CN106766487B - Control method of refrigerator - Google Patents
Control method of refrigerator Download PDFInfo
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- CN106766487B CN106766487B CN201611235036.3A CN201611235036A CN106766487B CN 106766487 B CN106766487 B CN 106766487B CN 201611235036 A CN201611235036 A CN 201611235036A CN 106766487 B CN106766487 B CN 106766487B
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 60
- 238000005057 refrigeration Methods 0.000 claims description 34
- 230000009191 jumping Effects 0.000 claims description 5
- 238000010257 thawing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 abstract description 22
- 238000007710 freezing Methods 0.000 abstract description 22
- 238000013021 overheating Methods 0.000 description 9
- 238000004781 supercooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
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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
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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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
- F25D29/005—Mounting of control devices
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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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- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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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)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a control method of a refrigerator, the refrigerator comprises a temperature-changing chamber, a refrigerating system, an air duct, a fan, a controller, a heating element arranged in the air duct, a first temperature sensor arranged on the upper side of the temperature-changing chamber and used for sensing the temperature of the upper side of the temperature-changing chamber, and a second temperature sensor arranged on the lower side of the temperature-changing chamber and used for sensing the temperature of the lower side of the temperature-changing chamber, wherein in the process that the temperature-changing chamber is converted into a cold storage mode or an ice temperature mode from a freezing mode, on one hand, the heating element and the fan are started to provide heat for the temperature-changing chamber so as to accelerate the switching time of the temperature-changing; on the other hand, when the temperature difference of the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, the controller controls the heating element to stop, and meanwhile, the fan is continuously started to enable the temperature in the variable temperature chamber to be uniform, so that the freshness of the food in the variable temperature chamber is favorably kept.
Description
Technical Field
The invention relates to the field of refrigeration equipment, in particular to a control method of a refrigerator, wherein a variable temperature chamber can prevent the temperature in the variable temperature chamber from being uneven in the process of converting a freezing mode into a refrigerating mode or an ice temperature mode.
Background
The refrigerator is one of the essential household appliances of many families, provides convenience for the life of people, and along with the development of the refrigerator technology and the diversification of the demands of consumers, the refrigerator with the temperature-changing chamber appears to meet the demands of the consumers.
In the process of converting a freezing mode into a refrigerating mode or an ice temperature mode, part of the existing refrigerator with the temperature-changing chamber converts the refrigerator into the refrigerating mode or the ice temperature mode in a natural heat exchange mode, but the existing refrigerator with the temperature-changing chamber has too long downtime and cannot meet the timely requirement of a user; the other part is that a heating element is arranged in the temperature-changing chamber to provide heat for the temperature-changing chamber in the process of converting the temperature-changing chamber from the freezing mode to the refrigerating mode or the ice-temperature mode so as to enable the temperature in the temperature-changing chamber to rapidly rise, but local overheating in the temperature-changing chamber is easily caused, and the temperature sensed by a temperature sensor in the temperature-changing chamber is inaccurate.
In view of the above, it is necessary to provide a new control method for a refrigerator to solve the above problems.
Disclosure of Invention
The invention aims to provide a refrigerator and a control method thereof, wherein the temperature of a temperature changing chamber can be prevented from being uneven in the temperature changing chamber in the process of switching from a freezing mode to a refrigerating mode or an ice temperature mode.
In order to achieve the purpose, the invention adopts the following technical scheme: a refrigerator comprises a temperature-changing chamber, a refrigerating system for providing cold for the temperature-changing chamber, an air duct and a fan for conveying the cold generated by the refrigerating system into the temperature-changing chamber, and a controller, wherein the fan and the refrigerating system are electrically connected with the controller; the heating element is a defrosting heating wire arranged close to the evaporator; when the heating element is started to provide heat for the temperature changing chamber, the fan is started synchronously.
In order to achieve the above object, the present invention further provides a control method for controlling the refrigerator, the control method comprising the steps of:
s1: when the set mode of the temperature-changing chamber is an ice temperature mode or a cold storage mode, judging whether the temperature equalizing of the temperature-changing chamber is lower than a first preset temperature, if so, stopping the refrigeration system, starting the heating element and the fan, and jumping to the step S2; if not, controlling the operation of the refrigeration system according to the set mode;
s2: judging whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, if so, stopping the heating element, and continuously operating the fan; if not, the step S3 is operated;
s3: judging whether the temperature equalization in the temperature changing chamber is not lower than a second preset temperature, if so, stopping the heating element and the fan; if not, the heating element and the fan are started and the process goes to step S2.
As a further improved technical solution of the present invention, after the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor in step S2 is higher than the first preset temperature and the heating element is shut down, the control method further includes the following steps:
s4: judging whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is lower than a second preset temperature difference, if so, jumping to step S3; if not, the heating element keeps a shutdown state, and the fan keeps an operation state.
As a further improved technical solution of the present invention, the second preset temperature is a shutdown temperature corresponding to the setting mode or a temperature lower than the shutdown temperature by a predetermined temperature value.
As a further improved technical solution of the present invention, when the setting mode of the temperature-varying chamber is the ice temperature mode or the refrigeration mode and the temperature equalization of the temperature-varying chamber is not lower than the first preset temperature in step S1, before controlling the operation of the refrigeration system according to the setting mode, the method further includes the following steps:
s11: judging whether the temperature difference sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, if so, starting the fan, and keeping the refrigerating system and the heating element in a shutdown state; if not, the controller controls the operation of the refrigeration system according to the set mode.
As a further improved technical solution of the present invention, after the fan is started in step S11, the method further includes the following steps:
s12: judging whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is lower than a second preset temperature difference or not, if so, controlling the operation of the refrigeration system by the controller according to the set mode; if not, the fan continues to operate.
As a further improved technical scheme of the invention, the upper side of the temperature-changing chamber is provided with an air inlet communicated with the air channel, and the lower side of the temperature-changing chamber is provided with an air return inlet communicated with the air channel; in step S1, it is determined whether the temperature of the variable temperature chamber is lower than the first preset temperature, and it is also determined whether the temperature sensed by the first temperature sensor is lower than the temperature sensed by the second temperature sensor.
As a further improved technical solution of the present invention, in step S2, it is also required to determine whether the temperature sensed by the first temperature sensor is higher than the temperature sensed by the second temperature sensor while determining whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference.
As a further improved technical solution of the present invention, the temperature equalization is an average value of the temperature sensed by the first temperature sensor and the temperature sensed by the second temperature sensor.
The invention has the beneficial effects that: in the process of converting the variable temperature chamber from the freezing mode to the refrigerating mode or the ice temperature mode, on one hand, the heating element and the fan are started to provide heat for the variable temperature chamber so as to shorten the switching time of the variable temperature chamber and facilitate the use of a user; on the other hand, when the temperature difference of the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, the controller controls the heating element to stop, and meanwhile, the fan is continuously started to enable the temperature in the variable temperature chamber to be uniform, so that the freshness of food in the variable temperature chamber is favorably kept, and meanwhile, the phenomenon of local overheating of the variable temperature chamber can be prevented.
Drawings
Fig. 1 is a flowchart of a control method of a refrigerator in the present invention.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings, and fig. 1 shows a preferred embodiment of the present invention.
The invention provides a refrigerator which comprises a temperature changing chamber, a refrigerating system for providing cold for the temperature changing chamber, an air duct and a fan for conveying the cold generated by the refrigerating system into the temperature changing chamber, a heating element arranged in the air duct, a first temperature sensor arranged on the upper side of the temperature changing chamber and used for sensing the temperature in the temperature changing chamber, a second temperature sensor arranged on the lower side of the temperature changing chamber and used for sensing the temperature in the temperature changing chamber, and a controller.
The fan, the refrigerating system, the heating element, the first temperature sensor and the second temperature sensor are electrically connected with the controller.
According to the invention, the first temperature sensor and the second temperature sensor which are positioned at different positions in the temperature changing chamber are arranged, on one hand, the controller can judge whether the temperature in the temperature changing chamber is uniform or not by comparing the temperatures sensed by the first temperature sensor and the second temperature sensor, so that the phenomenon of local overheating or supercooling of the temperature changing chamber is prevented; on the other hand, the controller calculates the temperature equalization of the temperature-variable chamber through the temperatures sensed by the first temperature sensor and the second temperature sensor, the temperature equalization refers to the average value of the temperature sensed by the first temperature sensor and the temperature sensed by the second temperature sensor, the start and stop of the refrigerating system, the heating element and the fan are controlled through the temperature equalization of the temperature-variable chamber, and the control is accurate.
Namely, when the operation mode of the temperature-changing chamber is a freezing mode, the controller controls the start and stop of the refrigerating system according to the temperature equalization in the temperature-changing chamber; when the temperature-changing chamber is switched to a refrigeration mode, the controller controls the starting and stopping of the refrigeration system according to the temperature equalization in the temperature-changing chamber; and when the temperature-changing chamber is switched to the ice temperature mode, the controller controls the starting and stopping of the refrigerating system according to the temperature equalization in the temperature-changing chamber.
When the set mode of the temperature-changing chamber is a cold storage mode or an ice temperature mode, the controller judges whether the operation mode of the temperature-changing chamber is a freezing mode according to whether the average temperature is lower than a first preset temperature, if so, the controller judges whether the temperature-changing chamber is switched to the cold storage mode or the ice temperature mode according to the average temperature in the process of switching the temperature-changing chamber from the freezing mode to the cold storage mode or the ice temperature mode, and if so, the controller controls the heating element and the fan to stop; if not, the heating element and the fan are controlled to be started to provide heat for the temperature-changing chamber, so that the switching process of the temperature-changing chamber is accelerated, and the use by a user is facilitated.
Because the temperature difference between the ice temperature mode and the refrigeration mode is small, the time required for switching the temperature-changing chamber from the ice temperature mode to the refrigeration mode in a natural temperature rise mode is short, and therefore, when the temperature-changing chamber is switched from the ice temperature mode to the refrigeration mode, a heating element does not need to be started to provide heat for the temperature-changing chamber.
Furthermore, the upper side of the temperature changing chamber is provided with an air inlet communicated with the air channel, and the lower side of the temperature changing chamber is provided with an air return inlet communicated with the air channel.
When the temperature-changing chamber is in a freezing mode, the temperature of cold air entering the temperature-changing chamber from the air inlet is low, the temperature of cold air entering the air duct from the air return inlet after heat exchange with food in the temperature-changing chamber is high, the first temperature sensor and the air inlet are arranged on the upper side of the temperature-changing chamber, the air return inlet and the second temperature sensor are arranged on the lower side of the temperature-changing chamber, and therefore when the operation mode of the temperature-changing chamber is in the freezing mode, the temperature sensed by the first temperature sensor is lower than the temperature sensed by the second temperature sensor. Therefore, when the set mode of the temperature-changing chamber is a cold storage mode or an ice temperature mode, the controller determines whether the operation mode of the temperature-changing chamber is a freezing mode according to whether the average temperature is lower than a first preset temperature and whether the temperature sensed by the first temperature sensor is lower than the temperature sensed by the second temperature sensor, that is, when the average temperature is lower than the first preset temperature and the temperature sensed by the first temperature sensor is lower than the temperature sensed by the second temperature sensor, the operation mode of the temperature-changing chamber is the freezing mode.
In the process of supplying heat to the temperature-changing chamber by the heating element and the fan after starting, the temperature of hot air entering the temperature-changing chamber from the air inlet is higher, the temperature of hot air entering the air duct from the air return inlet after heat exchange with food in the temperature-changing chamber is lower, the first temperature sensor and the air inlet are both arranged at the upper side of the temperature-changing chamber, and the air return inlet and the second temperature sensor are both arranged at the lower side of the temperature-changing chamber, so that in the process of heating the heating element, the temperature sensed by the first temperature sensor is higher than that sensed by the second temperature sensor, and in the process of supplying heat to the temperature-changing chamber by starting the heating element, the controller judges whether the temperature of the temperature-changing chamber is uniform or not according to whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference or not and whether the temperature sensed by the first temperature sensor is higher than that sensed by the second temperature sensor That is, when the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference and the temperature sensed by the first temperature sensor is higher than the temperature sensed by the second temperature sensor, it indicates that the temperature in the variable temperature chamber is not uniform, and it is necessary to stop the heating element while keeping the fan running continuously to make the temperature in the variable temperature chamber more uniform.
In the embodiment, the heating element is a defrosting heating wire arranged close to the evaporator, so that the heating element for heating the temperature-changing chamber does not need to be additionally arranged, and the cost of the refrigerator is reduced.
The invention also provides a control method for controlling the refrigerator, wherein the temperature changing chamber has a freezing mode, an ice temperature mode and a cold storage mode, and the control method comprises the following steps:
s1: when the set mode of the temperature-changing chamber is a cold storage mode or an ice temperature mode, judging whether the temperature equalizing of the temperature-changing chamber is lower than a first preset temperature, if so, stopping the refrigeration system, starting the heating element and the fan, and jumping to the step S2; if not, controlling the operation of the refrigeration system according to the set mode;
the purpose of determining whether the temperature equalization of the temperature-changing chamber is lower than the first preset temperature in step S1 is to determine whether the operation mode of the refrigerator is the freezing mode, that is, whether the temperature-changing chamber needs to be switched from the freezing mode to the setting mode.
When the temperature equalization of the temperature-changing chamber is lower than the first preset temperature, the operation mode of the temperature-changing chamber is a freezing mode, the refrigerating system is stopped, and the heating element and the fan are started to provide heat for the temperature-changing chamber, so that the switching time of the temperature-changing chamber is shortened.
When the temperature equalization of the temperature change chamber is higher than the first preset temperature, the operation mode of the refrigerator is not the freezing mode, and the controller controls the operation of the refrigerating system according to the set mode.
Furthermore, an air inlet communicated with the air channel is formed in the upper side of the temperature-changing chamber, and an air return inlet communicated with the air channel is formed in the lower side of the temperature-changing chamber; in step S1, it is determined whether the temperature of the temperature-changing chamber is lower than a first preset temperature, and it is also determined whether the temperature sensed by the first temperature sensor is lower than the temperature sensed by the second temperature sensor; namely, when the temperature equalization chamber is lower than a first preset temperature and the temperature sensed by the first temperature sensor is lower than the temperature sensed by the second temperature sensor, the operation mode of the temperature change chamber is a freezing mode.
In the step S1, when the setting mode of the refrigerator is the cold storage mode or the ice temperature mode, and the temperature equalization of the temperature changing chamber is not lower than the first preset temperature, the method further includes the following steps before controlling the operation of the refrigeration system according to the setting mode:
s11: judging whether the temperature difference sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, if so, starting the fan, and keeping the refrigerating system and the heating element in a shutdown state; if not, the controller controls the operation of the refrigeration system according to a set mode.
When the temperature difference sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, the temperature in the temperature changing chamber is uneven, at the moment, if the heating element is started, the phenomenon of local overheating is easily caused, and the phenomenon of local supercooling is easily caused when the refrigerating system is started, so that the refrigerating system and the heating element are controlled to be in a stop state, and meanwhile, the fan is started to enable the temperature in the temperature changing chamber to be even.
When the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is not higher than a first preset temperature difference, the temperature in the variable temperature chamber is relatively uniform, and the controller directly controls the operation of the refrigeration system according to a set mode.
The method also comprises the following steps after the fan is started in the step S11:
s12: judging whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is lower than a second preset temperature difference or not, if so, controlling the operation of the refrigeration system by the controller according to a set mode; if not, the fan continues to operate.
When the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is lower than a second preset temperature difference, the temperature in the variable temperature chamber is relatively uniform, and the controller controls the refrigeration system to operate according to a set mode.
When the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is not lower than a second preset temperature difference, which indicates that the temperature in the variable temperature chamber is still uneven, the fan keeps in an operating state, so that the temperature in the variable temperature chamber is uniform, and the phenomenon of local overheating or supercooling in the variable temperature chamber is prevented.
In this embodiment, the first predetermined temperature is-5 ℃; the first preset temperature difference is 3 ℃; the second predetermined temperature difference is 1 deg.c.
S2: judging whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, if so, stopping the heating element, and continuously operating the fan; if not, step S3 is executed.
When the temperature difference between the temperature sensed by the first temperature sensor and the temperature sensed by the second temperature sensor is higher than the first preset temperature difference, the temperature in the temperature changing chamber is not uniform, if the heating element keeps the operation state, the phenomenon of local overheating in the temperature changing chamber is easily caused, and the fresh-keeping effect is influenced.
Furthermore, an air inlet communicated with the air channel is formed in the upper side of the temperature-changing chamber, and an air return inlet communicated with the air channel is formed in the lower side of the temperature-changing chamber; in step S2, it is determined whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, and it is also determined whether the temperature sensed by the first temperature sensor is higher than the temperature sensed by the second temperature sensor; that is, when the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference and the temperature sensed by the first temperature sensor is higher than the temperature sensed by the second temperature sensor, it indicates that the temperature in the variable temperature chamber is not uniform, and it is necessary to stop the heating element while keeping the fan running continuously to make the temperature in the variable temperature chamber more uniform.
S3: judging whether the temperature equalization in the temperature changing chamber is not lower than a second preset temperature, if so, stopping the heating element and the fan; if not, the heating element and the fan are started and the process goes to step S2.
If the temperature equalization in the temperature changing chamber is not lower than a second preset temperature, the temperature changing chamber is switched to a set mode from a freezing mode, so that the heating element and the fan are both stopped, and the controller controls the operation of the refrigerating system according to the set mode, so that the temperature changing chamber is in the set mode and is convenient for a user to use.
If the temperature equalization in the temperature changing chamber is lower than a second preset temperature, it indicates that the temperature changing chamber is not switched to the set mode yet, and the temperature of the temperature changing chamber needs to be continuously heated, so that the heating element and the fan are both started, and the step S2 is skipped to ensure that the temperature in the temperature changing chamber is relatively uniform, and the phenomenon of local overheating is prevented.
The second preset temperature is a shutdown temperature corresponding to the set mode or a temperature lower than the shutdown temperature by a preset temperature value. When the set mode is a refrigeration mode, the second preset temperature refers to a refrigeration shutdown temperature or a temperature lower than the refrigeration shutdown temperature by a preset temperature value; and when the set mode is an ice temperature mode, the second preset temperature refers to an ice temperature shutdown temperature or a temperature lower than the ice temperature shutdown temperature by a preset temperature value.
In the present embodiment, the predetermined temperature value is 3.
Further, after the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than the first preset temperature and the heating element is shut down in step S2, the control method further includes the following steps:
s4: judging whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is lower than a second preset temperature difference, if so, jumping to step S3; if not, the heating element keeps a shutdown state, and the fan keeps an operation state.
When the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is lower than a second preset temperature difference, which indicates that the temperature in the temperature changing chamber is relatively uniform, the process goes to step S3, that is, whether the temperature changing chamber has been switched to the set mode is determined according to the temperature average in the temperature changing chamber and the second preset temperature, so that when the temperature changing chamber has been switched to the set mode, the heating element and the fan are controlled to stop.
When the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is not lower than a second preset temperature difference, the temperature in the temperature changing chamber is still uneven, if the heating element is started, the phenomenon of local overheating in the temperature changing chamber is easily caused, and the fresh-keeping effect is influenced.
When the set mode of the temperature change chamber is a refrigeration mode, controlling the operation of the refrigeration system according to the set mode means controlling the operation of the refrigeration system according to the refrigeration mode; when the set mode of the temperature changing chamber is the ice temperature mode, the control of the operation of the refrigeration system according to the set mode means that the operation of the refrigeration system is controlled according to the ice temperature mode.
In summary, in the process of switching from the freezing mode to the refrigerating mode or the freezing mode, on one hand, the heating element and the fan are started to provide heat for the temperature-changing chamber so as to shorten the switching time of the temperature-changing chamber, which is convenient for a user to use; on the other hand, when the temperature difference of the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, the controller controls the heating element to stop, and meanwhile, the fan is continuously started to enable the temperature in the variable temperature chamber to be uniform, so that the freshness of food in the variable temperature chamber is favorably kept, and meanwhile, the phenomenon of local overheating of the variable temperature chamber can be prevented.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. A control method of a refrigerator comprises a temperature-changing chamber, a refrigerating system for providing cold for the temperature-changing chamber, an air duct and a fan for conveying the cold generated by the refrigerating system into the temperature-changing chamber, a controller, a heating element arranged in the air duct, a first temperature sensor arranged on the upper side of the temperature-changing chamber and used for sensing the temperature of the upper side of the temperature-changing chamber, and a second temperature sensor arranged on the lower side of the temperature-changing chamber and used for sensing the temperature of the lower side of the temperature-changing chamber, wherein the fan, the refrigerating system, the heating element, the first temperature sensor and the second temperature sensor are all electrically connected with the controller, and the heating element is a defrosting heating wire arranged close to an evaporator; an air inlet communicated with the air channel is formed in the upper side of the temperature changing chamber, and an air return inlet communicated with the air channel is formed in the lower side of the temperature changing chamber; the method is characterized in that: the control method comprises the following steps:
s1: when the set mode of the temperature-changing chamber is an ice temperature mode or a cold storage mode, judging whether the temperature equalization of the temperature-changing chamber is lower than a first preset temperature, and judging whether the temperature sensed by a first temperature sensor is lower than the temperature sensed by a second temperature sensor; if the temperature equalization of the temperature-changing chamber is lower than a first preset temperature and the temperature sensed by the first temperature sensor is lower than the temperature sensed by the second temperature sensor, the refrigeration system is stopped, and the heating element and the fan are started and go to step S2; if the temperature equalization of the temperature change chamber is not lower than a first preset temperature, controlling the operation of the refrigeration system according to the set mode;
s2: judging whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, if so, stopping the heating element, and continuously operating the fan; if not, the step S3 is operated;
s3: judging whether the temperature equalization in the temperature changing chamber is not lower than a second preset temperature, if so, stopping the heating element and the fan; if not, the heating element and the fan are started and the process goes to step S2.
2. The control method according to claim 1, characterized in that: after the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than the first preset temperature and the heating element is shut down in the step S2, the control method further includes the following steps:
s4: judging whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is lower than a second preset temperature difference, if so, jumping to step S3; if not, the heating element keeps a shutdown state, and the fan keeps an operation state.
3. The control method according to claim 1, characterized in that: the second preset temperature is the shutdown temperature corresponding to the set mode or the temperature lower than the shutdown temperature by a preset temperature value.
4. The control method according to claim 1, characterized in that: in step S1, when the setting mode of the temperature-varying chamber is an ice temperature mode or a refrigeration mode, and the temperature equalization of the temperature-varying chamber is not lower than a first preset temperature, the method further includes the following steps before controlling the operation of the refrigeration system according to the setting mode:
s11: judging whether the temperature difference sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, if so, starting the fan, and keeping the refrigerating system and the heating element in a shutdown state; if not, the controller controls the operation of the refrigeration system according to the set mode.
5. The control method according to claim 4, characterized in that: the method also comprises the following steps after the fan is started in the step S11:
s12: judging whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is lower than a second preset temperature difference or not, if so, controlling the operation of the refrigeration system by the controller according to the set mode; if not, the fan continues to operate.
6. The control method according to claim 1, characterized in that: in step S2, it is determined whether the temperature difference between the temperatures sensed by the first temperature sensor and the second temperature sensor is higher than a first preset temperature difference, and it is also determined whether the temperature sensed by the first temperature sensor is higher than the temperature sensed by the second temperature sensor.
7. The control method according to claim 1, characterized in that: the temperature equalization is an average value of the temperature sensed by the first temperature sensor and the temperature sensed by the second temperature sensor.
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| CN107421208B (en) * | 2017-07-26 | 2019-11-01 | 合肥华凌股份有限公司 | Freezer compartment of refrigerator temperature control method, system, device, storage medium and refrigerator |
| CN107763960B (en) * | 2017-10-30 | 2020-01-31 | 合肥华凌股份有限公司 | Control method and control device of refrigeration mode, refrigeration equipment and storage medium |
| CN110411133B (en) * | 2018-04-26 | 2021-04-20 | 合肥华凌股份有限公司 | Temperature control method and device for double-temperature refrigeration electric appliance |
| CN110849067A (en) * | 2019-09-16 | 2020-02-28 | 长虹美菱股份有限公司 | Control method of refrigerator with ice temperature fresh-keeping function |
| CN110986476B (en) * | 2019-12-05 | 2022-03-04 | 合肥华凌股份有限公司 | Temperature control method and device, refrigeration equipment and computer readable storage medium |
| CN111493593B (en) * | 2020-04-27 | 2021-09-03 | 海信容声(广东)冷柜有限公司 | Refrigerated display cabinet and control method thereof |
| CN111609662B (en) * | 2020-04-30 | 2021-06-04 | 珠海格力电器股份有限公司 | Refrigerator control method and device, storage medium and refrigerator |
| CN113915891B (en) * | 2021-05-08 | 2022-12-16 | 海信冰箱有限公司 | Refrigerator and temperature control method thereof |
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