CN112066619A - Refrigerator adopting recovered hot defrosting - Google Patents

Refrigerator adopting recovered hot defrosting Download PDF

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Publication number
CN112066619A
CN112066619A CN202010930271.2A CN202010930271A CN112066619A CN 112066619 A CN112066619 A CN 112066619A CN 202010930271 A CN202010930271 A CN 202010930271A CN 112066619 A CN112066619 A CN 112066619A
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CN
China
Prior art keywords
chamber
defrosting
refrigerator
air
evaporator
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
Application number
CN202010930271.2A
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Chinese (zh)
Inventor
刘洋
王铭坤
李江伟
***达
文翔
孟庆鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202010930271.2A priority Critical patent/CN112066619A/en
Publication of CN112066619A publication Critical patent/CN112066619A/en
Pending legal-status Critical Current

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    • 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D21/08—Removing frost by electric heating
    • 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
    • F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)

Abstract

The invention discloses a refrigerator adopting recovered hot defrosting, which comprises: the defrosting device comprises a shell, wherein an evaporation chamber, a condensation chamber and a defrosting air channel are arranged in the shell, and the evaporation chamber is communicated with the condensation chamber through the defrosting air channel; an evaporator disposed within the evaporation chamber; a condenser disposed within the condensing chamber; the heat storage structure is arranged in the condensation chamber and used for recovering heat released by the condenser; and the fan is arranged in the shell and used for forming convection between the evaporator and the condenser during defrosting. According to the refrigerator, the heat storage structure is arranged, so that waste heat generated by the condenser is stored in the heat storage structure when the refrigerator normally refrigerates, and the evaporator is defrosted by using the heat stored in the heat storage structure, so that the defrosting time of the evaporator is saved, meanwhile, the energy consumed for defrosting is greatly saved, and the refrigerator is more energy-saving and environment-friendly.

Description

Refrigerator adopting recovered hot defrosting
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator adopting recovered hot defrosting.
Background
At present, most of the evaporators of the air-cooled refrigerators have an automatic defrosting function by heating the evaporator by a resistance type heating device such as an electric heating rod, and then removing frost by heat conduction of the evaporator. The method has the following defects: firstly, because the position of the resistance type heating device is fixed, after nearby frost is melted, the refrigerant in the evaporator pipe can be heated while the frost at a slightly distant heating position is heated, so that the temperature in the freezing chamber is increased; secondly, after the electric heating device defrosts, residual water drops after frost is melted still exist on the evaporator in a short time, and when the evaporator refrigerates again, the water drops are quickly cooled again and frosted quickly, and a part of cold energy loss is caused.
In the prior art, a refrigerator is provided, a precooling evaporator is arranged to reduce the frosting amount on a main evaporator, the heat exchange efficiency of the main evaporator is improved, and the energy-saving defrosting system is achieved. And when the defrosting operation is not performed, waste heat generated by the compressor and the condenser cannot be fully utilized.
Disclosure of Invention
The invention discloses a refrigerator adopting recovered hot defrosting, which solves the problem that waste heat of a condenser in the prior art cannot be fully utilized.
The invention discloses a refrigerator, comprising: the defrosting device comprises a shell, wherein an evaporation chamber, a condensation chamber and a defrosting air channel are arranged in the shell, and the evaporation chamber is communicated with the condensation chamber through the defrosting air channel; an evaporator disposed within the evaporation chamber; a condenser disposed within the condensing chamber; the heat storage structure is arranged in the condensation chamber and used for recovering heat released by the condenser; and the fan is arranged in the shell and used for forming convection between the evaporator and the condenser during defrosting.
Furthermore, the defrosting air channel comprises a hot air channel and a cold air channel, two ends of the hot air channel are respectively communicated with the evaporation chamber and the condensation chamber, and two ends of the cold air channel are respectively communicated with the evaporation chamber and the condensation chamber; the evaporation chamber, the condensation chamber, the hot air duct and the cold air duct form a circulating air duct.
Further, the fan is arranged in the condensation chamber, and the position of the fan corresponds to the position of the condenser.
Further, the refrigerator also comprises a first air door, the first air door is arranged in the shell, and the first air door is used for opening or closing the defrosting air channel.
Further, the shell further comprises an air inlet and an air outlet, the air inlet and the air outlet are respectively communicated with the condensation chamber, and second air doors are respectively arranged on the air inlet and the air outlet.
Further, the refrigerator has a defrosting mode and a normal cooling mode; in the defrosting mode, the first air door is opened, and the second air door is closed; in the normal cooling mode, the first damper is closed and the second damper is opened.
Further, the refrigerator further includes: a compressor disposed within the condensation chamber.
Furthermore, the shell also comprises a freezing chamber, a freezing air duct, a refrigerating chamber and a refrigerating air duct, wherein the freezing chamber is communicated with the evaporation chamber through the freezing air duct, and the refrigerating chamber is communicated with the evaporation chamber through the refrigerating air duct; the refrigerator also comprises a third air door, and the third air door is used for controlling the freezing air duct and the refrigerating air duct to be opened or closed.
Further, in the defrosting mode, the third damper is closed; in the normal cooling mode, the third damper is opened.
Further, the refrigerator further includes: and the heating device is arranged in the evaporation chamber and used for heating and defrosting the evaporator.
Further, the heat storage structure comprises a heat storage layer, and the heat storage layer is arranged on the inner wall of the condensation chamber.
Further, the heat storage layer adopts a phase change material.
According to the refrigerator, the heat storage structure is arranged, so that waste heat generated by the condenser during normal refrigeration of the refrigerator is stored in the heat storage structure, when the evaporator needs defrosting, forced convection can be formed through the fan, and the evaporator is defrosted by using the heat stored in the heat storage structure, so that the defrosting time of the evaporator is saved, meanwhile, the energy consumed for defrosting is greatly saved, and the refrigerator is more energy-saving and environment-friendly.
Drawings
FIG. 1 is a schematic structural view of an evaporator according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a refrigerator according to an embodiment of the present invention;
legend: 10. a housing; 11. an evaporation chamber; 12. a condensing chamber; 13. a hot air duct; 14. a cold air duct; 15. an air inlet; 16. an air outlet; 17. a freezing air duct; 18. a refrigeration air duct; 20. an evaporator; 30. a condenser; 40. a heat storage structure; 50. a fan; 60. a first damper; 70. a second damper; 80. a third damper; 90. a compressor.
Detailed Description
The present invention is further illustrated by the following examples, but is not limited to the details of the description.
As shown in fig. 1 and 2, the present invention discloses a refrigerator, including: the shell 10, the evaporator 20, the shell 10, the heat storage structure 40 and the fan 50 are internally provided with an evaporation chamber 11, a condensation chamber 12 and a defrosting air channel, and the evaporation chamber 11 is communicated with the condensation chamber 12 through the defrosting air channel; the evaporator 20 is arranged in the evaporation chamber 11; the condenser 30 is arranged in the condensing chamber 12; the heat storage structure 40 is arranged in the condensation chamber 12 and used for recovering heat released by the condenser 30; a fan 50 is provided in the case 10, and the fan 50 serves to form a convection between the evaporator 20 and the condenser 30 when defrosting. According to the refrigerator, the heat storage structure 40 is arranged, so that waste heat generated by the condenser 30 during normal refrigeration of the refrigerator is stored in the heat storage structure 40, when the evaporator 20 needs defrosting, forced convection can be formed through the fan 50, and the evaporator 20 is defrosted by using the heat stored in the heat storage structure 40, so that the defrosting time of the evaporator is saved, meanwhile, the energy consumed for defrosting is greatly saved, and the refrigerator is more energy-saving and environment-friendly.
It should be noted that, in a normal situation, only in a normal refrigeration state of the refrigerator, the condenser 30 releases heat, and after entering the defrosting mode, the refrigeration system stops working, and at this time, the condenser 30 cannot continuously defrost by heat, so that the heat for defrosting is stored in advance by the heat storage structure 40, and then is defrosted when needed, thereby realizing maximum utilization of waste heat.
In the above embodiment, the defrosting air duct includes the hot air duct 13 and the cold air duct 14, two ends of the hot air duct 13 are respectively communicated with the evaporation chamber 11 and the condensation chamber 12, and two ends of the cold air duct 14 are respectively communicated with the evaporation chamber 11 and the condensation chamber 12; the evaporation chamber 11, the condensation chamber 12, the hot air duct 13 and the cold air duct 14 form a circulating air duct. According to the refrigerator, the evaporation chamber 11, the condensation chamber 12, the hot air duct 13 and the cold air duct 14 form the circulating air duct, so that cold air can be recovered, the heat storage structure 40 can release heat more quickly, and the defrosting effect is improved.
In the above embodiment, the fan 50 is provided in the condensation chamber 12, and the position of the fan 50 corresponds to the position of the condenser 30. According to the refrigerator, the fan 50 is arranged in the condensation chamber 12, and the position of the fan 50 corresponds to the position of the condenser 30, so that the heat dissipation effect of the condenser 30 can be improved, and waste heat generated by the condenser 30 can enter the heat storage structure 40 more quickly.
In the above embodiment, the refrigerator further includes the first damper 60, the first damper 60 being disposed in the case 10, the first damper 60 being used to open or close the defrosting duct. Specifically, two first air doors 60 may be provided, the two first air doors 60 are respectively disposed in the cold air duct 14 and the hot air duct 13, the housing 10 further includes an air inlet 15 and an air outlet 16, the air inlet 15 and the air outlet 16 are respectively communicated with the condensation chamber 12, and the air inlet 15 and the air outlet 16 are respectively provided with a second air door 70. The refrigerator of the invention has a defrosting mode and a normal refrigeration mode; in the defrosting mode, the first damper 60 is opened and the second damper 70 is closed; in the normal cooling mode, the first damper 60 is closed and the second damper 70 is opened. According to the refrigerator, the first air door 60 and the second air door 70 are arranged to switch the flow direction of air, a circulating air duct is formed in a defrosting mode, and the condenser 30 can dissipate heat through the air outlet 16 under the action of the fan 50 in a normal refrigeration mode, so that the refrigeration effect is improved.
In the above embodiment, the refrigerator further includes the compressor 90, and the compressor 90 is disposed in the condensation chamber 12. The compressor 90 is in communication with the condenser 30 and the evaporator 20, and the compressor 90, the condenser 30 and the evaporator 20 are all in the same refrigerant compression cycle. The refrigerator of the present invention can also defrost the evaporator 20 by using the waste heat of the compressor 90 by disposing the compressor 90 in the condensing chamber 12, thereby improving the waste heat utilization rate.
In the above embodiment, the housing 10 further includes a freezing chamber, a freezing air duct 17, a refrigerating chamber and a refrigerating air duct 18, the freezing chamber is communicated with the evaporation chamber 11 through the freezing air duct 17, and the refrigerating chamber is communicated with the evaporation chamber 11 through the refrigerating air duct 18; the refrigerator further includes a third damper 80, and the third damper 80 is used to control the opening and closing of the freezing duct 17 and the refrigerating duct 18. In the defrosting mode, the third damper 80 is closed; in the normal cooling mode, the third damper 80 is opened. According to the refrigerator, the third air door 80 is arranged, so that the third air door 80 can be closed when the refrigerator is in a defrosting mode, hot air is prevented from entering a refrigerating chamber or a freezing chamber, the third air door 80 is opened to be normal when the refrigerator is in a normal refrigerating mode, cold air can enter the refrigerating chamber or the freezing chamber, and therefore the temperature of the refrigerating chamber or the freezing chamber is prevented from rising when defrosting is carried out.
In the above embodiment, the refrigerator further includes a heating device provided in the evaporation chamber 11 for heating and defrosting the evaporator 20. In the defrosting process, the heating device can generate hot rising air flow in the heating process, and the hot rising air flow and the circulating hot air in the circulating air duct defrost the outside of the evaporator 20, so that the heat distribution is uniform, and the heat utilization rate of the heating device is also improved. Defrosting inside and outside simultaneously through cooperating with heating device, the defrosting scope is bigger, and heat distribution is more even, has avoided the condition that the refrigerant intensification that long-time heating leads to and then makes freezer or walk-in intensification. After frosting is melted by heating, can form the droplet and adhere to evaporator fin surface, at this moment, because there is hot gas flow to force the convection current to pass through evaporator 20, so can promote in the short time that the water droplet that remains on evaporator 20 surface evaporates and totally, the cold volume loss of this process of water droplet condensation when having avoided the start-up refrigeration mode once more. The hot air flow is defrosted in the air duct and then the temperature is reduced, and the hot air flow enters the condensing chamber 12 through the cold air return duct to cool the compressor 90 and the condenser 30. Wherein the heating device is preferably a resistance heating rod.
In the above embodiment, the heat storage structure 40 includes the heat storage layer, and the heat storage layer is disposed on the inner wall of the condensation chamber 12. The refrigerator of the present invention can maximize the area of the heat storage layer by disposing the heat storage layer on the inner wall of the condensation chamber 12, thereby increasing the amount of heat stored.
In the above embodiments, the thermal storage layer employs a phase change material. The refrigerator provided by the invention adopts the phase-change material to defrost by utilizing latent heat released by condensation of the phase-change material, so that the defrosting effect is improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.

Claims (12)

1. A refrigerator, characterized by comprising:
the refrigerator comprises a shell (10), wherein an evaporation chamber (11), a condensation chamber (12) and a defrosting air channel are arranged in the shell (10), and the evaporation chamber (11) is communicated with the condensation chamber (12) through the defrosting air channel;
an evaporator (20), the evaporator (20) being disposed within the evaporation chamber (11);
a condenser (30), the condenser (30) being disposed within the condensation chamber (12);
a heat storage structure (40), wherein the heat storage structure (40) is arranged in the condensation chamber (12) and is used for recovering the heat released by the condenser (30);
a fan (50), the fan (50) being disposed within the housing (10), the fan (50) being configured to cause convection between the evaporator (20) and the condenser (30) during defrosting.
2. The refrigerator according to claim 1,
the defrosting air channel comprises a hot air channel (13) and a cold air channel (14), two ends of the hot air channel (13) are respectively communicated with the evaporation chamber (11) and the condensation chamber (12), and two ends of the cold air channel (14) are respectively communicated with the evaporation chamber (11) and the condensation chamber (12);
the evaporation chamber (11), the condensation chamber (12), the hot air duct (13) and the cold air duct (14) form a circulating air duct.
3. The refrigerator according to claim 1 or 2,
the fan (50) is arranged in the condensing chamber (12), and the position of the fan (50) corresponds to the position of the condenser (30).
4. The refrigerator according to claim 1 or 2,
the refrigerator further comprises a first damper (60), wherein the first damper (60) is arranged in the shell (10), and the first damper (60) is used for opening or closing the defrosting air duct.
5. The refrigerator according to claim 4,
the shell (10) further comprises an air inlet (15) and an air outlet (16), the air inlet (15) and the air outlet (16) are respectively communicated with the condensation chamber (12), and second air doors (70) are respectively installed on the air inlet (15) and the air outlet (16).
6. The refrigerator according to claim 5,
the refrigerator is provided with a defrosting mode and a normal refrigerating mode;
in the defrost mode, the first damper (60) is open and the second damper (70) is closed;
in the normal cooling mode, the first damper (60) is closed and the second damper (70) is open.
7. The refrigerator according to claim 1, further comprising:
a compressor (90), the compressor (90) disposed within the condensing chamber (12).
8. The refrigerator according to claim 6,
the shell (10) further comprises a freezing chamber, a freezing air duct (17), a refrigerating chamber and a refrigerating air duct (18), wherein the freezing chamber is communicated with the evaporation chamber (11) through the freezing air duct (17), and the refrigerating chamber is communicated with the evaporation chamber (11) through the refrigerating air duct (18);
the refrigerator also comprises a third air door (80), and the third air door (80) is used for controlling the freezing air duct (17) and the refrigerating air duct (18) to be opened or closed.
9. The refrigerator according to claim 8,
in the defrost mode, the third damper (80) is closed;
in the normal cooling mode, the third damper (80) is opened.
10. The refrigerator according to claim 1, further comprising:
the heating device is arranged in the evaporation chamber (11) and is used for heating and defrosting the evaporator (20).
11. The refrigerator according to claim 1,
the heat storage structure (40) comprises a heat storage layer, and the heat storage layer is arranged on the inner wall of the condensation chamber (12).
12. The refrigerator according to claim 11,
the heat storage layer is made of phase-change materials.
CN202010930271.2A 2020-09-07 2020-09-07 Refrigerator adopting recovered hot defrosting Pending CN112066619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010930271.2A CN112066619A (en) 2020-09-07 2020-09-07 Refrigerator adopting recovered hot defrosting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010930271.2A CN112066619A (en) 2020-09-07 2020-09-07 Refrigerator adopting recovered hot defrosting

Publications (1)

Publication Number Publication Date
CN112066619A true CN112066619A (en) 2020-12-11

Family

ID=73663938

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010930271.2A Pending CN112066619A (en) 2020-09-07 2020-09-07 Refrigerator adopting recovered hot defrosting

Country Status (1)

Country Link
CN (1) CN112066619A (en)

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