CN111536725A - Defrosting method and device for evaporating defrosting refrigerant by using special evaporator - Google Patents
Defrosting method and device for evaporating defrosting refrigerant by using special evaporator Download PDFInfo
- Publication number
- CN111536725A CN111536725A CN202010458380.9A CN202010458380A CN111536725A CN 111536725 A CN111536725 A CN 111536725A CN 202010458380 A CN202010458380 A CN 202010458380A CN 111536725 A CN111536725 A CN 111536725A
- Authority
- CN
- China
- Prior art keywords
- defrosting
- refrigerant
- evaporator
- defrosted
- special
- 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
- 238000010257 thawing Methods 0.000 title claims abstract description 139
- 239000003507 refrigerant Substances 0.000 title claims abstract description 106
- 238000001704 evaporation Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005057 refrigeration Methods 0.000 claims abstract description 27
- 230000008020 evaporation Effects 0.000 claims abstract description 26
- 238000010521 absorption reaction Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a defrosting method and a defrosting device for evaporating a defrosting refrigerant by using a special evaporator, wherein the defrosting method comprises the following steps: shunting the refrigerant of the main refrigeration pipeline to an evaporator to be defrosted, wherein the shunted refrigerant is used as a defrosting medium to release heat to melt frosting on the evaporator; the defrosted refrigerant is conveyed to a special evaporator which is specially used for evaporating and absorbing heat of the defrosted refrigerant, and an independent evaporation and heat absorption route is formed; and (4) conveying the refrigerant which completes the evaporation work in the special evaporator back to the compressor for circulating work. The defrosting method adopts the special evaporator to carry out uniform evaporation refrigeration on the defrosted refrigerant, so that the evaporation area of the refrigeration system is increased, the evaporation temperature of the refrigeration system is not lower than that of the refrigeration system without defrosting during defrosting, and the refrigerating capacity of the system is improved; and the adjustability is high when the compressor for inducing defrosting exhausts air, the superheat degree is easy to control, meanwhile, the refrigerant can stably and continuously work, and the system stability is high.
Description
Technical Field
The invention relates to a defrosting technology of a refrigerating system, in particular to a defrosting method and a defrosting device for evaporating a defrosting refrigerant by using a special evaporator.
Background
The refrigerant defrosting technology is an energy-saving technology, and in the prior art, superheated gas refrigerant is generally adopted as a defrosting medium to defrost an evaporator; there are of course also liquid refrigerants used as defrosting media. In the existing defrosting process, when a defrosting medium passes through an evaporator to be defrosted, heat is released to defrost, and then the defrosting medium is led to the evaporator which is refrigerating to be evaporated and refrigerated.
In the existing continuous defrosting refrigeration system, defrosted defrosting effluent liquid usually enters other front-end pipelines of an evaporator which is performing refrigeration work, is mixed with a refrigerant in a main refrigeration pipeline, and then enters the evaporator to perform refrigeration work; the mass flow of the refrigerant in the main refrigeration pipeline is increased, the area of the evaporator is relatively reduced, and in order to reach the set ambient temperature, the evaporation temperature needs to be lower than that in normal refrigeration operation, so that the refrigeration capacity of the refrigeration system can be reduced. Moreover, the area of the evaporator is relatively reduced, so that the system has high operation pressure and poor stability.
Disclosure of Invention
The invention aims to overcome the existing problems and provides a defrosting method for evaporating defrosting refrigerants by using a special evaporator, wherein the defrosting method is characterized in that the special evaporator is adopted to carry out uniform evaporation refrigeration on the defrosted refrigerants, so that the evaporation temperature of a refrigeration system during defrosting is not lower than that during non-defrosting, and the refrigeration capacity of the system is improved; moreover, the area reduction of the defrosting evaporator is compensated by the special evaporator, so that the operation pressure change of the system is reduced, and the stability of the system is improved.
Another object of the present invention is to provide a defrosting apparatus that evaporates defrosting refrigerant using a dedicated evaporator.
The purpose of the invention is realized by the following technical scheme:
a defrosting method for evaporating defrosting refrigerant by using a special evaporator comprises the following steps:
shunting the refrigerant of the main refrigeration pipeline to an evaporator to be defrosted, wherein the shunted refrigerant is used as a defrosting medium to release heat to melt frosting on the evaporator; the defrosted refrigerant is conveyed to a special evaporator which is specially used for evaporating and absorbing heat of the defrosted refrigerant, and an independent evaporation and heat absorption route is formed; and (4) conveying the refrigerant which completes the evaporation work in the special evaporator back to the compressor for circulating work.
The defrosting method for evaporating the defrosting refrigerant by using the special evaporator has the working principle that:
when the defrosting device works, the compressor compresses low-temperature and low-pressure gas refrigerant into high-temperature and high-pressure gas refrigerant through compression work, then part of the high-temperature and high-pressure gas refrigerant is shunted to the evaporator to be defrosted through the defrosting pipeline, and the gas refrigerant is used as defrosting medium to release heat to melt frosting on the evaporator. Then the defrosted refrigerant is conveyed to a special evaporator which is specially used for evaporating and refrigerating the defrosted refrigerant, and finally the refrigerated refrigerant which finishes the evaporation work in the special evaporator is circularly conveyed to a compressor.
In the process, the defrosted refrigerant is introduced into the special evaporator to be evaporated and absorb heat independently, and is not converged with the refrigerant of the main refrigerating pipeline to be refrigerated, but a special evaporation route for the defrosted refrigerant is formed, so that the evaporation temperature of the refrigerating system during defrosting is not lower than that during defrosting, and the refrigerating capacity of the system is improved. Moreover, the area reduction of the defrosting evaporator is compensated by the special evaporator, so that the operation pressure change of the system is reduced, and the stability of the system is improved.
In a preferred embodiment of the present invention, the branched refrigerant is a high-temperature and high-pressure gas refrigerant, a liquid refrigerant, or a vapor-liquid mixture refrigerant. Wherein, adopt vapour-liquid mixture body as the medium of defrosting, can utilize the characteristic that its endothermic ability equals exothermic ability to and the advantage of easily controlling, even reveal the heat for the external world in the in-process of defrosting, nevertheless through subsequent evaporation heat absorption, also can absorb the heat back equally, can not reduce refrigerating system's refrigeration efficiency.
In a preferred embodiment of the present invention, at least one evaporator dedicated to cooling is cooling during defrosting operation.
In a preferred embodiment of the present invention, the dedicated evaporator is used as a standby cold source for other storehouses to balance heat dissipation of other storehouses. When a plurality of storehouses are used, the special defrosting evaporator can become a standby cold source of other storehouses, the basic heat dissipation of the storehouses is balanced, the temperature is maintained, and the design requirement of mutual standby of the storehouses is met.
A defrosting device for evaporating defrosting refrigerant by utilizing a special evaporator is integrated in a refrigerating system and comprises a defrosting pipeline, a special evaporator and a defrosting liquid outlet pipeline, wherein the defrosting pipeline is used for shunting the refrigerant of a main refrigerating pipeline into an evaporator to be defrosted;
the defrosting pipeline is connected to the main refrigerating pipeline in a bypassing mode, the head end of the defrosting liquid outlet pipeline is connected to the outlet of the evaporator to be defrosted, and the tail end of the defrosting liquid outlet pipeline is connected to the inlet of the special evaporator.
In a preferred embodiment of the present invention, the defrosting pipe is connected between the compressor and the condenser at a head end and is connected at an inlet of the evaporator to be defrosted at a tail end. In this way, it is possible to deliver a high enthalpy of the gaseous refrigerant to the evaporator to be defrosted, thereby achieving efficient defrosting operation. Of course, after the head end of the defrosting pipeline is connected with the condenser, the condensed liquid refrigerant is conveyed to the evaporator to be defrosted.
Preferably, the defrosting pipeline is provided with a flow control valve for controlling the flow of the refrigerant introduced into the pipeline and a pressure controller for adjusting the pressure of the defrosting medium in the pipeline.
In a preferred embodiment of the present invention, a dedicated expansion valve is disposed on the defrosting liquid outlet pipe.
In a preferred embodiment of the present invention, the outlet of the dedicated evaporator is connected to the head end of a loop pipe, the tail end of which is connected to the inlet of the compressor. In this way, after evaporation and heat absorption in the dedicated evaporator, the refrigerant in the dedicated evaporator is sent back to the compressor cycle for operation through the loop pipeline.
Compared with the prior art, the invention has the following beneficial effects:
1. the defrosting method of the invention leads the defrosted refrigerant into the special evaporator to carry out evaporation and heat absorption independently, and does not merge with the refrigerant of the main refrigerating pipeline for refrigeration, but forms a special evaporation route for the defrosted refrigerant, thus the evaporation temperature of the refrigerating system during defrosting is not lower than that during defrosting, and the refrigerating capacity of the system is improved.
2. The refrigerant after defrosting is conveyed to a special evaporator for evaporation and heat absorption, so that the adjustability of the compressor during exhaust can be improved, and the degree of superheat of returned air can be easily controlled.
3. In the defrosting method, the refrigerant can stably and continuously work, and the system stability is high.
4. When the defrosting method is used for multiple storehouses, the special defrosting evaporator can be used as a standby cold source for other storehouses, so that the basic heat dissipation of the storehouses is balanced, the temperature is maintained, and the design requirement of mutual standby of the multiple storehouses is met.
Drawings
FIG. 1 is a pressure-enthalpy diagram of an embodiment, wherein numerals indicate positions of refrigerants, 1a indicates an inlet of a compressor in normal cooling, 2a indicates an inlet of a condenser in normal cooling, 3a indicates an inlet of an expansion valve in normal cooling, and 4a indicates an inlet of an evaporator in normal cooling; 1 represents a compressor inlet during defrosting, 2 represents a condenser inlet during defrosting, 3 represents an expansion valve inlet during defrosting, 4 represents an evaporator inlet during defrosting, 5 represents an evaporator inlet to be defrosted during defrosting, 6 represents an evaporator outlet to be defrosted during defrosting, and 7 represents a special evaporator inlet during defrosting; wherein, the circulation path of the refrigerant as the defrosting medium is as follows: 1-2-5-6-7.
Fig. 2 is a schematic configuration diagram of an embodiment of a defrosting method of evaporating defrosting refrigerant by using a dedicated evaporator according to the present invention applied to a refrigeration system, wherein a defrosting pipe is indicated by a dotted line.
Detailed Description
In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Example 1
Referring to fig. 2, the defrosting apparatus for evaporating defrosting refrigerant by using a dedicated evaporator in the present embodiment is integrated in a refrigeration system, and includes a defrosting pipe 1 for shunting refrigerant of a main refrigeration pipe 12 to an evaporator 3(a) to be defrosted, a dedicated evaporator 5 for evaporating and absorbing heat of the defrosted refrigerant, and a defrosting liquid outlet pipe 4 for delivering the defrosted refrigerant to the dedicated evaporator 5, wherein the defrosting pipe 1 is bypassed to the main refrigeration pipe 12, and a head end of the defrosting liquid outlet pipe 4 is connected to an outlet of the evaporator 3(a) to be defrosted and a tail end of the defrosting liquid outlet pipe 4 is connected to an inlet of the dedicated evaporator 5.
Referring to fig. 2, the defrosting pipe 1 is connected at a head end between the compressor 2 and the condenser 7 and at a tail end at an inlet of the evaporator 3(a) to be defrosted. In this way, it is possible to deliver a high enthalpy of the gas refrigerant into the evaporator 3(a) to be defrosted, thereby achieving an efficient defrosting operation. Of course, the head end of the defrosting pipe 1 is connected to the condenser 7, and then the condensed liquid refrigerant is sent to the evaporator 3(a) to be defrosted.
Furthermore, the defrosting pipe 1 is provided with a flow control valve 9 for controlling the flow of the refrigerant introduced into the pipe and a pressure controller 10 for adjusting the pressure of the defrosting medium in the pipe.
Referring to fig. 2, a dedicated expansion valve 11 is arranged on the defrosting liquid outlet pipe 4.
With reference to fig. 2, the outlet of said dedicated evaporator 5 is connected to the head end of a circuit pipe 6, the end of which circuit pipe 6 is connected at the inlet of the compressor 2. After the heat is absorbed by the evaporation in the dedicated evaporator 5, the refrigerant in the dedicated evaporator 5 is sent back to the compressor 2 through the loop pipe 6 for circulation.
Referring to fig. 1-2, the defrosting method using a dedicated evaporator to evaporate defrosting refrigerant in the present embodiment includes the following steps:
the partial gas refrigerant (most of the gas refrigerant is conveyed to the evaporator 3(b) for normal refrigeration) which is compressed by the compressor 2 to do work and has high temperature and high pressure is shunted to the evaporator 3(a) to be defrosted through the defrosting pipeline 1, and the gas refrigerant is used as a defrosting medium to release heat to melt frost on the evaporator, as in the process 5-6. The defrosted refrigerant is conveyed to a special evaporator 5 which is specially used for evaporating and absorbing heat of the defrosted refrigerant through a defrosting liquid outlet pipeline 4 to form an independent evaporation and heat absorption route, such as a process 6-7-1; the refrigerant in the dedicated evaporator 5 is sent back to the compressor 2 for circulation through the loop pipe 6.
Specifically, in the defrosting operation, at least one evaporator dedicated to cooling is cooling. Of course, the number of evaporators can be three, four or even more.
In this embodiment, the dedicated evaporator is used as a standby cold source for other storehouses to balance heat dissipation of other storehouses. When a plurality of storehouses are used, the special defrosting evaporator can become a standby cold source of other storehouses, the basic heat dissipation of the storehouses is balanced, the temperature is maintained, and the design requirement of mutual standby of the storehouses is met.
Referring to fig. 1-2, the defrosting apparatus using a dedicated evaporator to evaporate defrosting refrigerant in the present embodiment operates on the following principle:
when the defrosting device works, the compressor 2 compresses low-temperature and low-pressure gas refrigerant into high-temperature and high-pressure gas refrigerant through compression work, then a part of the high-temperature and high-pressure gas refrigerant is shunted to the evaporator 3(a) to be defrosted through the defrosting pipeline 1, and the gas refrigerant is used as defrosting medium to release heat to melt frosting on the evaporator. Then the defrosted refrigerant is conveyed to a special evaporator 5 which is specially used for evaporating and refrigerating the defrosted refrigerant, and finally the refrigerated refrigerant evaporated in the special evaporator 5 is circularly conveyed to the compressor 2.
In the process, the defrosted refrigerant is introduced into the special evaporator 5 to carry out evaporation and heat absorption independently, and is not merged with the refrigerant of the main refrigerating pipeline 12 for refrigeration, but a special evaporation route for the defrosted refrigerant is formed, so that the evaporation temperature of a refrigeration system during defrosting is not lower than that during non-defrosting, and the refrigerating capacity of the system is improved; and the adjustability is high when the compressor 2 for guiding the defrosting exhausts, the superheat degree is easy to control, meanwhile, the refrigerant can stably and continuously work, and the system stability is strong.
Example 2
Unlike embodiment 1, in this embodiment, a vapor-liquid mixture refrigerant is obtained by cooling a gas refrigerant or mixing a gas refrigerant with a liquid refrigerant, and the vapor-liquid mixture refrigerant is used as a defrosting medium for defrosting. Therefore, the vapor-liquid mixture with the heat absorbing capacity not less than the heat releasing capacity is adopted as the defrosting medium, so that the defrosting device is easy to control, and the refrigerating efficiency of the refrigerating system cannot be reduced.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (9)
1. A defrosting method for evaporating defrosting refrigerant by using a special evaporator is characterized by comprising the following steps:
shunting the refrigerant of the main refrigeration pipeline to an evaporator to be defrosted, wherein the shunted refrigerant is used as a defrosting medium to release heat to melt frosting on the evaporator; the defrosted refrigerant is conveyed to a special evaporator which is specially used for evaporating and absorbing heat of the defrosted refrigerant, and an independent evaporation and heat absorption route is formed; and (4) conveying the refrigerant which completes the evaporation work in the special evaporator back to the compressor for circulating work.
2. The defrosting method using a special evaporator to evaporate defrosting refrigerant according to claim 1, wherein the branched refrigerant is a high-temperature and high-pressure gas refrigerant or a liquid refrigerant or a vapor-liquid mixture refrigerant.
3. A defrosting method using an evaporator dedicated to the defrosting refrigerant according to claim 1, wherein at least one evaporator dedicated to the cooling is refrigerating in the defrosting operation.
4. The defrosting method using a special evaporator to evaporate defrosting refrigerant according to claim 1, wherein the special evaporator is used as a spare cold source of other storehouses for balancing heat dissipation of other storehouses.
5. A defrosting device applying the defrosting refrigerant evaporated by the special evaporator according to any one of claims 1 to 4, which is integrated in a refrigerating system and is characterized by comprising a defrosting pipeline for shunting the refrigerant of a main refrigerating pipeline into the evaporator to be defrosted, the special evaporator for evaporating and absorbing heat of the defrosted refrigerant and a defrosting liquid outlet pipeline for conveying the defrosted refrigerant into the special evaporator;
the defrosting pipeline is connected to the main refrigerating pipeline in a bypassing mode, the head end of the defrosting liquid outlet pipeline is connected to the outlet of the evaporator to be defrosted, and the tail end of the defrosting liquid outlet pipeline is connected to the inlet of the special evaporator.
6. The defrosting apparatus of claim 5 wherein the defrosting conduit is connected between the compressor and the condenser at a head end and at an inlet of the evaporator to be defrosted at a tail end.
7. A defrosting apparatus using a dedicated evaporator to evaporate defrosting refrigerant according to claim 6, wherein the defrosting pipe is provided with a flow control valve for controlling the flow rate of the refrigerant introduced into the pipe and a pressure controller for adjusting the pressure of the defrosting medium in the pipe.
8. The defrosting apparatus using the evaporator to evaporate the defrosting refrigerant according to claim 5 wherein the defrosting liquid outlet pipe is provided with a dedicated expansion valve.
9. The defrosting apparatus of claim 1 wherein the outlet of the dedicated evaporator is connected to the head end of a loop pipe, the tail end of which is connected to the inlet of the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010458380.9A CN111536725A (en) | 2020-05-26 | 2020-05-26 | Defrosting method and device for evaporating defrosting refrigerant by using special evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010458380.9A CN111536725A (en) | 2020-05-26 | 2020-05-26 | Defrosting method and device for evaporating defrosting refrigerant by using special evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111536725A true CN111536725A (en) | 2020-08-14 |
Family
ID=71976285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010458380.9A Pending CN111536725A (en) | 2020-05-26 | 2020-05-26 | Defrosting method and device for evaporating defrosting refrigerant by using special evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111536725A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834257A (en) * | 2021-08-31 | 2021-12-24 | 青岛海尔电冰箱有限公司 | Refrigerating system for refrigerating and freezing device and refrigerating and freezing device with refrigerating and freezing system |
| CN116222041A (en) * | 2023-03-20 | 2023-06-06 | 广东省现代农业装备研究所 | Secondary condensation defrosting medium flow control method for refrigeration system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201149399Y (en) * | 2008-07-08 | 2008-11-12 | 西安交通大学 | Refrigeration and defrosting system |
| US20130098092A1 (en) * | 2010-07-29 | 2013-04-25 | Mitsubishi Electric Corporation | Heat pump |
| WO2018074272A1 (en) * | 2016-10-19 | 2018-04-26 | パナソニックＩｐマネジメント株式会社 | Refrigeration device |
| CN109210816A (en) * | 2018-09-29 | 2019-01-15 | 南京五洲制冷集团有限公司 | Double heat source defrosting petroleum vapor recovery units with anti-refrigerant shift function |
| CN209558773U (en) * | 2018-12-28 | 2019-10-29 | 武汉贝索医疗器械有限公司 | Instant freezer with hot gas defrosting function |
| CN111121352A (en) * | 2020-01-16 | 2020-05-08 | 天津商业大学 | Continuous defrosting refrigeration control system capable of reducing heat leakage |
| CN212481775U (en) * | 2020-05-26 | 2021-02-05 | 广东省现代农业装备研究所 | Defrosting device for evaporating defrosting refrigerant by using special evaporator |
-
2020
- 2020-05-26 CN CN202010458380.9A patent/CN111536725A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201149399Y (en) * | 2008-07-08 | 2008-11-12 | 西安交通大学 | Refrigeration and defrosting system |
| US20130098092A1 (en) * | 2010-07-29 | 2013-04-25 | Mitsubishi Electric Corporation | Heat pump |
| WO2018074272A1 (en) * | 2016-10-19 | 2018-04-26 | パナソニックＩｐマネジメント株式会社 | Refrigeration device |
| CN109210816A (en) * | 2018-09-29 | 2019-01-15 | 南京五洲制冷集团有限公司 | Double heat source defrosting petroleum vapor recovery units with anti-refrigerant shift function |
| CN209558773U (en) * | 2018-12-28 | 2019-10-29 | 武汉贝索医疗器械有限公司 | Instant freezer with hot gas defrosting function |
| CN111121352A (en) * | 2020-01-16 | 2020-05-08 | 天津商业大学 | Continuous defrosting refrigeration control system capable of reducing heat leakage |
| CN212481775U (en) * | 2020-05-26 | 2021-02-05 | 广东省现代农业装备研究所 | Defrosting device for evaporating defrosting refrigerant by using special evaporator |
Non-Patent Citations (2)
| Title |
|---|
| （美）ANDREW D.ALTHOUSE等: "《现代冷冻与空调——原理·结构·安装·操作·保养·检修》", vol. 1, 31 July 2001, 上海交通大学出版社, pages: 97 - 98 * |
| 尉迟斌等: "《制冷工程技术辞典》", vol. 1, 31 August 1991, 上海交通大学出版社, pages: 177 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834257A (en) * | 2021-08-31 | 2021-12-24 | 青岛海尔电冰箱有限公司 | Refrigerating system for refrigerating and freezing device and refrigerating and freezing device with refrigerating and freezing system |
| CN116222041A (en) * | 2023-03-20 | 2023-06-06 | 广东省现代农业装备研究所 | Secondary condensation defrosting medium flow control method for refrigeration system |
| CN116222041B (en) * | 2023-03-20 | 2024-02-02 | 广东省现代农业装备研究所 | Secondary condensation defrosting medium flow control method for refrigeration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3102651U (en) | Refrigerator refrigerator with two evaporators | |
| AU2001286333B2 (en) | Method and arrangement for defrosting a vapor compression system | |
| CN101776353A (en) | Cooling tower-based solution type cold and hot water unit | |
| CN111536725A (en) | Defrosting method and device for evaporating defrosting refrigerant by using special evaporator | |
| CN212274329U (en) | Defrosting device adopting defrosted refrigerant to directly spray liquid for evaporation | |
| CN215412599U (en) | Refrigerating system | |
| CN212481775U (en) | Defrosting device for evaporating defrosting refrigerant by using special evaporator | |
| CN201463433U (en) | Hot air defroster for multi-set parallel evaporator refrigeration system | |
| CN212274332U (en) | Defrosting device for supercooling refrigerant of main path of refrigeration cycle | |
| CN212274330U (en) | Defrosting device adopting secondary condensation of refrigerant | |
| CN212274334U (en) | Defrosting device for supercooling main pipeline refrigerant by using defrosting medium | |
| CN201438057U (en) | Hot-gas bypass air conditioner | |
| JPH04320762A (en) | Freezing cycle | |
| CN205641655U (en) | Cascade refrigeration circulation system and have its air conditioner | |
| CN212274333U (en) | Defrosting device for secondary condensation and supercooling of main path refrigerant | |
| CN212274331U (en) | Defrosting device adopting medium specific enthalpy vapor-liquid mixture refrigerant | |
| CN111121352A (en) | Continuous defrosting refrigeration control system capable of reducing heat leakage | |
| CN105705882A (en) | Refrigeration cycle device | |
| CN111536720A (en) | Defrosting method and device adopting secondary condensation of refrigerant | |
| JPH06272998A (en) | Refrigerator | |
| WO2019128518A1 (en) | Air conditioner system | |
| CN111536723A (en) | Defrosting method and device for secondary condensation and supercooling of main path refrigerant | |
| CN111536719A (en) | Defrosting method and device adopting defrosted refrigerant to directly spray liquid for evaporation | |
| CN111536721B (en) | Defrosting method and device adopting medium specific enthalpy vapor-liquid mixture refrigerant | |
| CN113405269A (en) | Refrigerating system and control method thereof |
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 |