CN102519219A - Refrigerator and control method for air door of refrigerator - Google Patents
Refrigerator and control method for air door of refrigerator Download PDFInfo
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- CN102519219A CN102519219A CN2011104434434A CN201110443443A CN102519219A CN 102519219 A CN102519219 A CN 102519219A CN 2011104434434 A CN2011104434434 A CN 2011104434434A CN 201110443443 A CN201110443443 A CN 201110443443A CN 102519219 A CN102519219 A CN 102519219A
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Abstract
The invention discloses a control method for an air door of a refrigerator and the refrigerator for implementing the method. The method comprises the following steps of: A, judging whether a refrigerating compartment of the refrigerator is needed to be refrigerated; B, opening the air door from a completely closed position and simultaneously detecting a first temperature T1 in the refrigerating compartment when the refrigerating compartment is needed to be refrigerated; C, detecting a second temperature T2 in the refrigerating compartment after a first time period M1, and comparing the temperature T1 with the second temperature T2; and D, resetting the air door to the completely closed position and returning to the step A when (T1-T2)<X1, wherein X1 is a first preset temperature. According to the control method for the air door of the refrigerator, the interference of the air door is eliminated, so that the air door is switched from the completely closed position to a completely opened position; and therefore, the refrigeration efficiency can be improved, and the energy is saved.
Description
Technical field
The present invention relates to field of domestic appliances manufacture technology, particularly relate to a kind of air door control method of refrigerator and realize the refrigerator of this control method.
Background technology
At present, most of automatically controlled wind cooling refrigerators all have MOD, and it is the refrigeration that directly realizes refrigerator through the switch air door that this type refrigerator has chamber between at least.Like this, the state of air door has directly influenced the performance of whole refrigerator with regard to the temperature of chamber between having determined fully.
For refrigerator, air door only needs two states, complete opening and closing fully.Present control method is: during a certain chamber request refrigeration of refrigerator, then let the air door complete opening.When stopping to freeze, let air door close fully.If when running into external disturbance in the process of opening or closing and causing the damper motor stall, air door just can not reach complete opening or complete closing state.
When a certain chamber request closed, run into interference, cause air door not closed fully.Cold air can flow into this chamber through the air door gap.Indoor temperature is descended, may cause the chamber phenomenon of freezing, if when this chamber is refrigerating chamber, then can the fresh-keeping food of freezing demand.
When a certain chamber request opened, run into interference, cause air door not have complete opening.Because the slit of air door is less, it is indoor that cold air can not be flowed between this fast, and it is slow to cause an indoor temperature to descend, and makes a big impact for the refrigerator refrigeration performance.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least.
For this reason, one object of the present invention is to propose a kind of control method of interference free performance of the air door that improves refrigerator.
Another object of the present invention is to propose a kind of refrigerator.
Control method according to the air door of the refrigerator of the embodiment of the invention may further comprise the steps: A: judge whether the chamber needs refrigeration between the refrigeration of said refrigerator; B: when between said refrigeration need freeze in the chamber, start said air door and open from complete closed position and detect first indoor between the said refrigeration temperature T 1 simultaneously; C: detect the second indoor temperature T 2 between said refrigeration behind the process very first time section M1, and said first temperature T 1 is compared with said second temperature T 2; And D: when T1-T2＜X1, make said air door reset to complete closed position and return steps A, wherein X1 is first preset temperature.
Control method according to the air door of the refrigerator of the embodiment of the invention; When between the refrigeration of refrigerator need freeze in the chamber; The temperature on former and later two aspects of very first time section is opened and detected to air door, compare these two temperature, if the temperature difference is less than first preset temperature; Again open and repeat above-mentioned steps after then air door being closed, up to the temperature difference more than or equal to first preset temperature.Thus; When need freeze in the chamber between the refrigeration of refrigerator; Can make air door get rid of to disturb,, thereby can improve refrigerating efficiency and energy efficient through the temperature difference and first preset temperature are compared so that air door is transformed into the fully open position from complete closed position.
In addition, the control method of the air door of refrigerator according to the above embodiment of the present invention can also have following additional technical characterictic:
The control method of the air door of refrigerator according to an embodiment of the invention also comprises: E: judge whether the chamber need stop refrigeration between the refrigeration of said refrigerator; F: when the chamber need stop to freeze between said refrigeration, start said air door and close from the fully open position and detect the 3rd indoor between said refrigeration temperature T 3 simultaneously; G: through detecting the 4th indoor temperature T 4 between said refrigeration behind the second time period M2, and will said the 4th temperature T 4 and said the 3rd temperature T 3 compare; And H: when T4＜T3 or T4-T3＜X2, make said air door reset to the fully open position and return step e, wherein X2 is second preset temperature.
Advantageously, the control method of the air door of refrigerator according to an embodiment of the invention, the said second preset temperature X2 is 1 degree centigrade.
Advantageously, the control method of the air door of refrigerator according to an embodiment of the invention, the said second time period M2 is 10 minutes.
Further; The control method of the air door of refrigerator according to an embodiment of the invention; Judging whether chamber between the refrigeration of said refrigerator need freeze is to carry out through temperature indoor between said refrigeration and first temperature threshold compared, and judges whether chamber between the refrigeration of said refrigerator need stop to freeze and be to carry out through the temperature between said cool room and second temperature threshold compared.
The control method of the air door of refrigerator according to an embodiment of the invention, the said first preset temperature X1 is 1 degree centigrade.
The control method of the air door of refrigerator according to an embodiment of the invention, said very first time section M1 is 10 minutes.
Refrigerator according to the embodiment of the invention comprises: casing, have chamber and air channel between refrigeration in the said casing, and said air channel is communicated with through chamber between ventilating opening and said refrigeration; Air door; Said air door is located at said ventilating opening place and removable between closed position and the fully open position fully; Chamber between said air channel of said air door conducting, said fully open position and said refrigeration wherein, and in said complete closed position said air door breaks off chamber between said air channel and said refrigeration; Temperature sensor, said temperature sensor are used to detect temperature indoor between said refrigeration; Controller, said controller link to each other with temperature sensor with said air door respectively and said controller is configured to: control said air door when need freeze in the chamber between said refrigeration and open from complete closed position and control said temperature sensor simultaneously and detect first indoor between the said refrigeration temperature T 1; Detecting second indoor between the said refrigeration temperature T 2 through the said temperature sensor of control behind the very first time section M1; Said first temperature T 1 is compared with said second temperature T 2; And when T1-T2＜X1, control said air door and reset to complete closed position, wherein X1 is first preset temperature.
Refrigerator according to an embodiment of the invention; Said controller further is configured to: when the chamber need stop to freeze between said refrigeration, control said air door close from the fully open position control simultaneously said temperature sensor detect the 3rd indoor between said refrigeration temperature T 3 and; The said temperature sensor of control detects the 4th indoor between said refrigeration temperature T 4 after through the second time period M2; Said the 4th temperature T 4 is compared with said the 3rd temperature T 3; And when T4＜T3 or T4-T3＜X2, control said air door and reset to the fully open position, wherein X2 is second preset temperature.
Advantageously; Refrigerator according to an embodiment of the invention; Said controller further is configured to the temperature indoor between said refrigeration and first temperature threshold are compared with chamber between definite said refrigeration whether need refrigeration, and is used for the temperature indoor between said refrigeration and second temperature threshold are compared to confirm whether the chamber need stop refrigeration between said refrigeration.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the sketch map of control method of the air door of refrigerator according to an embodiment of the invention;
Fig. 2 is the sketch map of control method of the air door of refrigerator according to another embodiment of the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; It will be appreciated that; The orientation of indications such as term " " center ", " vertically ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relation are for based on orientation shown in the drawings or position relation; only be to describe with simplifying for the ease of describing the present invention; rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more a plurality of these characteristics can be shown or impliedly comprised to the characteristic that is limited with " first ", " second " clearly.In description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the invention, need to prove that only if clear and definite regulation and qualification are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can concrete condition understand above-mentioned term concrete implication in the present invention.
Describe control method in detail with reference to accompanying drawing below according to the air door of the refrigerator of the embodiment of the invention.
Shown in Fig. 1-2, the control method according to the air door of the refrigerator of the embodiment of the invention may further comprise the steps:
A: judge whether the chamber needs refrigeration between the refrigeration of said refrigerator.
B: when between said refrigeration need freeze in the chamber, start said air door and open from complete closed position and detect first indoor between the said refrigeration temperature T 1 simultaneously.Promptly make and open air door this when action, indoor temperature between refrigeration.
C: detect the second indoor temperature T 2 between said refrigeration behind the process very first time section M1, and said first temperature T 1 is compared with said second temperature T 2.For example, open after this action of air door the time plays 10 minutes making, detect temperature indoor between said refrigeration, and with the temperature comparison of this temperature when beginning to freeze to obtain a temperature difference.
D: when T1-T2＜X1, make said air door reset to complete closed position and return steps A, wherein X1 is first preset temperature, and for example, the first preset temperature X1 can be 1 degree centigrade.
That is to say that the signal that needs refrigeration is sent in the chamber between the refrigeration of refrigerator, and air door is opened from the position of closing fully.Detect respectively air door when making opening action to making behind the opening action 10 minutes temperature on these two points, obtain a temperature difference.With this temperature difference and first preset temperature, for example be 1 degree centigrade, compare.If, then explaining air door less than 1 degree centigrade, the temperature difference do not have to be transformed into the fully open position from complete closed position because of receiving external interference.At this moment, air door is reset to the position of closing fully and repeats above step.More than or equal to 1 degree centigrade, explain then that air door is transformed into the fully open position from complete closed position until the detected temperature difference.
Thus; When need freeze in the chamber between the refrigeration of refrigerator; Can make air door get rid of to disturb through the temperature difference and first preset temperature are compared,, thereby can improve refrigerating efficiency and energy efficient so that air door is transformed into the fully open position from complete closed position after through adjustment as early as possible.
According to one embodiment of present invention, as shown in Figure 2, the control method of the air door of said refrigerator also comprises:
E: judge whether the chamber need stop refrigeration between the refrigeration of said refrigerator.
F: when the chamber need stop to freeze between said refrigeration, start said air door and close from the fully open position and detect the 3rd indoor between said refrigeration temperature T 3 simultaneously.Promptly make and close air door this when action, indoor temperature between refrigeration.
G: through detecting the 4th indoor temperature T 4 between said refrigeration behind the second time period M2, and will said the 4th temperature T 4 and said the 3rd temperature T 3 compare.For example, close after this action of air door the time plays 10 minutes making, detect temperature indoor between said refrigeration, and with the temperature comparison of this temperature when beginning to freeze to obtain another temperature difference.
H: when T4＜T3 or T4-T3＜X2, make said air door reset to the fully open position and return step e, wherein X2 is second preset temperature, and for example, the second preset temperature X2 can be 1 degree centigrade.
In other words, the signal that need stop to freeze is sent in the chamber between the refrigeration of refrigerator, and air door is closed from the position of opening fully.Detect respectively air door when making closing motion to making behind the closing motion 10 minutes temperature on these two points, obtain a temperature difference.With this temperature difference and second preset temperature, for example be 1 degree centigrade, compare.If the temperature difference is less than 1 degree centigrade or make behind the closing motion 10 minutes the temperature of temperature when making closing motion; Explain that then air door is not transformed into complete closed position because of receiving external interference from the fully open position, cold wind continues to blow to chamber between the refrigeration of refrigerator.At this moment, air door is reset to the fully open position and repeats above step.Until the detected temperature difference more than or equal to 1 degree centigrade or make closing motion after 10 minutes the temperature of temperature when making closing motion, explain that then air door has been transformed into complete closed position from the fully open position.
Thus; When the chamber need stop to freeze between the refrigeration of refrigerator; Can compare through the temperature that the temperature difference and second preset temperature is compared or the second time period M2 initial sum is stopped on two points; Make air door get rid of disturb, so that air door is transformed into complete closed position after through adjustment as early as possible from the fully open position, thus further energy efficient.
Further; According to some embodiments of the present invention; Judging whether chamber between the refrigeration of said refrigerator need freeze is to carry out through temperature indoor between said refrigeration and first temperature threshold compared, and judges whether chamber between the refrigeration of said refrigerator need stop to freeze and be to carry out through the temperature between said cool room and second temperature threshold compared.That is to say that when temperature indoor between the refrigeration of refrigerator was higher than first temperature threshold, refrigerator sent the signal that needs refrigeration; When temperature indoor between the refrigeration of refrigerator was lower than second temperature threshold, refrigerator sent the signal that stops to freeze.Thus, can make that the temperature in indoor keeps relative stability between the refrigeration of refrigerator, to improve the reliability of refrigerator.
Refrigerator according to the embodiment of the invention is described below.
Refrigerator according to the embodiment of the invention comprises: casing (not shown), air door (not shown), temperature sensor (not shown), controller (controller).
Particularly, have chamber and air channel between refrigeration in the said casing.Said air channel is communicated with through chamber between ventilating opening and said refrigeration.
Said air door is located at said ventilating opening place and removable between closed position and the fully open position fully.Chamber between said air channel of said air door conducting, said fully open position and said refrigeration wherein, and in said complete closed position said air door breaks off chamber between said air channel and said refrigeration.
Said temperature sensor is used to detect temperature indoor between said refrigeration.
Said controller links to each other with temperature sensor with said air door respectively.Wherein, said controller is configured to: control said air door when need freeze in the chamber between said refrigeration and open from complete closed position and control said temperature sensor simultaneously and detect first indoor between the said refrigeration temperature T 1.Detecting second indoor between the said refrigeration temperature T 2 through the said temperature sensor of control behind the very first time section M1.Said first temperature T 1 is compared with said second temperature T 2.When T1-T2＜X1, control said air door and reset to complete closed position, wherein X1 is first preset temperature.
Refrigerator according to the embodiment of the invention; Controller is when receiving the signal of indoor needs refrigeration between the refrigeration of refrigerator; Temperature when the control air door is opened and controlled temperature sensor and detects air door and make opening action and air door are made behind the opening action through very first time section M1, and the temperature after ten minutes for example compares the temperature in two moment and draws a temperature difference; Again with this temperature difference and first preset temperature, such as 1 degree centigrade compare.If, then explaining air door less than 1 degree centigrade, the temperature difference do not have to be transformed into the fully open position from complete closed position because of receiving external interference.At this moment, controller control air door resets to the position closed fully to make opening action again.More than or equal to 1 degree centigrade, explain then that air door is transformed into the fully open position from complete closed position until the detected temperature difference.Thus; When need freeze in the chamber between the refrigeration of refrigerator; Can make air door get rid of to disturb through the temperature difference and first preset temperature are compared; So that air door is transformed into the fully open position from complete closed position after through adjustment as early as possible, thereby can improve the refrigerating efficiency and the energy efficient of chamber between the refrigeration of refrigerator.
According to one embodiment of present invention, said controller further is configured to:
When the chamber need stop to freeze between said refrigeration, control said air door and close from the fully open position and control said temperature sensor simultaneously and detect the 3rd indoor between said refrigeration temperature T 3.
The said temperature sensor of control detects the 4th indoor between said refrigeration temperature T 4 after through the second time period M2.
Said the 4th temperature T 4 is compared with said the 3rd temperature T 3.
When T4＜T3 or T4-T3＜X2, control said air door and reset to the fully open position, wherein X2 is second preset temperature.
Refrigerator according to the embodiment of the invention; Controller is when receiving the signal that indoor needs stop to freeze between the refrigeration of refrigerator; Temperature when the control air door is closed and controlled temperature sensor and detects air door and make closing motion and air door are made behind the closing motion through the second time period M2, and the temperature after ten minutes for example compares the temperature in two moment and draws another temperature difference; Again with this temperature difference and second preset temperature, such as 1 degree centigrade compare.If the temperature difference is made behind the closing motion 10 minutes the temperature of temperature when making closing motion less than 1 degree centigrade or air door, explain that then air door is not transformed into complete closed position because of receiving external interference from the fully open position.At this moment, controller control air door resets to the position of opening fully to make closing motion again.The temperature of 10 minutes temperature when making closing motion explains that then air door has been transformed into complete closed position from the fully open position after the detected temperature difference is made closing motion more than or equal to 1 degree centigrade or air door.Thus; When the chamber need stop to freeze between the refrigeration of refrigerator; Can make air door get rid of to disturb through the temperature difference and second preset temperature are compared, so that air door is transformed into the fully open position from complete closed position after through adjustment as early as possible, thus further energy efficient.
Advantageously; According to a concrete example of the present invention; Said controller further is configured to the temperature indoor between said refrigeration and first temperature threshold are compared with chamber between definite said refrigeration whether need refrigeration, and is used for the temperature indoor between said refrigeration and second temperature threshold are compared to confirm whether the chamber need stop refrigeration between said refrigeration.That is to say that when temperature indoor between the refrigeration of refrigerator was higher than first temperature threshold, refrigerator sent the signal that needs refrigeration; When temperature indoor between the refrigeration of refrigerator was lower than second temperature threshold, refrigerator sent the signal that stops to freeze.Thus, can make that the temperature in indoor keeps relative stability between the refrigeration of refrigerator, to improve the reliability of refrigerator.
Control method according to the air door of the refrigerator of the embodiment of the invention; When need freeze in the chamber between the refrigeration of refrigerator; Temperature that can be when the air door that records is made closing motion compares to obtain a temperature difference with the temperature of making behind the closing motion predetermined amount of time; And the temperature difference and first preset temperature compared make air door get rid of to disturb, so that air door is transformed into the fully open position from complete closed position after through adjustment as early as possible, thereby can improve refrigerating efficiency and energy efficient.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (10)
1. the control method of the air door of a refrigerator is characterized in that, may further comprise the steps:
A: judge whether the chamber needs refrigeration between the refrigeration of said refrigerator;
B: when between said refrigeration need freeze in the chamber, start said air door and open from complete closed position and detect first indoor between the said refrigeration temperature T 1 simultaneously;
C: detect the second indoor temperature T 2 between said refrigeration behind the process very first time section M1, and said first temperature T 1 is compared with said second temperature T 2; With
D: when T1-T2＜X1, make said air door reset to complete closed position and return steps A, wherein X1 is first preset temperature.
2. the control method of the air door of refrigerator according to claim 1 is characterized in that, also comprises:
E: judge whether the chamber need stop refrigeration between the refrigeration of said refrigerator;
F: when the chamber need stop to freeze between said refrigeration, start said air door and close from the fully open position and detect the 3rd indoor between said refrigeration temperature T 3 simultaneously;
G: through detecting the 4th indoor temperature T 4 between said refrigeration behind the second time period M2, and will said the 4th temperature T 4 and said the 3rd temperature T 3 compare; With
H: when T4＜T3 or T4-T3＜X2, make said air door reset to the fully open position and return step e, wherein X2 is second preset temperature.
3. the control method of the air door of refrigerator according to claim 2 is characterized in that, the said second preset temperature X2 is 1 degree centigrade.
4. the control method of the air door of refrigerator according to claim 2 is characterized in that, the said second time period M2 is 10 minutes.
5. according to the control method of the air door of each described refrigerator among the claim 2-4; It is characterized in that; Judging whether chamber between the refrigeration of said refrigerator need freeze is to carry out through temperature indoor between said refrigeration and first temperature threshold compared, and judges whether chamber between the refrigeration of said refrigerator need stop to freeze and be to carry out through temperature indoor between said refrigeration and second temperature threshold compared.
6. the control method of the air door of refrigerator according to claim 1 is characterized in that, the said first preset temperature X1 is 1 degree centigrade.
7. the control method of the air door of refrigerator according to claim 1 is characterized in that, said very first time section M1 is 10 minutes.
8. a refrigerator is characterized in that, comprising:
Casing has chamber and air channel between refrigeration in the said casing, said air channel is communicated with through chamber between ventilating opening and said refrigeration;
Air door; Said air door is located at said ventilating opening place and removable between closed position and the fully open position fully; Chamber between said air channel of said air door conducting, said fully open position and said refrigeration wherein, and in said complete closed position said air door breaks off chamber between said air channel and said refrigeration;
Temperature sensor, said temperature sensor are used to detect temperature indoor between said refrigeration;
Controller, said controller link to each other with temperature sensor with said air door respectively and said controller is configured to: control said air door when need freeze in the chamber between said refrigeration and open from complete closed position and control said temperature sensor simultaneously and detect first indoor between the said refrigeration temperature T 1; Detecting second indoor between the said refrigeration temperature T 2 through the said temperature sensor of control behind the very first time section M1; Said first temperature T 1 is compared with said second temperature T 2; And when T1-T2＜X1, control said air door and reset to complete closed position, wherein X1 is first preset temperature.
9. refrigerator according to claim 8; It is characterized in that; Said controller further is configured to: when the chamber need stop to freeze between said refrigeration, control said air door close from the fully open position control simultaneously said temperature sensor detect the 3rd indoor between said refrigeration temperature T 3 and; The said temperature sensor of control detects the 4th indoor between said refrigeration temperature T 4 after through the second time period M2; Said the 4th temperature T 4 is compared with said the 3rd temperature T 3; And when T4＜T3 or T4-T3＜X2, control said air door and reset to the fully open position, wherein X2 is second preset temperature.
10. refrigerator according to claim 9; It is characterized in that; Said controller further is configured to the temperature indoor between said refrigeration and first temperature threshold are compared with chamber between definite said refrigeration whether need refrigeration, and is used for the temperature indoor between said refrigeration and second temperature threshold are compared to confirm whether the chamber need stop refrigeration between said refrigeration.
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| CN103604276A (en) * | 2013-12-05 | 2014-02-26 | 合肥美的电冰箱有限公司 | Refrigerator as well as temperature control device and temperature control method thereof |
| CN103900342A (en) * | 2014-04-04 | 2014-07-02 | 合肥美的电冰箱有限公司 | Air door closing in-place detecting device and refrigerating plant |
| CN104062135A (en) * | 2014-06-19 | 2014-09-24 | 合肥美的电冰箱有限公司 | Refrigerator fault detecting method and system |
| CN105318643A (en) * | 2015-03-10 | 2016-02-10 | Tcl智能科技（合肥）有限公司 | Refrigerator failure detection method and device |
| CN107726705A (en) * | 2017-09-08 | 2018-02-23 | 合肥华凌股份有限公司 | Air door back to zero resets control method, control device and equipment |
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| CN111649533A (en) * | 2020-05-21 | 2020-09-11 | 四川虹美智能科技有限公司 | Air door control method, device and system |
| CN112146345A (en) * | 2019-06-28 | 2020-12-29 | 青岛海尔电冰箱有限公司 | Refrigerator door flash seam detection method, control device and refrigerator |
| CN112665297A (en) * | 2020-12-07 | 2021-04-16 | 珠海格力电器股份有限公司 | Control method and device for refrigerator air door, controller and refrigerator |
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