CN112146348A - Control method and control device for detecting flash seam of refrigerator door and refrigerator - Google Patents
Control method and control device for detecting flash seam of refrigerator door and refrigerator Download PDFInfo
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- CN112146348A CN112146348A CN201910577206.3A CN201910577206A CN112146348A CN 112146348 A CN112146348 A CN 112146348A CN 201910577206 A CN201910577206 A CN 201910577206A CN 112146348 A CN112146348 A CN 112146348A
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- refrigerator
- defrosting
- difference
- refrigerator door
- evaporator
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/004—Control mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- 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
- F25D2700/10—Sensors measuring the temperature of the evaporator
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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a control method and a control device for detecting a flash seam of a refrigerator door and the refrigerator, wherein the method comprises the steps of detecting that the refrigerator is powered on and the refrigerator door is in a closed state; detecting whether the refrigerator meets a defrosting condition, wherein the defrosting condition is that an evaporator of the refrigerator is judged to be frost-blocked or the refrigerator is judged to reach a default defrosting time; if yes, controlling the refrigerator to start a defrosting function; and obtaining the defrosting interval time of the refrigerator at the last two times, and if the defrosting interval time is less than the preset minimum defrosting interval time, judging that a flash seam exists in the refrigerator door. According to the scheme, whether the refrigerator needs defrosting and is started to defrost is detected, then the defrosting interval time I is detected, whether flash seams exist in the refrigerator door is judged through the defrosting interval time I, the detection method is simple, but the detection effect is good, and therefore adverse consequences caused by the flash seams can be reduced.
Description
Technical Field
The invention relates to the field of household appliance control, in particular to a control method and a control device for detecting a flash seam of a refrigerator door and a refrigerator.
Background
With the social development, the living standard of people is increasingly improved, and the pace of life of people is faster and faster, people often buy a large number of articles to place in the refrigerator, and the refrigerator gradually becomes one of the essential household appliances in the life of people. Scientific technology is continuously developing, and refrigerators are also continuously developing and updating. The refrigerator is gradually developed into a direct cooling refrigerator and a latest air cooling refrigerator from the old refrigerator.
The air-cooled refrigerator is also called a frost-free refrigerator, but the air-cooled refrigerator does not generate the frosting phenomenon, but the frost is basically condensed on the evaporator and is not condensed on the inner wall of the refrigerator. The evaporator of the air-cooled refrigerator is arranged in the refrigerator and is separated from the inner wall of the refrigerator. Therefore, the inner wall of the refrigerator does not frost, so the refrigerator is called frostless.
However, in the production of the refrigerator, there are many uncertainties, for example, due to the mass production, it is difficult to ensure the process consistency of all products and the consistency of zero parts, which may cause a small probability of flash seams after the refrigerator door is closed. Also, there may be a possibility that the refrigerator door may be inadvertently or weakly stressed during use by the user, and may have a flash-seam.
This kind of flash seam problem can make the evaporimeter surface of refrigerator rapid frost in a large amount, and after the evaporimeter frosted, the air current in the refrigerator and because of the air that the flash seam came in will not carry out abundant heat with the evaporimeter, cause the air temperature in the wind channel to rise to thereby cause the refrigerator refrigeration efficiency to reduce and influence the fresh-keeping effect of eating the material. And because the temperature drop speed of the refrigerator is reduced, the operation rate of the refrigerator is greatly increased, and the power consumption is increased. In addition, the flash seam problem is often difficult to find.
Disclosure of Invention
The invention aims to provide a control method for detecting a flash seam of a refrigerator door.
Another object of the present invention is to provide a control device for detecting a flash seam of a refrigerator door.
Still another object of the present invention is to provide a refrigerator.
In order to achieve one of the above objects, an embodiment of the present invention provides a control method for detecting a flash seam of a refrigerator door, including:
detecting that the refrigerator is powered on and the refrigerator door is in a closed state;
detecting whether the refrigerator meets a defrosting condition, wherein the defrosting condition is that an evaporator of the refrigerator is judged to be frost-blocked or the refrigerator is judged to reach a default defrosting time; if yes, controlling the refrigerator to start a defrosting function;
and obtaining the defrosting interval time of the refrigerator two times after the refrigerator is powered on and the refrigerator door is in a closed state, and if the defrosting interval time is less than the preset minimum defrosting interval time, judging that a flash seam exists in the refrigerator door.
As a further improvement of an embodiment of the present invention, the step of "judging that the evaporator of the refrigerator is frosted and blocked" specifically includes:
acquiring temperatures T1 and T2 of an air return opening and an air outlet of the evaporator, calculating a difference D1 between the temperatures T1 and T2, and acquiring a temperature T3 of the evaporator;
when the difference D1 is smaller than a first preset temperature difference, if the difference D1 is gradually smaller in a first preset time period and the temperature T3 is larger than a preset evaporator temperature, it is determined that the refrigerator evaporator is frost-blocked.
As a further refinement of an embodiment of the present invention, the method further comprises the steps of:
when the flash seam of the refrigerator door is detected, the refrigerator is controlled to alarm once every an alarm period until the refrigerator door is opened and closed again.
As a further refinement of an embodiment of the present invention, the method further comprises the steps of:
when the flash seam of the refrigerator door is detected, judging whether the difference D2 between the actual temperature and the set temperature of the refrigerator is greater than a second preset temperature difference or not; and
if yes, a compressor and a fan of the refrigerator are turned off, and the difference D2 is detected in a circulating mode until the difference D2 is smaller than or equal to a second preset temperature difference;
and when the difference D2 is smaller than or equal to a second preset temperature difference, setting the refrigerator to enter a low consumption state.
As a further improvement of an embodiment of the present invention, the step of "entering a low consumption state of the refrigerator" specifically includes:
the compressor and fan of the refrigerator are operated at the lowest rotational speed.
In order to achieve one of the above objects, an embodiment of the present invention provides a control device for detecting a flash seam of a refrigerator door, the control device comprising:
the detection module is used for detecting whether the refrigerator is powered on and the refrigerator door is closed, and detecting whether the refrigerator reaches the default defrosting time;
the defrosting module is used for starting a defrosting function of the refrigerator and acquiring defrosting interval time of two times of defrosting of the refrigerator;
and the judging module is used for judging whether the refrigerator meets defrosting conditions or not and judging that flash seams exist in the refrigerator door when the defrosting interval time is less than the preset minimum defrosting interval time.
As a further improvement of an embodiment of the present invention, the control device further includes a calculation module,
the calculation module is used for acquiring the temperatures T1 and T2 of an air return opening and an air outlet of the evaporator, calculating the difference D1 between the temperatures T1 and T2 and acquiring the temperature T3 of the evaporator;
the judging module is further used for judging that the evaporator of the refrigerator is frost-blocked if the difference D1 is gradually reduced in a first preset time period and the temperature T3 is greater than the preset temperature of the evaporator when the difference D1 is smaller than a first preset temperature difference.
As a further improvement of an embodiment of the present invention, the control device further includes an alarm module, and when the judgment module judges that a flash seam exists in the refrigerator door, the alarm module alarms once every other alarm period until the refrigerator door is opened and closed again.
As a further improvement of an embodiment of the present invention, the control device further includes a control module,
the control module is used for closing a compressor and a fan of the refrigerator when the judging module judges that the refrigerator door has a flash seam and the difference D2 between the actual temperature and the set temperature of the refrigerator is greater than a second preset temperature difference; and the control module is also used for controlling the compressor and the fan of the refrigerator to operate at the lowest rotating speed when the judging module judges that the refrigerator door has the flash seams and the difference D2 is less than or equal to a second preset temperature difference.
In order to achieve one of the above objects, an embodiment of the present invention provides a refrigerator, which includes the control device for detecting a flash seam of a refrigerator door according to any one of the above technical solutions.
The invention has the advantages that:
1. the control method for detecting the flash seam of the refrigerator door detects whether the refrigerator needs defrosting and starts defrosting, then detects the defrosting interval time I, and judges whether the flash seam exists in the refrigerator door according to the defrosting interval time I.
2. The invention also discloses a control method for detecting whether the evaporator is frost-blocked, which can judge whether the evaporator is frost-blocked or not according to the refrigeration effect of the evaporator and the surface temperature of the evaporator.
3. The invention also comprises a control method for detecting the flash seam of the refrigerator door, which provides fresh-keeping for the user when no person processes the alarm sent by the refrigerator, and reduces the frosting amount of the evaporator of the refrigerator as much as possible, so that the refrigerator can achieve a better balance between fresh-keeping and frosting amount reduction in the flash seam state.
Drawings
Fig. 1 is a schematic flow chart of a control method for detecting a flash seam of a refrigerator door according to a first embodiment of the present invention.
Fig. 2 is a schematic flow chart of detecting whether frost blockage occurs in an evaporator according to a second embodiment of the present invention.
Fig. 3 is a schematic flow chart of a control method after detecting a flash seam of a refrigerator door according to a third embodiment of the present invention.
Fig. 4 is a functional block diagram of a control device for detecting a flash gap of a refrigerator door according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. In addition, the features of the embodiments and implementations of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
According to one embodiment of the invention, the refrigerator can be an air-cooled frost-free refrigerator and comprises a refrigerator body, a door body, an air duct, a fan, an evaporator, a compressor, a controller and the like.
The cabinet includes a storage chamber (which may be a refrigerating chamber or a freezing chamber), and the door body is pivotably mounted on the cabinet to open or close the storage chamber. The air duct is arranged in the box body and is provided with an air duct opening communicated with the storeroom, and the fan is arranged in the air duct and is used for sending cold air generated by the evaporator into the storeroom. The evaporator vaporizes the liquid refrigerant to absorb heat, thereby reducing the temperature of the air in the evaporator and generating cold air. The temperature sensor arranged on the surface of the evaporator is a fog melting sensor. The compressor compresses a gaseous refrigerant, raising the pressure and temperature of the refrigerant, causing the refrigerant to circulate through the system.
Under normal conditions (the subsequent normal conditions refer to the condition that a refrigerator door has no flash seams), the refrigerator carries out defrosting at the beginning of each fixed defrosting period.
The occurrence of the flash seam on the refrigerator door means that after the refrigerator door is closed (the refrigerator detects that the state of the refrigerator door is a closed state), a gap exists between the refrigerator door and the refrigerator body, so that cold air leaks.
Implementation mode one
Fig. 1 is a schematic flow chart illustrating a control method for detecting a flash seam of a refrigerator door according to a first embodiment of the present invention. As shown in fig. 1, includes:
104, judging whether the defrosting is the first defrosting after the refrigerator is powered on and the refrigerator door is in a closed state or not, if so, entering a step 102, and if not, entering a step 105;
105, acquiring defrosting interval time I;
and step 106, judging whether the refrigerator door has a flash seam or not through the defrosting interval time I.
In the above embodiment, step 102 needs to determine whether the refrigerator meets a defrosting condition, and the defrosting condition of the refrigerator of the present invention may be that a frost blockage of an evaporator of the refrigerator is detected (see the content of the second embodiment specifically), or that the refrigerator has reached a normal defrosting time.
In addition, since the air outside the refrigerator door enters the inside of the refrigerator after the refrigerator door is opened, the minimum defrosting interval time may be preset at the time interval from the closing of the refrigerator door to the first defrosting of the refrigerator, and therefore, the time interval cannot be used to accurately determine whether the refrigerator door has a flash seam, and therefore, it is necessary to determine whether the current defrosting is the first defrosting after the refrigerator is powered on and the refrigerator door is in a closed state in step 104. Preferably, when judging whether the current defrosting is the first defrosting, a defrosting counter can be added, the defrosting counter is cleared after the refrigerator door is opened and closed each time, 1 is added to the defrosting counter after the defrosting function is started each time, then whether the defrosting counter is greater than 1 is judged, if so, the first defrosting is not the first defrosting, and if not, the first defrosting is represented.
The defrosting interval time I is acquired, via step 105. The defrosting interval time I can be obtained in two ways: recording the starting time of defrosting when the defrosting function is started every time, respectively acquiring the starting time of defrosting of the last two times, and calculating the difference value, namely the defrosting interval time I; and secondly, adding a timer, starting timing when the defrosting function is started, stopping timing when the defrosting function is started next time, wherein the time of the timer is defrosting interval time I. Of course, other prior art techniques for obtaining the defrosting interval time I may also be used.
Further, step 106 judges whether a flash seam exists in the refrigerator door through the defrosting interval time I, and specifically includes: and when the defrosting interval time I is less than the preset minimum defrosting interval time, judging that the refrigerator door has a flash seam.
In any of the above steps, if it is detected that the refrigerator door is opened or closed again, the current step is interrupted, and the process proceeds to step 101.
Because the refrigerator door has the flash crack after, the frost of the evaporimeter of refrigerator appears very easily stifled to lead to changing the frost interval time I to shorten by a wide margin, this embodiment is through detecting whether the refrigerator needs the defrosting and start the defrosting, then detects the defrosting interval time I, judges whether there is the flash crack in the refrigerator door through changing the frost interval time I, and detection method is simple, but detection effect is good.
Second embodiment
Fig. 2 is a flowchart illustrating a control method for detecting whether or not frost is blocked in an evaporator according to a second embodiment of the present invention. It should be noted that the occurrence of frost blockage in the evaporator means that a large amount of frost is formed on the surface of the evaporator, thereby seriously affecting the refrigeration effect of the refrigerator. As shown in fig. 2, the control method includes:
and step 206, judging that the evaporator is not frost-blocked, and ending the detection.
In the above embodiment, it is determined that the frost clogging of the evaporator has occurred only when the difference D1 is smaller than the first preset temperature difference, and the difference D1 is gradually decreased for the first predetermined period of time while T3 is greater than the second preset temperature, and otherwise, it is determined that the frost clogging of the evaporator has not occurred. When the difference D1 is smaller than the first preset temperature difference and the difference D1 gradually decreases within the first predetermined time period, it indicates that the refrigeration effect of the evaporator is poor and worse, but it cannot be determined whether the difference is caused by frost blockage or whether T3 is greater than the second preset temperature, i.e., whether the surface temperature T3 of the evaporator is increased (if frost blockage occurs on the surface of the evaporator, the heat transfer capability of the evaporator is seriously affected, and thus the surface temperature of the evaporator is increased).
Further, the step of "determining whether the difference D1 gradually decreases within the first predetermined time period" specifically includes: dividing the first preset time interval into at least two small segments, respectively selecting a value of each small segment D1, comparing the values of the small segments D1, and if the value of D1 is decreased according to the time increasing sequence, determining that the difference D1 is gradually decreased in the first preset time interval.
In any of the above steps, if it is detected that the refrigerator door is opened or closed again, the current step is interrupted, and the detection of whether the refrigerator door has a flash seam is restarted.
The control method for detecting whether the evaporator is frosted or not according to the embodiment can judge whether the evaporator is frosted or not according to the refrigeration effect of the evaporator and the surface temperature of the evaporator.
Third embodiment
When the flash seam of the refrigerator door is detected, the refrigerator gives an alarm to prompt people around the refrigerator to open and close the refrigerator door again. However, when no one handles the alarm sent by the refrigerator, the refrigerator still operates in a normal control method after the flash seam exists in the refrigerator door, and the frosting amount of the evaporator of the refrigerator is further increased, so that the refrigerating effect is further poorer, and the power consumption is further increased. Therefore, in order to reduce the frost formation amount of the evaporator as much as possible in the flash-gap state and to provide freshness preservation for the user, the third embodiment of the present invention provides a control method after detecting the flash gap of the refrigerator door. As shown in fig. 3, the control method includes:
and 307, judging whether the refrigerator door is opened or closed again, if not, entering the step 302, and if so, ending the control method.
In the above embodiment, the alarm is set once per alarm period, via step 301. Through steps 302, 303 and 304, when the difference D2 between the actual temperature and the set temperature of the refrigerator is greater than the second predetermined temperature difference, the refrigerator still needs to continue cooling, so the refrigerator is set to enter a low-consumption state, a better balance between reducing the frost formation amount and keeping fresh is achieved, and if the refrigerator already enters the low-consumption state, the refrigerator goes down. Through steps 302, 305 and 306, when the difference D2 between the actual temperature and the set temperature of the refrigerator is smaller than the second preset temperature difference, the actual temperature of the refrigerator is already low, and refrigeration is not needed temporarily, and in order to reduce the frost formation amount, the compressor and the fan are directly set to stop working until the difference D2 between the actual temperature and the set temperature of the refrigerator is larger than the second preset temperature difference, and the low consumption state is entered. Of course, if the compressor has stopped working, the downward movement is continued. In addition, the "low consumption state of the refrigerator" in steps 303 and 304 includes: the compressor runs with minimum rotational speed, and the fan runs with minimum rotational speed, and every fixed frost cycle defrosting once, the fixed frost cycle is the defrosting cycle when refrigerator normal operating condition (do not have the flash seam), does not shorten the defrosting cycle of refrigerator under the low consumption state, the reason lies in: after defrosting is finished every time, the surface temperature of the evaporator needs to rise by about 30 ℃, the temperature of the storage chamber needs to rise by about 7 ℃, and if the defrosting period is shortened, the defrosting frequency is increased, the temperature rising frequency of the evaporator and the storage chamber of the refrigerator is increased, so that the refrigerator can well provide fresh keeping.
In any of the above steps, if it is detected that the refrigerator door is opened or closed again, the control method ends, the normal control method of the refrigerator is entered, and the detection of whether the refrigerator door has a flash seam is restarted.
In a specific embodiment, the second preset temperature difference is 5 ℃, the alarm period is 30min, the fixed defrosting period is 4h, namely, after the occurrence of flash seams on the refrigerator door is detected, the alarm is set once every 30min, and the alarm time is 30 s; judging whether the difference D2 between the actual temperature and the set temperature of the refrigerator is less than 5 ℃, if so, stopping the compressor and the fan until the difference D2 between the actual temperature and the set temperature is detected to be more than 5 ℃; and setting the compressor and the fan to operate at the lowest rotating speed, and defrosting once every 4 h.
As shown in fig. 4, in an embodiment of the present invention, the control device for detecting a flash gap of a refrigerator door may be applied to the first to third embodiments.
For clarity and conciseness of description, only one drawing is adopted in the application, and the control device comprises a detection module 11, a defrosting module 13, a judgment module 15, a calculation module 17, a control module 19 and an alarm module 21. Of course, modules that are not used in the corresponding embodiments may be removed from the present control apparatus, for example, in the case of the first embodiment, the present control apparatus may include only the detection module 11, the defrosting module 13, and the judgment module 15. And so on.
Wherein, when the control device for detecting the flash seam of the refrigerator door corresponds to the first embodiment, the device comprises:
the detection module 11 is used for detecting whether the refrigerator is powered on and the refrigerator door is closed, and detecting whether the refrigerator reaches a default defrosting time;
the defrosting module 13 is used for starting a defrosting function of the refrigerator and acquiring defrosting interval time I of two times of recent defrosting of the refrigerator;
and the judging module 15 is used for judging whether the refrigerator meets the defrosting condition or not, and judging that a flash seam exists in the refrigerator door when the defrosting interval time I is less than the preset minimum defrosting interval time.
Generally, the defrosting start time is calculated by default every time, and defrosting is performed once every fixed defrosting period, for example, the fixed defrosting period is 4 hours, the time is counted from the last defrosting start time, and the next default defrosting start time is 4 hours later.
In the present embodiment, a determination condition (if frost is blocked on the surface of the evaporator) is added so as to possibly change the defrosting interval time I between two adjacent times, and then the defrosting interval time I is compared with a predetermined minimum defrosting interval time to determine whether a flash gap exists in the refrigerator door.
A second embodiment of the present invention is a control method for detecting whether or not frost blocking occurs in an evaporator of a refrigerator, and when the control device for detecting a flash seam of a refrigerator door corresponds to the second embodiment, the device includes:
the calculating module 17 is used for acquiring the temperatures T1 and T2 of the air return opening and the air outlet of the evaporator, calculating the difference D1 between the temperatures T1 and T2, and acquiring the temperature T3 of the evaporator;
the judging module 15 is further configured to, when the difference D1 is smaller than a first preset temperature difference, if the difference D1 gradually decreases within a first preset time period and the temperature T3 is greater than a preset evaporator temperature, determine that the evaporator of the refrigerator is frost-blocked.
In the above embodiment, when the difference D1 is smaller than the first preset temperature difference and the difference D1 gradually decreases within the first predetermined time period, it indicates that the refrigeration effect of the evaporator is poor and worse, but it cannot be determined whether T3 is greater than the second preset temperature, that is, whether the surface temperature T3 of the evaporator is increased (if frost is present on the surface of the evaporator, the heat transfer capability of the evaporator is seriously affected, and the surface temperature of the evaporator is increased), so that when the above conditions are satisfied, it can be determined that a large amount of frost is present on the surface of the evaporator of the refrigerator and frost blockage has occurred.
The third embodiment of the present invention is a method for controlling a refrigerator door after detecting that a flash gap exists in the refrigerator door, and when the control device for detecting a flash gap of a refrigerator door corresponds to the third embodiment, the device includes a judging module 15 for judging whether a flash gap exists in the refrigerator door, and a control module 19 for, after the judging module judges that a flash gap exists in the refrigerator door:
when the difference D2 between the actual temperature and the set temperature of the refrigerator is larger than a second preset temperature difference, closing a compressor and a fan of the refrigerator;
and when the difference D2 is less than or equal to a second preset temperature difference, controlling the compressor and the fan of the refrigerator to operate at the lowest rotating speed.
Further, the device also comprises an alarm module 21, when the judgment module judges that the refrigerator door has a flash seam, the alarm module gives an alarm once every other alarm period until the refrigerator door is opened and closed again;
it should be noted that the preset minimum defrosting interval time, the fixed defrosting period, the first preset temperature difference, the second preset temperature difference, the first preset time period and the alarm period are constants, and these preset values are constants and can be embedded into each module of the control device 10 through a program. The preset value can be determined through an experimental method, and when the model of the refrigerator is fixed, the corresponding preset value is fixed.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A control method for detecting a flash seam in a refrigerator door, the method comprising:
detecting that the refrigerator is powered on and the refrigerator door is in a closed state;
detecting whether the refrigerator meets a defrosting condition, wherein the defrosting condition is that an evaporator of the refrigerator is judged to be frost-blocked or the refrigerator is judged to reach a default defrosting time; if yes, controlling the refrigerator to start a defrosting function;
and obtaining the defrosting interval time of the refrigerator two times after the refrigerator is powered on and the refrigerator door is in a closed state, and if the defrosting interval time is less than the preset minimum defrosting interval time, judging that a flash seam exists in the refrigerator door.
2. The control method for detecting the flash seam of the refrigerator door as claimed in claim 1, wherein the step of determining that the evaporator of the refrigerator is frost-blocked specifically comprises:
acquiring temperatures T1 and T2 of an air return opening and an air outlet of the evaporator, calculating a difference D1 between the temperatures T1 and T2, and acquiring a temperature T3 of the evaporator;
when the difference D1 is smaller than a first preset temperature difference, if the difference D1 is gradually smaller in a first preset time period and the temperature T3 is larger than a preset evaporator temperature, it is determined that the refrigerator evaporator is frost-blocked.
3. The control method for detecting a flash seam of a refrigerator door according to claim 1, further comprising the steps of:
when the flash seam of the refrigerator door is detected, the refrigerator is controlled to alarm once every an alarm period until the refrigerator door is opened and closed again.
4. The control method for detecting a flash seam of a refrigerator door according to claim 1, further comprising the steps of:
when the flash seam of the refrigerator door is detected, judging whether the difference D2 between the actual temperature and the set temperature of the refrigerator is greater than a second preset temperature difference or not; and
if yes, a compressor and a fan of the refrigerator are turned off, and the difference D2 is detected in a circulating mode until the difference D2 is smaller than or equal to a second preset temperature difference;
and when the difference D2 is smaller than or equal to a second preset temperature difference, setting the refrigerator to enter a low consumption state.
5. The control method for detecting the flash seam of the refrigerator door as claimed in claim 4, wherein the step of entering the low-consumption state of the refrigerator specifically comprises the following steps:
the compressor and fan of the refrigerator are operated at the lowest rotational speed.
6. A control device for detecting a flash seam in a refrigerator door, the control device comprising:
the detection module is used for detecting whether the refrigerator is powered on and the refrigerator door is closed, and detecting whether the refrigerator reaches the default defrosting time;
the defrosting module is used for starting a defrosting function of the refrigerator and acquiring defrosting interval time of two times of defrosting of the refrigerator;
and the judging module is used for judging whether the refrigerator meets defrosting conditions or not and judging that flash seams exist in the refrigerator door when the defrosting interval time is less than the preset minimum defrosting interval time.
7. The control device according to claim 6, characterized in that: the control device further comprises a calculation module for calculating the calculation,
the calculation module is used for acquiring the temperatures T1 and T2 of an air return opening and an air outlet of the evaporator, calculating the difference D1 between the temperatures T1 and T2 and acquiring the temperature T3 of the evaporator;
the judging module is further used for judging that the evaporator of the refrigerator is frost-blocked if the difference D1 is gradually reduced in a first preset time period and the temperature T3 is greater than the preset temperature of the evaporator when the difference D1 is smaller than a first preset temperature difference.
8. The control device according to claim 6, characterized in that: the control device also comprises an alarm module, and when the judgment module judges that the refrigerator door has a flash seam, the alarm module gives an alarm once every other alarm period until the refrigerator door is opened and closed again.
9. The control device according to claim 6, characterized in that: the control device also comprises a control module which is used for controlling the control device,
the control module is used for closing a compressor and a fan of the refrigerator when the judging module judges that the refrigerator door has a flash seam and the difference D2 between the actual temperature and the set temperature of the refrigerator is greater than a second preset temperature difference; and
the control module is also used for controlling the compressor and the fan of the refrigerator to operate at the lowest rotating speed when the judging module judges that the refrigerator door has the flash seams and the difference D2 is smaller than or equal to a second preset temperature difference.
10. A refrigerator comprising the control device for detecting a flash seam of a refrigerator door according to any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577206.3A CN112146348B (en) | 2019-06-28 | 2019-06-28 | Control method and control device for detecting flash seam of refrigerator door and refrigerator |
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| CA1219319A (en) * | 1984-01-26 | 1987-03-17 | Andrew T. Tershak | Refrigerator door ajar alarm with variable delay |
| JPH06331263A (en) * | 1993-05-20 | 1994-11-29 | Mitsubishi Electric Corp | Door opening detecting device for refrigerator |
| JP2005024159A (en) * | 2003-07-01 | 2005-01-27 | Toshiba Corp | Refrigerator |
| JP2008070066A (en) * | 2006-09-15 | 2008-03-27 | Mitsubishi Electric Corp | Refrigerator, and method of determining incompletely closed door of refrigerator |
| JP2008232529A (en) * | 2007-03-20 | 2008-10-02 | Matsushita Electric Ind Co Ltd | Refrigerator |
| JP2009115420A (en) * | 2007-11-09 | 2009-05-28 | Panasonic Corp | Refrigerator |
| CN202485326U (en) * | 2012-03-21 | 2012-10-10 | 刘石劬 | Intelligentized refrigerator energy-saving controller |
| WO2018116419A1 (en) * | 2016-12-21 | 2018-06-28 | 三菱電機株式会社 | Refrigerator |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1219319A (en) * | 1984-01-26 | 1987-03-17 | Andrew T. Tershak | Refrigerator door ajar alarm with variable delay |
| JPH06331263A (en) * | 1993-05-20 | 1994-11-29 | Mitsubishi Electric Corp | Door opening detecting device for refrigerator |
| JP2005024159A (en) * | 2003-07-01 | 2005-01-27 | Toshiba Corp | Refrigerator |
| JP2008070066A (en) * | 2006-09-15 | 2008-03-27 | Mitsubishi Electric Corp | Refrigerator, and method of determining incompletely closed door of refrigerator |
| JP2008232529A (en) * | 2007-03-20 | 2008-10-02 | Matsushita Electric Ind Co Ltd | Refrigerator |
| JP2009115420A (en) * | 2007-11-09 | 2009-05-28 | Panasonic Corp | Refrigerator |
| CN202485326U (en) * | 2012-03-21 | 2012-10-10 | 刘石劬 | Intelligentized refrigerator energy-saving controller |
| WO2018116419A1 (en) * | 2016-12-21 | 2018-06-28 | 三菱電機株式会社 | Refrigerator |
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