CN202692580U - Refrigeration device - Google Patents

Refrigeration device Download PDF

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Publication number
CN202692580U
CN202692580U CN2012203785753U CN201220378575U CN202692580U CN 202692580 U CN202692580 U CN 202692580U CN 2012203785753 U CN2012203785753 U CN 2012203785753U CN 201220378575 U CN201220378575 U CN 201220378575U CN 202692580 U CN202692580 U CN 202692580U
Authority
CN
China
Prior art keywords
osculum
refrigerating appliance
air
appliance according
baffling section
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.)
Expired - Lifetime
Application number
CN2012203785753U
Other languages
Chinese (zh)
Inventor
柏玉发
胡春
黄也贵
李慧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Electrical Appliances Jiangsu Co Ltd
Original Assignee
BSH Electrical Appliances Jiangsu Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Electrical Appliances Jiangsu Co Ltd filed Critical BSH Electrical Appliances Jiangsu Co Ltd
Priority to CN2012203785753U priority Critical patent/CN202692580U/en
Application granted granted Critical
Publication of CN202692580U publication Critical patent/CN202692580U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14Collecting or removing condensed and defrost water; Drip trays
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00Details 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
    • F25D2317/06Details 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 with forced air circulation
    • F25D2317/067Details 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 with forced air circulation characterised by air ducts

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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 utility model relates to a refrigeration device (30), which comprises at least one storage room (31). An air circulation device (10) is arranged in the storage room (31), is used for sucking air from the storage room (31), guiding the air to pass through a cooling surface, and exhausting the air into the storage room (31), and is provided with a drain hole (20) for draining condensed water. According to the refrigeration device (30), an opening at the water inlet end (201) of the drain hole (20) is smaller than that of a water outlet end (202).

Description

Refrigerating appliance
[technical field]
The utility model is about a kind of household electrical appliance, particularly about a kind of refrigerating appliance that contains air circulation device.
[background technology]
In order to store more food, it is increasing that the refrigerating chamber of refrigerator is designed, and for direct cooling refrigerator, the refrigerating chamber volume is larger, and the temp. in refrigerating chamber gradient is also just larger.Relatively close cold air flows downward in refrigerating chamber, hot-air is gathered in the top of refrigerating chamber, this phenomenon can cause the refrigerating chamber upper area not reach being suitable for the temperature of best storage, opposite, the refrigerating chamber lower area might be because excessively cold, for example be lower than 0 degree centigrade, the danger that exists chilled goods to be damaged by frost.
In order to address the above problem, prior art promotes the Air Flow in the refrigerating chamber by increase air circulation device in refrigerating chamber, thereby reduces the thermograde in the refrigerating chamber.For example in a prior art, mention, in the refrigerating chamber of direct cooling refrigerator, air circulation device is set, the air channel structure of this air circulation device is as follows: air duct cover board is crossed by horizontal cover plate and vertical cover plate and forms, be provided with foremost wind passage mouth at horizontal cover plate, be provided with wind guide tank at vertical cover plate, the position of the general bottom of wind guide tank is provided with the osculum that condensed water flows out in the wind channel.
Vertically the wall of the wind guide tank on the cover plate is generally plastic member, and has certain thickness.When the osculum on the condensed water inflow wind guide tank, owing to be subjected to the impact of cold air, might build-uping ice of part and overlay on the hole wall of osculum, when the ice on overlaying on hole wall gets more and more, just might stop up osculum, the serious consequence that causes condensed water to discharge.Osculum on wind guide tank is iced obstruction, and that this osculum can be designed is larger a little, and this design can reduce the possibility that osculum is iced obstruction really, but but brings new problem.When discharging condensed water from the osculum of wind guide tank, also be accompanied by the discharge of part cold air, larger osculum just means that also having more cold air in the air duct cover board runs off, and is unfavorable for the raising of refrigerating efficiency.
[utility model content]
The purpose of this utility model is to provide a kind of refrigerating appliance, thereby can effectively solve the not high problem of refrigerating efficiency that refrigerating appliance storeroom internal cause osculum causes.
To achieve these goals, the utility model provides a kind of refrigerating appliance, comprise at least one storeroom, in described storeroom, be provided with air circulation device, described air circulation device is used for aspirating air in described storeroom, and enter again in the described storeroom after guiding described air by cooling surface, described air circulation device is provided with the osculum of discharging for condensed water, and it is characterized in that: the opening of described osculum water inlet end is less than the opening of water side.
Less opening has determined the number of dropouts of cold air in the opening of refrigerating appliance internal drainage hole water inlet end and the opening of water side, and the opening of water inlet end is designed to opening less than the water side, can reduce the loss of cold air; Because the opening of water inlet end is less than the opening of water side, flow to the condensed water of water inlet end opening under Action of Gravity Field, most of can directly falling without the sidewall between water inlet end and the water side, reduce the condensed water of the sidewall between water inlet end and the water side of flowing through, also because congealing into ice, low temperature overlays on risk on the sidewall with regard to having reduced condensed water when flowing through sidewall, thereby under the prerequisite that reduces the cold air loss, avoid the obstruction of osculum.
Other are combined separately or with other features and the feature that is considered to characteristic of the present utility model will be set forth in following additional claim.
Optionally, along described water inlet end to the direction of described water side, the opening of described osculum evenly increases, and opening evenly increases, and is conducive to process that condensed water flows out few sidewall of running between water inlet end and the water side of trying one's best.
Optionally, described osculum is isosceles trapezoid at the section of vertical direction, and namely the sidewall slope degree between water inlet end and the water side is identical.
Optionally, the base angle of described isosceles trapezoid is 45 degree, has reduced the loss of cold air when can realize preferably avoiding osculum to stop up.
Optionally, described air circulation device comprises the air duct cover board for the guiding Air Flow, be provided with deflection plate for the condensation water flow at described air duct cover board towards the wall of inner container of icebox, described osculum is arranged at the lowest part of described deflection plate, is conducive to the timely discharge of condensed water.
Optionally, described air duct cover board comprises the cover plate of a vertical direction at least, and described deflection plate is arranged on the wall of cover plate of described vertical direction.
Optionally, described deflection plate is comprised of the first baffling section and the second baffling section at least, and the gap between the mutual close end of described the first baffling section and described the second baffling section forms described osculum.
Optionally, described the first baffling section is identical with the second baffling section shape.
Optionally, described the first baffling section and the second baffling section be circular-arc, circular-arc deflection plate can be so that milder the flowing down of condensed water prevents that condensed water from splashing.
Optionally, described the first baffling section and the second baffling section are strip, and the deflection plate of strip can so that condensed water flow to osculum faster, reduce the temperature drop that produces in the process that flows.
Optionally, the length of the Length Ratio second baffling section of described the first baffling section is long, the position of osculum on the air duct cover board deflection plate can be set toward the position of the delivery port of outside draining according to refrigerating appliance inside, so that the position of osculum is over against the position of the inner delivery port toward outside draining of refrigerating appliance, the length of Length Ratio the second baffling section by designing the first baffling section can be relatively easy to realize.
Optionally, described deflection plate be shaped as two semi arches that are connected, described refrigerating appliance comprises two osculums, described osculum lays respectively at the lowest part of the deflection plate of described semi arch, two osculums are set in the air duct cover board, can accelerate the speed of draining, thereby further reduce the stifled risk of ice; Deflection plate adopts the structure of two semi arches, is conducive to guide wind to flow fast, improves refrigerating efficiency.
Optionally, described air duct cover board is crossed by a vertical cover plate and a horizontal cover plate and forms, the portal air stream of the orientation that is designed to discharge a door that is right against closed storage room of at least one air exhausting that is positioned at described horizontal cover plate, because the space temperature near door of storage room is higher, therefore the air exhausting clearancen is designed to the door over against storeroom, be conducive to reduce the temperature at this place, also reduced the temperature difference of compartment interior.
Optionally, described air exhausting portals and extends on the interior whole width of described storeroom, is conducive to the cold air uniformly dispersing, reduces the temperature difference in whole space in the storeroom.
In order to address the above problem, the utility model also provides a kind of refrigerating appliance, and described refrigerating appliance has at least one osculum, and the water inlet end opening of described osculum is less than the opening of water side.
Optionally, the direction along described water inlet end to described water side, the opening of described osculum evenly increases.
Structure of the present utility model and its other utility model purposes and beneficial effect will be in conjunction with the drawings and description of preferred embodiments and more becoming apparent.
[description of drawings]
The part of book and in order to providing further understanding of the present utility model as an illustration, the following drawings diagram specific embodiment of the present utility model, and be used for illustrating principle of the present utility model with specification.Wherein,
Fig. 1 is the structural representation of air duct cover board first embodiment of the utility model refrigerating appliance.
Fig. 2 is the vertical cover plate schematic diagram of air duct cover board among Fig. 1.
Fig. 3 is the vertical covering plate structure schematic diagram of air duct cover board second embodiment of the utility model refrigerating appliance.
Fig. 4 is the vertical covering plate structure schematic diagram of air duct cover board the 3rd embodiment of the utility model refrigerating appliance.
Fig. 5 is the vertical covering plate structure schematic diagram of air duct cover board the 4th embodiment of the utility model refrigerating appliance.
[specific embodiment]
To be described in detail exemplary embodiments of the present utility model now, its example is shown in the drawings, and identical Reference numeral represents identical original paper in all accompanying drawings.Below will be by describing embodiment with reference to the accompanying drawings with explanation the utility model.
Please refer to Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 are the first embodiment of the present utility model, Fig. 1 is the air duct cover board 10 that a cross section is L-type, namely this air duct cover board 10 is crossed by horizontal cover plate 11 and vertical cover plate 12 and forms, air duct cover board 10 is generally positioned at the storeroom of refrigerating appliance as the part of air circulation device, especially the refrigerating chamber of refrigerator or temperature-changing chamber, for increasing indoor cold air flow, reduce the temperature difference between the indoor regional.Horizontal cover plate 11 and vertically cover plate 12, be fixed on the inner bag corresponding with cover plate in the refrigerator such as screw etc. by jockey 14.Be provided with assembly cavity 16, fan and the air duct cover board 10 formation air circulation devices of an assembling fan at vertical cover plate 12.After opening fan, fan aspirates air in storeroom, and enter again in the storeroom after guiding air by cooling surface, produce condensed water at air by meeting in the process of cooling surface, therefore, be provided with the osculum 20 of discharging for condensed water at air circulation device, condensed water in the air circulation device is through the guiding of deflection plate 15, after osculum 20 discharges, flow to the guiding gutter that is arranged on the inner container of icebox, guiding gutter is provided with delivery port and is connected in the outlet pipe of delivery port, thereby condensed water is discharged in refrigerator.
The air direction as shown by the arrows in Figure 1 that fan aspirates in the storeroom flows, after air flows out from assembly cavity 16, by the stopper 13 that is located on the air duct cover board 10, the passage that the deflection plate 15 of circular arc and the inwall of storeroom limit is introduced the sidewall 22 by air duct cover board 10 with air, the passage that makes progress that the deflection plate 15 of circular arc and the inwall of storeroom limit, passage upwards and by horizontal cover plate 11, the passage that the inwall of storeroom limits links to each other, be provided with air exhausting in the end of horizontal cover plate 11 and portal 18, air exhausting 18 doors that are right against closed storage room that portal, because the space temperature near door of storage room is higher, therefore 18 doors that are designed to over against storeroom portal air exhausting, be conducive to reduce the temperature at this place, also reduced the temperature difference of compartment interior.In the present embodiment, air exhausting portals on the 18 whole width that extend in the storeroom, is conducive to the cold air uniformly dispersing, reduces the temperature difference in the storeroom.
Deflection plate 15 is shaped as two semi arches that are connected in the present embodiment, the air that the projection 23 of junction will flow out from assembly cavity 16 roughly evenly is divided into two parts, from passage separately, flow out respectively, lowest part at the deflection plate 15 of each semi arch is equipped with osculum 20, air is divided into two parts, be conducive to flow fast, improved refrigerating efficiency.
Condensed water flows out from osculum 20, because near cooling surface, so condensed water might congeal into ice, thereby stops up osculum 20, can to cause more cold air to run off and in order preventing from stopping up osculum 20 large method is done in osculum 20 apertures, to reduce the effect of cold wind circulation.In order to address this problem, present embodiment provides a kind of osculum 20, as shown in Figure 2, the opening of osculum 20 water inlet ends 201 is designed to opening less than water side 202, because less opening has determined the number of dropouts of cold air in the opening of osculum 20 water inlet ends 201 and the opening of water side 202, the opening of water inlet end 201 is designed to opening less than water side 202, can reduces the loss of cold air; Because the opening of water inlet end 201 is less than the opening of water side 202, flow to the condensed water of water inlet end 201 openings under Action of Gravity Field, most of can directly falling without the sidewall 203 between water inlet end 201 and the water side 202, reduce the condensed water of the sidewall 203 between water inlet end 201 and the water side 202 of flowing through, also when flowing through sidewall 203, overlay on risk sidewall on because low temperature congeals into ice with regard to having reduced condensed water.Preferred embodiment is the direction along described water inlet end 201 to described water side 202, and the opening of described osculum 20 evenly increases; Another embodiment, osculum 20 is isosceles trapezoid at the section of vertical direction; The base angle of above-mentioned isosceles trapezoid can be designed as 45 degree, has reduced the loss of cold air when can realize preferably avoiding osculum 20 to stop up.
Fig. 3 is the structural representation of the second embodiment of the present utility model, the deflection plate 15 of the second embodiment is comprised of the first baffling section 251 and the second baffling section 252 at least, gap between the mutual close end of the first baffling section 251 and the second baffling section 252 forms an osculum 20, the opening of these osculum 20 water inlet ends 201 has reduced the loss of cold air less than the opening of water side 202 when also can realize avoiding osculum 20 to stop up.In the present embodiment, the first baffling section 251 is identical with the second baffling section 252 shapes, and being circular-arc, circular-arc deflection plate 15 can be so that milder the flowing down of condensed water prevents that condensed water from splashing.Than the first embodiment, this embodiment only has an osculum 20, owing to adopted the opening of osculum 20 water inlet ends 201 less than the design of the opening of water side 202, therefore can avoid equally osculum 20 to be blocked, owing to only have an osculum 20, so the number of dropouts of cold air is less.But the shortcoming of this embodiment is because air is not shunted, so the flow efficiency of air is lower than the first embodiment.
When flowing on the condensed water circular-arc deflection plate 15 in a second embodiment, because circular-arc deflection plate 15 gradients are little, therefore the mobile speed of condensed water is slower, slower flow velocity means that condensed water is elongated in the time that deflection plate 15 stops, the temperature of condensed water reduces more, and the risk that is congealed into ice is arranged.Fig. 4 is the structural representation of the 3rd embodiment of the present utility model, and than the 3rd embodiment, by the circular-arc strip that makes into, other parts comprise that the shape of osculum 20 is all less than changing with the first baffling section and the second baffling section shape.With respect to the second embodiment, the deflection plate 15 of strip can be so that condensed water becomes faster in the first baffling section and the second baffling section 35 mobile speed, thereby the time in the first baffling section 351 and 352 stops of the second baffling section is shorter, it is also less that temperature reduces, and further reduces the possibility that condensed water condenses.
Fig. 5 is the structural representation of the 4th embodiment of the present utility model, the Design of length one-tenth of the first baffling section 151 and the different length of length of the second baffling section 152, so that osculum 20 is directly aimed at the delivery port on the guiding gutter that is arranged on the inner container of icebox, discharge refrigerator by the outlet pipe that links to each other with delivery port, reduce the time that condensed water stops in refrigerator, also reduced the stifled risk of ice.

Claims (16)

1. a refrigerating appliance (30), comprise at least one storeroom (31), in described storeroom (31), be provided with air circulation device (10), described air circulation device (10) is used for aspirating air in described storeroom (31), and enter again in the described storeroom (31) after guiding described air by cooling surface, described air circulation device (10) is provided with the osculum (20) of discharging for condensed water, and it is characterized in that: the opening of described osculum (20) water inlet end (201) is less than the opening of water side (202).
2. refrigerating appliance according to claim 1 (30) is characterized in that: the direction along described water inlet end (201) to described water side (202), the opening of described osculum (20) evenly increases.
3. refrigerating appliance according to claim 1 and 2 (30), it is characterized in that: described osculum (20) is isosceles trapezoid at the section of vertical direction.
4. refrigerating appliance according to claim 3 (30) is characterized in that: the base angle of described isosceles trapezoid is 45 degree.
5. refrigerating appliance according to claim 1 (30), it is characterized in that: described air circulation device (10) comprises the air duct cover board (12 for the guiding Air Flow, 11), at described air duct cover board (12,11) wall towards inner container of icebox is provided with the deflection plate (15) that supplies the condensation water flow, and described osculum (20) is arranged at the lowest part of described deflection plate (15).
6. refrigerating appliance according to claim 5 (30), it is characterized in that: described air duct cover board (12,11) comprise at least the cover plate (12) of a vertical direction, described deflection plate (15) is arranged on the wall of cover plate (12) of described vertical direction.
7. refrigerating appliance according to claim 6 (30), it is characterized in that: described deflection plate (15) is comprised of the first baffling section (35,151) and the second baffling section (35,152) at least, and the gap between the mutual close end of described the first baffling section (35,151) and described the second baffling section (35,152) forms described osculum (20).
8. refrigerating appliance according to claim 7 (30), it is characterized in that: described the first baffling section (35,151) is identical with the second baffling section (35,152) shape.
9. according to claim 7 or 8 described refrigerating appliances (30), it is characterized in that: described the first baffling section (35,151) and the second baffling section (35,152) are circular-arc.
10. according to claim 7 or 8 described refrigerating appliances (30), it is characterized in that: described the first baffling section (35,151) and the second baffling section (35,152) are strip.
11. refrigerating appliance according to claim 7 (30) is characterized in that: the length of the Length Ratio second baffling section (35,152) of described the first baffling section (35,151) is long.
12. refrigerating appliance according to claim 5 (30), it is characterized in that: described deflection plate (15) be shaped as two semi arches that are connected, described refrigerating appliance (30) comprises two osculums (20), and described osculum (20) lays respectively at the lowest part of the deflection plate (15) of described semi arch.
13. refrigerating appliance according to claim 5 (30), it is characterized in that: described air duct cover board (12,11) crossed by a vertical cover plate (12) and a horizontal cover plate (11) and form, at least one air exhausting that is positioned at described horizontal cover plate portal (18) be designed to discharge the air stream of the orientation of a door that is right against closed storage room (31).
14. refrigerating appliance according to claim 10 (30) is characterized in that: described air exhausting portal (18) extend on the whole width in the described storeroom (31).
15. a refrigerating appliance (30), described refrigerating appliance (30) has at least one osculum (20), it is characterized in that: water inlet end (201) opening of described osculum (20) is less than the opening of water side (202).
16. refrigerating appliance according to claim 15 (30) is characterized in that: the direction along described water inlet end (201) to described water side (202), the opening of described osculum (20) evenly increases.
CN2012203785753U 2012-07-27 2012-07-27 Refrigeration device Expired - Lifetime CN202692580U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012203785753U CN202692580U (en) 2012-07-27 2012-07-27 Refrigeration device

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Application Number Priority Date Filing Date Title
CN2012203785753U CN202692580U (en) 2012-07-27 2012-07-27 Refrigeration device

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CN202692580U true CN202692580U (en) 2013-01-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105180561A (en) * 2014-06-03 2015-12-23 博西华电器(江苏)有限公司 Refrigeration appliance with air channel cover plate and assembling method thereof
CN106839600A (en) * 2017-01-22 2017-06-13 合肥华凌股份有限公司 Air channel panel for refrigerator and the refrigerator with it
CN106885425A (en) * 2017-02-15 2017-06-23 美的集团股份有限公司 Ducting assembly and refrigerator
EP3290838A4 (en) * 2015-04-30 2018-12-05 Hefei Midea Refrigerator Co., Ltd. Air channel assembly and refrigerator having same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105180561A (en) * 2014-06-03 2015-12-23 博西华电器(江苏)有限公司 Refrigeration appliance with air channel cover plate and assembling method thereof
EP3290838A4 (en) * 2015-04-30 2018-12-05 Hefei Midea Refrigerator Co., Ltd. Air channel assembly and refrigerator having same
US10876782B2 (en) 2015-04-30 2020-12-29 Hefei Midea Refrigerator Co., Ltd. Air channel assembly and refrigerator having same
CN106839600A (en) * 2017-01-22 2017-06-13 合肥华凌股份有限公司 Air channel panel for refrigerator and the refrigerator with it
CN106885425A (en) * 2017-02-15 2017-06-23 美的集团股份有限公司 Ducting assembly and refrigerator
US10948228B2 (en) 2017-02-15 2021-03-16 Midea Group Co., Ltd. Air duct assembly and refrigerator

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Granted publication date: 20130123