JPH10205988A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance thermal insulation effect by shaping an evacuated insulator similarly to a thermal insulation box at the part of machine room thereby arranging the thermal insulation material effectively. SOLUTION: An evacuated insulator 71 is extended upward through a vegetable room 17 to the lower part of a cold storage room 8. Lower end 71A of the evacuated insulator 71 is inclined gradually upward from the forward part toward the rear part at a specified angle so that it copies the shape of bottom wall 6A thus covering the entire region from the forward part to the rear part on the bottom of a cold storage room 18 while avoiding a machine room 56. Consequently, the evacuated insulator 71 is applied to the bottom of a thermal insulation box 6 over a wider area thereof regardless of the shape of the bottom wall 6A of the thermal insulation box 6 dependent on the machine room 56 resulting in the enhancement of thermal insulation effect.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、外箱と内箱間に真
空断熱材を備えた断熱箱体から成る冷蔵庫に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator comprising an insulating box provided with a vacuum insulating material between an outer box and an inner box.

【０００２】[0002]

【従来の技術】従来よりこの種冷蔵庫は、鋼板製の外箱
と硬質樹脂製の内箱間に発泡ポリウレタンなどの断熱材
を現場発泡方式にて充填した断熱箱体から構成されてお
り、この断熱箱体内（庫内）を仕切ることによって、−
２０℃などの凍結温度に冷却される冷凍室や、＋５℃な
どの冷蔵温度に維持される冷蔵室、そして、野菜などの
乾燥を嫌う食品を保存するための野菜室などを区画形成
している。2. Description of the Related Art Refrigerators of this type have conventionally been constructed of an insulated box in which an insulating material such as foamed polyurethane is filled between a steel sheet outer box and a hard resin inner box by an in-situ foaming method. By partitioning the inside of the insulated box (inside the storage),-
A freezing room cooled to a freezing temperature such as 20 ° C., a refrigerated room maintained at a refrigerated temperature such as + 5 ° C., and a vegetable room for storing foods such as vegetables that do not want to be dried are defined. .

【０００３】特に、近年では頻繁に食品の納出が行われ
る冷蔵室や野菜室を上方に配置し、長期保存を目的とし
た冷凍室は庫内の最下部に配置した冷蔵庫が開発されて
いる。[0003] In particular, in recent years, refrigerators have been developed in which a refrigerator compartment and a vegetable compartment, where food is frequently delivered, are arranged above, and a freezer compartment for long-term storage is arranged at the bottom of the refrigerator. .

【０００４】また、近年では冷蔵庫の設置スペースを縮
小し、或いは、その拡大を防止しつつ、庫内有効容積を
拡張するために、断熱箱体の壁厚を薄くする必要が生じ
ており、そのため、例えば特公昭６１−１７２６３号公
報（Ｂ３２Ｂ５／１８）や特公昭６３−３５９１１号公
報（Ｆ２５Ｄ２３／０６）、或いは、特公平２−５４４
７９号公報（Ｆ１６Ｌ５９／０６）に示されるような真
空断熱材が用いられるようになって来た。In recent years, it has become necessary to reduce the wall thickness of the heat-insulating box in order to reduce the installation space of the refrigerator or to prevent the expansion of the refrigerator while expanding the effective volume in the refrigerator. For example, JP-B-61-17263 (B32B5 / 18) and JP-B-63-35911 (F25D23 / 06), or JP-B-2-544.
No. 79 (F16L59 / 06) has come to use a vacuum heat insulating material.

【０００５】この真空断熱材は、ガス（空気など）の透
過を阻止する多層ラミネート構造のフィルム（ガスバリ
アフィルム）の周囲を溶着して成る袋内に、シリカ、パ
ーライトなどの微粉末、及び、グラスファイバ、或い
は、連続気泡の発泡ポリウレタンなどから成る断熱材を
挿入した後、袋内のガスを排気し、真空状態として密封
したものである。[0005] This vacuum heat insulating material is provided in a bag formed by welding the periphery of a film (gas barrier film) having a multilayer laminate structure for preventing gas (such as air) from permeating, into a fine powder of silica, pearlite, etc., and a glass. After inserting a heat insulating material made of fiber or open-cell foamed polyurethane, the gas in the bag is evacuated and sealed in a vacuum state.

【０００６】係る真空断熱材によれば、０．００５〜
０．０１０Ｋｃａｌ／ｍｈ℃の熱伝導率が達成されるの
で、特に低温が要求される冷凍室周囲の外箱内面に配置
すれば、断熱箱体の壁厚を薄くしても、外箱外から冷凍
室内に侵入する熱を有効に削減することが可能となる。According to such a vacuum heat insulating material, 0.005 to
Since a thermal conductivity of 0.010 Kcal / mh ° C. is achieved, especially when the heat insulating box is disposed on the inner surface of the outer box around the freezing room where a low temperature is required, even if the wall thickness of the heat insulating box is reduced, the heat insulating box is kept from the outside of the outer box. It is possible to effectively reduce the heat that enters the freezer compartment.

【０００７】[0007]

【発明が解決しようとする課題】とこで、冷却装置の圧
縮機などを設置するための機械室は、この種冷蔵庫では
通常断熱箱体外の後下部に構成される。即ち、係る機械
室を構成するために、断熱箱体の底壁は後部が立ち上が
る形状とされ、その底壁後部の外側に機械室は構成され
るかたちとなる。Here, a machine room for installing a compressor of a cooling device and the like is usually provided in a rear lower part outside the heat insulating box in such a refrigerator. That is, in order to constitute such a machine room, the bottom wall of the heat-insulating box has a shape in which the rear portion stands up, and the machine room is formed outside the rear portion of the bottom wall.

【０００８】そのため、前述の如く冷凍室が庫内最下部
に構成される場合には、冷凍室の底部形状が後部が前部
よりも立ち上がるかたちとなる。Therefore, when the freezing compartment is formed at the lowermost portion of the refrigerator as described above, the shape of the bottom of the freezing compartment is such that the rear portion rises more than the front portion.

【０００９】しかしながら、従来の真空断熱材は正方形
或いは長方形の板状体であったため、上述の如き形状の
冷凍室の側方に配置する際、どうしても立ち上がった断
熱箱体の底壁後部より下方に行けなくなるため、冷凍室
前部の左右には真空断熱材を配置することができなくな
る問題が生じていた。However, since the conventional vacuum heat insulating material is a square or rectangular plate, when it is disposed on the side of the freezing compartment having the above-mentioned shape, it is inevitably lower than the rear part of the bottom wall of the heat insulating box that has risen. As a result, there is a problem that the vacuum heat insulating material cannot be disposed on the left and right sides of the front of the freezer compartment.

【００１０】本発明は、係る従来の技術的課題を解決す
るために成されたものであり、真空断熱材を効果的に配
置して断熱効果の向上を図ることができる冷蔵庫を提供
するものである。The present invention has been made to solve the above-mentioned conventional technical problem, and provides a refrigerator capable of effectively arranging a vacuum heat insulating material to improve the heat insulating effect. is there.

【００１１】[0011]

【課題を解決するための手段】請求項１の発明の冷蔵庫
は、外箱と内箱間に真空断熱材を備えた断熱箱体から成
り、この断熱箱体内に貯蔵室を、断熱箱体外には機械室
を構成して成るものであって、真空断熱材の形状を、機
械室部分の断熱箱体の形状に近似させたものである。The refrigerator according to the present invention comprises a heat insulating box provided with a vacuum heat insulating material between an outer box and an inner box. Has a machine room, in which the shape of the vacuum heat insulating material is approximated to the shape of a heat insulating box in the machine room portion.

【００１２】請求項１の発明によれば、冷蔵庫に取り付
ける真空断熱材の形状を、機械室部分の断熱箱体の形状
に近似させたので、真空断熱材の面積を拡張し、断熱箱
体の断熱効果を向上させることが可能となる。According to the first aspect of the present invention, the shape of the vacuum heat insulating material attached to the refrigerator is approximated to the shape of the heat insulating box in the machine room portion. The heat insulation effect can be improved.

【００１３】特に、機械室による断熱箱体の形状に係わ
らず、最も断熱したい部分に効果的に真空断熱材を設け
ることができるようになるので、総じて断熱箱体の壁厚
を薄くして冷蔵庫の設置スペースをより一層縮小し、若
しくは、有効容積を拡大し、或いは、冷却装置の消費電
力の一層の削減を図ることができるようになるものであ
る。In particular, regardless of the shape of the heat insulating box formed by the machine room, a vacuum heat insulating material can be effectively provided at the most desired portion to be thermally insulated. Can further reduce the installation space, increase the effective volume, or further reduce the power consumption of the cooling device.

【００１４】請求項２の発明の冷蔵庫は、外箱と内箱間
に真空断熱材を備えた断熱箱体から成り、この断熱箱体
内に貯蔵室を、断熱箱体外には機械室を構成して成るも
のであって、断熱箱体の底壁は後部が立ち上がる形状を
呈し、この底壁後部の外側に機械室が構成されると共
に、真空断熱材は断熱箱体の側壁内に配設され、その下
端後部は前部から徐々に立ち上がる形状とされているも
のである。A refrigerator according to a second aspect of the present invention comprises a heat insulating box having a vacuum heat insulating material between an outer box and an inner box, and a storage room inside the heat insulating box and a machine room outside the heat insulating box. The bottom wall of the heat-insulating box has a shape in which the rear part rises up, a machine room is formed outside the rear part of the bottom wall, and the vacuum heat-insulating material is disposed in the side wall of the heat-insulating box. The rear part of the lower end is shaped to gradually rise from the front part.

【００１５】請求項２の発明によれば、冷蔵庫の断熱箱
体の側壁内に取り付ける真空断熱材の形状を、その下端
後部が前部から徐々に立ち上がる形状としたので、断熱
箱体の底壁後部を立ち上げ、この底壁後部の外側に機械
室を構成したものにおいて、機械室を避けるかたちで真
空断熱材を側壁内に取り付けることができるようにな
る。According to the second aspect of the present invention, the shape of the vacuum heat insulating material attached to the side wall of the heat insulating box of the refrigerator is such that the rear end of the lower end thereof gradually rises from the front, so that the bottom wall of the heat insulating box is formed. When the rear part is raised and the machine room is formed outside the rear part of the bottom wall, the vacuum heat insulating material can be attached to the side wall while avoiding the machine room.

【００１６】これによって、機械室による断熱箱体の形
状に係わらず、真空断熱材を断熱箱体の底部に広い面積
で設置し、その断熱効果を向上させることが可能となる
と共に、特に、冷凍室を断熱箱体内の最底部に設けるも
のでは、最も断熱したい部分に効果的に真空断熱材を設
けることができるようになるので、総じて断熱箱体の壁
厚を薄くして冷蔵庫の設置スペースをより一層縮小し、
若しくは、有効容積を拡大し、或いは、冷却装置の消費
電力の一層の削減を図ることができるようになる。[0016] Thus, regardless of the shape of the heat insulating box formed by the machine room, the vacuum heat insulating material can be installed in a large area at the bottom of the heat insulating box to improve its heat insulating effect. If the room is provided at the bottom of the heat insulation box, the vacuum insulation material can be effectively provided at the part where the most heat insulation is desired.Thus, the wall thickness of the heat insulation box is generally reduced to reduce the installation space for the refrigerator. Even smaller,
Alternatively, the effective volume can be increased, or the power consumption of the cooling device can be further reduced.

【００１７】また、真空断熱材自体が係る形状となるこ
とにより、真空断熱材を構成するコア材が先細り形状と
なるので、ガスバリアフィルム内に挿入する作業も容易
となり、真空断熱材自体の組立作業性も向上するもので
ある。Further, since the core material constituting the vacuum heat insulating material has a tapered shape due to the shape of the vacuum heat insulating material itself, the work of inserting the vacuum heat insulating material into the gas barrier film becomes easy, and the assembly work of the vacuum heat insulating material itself becomes easy. The property is also improved.

【００１８】[0018]

【発明の実施の形態】次に、図面に基づき本発明の実施
形態を詳述する。図１は本発明の冷蔵庫１の正面図、図
２は扉を除く冷蔵庫１の正面図、図３は冷蔵庫１の縦断
側面図、図４は冷蔵庫１の背面図、図５は冷蔵庫１のも
う一つの縦断側面図、図６は図５のＡ−Ａ線断面図、図
７は図６のＢ−Ｂ線断面図、図８は図６のＣ−Ｃ線断面
図、図９は冷蔵庫１の透視分解斜視図である。Next, an embodiment of the present invention will be described in detail with reference to the drawings. 1 is a front view of the refrigerator 1 of the present invention, FIG. 2 is a front view of the refrigerator 1 without a door, FIG. 3 is a longitudinal side view of the refrigerator 1, FIG. 4 is a rear view of the refrigerator 1, and FIG. FIG. 6 is a sectional view taken along line AA of FIG. 5, FIG. 7 is a sectional view taken along line BB of FIG. 6, FIG. 8 is a sectional view taken along line CC of FIG. 6, and FIG. FIG.

【００１９】本発明の冷蔵庫１は、前方に開口する鋼板
製の外箱２と、硬質樹脂製の内箱３間に発泡ポリウレタ
ン断熱材４を現場発泡方式により充填して成る断熱箱体
６により構成されており、この断熱箱体６の庫内は、略
中央部に設けられた仕切板７によって上下に区画され、
仕切板７の上方を冷蔵温度（＋５℃程）に維持される冷
蔵室８（貯蔵室）としている。The refrigerator 1 according to the present invention comprises a heat-insulating box 6 formed by filling a foamed polyurethane heat-insulating material 4 between an outer box 2 made of a steel plate opening forward and an inner box 3 made of a hard resin by an in-situ foaming method. The interior of the heat-insulating box 6 is vertically partitioned by a partition plate 7 provided at a substantially central portion,
The upper part of the partition plate 7 is a refrigerating room 8 (storage room) maintained at a refrigerating temperature (about + 5 ° C.).

【００２０】仕切板７の下方は更に真空断熱材を内蔵し
た断面略Ｌ字状の断熱仕切壁９にて上下に区画され、こ
の断熱仕切壁９と仕切板７の間を野菜などの乾燥を嫌う
食品を収納するための野菜室１７（貯蔵室）とし、断熱
仕切壁９の下方を凍結温度（−２０℃程）に冷却される
冷凍室１８（貯蔵室）としている。The lower part of the partition plate 7 is further vertically divided by a heat insulating partition wall 9 having a substantially L-shaped cross-section and containing a vacuum heat insulating material, and the space between the heat insulating partition wall 9 and the partition plate 7 is used for drying vegetables and the like. A vegetable compartment 17 (storage compartment) for storing disliked food is provided, and a freezing compartment 18 (storage compartment) below the heat insulating partition wall 9 is cooled to a freezing temperature (about -20 ° C).

【００２１】前記冷蔵室８内には上下複数段の棚２１・
・が架設されており、その下部には氷温（０℃〜−３
℃）に維持される氷温室２２が形成されている。また、
冷蔵室８の前面開口は回動式の扉２３にて開閉自在に閉
塞されている。The refrigerator 21 has a plurality of shelves 21 and
・ The ice temperature (0 ° C to -3
(° C.) is formed. Also,
The front opening of the refrigerator compartment 8 is closed by a pivotable door 23 so as to be openable and closable.

【００２２】更に、冷蔵室８の背部には冷蔵室ダクト２
４が上下に渡って形成されており、その左右には冷蔵室
ダクト２４の上端部と冷蔵室８内に連通した冷蔵室冷気
吐出口２６が上下に複数形成されている。また、前記氷
温室２２内にも氷温室冷気吐出口２５が形成されると共
に、その奥部及び底部（仕切板７）には冷蔵室冷気戻り
口２７が形成されている。Further, the refrigerator compartment duct 2 is provided at the back of the refrigerator compartment 8.
4 are formed vertically, and on the left and right sides thereof, a plurality of refrigerator air outlets 26 communicating with the upper end of the refrigerator compartment 24 and the refrigerator 8 are formed vertically. Further, an ice greenhouse cold air discharge port 25 is formed inside the ice greenhouse 22, and a cold storage room cool air return port 27 is formed at the back and bottom (partition plate 7).

【００２３】前記野菜室１７の奥上部には前記冷蔵室冷
気戻り口２７に連通した野菜室冷気吐出口３１が形成さ
れており、更に右上奥には野菜室冷気戻り口３２が形成
されている。この野菜室１７の前面開口は引き出し式の
扉３３により開閉自在に閉塞されると共に、この扉３３
の裏面には上面に開口した野菜容器３４が取り付けら
れ、この野菜容器３４が野菜室１７内に配置され、野菜
を収納するかたちとなる。A vegetable compartment cool air discharge port 31 communicating with the refrigerator compartment cool air return port 27 is formed in the upper rear portion of the vegetable compartment 17, and a vegetable compartment cool air return port 32 is formed in the upper right rear portion. . The front opening of the vegetable compartment 17 is openably and closably closed by a drawer-type door 33, and the door 33
A vegetable container 34 having an opening on the upper surface is attached to the back surface of the container, and the vegetable container 34 is disposed in the vegetable compartment 17 to store vegetables.

【００２４】前記冷凍室１８の背部には仕切板３６によ
り冷却室３７が画成されており、この冷却室３７は冷凍
室１８の背方から断熱仕切壁９の背方まで渡っている。
そして、この冷却室３７内には冷却装置を構成する冷却
器３８が縦設されると共に、この冷却器３８の上方の冷
却室３７内には送風機３９が設置されている。尚、４１
は冷却器３８の除霜ヒータである。A cooling chamber 37 is defined at the back of the freezing chamber 18 by a partition plate 36, and extends from the back of the freezing chamber 18 to the back of the heat insulating partition wall 9.
In the cooling chamber 37, a cooler 38 constituting a cooling device is installed vertically, and a blower 39 is installed in the cooling chamber 37 above the cooler 38. Incidentally, 41
Denotes a defrost heater of the cooler 38.

【００２５】この冷凍室１８の前面開口は上下二段の引
き出し式の扉４２、４３により開閉自在に閉塞されると
共に、これら扉４２、４３の裏面にはそれぞれ上面に開
口した容器４４、４６が取り付けられ、この容器４４、
４６が冷凍室１８内の上下に配置され、冷凍食品やアイ
スクリームなどを収納するかたちとなる。The front opening of the freezer compartment 18 is closed openably and closably by two upper and lower drawer-type doors 42 and 43, and containers 44 and 46 having upper surfaces respectively opened on the back surfaces of the doors 42 and 43. Attached, this container 44,
Reference numerals 46 are arranged above and below the freezer compartment 18 to store frozen food, ice cream, and the like.

【００２６】前記仕切板３６と冷却器３８及び送風機３
９間には冷気分配用ダクト４７が形成されており、仕切
板３６にはこのダクト４７と冷凍室１８とに連通した冷
凍室冷気吐出口４８、４９が各容器４４、４６の上奥部
に対応して開口している。また、容器４６の背方には冷
却室３７の下部に連通した冷凍室冷気戻り口５１が形成
されている。The partition plate 36, the cooler 38 and the blower 3
A cooling air distribution duct 47 is formed between the cylinders 9, and freezing room cold air discharge ports 48, 49 communicating with the duct 47 and the freezing room 18 are formed in the partition plate 36 at the upper back of the containers 44, 46. Open correspondingly. In addition, a freezer compartment cool air return port 51 communicating with a lower portion of the cooling compartment 37 is formed behind the container 46.

【００２７】ダクト４７の上部には送風機３９の側方に
位置して冷気分配口５２が形成され、この冷気分配口５
２が冷蔵室ダクト２４の下端に連通している。また、冷
却器３８の側方には冷蔵室・野菜室冷気戻りダクト５３
が形成されており、その上端は前記野菜室冷気戻り口３
２に連通し、その下端は冷却室３７の下部に開口した冷
蔵室・野菜室冷気戻り口５４にて冷却室３７内に連通し
ている。尚、図２では断熱仕切壁９及び仕切板３６を撤
去している。At the upper part of the duct 47, a cool air distribution port 52 is formed on the side of the blower 39.
2 communicates with the lower end of the refrigerator compartment duct 24. In addition, beside the cooler 38, a cold air return duct 53 is provided in the refrigerator compartment / vegetable compartment.
The upper end of which is formed in the vegetable compartment cool air return port 3
The lower end thereof communicates with the inside of the cooling chamber 37 through a cold air return port 54 for opening the refrigerator compartment / vegetable compartment opened at the lower part of the cooling compartment 37. In FIG. 2, the heat insulating partition wall 9 and the partition plate 36 are removed.

【００２８】一方、断熱箱体６の底壁６Ａは後部が階段
状に立ち上がる形状とされており、この底壁６Ａの後部
外側には機械室５６が形成されている。この機械室５６
内には冷却装置を構成する圧縮機５７、蒸発皿コンデン
サ５８及び主コンデンサ５９が設置される。また、底壁
６Ａが係る形状とされている関係上、冷凍室１８の底部
も後部が立ち上がる形状とされ、そのため、下方の容器
４６の後面は上方の容器４４の後面よりも前方に位置す
るかたちとなる。そして、前記冷却器３８は立ち上がっ
た底壁６Ａの上方に位置することになる。On the other hand, the bottom wall 6A of the heat-insulating box 6 is formed such that the rear portion rises in a stepped manner, and a machine room 56 is formed outside the rear portion of the bottom wall 6A. This machine room 56
Inside, a compressor 57, an evaporating dish condenser 58, and a main condenser 59 constituting a cooling device are installed. In addition, since the bottom wall 6A has such a shape, the bottom of the freezing compartment 18 also has a shape in which the rear rises, so that the rear surface of the lower container 46 is located forward of the rear surface of the upper container 44. Becomes The cooler 38 is located above the raised bottom wall 6A.

【００２９】他方外箱２の内面には高温冷媒配管６１が
交熱的に添設（貼付）され、断熱箱体６の開口周縁に位
置する外箱２の内面にも高温冷媒配管６２が設けられて
いる。そして、圧縮機５７の吐出側は前記蒸発皿コンデ
ンサ５８に接続され、蒸発皿コンデンサ５８の出口は主
コンデンサ５９に接続される。主コンデンサ５９の出口
は前記高温冷媒配管６１に接続され、高温冷媒配管６１
の出口は前記開口周縁の高温冷媒配管６２に接続され
る。そして、この高温冷媒配管６２は図示しないキャピ
ラリチューブを経て前記冷却器３８に接続され、冷却器
３８の出口は圧縮機５７の吸込側に接続される。On the other hand, a high-temperature refrigerant pipe 61 is alternately attached (attached) to the inner surface of the outer box 2, and a high-temperature refrigerant pipe 62 is also provided on the inner surface of the outer box 2 located at the periphery of the opening of the heat insulating box 6. Have been. The discharge side of the compressor 57 is connected to the evaporating dish condenser 58, and the outlet of the evaporating dish condenser 58 is connected to the main condenser 59. The outlet of the main condenser 59 is connected to the high-temperature refrigerant pipe 61,
Is connected to a high-temperature refrigerant pipe 62 around the opening. The high-temperature refrigerant pipe 62 is connected to the cooler 38 via a capillary tube (not shown), and the outlet of the cooler 38 is connected to the suction side of the compressor 57.

【００３０】係る構成で、圧縮機５７が運転されると、
圧縮機５７からは高温高圧のガス冷媒が吐出され、蒸発
皿コンデンサ５８、主コンデンサ５９に順次流入して放
熱し、凝縮されて行く。主コンデンサ５９を出た冷媒は
高温冷媒配管６１に流入して更に放熱し、次に、高温冷
媒配管６２に流入して開口周縁を加熱する。これによっ
て、開口周縁への結露を解消する。In this configuration, when the compressor 57 is operated,
A high-temperature and high-pressure gas refrigerant is discharged from the compressor 57, flows into the evaporating dish condenser 58 and the main condenser 59 in order, releases heat, and is condensed. The refrigerant flowing out of the main condenser 59 flows into the high-temperature refrigerant pipe 61 to further radiate heat, and then flows into the high-temperature refrigerant pipe 62 to heat the periphery of the opening. Thereby, dew condensation on the periphery of the opening is eliminated.

【００３１】高温冷媒配管６２を出た冷媒は前記キャピ
ラリチューブにて減圧された後、冷却器３８に入って蒸
発する。このときに周囲から熱を奪い、冷却室３７内の
空気を冷却する。冷却器３８を出た冷媒は再び圧縮機５
７に吸い込まれる。The refrigerant flowing out of the high-temperature refrigerant pipe 62 is decompressed by the capillary tube, enters the cooler 38 and evaporates. At this time, heat is taken from the surroundings, and the air in the cooling chamber 37 is cooled. The refrigerant that has exited from the cooler 38 is again
It is sucked into 7.

【００３２】前述の如く冷却器３８にて冷却された冷気
は上方の送風機３９の運転により吸引され、前方の分配
ダクト４７に吹き出される。分配ダクト４７に吹き出さ
れた冷気は冷凍室冷気吐出口４８、４９から冷凍室１８
内の各容器４４、４６内に吐出され、−２０℃程の凍結
温度に冷却する。尚、冷凍室１８内の冷気は冷凍室冷気
戻り口５１から冷却器３８の吸い込み側の冷却室３７内
に帰還する。As described above, the cool air cooled by the cooler 38 is sucked by the operation of the upper blower 39 and is blown out to the distribution duct 47 on the front side. The cool air blown out to the distribution duct 47 flows from the cool room discharge ports 48 and 49 to the freezer room 18.
Is discharged into each of the containers 44 and 46 and cooled to a freezing temperature of about −20 ° C. The cool air in the freezer compartment 18 returns from the freezer cool air return port 51 into the cooling compartment 37 on the suction side of the cooler 38.

【００３３】分配ダクト４７に吹き出された冷気はま
た、冷気分配口５２から冷蔵室ダクト２４に流入し、そ
こを上昇した後、各冷蔵室冷気吐出口２６・・及び氷温
室冷気吐出口２５より冷蔵室８及び氷温室２２内に吐出
される。冷蔵室ダクト２４内には冷蔵室８内の温度にて
開閉する図示しないダンパーが設けられており、これに
よって、冷蔵室８内は＋５℃程の冷蔵温度に維持される
と共に、氷温室２２内は０℃〜−３℃程の氷温に維持さ
れる。The cold air blown out to the distribution duct 47 also flows into the refrigerator compartment duct 24 from the cool air distribution port 52 and rises there. After that, the cold air is discharged from each of the refrigerator compartment cold air discharge ports 26. It is discharged into the refrigeration room 8 and the ice temperature room 22. A not-shown damper that opens and closes at the temperature in the refrigerator compartment 8 is provided in the refrigerator compartment duct 24, whereby the refrigerator compartment 8 is maintained at a refrigerator temperature of about + 5 ° C. Is maintained at an ice temperature of about 0 ° C. to −3 ° C.

【００３４】各室８、２２内を循環した冷気は冷蔵室冷
気戻り口２７に流入して野菜室冷気吐出口３１などから
野菜室１７内に入り、野菜室容器３４内を周囲から保冷
する。そして、野菜室１７内を循環した冷気は野菜室冷
気戻り口３２より冷蔵室・野菜室冷気戻りダクト５３に
流入し、そこを流下して冷蔵室・野菜室冷気戻り口５４
より冷却器３８の吸い込み側の冷却室３７内に帰還す
る。The cold air circulated in each of the chambers 8 and 22 flows into the cold room return port 27, enters the vegetable room 17 from the vegetable room cold air discharge port 31 and the like, and keeps the inside of the vegetable room container 34 cool from the surroundings. Then, the cool air circulated in the vegetable room 17 flows into the cool room / vegetable room cool air return duct 53 from the vegetable room cool air return port 32, flows down there, and returns to the cool room / vegetable room cool air return port 54.
It returns to the cooling chamber 37 on the suction side of the cooler 38.

【００３５】一方、冷凍室１８の両側方に対応する外箱
２の側板２Ａ、２Ａ内面には真空断熱材７１、７１が貼
り付けられると共に、冷凍室１８の下方に対応する外箱
２の底板２Ｂ内面にも真空断熱材７２が貼り付けられ、
断熱材４内に埋設されている。また、冷凍室１８の背方
の冷却室３７背方に対応する外箱２の背板２Ｃ内面にも
真空断熱材７３が貼り付けられ、断熱材４内に埋設され
ている。On the other hand, vacuum heat insulating materials 71, 71 are adhered to the inner surfaces of the side plates 2A, 2A of the outer box 2 corresponding to both sides of the freezing room 18, and the bottom plate of the outer box 2 corresponding to the lower part of the freezing room 18. A vacuum heat insulating material 72 is also attached to the inner surface of 2B,
It is embedded in the heat insulating material 4. The vacuum heat insulating material 73 is also attached to the inner surface of the back plate 2C of the outer box 2 corresponding to the rear of the freezing room 18 behind the cooling room 37, and is buried in the heat insulating material 4.

【００３６】各真空断熱材７１、７２、７３は、例えば
内側からポリエチレン若しくはポリプロピレンなどから
成る熱溶着層とアルミニウム層及び表面保護層をラミネ
ートしたガスバリアフィルムを折り返し、二辺を密着さ
せて熱溶着層を相互に溶着することにより袋状とし、そ
の状態でシリカ、パーライトなどの微粉末、及び、グラ
スファイバ、或いは、連続気泡の発泡ポリウレタン断熱
材から成るコア材を挿入し、所定の真空排気装置内にお
いて袋内部のガスを排気して真空状態とした後、残りの
一辺の前記熱溶着層を相互に溶着させて密封することに
より、製造されている。Each of the vacuum heat insulating materials 71, 72, 73 is formed by folding a gas barrier film in which a heat welding layer made of, for example, polyethylene or polypropylene, an aluminum layer and a surface protection layer are laminated from the inside, and two sides thereof are brought into close contact with each other. Are welded to each other to form a bag, and in that state, a fine powder such as silica or pearlite, and a core material made of glass fiber or open-cell foamed polyurethane heat insulating material are inserted, and a predetermined vacuum exhaust device is inserted. After the gas in the bag is evacuated to a vacuum state, the heat-welding layers on the other side are mutually welded and sealed.

【００３７】このうち、冷凍室１８の両側方に位置する
真空断熱材７１、７１の上部は図５に示す如く野菜室１
７を経て冷蔵室８の下部まで延在すると共に、真空断熱
材７１、７１の下端縁７１Ａはその後部が前部よりも所
定の角度で徐々に立ち上がる傾斜形状とされている。こ
れにより、真空断熱材７１の下端縁７１Ａは底壁６Ａの
形状に近似した形状となり、真空断熱材７１、７１は機
械室５６を避けて冷凍室１８底部の前部から後部に渡る
略全域をカバーするようになる。Of these, the upper portions of the vacuum heat insulating materials 71, 71 located on both sides of the freezing compartment 18 are provided with the vegetable compartment 1 as shown in FIG.
7, the lower end edge 71A of the vacuum heat insulating material 71, 71 has an inclined shape in which the rear portion gradually rises at a predetermined angle from the front portion. Thereby, the lower end edge 71A of the vacuum heat insulating material 71 has a shape similar to the shape of the bottom wall 6A, and the vacuum heat insulating materials 71, 71 cover substantially the entire area from the front part to the rear part of the bottom of the freezing chamber 18 avoiding the machine room 56. Will come to cover.

【００３８】これによって、機械室５６による断熱箱体
６の底壁６Ａの形状に係わらず、真空断熱材７１、７１
を断熱箱体６の底部に広い面積で貼り付け、その断熱効
果を向上させることができるようになる。特に、最も断
熱したい冷凍室１８の側方略全域に真空断熱材７１、７
１を設けることができるようになるので、断熱箱体６の
壁厚を薄くして冷蔵庫１の設置スペースをより一層縮小
し、若しくは、有効容積を拡大し、或いは、冷却装置の
消費電力の一層の削減を図ることができるようになる。Thus, regardless of the shape of the bottom wall 6A of the heat insulating box 6 formed by the machine room 56, the vacuum heat insulating materials 71, 71 are provided.
Is attached to the bottom of the heat insulation box 6 with a large area, and the heat insulation effect can be improved. In particular, the vacuum heat insulating materials 71 and 7 are provided almost all over the side of the freezing room 18 where heat insulation is most desired.
1 can be provided, so that the wall thickness of the heat insulating box 6 is reduced to further reduce the installation space of the refrigerator 1, or to increase the effective volume, or to further increase the power consumption of the cooling device. Can be reduced.

【００３９】また、真空断熱材７１を係る形状とするた
めに、真空断熱材７１を構成するコア材も先細り形状と
なるので、ガスバリアフィルム内に挿入する作業も容易
となり、真空断熱材７１自体の組立作業性も向上する。
尚、この場合コア材が細くなる先端側となるガスバリア
フィルムの熱溶着部分は略三角形状に余る状態となる
が、この余り部分はコア材の形状に沿って切除するもの
とする。In addition, since the vacuum heat insulating material 71 has such a shape, the core material constituting the vacuum heat insulating material 71 also has a tapered shape, so that the work of inserting the inside of the gas barrier film becomes easy, and the vacuum heat insulating material 71 itself is formed. Assembly workability is also improved.
In this case, the heat-welded portion of the gas barrier film on the tip end side where the core material becomes thinner is left in a substantially triangular shape, and this surplus portion is cut off along the shape of the core material.

【００４０】更に、冷凍室１８の下方に位置する真空断
熱材７２は底壁６Ａの形状に沿って階段状に成形されて
いる。Further, the vacuum heat insulating material 72 located below the freezing compartment 18 is formed stepwise along the shape of the bottom wall 6A.

【００４１】一方、冷凍室１８の背方に位置する真空断
熱材７３は全体としては矩形状を呈している。また、そ
のコア材は図６に示す如く冷却器３８と送風機３９を含
む領域の背方投影面積よりも大成る寸法とされている。On the other hand, the vacuum heat insulating material 73 located behind the freezing compartment 18 has a rectangular shape as a whole. As shown in FIG. 6, the core material has a size larger than the rear projection area of the area including the cooler 38 and the blower 39.

【００４２】ここで、これら真空断熱材の周縁部にはコ
ア材は存在しておらず、ガスバリアフィルムのみとなっ
ているため、真空断熱材の周縁部における熱移動は大き
くなり断熱性能は悪化する（これをヒートブリッジと云
う）。Here, since the core material does not exist at the peripheral portion of the vacuum heat insulating material and is made of only the gas barrier film, the heat transfer at the peripheral portion of the vacuum heat insulating material increases, and the heat insulating performance deteriorates. (This is called a heat bridge.)

【００４３】これに対して、前述の如く真空断熱材７３
のコア材を冷却器３８と送風機３９を含む領域の背方投
影面積よりも大成る寸法とすれば、係るヒートブリッジ
による悪影響を受けること無く、−３０℃〜−３５℃な
どの最も低温となる冷却器３８の背方を効果的に断熱す
ることができるようになる。On the other hand, as described above, the vacuum heat insulating material 73 is used.
If the size of the core material is larger than the rear projection area of the region including the cooler 38 and the blower 39, the temperature is the lowest such as -30 ° C to -35 ° C without being affected by the heat bridge. The heat behind the cooler 38 can be effectively insulated.

【００４４】特に、送風機３９の背方もモータなどを設
置する関係から断熱箱体６の壁厚が薄くなるが、真空断
熱材７３を設置することによって、断熱性能の低下を防
止することができようになる。In particular, the wall thickness of the heat insulating box 6 is reduced due to the installation of a motor and the like on the back of the blower 39. However, by installing the vacuum heat insulating material 73, it is possible to prevent a decrease in heat insulating performance. Become like

【００４５】他方、前記高温冷媒配管６１は図９に示す
如く、向かって左側の真空断熱材７１の後方の側板２Ａ
内面を下方から上方に立ち上がり、前方にクランク状に
折れ曲がった後、上方に回って天板２Ｄ内面を右方に延
在する。そして、下方に回った後、後方にクランク状に
折れ曲がり、右側の真空断熱材７１の後方の側板２Ａ内
面を降下する。On the other hand, as shown in FIG. 9, the high-temperature refrigerant pipe 61 is connected to the left side plate 2A of the vacuum heat insulating material 71 on the left side.
The inner surface rises upward from below, bends forward in a crank shape, and then turns upward to extend rightward on the inner surface of the top plate 2D. Then, after turning downward, it is bent rearward in the shape of a crank, and descends on the inner surface of the side plate 2A behind the right vacuum insulating material 71.

【００４６】高温冷媒配管６１はそこから更に真空断熱
材７３の側方の背板２Ｃ内面を立ち上がり、真空断熱材
７３の上方に位置する背板２Ｃの内面において蛇行状に
屈曲した後、再び真空断熱材７３の側方を降下する形状
とされている。The high-temperature refrigerant pipe 61 further rises from the inner surface of the back plate 2C on the side of the vacuum heat insulating material 73, bends in a meandering manner on the inner surface of the back plate 2C located above the vacuum heat insulating material 73, and then re-evacuates. The heat insulating material 73 has a shape that descends to the side.

【００４７】このように、下方の冷却器３８背方に取り
付けた真空断熱材７３の上方の背板２Ｃ内面に図４、図
９の如く高温冷媒配管６１を貼り付けているので、真空
断熱材７１や７３の存在に係わらず、高温冷媒配管６１
の放熱能力（配管長）を確保して、冷却能力を維持する
ことができるようになる。As described above, since the high-temperature refrigerant pipe 61 is attached to the inner surface of the back plate 2C above the vacuum heat insulating material 73 attached to the back of the lower cooler 38 as shown in FIGS. Regardless of the presence of 71 or 73, the high-temperature refrigerant pipe 61
, The cooling capacity can be maintained by securing the heat radiation capacity (pipe length).

【００４８】次に、上述の如き冷蔵庫１の断熱箱体６の
組立手順を説明する。先ず、外箱２の内面の上記各位置
に各真空断熱材７１、７１、７２、７３をそれぞれ貼り
付けると共に、各高温冷媒配管６１、６２もこの時点で
外箱２の内面に取り付ける。このとき、外箱２の背板２
Ｃ中央部左右にはウレタン注入口７５、７５が形成され
ており、高温冷媒配管６１はこれを避けて取り付けられ
る。Next, the procedure for assembling the heat insulating box 6 of the refrigerator 1 as described above will be described. First, the vacuum heat insulators 71, 71, 72, 73 are respectively attached to the respective positions on the inner surface of the outer box 2, and the high-temperature refrigerant pipes 61, 62 are also attached to the inner surface of the outer box 2 at this time. At this time, the back plate 2 of the outer box 2
Urethane injection ports 75, 75 are formed on the left and right sides of the central portion of the C, and the high-temperature refrigerant pipe 61 is attached so as to avoid this.

【００４９】そして、内箱３を外箱２内に組み込んだ
後、開口を下方として所定の発泡治具内にセットする。
次に、前記ウレタン注入口７５、７５からポリウレタン
原液を注入し、両箱２、３間に充填するものであるが、
このとき、真空断熱材７１、７１の厚さ寸法は１５ｍ
ｍ、真空断熱材７３の厚さ寸法は２０ｍｍとされ、断熱
箱体６の冷凍室１８部分（図８）の断熱厚さ寸法は側壁
で４５ｍｍ、背壁で４０ｍｍ〜５０ｍｍとされている。After assembling the inner box 3 into the outer box 2, it is set in a predetermined foaming jig with the opening facing downward.
Next, a polyurethane undiluted solution is injected from the urethane injection ports 75, 75, and is filled between the two boxes 2, 3.
At this time, the thickness of the vacuum heat insulating materials 71, 71 is 15 m.
m, the thickness of the vacuum heat insulating material 73 is 20 mm, and the heat insulating thickness of the freezer compartment 18 (FIG. 8) of the heat insulating box 6 is 45 mm on the side wall and 40 mm to 50 mm on the back wall.

【００５０】他方、断熱箱体６の冷蔵室８部分（図７）
の断熱厚さ寸法は側壁で３３ｍｍ、背壁で３０ｍｍ〜４
０ｍｍとされているので、各真空断熱材７１、７３の厚
さ分を差し引いた断熱材４の厚さ寸法は、冷凍室１８部
分と冷蔵室８部分とで略同等若しくは近似した値とな
る。従って、反応成長するポリウレタン原液も両箱２、
３間に略均等に回り、断熱材４は断熱箱体６の各部に略
均一に充填されるようになる。On the other hand, the refrigerator compartment 8 of the heat insulating box 6 (FIG. 7)
The insulation thickness of the side wall is 33mm, the back wall is 30mm ~ 4mm
Since the thickness is set to 0 mm, the thickness of the heat insulating material 4 minus the thickness of the vacuum heat insulating materials 71 and 73 is substantially the same or similar between the freezing compartment 18 and the refrigerating compartment 8. Therefore, the undiluted polyurethane solution that grows by reaction is also in both boxes 2,
The heat insulating material 4 turns substantially uniformly between the three, and the heat insulating material 4 is almost uniformly filled in each part of the heat insulating box 6.

【００５１】[0051]

【発明の効果】以上詳述した如く請求項１の発明によれ
ば、冷蔵庫に取り付ける真空断熱材の形状を、機械室部
分の断熱箱体の形状に近似させたので、真空断熱材の面
積を拡張し、断熱箱体の断熱効果を向上させることが可
能となる。As described above in detail, according to the first aspect of the present invention, the shape of the vacuum heat insulating material attached to the refrigerator is approximated to the shape of the heat insulating box in the machine room, so that the area of the vacuum heat insulating material is reduced. It is possible to expand and improve the heat insulating effect of the heat insulating box.

【００５２】特に、機械室による断熱箱体の形状に係わ
らず、最も断熱したい部分に効果的に真空断熱材を設け
ることができるようになるので、総じて断熱箱体の壁厚
を薄くして冷蔵庫の設置スペースをより一層縮小し、若
しくは、有効容積を拡大し、或いは、冷却装置の消費電
力の一層の削減を図ることができるようになるものであ
る。In particular, regardless of the shape of the heat insulating box formed by the machine room, it is possible to effectively provide a vacuum heat insulating material at the portion where it is desired to be most insulated. Can further reduce the installation space, increase the effective volume, or further reduce the power consumption of the cooling device.

【００５３】請求項２の発明によれば、冷蔵庫の断熱箱
体の側壁内に取り付ける真空断熱材の形状を、その下端
後部が前部から徐々に立ち上がる形状としたので、断熱
箱体の底壁後部を立ち上げ、この底壁後部の外側に機械
室を構成したものにおいて、機械室を避けるかたちで真
空断熱材を側壁内に取り付けることができるようにな
る。According to the second aspect of the present invention, the shape of the vacuum heat insulating material attached to the side wall of the heat insulating box of the refrigerator is such that the rear end of the lower end thereof gradually rises from the front, so that the bottom wall of the heat insulating box is formed. When the rear part is raised and the machine room is formed outside the rear part of the bottom wall, the vacuum heat insulating material can be attached to the side wall while avoiding the machine room.

【００５４】これによって、機械室による断熱箱体の形
状に係わらず、真空断熱材を断熱箱体の底部に広い面積
で設置し、その断熱効果を向上させることが可能となる
と共に、特に、冷凍室を断熱箱体内の最底部に設けるも
のでは、最も断熱したい部分に効果的に真空断熱材を設
けることができるようになるので、総じて断熱箱体の壁
厚を薄くして冷蔵庫の設置スペースをより一層縮小し、
若しくは、有効容積を拡大し、或いは、冷却装置の消費
電力の一層の削減を図ることができるようになる。Thus, regardless of the shape of the heat insulating box formed by the machine room, the vacuum heat insulating material can be installed in a large area at the bottom of the heat insulating box to improve its heat insulating effect. If the room is provided at the bottom of the heat insulation box, the vacuum insulation material can be effectively provided at the part where the most heat insulation is desired.Thus, the wall thickness of the heat insulation box is generally reduced to reduce the installation space for the refrigerator. Even smaller,
Alternatively, the effective volume can be increased, or the power consumption of the cooling device can be further reduced.

【００５５】また、真空断熱材自体が係る形状となるこ
とにより、真空断熱材を構成するコア材が先細り形状と
なるので、ガスバリアフィルム内に挿入する作業も容易
となり、真空断熱材自体の組立作業性も向上するもので
ある。Further, since the vacuum heat insulating material itself has such a shape, the core material constituting the vacuum heat insulating material has a tapered shape, so that the work of inserting into the gas barrier film becomes easy, and the work of assembling the vacuum heat insulating material itself becomes easy. The property is also improved.

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

【図１】本発明の冷蔵庫の正面図である。FIG. 1 is a front view of a refrigerator according to the present invention.

【図２】扉を除く本発明の冷蔵庫の正面図である。FIG. 2 is a front view of the refrigerator of the present invention excluding a door.

【図３】本発明の冷蔵庫の縦断側面図である。FIG. 3 is a vertical sectional side view of the refrigerator of the present invention.

【図４】本発明の冷蔵庫の背面図である。FIG. 4 is a rear view of the refrigerator of the present invention.

【図５】本発明の冷蔵庫のもう一つの縦断側面図であ
る。FIG. 5 is another longitudinal side view of the refrigerator of the present invention.

【図６】図５のＡ−Ａ線断面図である。FIG. 6 is a sectional view taken along line AA of FIG. 5;

【図７】図６のＢ−Ｂ線断面図である。FIG. 7 is a sectional view taken along the line BB of FIG. 6;

【図８】図６のＣ−Ｃ線断面図である。FIG. 8 is a sectional view taken along line CC of FIG. 6;

【図９】本発明の冷蔵庫の透視分解斜視図である。FIG. 9 is a perspective exploded perspective view of the refrigerator of the present invention.

【符号の説明】[Explanation of symbols]

１ 冷蔵庫 ２ 外箱 ３ 内箱 ４ ポリウレタン断熱材 １８ 冷凍室 ５６ 機械室 ７１ 真空断熱材 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Outer box 3 Inner box 4 Polyurethane insulation material 18 Freezer room 56 Machine room 71 Vacuum insulation material

フロントページの続き (72)発明者 藤堂 淳一 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 茂木 秀文 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内Continuation of the front page (72) Junichi Todo 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Hidefumi Mogi 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 外箱と内箱間に真空断熱材を備えた断熱
箱体から成り、この断熱箱体内に貯蔵室を、断熱箱体外
には機械室を構成して成る冷蔵庫において、前記真空断
熱材の形状を、前記機械室部分の前記断熱箱体の形状に
近似させたことを特徴とする冷蔵庫。1. A refrigerator comprising a heat insulating box provided with a vacuum heat insulating material between an outer box and an inner box, comprising a storage room inside the heat insulating box and a machine room outside the heat insulating box. A refrigerator wherein the shape of the vacuum heat insulating material is approximated to the shape of the heat insulating box in the machine room portion. 【請求項２】 外箱と内箱間に真空断熱材を備えた断熱
箱体から成り、この断熱箱体内に貯蔵室を、断熱箱体外
には機械室を構成して成る冷蔵庫において、 前記断熱箱体の底壁は後部が立ち上がる形状を呈し、こ
の底壁後部の外側に前記機械室が構成されると共に、前
記真空断熱材は前記断熱箱体の側壁内に配設され、その
下端後部は前部から徐々に立ち上がる形状とされている
ことを特徴とする冷蔵庫。2. A refrigerator comprising a heat insulating box provided with a vacuum heat insulating material between an outer box and an inner box, comprising a storage room inside the heat insulating box and a machine room outside the heat insulating box. The bottom wall of the heat-insulating box has a shape in which a rear portion stands up, and the machine room is formed outside the rear portion of the bottom wall, and the vacuum heat-insulating material is disposed in the side wall of the heat-insulating box, and the lower rear portion thereof is provided. Is a refrigerator characterized by a shape that gradually rises from the front.