise reduction frequency characteristic can be improved, the air-conditioning of the present embodiment has obvious noise reduction excellent
Gesture.
Embodiment 2
The number of the dispensing orifice 35 of the muffler of the air-conditioning of the present embodiment is 6, as shown in figure 9, sky of the solid line for the present embodiment
The frequency response chart of tune, dotted line is the frequency response chart of the air-conditioning for being not provided with muffler.By contrast, and it is not provided with
The air-conditioning of muffler is compared, and the air-conditioning of the present embodiment can play obvious filtering sound deadening to the noise of 4 kinds of frequencies, can be with
Expand noise reduction frequency range, and then whole noise reduction frequency characteristic can be improved, the air-conditioning of the present embodiment has obvious noise reduction excellent
Gesture.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing reality
Example is applied to be described in detail the present invention, for the person of ordinary skill of the art, still can be to foregoing implementation
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replace
Change, do not make the spirit and scope of the essence disengaging claimed technical solution of the invention of appropriate technical solution.
Claims (10)
1. a kind of muffler, it is characterised in that including the first cavity and the second cavity,
First cavity includes the first cavity, First Transition chamber and the first necking that are sequentially connected, and first necking cuts
Sectional area of the area less than first cavity；Second cavity includes the connector, the second adapter cavity, second that are sequentially connected
Cavity, the 3rd adapter cavity and the second necking, the sectional area of the sectional area more than second cavity of the connector, described second
Sectional area of the sectional area of necking less than second cavity；First cavity is set in described second by the connector
In cavity, first cavity exposes outside the connector；
Also include distributor, the distributor include the 3rd necking, the 4th adapter cavity and the 3rd cavity, the 3rd necking cut
Sectional area of the area less than the 3rd cavity；One end of 3rd cavity is plugged in first cavity, and the described 3rd
One end of cavity is provided with distributing pore plate, and the distributing pore plate is provided with multiple dispensing orifices.
2. muffler as claimed in claim 1, it is characterised in that
The diameter of first necking is 0.26 with the ratio of the diameter of first cavity:1-0.28:1.
3. muffler as claimed in claim 1, it is characterised in that
The diameter of second necking is 0.43 with the ratio of the diameter of second cavity:1-0.45:1.
4. muffler as claimed in claim 1, it is characterised in that
The diameter of the 3rd necking is 0.42 with the ratio of the diameter of the 3rd cavity:1-0.45:1.
5. muffler as claimed in claim 1, it is characterised in that
A diameter of 28 mm-32mm of the connector.
6. muffler as claimed in claim 1, it is characterised in that
The diameter of first cavity is equal to the diameter of second cavity.
7. muffler as claimed in claim 1, it is characterised in that
The number of the dispensing orifice is 2-6, and the aperture of the dispensing orifice is 4.5-5mm.
8. muffler as claimed in claim 1, it is characterised in that
, more than the length of the 3rd cavity, the length of the 3rd cavity is more than first chamber for the length of second cavity
The length of body.
9. muffler as claimed in claim 1, it is characterised in that
First cavity, second cavity and the distributor are prepared by red copper.
10. a kind of air-conditioning, including muffler, it is characterised in that the muffler is disappearing any one of claim 1-9
Sound device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111364.2A CN106766083B (en) | 2016-12-06 | 2016-12-06 | A kind of muffler and the air-conditioning comprising the muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111364.2A CN106766083B (en) | 2016-12-06 | 2016-12-06 | A kind of muffler and the air-conditioning comprising the muffler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106766083A true CN106766083A (en) | 2017-05-31 |
| CN106766083B CN106766083B (en) | 2019-11-08 |
Family
ID=58874503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611111364.2A Active CN106766083B (en) | 2016-12-06 | 2016-12-06 | A kind of muffler and the air-conditioning comprising the muffler |
Country Status (1)
| Country | Link |
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| CN (1) | CN106766083B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426390A (en) * | 2018-06-11 | 2018-08-21 | 广东美的制冷设备有限公司 | Flow mixing device and household appliance |
| CN108759188A (en) * | 2018-06-11 | 2018-11-06 | 广东美的制冷设备有限公司 | Flow mixing device and household appliance |
| CN108759191A (en) * | 2018-06-11 | 2018-11-06 | 广东美的制冷设备有限公司 | Flow mixing device and household appliance |
| CN108759190A (en) * | 2018-06-11 | 2018-11-06 | 广东美的制冷设备有限公司 | Flow mixing device and household appliance |
| CN109996959A (en) * | 2017-03-24 | 2019-07-09 | 三菱重工制冷空调系统株式会社 | Muffler and air regulator |
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| CN1052180A (en) * | 1991-01-16 | 1991-06-12 | 徐火炬 | Broad-band strip-type silencer |
| CN1467440A (en) * | 2002-06-12 | 2004-01-14 | Lg电子株式会社 | Heating/cooling system used in air conditioner |
| CN101709903A (en) * | 2009-12-30 | 2010-05-19 | 宁波奥克斯空调有限公司 | Air conditioner muffler |
| CN102494396A (en) * | 2011-12-30 | 2012-06-13 | 胡德林 | Air-conditioning muffler and manufacturing method thereof |
| GB2514824A (en) * | 2013-06-06 | 2014-12-10 | Russell Wheeler | Sound attenuator with irregular array of internal ducts |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052180A (en) * | 1991-01-16 | 1991-06-12 | 徐火炬 | Broad-band strip-type silencer |
| CN1467440A (en) * | 2002-06-12 | 2004-01-14 | Lg电子株式会社 | Heating/cooling system used in air conditioner |
| CN101709903A (en) * | 2009-12-30 | 2010-05-19 | 宁波奥克斯空调有限公司 | Air conditioner muffler |
| CN102494396A (en) * | 2011-12-30 | 2012-06-13 | 胡德林 | Air-conditioning muffler and manufacturing method thereof |
| GB2514824A (en) * | 2013-06-06 | 2014-12-10 | Russell Wheeler | Sound attenuator with irregular array of internal ducts |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109996959A (en) * | 2017-03-24 | 2019-07-09 | 三菱重工制冷空调系统株式会社 | Muffler and air regulator |
| CN108426390A (en) * | 2018-06-11 | 2018-08-21 | 广东美的制冷设备有限公司 | Flow mixing device and household appliance |
| CN108759188A (en) * | 2018-06-11 | 2018-11-06 | 广东美的制冷设备有限公司 | Flow mixing device and household appliance |
| CN108759191A (en) * | 2018-06-11 | 2018-11-06 | 广东美的制冷设备有限公司 | Flow mixing device and household appliance |
| CN108759190A (en) * | 2018-06-11 | 2018-11-06 | 广东美的制冷设备有限公司 | Flow mixing device and household appliance |
| CN108759188B (en) * | 2018-06-11 | 2024-05-14 | 广东美的制冷设备有限公司 | Mixer and household appliance |
| CN108426390B (en) * | 2018-06-11 | 2024-05-14 | 广东美的制冷设备有限公司 | Mixer and household appliance |
| CN108759191B (en) * | 2018-06-11 | 2024-05-17 | 广东美的制冷设备有限公司 | Mixer and household appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106766083B (en) | 2019-11-08 |
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