CN107461987B - Air-cooled refrigerator with energy-saving air duct and working method thereof - Google Patents
Air-cooled refrigerator with energy-saving air duct and working method thereof Download PDFInfo
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- CN107461987B CN107461987B CN201710668403.7A CN201710668403A CN107461987B CN 107461987 B CN107461987 B CN 107461987B CN 201710668403 A CN201710668403 A CN 201710668403A CN 107461987 B CN107461987 B CN 107461987B
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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
- F25D11/006—Self-contained movable devices, e.g. domestic refrigerators with cold storage accumulators
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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
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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
- 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
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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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)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses an air-cooled refrigerator with an energy-saving air duct, which comprises a shell and an inner container, wherein the inner container is arranged in the shell, and a heat-insulating filling layer is arranged between the inner container and the shell. The upper part of the inner container is provided with a refrigerating chamber, the lower part of the inner container is provided with a freezing chamber, and the freezing chamber is positioned below the refrigerating chamber. The back side of the freezing chamber is provided with a cold air cavity for installing an evaporator and a fan. The evaporator is arranged at the lower part of the cold air cavity, and the fan is arranged at the middle part of the cold air cavity. The upper part of the cold air cavity is communicated with the refrigerating chamber through a first air supply pipe, the refrigerating chamber is communicated with the lower part of the cold air cavity through a first return air pipe, and a cold accumulation device is arranged on the inner side of the first return air pipe. The invention also discloses a working method of the air-cooled refrigerator with the energy-saving air duct. The invention has reasonable structural design, low manufacturing cost and strong practicability, can reduce the heat load of the refrigerating chamber and the temperature changing chamber, and improves the energy efficiency of the air-cooled refrigerator.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an air-cooled refrigerator with an energy-saving air duct and a working method thereof.
Background
The existing multi-temperature-area air-cooled refrigerators all adopt an air duct type return air structure, are connected with a freezing chamber, a refrigerating chamber or a temperature changing chamber, and control the temperature in the freezing chamber, the refrigerating chamber or the temperature changing chamber through an air door arranged on an air inlet duct. Under the refrigeration working condition, the fan blows cold air formed outside the evaporator into the freezing chamber, the refrigerating chamber or the temperature changing chamber through the air inlet pipes respectively connected with the fan, meanwhile, gases in the freezing chamber, the refrigerating chamber or the temperature changing chamber flow back to the outside of the evaporator through the return air pipes respectively connected with the fan for cooling, and then the cooled air is blown into the freezing chamber, the refrigerating chamber or the temperature changing chamber through the fan to form continuous circulating cold air in the freezing chamber, the refrigerating chamber or the temperature changing chamber. When the defrosting working condition is started, heat generated by the heating wire generates damp-heat gas for defrosting the evaporator, meanwhile, the damp-heat gas is driven by the pressure difference of the cool-heat gas, and the hot-damp air flow rises to enter the refrigerating chamber and the temperature changing chamber, so that the temperatures of the refrigerating chamber and the temperature changing chamber rise, and the heat load is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an air-cooled refrigerator with an energy-saving air duct, which aims to solve the problem that high-temperature and high-humidity air generated by defrosting an evaporator enters a refrigerating chamber and a temperature changing chamber to cause the increase of heat load of the refrigerating chamber and the temperature changing chamber to cause the increase of energy consumption.
In order to achieve the above purpose, the technical solution adopted by the invention is as follows:
an air-cooled refrigerator with an energy-saving air duct comprises a shell and an inner container, wherein the inner container is arranged in the shell, and a heat-insulating filling layer is arranged between the outer wall of the inner container and the inner wall of the shell. The upper part of the inner container is provided with a refrigerating chamber, the lower part of the inner container is provided with a freezing chamber, and the freezing chamber is positioned below the refrigerating chamber. A cold air cavity for installing an evaporator and a fan is arranged at the rear side of the freezing chamber. The evaporator is arranged at the lower part of the cold air cavity, and the fan is arranged at the middle part of the cold air cavity. The upper part of the cold air cavity is communicated with the refrigerating chamber through a first air supply pipe, the refrigerating chamber is communicated with the lower part of the cold air cavity through a first return air pipe, and a cold accumulation device is arranged on the inner side of the first return air pipe.
Preferably, the inner container is also provided with a temperature changing chamber, and the temperature changing chamber is positioned between the refrigerating chamber and the freezing chamber; the upper part of the cold air cavity is communicated with the temperature changing chamber through a second air supply pipe, and the temperature changing chamber is communicated with the lower part of the cold air cavity through a second air return pipe; the inner side of the second return air pipe is provided with a cold accumulation device which is the same as the inner side of the first return air pipe.
Preferably, the first air supply pipe, the second air supply pipe, the first air return pipe and the second air return pipe are buried in the heat insulation filling layer, and air doors are arranged in the first air supply pipe and the second air supply pipe.
Preferably, the cold accumulation device comprises two cold accumulation mounting plates made of cold accumulation materials, and the two cold accumulation mounting plates are oppositely arranged on the inner wall of the corresponding air return pipe. The outer arc surface of each cold accumulation mounting plate is fixedly attached to the inner wall of the first air return pipe or the second air return pipe.
Preferably, the housing is located inside the rear side of the freezing chamber, and has a compressor chamber in which a compressor is placed, the compressor being connected to the evaporator through a pipe. The evaporator is provided with an electric heater which is controlled by a singlechip controller.
Another object of the present invention is to provide a method for operating an air-cooled refrigerator.
The working method of the air-cooled refrigerator is suitable for the air-cooled refrigerator, in the working state of the evaporator, the air doors in the first air supply pipe and the second air supply pipe are opened, the fan continuously blows cold air in the cold air cavity into the refrigerating chamber and the temperature changing chamber, meanwhile, air in the refrigerating chamber and the temperature changing chamber flows back into the cold air cavity, and the cold storage mounting plate on the inner wall of the first air return pipe or the second air return pipe is reduced to a low temperature state. After the evaporator stops working, the air doors in the first air supply pipe and the second air supply pipe are closed. The electric heater is started to heat and defrost the evaporator, hot and humid air in the cold air cavity enters the first return air pipe and the second return air pipe, and the cold storage mounting plates of the inner walls of the first return air pipe and the second return air pipe in a low-temperature state absorb the heat of the hot and humid air, so that the temperature of the hot and humid air is reduced.
By adopting the technical scheme, the invention has the beneficial technical effects that: the cold accumulation device is arranged on the inner walls of the first return air pipe and the second return air pipe which are respectively corresponding to the refrigerating chamber and the temperature changing chamber, and is used for releasing heat and absorbing heat, absorbing heat of rising hot and humid gas, reducing the temperature of the hot and humid gas and greatly reducing the influence of the gas entering the refrigerating chamber and the temperature changing chamber on the temperature of each chamber. The temperature balance of each compartment is quickened when the machine is started next time, the temperature fluctuation of the compartment is reduced, and the aim of high-efficiency refrigeration is achieved. The invention has reasonable structural design, low manufacturing cost and strong practicability, can reduce the heat load of the refrigerating chamber and the temperature changing chamber, and improves the energy efficiency of the air-cooled refrigerator.
Drawings
Fig. 1 is a schematic structural diagram of an air-cooled refrigerator with an energy-saving air duct.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
embodiment 1, with reference to fig. 1, an air-cooled refrigerator with an energy-saving air duct comprises a casing 1 and an inner container 2, wherein the inner container 2 is fixedly arranged in the casing 1, and a heat-insulating filling layer 3 is filled between the outer wall of the inner container 2 and the inner wall of the casing 1. The upper part of the liner 2 is provided with a refrigerating chamber 21, the lower part thereof is provided with a freezing chamber 23, the liner 2 is also provided with a temperature changing chamber 22, the refrigerating chamber 21, the temperature changing chamber 22 and the freezing chamber 23 are sequentially arranged from top to bottom, and the front sides are all of an open structure. Located at the rear side of the freezing chamber, a cool air chamber 4 for installing an evaporator 8 and a blower 9 is provided. The fan 9 is arranged in the middle of the cold air cavity 4, the cold air cavity is divided into an upper part and a lower part, the evaporator 8 is arranged in the part below the cold air cavity 4, and part of gas below the cold air cavity 4 continuously enters the part above the cold air cavity under the action of the fan 9 under the refrigeration working condition.
The upper part of the cold air cavity 4 is connected and communicated with the cold air cavity 21 through a first air supply pipe 31, the cold air cavity 21 is connected and communicated with the lower part of the cold air cavity 4 through a first air return pipe 32, cold air generated at the upper part of the cold air cavity 4 is blown into the cold air cavity 21 through the first air supply pipe 31, air in the cold air cavity 21 flows back to the lower part of the cold air cavity 4 through the first air return pipe 32, and is blown into the cold air cavity 21 again after being cooled by the evaporator 8, and the continuous circulation is realized. The upper part of the cold air cavity 4 is communicated with the temperature changing chamber 22 through a second air supply pipe 33, the temperature changing chamber 22 is communicated with the lower part of the cold air cavity 4 through a second air return pipe 24, and the air circulation mode between the temperature changing chamber 22 and the cold air cavity 4 is the same as the air circulation mode between the refrigerating chamber 21 and the cold air cavity 4. The first air supply pipe 31, the second air supply pipe 33, the first air return pipe 32 and the second air return pipe 34 are buried in the heat insulation filling layer 3, and the air doors 35 are arranged in the first air supply pipe 31 and the second air supply pipe 33. In the cooling condition, the amount of cold air entering the refrigerating chamber 21 and the temperature changing chamber 22 is regulated by the air door 35, and after the cooling condition is finished, the air doors 35 arranged in the first air supply pipe 31 and the second air supply pipe 33 are closed.
The cold accumulation devices 5 are arranged on the outer sides of the first air return pipe 32 and the second air return pipe 34. The cold accumulation device 5 comprises two cold accumulation mounting plates 51 made of cold accumulation materials, and the two cold accumulation mounting plates 51 are oppositely arranged on the inner wall of the corresponding return air pipe. The outer arc surface of each cold accumulation mounting plate 51 is fixedly attached to the inner wall of the first return air pipe 32 or the second return air pipe 34. Under the refrigeration working condition, the cold accumulation device 5 arranged outside the first return air pipe 32 and the second return air pipe 34 absorbs the temperature of the corresponding return air pipe and is in a low-temperature state.
The housing 1 is located inside the rear side of the freezing chamber 23 and has a compressor chamber in which a compressor 6 is placed, and the compressor 6 is connected to an evaporator 8 through a pipe. The evaporator 8 is provided with an electric heater 7, the electric heater 7 is controlled by a singlechip controller, and under defrosting working conditions, the electric heater 7 heats the evaporator 8 to form hot and humid gas, and the hot and humid gas is prevented from entering the refrigerating chamber 21 and the temperature changing chamber 22 by an air door 35 in the first air supply pipe 31 and the second air supply pipe 33. The cold storage device 5 in a low temperature state absorbs the temperature of the hot and humid air in the first return air pipe 32 or the second return air pipe 34, reduces the temperature of the hot and humid air, and prevents the hot and humid air from entering the refrigerating chamber 21 and the temperature changing chamber 22.
In embodiment 2, referring to fig. 1, a working method of an air-cooled refrigerator is suitable for the air-cooled refrigerator, in which, when the evaporator 8 is in a working state, the air doors 35 in the first air supply pipe 31 and the second air supply pipe 33 are opened, the fan 9 continuously blows the cold air in the cold air chamber 4 into the refrigerating chamber 21 and the temperature changing chamber 22, and simultaneously, the air in the refrigerating chamber 21 and the temperature changing chamber 22 flows back to the lower part of the cold air chamber 4 through the first air return pipe 32 or the second air return pipe 34 respectively, and is blown into the refrigerating chamber 21 and the temperature changing chamber 22 by the fan 9 after being cooled by the evaporator 8. Under the refrigeration working condition, the cold accumulation mounting plate 51 positioned on the inner wall of the first return air pipe 32 or the second return air pipe 34 reduces the temperature of the air absorbed by the first return air pipe 32 or the second return air pipe 34 to a low temperature state, and continuously maintains the low temperature state.
After the evaporator 8 stops working, the air doors 35 in the first air supply pipe 31 and the second air supply pipe 33 are closed, and the air flow among the refrigerating chamber 21, the temperature changing chamber 22 and the cold air chamber 4 is stopped. Under defrosting working conditions, the electric heater 7 is started to heat and defrost the evaporator 8, and damp and hot gas is generated in the cold air cavity and flows to the refrigerating chamber 21 and the temperature changing chamber 22 due to pressure difference between the refrigerating chamber 21 and the temperature changing chamber 22 and the cold air cavity 4. The damper 35 in the first air supply duct 31 and the second air supply duct 33 prevents the hot and humid air from flowing into the refrigerating chamber 21 and the temperature changing chamber 22. The hot and humid air enters the first return air pipe 32 and the second return air pipe 34, and the cold accumulation mounting plate 51 in a low temperature state absorbs the heat of the hot and humid air in the first return air pipe 32 and the second return air pipe 34 to reduce the temperature. After the wet and hot air is cooled, the difference of the internal pressure of each air return pipe is reduced, the rising speed of the hot and wet air is slowed down, the influence of the air entering the refrigerating chamber 21 and the temperature changing chamber 22 on the temperatures in the refrigerating chamber 21 and the temperature changing chamber 22 is reduced, the heat load of the refrigerating chamber 21 and the temperature changing chamber 22 is reduced, and the energy efficiency of the air-cooled refrigerator is improved.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that the invention is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the invention.
Claims (6)
1. The air-cooled refrigerator with the energy-saving air duct comprises a shell and an inner container, and is characterized in that the inner container is arranged in the shell, and a heat-insulating filling layer is arranged between the outer wall of the inner container and the inner wall of the shell; the upper part of the inner container is provided with a refrigerating chamber, the lower part of the inner container is provided with a freezing chamber, and the freezing chamber is positioned below the refrigerating chamber; a cold air cavity for installing an evaporator and a fan is arranged at the rear side of the freezing chamber; the evaporator is arranged at the lower part of the cold air cavity, and the fan is arranged at the middle part of the cold air cavity; the upper part of the cold air cavity is communicated with the refrigerating chamber through a first air supply pipe, the refrigerating chamber is communicated with the lower part of the cold air cavity through a first return air pipe, and a cold accumulation device is arranged on the inner side of the first return air pipe.
2. The air-cooled refrigerator with an energy-saving air duct of claim 1, wherein the inner container further comprises a temperature changing chamber, and the temperature changing chamber is positioned between the refrigerating chamber and the freezing chamber; the upper part of the cold air cavity is communicated with the temperature changing chamber through a second air supply pipe, and the temperature changing chamber is communicated with the lower part of the cold air cavity through a second air return pipe; the inner side of the second return air pipe is provided with a cold accumulation device which is the same as the inner side of the first return air pipe.
3. The air-cooled refrigerator with the energy-saving air duct according to claim 1, wherein the first air supply duct, the second air supply duct, the first air return duct and the second air return duct are buried in the heat insulation filling layer, and air doors are arranged in the first air supply duct and the second air supply duct.
4. The air-cooled refrigerator with an energy-saving air duct according to claim 2, wherein the cold accumulation device comprises two cold accumulation mounting plates made of cold accumulation materials, and the two cold accumulation mounting plates are oppositely arranged on the inner wall of the corresponding return air pipe; the outer arc surface of each cold accumulation mounting plate is fixedly attached to the inner wall of the first air return pipe or the second air return pipe.
5. The air-cooled refrigerator with an energy-saving air duct of claim 1, wherein the housing is located inside the rear side of the freezer compartment, has a compressor chamber in which a compressor is placed, and the compressor is connected to the evaporator through a pipe; the evaporator is provided with an electric heater which is controlled by a singlechip controller.
6. The working method of the air-cooled refrigerator is suitable for the air-cooled refrigerator according to any one of claims 1 to 5, and is characterized in that in the working state of the evaporator, air doors in a first air supply pipe and a second air supply pipe are opened, cold air in a cold air cavity is continuously blown into a refrigerating chamber and a temperature changing chamber by a fan, meanwhile, air in the refrigerating chamber and the temperature changing chamber flows back into the cold air cavity, and a cold storage mounting plate on the inner wall of the first air return pipe or the second air return pipe is reduced to a low temperature state; after the evaporator stops working, air doors in the first air supply pipe and the second air supply pipe are closed; the electric heater is started to heat and defrost the evaporator, hot and humid air in the cold air cavity enters the first return air pipe and the second return air pipe, and the cold storage mounting plates of the inner walls of the first return air pipe and the second return air pipe in a low-temperature state absorb the heat of the hot and humid air, so that the temperature of the hot and humid air is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710668403.7A CN107461987B (en) | 2017-08-08 | 2017-08-08 | Air-cooled refrigerator with energy-saving air duct and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710668403.7A CN107461987B (en) | 2017-08-08 | 2017-08-08 | Air-cooled refrigerator with energy-saving air duct and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107461987A CN107461987A (en) | 2017-12-12 |
| CN107461987B true CN107461987B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710668403.7A Active CN107461987B (en) | 2017-08-08 | 2017-08-08 | Air-cooled refrigerator with energy-saving air duct and working method thereof |
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| Country | Link |
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| CN (1) | CN107461987B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344230A (en) * | 2017-12-23 | 2018-07-31 | 青岛海尔股份有限公司 | Anti-condensation refrigerator and its operation method |
| CN108344224A (en) * | 2017-12-23 | 2018-07-31 | 青岛海尔股份有限公司 | Refrigerator and its operation method |
| CN109373670B (en) * | 2018-11-05 | 2021-10-29 | 海尔智家股份有限公司 | Refrigerator with a door |
| JP2020101295A (en) * | 2018-12-19 | 2020-07-02 | アクア株式会社 | refrigerator |
| CN111609625A (en) * | 2019-02-26 | 2020-09-01 | 青岛海尔电冰箱有限公司 | Refrigerator with a door |
| CN111288721A (en) * | 2020-03-17 | 2020-06-16 | 广东奥马冰箱有限公司 | Air circulation system is sent back to refrigerator multi-temperature-zone |
| CN111578595A (en) * | 2020-05-25 | 2020-08-25 | 珠海格力电器股份有限公司 | Super-ice-temperature refrigerator and food fresh-keeping method |
| CN114440518B (en) * | 2020-10-30 | 2023-10-24 | 青岛海尔电冰箱有限公司 | Refrigerator and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016026240A1 (en) * | 2014-08-21 | 2016-02-25 | 海信（山东）冰箱有限公司 | Control method and device for air-cooled refrigerator, and air-cooled refrigerator |
| CN106322883A (en) * | 2016-08-19 | 2017-01-11 | 海信容声(广东)冰箱有限公司 | Air-cooled refrigerator and control method thereof |
| CN207113360U (en) * | 2017-08-08 | 2018-03-16 | 澳柯玛股份有限公司 | A kind of wind cooling refrigerator with energy saving air duct |
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2017
- 2017-08-08 CN CN201710668403.7A patent/CN107461987B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016026240A1 (en) * | 2014-08-21 | 2016-02-25 | 海信（山东）冰箱有限公司 | Control method and device for air-cooled refrigerator, and air-cooled refrigerator |
| CN106322883A (en) * | 2016-08-19 | 2017-01-11 | 海信容声(广东)冰箱有限公司 | Air-cooled refrigerator and control method thereof |
| CN207113360U (en) * | 2017-08-08 | 2018-03-16 | 澳柯玛股份有限公司 | A kind of wind cooling refrigerator with energy saving air duct |
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| CN107461987A (en) | 2017-12-12 |
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