CN114935237A - Refrigerator defrosting system and control method - Google Patents
Refrigerator defrosting system and control method Download PDFInfo
- Publication number
- CN114935237A CN114935237A CN202210601154.0A CN202210601154A CN114935237A CN 114935237 A CN114935237 A CN 114935237A CN 202210601154 A CN202210601154 A CN 202210601154A CN 114935237 A CN114935237 A CN 114935237A
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- Prior art keywords
- defrosting
- refrigerating
- freezing
- air door
- refrigerator
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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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- 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
- F25D29/00—Arrangement or mounting of control or safety devices
-
- 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 discloses a refrigerator defrosting system and a control method, and relates to the technical field of refrigerator defrosting. The invention comprises an air duct, a refrigeration air door, a freezing air door, a heater, a fan, a control panel and a freezing chamber partition plate, wherein the refrigeration air door is positioned at the refrigeration part of the air duct; the freezing air door is positioned at the freezing part of the air duct; the heater is positioned at the lower part of the evaporator; the fan is positioned at the upper part of the evaporator; the refrigerating air door, the freezing air door, the heater and the fan are electrically connected with the refrigerator control panel; the freezing chamber partition plate is positioned between the evaporator space and the freezing storage chamber; the partition board of the freezing chamber is attached with a heat insulating layer for reducing the heat exchange between the evaporator space and the freezing chamber. In the invention, in a period of time after the refrigerator is defrosted, the large temperature difference between the refrigerating chamber and the evaporator is utilized to continuously supply cold energy for refrigerating on one hand, and defrosting is realized for the evaporator on the other hand, so that the heating time of the heater is shortened by reasonably utilizing energy, and the energy consumption is saved.
Description
Technical Field
The invention belongs to the technical field of refrigerator defrosting, and particularly relates to a refrigerator defrosting system and a control method.
Background
Defrosting of the air-cooled refrigerator is an indispensable state, and if the refrigerator is not defrosted for a long time, the refrigerating efficiency is reduced, and the energy consumption is increased. After the existing refrigerator enters a defrosting state, the heat of a defrosting heater is mainly utilized to defrost an evaporator. During defrosting, the heater is in a constantly on state, and the generated heat is more, which causes the temperature of the freezing chamber adjacent to the evaporator space to increase more. Therefore, after defrosting is finished, the compressor needs to operate for a long time, and more electric energy is consumed to reduce the temperature of the freezing chamber to the state before defrosting. The defrosting mode wastes more energy.
Disclosure of Invention
The invention aims to provide a refrigerator defrosting system and a control method, wherein after a refrigerator enters a defrosting state, the large temperature difference between a refrigerating chamber and an evaporator is utilized, so that cold energy is continuously supplied to the refrigerating chamber, defrosting of the evaporator is realized, the double purposes of refrigerating the refrigerating chamber and defrosting of the evaporator can be achieved by only providing little energy for the operation of a fan, and the problem of more energy waste in the existing defrosting mode is solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a refrigerator defrosting system which comprises an air duct, a refrigerating air door, a freezing air door, a heater, a fan, a control panel and a freezing chamber partition plate, wherein the air duct is provided with a plurality of air outlets;
the cold storage air door is positioned at the cold storage part of the air duct; the freezing air door is positioned at the freezing part of the air duct; the heater is positioned at the lower part of the evaporator; the fan is positioned at the upper part of the evaporator; the refrigerating air door, the freezing air door, the heater and the fan are all electrically connected with the refrigerator control panel; the freezing chamber partition plate is positioned between the evaporator space and the freezing storage chamber; the refrigerating chamber partition board is attached with a heat insulation layer for reducing heat exchange between the evaporator space and the refrigerating chamber.
As a preferable technical scheme, after the refrigerator meets defrosting conditions, the control panel controls the freezing air door to close so as to prevent air circulation of an evaporator space and a freezing chamber and reduce heat exchange; the control panel controls the opening of the refrigerating air door at the same time, so that the air circulation of the evaporator space and the refrigerating chamber carries out heat exchange.
The invention relates to a refrigerator defrosting control method, which comprises the following steps:
step S1: the control panel controls the compressor, the fan and the refrigerating air door to be in a closed state;
step S2: reducing the starting refrigeration temperature of the refrigerating chamber by 0.5 degrees to be used as the refrigerating starting refrigeration temperature Ton during the defrosting of the refrigerator; adding 0.5 degrees to the refrigeration stop temperature of the refrigerating chamber to obtain a refrigeration stop refrigeration temperature Toff during defrosting of the refrigerator;
step S3: the main control board detects whether the difference value between the refrigerating chamber refrigeration starting temperature and the evaporator sensor temperature Tz is larger than 10 degrees or not during defrosting, if yes, the step S4 is executed; if not, go to step S8;
step S4: the main control board detects whether the temperature Tc of the refrigerating chamber sensor is more than or equal to the refrigerating starting refrigerating temperature Ton in the defrosting period, if so, the step S5 is executed; if not, the step S3 is executed in a loop;
step S5: the main control board controls the fan to operate, and then step S6 is executed;
step S6: the main control board detects whether the temperature Tc of the refrigerating chamber sensor is less than or equal to the refrigerating stop refrigeration temperature Toff during defrosting, if so, the main control board controls the fan to stop running, and then the step S3 is executed in a circulating mode; if not, go to step S7;
step S7: detecting whether the refrigerating time is more than t1, if yes, executing step S8; if not, circularly executing the step S6;
step S8: the main control board controls the refrigeration air door to be closed, and controls the defrosting heater and the air fan to circularly run in a mode of opening for 10s and closing for 10 s;
step S9: during defrosting heater and fan interval operation, the main control board constantly detects the sensor temperature of defrosting, withdraws from the state of defrosting when sensor temperature more than or equal to 5 degrees, gets into the refrigeration state.
The invention has the following beneficial effects:
(1) in the invention, in a period of time after the refrigerator is defrosted, the large temperature difference between the refrigerating chamber and the evaporator is utilized to continuously supply cold energy for refrigerating on one hand, and defrosting is realized for the evaporator on the other hand, so that the heating time of the heater is shortened by reasonably utilizing energy, and the energy consumption is saved.
(2) The invention reduces the rising temperature of the freezing chamber during defrosting by shortening the heating time of the heater, and is more beneficial to food preservation.
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 schematic structural view of a refrigerator defrosting system according to the present invention;
fig. 2 is a flowchart of a refrigerator defrosting control method according to 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.
Referring to fig. 1, the invention is a defrosting system for a refrigerator, comprising an air duct, a refrigerating air door, a freezing air door, a heater, a fan, a control panel and a freezing chamber partition board;
the cold storage air door is positioned at the cold storage part of the air duct; the freezing air door is positioned at the freezing part of the air duct; the heater is positioned at the lower part of the evaporator; the fan is positioned at the upper part of the evaporator; the refrigerating air door, the freezing air door, the heater and the fan are electrically connected with the refrigerator control panel; the freezing chamber partition plate is positioned between the evaporator space and the freezing storage chamber; the partition board of the freezing chamber is attached with a heat-insulating layer for reducing the heat exchange between the space of the evaporator and the freezing chamber; after the refrigerator meets defrosting conditions, the control panel controls the freezing air door to close so as to prevent the air circulation of the evaporator space and the freezing chamber and reduce heat exchange; the control panel controls the opening of the refrigerating air door at the same time, so that the air circulation of the evaporator space and the refrigerating chamber carries out heat exchange; effectively utilizes the cold energy of each part in the refrigerator, shortens the heating time of the heater and avoids the waste of energy.
Referring to fig. 2, the present invention is a refrigerator defrosting control method, including the following steps:
step S1: the control panel controls the compressor, the fan and the freezing air door to be in a closed state;
step S2: reducing the starting refrigeration temperature of the refrigerating chamber by 0.5 degrees to be used as the refrigerating starting refrigeration temperature Ton during the defrosting of the refrigerator; adding 0.5 degrees to the refrigeration stop temperature of the refrigerating chamber to obtain a refrigeration stop refrigeration temperature Toff during defrosting of the refrigerator;
step S3: the main control board detects whether the difference value between the refrigerating chamber refrigeration starting temperature and the evaporator sensor temperature Tz is larger than 10 degrees or not during defrosting, if yes, the step S4 is executed; if not, go to step S8;
step S4: the main control board detects whether the temperature Tc of the refrigerating chamber sensor is more than or equal to the refrigerating starting refrigerating temperature Ton in the defrosting period, if so, the step S5 is executed; if not, the step S3 is executed in a loop;
step S5: the main control board controls the fan to operate, and then step S6 is executed;
step S6: the main control board detects whether the temperature Tc of the refrigerating chamber sensor is less than or equal to the refrigerating stop refrigeration temperature Toff during defrosting, if so, the main control board controls the fan to stop running, and then the step S3 is executed in a circulating mode; if not, go to step S7;
step S7: detecting whether the refrigerating time is more than t1, if yes, executing step S8; if not, the step S6 is executed in a loop;
step S8: the main control board controls the refrigeration air door to be closed, and controls the defrosting heater and the air fan to circularly run in a mode of opening for 10s and closing for 10 s;
step S9: during defrosting heater and fan interval operation, the main control board constantly detects the sensor temperature of defrosting, withdraws from the state of defrosting when sensor temperature more than or equal to 5 degrees, gets into the refrigeration state.
It should be noted that, in the above system embodiment, each included unit is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
In addition, it is understood by those skilled in the art that all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing associated hardware, and the corresponding program may be stored in a computer-readable storage medium.
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 understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. The utility model provides a refrigerator defrosting system, includes wind channel, cold-stored air door, freezing air door, heater, fan, control panel and freezer baffle, its characterized in that:
the cold storage air door is positioned at the cold storage part of the air duct; the freezing air door is positioned at the freezing part of the air duct; the heater is positioned at the lower part of the evaporator; the fan is positioned at the upper part of the evaporator; the refrigerating air door, the freezing air door, the heater and the fan are all electrically connected with the refrigerator control panel; the freezing chamber partition plate is positioned between the evaporator space and the freezing storage chamber; the refrigerating chamber partition board is attached with a heat insulation layer for reducing heat exchange between the evaporator space and the refrigerating chamber.
2. The defrosting system of a refrigerator as claimed in claim 1, wherein the control panel controls the freezing damper to close after the refrigerator meets the defrosting condition, so as to prevent the air circulation between the evaporator space and the freezing chamber and reduce the heat exchange; the control panel controls the opening of the refrigerating air door at the same time, so that the air circulation of the evaporator space and the refrigerating chamber carries out heat exchange.
3. The method for controlling defrosting of the refrigerator is characterized by comprising the following steps of:
step S1: the control panel controls the compressor, the fan and the refrigerating air door to be in a closed state;
step S2: reducing the starting refrigeration temperature of the refrigerating chamber by 0.5 degrees to be used as the refrigerating starting refrigeration temperature Ton during the defrosting of the refrigerator; adding 0.5 degrees to the refrigeration stop temperature of the refrigerating chamber to obtain a refrigeration stop refrigeration temperature Toff during defrosting of the refrigerator;
step S3: the main control board detects whether the difference value between the refrigerating chamber refrigeration starting temperature and the evaporator sensor temperature Tz is larger than 10 degrees or not during defrosting, if yes, the step S4 is executed; if not, go to step S8;
step S4: the main control board detects whether the temperature Tc of the refrigerating chamber sensor is more than or equal to the refrigerating starting refrigerating temperature Ton in the defrosting period, if so, the step S5 is executed; if not, the step S3 is executed in a loop;
step S5: the main control board controls the fan to operate, and then step S6 is executed;
step S6: the main control board detects whether the temperature Tc of the refrigerating chamber sensor is less than or equal to the refrigerating stop refrigeration temperature Toff during defrosting, if so, the main control board controls the fan to stop running, and then the step S3 is executed in a circulating mode; if not, go to step S7;
step S7: detecting whether the refrigerating time is more than t1, if yes, executing step S8; if not, the step S6 is executed in a loop;
step S8: the main control board controls the refrigeration air door to be closed, and controls the defrosting heater and the air fan to circularly run in a mode of opening for 10s and closing for 10 s;
step S9: during defrosting heater and fan interval operation, the main control board constantly detects the sensor temperature of defrosting, withdraws from the state of defrosting when sensor temperature more than or equal to 5 degrees, gets into the refrigeration state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210601154.0A CN114935237A (en) | 2022-05-30 | 2022-05-30 | Refrigerator defrosting system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210601154.0A CN114935237A (en) | 2022-05-30 | 2022-05-30 | Refrigerator defrosting system and control method |
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| CN114935237A true CN114935237A (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210601154.0A Pending CN114935237A (en) | 2022-05-30 | 2022-05-30 | Refrigerator defrosting system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116045599A (en) * | 2022-12-22 | 2023-05-02 | 珠海格力电器股份有限公司 | Dehumidification control method and device and low-temperature storage equipment |
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-
2022
- 2022-05-30 CN CN202210601154.0A patent/CN114935237A/en active Pending
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| JP2002062026A (en) * | 2000-08-22 | 2002-02-28 | Fujitsu General Ltd | Method for controlling defrost of electric refrigerator |
| CN101586898A (en) * | 2008-05-20 | 2009-11-25 | 海信（北京）电器有限公司 | Air-cooled refrigerator and defrosting method of same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116045599A (en) * | 2022-12-22 | 2023-05-02 | 珠海格力电器股份有限公司 | Dehumidification control method and device and low-temperature storage equipment |
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