JP2004286335A

JP2004286335A - Refrigerator-freezer

Info

Publication number: JP2004286335A
Application number: JP2003080235A
Authority: JP
Inventors: Takashi Sugiyama; 隆杉山
Original assignee: Fujitsu General Ltd
Current assignee: Fujitsu General Ltd
Priority date: 2003-03-24
Filing date: 2003-03-24
Publication date: 2004-10-14
Anticipated expiration: 2023-03-24
Also published as: JP4270920B2

Abstract

<P>PROBLEM TO BE SOLVED: To increase the circulation efficiency of cool air, prevent a vegetable chamber from being excessively cooled, and simplify duct structure and heat insulating treatment. <P>SOLUTION: This refrigerator-freezer comprises a heat insulating partition wall 8 separating a refrigerating chamber 2, a switching chamber 3, and an ice-making chamber 4 from the vegetable chamber 5 and a freezing chamber 6 so as to be thermally insulated. A first evaporator 11 is used for the vegetable chamber 5 and the freezing chamber 6, and a second evaporator 13 is used for the refrigerating chamber 2, the switching chamber 3, and the ice-making chamber 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、上段から下段にかけて冷蔵室、横並びの製氷室／切替室、野菜室、冷凍室が順次設けられ、且つ２つの蒸発器を具備する冷凍冷蔵庫に関するものである。
【０００２】
【従来の技術】
図２は従来の冷凍冷蔵庫の正面を示す図である。この冷凍冷蔵庫は、最上段にチルド室１（約０．５℃）を有する冷蔵室２（約３℃）、その下段に横並びの切替室３と製氷室４（約−１９℃）、その下段に野菜室５（約７℃）、最下段に冷凍室６（約−１９℃）が配置されている。切替室３は冷却温度設定の切り替えによってソフト冷凍室（約−８℃）、パーシャル室（約−３℃）、ワイン室（約１０℃）等として使用される。
【０００３】
図３は冷凍冷蔵庫の縦断面を示す図である。前面開放の断熱箱体７の内部を断熱仕切壁３１により上下方向に断熱的に２区画し、その上段を底にチルド室１を有する冷蔵室２とし、下段を断熱仕切壁３２，３３でさらに３区画して、断熱仕切壁３１と３２で区画された冷却室を切替室３と製氷室４とし、断熱仕切壁３２と３３で区画された冷却室を野菜室５とし、最下段の冷却室を冷凍室６としている。冷凍室２の背部には蒸発器３４と送風ファン３５が配置され、野菜室５の背部には、蒸発器３６と送風ファン３７が配置され、下部の機械室１５には圧縮機１６が設置されている。３８は上部ダクト、３９は下部ダクトである。
【０００４】
蒸発器３４は圧縮機１６から送出された冷媒により熱交換して冷気を生成し、この冷気が送風ファン３５により冷蔵室２やチルド室１に吐き出される。また、蒸発器３６は圧縮機１６から送出された冷媒により熱交換して冷気を生成し、この冷気が送風ファン３７により切替室３、製氷室４、野菜室５、冷凍室６に吐き出される。
【０００５】
冷凍冷蔵庫として２つの蒸発器を使用するものは例えば特許文献１に記載があり、また縦方向に複数の冷却室を区画して設けた冷凍冷蔵庫として例えば特許文献１，２がある。
【０００６】
【特許文献１】特開平４−１５１４８４号公報
【特許文献２】特開２００２−１３８６４号公報
【０００７】
【発明が解決しようとする課題】
ところが、上記構造の冷凍冷蔵庫は、下部の蒸発器３６が担当する冷却範囲にマイナス温度帯の切替室３、製氷室４、冷凍室６だけでなく、庫内で一番温度が高い野菜室５までも含まれており、しかもこの野菜室４がマイナス温度帯の上下の冷却室に挟まれているので、冷気の循環効率が悪いという問題がある。また、蒸発器３６が野菜室５の背部に配置されているため、野菜室５への冷気漏れによってこの野菜室４に低温化が生じ野菜凍結の問題が生じるおそれがあり、その部分への特別な断熱処理が必要になる。さらに、蒸発器３４が冷蔵室２の背部に設けられているので、この部分にも特別な断熱処理が必要となる。
【０００８】
本発明の目的は、上記した問題を解決した冷凍冷蔵庫を提供することである。
【０００９】
【課題を解決するための手段】
請求項１にかかる発明は、上段から下段にかけて冷蔵室、横並びの製氷室／切替室、野菜室、冷凍室が順次設けられ、且つ第１および第２の蒸発器を具備する冷凍冷蔵庫において、前記冷蔵室および前記製氷室／切替室と前記野菜室および前記冷凍室とを断熱的に区画する第１の断熱仕切壁を設け、前記第１の蒸発器を前記野菜室および前記冷凍室用とし、前記第２の蒸発器を前記冷蔵室および前記製氷室／切替室用としたことを特徴とする冷凍冷蔵庫とした。
【００１０】
請求項２にかかる発明は、請求項１に記載の冷凍冷蔵庫において、前記第１の蒸発器は、第２の断熱仕切壁を介して前記野菜室の背部に設置されていることを特徴とする冷凍冷蔵庫とした。
【００１１】
請求項３にかかる発明は、請求項１又は２に記載の冷凍冷蔵庫において、前記第２の蒸発器は、前記製氷室／切替室の背部に設置され、前記第２の蒸発器で生成した冷気を前記冷蔵室に送るダクトが設けられているとを特徴とする冷凍冷蔵庫とした。
【００１２】
請求項４にかかる発明は、請求項１乃至３のいずれか１つに記載の冷凍冷蔵庫において、前記第１の断熱仕切壁は、冷凍冷蔵庫の全体を囲む断熱箱体への断熱処理と同時に断熱処理されていることを特徴とする冷蔵庫とした。
【００１３】
【発明の実施の形態】
図１は本発明の実施形態の冷凍冷蔵庫の縦断面を示す図である。この冷凍冷蔵庫は、最上段にチルド室１（約０．５℃）を有する冷蔵室２（約３℃）、その下段に横並びの切替室３と製氷室４（約−１９℃）、その下段に野菜室５（約７℃）、最下段に冷凍室６（約−１９℃）が配置されている。切替室３は冷却温度設定の切り替えによってソフト冷凍室（約−８℃）、パーシャル室（約−３℃）、ワイン室（約１０℃）等として使用される。
【００１４】
本実施形態の冷凍冷蔵庫は、前面開放の断熱箱体７の内部を断熱仕切壁８により上下方向に断熱的に２区画している。この断熱仕切壁８は断熱箱体７の内側に断熱処理のためにウレタン発泡を行う前の工程で取り付け、その後にウレタン発泡による断熱処理を行う方法により製造され、これにより上下の室は完全に断熱的に区画されている。断熱仕切壁８で区画された下段は断熱仕切壁９によりさらに２区画し、断熱仕切壁８と９の間の冷却室を野菜室５とし、断熱仕切壁９の下部の冷却室を冷凍室６とする。また、断熱仕切壁８の上段も断熱仕切壁１０によりさらに２区画し、断熱仕切壁８と１０の間の冷却室を横並びの切替室３と製氷室４とし、最も上段の冷却室を底面にチルド室１を有する冷蔵室２としている。各冷却室の前面は開閉扉で閉じられている。野菜室５の背部には、断熱仕切壁９を介して第１の蒸発器１１と第１の送風ファン１２が配置され、製氷室４（又は切替室３）の背部には第２の蒸発器１３と第２の送風ファン１４が配置され、下部の機械室１５には圧縮機１６が設置されている。
【００１５】
第１の蒸発器１１は圧縮機１６から送出された冷媒により熱交換して冷気を生成し、この冷気が送風ファン１２により野菜室５と冷凍室６に吐き出される。また、第２の蒸発器１３は圧縮機１６から送出された冷媒により熱交換して冷気を生成し、この冷気が送風ファン１４により冷蔵室２、切替室３および製氷室４に吐き出される。１７は送風ファン１４による冷気流通用のダクト、１８はそのダクト１７から冷蔵室２への吐出口、１９はチルド室１への吐出口、２０は製氷室４への吐出口（切替室３への吐出口もあるが図示せず）である。２１は野菜室５への吐出口である。なお、図１では冷気の吐き出し方向を矢印で表したが、各蒸発器１１，１３への冷気の戻し経路については表示を省略した。
【００１６】
このように、本実施形態では、断熱仕切壁８によって野菜室５および冷凍室６と切替室３、製氷室４および冷蔵室２とを断熱的に完全に分離しているので、第１の蒸発器１１は野菜室５と冷凍室６の冷却のみを行うことになる。野菜室５は扉側を除く周囲が断熱仕切壁８と９によって覆われるので、冷気の吐出口２１の開口面積の適宜設定により野菜凍結を防止した緩い冷却を行うことができる。一方、第２の蒸発器１３はチルド室１、冷蔵室２、切替室３および製氷室４を冷却する。このとき、その第２の蒸発器１３の蒸発温度を第１の蒸発器１１のそれと同程度（例えば、−１９℃程度）とすることにより、切替室３や製氷室４やチルド室１は必要充分な冷却が行なわれる。
【００１７】
また、図３に示した従来構造では蒸発器３４が冷蔵室２の背部に設置されていたので、その蒸発器３４と冷蔵室２との間を断熱構造にしなければ冷蔵室２の冷却が過剰になるおそれがあったが、本実施形態では第２の蒸発器１３と第２の送風ファン１４を切替室３や製氷室４の背部に設置するので、冷蔵室２に従来のような断熱構造は必要なくなる。また、第１の蒸発器１１と送風ファン１２は野菜室５の背部に設置されるので、野菜室５や冷凍室６への冷気供給用のダクト構造は簡単となる。さらに、切替室３を第２の冷凍室用とする場合は、その背面への断熱構造も必要なくなる。さらに、野菜室５は従来構造のようにマイナス温度帯の冷却室で上下を挟まれる構造とはならないので、冷気循環構造を簡素化でき、その効率を良好にできる。
【００１８】
【発明の効果】
以上から本発明によれば、冷気の循環効率が良好となり、省エネルギーにつながり、野菜室の冷えすぎを防止でき、またダクト構造や断熱処理が簡単になるという利点がある。
【図面の簡単な説明】
【図１】本発明の実施形態の冷凍冷蔵庫の縦断面図である。
【図２】従来の冷凍冷蔵庫の正面面図である。
【図３】従来の冷凍冷蔵庫の縦断面図である。
【符号の説明】
７：断熱箱体、８，９，１０：断熱仕切壁、１１：第１の蒸発器、１２：第１の送風ファン、１３：第２の蒸発器、１４：第２の送風ファン[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a refrigerator having a refrigerator room, a horizontally arranged ice making room / switching room, a vegetable room, and a freezing room which are sequentially provided from the upper stage to the lower stage, and having two evaporators.
[0002]
[Prior art]
FIG. 2 is a view showing the front of a conventional refrigerator-freezer. This refrigerator has a refrigerator room 2 (approximately 3 ° C.) having a chilled room 1 (approximately 0.5 ° C.) at the top, a switching room 3 and an ice making room 4 (approximately -19 ° C.) A vegetable compartment 5 (about 7 ° C.) and a freezing compartment 6 (about −19 ° C.) are provided at the bottom. The switching room 3 is used as a soft freezing room (about −8 ° C.), a partial room (about −3 ° C.), a wine room (about 10 ° C.), etc. by switching the cooling temperature setting.
[0003]
FIG. 3 is a view showing a vertical section of the refrigerator. The inside of the heat-insulating box 7 having an open front is vertically divided into two by a heat-insulating partition wall 31 in an insulated manner, and the upper stage is a refrigerator compartment 2 having a chilled room 1 at the bottom, and the lower stage is further divided by heat-insulating partition walls 32 and 33. The cooling room divided into three heat insulating partitions 31 and 32 is a switching room 3 and an ice making room 4, the cooling room divided by the heat insulating partitions 32 and 33 is a vegetable room 5, and the lowermost cooling room Is a freezer compartment 6. An evaporator 34 and a blower fan 35 are arranged at the back of the freezing room 2, an evaporator 36 and a blower fan 37 are arranged at the back of the vegetable room 5, and a compressor 16 is installed at the lower machine room 15. ing. 38 is an upper duct, 39 is a lower duct.
[0004]
The evaporator 34 exchanges heat with the refrigerant sent from the compressor 16 to generate cool air, and the cool air is discharged to the refrigerator compartment 2 and the chilled room 1 by the blower fan 35. The evaporator 36 exchanges heat with the refrigerant sent from the compressor 16 to generate cool air, and this cool air is discharged by the blower fan 37 to the switching room 3, the ice making room 4, the vegetable room 5, and the freezing room 6.
[0005]
A refrigerator using two evaporators as a refrigerator-freezer is described in, for example, Patent Literature 1, and Patent Literatures 1 and 2 are described as a refrigerator-freezer provided with a plurality of cooling chambers divided in a vertical direction.
[0006]
[Patent Document 1] JP-A-4-151484 [Patent Document 2] JP-A-2002-13864
[Problems to be solved by the invention]
However, in the refrigerator having the above structure, the cooling range handled by the lower evaporator 36 includes not only the switching room 3, the ice making room 4, and the freezing room 6 in the minus temperature zone, but also the vegetable room 5 having the highest temperature in the refrigerator. And the vegetable compartment 4 is sandwiched between the upper and lower cooling compartments in the minus temperature zone, which causes a problem of poor circulation efficiency of cool air. In addition, since the evaporator 36 is arranged at the back of the vegetable compartment 5, cold air leaking into the vegetable compartment 5 may cause the vegetable compartment 4 to be cooled to cause a problem of vegetable freezing. Heat insulation is required. Further, since the evaporator 34 is provided at the back of the refrigerator compartment 2, special heat insulation treatment is required also at this portion.
[0008]
An object of the present invention is to provide a refrigerator-freezer that has solved the above-mentioned problems.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 is the refrigerator according to the first aspect, wherein a refrigerator compartment, an ice making compartment / switching compartment, a vegetable compartment, and a freezing compartment are sequentially provided from the upper stage to the lower stage, and the refrigerator includes first and second evaporators. A first heat insulating partition wall for insulatingly partitioning the refrigerator compartment and the ice making compartment / switching compartment, the vegetable compartment and the freezing compartment, and providing the first evaporator for the vegetable compartment and the freezing compartment; The second evaporator is used for the refrigerating room and the ice making room / switching room.
[0010]
The invention according to claim 2 is the refrigerator according to claim 1, wherein the first evaporator is installed on the back of the vegetable compartment via a second heat insulating partition wall. It was a refrigerator-freezer.
[0011]
The invention according to claim 3 is the refrigerator according to claim 1 or 2, wherein the second evaporator is installed at the back of the ice making room / switching room, and cool air generated by the second evaporator is provided. The refrigerator is characterized in that a duct is provided for sending the refrigerator to the refrigerator compartment.
[0012]
According to a fourth aspect of the present invention, in the refrigerator according to any one of the first to third aspects, the first heat-insulating partition wall is heat-insulated simultaneously with heat-insulating processing on a heat-insulating box surrounding the entire refrigerator. A refrigerator characterized by being treated.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a view showing a vertical cross section of a refrigerator-freezer according to an embodiment of the present invention. This refrigerator has a refrigerator room 2 (approximately 3 ° C.) having a chilled room 1 (approximately 0.5 ° C.) at the top, a switching room 3 and an ice making room 4 (approximately -19 ° C.) A vegetable compartment 5 (about 7 ° C.) and a freezing compartment 6 (about −19 ° C.) are provided at the bottom. The switching room 3 is used as a soft freezing room (about −8 ° C.), a partial room (about −3 ° C.), a wine room (about 10 ° C.), etc. by switching the cooling temperature setting.
[0014]
In the refrigerator-freezer of the present embodiment, the inside of the heat-insulating box 7 having an open front is divided into two heat-insulating partitions in the vertical direction by a heat-insulating partition wall 8. The heat-insulating partition wall 8 is manufactured by a method in which the heat-insulating partition wall 8 is attached to the inside of the heat-insulating box 7 in a step before performing urethane foaming for heat-insulating treatment, and thereafter, heat-insulating treatment is performed by urethane foaming. Partitioned adiabatically. The lower section defined by the heat insulating partition wall 8 is further divided into two sections by the heat insulating partition wall 9, the cooling room between the heat insulating partition walls 8 and 9 is the vegetable room 5, and the cooling room below the heat insulating partition wall 9 is the freezing room 6. And Further, the upper stage of the heat insulating partition 8 is further divided into two by the heat insulating partition 10, and the cooling chamber between the heat insulating partitions 8 and 10 is the switching room 3 and the ice making room 4 arranged side by side. The refrigerator 2 has a chilled room 1. The front of each cooling chamber is closed by an opening / closing door. A first evaporator 11 and a first blower fan 12 are arranged behind the vegetable compartment 5 via a heat insulating partition wall 9, and a second evaporator is placed behind the ice making room 4 (or the switching room 3). 13 and a second blower fan 14 are arranged, and a compressor 16 is installed in a lower machine room 15.
[0015]
The first evaporator 11 exchanges heat with the refrigerant sent from the compressor 16 to generate cool air, and the cool air is discharged to the vegetable room 5 and the freezing room 6 by the blower fan 12. The second evaporator 13 exchanges heat with the refrigerant sent from the compressor 16 to generate cool air, and the cool air is discharged by the blower fan 14 to the refrigerating room 2, the switching room 3 and the ice making room 4. Reference numeral 17 denotes a duct for circulating cool air by the blower fan 14, reference numeral 18 denotes a discharge port from the duct 17 to the refrigerator compartment 2, reference numeral 19 denotes a discharge port to the chilled room 1, and reference numeral 20 denotes a discharge port to the ice making room 4 (to the switching room 3). (Not shown). Reference numeral 21 denotes a discharge port to the vegetable room 5. In FIG. 1, the direction in which the cool air is discharged is indicated by an arrow, but the return path of the cool air to each of the evaporators 11 and 13 is not shown.
[0016]
As described above, in the present embodiment, the vegetable room 5 and the freezing room 6 and the switching room 3, the ice making room 4 and the refrigeration room 2 are completely insulated from the vegetable room 5 and the freezing room 6 by the heat insulating partition wall 8, so that the first evaporation The vessel 11 only cools the vegetable compartment 5 and the freezer compartment 6. Since the surroundings of the vegetable compartment 5 except the door side are covered by the heat insulating partition walls 8 and 9, it is possible to perform loose cooling in which vegetables are prevented from freezing by appropriately setting the opening area of the cool air discharge port 21. On the other hand, the second evaporator 13 cools the chilled room 1, the refrigeration room 2, the switching room 3, and the ice making room 4. At this time, by setting the evaporation temperature of the second evaporator 13 to the same level as that of the first evaporator 11 (for example, about -19 ° C.), the switching room 3, the ice making room 4, and the chilled room 1 are required. Sufficient cooling is provided.
[0017]
Further, in the conventional structure shown in FIG. 3, since the evaporator 34 is installed at the back of the refrigerator compartment 2, if the evaporator 34 and the refrigerator compartment 2 are not insulated, the cooling of the refrigerator compartment 2 will be excessive. However, in the present embodiment, the second evaporator 13 and the second blower fan 14 are installed at the back of the switching room 3 and the ice making room 4, so that the refrigeration room 2 has a conventional heat insulating structure. Is no longer needed. Further, since the first evaporator 11 and the blower fan 12 are installed at the back of the vegetable compartment 5, the duct structure for supplying cool air to the vegetable compartment 5 and the freezing compartment 6 is simplified. Further, when the switching room 3 is used for the second freezing room, a heat insulating structure on the back surface thereof is not required. Further, since the vegetable room 5 does not have a structure sandwiched between upper and lower sides by a cooling room in a minus temperature zone unlike the conventional structure, the cool air circulation structure can be simplified and its efficiency can be improved.
[0018]
【The invention's effect】
As described above, according to the present invention, there is an advantage that the circulation efficiency of the cool air is improved, which leads to energy saving, that the vegetable room can be prevented from being overcooled, and that the duct structure and the heat insulation treatment are simplified.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a refrigerator according to an embodiment of the present invention.
FIG. 2 is a front view of a conventional refrigerator-freezer.
FIG. 3 is a longitudinal sectional view of a conventional refrigerator-freezer.
[Explanation of symbols]
7: heat insulating box, 8, 9, 10: heat insulating partition wall, 11: first evaporator, 12: first blower fan, 13: second evaporator, 14: second blower fan

Claims

上段から下段にかけて冷蔵室、横並びの製氷室／切替室、野菜室、冷凍室が順次設けられ、且つ第１および第２の蒸発器を具備する冷凍冷蔵庫において、
前記冷蔵室および前記製氷室／切替室と前記野菜室および前記冷凍室とを断熱的に区画する第１の断熱仕切壁を設け、前記第１の蒸発器を前記野菜室および前記冷凍室用とし、前記第２の蒸発器を前記冷蔵室および前記製氷室／切替室用としたことを特徴とする冷凍冷蔵庫。In a refrigerator having a refrigerator room, a side-by-side ice making room / switching room, a vegetable room, and a freezing room sequentially provided from the upper stage to the lower stage, and including a first and a second evaporator,
A first heat insulating partition wall is provided to partition the refrigerator compartment and the ice making compartment / switching compartment and the vegetable compartment and the freezing compartment insulated, and the first evaporator is used for the vegetable compartment and the freezing compartment. A refrigerator having the second evaporator for the refrigerating room and the ice making room / switching room.

請求項１に記載の冷凍冷蔵庫において、
前記第１の蒸発器は、第２の断熱仕切壁を介して前記野菜室の背部に設置されていることを特徴とする冷凍冷蔵庫。The refrigerator-freezer according to claim 1,
The refrigerator according to claim 1, wherein the first evaporator is installed at a back of the vegetable compartment through a second heat insulating partition wall.

請求項１又は２に記載の冷凍冷蔵庫において、
前記第２の蒸発器は、前記製氷室／切替室の背部に設置され、前記第２の蒸発器で生成した冷気を前記冷蔵室に送るダクトが設けられているとを特徴とする冷凍冷蔵庫。The refrigerator-freezer according to claim 1 or 2,
The refrigerator according to claim 1, wherein the second evaporator is provided behind the ice making room / switching room, and is provided with a duct for sending cool air generated by the second evaporator to the refrigerator room.

請求項１乃至３のいずれか１つに記載の冷凍冷蔵庫において、
前記第１の断熱仕切壁は、冷凍冷蔵庫の全体を囲む断熱箱体への断熱処理と同時に断熱処理されていることを特徴とする冷蔵庫。The refrigerator-freezer according to any one of claims 1 to 3,
The refrigerator, wherein the first heat-insulating partition wall is heat-insulated at the same time as heat-insulating the heat-insulating box surrounding the entire refrigerator-freezer.