CN105987560B - Refrigerator and control method thereof - Google Patents
Refrigerator and control method thereof Download PDFInfo
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- CN105987560B CN105987560B CN201510044244.4A CN201510044244A CN105987560B CN 105987560 B CN105987560 B CN 105987560B CN 201510044244 A CN201510044244 A CN 201510044244A CN 105987560 B CN105987560 B CN 105987560B
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- 238000010257 thawing Methods 0.000 claims description 44
- 238000005057 refrigeration Methods 0.000 claims description 23
- 238000005086 pumping Methods 0.000 claims description 13
- 238000007710 freezing Methods 0.000 claims description 7
- 230000008014 freezing Effects 0.000 claims description 7
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- 238000005265 energy consumption Methods 0.000 description 8
- 230000002411 adverse Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 6
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- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000003507 refrigerant Substances 0.000 description 1
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- 230000002393 scratching effect Effects 0.000 description 1
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Abstract
本发明提供了一种冰箱及其控制方法。该冰箱包括蒸发器和至少一个储物间室，该冰箱还包括蓄冷系统，蓄冷系统包括：第一储液装置，设置在一个储物间室内，用于容装受控地注入其中的蓄冷液；至少一个第二储液装置，与蒸发器热连接，且与第一储液装置之间通过管路可控地连通，其中每个第二储液装置用于容装受控地注入其中的蓄冷液；以及循环泵，配置成受控地将第一储液装置中的蓄冷液泵送至每个第二储液装置中，以及将每个第二储液装置中的蓄冷液泵送至第一储液装置中。本发明可将蓄冷液存储在第二储液装置中蓄冷；当需要利用蓄冷液的冷量对储物间室进行制冷时，将蓄冷液泵送至第一储液装置中释放冷量。
The invention provides a refrigerator and a control method thereof. The refrigerator includes an evaporator and at least one storage compartment, the refrigerator further includes a cold storage system, and the cold storage system includes: a first liquid storage device, disposed in one storage compartment, for containing the cold storage liquid controlledly injected therein ; at least one second liquid storage device, thermally connected to the evaporator, and in controllable communication with the first liquid storage device through pipelines, wherein each second liquid storage device is used to contain controlled injection into it. cold storage liquid; and a circulation pump configured to controllably pump the cold storage liquid in the first liquid storage device to each of the second liquid storage devices, and pump the cold storage liquid in each second liquid storage device to the in the first liquid storage device. The invention can store the cold storage liquid in the second liquid storage device for cold storage; when the storage compartment needs to be refrigerated by using the cold energy of the cold storage liquid, the cold storage liquid is pumped to the first liquid storage device to release the cold energy.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator and a control method thereof.
Background
After a current air-cooled refrigerator runs for a period of time, frost can be formed on an evaporator, and when the frost is formed to a certain degree, a compressor is required to be stopped to defrost the evaporator. At present, the refrigerator mainly utilizes the electric heating wire to defrost, and the temperature of a freezing chamber can rise due to the influence of two factors, namely the shutdown of a compressor and the heating of the electric heating wire. When the evaporator is defrosted, the compressor works again to cool the freezing chamber, and the work load of the compressor is increased. Repeating the above steps not only increases the energy consumption of the refrigerator, but also is not beneficial to the food stored in the freezing chamber.
Disclosure of Invention
It is an object of the present invention to overcome at least one of the drawbacks of the prior art by providing a refrigerator that reduces temperature fluctuations in its storage compartment during defrosting of the evaporator.
A further object of the present invention is to reduce the energy consumption of the refrigerator.
Another further object of the present invention is to provide a control method for a refrigerator.
According to one aspect of the present invention, there is provided a refrigerator comprising an evaporator and at least one storage compartment, the refrigerator further comprising a cold storage system comprising:
the first liquid storage device is arranged in one storage room and is used for containing the cold storage liquid injected into the storage room in a controlled manner;
at least one second liquid storage device which is thermally connected with the evaporator and is controllably communicated with the first liquid storage device through a pipeline, wherein each second liquid storage device is used for containing cold accumulation liquid which is injected into the second liquid storage device in a controlled manner; and
and the circulating pump is configured to controllably pump the cold storage liquid in the first liquid storage device to each second liquid storage device and pump the cold storage liquid in each second liquid storage device to the first liquid storage device.
Optionally, the first fluid storage device is a volume-variable, collapsible fluid storage bag or cartridge that expands when containing the cold storage fluid and contracts when the cold storage fluid therein is evacuated.
Optionally, the first liquid storage device is unfolded to be flat when containing the cold storage liquid, and extends downwards adjacent to the rear wall of the storage compartment;
when the cold storage liquid is pumped out, the cold storage liquid is shrunk or telescoped at the corner part between the rear wall and the top wall of the storage chamber in a shrinking state with reduced volume.
Optionally, the at least one second liquid reservoir is disposed between the evaporator and an inner wall of an evaporator chamber in which the evaporator is disposed.
Optionally, each of the second fluid storage devices is a collapsible fluid storage bag, each of the collapsible fluid storage bags being configured to:
when the liquid storage bag is filled with the cold storage liquid, the volume of the liquid storage bag is expanded, so that at least one part of the telescopic liquid storage bag is attached to the evaporator; and is
The telescopic liquid storage bag is contracted when the cold storage liquid in the telescopic liquid storage bag is pumped out, so that at least one part of the surface of the telescopic liquid storage bag facing to the evaporator is far away from the evaporator.
Optionally, the retractable reservoir bag is a flexible reservoir bag secured to the evaporator chamber inner wall and configured to:
when the flexible storage bag is filled with the cold storage liquid, at least part of the surface of one side of the evaporator is attached to the surface of the evaporator in a profiling mode, so that the cold storage liquid in the flexible storage bag can absorb cold from the evaporator; and is
The at least partial surface collapses away from the evaporator surface when the cold accumulation liquid therein is evacuated.
Optionally, the cold storage system comprises a plurality of second liquid storage devices, and the plurality of second liquid storage devices are respectively arranged in different areas or parts of the evaporator to absorb cold from the evaporator.
Optionally, the storage chamber provided with the first liquid storage device is a freezing chamber.
Optionally, the circulation pump is further configured to:
when the refrigerator is in an evaporator defrosting state, the cold accumulation liquid in each second liquid storage device is pumped into the first liquid storage device, and
and after the defrosting state of the evaporator is finished, the refrigerator enters a refrigeration cycle state, and the cold accumulation liquid in the first liquid storage device is pumped into each second liquid storage device.
Optionally, pumping the cold accumulation liquid in the first liquid storage device to each second liquid storage device is performed after the defrosting state of the evaporator is finished and when the compressor of the refrigerator is stopped for the first time.
Optionally, pumping the cold accumulation liquid in the first liquid storage device to each second liquid storage device is performed after the defrosting state of the evaporator is finished and the temperature of the evaporator is firstly reduced to a preset temperature.
Optionally, the preset temperature is-18 ℃.
According to another aspect of the present invention, there is provided a control method for any one of the above refrigerators, comprising:
when the refrigerator is in an evaporator defrosting state, the cold accumulation liquid in each second liquid storage device is pumped into the first liquid storage device, and
and after the defrosting state of the evaporator is finished, the refrigerator enters a refrigeration cycle state, and the cold accumulation liquid in the first liquid storage device is pumped into each second liquid storage device.
Optionally, pumping the cold accumulation liquid in the first liquid storage device to each second liquid storage device is performed after the defrosting state of the evaporator is finished and when the compressor of the refrigerator is stopped for the first time.
Optionally, pumping the cold accumulation liquid in the first liquid storage device to each second liquid storage device is performed after the defrosting state of the evaporator is finished and the temperature of the evaporator is firstly reduced to a preset temperature.
Optionally, the preset temperature is-18 ℃.
The cold accumulation system of the refrigerator can store cold accumulation liquid in the second liquid storage device thermally connected with the evaporator for cold accumulation; when the cold energy of cold-storage liquid is needed to refrigerate the storage chamber, the cold energy is released by pumping the cold-storage liquid into the first liquid storage device by the circulating pump, and the control is very flexible. Since the evaporator of a typical refrigerator has a lower temperature than its storage compartment, the same cold storage liquid of the same volume can provide more cold in the cold storage system of the invention than if the cold storage liquid were placed directly in the storage compartment.
Further, when the evaporator works normally, the cold accumulation liquid is stored in the second liquid storage device which is thermally connected with the evaporator for cold accumulation; when the refrigerator is in the evaporator defrosting state, the cold accumulation liquid in each second liquid storage device is pumped into the first liquid storage device, cold accumulation liquid is used for providing cold energy for the storage chamber, the temperature of the storage chamber is prevented from greatly rising when the evaporator defrosting state is achieved, and adverse effects on food stored in the storage chamber due to large temperature fluctuation in the storage chamber are avoided. In addition, after the defrosting of the evaporator is finished, the compressor works again to cool the storage chamber, and the temperature in the storage chamber rises to a small extent or does not rise basically, so that the workload of cooling the compressor is relatively small.
Furthermore, when the evaporator of the refrigerator works normally, the first liquid storage device does not contain cold storage liquid, and the first liquid storage device is curled or folded at a corner part between the rear wall and the top wall of the storage chamber in a shrinking state with a reduced volume, so that the storage space of the storage chamber is not occupied; when the evaporimeter defrosts, there is cold storage liquid in the first stock solution device, and it pastes and leans on storing compartment back wall, does not occupy storing compartment storing space or occupy very little storing space in it basically.
In the prior art, a cold storage box is separately arranged in a storage chamber to reduce temperature fluctuation, and a large amount of valuable effective volume of the storage chamber is occupied; the total energy consumption of the refrigerator caused by defrosting is not reduced (because the cold storage agent needs the compressor to provide cold energy for cooling and storing cold after defrosting is finished). In contrast, the invention can effectively reduce the temperature fluctuation of the storage compartment during defrosting while not occupying the effective volume of the refrigerator during defrosting, and reduce the total energy consumption of the refrigerator caused by defrosting.
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 view of a refrigerator according to one embodiment of the present invention;
FIG. 2 is a schematic view of a storage compartment with a cold storage liquid in a first liquid storage device, according to one embodiment of the present invention;
FIG. 3 is a schematic view of the storage compartment of the embodiment of FIG. 2 with the cold storage liquid in the second liquid storage device;
fig. 4 is a schematic view of the evaporator chamber with the cold storage liquid in the second liquid storage device, in accordance with one embodiment of the present invention;
fig. 5 is a schematic view of an evaporator chamber with a cold storage liquid in a second liquid storage device according to another embodiment of the invention;
fig. 6 is a schematic view of the evaporator chamber of the embodiment of fig. 5 with the cold storage liquid in the first liquid storage device;
fig. 7 is a schematic view of an evaporator chamber with a cold storage liquid in a second liquid storage device, according to yet another embodiment of the invention.
Detailed Description
The embodiments of the invention will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings, and the embodiments described hereinafter with reference to the drawings are illustrative only and are not to be construed as limiting the invention. In the description of the present invention, the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, are not to be construed as limiting the present invention.
Fig. 1 is a schematic view of a refrigerator according to one embodiment of the present invention. Referring to fig. 1, a refrigerator according to an embodiment of the present invention may include an evaporator 30, at least one storage compartment, and a cold storage system. As will be understood by those skilled in the art, the refrigerator according to the embodiment of the present invention may further include a compressor (not shown), a condenser (not shown), a throttling element (not shown), and the like, in addition to the evaporator 30. In other embodiments, the refrigerator of the embodiment of the present invention may also be a semiconductor refrigeration refrigerator, which includes a semiconductor refrigeration sheet, and a cold end of the semiconductor refrigeration sheet is thermally connected to the evaporator 30 to provide refrigeration to the evaporator 30.
In an embodiment of the present invention, the cold storage system may include a first reservoir 73, at least one second reservoir 74, and a circulation pump 72. Wherein the first liquid storage device 73 is arranged in one of the storage compartments for containing the cold storage liquid injected thereinto in a controlled manner. At least one second reservoir 74 is thermally connected to the evaporator 30 and is in controllable communication with the first reservoir 73 via the conduit 71, wherein each second reservoir 74 is adapted to contain a controlled charge of cold storage fluid. The circulation pump 72 is configured to controllably pump cold storage fluid from the first fluid reservoir 73 into each second fluid reservoir 74, and to pump cold storage fluid from each second fluid reservoir 74 into the first fluid reservoir 73.
The refrigerator of the embodiment of the present invention may store the cold storage liquid in the second liquid storage device 74 thermally connected to the evaporator 30 for cold storage; when the cold energy of the cold accumulation liquid is needed to refrigerate the storage chamber, the cold accumulation liquid is pumped to the first liquid storage device 73 by the circulating pump 72 to release the cold energy, and when the cold energy of the cold accumulation liquid is not needed to refrigerate the storage chamber, the cold accumulation liquid is pumped to the second liquid storage device 74 by the circulating pump 72 to absorb the cold energy, so that the control is very convenient. Since the evaporator 30 of a typical refrigerator has a lower temperature than its storage compartment, the same cold storage liquid of the same volume can provide more cold in the cold storage system of the present invention than if the case containing the cold storage liquid was placed directly in the storage compartment.
Further, the refrigerator according to the embodiment of the present invention can store the cold storage liquid in the second liquid storage device 74 thermally connected to the evaporator 30 for cold storage when the evaporator 30 is normally operated; when the refrigerator is in the evaporator defrosting state, the cold accumulation liquid in each second liquid storage device 74 is pumped into the first liquid storage device 73, cold accumulation liquid is used for providing cold energy for the storage chamber, and the temperature of the storage chamber is prevented from greatly rising in the evaporator defrosting state, so that adverse effects on food stored in the storage chamber due to large temperature fluctuation in the storage chamber are avoided. In addition, when the evaporator 30 is defrosted and the compressor works again to cool the storage chamber, the temperature in the storage chamber rises to a small extent or does not rise basically, so that the workload of cooling the compressor is relatively small.
In some embodiments, the cold storage liquid may be selected to have a low phase transition temperature point or a high specific heat capacity, and may be, for example, saline. Of course, other cold storage liquids commonly used in the refrigeration technology field may be used.
In some embodiments, the first fluid reservoir 73 may be a variable volume collapsible fluid bag that expands when containing a cold storage fluid and contracts when the cold storage fluid therein is evacuated. Specifically, when the circulation pump 72 pumps the cold storage liquid in each second liquid storage device 74 into the first liquid storage device 73, the first liquid storage device 73 expands with the pressure of the injected cold storage liquid; when the circulation pump 72 pumps the cold accumulation liquid in the first liquid storage device 73 into each second liquid storage device 74, the first liquid storage device 73 contracts along with the drawing-off of the cold accumulation liquid. In a specific embodiment, the surface of the telescopic liquid storage bag is corrugated, so that the bag body can be freely stretched.
In the embodiment of the present invention, when the refrigerator is in the refrigeration cycle state, the cold accumulation liquid is stored in the second liquid storage device 74, and the first liquid storage device 73 does not have the cold accumulation liquid therein. By designing the first liquid storage device 73 to be of a telescopic structure, the first liquid storage device 73 can be compressed to reduce the occupied space of the first liquid storage device 73, and the first liquid storage device can occupy no or less storage space of the storage chamber as much as possible.
Fig. 2 and 3 show schematic views of a storage compartment with a cold storage fluid in a first and second reservoir device, respectively, in one embodiment of the invention. Referring to fig. 2 and 3, the first liquid storage device 73 is unfolded to be flat when containing the cold storage liquid, and the rear wall of the storage compartment adjacent to the first liquid storage device extends downward; when the cold storage liquid is pumped out, the cold storage liquid is shrunk at the corner part between the back wall and the top wall of the storage chamber in a shrinking state with reduced volume. In one embodiment, the first fluid reservoir 73 may be similar to a child's toy "blowgun", i.e., when cold storage fluid is pumped into the reservoir, the first fluid reservoir 73 extends (similar to the blowgun extends when blowing into the blowgun); and when the cold storage liquid therein is pumped out, the first liquid storage device 73 is crimped to the opening thereof communicating with the second liquid storage device 74 (similar to the crimping of a blowing dragon when sucking air from the blowing dragon). In these embodiments, when the refrigerator is in the refrigeration cycle state, the first liquid storage device 73 has no cold storage liquid therein, and is crimped at the corner portion between the rear wall and the top wall of the storage compartment, so as not to occupy the effective storage space in the storage compartment. When the storage compartment is refrigerated by the cold storage liquid, the first liquid storage device 73 is unfolded and extends downwards adjacent to the rear wall of the storage compartment, and only occupies a small storage space in the storage compartment.
In other embodiments, the first reservoir 73 is also a variable volume cartridge that expands when it contains the cold storage fluid and contracts when it is evacuated. In some embodiments, the casing has a peripheral wall which is telescopic, for example, in an accordion-like pleated or corrugated configuration, or in a nested telescopic configuration like a simple telescopic telescope. When the circulation pump 72 pumps the cold storage liquid in each second liquid storage device 74 into the first liquid storage device 73, the first liquid storage device 73 expands with the pressure of the injected cold storage liquid; when the circulation pump 72 pumps the cold accumulation liquid in the first liquid storage device 73 into each second liquid storage device 74, the first liquid storage device 73 contracts along with the drawing-off of the cold accumulation liquid. Similar to the previous embodiment, the first fluid storage device 73 is designed to be telescopic and can be retracted to reduce the space occupied by the first fluid storage device 73 when there is no cold storage fluid in the first fluid storage device.
In a further embodiment, the first liquid storage device 73 is unfolded to be flat when containing the cold storage liquid, and extends downwards adjacent to the rear wall of the storage compartment where the first liquid storage device is located; when the cold storage liquid is pumped out, the cold storage liquid is shrunk at the corner part between the back wall and the top wall of the storage chamber in a shrinking state with reduced volume. In one embodiment, the top and bottom surfaces of the first reservoir 73 may have the same shape, and the peripheral wall connected between the top and bottom surfaces may have a telescopic structure. When the refrigerator is in a refrigeration cycle state, the first liquid storage device 73 does not contain cold storage liquid, and is folded at a corner part between the rear wall and the top wall of the storage compartment from bottom to top, so that the effective storage space in the storage compartment is not occupied. When the storage compartment is refrigerated by the cold storage liquid, the first liquid storage device 73 is unfolded from top to bottom and extends adjacent to the rear wall of the storage compartment, and only occupies a small storage space in the storage compartment.
As will be appreciated by those skilled in the art, in a plurality of storage compartments of a refrigerator, each storage compartment may be provided with a first liquid storage device 73. In some embodiments, the plurality of storage compartments of the refrigerator include at least one freezer compartment and at least one cold storage compartment 10. In a preferred embodiment, the storage compartment provided with the first reservoir 73 may be the freezer compartment 20. In an alternative embodiment, the storage compartment provided with the first liquid storage device 73 may also be the refrigerating compartment 10. In some embodiments, the freezer compartment 20 may be one compartment within the freezer compartment, i.e., the freezer compartment may include a plurality of freezer compartments 20, and the plurality of freezer compartments 20 may be separated by partitions. Thus, the first reservoir 73 may be disposed at a corner portion between the rear wall of the freezing compartment 20 and the top wall of the freezing compartment; or at the corner between the rear wall of the freezer compartment 20 and its top partition.
In some embodiments, the refrigerator may include an evaporator chamber 50 for disposing the evaporator 30, and a blower 80 is further disposed in the evaporator chamber 50 for blowing cooling energy of the evaporator 30 to a plurality of storage compartments of the refrigerator through the air duct 40. The cold storage system can include one or more second reservoirs 74, each second reservoir 74 can be disposed between the evaporator 30 and the interior wall of the evaporator chamber 50. When one second reservoir 74 is provided, it can be secured by gluing or snapping to the bottom wall of the evaporator chamber 50 or to two opposing side walls of the evaporator chamber 50 adjacent to the inner wall of the evaporator chamber where the fan 80 is located.
Fig. 4 is a schematic view of the evaporator chamber with the cold storage liquid in the second liquid storage device, according to one embodiment of the invention. Referring to fig. 4, when the second reservoir 74 is relatively bulky, it can be disposed in the bottom wall and the two opposing side walls of the evaporator chamber 50. In some embodiments, where the cold storage system includes a plurality of separate second liquid reservoirs 74, the plurality of second liquid reservoirs 74 are each disposed in a different region or location of the evaporator 30 to absorb cold from the evaporator 30. In other words, the plurality of second liquid reservoirs 74 are each positioned against or adjacent to a different area or location of the evaporator 30 to absorb cold from the evaporator 30.
In some embodiments, each of the second liquid reservoirs 74 can be disposed in a bottom wall of the evaporator chamber 50, one of two opposing side walls of the evaporator chamber 50 adjacent to an inner wall of the evaporator chamber 50 where the fan 80 is located, respectively. The cold storage system may further include a multi-pass pipe, one port of which communicates with the first liquid storage device 73 through the circulation pump 72, and the other ports of which communicate with each of the second liquid storage devices 74, respectively. In one embodiment, the manifold may be valved at each port (or valved at a port in communication with each second reservoir 74), and the circulation pump 72 sequentially pumps the cold thermal storage fluid from each second reservoir 74 into the first reservoir 73 or sequentially pumps the cold thermal storage fluid from the first reservoir 73 into each second reservoir 74. In an alternative embodiment, the manifold may not be provided with a valve, and the circulation pump 72 may pump the cold storage fluid in each second liquid storage device 74 to the first liquid storage device 73 at the same time, or pump the cold storage fluid in the first liquid storage device 73 to each second liquid storage device 74 at the same time.
In some embodiments, each second reservoir 74 may also be a collapsible reservoir, each collapsible reservoir configured to: when the cold storage liquid is contained, the volume is expanded, so that at least one part of the telescopic liquid storage bag is attached to the evaporator 30; and contracts when the cold storage liquid therein is evacuated so that at least a portion of the surface of the collapsible reservoir facing at least the evaporator 30 is remote from the evaporator 30. In these embodiments, when the refrigerator is in a refrigeration cycle, the cold storage liquid is stored in the second liquid storage device 74 such that the second liquid storage device 74 is unfolded, with a portion of the surface of the second liquid storage device 74 abutting the evaporator 30, and cold is absorbed from the evaporator 30 by heat transfer; when the cold storage liquid is used for refrigerating the storage compartment, the cold storage liquid is drawn out of the second liquid storage device 74, so that the second liquid storage device 74 collapses or contracts, and at least a part of the surface, facing the evaporator 30, of the second liquid storage device 74 after the second liquid storage device 74 collapses or contracts is far away from the evaporator 30. With this arrangement, the second liquid storage device 74 can be brought into full contact with the evaporator 30 as much as possible when the refrigerator is in a refrigeration cycle state, thereby reducing the gap; on the one hand, the second liquid storage device 74 can realize good heat exchange with the evaporator 30, and on the other hand, the high-efficiency air supply of the evaporator chamber 50 can also be realized. In addition, when the refrigerator is in the evaporator defrosting state, the second liquid storage device 74 can be separated from the surface of the evaporator 30, so that the evaporator 30 can be favorably accelerated in defrosting due to the fact that the surface of the evaporator is not covered; meanwhile, the evaporator 30 is prevented from contacting the second liquid storage device 74 during defrosting, so that heat is transferred to the second liquid storage device 74, and the aging speed of the second liquid storage device 74 is increased.
In a further embodiment, the collapsible reservoir bag is a flexible reservoir bag that is secured to the inner wall of the evaporator chamber 50. The collapsible reservoir may be secured to the inner wall of the evaporator chamber 50 by adhesive or snap fit. The collapsible reservoir bag according to this embodiment is configured to: when the cold storage liquid is contained, at least part of the surface of one side of the evaporator 30 is attached to the surface of the evaporator 30 in a shape-copying manner, so that the cold storage liquid in the telescopic liquid storage bag can absorb cold from the evaporator 30; and upon evacuation of the cold storage liquid therein, the telescoping pouch collapses conformingly against at least a portion of the surface of the evaporator 30 to move away from the surface of the evaporator 30.
Fig. 5 and 6 show schematic views of the evaporator chamber with cold storage fluid in the first and second reservoirs, respectively, in one embodiment of the invention. Referring to fig. 5 and 6, 3 independent flexible storage bags are respectively arranged on the bottom wall of the evaporator chamber 50 and two opposite side walls of the evaporator chamber 50 adjacent to the inner wall of the fan 80, and at least partial surfaces of the three flexible storage bags facing the evaporator 30 when containing the cold storage liquid are respectively attached to the surface of the evaporator 30 in a contour manner; when the cold storage liquid therein is evacuated, the three flexible storage bags collapse away from the surface of evaporator 30 against portions of the surface thereof contoured to the surface of evaporator 30.
Fig. 7 shows a schematic view of the evaporator chamber with the cold storage liquid in the second liquid storage device in one embodiment of the invention. Referring to fig. 7, in this embodiment, each second reservoir 74 does not abut the evaporator 30 when the volume of cold storage fluid contained therein is expanded, but rather is spaced from the surface of the evaporator 30 to avoid the evaporator 30 scratching or even cutting the second reservoir 74.
In some embodiments, the circulation pump 72 may be disposed in the compressor compartment 60 or compressor chamber of the refrigerator. The circulation pump 72 may be further configured to: when the refrigerator is in the evaporator defrosting state, the cold accumulation liquid in each second liquid storage device 74 is pumped into the first liquid storage device 73, and when the refrigerator enters the refrigeration cycle state after the evaporator defrosting state is finished, the cold accumulation liquid in the first liquid storage device 73 is pumped into each second liquid storage device 74. In the present embodiment, during normal operation of the evaporator 30, the cold storage liquid is stored in each second liquid storage device 74 thermally connected to the evaporator 30 for cold storage; when the refrigerator is in the evaporator defrosting state, the cold accumulation liquid in each second liquid storage device 74 is pumped into the first liquid storage device 73, cold accumulation liquid is used for providing cold energy for the storage chamber, and the temperature of the storage chamber is prevented from greatly rising in the evaporator defrosting state, so that adverse effects on food stored in the storage chamber due to large temperature fluctuation in the storage chamber are avoided. After the refrigerator enters a refrigeration cycle state after defrosting of the evaporator is finished, the compressor works again to cool the storage chamber, and the working load of cooling of the compressor is relatively small due to the fact that the temperature rise range in the storage chamber is small or basically does not rise. Therefore, the refrigerator provided by the embodiment of the invention can effectively reduce the temperature fluctuation of the storage compartment while not occupying the effective volume of the refrigerator when the evaporator is defrosted, and can reduce the total energy consumption of the refrigerator caused by defrosting.
In some embodiments, pumping the cold thermal storage fluid from the first reservoir 73 into each of the second reservoirs 74 is performed after the evaporator defrost condition is over and when the compressor of the refrigerator is first shut down. In the embodiment of the present invention, after the refrigerator enters the refrigeration cycle state after the evaporator 30 is defrosted, the cold storage liquid in the first liquid storage device 73 is not pumped to each second liquid storage device 74 for the moment; but directly make the compressor work again and cool down the storing compartment. When the temperature in the storage compartment is reduced to the preset temperature, the cold accumulation liquid in the first liquid storage device 73 is also reduced to the same temperature, at this time, the compressor is stopped for the first time, and the circulating pump 72 pumps the cold accumulation liquid in the first liquid storage device 73 to each second liquid storage device 74. Because the temperature of the evaporator 30 is still very low after the compressor is shut down for the first time, the cold storage liquid is pumped back to the second liquid storage device 74, so that the cold energy can be fully transferred to the cold storage liquid by using the low temperature of the evaporator 30, the effect of energy recovery is achieved, and the energy consumption is reduced.
In other embodiments, pumping the cold thermal storage fluid from the first fluid reservoir 73 to each of the second fluid reservoirs 74 is performed after the evaporator defrost condition is over and the temperature of the evaporator first drops to a predetermined temperature. In these embodiments, after the refrigerator enters the refrigeration cycle state after the evaporator 30 is defrosted, the cold storage liquid in the first liquid storage device 73 is also temporarily not pumped to each second liquid storage device 74; but directly makes the compressor work again to cool the evaporator 30, and pumps the cold storage liquid in the first liquid storage device 73 to each second liquid storage device 74 when the temperature of the evaporator 30 is first lowered to the preset temperature. In some embodiments, the predetermined temperature may be from-15 ℃ to-20 ℃, such as-16 ℃, 18 ℃, 19 ℃. In a preferred embodiment, the preset temperature may be-18 ℃.
Particularly, the embodiment of the invention also provides a control method for the refrigerator in any one of the embodiments. The control method can control the refrigerator in any embodiment to utilize the cold storage liquid to provide cold energy for the storage chamber, so that the temperature of the storage chamber is prevented from greatly rising when the evaporator 30 is defrosted, and the adverse effect on food stored in the storage chamber due to large temperature fluctuation in the storage chamber is avoided.
The control method of the embodiment of the invention comprises the following steps: when the refrigerator is in the evaporator defrosting state, the cold accumulation liquid in each second liquid storage device 74 is pumped into the first liquid storage device 73, and when the refrigerator enters the refrigeration cycle state after the evaporator defrosting state is finished, the cold accumulation liquid in the first liquid storage device 73 is pumped into each second liquid storage device 74. In the present embodiment, during normal operation of the evaporator 30, the cold storage liquid is stored in each second liquid storage device 74 thermally connected to the evaporator 30 for cold storage; when the refrigerator is in the evaporator defrosting state, the cold accumulation liquid in each second liquid storage device 74 is pumped into the first liquid storage device 73, cold accumulation liquid is used for providing cold energy for the storage chamber, and the temperature of the storage chamber is prevented from greatly rising in the evaporator defrosting state, so that adverse effects on food stored in the storage chamber due to large temperature fluctuation in the storage chamber are avoided. After the refrigerator enters a refrigeration cycle state after defrosting of the evaporator is finished, the compressor works again to cool the storage chamber, and the working load of cooling of the compressor is relatively small due to the fact that the temperature rise range in the storage chamber is small or basically does not rise. Therefore, the refrigerator provided by the embodiment of the invention can effectively reduce the temperature fluctuation of the storage compartment while not occupying the effective volume of the refrigerator when the evaporator is defrosted, and can reduce the total energy consumption of the refrigerator caused by defrosting.
In some embodiments, pumping the cold thermal storage fluid from the first reservoir 73 into each of the second reservoirs 74 is performed after the evaporator defrost condition is over and when the compressor of the refrigerator is first shut down. In the embodiment of the present invention, after the refrigerator enters the refrigeration cycle state after the evaporator is defrosted, the cold storage liquid in the first liquid storage device 73 is not pumped to each second liquid storage device 74 for the moment; but directly make the compressor work again and cool down the storing compartment. When the temperature in the storage compartment is reduced to the preset temperature, the cold accumulation liquid in the first liquid storage device 73 is also reduced to the preset temperature, at this time, the compressor is stopped for the first time, and the circulating pump 72 pumps the cold accumulation liquid in the first liquid storage device 73 to each second liquid storage device 74. Because the temperature of the evaporator 30 is still very low after the compressor is shut down for the first time, the cold storage liquid is pumped back to the second liquid storage device 74, so that the cold energy can be fully transferred to the cold storage liquid by using the low temperature of the evaporator 30, the effect of energy recovery is achieved, and the energy consumption is reduced.
In other embodiments, pumping the cold thermal storage fluid from the first fluid reservoir 73 to each of the second fluid reservoirs 74 is performed after the evaporator defrost condition is over and the temperature of the evaporator first drops to a predetermined temperature. In these embodiments, after the refrigerator enters the refrigeration cycle state after the evaporator 30 is defrosted, the cold storage liquid in the first liquid storage device 73 is also temporarily not pumped to each second liquid storage device 74; but directly makes the compressor work again to cool the evaporator 30, and pumps the cold storage liquid in the first liquid storage device 73 to each second liquid storage device 74 when the temperature of the evaporator 30 is first lowered to the preset temperature. In some embodiments, the predetermined temperature may be from-15 ℃ to-20 ℃, such as-16 ℃, 18 ℃, 19 ℃. In a preferred embodiment, the preset temperature may be-18 ℃.
In the control method provided in this embodiment, by controlling the refrigerant to switch between the first liquid storage device 73 and the second liquid storage device 74 at different time intervals, the cold storage liquid can be used to provide cold energy to the storage chamber during defrosting of the evaporator of the refrigerator, so as to prevent the temperature of the storage chamber from greatly rising during defrosting of the evaporator, and avoid adverse effects on food stored in the storage chamber due to large temperature fluctuation in the storage chamber.
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 (14)
1. A refrigerator comprising an evaporator and at least one storage compartment, characterized in that it further comprises a cold storage system comprising:
the first liquid storage device is arranged in one storage room and is used for containing the cold storage liquid injected into the storage room in a controlled manner; the first liquid storage device is a telescopic liquid storage bag or box body with variable volume, and the telescopic liquid storage bag or box body extends when containing cold storage liquid and contracts when the cold storage liquid in the telescopic liquid storage bag or box body is pumped out;
at least one second liquid storage device which is thermally connected with the evaporator and is controllably communicated with the first liquid storage device through a pipeline, wherein each second liquid storage device is used for containing cold accumulation liquid which is injected into the second liquid storage device in a controlled manner; and
a circulating pump configured to controllably pump cold storage liquid in the first liquid storage device into each second liquid storage device and pump cold storage liquid in each second liquid storage device into the first liquid storage device;
the circulation pump is further configured to:
when the refrigerator is in an evaporator defrosting state, the cold accumulation liquid in each second liquid storage device is pumped into the first liquid storage device, and
and after the defrosting state of the evaporator is finished, the refrigerator enters a refrigeration cycle state, and the cold accumulation liquid in the first liquid storage device is pumped into each second liquid storage device.
2. The refrigerator according to claim 1,
the first liquid storage device is unfolded to be flat when containing cold storage liquid, and extends downwards adjacent to the rear wall of the storage compartment;
when the cold storage liquid is pumped out, the cold storage liquid is shrunk or telescoped at the corner part between the rear wall and the top wall of the storage chamber in a shrinking state with reduced volume.
3. The refrigerator according to claim 1,
the at least one second liquid storage device is arranged between the evaporator and the inner wall of an evaporator chamber for arranging the evaporator.
4. The refrigerator according to claim 3,
each said second reservoir is a telescopic reservoir, each said telescopic reservoir configured to:
when the liquid storage bag is filled with the cold storage liquid, the volume of the liquid storage bag is expanded, so that at least one part of the telescopic liquid storage bag is attached to the evaporator; and is
The telescopic liquid storage bag is contracted when the cold storage liquid in the telescopic liquid storage bag is pumped out, so that at least one part of the surface of the telescopic liquid storage bag facing to the evaporator is far away from the evaporator.
5. The refrigerator according to claim 4,
the telescopic liquid storage bag is a flexible liquid storage bag, is fixed on the indoor wall of the evaporator and is configured into:
when the flexible storage bag is filled with the cold storage liquid, at least part of the surface of one side of the evaporator is attached to the surface of the evaporator in a profiling mode, so that the cold storage liquid in the flexible storage bag can absorb cold from the evaporator; and is
The at least partial surface collapses away from the evaporator surface when the cold accumulation liquid therein is evacuated.
6. The refrigerator according to claim 1,
the cold accumulation system comprises a plurality of second liquid storage devices, and the second liquid storage devices are respectively arranged in different areas or parts of the evaporator to absorb cold from the evaporator.
7. The refrigerator according to claim 1,
the storage chamber provided with the first liquid storage device is a freezing chamber.
8. The refrigerator according to claim 1,
and pumping the cold accumulation liquid in the first liquid storage device into each second liquid storage device is carried out after the defrosting state of the evaporator is finished and when the compressor of the refrigerator is stopped for the first time.
9. The refrigerator according to claim 1,
and pumping the cold accumulation liquid in the first liquid storage device into each second liquid storage device is carried out after the defrosting state of the evaporator is finished and the temperature of the evaporator is firstly reduced to a preset temperature.
10. The refrigerator according to claim 9,
the preset temperature is 18 ℃ below zero.
11. A control method for the refrigerator of any one of claims 1 to 10, comprising:
when the refrigerator is in an evaporator defrosting state, the cold accumulation liquid in each second liquid storage device is pumped into the first liquid storage device, and
and after the defrosting state of the evaporator is finished, the refrigerator enters a refrigeration cycle state, and the cold accumulation liquid in the first liquid storage device is pumped into each second liquid storage device.
12. The control method according to claim 11,
and pumping the cold accumulation liquid in the first liquid storage device into each second liquid storage device is carried out after the defrosting state of the evaporator is finished and when the compressor of the refrigerator is stopped for the first time.
13. The control method according to claim 11,
and pumping the cold accumulation liquid in the first liquid storage device into each second liquid storage device is carried out after the defrosting state of the evaporator is finished and the temperature of the evaporator is firstly reduced to a preset temperature.
14. The control method according to claim 13,
the preset temperature is 18 ℃ below zero.
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| CN201510044244.4A CN105987560B (en) | 2015-01-28 | 2015-01-28 | Refrigerator and control method thereof |
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| CN201510044244.4A CN105987560B (en) | 2015-01-28 | 2015-01-28 | Refrigerator and control method thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987558B (en) * | 2015-01-30 | 2019-12-10 | 青岛海尔智能技术研发有限公司 | Refrigerator and quick freezing method for refrigerator |
| CN113310264B (en) * | 2020-02-26 | 2022-09-27 | 合肥华凌股份有限公司 | Quick cooling device and refrigerator |
| CN113310259B (en) * | 2020-02-26 | 2022-12-27 | 合肥华凌股份有限公司 | Quick cooling device, refrigeration equipment and control method and control device thereof |
| CN113310277B (en) * | 2020-02-26 | 2022-09-30 | 合肥华凌股份有限公司 | Quick cooling device, refrigeration equipment and control method and control device thereof |
| CN113310263B (en) * | 2020-02-26 | 2022-09-30 | 合肥华凌股份有限公司 | Quick cooling device, refrigeration equipment and control method and control device thereof |
| CN113310262B (en) * | 2020-02-26 | 2022-09-27 | 合肥华凌股份有限公司 | Quick cooling device and refrigerator |
| CN113310268B (en) * | 2020-02-26 | 2022-09-30 | 合肥华凌股份有限公司 | Refrigerator with a door |
| CN113989984A (en) * | 2021-12-02 | 2022-01-28 | 四川虹美智能科技有限公司 | Intelligent beer cabinet |
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| DE102012207680A1 (en) * | 2012-05-09 | 2013-11-14 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic refrigerating appliance for use with adjustable freezer operating mode, has coolable inner space for storing refrigerated product, where adjustable freezer operating mode is formed, in which cold storage is selectively freezed |
| CN104296569A (en) * | 2014-09-30 | 2015-01-21 | 叶立英 | Heat energy transmitting method and system |
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| CN1314572A (en) * | 2000-03-20 | 2001-09-26 | 徐宝安 | Variable volume ice storage air conditioner and refrigerator |
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Effective date of registration: 20201109 Address after: 266101 No. 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee after: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 No. 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. |