CN107503918A - A kind of parallel connection compressor and air-conditioning system - Google Patents
A kind of parallel connection compressor and air-conditioning system Download PDFInfo
- Publication number
- CN107503918A CN107503918A CN201710848348.XA CN201710848348A CN107503918A CN 107503918 A CN107503918 A CN 107503918A CN 201710848348 A CN201710848348 A CN 201710848348A CN 107503918 A CN107503918 A CN 107503918A
- Authority
- CN
- China
- Prior art keywords
- compressor
- pipe
- return
- parallel connection
- return duct
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
-
- 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
- F25B31/00—Compressor arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressor (AREA)
Abstract
The invention discloses a kind of parallel connection compressor, including the first compressor, the second compressor, return tee joint pipe and return header, the refluxing opening of first compressor is communicated with the first return duct, the refluxing opening of second compressor is communicated with the second return duct, return header, the first return duct and the second return duct are connected by return tee joint pipe, and the refluxing opening of the refluxing opening of the first compressor and the second compressor is above the diffluence pass setting of return tee joint pipe.By the height reduction of the diffluence pass of threeway return duct, and refluxing opening than the first compressor and the refluxing opening of the second compressor are low, slight liquid reflux medium can be avoided directly to be flowed to by diffluence pass in the refluxing opening of compressor, then the refluxing opening stream for being effectively prevented from compressor has liquid, is then effectively prevented from the damage of compressor.To sum up, the parallel connection compressor can efficiently solve the flimsy problem of compressor displacement.The invention also discloses a kind of air-conditioning system for including above-mentioned parallel connection compressor.
Description
Technical field
The present invention relates to air-conditioning technical field, more specifically to a kind of parallel connection compressor, further relates to a kind of including upper
State the air-conditioning system of parallel connection compressor.
Background technology
Module water dispenser system just enters Chinese market from the eighties in last century, by its expansion is convenient, control is free, efficiently
Save, be easily installed the advantages that safeguarding, occupy critical role in Market of Central Air-conditioning quickly.
Conventional module water dispenser at present, is essentially all that each system uses independent compressor, correspondingly each system
System and corresponding independent heat exchanger, when this conventional module water dispenser runs fractional load, the utilization rate of heat exchanger is not high,
Efficiency is difficult to very high.For the new Energy Efficiency Standard of reply module water dispenser, many module water dispenser producer exploitations are using compression in parallel
The module water dispenser of machine system, the efficiency of unit is improved with this.
Using the module water dispenser of parallel compressor system, because using parallel connection compressor, its refrigeration system is increasingly complex, its
Pipeline connection is also relative complex, easily enters liquid reflux medium from refluxing opening in two compressors of parallel connection compressor at present,
And then it is easy to damage.
In summary, the flimsy problem of compressor displacement of parallel connection compressor how is efficiently solved, is current this area
Technical staff's urgent problem.
The content of the invention
In view of this, first purpose of the invention is to provide a kind of parallel connection compressor, and the parallel connection compressor can have
Effect ground solves the flimsy problem of compressor displacement of parallel connection compressor, and second object of the present invention is to provide a kind of including above-mentioned
A kind of air-conditioning system of parallel connection compressor.
In order to reach above-mentioned first purpose, the present invention provides following technical scheme：
A kind of parallel connection compressor, including the first compressor, the second compressor, return tee joint pipe and return header, described
The refluxing opening of one compressor is communicated with the first return duct, and the refluxing opening of second compressor is communicated with the second return duct, described
Return header, first return duct and second return duct are connected by the return tee joint pipe, first compressor
Refluxing opening and second compressor refluxing opening be above return tee joint pipe diffluence pass set.
Preferably, first return duct and first return duct have inflection point and the correspondence position of identical quantity
Inflection point bending degree is identical.
Preferably, the return tee joint pipe is T-shaped three-way pipe, on the return tee joint pipe two relative mouths of pipe respectively with
First return duct connects with second return duct.
Preferably, the drainage port of first compressor is communicated with the first drain tube, the drainage port of second compressor
The second drain tube, in addition to drainage house steward are communicated with, first drain tube, second drain tube and the drainage house steward are led to
The connection of drainage three-way pipe is crossed, first drain tube and second drain tube are lobster back.
Preferably, the drainage three-way pipe is Y-shaped three-way pipe, two mutually close mouths of pipe difference on the drainage three-way pipe
Connected with first drain tube and second drain tube.
Preferably, first drain tube and second drain tube have inflection point and the correspondence position of identical quantity
Inflection point bending degree is identical.
Preferably, the oily balance port of first compressor is communicated with the first balance pipe, and the oil of second compressor is put down
Heng Kou is communicated with the second balance pipe, in addition to the uniform balance pipe connected with the return header, first balance pipe, described
Second balance pipe is connected with the uniform balance pipe by balancing three-way pipe.
Preferably, first balance pipe and second balance pipe include U-shaped section.
Preferably, the uniform balance pipe is for copper pipe and including U-shaped section.
A kind of parallel connection compressor provided by the invention, the specific parallel connection compressor include the first compressor, the second compression
Machine, return tee joint pipe, the first return duct, the second return duct and return header.The refluxing opening of first compressor and the first backflow
One end connection of pipe, and the refluxing opening of the second compressor connects with one end of the second return duct.And wherein one end of return header,
The other end of first return duct, the other end of the second return duct are connected by return tee joint pipe.The refluxing opening of first compressor with
And first compressor refluxing opening be above return tee joint pipe diffluence pass set so that follow gas when having in return header
During liquid reflux medium, the liquid reflux medium can be gathered in the diffluence pass.
According to above-mentioned technical scheme, it is recognised that in the application parallel connection compressor, now the first compressor and second
Compressor works simultaneously, and when system operation low-temperature heating or cryogenic refrigeration, the return-air of system is that reflux medium temperature is relatively low, is entered
And when being likely to occur slight liquid reflux medium, reflux medium can be gathered at diffluence pass.In the compressor arranged side by side, by threeway
The height reduction of the diffluence pass of return duct, and refluxing opening than the first compressor and the refluxing opening of the second compressor are low, can be with
Avoid slight liquid reflux medium from directly being flowed to by diffluence pass in the refluxing opening of compressor, be then effectively prevented from compressor
Refluxing opening stream have liquid, be then effectively prevented from the damage of compressor.In summary, the parallel connection compressor can be solved effectively
The certainly flimsy problem of compressor displacement.
In order to reach above-mentioned second purpose, present invention also offers a kind of air-conditioning system, the air-conditioning system includes above-mentioned
Any parallel connection compressor.Because above-mentioned parallel connection compressor has above-mentioned technique effect, there is the air-conditioning of the parallel connection compressor
System should also have corresponding technique effect.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the mounting structure schematic diagram of return duct provided in an embodiment of the present invention；
Fig. 2 is the mounting structure schematic diagram of drain tube provided in an embodiment of the present invention；
Fig. 3 is the mounting structure schematic diagram of balance pipe provided in an embodiment of the present invention.
Marked in accompanying drawing as follows：
First compressor 1, the second compressor 2, return tee joint pipe 3, return header 4, the first return duct 5, the second return duct
6th, drainage three-way pipe 7, drainage house steward 8, the first drain tube 9, the second drain tube 10, balance three-way pipe 11, uniform balance pipe 12, the
One balance pipe 13, the second balance pipe 14.
Embodiment
The embodiment of the invention discloses a kind of parallel connection compressor, to efficiently solve the compressor displacement rapid wear of parallel connection compressor
Bad the problem of.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1-Fig. 3 is referred to, Fig. 1 is the mounting structure schematic diagram of return duct provided in an embodiment of the present invention；Fig. 2 is this hair
The mounting structure schematic diagram for the drain tube that bright embodiment provides；Fig. 3 is the mounting structure of balance pipe provided in an embodiment of the present invention
Schematic diagram.
In a kind of specific embodiment, a kind of parallel connection compressor is present embodiments provided, the specific parallel connection compressor bag
Include the first compressor 1, the second compressor 2, return tee joint pipe 3, the first return duct 5, the second return duct 6 and return header 4.
Wherein the first compressor 1 and the second compressor 2 are in parallel, i.e., connect between refluxing opening, connected between drainage port.Typically
First compressor 1 and the compression horsepower of the second compressor 2 are equal in magnitude.The refluxing opening of first compressor 1 and the first return duct 5
One end connects, and the refluxing opening of the second compressor 2 connects with one end of the second return duct 6.
And wherein one end of return header 4, the other end of the first return duct 5, the other end of the second return duct 6 pass through backflow
Three-way pipe 3 connects, and the lower end mouth of pipe of usually return header 4 connects with return tee joint pipe 3, will be returned by return tee joint pipe 3
The reflux medium of stream house steward 4 is guided into the first return duct 5 and the second return duct 6 respectively, and passes through the He of the first compressor 1 respectively
Second compressor 2 is compressed to reflux medium.Wherein return tee joint pipe 3 can be breeches pipe, it is contemplated that the pipe of return duct
Footpath is bigger, and preferred return tee joint pipe 3 uses T-shaped three-way pipe herein, and makes two mouths of pipe difference relative on return tee joint pipe 3
Connected with first return duct 5 and second return duct 6.
Three-way pipe typically has three mouths of pipe, and three mouths of pipe draw a circulation passage respectively inwards, and internally intersect,
Form a Where Three Faults Meet.And in return tee joint pipe 3, Where Three Faults Meet is diffluence pass, and in three mouths of pipe, one of mouth of pipe is total
Flow tube mouth, i.e., connected with return header 4, two other for shunting the mouth of pipe, i.e., respectively with the first return duct 5 and the second return duct 6
Connection, the reflux medium flowed into from total flow tube mouth disperse in diffluence pass, with respectively from shunting mouth of pipe outflow.
The diffluence pass that the refluxing opening of the refluxing opening of first compressor 1 and the first compressor 1 is above return tee joint pipe 3 is set
Put so that when there is the liquid reflux medium for following gas in return header 4, the liquid reflux medium can be gathered in the shunting
Mouthful, without being entered by the first return duct 5 and the second return duct 6 in compressor, it will not then damage compressor.Need
It is bright, liquid reflux medium is collected for convenience, and collector groove can also be set at diffluence pass.
In the present embodiment, in the application parallel connection compressor, now the first compressor 1 and the second compressor 2 work simultaneously
Make, when system operation low-temperature heating or cryogenic refrigeration, the return-air of system is that reflux medium temperature is relatively low, and then is likely to occur light
During micro- liquid reflux medium, reflux medium can be gathered at diffluence pass.In the compressor arranged side by side, by the shunting of threeway return duct
Mouthful height reduction, and refluxing opening than the first compressor 1 and the refluxing opening of the second compressor 2 are low, can avoid slight
Liquid reflux medium is directly flowed in the refluxing opening of compressor by diffluence pass, is then effectively prevented from the refluxing opening stream of compressor
There is liquid, be then effectively prevented from the damage of compressor.In summary, the parallel connection compressor can efficiently solve compressor displacement
Flimsy problem.
Wherein the first return duct 5 and the second return duct 6 can use straight tube, it is contemplated that straight tube effectiveness in vibration suppression is bad,
Preferably the first return duct 5 and the second return duct 6 use lobster back, each inflection point rounding off herein.Preferably first time herein
The return duct 6 of flow tube 5 and second has the inflection point of identical quantity, and the inflection point bending degree of correspondence position is identical, i.e., and first
The return duct 6 of return duct 5 and second, from refluxing opening to diffluence pass, both first inflection point bending degrees are identical, and both second
The bending degree of individual inflection point is identical, by that analogy.Wherein looper degree, refers to bending angle.
Because the first compressor 1 and the second compressor 2 are in parallel, the drainage port of the first compressor 1 and the second compressor 2
Drainage port between connect.Specifically, the drainage port of the first compressor 1 is communicated with the first drain tube 9, the second compressor 2
Drainage port is communicated with the second drain tube 10.And the first drain tube 9, the second drain tube 10 and drainage house steward 8 is set to pass through drainage threeway
Pipe 7 connects, wherein the first drain tube 9 and the second drain tube 10 are lobster back.By making the first drain tube 9 and the second drain tube
10 are all provided with being set to lobster back, can efficiently reduce the vibration of pipeline, avoid the fracture of drain tube.In order that two drainage pipes
There is identical drainage effect, herein preferably, the first drain tube 9 and the second drain tube 10 also inflection point with identical quantity and correspondingly
The inflection point bending degree of position is identical.It should be noted that in order to which water conservancy diversion effect is good, each inflection point preferably passes through half corner bevelling
Tube transitions.Wherein drainage three-way pipe 7 can use T-shaped three-way pipe, but preferred drainage three-way pipe 7 uses Y type drain tubes, tool herein
Body, two mutually close mouths of pipe connect with the first drain tube 9 and the second drain tube 10 respectively on drainage three-way pipe 7, to play
More preferable effect of confluxing.
For parallel connection compressor, in order to ensure that internal oil balances, balance pipe is typically all set.Specifically, such as the first pressure
The oily balance port of contracting machine 1 is communicated with the first balance pipe 13, and the oily balance port of the second compressor 2 is communicated with the second balance pipe 14, its
In the first balance pipe 13 connected with the second balance pipe 14.
Unit in the process of running, two compressors in parallel, due to the difference (suction of i.e. one compressor of pressure of inspiration(Pi)
Power is more than the suction of another compressor), the lubricating oil that can cause to compress motor spindle is from the compressor of bargain-hunting power to high suction
Compressor flows, and causes and then can cause the bottom oil starvation of bargain-hunting power compressor, long-play, the bargain-hunting power compressor operating longevity
Life is reduced.In order to preferably ensure that oil level balances, the uniform balance pipe 12 connected with return header 4 is preferably additionally provided with herein,
And first balance pipe 13, the second balance pipe 14 are connected with uniform balance pipe 12 by balancing three-way pipe 11.Unit is in running
In so that two compressor suction in parallel are all lower than the pressure of muffler, when causing two compressors to run at the same time, return
The gaseous coolant of tracheae 4 is flowed to the oily balance port of two compressors by No. 12 pipes respectively, so as to prevent compressor oil from low suction
Force compresses machine flows to high suction compressor, so as to avoid two compressors while pressure of inspiration(Pi) low compressor and freeze when running
Oil stream is to the high compressor of pressure of inspiration(Pi), so that compressor is persistently run.
In order to ensure the effect that circulates, wherein uniform balance pipe 12 preferably uses copper pipe, typically using a diameter of 9.52 millimeters
Copper pipe.Copper pipe toughness is stronger, and oil reserve is small, ensures that big gauging in compressor cavity circulation, can reduce due to compressor
Vibrate it is inconsistent caused by oil balance tube stress.
Further, preferably the first balance pipe 13 and the second balance pipe 14 include U-shaped section herein., can be with by U-shaped section
Effectively balance the oil pocket pressure of the first compressor 1 and the oil pocket pressure of the second compressor 2.Because two compressor starts are present
Time difference, general difference 3 seconds are all, when helping to slow down firm start by above-mentioned U-shaped design, the oil of the compressor being not keyed up to
The compressor just started shooting largely migrates.Accordingly, uniform balance pipe 12 can also be made to include U-shaped section.Wherein pipe fitting includes U-shaped section
Refer to that at least one section of the pipe fitting is U-shaped.
Based on the parallel connection compressor provided in above-described embodiment, present invention also offers a kind of air-conditioning system, the air-conditioning system
System includes any one parallel connection compressor in above-described embodiment.The pressure in parallel in above-described embodiment is employed due to the air-conditioning system
Contracting machine, so the beneficial effect of the air-conditioning system refer to above-described embodiment.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of parallel connection compressor, including the first compressor, the second compressor, return tee joint pipe and return header, described first
The refluxing opening of compressor is communicated with the first return duct, and the refluxing opening of second compressor is communicated with the second return duct, described time
Stream house steward, first return duct are connected with second return duct by the return tee joint pipe, it is characterised in that described the
The diffluence pass that the refluxing opening of the refluxing opening of one compressor and second compressor is above return tee joint pipe is set.
2. parallel connection compressor according to claim 1, it is characterised in that first return duct and first return duct
The inflection point bending degree of inflection point and correspondence position with identical quantity is identical.
3. parallel connection compressor according to claim 2, it is characterised in that the return tee joint pipe is T-shaped three-way pipe, described
Two relative mouths of pipe connect with first return duct and second return duct respectively on return tee joint pipe.
4. parallel connection compressor according to claim 1, it is characterised in that the drainage port of first compressor is communicated with
One drain tube, the drainage port of second compressor are communicated with the second drain tube, in addition to drainage house steward, first drainage
Pipe, second drain tube are connected with the drainage house steward by drainage three-way pipe, first drain tube and the second row
Flow tube is lobster back.
5. parallel connection compressor according to claim 4, it is characterised in that the drainage three-way pipe is Y-shaped three-way pipe, described
Two mutually close mouths of pipe connect with first drain tube and second drain tube respectively on drainage three-way pipe.
6. parallel connection compressor according to claim 5, it is characterised in that first drain tube and second drain tube
The inflection point bending degree of inflection point and correspondence position with identical quantity is identical.
7. according to the parallel connection compressor described in claim any one of 1-6, it is characterised in that the oil balance of first compressor
Mouth is communicated with the first balance pipe, and the oily balance port of second compressor is communicated with the second balance pipe, in addition to the backflow
The uniform balance pipe of house steward's connection, first balance pipe, second balance pipe and the uniform balance pipe pass through balance three
Siphunculus connects.
8. parallel connection compressor according to claim 7, it is characterised in that first balance pipe and second balance pipe
Include U-shaped section.
9. parallel connection compressor according to claim 8, it is characterised in that the uniform balance pipe is for copper pipe and including U-shaped
Section.
10. a kind of air-conditioning system, it is characterised in that also include the parallel connection compressor as described in claim any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848348.XA CN107503918A (en) | 2017-09-19 | 2017-09-19 | A kind of parallel connection compressor and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848348.XA CN107503918A (en) | 2017-09-19 | 2017-09-19 | A kind of parallel connection compressor and air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107503918A true CN107503918A (en) | 2017-12-22 |
Family
ID=60697910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710848348.XA Pending CN107503918A (en) | 2017-09-19 | 2017-09-19 | A kind of parallel connection compressor and air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107503918A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654760A (en) * | 2018-12-14 | 2019-04-19 | 广州斯派克环境仪器有限公司 | It is a kind of for detecting the double-compressor seamless switch-over system of food and medicine stability |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2782983Y (en) * | 2004-12-04 | 2006-05-24 | 珠海格力电器股份有限公司 | Compressor with oil balance machanism |
| WO2008081093A2 (en) * | 2006-12-04 | 2008-07-10 | Danfoss Commercial Compressors | Device for suction gas distribution in a parallel compressor assembly, and parallel compressor assembly |
| CN201196145Y (en) * | 2008-01-15 | 2009-02-18 | 珠海格力电器股份有限公司 | Oil equalization system for compressor with multi-external machine in parallel connection |
| CN203161535U (en) * | 2013-03-21 | 2013-08-28 | 艾默生环境优化技术(苏州)有限公司 | Compressor system |
| CN103851832A (en) * | 2014-04-02 | 2014-06-11 | 深圳麦克维尔空调有限公司 | Parallel-connection compressor oil balancing device |
| CN106642817A (en) * | 2016-10-20 | 2017-05-10 | 兰州理工大学 | Oil returning system for multi-compressor parallel-connection unit |
-
2017
- 2017-09-19 CN CN201710848348.XA patent/CN107503918A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2782983Y (en) * | 2004-12-04 | 2006-05-24 | 珠海格力电器股份有限公司 | Compressor with oil balance machanism |
| WO2008081093A2 (en) * | 2006-12-04 | 2008-07-10 | Danfoss Commercial Compressors | Device for suction gas distribution in a parallel compressor assembly, and parallel compressor assembly |
| CN201196145Y (en) * | 2008-01-15 | 2009-02-18 | 珠海格力电器股份有限公司 | Oil equalization system for compressor with multi-external machine in parallel connection |
| CN203161535U (en) * | 2013-03-21 | 2013-08-28 | 艾默生环境优化技术(苏州)有限公司 | Compressor system |
| CN103851832A (en) * | 2014-04-02 | 2014-06-11 | 深圳麦克维尔空调有限公司 | Parallel-connection compressor oil balancing device |
| CN106642817A (en) * | 2016-10-20 | 2017-05-10 | 兰州理工大学 | Oil returning system for multi-compressor parallel-connection unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654760A (en) * | 2018-12-14 | 2019-04-19 | 广州斯派克环境仪器有限公司 | It is a kind of for detecting the double-compressor seamless switch-over system of food and medicine stability |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201265977Y (en) | Air source heat pump units with air compensating pipeline | |
| CN111811112A (en) | Intelligent oil return multi-split air conditioner system | |
| CN109140844A (en) | The air conditioner and operation method for preventing throttling set oil stifled are set using vertical U shape dress | |
| CN107062934A (en) | A kind of energy-conservation vacuumizes cooling system and method | |
| CN203771771U (en) | Air-conditioning unit and air heat exchanger | |
| CN102678572B (en) | Air conditioner and air conditioner low back pressure type compressor for pre-cooling motor | |
| CN201666694U (en) | Heat pump device with heat regenerating and circulating function | |
| CN107503918A (en) | A kind of parallel connection compressor and air-conditioning system | |
| CN104990307B (en) | Air conditioner, compression module and compression module group | |
| CN201876033U (en) | Heat-regeneration refrigerating system with check bridge | |
| CN107575977A (en) | A kind of dispersive-function module air conditioner system with condensation heat recovery device | |
| CN104964476B (en) | Air-Cooled Heat Pump Unit | |
| CN207831734U (en) | It is a kind of can be in the low temperature frequency conversion increasing enthalpy Air-Cooled Heat Pump Unit of -30 DEG C of environment | |
| CN203615485U (en) | Split air conditioning system | |
| CN101852509A (en) | Flooded water-source heat pump unit with refrigerant side cold and heat reversion | |
| CN209672634U (en) | Tube-sheet type heat pump system | |
| CN201852387U (en) | Manifold hot freon defrosting and refrigerating system | |
| CN209147489U (en) | New type low temperature heat pump system | |
| CN105526735B (en) | A kind of efficient big temperature rise two-stage throttling two stages of compression heat pump water-heating machine | |
| CN103438626B (en) | A kind of high temperature heat pump reservoir and adopt the high temperature thermal pump water heater of this reservoir | |
| CN208805078U (en) | A kind of double-tube heat exchanger with refrigerant compensator | |
| CN207894064U (en) | A kind of low-temperature air source heat pump system preventing secondary frosting | |
| CN207922640U (en) | A kind of air conditioner oil return structure and air-conditioning | |
| CN206771824U (en) | Cast injector and refrigeration system | |
| CN208475604U (en) | A kind of annular microchannel dehumidifying heat pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171222 |