CN112595005A - Novel defrosting structure of air-cooled refrigerator and using method thereof - Google Patents
Novel defrosting structure of air-cooled refrigerator and using method thereof Download PDFInfo
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- CN112595005A CN112595005A CN202011288130.1A CN202011288130A CN112595005A CN 112595005 A CN112595005 A CN 112595005A CN 202011288130 A CN202011288130 A CN 202011288130A CN 112595005 A CN112595005 A CN 112595005A
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- defrosting
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/008—Defroster control by timer
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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
- F25D2600/00—Control issues
- F25D2600/02—Timing
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
Abstract
The invention provides a novel defrosting structure of an air-cooled refrigerator, which comprises a refrigerating chamber and a freezing chamber, wherein the refrigerating chamber is positioned at the upper side of the freezing chamber, and a refrigerating return air inlet and a refrigerating air door are arranged on the refrigerating chamber; the freezing chamber outside be equipped with the return air duct export, freezing fan and freezing evaporimeter are equipped with to the freezing chamber inside, freezing evaporimeter both sides be equipped with and be used for surveying freezing evaporimeter temperature and the defrosting sensor and the defrosting heater of being connected with the refrigerator controller, freezing evaporimeter on be equipped with the return air inlet heater corresponding with the return air duct export. The invention also provides a use method of the novel defrosting structure of the air-cooled refrigerator, which effectively solves the problem of difficult cleaning of defrosting pain points, and simultaneously combines the work of a defrosting heater and the defrosting of return air to reduce the defrosting time.
Description
Technical Field
The invention belongs to the technical field of refrigerators, and particularly relates to a novel defrosting structure of an air-cooled refrigerator and a using method of the defrosting structure.
Background
With the continuous and rapid development of social economy and the change of the living quality and consumption concept of residents, the air-cooled refrigerator has the advantages that the design and development technical capability tends to be perfect, the air-cooled refrigerator can automatically defrost, food is not easy to freeze, the refrigerating speed is high, the fresh-keeping effect is good, and the like, and the air-cooled refrigerator is increasingly popular with consumers.
At present, an air-cooled refrigerator defrosting mode mainly takes electric heating as a main mode and refrigeration return air defrosting as an auxiliary mode, a defrosting heater is generally arranged at the bottom of a freezing evaporator, a refrigeration return air inlet is arranged at the rear part of the evaporator, the position of the refrigeration return air inlet is generally arranged at the lower part of a fan cover, an evaporator inlet pipe is arranged at the upper part of a freezing chamber, so that the phenomenon of uneven frosting of the refrigerator exists in the frosting process, and a frost layer generated on the outer layer of the freezing evaporator gradually diffuses defrosting from the bottom to the outside in a fan-shaped state along with heat radiation of the heater during defrosting of the refrigerator.
But the phenomenon that the defrosting is not clean easily appears on the upper portion of the evaporator and the horizontal inlet and outlet pipe of the evaporator in the actual operation process, the refrigeration effect of the refrigerator can be influenced by gradual accumulation of the situation, the uncooled phenomenon can be seriously caused, the common problem is solved by increasing the power of the heater, prolonging the working time of the heater, increasing the refrigerating return air defrosting and dripping water after defrosting, and the like, but the secondary problems that the safety is influenced by high surface temperature and long working time of the heater, the power consumption of the refrigerator is increased, the temperature of the refrigerating chamber rises again during defrosting, and the food quality is influenced are caused.
Disclosure of Invention
The invention aims at the defects in the prior art, and provides a novel defrosting structure of an air-cooled refrigerator, wherein the thicker or even frozen frost layer of an inlet pipe of an evaporator is preferably defrosted completely when a defrosting heater works through changing the direction of the inlet and outlet pipelines of the evaporator, so that the problems that the defrosting at a local position is not clean due to short heating time and low temperature when the heat of the original heater is radiated to the inlet pipe position of the evaporator are solved.
The invention also provides a use method of the novel defrosting structure of the air-cooled refrigerator, which effectively solves the problem of difficult cleaning of defrosting pain points, and simultaneously combines the working of a defrosting heater and the defrosting of return air, thereby reducing the defrosting time, reducing the temperature rise of a freezing chamber and the first starting working time after defrosting, further realizing the effects of cleaning of defrosting of the refrigerator, low power consumption in defrosting and recovery periods, reducing the power consumption of the refrigerator, improving the energy efficiency grade and increasing the market competitiveness of products.
The invention is realized by the following technical scheme:
the utility model provides a novel air-cooled refrigerator defrosting structure, includes walk-in and freezer, the walk-in be located the freezer upside, the walk-in on be equipped with cold-stored return air inlet and cold-stored air door.
The freezing chamber outside be equipped with the return air duct export, freezing fan and freezing evaporimeter are equipped with to the freezing chamber inside, freezing evaporimeter both sides be equipped with and be used for surveying freezing evaporimeter temperature and the defrosting sensor and the defrosting heater of being connected with the refrigerator controller, freezing evaporimeter on be equipped with the return air inlet heater corresponding with the return air duct export.
Preferably, the refrigerating chamber and the freezing chamber are double air return ducts, and two refrigerating air return inlets and two air return duct outlets are arranged and symmetrically distributed.
Preferably, the defrosting sensor is positioned at the upper side of the defrosting heater, and the freezing fan is positioned at the upper side of the freezing evaporator.
Preferably, the lower inlet pipe of the freezing evaporator is positioned at the upper side of the defrosting heater.
Preferably, the refrigeration evaporator is of a coil structure, and the return air inlet heater is positioned at an elbow of the refrigeration evaporator.
A method for using a defrosting structure of a novel air-cooled refrigerator comprises the following steps,
step 1, starting a refrigerator to run until defrosting running conditions are met;
and 5, normally operating the refrigerator.
Preferably, in the step 1, whether the defrosting operation condition is reached is judged according to the accumulated compressor operation and power-on time when the refrigerator is normally operated.
Preferably, the first heating structure in step 2 further comprises a refrigerating air door, a refrigerating air return opening, a freezing fan and an air return duct outlet, wherein the refrigerating air return opening and the refrigerating air door are located on the refrigerating chamber; the air return channel outlet, the freezing fan and the air return inlet heater are positioned on the freezing chamber.
Preferably, two groups of refrigerating return air inlets, return air duct outlets and return air inlet heaters are arranged in the first heating mechanism, and the two groups of return air inlet heaters heat when the first heating mechanism works in the step 2.
Preferably, the normal operation of the refrigerator in the step 5 includes a first starting operation stage of the refrigerator and a normal refrigerating operation stage of the refrigerator.
The invention has the advantages that:
according to the invention, the refrigerating return air inlet, the return air duct outlet and the return air inlet heater are arranged, so that thick even frozen frost at the inlet pipe of the evaporator is preferentially layered and cleaned when the defrosting heater works, and the problems that when the heat of the original heater is radiated to the inlet pipe position of the evaporator, the heating time is short and the temperature is low, so that the defrosting at the local position is not clean are solved.
According to the invention, the position of the refrigeration air return channel structure is changed, the auxiliary heater is additionally arranged, air return defrosting is carried out before defrosting is started, the freezing fan and the air return inlet heater are started, auxiliary defrosting is carried out on the upper area of the evaporator with weaker heat radiation of the defrosting heater in advance, and the defrosting effect of the heater is combined, so that the problem that defrosting is not clean at the upper part of the evaporator is solved.
The invention realizes uniform defrosting, the upper part and the corner area of the evaporator are positioned at the position with weaker heat radiation area, and the defrosting layer can be effectively cleaned when the defrosting heater works, thereby reducing the working time of the defrosting heater, reducing the energy consumption and the temperature rise of the freezing chamber during defrosting and further reducing the power consumption of the refrigerator.
According to the invention, through the design of auxiliary heating of the air return inlet, the function of auxiliary heating of the air return inlet can be realized, and the phenomenon that the outlet of the air return channel is frozen due to the fact that the outlet of the air return channel is close to the freezing evaporator, the temperature is low and the outlet is located at a cold-hot alternating position is prevented.
The invention utilizes the refrigeration principle of the refrigerator evaporator, the specific frosting position of the evaporator and the thickness of a frost layer to automatically judge the defrosting time, adopts the sequence of return air defrosting, defrosting by a defrosting heater and evaporator dripping for the defrosting work of the refrigerator, improves the matching degree among all working procedures, realizes effective defrosting and saves energy consumption.
The invention changes the evaporator inlet pipe from the bottom close to the heater to the mode of gradually ascending in a coil pipe form, combines the structure with double air return ports and the heater, effectively solves the pain point position where defrosting is difficult to be cleaned, and simultaneously combines the work of the defrosting heater and the work of air return defrosting, thereby reducing defrosting time, reducing the working time of first starting after the temperature of the freezing chamber rises back and defrosting, further realizing the effects of cleaning the refrigerator defrosting, defrosting and low power consumption in the recovery period, reducing the power consumption of the refrigerator, improving the energy efficiency grade and increasing the market competitiveness of products.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a flow chart of the present invention.
In the figure, 1. a refrigerating chamber; 2. a freezing chamber; 3. refrigerating an air return opening; 4. a refrigeration damper; 5. an outlet of the return air duct; 6. a freezing fan; 7. a refrigeration evaporator; 8. a defrosting sensor; 9. a defrosting heater; 10. and an air return port heater.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A novel defrosting structure of an air-cooled refrigerator is shown in figure 1 and comprises a refrigerating chamber 1 and a freezing chamber 2, wherein the refrigerating chamber 1 is positioned on the upper side of the freezing chamber 2, a refrigerating return air inlet 3 and a refrigerating air door 4 are arranged on the refrigerating chamber 1, and the refrigerating air door 4 is used for opening to enable cold air in the freezing chamber 2 to enter the refrigerating chamber 1; the refrigerating chamber 2 outside be equipped with return air duct export 5, cold-stored return air inlet 3 and cold-stored air door 4 are corresponding with return air duct export 5, walk-in 1 and refrigerating chamber 2 be two return air ducts, cold-stored return air inlet 3 all sets up two with return air duct export 5, and the symmetric distribution. Through setting up the structure of two sets of symmetries, can advance a tub department both sides to the refrigeration evaporimeter 7 and heat respectively, increased the heating position promptly for the heat radiation is even, is favorable to changing the frost in advance.
As shown in fig. 1, a freezing fan 6 and a freezing evaporator 7 are arranged in the freezing chamber 2, and the freezing fan 6 is positioned on the upper side of the freezing evaporator 7. The position is reasonable in design, and defrosting operation in advance can be conveniently carried out through the components such as the return air inlet heater 10. Freezing evaporimeter 7 both sides be equipped with the sensor 8 that changes frost and change frost heater 9, the sensor 8 that changes frost be located the upside of change frost heater 9, freezing evaporimeter 7 lower part advance the pipe and be located the upside of change frost heater 9. The defrosting sensor 8 is used for detecting the temperature of the freezing evaporator 7 and transmitting the temperature to the refrigerator controller, and the refrigerator controller performs judgment and analysis according to the received signal and sends an instruction to the defrosting heater 9 so as to perform operation.
As shown in fig. 1, the freezing evaporator 7 is provided with a return air inlet heater 10 corresponding to the return air duct outlet 5. The freezing evaporator 7 is of a coil structure, an inlet pipe of the freezing evaporator 7 is positioned at the upper part of the freezing chamber 2, and an outlet pipe 2 of the freezing evaporator is positioned at the lower part of the freezing chamber 2. The return air inlet heater 10 is positioned at the elbow of the refrigeration evaporator 7. The arrangement of the position is beneficial to increasing the area of the return air inlet heater 10 radiating to the refrigeration evaporator 7 when heating, and improving the defrosting effect.
When the defrosting device is used, the defrosting heater 9 is positioned at the bottom of the freezing evaporator 7, the pipeline of the freezing evaporator 7 is designed to be a coil pipe from an inlet below the freezing chamber 2 and upwards layer by layer, the refrigerating chamber 1 is connected with the freezing chamber 2 to design double air return channels (with the sizes of 4cm x 10cm respectively), the air return inlet heaters 10 are respectively designed around the positions of the air return channel outlet 5 (positioned at the rear part of the freezing evaporator 7 and with the sizes of 10cm x 4cm respectively) of the freezing chamber 2, and the two air return inlet heaters 10 are respectively positioned at the two sides of the upper part of the freezing evaporator 7.
When the refrigerator enters a defrosting system to operate, the refrigerator firstly enters the air return port heaters 10 to be heated and defrosted, at the moment, the freezing fan 6 is started, the two air return port heaters 10 work simultaneously, and the frost layer of the freezing evaporator 7 at the position corresponding to the air return port heaters 10 is heated and thawed in advance in an auxiliary manner.
When the refrigerator enters a defrosting state by the defrosting heater 9, the heat radiation of the defrosting heater 9 preferentially melts the lower pipe inlet position with thicker frost in the freezing evaporator 7 because the pipe inlet of the freezing evaporator 7 is close to the lower part, and then melts the frost on the upper part of the freezing evaporator 7.
The return air defrosting effect is achieved, the frost layer of the upper freezing evaporator 7 can be quickly melted, the defrosting sensor 8 measures the temperature of the freezing evaporator 7 and then transmits the temperature to the controller of the refrigerator, the controller of the refrigerator analyzes the temperature according to the signal, and if defrosting operation is completed, the defrosting heater 9 is controlled to stop heating, so that the working time of the defrosting heater 9 is shortened, and the defrosting effect is improved.
Example 2
As shown in fig. 1, a novel air-cooled refrigerator defrosting structure, including walk-in 1 and freezer 2, walk-in 1 be located 2 upsides of freezer, walk-in 1 on be equipped with cold-stored return air inlet 3 and cold-stored air door 4, 2 outsides of freezer be equipped with return air duct export 5, cold-stored return air inlet 3 and cold-stored air door 4 are corresponding with return air duct export 5.
As shown in fig. 1, the refrigerating chamber 1 and the freezing chamber 2 are double air return ducts, and two refrigerating air return inlets 3 and two air return duct outlets 5 are symmetrically distributed. Through setting up the structure of two sets of symmetries, can advance a tub department both sides to the refrigeration evaporimeter 7 and heat respectively, increased the heating position promptly for the heat radiation is even, is favorable to changing the frost in advance.
As shown in fig. 1, a freezing fan 6 and a freezing evaporator 7 are arranged in the freezing chamber 2, and the freezing fan 6 is positioned on the upper side of the freezing evaporator 7. The position is reasonable in design, and defrosting operation in advance can be conveniently carried out through the components such as the return air inlet heater 10.
As shown in fig. 1, a defrosting sensor 8 and a defrosting heater 9 are arranged on two sides of the freezing evaporator 7, the defrosting sensor 8 is positioned on the upper side of the defrosting heater 9, and the lower inlet pipe of the freezing evaporator 7 is positioned on the upper side of the defrosting heater 9. The defrosting sensor 8 is used for detecting the temperature of the freezing evaporator 7 and transmitting the temperature to the refrigerator controller, and the refrigerator controller performs judgment and analysis according to the received signal and sends an instruction to the defrosting heater 9 so as to perform operation.
As shown in fig. 1, the freezing evaporator 7 is provided with a return air inlet heater 10 corresponding to the return air duct outlet 5. The freezing evaporator 7 is of a coil structure, an inlet pipe of the freezing evaporator 7 is positioned at the upper part of the freezing chamber 2, and an outlet pipe 2 of the freezing evaporator is positioned at the lower part of the freezing chamber 2. The return air inlet heater 10 is positioned at the elbow of the refrigeration evaporator 7. The arrangement of the position of the air return port heater 10 is beneficial to increasing the area of the refrigerating evaporator 7 irradiated by the air return port heater 10 when heating, and improving the defrosting effect.
On the basis, the using method of the defrosting structure of the air-cooled refrigerator comprises the following steps,
step 1, starting a refrigerator to run until defrosting running conditions are met;
and 5, normally operating the refrigerator.
And in the step 1, whether the defrosting operation condition is met or not is judged according to the accumulated running time and the power-on time of the compressor during the normal running of the refrigerator.
The first heating structure in the step 2 further comprises a refrigerating air door 4, a refrigerating air return opening 3, a freezing fan 6 and an air return passage outlet 5, wherein the refrigerating air return opening 3 and the refrigerating air door 4 are positioned on the refrigerating chamber 1; the air return duct outlet 5, the freezing fan 6 and the air return inlet heater 10 are positioned on the freezing chamber 2.
The first heating mechanism in set up two sets of cold-stored return air inlet 3, return air duct export 5 and return air inlet heater 10, step 2 in the first heating mechanism during operation two sets of return air inlet heaters 10 all heat, increased heating position quantity for the heat radiation is even, is favorable to changing the frost in advance.
And 5, the normal operation of the refrigerator in the step 5 comprises a first starting operation stage of the refrigerator and a normal refrigerating operation stage of the refrigerator.
When in use, the method comprises the following steps:
the method comprises the following steps that firstly, the refrigerator is started to operate after being electrified, gear setting is carried out according to temperature requirements of a refrigerating chamber 1 and a freezing chamber 2, and meanwhile, the refrigerator enters a normal starting and stopping operation state according to refrigerator control logic;
secondly, the normal operation of the refrigerator accumulates the power-on time and the accumulated operation time of the compressor, whether the entering condition of entering the defrosting is met is judged, if the entering condition of the defrosting is met, the refrigerator firstly enters a return air defrosting stage through a first heating mechanism, a refrigerating air door 4 is opened, cold air in a refrigerating chamber 2 enters a refrigerating chamber 1, a refrigerating fan 6 operates, the refrigerating fan 6 operates during refrigerating, cold air circulation of each chamber is realized, a return air inlet heater 10 is opened, the return air defrosting time is recorded, and if the condition of the defrosting is not met, the refrigerator continues to operate according to normal control logic;
thirdly, whether the return air defrosting time t1 is more than or equal to t2(t2 is logic control set time) is judged, if the conditions are met, the first heating mechanism is closed, namely the return air inlet heater 10 is closed, the freezing fan 6 stops running, the cold storage air door 4 is closed, the second heating mechanism starts working, namely the defrosting heater 9 starts working, and if the conditions are not met, the operation is continued according to the original logic;
judging whether the temperature (the function of controlling the start and stop of defrosting) T1 of the freezing evaporator 7 measured by the defrosting sensor 8 is greater than or equal to T2(T2 is the logic control set temperature) or not, if the condition is met, stopping the defrosting heater 9 to work, entering a water dripping stage of the freezing evaporator 7, and if the condition is not met, continuing to operate according to the original logic;
judging whether the water dripping time t3 of the refrigeration evaporator 7 is more than or equal to t4(t4 is logic control setting time) or not, if the condition is met, finishing the water dripping of the refrigeration evaporator 7, entering a first starting operation stage after defrosting, and then performing a normal starting and stopping stage according to control logic after reaching a stable state.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A novel defrosting structure of an air-cooled refrigerator comprises a refrigerating chamber and a freezing chamber, and is characterized in that the refrigerating chamber is positioned at the upper side of the freezing chamber, and a refrigerating return air inlet and a refrigerating air door are arranged on the refrigerating chamber; the freezing chamber outside be equipped with the return air duct export, freezing fan and freezing evaporimeter are equipped with to the freezing chamber inside, freezing evaporimeter both sides be equipped with and be used for surveying freezing evaporimeter temperature and the defrosting sensor and the defrosting heater of being connected with the refrigerator controller, freezing evaporimeter on be equipped with the return air inlet heater corresponding with the return air duct export.
2. The defrosting structure of the novel air-cooled refrigerator as claimed in claim 1, wherein the refrigerating chamber and the freezing chamber are double air return ducts, and two refrigerating air return inlets and two air return duct outlets are arranged and symmetrically distributed.
3. The defrosting structure of the novel air-cooled refrigerator as claimed in claim 1, wherein the defrosting sensor is positioned at the upper side of the defrosting heater, and the freezing fan is positioned at the upper side of the freezing evaporator.
4. The defrosting structure of the novel air-cooled refrigerator as claimed in claim 1, wherein the lower inlet pipe of the freezing evaporator is positioned at the upper side of the defrosting heater.
5. The defrosting structure of the novel air-cooled refrigerator as claimed in claim 4, wherein the freezing evaporator is of a coil structure, and the return air inlet heater is positioned at an elbow of the freezing evaporator.
6. The use method of the defrosting structure of the air-cooled refrigerator according to any one of the claims 1 to 5, which comprises the following steps,
step 1, starting a refrigerator to run until defrosting running conditions are met;
step 2, heating the upper part of the refrigeration evaporator by adopting a first heating mechanism of a return air inlet heater until the time of returning air for defrosting is more than or equal to the preset defrosting time;
step 3, closing the first heating mechanism, and starting a second heating mechanism adopting a defrosting heater until the temperature of the refrigeration evaporator measured by the defrosting sensor is greater than or equal to the preset temperature;
step 4, closing the second heating mechanism, and starting the refrigeration evaporator to drip water until the dripping time is more than or equal to the preset dripping time;
and 5, normally operating the refrigerator.
7. The use method as claimed in claim 6, wherein the step 1 is to determine whether the defrosting operation condition is reached according to the accumulated time of the compressor operation and the power-on in the normal operation of the refrigerator.
8. The use of claim 6, wherein the first heating structure in step 2 further comprises a refrigeration damper, a refrigeration return air inlet, a freezing fan and a return air duct outlet, the refrigeration return air inlet and the refrigeration damper being located in the refrigeration compartment; the air return channel outlet, the freezing fan and the air return inlet heater are positioned on the freezing chamber.
9. The use method as claimed in claim 8, wherein two sets of the refrigerating return air inlet, the return air duct outlet and the return air inlet heater are arranged in the first heating mechanism, and both sets of the return air inlet heaters heat when the first heating mechanism works in the step 2.
10. The use method as claimed in claim 6, wherein the normal operation of the refrigerator in the step 5 includes a first-time starting operation stage of the refrigerator and a normal cooling operation stage of the refrigerator.
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| CN202011288130.1A CN112595005A (en) | 2020-11-17 | 2020-11-17 | Novel defrosting structure of air-cooled refrigerator and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113776266A (en) * | 2021-09-06 | 2021-12-10 | 珠海格力电器股份有限公司 | Defrosting control method and device and refrigerator |
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| CN105865121A (en) * | 2016-03-31 | 2016-08-17 | 青岛海尔特种电冰箱有限公司 | Refrigeration and freezing device |
| CN106247742A (en) * | 2016-08-12 | 2016-12-21 | 合肥美菱股份有限公司 | A kind of refrigerator freezing fan defrosting device and control method thereof |
| CN107120899B (en) * | 2017-04-27 | 2019-09-20 | 海信（山东）冰箱有限公司 | A kind of wind cooling refrigerator and its defrosting control method |
| CN206919459U (en) * | 2017-05-31 | 2018-01-23 | 博特换热系统（江苏)有限公司 | A kind of automatic defrosting evaporator for being provided with layering fin |
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| CN113776266A (en) * | 2021-09-06 | 2021-12-10 | 珠海格力电器股份有限公司 | Defrosting control method and device and refrigerator |
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