WO2023067948A1 - Réfrigérateur - Google Patents

Réfrigérateur Download PDF

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Publication number
WO2023067948A1
WO2023067948A1 PCT/JP2022/034112 JP2022034112W WO2023067948A1 WO 2023067948 A1 WO2023067948 A1 WO 2023067948A1 JP 2022034112 W JP2022034112 W JP 2022034112W WO 2023067948 A1 WO2023067948 A1 WO 2023067948A1
Authority
WO
WIPO (PCT)
Prior art keywords
blower fan
opening
refrigerator
compartment
chamber
Prior art date
Application number
PCT/JP2022/034112
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English (en)
Japanese (ja)
Inventor
豊志 上迫
アジャイ デブ プラパダティール
サギッシュ サチャシーラン
ベルサミー ゴパル
ディナカラン ベル
ナンジュダッパ キラン コリチケレ
ジャナルデャナン プラモス カラティール
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2023067948A1 publication Critical patent/WO2023067948A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation

Definitions

  • This disclosure relates to refrigerators.
  • Patent Document 1 discloses a refrigerator body having an outer box and an inner box, a refrigerator compartment provided in the upper part of the refrigerator body, a vegetable compartment provided in the lower part of the refrigerator body, the vegetable compartment and the refrigerator. a freezer compartment provided between the freezer compartment, a storage compartment back member provided on the back surface of the freezer compartment, a cooler cover provided behind the storage compartment back member, the cooler cover and the inner a cooler chamber provided between the box, a cooler provided in the cooler chamber, a defrosting heater provided below the cooler, and the storage chamber back member provided below the A refrigerator is disclosed having a freezer compartment return opening communicating between the freezer compartment and the cooler compartment.
  • the present disclosure provides a refrigerator that can achieve rapid cooling with cool air with reduced pressure loss.
  • a refrigerator includes at least a first storage chamber and a second storage chamber, is arranged behind the first storage chamber, and can blow cold air to the first storage chamber and the second storage chamber.
  • the refrigerator according to the present disclosure can send cold air inside the fan casing of the blower fan directly into the rapid cooling chamber. Therefore, rapid cooling can be achieved with cool air with reduced pressure loss.
  • FIG. 1 is a vertical cross-sectional view of a refrigerator according to Embodiment 1.
  • FIG. 2 is a rear view showing a cooling chamber and ducts according to Embodiment 1;
  • FIG. 3 is a rear view showing the blower fan portion according to Embodiment 1 together with the peripheral configuration;
  • FIG. 4 is a cross-sectional view showing a blower fan portion according to Embodiment 1.
  • FIG. 5 is a rear view of the blower fan portion according to the first embodiment, viewed from the cooling chamber side;
  • FIG. 6 is a front view of the blower fan portion according to Embodiment 1, viewed from the freezer compartment side;
  • FIG. 7 is a rear view seen from the cooling chamber side showing the first partition plate in Embodiment 1.
  • FIG. 1 is a vertical cross-sectional view of a refrigerator according to Embodiment 1.
  • FIG. 2 is a rear view showing a cooling chamber and ducts according to Embodiment 1
  • FIG. 3 is a rear
  • FIG. 8 is an exploded perspective view of the first partition plate and the blower fan according to Embodiment 1 as viewed from the cooling chamber side;
  • FIG. 9 is an exploded perspective view of the first partition plate and the second partition plate portion in Embodiment 1 as viewed from the cooling chamber side;
  • FIG. 10 is an exploded perspective view of the first partition plate and the second partition plate portion in Embodiment 1 as seen from the freezer compartment side;
  • FIG. 8 is an exploded perspective view of the first partition plate and the blower fan according to Embodiment 1 as viewed from the cooling chamber side;
  • FIG. 9 is an exploded perspective view of the first partition plate and the second partition plate portion in Embodiment 1 as viewed from the cooling chamber side;
  • FIG. 10 is an exploded perspective view of the first partition plate and the second partition plate portion in Embodiment 1 as seen from the freezer compartment side;
  • the conventional technique tends to require a long path from the blower fan to supply cool air to each room, which is disadvantageous in reducing the pressure loss of the cool air.
  • rapid cooling requires cold air to be supplied at high static pressure. Therefore, the present disclosure provides a refrigerator capable of rapidly cooling with cold air with reduced pressure loss by directly supplying cool air in the fan casing of the blower fan to the quick cooling chamber.
  • FIG. 1 is a longitudinal sectional view of a refrigerator according to Embodiment 1.
  • FIG. 2 is a rear view showing cooling chambers and ducts.
  • FIG. 3 is a rear view of the blower fan portion together with the peripheral structure as viewed from the cooling chamber side.
  • FIG. 4 is a sectional view showing the blower fan portion.
  • FIG. 5 is a rear view of the blower fan portion viewed from the cooling chamber side.
  • FIG. 6 is a front view of the blower fan portion viewed from the freezer compartment side.
  • FIG. 7 is a rear view of the first partition plate viewed from the cooling chamber side.
  • FIG. 8 is an exploded perspective view of the first partition plate and the blower fan as seen from the cooling chamber side.
  • FIG. 9 is an exploded perspective view of the first partition plate and the second partition plate as viewed from the cooling chamber side.
  • FIG. 10 is an exploded perspective view of the first partition plate and the second partition plate as viewed from the freezer compartment side.
  • a refrigerator 10 has a box-shaped housing 11 with an open front. Above the housing 11, a refrigerating chamber 12 of about 2° C. to 4° C. is formed as a second storage chamber, and below the housing 11, a freezing chamber 13 of about ⁇ 18° C. is formed as a first storage chamber. is formed. Between the refrigerator compartment 12 and the freezer compartment 13, a low temperature compartment 60 of about -5°C to about 1°C is formed as a third storage compartment.
  • the refrigerator 10 is provided with a side-opening door 14 that can be freely opened and closed at the front opening of the refrigerating compartment 12 .
  • a side opening type door 61 is provided at the front opening of the freezer compartment 13 so as to be freely opened and closed, and a drawer case 15 for storing food is provided inside.
  • a drawer-type door 62 is provided at the front opening of the low-temperature chamber 60 so as to be openable and closable.
  • a cooling chamber 20 is provided on the back side of the freezer compartment 13 of the refrigerator 10 .
  • a duct 21 located on the back side of the refrigerator compartment 12 and communicating in the vertical direction is connected to the upper part of the cooling compartment 20 .
  • the duct 21 is provided with a refrigerating outlet (not shown) that communicates with the refrigerating compartment 12 .
  • a heat insulating wall 64 is provided between the freezer compartment 13 and the low temperature compartment 60 .
  • a cold air passage 64 a is formed in the heat insulating wall 64 to communicate the cooling chamber 20 and the duct 21 . Thus, cold air generated in the cooling chamber 20 is introduced into the duct 21 through the cold air passage 64a.
  • the cold air passage 64a is provided with twin dampers 65 for adjusting the amount of cold air to the refrigerator compartment 12 and the low temperature compartment 60.
  • the twin damper 65 includes a low-temperature chamber damper 65a as a third storage chamber damper and a refrigerating chamber damper 65b as a first storage chamber damper, which are arranged adjacent to each other in the lateral width direction of the refrigerator 10.
  • the low-temperature chamber damper 65a and the refrigerating chamber damper 65b are controlled according to the room temperatures of the low-temperature chamber 60 and the refrigerating chamber 12, respectively, and perform the opening and closing operations of the dampers independently, so that the low-temperature chamber 60 and the refrigerating chamber 12 are controlled. Adjust the amount of cold air.
  • a first partition plate 30 is provided on the front side of the cooling chamber 20 .
  • a second partition plate 40 is provided on the back side of the freezer compartment 13 .
  • a cool air passage 41 is formed between the first partition plate 30 and the second partition plate 40 .
  • An upper portion of the first partition plate 30 is formed with an inclined surface 31 that is inclined away from the second partition plate 40 as it goes upward.
  • a blower fan 32 is attached to the rear side of the inclined surface 31 .
  • the first partition plate 30 and the second partition plate 40 form a partition wall 17 that partitions between the freezer compartment 13 and the blower fan 32 .
  • the blower fan 32 is a fan classified as one of blower fans.
  • Axial fans also exist in the blower fan.
  • an axial fan has a rotating blade attached to the center of a frame, sucks air from the front of the rotating blade, and blows the air backward.
  • Conventional refrigerators often use axial fans to circulate cool air.
  • the blower fan 32 includes a fan unit 34 having rotating blades 33 and a fan casing 35 covering the rotating blades 33, sucks air from the front of the rotating blades 33, 5 corresponding to the upper part).
  • the fan casing 35 is formed into a casing having a shape along an involute curve with the rotation center C1 of the rotating blades 33 as a reference, in other words, formed into a substantially spiral casing.
  • blower fan 32 tends to obtain higher static pressure than an axial fan of similar size.
  • the number of rotating blades 33 of the blower fan 32 is generally larger than the number of rotating blades of the axial fan, this also makes it easier to obtain a high static pressure.
  • the fan casing 35 is formed in a substantially spiral shape with a gradually increasing distance from the center of rotation C1 in the clockwise direction.
  • a second opening 36 is formed at the top of the fan casing 35 to communicate with the lower end of the cool air passage 64a.
  • a cool air intake port 37 for taking cool air from the cooling chamber 20 into the fan unit 34 is formed in the central portion of the fan casing 35 facing the rotating shaft of the blower fan 32 .
  • the fan casing 35 expands from its upper portion toward both sides of the fan casing 35 and connects to the connecting portion 70 through the second opening 36 .
  • the connecting portion 70 constitutes a cold air passage leading to the low temperature compartment damper 65a and the cold storage compartment damper 65b.
  • the low-temperature chamber damper 65 a is arranged at a position corresponding to the downstream outer peripheral side of the fan casing 35
  • the refrigerating chamber damper 65 b is arranged at a position corresponding to the downstream inner peripheral side of the fan casing 35 .
  • the airflow flowing on the downstream outer peripheral side of the fan casing 35 is supplied to the low temperature chamber 60 via the low temperature chamber damper 65a and flows on the downstream inner peripheral side of the fan casing 35.
  • the airflow is supplied to the refrigerator compartment 12 via the refrigerator compartment damper 65b.
  • An evaporator 22 is installed below the blower fan 32 in the cooling chamber 20 .
  • a compressor 23 is arranged in the rear upper portion of the refrigerator compartment 12 .
  • the compressor 23, the condenser (not shown), the expansion mechanism, and the evaporator 22 are connected by refrigerant pipes to form a refrigeration cycle.
  • the evaporator 22 causes heat exchange between the refrigerant and the internal air of the cooling chamber 20 to generate cool air inside the cooling chamber 20 .
  • first openings 38 are formed along the fan casing 35 at positions corresponding to the fan casing 35 of the first partition plate 30. ing.
  • the first openings 38a to 38c are shaped along an arc with the center of rotation C1 as a reference, and three of them are formed in this embodiment.
  • the first opening 38a, the first opening 38b, and the first opening 38c are formed in this order from the upstream side of the airflow by the blower fan 32.
  • the first openings 38a to 38c are separately described, they are referred to as the first upstream opening 38a, the first midstream opening 38b, and the first downstream opening 38c.
  • the opening areas of the first upstream opening 38a, the first midstream opening 38b, and the first downstream opening 38c are formed such that the opening widths thereof gradually increase from the upstream side toward the downstream side of the airflow. ing.
  • the opening areas of the first upstream opening 38a, the first midstream opening 38b, and the first downstream opening 38c are formed so as to increase sequentially from the upstream side. Thereby, the air volume to the freezer compartment 13 can be ensured and cooling can be performed efficiently. It should be noted that at least only the upstream side first opening 38a may be gradually increased as long as the air volume can be secured.
  • a fan attachment portion 39 is provided between the three first openings 38a-38c for attaching the fan unit 34 to the first partition plate 30.
  • a concave portion 39a is formed in each of the fan mounting portions 39 .
  • the fan unit 34 is formed with three fan support portions 34a projecting outward at equal angular intervals (120-degree intervals in this embodiment).
  • the fan support portions 34a have anti-vibration rubbers and are fixed to recesses 39a formed in the first partition plate 30 via the anti-vibration rubbers.
  • the fan unit 34 is elastically supported by the first partition plate 30 at three points.
  • the rotation axis L1 (Fig. 4) of the blower fan 32 is inclined.
  • the blower fan 32 blows the cool air forward and upward from the first opening 38, thereby facilitating convection of the cool air.
  • the second partition plate 40 is provided with a molded heat insulating material 50 made of, for example, polystyrene foam, in close contact with the second partition plate 40 .
  • the second partition plate 40 and the molded heat insulating material 50 are formed with three discharge ports 42 and 51, respectively, at positions corresponding to the first openings 38 of the first partition plate 30.
  • These discharge ports 42 and 51 are arranged so that at least a part thereof overlaps with the first opening 38 when viewed from the front.
  • a plurality of (three in the present embodiment) second outlets 43 and 52 are formed below the outlets 42 and 51 of the second partition plate 40 and the molded heat insulating material 50 .
  • the second discharge ports 43 and 52 communicate the freezer compartment 13 and the cold air passage 41 .
  • a disk-shaped rotary disk 44 is rotatably attached to the discharge port 42 portion of the second partition plate 40 to block each discharge port 42 .
  • a disk opening 45 having substantially the same shape as the ejection port 42 is formed in the rotary disk 44 so as to correspond to the ejection port 42 .
  • An operation knob 46 is provided at the center of the rotary disk 44 , and the rotary disk 44 can be rotated by operating the operation knob 46 .
  • the rotating disk 44 is positioned so that the discharge port 42 and the disk opening 45 are aligned, the cool air from the cooling chamber 20 flows directly into the freezing chamber 13 through the first opening 38 . Further, by rotating the rotating disk 44 and shifting the positions of the discharge port 42 and the disk opening 45 to reduce the opening area, it is possible to reduce the amount of cool air flowing in from the first opening 38 . Become.
  • a rapid cooling chamber is provided on the opposite side of the blower fan 32 with the openings (the first opening 38 and the discharge ports 42 and 51) passing through the partition wall 17 interposed therebetween.
  • a compartmentalized container 18 is provided. As shown in FIG. 1, the container 18 is formed in a size and shape that can be placed in the space above the drawer case 15 in the freezer compartment 13 . More specifically, as shown in FIG. 10 , the container 18 is formed in a polygonal (quadrangular in this embodiment) tubular shape extending in the front-rear direction of the refrigerator 10 . The container 18 surrounds all the outlets 42 of the second partition plate 40 when viewed from the front of the refrigerator, and the cold air blown out from the outlets 42 directly flows into the container 18 .
  • the container 18 Since the container 18 has a cylindrical shape extending in the front-rear direction of the refrigerator 10, it is possible to access the operation knob 46 of the rotating disk 44 from the front of the container 18. When the container 18 is removed, the operation knob 46 allows easy access. By operating the operating knob 46, the amount of cool air flowing into the container 18 can be adjusted.
  • a drawer case 15 is provided on the bottom surface of the freezer compartment 13 so that it can be drawn out in the front-rear direction of the refrigerator 10 , and a shelf board 19 is provided on the drawer case 15 .
  • the container 18 is provided in the space between the shelf board 19 and the ceiling of the freezer compartment 13 . Therefore, the cold air that has flowed in from the first opening 38 flows into the container 18 and then flows out from the front opening of the container 18 or the like, thereby cooling the shelf plate 19 and the inner space of the drawer case 15 .
  • the container 18 is made of a metal plate such as an aluminum alloy, and can contain food to be cooled. Foods are, for example, ingredients such as vegetables, meat, and fish, and processed foods such as frozen foods. By making the container 18 made of metal with high thermal conductivity, the cold air directly flowing from the fan casing 35 of the blower fan 32 can efficiently cool the container 18 and the inside of the container 18 .
  • the entire inner surface of the container 18 or the bottom surface of the container 18 is made of metal.
  • the part should be made of metal.
  • the container 18 may be made of a material other than a metal material, such as a resin material, as long as the inside of the container 18 can be sufficiently cooled.
  • the shape of the container 18 is not limited to a cylindrical shape with an open front surface, and may be formed in other shapes.
  • the compressor 23 is driven to circulate the refrigerant in the refrigerant circuit, and the evaporator 22 exchanges heat with the internal air of the cooling chamber 20 to generate cool air.
  • the blower fan 32 By driving the blower fan 32 , cool air inside the cooling chamber 20 is taken in through the cool air intake port 37 and blown out to the fan casing 35 . A part of the cold air blown out to the fan casing 35 is blown toward the duct 21 from the second opening 36, the air volume is controlled by the refrigerating chamber damper 65b of the twin damper 65, and the refrigerating chamber 12 is cooled.
  • the low-temperature chamber 60 is cooled by controlling the air volume with the low-temperature chamber damper 65a.
  • the airflow blown out from the fan casing 35 flows relatively more toward the low temperature chamber damper 65a due to centrifugal force, and the air volume to the low temperature chamber damper 65a is greater than that to the refrigerator chamber damper 65b.
  • the cooling efficiency in the low temperature room 60 can be improved.
  • part of the cold air blown out to the fan casing 35 is sent to the cold air passage 41 through the first opening 38 .
  • a part of the cold air sent to the cold air passage 41 is sent directly into the container 18 from the discharge ports 42 and 51 of the second partition plate 40 and the molded heat insulating material 50 .
  • the cold air sent into the container 18 is discharged from the front opening of the container 18 and sent to the shelf plate 19 in the freezer compartment 13 and the inner space of the drawer case 15 .
  • the remainder of the cold air sent to the cold air passage 41 is sent to the inner space of the drawer case 15 from the second outlets 43 and 52 to cool the inner space of the drawer case 15 and the like.
  • the first opening 38 and the discharge ports 42 and 51 are arranged so that at least a portion thereof overlaps when viewed from the front. , allowing vessel 18 to function as a rapid cooling chamber.
  • the rotating shaft L1 of the blower fan 32 is arranged at an angle, the cold air hits the inner surface of the container 18, and the cold air flows over the entire inside of the container 18, so that the effect of suppressing the unevenness of the temperature inside the container 18 can be expected.
  • other spaces in the freezer compartment 13 are cooled by the cold air flowing out of the container 18 and the cold air from the second discharge ports 43 and 52 .
  • the refrigerator 10 of the present embodiment includes at least the freezer compartment 13 (first storage compartment) and the refrigerating compartment 12 (second storage compartment).
  • a blower fan 32 capable of blowing cool air to the chamber 13 and the refrigerator chamber 12 and a partition wall 17 partitioning the freezer chamber 13 and the blower fan 32 are provided.
  • the partition wall 17 has openings (the first opening 38 and discharge ports 42 and 51) that communicate with the inside of the fan casing 35 of the blower fan 32.
  • the openings (the first opening 38 and the discharge ports 42 and 51) provided in the partition wall 17 are formed along an arc based on the rotation center C1 of the blower fan 32, the blower fan 32 The wind flowing radially due to the rotation of the fan can be smoothly discharged to the outside of the fan casing 35. - ⁇ Therefore, it is possible to suppress an increase in air blowing resistance due to the long air passage, and to easily supply cold air having a relatively high static pressure due to the rotating force of the blower fan 32 to the container 18 .
  • the amount of cold air supplied to the container 18 can be easily adjusted by adjusting the area of the opening (such as the length of the circular arc) and the distance from the center of rotation C1 to the opening.
  • the area of the opening (such as the length of the arc) and the distance from the center of rotation C1 to the opening may be changed according to the specifications of each part such as the volume of the container 18 and the output of the blower fan 32.
  • the inner surface of the container 18 that defines the rapid cooling chamber is made of metal, food and the like in the container 18 can be cooled quickly, which is advantageous for rapid cooling.
  • the front surface of the container 18 serving as the rapid cooling chamber is open, and the container 18 is provided on the opposite side of the blower fan 32 across the partition wall 17. Below the container 18, other cooling A drawer case 15 corresponding to the container is provided. Thereby, the cool air flowing out from the front surface of the container 18 can be efficiently used for cooling the drawer case 15 .
  • blower fan 32 is arranged with its rotation axis L1 inclined, and the blower fan 32 blows the cool air forward and upward from the opening, thereby promoting the convection of the cool air and spreading the entire inside of the container 18. It becomes easy to suppress temperature deviation in the container 18 by flowing cool air.
  • the freezer compartment 13 is used as the first storage compartment and the refrigerator compartment 12 is used as the second storage compartment has been described.
  • the present invention is not limited to this, and for example, the first storage compartment may be the refrigerator compartment 12 and the second storage compartment may be the freezer compartment 13 .
  • the blower fan 32 is configured to directly cool the refrigerator compartment 12 via the first opening 38, the outlets 42, 51, and the second outlets 43, 52, and cool the freezer compartment 13 via the duct 21.
  • the rotation axis L1 of the blower fan 32 is arranged to be tilted, but the present invention is not limited to this.
  • the rotation axis L1 may be arranged substantially horizontally. good too.
  • the refrigerator according to the present invention can be suitably used as a refrigerator capable of realizing rapid cooling with cold air with reduced pressure loss.

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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

L'invention concerne un réfrigérateur capable d'un refroidissement rapide avec de l'air froid, avec une perte de pression réduite.　Un réfrigérateur 10 comprend : un ventilateur soufflant 32 disposé derrière un compartiment de congélation 13 (premier compartiment de stockage) et apte à souffler de l'air froid vers le compartiment de congélateur 13 et un compartiment de réfrigérateur (second compartiment de stockage) ; et une paroi de séparation 17 qui sépare le compartiment de congélateur 13 et le ventilateur soufflant 32. La paroi de séparation possède une ouverture (première ouverture et orifices d'évacuation 42, 51) qui communique avec l'intérieur d'un carter de ventilateur 35 du ventilateur soufflant 32. La présente invention comprend un contenant qui est positionné sur le côté opposé au ventilateur soufflant de façon à intercaler l'ouverture entre eux et fonctionne comme un compartiment de refroidissement rapide avec de l'air froid qui passe à travers l'ouverture.
PCT/JP2022/034112 2021-10-19 2022-09-12 Réfrigérateur WO2023067948A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021171224A JP2023061305A (ja) 2021-10-19 2021-10-19 冷蔵庫
JP2021-171224 2021-10-19

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WO2023067948A1 true WO2023067948A1 (fr) 2023-04-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59217483A (ja) * 1984-05-15 1984-12-07 松下冷機株式会社 冷蔵庫等の除霜装置
JPH1019291A (ja) * 1996-06-28 1998-01-23 Daikin Ind Ltd 壁掛け式空気調和装置
JP2013029290A (ja) * 2011-07-29 2013-02-07 Sharp Corp 冷蔵庫
WO2020075242A1 (fr) * 2018-10-10 2020-04-16 三菱電機株式会社 Réfrigérateur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59217483A (ja) * 1984-05-15 1984-12-07 松下冷機株式会社 冷蔵庫等の除霜装置
JPH1019291A (ja) * 1996-06-28 1998-01-23 Daikin Ind Ltd 壁掛け式空気調和装置
JP2013029290A (ja) * 2011-07-29 2013-02-07 Sharp Corp 冷蔵庫
WO2020075242A1 (fr) * 2018-10-10 2020-04-16 三菱電機株式会社 Réfrigérateur

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