CN110285573A - A kind of connection structure of air-heater increasing enthalpy pipeline - Google Patents
A kind of connection structure of air-heater increasing enthalpy pipeline Download PDFInfo
- Publication number
- CN110285573A CN110285573A CN201910601297.XA CN201910601297A CN110285573A CN 110285573 A CN110285573 A CN 110285573A CN 201910601297 A CN201910601297 A CN 201910601297A CN 110285573 A CN110285573 A CN 110285573A
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- China
- Prior art keywords
- vertical pipe
- increasing enthalpy
- air
- heater
- connection structure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/0335—Noise absorbers by means of external rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/041—Devices damping pulsations or vibrations in fluids specially adapted for preventing vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/06—Air heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pipe Accessories (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of air-heater connection structures of increasing enthalpy pipeline, belong to air-heater technical field.The present invention includes increasing enthalpy device and electric expansion valve; increasing enthalpy device is connected with electric expansion valve by pipeline; pipeline includes the more vertical pipes connected by U-tube, and U-tube is wrapped with shockproof glue, and shockproof glue includes fastening buffer layer, sound absorbing layer and the protective layer set gradually from inside to outside.Of the invention is mainly used for can effectively reduce noise caused by increasing enthalpy pipeline shakes, and meets required damping noise reduction effect on increasing enthalpy pipeline, is wrapped on increasing enthalpy pipeline meanwhile, it is capable to fasten, and avoids obscission, and install easy to operate.
Description
Technical field
The invention belongs to air-heater technical fields, more specifically to a kind of connection knot of air-heater increasing enthalpy pipeline
Structure.
Background technique
Increasing enthalpy pipeline generally includes pipeline fitting, silencer and electric expansion valve and shut-off valve, at low ambient temperatures,
Compressor suction inlet temperature and pressure can be effectively improved, make hot wind unit in the presence of a harsh environment can efficient operation, both met low
The requirement of powerful heating under environment temperature, while relying primarily on outdoor air heat and carrying out heating indoor air, save a large amount of electricity
Power resource.But periodically height variation, and increasing enthalpy pipeline is presented in its internal pressure to Gas-supplying enthalpy-increasing compressor in the process of running
In refrigerant pressure be also not unalterable, increasing enthalpy pipe is flowed through in the form of the fluid pulse of disorder so as to cause refrigerant
Road, the fluid pulse by disorder are influenced, and the vibration of increasing enthalpy pipeline is very violent and the amplitude shaken and period are non-rules
Property, and increasing enthalpy pipeline is chronically in this vibration the risk that will certainly have fracture, so that influencing the normal of air-heater can
By operation.
In view of the above-mentioned problems, in the prior art by adding sound deadening shock absorption device on increasing enthalpy pipeline, to reach certain
Sound deadening shock absorption effect, but there is also not to noise problem caused by increasing enthalpy pipeline shakes is reduced for sound deadening shock absorption device used at present
Foot, and be difficult to fasten and be wrapped on increasing enthalpy pipeline, there are problems easy to fall off, so that sound deadening shock absorption effect is further decreased, meanwhile,
There is also install the problems such as inconvenient for sound deadening shock absorption device used in the prior art.
Summary of the invention
Technical problems to be solved by the inivention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of connection structure of air-heater increasing enthalpy pipeline is provided,
Using technical solution of the present invention, noise caused by increasing enthalpy pipeline shakes can effectively reduce, required for meeting on increasing enthalpy pipeline
Damping noise reduction effect is wrapped on increasing enthalpy pipeline meanwhile, it is capable to fasten, and avoids obscission, and install easy to operate.
Technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of connection structure of air-heater increasing enthalpy pipeline of the invention, including increasing enthalpy device and electric expansion valve, the increasing enthalpy device
It is connected with electric expansion valve by pipeline, the pipeline includes the more vertical pipes connected by U-tube, the U-tube outsourcing
It is wrapped with shockproof glue, the shockproof glue includes fastening buffer layer, sound absorbing layer and the protective layer set gradually from inside to outside.
Further, there is multiple rows of fastening damping knot in the upper surface of the fastening buffer layer along its width direction spaced set
Structure, every row fastens shock-damping structure, and successively fastening unit and vibration absorption unit is arranged in interval.
Further, the fastening unit is symmetrical step structure I, and the vibration absorption unit is symmetrical step structure
II, step structure I is higher than step structure II, and step structure I is formed with step structure II by fastening the upper surface of buffer layer
Continuous step structure.
Further, the step height of the continuous step structure is equal.
Further, the step height is 0.1-1mm.
Further, the step structure I and step structure II are three-level step.
Further, one end of the shockproof glue is run through in the width direction notch, and the cross sectional shape of the notch is interior
Portion's width is greater than opening width, and the other end of the shockproof glue is provided with zipper, the zipper protrude into notch and with notch phase
Cooperation.
Further, more vertical pipes include vertical pipe II, vertical pipe III, vertical pipe IV, vertical pipe V, VI and of vertical pipe
Vertical pipe VII, the vertical pipe II, vertical pipe III, vertical pipe IV, vertical pipe V, vertical pipe VI and vertical pipe VII its it is adjacent between
It is connected by U-tube, and the vertical pipe II, vertical pipe III, vertical pipe IV, vertical pipe V, vertical pipe VI and vertical pipe VII
Lower end is respectively positioned in same horizontal line, wherein the equal length of the vertical pipe II and vertical pipe VII, the vertical pipe III and perpendicular
The length of the equal length of straight tube IV, the equal length of the vertical pipe V and vertical pipe VI, and the vertical pipe II is maximum, vertically
The length of pipe III is taken second place, and the length of vertical pipe V is minimum.
Further, more vertical pipes further include vertical pipe I, and one end of the vertical pipe I passes through horizontal tube vertical pipe II
It is connected, the other end of the vertical pipe I is connected with increasing enthalpy device, and above-mentioned electric expansion valve is connected with vertical pipe VII.
Beneficial effect
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
(1) connection structure of a kind of air-heater increasing enthalpy pipeline of the invention fastens the upper surface of buffer layer along its width side
There is multiple rows of fastening shock-damping structure to spaced set, every row fastens shock-damping structure, and successively fastening unit and damping list is arranged in interval
Member, so as to utmostly realize sound deadening shock absorption effect.
(2) connection structure of a kind of air-heater increasing enthalpy pipeline of the invention, by the way that fastening unit to be designed as symmetrically
Step structure I may make fastening buffer layer fastening to be wrapped in the periphery of U-tube, obscission be avoided, to further mention
High sound deadening shock absorption effect.In addition, can avoid covibration by the way that vibration absorption unit is designed as symmetrical step structure II,
To reach sound deadening shock absorption effect.
(3) connection structure of a kind of air-heater increasing enthalpy pipeline of the invention, one end of shockproof glue is passed through in the width direction
It is installed with notch, the cross sectional shape of notch is that inner width is greater than opening width, and the other end of shockproof glue is provided with zipper, and zipper is stretched
Enter in notch and is matched with notch.It should be understood that the present invention designs with this configuration, the convenience of installation operation can be improved
Property.
(4) connection structure of a kind of air-heater increasing enthalpy pipeline of the invention, reasonable in design, principle is simple, is convenient for
It promotes the use of.
Detailed description of the invention
Fig. 1 is a kind of attachment structure schematic diagram of air-heater increasing enthalpy pipeline of the invention；
Fig. 2 is the structural schematic diagram that shockproof glue is in package status in the present invention；
Fig. 3 is the main view of Fig. 2；
Fig. 4 is the structural schematic diagram of damping fastened layer in the present invention；
Fig. 5 is the main view of Fig. 4.
Label declaration in schematic diagram:
1, increasing enthalpy device；
2, electric expansion valve；
31, vertical pipe I；32, horizontal tube；33, vertical pipe II；34, vertical pipe III；35, vertical pipe IV；36, vertical pipe V；37,
Vertical pipe VI；38, vertical pipe VII；39, U-tube；
4, shockproof glue；41, buffer layer is fastened；411, fastening unit；412, vibration absorption unit；42, sound absorbing layer；43, protective layer.
Specific embodiment
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of connection structure of air-heater increasing enthalpy pipeline of the present embodiment, including increase
Enthalpy device 1 and electric expansion valve 2, increasing enthalpy device 1 are connected with electric expansion valve 2 by pipeline, and pipeline includes more and connected by U-tube 39
The vertical pipe connect, U-tube 39 are wrapped with shockproof glue 4, shockproof glue 4 include the fastening buffer layer 41 set gradually from inside to outside,
Sound absorbing layer 42 and protective layer 43.It should be understood that due to being to realize to connect by U-tube 39 between vertical pipe, and U-shaped
Vibration at pipe 39 is particularly evident, and the present invention solves this technical problem by wrapping up shockproof glue 4 in 39 periphery of U-tube.It needs
To be further illustrated: the present invention realizes fastening and damping by fastening buffer layer 41, then realizes sound-absorbing by sound absorbing layer 42,
And protective layer 43 is set in outermost layer, so that noise caused by increasing enthalpy pipeline shakes is effectively reduced, needed for meeting on increasing enthalpy pipeline
The damping noise reduction effect wanted.
There are multiple rows of fastening shock-damping structure, every row's fastening in the upper surface for fastening buffer layer 41 along its width direction spaced set
Successively fastening unit 411 and vibration absorption unit 412 is arranged in interval to shock-damping structure.It should be understood that the present invention is single by fastening
Member 411 is fastened, and carries out damping by vibration absorption unit 412.It should be further noted that: the present invention is single by that will fasten
Member 411 and vibration absorption unit 412 are successively spaced setting, can utmostly realize sound deadening shock absorption effect.
Fastening unit 411 is symmetrical step structure I, and vibration absorption unit 412 is symmetrical step structure II, step structure I
Higher than step structure II, and step structure I and step structure II form continuous step knot by the upper surface of fastening buffer layer 41
The step height of structure, continuous step structure is equal, step height 0.1-1mm.Specifically in the present embodiment: I He of step structure
Step structure II is three-level step.It should be understood that the present invention is by being designed as symmetrical Step-edge Junction for fastening unit 411
Structure I may make fastening buffer layer 41 to fasten the periphery for being wrapped in U-tube 39, obscission be avoided, to further increase
Sound deadening shock absorption effect.It should be further noted that: the present invention is by being designed as symmetrical step structure for vibration absorption unit 412
II, it can avoid covibration, to reach sound deadening shock absorption effect.Need to further explain: the present invention passes through platform
Rank height is equal, and step height can further improve the fastening and damping effect of fastening buffer layer 41 within the scope of 0.1-1mm
Fruit.
One end of shockproof glue 4 is run through in the width direction notch, and the cross sectional shape of notch is that inner width is greater than opening width
Degree, the other end of shockproof glue 4 are provided with zipper, and zipper is protruded into notch and matched with notch.It should be understood that of the invention
It designs with this configuration, the convenience of installation operation can be improved.
More vertical pipes include vertical pipe II 33, vertical pipe III 34, vertical pipe IV 35, vertical pipe V 36, vertical pipe VI 37
With vertical pipe VII 38, vertical pipe II 33, vertical pipe III 34, vertical pipe IV 35, vertical pipe V 36, vertical pipe VI 37 and vertical pipe VII
38 its it is adjacent between be connected by U-tube 39, and the vertical pipe II 33, vertical pipe III 34, vertical pipe IV 35, vertical pipe V
36, the lower end of vertical pipe VI 37 and vertical pipe VII 38 is respectively positioned in same horizontal line, wherein vertical pipe II 33 and vertical pipe VII 38
Equal length, the equal length of vertical pipe III 34 and vertical pipe IV 35, the equal length of vertical pipe V 36 and vertical pipe VI 37,
And the length of the vertical pipe II 33 is maximum, the length of vertical pipe III 34 is taken second place, and the length of vertical pipe V 36 is minimum.Specifically in this reality
Apply in example: more vertical pipes further include vertical pipe I 31, and one end of vertical pipe I 31 is connected by 32 vertical pipe II 33 of horizontal tube, is erected
The other end of straight tube I 31 is connected with increasing enthalpy device 1, and above-mentioned electric expansion valve 2 is connected with vertical pipe VII 38.It should be understood that this
By the quantity of pipeline, the length of pipeline and the distribution of pipeline can further improve sound deadening shock absorption effect for invention.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (9)
1. a kind of air-heater connection structure of increasing enthalpy pipeline, it is characterised in that: including increasing enthalpy device (1) and electric expansion valve (2),
The increasing enthalpy device (1) is connected with electric expansion valve (2) by pipeline, and the pipeline includes more and connected by U-tube (39)
Vertical pipe, the U-tube (39) are wrapped with shockproof glue (4), and the shockproof glue (4) includes the fastening set gradually from inside to outside
Buffer layer (41), sound absorbing layer (42) and protective layer (43).
2. a kind of connection structure of air-heater increasing enthalpy pipeline according to claim 1, it is characterised in that: the fastening subtracts
There is multiple rows of fastening shock-damping structure in the upper surface for shaking layer (41) along its width direction spaced set, every row fasten shock-damping structure according to
Fastening unit (411) and vibration absorption unit (412) is arranged in minor tick.
3. a kind of connection structure of air-heater increasing enthalpy pipeline according to claim 2, it is characterised in that: the fastening is single
First (411) are symmetrical step structure I, and the vibration absorption unit (412) is symmetrical step structure II, and step structure I is higher than platform
Stage structure II, and step structure I and step structure II form continuous step structure by the upper surface of fastening buffer layer (41).
4. a kind of connection structure of air-heater increasing enthalpy pipeline according to claim 3, it is characterised in that: the continuous platform
The step height of stage structure is equal.
5. a kind of connection structure of air-heater increasing enthalpy pipeline according to claim 4, it is characterised in that: the step is high
Degree is 0.1-1mm.
6. a kind of connection structure of air-heater increasing enthalpy pipeline according to claim 3, it is characterised in that: the Step-edge Junction
Structure I and step structure II are three-level step.
7. a kind of connection structure of air-heater increasing enthalpy pipeline according to claim 1, it is characterised in that: the shockproof glue
(4) one end is run through in the width direction notch, and the cross sectional shape of the notch is that inner width is greater than opening width, described anti-
The other end of shake glue (4) is provided with zipper, and the zipper is protruded into notch and matched with notch.
8. a kind of connection structure of air-heater increasing enthalpy pipeline according to claim 1, it is characterised in that: more vertical pipes
Including vertical pipe II (33), vertical pipe III (34), vertical pipe IV (35), vertical pipe V (36), vertical pipe VI (37) and vertical pipe
VII (38), the vertical pipe II (33), vertical pipe III (34), vertical pipe IV (35), vertical pipe V (36), vertical pipe VI (37) and
Vertical pipe VII (38) its it is adjacent between be connected by U-tube (39), and it is the vertical pipe II (33), vertical pipe III (34), vertical
Pipe IV (35), vertical pipe V (36), vertical pipe VI (37) and vertical pipe VII (38) lower end be respectively positioned in same horizontal line,
In, the equal length of the vertical pipe II (33) and vertical pipe VII (38), the vertical pipe III (34) and vertical pipe IV (35)
The length of equal length, the equal length of the vertical pipe V (36) and vertical pipe VI (37), and the vertical pipe II (33) is maximum,
The length of vertical pipe III (34) is taken second place, and the length of vertical pipe V (36) is minimum.
9. a kind of connection structure of air-heater increasing enthalpy pipeline according to claim 8, it is characterised in that: more vertical pipes
It further include vertical pipe I (31), one end of the vertical pipe I (31) is connected by horizontal tube (32) vertical pipe II (33), described perpendicular
The other end of straight tube I (31) is connected with increasing enthalpy device (1), and above-mentioned electric expansion valve (2) is connected with vertical pipe VII (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910601297.XA CN110285573B (en) | 2019-07-05 | 2019-07-05 | Connecting structure of enthalpy-increasing pipeline for air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910601297.XA CN110285573B (en) | 2019-07-05 | 2019-07-05 | Connecting structure of enthalpy-increasing pipeline for air heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110285573A true CN110285573A (en) | 2019-09-27 |
| CN110285573B CN110285573B (en) | 2021-03-26 |
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ID=68020622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910601297.XA Active CN110285573B (en) | 2019-07-05 | 2019-07-05 | Connecting structure of enthalpy-increasing pipeline for air heater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202418373U (en) * | 2011-12-16 | 2012-09-05 | Tcl空调器(中山)有限公司 | Anti-vibration rubber and air conditioner |
| CN203743667U (en) * | 2014-01-27 | 2014-07-30 | 蔡德全 | Connecting structure of U-shaped pipe |
| CN105757828A (en) * | 2016-04-22 | 2016-07-13 | 海信（山东）空调有限公司 | Air conditioner outdoor unit piping, method for forming damping material on piping and air conditioner outdoor unit |
| CN107894036A (en) * | 2017-11-11 | 2018-04-10 | 夏晓宏 | A kind of shock-damping structure of air-conditioning and the air-conditioning for including it |
| CN208417752U (en) * | 2018-06-01 | 2019-01-22 | 珠海格力电器股份有限公司 | It is a kind of to solve the exceeded pipe fixed block of stress and the air-conditioning system with it |
-
2019
- 2019-07-05 CN CN201910601297.XA patent/CN110285573B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202418373U (en) * | 2011-12-16 | 2012-09-05 | Tcl空调器(中山)有限公司 | Anti-vibration rubber and air conditioner |
| CN203743667U (en) * | 2014-01-27 | 2014-07-30 | 蔡德全 | Connecting structure of U-shaped pipe |
| CN105757828A (en) * | 2016-04-22 | 2016-07-13 | 海信（山东）空调有限公司 | Air conditioner outdoor unit piping, method for forming damping material on piping and air conditioner outdoor unit |
| CN107894036A (en) * | 2017-11-11 | 2018-04-10 | 夏晓宏 | A kind of shock-damping structure of air-conditioning and the air-conditioning for including it |
| CN208417752U (en) * | 2018-06-01 | 2019-01-22 | 珠海格力电器股份有限公司 | It is a kind of to solve the exceeded pipe fixed block of stress and the air-conditioning system with it |
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| Publication number | Publication date |
|---|---|
| CN110285573B (en) | 2021-03-26 |
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