JP3806861B2

JP3806861B2 - Freezer refrigerator

Info

Publication number: JP3806861B2
Application number: JP2000279360A
Authority: JP
Inventors: 昌幸澤田石
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2000-09-14
Filing date: 2000-09-14
Publication date: 2006-08-09
Anticipated expiration: 2020-09-14
Also published as: JP2002090043A

Description

【０００１】
【発明の属する技術分野】
本発明は冷凍冷蔵庫に係り、特に、冷凍冷蔵庫における冷蔵室蒸発器の除霜水を庫外へ排出する構造に関する。
【０００２】
【従来の技術】
従来の冷凍冷蔵庫における除霜水の排水経路の構造としては、実開昭６２−３１２７９号公報に示されているものがある。
【０００３】
以下、上記従来の除霜水の排水経路の構造について説明する。冷凍冷蔵庫の上部には冷凍室が設けられ、冷凍室の下部には冷蔵室が設けられている。冷凍冷蔵庫の外箱と内箱との間には断熱材が充填されている。また、冷凍室と冷蔵室との間は断熱仕切体で区画されている。
【０００４】
冷凍室の後方には蒸発器が設けられ、また、冷気を上記各室に送るファン、蒸発器の下方に設けた除霜水受皿、除霜水受皿の底に接続したアルミ等のパイプ、パイプの下端に接続した導水管等が設けられている。導水管にはドレンホースが連結され、ドレンホースや導水管は断熱材に埋設されている。ドレンホースから流出した除霜水は蒸発皿で受けるようになっている。
【０００５】
蒸発器には加熱して除霜するヒータが設けられ、ヒータで加熱された蒸発器からの除霜水は、除霜水受皿から断熱仕切体を貫通するパイプを経て、導水管、ドレンホースに至り、蒸発皿へ排水される。蒸発皿に集められた除霜水は、圧縮機から排出される熱によって外気中へ蒸発させられる。
【０００６】
【発明が解決しようとする課題】
しかしながら、上記従来の除霜水の排水経路構成は、冷凍室からの冷気による排水経路の着霜防止のため、蒸発器の近傍に設けた除霜用のヒータを利用して、その熱を伝えるアルミ等の熱良導体製のパイプを配設したり、また導水管を使用することで、部品点数が増えるという欠点があった。
【０００７】
また、上記のように、パイプ、導水管、ドレンホースの各連結部が増えることは、断熱性能のよい発泡ウレタンの固化する前は、ほぼ水と同様の流体であり、ウレタン漏れや水漏れを防止するため、より精度の高い取付作業が要求されるという欠点があった。
【０００８】
さらに、導水管を使用せずにドレンホースをパイプに接続させる構造の場合でも、接続部の嵌合があまく、ウレタンが侵入し除霜水がつまる場合や、組立の工程途中におけるドレンホースのはずれがあった。また、はずれないように嵌合をきつくして、取付作業性が悪くなるといった欠点もあった。
【０００９】
本発明の課題は、上記従来の問題点を解決するもので、冷凍冷蔵庫において、排水経路の連結を確実にし、水洩れやウレタン侵入によるつまりをなくし、かつ取付作業性を向上させることである。
【００１０】
【課題を解決するための手段】
上記課題を解決するために、本発明の冷凍冷蔵庫は、冷蔵室と冷凍室を仕切る仕切壁の上と下の部品の間にゴム等の弾性部材を取付け、その弾性部材と仕切上に設けた排水口との間にドレンパイプを圧入接続して除霜水の排水経路としたものである。
【００１１】
さらに、ドレンパイプに設けた突起と仕切下に設けた嵌合爪により、連結部のシール性と取付作業性の優れた除霜水の排水経路を提供できる。また、ドレンパイプを圧入接続する際、弾性部材の上端に位置ずれ防止としてのフランジを設けることにより、連結部のシール性をより向上させることができる。
【００１２】
【発明の実施の形態】
以下、本発明の冷凍冷蔵庫において、除霜水の排水経路の実施形態を、図面を参照して説明する。図１は冷凍冷蔵庫の一実施形態を示す概略縦断面図である。図２は同実施形態の要部断面図である。
【００１３】
図１、２において、冷凍冷蔵庫の外箱１と内箱４との間には、断熱材５が充填されている。また、冷凍冷蔵庫の下部には冷凍室２、冷凍室２の上部には冷蔵室３ａおよび野菜室３ｂが設けられ、野菜室３ｂと冷凍室２とは、上仕切材６ａと下仕切材６ｂとからなる仕切で区画されて、仕切内部は断熱材５が充填されている。
【００１４】
機械室１３には圧縮機１４、蒸発皿１５などが設けられ、冷凍室２の後方には冷凍室蒸発器１６、冷蔵室３の後方には冷蔵室蒸発器１７を設置し、下方に除霜水受皿６ｃを配置している。そのほか、冷凍室冷却用ファン１８、冷蔵室冷却用ファン１９か、それぞれ各室に冷気を送り冷却する。
【００１５】
そして、本実施形態では、図２に詳細を示すように、上仕切材６ａと一体成形した除霜水受皿６ｃに連なって円筒状の排水口６ｆが形成され、排水口６ｆをドレンパイプ１２に挿入して連結し、さらに、その連結部の外周に、円筒状の弾性部材２０を介在させて、下仕切材６ｂの一部に形成した円筒状の支持部６ｇ内に固定し、これらは断熱材５に埋設されている。
【００１６】
この弾性部材２０は、上端に少なくとも本体径より大きい径を有するフランジ２０ａが形成され、また、あらかじめ排水口６ｆの上側に設けたリブ６ｄに当接するまで圧入されるようになっている。
【００１７】
また、排水口６ｆと連結するドレンパイプ１２の外周には、抜け防止用の三角形状の突起１２ａと、その突起１２ａの下に円ボス状の突起１２ｂが形成されている。また、下仕切材６ｂの支持部６ｇには爪状の係止部６ｅが形成され、この係止部６ｅとドレンパイプ１２の突起１２ｂとが係合するようになっている。
【００１８】
したがって、ドレンパイプ１２が挿入される際は、下仕切材６ｂの係止用爪６ｅが、ドレンパイプの突起１２ｂを乗り越え、かつ突起１２ａが円筒状の弾性部材２０の内周に圧入されるため、ドレンパイプ１２が下へ抜けない構造となっている。
【００１９】
そのため、弾性部材２０は、排水口６ｆを挿入したドレンパイプ１２と、下仕切材６ｂの支持部６ｇとの間に挟まれて、その周囲が固化前のウレタンに露出し状態で設置されており、シール性が向上し、水とほぼ同様の流体である固化前のウレタン（断熱材）５の洩れや、水漏れを防止できる。
【００２０】
以上説明したように、本実施形態によれば、冷蔵室あるいは野菜室を仕切る上仕切材と下仕切材の部品間にゴム等の弾性部材を配設し、その弾性部材と上仕切材に設けた流出口の間にドレンパイプを圧入接続することにより、ウレタン洩れに対するシール性を確保し取付作業性を向上させることができる。また、弾性のある部材により、パイプや支持部との接合部を覆うことによって、シール性を向上できる。
【００２１】
また、弾性部材の上端に、本体の外径より大きいフランジを設け、上仕切材に形成したリブに突当て、さらに、下仕切材の嵌合爪を円筒状の中心方向に配置し、ドレンパイプに三角状の突起をつけることにより、流出口外径に対する弾性部材の圧縮力がバラツキなく保たれ、ウレタン洩れに対するシール信頼性をより向上させ、作業工程中の外圧に対する抜け防止も図ることが可能となる。
【００２２】
ここで、本発明の参考例を、図３および図４を参照しながら説明する。図３は冷凍冷蔵庫の概略縦断面図、図４は同除霜水の排水経路の要部断面図である。なお、図１および図２と同一構造部分については同一符号を付す。
【００２３】
図３および図４において、冷凍冷蔵庫の外箱１と内箱４との間には断熱材５が充填されている。冷凍冷蔵庫の上部に設けた冷凍室２と、冷凍室２の下部に設けた冷蔵室３とは、断熱仕切体６で区画されている。
【００２４】
冷凍室２の後方には、蒸発器７および冷気を各室に送るファン８などが設置されている。さらに、蒸発器７の下方には、蒸発器７を加熱して除霜するヒータ７ａが設けられている。
【００２５】
また、蒸発器７の下方には、除霜水受皿９、除霜水受皿９の底に接続したアルミ等のパイプ１０、パイプ１０の下端に接続した導水管１１等が配置され、導水管１１にはドレンホース１２が連結されて、前記断熱材５に埋設されている。また、機械室１３、圧縮機１４や、ドレンホース１２から流出した除霜水を受ける蒸発皿１５などが配置されている。
【００２６】
上記冷凍冷蔵庫の動作を説明する。ヒータ７ａで加熱された蒸発器７からの除霜水は、矢印で示すように、除霜水受皿９から断熱仕切体６を貫通するパイプ１０を経て、導水管１１、ドレンホース１２に至り、蒸発皿１５へ排水される。次いで、蒸発皿１５に集められた除霜水は、圧縮機１４から排出される熱によって外気中へ蒸発させられる。
【００２７】
しかしながら、上記除霜水の排水経路の構成は、冷凍室２からの冷気による排水経路の着霜防止のため、蒸発器７の近傍に設けた除霜用のヒータ７ａを利用して、その熱を伝えるアルミ等の熱良導体製のパイプ１０を配設したり、また導水管１１を使用したりしている。また上記のように、パイプ１０、導水管１１、ドレンホース１２等の各連結部が増えることで、水洩れ防止のために、より精度の高い取付作業が要求される。
【００２８】
さらに、導水管１１を使用せずに、ドレンホース１２をパイプ１０に接続させる構造においては、接続部の嵌合に隙間があると、水同然の流体状であるウレタン６が除霜水の通路に侵入して固まり、除霜水がつまる場合や、組立の工程途中におけるドレンホース１２のはずれなどを防止する必要がある。
【００２９】
本発明の実施形態によれば、上記参考例で説明した排水経路の連結を確実にし、水洩れやウレタン侵入による詰りを無くし、かつ取付作業性を向上させることができる。
【００３０】
【発明の効果】
上述のとおり、本発明によれば、冷凍冷蔵庫において、排水経路の連結にゴム等の弾性部材を介在させることにより、確実な連結が可能となり、水洩れが防止され、ウレタン侵入による詰りが防止され、かつ取付作業性をより向上させることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態である冷凍冷蔵庫の概略縦断面図。
【図２】図１の要部断面図。
【図３】参考例の冷凍冷蔵庫の概略縦断面図。
【図４】図３の要部断面図。
【符号の説明】
１外箱
２冷凍室
３冷蔵室
４内箱
５発泡断熱材
６ａ上仕切材
６ｂ下仕切材
６ｃ除霜水受皿
６ｄリブ
６ｅ嵌合爪
６ｆ排水口
６ｇ支持部
７ａヒータ
１２ドレンパイプ
１２ａ、１２ｂ突起
１３機械室
１４圧縮機
１５蒸発皿
１６冷凍室冷却器
１７冷蔵室冷却器
１８冷凍室ファン
１９冷蔵室ファンモータ
２０弾性部材
２０ａフランジ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator-freezer, and more particularly, to a structure for discharging defrosted water from a refrigerator in a refrigerator-freezer to the outside of the refrigerator.
[0002]
[Prior art]
As a structure of a defrosted water drainage path in a conventional refrigerator-freezer, there is one disclosed in Japanese Utility Model Publication No. 62-31279.
[0003]
Hereinafter, the structure of the conventional defrost water drainage path will be described. A freezer room is provided in the upper part of the freezer and a refrigerator room is provided in the lower part of the freezer room. A heat insulating material is filled between the outer box and the inner box of the refrigerator-freezer. Moreover, the freezer compartment and the refrigerator compartment are divided by the heat insulation partition.
[0004]
An evaporator is provided at the rear of the freezer compartment, a fan that sends cold air to each of the above chambers, a defrost water tray provided below the evaporator, and a pipe made of aluminum or the like connected to the bottom of the defrost water tray A conduit pipe connected to the lower end of the pipe is provided. A drain hose is connected to the water conduit, and the drain hose and the water conduit are embedded in the heat insulating material. The defrost water flowing out from the drain hose is received by the evaporating dish.
[0005]
The evaporator is provided with a heater for defrosting by heating, and the defrosted water from the evaporator heated by the heater passes through the pipe passing through the heat insulating partition from the defrosting water tray to the water conduit and drain hose. And drained into the evaporating dish. The defrost water collected in the evaporating dish is evaporated into the outside air by the heat discharged from the compressor.
[0006]
[Problems to be solved by the invention]
However, the conventional defrosting water drainage path configuration transmits heat using a defrosting heater provided in the vicinity of the evaporator in order to prevent frosting of the drainage path due to cold air from the freezer compartment. Disposing a pipe made of a good thermal conductor such as aluminum or using a water conduit has the disadvantage of increasing the number of parts.
[0007]
In addition, as described above, the increase in the number of connecting parts of pipes, water conduits, and drain hoses is almost the same as water before solidifying urethane foam with good heat insulation performance. In order to prevent this, there has been a drawback that a more accurate mounting operation is required.
[0008]
Furthermore, even when the drain hose is connected to the pipe without using a water conduit, the connection part fits well, urethane enters and defrost water gets clogged, or the drain hose is disconnected during the assembly process. was there. In addition, there is a drawback that the fitting workability is deteriorated by tightening the fitting so as not to come off.
[0009]
An object of the present invention is to solve the above-mentioned conventional problems, and in a refrigerator-freezer, to ensure the connection of drainage paths, eliminate clogging due to water leakage and urethane intrusion, and improve the mounting workability.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the refrigerator-freezer of the present invention is provided with an elastic member such as rubber between the upper and lower parts of the partition wall separating the refrigerator compartment and the freezer compartment, and the drainage port provided on the elastic member and the partition. A drain pipe is press-fitted between the two and used as a defrost water drainage path.
[0011]
Furthermore, the drainage path of the defrost water excellent in the sealing performance and attachment workability | operativity of a connection part can be provided with the protrusion provided in the drain pipe, and the fitting nail | claw provided in the partition. In addition, when the drain pipe is press-fitted and connected, the sealing performance of the connecting portion can be further improved by providing a flange for preventing displacement from the upper end of the elastic member.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, in the refrigerator-freezer of this invention, embodiment of the drainage path of defrost water is described with reference to drawings. FIG. 1 is a schematic longitudinal sectional view showing an embodiment of a refrigerator-freezer. FIG. 2 is a cross-sectional view of a main part of the same embodiment.
[0013]
1 and 2, a heat insulating material 5 is filled between the outer box 1 and the inner box 4 of the refrigerator-freezer. A freezer compartment 2 is provided at the bottom of the freezer, and a refrigerator compartment 3a and a vegetable compartment 3b are provided above the freezer compartment 2. The vegetable compartment 3b and the freezer compartment 2 are divided into an upper partition material 6a and a lower partition material 6b. The inside of the partition is filled with a heat insulating material 5.
[0014]
The machine room 13 is provided with a compressor 14, an evaporating dish 15, and the like. A freezer compartment evaporator 16 is installed behind the freezer compartment 2, a refrigerator compartment evaporator 17 is installed behind the refrigerator compartment 3, and defrosting is performed below. A water tray 6c is arranged. In addition, cool air is sent to each of the freezer compartment cooling fan 18 and the refrigerator compartment cooling fan 19 for cooling.
[0015]
In the present embodiment, as shown in detail in FIG. 2, a cylindrical drain port 6 f is formed continuously with the defrost water tray 6 c integrally formed with the upper partition member 6 a, and the drain port 6 f is connected to the drain pipe 12. Further, the cylindrical elastic member 20 is interposed on the outer periphery of the connecting portion and fixed in a cylindrical support portion 6g formed in a part of the lower partitioning member 6b. Embedded in the material 5.
[0016]
The elastic member 20 is formed with a flange 20a having a diameter larger than at least the main body diameter at the upper end, and is press-fitted until it abuts against a rib 6d previously provided above the drain port 6f.
[0017]
Further, on the outer periphery of the drain pipe 12 connected to the drain port 6f, a triangular protrusion 12a for preventing the drop and a circular boss-shaped protrusion 12b are formed under the protrusion 12a. Further, a claw-like locking portion 6e is formed on the support portion 6g of the lower partition member 6b, and the locking portion 6e and the projection 12b of the drain pipe 12 are engaged with each other.
[0018]
Therefore, when the drain pipe 12 is inserted, the locking claws 6e of the lower partition member 6b get over the drain pipe protrusion 12b, and the protrusion 12a is press-fitted into the inner periphery of the cylindrical elastic member 20. The drain pipe 12 is structured so as not to come down.
[0019]
Therefore, the elastic member 20 is sandwiched between the drain pipe 12 into which the drain port 6f is inserted and the support portion 6g of the lower partitioning member 6b, and the periphery thereof is installed in a state exposed to urethane before solidification. The sealing property is improved, and leakage of urethane (insulating material) 5 before solidification, which is a fluid substantially similar to water, can be prevented.
[0020]
As described above, according to the present embodiment, an elastic member such as rubber is disposed between the upper partition member and the lower partition member that partitions the refrigerator compartment or the vegetable compartment, and the elastic member and the upper partition member are provided. By connecting the drain pipe between the outlets, the sealing performance against urethane leakage can be ensured and the mounting workability can be improved. Further, the sealing property can be improved by covering the joint portion with the pipe and the support portion with an elastic member.
[0021]
Also, a flange larger than the outer diameter of the main body is provided at the upper end of the elastic member, abuts against the rib formed on the upper partition material, and the fitting claws of the lower partition material are arranged in the cylindrical central direction, and the drain pipe By attaching a triangular protrusion to the elastic member, the compressive force of the elastic member against the outer diameter of the outlet can be kept uniform, sealing reliability against urethane leaks can be further improved, and it is possible to prevent disconnection against external pressure during the work process. It becomes.
[0022]
Here, a reference example of the present invention will be described with reference to FIGS. FIG. 3 is a schematic vertical cross-sectional view of the refrigerator-freezer, and FIG. 4 is a cross-sectional view of the main part of the defrost water drainage path. In addition, the same code | symbol is attached | subjected about the same structure part as FIG. 1 and FIG.
[0023]
3 and 4, a heat insulating material 5 is filled between the outer box 1 and the inner box 4 of the refrigerator-freezer. The freezer compartment 2 provided in the upper part of the freezer and the refrigerator compartment 3 provided in the lower part of the freezer compartment 2 are partitioned by a heat insulating partition 6.
[0024]
Behind the freezer compartment 2 are installed an evaporator 7 and a fan 8 for sending cool air to each compartment. Further, below the evaporator 7, a heater 7 a for heating the evaporator 7 and defrosting is provided.
[0025]
Further, below the evaporator 7, a defrosting water receiving tray 9, a pipe 10 made of aluminum or the like connected to the bottom of the defrosting water receiving tray 9, a water conduit 11 connected to the lower end of the pipe 10, and the like are disposed. A drain hose 12 is connected to the heat insulating material 5. Moreover, the machine room 13, the compressor 14, the evaporating dish 15 which receives the defrost water which flowed out from the drain hose 12, etc. are arrange | positioned.
[0026]
The operation of the refrigerator-freezer will be described. The defrosted water from the evaporator 7 heated by the heater 7a reaches the water conduit 11 and the drain hose 12 through the pipe 10 penetrating the heat insulating partition 6 from the defrosted water receiving tray 9 as shown by the arrow, It is drained to the evaporating dish 15. Next, the defrost water collected in the evaporating dish 15 is evaporated into the outside air by the heat discharged from the compressor 14.
[0027]
However, the structure of the drainage path of the defrosted water uses the heater 7a for defrosting provided near the evaporator 7 in order to prevent frosting of the drainage path due to cold air from the freezer compartment 2, and its heat. A pipe 10 made of a good thermal conductor such as aluminum is provided, or a water conduit 11 is used. Further, as described above, an increase in the number of connecting portions such as the pipe 10, the water conduit 11, the drain hose 12 and the like requires a more accurate mounting operation in order to prevent water leakage.
[0028]
Further, in the structure in which the drain hose 12 is connected to the pipe 10 without using the water conduit 11, if there is a gap in the fitting of the connecting portion, the urethane 6 that is a fluid like water is a passage of defrost water. It is necessary to prevent the drain hose 12 from being detached when the defrosted water is clogged by entering into the water and the defrost water is clogged.
[0029]
According to the embodiment of the present invention, the connection of the drainage paths described in the above reference example can be ensured, clogging due to water leakage and urethane intrusion can be eliminated, and the mounting workability can be improved.
[0030]
【The invention's effect】
As described above, according to the present invention, in the refrigerator-freezer, by connecting an elastic member such as rubber to the connection of the drainage path, a reliable connection is possible, water leakage is prevented, and clogging due to urethane intrusion is prevented. In addition, the mounting workability can be further improved.
[Brief description of the drawings]
FIG. 1 is a schematic longitudinal sectional view of a refrigerator-freezer according to an embodiment of the present invention.
2 is a cross-sectional view of the main part of FIG.
FIG. 3 is a schematic vertical sectional view of a refrigerator-freezer of a reference example.
4 is a cross-sectional view of the main part of FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer box 2 Freezing room 3 Refrigerating room 4 Inner box 5 Foam heat insulating material 6a Upper partition material 6b Lower partition material 6c Defrost water tray 6d Rib 6e Fitting claw 6f Drain port 6g Support part 7a Heater 12 Drain pipe 12a, 12b Protrusion 13 Machine room 14 Compressor 15 Evaporating dish 16 Freezer room cooler 17 Cold room cooler 18 Freezer room fan 19 Cold room fan motor 20 Elastic member 20a Flange

Claims

A freezer compartment and another storage compartment , and a cooler for supplying cold air to each of the chambers behind one or both of the chambers , a defrosting water outlet and a drain pipe of the cooler; In the refrigerator refrigerator in which the drain pipe is sandwiched between the elastic member installed on the outer periphery of the drain port and the drain port, and the foamed heat insulating material is filled around the connection unit. The freezer compartment and the storage compartment are partitioned by a partition filled with a foam heat insulating material between the upper partition member and the lower partition member, and the connecting portion is a cylindrical shape integrally formed with the upper partition member The drainage port and a cylindrical support part integrally formed with the lower partition material and disposed on the outer periphery of the drainage port have a double pipe shape, and the gap between the support part and the drain pipe A refrigerator-freezer characterized by interposing an elastic member.

The refrigerator according to claim 1, wherein the elastic member has a flange having a diameter larger than at least an outer diameter of the cylinder at an upper end.

3. A locking part is formed in the inner radial direction at the lower end part of the support part, and a flange-like projection that engages with the locking part is formed at the outer peripheral part of the drain pipe. The refrigerator-freezer as described in.

The refrigerator-freezer according to any one of claims 1 to 3, wherein a retaining protrusion that abuts on the elastic member is formed on an outer peripheral portion of a tip of the drain pipe.

A freezer compartment and another storage compartment , and a cooler for supplying cold air to each of the chambers behind one or both of the chambers , a defrosting water outlet and a drain pipe of the cooler; In the refrigerator refrigerator in which the drain pipe is sandwiched between the elastic member installed on the outer periphery of the drain port and the drain port, and the foamed heat insulating material is filled around the connection unit. A refrigerator-freezer characterized in that a retaining protrusion that abuts against the elastic member is formed on the outer periphery of the end of the drain pipe.