CN112033071A - Refrigerator and defrosting method thereof - Google Patents
Refrigerator and defrosting method thereof Download PDFInfo
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- CN112033071A CN112033071A CN202010826198.4A CN202010826198A CN112033071A CN 112033071 A CN112033071 A CN 112033071A CN 202010826198 A CN202010826198 A CN 202010826198A CN 112033071 A CN112033071 A CN 112033071A
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- defrosting
- air door
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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
- F25D17/08—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 using ducts
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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
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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
-
- 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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- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/063—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation with air guides
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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
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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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 relates to the technical field of refrigerators, in particular to a refrigerator and a defrosting method thereof, wherein when the refrigerator reaches a preset defrosting condition, a freezing fan and a refrigerating air door are closed, a first air door, a second air door and a diversion fan are opened, at the moment, high-temperature gas stored in a compressor cabin is pushed into the refrigerator under the action of the diversion fan, and the high-temperature gas flows back to the compressor cabin along a diversion baffle; this scheme adopts the mode of high-temperature gas backward flow to realize getting rid of the frost layer of adhering to the evaporimeter, can guarantee on the one hand that high-temperature gas stably supplies to effectively avoid the condition of secondary heating, effectively shorten the time of defrosting, on the other hand defrosting remains the drop of water on the evaporimeter and will be weathered by the high-temperature gas of backward flow, thereby effectively avoid the condition that the secondary frosted, guarantee refrigeration effect, reduce the refrigerator energy consumption.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and a defrosting method thereof.
Background
At present, the defrosting mode of air-cooled refrigerator mainly utilizes the defrosting heater to heat the evaporimeter to the realization is got rid of and is attached to the frost layer on the evaporimeter, but because defrosting heater rate of rise is slower, thereby has prolonged the time of defrosting, has some drop of water to remain on the evaporimeter after defrosting moreover, can condense into frost again when the freezer refrigerates again, thereby influence refrigeration effect, increase the energy consumption of refrigerator.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a refrigerator and a defrosting method thereof to solve the technical problems of long defrosting time and partial water drops remaining on an evaporator after defrosting.
(II) technical scheme
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a refrigerator, including:
an evaporator provided on a wall surface of the refrigerator;
the guide baffle is arranged at the top end of the evaporator and used for separating the freezing chamber from the refrigerating chamber;
the first air door is arranged on a first air channel communicated between the freezing chamber and the compressor chamber and used for controlling high-temperature gas stored in the compressor chamber to flow into the refrigerator;
the second air door is arranged on a second air channel communicated between the freezing chamber and the press cabin and used for controlling the gas in the refrigerator to flow back into the press cabin;
and the flow guide fan is arranged in the first air channel.
Optionally, the refrigerator further comprises:
the first defrosting temperature sensing device is arranged in the middle of the evaporator and is used for detecting the temperature change of the middle of the evaporator;
and the second frost-removing temperature sensing device is arranged at the top end of the evaporator and is used for detecting the temperature change of the top end of the evaporator.
Optionally, a defrosting heater is further arranged at the bottom end of the evaporator.
In order to achieve the above object, a second aspect of the present invention provides a defrosting method, including:
if the refrigerator is detected to reach the preset defrosting condition;
then close freezing fan and cold-stored air door, open first air door, second air door and water conservancy diversion fan under the effect of water conservancy diversion fan, will deposit in the refrigerator is pushed to high-temperature gas in the compressor cabin, high-temperature gas flows back to the compressor cabin along the water conservancy diversion baffle in.
Optionally, the step of detecting that the refrigerator has reached a preset defrosting condition specifically includes:
acquiring the running time of the compressor;
and if the running time of the compressor is greater than or equal to the preset running time, determining that the refrigerator reaches the preset defrosting condition.
Optionally, the step of opening first air door, second air door and water conservancy diversion fan specifically includes:
opening a first air door and a second air door;
acquiring the opening time of the first air door;
judging whether the opening time of the first air door is greater than or equal to a preset first time length or not;
if yes, the diversion fan is started.
Optionally, the method further includes:
acquiring a current temperature value of the first defrosting temperature sensing device;
judging whether the current temperature value is greater than or equal to a preset first temperature value or not;
if yes, the first air door, the second air door and the diversion fan are closed, and the number of times of defrosting is counted as one time of defrosting.
Optionally, the method further includes:
acquiring the running time of the flow guide fan;
judging whether the running time of the diversion fan is greater than or equal to a preset second time length or not;
if yes, the first air door, the second air door and the diversion fan are closed, and the defrosting heater is started.
Optionally, after the step of turning on the defrosting heater, the method further includes:
acquiring the current temperature value of the second frost-removing temperature sensing device;
judging whether the current temperature value is greater than or equal to a preset second temperature value or not;
if so, the first air door, the second air door and the diversion fan are opened to remove water drops left on the evaporator.
Optionally, after the step of opening the first damper, the second damper and the guide fan, the method further includes:
acquiring the running time of the flow guide fan;
judging whether the running time of the diversion fan is greater than or equal to a preset third time length or not;
if yes, the first air door, the second air door and the diversion fan are closed, and the number of times of defrosting is counted as one time of defrosting.
Optionally, the method further includes:
acquiring the currently accumulated defrosting times;
judging whether the currently accumulated defrosting times are more than or equal to preset defrosting times or not;
if yes, the freezing fan and the refrigerating air door are closed, and the defrosting heater is started.
Optionally, after the defrosting heater is turned on, the method further includes:
acquiring a current temperature value of a second frost-removal temperature sensing device;
judging whether the current temperature value is greater than or equal to a preset second temperature value or not;
if so, the first air door, the second air door and the diversion fan are opened to remove water drops left on the evaporator.
Optionally, after the step of opening the first damper, the second damper and the guide fan, the method further includes:
acquiring the running time of the flow guide fan;
judging whether the running time of the diversion fan is greater than or equal to a preset fourth time length or not;
if yes, clearing the defrosting times and exiting the defrosting program.
In order to achieve the above object, a third aspect of the present invention provides a refrigerator defrosting system, including: the system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus; the memory has stored therein a computer program operable on the processor, which when executed implements the steps of the method of any of the preceding claims.
In order to achieve the above object, a fourth aspect of the present invention provides a storage medium having a computer program stored therein, wherein the computer program is configured to perform the method of any one of the preceding claims when the computer program runs.
(III) the beneficial effects are as follows:
the embodiment of the invention has the following advantages or beneficial effects:
the embodiment of the invention provides a refrigerator, which comprises: an evaporator provided on a wall surface of the refrigerator; the guide baffle is arranged at the top end of the evaporator and used for separating the freezing chamber from the refrigerating chamber; the first air door is arranged on a first air channel communicated between the freezing chamber and the compressor chamber and used for controlling high-temperature gas stored in the compressor chamber to flow into the refrigerator; the second air door is arranged on a second air channel communicated between the freezing chamber and the press cabin and used for controlling the gas in the refrigerator to flow back into the press cabin; the flow guide fan is arranged in the first air channel; when the refrigerator reaches a preset defrosting condition, closing the freezing fan and the refrigerating air door, opening the first air door, the second air door and the flow guide fan, pushing high-temperature gas stored in the compressor cabin into the refrigerator under the action of the flow guide fan, and enabling the high-temperature gas to flow back into the compressor cabin along the flow guide baffle; this scheme adopts the mode of high-temperature gas backward flow to realize getting rid of the frost layer of adhering to the evaporimeter, can guarantee on the one hand that high-temperature gas stably supplies to effectively avoid the condition of secondary heating, effectively shorten the time of defrosting, on the other hand defrosting remains the drop of water on the evaporimeter and will be weathered by the high-temperature gas of backward flow, thereby effectively avoid the condition that the secondary frosted, guarantee refrigeration effect, reduce the refrigerator energy consumption.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic view of a refrigerator according to the present invention;
FIG. 2 is a schematic flow diagram of a defrosting process according to an embodiment of the invention;
FIG. 3 is a schematic flow diagram of another embodiment of a defrosting method of the present invention;
FIG. 4 is a schematic flow diagram of a defrosting method according to another embodiment of the invention;
fig. 5 is a structural diagram of a refrigerator defrosting system according to an embodiment of the present invention.
In the figure: 1. an evaporator; 2. a flow guide baffle plate; 3. a first damper; 4. a second damper; 5. A first frost-removing temperature-sensing device; 6. a second frost-removing temperature-sensing device; 7. a defrosting heater; 8. a processor; 9. a memory; 10. a communication bus.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the following figures and detailed description:
it should be noted that the preset duration and various preset temperature values mentioned in the present application are obtained according to a plurality of tests;
because the existing air-cooled refrigerator has the defects of long defrosting time, partial water drops left in the evaporator 1 after defrosting and the like, as shown in fig. 1, the embodiment of the first aspect of the invention provides a refrigerator, which comprises:
an evaporator 1 provided on a wall surface of the refrigerator;
the guide baffle 2 is arranged at the top end of the evaporator 1 and is used for separating the freezing chamber from the refrigerating chamber;
preferably, the flow guide baffle 2 is arranged to be an arc-shaped structure, and the arc-shaped structure is bent towards a direction far away from the evaporator 1, so that the design can move high-temperature gas from the inside of the press cabin along the flow guide baffle 2 and finally return to the inside of the press cabin, and therefore the backflow process of the high-temperature gas is realized; meanwhile, the flow guide baffle 2 can also effectively prevent high-temperature gas from entering the refrigerating chamber to influence food stored in the refrigerating chamber;
the first air door 3 is arranged on a first air channel communicated between the freezing chamber and the compressor chamber and used for controlling high-temperature gas stored in the compressor chamber to flow into the refrigerator; specifically, one end of the press cabin is in contact with air, so a large amount of high-temperature gas is stored in the press cabin, and the scheme utilizes the part of high-temperature gas, so that on one hand, defrosting treatment in the refrigerator can be realized, on the other hand, the heat dissipation performance of the refrigerator is improved, and therefore the normal use of the refrigerator is ensured; when the defrosting mode is started, the first air door 3 is opened through the controller, so that high-temperature gas stored in the compressor chamber flows into the refrigerator, and meanwhile, the entering amount of the high-temperature gas can be controlled by controlling the opening and closing size of the first air door 3, so that the defrosting effect in the refrigerator can be adjusted in real time;
the second air door 4 is arranged on a second air channel communicated between the freezing chamber and the press cabin and used for controlling the gas in the refrigerator to flow back into the press cabin; when the refrigerator is used, the first air door 3 is opened, the second air door 4 is opened at the same time, high-temperature gas contacting with frost layers is enabled to flow back to the interior of the press cabin through the second air door 4, the temperature in the press cabin is raised for the second time, and then the high-temperature gas enters the refrigerator through the first air door 3, so that the recycling of the gas is realized, and the arrow direction in the figure is the flowing direction of the high-temperature gas; meanwhile, the opening and closing size of the second air door 4 can be controlled to control the speed of cooled high-temperature gas entering the press cabin, for example, when the current refrigerator temperature is detected to be too low, the opening degree of the first air door 3 can be increased to reduce the opening degree of the second air door 4, so that the temperature in the refrigerator is increased to a certain extent;
the flow guide fan is arranged in the first air channel; under the effect of water conservancy diversion fan, on the one hand can promote high-temperature gas to flow into in the refrigerator, on the other hand can form pressure in the refrigerator to guarantee that high-temperature gas can flow back to the press under the effect of pressure smoothly in the cabin.
When the refrigerator reaches a preset defrosting condition, closing the freezing fan and the refrigerating air door, opening the first air door 3, the second air door 4 and the diversion fan, pushing high-temperature gas stored in the compressor cabin into the refrigerator under the action of the diversion fan, and enabling the high-temperature gas to flow back to the compressor cabin along the diversion baffle 2; this scheme adopts the mode of high-temperature gas backward flow to realize getting rid of the frost layer of adhering to evaporimeter 1, can guarantee on the one hand that high-temperature gas stably supplies to effectively avoid the condition of secondary heating, effectively shorten the time of defrosting, on the other hand defrosting remains the drop of water on evaporimeter 1 and will be weathered by the high-temperature gas of backward flow, thereby effectively avoid the condition that the secondary frosted, guarantee refrigeration effect, reduce the refrigerator energy consumption.
In one embodiment of the present invention, in order to facilitate monitoring of the degree of defrosting of the evaporator 1 at present, as shown in fig. 1, the refrigerator further includes:
a first frost-removing temperature-sensing device 5 disposed at a middle position of the evaporator 1, for detecting a temperature change at the middle position of the evaporator 1;
the second frost-removing temperature sensing device 6 is arranged at the top end of the evaporator 1 and is used for detecting the temperature change of the top end of the evaporator 1; preferably, the first defrosting temperature sensing device 5 and the second defrosting temperature sensing device 6 are both arranged as defrosting temperature sensing bags; it can be known from many tests that the frost layer on the top end of the evaporator 1 in the prior art is not easy to remove, so that the second frost-removing temperature-sensing device 6 is added at the position to monitor the frost-removing effect.
In one embodiment of the present invention, in order to further enhance the defrosting effect of the refrigerator, as shown in fig. 1, a defrosting heater 7 is further disposed at the bottom end of the evaporator 1; during the use, when set up in when the temperature of the second frost temperature-sensing device 6 on the top of evaporimeter 1 does not reach predetermined temperature, then explain the top of evaporimeter 1 this moment still has remaining frost layer, then open defrosting heater 7 and assist the defrosting, close first air door 3 this moment, second air door 4 and water conservancy diversion fan, when the temperature of second frost temperature-sensing device 6 reaches predetermined temperature, then explain the top frost layer of evaporimeter 1 this moment and got rid of, at this moment, open first air door 3 once more, second air door 4 and water conservancy diversion fan, thereby get rid of the drop of water of leaveing on evaporimeter 1, avoid the drop of water to condense into the frost again, influence refrigerator refrigeration effect.
As shown in fig. 2, an embodiment of the second aspect of the present invention provides a defrosting method, which may include the following steps:
step S101, if the refrigerator is detected to reach a preset defrosting condition;
specifically, the running time of the compressor is obtained;
if the running time of the compressor is greater than or equal to the preset running time, determining that the refrigerator reaches the preset defrosting condition;
for example, if the preset compressor running time is 2 hours, the compressor running time is obtained in real time, if the running time of the compressor is detected to be more than or equal to 2 hours, defrosting operation is executed, and if the running time of the compressor is less than 2 hours, preset refrigerating operation is executed;
step S102, closing the freezing fan and the refrigerating air door, opening the first air door 3, the second air door 4 and the diversion fan, pushing high-temperature gas stored in the compressor cabin into the refrigerator under the action of the diversion fan, and enabling the high-temperature gas to flow back to the compressor cabin along the diversion baffle 2.
When the refrigerator reaches a preset defrosting condition, closing the freezing fan and the refrigerating air door, opening the first air door 3, the second air door 4 and the diversion fan, pushing high-temperature gas stored in the compressor cabin into the refrigerator under the action of the diversion fan, and enabling the high-temperature gas to flow back to the compressor cabin along the diversion baffle 2; this scheme adopts the mode of high-temperature gas backward flow to realize getting rid of the frost layer of adhering to evaporimeter 1, can guarantee on the one hand that high-temperature gas stably supplies to effectively avoid the condition of secondary heating, effectively shorten the time of defrosting, on the other hand defrosting remains the drop of water on evaporimeter 1 and will be weathered by the high-temperature gas of backward flow, thereby effectively avoid the condition that the secondary frosted, guarantee refrigeration effect, reduce the refrigerator energy consumption.
In an embodiment of the present invention, the step of opening the first damper 3, the second damper 4, and the air guide fan specifically includes:
opening the first damper 3 and the second damper 4;
acquiring the opening time of the first air door 3;
judging whether the opening time of the first air door 3 is greater than or equal to a preset first time length or not;
if yes, starting the diversion fan;
if not, continuing to open the first air door 3;
specifically, in order to avoid damage to the devices in the refrigerator due to sudden entry of a large amount of high-temperature gas, the preheating process is introduced in the embodiment, specifically as follows:
for convenience of description, the first duration is 30s, when it is detected that the refrigerator has reached the preset defrosting condition, the first damper 3 and the second damper 4 are firstly opened to preheat the freezing chamber of the refrigerator, the preheating time is 30s, and when it is detected that the opening time of the first damper 3 is greater than or equal to 30s, the diversion fan is opened to assist a large amount of high-temperature gas to perform defrosting treatment on the evaporator 1 in the freezing chamber.
In one embodiment of the invention, the method further comprises:
step S103, acquiring a current temperature value of the first defrosting temperature sensing device 5;
step S104, judging whether the current temperature value of the first defrosting temperature sensing device 5 is larger than or equal to a preset first temperature value;
step S105, if yes, closing the first air door 3, the second air door 4 and the diversion fan, recording as one-time defrosting, and counting defrosting times;
specifically, the first temperature value is taken as 8 ℃, the current temperature value of the first defrosting temperature sensing device 5 is obtained in real time, when the current temperature value of the first defrosting temperature sensing device 5 is judged to be more than or equal to 8 ℃, the defrosting is completed at the moment, the first air door 3, the second air door 4 and the flow guide fan are closed, and the defrosting times are counted as one-time defrosting;
in order to more accurately judge whether the current defrosting operation is completed, preferably, the current temperature value of the first defrosting temperature sensing device 5 and the current temperature value of the second defrosting temperature sensing device 6 may be respectively obtained, when it is judged that the current temperature value of the first defrosting temperature sensing device 5 and the current temperature value of the second defrosting temperature sensing device 6 are both greater than a preset temperature value, it is indicated that the frost layers at the middle position and the top end of the evaporator 1 are all melted, and the first air door 3, the second air door 4 and the flow guide fan are closed and counted as defrosting times for once defrosting.
As shown in fig. 3, in another embodiment of the present invention, there is provided a defrosting method, which may include the steps of:
step S201, if the refrigerator is detected to reach the preset defrosting condition;
specifically, the running time of the compressor is obtained;
and if the running time of the compressor is greater than or equal to the preset running time, determining that the refrigerator reaches the preset defrosting condition.
Step S202, the freezing fan and the cold storage air door are closed, the first air door 3, the second air door 4 and the diversion fan are opened, high-temperature gas stored in the compressor cabin is pushed into the refrigerator under the action of the diversion fan, and the high-temperature gas flows back to the compressor cabin along the diversion baffle 2.
The method further comprises the following steps:
step S203, acquiring the running time of the guide fan;
step S204, judging whether the running time of the diversion fan is greater than or equal to a preset second time length;
in step S205, if yes, the first damper 3, the second damper 4 and the diversion fan are closed, and the defrosting heater 7 is turned on.
Specifically, the second time period is a limit value obtained by a person skilled in the art through multiple tests, complete defrosting can be realized when the diversion fan generally operates for less than the second time period, if the operation time exceeds the second time period, the defrosting layer is not completely melted at the time, the second time period is described by taking 20min as an example, when the operation time of the current diversion fan is detected to be greater than or equal to 20min, the defrosting layer of the evaporator 1 is not completely melted at the time, and the defrosting heater 7 is turned on to perform auxiliary defrosting at the time;
certainly, in order to more accurately determine the cooperation among the first air door 3, the second air door 4 and the diversion fan, whether the frost layer is completely melted or not can be determined, the temperature of the second frost temperature sensing device 6 arranged at the top end of the evaporator 1 can be simultaneously observed for judgment, when the operation time of the diversion fan exceeds the preset second time and the temperature of the second frost temperature sensing device 6 is lower than the preset temperature, it is indicated that the frost layer is not completely melted at this time, and the defrosting heater 7 is turned on for auxiliary defrosting.
In one embodiment of the present invention, after the step of turning on the defrosting heater 7, the method further includes:
step S206, acquiring a current temperature value of the second frost inducing temperature device 6;
step S207, judging whether the current temperature value is greater than or equal to a preset second temperature value;
in step S208, if yes, the first damper 3, the second damper 4 and the guiding fan are opened to remove the water drops left on the evaporator 1.
Specifically, the second temperature value is described by taking 6 ℃ as an example, the current temperature value of the second frost temperature sensing device 6 is obtained again, when the temperature of the second frost temperature sensing device 6 exceeds the preset 6 ℃, it is described that the frost layer is completely melted, and at this time, the first air door 3, the second air door 4 and the flow guide fan are opened again, so that water drops left on the evaporator 1 are removed, and the phenomenon that the water drops are condensed into frost again to affect the refrigeration effect of the refrigerator is avoided.
After the step of opening the first damper 3, the second damper 4 and the guide fan, the method further comprises:
step S209, acquiring the running time of the guide fan;
step S210, judging whether the running time of the diversion fan is greater than or equal to a preset third time length;
and S211, if so, closing the first air door 3, the second air door 4 and the diversion fan, recording as one-time defrosting, and counting the defrosting times.
Specifically, the third time period is described by taking 5min as an example, and when the operation time of the induced draft fan is greater than or equal to 5min, it is described that the water droplets left on the evaporator 1 are removed, one defrosting operation is completed, and the defrosting times are counted.
As shown in fig. 4, in yet another embodiment of the present invention, there is provided a defrosting method, further comprising:
step S301, acquiring currently accumulated defrosting times;
step S302, judging whether the currently accumulated defrosting times are more than or equal to preset defrosting times;
in step S303, if yes, the freezing fan and the refrigerating damper are closed, and the defrosting heater 7 is turned on.
Specifically, the defrosting times are preferably 5 times, and this embodiment is to remove residual frost accumulated by multiple defrosting, improve the reliability of the unit, and thus increase forced defrosting operation;
when the currently accumulated defrosting times is detected to be more than 5 times, the refrigerator triggers forced defrosting operation, namely, the freezing fan and the refrigerating air door are closed, and the defrosting heater 7 is started.
After the defrosting heater 7 is turned on, the method further includes:
step S304, acquiring the current temperature value of the second frost-removal temperature-sensing device 6;
step S305, judging whether the current temperature value is larger than or equal to a preset second temperature value;
step S306, if yes, the first damper 3, the second damper 4 and the guiding fan are opened to remove the water droplets left on the evaporator 1.
Specifically, the second temperature value is 10 ℃ as an example, and when it is detected that the current temperature value of the second frost-removal temperature-sensing device 6 is greater than or equal to the preset 10 ℃, it indicates that all residual frost in the air duct is removed at this time, and at this time, the first air door 3, the second air door 4 and the flow-guiding fan are opened to remove water droplets left on the evaporator 1.
After the step of opening the first damper 3, the second damper 4 and the guide fan, the method further comprises:
step S307, acquiring the running time of the guide fan;
step S308, judging whether the running time of the diversion fan is greater than or equal to a preset fourth time length;
and step S309, if yes, clearing the defrosting times and exiting the defrosting program.
Specifically, the fourth time duration is 5min for example, and at this time, when it is detected that the operation time of the diversion fan is greater than or equal to 5min, it is indicated that the water drops are blown dry, so that the forced defrosting operation is ended, the defrosting times are cleared, the defrosting program is exited, and preparation is made for the next defrosting period.
As shown in fig. 5, a third aspect embodiment of the present invention provides a refrigerator defrosting system, including: the system comprises a processor 8, a communication interface, a memory 9 and a communication bus 10, wherein the processor 8, the communication interface and the memory 9 are communicated with each other through the communication bus 10; the memory 9 stores a computer program operable on the processor 8, and the processor 8 implements the steps of any of the above methods when executing the computer program.
A fourth aspect of the present invention provides a storage medium having a computer program stored thereon, wherein the computer program is arranged to perform the method of any one of the preceding claims when executed.
The communication bus 10 mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The memory 9 may include a Random Access Memory (RAM) 9, and may also include a non-volatile memory 9 (e.g., at least one disk memory 9). Alternatively, the memory 9 may be at least one memory device located remotely from the processor 8.
The processor 8 may be a general-purpose processor 8, and includes a Central Processing Unit (CPU) 8, a Network Processor (NP) 8, and the like; but also a digital signal processor 8 (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the invention are brought about in whole or in part when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (ssd)), among others.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (15)
1. A refrigerator, characterized by comprising:
an evaporator provided on a wall surface of the refrigerator;
the guide baffle is arranged at the top end of the evaporator and used for separating the freezing chamber from the refrigerating chamber;
the first air door is arranged on a first air channel communicated between the freezing chamber and the compressor chamber and used for controlling high-temperature gas stored in the compressor chamber to flow into the refrigerator;
the second air door is arranged on a second air channel communicated between the freezing chamber and the press cabin and used for controlling the gas in the refrigerator to flow back into the press cabin;
and the flow guide fan is arranged in the first air channel.
2. The refrigerator according to claim 1, further comprising:
the first defrosting temperature sensing device is arranged in the middle of the evaporator and is used for detecting the temperature change of the middle of the evaporator;
and the second frost-removing temperature sensing device is arranged at the top end of the evaporator and is used for detecting the temperature change of the top end of the evaporator.
3. The refrigerator as claimed in claim 1, wherein a defrosting heater is further provided at a bottom end of the evaporator.
4. A defrosting method applied to the refrigerator of any one of claims 1 to 3, the method comprising:
if the refrigerator is detected to reach the preset defrosting condition;
then close freezing fan and cold-stored air door, open first air door, second air door and water conservancy diversion fan under the effect of water conservancy diversion fan, will deposit in the refrigerator is pushed to high-temperature gas in the compressor cabin, high-temperature gas flows back to the compressor cabin along the water conservancy diversion baffle in.
5. The defrosting method according to claim 4, wherein the step of detecting that the refrigerator has reached a preset defrosting condition specifically comprises:
acquiring the running time of the compressor;
and if the running time of the compressor is greater than or equal to the preset running time, determining that the refrigerator reaches the preset defrosting condition.
6. The defrosting method according to claim 4, wherein the step of opening the first damper, the second damper and the air guide fan specifically comprises:
opening a first air door and a second air door;
acquiring the opening time of the first air door;
judging whether the opening time of the first air door is greater than or equal to a preset first time length or not;
if yes, the diversion fan is started.
7. The defrosting method of claim 4, further comprising:
acquiring a current temperature value of a first defrosting temperature sensing device;
judging whether the current temperature value is greater than or equal to a preset first temperature value or not;
if yes, the first air door, the second air door and the diversion fan are closed, and the number of times of defrosting is counted as one time of defrosting.
8. The defrosting method of claim 4, further comprising:
acquiring the running time of the flow guide fan;
judging whether the running time of the diversion fan is greater than or equal to a preset second time length or not;
if yes, the first air door, the second air door and the diversion fan are closed, and the defrosting heater is started.
9. The defrosting method of claim 8, wherein after the step of turning on the defrosting heater, the method further comprises:
acquiring a current temperature value of a second frost-removal temperature sensing device;
judging whether the current temperature value is greater than or equal to a preset second temperature value or not;
if so, the first air door, the second air door and the diversion fan are opened to remove water drops left on the evaporator.
10. The method of defrosting of claim 9, wherein after the steps of opening the first damper, the second damper, and the inducer blower, the method further comprises:
acquiring the running time of the flow guide fan;
judging whether the running time of the diversion fan is greater than or equal to a preset third time length or not;
if yes, the first air door, the second air door and the diversion fan are closed, and the number of times of defrosting is counted as one time of defrosting.
11. The defrosting method of claim 4, further comprising:
acquiring the currently accumulated defrosting times;
judging whether the currently accumulated defrosting times are more than or equal to preset defrosting times or not;
if yes, the freezing fan and the refrigerating air door are closed, and the defrosting heater is started.
12. The defrosting method of claim 11 wherein after the defrosting heater is turned on, the method further comprises:
acquiring a current temperature value of a second frost-removal temperature sensing device;
judging whether the current temperature value is greater than or equal to a preset second temperature value or not;
if so, the first air door, the second air door and the diversion fan are opened to remove water drops left on the evaporator.
13. The method of defrosting of claim 12, wherein after the steps of opening the first damper, the second damper, and the inducer blower, the method further comprises:
acquiring the running time of the flow guide fan;
judging whether the running time of the diversion fan is greater than or equal to a preset fourth time length or not;
if yes, clearing the defrosting times and exiting the defrosting program.
14. A refrigerator defrosting system, characterized in that the refrigerator defrosting system comprises: the system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus; the memory stores a computer program operable on the processor, wherein the processor implements the steps of the method of any of claims 4 to 13 when executing the computer program.
15. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 4 to 13 when executed.
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| CN202010826198.4A CN112033071B (en) | 2020-08-17 | 2020-08-17 | Refrigerator and defrosting method thereof |
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| CN202010826198.4A CN112033071B (en) | 2020-08-17 | 2020-08-17 | Refrigerator and defrosting method thereof |
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