JP2004020003A - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
JP2004020003A
JP2004020003A JP2002173622A JP2002173622A JP2004020003A JP 2004020003 A JP2004020003 A JP 2004020003A JP 2002173622 A JP2002173622 A JP 2002173622A JP 2002173622 A JP2002173622 A JP 2002173622A JP 2004020003 A JP2004020003 A JP 2004020003A
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JP
Japan
Prior art keywords
cooler
heating element
refrigerator
protection cover
heater
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.)
Pending
Application number
JP2002173622A
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Japanese (ja)
Inventor
Toshifumi Kawakami
川上 俊史
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2002173622A priority Critical patent/JP2004020003A/en
Publication of JP2004020003A publication Critical patent/JP2004020003A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of efficiently radiating radiant heat from a defrosting exothermic body to a cooler with low-cost specifications to reduce a defrost operation time of the refrigerator, and suppressing temperature increase inside the refrigerator to accomplish energy saving. <P>SOLUTION: This refrigerator has: the cooler 9 cooling in-chamber temperature; an exothermic body 11 positioned below the cooler 9, melting frost adhering to the cooler 9; and an exothermic body protection cover 12 positioned between the cooler 9 and the exothermic body 11, preventing contact of water melted and dropping from the cooler 9 with the exothermic body 11. A face 12a on the exothermic body 11 side of the exothermic body protection cover 12 is colored into a blackish color, and a face 11b on the cooler 9 side of the exothermic body protection cover 12 is made to have metallic luster. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、冷却器の霜取りをヒータ等の発熱体によって行う除霜装置を備えた冷蔵庫に関するものである。
【0002】
【従来の技術】
図7は例えば特開平3ー113260号公報に開示された従来の冷蔵庫内冷却器の除霜装置付近の一例を示す正面図、図8は図7の要部を拡大した斜視図である。9は冷却器で、冷媒配管用金属パイプ9a及び冷却器フィン9bによって構成されている。11は発熱体であるガラス管ヒ−タで、ヒータ線11a、リード線11b、ガラス管11c及び電気絶縁のためのゴムキャップ11dによって構成されている。18は金属板によって形成された屋根状で表面が網状仕様のヒータ保護カバーであり、網状構造によってガラス管ヒ−タ11からの輻射熱を透過しやすくすると共に、冷却器9の霜取り時に滴下してくる水滴がガラス管ヒータ11の表面に接触するのを防ぐようにしてある。
【0003】
【発明が解決しようとする課題】
しかしながら、ヒータ保護カバー18は網状仕様なので、網目から水がすり抜けてガラス管ヒータ11の表面に滴下し、ガラス管ヒータ11の高温表面において蒸発音が発生する恐れがあり、また、単純な板によってヒータ保護カバーを形成する場合と比較してコストアップになる。
【0004】
本発明は上記のような課題を解決するためになされたもので、安価な仕様で除霜用発熱体からの輻射熱を効率良く冷却器に放射して冷蔵庫の霜取り運転時間を短縮し、さらに冷蔵庫庫内の温度上昇を抑制でき、省エネルギーを達成することができる冷蔵庫を提供することを目的とする。
【0005】
【課題を解決するための手段】
本発明に係る冷蔵庫は、庫内空気を冷却する冷却器と、冷却器の下方に位置し冷却器に付着した霜を溶かす発熱体と、冷却器と発熱体の間に位置しており冷却器から融解滴下する水が発熱体に直接接触して蒸発音が発生するのを防ぐための発熱体保護カバーとを備えた冷蔵庫であって、発熱体保護カバーの発熱体側の面を黒色系統に着色することによって反射率を下げて発熱体から冷却器に向かう輻射熱の反射を抑えると共に、発熱体保護カバーの冷却器側の面に金属光沢性を持たせて発熱体の輻射熱を効率良く冷却器に放射させるようにしたものである。
【0006】
また、庫内空気を冷却する冷却器と、該冷却器の下方に位置し該冷却器に付着した霜を溶かす発熱体と、冷却器と発熱体の間に位置しており冷却器から融解滴下する水が直接発熱体に直接接触して蒸発音が発生するのを防ぐための発熱体保護カバーと、発熱体の下部に位置しており発熱体により冷却器の霜取りを行った際に冷却器から融解滴下した水を集めるための排水経路を形成する水分受け部とを備えた冷蔵庫であって、発熱体保護カバーの発熱体側の面を黒色系統に着色することによって反射率を下げて発熱体から冷却器に向かう輻射熱の反射を抑え、発熱体保護カバーの冷却器側の面に金属光沢性を持たせて発熱体の輻射熱を効率良く冷却器に放射させると共に、水分受け部を光沢性のある金属材料で形成しまたは発熱体側の面に光沢性塗料を塗布することによって光沢性を向上させ、発熱体から下方向への輻射熱を上方向に反射するようにしたものである。
【0007】
【発明の実施の形態】
[実施の形態1]
図1は本発明の実施の形態1に係る冷蔵庫の縦断面図、図2は図1の冷却器周辺部の正面図、図3は図2の側面図、図4は冷却器周辺の輻射熱の経路を示す作用説明図である。1は冷蔵庫の庫内と外気を隔てる断熱壁、1a,1bは断熱壁1を形成する鋼板製外箱及び樹脂製内箱であり、冷蔵庫は冷蔵室2、野菜室3及び冷凍室4によって区画され、各室2,3,4の前面にはそれぞれ冷蔵室扉5、野菜室扉6及び冷凍室扉7が設けられている。なお、8は冷蔵庫の背部に配設された圧縮機である。
【0008】
9は庫内空気を冷却するために冷蔵庫の冷凍室4の後部に配設された冷却器で、冷媒配管用金属パイプ9aと冷却器フィン9bとによって構成されている。10は庫内の空気を循環させるために冷却器9の上方に配設されたプラスチック樹脂製の庫内ファンである。11は冷却器9に付着した霜を溶かすための発熱体であるガラス管ヒータで、冷却器9の下方に配設され、ニクロム線等のヒータ線11a、リード線11b、ヒータ線11aの周りを覆うガラス管11c及び電気絶縁のためのゴムキャップ11dによって構成されている。
【0009】
12は屋根状をなす金属製のヒータ保護カバーで、冷却器9の下部でガラス管ヒータ11の上部に配設されており、融解され霜から水分となって冷却器9から滴下してきた水がガラス管ヒータ11の発熱部表面に直接落下して蒸発音が発生するのを防止する。そして、ヒータ保護カバー12の下面12a(ガラス管ヒータ11側)は、冷蔵庫の低環境や寿命期間に耐用し得る黒色アルマイト等の黒色系統の塗料を用いて着色してあり、これによりヒータ保護カバー12の反射率を下げ、ガラス管ヒータ11からその上部への輻射熱がヒータ保護カバー12によって下方に反射されないようになっている。また、ヒータ保護カバー12の上面12b(冷却器9側)は光沢性のある材料で形成しまたは光沢性のある塗料を塗布しており、こうすることによりヒータ保護カバー12の反射率を上げて熱放射しやすくしている。
【0010】
13は金属板によって形成された表面がほぼ桶形状の水分受け部で、ガラス管ヒータ11の下部に配設されており、霜が融解して滴下してきた水分を集める。14は水分受け部13に集められた水を通す排水経路、15は排水経路14を通った水を集める蒸発皿である。16は蒸発皿15の下部に配設された金属パイプで、圧縮機によって圧縮された高温冷媒が通っている。
【0011】
上記のように構成した実施の形態1の作用を説明する。冷却器9に霜が付着すると、この霜は下方から照射するガラス管ヒータ11の輻射熱によって溶かされる。この際、ヒータ保護カバー12のガラス管ヒータ11側の下面12aは黒色系統に着色化されているので、ガラス管ヒータ11から冷却器9に向かう輻射熱はヒータ保護カバー12による放射が抑制され、また、ヒータ保護カバー12の冷却器9側の上面12bに金属光沢性を持たせてあるので、ガラス管ヒータ11の輻射熱を効率良く冷却器9側に放射する。
こうして、冷却器9に付着した霜がガラス管ヒータ11の熱によって溶かされると、ヒータ保護カバー12の上面に水が滴下し、この水はここを伝わって水分受け部13に集められ、排水経路14を通って蒸発皿15に集められる。そして蒸発皿15に貯水された水は、その下部に位置する金属パイプ16内を通る高温冷媒によって蒸発される。
【0012】
本実施の形態によれば、黒色系統の塗料を用いて着色した下面12aと、光沢性のある材料または光沢性のある塗料を用いた上面12bとからなるヒータ保護カバー12によって、ガラス管ヒータ11からの輻射熱がヒータ保護カバー12に放射されるので、ガラス管ヒータ11から冷却器9への輻射熱の透過性が向上し、ガラス管ヒータ11からの輻射熱を効率よく冷却器9に放射し、霜の融解効率を低化させることもなく、霜取りを短時間で効率よく終わらせることができる。
【0013】
[実施の形態2]
図5は本発明の実施の形態2に係る冷却器周辺の輻射熱の経路を示す作用説明図である。本実施の形態では、ヒータ保護カバー12の下面12aを黒色系統の塗料を用いて着色し、上面12bに光沢性のある材料等を用いるのに加えて、水分受け部13の金属板表面を光沢性の高い塗料等によって形成したものである。なお、図4と同一部分には同じ符号を付し、説明を省略する。
13aは水分受け部13のガラス管ヒータ11側に位置する上面で、光沢性の高い塗料を塗布しまたは金属光沢性の高い材料によって形成して反射率を上げてあり、ガラス管ヒータ11の下方に向かう輻射熱を上方に反射させる。
こうして、実施の形態1と組み合わせることで、ガラス管ヒータ11からの輻射熱を効率よく冷却器9側に放射し、効率よく短時間で霜取り運転を終わらせることができる。
【0014】
[実施の形態3]
図6は本発明の実施の形態3に係る冷却器周辺の正面図である。
冷蔵庫の冷媒として可燃性のHC系冷媒(イソブタン、シクロペタン等)を使用した場合は、冷却器9の冷媒配管用金属パイプ9a内に、イソブタン、シクロペタン、プロパン等の地球温暖化に寄与しないHC系冷媒が充填されるので、冷媒が着火するのを防止するために、ヒータにシーズヒータや二重ガラス管ヒータ等(以下、シーズヒータ等という)の表面温度の低いヒータを使用することがある。
このような場合、シーズヒータ等を使用してもヒータ保護カバーが加熱されて高温になり、冷媒が着火するおそれがあった。
【0015】
本実施の形態においては、HC系冷媒を用いた冷蔵庫において、冷却器9と発熱体であるシーズヒータ等17との間に、実施の形態1に係るヒータ保護カバー12、すなわち、シーズヒータ等17側の面を黒色系統に着色し、冷却器9側の面に金属光沢性をもたせたヒータ保護カバー12を配設したものである。
これにより、シーズヒータ等17からの輻射熱をヒータ保護カバー12が吸収して表面から効率よく放射するため、ヒータ保護カバー12が高温になるのを抑制することができ、冷蔵庫の故障を防止することができる。
【0016】
【発明の効果】
以上の説明から明らかなように、本発明は、庫内空気を冷却する冷却器と、冷却器の下方に位置し冷却器に付着した霜を溶かす発熱体と、冷却器と発熱体の間に位置し冷却器から融解滴下する水が発熱体に接触するのを防ぐ発熱体保護カバーとを備えた冷蔵庫であって、発熱体保護カバーの発熱体側の面を黒色系統に着色すると共に、発熱体保護カバーの冷却器側の面に金属光沢性を持たせるように構成したので、霜取り運転時に、発熱体保護カバーの黒色系統に着色した面が発熱体からの放射熱の反射を防ぎ、発熱体保護カバーの光沢性を持たせた面が発熱体から冷却器への輻射熱を効率良く放射する。このため、発熱体の輻射熱が発熱体保護カバーに反射されて冷却器と反対側に放射させるのを防ぐことができ、霜の融解が効率よく行われ、霜取り時間が短縮する。
【0017】
また、庫内空気を冷却する冷却器と、冷却器の下方に位置し冷却器に付着した霜を溶かす発熱体と、冷却器と発熱体の間に位置し冷却器から融解滴下する水が発熱体に接触するのを防ぐ発熱体保護カバーと、発熱体の下部に位置し冷却器から融解滴下した水を集める水分受け部とを備えた冷蔵庫であって、発熱体保護カバーの発熱体側の面を黒色系統に着色し、発熱体保護カバーの冷却器側の面に金属光沢性を持たせると共に、水分受け部を光沢性のある金属材料で形成しまたは発熱体側の面に光沢性塗料を塗布して構成したので、霜取り運転時に、発熱体保護カバーの黒色系統に着色した面が発熱体からの放射熱の反射を防ぎ、発熱体保護カバーの光沢性を持たせた面が発熱体から冷却器への輻射熱を効率良く放射し、発熱体の輻射熱が発熱体保護カバーに反射されて冷却器と反対側に放射させるのを防ぐことができると共に、金属光沢性を持たせた水分受け部が反射率を高くして発熱体の下方に向かう輻射熱を反射することができるので、霜の融解が効率よく行われ、霜取り時間が短縮する。
【図面の簡単な説明】
【図1】本発明の実施の形態1に係る冷蔵庫の縦断面図である。
【図2】図1の冷却器周辺の正面図である。
【図3】図2の側面図である。
【図4】図1の冷却器周辺の輻射熱の経路を示す作用説明図である。
【図5】本発明の実施の形態2に係る冷蔵庫の冷却器周辺の輻射熱の経路を示す作用説明図である。
【図6】本発明の実施の形態3に係る冷却器周辺の正面図である。
【図7】従来の冷蔵庫内冷却器の除霜装置付近の一例を示す正面図である。
【図8】図7の要部を拡大した斜視図である。
【符号の説明】
9 冷却器、11 ガラス管ヒータ(発熱体)、12 ヒータ保護カバー、12a ヒータ保護カバーの下面、12b ヒータ保護カバーの上面、13 水分受け部、13a 水分受け部の上面、17 シーズヒータ等。
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a refrigerator provided with a defrosting device that defrosts a cooler by a heating element such as a heater.
[0002]
[Prior art]
FIG. 7 is a front view showing an example of the vicinity of a defrosting device of a conventional refrigerator cooler disclosed in Japanese Patent Application Laid-Open No. 3-113260, for example, and FIG. 8 is an enlarged perspective view of a main part of FIG. Reference numeral 9 denotes a cooler, which is composed of a refrigerant pipe metal pipe 9a and a cooler fin 9b. Reference numeral 11 denotes a glass tube heater as a heating element, which is constituted by a heater wire 11a, a lead wire 11b, a glass tube 11c, and a rubber cap 11d for electrical insulation. Reference numeral 18 denotes a roof-shaped heater protection cover formed of a metal plate and having a mesh-shaped surface. The mesh-shaped structure facilitates the transmission of radiant heat from the glass tube heater 11 and drops when the cooler 9 is defrosted. Incoming water droplets are prevented from contacting the surface of the glass tube heater 11.
[0003]
[Problems to be solved by the invention]
However, since the heater protection cover 18 is a mesh type, water may pass through the mesh and drop on the surface of the glass tube heater 11, which may cause evaporation noise on the high-temperature surface of the glass tube heater 11. The cost is higher than when a heater protection cover is formed.
[0004]
The present invention has been made in order to solve the above-described problems, and efficiently radiates radiant heat from a defrosting heating element to a cooler with an inexpensive specification to shorten a defrosting operation time of a refrigerator, and further reduce the refrigerator. It is an object of the present invention to provide a refrigerator that can suppress a rise in temperature in a refrigerator and can achieve energy saving.
[0005]
[Means for Solving the Problems]
A refrigerator according to the present invention includes a cooler that cools air in a refrigerator, a heating element that is located below the cooler and melts frost attached to the cooler, and a cooler that is located between the cooler and the heating element. This is a refrigerator equipped with a heating element protection cover for preventing water dropped from melting directly from contacting the heating element to generate evaporation noise, and the heating element side of the heating element protection cover is colored black. By lowering the reflectance by suppressing the reflection of radiant heat from the heating element to the cooler, the surface of the heating element protective cover on the cooler side has metallic luster to efficiently transfer the radiant heat of the heating element to the cooler. It is made to radiate.
[0006]
In addition, a cooler that cools air in the refrigerator, a heating element that is located below the cooler and melts frost adhered to the cooler, and is located between the cooler and the heating element and melts and drops from the cooler. Heating element protection cover to prevent water from coming into direct contact with the heating element to generate evaporative noise, and a cooler that is located at the bottom of the heating element and defrosts the cooler using the heating element And a water receiving portion that forms a drainage path for collecting water dropped from the heating element, wherein the heating element side of the heating element protective cover is colored black to reduce the reflectance and reduce the reflectance of the heating element. To reduce the reflection of radiant heat from the heater to the cooler, and make the surface of the cooler side of the heating element protective cover have metallic luster to efficiently radiate the radiant heat of the heating element to the cooler, Made of some metal material or light on the surface on the heating element side Improves glossiness by applying the sexual coating is obtained by to reflect upward the radiant heat downward from the heating element.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
[Embodiment 1]
1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a front view of a portion around the cooler of FIG. 1, FIG. 3 is a side view of FIG. 2, and FIG. It is an operation explanatory view showing a route. Reference numeral 1 denotes a heat insulating wall for separating the inside of the refrigerator from the outside air, 1a and 1b denote a steel plate outer box and a resin inner box forming the heat insulating wall 1, and the refrigerator is partitioned by a refrigerator room 2, a vegetable room 3 and a freezer room 4. The refrigerator compartment door 5, the vegetable compartment door 6, and the freezer compartment door 7 are provided in front of the compartments 2, 3, and 4, respectively. Reference numeral 8 denotes a compressor disposed on the back of the refrigerator.
[0008]
Reference numeral 9 denotes a cooler disposed at the rear of the freezer compartment 4 of the refrigerator for cooling the air in the refrigerator, and includes a refrigerant pipe metal pipe 9a and cooler fins 9b. Reference numeral 10 denotes an internal fan made of plastic resin disposed above the cooler 9 to circulate the air in the internal space. Reference numeral 11 denotes a glass tube heater which is a heating element for melting frost attached to the cooler 9 and is disposed below the cooler 9 so that a heater wire 11a such as a nichrome wire, a lead wire 11b, and a heater wire 11a are formed around the heater wire 11a. It comprises a glass tube 11c to cover and a rubber cap 11d for electrical insulation.
[0009]
Reference numeral 12 denotes a roof-shaped metal heater protection cover, which is disposed below the cooler 9 and above the glass tube heater 11, and water that has been melted, turned into moisture from frost, and dropped from the cooler 9 has been removed. This prevents evaporation noise from directly falling on the surface of the heat generating portion of the glass tube heater 11. The lower surface 12a of the heater protection cover 12 (on the side of the glass tube heater 11) is colored with a black paint such as black alumite which can be used in a low environment or a service life of the refrigerator. 12, the radiant heat from the glass tube heater 11 to its upper part is not reflected downward by the heater protection cover 12. Further, the upper surface 12b (the cooler 9 side) of the heater protection cover 12 is formed of a glossy material or coated with a glossy paint, thereby increasing the reflectance of the heater protection cover 12. It is easy to radiate heat.
[0010]
Reference numeral 13 denotes a water receiving portion formed of a metal plate and having a substantially trough-shaped surface, which is disposed below the glass tube heater 11 and collects water that has melted and dropped as the frost melted. Reference numeral 14 denotes a drainage passage for passing the water collected in the water receiving portion 13, and reference numeral 15 denotes an evaporating dish for collecting water passing through the drainage passage 14. Reference numeral 16 denotes a metal pipe disposed below the evaporating dish 15, through which a high-temperature refrigerant compressed by a compressor passes.
[0011]
The operation of the first embodiment configured as described above will be described. When frost adheres to the cooler 9, the frost is melted by the radiant heat of the glass tube heater 11 irradiated from below. At this time, since the lower surface 12a of the heater protection cover 12 on the glass tube heater 11 side is colored in a black system, radiant heat from the glass tube heater 11 to the cooler 9 is suppressed from being radiated by the heater protection cover 12, and Since the upper surface 12b of the heater protection cover 12 on the side of the cooler 9 has a metallic luster, the radiant heat of the glass tube heater 11 is efficiently radiated to the cooler 9 side.
When the frost adhering to the cooler 9 is melted by the heat of the glass tube heater 11 in this way, water drops on the upper surface of the heater protection cover 12, and this water is transmitted there and collected in the water receiving portion 13 to be drained. It is collected in the evaporating dish 15 through 14. The water stored in the evaporating dish 15 is evaporated by the high-temperature refrigerant passing through the metal pipe 16 located below the evaporating dish 15.
[0012]
According to the present embodiment, the glass tube heater 11 is provided by the heater protection cover 12 composed of the lower surface 12a colored with a black paint and the upper surface 12b with a glossy material or a glossy paint. Radiated from the glass tube heater 11 to the cooler 9 is improved, and the radiated heat from the glass tube heater 11 is efficiently radiated to the cooler 9 to prevent frost. The defrosting can be efficiently completed in a short time without reducing the melting efficiency of the frost.
[0013]
[Embodiment 2]
FIG. 5 is an operation explanatory view showing a path of radiant heat around a cooler according to Embodiment 2 of the present invention. In the present embodiment, the lower surface 12a of the heater protection cover 12 is colored using a black paint, and a glossy material is used for the upper surface 12b. It is formed by highly paint or the like. The same parts as those in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted.
Reference numeral 13a denotes an upper surface of the water receiving portion 13 located on the glass tube heater 11 side, which is coated with a high-gloss paint or formed of a material having a high metallic luster to increase the reflectance. The radiant heat toward is reflected upward.
Thus, by combining with the first embodiment, the radiant heat from the glass tube heater 11 can be efficiently radiated to the cooler 9 side, and the defrosting operation can be efficiently completed in a short time.
[0014]
[Embodiment 3]
FIG. 6 is a front view around a cooler according to Embodiment 3 of the present invention.
When a flammable HC-based refrigerant (isobutane, cyclopentane, etc.) is used as the refrigerant of the refrigerator, an HC-based refrigerant such as isobutane, cyclopentane, propane, etc., which does not contribute to global warming, is placed in the refrigerant pipe metal pipe 9a of the cooler 9. Since the refrigerant is charged, a heater having a low surface temperature such as a sheathed heater or a double glass tube heater (hereinafter, referred to as a sheathed heater) may be used as the heater in order to prevent the coolant from being ignited.
In such a case, even if a sheathed heater or the like is used, the heater protection cover is heated to a high temperature, and there is a possibility that the refrigerant may ignite.
[0015]
In the present embodiment, in a refrigerator using an HC-based refrigerant, a heater protection cover 12 according to the first embodiment, that is, a sheath heater 17 is provided between a cooler 9 and a sheath heater 17 such as a heating element. The surface on the side is colored black, and a heater protective cover 12 having metallic luster is provided on the surface on the side of the cooler 9.
Thereby, since the radiant heat from the sheathed heater 17 or the like is absorbed by the heater protection cover 12 and efficiently radiated from the surface, it is possible to suppress the temperature of the heater protection cover 12 from becoming high and to prevent the refrigerator from malfunctioning. Can be.
[0016]
【The invention's effect】
As is apparent from the above description, the present invention provides a cooler that cools air in a refrigerator, a heating element that is located below the cooler and melts frost attached to the cooler, and between the cooler and the heating element. A heating element protection cover for preventing water dropped and melted from the cooler from coming into contact with the heating element, wherein the heating element side surface of the heating element protection cover is colored in a black system and the heating element is The protective cover is configured to have metallic luster on the cooler side, so the black colored surface of the heating element protection cover prevents the reflection of radiant heat from the heating element during defrosting operation. The glossy surface of the protective cover efficiently radiates radiant heat from the heating element to the cooler. For this reason, it is possible to prevent the radiant heat of the heating element from being reflected by the heating element protective cover and radiating the heat to the side opposite to the cooler, so that the frost is efficiently melted and the defrosting time is reduced.
[0017]
In addition, a cooler that cools the air inside the refrigerator, a heating element located below the cooler that melts frost adhering to the cooler, and water that is located between the cooler and the heating element and melts and drops from the cooler generates heat A refrigerator provided with a heating element protection cover for preventing contact with a body and a water receiving portion located at a lower portion of the heating element and for collecting water melted and dropped from a cooler, wherein a surface of the heating element protection cover on the heating element side. Is colored black to give metallic luster to the surface of the heating element protective cover on the cooler side, and the moisture receiving part is made of a glossy metal material or glossy paint is applied to the surface of the heating element side In the defrosting operation, the black colored surface of the heating element protection cover prevents reflection of radiant heat from the heating element, and the glossy surface of the heating element protection cover cools from the heating element during defrosting operation. Efficiently radiates radiant heat to the vessel, generating radiant heat from the heating element. The water can be prevented from being reflected by the body protection cover and radiating to the opposite side of the cooler, and the moisture receiving portion with metallic luster increases the reflectance to reflect the radiant heat going down the heating element. Therefore, the frost is efficiently melted, and the defrosting time is shortened.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention.
FIG. 2 is a front view around the cooler of FIG. 1;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is an operation explanatory view showing a path of radiant heat around the cooler in FIG. 1;
FIG. 5 is an operation explanatory view showing a path of radiant heat around a cooler of a refrigerator according to Embodiment 2 of the present invention.
FIG. 6 is a front view around a cooler according to Embodiment 3 of the present invention.
FIG. 7 is a front view showing an example of the vicinity of a conventional defroster of a refrigerator cooler.
FIG. 8 is an enlarged perspective view of a main part of FIG. 7;
[Explanation of symbols]
9 cooler, 11 glass tube heater (heating element), 12 heater protection cover, 12a lower surface of heater protection cover, 12b upper surface of heater protection cover, 13 moisture receiving portion, 13a upper surface of moisture receiving portion, 17 seeds heater, etc.

Claims (2)

庫内空気を冷却する冷却器と、該冷却器の下方に位置し該冷却器に付着した霜を溶かす発熱体と、前記冷却器と発熱体の間に位置し前記冷却器から融解滴下する水が前記発熱体に接触するのを防ぐ発熱体保護カバーとを備えた冷蔵庫であって、
前記発熱体保護カバーの発熱体側の面を黒色系統に着色すると共に、該発熱体保護カバーの冷却器側の面に金属光沢性を持たせたことを特徴とする冷蔵庫。
A cooler for cooling the air in the refrigerator, a heating element positioned below the cooler for melting frost attached to the cooler, and water positioned between the cooler and the heating element for melting and dropping from the cooler A heating element protection cover for preventing contact with the heating element,
A refrigerator characterized in that the surface of the heating element protective cover on the side of the heating element is colored in a black system, and the surface of the heating element protection cover on the side of the cooler has metallic luster.
庫内空気を冷却する冷却器と、該冷却器の下方に位置し該冷却器に付着した霜を溶かす発熱体と、前記冷却器と発熱体の間に位置し前記冷却器から融解滴下する水が前記発熱体に接触するのを防ぐ発熱体保護カバーと、前記発熱体の下部に位置し前記冷却器から融解滴下した水を集める水分受け部とを備えた冷蔵庫であって、
前記発熱体保護カバーの発熱体側の面を黒色系統に着色し、該発熱体保護カバーの冷却器側の面に金属光沢性を持たせると共に、前記水分受け部を光沢性のある金属材料で形成しまたは発熱体側の面に光沢性塗料を塗布して構成したことを特徴とする冷蔵庫。
A cooler for cooling the air in the refrigerator, a heating element positioned below the cooler for melting frost attached to the cooler, and water positioned between the cooler and the heating element for melting and dropping from the cooler A refrigerator comprising: a heating element protection cover that prevents contact with the heating element; and a water receiving portion that is located below the heating element and collects water that is melted and dropped from the cooler,
The surface of the heating element protection cover on the heating element side is colored in a black system, and the surface of the heating element protection cover on the cooler side has metallic luster, and the moisture receiving portion is formed of a glossy metal material. A refrigerator characterized in that a glossy paint is applied to a surface of a heater or a heating element side.
JP2002173622A 2002-06-14 2002-06-14 Refrigerator Pending JP2004020003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002173622A JP2004020003A (en) 2002-06-14 2002-06-14 Refrigerator

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Application Number Priority Date Filing Date Title
JP2002173622A JP2004020003A (en) 2002-06-14 2002-06-14 Refrigerator

Publications (1)

Publication Number Publication Date
JP2004020003A true JP2004020003A (en) 2004-01-22

Family

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017215118A (en) * 2016-06-02 2017-12-07 パナソニックIpマネジメント株式会社 refrigerator
EP3306242A1 (en) * 2016-10-04 2018-04-11 Lg Electronics Inc. Refrigerator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017215118A (en) * 2016-06-02 2017-12-07 パナソニックIpマネジメント株式会社 refrigerator
EP3306242A1 (en) * 2016-10-04 2018-04-11 Lg Electronics Inc. Refrigerator
US10254038B2 (en) 2016-10-04 2019-04-09 Lg Electronics Inc. Refrigerator

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