CN110057123A - Pulsating heat pipe drives the steam compression type circulatory system of heat of compressor defrosting - Google Patents
Pulsating heat pipe drives the steam compression type circulatory system of heat of compressor defrosting Download PDFInfo
- Publication number
- CN110057123A CN110057123A CN201910339020.4A CN201910339020A CN110057123A CN 110057123 A CN110057123 A CN 110057123A CN 201910339020 A CN201910339020 A CN 201910339020A CN 110057123 A CN110057123 A CN 110057123A
- Authority
- CN
- China
- Prior art keywords
- compressor
- heat pipe
- evaporator
- pulsating heat
- pulsating
- 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
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit type
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/06—Control arrangements therefor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Defrosting Systems (AREA)
Abstract
The embodiment of the invention provides a kind of steam compression type circulatory systems of pulsating heat pipe driving heat of compressor defrosting, it include: compressor 101, condenser 102, throttle valve 103 and evaporator 104, compressor 101 is connected with condenser 102, condenser 102 is connected with throttle valve 103, throttle valve 103 is connected with evaporator 104, and evaporator 104 is connected with compressor 101；The system also includes pulsating heat pipe 105, the evaporator section 105-3 of pulsating heat pipe is wrapped on 101 surface of compressor and 101 export pipeline of compressor；The condensation segment 105-1 of pulsating heat pipe 105 is wrapped on 104 surface of evaporator；The evaporator section of pulsating heat pipe 105 and condensation segment intermediate connection tube road are the adiabatic section 105-2 of pulsating heat pipe.The present invention defrosts to evaporator surface using heat of compressor; improve evaporator heat transfer efficiency; to improve the performance of the steam compression type circulatory system; and compressor temperature and condensation temperature can be effectively reduced during defrosting, reduce compressor wasted work and protection lubricating oil and guarantee that system can be with efficient operation during defrosting.
Description
Technical field
It defrosts the present invention relates to refrigeration and technical field of heat pumps more particularly to a kind of pulsating heat pipe driving heat of compressor
The steam compression type circulatory system.
Background technique
In refrigeration and air handling system, frosting problem is constantly subjected to the attention of researchers at home and abroad.Work as heat exchanger
Surface temperature be lower than water set point and air dew point when, in the region meeting that the cold surface of heat exchanger is contacted with water vapor in air
Generate frost.The formation of frost layer is related with surface temperature and relative humidity.Frost layer accumulation can damage heat exchanger and other members
Part, at the same as frost thickness increases, cause heat exchanger surface thermal resistance to increase, so that heat exchanger overall heat exchange amount declines, frost layer
It can be full of between fin and coil pipe, and then energy consumption is caused to increase, COP is reduced, refrigeration (heat pump) system performance decline.For example, electric
Refrigerator and refrigerator bring the vapor evaporated with food water in case into use for some time, due to water vapor in air
It can be in one layer of surface knot solidifying frost when encountering cryogenic vaporizer surface.Outside under air source heat pump type air-conditioning device winter condition is changed
Hot device (evaporator) constantly draws the heat of outdoor air when running, after heat exchanger surface temperature is reduced to 0 DEG C, evaporation
It device surface will frosting.Using the freezing-cooling storeroom of ammonia working medium, the frosting of air-cooler (evaporator) is also generally existing one
A problem.Therefore, it is the energy-efficient operation for ensuring evaporator and system, needs to take defrosting appropriate, defrosting measure.
Defrost mode is broadly divided into passive defrosting and actively defrosts.Passive defrosting is the form by improving heat exchanger surface
Structure, for example, shape and structure, coating material come delay frost formation.Active Defrost method mainly includes electric hydaulic defrosting,
Vibration defrosting, ultrasound wave defrosting and system Defrost mode.System Defrost method is the Defrost mode more generallyd use at present,
Mainly there are electric heated defrosting, reverse cycle defrosting and hot gas bypass defrosting.Electric heated defrosting is a kind of Defrost mode the simplest,
It is easy to install easy to operate, but more electricity can be consumed.The great advantage of reverse cycle defrosting be do not need original system add component, but
It is inevitable to need from indoor absorption heat, so that room temperature generates larger fluctuation.And the defrosting time of hot gas bypass defrosting
It is long.
In recent years, pulsating heat pipe causes many researchers due to the advantages that its structure is simple and the coefficient of heat transfer is big
Great interest.The concept of pulsating heat pipe in the 1990s, proposed first by Japanese scholars Akachi.Pulsating heat pipe be by
Capillary without multi-hole center is bent, and the interior vent plug and liquid plug for forming interval, gas in pipe are managed under the action of surface tension
Liquid interfacial phase change conduct heat the pressure difference to be formed be liquid plug pulsation driving force, mainly pass through evaporator section latent heat heat exchange and liquid plug arteries and veins
The sensible heat transfer of dynamic movement carries out the transmitting of heat.As it can be seen that pulsating heat pipe is a kind of to integrate sensible heat heat transfer and phase-change heat transfer
Gas-liquid two-phase streaming system.Pulsating heat pipe movement-less part, various structures, adaptability are good, and shape can be arbitrarily bent, Ke Yiyou
Multiple a heating section and a cooling section and heating and cooling position can arbitrarily be chosen, and in arbitrary inclination and can add
It works under hot mode.Therefore, many special operating conditions can be applicable in, such as space flight and aviation, military issue weapons, vehicle, computer
Equal electronic equipment dissipating heats, are the main paths of the following high heat flux density radiating element.Meanwhile pulsating heat pipe is recycled in waste heat, it is low
Temperature freezing, solar energy collecting, Space Facilities, etc. be also widely used.But at present in the steam compression type circulatory system
The research of middle pulsating heat pipe application is also rarely reported.
Summary of the invention
The embodiment provides a kind of steam compression type cyclic systems of pulsating heat pipe driving heat of compressor defrosting
System, to overcome the deficiencies of existing technologies.
To achieve the goals above, this invention takes following technical solutions.
The steam compression type circulatory system of a kind of pulsating heat pipe driving heat of compressor defrosting, comprising: compressor 101, cold
Condenser 102, throttle valve 103 and evaporator 104, the compressor 101 are connected with condenser 102, the condenser 102 and throttling
Valve 103 is connected, and the throttle valve 103 is connected with evaporator 104, and the evaporator 104 is connected with compressor 101；
The system also includes pulsating heat pipe 105, the evaporator section 105-3 of the pulsating heat pipe is wrapped in the compressor
On 101 export pipeline of 101 surfaces and compressor；The condensation segment 105-1 of the pulsating heat pipe 105 is wrapped in the evaporator 104
On surface；The evaporator section of the pulsating heat pipe 105 and condensation segment intermediate connection tube road are the adiabatic section 105-2 of pulsating heat pipe.
Preferably, the adiabatic section 105-2 of the pulsating heat pipe is equipped with starting valve.
As can be seen from the technical scheme provided by the above-mentioned embodiment of the present invention, it is recycled compared to conventional steam compression type
System Defrost mode, a kind of steam compression type circulatory system benefit of pulsating heat pipe driving heat of compressor defrosting proposed by the present invention
With pulsating heat pipe structure it is simple, can arbitrarily be bent, the feature that heat exchange efficiency is high makes compressor and compressor outlet pipeline refrigerant
Heat exchange heat with evaporator surface, achieve the purpose that utilize heat of compressor defrosting.The system be it is a kind of it is economical, have
Effect, feasible improvement plan can effectively improve defrosting effect, reduce energy consumption, and steam compression type refrigerating and heat pump is promoted to fill
The technology development set.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is that a kind of pulsating heat pipe that the embodiment of the present invention one provides drives the steam compression type of heat of compressor defrosting to follow
Loop system schematic diagram；
Appended drawing reference:
101 compressors；
102 condensers；
103 throttle valves；
104 evaporators；
105 pulsating heat pipes；105-1 condensation segment；The adiabatic section 105-2；105-3 evaporator section；105-4 valve
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Wording used herein
"and/or" includes one or more associated any cells for listing item and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
In order to facilitate understanding of embodiments of the present invention, it is done by taking several specific embodiments as an example below in conjunction with attached drawing further
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
The embodiment of the invention provides a kind of pulsating heat pipe driving heat of compressor defrosting the steam compression type circulatory system,
As shown in Figure 1, comprising: compressor 101, condenser 102, throttle valve 103, evaporator 104, pulsating heat pipe 105 and valve 105-
4, compressor 101 is connected with condenser 102, and condenser 102 is connected with throttle valve 103, and throttle valve 103 is connected with evaporator 104,
Evaporator 104 is connected with compressor 101；The evaporator section 105-3 of pulsating heat pipe is wrapped in 101 surface of compressor and compressor
On 101 export pipelines；The condensation segment 105-1 of pulsating heat pipe 105 is wrapped on 104 surface of evaporator；Pulsating heat pipe 105
Evaporator section and condensation segment intermediate connection tube road are the adiabatic section 105-2 of pulsating heat pipe；It is equipped in the adiabatic section 105-2 of pulsating heat pipe
The valve 105-4 for controlling pulsating heat pipe starting, pulse when opening two valve 105-4 heat pipe evaporator section 105-3 and condensation segment
105-1 connection, the pulsation heat when the saturation pressure of evaporator section in pulsating heat pipe is more than or equal to the resistance of motion of the liquid plug to condensation segment
Pipe 105 starts.
The embodiment of the invention provides a kind of pulsating heat pipe driving heat of compressor defrosting the steam compression type circulatory system,
System work process is as follows:
When circulatory system Defrost operation, opens pulsating heat pipe both ends valve and make pulsating heat pipe evaporator section 105-3 and condensation
Section 105-1 connection.Pulsating heat pipe evaporator section 105-3 absorbs compressor 101 and compressor 101 exports the heat of refrigerant, internal
Stronger gasification occurs, forming higher saturation pressure causes the working medium in evaporator section 105-3 to push condensation segment 105- to
1, condensation segment 105-1 is transferred heat to, this heat transmission achievees the purpose that defrosting to 104 surface of evaporator.It is condensed after heat exchange
The lower working medium of temperature comes back to evaporator section 105-3 heat absorption in section 105-1, forms circulation repeatedly.
In conclusion the embodiment of the present invention is using pulsating heat pipe structure, simple, strong applicability and shape can be arbitrarily bent
The characteristics of for freeze with heat pump assembly in driving heat of compressor defrosting.Specifically, by capillary one ends wound in compressor
Evaporator section on surface and compressor outlet pipeline as pulsating heat pipe, the other end are wrapped in the evaporator surface conduct of frosting
The condensation segment of pulsating heat pipe, the capillary pipeline connected therebetween are the adiabatic section of pulsating heat pipe regenerator.Pulsating heat pipe is by compressor
Heat transfer with press contracting machine outlet refrigerant achievees the effect that evaporator surface defrosting, compresses simultaneously to evaporator surface
The temperature of machine and outlet refrigerant reduces.Therefore, a kind of pulsating heat pipe driving heat of compressor provided in an embodiment of the present invention removes
Simple, low cost the pulsating heat pipe driving heat of compressor defrosting by using structure of the steam compression type circulatory system of frost.It removes
White process absorbs heat from compressor, reduces compressor temperature, it is possible to reduce compressor wasted work and protection lubricating oil；It reduces simultaneously
Compressor exit temperature, so that condensation temperature reduces, the performance of system when improving Defrost operation.Due to the good biography of pulsating heat pipe
Quick, effective, energy-efficient defrosting function can be achieved in hot property, present system circulation.This is to steam compression type refrigerating and heat pump
The development of device has positive impetus, and can bring preferable Social benefit and economic benefit.
Those of ordinary skill in the art will appreciate that: attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Process is not necessarily implemented necessary to the present invention.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (2)
1. a kind of steam compression type circulatory system of pulsating heat pipe driving heat of compressor defrosting characterized by comprising compression
Machine (101), condenser (102), throttle valve (103) and evaporator (104), the compressor (101) and condenser (102) phase
Even, the condenser (102) is connected with throttle valve (103), and the throttle valve (103) is connected with evaporator (104), the evaporation
Device (104) is connected with compressor (101)；
The system also includes pulsating heat pipe (105), the evaporator section (105-3) of the pulsating heat pipe is wrapped in the compressor
(101) on surface and compressor (101) export pipeline；The condensation segment (105-1) of the pulsating heat pipe (105) is wrapped in the steaming
It sends out on device (104) surface；The evaporator section of the pulsating heat pipe (105) and condensation segment intermediate connection tube road are the insulation of pulsating heat pipe
Section (105-2).
2. system according to claim 1, which is characterized in that the adiabatic section (105-2) of the pulsating heat pipe is equipped with and opens
Movable valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339020.4A CN110057123A (en) | 2019-04-25 | 2019-04-25 | Pulsating heat pipe drives the steam compression type circulatory system of heat of compressor defrosting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339020.4A CN110057123A (en) | 2019-04-25 | 2019-04-25 | Pulsating heat pipe drives the steam compression type circulatory system of heat of compressor defrosting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110057123A true CN110057123A (en) | 2019-07-26 |
Family
ID=67320797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910339020.4A Pending CN110057123A (en) | 2019-04-25 | 2019-04-25 | Pulsating heat pipe drives the steam compression type circulatory system of heat of compressor defrosting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110057123A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028653A (en) * | 2018-08-21 | 2018-12-18 | 夏汉林 | Wind-cooling type heat pump unit |
| CN112781180A (en) * | 2021-02-09 | 2021-05-11 | 珠海格力电器股份有限公司 | Heat exchange device, air conditioner and control method of heat exchange device |
| CN113188267A (en) * | 2021-04-28 | 2021-07-30 | 华中科技大学 | Scroll type refrigeration compressor and refrigeration system thereof |
| CN114383188A (en) * | 2022-03-24 | 2022-04-22 | 煤炭工业太原设计研究院集团有限公司 | Solar photo-thermal loop heat pipe air-conditioning heating system and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480698A (en) * | 2002-08-06 | 2004-03-10 | ���ǵ�����ʽ���� | Defroster and refrigerator using same |
| CN101699196A (en) * | 2009-10-28 | 2010-04-28 | 华南理工大学 | Air-cooling heat pump using excess heat of compressor for frost prevention |
| JP2015025563A (en) * | 2013-07-24 | 2015-02-05 | パナソニック株式会社 | Air conditioner |
| CN107036333A (en) * | 2017-04-28 | 2017-08-11 | 东南大学 | Lithium bromide refrigerator generator |
| CN206609177U (en) * | 2017-03-31 | 2017-11-03 | 大连大学 | Refrigerator recuperation of heat electricity generation system and refrigerator refrigeration system |
-
2019
- 2019-04-25 CN CN201910339020.4A patent/CN110057123A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480698A (en) * | 2002-08-06 | 2004-03-10 | ���ǵ�����ʽ���� | Defroster and refrigerator using same |
| CN101699196A (en) * | 2009-10-28 | 2010-04-28 | 华南理工大学 | Air-cooling heat pump using excess heat of compressor for frost prevention |
| JP2015025563A (en) * | 2013-07-24 | 2015-02-05 | パナソニック株式会社 | Air conditioner |
| CN206609177U (en) * | 2017-03-31 | 2017-11-03 | 大连大学 | Refrigerator recuperation of heat electricity generation system and refrigerator refrigeration system |
| CN107036333A (en) * | 2017-04-28 | 2017-08-11 | 东南大学 | Lithium bromide refrigerator generator |
Non-Patent Citations (1)
| Title |
|---|
| 史维秀等: "脉动热管在暖通空调领域应用的研究进展", 《煤气与热力》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028653A (en) * | 2018-08-21 | 2018-12-18 | 夏汉林 | Wind-cooling type heat pump unit |
| CN112781180A (en) * | 2021-02-09 | 2021-05-11 | 珠海格力电器股份有限公司 | Heat exchange device, air conditioner and control method of heat exchange device |
| CN112781180B (en) * | 2021-02-09 | 2021-11-16 | 珠海格力电器股份有限公司 | Heat exchange device, air conditioner and control method of heat exchange device |
| CN113188267A (en) * | 2021-04-28 | 2021-07-30 | 华中科技大学 | Scroll type refrigeration compressor and refrigeration system thereof |
| CN114383188A (en) * | 2022-03-24 | 2022-04-22 | 煤炭工业太原设计研究院集团有限公司 | Solar photo-thermal loop heat pipe air-conditioning heating system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110057123A (en) | Pulsating heat pipe drives the steam compression type circulatory system of heat of compressor defrosting | |
| CN108759138B (en) | Operation method and system of secondary throttling middle incomplete cooling refrigerating system | |
| CN200955881Y (en) | Continuous defrosting and heating air source heat pump | |
| US20070180853A1 (en) | Refrigerator | |
| CN202853236U (en) | Air cooling system for automatic defrosting by condenser heat | |
| CN108458511B (en) | Direct contact condensation refrigerating system with hot gas defrosting function | |
| CN103808102A (en) | Heat-driven defrosting device using natural circulation and defrosting method using same | |
| CN101694329A (en) | Dual-working condition heat pump cold hot water machine unit of parallel evaporator | |
| CN104729133A (en) | Double gas-liquid separator efficiency increasing and refrigerating circulating system for two-temperature direct-cooling refrigerator | |
| CN108759139B (en) | Primary throttling intermediate incomplete cooling refrigeration system with intermediate temperature evaporator | |
| CN108709333B (en) | Operation method and system of secondary throttling middle complete cooling refrigerating system | |
| CN209197195U (en) | A kind of small frozen refrigeration unit with twin-stage supercooling and gas pulses defrosting function | |
| CN201463433U (en) | Hot air defroster for multi-set parallel evaporator refrigeration system | |
| CN215412599U (en) | Refrigerating system | |
| CN101368777A (en) | Liquid coolant defrosting and refrigeration system | |
| CN110030773A (en) | A kind of one-stage steam compressed formula circulatory system of pulsating heat pipe backheat | |
| CN103245150B (en) | Air source heat pump defrosting device | |
| CN106369884A (en) | Evaporator, air cooler, and refrigeration or heat pump device and system | |
| CN101639310A (en) | Hot-gas bypass and surface cooler supercooling defrosting device | |
| CN216204319U (en) | Heat pump water heater | |
| CN211261344U (en) | Continuous heating defrosting-free air conditioner | |
| CN115164440A (en) | Refrigerating system and refrigerating equipment | |
| CN211120160U (en) | Optimized hot gas defrosting system | |
| CN210070284U (en) | Heat pump unit comprising a plurality of cold and heat source heat exchangers | |
| CN207515298U (en) | A kind of refrigeration system |
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 |
Application publication date: 20190726 |
|
| RJ01 | Rejection of invention patent application after publication |