CN114543415A - Control method of refrigerator - Google Patents
Control method of refrigerator Download PDFInfo
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- CN114543415A CN114543415A CN202011359178.7A CN202011359178A CN114543415A CN 114543415 A CN114543415 A CN 114543415A CN 202011359178 A CN202011359178 A CN 202011359178A CN 114543415 A CN114543415 A CN 114543415A
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- control stage
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- compressor
- control
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 235000013305 food Nutrition 0.000 claims abstract description 36
- 238000011217 control strategy Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010257 thawing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 7
- 230000002035 prolonged effect Effects 0.000 description 7
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 235000013372 meat Nutrition 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000009920 food preservation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Images
Classifications
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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
-
- 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
- F25D17/062—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 in household 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
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
- F25D25/024—Slidable shelves
- F25D25/025—Drawers
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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
-
- 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
-
- 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)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a control method of a refrigerator. The refrigerator comprises a storage chamber, a compressor and a door body for opening and closing the storage chamber, wherein the compressor is a variable frequency compressor, the refrigerator is provided with a first control stage, and the first control stage is used for controlling the frequency of the compressor according to newly-placed articles in the storage chamber; and the control method of the refrigerator includes: detecting the temperature of the articles in the storage room; judging whether the door body is opened or not; after the door body is opened and closed, determining whether a newly-placed article is in the storage chamber or not according to the acquired change condition of the temperature of the article; and when newly put articles exist in the storage room, determining the condition of the newly put articles, and controlling the refrigerator to perform the first control stage. The refrigerator can be sensitive to food just put in, can quickly sense the temperature change of the food, and can refrigerate the food as soon as possible so as to better preserve the food.
Description
Technical Field
The invention relates to the field of refrigeration and storage, in particular to a control method of a refrigerator.
Background
At present, with the increasingly developing society and the increasing living standard of people, the rhythm of life of people is faster and faster, so that people are willing to buy a lot of food to place in a refrigerator, and various refrigerators become one of the indispensable household appliances in daily life of people. The refrigerating power, the fresh-keeping degree (the water loss degree in unit time) and the energy-saving effect of the refrigerator of the frequency conversion refrigerator are all important indexes for measuring the quality of the refrigerator. The existing control method has the advantages that the outdoor environment temperature is high, the rotating speed of the press during operation is high, the ring temperature is low, and the rotating speed of the press during operation is low; the gear of the freezing chamber is high, the operating speed of the press is low, the gear of the freezing chamber is low, and the operating speed of the press is high. This control is relatively coarse.
Moreover, the inventors have also found that: the prior freezing sensor is generally an NTC, and a temperature sensing probe is arranged on a foaming layer. Insensitivity to just inserting food, waiting for a perceived temperature change, the food may miss the optimal cooling time. Furthermore, the inventor also finds that the frequent start and stop of the refrigerator and the prolonged stop time can accelerate the water loss of meat food, and are not beneficial to the preservation of the food.
Disclosure of Invention
The invention aims to overcome at least one defect of the existing refrigerator storage, and provides a control method of the refrigerator, which can be sensitive to food just put in, can quickly sense the temperature change of the food, and can refrigerate the food as soon as possible so as to better preserve the food.
The refrigerator comprises a storage compartment, a compressor and a door body for opening and closing the storage compartment, wherein the compressor is a variable frequency compressor, the refrigerator is provided with a first control stage, and the first control stage is to control the frequency of the compressor according to newly put articles in the storage compartment; and the control method of the refrigerator includes:
detecting the temperature of the articles in the storage room;
judging whether the door body is opened or not;
after the door body is opened and closed, determining whether a newly-placed article exists in the storage compartment or not according to the acquired temperature change condition of the article;
and when newly put articles exist in the storage room, determining the condition of the newly put articles, and controlling the refrigerator to perform the first control stage.
Optionally, the step of detecting the temperature of the articles in the storage room is to detect the temperature of food at a plurality of positions in the storage room so as to determine the condition of newly-placed articles according to the number of positions with changed temperature and the degree of the changed temperature;
the first control stage controls the compressor to operate at a frequency corresponding to the condition of the newly input article according to the relationship between the condition of the newly input article and the frequency of the compressor.
Optionally, when it is determined that no newly-placed articles are in the storage compartment according to the acquired change condition of the temperature of the articles, controlling the refrigerator to operate according to a control strategy before the door body is opened.
Optionally, the refrigerator further has a second control stage and a third control stage, the second control stage is to control the compressor according to a conventional variable frequency control strategy of the refrigerator, and the third control stage is to operate the compressor according to a lowest operation frequency allowed to operate when the compressor meets a start-stop condition;
when the change value of the temperature of the articles is larger than or equal to a first preset value, determining that the articles newly put into the storage chamber are arranged; when the variation value of the temperature of the articles is smaller than a first preset value and is larger than or equal to a second preset value, controlling the refrigerator to perform the second control stage; otherwise, controlling the refrigerator to carry out the third control phase.
Optionally, the control method of the refrigerator further includes:
judging whether the refrigerator is in the first control stage before the door body is opened;
when the refrigerator is in the first control stage before the door body is opened, and after the door body is opened and closed, the refrigerator needs to be controlled to carry out a new first control stage, the compressor is controlled to operate according to the larger frequency of the two first control stages, or the compressor is enabled to operate according to the highest operation frequency allowed to operate;
when the refrigerator is in the first control stage before the door body is opened, and after the door body is opened and closed and the refrigerator needs to be controlled to perform the second control stage or the third control stage, the refrigerator continues to perform the first control stage before the door body is opened, and does not perform the second control stage or the third control stage.
Optionally, the change of the temperature of the article is a change of the temperature of the article relative to a preset temperature;
after the door body is opened and closed, whether newly-placed articles exist in the storage compartment or not is determined according to the acquired temperature change condition of the articles within the preset time.
Optionally, the refrigerator is further provided with an air supply fan, and the air supply fan is configured to promote the cooling air flow to flow into the storage compartment;
the first control stage also comprises the step of controlling the rotating speed of the air supply fan according to newly put articles in the storage compartment;
the third control stage further includes operating the supply fan at a minimum rotational speed while the compressor is operating.
Optionally, the control method of the refrigerator further includes:
controlling the refrigerator to carry out the second control stage when the refrigerator is powered on for the first time and the compressor is not started or stopped;
and when the refrigerator is subjected to the second control stage or the third control stage, the refrigerator is allowed to defrost, and after the defrosting of the refrigerator is finished, the refrigerator is controlled to carry out the second control stage.
Optionally, after the first control stage or the second control stage is finished and the door body is not opened, the refrigerator is controlled to perform the third control stage.
Optionally, the conventional frequency conversion control strategy of the refrigerator includes: detecting the space temperature in the storage room and the ambient temperature of the refrigerator; controlling the compressor to operate according to the corresponding frequency according to the relationship between the space temperature and the ambient temperature and the frequency of the compressor;
in the second control stage and the third control stage, the on-off of the compressor is controlled according to the space temperature in the storage compartment.
According to the control method of the refrigerator, the refrigerator is sensitive to food which is just put in, the temperature change of the food can be sensed quickly, the food can be refrigerated as soon as possible, the food can be stored better, namely, the food passes through the ice crystal belt through quick refrigeration, and the fresh-keeping effect is achieved.
Furthermore, in the control method of the refrigerator, because the second control stage and the third control stage are provided, the temperature in the storage compartment of the refrigerator can be quickly returned after the door body is opened in the second control stage; the third control stage can be a temperature maintaining stage, the refrigerating time is prolonged as much as possible, the preservation effect is achieved, namely the refrigerating time of the press is prolonged, frequent starting and shutdown time are prevented from being prolonged, the water loss of meat food is accelerated, and the food preservation is not facilitated.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of a refrigerator according to one embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a refrigerator according to one embodiment of the present invention;
FIG. 3 is a schematic view of the installation of the temperature sensing device of FIG. 2;
fig. 4 is a schematic view of a control method of a refrigerator according to one embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic structural view of a refrigerator according to one embodiment of the present invention; the embodiment provides a refrigerator at first, can realize the high accuracy control to the inside temperature of refrigerator and the temperature of inside article, guarantees that refrigerating system in time opens, satisfies the storage demand of article. As shown in fig. 1 and referring to fig. 2 and 3, the refrigerator 100 may generally include: a cabinet 110, a door 120, and a refrigeration system. Wherein, a storage compartment 111 is defined inside the case body 110. The number and the structure of the storage compartments 111 can be configured according to requirements, and the storage compartments 111 can be configured into a refrigerating space, a freezing space, a temperature changing space or a fresh keeping space according to different purposes. Each storage compartment 111 may be divided into a plurality of storage regions by partitions, and the storage regions may store articles by racks or drawers. The door 120 is disposed on a front surface of the cabinet 110 to close the storage compartment 111. The door bodies 120 may be disposed corresponding to the storage compartments 111, that is, one or more door bodies 120 may correspond to each storage compartment 111. The number of the storage compartments 111 and the door 120 and the function of the storage compartments 111 can be selected according to the actual situation. The door 120 may be pivotally disposed on a front surface of the cabinet 110, and may also be opened in a drawer manner. A drawer 150 may be provided in the storage compartment of the refrigerator 100 of the present embodiment.
An air supply system is arranged in the box body 110, and the air supply system is provided with an air supply fan. The refrigerating system is arranged in the box body and comprises a compressor, an evaporator and the like, and the compressor is preferably a variable frequency compressor. The supply fan causes the airflow to flow through the evaporator to be cooled and then causes the airflow for cooling to enter the storage compartment 111, i.e., the supply fan is configured to cause the airflow for cooling to flow into the storage compartment 111.
As shown in fig. 2, the refrigerator 100 may be provided with a temperature detection device 300 at the rear of the storage compartment 111, and the temperature detection device 300 may be provided at the left rear or right rear of the storage compartment 111. The temperature detection device 300 is disposed at the left rear portion or the right rear portion of the storage compartment 111, so as to accurately detect the internal temperature of the storage compartment 111 and/or the temperature of the internal articles from top to bottom. The air outlets 112 may be disposed on both the left rear portion and the right rear portion of the storage compartment 111, and the temperature detection device 300 may be disposed on the left side of the left air outlet 112 or the right side of the right air outlet 112. The temperature detection device 300 may be disposed around the air outlet 112 of the storage compartment 111, and may prevent condensation from occurring on the surface of the sensor lens of the temperature detection device 300 when the air supply fan is operated to supply air.
The temperature detection device 300 may include a matrix infrared sensor, which is an active detection module and can directly detect the surface temperature of the object after being powered on. Further alternatively, the temperature detecting device 300 projects a circular area toward the inside of the drawer 150, and the actual effective detecting area is a square area after energy compensation. That is, the energy value in the edge region is multiplied by an amplification factor, so that the energy area is changed from a fan shape to an approximate square shape, and the data acquisition is facilitated. The area of the bottom surface of the storage compartment 111 or the drawer 150 is smaller than or equal to the projection area of the temperature detection device 300. For example, the area of the bottom surface of the drawer 150 in this embodiment is smaller than or equal to the projection area of the temperature detection device 300.
The temperature detecting device 300 is projected in a matrix form so as to more accurately sense the temperatures of different positions of the drawer 150, i.e. can detect a plurality of temperatures at a plurality of positions. In order to reduce the occupied volume, the temperature detection device 300 is half-embedded in the rear part of the storage compartment 111. Occupying as little volume as possible in the refrigerator 100, providing a large projected area in a limited space. As shown in fig. 3, a mounting groove 400 may be formed at the rear of the storage compartment 111, and the temperature detection device 300 may be disposed in the mounting groove 400. The included angle between the mounting surface 310 of the temperature detection device 300 and the vertical surface is a first angle, the included angle between the mounting surface 310 of the temperature detection device 300 and the horizontal plane is a second angle, and the first angle and the second angle are both 20 degrees to 45 degrees. For example, when the temperature detection device 300 may be disposed on the left side of the left air outlet 112, the detection direction of the temperature detection device 300 faces not only downward but also rightward, so as to achieve almost complete coverage of the drawer 150, and detect the temperatures of articles placed at different positions to perform corresponding cooling. For example, a plurality of sub-regions are divided into the projection area, and the overall temperature of the articles in the storage compartment 111 is determined according to the temperature values of the plurality of sub-regions.
Fig. 4 is a schematic diagram of a control method of a refrigerator according to one embodiment of the present invention. As shown in fig. 4, an embodiment of the present invention further provides a control method of a refrigerator, where the refrigerator has a first control stage, and the first control stage is to control the frequency of a compressor according to a newly-placed article in the storage compartment 111. And the control method of the refrigerator includes: detecting the temperature of the articles in the storage compartment 111; judging whether the door body 120 is opened; after the door body 120 is opened and closed, whether newly-placed articles exist in the storage compartment 111 is determined according to the acquired temperature change condition of the articles; when a newly inserted article is present in the storage compartment 111, the condition of the newly inserted article is determined, and the refrigerator is controlled to perform a first control stage. The control method can be sensitive to the food just put in, quickly sense the temperature change of the food, refrigerate the food as soon as possible, and better preserve the food, namely, quickly refrigerate the food to pass through the ice crystal belt, and achieve the fresh-keeping effect.
Specifically, the detection of the temperature of the articles in the storage compartment 111 is the detection of the temperature of the food at a plurality of positions in the storage compartment 111, so as to determine the condition of the newly-placed articles according to the number of positions where the temperature changes and the degree of the temperature change. For example, the matrix infrared sensor can detect food placed at different positions in the storage compartment 111 and quickly feed back the detected food to the controller of the refrigerator, so that the controller of the refrigerator can monitor temperature changes before and after opening doors at various positions in the freezing chamber of the refrigerator in real time, the temperature changes at different positions and the temperature change degree can determine the amount of the food to be placed, and the more the temperature difference change areas are, the larger the change degree is, the more the food to be placed is. The first control stage controls the compressor to operate at a frequency corresponding to the condition of the newly input article according to the relationship between the condition of the newly input article and the frequency of the compressor. In the first phase, if the compressor is not started, the compressor is started immediately. The more the temperature difference change area is, the larger the change degree is, and the higher the rotation speed of the compressor is. The temperature difference change region, the degree of change, the condition of the newly inserted article, and the frequency of the compressor may be written in the form of a table into the control program of the refrigerator.
In some embodiments of the present invention, the refrigerator further has a second control stage of controlling the compressor according to a conventional variable frequency control strategy of the refrigerator, and a third control stage of operating the compressor at a lowest operation frequency allowed to operate when the compressor satisfies a start-stop condition. When the variation value of the temperature of the article is greater than or equal to the first preset value, it is determined that the article newly put into the storage compartment 111 is present. When the variation value of the temperature of the articles is smaller than a first preset value and is larger than or equal to a second preset value, controlling the refrigerator to perform a second control stage; otherwise, the refrigerator is controlled to perform a third control stage, and the refrigerator only needs to provide control for maintaining constant freezer compartment temperature.
Because the second control stage and the third control stage are provided, the temperature in the storage compartment 111 of the refrigerator can be quickly returned to the temperature after the door body 120 is opened in the second control stage; the third control stage can be a temperature maintaining stage, the refrigerating time is prolonged as much as possible, the preservation effect is achieved, namely the refrigerating time of the press is prolonged, frequent starting and shutdown time are prevented from being prolonged, the water loss of meat food is accelerated, and the food preservation is not facilitated.
In some embodiments of the present invention, the control method of the refrigerator further includes: judging whether the refrigerator is performing a first control stage before the door 120 is opened; when the refrigerator is in the first control stage before the door body 120 is opened, and after the door body 120 is opened and closed, the refrigerator needs to be controlled to perform a new first control stage, the compressor is controlled to operate according to the larger frequency of the two first control stages, or the compressor is operated according to the highest operation frequency allowed to operate; when the refrigerator is in the first control stage before the door 120 is opened, and after the door 120 is opened and closed, the refrigerator needs to be controlled to perform the second control stage or the third control stage, the first control stage before the door 120 is opened is continued, and the second control stage or the third control stage is not performed. The food which is newly put in each time can be ensured to be rapidly refrigerated, and the food passes through the ice crystal belt, so that the fresh-keeping effect is achieved. Namely, the food which is newly put in last time is prevented from being completely cooled and is put in again, and the food is ensured to pass through the ice crystal belt, so that the fresh-keeping effect is achieved. In some alternative embodiments of the present invention, when it is determined that there is no newly inserted article in the storage compartment 111 according to the obtained change of the temperature of the article, the refrigerator is controlled to operate according to the control strategy before the door 120 is opened.
In some embodiments of the present invention, the change in the temperature of the article is a change in the temperature of the article relative to a predetermined temperature. The temperature of the articles in the storage compartment 111 is detected using a matrix infrared sensor. After the door 120 is opened and closed, whether a newly-placed article is in the storage compartment 111 is determined according to the acquired change condition of the temperature of the article within a preset time, for example, within 10 s. In some embodiments of the present invention, if the time interval between two door openings is smaller than the preset value, the control is performed according to the temperature detection result of the door closing. In some alternative embodiments of the present invention, the change of the temperature of the article is a change of the temperature of the article relative to the temperature of the article in the storage compartment 111 before the door 120 is opened.
In some embodiments of the present invention, the first control stage further comprises controlling the rotation speed of the air supply fan according to the newly-placed articles in the storage compartment 111; the third control phase also includes operating the supply fan at a minimum rotational speed while the compressor is operating. The control method of the refrigerator further includes: judging whether the refrigerator is powered on for the first time and judging whether the compressor is started or stopped; and controlling the refrigerator to perform a second control stage when the refrigerator is powered on for the first time and the compressor is not started or stopped. And when the refrigerator is subjected to the second control stage or the third control stage, the refrigerator is allowed to defrost, and after the defrosting of the refrigerator is finished, the refrigerator is controlled to be subjected to the second control stage.
In some embodiments of the present invention, after the first control stage or the second control stage is finished and the door 120 is not opened, the refrigerator is controlled to perform the third control stage, and the refrigerator only needs to provide control for maintaining a constant freezer temperature.
In some embodiments of the present invention, a conventional frequency conversion control strategy for a refrigerator includes: the temperature of the space in the storage compartment 111 and the ambient temperature of the refrigerator are detected. And controlling the compressor to operate at the corresponding frequency according to the relationship between the space temperature and the ambient temperature and the frequency of the compressor. In the second control stage and the third control stage, the start and stop of the compressor are controlled according to the space temperature in the storage compartment 111. In the first control phase, the compressor is stopped according to the space temperature in the storage compartment 111.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A control method of a refrigerator comprises a storage chamber, a compressor and a door body for opening and closing the storage chamber, wherein the compressor is a variable frequency compressor, and the refrigerator is characterized by comprising a first control stage, wherein the first control stage is to control the frequency of the compressor according to newly-placed articles in the storage chamber; and the control method of the refrigerator includes:
detecting the temperature of the articles in the storage room;
judging whether the door body is opened or not;
after the door body is opened and closed, determining whether a newly-placed article exists in the storage compartment or not according to the acquired temperature change condition of the article;
and when newly put articles exist in the storage room, determining the condition of the newly put articles, and controlling the refrigerator to perform the first control stage.
2. The control method of a refrigerator according to claim 1, wherein the detecting of the temperature of the articles in the storage compartment is detecting of the temperature of food at a plurality of positions in the storage compartment to determine the condition of newly put articles according to the number of positions where the temperature is changed and the degree of the temperature change;
the first control stage controls the compressor to operate at a frequency corresponding to the condition of the newly input article according to the relationship between the condition of the newly input article and the frequency of the compressor.
3. The control method of a refrigerator according to claim 1,
and controlling the refrigerator to operate according to a control strategy before the door body is opened when the situation that the temperature of the articles changes is obtained and no newly-placed articles are in the storage chamber.
4. The control method of the refrigerator according to claim 1, wherein the refrigerator further has a second control stage of controlling the compressor according to a conventional variable frequency control strategy of the refrigerator, and a third control stage of operating the compressor at a lowest operation frequency allowed to operate when the compressor satisfies a start-stop condition;
when the change value of the temperature of the articles is larger than or equal to a first preset value, determining that the articles newly put into the storage chamber are arranged; when the variation value of the temperature of the articles is smaller than a first preset value and is larger than or equal to a second preset value, controlling the refrigerator to perform the second control stage; otherwise, controlling the refrigerator to carry out the third control phase.
5. The method of controlling a refrigerator according to claim 4, further comprising:
judging whether the refrigerator is in the first control stage before the door body is opened;
when the refrigerator is in the first control stage before the door body is opened, and after the door body is opened and closed, the refrigerator needs to be controlled to carry out a new first control stage, the compressor is controlled to operate according to the larger frequency of the two first control stages, or the compressor is enabled to operate according to the highest operation frequency allowed to operate;
when the refrigerator is in the first control stage before the door body is opened, and after the door body is opened and closed and the refrigerator needs to be controlled to perform the second control stage or the third control stage, the refrigerator continues to perform the first control stage before the door body is opened, and does not perform the second control stage or the third control stage.
6. The control method of a refrigerator according to claim 1,
the change condition of the temperature of the article is the change condition of the temperature of the article relative to the preset temperature;
detecting the temperature of the articles in the storage room by using a matrix infrared sensor;
after the door body is opened and closed, whether newly-placed articles exist in the storage compartment or not is determined according to the acquired temperature change condition of the articles within the preset time.
7. The control method of the refrigerator according to claim 4, wherein the refrigerator further has a supply air blower configured to cause the cooling air flow to flow into the storage compartment;
the first control stage also comprises the step of controlling the rotating speed of the air supply fan according to newly put articles in the storage compartment;
the third control stage further includes operating the supply fan at a minimum rotational speed while the compressor is operating.
8. The method of controlling a refrigerator according to claim 4, further comprising:
controlling the refrigerator to carry out the second control stage when the refrigerator is powered on for the first time and the compressor is not started or stopped;
and when the refrigerator is subjected to the second control stage or the third control stage, the refrigerator is allowed to defrost, and after the defrosting of the refrigerator is finished, the refrigerator is controlled to carry out the second control stage.
9. The control method of a refrigerator according to claim 4 or 8,
and after the first control stage or the second control stage is finished and the door body is not opened, controlling the refrigerator to perform the third control stage.
10. The control method of a refrigerator according to claim 4,
the conventional frequency conversion control strategy of the refrigerator comprises the following steps: detecting the space temperature in the storage room and the ambient temperature of the refrigerator; controlling the compressor to operate according to the corresponding frequency according to the relationship between the space temperature and the ambient temperature and the frequency of the compressor;
in the second control stage and the third control stage, the start and stop of the compressor are controlled according to the space temperature in the storage compartment;
and in the first control stage, the compressor is controlled to stop according to the space temperature in the storage compartment.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04306474A (en) * | 1991-04-03 | 1992-10-29 | Matsushita Refrig Co Ltd | Controller for freezing refrigerator |
| CN104990358A (en) * | 2015-06-26 | 2015-10-21 | 青岛海尔股份有限公司 | Partition refrigeration control method and device for refrigerating chamber of refrigerator |
| CN106247728A (en) * | 2016-07-29 | 2016-12-21 | 合肥华凌股份有限公司 | Control method, control device and refrigerator |
| CN106766649A (en) * | 2016-11-23 | 2017-05-31 | 青岛海尔股份有限公司 | For detecting the method that whether temperature anomaly article is put into refrigerator |
| CN110864479A (en) * | 2018-08-28 | 2020-03-06 | 青岛海尔股份有限公司 | Refrigeration control method of refrigerating chamber of refrigerator and refrigerator |
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2020
- 2020-11-27 CN CN202011359178.7A patent/CN114543415B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04306474A (en) * | 1991-04-03 | 1992-10-29 | Matsushita Refrig Co Ltd | Controller for freezing refrigerator |
| CN104990358A (en) * | 2015-06-26 | 2015-10-21 | 青岛海尔股份有限公司 | Partition refrigeration control method and device for refrigerating chamber of refrigerator |
| CN106247728A (en) * | 2016-07-29 | 2016-12-21 | 合肥华凌股份有限公司 | Control method, control device and refrigerator |
| CN106766649A (en) * | 2016-11-23 | 2017-05-31 | 青岛海尔股份有限公司 | For detecting the method that whether temperature anomaly article is put into refrigerator |
| CN110864479A (en) * | 2018-08-28 | 2020-03-06 | 青岛海尔股份有限公司 | Refrigeration control method of refrigerating chamber of refrigerator and refrigerator |
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