CN113701427A - Control method of dual-system refrigerator - Google Patents
Control method of dual-system refrigerator Download PDFInfo
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- CN113701427A CN113701427A CN202010442903.0A CN202010442903A CN113701427A CN 113701427 A CN113701427 A CN 113701427A CN 202010442903 A CN202010442903 A CN 202010442903A CN 113701427 A CN113701427 A CN 113701427A
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- evaporator
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- freezing
- fan
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 239000003570 air Substances 0.000 claims abstract description 125
- 238000007710 freezing Methods 0.000 claims abstract description 108
- 230000008014 freezing Effects 0.000 claims abstract description 108
- 238000005057 refrigeration Methods 0.000 claims abstract description 108
- 238000010257 thawing Methods 0.000 claims abstract description 95
- 238000001816 cooling Methods 0.000 claims abstract description 84
- 239000012080 ambient air Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 14
- 239000003507 refrigerant Substances 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 24
- 238000007599 discharging Methods 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 3
- 230000003020 moisturizing effect Effects 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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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
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
- F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
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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
- F25D21/008—Defroster control by timer
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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
- F25D21/04—Preventing the formation of frost or condensate
-
- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
-
- 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
-
- 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
- F25D2600/02—Timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention relates to a control method of a double-system refrigerator, which comprises a refrigerator body, wherein a refrigerating chamber, a refrigerating cooling chamber, a freezing chamber and a freezing cooling chamber are limited in the refrigerator body, a refrigerating evaporator and a freezing evaporator are respectively arranged in the refrigerating cooling chamber and the freezing cooling chamber, the refrigerator also comprises a refrigerating drain pipe and a refrigerating air guide pipe, the refrigerating drain pipe is used for draining defrosting water generated by the refrigerating evaporator out of the refrigerating cooling chamber, the refrigerating air guide pipe is mutually independent from the refrigerating drain pipe, the refrigerating air guide pipe is communicated with the refrigerating cooling chamber and an external environment space where the refrigerator body is located, and a first fan is arranged inside the freezing air guide pipe. The control method of the invention comprises the following steps: judging whether a refrigeration evaporator is in a refrigeration state in which a refrigerant flows through or not in the running process of the refrigerator; and if the refrigeration evaporator is in a non-refrigeration state except a refrigeration state, controlling the first fan to rotate reversely so as to promote the ambient air outside the box body to flow to the refrigeration cooling chamber through the refrigeration air guide pipe, and defrosting the refrigeration evaporator by utilizing the ambient air.
Description
Technical Field
The invention relates to a refrigeration and freezing technology, in particular to a control method of a double-system refrigerator.
Background
For a double-system refrigerator, a refrigerating evaporator and a freezing evaporator which are respectively used for providing cold energy for a refrigerating chamber and a freezing chamber are mutually independent, defrosting of the refrigerating evaporator and the freezing evaporator is also mutually independent, defrosting is carried out by utilizing a defrosting heater, defrosting efficiency is limited to a certain extent, and energy consumption generated by the defrosting heater is higher.
Disclosure of Invention
An object of the present invention is to overcome at least one of the drawbacks of the prior art and to provide a control method of a dual system refrigerator having high defrosting efficiency and low power consumption.
A further object of the present invention is to reduce the impact of defrosting of the refrigeration evaporator on the refrigeration compartment, further reducing energy consumption.
It is another further object of the present invention to improve the efficiency and uniformity of evaporator defrosting.
In order to achieve the purpose, the invention provides a control method of a double-system refrigerator, the refrigerator comprises a box body, a refrigerating chamber, a refrigerating cooling chamber, a freezing chamber and a freezing cooling chamber are limited in the box body, a refrigerating evaporator and a freezing evaporator are respectively arranged in the refrigerating cooling chamber and the freezing cooling chamber, the refrigerator also comprises a refrigerating drain pipe and a refrigerating air guide pipe, the refrigerating drain pipe is used for draining defrosting water generated by the refrigerating evaporator out of the refrigerating cooling chamber, the refrigerating air guide pipe is mutually independent from the refrigerating drain pipe, the refrigerating air guide pipe is communicated with the refrigerating cooling chamber and an external environment space where the box body is located, and a first fan is arranged inside the freezing air guide pipe; and the control method comprises the following steps:
judging whether the refrigeration evaporator is in a refrigeration state in which a refrigerant flows through or not in the running process of the refrigerator; and
and if the refrigeration evaporator is in a non-refrigeration state except the refrigeration state, controlling the first fan to rotate reversely so as to promote the ambient air outside the box body to flow to the refrigeration cooling chamber through the refrigeration air guide pipe, so that the ambient air is utilized to defrost the refrigeration evaporator.
Optionally, after controlling the first fan to rotate reversely, the control method further includes:
judging whether a first trigger signal for indicating the first fan to rotate positively is received or not;
if so, controlling the first fan to rotate positively to promote the air in the refrigerating and cooling chamber to flow out of the box body through the refrigerating air guide pipe, so as to discharge the heat generated when the refrigerating evaporator is defrosted.
Optionally, the first trigger signal is generated when any one of the following conditions is satisfied:
the reverse rotation time of the first fan reaches a first preset time, and the refrigeration evaporator is still in the non-refrigeration state;
and finishing defrosting of the refrigeration evaporator.
Optionally, the control method further includes:
and when the forward rotation time of the first fan reaches a second preset time, controlling the first fan to stop rotating.
Optionally, a first controllable shielding mechanism for selectively blocking and/or conducting the refrigeration air guide pipe is further arranged at the refrigeration air guide pipe; and is
When the refrigeration evaporator is in the non-refrigeration state and before the first fan is controlled to rotate reversely, the control method further comprises the following steps: opening the first controllable shielding mechanism to conduct the refrigeration air guide pipe;
after controlling the first fan to stop rotating, the control method further comprises the following steps: and closing the first controllable shielding mechanism to block the refrigeration air guide pipe.
Optionally, a refrigeration heater located below the refrigeration evaporator is further disposed in the refrigeration cooling chamber, and the control method further includes:
after receiving a first defrosting starting signal used for indicating the refrigerating evaporator to start defrosting, controlling the refrigerating heater to start so as to heat and defrost the refrigerating evaporator.
Optionally, the non-cooling state of the refrigeration evaporator includes a state in which the refrigeration heater heats and defrosts the refrigeration evaporator, and a state in which the compressor of the refrigerator stops operating after the temperature in the refrigeration chamber reaches a set temperature.
Optionally, the first defrosting initiation signal is generated when the following conditions are satisfied:
detecting the humidity of an environmental space where the refrigerator is located;
searching a refrigeration defrosting period matched with the humidity;
the first defrosting start signal is generated when the duration of the heating defrosting operation not performed by the refrigerator reaches the defrosting period.
Optionally, the refrigerator further comprises a freezing water discharge pipe for discharging defrosting water generated by the freezing evaporator and a freezing air guide pipe independent from the freezing water discharge pipe, the freezing air guide pipe is communicated with the freezing cooling chamber and an external environment space where the box body is located, a second fan is arranged inside the freezing air guide pipe, and a freezing heater located below the freezing evaporator is arranged in the freezing cooling chamber; and the control method comprises the following steps:
receiving a second defrost initiation signal indicating initiation of defrost of the freeze evaporator;
and starting the freezing heater to heat and defrost the freezing evaporator, and controlling the second fan to reversely rotate to promote the ambient air outside the box body to flow to the freezing and cooling chamber through the freezing air guide pipe, so that the ambient air is used for assisting in defrosting the freezing evaporator.
Optionally, after controlling the second fan to rotate reversely, the control method further includes:
judging whether a second trigger signal for indicating the second fan to rotate forwards is received or not, wherein the second trigger signal is generated when the refrigeration evaporator is heated and defrosted;
if so, controlling the second fan to rotate forwards to promote the air in the freezing and cooling chamber to flow out of the box body through the freezing air guide pipe, so as to discharge the heat generated when the freezing evaporator defrosts.
The double-system refrigerator comprises a refrigeration air guide pipe, wherein a first fan is arranged in the refrigeration air guide pipe. In the operation process of the refrigerator, when the refrigeration evaporator is in a non-refrigeration state without flowing of a refrigerant, the first fan is controlled to rotate reversely, so that the ambient air outside the refrigerator body can be promoted to flow to the refrigeration cooling chamber through the refrigeration air guide pipe, the ambient air with relatively high temperature outside the refrigerator body is utilized to defrost the refrigeration evaporator, and the energy consumption of the refrigerator is reduced. If the refrigerator has heater defrosting, the defrosting efficiency of the refrigerator can be improved. Because the refrigerating evaporator is not flowed through by the refrigerant when the refrigerating evaporator is defrosted by utilizing the ambient air, the moisture in the ambient air can not be condensed into frost on the refrigerating evaporator, and the phenomenon of serious frost condensation of the refrigerating evaporator is avoided.
Further, according to the refrigerator, when the first fan rotates reversely to reach the first preset time, the refrigerating evaporator is still in the non-refrigerating state, or the first fan is controlled to rotate forwardly after defrosting of the refrigerating evaporator is finished, hot air generated in the refrigerating cooling chamber due to defrosting of the refrigerating evaporator can be discharged outside the refrigerator body through the refrigerating air guide pipe, and then the hot air is dissipated to the environment space, the influence of defrosting operation of the refrigerating evaporator on the temperature in the refrigerating chamber is reduced, the time for recovering the refrigerating temperature when the refrigerating chamber refrigerates again is shortened, and the energy consumption of the refrigerator is further reduced.
Furthermore, the refrigerator also comprises a refrigerating heater which is positioned below the refrigerating evaporator and above the refrigerating air guide pipe, when the refrigerating evaporator starts to defrost, the refrigerating heater is started, and the refrigerating evaporator can be defrosted quickly by using heat generated by the refrigerating heater. Meanwhile, when the first fan rotates reversely, the airflow sent into the refrigerating cooling chamber through the refrigerating air guide pipe can be promoted to flow through the refrigerating heater and then flow through the refrigerating evaporator, so that heat generated by the refrigerating heater can be conveniently and uniformly and quickly blown to the refrigerating evaporator, the defrosting efficiency and uniformity of the refrigerating evaporator are further improved, and the problems of quick defrosting at the lower part and slow defrosting at the upper part of the refrigerating evaporator are solved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic side view of a refrigerator according to one embodiment of the present invention;
fig. 2 is a schematic front perspective view of a refrigerator according to one embodiment of the present invention;
FIG. 3 is a schematic block diagram of a refrigeration air duct according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a control method of a refrigerator according to one embodiment of the present invention;
fig. 5 is a schematic flowchart of a refrigerator control method according to another embodiment of the present invention;
fig. 6 is a schematic flowchart of a refrigerator control method according to still another embodiment of the present invention;
fig. 7 is a schematic flowchart of a defrosting process of a freezing evaporator in a control method of a refrigerator according to an embodiment of the present invention;
fig. 8 is a schematic flow chart of a defrosting process of a freezing evaporator in a refrigerator controlling method according to another embodiment of the present invention;
fig. 9 is a schematic flowchart of a defrosting process of a freezing evaporator in a refrigerator controlling method according to still another embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic side view of a refrigerator according to one embodiment of the present invention, and fig. 2 is a schematic front perspective view of the refrigerator according to one embodiment of the present invention. The refrigerators related to the invention are all dual-system refrigerators. The invention provides a control method of a dual-system refrigerator. Referring to fig. 1 and 2, a refrigerator 1 according to the present invention includes a cabinet 10. The refrigerator 10 defines therein a refrigerating chamber 110, a refrigerating cooling chamber 120, a freezing chamber 130, and a freezing cooling chamber 140, and a refrigerating evaporator 21 and a freezing evaporator 22 are respectively provided in the refrigerating cooling chamber 120 and the freezing cooling chamber 140. The refrigerating evaporator 21 and the freezing evaporator 22 are independent of each other and are used to supply cooling energy to the refrigerating chamber 110 and the freezing chamber 130, respectively. Since the structure of the dual system refrigerator is generally known to those skilled in the art, it will not be described herein.
Further, the refrigerator 1 further includes a refrigerating drain pipe 81 for draining the defrosted water generated by the refrigerating evaporator 21 out of the refrigerating cooling chamber 120, and a refrigerating air guide duct 30 independent from the refrigerating drain pipe 81. The structure of the refrigerating drain pipe 81 is similar to that of a conventional refrigerator, and thus, a detailed description thereof is omitted. Fig. 3 is a schematic structural view of a refrigerating duct according to an embodiment of the present invention. The refrigerating air duct 30 communicates the refrigerating cooling chamber 120 with the external environment space of the box body 10, a first fan 33 is arranged inside the refrigerating air duct 30, and the first fan 33 can rotate forward or backward in a controlled manner.
Fig. 4 is a schematic flowchart of a control method of a refrigerator according to one embodiment of the present invention. The control method of the invention comprises the following steps:
step S102, in the operation process of the refrigerator 1, determining whether the refrigeration evaporator 21 is in a refrigeration state in which a refrigerant flows; if not, go to step S104;
in step S104, the first fan 33 is controlled to rotate reversely to promote the ambient air outside the box 10 to flow to the refrigerating and cooling chamber 120 through the refrigerating air duct 30, so as to defrost the refrigerating evaporator 21 with the ambient air.
It should be noted that the refrigerating state of the refrigerating evaporator 21 referred to in the present invention means that a refrigerant flows therein, that is, in the refrigerating state thereof, a refrigerant flows therein. The non-cooling state of the refrigerating evaporator 21 referred to in the present invention means a state in which no refrigerant flows therein, that is, a state in which the refrigerating evaporator 21 is not cooling, which includes other states of the refrigerating evaporator 21 than the cooling state, for example, a defrosting state in a defrosting process, a pause state in which cooling is temporarily not performed, and the like.
It will be understood by those skilled in the art that the refrigerator 1 may air defrost the refrigerating evaporator 21 in the refrigerating and cooling chamber 120 with only the above-mentioned ambient air, or may defrost the refrigerating evaporator 21 in combination with other defrosting devices of the refrigerator 1, such as the refrigerating heater 71 mentioned in the following embodiments.
The dual system refrigerator of the present invention includes a refrigerating duct 30, and a first fan 33 is provided therein. In the operation process of the refrigerator 1, when the refrigeration evaporator 21 is in a non-refrigeration state without flowing refrigerant, the first fan 33 is controlled to rotate reversely, so that the ambient air outside the box body 10 can be prompted to flow to the refrigeration cooling chamber 120 through the refrigeration air guide pipe 30, and thus the ambient air with relatively high temperature outside the box body 10 (the temperature of the ambient air is higher than the temperature in the refrigerator) is utilized to defrost the refrigeration evaporator 21, the energy consumption of the defrosting heater is reduced, even the defrosting heater can be replaced, and the energy consumption of the refrigerator 1 is reduced. If the refrigerator has heater defrosting, the defrosting efficiency of the refrigerator can be improved. Because the refrigerating evaporator 21 does not have the refrigerant flowing through when the ambient air is used for defrosting the refrigerating evaporator 21, the moisture in the ambient air is not condensed into frost on the refrigerating evaporator 21, and the phenomenon that the refrigerating evaporator 21 is seriously frosted is avoided. In addition, the structure of the existing refrigerator 1 does not need to be greatly changed, and only one air guide pipe needs to be added according to the assembly mode of the traditional refrigerator drain pipe, so that the structure of the refrigerator 1 is simplified.
Fig. 5 is a schematic flowchart of a refrigerator control method according to another embodiment of the present invention. After controlling the first fan 33 to rotate reversely, the control method of the present invention further includes:
step S105, determining whether a first trigger signal for instructing the first fan 33 to rotate forward is received; if yes, go to step S106;
in step S106, the first fan 33 is controlled to rotate forward to force the air in the refrigerated cooling chamber 120 to flow out of the box 10 through the refrigerated air duct 30, so as to discharge the heat generated during defrosting of the refrigerated evaporator 21. Thereby, the influence of the defrosting operation of refrigerating evaporator 21 on the temperature in refrigerating room 110 is reduced, the time for recovering the cooling temperature when refrigerating room 110 is cooled again is shortened, and the power consumption of refrigerator 1 is further reduced.
Wherein the first trigger signal may be generated when any one of the following conditions is satisfied:
the time length of the reverse rotation of the first fan 33 reaches a first preset time length, and the refrigeration evaporator 21 is still in an uncooled state;
the defrosting of the refrigerating evaporator 21 is finished.
When the refrigerating evaporator 21 is in the non-refrigerating state due to the reason that the temperature of the refrigerating chamber 110 reaches the set temperature or the like, the first trigger signal may be generated when the period during which the first fan 33 is reversely rotated reaches the first preset period and the refrigerating evaporator 21 is still in the non-refrigerating state. The first preset time period may be set to be shorter than the total time period during which the refrigeration of the refrigerating evaporator 21 is suspended, so that a time is allowed for controlling the forward rotation of the first fan 33 while the refrigeration of the refrigerating compartment 110 is not affected.
When the refrigerating evaporator 21 is in a non-cooling state due to defrosting, the first trigger signal may be generated when defrosting of the refrigerating evaporator 21 is finished. That is, the first fan 33 may be controlled to rotate forward when defrosting of the refrigerating evaporator 21 is finished, thereby discharging heat generated by defrosting of the refrigerating evaporator 21.
Further, the control method of the present invention further includes:
and step S107, controlling the first fan 33 to stop rotating after the forward rotation time of the first fan 33 reaches a second preset time.
In some embodiments, a first controllable shielding mechanism 35 for selectively blocking and/or conducting the refrigeration air duct 30 is further disposed at the refrigeration air duct 30. Specifically, the first controllable shielding mechanism 35 can be a shield disposed outside the port at the distal end 32 of the refrigeration air duct 30 that is pivotally connected to the first fan 33 to selectively shield and/or open the port at the distal end 32 of the refrigeration air duct 30. The communication between the refrigerating air duct 30 and the environment space is blocked when the shielding plate shields the end 32 port of the refrigerating air duct 30, and the communication between the refrigerating air duct 30 and the environment space is conducted when the shielding plate opens the end 32 port of the refrigerating air duct 30. Further, a sealing member may be disposed on an inner side of the first controllable shielding mechanism 35 facing the first fan 33, so that when the first controllable shielding mechanism 35 shields the end port of the refrigeration air guide duct 30, the sealing member seals the end port of the refrigeration air guide duct 30 with the first controllable shielding mechanism 35, thereby further enhancing the sealing between the two and thoroughly avoiding the loss of the cooling capacity of the refrigerator 1. In other embodiments, the first controllable shielding mechanism 35 may also be a controllable damper disposed inside the refrigerated air duct 30. Further, a waterproof air-permeable member 37 is provided inside one end of the refrigerating air guiding duct 30 connected to the refrigerating cooling chamber 120 to prevent the defrost water from flowing to the refrigerating air guiding duct 30 through the joint portion 313. The waterproof breathable member 37 may be specifically a waterproof breathable film or a waterproof breathable net or the like.
Fig. 6 is a schematic flowchart of a refrigerator control method according to still another embodiment of the present invention. Referring to fig. 6, before the refrigeration evaporator 21 is in the non-cooling state and the first fan 33 is controlled to rotate reversely, the control method of the present invention further includes:
in step S103, the first controllable shielding mechanism 35 is opened to conduct the refrigeration air duct 30.
After the first fan 33 is controlled to stop rotating in step S107, the control method of the present invention further includes:
step S108, the first controllable shielding mechanism 35 is turned off to block the refrigerating air duct 30.
This prevents the cooling energy in the refrigerating cooling chamber 120 from leaking through the refrigerating air guide duct 30 when the first fan 33 is not rotating.
In some embodiments, a refrigerating heater 71 is further disposed in the refrigerating and cooling chamber 120 below the refrigerating evaporator 21, and the control method of the present invention further includes: after receiving a first defrosting start signal for instructing the refrigerating evaporator 21 to start defrosting, the refrigerating heater 71 is controlled to start to heat and defrost the refrigerating evaporator 21. Specifically, the refrigerating heater 71 may be an electric heating wire. The refrigerating heater 71 is preferably disposed adjacently below the refrigerating evaporator 21 such that the refrigerating heater 71 is located above the refrigerating air guide duct 30. Therefore, the airflow sent into the refrigerating and cooling chamber 120 through the refrigerating air duct 30 flows through the refrigerating heater 71 and then flows through the refrigerating evaporator 21, so that the heat generated by the refrigerating heater 71 is conveniently and uniformly and quickly blown to the refrigerating evaporator 21, the defrosting efficiency and uniformity of the refrigerating evaporator 21 are further improved, and the problems of quick defrosting at the lower part and slow defrosting at the upper part of the refrigerating evaporator 21 are solved.
In some embodiments, the non-cooling state of the refrigerating evaporator 21 may include a state in which the refrigerating heater 71 heats and defrosts the refrigerating evaporator 21, and a state in which the compressor of the refrigerator 1 is suspended after the temperature in the refrigerating compartment 110 reaches a set temperature.
In some embodiments, the first defrost initiation signal may be generated when the following conditions are met:
the method comprises the steps of detecting the humidity of an environment space where the refrigerator 1 is located, searching a refrigerating defrosting period matched with the humidity, and generating a first defrosting starting signal after the duration of heating defrosting operation which is not executed by the refrigerator 1 reaches the defrosting period. That is, when the humidity of the ambient space in which the refrigerator 1 is located is different, the activation time of the first defrosting activation signal indicating heating defrosting of the refrigerating evaporator 21 is also different. For example, when the humidity of the environmental space where the refrigerator 1 is located is low, the refrigeration defrosting period may be any value from 2 to 4 days; when the humidity of the environment space where the refrigerator 1 is located is high, the refrigerating and defrosting period can be any value of 10-15 hours.
In some embodiments, after controlling the first fan 33 to reverse, the control method of the present invention further includes: upon receiving a refrigerating and cooling start signal for instructing the refrigerating evaporator 21 to enter a cooling state, the first fan 33 is controlled to stop rotating. That is, when the refrigerating chamber 110 needs to be cooled, the first fan 33 stops rotating after the refrigerating evaporator 21 enters the cooling state.
In some embodiments, when it is detected that the first fan 33 is not started within a preset time period after the first fan 33 is controlled to rotate reversely, or it is detected that the first fan 33 still rotates reversely or stops within a preset time period after the first fan 33 is controlled to rotate normally, or it is detected that the first fan 33 is not stopped within a preset time period after the first fan 33 is controlled to stop, a first fault notification signal indicating that the first fan 33 has a fault is output, so as to facilitate maintenance. When it is detected that the first controllable shielding mechanism 35 is not closed within a preset time period after controlling the first controllable shielding mechanism 35 to be closed, or it is detected that the first controllable shielding mechanism 35 is not opened within a preset time period after controlling the first controllable shielding mechanism 35 to be opened, a second failure prompt signal for indicating that the first controllable shielding mechanism 35 has a failure is output, so as to facilitate maintenance. The first fault prompt signal and the second fault prompt signal can be different so as to distinguish fault causes and conduct targeted maintenance.
In some embodiments, a moisture preservation drawer 111 is disposed in the refrigerating compartment 110, an air supply outlet 112 communicated with the refrigerating and cooling compartment 120 is opened at the rear side of the moisture preservation drawer 111, and an air supply damper 113 is disposed at the air supply outlet 112. In some embodiments, after controlling the first fan 33 to reverse, the control method of the present invention further includes:
detecting the humidity in the moisturizing drawer 111;
when the humidity in the moisture preserving drawer 111 is smaller than a first preset humidity threshold value, the air supply damper 113 is controlled to open the air supply opening 112, so that the air in the refrigerating and cooling chamber 120 is allowed to flow into the moisture preserving drawer 111 through the air supply opening 112 to humidify the space in the moisture preserving drawer 111, and the air supply damper 113 is controlled to close the air supply opening 112 until the humidity in the moisture preserving drawer 111 is larger than a second preset humidity threshold value.
When the first fan 33 is rotated reversely, the ambient air with relatively high humidity outside the cabinet 10 is forced to flow to the refrigerating and cooling chamber 120 through the refrigerating air duct 30 and then is delivered to the refrigerating chamber 110. When the high humidity air flow is not required in the moisture retention drawer 111, the air supply damper 113 closes the air supply opening 112. In this case, the moisturizing drawer 111 is a relatively closed space, and the highly humid air therein does not return to the refrigerating and cooling compartment 120, so that the frost formation of the refrigerating evaporator 21 can be prevented from being more serious. In addition, the refrigerator body structure of the existing refrigerator is not required to be changed, and the structure of the refrigerator is simplified.
It is understood that the first predetermined humidity threshold and the second predetermined humidity threshold may be relative humidity values predetermined in the refrigerator, for example, the first predetermined humidity threshold may be any humidity value between 50% and 70%, and the second predetermined humidity threshold may be any humidity value between 85% and 95%.
But this application can ensure to have the environment of moisturizing of predetermineeing humidity in the drawer 111 of moisturizing through set up first fan 33 of antiport in cold-stored guide duct 30, and the structure is very simple, has abandoned traditional design thoughts such as setting up the moisturizing membrane on the moisturizing drawer among the prior art, moisture permeable membrane or humidifier completely, and the design thinking is ingenious, and it is respond well to moisturize.
In some embodiments, the ends 32 of the refrigeration ducts 30 extending outward of the cabinet 10 are all located within a compressor compartment 150 of the refrigerator 1, and the compressor compartment 150 is in communication with the ambient space. The compressor 50 and the water pan 60 are disposed in the compressor compartment 150, and the end of the refrigeration drain pipe 81 extending out of the box body 10 extends into the water pan 60, so as to collect defrosting water generated during defrosting of the refrigeration evaporator 21 into the water pan 60. Because the compressor 50 and other components with larger heat generation quantity are arranged in the compressor bin 150, the temperature in the compressor bin is usually higher, and the defrosting water in the water receiving tray 60 is evaporated to ensure that the humidity in the compressor bin 150 is higher, so that the humidity in the space where the tail end 32 of the refrigeration air guide pipe 30 is located is further improved. When the first fan 33 is rotated reversely, the air flow with high humidity in the compressor compartment 150 can be delivered to the refrigerating and cooling chamber 120, so that the humidity in the moisturizing drawer 111 is rapidly increased, and the moisturizing efficiency is improved. When the first fan 33 needs to be reversed due to defrosting of the refrigeration evaporator 21, the air flow with high temperature in the compressor bin 150 can be conveyed to the refrigeration cooling chamber 120, so that auxiliary defrosting is performed on the refrigeration evaporator 21, and the defrosting efficiency of the refrigeration evaporator 21 is further improved.
Specifically, the water tray 60 may be disposed above the compressor 50 to accelerate evaporation of the defrosted water collected in the water tray 60 by using heat generated when the compressor 50 operates.
In some embodiments, the bottom wall 122 of the refrigerated cooling chamber 120 may include a plurality of slopes extending obliquely downward from a circumferential edge thereof to a middle thereof, and the drain opening 121 is formed at an intersection or a lowest end of the plurality of slopes. The refrigerating drain pipe 81 communicates with the drain port 121, and thus communicates with the refrigerating cooling chamber 120. The starting end 31 of the refrigerating air guide pipe 30 communicated with the refrigerating cooling chamber 120 is higher than the bottom wall 122 of the refrigerating cooling chamber 120 so as to prevent the defrosting water from entering the refrigerating air guide pipe 30. The inside diameter of the starting end 31 of the refrigerating air guide duct 30 gradually increases outward in the axial direction of the refrigerating air guide duct 30. That is, the upper starting end 31 of the refrigerating air guiding duct 30 is gradually enlarged from bottom to top, so that the cross-sectional area of the air flowing out from the refrigerating air guiding duct 30 can be increased, the contact area between the air and the refrigerating evaporator 21 is increased, and the defrosting uniformity of the refrigerating evaporator 21 is further improved.
In some embodiments, the inner diameter of the end 32 of the refrigeration air duct 30 that extends outwardly of the cabinet 10 gradually increases outwardly along the axial direction of the refrigeration air duct 30. That is, the lower end 32 of the refrigeration air duct 30 is gradually enlarged from top to bottom, and the area of the port of the end 32 is increased, so that the air inlet area of the refrigeration air duct 30 is enlarged when the first fan 33 rotates in the reverse direction, and the air inlet amount and the auxiliary defrosting effect are improved.
The structure of the refrigeration air guide pipe 30 with thick ends and thin middle can ensure that the inner diameter of the part of the refrigeration air guide pipe 30 in the box body heat insulation layer is smaller, so as to reduce the influence of the refrigeration air guide pipe 30 on the box body heat insulation performance as much as possible.
In some embodiments, the refrigerator 1 further includes a freezing water discharging pipe 82 for discharging the defrosting water generated by the freezing evaporator 22, and a freezing air guiding pipe 40 independent from the freezing water discharging pipe 82, the freezing air guiding pipe 40 communicates the freezing cooling chamber 140 with the external environment space of the cabinet 1, and the second fan 43 is disposed inside the freezing air guiding pipe 40. The freezing air guide duct 40 and the refrigerating air guide duct 30 have substantially the same structure, and will not be described in detail. The freezing and cooling chamber 140 is provided with a freezing heater 72 disposed below the freezing evaporator 22.
Fig. 7 is a schematic flowchart of a defrosting process of a freezing evaporator in a refrigerator controlling method according to one embodiment of the present invention. In some embodiments, the control method of the present invention further comprises:
step S112, receiving a second defrosting start signal for instructing the freezing evaporator 22 to start defrosting;
step S114, the freezing heater 72 is activated to heat the freezing evaporator 22 for defrosting, and the second fan 43 is controlled to rotate reversely to force the ambient air outside the cabinet 10 to flow to the freezing and cooling chamber 140 through the freezing air duct 40, so that the ambient air is used to assist in defrosting the freezing evaporator 22, thereby improving the defrosting efficiency of the freezing evaporator 22.
Since the refrigerator 1 is a dual-system refrigerator, the freezing evaporator 22 and the refrigerating evaporator 21 are independent of each other, and thus defrosting processes of the two are not affected by each other. That is, there is no restriction on the sequence between step S112 and step S102, i.e., step S112 may occur before or after any of step S102 to step S108.
Further, the freezing heater 72 is preferably disposed adjacently below the freezing evaporator 22 such that the freezing heater 72 is located above the freezing air duct 40. Therefore, the air flow sent into the freezing and cooling chamber 140 through the freezing air guide pipe 40 flows through the freezing heater 72 and then flows through the freezing evaporator 22, so that the heat generated by the freezing heater 72 is conveniently and uniformly and quickly blown to the freezing evaporator 22, the defrosting efficiency and uniformity of the freezing evaporator 22 are further improved, and the problems of quick defrosting at the lower part and slow defrosting at the upper part of the freezing evaporator 22 are avoided.
Fig. 8 is a schematic flowchart of a defrosting process of a freezing evaporator in a refrigerator controlling method according to another embodiment of the present invention. In some embodiments, the control method of the present invention further comprises:
step S115, determining whether to receive a second trigger signal for instructing the second fan 43 to rotate forward; the second trigger signal is generated when the heating defrosting of the freezing evaporator 22 is finished; if yes, go to step S116;
in step S116, the second fan 43 is controlled to rotate forward to force the air in the freezing and cooling chamber 140 to flow out of the box 10 through the freezing air duct 40, so as to discharge the heat generated by defrosting the freezing evaporator 22. Thereby, the influence of the defrosting operation of the freezing evaporator 22 on the temperature in the freezing chamber 130 is reduced, the time for recovering the cooling temperature when the freezing chamber 130 performs cooling again is shortened, and the power consumption of the refrigerator 1 is further reduced.
In some embodiments, a second controllable shielding mechanism 45 for selectively blocking and/or conducting the refrigeration air duct 40 is further disposed at the refrigeration air duct 40. Since the second controllable shutter mechanism 45 has the same structure as the first controllable shutter mechanism 35, it will not be described in detail here.
Fig. 9 is a schematic flowchart of a defrosting process of a freezing evaporator in a refrigerator controlling method according to still another embodiment of the present invention. In some embodiments, after receiving the second frost start signal and before starting the freezing heater 72, that is, after step S112 and before step S114, the control method of the present invention further includes:
in step S113, the second controllable shielding mechanism 45 is opened to conduct the refrigeration air duct 40.
Further, after the step S116 of controlling the second fan 43 to rotate forward, the control method of the present invention further includes:
step S118, the second controllable shielding mechanism 45 is closed to block the refrigeration air duct 40. This prevents the cooling energy in the freezing and cooling chamber 140 from leaking through the freezing air duct 40 when the second fan 43 is stopped.
In some embodiments, the ends of the refrigeration ducts 40 that extend outwardly of the cabinet 10 are also located within the compressor compartment 150 of the refrigerator 1.
It should also be understood by those skilled in the art that the terms "upper", "lower", "front", "rear", and the like used in the embodiments of the present invention to indicate the orientation or the positional relationship are based on the actual use state of the refrigerator 1, and these terms are only used for convenience of description and understanding of the technical solutions of the present invention, and do not indicate or imply that the devices referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A control method of a double-system refrigerator comprises a refrigerator body, wherein a refrigerating chamber, a refrigerating cooling chamber, a freezing chamber and a freezing cooling chamber are limited in the refrigerator body, a refrigerating evaporator and a freezing evaporator are respectively arranged in the refrigerating cooling chamber and the freezing cooling chamber, the refrigerator further comprises a refrigerating drain pipe and a refrigerating air guide pipe, the refrigerating drain pipe is used for draining defrosting water generated by the refrigerating evaporator out of the refrigerating cooling chamber, the refrigerating air guide pipe is mutually independent of the refrigerating drain pipe, the refrigerating air guide pipe is communicated with the refrigerating cooling chamber and an external environment space where the refrigerator body is located, and a first fan is arranged inside the freezing air guide pipe; and the control method comprises the following steps:
judging whether the refrigeration evaporator is in a refrigeration state in which a refrigerant flows through or not in the running process of the refrigerator; and
and if the refrigeration evaporator is in a non-refrigeration state except the refrigeration state, controlling the first fan to rotate reversely so as to promote the ambient air outside the box body to flow to the refrigeration cooling chamber through the refrigeration air guide pipe, so that the ambient air is utilized to defrost the refrigeration evaporator.
2. The control method according to claim 1, wherein after controlling the first fan to reverse, the control method further comprises:
judging whether a first trigger signal for indicating the first fan to rotate positively is received or not;
if so, controlling the first fan to rotate positively to promote the air in the refrigerating and cooling chamber to flow out of the box body through the refrigerating air guide pipe, so as to discharge the heat generated when the refrigerating evaporator is defrosted.
3. The control method according to claim 2, wherein the first trigger signal is generated when any one of the following conditions is satisfied:
the reverse rotation time of the first fan reaches a first preset time, and the refrigeration evaporator is still in the non-refrigeration state;
and finishing defrosting of the refrigeration evaporator.
4. The control method according to claim 2, further comprising:
and when the forward rotation time of the first fan reaches a second preset time, controlling the first fan to stop rotating.
5. The control method according to claim 4, wherein a first controllable shielding mechanism for selectively blocking and/or conducting the refrigeration air guide pipe is further arranged at the refrigeration air guide pipe; and is
When the refrigeration evaporator is in the non-refrigeration state and before the first fan is controlled to rotate reversely, the control method further comprises the following steps: opening the first controllable shielding mechanism to conduct the refrigeration air guide pipe;
after controlling the first fan to stop rotating, the control method further comprises the following steps: and closing the first controllable shielding mechanism to block the refrigeration air guide pipe.
6. The control method according to claim 1, wherein a refrigerating heater is further provided in the refrigerating cooling chamber below the refrigerating evaporator, and the control method further comprises:
after receiving a first defrosting starting signal used for indicating the refrigerating evaporator to start defrosting, controlling the refrigerating heater to start so as to heat and defrost the refrigerating evaporator.
7. The control method according to claim 6,
the non-refrigeration state of the refrigeration evaporator comprises a state that the refrigeration heater heats and defrosts the refrigeration evaporator and a state that a compressor of the refrigerator stops running after the temperature in the refrigeration chamber reaches a set temperature.
8. The control method according to claim 6, wherein the first frost start signal is generated when:
detecting the humidity of an environmental space where the refrigerator is located;
searching a refrigeration defrosting period matched with the humidity;
the first defrosting start signal is generated when the duration of the heating defrosting operation not performed by the refrigerator reaches the defrosting period.
9. The control method according to claim 1, wherein the refrigerator further comprises a freezing drain pipe for discharging defrosting water generated by the freezing evaporator and a freezing air guide pipe independent from the freezing drain pipe, the freezing air guide pipe is communicated with the freezing cooling chamber and an external environment space where the refrigerator body is located, a second fan is arranged inside the freezing air guide pipe, and a freezing heater positioned below the freezing evaporator is arranged in the freezing cooling chamber; and the control method comprises the following steps:
receiving a second defrost initiation signal indicating initiation of defrost of the freeze evaporator;
and starting the freezing heater to heat and defrost the freezing evaporator, and controlling the second fan to reversely rotate to promote the ambient air outside the box body to flow to the freezing and cooling chamber through the freezing air guide pipe, so that the ambient air is used for assisting in defrosting the freezing evaporator.
10. The control method according to claim 9, wherein after controlling the second fan to reverse, the control method further comprises:
judging whether a second trigger signal for indicating the second fan to rotate forwards is received or not, wherein the second trigger signal is generated when the refrigeration evaporator is heated and defrosted;
if so, controlling the second fan to rotate forwards to promote the air in the freezing and cooling chamber to flow out of the box body through the freezing air guide pipe, so as to discharge the heat generated when the freezing evaporator defrosts.
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| CN202010442903.0A CN113701427A (en) | 2020-05-22 | 2020-05-22 | Control method of dual-system refrigerator |
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| CN202010442903.0A CN113701427A (en) | 2020-05-22 | 2020-05-22 | Control method of dual-system refrigerator |
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Cited By (1)
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