CN109900047B - Air-cooled refrigerator - Google Patents
Air-cooled refrigerator Download PDFInfo
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- CN109900047B CN109900047B CN201910119756.0A CN201910119756A CN109900047B CN 109900047 B CN109900047 B CN 109900047B CN 201910119756 A CN201910119756 A CN 201910119756A CN 109900047 B CN109900047 B CN 109900047B
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- heat
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- evaporator
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- 238000010257 thawing Methods 0.000 claims abstract description 22
- 239000006096 absorbing agent Substances 0.000 claims abstract description 20
- 239000002918 waste heat Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 238000005338 heat storage Methods 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 34
- 239000011232 storage material Substances 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000005057 refrigeration Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000003507 refrigerant Substances 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Defrosting Systems (AREA)
Abstract
The invention relates to the technical field of refrigeration, and provides an air-cooled refrigerator, which comprises a heat absorber, wherein the heat absorber is used for absorbing the operation waste heat of a compressor or a condenser and providing heat for an evaporator to defrost. Through setting up the heat absorber and absorbing the operation waste heat of compressor or condenser to supply heat to the evaporimeter, get rid of the frost layer on evaporimeter surface, make full use of the operation waste heat of compressor reduces the energy consumption of electrical heating defrosting mode, improves the refrigeration effect of evaporimeter, reduces running cost.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to an air-cooled refrigerator.
Background
The air-cooled refrigerator has water vapor inside, which is condensed to form frost layer on the surface of the evaporator. When the air-cooled refrigerator runs for a long time, the frost layer becomes thicker, the thickened frost layer can increase the surface thermal resistance of the evaporator, the channels between the fins are blocked, the evaporation temperature of the system is reduced, the refrigerating capacity is affected, and the energy consumption is increased. Therefore, defrosting is required when the frost layer reaches a certain thickness. In addition, when the refrigerator refrigerating system is operated, the condenser dissipates heat in the air, increasing the ambient temperature, and causing energy loss.
At present, defrosting of an air-cooled refrigerator is an electric heater defrosting mode, an electric heater is arranged in an air duct of an evaporator, the electric heater is started when a defrosting period is reached, and the surface frost layer is removed by heating the surface of the evaporator in a heat radiation mode. The mode of heating and defrosting increases the power consumption of the refrigerator, which is about 5-10% of the energy consumption of the whole refrigerator, thus increasing the running cost of the refrigerator. The defrosting time of the electric heating defrosting mode is longer, so that the downtime of the refrigerator compressor is increased, the temperature inside the refrigerator is increased, and the food quality is affected.
Disclosure of Invention
The embodiment of the invention provides an air-cooled refrigerator which is used for solving the problems of poor refrigeration effect, high energy consumption and high operation cost caused by frosting of the surface of an evaporator in the prior art.
The embodiment of the invention provides an air-cooled refrigerator, which comprises a heat absorber, wherein the heat absorber is used for absorbing the operation waste heat of a compressor or a condenser and providing heat for an evaporator to defrost.
The heat absorber comprises a phase-change heat reservoir, the phase-change heat reservoir is arranged on the outer side of a shell of the compressor, a heat storage material is arranged in the phase-change heat reservoir, and a heat storage pipeline is immersed in the heat storage material.
The heat storage device comprises a compressor, an evaporator, a liquid inlet, a liquid outlet and a connecting part, wherein the connecting pipeline between the compressor and the evaporator is provided with a first three-way valve, a first port and a second port of the first three-way valve are respectively communicated with the compressor and the evaporator, the liquid inlet of the heat storage pipeline is connected with a third port of the first three-way valve, the liquid outlet of the heat storage pipeline is connected with the liquid inlet of the compressor, and the connecting part is positioned on a pipeline at the downstream of the first three-way valve.
The connecting pipeline between the compressor and the condenser is provided with a second three-way valve, a liquid outlet port of the compressor is connected with a first port of the second three-way valve, a second port of the second three-way valve is connected with a liquid inlet port of the condenser, and a third port of the second three-way valve is connected with a liquid inlet port of the evaporator.
And a bypass throttling device is arranged on a pipeline, wherein the liquid inlet of the heat storage pipeline is connected with the third port of the first three-way valve.
The heat absorber further comprises a water storage tank, the water storage tank is connected with a first circulating pipeline, and the first circulating pipeline is correspondingly arranged with the condenser to absorb operation waste heat of the condenser.
The water storage tank is connected with a second circulating pipeline, and the second circulating pipeline is immersed in the heat storage material.
The heat absorber further comprises a water storage tank, a liquid inlet of the water storage tank is connected with a liquid outlet of the heat storage pipeline, a liquid outlet of the water storage tank is connected with a liquid inlet of the heat storage pipeline through a heat absorption pipeline, and the heat absorption pipeline is correspondingly arranged with the condenser.
One end of a circulating heat supply pipe is immersed in the water storage tank, the other end of the circulating heat supply pipe is arranged corresponding to the evaporator, and low-temperature fluid is arranged in the circulating heat supply pipe.
And a defrosting fan is arranged at one end of the circulating heat supply pipe, which is close to the evaporator, and is used for blowing heat at the end part of the circulating heat supply pipe to the evaporator to defrost.
According to the air-cooled refrigerator provided by the embodiment of the invention, the heat absorber is arranged to absorb the operation waste heat of the compressor or the condenser and supply heat to the evaporator, so that the frost layer on the surface of the evaporator is removed, the operation waste heat of the compressor is fully utilized, the energy consumption of an electric heating defrosting mode is reduced, the refrigeration effect of the evaporator is improved, and the operation cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an air-cooled refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second air-cooled refrigerator according to an embodiment of the present invention.
In the figure, 1: a compressor; 2: a condenser; 3: a throttle device; 4: an evaporator; 5: a first three-way valve; 6: a phase change heat accumulator; 7: a heat storage material; 8: a heat storage pipeline; 9: a filler neck; 10: a bypass throttle device; 11: a water storage tank; 12: a second three-way valve; 13: a partition plate; 14: a circulating heat supply pipe; 15: a defrosting fan; a: a first port; b: a second port; c: and a third port.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" means two or more, and the meaning of "a plurality", "a plurality of roots", "a plurality of groups" means one or more.
The embodiment of the invention provides an air-cooled refrigerator, which comprises a compressor 1, a condenser 2, a throttling device 3 and an evaporator 4 which are sequentially connected and form a circulation loop; and a heat absorber for absorbing the operation waste heat of the compressor 1 or the condenser 2 and supplying heat to the evaporator 4 to defrost.
Example 1:
As shown in fig. 1, embodiment 1 of the present invention provides an air-cooled refrigerator, the heat absorber includes a phase change heat reservoir 6, the phase change heat reservoir 6 is disposed at the outer side of the shell of the compressor 1, a heat storage material 7 is disposed in the phase change heat reservoir 6, the heat storage material 7 is specifically a novel chemical material capable of storing heat energy, and phase change occurs at a specific phase change temperature and is accompanied by absorption or release of heat energy, so as to store heat energy. The heat storage pipeline 8 is immersed in the heat storage material 7, and the heat storage material 7 is subjected to phase change under the action of the operation waste heat of the compressor 1, absorbs and stores heat energy, and further releases heat to the heat storage pipeline 8, so that the heat storage pipeline 8 is heated. The upper end of the phase change heat reservoir 6 is provided with a filling port 9 for adding the heat storage material 7.
The liquid inlet port of the heat storage pipeline 8 is connected with the third port C of the first three-way valve 5 through the bypass throttling device 10, and the first port A and the second port B of the first three-way valve 5 are respectively connected with the connecting pipeline between the compressor 1 and the evaporator 4. The liquid outlet port of the heat accumulation pipeline 8 is connected with the liquid inlet port of the compressor 1, the liquid outlet port of the compressor 1 is connected with the first port A of the second three-way valve 12, the second port B of the second three-way valve 12 is connected with the liquid inlet port of the condenser 2, and the third port C of the second three-way valve 12 is connected with the liquid inlet port of the evaporator 4. By changing the corresponding communication ports of the first three-way valve 5 and the second three-way valve 12, the flow direction of the refrigerant is changed so as to switch the refrigeration and defrosting modes, and the heat absorbed by the heat storage pipeline 8 is conveyed into the evaporator 4 to heat and defrost the evaporator 4.
Further, the heat absorber further comprises a water storage tank 11, a first circulating pipeline is arranged on one side of the water storage tank 11 and communicated with the water storage tank 11, and two ends of the first circulating pipeline are communicated with the water storage tank 11 to form backflow circulation. The first circulation pipeline is arranged corresponding to the condenser 2 to absorb the operation waste heat of the condenser 2. Specifically, the first circulation pipeline is provided with a circulating water pump for providing circulating power, and the heat absorbing end of the first circulation pipeline is arranged in the condenser 2, but water in the first circulation pipeline does not flow through the condenser 2, so that the temperature of the condenser 2 is reduced.
Wherein, the opposite side of storage water tank 11 is equipped with the second circulation pipeline of intercommunication, and the both ends of second circulation pipeline all communicate with storage water tank 11, forms the backward flow circulation. A section of the second circulation line is immersed in the heat storage material 7 to absorb the thermal energy stored in the heat storage material 7. And a circulating water pump is arranged on the second circulating pipeline to realize continuous heat absorption of the running waste heat of the compressor 1.
The workflow of example 1 of the present invention is as follows:
with the extension of refrigerating time, a frost layer can be formed on the outer surface of the evaporator 4, in a defrosting mode, through arranging the phase change heat accumulator 6 outside the shell of the compressor 1, the phase change heat accumulator 6 is filled with the heat accumulating material 7, the operation heat emitted by the compressor 1 is absorbed when the refrigerating system operates, the first port A and the third port C of the first three-way valve 5 are communicated, the second port B is closed, high-temperature refrigerant flowing out of the compressor 1 enters the evaporator 4 through the bypass pipe, high-temperature refrigerant gas exchanges heat with the frost layer on the outer surface of the evaporator 4 to enable the high-temperature refrigerant gas to be melted, then the refrigerant flowing out of the evaporator 4 is throttled and depressurized through the bypass pipe throttling device 10, enters the phase change heat accumulator 6 through the heat accumulating pipe 8 to complete evaporation, and then enters the compressor 1, and the refrigerant circulates in the mode to complete defrosting cycle.
When the air-cooled refrigerator does not need defrosting, the heat of the condenser 2 and the running heat of the compressor 1 are brought into the water storage tank 11 by using the circulating water pump circulating water on the first circulating pipeline through the water storage tank 11, the temperature of the condenser 2 and the temperature of the compressor 1 can be effectively reduced by increasing the water circulation, the energy consumption of a refrigerating system is reduced, and the refrigerating effect is improved; in addition, the water storage tank 11 can be used as domestic water, thereby providing convenience for life.
Example 2:
This embodiment is substantially the same as embodiment 1, and for brevity of description, in the description of this embodiment, the same technical features as embodiment 1 will not be described, and only the differences between this embodiment and embodiment 1 will be described.
As shown in fig. 2, the heat absorber is used to absorb the residual heat of the operation of the compressor 1 and the condenser 2, and to supply heat to the evaporator 4 to defrost. The heat absorber also comprises a water storage tank 11, a liquid inlet of the water storage tank 11 is connected with a liquid outlet of the heat storage pipeline 8, and a circulating water pump is arranged on the connecting pipeline to provide circulating power. The liquid outlet of the water storage tank 11 is connected with the liquid inlet of the heat storage pipeline 8 through a heat absorption pipeline, the heat absorption pipeline is correspondingly arranged with the condenser 2, and the corresponding arrangement is understood to be the arrangement that the heat absorption pipeline is in contact with the condenser 2 but is not communicated so as to realize the purpose that the heat generated by the operation of the condenser 2 can be absorbed by the heat absorption pipeline. The absorption of the heat of operation of the compressor 1 and the condenser 2 by the water storage tank 11 is realized.
Wherein, one end of the circulating heat supply pipe 14 is immersed in the water storage tank 11, thereby realizing the heating of the flowing medium in the circulating heat supply pipe 14. The other end of the circulating heat supply pipe 14 is correspondingly arranged with the evaporator 4, and the circulating heat supply pipe 14 is internally provided with low-temperature fluid, and the low-temperature fluid can be specifically selected as saline solution to prevent the evaporator 4 from freezing under the low-temperature effect. A defrosting fan 15 is provided at an end of the circulation heat supply pipe 14 close to the evaporator 4 to blow heat at the end of the circulation heat supply pipe 14 toward the evaporator 4 to defrost. The circulation heat supply pipe 14 is provided with a low-temperature fluid pump. The water storage tank 11 is internally provided with a baffle 13 for dividing the water in the water storage tank 11 into two parts, one part is used for defrosting, and the other part can be used as domestic hot water.
The working flow of the embodiment of the invention is as follows:
When the air-cooled refrigerator runs in a refrigerating system, the water storage tank 11 is full, the circulating water pump is started, and the running heat of the condenser 2 and the running heat of the compressor 1 are brought into the water storage tank 11 by water circulation. As the refrigerating time is prolonged, a frost layer is formed on the outer surface of the evaporator 4, the low-temperature fluid pump and the defrosting fan 15 are turned on, the low-temperature fluid pipeline transfers heat of the water storage tank 11 to the surface of the evaporator 4, and the defrosting fan 15 removes the frost layer on the surface of the evaporator 4 in a forced convection mode.
According to the air-cooled refrigerator provided by the embodiment of the invention, the heat absorber is arranged to absorb the operation waste heat of the compressor or the condenser and supply heat to the evaporator, so that the frost layer on the surface of the evaporator is removed, the operation waste heat of the compressor is fully utilized, the energy consumption of an electric heating defrosting mode is reduced, the refrigeration effect of the evaporator is improved, and the operation cost is reduced.
It should be noted that, all or part of the present invention is applied to the refrigerating device such as the refrigerator, the air conditioner or the heat pump, etc. all the solutions are within the protection scope of the present invention.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. An air-cooled refrigerator is characterized by comprising a heat absorber, wherein the heat absorber is used for absorbing the operation waste heat of a compressor or a condenser and providing heat for an evaporator to defrost; the heat absorber comprises a phase change heat reservoir, wherein the phase change heat reservoir is arranged on the outer side of a shell of the compressor, a heat storage material is arranged in the phase change heat reservoir, and a heat storage pipeline is immersed in the heat storage material; the heat absorber also comprises a water storage tank, wherein the water storage tank is connected with a first circulating pipeline, and the first circulating pipeline is correspondingly arranged with the condenser so as to absorb the operation waste heat of the condenser; the water storage tank is connected with a second circulating pipeline which is immersed in the heat storage material;
One end of a circulating heat supply pipe is immersed in the water storage tank, the other end of the circulating heat supply pipe is arranged corresponding to the evaporator, and low-temperature fluid is arranged in the circulating heat supply pipe; a defrosting fan is arranged at one end of the circulating heat supply pipe, which is close to the evaporator, and is used for blowing heat at the end part of the circulating heat supply pipe to the evaporator to defrost; the circulating heat supply pipe is provided with a low-temperature fluid pump, a partition plate is arranged in the water storage tank and used for dividing the water in the water storage tank into two parts, one part is used for defrosting, and the other part is used as domestic hot water.
2. The air-cooled refrigerator according to claim 1, wherein a first three-way valve is arranged on a connecting pipeline between the compressor and the evaporator, a first port and a second port of the first three-way valve are respectively communicated with the compressor and the evaporator, a liquid inlet of the heat storage pipeline is connected with a third port of the first three-way valve, a liquid outlet of the heat storage pipeline is connected with a liquid inlet of the compressor, and the connection is positioned on a pipeline downstream of the first three-way valve.
3. The air-cooled refrigerator according to claim 2, wherein a second three-way valve is arranged on a connecting pipeline between the compressor and the condenser, a liquid outlet port of the compressor is connected with a first port of the second three-way valve, a second port of the second three-way valve is connected with a liquid inlet port of the condenser, and a third port of the second three-way valve is connected with a liquid inlet port of the evaporator.
4. The air-cooled refrigerator of claim 2, wherein a bypass throttling device is arranged on a pipeline connected with the liquid inlet of the heat storage pipeline and the third port of the first three-way valve.
5. The air-cooled refrigerator of claim 1, wherein the heat absorber further comprises a water storage tank, a liquid inlet of the water storage tank is connected with a liquid outlet of the heat storage pipeline, a liquid outlet of the water storage tank is connected with a liquid inlet of the heat storage pipeline through a heat absorption pipeline, and the heat absorption pipeline is arranged corresponding to the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910119756.0A CN109900047B (en) | 2019-02-18 | 2019-02-18 | Air-cooled refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910119756.0A CN109900047B (en) | 2019-02-18 | 2019-02-18 | Air-cooled refrigerator |
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| Publication Number | Publication Date |
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| CN109900047A CN109900047A (en) | 2019-06-18 |
| CN109900047B true CN109900047B (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910119756.0A Active CN109900047B (en) | 2019-02-18 | 2019-02-18 | Air-cooled refrigerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110345697B (en) * | 2019-07-18 | 2024-01-30 | 广东海洋大学 | Refrigerator with a refrigerator body |
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| CN109341165A (en) * | 2018-08-31 | 2019-02-15 | 上海交通大学 | A kind of air source heat pump defrosting system based on heat of compressor phase-change accumulation energy |
| CN210107846U (en) * | 2019-02-18 | 2020-02-21 | 北京工业大学 | Air-cooled refrigerator |
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2019
- 2019-02-18 CN CN201910119756.0A patent/CN109900047B/en active Active
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| CN103175354A (en) * | 2011-12-26 | 2013-06-26 | 珠海格力电器股份有限公司 | Heat storage phase change defrosting device |
| CN104697276A (en) * | 2015-01-15 | 2015-06-10 | 合肥工业大学 | Air-cooled type refrigerator with heat pipe type heat storage and frost removal mechanism |
| CN105241160A (en) * | 2015-05-11 | 2016-01-13 | 北京工业大学 | Heat storage defrosting system and method used for air-cooled refrigerator |
| CN204730543U (en) * | 2015-05-27 | 2015-10-28 | 长安大学 | The defrost system of evaporimeter in a kind of heat pump |
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