CN101270936B - Refrigerating cycle system adopting heat pump to melt frost - Google Patents
Refrigerating cycle system adopting heat pump to melt frost Download PDFInfo
- Publication number
- CN101270936B CN101270936B CN2008100529452A CN200810052945A CN101270936B CN 101270936 B CN101270936 B CN 101270936B CN 2008100529452 A CN2008100529452 A CN 2008100529452A CN 200810052945 A CN200810052945 A CN 200810052945A CN 101270936 B CN101270936 B CN 101270936B
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- check valve
- outlet
- refrigerant
- latent heat
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Defrosting Systems (AREA)
Abstract
The invention discloses a heat pump defrosting refrigeration circulation system and aims at providing a circulation system capable of storing energy through cooling circulation and providing medium of higher temperature in the process of heat pump defrosting. The refrigerant outlet of the compressor is connected with the refrigerant outlet of a sensible heat exchanger through a four-way reversing valve, wherein the refrigerant outlet of the sensible heat exchanger is connected respectively with the inlet of a first check valve and the inlet of a second check valve; the outlet of the first check valve is connected with the refrigerant inlet of a first latent heat exchanger; the refrigerant outlet of the first latent heat exchanger is respectively connected with the inlet of a throttling set and the outlet of a third check valve; the outlet of the throttling set is respectively connected with the inlet of the second check valve and the inlet of a fourth check valve; the inlet of the third check valve and the outlet of the fourth check valve are respectively connected with the refrigerant inlet of the second latent heat exchanger; the refrigerant outlet of the second latent heat exchanger is connected with refrigerant inlet of the compressor through the four-way reversing valve. The defrosting of the system of the invention takes little time.
Description
Technical field
The present invention relates to a kind of cooling cycle system, in particular, relate to a kind of cooling cycle system that adopts heat pump to melt frost.
Background technology
For low-temperature cold store or low-temp. refrigerator, evaporimeter is easy to frosting when kind of refrigeration cycle, and the defrosting mode that often adopts behind the evaporimeter frosting has the auxiliary defrosting of electric heating and two kinds of forms of heat pump to melt frost.Heat pump to melt frost has advantages such as power consumption is low, and defrosting speed is fast, and is safe and reliable.During heat pump to melt frost, system utilizes four-way change-over valve that the function of original evaporimeter and condenser is changed mutually, realizes heat pump cycle.Evaporimeter during heat pump cycle (condenser during kind of refrigeration cycle) inner refrigerant absorbs heat from surrounding medium (air), promote refrigerant pressure by compressor and arrive in the condenser (evaporimeter when being kind of refrigeration cycle), the frost that utilizes cold-producing medium condensation heat release under high pressure to melt on the evaporimeter to be tied.During heat pump to melt frost, the evaporating temperature of heat pump directly has influence on the efficient of defrosting, and evaporating temperature is high more, and the heating efficiency of heat pump is high more, and the defrosting time is short more.So the temperature of surrounding medium directly has influence on the efficient of heat pump cycle, in the time of especially in the winter time, the caloric requirement of heat pump to melt frost is extracted from lower surrounding medium, because this moment, air themperature was lower, the also corresponding reduction of thermo-compression evaporation temperature, systematic energy efficiency ratio is less relatively, and defrosting is longer running time.
Summary of the invention
The present invention is in order to overcome weak point of the prior art, to provide a kind of and can utilize the kind of refrigeration cycle accumulation of energy, and higher surrounding medium temperature is provided when realizing heat pump to melt frost, improves the cooling cycle system of heat pump to melt frost efficient.
The present invention is achieved through the following technical solutions:
A kind of cooling cycle system that adopts heat pump to melt frost, it is characterized in that, comprise compressor, four-way change-over valve, sensible heat exchanger, first latent heat exchanger, second latent heat exchanger and throttling arrangement, the refrigerant outlet of described compressor is connected with first interface of four-way change-over valve, second interface of four-way change-over valve is connected with the refrigerant inlet of sensible heat exchanger, the refrigerant outlet of sensible heat exchanger is connected with the import of first check valve and the outlet of second check valve respectively, the outlet of first check valve is connected with the refrigerant inlet of first latent heat exchanger, the refrigerant outlet of first latent heat exchanger is connected with the import of throttling arrangement and the outlet of the 3rd check valve respectively, the outlet of throttling arrangement is connected with the import of second check valve and the import of the 4th check valve respectively, the outlet of the import of the 3rd check valve and the 4th check valve is connected with the refrigerant inlet of second latent heat exchanger respectively, the refrigerant outlet of second latent heat exchanger is connected with the 3rd interface of four-way change-over valve, and the 4th interface of four-way change-over valve is connected with the refrigerant inlet of compressor.
Described sensible heat exchanger is by container and place heat exchanger and heat storage medium in the container to form.Described heat exchanger is coil pipe or plate type heat exchanger.
Described throttling arrangement is any in capillary, choke valve, the orifice plate.
Described second latent heat exchanger is a surface exchanger.
The present invention has following technique effect:
Cooling cycle system of the present invention is when kind of refrigeration cycle, and the heat storage medium in the sensible heat exchanger is heated, and thermal energy storage is in heat storage medium.And when realizing heat pump to melt frost, cold-producing medium absorbs the heat energy that is stored in the sensible heat exchanger heat storage medium, has improved defrosting efficient, has shortened the defrosting time.Simultaneously because the adding of sensible heat exchanger, the degree of supercooling of cold-producing medium when having improved kind of refrigeration cycle, thus improved the refrigeration system operational efficiency.In addition, first latent heat exchanger (condenser in the cooling cycle system) during owing to heat pump to melt frost in the system does not participate in circulation, thus cyclic transformation, can set up system pressure difference very soon from heat pump to refrigeration, thus shortened the time of system's conversion.
Description of drawings
Fig. 1 adopts the cooling cycle system schematic diagram of heat pump to melt frost for the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments to the detailed description of the invention.
Fig. 1 adopts the cooling cycle system schematic diagram of heat pump to melt frost for the present invention, comprise compressor 1, four-way change-over valve 2, sensible heat exchanger 3, first latent heat exchanger 4, second latent heat exchanger 6 and throttling arrangement 5, the refrigerant outlet of described compressor 1 is connected with the first interface 2-1 of four-way change-over valve 2, the second interface 2-2 of four-way change-over valve is connected with the refrigerant inlet of sensible heat exchanger 3, the refrigerant outlet of sensible heat exchanger 3 is connected with the import of the first check valve 7-1 and the outlet of the second check valve 7-2 respectively, the outlet of the first check valve 7-1 is connected with the refrigerant inlet of first latent heat exchanger 4, the refrigerant outlet of first latent heat exchanger 4 is connected with the import of throttling arrangement 5 and the outlet of the 3rd check valve 7-3 respectively, the outlet of throttling arrangement 5 is connected with the import of the second check valve 7-2 and the import of the 4th check valve 7-4 respectively, the outlet of the import of the 3rd check valve 7-3 and the 4th check valve 7-4 is connected with the refrigerant inlet of second latent heat exchanger 6 respectively, the refrigerant outlet of second latent heat exchanger is connected with the 3rd interface 2-3 of four-way change-over valve, and the 4th interface 2-4 of four-way change-over valve is connected with the refrigerant inlet of compressor 1.Wherein sensible heat exchanger is by container and place heat exchanger and heat storage medium in the container to form, and wherein the material of container can be a metal or nonmetal.Heat exchanger can be a coil pipe, plate type heat exchanger etc.Heat storage medium can be fluid, solid or phase-change material, can be organic matter or inorganic matter.Compressor can be displacement type or velocity profile.First latent heat exchanger 4 is a prior art, is equivalent to the condenser in the cooling cycle system, and the heat exchanger form is not limit.Second latent heat exchanger 6 is a surface exchanger of the prior art, is equivalent to the evaporimeter in the cooling cycle system.Throttling arrangement 5 is a prior art, and form do not limit, and can be that capillary, choke valve also can be orifice plates etc.Check valve can be a spring type, also can be gravity-type.
During use, in cooling cycle system, fill cold-producing medium.During kind of refrigeration cycle, the refrigerant vapour first interface 2-1 and second interface 2-2 by four-way change-over valve 2 behind refrigeration compressor 1 adherence pressure enters in the sensible heat exchanger 3, heat storage medium heat radiation in sensible heat exchanger 3, again by the first check valve 7-1, arrive that condensation becomes highly pressurised liquid in first latent heat exchanger 4, and after throttling arrangement 5 step-downs, enter in second latent heat exchanger 6 through the 4th check valve 7-4, the evaporation heat absorption becomes low-pressure steam in second latent heat exchanger 6, owing to the cold-producing medium phase transformation produces the refrigeration phenomenon, the cold-producing medium low-pressure steam is got back to compressor through the 3rd interface 2-3 and the 4th interface 2-4 of four-way change-over valve 2.The heat pump to melt frost circulation time, each passage conversion in the four-way change-over valve 2, the refrigerant vapour first interface 2-1 and the 3rd interface 2-3 by four-way change-over valve 2 behind refrigeration compressor 1 adherence pressure enters in second latent heat exchanger 6, condensation heat release in second latent heat exchanger 6, the condenser heat of emitting condenses in second latent heat exchanger, 6 lip-deep frosts during with kind of refrigeration cycle and melts, condensing becomes the cold-producing medium of highly pressurised liquid by behind the 3rd check valve 7-3, by throttling arrangement 5 step-downs, enter in the sensible heat exchanger 3 through the second check valve 7-2 again, cold-producing medium absorbs the heat of vaporization that heat storage medium stores in the sensible heat exchanger 3 after second interface 2-2 of four-way change-over valve 2 and the 4th interface 2-4 get back in the compressor 1, finishes the heat pump to melt frost circulation.Owing to stored heat during kind of refrigeration cycle in sensible heat exchanger 3, so when carrying out the heat pump to melt frost circulation time, the evaporating temperature of system is enhanced, thereby the system effectiveness when having improved defrosting has been accelerated the speed of defrosting, has shortened the defrosting time.
When the heat pump to melt frost system moves,, do not allow first latent heat exchanger 4 participate in heat pump cycle again because the adding of sensible heat exchanger 3 had both guaranteed the high-pressure in first latent heat exchanger 4.Like this, when system from heat pump cycle when kind of refrigeration cycle is changed, the high-pressure in first latent heat exchanger 4 is utilized, refrigeration system can be set up the high-low pressure pressure differential very soon, thereby the efficient when having improved conversion has shortened conversion time.
Although relate to a kind of cooling cycle system of heat pump to melt frost that adopts and carried out special description disclosed with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.
Claims (4)
1. cooling cycle system that adopts heat pump to melt frost, it is characterized in that, comprise compressor, four-way change-over valve, sensible heat exchanger, first latent heat exchanger, second latent heat exchanger and throttling arrangement, the refrigerant outlet of described compressor is connected with first interface of four-way change-over valve, second interface of four-way change-over valve is connected with the refrigerant inlet of sensible heat exchanger, the refrigerant outlet of sensible heat exchanger is connected with the import of first check valve and the outlet of second check valve respectively, the outlet of first check valve is connected with the refrigerant inlet of first latent heat exchanger, the refrigerant outlet of first latent heat exchanger is connected with the import of throttling arrangement and the outlet of the 3rd check valve respectively, the outlet of throttling arrangement is connected with the import of second check valve and the import of the 4th check valve respectively, the outlet of the import of the 3rd check valve and the 4th check valve is connected with the refrigerant inlet of second latent heat exchanger respectively, the refrigerant outlet of second latent heat exchanger is connected with the 3rd interface of four-way change-over valve, and the 4th interface of four-way change-over valve is connected with the refrigerant inlet of compressor.
2. the cooling cycle system of employing heat pump to melt frost according to claim 1 is characterized in that, described sensible heat exchanger is by container and place heat exchanger and heat storage medium in the container to form.
3. the cooling cycle system of employing heat pump to melt frost according to claim 1 is characterized in that, described throttling arrangement is any in capillary, choke valve, the orifice plate.
4. the cooling cycle system of employing heat pump to melt frost according to claim 1 is characterized in that, described second latent heat exchanger is a surface exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100529452A CN101270936B (en) | 2008-04-29 | 2008-04-29 | Refrigerating cycle system adopting heat pump to melt frost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100529452A CN101270936B (en) | 2008-04-29 | 2008-04-29 | Refrigerating cycle system adopting heat pump to melt frost |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101270936A CN101270936A (en) | 2008-09-24 |
| CN101270936B true CN101270936B (en) | 2010-07-21 |
Family
ID=40005063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100529452A Expired - Fee Related CN101270936B (en) | 2008-04-29 | 2008-04-29 | Refrigerating cycle system adopting heat pump to melt frost |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101270936B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691959B (en) * | 2009-05-25 | 2012-07-18 | 广东志高空调有限公司 | Governing system for constant temperature and constant humidity and integral constant temperature and humidity machine |
| CN102914106A (en) * | 2012-11-27 | 2013-02-06 | 江苏省苏食肉品有限公司 | Refrigerator defrosting method in cold chain system |
| CN104567149B (en) * | 2013-10-16 | 2017-01-11 | 海尔集团公司 | Low-temperature heat-storage defrosting-assisting air conditioner and control method |
| CN103983037B (en) * | 2014-04-22 | 2016-08-24 | 珠海格力电器股份有限公司 | The Two-stage Compression air conditioning system of band defrosting function |
| CN104061705B (en) * | 2014-06-12 | 2017-03-15 | 珠海格力电器股份有限公司 | Two-stage Compression air-conditioning system and its control method |
| CN105466114A (en) * | 2016-02-02 | 2016-04-06 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN108895699B (en) * | 2018-06-25 | 2020-10-30 | 袁一军 | Heat pump and method and system for defrosting refrigeration space |
| CN110940137A (en) * | 2019-12-19 | 2020-03-31 | 珠海格力电器股份有限公司 | Refrigerator and control method thereof |
-
2008
- 2008-04-29 CN CN2008100529452A patent/CN101270936B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101270936A (en) | 2008-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101270936B (en) | Refrigerating cycle system adopting heat pump to melt frost | |
| CN102132110A (en) | Heat pump system | |
| CN106642789B (en) | Heat source tower heat pump system for realizing comprehensive utilization of solar energy and seasonal soil energy storage | |
| CN103808102A (en) | Heat-driven defrosting device using natural circulation and defrosting method using same | |
| CN108302838A (en) | A kind of heat-storage solar energy coupling air source heat pump system and its control method | |
| CN102022793A (en) | Latent heat recovery-based high-efficiency heat pump type heat source tower solution regenerating device and method | |
| CN102322705B (en) | Circulating device combining diffusing absorption-type refrigeration and vapor compression refrigeration | |
| CN202216448U (en) | Diffusion absorption refrigeration and vapor compression refrigeration combined recycle system | |
| CN101413739A (en) | Double-effect heat pump circulation three-effect heat exchanger | |
| CN101487639A (en) | Air-cooling double-evaporator heat pump unit | |
| CN101871702B (en) | Double heat source high-efficiency absorption refrigerating plant | |
| CN101619908A (en) | Energy storage refrigeration method using solar thermal energy driving | |
| CN201463433U (en) | Hot air defroster for multi-set parallel evaporator refrigeration system | |
| CN201875830U (en) | Latent heat recycling based efficient heat pump-type device for regenerating solutions in heat-source tower | |
| CN104132456A (en) | Direct heat type multi-phase transformation point composite heat storage heat-pump water heater system | |
| CN208704227U (en) | Utilize the air-breathing reheating of compressor housing accumulation of heat and the heat pump assembly of hot gas bypass defrosting | |
| CN201199104Y (en) | Heat pump defrosting cooling cycle system | |
| CN103486762A (en) | Heat pump system | |
| CN103765127A (en) | A method for chilling a building | |
| CN202470542U (en) | Heat-pump system of low-temperature air heat source | |
| CN113531967A (en) | Compressor waste heat recovery defrosting system based on phase change energy storage and working method | |
| CN202813923U (en) | Circulation refrigerating system of recirculation evaporator | |
| KR20120082158A (en) | Cooling/heating equipment of water heat exchanging type having generator | |
| CN206514550U (en) | Solar-energy air-energy heat-exchange system with supercooling function | |
| CN101639310A (en) | Hot-gas bypass and surface cooler supercooling defrosting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20080924 Assignee: Tianjin Orient Environmental Protection Energy-Saving Engineering Technology Co.,Ltd. Assignor: Tianjin University Of Commerce Contract record no.: 2013120000039 Denomination of invention: Refrigerating cycle system adopting heat pump to melt frost Granted publication date: 20100721 License type: Exclusive License Record date: 20130724 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20140429 |