CN112747543A - Refrigerator defrosting device, control method and refrigerator - Google Patents
Refrigerator defrosting device, control method and refrigerator Download PDFInfo
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- CN112747543A CN112747543A CN202110018611.9A CN202110018611A CN112747543A CN 112747543 A CN112747543 A CN 112747543A CN 202110018611 A CN202110018611 A CN 202110018611A CN 112747543 A CN112747543 A CN 112747543A
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- defrosting
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- 238000010257 thawing Methods 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000009423 ventilation Methods 0.000 claims abstract description 100
- 238000001704 evaporation Methods 0.000 claims abstract description 77
- 230000008020 evaporation Effects 0.000 claims abstract description 75
- 238000007789 sealing Methods 0.000 claims abstract description 55
- 238000005485 electric heating Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 18
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 239000012080 ambient air Substances 0.000 abstract description 4
- 239000003570 air Substances 0.000 description 45
- 239000007789 gas Substances 0.000 description 18
- 238000005057 refrigeration Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- 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
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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
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The present disclosure provides a refrigerator defrosting device, a control method and a refrigerator, the refrigerator defrosting device comprising: the refrigerator comprises a refrigerator shell, an evaporator and a ventilation sealing structure, wherein the evaporator is arranged in an evaporation cavity inside the refrigerator shell, a ventilation opening is formed in the refrigerator shell, the inside of the refrigerator shell and the outside of the refrigerator shell can be communicated through the ventilation opening, the ventilation opening and the evaporator are arranged oppositely, the ventilation sealing structure is arranged at the position of the ventilation opening, and the ventilation opening can be opened or closed through the ventilation sealing structure. According to the defrosting method, when the evaporator is defrosted according to the requirement, indoor ambient air can be directly utilized to perform auxiliary heating defrosting on the evaporator, the consumed power is small and the power consumption is small compared with common electric heating defrosting, the whole energy consumption of the refrigerator cannot be obviously increased, and the problems that the power consumption is large in the defrosting process and the whole energy consumption of the refrigerator is increased due to the fact that the defrosting increment is increased are solved.
Description
Technical Field
The disclosure relates to the technical field of refrigerators, in particular to a refrigerator defrosting device, a control method and a refrigerator.
Background
At present, the mainstream defrosting mode in the market is electric heating defrosting, because the electric heating wire is a high-power device, the power consumption is large in the defrosting process, the integral energy consumption of the refrigerator is increased due to the fact that the defrosting increment is enlarged, and the internal temperature of the refrigerator is increased after defrosting is caused by the fact that waste heat generated after the electric heating device heats and the evaporation cavity cannot be discharged, so that the heat preservation of the refrigerator is not facilitated, and the energy consumption of the refrigerator is further increased.
Because the defrosting mode of the refrigerator in the prior art is electric heating defrosting, the power consumption is high in the defrosting process, the integral energy consumption of the refrigerator is increased due to the fact that the defrosting increment is increased, and the waste heat generated after the electric heating device is heated cannot be discharged from the evaporation cavity to cause the internal temperature of the refrigerator to rise after defrosting and the like, the refrigerator defrosting device, the control method and the refrigerator are researched and designed.
BRIEF SUMMARY OF THE PRESENT DISCLOSURE
Therefore, the technical problem to be solved by the present disclosure is to overcome the defects that the defrosting mode of the refrigerator in the prior art is electric heating defrosting, the power consumption is large in the defrosting process, and the defrosting increment is increased to increase the overall energy consumption of the refrigerator, so as to provide a refrigerator defrosting device, a control method and a refrigerator.
In order to solve the above problems, the present disclosure provides a refrigerator defrosting device, which includes:
refrigerator casing, evaporimeter and ventilation seal structure, the evaporimeter set up in the evaporation chamber of the inside of refrigerator casing, just be provided with the vent on the refrigerator casing, the vent can with the inside of refrigerator casing with the outside of refrigerator casing communicates, the vent with the evaporimeter sets up relatively, and the position of vent sets up ventilation seal structure, ventilation seal structure can open the vent or close the vent.
In some embodiments, the ventilation sealing structure comprises a base and a ventilation hole, the ventilation hole is disposed on the base, the base comprises a first side surface and a second side surface which are opposite to each other, the ventilation hole penetrates from the first side surface to the second side surface, and the ventilation hole on the refrigerator shell are oppositely disposed.
In some embodiments, the vent sealing structure further comprises a moving member movable to close the vent hole with a first end thereof opposite the vent hole, the first end being formed as a seal structure.
In some embodiments, the second end of the moving part is provided with a blower member that can draw wind outside the refrigerator case into the inside of the refrigerator case or blow wind inside the refrigerator case out to the outside of the refrigerator case when the blower member is moved to be opposite to the ventilation hole.
In some embodiments, the moving part includes a rotating shaft portion rotatably coupled to the base, the seal structure is attachable to one end of the rotating shaft portion, the fan member is attachable to the other end of the rotating shaft portion, and the moving part is rotatable about the rotating shaft portion.
In some embodiments, a rotating motor is connected to the rotating shaft portion and can drive the rotating shaft portion to rotate; the rotating shaft part and the sealing element structure are connected and provided with a first connecting part, and the rotating shaft part and the fan component are connected and provided with a second connecting part.
In some embodiments, the seal arrangement is circumferentially 180 ° opposite the fan member; and/or, be provided with annular slide structure on the base, the sealing member structure with the fan component all sets up and is located in the slide structure, and the homoenergetic is in move in the slide structure.
In some embodiments, the vent is provided in the chute structure and is capable of closing the vent when the seal structure is moved to oppose the vent, the fan member being moved to oppose the vent to enhance the airflow rate in the vent.
In some embodiments, the refrigerator defrosting apparatus further comprises a timer; and/or, the refrigerator shell is also provided with a drain hole which can be communicated with the evaporation cavity and can drain water in the evaporation cavity; and/or, the refrigerator defrosting device also comprises an electric heating device capable of heating the evaporator.
The present disclosure also provides a control method of the refrigerator defrosting apparatus as set forth in any one of the above, wherein:
when the ventilation sealing structure comprises the ventilation hole and the moving part, and the second end of the moving part is provided with the fan component, the control method comprises the following steps:
a detection step for detecting the temperature and/or the operation time of an evaporator inside the refrigerator;
a judging step for judging whether an evaporator inside the refrigerator enters a defrosting state;
and a control step of controlling the moving part of the ventilation sealing structure to move to a position where the fan member is opposite to the ventilation hole when the evaporator enters a defrosting state, and controlling to open the fan member to rotate in the forward direction so as to suck wind outside the refrigerator shell into the refrigerator shell.
In some embodiments, the evaporation chamber comprises an air outlet and an air return:
and the control step is also used for controlling the air outlet and the air return inlet of the evaporation cavity where the evaporator is located to be closed before the fan component is started.
In some embodiments, when the refrigerator defrosting apparatus further includes a timer, and the refrigerator case is further provided with a drain hole thereon:
and the control step is also used for controlling the timer to be started and time when the fan component is started, and controlling the drain hole of the refrigerator to be used as the exhaust hole of the refrigerator shell.
In some embodiments, the determining step is further configured to determine a relationship between the evaporator temperature and a preset temperature;
and the control step is also used for controlling the fan component to rotate reversely when the temperature of the evaporator is higher than the preset temperature, and controlling the gas in the evaporation cavity to be discharged out of the evaporation cavity.
In some embodiments, when further comprising an electrical heating device:
the control step is also used for judging whether the timing time of the timer reaches a first preset time or not when the temperature of the evaporator is less than or equal to a preset temperature;
the control step is also used for continuously controlling the fan component to be opposite to the vent hole when the timing time of the timer does not reach a first preset time, and continuously controlling the fan component to rotate in the positive direction;
and when the timing time of the timer reaches a first preset time, controlling the electric heating device to be opened, heating the gas in the evaporation cavity, continuously controlling the fan component to be opposite to the vent hole, and continuously controlling the fan component to be started to rotate in the positive direction.
In some embodiments, the determining step is further configured to determine a relationship between the evaporator temperature and a preset temperature;
the control step is also used for controlling the electric heating device to be closed when the temperature of the evaporator is higher than the preset temperature, and controlling the timer to be reset and count again; further controlling the fan component to rotate reversely, and controlling the gas in the evaporation cavity to be discharged out of the evaporation cavity; and when the temperature of the evaporator is less than or equal to the preset temperature, continuously controlling the electric heating device to be opened to heat the gas in the evaporation cavity.
In some embodiments, the detecting step is further configured to re-detect when the timer is re-timed when the fan member is rotating in a reverse direction;
the judging step is also used for judging the size relation between the timing time and second preset time;
the control step is also used for controlling the fan component to stop when the timing time is more than a second preset time, controlling the evaporator to enter dripping time, controlling the timer to reset, and controlling the rotating motor to rotate until the sealing element structure is opposite to the ventilation hole so as to seal the ventilation hole; and when the timing time is less than or equal to a second preset time, continuously controlling the fan component to rotate reversely.
The present disclosure also provides a refrigerator including the refrigerator defrosting device of any one of the above.
The refrigerator defrosting device, the control method and the refrigerator provided by the disclosure have the following beneficial effects:
1. the ventilation opening which can be communicated with the inside and the outside of the shell is formed in the refrigerator shell, outdoor air can be guided into the evaporation cavity in the refrigerator shell, especially when the evaporator needs defrosting, indoor ambient air can be directly utilized to perform auxiliary heating defrosting on the evaporator, the condition is particularly suitable for the condition that the ambient temperature is high in summer and the like, the ventilation opening can be effectively controlled to be closed or opened through the arrangement of the ventilation sealing structure, the ventilation opening can be opened when the evaporator needs defrosting, hot air in the outdoor environment is guided into the evaporator to perform defrosting, and when the evaporator does not need defrosting, the ventilation opening can be effectively closed through the ventilation sealing structure, the sealing performance of the evaporation cavity can be ensured, and cold loss is prevented; compared with common electric heating defrosting, the refrigerator has the advantages that the power consumption is low, the integral energy consumption of the refrigerator cannot be obviously increased, and the problems that the power consumption is high and the integral energy consumption of the refrigerator is increased due to the fact that the defrosting increment is increased in the defrosting process are effectively solved;
2. the utility model adopts the fan sealing element rotating structure (moving part) driven by the motor, holes with the same size as the sealing element and the fan are arranged at the corresponding bubble layer position of the refrigerator (the bubble layer is arranged in the shell, the two side plates at the height of the evaporator of the freezing chamber are provided with the ventilation holes which are opposite to the evaporator), when the refrigerator carries out defrosting operation, the fan end is rotated to the designated position, high-temperature gas in the environment is introduced into the evaporation cavity by starting a fan at the fan end, hot air introduced by the fan is directly blown to the evaporator by design so as to heat the evaporator, after defrosting is finished, the fan rotates reversely, so that hot air in the evaporation cavity is pumped out of the evaporation cavity and sent to the environment, therefore, the temperature in the evaporation cavity of the refrigerator after defrosting is reduced, and the technical problem that the temperature in the refrigerator after defrosting is increased because the residual heat generated after the electric heating device is heated cannot be discharged out of the evaporation cavity can be effectively solved. After the refrigerator recovers refrigeration, the sealing piece end is moved to the position of the small hole of the foam layer through the rotation of the motor to seal the small hole, so that the cold leakage condition in the refrigeration process is prevented.
Drawings
Fig. 1 is an internal structure view of a refrigerator including a refrigerator defrosting apparatus of the present disclosure;
fig. 2 is a multi-dimensional structure view of a ventilation sealing structure in a defrosting apparatus of a refrigerator of the present disclosure
Fig. 3 is a control flowchart of a control method of a refrigerator defrosting apparatus of the present disclosure.
The reference numerals are represented as:
1. a refrigerator housing; 10. an evaporation chamber; 11. a vent; 2. an evaporator; 3. a ventilation sealing structure; 31. a base; 311. a first side surface; 312. a second side surface; 313. a slideway structure; 32. a vent hole; 33. a moving part; 331. a seal arrangement; 332. a fan member; 333. a rotating shaft part; 334. a first connection portion; 335. a second connecting portion.
Detailed Description
As shown in fig. 1 to 3, the present disclosure provides a refrigerator defrosting apparatus, which includes:
The ventilation opening which can be communicated with the inside and the outside of the shell is formed in the refrigerator shell, outdoor air can be guided into the evaporation cavity in the refrigerator shell, especially when the evaporator needs defrosting, indoor ambient air can be directly utilized to perform auxiliary heating defrosting on the evaporator, the condition is particularly suitable for the condition that the ambient temperature is high in summer and the like, the ventilation opening can be effectively controlled to be closed or opened through the arrangement of the ventilation sealing structure, the ventilation opening can be opened when the evaporator needs defrosting, hot air in the outdoor environment is guided into the evaporator to perform defrosting, and when the evaporator does not need defrosting, the ventilation opening can be effectively closed through the ventilation sealing structure, the sealing performance of the evaporation cavity can be ensured, and cold loss is prevented; compared with common electric heating defrosting, the refrigerator defrosting method has the advantages that the consumed power is low, the power consumption is low, the overall energy consumption of the refrigerator cannot be obviously increased, and the problems that the power consumption is high in the defrosting process and the overall energy consumption of the refrigerator is increased due to the fact that the defrosting increment is increased are effectively solved.
In some embodiments, the ventilation sealing structure 3 comprises a base 31 and a ventilation hole 32, the ventilation hole 32 is disposed on the base 31, the base 31 comprises a first side 311 and a second side 312 which are opposite to each other, the ventilation hole 32 penetrates from the first side 311 to the second side 312, and the ventilation hole 32 is disposed opposite to the ventilation hole 11 on the refrigerator housing 1. The ventilation sealing structure is fixed on the inner wall of the shell through the base, and the ventilation holes are arranged to be opposite to the ventilation holes in the shell, so that indoor air is introduced into the evaporation cavity of the refrigerator from the ventilation holes, heat transfer and defrosting of the evaporator are achieved by utilizing the indoor air, electric power consumption is reduced, energy is effectively utilized, and system energy efficiency is improved.
In some embodiments, the ventilation sealing structure 3 further includes a moving member 33, the moving member 33 being movable to close the ventilation hole 32 with a first end thereof formed as a sealing structure 331 opposed to the ventilation hole 32. This is the further preferred structural style of ventilation seal structure of this disclosure, can make its motion and with its first end (sealing member structure) and ventilation hole relative through the moving part, can block up the ventilation hole effectively, plays fine sealed effect and effect, is applicable to the condition of normal refrigeration in the evaporation chamber this moment, and the evaporation chamber need not turn into the frost, consequently can prevent effectively that the air conditioning in the evaporation chamber from leaking.
In some embodiments, the second end of the moving part 33 is provided with a blower member 332, and when the blower member 332 is moved to be opposite to the ventilation hole 32, the blower member 332 can suck wind outside the refrigerator case 1 into the inside of the refrigerator case 1 or can blow wind inside the refrigerator case 1 out to the outside of the refrigerator case 1. The moving part of the present disclosure can also move the fan component to the opposite side with the ventilation hole through the rotation of the fan and get into the inside of the refrigerator with higher speed the outside air current of refrigerator through the setting of fan component to improve heat exchange efficiency, and can discharge the inside air of refrigerator to the outside with higher speed after the frost is gone up to the evaporimeter, prevent that the gas temperature in the evaporation chamber is too high and influence normal refrigeration, lead to the increase of power consumption.
The utility model adopts the fan sealing element rotating structure (moving part) driven by the motor, holes with the same size as the sealing element and the fan are arranged at the corresponding bubble layer position of the refrigerator (the bubble layer is arranged in the shell, the two side plates at the height of the evaporator of the freezing chamber are provided with the ventilation holes which are opposite to the evaporator), when the refrigerator carries out defrosting operation, the fan end is rotated to the designated position, high-temperature gas in the environment is introduced into the evaporation cavity by starting a fan at the fan end, hot air introduced by the fan is directly blown to the evaporator by design so as to heat the evaporator, after defrosting is finished, the fan rotates reversely, so that hot air in the evaporation cavity is pumped out of the evaporation cavity and sent to the environment, therefore, the temperature in the evaporation cavity of the refrigerator after defrosting is reduced, and the technical problem that the temperature in the refrigerator after defrosting is increased because the residual heat generated after the electric heating device is heated cannot be discharged out of the evaporation cavity can be effectively solved. After the refrigerator recovers refrigeration, the sealing piece end is moved to the position of the small hole of the foam layer through the rotation of the motor to seal the small hole, so that the cold leakage condition in the refrigeration process is prevented.
In some embodiments, the moving member 33 includes a rotating shaft part 333 rotatably coupled to the base 31, the sealing member 331 may be coupled to one end of the rotating shaft part 333, the blower member 332 may be coupled to the other end of the rotating shaft part 333, and the moving member 33 may be rotatable about the rotating shaft part 333. This is the further preferred structural style of the moving part of this disclosure, through pivot portion, can make the moving part rotate around pivot portion for when needs defrosting rotate the fan to be relative with the ventilation hole, in order to accelerate the heat transfer, after defrosting and will evaporate the intracavity high temperature gas after the discharge with the sealing member structure rotate to be relative with the ventilation hole, in order to seal.
In some embodiments, a rotating motor is connected to the rotating shaft part 333, and can drive the rotating shaft part 333 to rotate; a first connecting portion 334 is connected between the rotating shaft portion 333 and the sealing member 331, and a second connecting portion 335 is connected between the rotating shaft portion 333 and the blower member 332. The present disclosure also enables the rotation of the rotating shaft portion to be effectively driven by the rotating electric machine, the first connecting portion can be used to connect the rotating shaft portion and the sealing member structure, and the second connecting portion can be used to connect the rotating shaft portion and the fan member.
In some embodiments, the seal structure 331 is circumferentially 180 ° opposite the fan member 332; and/or an annular slide way structure 313 is arranged on the base 31, and the sealing element structure 331 and the fan component 332 are both arranged in the slide way structure 313 and can move in the slide way structure 313. This is the preferred arrangement between the seal structure and the fan member of the present disclosure, i.e., a linear structure is formed, enabling the seal structure to be opposite the vent, the fan member not to be opposite the vent, and the seal structure not to be opposite the vent, when the fan member is opposite the vent; the present disclosure also enables the seal structure and the fan member to make a movement in the slide structure, making a rotational movement around the rotation shaft portion, by the slide structure.
In some embodiments, the vent 32 is disposed in the chute structure 313 and is capable of closing the vent 32 when the seal structure 331 is moved opposite the vent 32, and the fan member 332 is moved opposite the vent 32 to enhance the airflow rate in the vent 32. This is the preferred positional relationship of the vent and chute structure of the present disclosure, the fan member opposing the vent enhances flow velocity, and the seal structure opposing the vent closes the vent.
In some embodiments, the refrigerator defrosting apparatus further comprises a timer; and/or, the refrigerator shell 1 is also provided with a drain hole which can be communicated with the evaporation cavity 10 and can drain water in the evaporation cavity 10; and/or, the refrigerator defrosting device further comprises an electric heating device capable of heating the evaporator 2. The timer is used for recording time effectively, the drain hole can drain condensed water in the evaporation cavity effectively, and the drain hole can also be used for exhausting, so that gas is exhausted through the drain hole when the ventilation hole ventilates the evaporator; the electric heating device can be started when the ventilation defrosting effect is not obvious or poor, so that the defrosting effect is improved.
The present disclosure also provides a control method of the refrigerator defrosting apparatus as set forth in any one of the above, wherein:
when the ventilation sealing structure 3 includes the ventilation hole 32 and the moving part 33, and the second end of the moving part 33 is provided with the blower member 332, the control method includes:
a detection step for detecting the temperature and/or the operation time of an evaporator inside the refrigerator;
a judging step for judging whether an evaporator inside the refrigerator enters a defrosting state;
and a control step of controlling the moving part 33 of the ventilation sealing structure 3 to move until the fan member 332 is opposite to the ventilation hole 32 when the evaporator enters a defrosting state, and controlling to start the fan member 332 to rotate in a forward direction so as to suck wind outside the refrigerator housing 1 into the inside of the refrigerator housing 1.
The air conditioner can guide outdoor air into the evaporation cavity in the refrigerator shell, especially can directly utilize indoor ambient air to perform auxiliary heating defrosting on the evaporator when the evaporator needs defrosting, is especially suitable for the condition of high ambient temperature in summer and the like, can effectively control the ventilation opening to be closed or opened through the arrangement of the ventilation sealing structure, can open the ventilation opening when the evaporator needs defrosting, can guide hot air of outdoor environment into the evaporator for defrosting, can effectively close the ventilation opening through the ventilation sealing structure when the evaporator does not need defrosting, can ensure the sealing performance of the evaporation cavity, and can prevent cold loss; compared with common electric heating defrosting, the refrigerator defrosting method has the advantages that the consumed power is low, the power consumption is low, the overall energy consumption of the refrigerator cannot be obviously increased, and the problems that the power consumption is high in the defrosting process and the overall energy consumption of the refrigerator is increased due to the fact that the defrosting increment is increased are effectively solved.
The utility model provides a supplementary defrosting device of ring temperature, the normal refrigeration in-process sealing member structure of refrigerator rotates to refrigerator aperture top, plugs up the aperture, prevents that the refrigerator from leaking cold. When the accumulated defrosting time of the refrigerator reaches, the rotating motor rotates, the fan component rotates to the position above the small hole, high-temperature air is sucked into the evaporation cavity through the fan at the moment, the refrigerator is assisted to defrost, a large amount of high-temperature air is stored in the evaporation cavity after defrosting is finished, the fan rotates in the reverse direction at the moment, the high-temperature air in the evaporation cavity is discharged into the environment, and the rotating motor rotates the sealing structure to the position above the small hole after exhausting is finished to start the next refrigerating cycle.
In some embodiments, the evaporation chamber comprises an air outlet and an air return:
the control step is further configured to control both the air outlet and the air return opening of the evaporation cavity where the evaporator is located to be closed before the fan member 332 is turned on. This openly can improve heat and the temperature rise to evaporating intracavity portion effectively through above-mentioned step, prevents to go out in air outlet and the return air inlet from evaporating the chamber, can improve the defrosting efficiency effectively.
In some embodiments, when the refrigerator defrosting apparatus further includes a timer, and the refrigerator case is further provided with a drain hole thereon:
and the control step is also used for controlling the timer to be started and time when the fan component is started, and controlling the drain hole of the refrigerator to be used as the exhaust hole of the refrigerator shell.
The timer is started when the fan is started to blow air towards the inside of the evaporation cavity, and the drain hole is used as the exhaust hole of the refrigerator shell, so that the air in the evaporation cavity can be effectively exhausted through the exhaust hole, low-temperature gas in the evaporation cavity is removed, and the defrosting efficiency of the evaporator can be further improved; the time when the fan rotates forwards can be recorded through timing action, and conditions are provided for whether the heating device is started or not later.
In some embodiments, the determining step is further configured to determine a relationship between the evaporator temperature and a preset temperature;
and the control step is also used for controlling the fan component to rotate reversely when the temperature of the evaporator is higher than the preset temperature (preferably 4 ℃), and controlling the gas in the evaporation cavity to be discharged out of the evaporation cavity.
The evaporator is effectively defrosted by introducing indoor air when the temperature of the evaporator is higher than the preset temperature, the fan component is controlled to rotate reversely at the moment, the gas in the evaporation cavity is further discharged, and high-temperature gas is discharged, so that the condition of large power consumption during secondary refrigeration and cooling is effectively prevented, and the energy efficiency is effectively improved.
In some embodiments, when further comprising an electrical heating device:
the control step is also used for judging whether the timing time of the timer reaches a first preset time or not when the temperature of the evaporator is less than or equal to a preset temperature;
the control step is further used for continuously controlling the fan member 332 to be opposite to the vent 32 when the timing time of the timer does not reach a first preset time (preferably 10min), and continuously controlling the fan member 332 to rotate in the forward direction;
and when the timing time of the timer reaches a first preset time, controlling the electric heating device to be opened, heating the gas in the evaporation cavity, continuously controlling the fan component 332 to be opposite to the vent 32, and continuously controlling the fan component 332 to be started to rotate in the forward direction.
The method is a preferred control form when the evaporator temperature is less than or equal to the preset temperature, the evaporator is not effectively defrosted or completely defrosted, the judgment is further carried out by timing time of forward rotation of the fan, if the timing time does not reach the first preset time, the forward rotation of the fan is continuously started, and indoor airflow enters the evaporation cavity to further increase the temperature of the evaporator so as to enhance the defrosting; if the timing time reaches the first preset time, it indicates that the evaporator cannot be defrosted effectively by means of indoor air introduction, and at this time, the electric heating device should be started to heat the evaporator, so as to effectively improve defrosting efficiency.
In some embodiments, the determining step is further configured to determine a relationship between the evaporator temperature and a preset temperature;
the control step is also used for controlling to close the electric heating device and controlling the timer to zero and count again when the temperature of the evaporator is higher than a preset temperature (preferably 4 ℃); further controlling the fan component to rotate reversely, and controlling the gas in the evaporation cavity to be discharged out of the evaporation cavity; and when the temperature of the evaporator is less than or equal to the preset temperature, continuously controlling the electric heating device to be opened to heat the gas in the evaporation cavity.
The electric heating device is judged and controlled according to whether the temperature of the evaporator reaches the preset temperature, when the temperature of the evaporator is higher than the preset temperature, the evaporator has a good defrosting effect, the electric heating device is turned off, and the timer is reset; if the temperature of the evaporator is less than or equal to the preset temperature, the evaporator is required to be continuously heated through the electric heating device, so that defrosting of the evaporator is enhanced, and the defrosting effect of the evaporator is met.
In some embodiments, the detecting step is further configured to re-detect when the timer is re-timed when the fan member is rotating in a reverse direction;
the judging step is also used for judging the size relationship between the timing time and a second preset time (preferably 2 min);
the control step is further used for controlling the fan component to stop when the timing time is greater than a second preset time, controlling the evaporator to enter dripping time, controlling the timer to zero, and controlling the rotating motor to rotate until the sealing element structure 331 is opposite to the vent hole 32 so as to seal the vent hole 32; and when the timing time is less than or equal to a second preset time, continuously controlling the fan component to rotate reversely.
The reverse rotation is timed, the relation between the reverse rotation and the second preset time is judged, when the timed time is more than the second preset time, the hot air in the evaporation cavity is basically exhausted, the fan is controlled to stop to close the air exhausted from the evaporation cavity to the outside of the refrigerator, the evaporator is controlled to enter the dripping time, the evaporator drips condensed water, and the sealing element structure is controlled to be opposite to the vent hole, so that the air in the evaporation cavity is effectively sealed in a sealing mode, and the cold air in the interior is prevented from leaking outside; and when the timing time is less than or equal to the second preset time, the high-temperature gas in the evaporation cavity is not completely discharged (or does not meet the requirement), and the fan component is controlled to continuously rotate in the reverse direction at the moment so as to discharge the gas in the evaporation cavity to the outside.
The present disclosure also provides a refrigerator including the refrigerator defrosting device of any one of the above.
When the structure of the present disclosure is installed, a ventilation opening is formed on the side plate or the back plate of the refrigerator, and the ventilation opening corresponds to the ventilation hole 32 in the structural member. When the accumulated defrosting time of the refrigerator reaches, the refrigerator enters defrosting, at the moment, the air inlet of the evaporator and the compartment air return inlet are closed, and hot air can be prevented from entering the refrigerating and freezing compartment in the subsequent process after the two air inlets are closed. The rotary motor is activated to rotate the fan member 332 to position the vent 32 opposite, thereby creating a path for communication between the evaporation chamber and the environment. The fan of the fan member 332 is activated to rotate clockwise to introduce high temperature air in the environment into the evaporation chamber to blow toward the evaporator. The existence of this process can replace the defrosting process of returning air, and traditional back air defrosting can make the air of walk-in room get into the freezer, is unfavorable for the maintenance of freezer temperature, and the temperature of freezer in the defrosting process can be avoided effectively to this process rising. The electric heating device is started after the process is carried out for 10min, and as the fan component 332 is in the working state at the moment, the heat generated by the defrosting heater can be effectively blown to the evaporator by the fan in the fan component 332, and as the heat exchange effect of forced convection is better than that of natural convection, the heat generated by electric heating can be better absorbed by the evaporator fins, and the defrosting process can be completed more quickly. Judging whether the evaporator reaches a defrosting exit condition, and turning off the electric heating device after the evaporator reaches the defrosting exit condition. Therefore, the fan in the fan member 332 is rotated reversely to discharge the high-temperature air in the evaporation cavity to the environment, and the process is operated for about 2 min. When the water drops, the sealing element structure 331 rotates to the position opposite to the vent 32 by starting the rotating motor, and the problem of cold leakage in the refrigerating process of the refrigerator can be effectively prevented due to the good heat preservation performance of the sealing element.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present disclosure, and these modifications and variations should also be regarded as the protection scope of the present disclosure.
Claims (17)
1. A refrigerator defrosting device is characterized in that: the method comprises the following steps:
refrigerator casing (1), evaporimeter (2) and ventilation seal structure (3), evaporimeter (2) set up in evaporation chamber (10) of the inside of refrigerator casing (1), and be provided with vent (11) on refrigerator casing (1), vent (11) can with the inside of refrigerator casing (1) with the outside of refrigerator casing (1) communicates, vent (11) with evaporimeter (2) set up relatively, and the position of vent (11) sets up ventilation seal structure (3), ventilation seal structure (3) can be opened vent (11) or close vent (11).
2. The defrosting apparatus for a refrigerator of claim 1, wherein:
ventilation seal structure (3) include base (31) and ventilation hole (32), ventilation hole (32) set up in on base (31), base (31) are including first side (311) and second side (312) that back on the back, just ventilation hole (32) are followed first side (311) run through to second side (312), just ventilation hole (32) with on refrigerator casing (1) ventilation hole (11) set up relatively.
3. The defrosting apparatus for a refrigerator of claim 2, wherein:
the ventilation sealing structure (3) further comprises a moving member (33), the moving member (33) being movable to a first end thereof opposite to the ventilation hole (32) to close the ventilation hole (32), the first end being formed as a sealing structure (331).
4. The defrosting device for a refrigerator according to claim 3, wherein:
the second end of the moving part (33) is provided with a blower member (332), and when the blower member (332) moves to be opposite to the ventilation hole (32), the blower member (332) can suck wind outside the refrigerator case (1) into the inside of the refrigerator case (1) or can blow out wind inside the refrigerator case (1) to the outside of the refrigerator case (1).
5. The defrosting apparatus for a refrigerator of claim 4, wherein:
the moving part (33) includes a rotating shaft portion (333) rotatably coupled to the base (31), the seal structure (331) is connectable to one end of the rotating shaft portion (333), the fan member (332) is connectable to the other end of the rotating shaft portion (333), and the moving part (33) is rotatable about the rotating shaft portion (333).
6. The defrosting device for a refrigerator of claim 5, wherein:
the rotating shaft part (333) is connected with a rotating motor which can drive the rotating shaft part (333) to rotate; a first connecting portion (334) is connected between the rotating shaft portion (333) and the sealing element structure (331), and a second connecting portion (335) is connected between the rotating shaft portion (333) and the fan component (332).
7. The defrosting device for a refrigerator according to any one of claims 4 to 6, wherein:
the sealing element structure (331) and the fan component (332) are oppositely arranged along the circumferential direction at an angle of 180 degrees; and/or an annular slideway structure (313) is arranged on the base (31), and the sealing element structure (331) and the fan component (332) are both arranged in the slideway structure (313) and can move in the slideway structure (313).
8. The defrosting apparatus for a refrigerator of claim 7, wherein:
ventilation hole (32) set up in slide structure (313), and can be in sealing member structure (331) move to with ventilation hole (32) are relative when seal ventilation hole (32) are closed, fan component (332) move to with ventilation hole (32) are relative when strengthen the air current velocity of flow in ventilation hole (32).
9. The defrosting device for a refrigerator according to any one of claims 1 to 8, wherein:
the refrigerator defrosting device also comprises a timer; and/or a drain hole is also arranged on the refrigerator shell (1), and the drain hole can be communicated with the evaporation cavity (10) and can drain water in the evaporation cavity (10); and/or, the refrigerator defrosting device also comprises an electric heating device which can heat the evaporator (2).
10. A control method of a defrosting apparatus for a refrigerator of any one of claims 1 to 9, characterized in that:
when the ventilation sealing structure (3) comprises the ventilation hole (32) and the moving part (33), and the second end of the moving part (33) is provided with the fan member (332), the control method comprises:
a detection step for detecting the temperature and/or the operation time of an evaporator inside the refrigerator;
a judging step for judging whether an evaporator inside the refrigerator enters a defrosting state;
and a control step of controlling the moving part (33) of the ventilation sealing structure (3) to move to a fan component (332) opposite to the ventilation hole (32) when the evaporator enters a defrosting state, and controlling the fan component (332) to be started to rotate in the forward direction so as to suck wind outside the refrigerator shell (1) into the refrigerator shell (1).
11. The control method according to claim 10, characterized in that:
the evaporation cavity comprises an air outlet and an air return inlet:
and the control step is also used for controlling the air outlet and the air return inlet of the evaporation cavity where the evaporator is located to be closed before the fan component (332) is started.
12. The control method according to claim 10, characterized in that:
when the refrigerator defrosting device further comprises a timer and the refrigerator shell is further provided with a drain hole:
and the control step is also used for controlling the timer to be started and time when the fan component is started, and controlling the drain hole of the refrigerator to be used as the exhaust hole of the refrigerator shell.
13. The control method according to claim 12, characterized in that:
the judging step is also used for judging the relation between the evaporator temperature and a preset temperature;
and the control step is also used for controlling the fan component to rotate reversely when the temperature of the evaporator is higher than the preset temperature, and controlling the gas in the evaporation cavity to be discharged out of the evaporation cavity.
14. The control method according to claim 13, characterized in that:
when an electric heating device is also included:
the control step is also used for judging whether the timing time of the timer reaches a first preset time or not when the temperature of the evaporator is less than or equal to a preset temperature;
the control step is also used for continuously controlling the fan component (332) to be opposite to the vent hole (32) when the timing time of the timer does not reach a first preset time, and continuously controlling the fan component (332) to rotate in the forward direction;
when the timing time of the timer reaches a first preset time, the electric heating device is controlled to be opened, the gas in the evaporation cavity is heated, the fan component (332) is continuously controlled to be opposite to the vent hole (32), and the fan component (332) is continuously controlled to be started to rotate in the forward direction.
15. The control method according to claim 14, characterized in that:
the judging step is also used for judging the relation between the evaporator temperature and a preset temperature;
the control step is also used for controlling the electric heating device to be closed when the temperature of the evaporator is higher than the preset temperature, and controlling the timer to be reset and count again; further controlling the fan component to rotate reversely, and controlling the gas in the evaporation cavity to be discharged out of the evaporation cavity; and when the temperature of the evaporator is less than or equal to the preset temperature, continuously controlling the electric heating device to be opened to heat the gas in the evaporation cavity.
16. The control method according to claim 15, characterized in that:
the detecting step is also used for re-detecting the time re-counted by the timer when the fan component rotates reversely;
the judging step is also used for judging the size relation between the timing time and second preset time;
the control step is also used for controlling the fan component to stop when the timing time is larger than a second preset time, controlling the evaporator to enter dripping time, controlling the timer to zero, and controlling the rotating motor to rotate until the sealing element structure (331) is opposite to the ventilation hole (32) so as to seal the ventilation hole (32); and when the timing time is less than or equal to a second preset time, continuously controlling the fan component to rotate reversely.
17. A refrigerator, characterized in that:
comprising the refrigerator defrosting apparatus of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018611.9A CN112747543B (en) | 2021-01-07 | Refrigerator defrosting device, control method and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018611.9A CN112747543B (en) | 2021-01-07 | Refrigerator defrosting device, control method and refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112747543A true CN112747543A (en) | 2021-05-04 |
| CN112747543B CN112747543B (en) | 2024-06-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115164484A (en) * | 2022-07-25 | 2022-10-11 | 珠海格力电器股份有限公司 | Defrosting structure, refrigerator and defrosting control method |
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