CN113739485A - Refrigerator with a door - Google Patents
Refrigerator with a door Download PDFInfo
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- CN113739485A CN113739485A CN202010477227.0A CN202010477227A CN113739485A CN 113739485 A CN113739485 A CN 113739485A CN 202010477227 A CN202010477227 A CN 202010477227A CN 113739485 A CN113739485 A CN 113739485A
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- evaporator
- air supply
- air
- cooling cavity
- temperature
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- 238000001816 cooling Methods 0.000 claims abstract description 142
- 238000005057 refrigeration Methods 0.000 claims description 78
- 238000001704 evaporation Methods 0.000 claims description 28
- 230000008020 evaporation Effects 0.000 claims description 26
- 230000005494 condensation Effects 0.000 claims description 16
- 238000009833 condensation Methods 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 7
- 239000003507 refrigerant Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 230000008676 import Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005476 soldering Methods 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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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
- F25D11/025—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures using primary and secondary refrigeration systems
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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
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
Abstract
The invention provides a refrigerator, which comprises a refrigerator body, an air supply device, a first evaporator and a second evaporator, wherein a first storage chamber is formed in the refrigerator body; the air supply device is arranged in the box body and comprises a fan, an air supply structure, an air door device, a first cooling cavity and a second cooling cavity; the first evaporator is arranged in the first cooling cavity, and the second evaporator is arranged in the second cooling cavity; and the air door device is configured to controllably conduct the first cooling cavity and the air supply structure and/or controllably conduct the second cooling cavity and the air supply structure, so that the fan enables the airflow in the first storage compartment to enter the first cooling cavity or the second cooling cavity, and the airflow exchanges heat with the first evaporator or the second evaporator and then circularly flows back to the first storage compartment through the air supply structure. Through first cooling chamber and second cooling chamber, set up first evaporimeter and second evaporimeter in two cooling chambeies, can avoid or reduce the mutual influence between first evaporimeter and the second evaporimeter.
Description
Technical Field
The invention relates to the field of refrigeration, in particular to a refrigerator.
Background
At present, the temperature range of the temperature-changing chamber of the refrigerator on the market is mostly adjusted between 8 ℃ and 18 ℃, and the overall design is more conventional. With the gradual improvement of living standard of people, the refrigerator with the temperature zone can not well meet the requirements of people, a high-end refrigerator which has a wider temperature range and more complete functions and can meet more requirements of users needs to be designed, the food is stored at a glass state below-40 ℃, the food nutritive value can be stored to the maximum extent, the market of the high-end user has the requirement on an ultralow temperature compartment (minus 40 ℃ to minus 60 ℃), and the user experience is grasped tightly for improving the satisfaction degree of the user. For this reason, the conventional cascade compression refrigeration system is generally composed of two separate refrigeration cycles, which are called a high-temperature stage refrigeration cycle (referred to as a high-temperature portion) and a low-temperature stage refrigeration cycle (referred to as a low-temperature portion), respectively. The high temperature portion uses a first refrigerant having a relatively high evaporation temperature, and the low temperature portion uses a second refrigerant having a relatively low evaporation temperature. And a condensing evaporator is adopted, which utilizes the cold energy produced by the first refrigerant in the high-temperature part to condense the second refrigerant vapor discharged by the compressor in the low-temperature part, thereby realizing the low temperature below minus 60 ℃. However, in the partial overlapping type compression refrigeration system in the prior art, the high-temperature stage refrigeration cycle loop is only used for supplying cold to the condenser of the low-temperature stage refrigeration cycle loop, so that the refrigeration efficiency of the overlapping type compression refrigeration system is low, and the conventional deep cooling refrigerator only has a single temperature function, so that the system efficiency is low.
Disclosure of Invention
In order to overcome at least one technical defect of the existing cryogenic refrigerator, the inventor of the invention provides that the first evaporator of the high-temperature system and the second evaporator of the low-temperature part are used for supplying cold to the storage chamber, so that the multi-temperature-region chamber can reach extremely low temperature, and meanwhile, the conventional temperature region can be set when the ultra-low temperature is not needed, thereby meeting the diversified requirements of users. However, the inventor has found that the first evaporator and the second evaporator which are integrally provided have a certain degree of mutual influence between the two evaporators in cooling, and based on this, the invention provides a novel refrigerator.
The invention provides a refrigerator which comprises a refrigerator body, an air supply device, a first evaporator and a second evaporator, wherein a first storage chamber is formed in the refrigerator body;
the air supply device is arranged in the box body and comprises a fan, an air supply structure, an air door device, a first cooling cavity and a second cooling cavity; the first evaporator is arranged in the first cooling cavity, and the second evaporator is arranged in the second cooling cavity; and is
The air door device is configured to controllably conduct the first cooling cavity and the air supply structure, and/or controllably conduct the second cooling cavity and the air supply structure, so that the fan enables the air flow of the first storage compartment to enter the first cooling cavity or the second cooling cavity, and the air flow circularly flows back to the first storage compartment through the air supply structure after exchanging heat with the first evaporator or the second evaporator.
Optionally, the air supply device further comprises a partition plate and a frame arranged at one end of the partition plate;
the first cooling cavity and the second cooling cavity are arranged on two sides of the partition plate;
the frame is provided with a first air outlet communicated with the first cooling cavity and a second air outlet communicated with the second cooling cavity;
the damper device is mounted to the frame and configured to turn on the first cooling chamber and the air supply structure when the second cooling chamber and the air supply structure are turned off, and to turn on the second cooling chamber and the air supply structure when the first cooling chamber and the air supply structure are turned off.
Optionally, the damper device is a controllable damper and is rotatably mounted on the frame, and a rotating shaft of the controllable damper is located between the first air outlet and the second air outlet.
Optionally, the damper device is a controllable damper and is slidably mounted to the frame in a direction perpendicular to the partition.
Optionally, a cooling chamber is formed inside the box body, and the partition plate is mounted to the cooling chamber to divide the cooling chamber into the first cooling chamber and the second cooling chamber;
the fan is arranged in the cooling chamber and is positioned at the downstream side of the first evaporator and the second evaporator; or the fan is arranged in the air supply structure.
Optionally, air supply arrangement still includes the return air structure, the access connection of return air structure in room between first storing, the export of return air structure with first cooling chamber with the second cooling chamber all communicates.
Optionally, the cooling chamber is disposed behind the storage compartment, the air supply structure separates the cooling chamber from the first storage compartment, and the second cooling cavity is located behind the first cooling cavity;
the air supply structure is characterized in that an air inlet is formed in the rear surface of the air supply structure, at least one air supply outlet is formed in the front surface of the air supply structure, a communication air channel is formed in the air supply structure, and the communication air channel is communicated with the air inlet and each air supply outlet.
Optionally, the refrigerator further comprises a high-temperature stage refrigeration cycle loop and a low-temperature stage refrigeration cycle loop;
the high-temperature-stage refrigeration cycle circuit comprises an evaporation part and the first evaporator; the low-temperature-stage refrigeration cycle loop comprises a condensation part and the second evaporator, and the condensation part is thermally connected with the evaporation part;
the air door device is configured to be communicated with the first cooling cavity and the air supply structure before the low-temperature-level refrigeration cycle circuit is opened, and is switched off to the second cooling cavity and the air supply structure so as to pre-cool the first storage compartment, and the second cooling cavity and the air supply structure are communicated when the low-temperature-level refrigeration cycle circuit is opened.
Optionally, a second storage compartment is further formed inside the box body, and the high-temperature refrigeration cycle loop further includes a third evaporator, where the third evaporator is used for cooling the second storage compartment;
the third evaporator with the evaporation plant sets up in series, just high temperature level refrigeration cycle return circuit still includes the control valve, the import of first evaporator with an export intercommunication of control valve, the import of third evaporator with another export intercommunication of control valve, the export of first evaporator with the import intercommunication of third evaporator, the export of third evaporator with the import intercommunication of evaporation plant.
Optionally, a third storage compartment and a third cooling cavity are formed inside the box body; the high-temperature stage refrigeration cycle loop further comprises a fourth evaporator, the fourth evaporator is used for supplying cold to the third storage compartment, an inlet of the fourth evaporator is communicated with the other outlet of the control valve, and an outlet of the fourth evaporator is communicated with an inlet of the third evaporator;
the evaporation part and the condensation part are plate heat exchangers, and the plate heat exchangers and the third evaporator are arranged in the third cooling cavity.
Optionally, the low temperature stage refrigeration cycle loop further comprises a low temperature stage compressor and an expansion device, the expansion device comprising a pressure reducing valve and an expansion vessel; the inlet of the pressure reducing valve is arranged on a pipeline between the outlet of the second evaporator and the suction inlet of the low-temperature stage compressor, the inlet of the expansion container is communicated with the outlet of the pressure reducing valve, and the outlet of the expansion container is arranged on a pipeline between the discharge port of the low-temperature stage compressor and the inlet of the condensing part.
According to the refrigerator, the first evaporator and the second evaporator are arranged in the two cooling cavities through the fan, the air supply structure, the air door device, the first cooling cavity and the second cooling cavity, so that the mutual influence between the first evaporator and the second evaporator can be avoided or reduced, return air is prevented from entering the fan from the second evaporator to circulate without being cooled when the first evaporator is refrigerated, and the return air temperature is too high. Specifically, when the ultralow temperature function is used, the load is large, the cold quantity demand is high, a relatively large second evaporator is adopted, and meanwhile, cold air enters the second evaporator for circulation when normal temperature change refrigeration is reduced, so that cold quantity loss is caused, and the controllable air door is arranged to reduce air leakage. The arrangement of the fan and the air supply structure can enable the refrigerator to be compact in structure, make full use of all parts and increase the volume of the storage chamber to a certain extent.
Further, a first evaporator is arranged in the high-temperature refrigeration circulating loop and used for supplying cold to the first storage compartment. And a second evaporator is arranged in the low-temperature refrigeration circulation loop and used for supplying cold to the first storage compartment. The first evaporator and the second evaporator can both supply cold to the first storage chamber, so that a single storage chamber of the refrigerator has a multi-temperature-zone function, even if the first storage chamber can obtain different refrigeration effects, different refrigeration requirements and storage requirements are met, the temperature zone range of the first storage chamber can be enlarged, namely, the refrigerator can have a deep cooling function and meet the energy-saving requirement of daily refrigeration.
Furthermore, the tail end of the third evaporator is provided with an evaporation part, namely, the tail end of the freezing evaporator is provided with a plate heat exchanger, so that the cold energy of the refrigerant can be fully utilized without adding a liquid storage bag, and the heat of the low-temperature chamber is transferred to the freezing chamber through the plate heat exchanger.
Furthermore, the arrangement positions of each evaporator and the evaporation part in the high-temperature refrigeration circulation loop can ensure the refrigeration efficiency of each evaporator during normal refrigeration, improve the energy efficiency of the refrigerator and have obvious energy-saving effect. That is to say, the refrigerator can ensure that the temperature of each room is controlled when the high-temperature refrigeration circulation loop operates independently, the aim of saving energy is achieved, and the deep cooling function of the refrigerator can be realized by utilizing the low-temperature refrigeration circulation loop.
Further, an expansion container is arranged at the low-temperature stage compressor, so that the low-temperature stage compressor is prevented from being damaged due to overlarge pressure difference when the low-temperature stage compressor is started, and meanwhile, a pressure retaining valve is arranged for maintaining the pressure difference for ensuring the pressure difference when the compressor is stopped. And when the freezing defrosting is set, the low-temperature stage compressor stops running, and the low-temperature stage compressor is started again when the temperature of the third evaporator reaches the starting temperature.
Further, when the first storage chamber is set to be at an ultralow temperature, the multi-temperature chamber is precooled to-18 ℃ through the high-temperature refrigeration circulation loop for reducing energy consumption, and then the low-temperature refrigeration circulation loop is opened to independently refrigerate the multi-temperature chamber.
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 front view of a refrigerator according to one embodiment of the present invention;
FIG. 2 is a schematic side view of a refrigerator according to one embodiment of the present invention;
FIG. 3 is a schematic partial structural view of the refrigerator shown in FIG. 2;
FIG. 4 is a schematic diagram of a refrigeration system in a refrigerator according to one embodiment of the present invention;
fig. 5 is a schematic side view of a refrigerator according to another embodiment of the present invention;
fig. 6 is a schematic partial structural view of the refrigerator shown in fig. 5.
Detailed Description
Fig. 1 is a schematic front view of a refrigerator according to one embodiment of the present invention. As shown in fig. 1, and referring to fig. 2 and 3, an embodiment of the present invention provides a refrigerator, which may include a cabinet 20, a refrigeration system, and an air supply device. One or more storage compartments are formed in the box body 20, and the storage compartment may include one storage compartment, such as the first storage compartment 21. Alternatively, the storage compartment may comprise a plurality of storage compartments, such as a first storage compartment 21, a second storage compartment 22 and a third storage compartment 23. A refrigeration system may be provided within the cabinet 20, and the refrigeration system may include a first evaporator 35 and a second evaporator 44 for absorbing heat. The air supply device is arranged in the box body 20 and comprises a fan 53, an air supply structure 55, a damper device 54, a first cooling cavity and a second cooling cavity. The first evaporator 35 is disposed in the first cooling chamber, and the second evaporator 44 is disposed in the second cooling chamber.
The damper device 54 is configured to controllably communicate the first cooling chamber with the air supply structure 55, and/or controllably communicate the second cooling chamber with the air supply structure 55, so that the fan 53 promotes the air flow in the first storage compartment 21 to enter the first cooling chamber or the second cooling chamber, and circulates back to the first storage compartment 21 through the air supply structure 55 after exchanging heat with the first evaporator 35 or the second evaporator 44. That is, the damper device 54 can open the first cooling chamber and the air supply structure 55, so that the fan 53 can promote the airflow of the first storage compartment 21 to enter the first cooling chamber, exchange heat with the first evaporator 35 and circulate back to the first storage compartment 21 through the air supply structure 55, and at this time, the damper device 54 can preferably close the second cooling chamber and the air supply structure 55. The damper device 54 can conduct the second cooling chamber and the air supply structure 55, so that the fan 53 can promote the airflow of the first storage compartment 21 to enter the second cooling chamber, and the airflow can circulate back to the first storage compartment 21 through the air supply structure 55 after exchanging heat with the second evaporator 44, and at this time, the damper device 54 can preferably shut off the first cooling chamber and the air supply structure 55. Alternatively, the damper device 54 may simultaneously open the first cooling chamber and the air supply structure 55 and open the second cooling chamber and the air supply structure 55 to meet the multi-scenario air supply requirement.
According to the refrigerator provided by the embodiment of the invention, the first evaporator 35 and the second evaporator 44 are arranged in the two cooling cavities through the fan 53, the air supply structure 55, the air door device 54 and the first cooling cavity and the second cooling cavity, so that the mutual influence between the first evaporator 35 and the second evaporator 44 can be avoided or reduced, and the condition that return air is not cooled when the first evaporator 35 is refrigerated and enters the fan 53 from the second evaporator 44 for circulation to cause the over-high temperature of the return air can be prevented. Specifically, when the ultralow temperature function is used, the load is large, the cold quantity demand is high, a relatively large second evaporator 44 is adopted, and meanwhile, cold air enters the second evaporator 44 for circulation when normal temperature change refrigeration is reduced, so that cold quantity loss is caused, and a controllable air door is arranged to reduce air leakage. The arrangement of the fan 53 and the air supply structure 55 can make the refrigerator compact in structure, make full use of all parts and increase the volume of the storage chamber to a certain extent. Further, air supply arrangement still includes return air structure 56, and the import of return air structure 56 is connected in first storing compartment 21, and the export of return air structure 56 all communicates with first cooling chamber and second cooling chamber. The refrigerator has compact structure and makes full use of all the parts.
In some embodiments of the present invention, the damper device 54 is configured to turn on the first cooling chamber and the air delivery structure when the second cooling chamber and the air delivery structure are turned off, and to turn on the second cooling chamber and the air delivery structure when the first cooling chamber and the air delivery structure are turned off. The damper device 54 may include two controllable dampers. In some preferred embodiments, the damper device 54 comprises a controllable damper, i.e., one damper is used to control the opening and closing of two air ducts, which is convenient for control.
In some embodiments of the present invention, the air supply device further includes a partition 57 and a frame 58 provided at one end of the partition 57. The partition plate 57 is flanked by a first cooling chamber and a second cooling chamber. Frame 58 has a first outlet 582 in communication with the first cooling chamber and a second outlet 583 in communication with the second cooling chamber. The damper device 54 is mounted to the frame 58 to open or close the first outlet 582 and the second outlet 583. The structural layout is more reasonable, and the installation is convenient.
Further, a cooling chamber is formed inside the case 20, and a partition plate 57 is installed to the cooling chamber to divide the cooling chamber into a first cooling chamber and a second cooling chamber. The fan 53 is provided in the cooling chamber at the downstream side of the first evaporator 35 and the second evaporator 55; or the fan 53 is provided in the air blowing structure 55.
For example, the cooling chamber is disposed behind the first storage compartment 21, and the air blowing structure 55 partitions the cooling chamber from the first storage compartment 21. The second cooling cavity is located behind the first cooling cavity. The air return structure 56 is arranged below the air supply structure 55 and is communicated with the lower end of the first cooling cavity and the lower end of the second cooling cavity. Air supply structure 55 includes air intake, at least one supply-air outlet and intercommunication wind channel, and the air intake all communicates with first cooling chamber and second cooling chamber, for example communicates with the upper portion of cooling chamber, and intercommunication wind channel communicates air intake and every supply-air outlet, and every supply-air outlet is towards first storing compartment 21. The fan 53 is disposed at the air inlet and on the upper side of the first cooling chamber. The structural layout is more reasonable, and the installation, air supply, air return and the like are convenient.
In some embodiments of the present invention, as shown in fig. 1-3, the damper device 54 is a controllable damper and is rotatably mounted to the frame 58 with the axis of rotation of the controllable damper between the first outlet 582 and the second outlet 583. In other embodiments of the invention, as shown in fig. 5 and 6, the damper device 54 is a controllable damper and is slidably mounted to the frame 58 in a direction perpendicular to the partition 57. For example, a slide 581 is provided in the frame 58, and a controllable damper is mounted to the slide 581. The first air outlet 582 and the second air outlet 583 can be effectively opened and closed by rotating or sliding, and the operation is convenient.
In some embodiments of the present invention, as shown in fig. 1-4, the refrigeration system includes a high temperature stage refrigeration cycle loop 30 and a low temperature stage refrigeration cycle loop 40, which may also be referred to as a cascade compression refrigeration system. The "high temperature" and the "low temperature" in the "high temperature stage refrigeration cycle circuit 30" and the "low temperature stage refrigeration cycle circuit 40" are relative, and the evaporation temperature of the refrigerant flowing through the high temperature stage refrigeration cycle circuit 30 is relatively higher than the evaporation temperature of the refrigerant flowing through the low temperature stage refrigeration cycle circuit 40.
The high-temperature-stage refrigeration cycle circuit 30 is configured to circulate a first refrigerant, and the first evaporator 35 and the evaporation unit for absorbing heat are provided therein. The first evaporator 35 and the evaporation portion serve to cause the first refrigerant flowing therethrough to absorb heat. The high temperature stage refrigeration cycle circuit 30 also includes a high temperature stage compressor 31 and a high temperature stage condensing device. The low-temperature-stage refrigeration cycle circuit 40 is for circulating the second refrigerant, and is provided therein with a condensing portion and the above-described second evaporator 44. The second evaporator 44 is used for promoting the second refrigerant flowing through the second evaporator to absorb heat and supplying cold to the first storage compartment 21. The low-temperature stage refrigeration cycle circuit 40 also includes a low-temperature stage compressor 41. The evaporation portion serves to cause the first refrigerant flowing therethrough to absorb heat of the second refrigerant flowing through the condensation portion within the low-temperature-stage refrigeration cycle circuit 40. The first refrigerant and the second refrigerant may be the same refrigerant, such as R600a, or different refrigerants.
In the refrigerator according to the embodiment of the present invention, the first evaporator 35 can supply cold to the first storage compartment 21, and the second evaporator 44 can also supply cold to the first storage compartment 21, so that a single storage compartment of the refrigerator has a multi-temperature-zone function, even if the first storage compartment 21 can obtain different refrigeration effects, different refrigeration requirements can be met, and the temperature zone range of the first storage compartment 21 can be expanded, that is, the refrigerator can have a deep cooling function and can meet the energy saving requirement of daily refrigeration. By arranging the first evaporator 35 and the second evaporator 44 in two cooling chambers, the mutual influence between the first evaporator 35 and the second evaporator 44 can be avoided or reduced.
The high-temperature-stage refrigeration cycle further comprises a third evaporator 36 and a fourth evaporator 37, wherein the third evaporator 36 is used for cooling the second storage compartment 22, and the fourth evaporator 37 is used for cooling the third storage compartment 23. In some embodiments of the present invention, the second storage compartment 22 and the first storage compartment 21 are disposed in parallel in a lateral extension direction of the refrigerator, and the third storage compartment 23 is disposed at an upper side of the second storage compartment 22 and the first storage compartment 21. In some embodiments of the present invention, the second storage compartment 22, the first storage compartment 21 and the third storage compartment 23 may be arranged in sequence from bottom to top. The second storage compartment 22 may be a freezing compartment, the first storage compartment 21 may be a multifunctional compartment having multiple temperature zones, and the third storage compartment 23 may be a refrigerating compartment. The arrangement can ensure that the compartment layout is more reasonable and the corresponding articles can be more conveniently stored and taken. In some alternative embodiments of the present invention, the high temperature stage refrigeration cycle does not have the fourth evaporator 37, and the third evaporator 36 can supply cold to the second storage compartment 22 and the third storage compartment 23 through the air duct.
In some embodiments of the present invention, the high temperature stage refrigeration cycle loop 30 further includes a control valve 33. The inlet of the control valve 33 may be in communication with the inlet of the high temperature stage condensing unit. The control valve 33 has a first outlet and a second outlet, with the inlet of the first evaporator 35 communicating with the first outlet. The inlet of the third evaporator 36 communicates with the second outlet. The outlet of the first evaporator 35 communicates with the inlet of the third evaporator 36, and the outlet of the third evaporator 36 communicates with the inlet of the evaporation portion. The control valve 33 may be a switching valve. Further, the control valve 33 also has a third outlet, and an inlet of the fourth evaporator 37 communicates with the third outlet, and an outlet of the fourth evaporator 37 communicates with an inlet of the third evaporator 36. The arrangement positions of each evaporator and the evaporation part in the high-temperature refrigeration circulation loop can ensure the refrigeration efficiency of each evaporator during conventional refrigeration, improve the energy efficiency of the refrigerator and have obvious energy-saving effect. That is, the refrigerator can ensure temperature control of each compartment when the high-temperature refrigeration cycle circuit 30 operates alone, achieve the purpose of energy saving, and can realize the deep cooling function of the refrigerator by using the low-temperature refrigeration cycle circuit 40.
In some embodiments of the present invention, a first throttling device 343 is disposed between the inlet and the first outlet of the first evaporator 35. A second throttle device 342 is provided between the inlet and the second outlet of the third evaporator 36. A third throttling means 341 is provided between the inlet and the third outlet of the fourth evaporator 37. In alternative embodiments, a total restriction may be provided at the inlet of the control valve 33. Further, the first throttling means 343, the second throttling means 342 and the third throttling means 341 may each be a capillary tube. Alternatively, the first throttling device 343, the second throttling device 342 and the third throttling device 341 may be electromagnetic expansion valves. The control valve 33 may now be selected as a one-in-many flow divider valve.
In some embodiments of the present invention, the high temperature stage condensing device may include a condenser 321 and a dew condensation preventing pipe 322. The inlet of the high-temperature stage condensing device is communicated with the outlet of the high-temperature stage compressor 31, and the outlet of the evaporation part is communicated with the inlet of the high-temperature stage compressor 31. The low temperature stage refrigeration cycle circuit 40 further includes a low temperature stage throttling device 43. The outlet of the low-temperature stage compressor 41 is communicated with the inlet of the condensing part, the outlet of the condensing part is communicated with the low-temperature stage throttling device 43, the outlet of the low-temperature stage throttling device 43 is communicated with the inlet of the second evaporator 44, and the outlet of the second evaporator 44 is communicated with the inlet of the low-temperature stage compressor 41. Optionally, the low-temperature stage refrigeration cycle 40 further includes a low-temperature stage condensation device, an outlet of the low-temperature stage compressor 41 is communicated with an inlet of the low-temperature stage condensation device, and an outlet of the low-temperature stage condensation device is communicated with an inlet of the condensation portion.
In some embodiments of the present invention, the cabinet 20 is further formed with a third cooling chamber for arranging a third evaporator 36 at a position corresponding to the rear side of the second storage compartment 22. The condensing portion and the evaporating portion may form a condensing evaporator. The condensing evaporator may be a double pipe heat exchanger. Alternatively, the condensation section and the evaporation section may be two copper tubes attached to each other. The two copper pipes are arranged in a mutual attaching mode. The contact part between the two copper pipes can be fixed by tin soldering to strengthen the heat transfer. The two copper pipes can be wrapped with aluminum foils. In other alternative embodiments, the condensing portion and the evaporating portion may share heat exchange fins. In some preferred embodiments, the evaporation section and the condensation section are plate heat exchangers 60. The evaporation part and the condensation part are arranged in the third cooling cavity. Of course, the evaporation portion and the condensation portion may be provided at other positions of the refrigerator.
In some embodiments of the present invention, the damper device 54 is configured to open the first cooling chamber and the air supply structure 55 and close the second cooling chamber and the air supply structure 55 before the low-temperature-stage refrigeration cycle 30 is opened to pre-cool the first storage compartment 21 and open the second cooling chamber and the air supply structure 55 when the low-temperature-stage refrigeration cycle 30 is opened. That is, when the first storage chamber is set at an ultra-low temperature, the multi-temperature chamber is pre-cooled to-18 ℃ by the high-temperature refrigeration cycle circuit to reduce energy consumption, and then the low-temperature refrigeration cycle circuit is opened to independently refrigerate the multi-temperature chamber. The energy utilization rate is improved, and the energy-saving effect is obvious. The first cooling chamber and air delivery structure 55 may be turned off simultaneously when the second cooling chamber and air delivery structure 55 is turned on.
In some embodiments of the invention, the low temperature stage refrigeration cycle loop further comprises an expansion device comprising a pressure reducing valve and an expansion vessel. An inlet of the pressure reducing valve is provided in a pipeline between an outlet of the second evaporator 44 and a suction port of the low-temperature stage compressor 41, an inlet of the expansion vessel is communicated with an outlet of the pressure reducing valve, and an outlet of the expansion vessel is provided in a pipeline between a discharge port of the low-temperature stage compressor 41 and an inlet of the condensing portion. An expansion container is arranged at the low-temperature stage compressor 41, so that the low-temperature stage compressor 41 is prevented from being damaged due to overlarge pressure difference when the low-temperature stage compressor 41 is started, and meanwhile, a pressure retaining valve is arranged for maintaining the pressure difference to ensure the pressure difference when the compressor is stopped. When the defrosting of the refrigerant is set, the low-temperature stage compressor 41 is stopped, and the low-temperature stage compressor 41 is restarted when the temperature of the third evaporator 36 reaches the start-up temperature. The rear side of the bottom of the box 20 is provided with a compressor bin 24, and the high-temperature stage compressor 31, part or all of the high-temperature stage condensing device (such as the condenser 321) and the low-temperature stage compressor 41 are all arranged in the compressor bin.
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 refrigerator comprises a refrigerator body, wherein a first storage chamber is formed in the refrigerator body, and the refrigerator is characterized by further comprising an air supply device, a first evaporator and a second evaporator;
the air supply device is arranged in the box body and comprises a fan, an air supply structure, an air door device, a first cooling cavity and a second cooling cavity; the first evaporator is arranged in the first cooling cavity, and the second evaporator is arranged in the second cooling cavity; and is
The air door device is configured to controllably conduct the first cooling cavity and the air supply structure, and/or controllably conduct the second cooling cavity and the air supply structure, so that the fan enables the air flow of the first storage compartment to enter the first cooling cavity or the second cooling cavity, and the air flow circularly flows back to the first storage compartment through the air supply structure after exchanging heat with the first evaporator or the second evaporator.
2. The refrigerator according to claim 1,
the air supply device also comprises a partition plate and a frame arranged at one end of the partition plate;
the first cooling cavity and the second cooling cavity are arranged on two sides of the partition plate;
the frame is provided with a first air outlet communicated with the first cooling cavity and a second air outlet communicated with the second cooling cavity;
the damper device is mounted to the frame and configured to turn on the first cooling chamber and the air supply structure when the second cooling chamber and the air supply structure are turned off, and to turn on the second cooling chamber and the air supply structure when the first cooling chamber and the air supply structure are turned off.
3. The refrigerator according to claim 2,
the air door device is a controllable air door and is rotatably arranged on the frame, and a rotating shaft of the controllable air door is positioned between the first air outlet and the second air outlet.
4. The refrigerator according to claim 2,
the air door device is a controllable air door and can be installed on the frame in a sliding mode along the direction perpendicular to the partition plate.
5. The refrigerator according to claim 2,
a cooling chamber is formed in the box body, and the partition plate is installed in the cooling chamber to divide the cooling chamber into the first cooling cavity and the second cooling cavity;
the fan is arranged in the cooling chamber and is positioned at the downstream side of the first evaporator and the second evaporator; or the fan is arranged in the air supply structure.
6. The refrigerator according to claim 1,
air supply arrangement still includes the return air structure, the access connection of return air structure in room between first storing, the export of return air structure with first cooling chamber with the second cooling chamber all communicates.
7. The refrigerator according to claim 5,
the cooling chamber is arranged behind the first storage chamber, the air supply structure separates the cooling chamber from the first storage chamber, and the second cooling cavity is arranged behind the first cooling cavity;
the air supply structure is characterized in that an air inlet is formed in the rear surface of the air supply structure, at least one air supply outlet is formed in the front surface of the air supply structure, a communication air channel is formed in the air supply structure, and the communication air channel is communicated with the air inlet and each air supply outlet.
8. The refrigerator of claim 1, further comprising a high temperature stage refrigeration cycle circuit and a low temperature stage refrigeration cycle circuit;
the high-temperature-stage refrigeration cycle circuit comprises an evaporation part and the first evaporator; the low-temperature-stage refrigeration cycle loop comprises a condensation part and the second evaporator, and the condensation part is thermally connected with the evaporation part;
the air door device is configured to be communicated with the first cooling cavity and the air supply structure before the low-temperature-level refrigeration cycle circuit is opened, and is switched off to the second cooling cavity and the air supply structure so as to pre-cool the first storage compartment, and the second cooling cavity and the air supply structure are communicated when the low-temperature-level refrigeration cycle circuit is opened.
9. The refrigerator according to claim 8,
a second storage compartment and a third cooling cavity are formed in the box body, and the high-temperature refrigeration cycle loop further comprises a third evaporator which is used for supplying cold to the second storage compartment;
the third evaporator is connected with the evaporation part in series, the high-temperature stage refrigeration cycle loop further comprises a control valve, an inlet of the first evaporator is communicated with one outlet of the control valve, an inlet of the third evaporator is communicated with the other outlet of the control valve, an outlet of the first evaporator is communicated with an inlet of the third evaporator, and an outlet of the third evaporator is communicated with an inlet of the evaporation part;
the evaporation part and the condensation part are plate heat exchangers, and the plate heat exchangers and the third evaporator are arranged in the third cooling cavity.
10. The refrigerator according to claim 7,
the low-temperature stage refrigeration cycle loop further comprises a low-temperature stage compressor and an expansion device, wherein the expansion device comprises a pressure reducing valve and an expansion container; the inlet of the pressure reducing valve is arranged on a pipeline between the outlet of the second evaporator and the suction inlet of the low-temperature stage compressor, the inlet of the expansion container is communicated with the outlet of the pressure reducing valve, and the outlet of the expansion container is arranged on a pipeline between the discharge port of the low-temperature stage compressor and the inlet of the condensing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010477227.0A CN113739485A (en) | 2020-05-29 | 2020-05-29 | Refrigerator with a door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010477227.0A CN113739485A (en) | 2020-05-29 | 2020-05-29 | Refrigerator with a door |
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| CN113739485A true CN113739485A (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010477227.0A Pending CN113739485A (en) | 2020-05-29 | 2020-05-29 | Refrigerator with a door |
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| CN (1) | CN113739485A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01219472A (en) * | 1988-02-26 | 1989-09-01 | Matsushita Refrig Co Ltd | Refrigerator |
| EP1072850A2 (en) * | 1999-07-30 | 2001-01-31 | BKT Bonnet Kältetechnik GmbH | Refrigeration plant |
| JP2005273994A (en) * | 2004-03-24 | 2005-10-06 | Okamura Corp | Open showcase |
| JP2005271906A (en) * | 2004-02-27 | 2005-10-06 | Denso Corp | Air conditioner for vehicle |
| US20110011109A1 (en) * | 2009-07-16 | 2011-01-20 | Alexander Rafalovich | Dual evaporator defrost system for an appliance |
| CN202420018U (en) * | 2012-01-13 | 2012-09-05 | 重庆市威尔试验仪器有限公司 | Energy-saving mixed cascade refrigeration system |
| CN103499156A (en) * | 2013-09-24 | 2014-01-08 | 广州赛宝仪器设备有限公司 | High-and-low-temperature environmental testing refrigerating system, high-and-low-temperature environmental testing box and control method |
| JP2014052100A (en) * | 2012-09-05 | 2014-03-20 | Sharp Corp | Refrigerator |
| WO2014173098A1 (en) * | 2013-04-27 | 2014-10-30 | 海尔集团公司 | Refrigerator and temperature control method thereof |
| CN106403341A (en) * | 2016-09-05 | 2017-02-15 | 珠海格力电器股份有限公司 | Multi-temperature-zone cascade refrigeration system and low-temperature refrigerated storage box |
| CN207095133U (en) * | 2017-06-29 | 2018-03-13 | 青岛海尔特种电冰箱有限公司 | Side by side combination refrigerator |
| CN109612186A (en) * | 2018-12-05 | 2019-04-12 | 青岛海尔股份有限公司 | Wind cooling refrigerator |
| CN109764601A (en) * | 2018-12-18 | 2019-05-17 | 合肥美的电冰箱有限公司 | Refrigerator and its control method |
| CN110081648A (en) * | 2019-05-30 | 2019-08-02 | 罗优才 | A kind of temperature, the adjustable heating-cooling equipment of humidity |
| CN212778129U (en) * | 2020-05-22 | 2021-03-23 | 青岛海尔电冰箱有限公司 | Refrigerator with a door |
| CN113432366A (en) * | 2020-03-23 | 2021-09-24 | 青岛海尔智能技术研发有限公司 | Refrigerator with a door |
-
2020
- 2020-05-29 CN CN202010477227.0A patent/CN113739485A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01219472A (en) * | 1988-02-26 | 1989-09-01 | Matsushita Refrig Co Ltd | Refrigerator |
| EP1072850A2 (en) * | 1999-07-30 | 2001-01-31 | BKT Bonnet Kältetechnik GmbH | Refrigeration plant |
| JP2005271906A (en) * | 2004-02-27 | 2005-10-06 | Denso Corp | Air conditioner for vehicle |
| JP2005273994A (en) * | 2004-03-24 | 2005-10-06 | Okamura Corp | Open showcase |
| US20110011109A1 (en) * | 2009-07-16 | 2011-01-20 | Alexander Rafalovich | Dual evaporator defrost system for an appliance |
| CN202420018U (en) * | 2012-01-13 | 2012-09-05 | 重庆市威尔试验仪器有限公司 | Energy-saving mixed cascade refrigeration system |
| JP2014052100A (en) * | 2012-09-05 | 2014-03-20 | Sharp Corp | Refrigerator |
| WO2014173098A1 (en) * | 2013-04-27 | 2014-10-30 | 海尔集团公司 | Refrigerator and temperature control method thereof |
| CN103499156A (en) * | 2013-09-24 | 2014-01-08 | 广州赛宝仪器设备有限公司 | High-and-low-temperature environmental testing refrigerating system, high-and-low-temperature environmental testing box and control method |
| CN106403341A (en) * | 2016-09-05 | 2017-02-15 | 珠海格力电器股份有限公司 | Multi-temperature-zone cascade refrigeration system and low-temperature refrigerated storage box |
| CN207095133U (en) * | 2017-06-29 | 2018-03-13 | 青岛海尔特种电冰箱有限公司 | Side by side combination refrigerator |
| CN109612186A (en) * | 2018-12-05 | 2019-04-12 | 青岛海尔股份有限公司 | Wind cooling refrigerator |
| CN109764601A (en) * | 2018-12-18 | 2019-05-17 | 合肥美的电冰箱有限公司 | Refrigerator and its control method |
| CN110081648A (en) * | 2019-05-30 | 2019-08-02 | 罗优才 | A kind of temperature, the adjustable heating-cooling equipment of humidity |
| CN113432366A (en) * | 2020-03-23 | 2021-09-24 | 青岛海尔智能技术研发有限公司 | Refrigerator with a door |
| CN212778129U (en) * | 2020-05-22 | 2021-03-23 | 青岛海尔电冰箱有限公司 | Refrigerator with a door |
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Application publication date: 20211203 |