JPH05280853A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent defrosted water from being dropping into a refrigeration chamber by overlapping a roof on a feedback passage until water droplets on the upper surface of the roof are prevented from dropping into the feedback passage, and integrally providing a fin-shaped hydro-extraction on the tip end of the roof located on the upper portion of the feedback passage. CONSTITUTION:A feedback passage 17, which serves to return cold air cooling the side of a refrigeration chamber 3 to a condenser 10 is prevented from being located under a projection surface of the condenser 10. Thereby, defrosted water is prevented from entering the feedback passage 17 upon defrosting of the condenser 10. Accordingly, cold air lowering from the condenser 10 is prevented from directly entering the feedback passage 17 upon interruption of a refrigerator. Thereupon, the roof 18 serving to arrest the invasion of water droplets and cold air, and the fin-shaped hydro-extractor 18a serves to prevent water droplets from going around the back side of the roof 18 owing to surface tension. Thus, defrosted water dropping from the condenser 10 is prevented from entering the feedback passage 17 and is further prevented from dropping onto the refrigeration chamber 3.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は冷凍室背壁部に設置され
た冷却器下部に設置される露受皿に、冷凍室下部に位置
する冷蔵室より冷凍室側に循環冷気を戻す帰還路を備え
た冷蔵庫に関するもの。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a dew tray installed on the lower part of a cooler installed on the back wall of a freezing room with a return path for returning circulating cold air from the refrigerating room located on the lower part of the freezing room to the freezing room side. Things about the refrigerator provided.

【０００２】[0002]

【従来の技術】従来この種の構造を図３を用いて説明す
ると、２１は冷蔵庫本体、この本体２１は上部に冷凍室
２２下部に冷蔵室２３を有している。２４は先の冷凍室
２２と冷蔵室２３を形成する内箱であり、２５は外箱、
２６は断熱材を示す。２７は冷凍室２２と冷蔵室２３と
を区画する区画壁、２８は冷凍室の背壁に設置された冷
却器、２９はこの冷却器２８と冷凍室２２を仕切る仕切
板、３０は冷却器２８下部に設置された輻射形の除霜用
管ヒータ、３１は上記冷却器２８、除霜用管ヒータ３０
の下部に設置された露受皿、図には示してないが除霜
時、この露受皿３１が受けた除霜水は３１ａを経由して
外部に排出される。３２は上記露受皿３１と一体に形成
された帰還路、この帰還路３２は図には示してないが、
冷蔵室２３に強制循環された冷気の冷却器２８下部への
戻り通路である。従って、この帰還路３２の一端は冷蔵
室２３に他方端は冷却器２８下部に位置している。又こ
の帰還路３２の延長部には冷却器が位置している。３３
は帰還路３２上部に設けられた屋根である。この屋根３
３は帰還路３２及び露受皿３１と一体に形成されている
ため、屋根３３を帰還路３２に対し、オーバーラップさ
せようとするとこの部の金型（一般的に射出成形金型）
のスライド駒の動きは、屋根付近がＸのような動きであ
り、一端水平方向に動きその後上方向へ動くものであ
る。このため屋根３３は水平に形成せざるをえなかっ
た。３４はこの屋根３３の上面に貼られた断熱シート
で、この断熱シート３４は屋根３３の下面に結露するの
を防止している。尚、こ種従来例には実公昭６１−９３
３１号に示されるものがある。2. Description of the Related Art A conventional structure of this kind will be described with reference to FIG. 24 is an inner box that forms the freezing chamber 22 and the refrigerating chamber 23, and 25 is an outer box,
Reference numeral 26 indicates a heat insulating material. 27 is a partition wall that divides the freezer compartment 22 and the refrigerator compartment 23, 28 is a cooler installed on the back wall of the freezer compartment, 29 is a partition plate that separates the cooler 28 and the freezer compartment 22, and 30 is a cooler 28 A radiation type defrosting pipe heater installed at the lower portion, 31 is the cooler 28, and a defrosting pipe heater 30.
The dew pan installed at the lower part of the defroster, which is not shown in the figure, is defrosted, and the defrosted water received by the dew pan 31 is discharged to the outside via 31a. Reference numeral 32 denotes a return path integrally formed with the dew tray 31. The return path 32 is not shown in the figure,
This is a return passage to the lower part of the cooler 28 for the cold air forcedly circulated in the refrigerating chamber 23. Therefore, one end of this return path 32 is located in the refrigerating chamber 23 and the other end is located below the cooler 28. A cooler is located at the extension of the return path 32. 33
Is a roof provided above the return path 32. This roof 3
Since 3 is formed integrally with the return path 32 and the dew tray 31, when attempting to overlap the roof 33 with the return path 32, the mold of this part (generally an injection molding mold)
The movement of the slide piece is a movement like X in the vicinity of the roof, and the movement is horizontal in one direction and then upward. Therefore, the roof 33 had to be formed horizontally. A heat insulating sheet 34 is attached to the upper surface of the roof 33, and the heat insulating sheet 34 prevents dew condensation on the lower surface of the roof 33. In addition, the conventional example of this kind is Jikho Sho 61-93.
There is one shown in No. 31.

【０００３】[0003]

【発明が解決しようとする課題】かかる構成を有する従
来冷蔵庫に於いては、次に記述する如き問題点があっ
た。冷却器２８より滴下した除霜水が、帰還路３２中に
浸入しやすい。即ち帰還路３２上部に設けられ屋根３３
の上に滴下した除霜水の一部は、表面張力により、屋根
３３の下面にまわり、帰還路３２中に浸入し、冷蔵室２
３に滴下、或いは帰還路３２内にて霜となり、開口端３
２ａがその霜で塞がれ冷蔵庫の機能を失なってしまうと
いった要因にもなっていた。The conventional refrigerator having the above structure has the following problems. The defrost water dropped from the cooler 28 easily enters the return path 32. That is, the roof 33 provided above the return path 32
Part of the defrost water that has dripped on the surface of the roof 33 goes around the lower surface of the roof 33 due to the surface tension, and penetrates into the return path 32.
3 or frost is formed in the return path 32, and the opening end 3
It also became a factor that 2a was blocked by the frost and the function of the refrigerator was lost.

【０００４】本発明はかかる点に鑑みてなされたもので
ある。その目的とする所は上記問題点のない冷蔵庫を得
るものである。The present invention has been made in view of the above points. The purpose is to obtain a refrigerator without the above problems.

【０００５】[0005]

【課題を解決するための手段】本発明は、上記従来の課
題を解決するために、露受皿の壁面を利用し、露受皿と
一体に設けた冷気帰還路の開口部上端に位置する所に露
受皿中央側に突出する屋根を露受皿と一体に設け、屋根
上面の水滴を帰還路内に滴下させない迄に上記屋根を帰
還路に対し、オーバーラップさせると共に、帰還路上方
に位置する屋根先端にヒレ状の水切りを一体に設けたも
のである。In order to solve the above-mentioned conventional problems, the present invention utilizes the wall surface of the dew tray and is located at the upper end of the opening of the cold air return path provided integrally with the dew tray. A roof projecting toward the center of the dew tray is provided integrally with the dew tray, and the roof is overlapped with the return path until water drops on the roof top do not drip into the return path, and the roof tip located above the return path. It has a fin-like drainer.

【０００６】[0006]

【作用】本発明に於ける帰還路の屋根構造であった場
合、冷却器より屋根に滴下した除霜水は屋根の先端に達
してもヒレ状の水切りが一体に設けてあることにより、
表面張力が発生しにくいため、ヒレ状の水切りにより、
露受皿に滴下し、帰還路内に浸入することなく、このこ
とにより冷蔵室への滴下、及び帰還路開口端が霜で塞が
れてしまうということがなく、常に本来の機能を発揮す
るものである。In the case of the roof structure of the return path according to the present invention, the fin-shaped drainer is integrally provided even when the defrosting water dropped from the cooler onto the roof reaches the tip of the roof.
Since surface tension is less likely to occur, fin-shaped draining
Without dripping on the dew tray and infiltrating into the return path, this does not cause dripping into the refrigerating room and the end of the return path opening being blocked by frost, and always exhibits its original function. Is.

【０００７】[0007]

【実施例】以下本発明の詳細を図に示す一実施例で説明
すると、図１は本発明を備えた冷蔵庫の縦断面図、図２
は図１中の露受皿部付近の拡大図である。図に於いて１
は冷蔵庫本体、この冷蔵庫本体１は内部に冷凍室２冷蔵
室３を有している。４，５は上記室３，４の前面開口部
を閉塞する扉で、４は冷凍室扉、５は冷蔵室扉、６は上
記室３，４を形成する内箱を示す。先の冷蔵庫本体１は
この内箱６、断熱材７、外箱８等より構成されている。
９は上記冷凍室３と冷蔵室４間を区画する区画壁、１０
は冷却器で冷凍室２の背壁部に設置されている。１１は
冷却器１０を冷凍室２と仕切る仕切板、この仕切板１１
には吹出口１２、吸込口１３が設けられている。１９は
冷却器１０の上部に設置された冷気循環用の送風機、２
０はそのファンで先の吹出口１２に対向しており、冷却
器１０を経た冷気を冷凍室２側に吹き出す。冷凍室２に
吹出された冷気は冷凍室２を冷却後吸込口１３より再び
冷却器１０側に吸い込まれる。一方冷却器１０を経た冷
気の一部は仕切板１１に設けられた冷気通路（図示せ
ず）を経て吐出口１４より冷蔵室に至る。そして冷蔵室
３を冷却後矢印Ｐの如く循環し後述する帰還路を経由し
て冷却器１０に戻る。１５は冷却器１０の下部に設けら
れた輻射形の除霜用管ヒータ、１６は冷却器１０及び除
霜用管ヒータ１５の下部に設置された露受皿、この露受
皿１６は冷却器１０に付着した霜を先の除霜用管ヒータ
で溶した際の除霜水を受ける。尚、露受皿１６に溜る除
霜水は図には示してないが露受皿１６に設けた導水口１
６ａを経由して外部に排出されるものである。１７は帰
還路である。この帰還路１７は先の露受皿１６を一体に
形成されており一方の開口１７ａは冷蔵室３に臨み他方
の開口１７ｂは上記露受皿１６の後壁１６ｂ（断熱材７
に通している壁）の途中に設けられた開口１６ｃに接続
されている。従って、先の帰還露１７は図にも示す如く
断熱材７中に位置する。換言するとこの帰還路１７の延
長線上は断熱材７であり冷却器１０ではない。先に記述
した冷蔵室３の戻り冷気は、この帰還路１７の開口１７
ａより吸い込まれ、他方開口１７ｂより冷却器１０側に
吸い込まれるものである。１８は帰還路の一端が接続さ
れる露受皿１６の後壁１６ｂに設けられた屋根である。
１８ａは屋根１８の先端に屋根１８と一体に設けたヒレ
状の水切りであり、このヒレ状の水切り１８ａは屋根１
８の先端より、金型のスライド方向（この場合Ｚ方向）
に傾いた下方にむけて設けたものであり、その先端は
０．５ｍｍ程度の先細り形状をしているため、表面張力
が働きにくく、前記屋根１８の下面にまわろうとする水
滴を、露受皿１６へ滴下させ除霜水が帰還路１７に入る
のを防止するためのものである。勿論屋根１８及びヒレ
状の水切り１８ａは冷蔵庫運転停止時冷却器１０より降
下する冷気が帰還路１７に入るのもある程度阻止する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a longitudinal sectional view of a refrigerator equipped with the present invention.
FIG. 2 is an enlarged view of the vicinity of the dew tray portion in FIG. 1 in the figure
Is a refrigerator main body, and the refrigerator main body 1 has a freezer compartment 2 and a refrigerator compartment 3 therein. Reference numerals 4 and 5 denote doors for closing front opening portions of the chambers 3 and 4, reference numeral 4 denotes a freezer compartment door, 5 denotes a refrigerating compartment door, and 6 denotes an inner box forming the chambers 3 and 4. The refrigerator body 1 is composed of the inner box 6, the heat insulating material 7, the outer box 8 and the like.
9 is a partition wall that partitions the freezer compartment 3 and the refrigerator compartment 4 from each other.
Is a cooler and is installed on the back wall of the freezer compartment 2. Reference numeral 11 denotes a partition plate for partitioning the cooler 10 from the freezer compartment 2, and this partition plate 11
An outlet 12 and a suction port 13 are provided in the. Reference numeral 19 denotes a blower for circulating cold air, which is installed at the upper part of the cooler 10.
Reference numeral 0 denotes a fan that faces the air outlet 12 and blows cold air that has passed through the cooler 10 toward the freezer compartment 2. The cold air blown into the freezing compartment 2 is sucked into the cooler 10 side again through the suction port 13 after cooling the freezing compartment 2. On the other hand, a part of the cool air that has passed through the cooler 10 passes through a cool air passage (not shown) provided in the partition plate 11 and reaches the refrigerating chamber through the discharge port 14. After cooling the refrigerating chamber 3, it circulates as shown by the arrow P and returns to the cooler 10 via a return path described later. Reference numeral 15 is a radiation type defrosting tube heater provided in the lower part of the cooler 10, 16 is a dew tray installed under the cooler 10 and the defrosting tube heater 15, and this dew pan 16 is provided in the cooler 10. It receives defrost water when the frost that has adhered is melted by the previous defrosting tube heater. Although defrosting water accumulated in the dew tray 16 is not shown in the figure, the water inlet 1 provided in the dew tray 16
It is discharged to the outside via 6a. Reference numeral 17 is a return path. This return path 17 is formed integrally with the above-mentioned dew tray 16, one opening 17a faces the refrigerating chamber 3, and the other opening 17b is the rear wall 16b of the dew tray 16 (the heat insulating material 7).
It is connected to an opening 16c provided in the middle of a wall (through which Therefore, the return dew 17 is located in the heat insulating material 7 as shown in the figure. In other words, the extension of the return path 17 is the heat insulating material 7, not the cooler 10. The return cold air of the refrigerating compartment 3 described above is the opening 17 of the return path 17.
The air is sucked from a and is sucked from the opening 17b toward the cooler 10 side. Reference numeral 18 denotes a roof provided on the rear wall 16b of the dew tray 16 to which one end of the return path is connected.
Reference numeral 18a denotes a fin-shaped drainer provided integrally with the roof 18 at the tip of the roof 18, and the fin-shaped drainer 18a is the roof 1
From the tip of 8, slide direction of the mold (Z direction in this case)
Since the tip end has a tapered shape of about 0.5 mm, it is difficult for surface tension to work, and water droplets that tend to wind around the lower surface of the roof 18 are exposed. This is to prevent the defrosted water from entering the return path 17 by dropping. Of course, the roof 18 and the fin-shaped drainer 18a also prevent the cool air falling from the cooler 10 from entering the return path 17 to some extent when the refrigerator operation is stopped.

【０００８】かかる構成を有する冷蔵庫であった場合、
先にも記述した如く、冷蔵室３側を冷却した冷気を冷却
器１０に戻す帰還路１７が、先づ冷却器１０の投影面下
方にないことより、冷却器１０の除霜時、除霜水が帰還
路１７に入りにくいことは勿論、冷蔵庫の運転停止時冷
却器１０より降下した冷気が帰還路１７にダイレクトに
入ると言うことはないものである。勿論この時、屋根１
８は水滴、冷気の浸入を阻止するよう働らくものであ
り、またヒレ状の水切り１８ａは水滴が表面張力によ
り、屋根１８の裏側へまわろうとするのを阻止するよう
働らくものである。一方冷蔵室側より自然対流により帰
還路１７に入る湿気を含んだ空気は帰還路の途中で冷さ
れることなく冷却器１０に戻るものである。これは先に
も記述した如く帰還路１７が現場発泡の断熱材中に埋没
されているからである。In the case of a refrigerator having such a structure,
As described above, since the return path 17 for returning the cool air that has cooled the refrigerating chamber 3 side to the cooler 10 is not located below the projection surface of the cooler 10 in advance, the defrosting of the cooler 10 is performed. It goes without saying that it is difficult for water to enter the return path 17, and the cold air dropped from the cooler 10 when the refrigerator is not operating enters the return path 17 directly. Of course, at this time, roof 1
The numeral 8 serves to prevent the infiltration of water droplets and cold air, and the fin-shaped drainer 18a serves to prevent the water droplets from rolling toward the back side of the roof 18 due to surface tension. On the other hand, the moisture-containing air entering the return path 17 by natural convection from the refrigerating compartment side returns to the cooler 10 without being cooled in the middle of the return path. This is because, as described above, the return path 17 is buried in the heat insulating material that is foamed in situ.

【０００９】以上の理由により本発明の構成を有する冷
蔵庫であれば、先に記載した目的を確実に達成すること
が出来るものである。For the above reasons, the refrigerator having the structure of the present invention can surely achieve the above-mentioned object.

【００１０】[0010]

【発明の効果】本発明は以上説明した如き構造を有する
ものであるから、冷却器より滴下した除霜水が帰還路中
に浸入することなく、除霜水が冷蔵室に滴下するのを防
止できるものである。また、断熱シート等を用いること
なく帰還路の霜詰りを防止できるものである。Since the present invention has the structure as described above, the defrost water dropped from the cooler does not enter the return path and prevents the defrost water from dropping into the refrigerating chamber. It is possible. Further, it is possible to prevent frost clogging of the return path without using a heat insulating sheet or the like.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明を備えた冷蔵庫の縦断面図である。FIG. 1 is a vertical sectional view of a refrigerator equipped with the present invention.

【図２】図１中の露受皿部付近の拡大図である。FIG. 2 is an enlarged view of the vicinity of a dew tray portion in FIG.

【図３】従来例を示すもので露受皿部付近の拡大図であ
る。FIG. 3 shows a conventional example and is an enlarged view of the vicinity of a dew tray portion.

【符号の説明】[Explanation of symbols]

１…冷蔵庫本体 ２…冷凍室 ３…冷蔵室 ４，５…扉 ６…内箱 ７…断熱材 ８…外箱 ９…区画壁 １０…冷却器 １１…仕切板 １２…吹出口 １３…吸込口 １４…吐出口 １５…除霜用管ヒータ １６…露受皿 １７…帰還路 １８…屋根 １８ａ…ヒレ状の水切り １９…送風機 ２０…ファン DESCRIPTION OF SYMBOLS 1 ... Refrigerator main body 2 ... Freezing room 3 ... Refrigerating room 4, 5 ... Door 6 ... Inner box 7 ... Insulating material 8 ... Outer box 9 ... Partition wall 10 ... Cooler 11 ... Partition plate 12 ... Blowout port 13 ... Suction port 14 ... Discharge port 15 ... Defrosting tube heater 16 ... Dew tray 17 ... Return path 18 ... Roof 18a ... Fin-shaped drainer 19 ... Blower 20 ... Fan

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】露受皿の壁面を利用し、露受皿と一体に設
けた冷気帰還路の開口部上端に位置する所に露受皿中央
側に突出する屋根を露受皿と一体に設け、屋根上面の水
滴を帰還路内に滴下させない迄に上記屋根を帰還路に対
し、オーバーラップさせると共に帰還路上方に位置する
屋根先端にヒレ状の水切りを一体に設けたことを特徴と
する冷蔵庫。1. A roof projecting toward the center of the dew tray is provided integrally with the dew tray at a position located at the upper end of the opening of a cool air return path provided integrally with the dew tray, using the wall surface of the dew tray. The refrigerator is characterized in that the roof is overlapped with the return path and the fin-shaped drainer is integrally provided at the tip of the roof located above the return path before the water droplets of 1. are dropped into the return path.