CN109990546B - Defrosting method and device for refrigerator - Google Patents
Defrosting method and device for refrigerator Download PDFInfo
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- CN109990546B CN109990546B CN201910251959.5A CN201910251959A CN109990546B CN 109990546 B CN109990546 B CN 109990546B CN 201910251959 A CN201910251959 A CN 201910251959A CN 109990546 B CN109990546 B CN 109990546B
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- refrigerator
- controller
- electric heater
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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
- F25D21/002—Defroster control
- F25D21/004—Control mechanisms
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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
- F25D21/08—Removing frost by electric heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a defrosting method and a defrosting device for a refrigerator. Relates to the technical field of refrigerator defrosting. The invention comprises monitoring the return air pressure of the freezing mask of the refrigerator in real time by a pressure sensor; the controller judges whether the pressure data is less than or equal to a pressure threshold value 80%; if so, the controller controls to close a compressor and a refrigeration motor of the refrigerator and turn on the electric heater, and meanwhile, the controller controls to acquire temperature data monitored by a temperature sensor arranged on the upper part of the evaporator; the controller judges whether the temperature data reaches a temperature threshold value; if yes, the electric heater stops heating. According to the invention, whether the wind pressure data transmitted by the pressure sensor is greater than the equal pressure threshold value x 80% or not is judged; the defrosting condition of the surface of the evaporator at present is judged, the electric heater is started in time for defrosting, the defrosting amount of the surface of the evaporator is effectively controlled, the defrosting of the refrigerator is more reasonable, and the refrigerating efficiency of the refrigerator is improved.
Description
Technical Field
The invention belongs to the technical field of refrigerator defrosting, and particularly relates to a refrigerator defrosting method and device.
Background
With the continuous deepening of the concept of energy conservation and emission reduction, the energy conservation and environmental protection of the household electric appliance for the refrigerator are more and more emphasized. The frostless refrigerator is usually equipped with a defrosting electric heater, and generally, when the frost amount on the surface of the evaporator is large, the refrigerating efficiency of the refrigerator is greatly reduced. The current defrosting rule can not timely and accurately defrost, the efficiency of the refrigerator can be reduced to a certain degree, and data waste is caused.
The invention provides a defrosting method and a defrosting device for a refrigerator, which can well monitor the frosting condition of the surface of an evaporator, effectively defrost in time and improve the parallel refrigeration efficiency.
Disclosure of Invention
The invention aims to provide a defrosting method and a defrosting device for a refrigerator, which determine whether to close a compressor and a refrigerating motor of the refrigerator and turn on an electric heater by judging whether wind pressure data transmitted by a pressure sensor is greater than equal to 80% of a pressure threshold; meanwhile, whether the temperature data transmitted by the temperature sensor is larger than a temperature threshold value or not is judged, whether the electric heater continuously heats or not is determined, the frosting condition of the surface of the evaporator is monitored in real time, timely and effective defrosting is guaranteed, and the problem that the refrigerating efficiency is reduced due to the fact that the evaporator is full of frost and cannot be defrosted in time is solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a defrosting method for a refrigerator, which comprises the following steps:
the method comprises the following steps: the air pressure condition of an air return inlet of a freezing air cover of the refrigerator is monitored in real time through a pressure sensor, and monitored pressure data are transmitted to a controller, at the moment, a compressor and a refrigerating motor are in an opening state, and an electric heater is in a closing state;
step two: the controller judges whether the pressure data is less than or equal to a pressure threshold value x 80%; if yes, executing the fourth step; if not, executing the third step;
step three: keeping the compressor and the refrigeration motor in the current state and keeping the electric heater closed;
step four: the controller controls the compressor and the refrigeration motor of the refrigerator to be closed and the electric heater to be started, and meanwhile, the fifth step is executed;
step five: the controller is used for controlling and acquiring temperature data monitored by a temperature sensor arranged at the upper part of the evaporator;
step six: the controller judges whether the temperature data reaches a temperature threshold value; if so, stopping heating by the electric heater; if not, the electric heater continuously heats.
Preferably, the pressure threshold is: the maximum pressure value monitored by the pressure sensor within an hour after the refrigerator is electrified and stably operated; the temperature threshold is 0 ℃.
Preferably, the current states of the compressor and the refrigeration motor in the third step are kept to be the same as the states of the compressor and the refrigeration motor in the first step; in the first step, the compressor and the refrigeration motor are in an open state, and the electric heater is in a closed state.
A defrosting device of a refrigerator comprises a controller, a pressure sensor, a temperature sensor and an electric heater, wherein the pressure sensor, the temperature sensor and the electric heater are electrically connected with the controller;
the pressure sensor is arranged at the air return opening of the freezing air cover of the refrigerator and is used for monitoring the air pressure data at the air return opening in real time; the temperature sensor is arranged on the upper part of the evaporator and used for monitoring the temperature data of the evaporator in real time;
the controller determines whether to close a compressor and a refrigeration motor of the refrigerator and turn on an electric heater by judging whether the wind pressure data transmitted by the pressure sensor is greater than an equal pressure threshold value 80%;
the controller determines whether to continue heating through the electric heater by judging whether the temperature data transmitted by the temperature sensor is greater than a temperature threshold value.
Preferably, the controller is further electrically connected to a compressor and a refrigeration motor of the refrigerator respectively; the controller is also used for monitoring the switches of the compressor, the refrigerating motor and the electric heater.
The invention has the following beneficial effects:
according to the invention, a pressure sensor is arranged at the air return opening of the freezing mask, and whether a compressor and a refrigeration motor of a refrigerator are closed and an electric heater is started is determined by judging whether the air pressure data transmitted by the pressure sensor is greater than an equal pressure threshold value of 80 percent; meanwhile, a temperature sensor is arranged on the evaporator, and whether temperature data transmitted by the temperature sensor is greater than a temperature threshold value is judged; the frosting condition of the surface of the evaporator is judged after analysis and treatment, the electric heater is started to defrost in time, and the frosting amount of the surface of the evaporator is effectively controlled, so that the defrosting of the refrigerator is more reasonable; compared with the traditional defrosting device, the invention has the characteristics of intellectualization, timeliness and short defrosting time, and improves the refrigeration efficiency of the refrigerator.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a defrosting method for a refrigerator according to the present invention;
fig. 2 is a schematic structural view of a defrosting apparatus for a refrigerator in accordance with the present invention.
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.
In the description of the present invention, it is to be understood that the terms "on" and the like indicate an orientation or positional relationship only for the convenience of description and simplification of description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
The first embodiment is as follows:
referring to fig. 1, the present invention is a defrosting method for a refrigerator, including the following steps:
the method comprises the following steps: the air pressure condition of an air return inlet of a freezing air cover of the refrigerator is monitored in real time through a pressure sensor 1, and monitored pressure data are transmitted to a controller 3, at the moment, a compressor and a refrigerating motor are in an opening state, and an electric heater 2 is in a closing state;
step two: the controller 3 judges whether the pressure data is less than or equal to a pressure threshold value 80%; if yes, executing the fourth step; if not, executing the third step;
step three: keeping the compressor and the refrigeration motor in the current state and keeping the electric heater 2 closed;
step four: the controller 3 controls to close the compressor and the refrigeration motor of the refrigerator and to turn on the electric heater 2, and simultaneously executes the fifth step;
step five: the controller 3 controls and obtains temperature data monitored by a temperature sensor 4 arranged at the upper part of the evaporator 5;
step six: the controller 3 judges whether the temperature data reaches a temperature threshold value; if yes, the electric heater 2 stops heating; if not, the electric heater 2 continuously heats.
Wherein, the pressure threshold is: the maximum pressure value monitored by the pressure sensor 1 within 4 hours after the refrigerator is electrified and stably operated; the temperature threshold was 0 ℃.
Keeping the current states of the compressor and the refrigeration motor in the third step to be the same as the states of the compressor and the refrigeration motor in the first step; in the first step, the compressor and the refrigeration motor are in an on state, and the electric heater 2 is in an off state.
Referring to fig. 2, a defrosting apparatus for a refrigerator includes a controller 3, and a pressure sensor 1, a temperature sensor 4 and an electric heater 2 electrically connected to the controller 3;
the pressure sensor 1 is arranged at an air return opening of a refrigerator freezing air cover and used for monitoring air pressure data at the air return opening in real time; the temperature sensor 4 is arranged on the upper part of the evaporator 5 and is used for monitoring the temperature data of the evaporator 5 in real time;
the controller 3 determines whether to turn off a compressor and a refrigeration motor of the refrigerator and turn on the electric heater 2 by judging whether the wind pressure data transmitted by the pressure sensor 1 is greater than equal to a pressure threshold value 80%;
the controller 3 determines whether to continue heating by the electric heater 2 by judging whether the temperature data delivered from the temperature sensor 4 is greater than a temperature threshold value.
The controller 3 is also electrically connected with a compressor and a refrigeration motor of the refrigerator respectively; the controller 3 is also used to monitor the switching of the compressor, the refrigeration motor and the electric heater 2.
In the actual use process of the invention: the method comprises the steps that a pressure sensor is installed at an air return opening of a freezing mask, and whether a compressor and a refrigerating motor of a refrigerator are closed and an electric heater is started is determined by judging whether wind pressure data transmitted by the pressure sensor is larger than an equal pressure threshold value 80%; meanwhile, a temperature sensor is arranged on the evaporator, and whether temperature data transmitted by the temperature sensor is greater than a temperature threshold value is judged; after analysis and treatment, the frosting condition of the surface of the evaporator is judged at present, the electric heater is started to defrost in time, and the frosting amount of the surface of the evaporator is effectively controlled, so that the defrosting of the refrigerator is more reasonable.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. A defrosting method for a refrigerator is characterized by comprising the following steps:
the method comprises the following steps: the air pressure condition of an air return inlet of a refrigeration mask of the refrigerator is monitored in real time through a pressure sensor (1), and monitored pressure data are transmitted to a controller (3);
step two: the controller (3) determines whether the pressure data is less than or equal to a pressure threshold value x 80%; if yes, executing the fourth step; if not, executing the third step;
step three: keeping the compressor and the refrigeration motor in the current state and keeping the electric heater (2) closed;
step four: the controller (3) controls the compressor and the refrigeration motor of the refrigerator to be closed and the electric heater (2) to be started, and meanwhile, the fifth step is executed;
step five: the controller (3) controls and acquires temperature data monitored by a temperature sensor (4) arranged at the upper part of the evaporator (5);
step six: the controller (3) judges whether the temperature data reaches a temperature threshold value; if yes, the electric heater (2) stops heating; if not, the electric heater (2) continuously heats.
2. A defrosting method for a refrigerator according to claim 1, wherein said pressure threshold is: the pressure sensor (1) monitors the maximum pressure value within 4 hours after the refrigerator is electrified and stably operated; the temperature threshold is 0 ℃.
3. The defrosting method for a refrigerator according to claim 1, wherein the current states of the compressor and the refrigerating motor in the third step are maintained to be the same as the states of the compressor and the refrigerating motor in the first step; in the first step, the compressor and the refrigeration motor are in an open state, and the electric heater (2) is in a closed state.
4. A defrosting apparatus for a refrigerator for performing a defrosting method for a refrigerator according to any one of claims 1 to 3, comprising a controller (3) and a pressure sensor (1), a temperature sensor (4) and an electric heater (2) electrically connected to the controller (3);
the pressure sensor (1) is arranged at an air return opening of a refrigerator freezing fan cover and used for monitoring air pressure data at the air return opening in real time; the temperature sensor (4) is arranged at the upper part of the evaporator (5) and is used for monitoring the temperature data of the evaporator (5) in real time;
the controller (3) determines whether to close a compressor and a refrigeration motor of the refrigerator and turn on the electric heater (2) by judging whether the wind pressure data transmitted by the pressure sensor (1) is greater than or equal to a pressure threshold value 80%;
the controller (3) determines whether to continuously heat through the electric heater (2) by judging whether the temperature data transmitted by the temperature sensor (4) is larger than a temperature threshold value.
5. The defrosting device for a refrigerator according to claim 4, wherein the controller (3) is further electrically connected to a compressor and a refrigeration motor of the refrigerator, respectively; the controller (3) is also used for monitoring the switches of the compressor, the refrigerating motor and the electric heater (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251959.5A CN109990546B (en) | 2019-03-29 | 2019-03-29 | Defrosting method and device for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251959.5A CN109990546B (en) | 2019-03-29 | 2019-03-29 | Defrosting method and device for refrigerator |
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| Publication Number | Publication Date |
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| CN109990546A CN109990546A (en) | 2019-07-09 |
| CN109990546B true CN109990546B (en) | 2021-04-09 |
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| CN201910251959.5A Active CN109990546B (en) | 2019-03-29 | 2019-03-29 | Defrosting method and device for refrigerator |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3769340B2 (en) * | 1996-12-06 | 2006-04-26 | 株式会社東洋製作所 | Push-in air conditioner |
| KR100337292B1 (en) * | 2000-07-26 | 2002-05-17 | 윤종용 | Refrigerator |
| CN105091457B (en) * | 2015-07-31 | 2017-11-17 | 合肥美的电冰箱有限公司 | Wind cooling refrigerator and its control method and control system |
| KR101843641B1 (en) * | 2016-07-19 | 2018-03-30 | 엘지전자 주식회사 | Defrosting apparatus and refrigerator including the same |
| CN106123446B (en) * | 2016-08-31 | 2018-11-13 | 长虹美菱股份有限公司 | A kind of wind cooling refrigerator and its control method |
| CN106595215B (en) * | 2016-11-11 | 2019-08-02 | 青岛海尔股份有限公司 | The defrosting control method and device of wind cooling refrigerator |
| US10837694B2 (en) * | 2016-12-13 | 2020-11-17 | Whirlpool Corporation | Refrigeration appliance fan |
| CN106895642A (en) * | 2017-02-15 | 2017-06-27 | 合肥美的电冰箱有限公司 | The refrigeration air-supply amount control method of wind cooling refrigerator and wind cooling refrigerator |
| CN108151367B (en) * | 2017-12-25 | 2020-12-11 | 北京中矿博能节能科技有限公司 | Defrosting group control method for direct-cooling deep enthalpy heat-extraction ventilation air heat pump system |
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