CN113720077B - Air-cooled refrigeration equipment - Google Patents
Air-cooled refrigeration equipment Download PDFInfo
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- CN113720077B CN113720077B CN202111032325.4A CN202111032325A CN113720077B CN 113720077 B CN113720077 B CN 113720077B CN 202111032325 A CN202111032325 A CN 202111032325A CN 113720077 B CN113720077 B CN 113720077B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 54
- 238000001704 evaporation Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 15
- 230000008020 evaporation Effects 0.000 claims description 12
- 230000002441 reversible effect Effects 0.000 claims description 12
- 238000010257 thawing Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- -1 drinks Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000003124 biologic agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 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
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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
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/008—Defroster control by timer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention provides air-cooled refrigeration equipment which comprises an equipment body, an evaporator and an air guide device. The equipment body is limited with a storage chamber, a refrigerating chamber and a return air duct which communicates the storage chamber with the refrigerating chamber. An evaporator is disposed within the refrigeration chamber. The air guide device comprises a device body and an air door assembly, wherein the device body is provided with an air inlet communicated with the refrigerating chamber, a first air outlet communicated with the storage chamber and a second air outlet communicated with the return air duct, and the air door assembly is used for controlling the air inlet to be communicated with the first air outlet and/or the second air outlet. The air-cooled refrigeration equipment can completely remove frosting on the evaporator, and ensures the refrigeration efficiency of the air-cooled refrigeration equipment.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly provides air-cooled refrigeration equipment.
Background
Air-cooled refrigeration devices include refrigerators, freezers, and freezers. In the long-term working process of the air-cooled refrigeration equipment, the evaporator of the air-cooled refrigeration equipment often frosts, and the refrigeration efficiency of the air-cooled refrigeration equipment is affected.
In order to ensure the cooling efficiency of the air-cooled refrigeration apparatus, the evaporator needs to be heated to melt frost on the surface of the evaporator. However, in the prior art, during the heating of the evaporator (for example, the evaporator is heated by the electric heating wire), the evaporator is heated unevenly, resulting in incomplete defrosting of the evaporator.
Disclosure of Invention
The invention aims to solve the problem that the defrosting is incomplete when the evaporator of the existing air-cooled refrigeration equipment is used for defrosting.
To achieve the above object, the present invention provides an air-cooled refrigeration apparatus comprising:
the equipment body is limited with a storage chamber, a refrigerating chamber and a return air duct which communicates the storage chamber with the refrigerating chamber;
an evaporator disposed within the refrigeration chamber;
the air guide device comprises a device body and an air door assembly, wherein the device body is provided with an air inlet communicated with the refrigerating chamber, a first air outlet communicated with the storage chamber and a second air outlet communicated with the return air duct, and the air door assembly is used for controlling the air inlet to be communicated with the first air outlet and/or the second air outlet.
Optionally, the device body includes:
the air inlet cavity is communicated with the air inlet;
the air outlet cavity is respectively communicated with the first air outlet and the second air outlet;
the first channel is used for communicating the air inlet cavity with the air outlet cavity and corresponds to the first air outlet;
and the second channel is used for communicating the air inlet cavity with the air outlet cavity and corresponds to the second air outlet.
Optionally, the air door assembly comprises a driving device, a first air door for closing the first channel and a second air door for closing the second channel, and the first air door and the second air door are respectively and pivotally connected with the device body; the air door assembly is configured to enable the driving device to drive the first air door to rotate forwards independently so as to open the first channel, and therefore the air inlet is communicated with the first air outlet; the damper assembly is further configured to cause the drive device to drive the first damper and the second damper to simultaneously reverse to open the second passageway, thereby causing the air inlet to communicate with the second air outlet and causing the first damper to block communication between the air inlet and the first air outlet.
Optionally, the damper assembly further includes a link, the first damper includes a first pivot shaft pivotally connected to the device body and a first pivot portion pivotally connected to the link, the first pivot portion being slidable along an extension direction of the link; the second air door comprises a second pivot shaft pivotally connected with the device body and a second pivot part pivotally connected with the connecting rod; the first air door is fixedly connected with the rotating shaft of the driving device.
Optionally, a chute is provided on the link, and the first pivot portion is slidably mounted in the chute; and/or the first pivot shaft is positioned on one side of the first channel close to the second channel, and the second pivot shaft is positioned on one side of the second channel close to the first channel.
Optionally, in a state that the air inlet is communicated with the first air outlet, the first air door is turned over into the air outlet cavity and divides the air outlet cavity into a first air outlet cavity communicated with the first air outlet and a second air outlet cavity communicated with the second air outlet, and the second air door is kept in a state of closing the second air duct; and/or under the state that the air inlet is communicated with the second air outlet, the first air door is turned over to the air inlet cavity and divides the air inlet cavity into a first air inlet cavity communicated with the air inlet and a second air inlet cavity not communicated with the air inlet, and the second air door is turned over to the air outlet cavity and divides the air outlet cavity into the first air outlet cavity and the second air outlet cavity.
Optionally, the first air door is fixedly connected with the rotating shaft of the driving device, the air door assembly further comprises a stirring member fixedly connected with the rotating shaft of the driving device, a stirred piece is arranged on the second air door, the stirring member is not contacted with the stirred piece when the driving device rotates forward, and the stirring member is abutted with the stirred piece when the driving device rotates reversely and drives the second air door to open the second channel.
Optionally, the damper assembly is configured to rotate the first damper in reverse and in forward sequence a plurality of times after the first damper is flipped into the air intake cavity and before the first damper blocks communication between the air intake and the first air outlet.
Optionally, the air door assembly is configured to enable the first air door to rotate forward by a preset angle and then to rotate reversely again to a position blocking communication between the air inlet and the first air outlet after defrosting of the evaporator for a preset period of time.
Optionally, the air-cooled refrigeration device is configured to reverse or stop rotation of an evaporation fan of the air-cooled refrigeration device before the first damper is rotated forward by a preset angle; and/or the preset angle is within the range of 5-15 degrees.
Based on the foregoing description, it can be appreciated by those skilled in the art that in the foregoing technical solution of the present invention, by communicating the air inlet of the device body with the refrigeration chamber, communicating the first air outlet of the device body with the storage chamber, communicating the second air outlet of the device body with the return air duct, and controlling the communication between the air inlet and the first air outlet and/or the second air outlet by the damper assembly, the refrigeration chamber, the device body and the return air duct can form a loop, so that when the evaporator is defrosted, the heated air near the evaporator circulates along the paths of the refrigeration chamber, the air inlet, the second air outlet and the return air duct, thereby continuously blowing the surface of the evaporator, and further, the frost on the surface of the evaporator can be completely melted. Therefore, the air-cooled refrigeration equipment can completely remove frosting on the evaporator, and ensures the refrigeration efficiency of the air-cooled refrigeration equipment.
Further, the driving device can drive the first air door to rotate forwards independently, and the first channel is opened, so that the air inlet is communicated with the first air outlet only; the driving device can drive the first air door and the second air door to rotate reversely at the same time so as to open the second channel, so that the air inlet is communicated with the second air outlet only, and the air-cooled refrigeration equipment can realize the switching between a normal refrigeration air path and a defrosting air path only by one driving device, thereby reducing the production cost.
Further, after the first air door is turned over to the air inlet cavity, and before the first air door blocks the communication between the air inlet and the first air outlet, the first air door can clear frost on the side wall of the air inlet cavity through multiple positive and negative rotations by sequentially reversing and rotating the first air door for multiple times, so that the situation that the first air door cannot rotate to a position blocking the communication between the air inlet and the first air outlet due to the obstruction of the frost on the side wall of the air inlet cavity is avoided.
Further, after defrosting of the evaporator is performed for a preset period of time (frost on the side wall of the part, communicated with the air inlet, of the air inlet cavity is melted in the process), the first air door rotates forward by a preset angle and then rotates reversely to a position for blocking communication between the air inlet and the first air outlet again, so that the situation that the first air door cannot rotate to a position for blocking communication between the air inlet and the first air outlet due to obstruction of frost on the side wall of the air inlet cavity is avoided.
Still further, before making the first air door forward rotation preset the angle, through making the evaporation fan of air-cooled refrigeration plant reverse rotation or stop rotating, avoided evaporation fan to send hot-blast to the storeroom through the wind-guiding device, and then avoided the storeroom to appear the condition of temperature rise because of receiving hot-blast.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. It will be understood by those skilled in the art that components or portions thereof identified in different drawings by the same reference numerals are identical or similar; the drawings of the invention are not necessarily to scale relative to each other.
In the accompanying drawings:
FIG. 1 is a schematic diagram of the effect of an air-cooled refrigeration appliance (evaporator in an inactive state) in some embodiments of the invention;
FIG. 2 is a schematic structural diagram of the air guiding device in FIG. 1 (the air inlet is not communicated with the first air outlet and the second air outlet);
FIG. 3 is a cross-sectional view of the air guiding device of FIG. 2 taken along the direction A-A;
FIG. 4 is a schematic diagram of the effect of an air-cooled refrigeration appliance (evaporator refrigeration) in some embodiments of the invention;
FIG. 5 is a schematic diagram of the air guiding device in FIG. 4 (the air inlet is communicated with the first air outlet);
FIG. 6 is a schematic diagram of the effect of an air-cooled refrigeration appliance (evaporator defrost) in some embodiments of the invention;
FIG. 7 is a schematic diagram of the air guiding device of FIG. 6 (the air inlet communicates with the second air outlet);
FIG. 8 is a schematic diagram of an air guiding device according to another embodiment of the present invention (the air inlet is not communicated with the first air outlet and the second air outlet);
FIG. 9 is a schematic diagram of an air guiding device according to another embodiment of the present invention (an air inlet communicates with a first air outlet);
fig. 10 is a schematic structural diagram of an air guiding device according to another embodiment of the present invention (the air inlet communicates with the second air outlet).
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention, and the some embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments provided by the present invention, shall still fall within the scope of protection of the present invention.
It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships, which are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
An air-cooled refrigeration apparatus according to some embodiments of the present invention will be described in detail below with reference to fig. 1 to 7. Fig. 1 is a schematic diagram of an effect of an air-cooled refrigeration apparatus (the evaporator is in a non-working state) according to some embodiments of the present invention, fig. 2 is a schematic diagram of a structure of an air guiding device in fig. 1 (an air inlet is not communicated with a first air outlet and a second air outlet), fig. 3 is a cross-sectional view of the air guiding device in A-A direction in fig. 2, fig. 4 is a schematic diagram of an effect of an air-cooled refrigeration apparatus (the evaporator is cooled) according to some embodiments of the present invention, fig. 5 is a schematic diagram of a structure of an air guiding device in fig. 4 (an air inlet is communicated with a first air outlet), fig. 6 is a schematic diagram of an effect of an air-cooled refrigeration apparatus (the evaporator is defrosted) according to some embodiments of the present invention, and fig. 7 is a schematic diagram of an air guiding device in fig. 6 (an air inlet is communicated with a second air outlet).
As shown in fig. 1, in some embodiments of the present invention, an air-cooled refrigeration apparatus includes an apparatus body 1, an evaporator 2, an evaporation fan 3, and an air guide 4. The apparatus body 1 defines a storage chamber 11, a cooling chamber 12, and a return air duct 13 that communicates the storage chamber 11 with the cooling chamber 12. The evaporator 2 is disposed within the refrigeration compartment 12. The air outlet of the refrigerating chamber 12 is selectively communicated with the storage chamber 11 or the refrigerating chamber 12 through the air guide 4. The evaporating fan 3 is used for conveying air in the refrigerating chamber 12 into the air guiding device 4. Preferably, the evaporating fan 3 is arranged at the outlet of the refrigerating chamber 12.
As shown in fig. 1 and 2, the air guiding device 4 includes a device body 41 and an air door assembly 42. The device body 41 is provided with an air inlet 411 communicated with the refrigerating chamber 12, a first air outlet 412 communicated with the storage chamber 11 and a second air outlet 413 communicated with the return air duct 13, and the air door assembly 42 is used for controlling the communication between the air inlet 411 and the first air outlet 412 and/or the second air outlet 413.
As shown in fig. 2, the device body 41 includes an air inlet chamber 414, an air outlet chamber 415, a first passage 416, and a second passage 417. Wherein the air inlet cavity 414 is communicated with the air inlet 411. The air outlet cavity 415 is respectively communicated with the first air outlet 412 and the second air outlet 413. The first passage 416 communicates the air inlet chamber 414 with the air outlet chamber 415 and corresponds to the first air outlet 412. The second passage 417 communicates the air inlet chamber 414 with the air outlet chamber 415 and corresponds to the second air outlet 413.
As shown in fig. 2 and 3, the damper assembly 42 includes a first damper 421, a second damper 422, a link 423, and a driving device 424. Wherein the first damper 421 is used to close the first passage 416 and the second damper 422 is used to close the second passage 417. The link 423 is drivingly connected to the first and second dampers 421 and 422, respectively, to enable the first and second dampers 421 and 422 to be linked. The driving device 424 is used for driving the first air door 421 and/or the second air door 422 to rotate, so that the air inlet 411 is communicated with the first air outlet 412 or the second air outlet 413.
With continued reference to fig. 2 and 3, the first damper 421 includes a first pivot shaft 4211 and a first pivot portion 4212, and the second damper 422 includes a second pivot shaft 4221 and a second pivot portion 4222. The link 423 is provided with a chute 4231. Further, the first damper 421 is pivotally connected to the apparatus body 41 by a first pivot shaft 4211; the first damper 421 is mounted into the chute 4231 by the first pivot portion 4212 so that the first damper 421 can not only rotate relative to the link 423 but also slide the first pivot portion 4212 in the extending direction of the link 423. The second damper 422 is pivotally connected to the apparatus body 41 by a second pivot shaft 4221; the second damper 422 is pivotally connected to the link 423 through a second pivot 4222.
With continued reference to fig. 2 and 3, the first pivot shaft 4211 is located on a side of the first channel 416 adjacent to the second channel 417, and the second pivot shaft 4221 is located on a side of the second channel 417 adjacent to the first channel 416.
As shown in fig. 3, the first damper 421 is fixedly connected to the rotation shaft of the driving device 424 through a first pivot shaft 4211. The driving device 424 may be a motor, or a combination of a speed reducer and a motor. When the driving device 424 is a motor, the rotation shaft of the driving device 424 is the rotation shaft of the motor; when the driving device 424 is a combination of a decelerator and a motor, the rotation axis of the driving device 424 is the rotation axis of the decelerator.
With continued reference to fig. 3, the link 423 and the driving device 424 are disposed outside of the first passage 416 and the second passage 417 to avoid the link 423 and the driving device 424 interfering with the rotation of the first damper 421 and the second damper 422.
The following describes the operation of the air guiding device 4 according to some embodiments of the present invention in detail with reference to fig. 1 to 7.
As shown in fig. 1 to 3, when the temperature in the refrigerating chamber 11 is reduced to a preset temperature (e.g., 0 c, 1 c to 16 c, -18 c, etc.), the evaporator 2 stops cooling, the evaporation fan 3 stops rotating, and the compressor (not shown) stops operating. The first damper 421 closes the first passage 416 and the second damper 422 closes the second passage 417.
As shown in fig. 4 and 5, when the evaporator 2 is refrigerating, the evaporation fan 3 is rotated in a forward direction to deliver the air cooled by the evaporator 2 to the air guide 4. The driving device 424 drives the first damper 421 to rotate forward (in the counterclockwise direction in fig. 2) from the position shown in fig. 2 to the position shown in fig. 5. At this time, one end of the first damper 421 away from the first pivot shaft 4211 abuts against the side wall of the air outlet cavity 415, and thus separates the air outlet cavity 415 into a first air outlet cavity 4151 communicating with the first air outlet 412 and a second air outlet cavity 4152 communicating with the second air outlet 413.
During the forward rotation of the first damper 421 from the position shown in fig. 2 to the position shown in fig. 5, the first pivot portion 4212 of the first damper 421 slides within the chute 4231 of the link 423 and thus causes the link 423 to forward rotate from the position shown in fig. 2 to the position shown in fig. 5.
The air flows in the direction indicated by the arrow in fig. 4 by the evaporation fan 3, and cools the storage chamber 11.
As shown in fig. 6 and 7, when the evaporator 2 is frosted, the evaporation fan 3 is rotated forward to deliver the hot air in the refrigerating chamber 12 to the air guide 4. The driving device 424 drives the first damper 421 to reverse (in the clockwise direction in fig. 2) from the position shown in fig. 2 to the position shown in fig. 7. At this time, one end of the first damper 421 away from the first pivot shaft 4211 abuts against the side wall of the air intake chamber 414, and thus the air intake chamber 414 is partitioned into a first air intake chamber 4141 communicating with the air intake 411 and a second air intake chamber 4142 not communicating with the air intake 411.
During the process of reversing the first damper 421 from the position shown in fig. 2 to the position shown in fig. 7, the first pivot portion 4212 of the first damper 421 always abuts against the side wall of the chute 4231, and thus the link 423 is reversed from the position shown in fig. 2 to the position shown in fig. 7, while the link 423 is reversed to the position shown in fig. 7, the end of the second damper 422 away from the second pivot shaft 4221 abuts against the side wall of the air outlet cavity 415, and thus the air outlet cavity 415 is partitioned into a first air outlet cavity 4151 communicating with the first air outlet 412 and a second air outlet cavity 4152 communicating with the second air outlet 413.
Under the action of the evaporating fan 3, air flows along the direction indicated by an arrow in fig. 6, so that heated air near the evaporator 2 circularly flows along the paths of the refrigerating chamber 12, the air inlet 411, the second air outlet 413 and the return air duct 43, and the surface of the evaporator 2 is continuously blown, so that frost on the surface of the evaporator 2 can be completely melted.
In some embodiments of the invention, to enable the second damper 422 to be actuated by the link 423 from the position shown in fig. 2 to the position shown in fig. 7, the second pivot 4222 may be positioned above the first pivot 4212 in fig. 2 and the second pivot 4222 may be positioned above the second pivot 4221 to prevent the second damper 422 from tipping in a counter-clockwise direction into the air intake cavity 414.
Further, in some embodiments of the present invention, in order to achieve the function of heating the evaporator 2, an electric heater may be configured for the evaporator 2, and the evaporator 2 is heated by the electric heater; it is also possible to provide the evaporator 2 with a condenser in the refrigerating chamber 11, so that the evaporator 2 is heated by the condenser; it is also possible to use at least a part of the evaporator 2 as a condenser to heat the evaporator 2.
The structure of the air guiding device 4 according to other embodiments of the present invention will be described in detail with reference to fig. 8 to 10. Fig. 8 is a schematic structural diagram of the air guiding device 4 according to another embodiment of the present invention (the air inlet 411 is not communicated with the first air outlet 412 and the second air outlet 413), fig. 9 is a schematic structural diagram of the air guiding device 4 according to another embodiment of the present invention (the air inlet 411 is communicated with the first air outlet 412), and fig. 10 is a schematic structural diagram of the air guiding device 4 according to another embodiment of the present invention (the air inlet 411 is communicated with the second air outlet 413).
As shown in fig. 8-10, in other embodiments of the present invention, the damper assembly 42 further includes a toggle member 425 fixedly coupled to the rotational shaft of the drive device 424. The second damper 422 is provided with a driven member 4223. The toggle member 425 does not contact the toggled piece 4223 when the driving device 424 is rotated forward, and the toggle member 425 abuts the toggled piece 4223 when the driving device 424 is rotated backward and thereby drives the second damper 422 to open the second passageway 417.
As shown in fig. 8, when the temperature in the refrigerating chamber 11 is lowered to a preset temperature (e.g., 0 c, 1 c to 16 c, -18 c, etc.), the evaporator 2 stops cooling, the evaporation fan 3 stops rotating, and the compressor (not shown) stops operating. The first damper 421 closes the first passage 416 and the second damper 422 closes the second passage 417.
As shown in fig. 8 and 9, when the evaporator 2 is refrigerating, the evaporation fan 3 is rotated forward to deliver the air cooled by the evaporator 2 to the air guide 4. The driving device 424 drives the first damper 421 to rotate forward (in the direction indicated by the broken-line arrow in fig. 8) from the position shown in fig. 8 to the position shown in fig. 9. In the process, the dial member 425 rotates in a direction away from the dial 4223 without contacting the dial 4223.
As shown in fig. 8 and 10, when the evaporator 2 is frosted, the evaporation fan 3 is rotated forward to deliver the air of the refrigerating chamber 12 to the air guide 4. The driving device 424 drives the first damper 421 to reverse (in the direction indicated by the solid arrow in fig. 8) from the position shown in fig. 8 to the position shown in fig. 10. In the process, the toggle member 425 is always abutted against the toggled piece 4223, and drives the second damper 422 to reverse (in the direction indicated by the solid arrow in fig. 8) from the position shown in fig. 8 to the position shown in fig. 10.
Based on the foregoing description, it will be appreciated by those skilled in the art that since the driving device 424 can drive the first damper 421 to rotate forward alone, the first passage 416 is opened to allow the air inlet 411 to communicate with only the first air outlet 412; and the driving device 424 can drive the first air door 421 and the second air door 422 to rotate reversely at the same time to open the second channel 417, so that the air inlet 411 is only communicated with the second air outlet 413, and the air-cooled refrigeration equipment can realize the switching between the normal refrigeration air path and the defrosting air path only by one driving device 424, thereby reducing the production cost.
As will be appreciated by those skilled in the art, during the process of refrigerating the storage chamber 11 by the air-cooled refrigerating apparatus, cold air will enter the device body 41, so that frost will also appear on the side walls of the air inlet chamber 414 and the air outlet chamber 415. When there is more frost formed on the sidewalls of the air inlet chamber 414 and the air outlet chamber 415, the rotation of the first air door 421 and the second air door 422 is blocked, so that the first air inlet chamber 4141 and the second air inlet chamber 4142 cannot be sealed and the first air outlet chamber 4151 and the second air outlet chamber 4152 cannot be sealed.
To avoid this, in other embodiments of the present invention, the damper assembly 42 is configured to rotate the first damper 421 in reverse and in forward sequence a plurality of times after the first damper 421 is flipped into the air intake chamber 414 as shown in fig. 7 and 10, and before the first damper 421 blocks communication between the air intake 411 and the first air outlet 412. Specifically, after the first damper 421 is turned over into the air intake chamber 414 as shown in fig. 7 and 10, the first damper 421 is alternately rotated forward and backward so that the alternately rotated first damper 421 scoops frost on the side wall of the air intake chamber 414 and the second damper 422 scoops frost on the side wall of the air outlet chamber 415, thereby ensuring that the first damper 421 can be rotated to a position blocking communication between the air intake 411 and the first air outlet 412.
Alternatively, in still other embodiments of the present invention, the damper assembly 42 may be configured to rotate the first damper 421 forward by a predetermined angle and then reverse again to a position blocking communication between the air inlet 411 and the first air outlet 412 after a predetermined period of defrosting of the evaporator 2.
The preset time period is the time when frost on the side walls of the air inlet cavity 414 and the air outlet cavity 415 is melted when the evaporator 2 is heated. The preset duration may be any feasible duration, such as 3 minutes, 5 minutes, 10 minutes, etc.
The range of the preset angle is preferably 5 ° -15 °, for example 5 °, 8 °, 10 °, 13 °, 15 °, etc. The preset angle should not be too large, which would cause hot air to enter the storage chamber 11 in a large amount, and affect the refrigerating, freezing and preserving effects of the stored objects (including food materials, medicines, drinks, biological agents, bacterial colonies, chemical agents, etc.).
Further, in still other embodiments of the present invention, the air-cooled refrigeration appliance is further configured to reverse or stop rotation of the evaporating fan 3 of the air-cooled refrigeration appliance before the first damper 421 is rotated forward by a predetermined angle to prevent hot air from entering the storage compartment 11 through the gap between the first damper 421 and the sidewall of the air intake cavity 414 and/or the gap between the second damper 422 and the sidewall of the air outlet cavity 415.
Thus far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it will be readily understood by those skilled in the art that the scope of the present invention is not limited to only these specific embodiments. The technical solutions in the above embodiments can be split and combined by those skilled in the art without departing from the technical principles of the present invention, and equivalent changes or substitutions can be made to related technical features, so any changes, equivalent substitutions, improvements, etc. made within the technical principles and/or technical concepts of the present invention will fall within the protection scope of the present invention.
Claims (8)
1. An air-cooled refrigeration device comprising:
the equipment body is limited with a storage chamber, a refrigerating chamber and a return air duct which communicates the storage chamber with the refrigerating chamber;
an evaporator disposed within the refrigeration chamber;
the air guide device comprises a device body and an air door assembly, wherein the device body is provided with an air inlet communicated with the refrigerating chamber, a first air outlet communicated with the storage chamber and a second air outlet communicated with the return air duct, and the air door assembly is used for controlling the air inlet to be communicated with the first air outlet or the second air outlet;
wherein,,
the device body includes:
the air inlet cavity is communicated with the air inlet;
the air outlet cavity is respectively communicated with the first air outlet and the second air outlet;
the first channel is used for communicating the air inlet cavity with the air outlet cavity and corresponds to the first air outlet;
the second channel is used for communicating the air inlet cavity with the air outlet cavity and corresponds to the second air outlet;
the air door assembly comprises a driving device, a first air door for closing the first channel and a second air door for closing the second channel, and the first air door and the second air door are respectively and pivotally connected with the device body; the air door assembly is configured to enable the driving device to drive the first air door to rotate forwards independently so as to open the first channel, and therefore the air inlet is communicated with the first air outlet; the air door assembly is further configured to cause the driving device to drive the first air door and the second air door to simultaneously rotate reversely to open the second channel, thereby causing the air inlet to communicate with the second air outlet and causing the first air door to block communication between the air inlet and the first air outlet;
the air door assembly further comprises a connecting rod, and a sliding groove is formed in the connecting rod; the first air door comprises a first pivot shaft pivotally connected with the device body and a first pivot part pivotally connected with the connecting rod, and the first pivot part is slidably installed in the sliding groove so as to enable the first pivot part to be slidable along the extending direction of the connecting rod; the second air door comprises a second pivot shaft pivotally connected with the device body and a second pivot part pivotally connected with the connecting rod; the first pivot shaft is positioned on one side of the first channel close to the second channel, and the second pivot shaft is positioned on one side of the second channel close to the first channel; the first air door is fixedly connected with the rotating shaft of the driving device.
2. The air-cooled refrigeration appliance of claim 1, wherein,
in a state that the air inlet is communicated with the first air outlet, the first air door is turned over into the air outlet cavity and divides the air outlet cavity into a first air outlet cavity communicated with the first air outlet and a second air outlet cavity communicated with the second air outlet, and the second air door is kept in a state of closing the second channel; and/or the number of the groups of groups,
under the state that the air inlet is communicated with the second air outlet, the first air door is turned over to the air inlet cavity and divides the air inlet cavity into a first air inlet cavity communicated with the air inlet and a second air inlet cavity not communicated with the air inlet, and the second air door is turned over to the air outlet cavity and divides the air outlet cavity into a first air outlet cavity and a second air outlet cavity.
3. The air-cooled refrigeration appliance of claim 2, wherein,
the first air door is fixedly connected with the rotating shaft of the driving device,
the air door assembly also comprises a toggle member fixedly connected with the rotating shaft of the driving device,
the second air door is provided with a stirred piece,
the stirring member is not contacted with the stirred piece when the driving device rotates forwards, and is abutted with the stirred piece when the driving device rotates reversely, so that the second air door is driven to open the second channel.
4. An air-cooled refrigeration appliance according to any of claims 1 to 3 wherein,
the damper assembly is configured to sequentially reverse and forward rotate the first damper a plurality of times after the first damper is flipped into the air intake cavity and before the first damper blocks communication between the air intake and the first air outlet.
5. An air-cooled refrigeration appliance according to any of claims 1 to 3 wherein,
the air door assembly is configured to enable the first air door to rotate forward by a preset angle and then rotate reversely again to a position for blocking communication between the air inlet and the first air outlet after defrosting of the evaporator is performed for a preset period of time.
6. The air-cooled refrigeration appliance of claim 5, wherein,
the air-cooled refrigeration device is configured to reverse or stop rotation of an evaporation fan of the air-cooled refrigeration device before the first damper is rotated forward by a preset angle.
7. The air-cooled refrigeration appliance of claim 5, wherein,
the value range of the preset angle is 5-15 degrees.
8. The air-cooled refrigeration appliance of claim 6, wherein,
the value range of the preset angle is 5-15 degrees.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111032325.4A CN113720077B (en) | 2021-09-03 | 2021-09-03 | Air-cooled refrigeration equipment |
| PCT/CN2022/088219 WO2023029517A1 (en) | 2021-09-03 | 2022-04-21 | Air-cooled refrigeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111032325.4A CN113720077B (en) | 2021-09-03 | 2021-09-03 | Air-cooled refrigeration equipment |
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| Publication Number | Publication Date |
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| CN113720077A CN113720077A (en) | 2021-11-30 |
| CN113720077B true CN113720077B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111032325.4A Active CN113720077B (en) | 2021-09-03 | 2021-09-03 | Air-cooled refrigeration equipment |
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| WO (1) | WO2023029517A1 (en) |
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| CN113720077B (en) * | 2021-09-03 | 2023-05-16 | 青岛海尔电冰箱有限公司 | Air-cooled refrigeration equipment |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100085228A (en) * | 2009-01-20 | 2010-07-29 | 주식회사 대우일렉트로닉스 | Defrosting apparatus of refrigerator |
| CN104792094B (en) * | 2015-04-29 | 2018-02-02 | 青岛海尔股份有限公司 | A kind of fridge-freezer and its defrosting control method |
| CN104807279B (en) * | 2015-04-29 | 2019-01-18 | 青岛海尔股份有限公司 | A kind of fridge-freezer and its defrosting control method |
| CN106766532B (en) * | 2016-12-28 | 2018-04-20 | 青岛海尔股份有限公司 | Constant temperature refrigerator and its control method |
| CN206739723U (en) * | 2017-03-07 | 2017-12-12 | 南京创维家用电器有限公司 | A kind of anti-freeze refrigerator air door and refrigerator |
| CN107940871B (en) * | 2017-11-07 | 2020-02-28 | 合肥华凌股份有限公司 | Air duct assembly and refrigerator with same |
| CN110081646B (en) * | 2019-05-17 | 2021-04-27 | 合肥华凌股份有限公司 | Air duct assembly and refrigeration equipment |
| CN113074491A (en) * | 2020-01-03 | 2021-07-06 | 青岛海尔智能技术研发有限公司 | Air-cooled refrigerator |
| CN112325543B (en) * | 2020-11-26 | 2023-12-22 | 珠海格力电器股份有限公司 | Refrigerator, control method thereof, controller and computer readable storage medium |
| CN113720077B (en) * | 2021-09-03 | 2023-05-16 | 青岛海尔电冰箱有限公司 | Air-cooled refrigeration equipment |
-
2021
- 2021-09-03 CN CN202111032325.4A patent/CN113720077B/en active Active
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| WO2023029517A1 (en) | 2023-03-09 |
| CN113720077A (en) | 2021-11-30 |
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