CN113375403A - Defrosting module, refrigeration equipment and control method - Google Patents
Defrosting module, refrigeration equipment and control method Download PDFInfo
- Publication number
- CN113375403A CN113375403A CN202110672511.8A CN202110672511A CN113375403A CN 113375403 A CN113375403 A CN 113375403A CN 202110672511 A CN202110672511 A CN 202110672511A CN 113375403 A CN113375403 A CN 113375403A
- Authority
- CN
- China
- Prior art keywords
- defrosting
- evaporator
- air
- refrigeration
- mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 165
- 238000005057 refrigeration Methods 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008014 freezing Effects 0.000 claims abstract description 63
- 238000007710 freezing Methods 0.000 claims abstract description 63
- 239000003507 refrigerant Substances 0.000 claims abstract description 53
- 238000007791 dehumidification Methods 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims description 19
- 239000004065 semiconductor Substances 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000859 sublimation Methods 0.000 abstract description 37
- 230000008022 sublimation Effects 0.000 abstract description 37
- 239000003570 air Substances 0.000 description 199
- 238000010586 diagram Methods 0.000 description 10
- 230000006872 improvement Effects 0.000 description 10
- 238000005485 electric heating Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/041—Treating air flowing to refrigeration compartments by purification
- F25D2317/0411—Treating air flowing to refrigeration compartments by purification by dehumidification
Landscapes
- 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)
- Defrosting Systems (AREA)
Abstract
The invention provides a defrosting module, refrigeration equipment and a control method, relates to the technical field of household appliances, and solves the technical problems that a refrigerator in a hot gas bypass mode is long in defrosting time and easy to cause temperature rise of a storage compartment. The defrosting module comprises a dehumidifying device, a drainage air channel and a defrosting flow path; the defrosting flow path is connected between the compressor and the evaporator; the dehumidification device is arranged in the refrigerating chamber return air duct and is used for dehumidifying the return air of the refrigerating chamber; the drainage air duct is arranged between the refrigerating chamber air return duct and the freezing air duct and is used for introducing cold air in the freezing air duct into the refrigerating chamber air return duct during defrosting; the refrigeration equipment comprises a compressor, a condenser, a first capillary tube, an evaporator and the defrosting module which are sequentially connected through a refrigerant flow path. According to the invention, the refrigerating or dehumidifying device is additionally arranged in the air return channel of the refrigerating chamber, so that the sublimation defrosting function is realized, the defrosting time is shortened, and the defrosting efficiency is improved; the problem of large temperature rise of the chamber during defrosting is avoided.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a defrosting module, refrigeration equipment and a control method.
Background
The air-cooled refrigerator has an automatic defrosting function, and the defrosting mode commonly adopted is defrosting by an electric heater. The electric heating pipe is arranged below the evaporator, natural convection is formed by heating air, and the evaporator is defrosted by heat radiation of the electric heating pipe, so that the defrosting efficiency is low, the defrosting time is long, and the defrosting power consumption is high. The defrosting process is influenced by natural convection hot air, the temperature of the storage compartment is high, the bacterial reproduction speed is accelerated, and the quality guarantee period of the food materials is shortened.
The efficiency can be improved to a certain extent through a hot gas bypass mode relative to an electric heating mode, although the mode of directly improving the temperature of the refrigerant through the compressor in the bypass circulation can be higher than the efficiency of an indirect mode of electric heating, the efficiency is limited by a system structure, the temperature of the refrigerant is still not high enough and the defrosting time is still longer only by the defrosting circulation of improving the temperature of the refrigerant through the operation of the compressor, so that the temperature rise of a storage compartment is easy to cause.
Disclosure of Invention
The invention aims to provide a defrosting module, refrigeration equipment and a control method, which aim to solve the technical problems that the defrosting time of a refrigerator adopting a hot gas bypass mode is long and the temperature rise of a storage compartment is easily caused in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a defrosting module which comprises a dehumidifying device, a drainage air channel and a defrosting flow path, wherein the dehumidifying device comprises a first air inlet and a second air inlet; wherein:
the defrosting flow path is connected between the compressor and the evaporator;
the dehumidification device is arranged in the refrigerating chamber return air duct and is used for dehumidifying the return air of the refrigerating chamber;
the drainage air duct is arranged between the refrigerating chamber air return duct and the freezing air duct and used for introducing cold air in the freezing air duct into the refrigerating chamber air return duct during defrosting.
As a further improvement of the invention, the air conditioner further comprises an air door and a shielding device, wherein the air door is arranged at the drainage air duct in an openable and closable manner; the shielding device can be arranged at the air return opening and the air outlet of the freezing air duct in an opening and closing mode, and the opening and closing states of the shielding device and the air door are opposite.
As a further improvement of the present invention, the dehumidifying apparatus includes a second capillary tube and a defrosting evaporator connected in series through a defrosting branch, which is connected in parallel with the return flow path between the compressor and the evaporator.
As a further improvement of the invention, the dehumidifying device comprises a semiconductor refrigerating sheet or a dehumidifying and moisture-blocking piece.
As a further improvement of the present invention, the present invention further includes a cooperative cooling flow path connected to the defrosting evaporator, and a start end of the cooperative cooling flow path is connected to the evaporator in parallel or in series.
As a further improvement of the invention, the dehumidification moisture-resistant part is a silica gel desiccant bag.
As a further improvement of the invention, the refrigeration equipment further comprises a shielding piece movably arranged in the return air duct of the refrigerating chamber, and when the refrigeration equipment is in a refrigeration mode, the shielding piece moves to a closed position to partially or completely shield the dehumidification moisture barrier; when the refrigeration appliance is in the defrost mode, the shutter is moved to the open position to fully expose the dehumidification moisture barrier.
As a further improvement of the invention, the drainage air duct is arranged at the position of the freezing air duct close to the upper layer of the freezing chamber, and the dehumidifying device is arranged at the position of the return air duct of the refrigerating chamber close to the lower layer of the freezing chamber.
The invention provides refrigeration equipment which comprises a compressor, a condenser, a first capillary tube, an evaporator and a defrosting module, wherein the compressor, the condenser, the first capillary tube, the evaporator and the defrosting module are sequentially connected through a refrigerant flow path.
As a further improvement of the present invention, when the dehumidifying device is a defrosting evaporator, the dehumidifying device further comprises a second capillary tube, and the second capillary tube and the defrosting evaporator are sequentially connected between the evaporator and the compressor; the starting end of the cooperative refrigeration flow path is connected to the outlet side of the evaporator, or is connected to the outlet side of the first capillary tube; the tail end is connected to the inlet side of the defrosting evaporator.
As a further improvement of the present invention, when the dehumidifying device is a defrosting evaporator, the refrigerating apparatus has three operation modes, which are a single refrigeration mode, a double refrigeration mode and an internal defrosting mode; when the dehumidifying device is a semiconductor refrigerating sheet or a dehumidifying and moisture-blocking piece, the refrigerating equipment has two operation modes, namely a single refrigerating mode and an internal defrosting mode.
As a further improvement of the present invention, the refrigeration apparatus is a refrigerator.
The invention provides a control method of the refrigeration equipment,
when the dehumidifying device is a defrosting evaporator, the method comprises the following control steps:
200, when the refrigeration equipment is in a refrigeration mode, the refrigeration equipment further comprises a single refrigeration mode for realizing the operation refrigeration of only the evaporator by controlling the opening and closing of a switching valve, and a double refrigeration mode for realizing the simultaneous refrigeration of the evaporator and the defrosting evaporator in a serial or parallel mode;
when the dehumidifying device is a semiconductor refrigerating sheet or a dehumidifying and moisture-blocking piece, the method comprises the following control steps:
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a refrigeration device with sublimation defrosting function, which is different from the prior electric heating defrosting or bypass pipeline defrosting mode and realizes the sublimation defrosting function by adding a refrigeration or dehumidification device in a return air duct of a refrigerating chamber, adding a refrigerating chamber air outlet, a return air inlet shielding device, a drainage air duct and an air door, wherein the added device uniformly and continuously provides low-temperature low-dew-point air for an evaporator and provides absolute humidity difference required by sublimation, hot refrigerant discharged by a compressor in a defrosting flow path provides sublimation latent heat for the root of a frost layer so as to ensure that a certain temperature difference is formed between the root of the frost layer and the returned air, solid water (frost) is directly changed into gaseous water (vapor) without passing through liquid under specific conditions, and when the surface frost layer of the evaporator forms a certain absolute humidity difference with the ambient air and the temperature of the frost layer reaches a certain condition, the root of the frost layer can be sublimated, and when the temperature of the frost layer decreases gradually from the root to the outside, the frost layer can be sublimated from the root and integrally peeled off, so that the defrosting time is shortened, and the defrosting efficiency is improved; the problem of large temperature rise of the chamber during defrosting is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a structural view of a refrigerator in a cooling state according to the present invention;
fig. 2 is a structural view of the refrigerator in a defrosting state according to the present invention;
FIG. 3 is a system diagram (in series) of a single refrigeration mode for achieving sublimation defrost function by adding a defrost evaporator in the refrigerator of the present invention;
FIG. 4 is a system diagram of a dual refrigeration mode system for achieving sublimation defrost function by adding a defrost evaporator in the refrigerator of the present invention;
FIG. 5 is a system diagram of a defrosting state of the refrigerator according to the present invention by adding a defrosting evaporator to perform a sublimation defrosting function;
FIG. 6 is a system diagram of the refrigerator of the present invention for implementing the sublimation defrosting function by adding the semiconductor refrigeration sheet or the dehumidification moisture-resistant member;
fig. 7 is a system diagram (parallel connection) of a double refrigeration mode of the refrigerator of the present invention for implementing the sublimation defrosting function by adding a defrosting evaporator.
In the figure 1, a drainage air duct; 2. a defrost flow path; 3. a damper; 4. a shielding device; 5. a defrosting branch; 6. a second capillary tube; 7. a defrosting evaporator; 8. a cooperative cooling flow path; 9. a first solenoid valve; 10. a second solenoid valve; 11. a third electromagnetic valve; 12. a fourth solenoid valve; 13. a fifth solenoid valve; 14. a stop valve; 100. a compressor; 200. an evaporator; 300. a return air duct of the refrigerating chamber; 400. a freezing air duct; 401. an air outlet; 402. an air return opening; 500. a freezing fan; 600. a return flow path; 800. a condenser; 900. a first capillary tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the following is specifically described by taking a refrigeration device as an example of a refrigerator:
the invention provides a defrosting module, which comprises a dehumidifying device, a drainage air duct 1 and a defrosting flow path 2; wherein:
the defrosting flow path 2 is connected between the compressor 100 and the evaporator 200;
the dehumidifying device is arranged in the refrigerating chamber return air duct 300 and is used for dehumidifying the refrigerating chamber return air;
the air guide duct 1 is disposed between the refrigerating chamber return duct 300 and the freezing air duct 400, and is used to introduce cold air in the freezing air duct 400 into the refrigerating chamber return duct 300 during defrosting.
It should be noted that a freezing fan 500 is disposed in the freezing air duct 400, an air outlet 401 and an air return opening 402 are disposed in the freezing air duct 400 corresponding to the position of the freezing chamber, and one end of the refrigerating chamber air return duct 300 is communicated with the refrigerating chamber and the other end is communicated with the freezing air duct 400. The defrosting flow path 2 is used to directly communicate the outlet of the compressor 100 with the evaporator 200 during defrosting, so that a high-temperature refrigerant directly enters the evaporator 200, thereby heating the frost layer at the root of the evaporator 200 and providing latent heat of sublimation for sublimation defrosting.
Further, in order to prevent wind cross, the wind-guiding device also comprises a wind door 3 and a shielding device 4, wherein the wind door 3 is arranged at the position of the wind-guiding duct 1 in an openable and closable manner; the shielding device 4 is disposed at the air return opening 402 and the air outlet 401 of the freezing air duct 400 in an openable and closable manner.
The shielding device 4 is used for opening or closing the air outlet 401 and the air return opening 402, the air door 3 is used for opening or closing the air guide duct 1, and the opening and closing states of the shielding device 4 and the air door 3 are opposite.
It should be further noted that the shielding device 4 may include a motor, a telescopic mechanism and a baffle, the baffle is connected to the motor through the telescopic mechanism, and when the motor operates, the baffle can be driven to stretch and retract relative to the mouth to open or close the mouth; of course, the shielding device 4 may further include an air cylinder and a baffle plate, the baffle plate is connected to the air cylinder, and the air cylinder drives the baffle plate to extend and retract when the air cylinder extends and retracts. The specific manner of the present invention is not particularly limited, as long as the air outlet and the air return opening can be opened or closed.
In the present embodiment, the dehumidifying apparatus includes the second capillary tube 6 and the defrosting evaporator 7 connected in series through the defrosting branch 5, and the defrosting branch 5 is connected in parallel with the return flow path 600 between the compressor 100 and the evaporator 200. The return flow path 600 is referred to herein specifically as the connecting line between the evaporator and the compressor in the prior art.
Here, at the connection points with the respective devices in the defrosting branch passage 5, the return passage 600, and the defrosting passage 2, switching valves are provided at positions where the refrigerant needs to be diverted, and the switching valves are basically formed by three-way valves or four-way valves.
Further, a cooperative cooling flow path 8 connected to the defrosting evaporator 200 is further included, and the start end of the cooperative cooling flow path 8 is connected to the evaporator 200 in parallel or in series.
When the cooperative refrigeration flow path 8 is connected in series with the evaporator 200, the start end thereof is connected to the outlet side of the evaporator 200 and then communicates with the inlet side of the defrosting evaporator 7, and actually, the connection positions of both ends of the cooperative refrigeration flow path 8 and the defrosting branch 5 are completely the same, and only the switching valve is used for realizing that the refrigerant flows into different pipelines to complete different functions. When the refrigerator refrigerates, the refrigerant passes through the evaporator 200 to refrigerate, and then passes through the defrosting evaporator 7 to refrigerate again, only the air refrigerated by the evaporator 200 is directly sent into the freezing chamber, the temperature changing chamber or the refrigerating chamber, and the air refrigerated by the defrosting evaporator 7 is sent into the evaporator 200 to exchange heat with the evaporator 200, so that the burden of the evaporator 200 is reduced, and the frost layer condensation is reduced.
The drainage air duct 1 is arranged at the position of the freezing air duct 400 close to the upper layer of the freezing chamber, namely the refrigerating chamber and the air door of the temperature-variable chamber or the front section of the refrigerating chamber and the air door of the temperature-variable chamber, and the dehumidifying device is arranged at the position of the refrigerating chamber return air duct 300 close to the lower layer of the freezing chamber, namely the rear section of the refrigerating chamber return air duct.
Example 2:
the following is specifically described by taking a refrigeration device as an example of a refrigerator:
the invention provides a defrosting module, which comprises a dehumidifying device, a drainage air duct 1 and a defrosting flow path 2; wherein:
the defrosting flow path 2 is connected between the compressor 100 and the evaporator 200;
the dehumidifying device is arranged in the refrigerating chamber return air duct 300 and is used for dehumidifying the refrigerating chamber return air;
the air guide duct 1 is disposed between the refrigerating chamber return duct 300 and the freezing air duct 400, and is used to introduce cold air in the freezing air duct 400 into the refrigerating chamber return duct 300 during defrosting.
It should be noted that a freezing fan 500 is disposed in the freezing air duct 400, an air outlet 401 and an air return opening 402 are disposed in the freezing air duct 400 corresponding to the position of the freezing chamber, and one end of the refrigerating chamber air return duct 300 is communicated with the refrigerating chamber and the other end is communicated with the freezing air duct 400. The defrosting flow path 2 is used to directly communicate the outlet of the compressor 100 with the evaporator 200 during defrosting, so that a high-temperature refrigerant directly enters the evaporator 200, thereby heating the frost layer at the root of the evaporator 200 and providing latent heat of sublimation for sublimation defrosting.
Further, in order to prevent wind cross, the wind-guiding device also comprises a wind door 3 and a shielding device 4, wherein the wind door 3 is arranged at the position of the wind-guiding duct 1 in an openable and closable manner; the shielding device 4 is disposed at the air return opening 402 and the air outlet 401 of the freezing air duct 400 in an openable and closable manner.
The shielding device 4 is used for opening or closing the air outlet 401 and the air return opening 402, the air door 3 is used for opening or closing the air guide duct 1, and the opening and closing states of the shielding device 4 and the air door 3 are opposite.
It should be further noted that the shielding device 4 may include a motor, a telescopic mechanism and a baffle, the baffle is connected to the motor through the telescopic mechanism, and when the motor operates, the baffle can be driven to stretch and retract relative to the mouth to open or close the mouth; of course, the shielding device 4 may further include an air cylinder and a baffle plate, the baffle plate is connected to the air cylinder, and the air cylinder drives the baffle plate to extend and retract when the air cylinder extends and retracts. The specific manner of the present invention is not particularly limited, as long as the air outlet and the air return opening can be opened or closed.
In this embodiment, the dehumidifying device includes a semiconductor cooling plate or a dehumidifying and moisture-blocking member.
Here, a switching valve is provided at a position where the defrosting flow path 2 is connected to each device, the position being where the refrigerant needs to be diverted, and the switching valve is basically formed by a three-way valve or a four-way valve.
The drainage air duct 1 is arranged at the position of the freezing air duct 400 close to the upper layer of the freezing chamber, namely the refrigerating chamber and the air door of the temperature-variable chamber or the front section of the refrigerating chamber and the air door of the temperature-variable chamber, and the dehumidifying device is arranged at the position of the refrigerating chamber return air duct 300 close to the lower layer of the freezing chamber, namely the rear section of the refrigerating chamber return air duct.
Further, the dehumidification moisture barrier may be a silica gel desiccant pack.
The refrigerator also comprises a shielding piece movably arranged in the air return duct 300 of the refrigerating chamber, and when the refrigerator is in a refrigerating mode, the shielding piece moves to a closed position to shield the dehumidification moisture barrier partially or completely; when the refrigerator is in the defrost mode, the shutter is moved to the open position to fully expose the dehumidification moisture barrier.
It should be noted here that the shielding member may have the same structure as the shielding device 4, but the difference is that when the shielding device 4 is in the closed position, if the shielding member completely shields the silica gel desiccant, the refrigerating chamber return air duct will not be blocked, and it is further necessary to supplement that the shielding member may be a box body installed in the refrigerating chamber return air duct, the silica gel desiccant is packed in the box body, and the top and bottom of the box body are provided with baffles which are opened during defrosting and closed during refrigerating.
As shown in fig. 1 and 2, fig. 1 is a structural view of a refrigerator having a sublimation defrosting function in a refrigerating state; fig. 2 is a structural view of a refrigerator having a sublimation defrosting function in a defrosting state; the invention provides a refrigeration device, which comprises a compressor 100, a condenser 800, a first capillary tube 900, an evaporator 200 and the defrosting module which are connected in sequence through a refrigerant flow path. Of course, the refrigeration equipment can also be refrigeration equipment such as a refrigerator.
When the dehumidifying device is a defrosting evaporator 7, the dehumidifying device further comprises a second capillary tube 6, and the second capillary tube 6 and the defrosting evaporator 7 are sequentially connected between the evaporator 200 and the compressor 100; the refrigeration system further comprises a cooperative refrigeration flow path 8, wherein the initial end of the cooperative refrigeration flow path 8 is connected to the outlet side of the evaporator 200, or is connected to the outlet side of the first capillary 900; the tail end is connected to the inlet side of the defrosting evaporator 7.
When the dehumidifying device is a defrosting evaporator 7, the refrigerator has three operation modes, namely a single refrigeration mode, a double refrigeration mode and an internal defrosting mode; when the dehumidifying device is a semiconductor refrigerating sheet or a dehumidifying and moisture-blocking piece, the refrigerator has two operation modes, namely a single refrigerating mode and an internal defrosting mode.
The refrigerator provided by the invention has a refrigeration mode and a defrosting mode (taking a dehumidifying device as an example of a defrosting evaporator), when in normal refrigeration, a refrigerant is compressed by a compressor and then enters a condenser for condensation, is throttled by a first capillary tube and then flows to the evaporator, is evaporated and absorbs heat in the evaporator to provide cold energy for a compartment, and finally returns to the compressor. At the moment, the shielding devices at the air outlet of the freezing air duct and the air outlet of the air return port are opened, the drainage air duct and the air door are closed, and the outlet air of the evaporator is normally sent into each chamber for refrigeration.
When the refrigerator reaches a defrosting condition, the refrigerator enters a defrosting mode, a refrigerant is compressed by a compressor and then enters an evaporator to heat the root of a frost layer, the humidity and the temperature of the root of the frost layer are sublimated after reaching the sublimation condition, the refrigerant is throttled by a second capillary tube and flows to a defrosting evaporator, the refrigerant is evaporated and absorbs heat in the defrosting evaporator, high-humidity air generated by sublimation of the frost layer is refrigerated and dehumidified, a low-humidity environment is provided for the root of the frost layer of the evaporator, and finally the refrigerant returns to the compressor, at the moment, a shielding device of an air outlet and an air return inlet of a freezing air channel is closed, the high-humidity air is prevented from entering a freezing chamber, frosting in the chamber, and the; the drainage air duct and the air door are opened, the freezing fan also works normally, air flows between the evaporator and the defrosting evaporator, and the sublimation defrosting process is more uniform and faster. The frost layer is sublimated from the root, and the frost layer on the evaporator can be integrally fallen off after the root frost layer is sublimated due to the action of gravity. When the defrosting evaporator is detected to reach the condition of exiting the defrosting, the refrigerator exits the defrosting mode and enters a normal refrigeration mode.
The refrigerator provided by the invention has a refrigeration mode and a defrosting mode (taking a dehumidifying device as a semiconductor refrigeration sheet or a dehumidifying and moisture-resisting piece as an example), in the normal refrigeration mode, a refrigerant is compressed by a compressor, enters a condenser for condensation, is throttled by a first capillary tube, flows to an evaporator, is evaporated and absorbs heat in the evaporator to provide cold energy for a compartment, and finally returns to the compressor. At the moment, the shielding devices of the air outlet and the air return inlet of the freezing air duct are opened, the drainage air duct and the air door are closed, and the outlet air of the evaporator is normally sent into each chamber for refrigeration. Preferably, when the semiconductor refrigerating sheet is selected as the dehumidifying device, the semiconductor refrigerating sheet can be opened during refrigeration, so that the refrigerating capacity and the refrigerating speed are improved, and the frosting capacity of the evaporator is reduced.
When the refrigerator reaches a defrosting condition, the refrigerator enters a defrosting mode, a refrigerant is compressed by a compressor and then enters an evaporator to heat the root of a frost layer, the humidity and the temperature of the root of the frost layer are sublimated after reaching the sublimation condition, the refrigerant is throttled by a first capillary tube and flows to a condenser to be evaporated and absorb heat in the condenser, and finally the refrigerant returns to the compressor. At the moment, the shielding devices of the air outlet and the air return inlet of the freezing air duct are closed, so that high-humidity air is prevented from entering the freezing chamber, frosting is formed in the chamber, and the temperature of the chamber is prevented from being influenced. Semiconductor refrigeration piece, dehumidification hinder the dehydrating unit of setting such as piece and open and dehumidify, dehumidify the humid air that the frost layer sublimation produced, provide the low humid environment for evaporimeter frost layer root sublimation. The drainage air duct and the air door are opened, the freezing fan also works normally, air flows between the evaporator and the dehumidifying device, and the sublimation defrosting process is more uniform and rapid. The frost layer is sublimated from the root, and the frost layer on the evaporator can be integrally fallen off after the root frost layer is sublimated due to the action of gravity.
When the defrosting evaporator is detected to reach the condition of exiting the defrosting, the refrigerator exits the defrosting mode and enters a normal refrigeration mode.
According to the control method of the refrigerator provided by the invention, when the frost is in a refrigerating mode, the air flow direction is as shown in figure 1, and when the refrigerator is in a defrosting mode, the air flow direction is as shown in figure 2; as shown in fig. 3, it is a system diagram of a refrigerator (in the state of refrigeration of the evaporator) that realizes the sublimation defrosting function by adding a defrosting evaporator, and the cooperative refrigeration flow path and the evaporator are connected in series; FIG. 4 is a diagram of a refrigerator system with sublimation defrosting by adding a defrosting evaporator (evaporator, defrosting evaporator cooling at the same time), and the cooperative cooling flow path is connected in series with the evaporator; FIG. 5 is a diagram of a refrigerator system with sublimation defrost by adding a defrost evaporator (defrost state) and a cooperative refrigeration flow path in series with the evaporator; FIG. 6 is a system diagram of a refrigerator for implementing a sublimation defrosting function by providing a semiconductor refrigerating sheet, a dehumidifying and moisture-blocking member, and other dehumidifying means; fig. 7 is a system diagram of a refrigerator in which a sublimation defrosting function is realized by adding a defrosting evaporator (evaporator, defrosting evaporator simultaneously cooling state), and a cooperative cooling flow path and the evaporator are connected in parallel.
When the system is cooling, as shown in fig. 3, the first solenoid valve 9 is on a-B, the second solenoid valve 10 is on a-C, the third solenoid valve 11 is on a-B, and the fourth solenoid valve 12 is on a-C. After being compressed in the compressor 100, the refrigerant enters the first electromagnetic valve A-B channel, is condensed in the condenser 800, is throttled at the first capillary tube 900, passes through the second electromagnetic valve A-C channel, is evaporated and absorbs heat in the evaporator to provide cold energy for the refrigerator, and finally returns to the compressor through the third electromagnetic valve A-B channel and the fourth electromagnetic valve A-C channel.
As shown in FIG. 4, when the evaporator and the defrosting evaporator need to refrigerate simultaneously, the first electromagnetic valve is connected with A-B, the second electromagnetic valve is connected with A-C, the third electromagnetic valve is connected with A-C, the fourth electromagnetic valve is connected with A-B, and the fifth electromagnetic valve is connected with A-B. The refrigerant is compressed in the compressor, enters the first electromagnetic valve A-B channel, is condensed in the condenser, is throttled at the first capillary tube, passes through the second electromagnetic valve A-C channel, is evaporated and absorbs heat in the evaporator to provide cold for the refrigerator, then enters the defrosting evaporator through the third electromagnetic valve A-C channel and the fifth electromagnetic valve A-B channel to be refrigerated, refrigerates the relatively high-temperature and high-humidity refrigerating chamber return air, reduces the temperature and the humidity of the refrigerating chamber return air, reduces the refrigeration load and the frosting amount of the evaporator, and can be switched back to the independent refrigeration mode of the evaporator when the defrosting evaporator needs defrosting, and defrosting is carried out by utilizing the refrigerating chamber return air with higher temperature. And finally, the refrigerant returns to the compressor through a fourth electromagnetic valve A-B channel.
As shown in FIG. 5, when the evaporator needs defrosting, the first solenoid valve is connected with A-C, the second solenoid valve is connected with A-B, the third solenoid valve is connected with A-D, the fourth solenoid valve is connected with A-B, and the fifth solenoid valve is connected with A-C. After being compressed in the compressor, the refrigerant enters the first electromagnetic valve A-C channel and the second electromagnetic valve A-C channel and is condensed in the evaporator, meanwhile, the hot refrigerant heats the root of the frost layer to provide sublimation latent heat and a certain temperature difference, then the refrigerant passes through the third electromagnetic valve A-D channel and is throttled at the second capillary tube, the throttled refrigerant passes through the A-C channel of the fifth electromagnetic valve 13 to evaporate and absorb heat in the evaporator to defrost high-humidity air generated by sublimation of the frost layer, and finally the refrigerant returns to the compressor through the fourth electromagnetic valve A-B channel.
When the dehumidifying device is provided with the semiconductor refrigerating sheet or the dehumidifying and moisture-blocking piece, the optional system design is shown in fig. 6, and the function of heating the root of the frost layer by using the heat refrigerant during sublimation defrosting is only needed. In the system in FIG. 6, during refrigeration, the first electromagnetic valve is communicated with A-B, the second electromagnetic valve is communicated with A-C, and the stop valve 14 is opened. After being compressed in the compressor, the refrigerant enters the first electromagnetic valve A-B channel and the second electromagnetic valve A-C channel, is condensed in the condenser, is throttled at the capillary tube, is evaporated and absorbs heat in the evaporator to provide cold for the refrigerator, and finally returns to the compressor through the stop valve. During defrosting, the first electromagnetic valve is communicated with the A-C, the second electromagnetic valve is communicated with the A-B, and the stop valve is closed. After being compressed in the compressor, the refrigerant enters the first electromagnetic valve A-C channel, is condensed in the evaporator to provide heat for the root of the frost layer, is throttled at the capillary tube, is evaporated in the condenser to absorb heat, and finally returns to the compressor through the second electromagnetic valve A-B channel.
When the dehumidifying device is a defrosting evaporator, the method comprises the following control steps:
step 200, when the refrigerator is in a refrigeration mode, controlling the air flow direction as shown in figure 1, controlling the shielding device to be opened, controlling the air door to be closed, enabling the refrigerated air to enter a freezing chamber, a temperature-changing chamber or a refrigerating chamber, and then returning to the evaporator through a refrigerating chamber air return duct, wherein the return air temperature is higher, the humidity is higher, the vapor in the return air is frosted at the evaporator 200, and the frost layer is gradually thickened after a period of refrigeration operation; when the refrigerator is in the defrosting mode, the shielding device is controlled to be closed, the air door is controlled to be opened, so that the air in the freezing air duct flows back into the air return duct of the refrigerating chamber through the air guide duct, the dehumidifying device is used for cooling and dehumidifying, the air flows to the direction shown in figure 2, the freezing fan keeps the running state, by changing the flow direction of the system refrigerant, the temperature of the root of the frost layer is increased by using the heat refrigerant, the sublimation latent heat required by the sublimation of the frost layer is provided with a certain temperature difference, under certain temperature and humidity conditions, the root of the frost layer is sublimated, high-humidity air generated by sublimation flows to the defrosting evaporator from the freezing fan, the drainage air duct, the air door and the refrigerating chamber return air duct, the high-humidity air is dehumidified at the high-humidity air, the dehumidified low-humidity air flows to the evaporator from the refrigerating chamber return air duct, defrosting is carried out in a circulating mode, the evaporator is continuously kept in a uniform low-humidity environment, and sublimation defrosting efficiency is improved;
300, when the refrigerator is in a refrigeration mode, the refrigerator further comprises a single refrigeration mode which realizes refrigeration only by operating an evaporator by controlling the switching valve to be opened and closed, a refrigerant is condensed by a condenser after being compressed in a compressor, then is throttled by a first capillary tube, and the throttled refrigerant is evaporated and absorbs heat in the evaporator to provide cold energy for a freezing chamber, a temperature changing chamber and a refrigerating chamber of the refrigerator and finally flows back to the compressor for circulation;
step 400, when the refrigerator is in a refrigeration mode, a double refrigeration mode that the evaporator and the defrosting evaporator refrigerate simultaneously in a series connection or parallel connection mode is realized by controlling the switching valve to be opened and closed; when the refrigerator operates in a series connection mode of double refrigeration modes, a refrigerant is condensed in a condenser after being compressed in a compressor, then is throttled by a first capillary tube, the throttled refrigerant is evaporated and absorbs heat in an evaporator to provide cold for a freezing chamber, a temperature changing chamber and a refrigerating chamber of the refrigerator, then enters a defrosting evaporator to refrigerate refrigerating return air with relatively high temperature and high humidity, reduces the return air temperature and humidity of the refrigerating chamber, and finally returns to the compressor for circulation; when the refrigerator operates in a parallel double-refrigeration mode, a refrigerant is condensed in a condenser after being compressed in a compressor, then is throttled by a first capillary tube, and part of the throttled refrigerant enters an evaporator to evaporate and absorb heat so as to provide cold for a freezing chamber, a temperature changing chamber and a refrigerating chamber of the refrigerator; one part of the air enters a defrosting evaporator to be evaporated, absorbed and refrigerated, the return air of the refrigerating chamber with relatively high temperature and high humidity is refrigerated, the return air temperature and the return air humidity of the refrigerating chamber are reduced, and the refrigerant absorbed by the two parts returns to the compressor for circulation;
500, when the refrigerator is in a defrosting mode, the switching valve is controlled to be opened and closed to realize communication among the compressor, the evaporator and the defrosting evaporator, a refrigerant is compressed by the compressor and then enters the evaporator to heat the root of a frost layer, air in a freezing air channel flows back into a return air channel of a refrigerating chamber through a drainage air channel, the return air realizes refrigeration and cooling under the action of evaporation and heat absorption of the defrosting evaporator, and when the cooled and dehumidified air enters the evaporator, a large humidity difference exists between the cooled and dehumidified air and the air at the root of the evaporator, so that the root humidity and the temperature of the frost layer are sublimated after reaching sublimation conditions; the refrigerant is throttled by a second capillary tube and flows to the defrosting evaporator, the refrigerant is evaporated and absorbs heat in the defrosting evaporator, and finally the refrigerant returns to the compressor;
when the dehumidifying device is a semiconductor refrigerating sheet or a dehumidifying and moisture-blocking piece, the method comprises the following control steps:
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in fig. 1 to facilitate the description of the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (13)
1. A defrosting module is characterized by comprising a dehumidifying device, a drainage air channel and a defrosting flow path; wherein:
the defrosting flow path is connected between the compressor and the evaporator;
the dehumidification device is arranged in the refrigerating chamber return air duct and is used for dehumidifying the return air of the refrigerating chamber;
the drainage air duct is arranged between the refrigerating chamber air return duct and the freezing air duct and used for introducing air in the freezing air duct into the refrigerating chamber air return duct during defrosting.
2. The defrost module of claim 1, further comprising a damper and a shield, the damper being openably and closably disposed at the draft duct; the shielding device can be arranged at the air return opening and the air outlet of the freezing air duct in an opening and closing mode, and the opening and closing states of the shielding device and the air door are opposite.
3. The defrost module of claim 1, wherein the dehumidification device includes a second capillary tube and a defrost evaporator connected in series by a defrost branch, the defrost branch connected in parallel with the return flow path between the compressor and the evaporator.
4. The defrost module of claim 3, further comprising a cooperative refrigeration flow path connected to the defrost evaporator, the start of the cooperative refrigeration flow path being connected to the evaporator in parallel or in series.
5. Defrost module according to claim 1, characterized in that the dehumidifying means comprise semiconductor cooling fins or dehumidifying moisture barriers.
6. The defrost module of claim 5, wherein the dehumidification moisture barrier is a silica gel desiccant packet.
7. The defrost module of claim 6, further comprising a shield movably disposed within the fresh food compartment return duct, the shield being movable to a closed position to partially or fully shield the dehumidification barrier when the refrigeration appliance is in the refrigeration mode; when the refrigeration appliance is in the defrost mode, the shutter is moved to the open position to fully expose the dehumidification moisture barrier.
8. The defrost module of claim 1, wherein the draft air duct is provided at a location of the freezing air duct near an upper floor of the freezing compartment, and the dehumidification device is provided at a location of the return air duct of the refrigerating compartment near a lower floor of the freezing compartment.
9. A refrigeration device, comprising a compressor, a condenser, a first capillary tube, an evaporator and the defrosting module as claimed in any one of claims 1 to 8, which are connected in sequence by a refrigerant flow path.
10. The refrigeration apparatus as claimed in claim 9, further comprising a second capillary tube when the dehumidifying device is a defrost evaporator, the second capillary tube and the defrost evaporator being connected in sequence between the evaporator and the compressor; the starting end of the cooperative refrigeration flow path is connected to the outlet side of the evaporator, or is connected to the outlet side of the first capillary tube; the tail end is connected to the inlet side of the defrosting evaporator.
11. The refrigeration appliance according to claim 10, wherein when the dehumidifying device is a defrost evaporator, the refrigeration appliance has three operation modes, a single refrigeration mode, a double refrigeration mode, and an internal defrost mode; when the dehumidifying device is a semiconductor refrigerating sheet or a dehumidifying and moisture-blocking piece, the refrigerating equipment has two operation modes, namely a single refrigerating mode and an internal defrosting mode.
12. The refrigeration appliance of claim 9 wherein the refrigeration appliance is a refrigerator.
13. A control method of a refrigerating apparatus as recited in any one of claims 9 to 12, characterized in that;
when the dehumidifying device is a defrosting evaporator, the method comprises the following control steps:
step 100, selecting a working mode, comprising: a refrigeration mode or a defrost mode;
200, when the refrigeration equipment is in a refrigeration mode, the refrigeration equipment further comprises a single refrigeration mode for realizing the operation refrigeration of only the evaporator by controlling the opening and closing of a switching valve, and a double refrigeration mode for realizing the simultaneous refrigeration of the evaporator and the defrosting evaporator in a serial or parallel mode;
step 300, when the refrigeration equipment is in a defrosting mode, the compressor, the evaporator and the defrosting evaporator are communicated by controlling the switching valve to be opened and closed;
when the dehumidifying device is a semiconductor refrigerating sheet or a dehumidifying and moisture-blocking piece, the method comprises the following control steps:
step 100, selecting a working mode, a single refrigeration mode or a defrosting mode;
step 200, when the refrigeration equipment is in a single refrigeration mode, controlling the shielding device to be opened, and controlling the air door to be closed, so that the refrigerated air enters a freezing chamber, a temperature changing chamber or a refrigerating chamber; when the refrigeration equipment is in a defrosting mode, the shielding device is controlled to be closed, and the air door is controlled to be opened, so that air in the freezing air duct flows back into the air return duct of the refrigerating chamber through the drainage air duct, and the dehumidification device is used for cooling and dehumidifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110672511.8A CN113375403A (en) | 2021-06-17 | 2021-06-17 | Defrosting module, refrigeration equipment and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110672511.8A CN113375403A (en) | 2021-06-17 | 2021-06-17 | Defrosting module, refrigeration equipment and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113375403A true CN113375403A (en) | 2021-09-10 |
Family
ID=77577430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110672511.8A Withdrawn CN113375403A (en) | 2021-06-17 | 2021-06-17 | Defrosting module, refrigeration equipment and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113375403A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899141A (en) * | 2021-09-30 | 2022-01-07 | 珠海格力电器股份有限公司 | Module for defrosting in advance, control method thereof and refrigeration equipment |
| CN115077173A (en) * | 2022-07-22 | 2022-09-20 | 珠海格力电器股份有限公司 | Demisting device, refrigeration equipment and demisting control method |
| WO2023061210A1 (en) * | 2021-10-11 | 2023-04-20 | 青岛海尔电冰箱有限公司 | Air-cooled refrigerator |
| CN116045599A (en) * | 2022-12-22 | 2023-05-02 | 珠海格力电器股份有限公司 | Dehumidification control method and device and low-temperature storage equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080074434A (en) * | 2007-02-09 | 2008-08-13 | 엘지전자 주식회사 | A refrigerator |
| CN106288593A (en) * | 2015-05-29 | 2017-01-04 | 青岛海尔智能技术研发有限公司 | Refrigerator |
| CN111520942A (en) * | 2020-05-06 | 2020-08-11 | 珠海格力电器股份有限公司 | Refrigerator with a door |
| CN212720445U (en) * | 2020-06-05 | 2021-03-16 | 珠海格力电器股份有限公司 | Air duct structure and refrigerator with same |
| CN112665286A (en) * | 2021-01-04 | 2021-04-16 | 珠海格力电器股份有限公司 | Refrigerator dehumidification and defrosting device, control method and refrigerator |
| CN215447048U (en) * | 2021-06-17 | 2022-01-07 | 珠海格力电器股份有限公司 | Defrosting module and refrigeration equipment with same |
-
2021
- 2021-06-17 CN CN202110672511.8A patent/CN113375403A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080074434A (en) * | 2007-02-09 | 2008-08-13 | 엘지전자 주식회사 | A refrigerator |
| CN106288593A (en) * | 2015-05-29 | 2017-01-04 | 青岛海尔智能技术研发有限公司 | Refrigerator |
| CN111520942A (en) * | 2020-05-06 | 2020-08-11 | 珠海格力电器股份有限公司 | Refrigerator with a door |
| CN212720445U (en) * | 2020-06-05 | 2021-03-16 | 珠海格力电器股份有限公司 | Air duct structure and refrigerator with same |
| CN112665286A (en) * | 2021-01-04 | 2021-04-16 | 珠海格力电器股份有限公司 | Refrigerator dehumidification and defrosting device, control method and refrigerator |
| CN215447048U (en) * | 2021-06-17 | 2022-01-07 | 珠海格力电器股份有限公司 | Defrosting module and refrigeration equipment with same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899141A (en) * | 2021-09-30 | 2022-01-07 | 珠海格力电器股份有限公司 | Module for defrosting in advance, control method thereof and refrigeration equipment |
| WO2023061210A1 (en) * | 2021-10-11 | 2023-04-20 | 青岛海尔电冰箱有限公司 | Air-cooled refrigerator |
| CN115077173A (en) * | 2022-07-22 | 2022-09-20 | 珠海格力电器股份有限公司 | Demisting device, refrigeration equipment and demisting control method |
| CN116045599A (en) * | 2022-12-22 | 2023-05-02 | 珠海格力电器股份有限公司 | Dehumidification control method and device and low-temperature storage equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215447048U (en) | Defrosting module and refrigeration equipment with same | |
| CN113375403A (en) | Defrosting module, refrigeration equipment and control method | |
| US10495368B2 (en) | Refrigerator and operation method of the same | |
| JP2002504661A (en) | Refrigerator equipped with a cooler in each of the refrigerator compartment and the freezer compartment | |
| CN109373674B (en) | Refrigerator with a door | |
| CA2651674A1 (en) | Refrigerator with select temperature compartment | |
| US11644230B2 (en) | Refrigerator | |
| RU2467264C2 (en) | Refrigerating device with moisture separator, and operating method of refrigerating device | |
| JP3452781B2 (en) | refrigerator | |
| CN109737662A (en) | A kind of horizontal frostless refrigeration system of refrigerator of compact and defrosting control method | |
| CN109373669B (en) | Refrigerator with a refrigerator body | |
| CN214701420U (en) | Sublimation defrosting system, refrigerating system and refrigerating equipment | |
| JP4206792B2 (en) | refrigerator | |
| JP3049425B2 (en) | Refrigerator with two evaporators | |
| JP2003287349A (en) | Humidity adjustable refrigerator | |
| CN115111868A (en) | Refrigerator with a door | |
| JP5916174B2 (en) | refrigerator | |
| CN113124599B (en) | Refrigerator and control method thereof | |
| CN109373670B (en) | Refrigerator with a door | |
| JP2000146400A (en) | Refrigerator | |
| JP5694897B2 (en) | refrigerator | |
| JP6886701B2 (en) | Dehumidifying blower | |
| CN113701445A (en) | Control method of refrigerating and freezing device | |
| CN219318778U (en) | Direct cooling type refrigerating equipment | |
| CN218672790U (en) | Direct cooling type refrigeration equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210910 |