JP2008249292A

JP2008249292A - Refrigerator

Info

Publication number: JP2008249292A
Application number: JP2007093262A
Authority: JP
Inventors: Masashi Yuasa; 雅司湯浅; Yoshito Kimura; 義人木村; Keiichi Takase; 恵一高瀬
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2007-03-30
Filing date: 2007-03-30
Publication date: 2008-10-16
Anticipated expiration: 2027-03-30
Also published as: JP4867758B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator having high freshness keeping capacity capable of improving freshness keeping performance of food, by restraining drying of the food except for a high load, by quickly cooling the inside of a refrigeration chamber in the high load, in the refrigerator having the refrigeration chamber cooled by a direct cooling method and a freezing chamber cooled by an indirect cooling method. <P>SOLUTION: Cold air in the freezing chamber 41 or cold air of exchanging heat with an evaporator 53 for the freezing chamber, is circulated in the refrigeration chamber 21 by a freezing chamber fan 52, and the refrigeration chamber 21 can be quickly cooled by performing direct cooling of a cooling wall surface 20 in the refrigeration chamber 21 in the high load and indirect cooling for circulating the cold air of the freezing chamber 41 or the evaporator 53 for the freezing chamber to the refrigeration chamber 21, by controlling a cold air quantity circulated by an opening-closing damper 36 opening and closing by detecting the temperature of the refrigeration chamber 21, and the opening-closing damper 36 is closed except for the high load, and the drying of thee food can be restrained only by the direct cooling of the cooling wall surface 20, and the freshness keeping performance can be improved while maintaining humidity keeping performance of the food. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、直接冷却方式にて冷却される冷蔵室と、間接冷却方式にて冷却される冷凍室を有する冷蔵庫に関するものである。 The present invention relates to a refrigerator having a refrigerating room cooled by a direct cooling method and a freezing room cooled by an indirect cooling method.

従来、この種の冷蔵庫は、圧縮機から吐出された冷媒が凝縮器、三方弁、減圧器、蒸発器を通過し、再び圧縮機に戻る冷凍サイクルを構成し、蒸発器で冷却された冷却壁面により庫内を冷却する直接冷却式と、蒸発器で冷却された冷気を庫内へ循環させて庫内を冷却する間接冷却式がある（例えば、特許文献１参照）。 Conventionally, this type of refrigerator has a refrigeration cycle in which refrigerant discharged from a compressor passes through a condenser, a three-way valve, a decompressor, and an evaporator and returns to the compressor again, and is cooled by the evaporator. There are a direct cooling type that cools the inside of the box by the above, and an indirect cooling type that cools the inside of the box by circulating the cool air cooled by the evaporator into the box (for example, see Patent Document 1).

以下、図面を参照しながら上記従来の冷蔵庫を説明する。 Hereinafter, the conventional refrigerator will be described with reference to the drawings.

図１１は、特許文献１に記載された従来の冷蔵庫の概略断面図を示すものである。図１１に示すように、従来の冷蔵庫は、断熱効果のある仕切り板１２１によって、冷蔵ゾーン１２２と冷凍ゾーン１２３とが上下に区画され、さらに、冷蔵ゾーン１２２内は仕切り板１２４によって、冷蔵室２１と野菜室１２４ａとが上下に区画形成されている。また、冷凍ゾーン１２３内では、仕切り板１２５によって、第１冷凍室１２６と第２冷凍室１２７にそれぞれ仕切られている。そして、冷蔵室２１の内箱５壁面に冷却パイプ１２８が配置され、冷凍ゾーン１２３背面には蒸発器５３と冷凍室ファン５２を備えた構成となっている。
特開２０００−０２８２５７号公報 FIG. 11 is a schematic cross-sectional view of a conventional refrigerator described in Patent Document 1. As shown in FIG. As shown in FIG. 11, in the conventional refrigerator, a refrigeration zone 122 and a freezing zone 123 are vertically divided by a partition plate 121 having a heat insulating effect. And the vegetable compartment 124a are vertically partitioned. In the freezing zone 123, the first freezer compartment 126 and the second freezer compartment 127 are partitioned by a partition plate 125, respectively. And the cooling pipe 128 is arrange | positioned at the inner case 5 wall surface of the refrigerator compartment 21, and it has the structure provided with the evaporator 53 and the freezer compartment fan 52 in the freezing zone 123 back surface.
JP 2000-028257 A

しかしながら、上記従来の構成では、高外気高湿度での冷蔵室扉の開閉回数が多い時や保存食品が大量に投入されるなど、高負荷時に急速な冷却が必要な場合、冷凍能力を向上するため冷蔵室の蒸発温度を低下しなければならず、冷蔵室循環用ファンを採用しているため、冷蔵室の蒸発器もしくは冷却壁面の着霜量が多くなり、蒸発器もしくは冷却壁面の冷凍能力がすぐに低下してしまう。また、冷凍能力を戻すため、除霜を行う必要が生じ、頻繁に冷蔵室の冷却を停止する必要がある。したがって、冷蔵室の高負荷時、冷蔵室の食品を急速に冷やすため、より冷凍能力を必要とするときに、着霜による冷凍能力劣化、除霜のための頻繁な冷却停止により、冷蔵室の蒸発器もしくは冷却壁面の冷凍能力を充分に発揮できないという課題を有していた。 However, the above conventional configuration improves the refrigeration capacity when rapid cooling is required at high loads, such as when the number of times the refrigeration room door is opened and closed in high outside air and high humidity, or when a large amount of stored food is introduced. Therefore, the evaporating temperature of the refrigerator compartment must be lowered, and since the fan for circulating the refrigerator compartment is adopted, the amount of frost formation on the evaporator or cooling wall in the refrigerator compartment is increased, and the refrigerating capacity of the evaporator or cooling wall is increased. Will soon drop. Further, in order to return the refrigeration capacity, it is necessary to perform defrosting, and it is necessary to frequently stop cooling of the refrigerator compartment. Therefore, in order to quickly cool the food in the refrigerator compartment when the refrigerator compartment is under heavy load, when more freezing capacity is required, the refrigeration capacity deteriorates due to frost formation, frequent cooling stops for defrosting, It had the subject that the refrigerating capacity of an evaporator or a cooling wall surface could not be fully demonstrated.

本発明は上記従来の課題を解決するもので、急速な庫内の冷却を可能とするとともに、食品の乾燥も抑制し、使い勝手の良い冷蔵庫を提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and to provide a refrigerator that is easy to use while allowing rapid cooling of the interior and also suppressing drying of food.

上記従来の課題を解決するために、本発明の請求項１にあっては、直接冷却方式にて冷却される冷蔵室と、間接冷却方式にて冷却される冷凍室を備えたものにおいて、冷凍室もしくは冷凍室冷却風路と冷蔵室を連通させる風路を設け、前記連通風路に開閉ダンパーを設置したものである。 In order to solve the above-described conventional problems, according to claim 1 of the present invention, a refrigeration chamber cooled by a direct cooling method and a freezing chamber cooled by an indirect cooling method are provided. An air passage that communicates the cooling air passage of the room or the freezer compartment and the refrigerator compartment is provided, and an open / close damper is installed in the communication air passage.

これによって、高外気高湿度での冷蔵室扉の多数の開閉や保存食品が大量に投入されるなどの高負荷時には、開閉ダンパーを開かせ、冷凍室もしくは冷凍室冷却用蒸発器からの冷気を冷蔵室に送り、冷蔵室の蒸発器をベースに構成された冷却壁面と、冷凍室もしくは冷凍室冷却用蒸発器の冷気の両方から冷蔵室庫内を急速に冷却することができる。また、庫内温度が所定温度内に安定すれば、開閉ダンパーを閉じて冷蔵室の冷却壁面のみの冷却とし、食品の乾燥を抑制することが可能となる。 As a result, the open / close damper is opened at the time of high loads such as a large number of opening and closing of the refrigerator compartment door in high outside air and high humidity and a large amount of stored food is thrown in, and cool air from the freezer compartment or the freezer compartment cooling evaporator is opened. The inside of the refrigerator compartment can be rapidly cooled from both the cooling wall configured based on the evaporator of the refrigerator compartment and the cold air of the freezer compartment or the evaporator for cooling the freezer compartment. Moreover, if the internal temperature is stabilized within a predetermined temperature, the open / close damper is closed to cool only the cooling wall surface of the refrigerator compartment, and drying of food can be suppressed.

また、本発明の請求項２にあっては、請求項１に記載の発明において、冷蔵室の冷却壁面の除霜中、冷凍室もしくは冷凍室冷却用蒸発器の冷気を冷蔵室へ送風する制御を行なう。 According to claim 2 of the present invention, in the invention according to claim 1, during the defrosting of the cooling wall surface of the refrigeration room, control is performed to blow cool air from the freezer compartment or the freezer compartment cooling evaporator to the refrigeration compartment. To do.

これによって、請求項１に記載の発明の効果に加え、冷蔵室の冷却壁面の除霜中すなわち冷蔵室の冷却壁面の冷却壁面での冷却がない場合でも、冷凍室もしくは冷凍室冷却用蒸発器の冷気を冷蔵室に送風することで、冷蔵室の冷却を維持・継続させることができる。 Thus, in addition to the effect of the invention according to claim 1, even when the cooling wall surface of the refrigerator compartment is being defrosted, that is, when the cooling wall surface of the refrigerator wall is not cooled, the freezer compartment or evaporator for cooling the freezer compartment The cooling of the refrigerator compartment can be maintained and continued by blowing the cool air to the refrigerator compartment.

また、本発明の請求項３にあっては、請求項１または２に記載の発明において、冷蔵室の内箱と蒸発器で構成した冷却壁面から、蒸発器を冷蔵室の内箱から分離し、冷却パイプを裏面に貼り付けた熱伝導性が良い化粧板（例えばアルミプレート）を冷蔵室冷却器として冷蔵室内に設置する。 According to claim 3 of the present invention, in the invention according to claim 1 or 2, the evaporator is separated from the inner box of the refrigerator compartment from the cooling wall surface constituted by the inner box of the refrigerator compartment and the evaporator. Then, a decorative plate (for example, an aluminum plate) having good thermal conductivity with a cooling pipe attached to the back surface is installed in the refrigerator compartment as a refrigerator refrigerator.

これによって、請求項１または２に記載の発明の効果に加え、冷蔵室内箱の熱抵抗分すなわち内箱の板厚が断熱抵抗となる分が減少し、また冷却面積が拡大するため、冷却効率が向上することができる。 Thus, in addition to the effect of the invention according to claim 1 or 2, the amount of heat resistance of the refrigerated indoor box, that is, the amount of the inner box plate thickness becomes the heat insulation resistance is reduced, and the cooling area is expanded. Can be improved.

また、本発明の請求項４にあっては、請求項１から３のいずれか一項に記載の発明において、冷蔵室の天面に吐出風路と吐出口を設け、前記冷蔵室内複数風路と冷蔵室天面吐出風路を繋ないだ構成としたものである。 According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, a discharge air passage and a discharge port are provided on the top surface of the refrigerating room, and a plurality of air passages in the refrigerating room are provided. And the refrigerator top air discharge passage are connected.

これによって、請求項１から３のいずれか一項に記載の発明の効果に加え、シャワー方式で冷却することができ、より冷蔵室内の温度分布を低減することが可能となり、食品をどの位置に配置しても均一に冷却することができる。 Accordingly, in addition to the effect of the invention according to any one of claims 1 to 3, it is possible to cool by a shower method, and it is possible to further reduce the temperature distribution in the refrigerator compartment, and to which food is located. Even if it arrange | positions, it can cool uniformly.

また、本発明の請求項５にあっては、請求項１から３のいずれか一項に記載の発明において、冷蔵室内に冷蔵室内攪拌用ファンを設ける。 According to a fifth aspect of the present invention, in the invention according to any one of the first to third aspects, a fan for stirring the refrigerating chamber is provided in the refrigerating chamber.

これにより、請求項１から３のいずれか一項に記載の発明の効果に加え、冷蔵室内攪拌用ファンを回転することで冷蔵室内の雰囲気を攪拌でき、より冷蔵室内の温度分布を低減することが可能となる。 Thereby, in addition to the effect of the invention according to any one of claims 1 to 3, the atmosphere in the refrigerator compartment can be agitated by rotating the fan for agitating the refrigerator compartment, and the temperature distribution in the refrigerator compartment can be further reduced. Is possible.

また、本発明の請求項６にあっては、請求項１から５のいずれか一項に記載の発明において、冷蔵室の蒸発器と冷凍室の蒸発器を並列にし、前記蒸発器の上流に両開き可能な三方弁を備えた冷却回路とし、蒸発器への冷媒流れを制御する。 Further, in claim 6 of the present invention, in the invention according to any one of claims 1 to 5, the evaporator of the refrigerator compartment and the evaporator of the freezer compartment are arranged in parallel, and upstream of the evaporator. The cooling circuit has a three-way valve that can be opened in both directions, and the refrigerant flow to the evaporator is controlled.

これにより、請求項１から５のいずれか一項に記載の発明の効果に加え、冷凍室用蒸発器の除霜時に冷蔵室の冷却を停止させることが不要となり、冷蔵室の冷却を常に行うことが可能となる。 Thereby, in addition to the effect of the invention according to any one of claims 1 to 5, it is not necessary to stop the cooling of the refrigerator compartment at the time of defrosting the evaporator for the freezer, and the refrigerator compartment is always cooled. It becomes possible.

本発明の冷蔵庫は、請求項１から３に記載の発明により、高外気高湿度での冷蔵室扉の多数の開閉や保存食品が大量に投入されるなどの高負荷時、冷蔵室内を急速に冷却し、さらに、庫内温度が所定温度内に安定すれば、食品の乾燥を抑制することが可能となる。また、冷蔵室の冷却壁面の除霜中も冷蔵室の急速冷却を継続させることができる。 According to the invention of claims 1 to 3, the refrigerator of the present invention rapidly opens the refrigeration room at the time of high load such as a large number of opening and closing of the refrigeration room door in high outside air and high humidity and a large amount of stored food. If it cools and also the internal temperature will be stabilized within a predetermined temperature, it becomes possible to suppress drying of food. Moreover, rapid cooling of the refrigerator compartment can be continued even during defrosting of the cooling wall surface of the refrigerator compartment.

また、本発明の冷蔵庫は、請求項４と請求項５に記載の発明により、冷蔵室内の温度分布の温度差を最小限に留めることができ、さらに食品の保鮮性向上を図ることができる。 Moreover, the refrigerator of this invention can keep the temperature difference of the temperature distribution in a refrigerator compartment to the minimum by the invention of Claim 4 and Claim 5, and can aim at the improvement of the freshness of foodstuffs further.

また、本発明の冷蔵庫は、請求項６に記載の発明により、冷凍室用蒸発器の除霜時に冷蔵室の冷却を停止させることが不要となり、冷蔵室の冷却を常に行うことが出来、食品の保鮮期間をより長く保持可能である。 Further, according to the invention of claim 6, the refrigerator of the present invention does not need to stop cooling of the refrigerator compartment when defrosting the freezer evaporator, can always cool the refrigerator compartment, Can be maintained for a longer period.

請求項１に記載の発明は、蒸発器を備え直接冷却方式にて冷却される冷蔵室と、間接冷却方式にて冷却される冷凍室を備えたものにおいて、冷凍室もしくは冷凍室冷却風路と冷蔵室を連通させる風路を設け、前記連通風路に開閉ダンパーを備えることにより、高外気高湿度での冷蔵室扉の開閉頻度の高い時、や保存食品が大量に投入されるなどの高負荷時には、開閉ダンパーを開かせ、冷凍室もしくは冷凍室冷却用蒸発器からの冷気を冷蔵室に送り、冷蔵室の冷却壁面と、冷凍室もしくは冷凍室冷却用蒸発器の冷気の両方から冷蔵室を急速に冷却させることができる。また、冷蔵室内温度が所定温度以内に安定すれば、開閉ダンパーを閉じて冷蔵室の冷却壁面のみの直接冷却とし、食品の乾燥を抑制することが可能となる。 The invention described in claim 1 includes a refrigerator compartment provided with an evaporator and cooled by a direct cooling method, and a freezer compartment cooled by an indirect cooling method. By providing an air passage that communicates with the refrigerator compartment, and by providing an open / close damper in the communication air passage, when the open / close frequency of the refrigerator compartment door is high in high outside air and high humidity, a large amount of stored food is used. When loading, open / close damper is opened, cool air from freezer or freezer cooling evaporator is sent to refrigerating room, refrigerator wall from both freezing room cooling wall and freezer cooling evaporator cooler Can be cooled rapidly. Further, if the temperature in the refrigerator compartment is stabilized within a predetermined temperature, the open / close damper is closed to directly cool only the cooling wall surface of the refrigerator compartment, and drying of food can be suppressed.

請求項２に記載の発明は、請求項１に記載の発明において、冷蔵室の冷却壁面の除霜中、冷凍室もしくは冷凍室冷却用蒸発器の冷気を冷蔵室の蒸発器とは独立分離された風路を形成して冷蔵室内に送風する制御とすることにより、請求項１の効果に加え、冷蔵室の除霜中でも、冷却壁面と分離した風路である冷凍室もしくは冷凍室冷却風路と連通する風路を設けるため、効率よく冷蔵室の冷却を継続させることが可能となる。 According to a second aspect of the present invention, in the first aspect of the invention, during the defrosting of the cooling wall surface of the refrigerator compartment, the cold air in the freezer compartment or the freezer compartment cooling evaporator is separated from the evaporator of the refrigerator compartment. In addition to the effect of claim 1, a freezer compartment or a freezer compartment cooling air passage which is an air passage separated from the cooling wall surface during defrosting of the refrigerator compartment in addition to the effect of claim 1. Since the air passage communicating with the air passage is provided, the cooling of the refrigerator compartment can be continued efficiently.

請求項３に記載の発明は、請求項１または２に記載の発明において、蒸発器を、冷蔵室を形成する内箱の壁面から離し、冷却パイプを裏面に貼り付けた熱伝導性が良い化粧板例えばアルミプレートを冷蔵室冷却器として冷蔵室庫内に設置することにより、請求項１または２に記載の発明の効果に加え、冷蔵室内箱の熱抵抗分すなわち内箱の板厚分が断熱抵抗となる分が減少し、また冷却器の面積が拡大するため、冷却効率が向上させることが可能となる。 The invention described in claim 3 is a makeup with good thermal conductivity according to the invention described in claim 1 or 2, wherein the evaporator is separated from the wall surface of the inner box forming the refrigerator compartment and the cooling pipe is attached to the back surface. By installing a plate such as an aluminum plate in the refrigerator compartment as a refrigerator in the refrigerator compartment, in addition to the effect of the invention according to claim 1 or 2, the heat resistance of the refrigerator compartment box, that is, the thickness of the inner box is insulated. Since the amount of resistance is reduced and the area of the cooler is increased, the cooling efficiency can be improved.

請求項４に記載の発明は、請求項１から３のいずれか一項に記載の発明において、冷蔵室天面に吐出風路と、吐出口を設けることにより、請求項１から３のいずれか一項に記載の発明の効果に加え、シャワー方式で冷却することができ、より冷蔵室内の温度分布を低減することが可能となり、食品をどの位置に配置しても均一に冷却することが可能となる。 The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the discharge air passage and the discharge port are provided on the top surface of the refrigerator compartment. In addition to the effect of the invention described in the item 1, it can be cooled by a shower method, it becomes possible to further reduce the temperature distribution in the refrigerator compartment, and the food can be uniformly cooled regardless of the position. It becomes.

請求項５に記載の発明は、請求項１から３のいずれか一項に記載の発明において、冷蔵室内に冷蔵室攪拌用ファンを設けることにより、これにより、請求項１から３のいずれか一項に記載の発明の効果に加え、冷蔵室内攪拌用ファンを運転することで冷蔵室内の雰囲気を攪拌でき、より冷蔵室内の温度分布の温度差を最小限に留めることが可能となる。 According to a fifth aspect of the present invention, in the invention according to any one of the first to third aspects, a cooling room stirring fan is provided in the refrigerating room. In addition to the effects of the invention described in the item, the atmosphere in the refrigerator compartment can be agitated by operating the fan for agitating the refrigerator compartment, and the temperature difference in the temperature distribution in the refrigerator compartment can be further minimized.

請求項６に記載の発明は、請求項１から５のいずれか一項に記載の発明において、冷蔵室の蒸発器と冷凍室の蒸発器を並列に並べ、前記蒸発器の上流に両開き可能な三方弁を備えた冷却回路とし、蒸発器への冷媒流れを制御することにより、請求項１から５のいずれか一項に記載の発明の効果に加え、冷凍室用蒸発器の除霜時に冷却運転を停止させることが不要となり、冷蔵室の冷却を常に行うことが可能となる。 The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the evaporator in the refrigerator compartment and the evaporator in the freezer compartment are arranged in parallel, and can be double-opened upstream of the evaporator. In addition to the effect of the invention according to any one of claims 1 to 5, a cooling circuit having a three-way valve is used to control the flow of refrigerant to the evaporator. It is not necessary to stop the operation, and the refrigerator compartment can always be cooled.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によってこの発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

（実施の形態１）
図１、図２、図３は、本発明の実施の形態１における冷蔵庫の縦断面図、冷蔵室の正面図、冷凍サイクルの構成図を示すものである。 (Embodiment 1)
1, 2, and 3 show a longitudinal sectional view of a refrigerator, a front view of a refrigerator compartment, and a configuration diagram of a refrigeration cycle according to Embodiment 1 of the present invention.

図１において、キャビネット１は、内箱５と外箱６との間に断熱材７が充填された断熱箱体８によって構成された冷蔵庫を示している。冷蔵庫は上から冷蔵室２１、保温室３１、冷凍室４１を有しており、前面は冷蔵室開閉扉２、保温室開閉扉３、冷凍室開閉扉４となっている。 In FIG. 1, the cabinet 1 has shown the refrigerator comprised by the heat insulation box 8 with which the heat insulating material 7 was filled between the inner box 5 and the outer box 6. FIG. The refrigerator has a refrigerated room 21, a storage room 31, and a freezing room 41 from the top, and a front side is a refrigerated room opening / closing door 2, a storage room opening / closing door 3, and a freezing room opening / closing door 4.

冷蔵室２１と保温室３１は断熱効果を有する仕切り板９によって、保温室３１と冷凍室４１は断熱効果を有する仕切り板１０によって仕切られている。仕切り板１０の奥には、冷凍室４１と繋がるダクト１１が設置されている。 The refrigerating room 21 and the thermal storage room 31 are partitioned by a partition plate 9 having a heat insulation effect, and the thermal storage room 31 and the freezing room 41 are partitioned by a partition plate 10 having a heat insulation effect. In the back of the partition plate 10, a duct 11 connected to the freezer compartment 41 is installed.

冷蔵室２１内には食品を収納するための冷蔵室棚２２及び、冷蔵室ケース２３が配置されている。また、冷蔵室２１の内箱５背面には、壁面に接して冷蔵室蒸発器１９が配置され、冷蔵室２１庫内は冷蔵室蒸発器１９によって冷却される冷却壁面２０を有する構成となっている。 A refrigerator compartment shelf 22 for storing food and a refrigerator compartment case 23 are disposed in the refrigerator compartment 21. In addition, a refrigerator compartment evaporator 19 is disposed on the back of the inner box 5 of the refrigerator compartment 21 in contact with the wall surface, and the refrigerator compartment 21 has a cooling wall surface 20 cooled by the refrigerator compartment evaporator 19. Yes.

冷凍室４１内にある冷却室５１は、断熱効果を有する仕切り板４４によって仕切られている。冷却室５１内には、冷凍室ファン５２と冷凍室蒸発器５３と除霜用ヒーター５４が配置されている。仕切り板４４には、冷凍室ファン５２から吐出された冷気を冷凍室４１内にある食品を収納するための冷凍室ケース４２へ吐出される吐出口４３を構成するとともに、仕切り板１０の奥に、冷蔵室２１、保温室３１へ繋がる風路１１が設けられ、風路３３、風路３４へ分岐され、さらに、風路３４は仕切り板９の奥で冷蔵室風路２４へ繋がれている。風路３３、風路３４内部には、開閉ダンパー３５、開閉ダンパー３６が配設されている。 The cooling chamber 51 in the freezing chamber 41 is partitioned by a partition plate 44 having a heat insulating effect. In the cooling chamber 51, a freezer compartment fan 52, a freezer compartment evaporator 53, and a defrosting heater 54 are arranged. The partition plate 44 constitutes a discharge port 43 through which the cool air discharged from the freezer compartment fan 52 is discharged to the freezer compartment 42 for storing food in the freezer compartment 41, and at the back of the partition plate 10. The air passage 11 connected to the refrigerating room 21 and the warming room 31 is provided, branched to the air path 33 and the air path 34, and further, the air path 34 is connected to the refrigerating room air path 24 at the back of the partition plate 9. . An open / close damper 35 and an open / close damper 36 are disposed inside the air passage 33 and the air passage 34.

図２に示すように、冷蔵室２１背面には、冷蔵室蒸発器１９を貼り付けている部分を避けて、冷蔵室風路２４が配設され、冷蔵室風路２４から冷蔵室２１へ冷気を吐出させる冷蔵室吐出口２５が設けられ、冷蔵室風路２４は風路カバー２６にて覆われている。 As shown in FIG. 2, a refrigerating room air passage 24 is disposed on the rear surface of the refrigerating room 21, avoiding the portion where the refrigerating room evaporator 19 is attached, and cool air is supplied from the refrigerating room air passage 24 to the refrigerating room 21. The refrigeration chamber discharge port 25 for discharging the refrigeration chamber is provided, and the refrigeration chamber air passage 24 is covered with an air passage cover 26.

図３は冷凍サイクルを示すものである。圧縮機６１から吐出された冷媒は、凝縮器６２で凝縮され、三方弁６３にて流路を切り替えている。一方は、キャピラリーチューブ６４で減圧され、冷蔵室蒸発器１９、冷凍室蒸発器５３にて蒸発し、アキュームレーター６６を介して、再度、圧縮機６１へ戻る冷蔵室・冷凍室同時冷却サイクルを構成している。また、他方は、キャピラリーチューブ６５で減圧され、冷凍室蒸発器５３にて蒸発し、アキュームレーター６６を介して、圧縮機６１へ戻る冷凍室単独冷却サイクルを構成している。したがって、冷蔵室２１は内箱５背面に接している冷蔵室蒸発器１９により冷却され、冷凍室４１は冷凍室蒸発器５３の蒸発潜熱を冷凍室ファン５２により撹拌し冷気を送風して冷却している。 FIG. 3 shows a refrigeration cycle. The refrigerant discharged from the compressor 61 is condensed by the condenser 62 and the flow path is switched by the three-way valve 63. One is decompressed by the capillary tube 64, evaporates in the refrigerating room evaporator 19 and the freezing room evaporator 53, and constitutes a refrigerating room / freezing room simultaneous cooling cycle that returns to the compressor 61 through the accumulator 66 again. is doing. The other constitutes a freezer compartment single cooling cycle in which the pressure is reduced by the capillary tube 65, evaporated by the freezer evaporator 53, and returned to the compressor 61 via the accumulator 66. Therefore, the refrigerating room 21 is cooled by the refrigerating room evaporator 19 in contact with the back of the inner box 5, and the freezing room 41 is cooled by blowing the cool air by stirring the latent heat of evaporation of the freezing room evaporator 53 by the freezing room fan 52. ing.

以上のように構成された冷蔵庫について、以下その動作、作用を説明する。 About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

まず、圧縮機６１が稼動することで、冷媒が圧縮、凝縮、減圧されることにより冷蔵室蒸発器１９、冷凍室蒸発器５３が蒸発潜熱によって冷却される。 First, when the compressor 61 is operated, the refrigerant is compressed, condensed, and decompressed, whereby the refrigerator compartment evaporator 19 and the freezer compartment evaporator 53 are cooled by the latent heat of evaporation.

冷蔵室蒸発器１９おいては、冷蔵室２１の内箱５の背面に接しており、冷蔵室２１の内箱５の背面が冷却壁面２０となり、冷蔵室２１内の冷蔵室棚２２、冷蔵室ケース２３の冷却を行っている。 In the refrigerating room evaporator 19, the rear surface of the inner box 5 of the refrigerating room 21 is in contact with the rear surface of the refrigerating room 21, and the back surface of the inner box 5 of the refrigerating room 21 serves as a cooling wall 20. The case 23 is cooled.

一方、冷却室内５１にある冷凍室蒸発器５３においては、冷凍室ファン５２によって冷気を吐出させ、仕切り板４４内の風路を通過し、吐出口４３より冷凍室ケース４２へ吐出される。吐出した冷気は冷凍室ケース４２と熱交換した後、仕切り板４４下部より吸い込まれる。 On the other hand, in the freezer compartment evaporator 53 in the cooling chamber 51, cold air is discharged by the freezer fan 52, passes through the air passage in the partition plate 44, and is discharged from the discharge port 43 to the freezer case 42. The discharged cold air exchanges heat with the freezer compartment case 42 and then is sucked in from the lower part of the partition plate 44.

さらに、冷凍室ファン５２によって吐出された冷気は仕切り板４４内の風路を通過するが、一部冷気は仕切り板１０の奥にある風路１１へ流入し、開閉ダンパー３５を通過し、保温室３１内背面にある風路３３へ循環していく。風路３３に流入した冷気は、吐出口３７より保温室ケース３２に吐出され、保温室ケース３２と熱交換した後、背面にある風路３３より吸い込まれ、冷却室５１へ戻される。このとき、保温室３１内の温度を検知しており、設定温度範囲内で、開閉ダンパー３５の開閉頻度を変化させ、開閉ダンパー３５を通過する冷気量をコントロールし、保温室３１の温度を一定に保っている。 Furthermore, the cold air discharged by the freezer compartment fan 52 passes through the air passage in the partition plate 44, but a part of the cold air flows into the air passage 11 at the back of the partition plate 10 and passes through the open / close damper 35 to keep the heat. It circulates to the air passage 33 in the back of the chamber 31. The cold air that has flowed into the air passage 33 is discharged from the discharge port 37 to the heat storage case 32, exchanges heat with the heat storage case 32, and then is sucked from the air passage 33 on the back and returned to the cooling chamber 51. At this time, the temperature inside the warming chamber 31 is detected, the opening / closing frequency of the opening / closing damper 35 is changed within the set temperature range, the amount of cold air passing through the opening / closing damper 35 is controlled, and the temperature of the warming chamber 31 is kept constant. It keeps in.

そして、高外気高湿度での冷蔵室扉２の多数の開閉や、保存食品が大量に投入されるなどの高負荷時には、冷蔵室２１内の温度を検知し、高負荷判定温度以上となると開閉ダンパー３６を開かせ、保温室３１内背面にある風路３４へ冷気を流入させる。風路３４に流入した冷気は、仕切り板９の奥にある風路２４へ流入し、吐出口２５より冷蔵室２１に吐出され、冷蔵室内の食品と熱交換した後、冷蔵室２１背面にある風路２４より吸い込まれ、冷却室５１へ戻される。開閉ダンパー３６が開いた後、冷蔵室２１内の温度が不高負荷判定温度以下になった場合は、開閉ダンパー３６を閉じ、冷蔵室蒸発器１９のみの冷却となる。 Then, when a large load such as a large number of opening and closing of the refrigerator compartment door 2 in high outside air and high humidity or when a large amount of stored food is introduced, the temperature in the refrigerator compartment 21 is detected, and when the temperature is higher than the high load judgment temperature, it is opened and closed. The damper 36 is opened, and the cold air is caused to flow into the air passage 34 at the back of the inside of the thermal storage room 31. The cold air that has flowed into the air passage 34 flows into the air passage 24 at the back of the partition plate 9, is discharged from the discharge port 25 to the refrigerating chamber 21, and exchanges heat with food in the refrigerating chamber, and then is on the back of the refrigerating chamber 21. The air is sucked from the air passage 24 and returned to the cooling chamber 51. After the opening / closing damper 36 is opened, when the temperature in the refrigerator compartment 21 is equal to or lower than the unhigh load determination temperature, the opening / closing damper 36 is closed, and only the refrigerator compartment evaporator 19 is cooled.

以上のように、本実施の形態では、冷蔵室２１の温度を検知して動作する開閉ダンパー３６の開閉を行うことで、冷凍室４１内冷気もしくは冷凍室蒸発器５３と熱交換した冷気を冷凍室ファン５２にて冷蔵室２１へ循環する冷気量をコントロールし、高負荷時、冷蔵室２１内を急速に冷却することができ、高負荷以外の際は、開閉ダンパー３６を閉じ冷蔵室蒸発器１９のみの冷却とすることで、直接冷却のみの冷却方式となり、食品の乾燥を防ぐことが可能なる。 As described above, in the present embodiment, the open / close damper 36 that operates by detecting the temperature of the refrigerating chamber 21 is opened and closed, so that the cold air in the freezer chamber 41 or the cold air that has exchanged heat with the freezer evaporator 53 is frozen. The amount of cool air circulating to the refrigerating room 21 is controlled by the room fan 52 so that the inside of the refrigerating room 21 can be rapidly cooled at high loads. When the load is not high, the open / close damper 36 is closed and the refrigerating room evaporator is used. By using only 19 cooling, it becomes a cooling system with only direct cooling, and drying of food can be prevented.

なお、本実施の形態は、冷蔵室冷却壁面２０が冷蔵室２１内を冷却している場合としたが、冷蔵室冷却壁面２０が着霜した場合には、三方弁６３により冷媒をキャピラリーチューブ６５へ流れる回路に切り替え冷凍室単独冷却サイクルとし、冷蔵室蒸発器１９の冷却を停止して、冷蔵室冷却壁面２０の除霜を行う。このとき、冷蔵室２１の温度を検知して動作する開閉ダンパー３６の開閉を行い、冷蔵室２１の冷却を継続する制御を行うことにより、冷蔵室の除霜中でも、冷蔵室の冷却を継続させることが可能となる。 In the present embodiment, the refrigerator compartment cooling wall surface 20 cools the inside of the refrigerator compartment 21. However, when the refrigerator compartment cooling wall surface 20 forms frost, the three-way valve 63 supplies the refrigerant to the capillary tube 65. It switches to the circuit which flows into a freezer compartment single cooling cycle, the cooling of the refrigerator compartment evaporator 19 is stopped, and the refrigerator compartment cooling wall surface 20 is defrosted. At this time, the open / close damper 36 that operates by detecting the temperature of the refrigerator compartment 21 is opened and closed, and the cooling of the refrigerator compartment 21 is controlled to continue cooling, thereby continuing the cooling of the refrigerator compartment even during defrosting of the refrigerator compartment. It becomes possible.

（実施の形態２）
図４、図５は、本発明の実施の形態２における冷蔵庫の断面図、冷蔵室の正面図を示すものである。尚、実施の形態１と同一構成については、同一符号を付してその詳細な説明は省略する。 (Embodiment 2)
4 and 5 show a cross-sectional view of the refrigerator and a front view of the refrigerator compartment according to Embodiment 2 of the present invention. In addition, about the same structure as Embodiment 1, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

図４、図５において、冷蔵室冷却器２７は、内箱５背面から庫内側に一定の空間を保ち保持された構造となっている。さらに、冷蔵室冷却器２７は、熱伝導性プレート２８と冷蔵室冷却パイプ２９で構成されており、熱伝導性プレート２８の裏面（内箱５側）に冷蔵室冷却パイプ２９が貼り付けられている。 4 and 5, the refrigerating room cooler 27 has a structure in which a certain space is maintained from the back of the inner box 5 to the inside of the warehouse. Furthermore, the refrigerator compartment cooler 27 is composed of a heat conductive plate 28 and a refrigerator compartment cooling pipe 29, and the refrigerator compartment cooling pipe 29 is attached to the back surface (inner box 5 side) of the heat conductive plate 28. Yes.

なお、本実施の形態の冷蔵庫の冷凍サイクルは、図３に示す実施の形態１の冷凍サイクルと同一構成であるため、説明は除く。 In addition, since the refrigerating cycle of the refrigerator of this Embodiment is the same structure as the refrigerating cycle of Embodiment 1 shown in FIG. 3, description is abbreviate | omitted.

以上のように構成された本実施の形態の冷蔵庫について、以下、実施の形態１と異なる部分を中心に、その動作、作用を説明する。 About the refrigerator of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated centering on a different part from Embodiment 1 below.

冷蔵室冷却器２７は、冷蔵室冷却パイプ２９内の蒸発潜熱により冷却され、熱伝導性プレート２８に熱伝導して冷蔵室冷却器２７の表面（庫内側）と裏面（内箱側）の両面が冷却面となり、冷蔵室２１を冷却する。 The refrigerator compartment cooler 27 is cooled by the latent heat of vaporization in the refrigerator compartment cooling pipe 29, and is conducted to the heat conductive plate 28, so that both surfaces of the refrigerator compartment cooler 27 (inner side) and back side (inner box side) are provided. Becomes a cooling surface and cools the refrigerator compartment 21.

以上のように、本実施の形態では、冷蔵室冷却器２７を、内箱５背面から庫内側に一定の空間を保ち保持された構造とすることにより、冷蔵室内箱５の熱抵抗分が減少し、また冷却面積が拡大するため、冷却効率を向上することができる。 As described above, in the present embodiment, the refrigerator compartment cooler 27 has a structure in which a constant space is maintained from the back of the inner box 5 to the inside of the cabinet, thereby reducing the thermal resistance of the refrigerator compartment box 5. In addition, since the cooling area is expanded, the cooling efficiency can be improved.

（実施の形態３）
図６、図７は、本発明の実施の形態３における冷蔵庫の断面図、正面図を示すものである。尚、実施の形態１もしくは実施の形態２と同一構成については、同一符号を付してその詳細な説明は省略する。 (Embodiment 3)
6 and 7 show a cross-sectional view and a front view of the refrigerator according to Embodiment 3 of the present invention. In addition, about the same structure as Embodiment 1 or Embodiment 2, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

図６、図７において、冷蔵室２１の天面に冷蔵室天面風路７１を構成している。また、冷蔵室天面風路７１の奥は、冷蔵室風路２４と繋がっており、冷蔵室天面風路７１は、天面吐出口７２が形成された冷蔵室天面風路カバー７３で覆われて固定されている。 6 and 7, a refrigeration room top air passage 71 is formed on the top surface of the refrigeration room 21. Further, the back of the refrigerator compartment top air passage 71 is connected to the refrigerator compartment air passage 24, and the refrigerator compartment top air passage 71 is a refrigerator compartment top air passage cover 73 in which a top discharge port 72 is formed. Covered and fixed.

なお、本実施の形態の冷蔵庫の冷凍サイクルは、図２に示す実施の形態１の冷凍サイクルと同一構成であるため、説明は除く。 In addition, since the refrigerating cycle of the refrigerator of this Embodiment is the same structure as the refrigerating cycle of Embodiment 1 shown in FIG. 2, description is abbreviate | omitted.

以上のように構成された本実施の形態の冷蔵庫について、以下、実施の形態１もしくは実施の形態２と異なる部分を中心に、その動作、作用を説明する。 About the refrigerator of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated hereafter centering on a different part from Embodiment 1 or Embodiment 2. FIG.

冷凍室ファン５２によって吐出された一部冷気が仕切り板１０の奥にある風路１１へ流入し、開閉ダンパー３６を風路３４を通過し、冷蔵室風路２４へ送り込まれる。冷蔵室風路２４へ送り込まれた冷気の一部は、冷蔵室吐出口２５から冷蔵室２１へ吐出される。さらに、冷気は、冷蔵室風路２４と繋がれた冷蔵室天面風路７１へ流入し、冷蔵室天面吐出口７２から冷蔵室２１へ吐出される。その後、冷蔵室２１内の食品と熱交換した後、冷蔵室風路２４より吸い込まれ、冷却室５１へ戻される。 Part of the cool air discharged by the freezer compartment fan 52 flows into the air passage 11 at the back of the partition plate 10, passes through the air passage 34 through the open / close damper 36, and is sent to the refrigerating compartment air passage 24. A part of the cold air sent to the refrigerator compartment air passage 24 is discharged from the refrigerator compartment outlet 25 to the refrigerator compartment 21. Furthermore, the cold air flows into the refrigerator compartment top air passage 71 connected to the refrigerator compartment air passage 24 and is discharged from the refrigerator compartment top surface discharge port 72 to the refrigerator compartment 21. Then, after exchanging heat with the food in the refrigerator compartment 21, it is sucked from the refrigerator compartment air passage 24 and returned to the cooling compartment 51.

以上のように、本実施の形態では、冷凍室ファン５２によって吐出された一部冷気は、冷蔵室天面風路７１を通過、冷蔵室２１の天面に配設された冷蔵室天面吐出口７２より吐出することにより、冷蔵室２１内へシャワー方式で冷却することができ、冷蔵室２１内の温度分布を低減することが可能となり、食品をどの位置に配置しても均一な一定温度に保つことが可能となる。 As described above, in the present embodiment, the partial cold air discharged by the freezer compartment fan 52 passes through the refrigerating room top air passage 71 and is placed on the top surface of the refrigerating room 21. By discharging from the outlet 72, it is possible to cool into the refrigeration chamber 21 by a shower method, and the temperature distribution in the refrigeration chamber 21 can be reduced. It becomes possible to keep it.

（実施の形態４）
図８、図９は、本発明の実施の形態４における冷蔵庫の断面図、正面図を示すものである。尚、実施の形態１もしくは実施の形態２と同一構成については、同一符号を付してその詳細な説明は省略する。 (Embodiment 4)
8 and 9 show a sectional view and a front view of the refrigerator in the fourth embodiment of the present invention. In addition, about the same structure as Embodiment 1 or Embodiment 2, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

図８、図９において、冷蔵室２１背面上部に、冷蔵室内攪拌用ファン８１を配設し、冷蔵室内攪拌用ファン８１は冷蔵室内攪拌用ファンカバー８２により覆われ、冷蔵室２１天面に固定されている。 8 and 9, a refrigerating room agitating fan 81 is provided at the upper rear of the refrigerating room 21, and the refrigerating room agitating fan 81 is covered with a refrigerating room agitating fan cover 82 and fixed to the top of the refrigerating room 21. Has been.

以上のように構成された本実施の形態の冷蔵庫について、以下、実施の形態１、実施の形態２もしくは実施の形態３と異なる部分を中心に、その動作、作用を説明する。 About the refrigerator of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated centering on a different part from Embodiment 1, Embodiment 2, or Embodiment 3 below.

冷蔵室内攪拌用ファン８１を運転することにより、冷蔵室２１の雰囲気が攪拌される。 By operating the refrigerating chamber agitating fan 81, the atmosphere of the refrigerating chamber 21 is agitated.

以上のように、本実施の形態では、冷蔵室内攪拌用ファン８１を運転することにより、冷蔵室２１の雰囲気を攪拌することができ、冷蔵室２１の温度分布を低減することが可能となり、食品をどの位置に配置しても均一な一定温度に保つことが可能となる。 As described above, in the present embodiment, by operating the refrigerating chamber agitating fan 81, the atmosphere in the refrigerating chamber 21 can be agitated, the temperature distribution in the refrigerating chamber 21 can be reduced, and the food It is possible to maintain a uniform and constant temperature regardless of the position of the position.

（実施の形態５）
図１０は、本発明の実施の形態５における冷蔵庫の冷凍サイクルの構成図を示すものである。尚、実施の形態１、実施の形態２、実施の形態３もしくは実施の形態４と同一構成については、同一符号を付してその詳細な説明は省略する。 (Embodiment 5)
FIG. 10 shows a configuration diagram of the refrigeration cycle of the refrigerator in the fifth embodiment of the present invention. In addition, about the same structure as Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

本実施の形態の冷蔵庫の断面図、正面図は、図１、図２に示す実施の形態１の断面図、正面図と同一構成であるため、説明は除く。 Since the cross-sectional view and front view of the refrigerator of the present embodiment have the same configuration as the cross-sectional view and front view of the first embodiment shown in FIG. 1 and FIG.

図１０において、圧縮機６１から吐出された冷媒は、凝縮器６２で凝縮され、両開き可能な三方弁９１にて流路を切り替えている。一方は、キャピラリーチューブ９２で減圧され、冷蔵室蒸発器１９にて蒸発し、アキュームレーター９４を介して、再度、圧縮機６１へ戻る冷蔵室冷却サイクルを構成している。また他方は、キャピラリーチューブ９３で減圧され、蒸発器５３にて蒸発し、アキュームレーター６６を介して、圧縮機６１へ戻る冷凍室冷却サイクルを構成している。さらに、両開き可能な三方弁９１を両開することにより、キャピラリーチューブ９２、キャピラリーチューブ９３それぞれで減圧され、冷蔵室蒸発器１９、蒸発器５３にて蒸発し、アキュームレーター９４、アキュームレーター６６を介して、圧縮機６１へ戻る冷蔵室・冷凍室同時冷却サイクルも構成している。 In FIG. 10, the refrigerant discharged from the compressor 61 is condensed by the condenser 62, and the flow path is switched by a three-way valve 91 that can be double-opened. One of them constitutes a refrigerating room cooling cycle in which the pressure is reduced by the capillary tube 92, evaporated by the refrigerating room evaporator 19, and returned to the compressor 61 again via the accumulator 94. The other constitutes a freezer compartment cooling cycle in which the pressure is reduced by the capillary tube 93, evaporated by the evaporator 53, and returned to the compressor 61 via the accumulator 66. Further, by opening both of the three-way valves 91 that can be opened in both directions, the pressure is reduced in the capillary tube 92 and the capillary tube 93, evaporates in the refrigerator compartment evaporator 19 and the evaporator 53, and passes through the accumulator 94 and accumulator 66. Thus, a refrigerating room / freezing room simultaneous cooling cycle returning to the compressor 61 is also configured.

以上のように構成された本実施の形態の冷蔵庫について、以下、実施の形態１、実施の形態２、実施の形態３もしくは実施の形態４と異なる部分を中心に、その動作、作用を説明する。 About the refrigerator of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated centering on a different part from Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4 below. .

冷凍室用蒸発器５３に着霜し、除霜が必要となった場合、両開き可能な三方弁９１を冷蔵室冷却サイクルにすることで、冷凍室用蒸発器５３への冷媒供給が停止され、冷凍室用蒸発器５３内の蒸発が停止され、冷凍室用蒸発器５３の除霜を行なう。このとき、冷蔵室蒸発器１９へは冷媒供給は継続され、冷蔵室蒸発器１９の蒸発潜熱により冷却壁面２０が冷やされ、最終的に冷蔵室２１を冷却している。 When the freezer compartment evaporator 53 is frosted and defrosting is required, the refrigerant supply to the freezer compartment evaporator 53 is stopped by setting the double-openable three-way valve 91 to the refrigerating compartment cooling cycle, The evaporation in the freezer compartment evaporator 53 is stopped, and the freezer compartment evaporator 53 is defrosted. At this time, the supply of the refrigerant to the refrigerator compartment evaporator 19 is continued, the cooling wall surface 20 is cooled by the latent heat of evaporation of the refrigerator compartment evaporator 19, and the refrigerator compartment 21 is finally cooled.

以上のように、本実施の形態では、冷蔵室蒸発器１９と冷凍室蒸発器５３を並列回路とし、それら蒸発器の上流に両開き可能な三方弁９１を備えた冷凍サイクルにすることにより、冷凍室用蒸発器５３の除霜時、冷蔵室２１の冷却を停止させることが不要となり、冷蔵室２１の冷却を継続的に行うことが可能となる。 As described above, in the present embodiment, the refrigeration chamber evaporator 19 and the freezer compartment evaporator 53 are arranged in a parallel circuit, and the refrigeration cycle is provided with the three-way valve 91 that can be double-opened upstream of these evaporators. When the room evaporator 53 is defrosted, it is not necessary to stop the cooling of the refrigerating chamber 21, and the refrigerating chamber 21 can be continuously cooled.

以上のように、本発明による冷蔵庫は、高負荷時において冷蔵室を急速に冷却し、高負荷時以外は食品の乾燥を抑制し、食品の保鮮性向上を図ることが可能となる。また、冷蔵室の温度分布を小さくすることができ、食品の保鮮性をさらに向上させることにより長期保存も可能となる。 As described above, the refrigerator according to the present invention rapidly cools the refrigerator compartment at the time of high load, and suppresses drying of the food except at the time of high load, thereby improving the freshness of the food. Further, the temperature distribution in the refrigerator compartment can be reduced, and long-term storage is possible by further improving the freshness of the food.

以上のような効果から、冷蔵庫以外の冷凍機器等の用途にも適用できる。 From the above effects, the present invention can also be applied to uses such as refrigeration equipment other than refrigerators.

本発明の実施の形態１における冷蔵庫の縦断面図The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention 本発明の実施の形態１における冷蔵庫の正面図Front view of the refrigerator in Embodiment 1 of the present invention 本発明の実施の形態１における冷凍サイクルの構成図Configuration diagram of a refrigeration cycle in Embodiment 1 of the present invention 本発明の実施の形態２における冷蔵庫の縦断面図Longitudinal sectional view of the refrigerator in the second embodiment of the present invention 本発明の実施の形態２における冷蔵庫の正面図Front view of the refrigerator in Embodiment 2 of the present invention 本発明の実施の形態３における冷蔵庫の縦断面図Vertical sectional view of the refrigerator in the third embodiment of the present invention 本発明の実施の形態３における冷蔵庫の正面図Front view of the refrigerator in Embodiment 3 of the present invention 本発明の実施の形態４における冷蔵庫の縦断面図Vertical section of the refrigerator in Embodiment 4 of the present invention 本発明の実施の形態４における冷蔵庫の正面図Front view of the refrigerator in Embodiment 4 of the present invention 本発明の実施の形態５における冷凍サイクルの構成図Configuration diagram of refrigeration cycle in Embodiment 5 of the present invention 従来技術における冷蔵庫の縦断面図Vertical sectional view of a refrigerator in the prior art

符号の説明Explanation of symbols

１キャビネット
２冷蔵室開閉扉
３保温室開閉扉
４冷凍室開閉扉
５内箱
６外箱
７断熱材
８断熱箱体
９仕切り板（冷蔵室・保温室）
１０仕切り板（保温室・冷凍室）
１１冷蔵室・保温室集合風路
１９冷蔵室蒸発器
２０冷却壁面
２１冷蔵室
２２冷蔵室棚
２３冷蔵室ケース
３１保温室
３２保温室ケース
３３保温室用風路（保温室背面）
３４冷蔵室用風路（保温室背面）
３５開閉ダンパー（保温室風路）
３６開閉ダンパー（冷蔵室風路）
３７吐出口（保温室用）
４１冷凍室
４２冷凍室ケース
４３吐出口（冷凍室用）
４４仕切り板（冷凍室・冷却室）
５１冷却室
５２冷凍室ファン
５３冷凍室蒸発器
５４除霜用ヒーター
６１圧縮機
６２凝縮器
６３三方弁
６４キャピラリーチューブ（冷蔵室・冷凍室同時冷却サイクル用）
６５キャピラリーチューブ（冷凍室単独冷却サイクル用）
６６アキュームレーター
７１冷蔵室天面風路
７２冷蔵室天面吐出口
７３冷蔵室天面風路カバー
８１冷蔵室内撹拌用ファン
８２冷蔵室内撹拌用ファンカバー
９１三方弁（両開き可能）
９２キャピラリーチューブ（冷蔵室冷却サイクル用）
９３キャピラリーチューブ（冷凍室冷却サイクル用）
９４アキュームレーター
９５逆止弁 DESCRIPTION OF SYMBOLS 1 Cabinet 2 Refrigerating room opening / closing door 3 Storage room opening / closing door 4 Freezing room opening / closing door 5 Inner box 6 Outer box 7 Heat insulation material 8 Heat insulation box body 9 Partition plate (refrigeration room / storage room)
10 Partition plate (greenhouse / freezer)
11 Cold Room / Holding Room Collective Air Path 19 Cold Room Evaporator 20 Cooling Wall 21 Cold Room 22 Cold Room Shelf 23 Cold Room Case 31 Hot Room 32 Hot Room Case 33 Hot Room Airway (Back of Hot Room)
34 Airway for refrigerated room
35 Opening / Closing Damper (Greenhouse Airway)
36 Open / close damper (refrigeration room air passage)
37 Discharge port (for greenhouse)
41 Freezer compartment 42 Freezer compartment case 43 Discharge port (for freezer compartment)
44 Partition (freezer / cooling room)
51 Cooling chamber 52 Freezing chamber fan 53 Freezing chamber evaporator 54 Defrosting heater 61 Compressor 62 Condenser 63 Three-way valve 64 Capillary tube (for refrigerating chamber and freezing chamber simultaneous cooling cycle)
65 Capillary tube (for freezer compartment single cooling cycle)
66 Accumulator 71 Refrigerating room top air passage 72 Refrigerating room top air outlet 73 Refrigerating room top air passage cover 81 Refrigerating room stirring fan 82 Refrigerating room stirring fan cover 91 Three-way valve
92 Capillary tube (for refrigeration chamber cooling cycle)
93 Capillary tube (for freezer compartment cooling cycle)
94 Accumulator 95 Check valve

Claims

直接冷却方式にて冷却される冷蔵室と、間接冷却方式にて冷却される冷凍室を備えた冷蔵庫に、冷凍室もしくは冷凍室冷却風路と冷蔵室を連通させる風路を設け、前記連通風路に開閉ダンパーを備えたことを特徴とする冷蔵庫。 A refrigerator having a refrigeration room cooled by a direct cooling method and a freezing room cooled by an indirect cooling method is provided with a freezing room or an air passage that connects the freezing room cooling air passage and the refrigeration room, the communication air A refrigerator comprising an open / close damper on a road.

冷蔵室の蒸発器の霜を除霜する際、前記連通風路に開閉ダンパーを開け、冷凍室もしくは冷凍室冷却風路の冷気を冷蔵室の蒸発器とは独立分離された風路を形成して冷蔵室内に送風させることを特徴とする請求項１に記載の冷蔵庫。 When defrosting the frost in the evaporator of the refrigerator compartment, an open / close damper is opened in the communication air passage to form an air passage that separates the cold air in the freezer compartment or freezer compartment cooling air passage from the evaporator in the refrigerator compartment. The refrigerator according to claim 1, wherein air is blown into the refrigerator compartment.

蒸発器を、冷蔵室を形成する内箱の壁面から離し、冷却パイプを裏面に貼り付けた熱伝導性が良い化粧板を冷却壁面として冷蔵室庫内に設置したことを特徴とする請求項１または２に記載の冷蔵庫。 The evaporator is separated from the wall surface of the inner box forming the refrigerator compartment, and a decorative plate having a good thermal conductivity with a cooling pipe attached to the back surface is installed in the refrigerator compartment as a cooling wall surface. Or the refrigerator of 2.

冷蔵室天面に吐出風路と、吐出口を設けたことを特徴とする請求項１から３のいずれか一項に記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 3, wherein a discharge air passage and a discharge port are provided on the top of the refrigerator compartment.

冷蔵室内に冷蔵室攪拌用ファンを設けたことを特徴とする請求項１から３のいずれか一項に記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 3, wherein a fan for stirring the refrigerator compartment is provided in the refrigerator compartment.

冷蔵室の蒸発器と冷凍室の蒸発器を並列にし、前記蒸発器の上流に両開き可能な三方弁を備えた冷却回路とし、冷凍室の蒸発器の霜を除霜する際、冷蔵室の冷却を停止しないように制御することを特徴とする請求項１から５のいずれか一項に記載の冷蔵庫。 When the evaporator in the freezer compartment and the evaporator in the freezer compartment are arranged in parallel and a three-way valve that can be double-opened upstream of the evaporator is used to cool the refrigerator compartment when defrosting the evaporator frost in the freezer compartment The refrigerator according to any one of claims 1 to 5, wherein the refrigerator is controlled not to stop.