CN105241160A - Heat storage defrosting system and method used for air-cooled refrigerator - Google Patents
Heat storage defrosting system and method used for air-cooled refrigerator Download PDFInfo
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- CN105241160A CN105241160A CN201510237055.9A CN201510237055A CN105241160A CN 105241160 A CN105241160 A CN 105241160A CN 201510237055 A CN201510237055 A CN 201510237055A CN 105241160 A CN105241160 A CN 105241160A
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Abstract
The invention provides a heat storage defrosting system and method used for an air-cooled refrigerator and belongs to the technical field of defrosting systems. The heat storage defrosting system comprises a heat storage pipeline, a phase-change heat accumulator and separation type heat pipes for defrosting. The heat storage pipeline is arranged between a compressor and a water collecting disk. A segment of condensation pipeline is introduced from an outlet of the compressor and enters the phase-change heat accumulator. Phase-change material in the phase-change heat accumulator is heated through vapor of an overheating refrigerant during the operation of the refrigerator, and heat of condensation is recycled. When an evaporator in a chamber of the refrigerator needs to be defrosted, the separation type heat pipes for defrosting are used. Heat in the phase-change heat accumulator is rapidly conducted to the evaporator by using the good heat-conducting property of the heat pipes; a frost layer is heated and melted rapidly. According to the heat storage defrosting system and method, defrosting is conducted by using heat of a high-temperature high-pressure condensing agent, so that the power dissipation of defrosting of the refrigerator is reduced, and energy is saved.
Description
Technical field
The invention belongs to defrosting system technical field, particularly relate to a kind of auto accumulation heat defrosting system for air-cooled frost-free refrigerator and method.
Background technology
Along with living standard is more and more higher, people are increasing for the demand of refrigerator.Along with the food needed by refrigerator storage gets more and more, on market, the volume of refrigerator also becomes large thereupon.Traditional direct cooling refrigerator can not meet the refrigeration demand of large volume refrigerator, so present large volume refrigerator many employings wind cooling refrigerator.
Wind cooling refrigerator mainly makes refrigeration and refrigerating chamber return through evaporimeter and heat exchange with it by evaporator fan, in this temperature-fall period, water vapor in air is separated out at evaporator surface and is condensed into frost, finisher running time increase, frost layer progressive additive, the circulating resistance of heat transfer process thermal resistance and air is increased, air mass flow reduces, and evaporating temperature declines, and evaporator heat exchange performance reduces.Therefore, when evaporator surface frost layer reaches certain thickness, need regularly to defrost.
But traditional wind cooling refrigerator defrost process adopts electrical heating defrost, there is power in defrost process large, the shortcoming that defrost finisher temperature is higher.
Summary of the invention
For the problems referred to above, main contents of the present invention are to provide a kind of novel accumulation of heat defrosting system for the air-cooled frost-free refrigerator of family expenses and method.
This system, from freezer compressor outlet extraction one section of accumulation of heat pipeline, enters a phase change heat accumulator, the superheated refrigerant steam heated phase-change material wherein of discharging when utilizing freezer compressor to run, recovering condensing heat.When needs are to the defrost of refrigerator indoor evaporator, by separate heat pipe, the thermal conductivity utilizing it outstanding is by the heat conduction in storage heater to evaporimeter, and heating frost layer, makes frost layer fast melt.
For achieving the above object, the present invention adopts following technical scheme:
Accumulation of heat defrosting system for wind cooling refrigerator mainly comprises accumulation of heat pipeline, phase change heat accumulator and defrost separate heat pipe three part.
Wherein said accumulation of heat pipeline is the pipeline branched out from refrigerator refrigerant circulation line, and the other end of accumulation of heat pipeline is connected with drip tray; Described phase change heat accumulator is a thermal-insulating body, fills phase change heat storage material in thermal-insulating body, and accumulation of heat pipeline contacts with phase change heat storage material through phase change heat accumulator; Defrost separate heat pipe is divided into two parts: evaporator section and condensation segment, wherein, it is inner that evaporator section is positioned at described phase change heat accumulator, for absorbing the heat in phase change heat storage material in defrost process, condensation segment is positioned at the evaporator surface of freezer compartment of refrigerator, discharges for the heat absorbed by evaporator section the frost layer passing to evaporator surface fast.
In preferred accumulation of heat pipeline, one section is heat-storage plate tubular construction, and accumulation of heat coil pipe is positioned at phase change heat accumulator.
Adopt connecting line to connect between the evaporator section of preferable separate formula heat pipe and condensation segment, connecting line is provided with stop valve.
Accumulation of heat pipeline enters described phase change heat accumulator from bottom, as heat-storage plate pipe heater.The material of described accumulation of heat pipeline is identical with conventional refrigerator refrigerating circulation material.The stop valve of separate heat pipe is positioned on connecting line, is automatic stop valve, for stopping the heat transfer process of separate heat pipe when refrigerator normally works.
Phase change heat storage material, for phase transition temperature is the industrial paraffin of 40 DEG C.Described phase-change material is for storing compressor air-discharging heat.
For the air-cooled frost-free refrigerator of traditional family expenses, between compressor and drip tray pipeline, add one section of refrigerant line, as accumulation of heat pipeline.This section of pipeline enters described phase change heat accumulator from bottom, as the heat-storage plate pipe heater of phase change heat accumulator.
Said system is adopted to carry out the method for defrost, it is characterized in that, the accumulation of heat pipeline branched out from refrigerator refrigerant circulation line, a phase change heat accumulator, the superheated refrigerant steam heated phase change heat storage material wherein of discharging when utilizing freezer compressor to run, recovering condensing heat; When needs are to the defrost of refrigerator indoor evaporator, by separate heat pipe, by the heat conduction in storage heater to evaporimeter, heating frost layer, makes frost layer fast melt.
The invention provides a kind of for wind cooling refrigerator accumulation of heat defrosting system, comprise accumulation of heat pipeline, phase change heat accumulator, defrost separate heat pipe.Described accumulation of heat pipeline is arranged between compressor and drip tray, draws one section of condenser pipe, enter phase change heat accumulator from compressor outlet, the superheated refrigerant steam heated phase-change material wherein when utilizing refrigerator to run, recovering condensing heat.When needs are to the defrost of refrigerator indoor evaporator, by described defrost separate heat pipe.Heat in phase change heat accumulator is conducted to evaporimeter by heat conductivility fast that utilize heat pipe outstanding, and heating frost layer, makes frost layer fast melt.The present invention utilizes the heat of HTHP condensing agent to carry out defrost, reduces the power consumption of refrigerator defrost, economize energy.
Accompanying drawing explanation
Fig. 1 is overall system architecture schematic diagram of the present invention.
Fig. 2 is the structural representation of accumulation of heat pipeline of the present invention.
Fig. 3 is the structural representation of phase change heat accumulator of the present invention.
Fig. 4 is the structural representation of defrost separate heat pipe of the present invention.
In figure:
1. accumulation of heat pipeline; 2. phase change heat accumulator; 3. defrost separate heat pipe; 4. freezer compressor; 5. drip tray; 6. phase change heat storage material; 7. evaporator section; 8. condensation segment; 9. connecting line; 10. stop valve; 11. evaporimeters.
Specific implementation method
Accumulation of heat defrosting system specific implementation method accompanying drawings for the air-cooled frost-free refrigerator of family expenses of the present invention is as follows, but is not limited to following examples.
Embodiment 1
The described accumulation of heat defrosting system for the air-cooled frost-free refrigerator of family expenses as shown in Figure 1, mainly comprises accumulation of heat pipeline 1, phase change heat accumulator 2 and defrost separate heat pipe 3.
Wherein, described accumulation of heat pipeline 1 as shown in Figure 2.Accumulation of heat pipeline 1 is one section of refrigerant circulation line between freezer compressor 4 and drip tray 5.Accumulation of heat pipeline 1, from compressor outlet, enters phase change heat accumulator.In phase change heat accumulator, accumulation of heat pipeline uses as the heating heat exchanger of heating phase change heat storage material.
Wherein, described phase change heat accumulator 2 as shown in Figure 3.Phase change heat accumulator 2 is positioned at refrigerator bottom behind, and be the insulation shell of a regular hexahedron shape, there is the accumulation of heat pipeline 1 as heating heat exchanger inside, phase change heat storage material 6, the defrost evaporator section 7 of separate heat pipe 3.The wherein bottom of accumulation of heat pipeline 1 in phase change heat accumulator 2, the evaporator section 7 of defrost separate heat pipe 3 is positioned at the middle and upper part of phase change heat accumulator 2.Other parts fill up phase change heat storage material 6, and described phase change heat storage material is paraffin.The phase transition temperature of described paraffin is at 40 DEG C.
Wherein, described defrost separate heat pipe 3 as shown in Figure 4.Separate heat pipe 3 comprises evaporator section 7, condensation segment 8, connecting line 9 and stop valve 10.Wherein, evaporator section 7 is positioned at phase change heat accumulator 2, for absorbing the heat stored in phase-change material in defrost process.Condensation segment 8 is positioned at the surface of freezer evaporator 11, for giving the surperficial frost layer heating of evaporimeter 11 in defrost process.Connecting line 9 is for connecting evaporator section and condensation segment.Stop valve 10 for stopping the heat exchange of separate heat pipe 3 in refrigerator course of normal operation.
The course of work of the described accumulation of heat defrosting system for the air-cooled frost-free refrigerator of family expenses is as follows:
The accumulation of heat defrosting system for the air-cooled frost-free refrigerator of family expenses that the present invention relates to for replacing the electrochemical defrosting system of traditional wind cooling refrigerator, so basic defrosting control strategy is constant.In refrigerator course of normal operation, the superheated refrigerant steam that compressor is discharged is first through accumulation of heat coil pipe 1, and to phase-change material 6 release heat in phase change heat accumulator 2, heat-storing material is heated to heat up and melts, by heat storage in phase change heat accumulator.When refrigerator control system monitor to carry out defrost time, compressor shutdown, refrigeration system is out of service; the stop valve 10 of defrost separate heat pipe 3 is opened; the defrost evaporator section of separate heat pipe 3 and condensation segment UNICOM, utilize heat pipe fast by heat conduction to evaporator surface, quickly defrosting.After refrigerator control system judges that defrosting terminates, the stop valve 10 of defrost separate heat pipe 3 is closed, and defrost separate heat pipe 3 stops heat conduction, enters next cycle.
Claims (8)
1. for an accumulation of heat defrosting system for wind cooling refrigerator, it is characterized in that, mainly comprise accumulation of heat pipeline, phase change heat accumulator and defrost separate heat pipe three part;
Wherein said accumulation of heat pipeline is the pipeline branched out from refrigerator refrigerant circulation line, and the other end of accumulation of heat pipeline is connected with drip tray; Described phase change heat accumulator is a thermal-insulating body, fills phase change heat storage material in thermal-insulating body, and accumulation of heat pipeline contacts with phase change heat storage material through phase change heat accumulator; Defrost separate heat pipe is divided into two parts: evaporator section and condensation segment, wherein, it is inner that evaporator section is positioned at described phase change heat accumulator, for absorbing the heat in phase change heat storage material in defrost process, condensation segment is positioned at the evaporator surface of freezer compartment of refrigerator, discharges for the heat absorbed by evaporator section the frost layer passing to evaporator surface fast.
2. according to a kind of accumulation of heat defrosting system for wind cooling refrigerator of claim 1, it is characterized in that, in accumulation of heat pipeline, one section is heat-storage plate tubular construction, and accumulation of heat coil pipe is positioned at phase change heat accumulator.
3., according to a kind of accumulation of heat defrosting system for wind cooling refrigerator of claim 1, it is characterized in that, adopt connecting line to connect between the evaporator section of separate heat pipe and condensation segment, connecting line is provided with stop valve.
4., according to a kind of accumulation of heat defrosting system for wind cooling refrigerator of claim 1, it is characterized in that, the stop valve of separate heat pipe is positioned on connecting line, is automatic stop valve.
5. according to a kind of accumulation of heat defrosting system for wind cooling refrigerator of claim 1, it is characterized in that, for the air-cooled frost-free refrigerator of traditional family expenses, between compressor and drip tray pipeline, add one section of refrigerant line, as accumulation of heat pipeline; This section of pipeline enters described phase change heat accumulator from bottom, as the heat-storage plate pipe heater of phase change heat accumulator.
6. according to a kind of accumulation of heat defrosting system for wind cooling refrigerator of claim 1, it is characterized in that, phase change heat storage material to be phase transition temperature the be industrial paraffin of 40 DEG C.
7. utilize any one accumulation of heat defrosting system for wind cooling refrigerator of claim 1-6 to carry out the method for defrost, it is characterized in that, it is characterized in that, the accumulation of heat pipeline branched out from refrigerator refrigerant circulation line, a phase change heat accumulator, the superheated refrigerant steam heated phase change heat storage material wherein of discharging when utilizing freezer compressor to run, recovering condensing heat; When needs are to the defrost of refrigerator indoor evaporator, by separate heat pipe, by the heat conduction in storage heater to evaporimeter, heating frost layer, makes frost layer fast melt.
8. comprise any refrigerator for the accumulation of heat defrosting system of wind cooling refrigerator of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510237055.9A CN105241160A (en) | 2015-05-11 | 2015-05-11 | Heat storage defrosting system and method used for air-cooled refrigerator |
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| CN201510237055.9A CN105241160A (en) | 2015-05-11 | 2015-05-11 | Heat storage defrosting system and method used for air-cooled refrigerator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606844A (en) * | 2017-08-18 | 2018-01-19 | 青岛海尔股份有限公司 | Refrigerator |
| CN108151564A (en) * | 2018-02-13 | 2018-06-12 | 国网山东节能服务有限公司 | A kind of heat pipe heat accumulation heat exchanger of Diameter of connecting pipe variation |
| CN108204759A (en) * | 2018-02-13 | 2018-06-26 | 国网山东节能服务有限公司 | A kind of heat pipe heat accumulation heat exchanger of communicating pipe quantity variation |
| CN108225068A (en) * | 2018-02-13 | 2018-06-29 | 国网山东省电力公司济宁供电公司 | A kind of heat pipe heat accumulation heat exchanger for expanding evaporation end area |
| CN108603712A (en) * | 2016-04-13 | 2018-09-28 | 松下知识产权经营株式会社 | Freezer and cooling system |
| CN109883228A (en) * | 2018-02-13 | 2019-06-14 | 山东大学 | A kind of design method of section space-efficient storage heater |
| CN109900047A (en) * | 2019-02-18 | 2019-06-18 | 北京工业大学 | Wind cooling refrigerator |
| CN110173945A (en) * | 2019-05-07 | 2019-08-27 | 湖北美的电冰箱有限公司 | Refrigeration equipment |
| CN110645760A (en) * | 2019-10-30 | 2020-01-03 | 福建工程学院 | Energy storage type air-cooled frost-free refrigerator and defrosting method thereof |
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| CN2156453Y (en) * | 1993-03-12 | 1994-02-16 | 康狄恩 | Defrost device for freezer |
| CN1105748A (en) * | 1993-11-26 | 1995-07-26 | 株式会社东芝 | Refriperator |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108603712A (en) * | 2016-04-13 | 2018-09-28 | 松下知识产权经营株式会社 | Freezer and cooling system |
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| CN108151564B (en) * | 2018-02-13 | 2020-06-26 | 国网山东节能服务有限公司 | Heat pipe heat storage heat exchanger with variable pipe diameter of communicating pipe |
| CN109883228A (en) * | 2018-02-13 | 2019-06-14 | 山东大学 | A kind of design method of section space-efficient storage heater |
| CN108225068A (en) * | 2018-02-13 | 2018-06-29 | 国网山东省电力公司济宁供电公司 | A kind of heat pipe heat accumulation heat exchanger for expanding evaporation end area |
| CN108204759A (en) * | 2018-02-13 | 2018-06-26 | 国网山东节能服务有限公司 | A kind of heat pipe heat accumulation heat exchanger of communicating pipe quantity variation |
| CN108151564A (en) * | 2018-02-13 | 2018-06-12 | 国网山东节能服务有限公司 | A kind of heat pipe heat accumulation heat exchanger of Diameter of connecting pipe variation |
| CN109900047A (en) * | 2019-02-18 | 2019-06-18 | 北京工业大学 | Wind cooling refrigerator |
| CN109900047B (en) * | 2019-02-18 | 2024-05-17 | 北京工业大学 | Air-cooled refrigerator |
| CN110173945A (en) * | 2019-05-07 | 2019-08-27 | 湖北美的电冰箱有限公司 | Refrigeration equipment |
| CN110645760A (en) * | 2019-10-30 | 2020-01-03 | 福建工程学院 | Energy storage type air-cooled frost-free refrigerator and defrosting method thereof |
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Application publication date: 20160113 |
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