JP4021107B2

JP4021107B2 - Cold storage

Info

Publication number: JP4021107B2
Application number: JP25311199A
Authority: JP
Inventors: 義一畠山; 茂一小池
Original assignee: Sanden Corp
Current assignee: Sanden Holdings Corp
Priority date: 1999-09-07
Filing date: 1999-09-07
Publication date: 2007-12-12
Anticipated expiration: 2019-09-07
Also published as: JP2001074356A

Description

【０００１】
【発明の属する技術分野】
本発明は、保冷庫本体内の物品を冷却し、物品の品質を保持する保冷庫に関するものである。
【０００２】
【従来の技術】
従来、この種の保冷庫としては、前面に開閉扉を有し内箱と外箱との間に断熱材を充填して成り内部に物品を収納する断熱箱と、断熱箱の上部に設けられた機械室と、機械室に配置された圧縮機、凝縮器、凝縮器用ファン、アキュムレータ等及び庫内の底面側に配置された蒸発器から構成される冷却機器とを備え、断熱材で覆われたアキュムレータが断熱箱に固定されているものが知られている。アキュムレータの断熱箱への固定方法は、アキュムレータ用固定金具を介してネジ等によりアキュムレータを外箱に固定する方法が一般的である。しかし、アキュムレータは冷媒の入口用パイプと出口用パイプをその上部に有しており、この固定方法ではアキュムレータの高さに合わせて機械室の天井を高くしなければならず保冷庫が大型となるという問題点があった。
【０００３】
そこで、アキュムレータ取付位置が外箱より下方となるように外箱を切欠いてアキュムレータの取付台を断熱箱に設け、アキュムレータをアキュムレータ用固定金具を介してネジ等により取付台に固定することにより、機械室の天井を低くした保冷庫が用いられている。
【０００４】
【発明が解決しようとする課題】
しかしながら、前記取付台を用いた保冷庫においては、取付台が外箱より低い位置に設けられているため、取付台下部で内箱と取付台との間の断熱材の厚さが薄くなって取付台の内周縁からの侵入熱が増大し、機械室と物品収納室との断熱性が低下し、この結果、物品収納室の冷却効率が低下して物品収納室の冷却効率が悪くなるという問題点があった。また、取付台は金属で形成されており取付台の機械室側で結露水が発生したり、外箱の機械室側の表面で発生した結露水が取付台に貯まるなどして、取付台付近の断熱箱の断熱材がこの結露水を吸水し、断熱性が低下するという問題点もあった。
【０００５】
本発明は前記問題点を鑑みてなされたものであり、その目的とするところは、機械室と物品収納室との断熱性が良好な保冷庫を提供することにある。
【０００６】
【課題を解決するための手段】
本発明は前記目的を達成するために、請求項１では、内箱と外箱との間に断熱材を充填してなり内部に物品を収納する断熱箱を有するとともに、該断熱箱の上面に該外箱を切り欠いて凹所を形成し、該凹所に物品冷却装置の構成部品で断熱材で覆われたアキュムレータを配置した保冷庫において、前記凹所の表面に伝熱性の低い水密シートを固着している。これにより、この水密シートが伝熱性の低いものとなっているので結露が抑制され、また、結露したとしてもこの結露水が凹所より断熱箱内部に浸入することはない。
【０００７】
また、請求項２では、請求項１記載の保冷庫において、前記水密シートは樹脂等の可撓性部材で形成している。これにより、請求項１の作用に加え、水密シートが断熱箱の凹所及びアキュムレータの断熱材の形状に合わせて変形する。
【０００８】
また、請求項３では、請求項１または２記載の保冷庫において、前記アキュムレータの外側面と前記凹所の内側面との間に気密保持用のシール部材を埋め込み該アキュムレータを該凹所に固定している。これにより、請求項１または２の作用に加え、断熱箱外部からの水及び空気の浸入が規制される。
【０００９】
また、請求項４では、内箱と外箱との間に断熱材を充填してなり内部に物品を収納する断熱箱を有し、該断熱箱の上面に該外箱を切り欠いて物品冷却装置の構成部品で断熱材に覆われたアキュムレータを配置した保冷庫において、前記断熱箱の断熱材と前記アキュムレータの断熱材とを一体に形成している。これにより、断熱箱の断熱材とアキュムレータの断熱材との間で結露することはない。また、アキュムレータの断熱材は断熱箱の断熱材の製造時に一括的に製造される。
【００１０】
【発明の実施の形態】
図１及至図３は本発明の保冷庫の第１の実施形態を示すもので、図１は保冷庫の全体斜視図、図２は保冷庫の側面断面図、図３は保冷庫の部分側面断面図である。
【００１１】
保冷庫本体１は、前面を開口し内部に物品収納室１ａを形成する断熱箱２と、断熱箱２の前面を開閉する前面扉１ｂと、物品収納室１ａを冷却するための冷却装置３と、断熱箱２の上方に設けられた機械室４とを有している。
【００１２】
断熱箱２は、内箱２ａと外箱２ｂとの間に断熱材２ｃを充填して形成された箱体であり、上側の内箱２ａ、外箱２ｂはそれぞれ機械室４と物品収納室１ａとを仕切る内面板２ｄ、外面板２ｅを形成する。断熱材２ｃは外面板２ｅ側に凹所２ｆを有し、外面板２ｅは凹所２ｆと対応する部位に切欠２ｇを有している。また、凹所２ｆにはその表面を覆い周縁が外面板２ｅの機械室４側の表面に位置する可撓性のビニールシート２ｈが設けられている。
【００１３】
冷却装置３は、圧縮機５、凝縮器６、凝縮器用ファン７、膨張弁（図示なし）、蒸発器８、アキュムレータ９とから構成され、蒸発器８と物品収納室１ａ内の空気との熱交換により物品収納室１ａ内を冷却している。
【００１４】
機械室４には、圧縮機５、凝縮器６、凝縮器用ファン７、アキュムレータ９が配置され、それぞれ断熱箱２に固定されている。
【００１５】
アキュムレータ９は、図３に示すように、アキュムレータ本体９ａ、一対の冷媒パイプ９ｂ、断熱材９ｃから構成され、外面板２ｅの切欠２ｇを挿通して断熱材２ｃの凹所２ｆに固定されている。円筒状のアキュムレータ本体９ａの上面には、冷媒の入口及び出口となる各冷媒パイプ９ｂが接続され、アキュムレータ本体９ａの外側は断熱材９ｃにより覆われている。ここで、凹所２ｆは断熱材９ｃの下面と密着するように形成されており、断熱材９ｃの外側面と凹所２ｆの内側面及び切欠２ｇとの間には気密保持用のシール部材１０が設けられ、この場合、アキュムレータ本体９ａの下面が外面板２ｅと同じ高さとなるよう断熱材２ｃの凹所２ｆに固定されている。
【００１６】
次に、第１の実施形態の保冷庫に用いる断熱箱２の製造方法及びアキュムレータ９の設置方法について説明する。図３乃至図６は第１の実施形態による保冷庫に用いる断熱箱の製造方法及びアキュムレータの設置方法を示すもので、図４乃至図６は断熱箱及び治具の正面拡大断面図である。
【００１７】
まず、内箱２ａと、外面板２ｅに切欠２ｇを有する外箱２ｂと、可撓性を有するビニールシート２ｈと、切欠２ｇと同じ大きさの凸部１１ａを有する治具１１を用意する。
【００１８】
次いで、図４に示すように外面板２ｅと内面板２ｄとを所定距離をおいて配置し、更にビニールシート２ｈを切欠２ｇに覆うように外面板２ｅに固着する。そして、凸部１１ａが切欠２ｇの内面板２ｄ側となるよう治具１１を外面板２ｅに設置する。ここで、ビニールシート２ｈは可撓性を有しているので、その中央部が凸部１１ａの表面と接触しながら内面板２ｄ側に移動する。次に、図５に示すように、外面板２ｅと内面板２ｄとの間に断熱材２ｃを充填する。ここで、ビニールシート２ｈは可撓性を有しているので、断熱材２ｃからの圧力により、治具１１の凸部１１ａの表面に沿って変形する。次に、図６に示すように、断熱材２ｃの充填後に治具１１を断熱材２ｃの外側に移動させ切欠２ｇから引き抜く。これにより、凹所２ｆを有した断熱箱２が形成される。しかる後、図３に示すように、この凹所２ｆにアキュムレータ９を収納し、アキュムレータ９の周側面を凹所２ｆとの内側面との間にシール部材１０を埋め込み、アキュムレータ９を凹所２ｆに固定する。
【００１９】
このように、本実施形態の保冷庫によれば、断熱箱２の凹所２ｆにおいて、従来の如く金属製（伝熱性の高い材料）の取付台を介してアキュムレータ９を設置することなく、伝熱性の低いビニールシート２ｈを介してアキュムレータ９を設置しているため、断熱箱２内の冷熱の影響が少なく、この凹所２ｆにおける結露の発生を抑制できる。また、万が一凹所２ｆに結露が発生したとしても、ビニールシート２ｈが水密性となっているため、この結露水が断熱材２ｃに吸水されることがなく、この結果、断熱箱２の断熱機能が低下することがない。更に、このビニールシート２ｈは可撓性を有するため、凹所２ｆを形成する際、ビニールシート２ｈが治具１１の凸部１１ａに密着し、アキュムレータ９の外形状に適合する凹所２ｆを形成できる。
【００２０】
また、この凹所２ｆの内周面とアキュムレータ９の外周面との間に気密性のシール部材１０を埋め込んでいるので、外部からの水はもとより空気の浸入も規制される。従って、凹所２ｆ内に水が溜まらないことはもとより、この凹所２ｆ内で結露が発生することもない。また、このシール部材１０はアキュムレータ９の固定手段ともなっており、従来の如きアキュムレータ用の固定金具やネジ等も不要となる。
【００２１】
尚、本実施形態においては、アキュムレータ９の断熱材９ｃの外側面と凹所２ｆの内側面及び切欠２ｇとの間に気密保持用のシール部材１０が設けたものを示したが、図７に示すようにシール部材１０を設けない構成としてもよい。
【００２２】
図８は本発明の保冷庫の第２の実施形態を示す保冷庫の部分側面断面図で、第１の実施例とは断熱箱の構造及びアキュムレータの断熱材の形状が異なっている。以下、第２の実施形態の保冷庫における断熱箱及びアキュムレータの断熱材について第１の実施形態と同一の符号を用いて説明する。
【００２３】
即ち、この保冷庫において、断熱箱２は、内箱２ａと外箱２ｂとの間に断熱材２ｃを充填して形成された箱体であり、上側の内箱２ａ、外箱２ｂはそれぞれ機械室４と物品収納室１ａとを仕切る内面板２ｄ、外面板２ｅを形成する。ここで、外面板２ｅは切欠２ｇを有し、断熱材２ｃは切欠２ｇより突出している。断熱材２ｃはこの突出した部分に底部を外面板２ｅの高さと一致させた凹所２ｆを有しており、アキュムレータ本体９ａは凹所２ｆに側面及び底面を覆われるように配置される。アキュムレータ本体９ａの上部は断熱材９ｃにより覆われており、断熱材９ｃにより凹所２ｆの内側上部が塞がれる。また、断熱材２ｃと断熱材９ｃとの間には気密保持用のシール部材１０が埋め込まれ、断熱材２ｃの突出した部分の表面を覆い周縁が外面板２ｅと断熱材２ｃとの間に位置する可撓性を有するビニールシート２ｈが設けられている。
【００２４】
次に、第２の実施形態の保冷庫に用いる断熱箱２の製造方法及びアキュムレータ９の設置方法について説明する。図８乃至図１１は第２の実施形態による保冷庫に用いる断熱箱の製造方法及びアキュムレータの設置方法を示すもので、図９乃至図１１は断熱箱及び治具の正面拡大断面図である。
【００２５】
まず、内箱２ａと、外面板２ｅに切欠２ｇを有する外箱２ｂと、可撓性を有するビニールシート２ｈと、外縁部分が切欠２ｇと同型である環状の溝を有しこの溝の内縁部分により凸部１１ａを形成している治具１１を用意する。
【００２６】
次いで、図９に示すように外面板２ｅと内面板２ｄとを所定距離をおいて配置し、更にビニールシート２ｈを切欠２ｇに覆うように外面板２ｅに固着する。そして、凸部１１ａが切欠２ｇの内面板２ｄ側となるよう治具１１を外面板２ｅに設置する。ここで、ビニールシート２ｈは可撓性を有しているので、その中央部が凸部１１ａの表面と接触しながら内面板２ｄ側に移動する。次に、図１０に示すように、外面板２ｅと内面板２ｄとの間に断熱材２ｃを充填する。ここで、ビニールシート２ｈは可撓性を有しているので、断熱材２ｃからの圧力により、治具１１の凸部１１ａ及び溝の表面に沿って変形する。次に、図１１に示すように、断熱材２ｃの充填後に治具１１を断熱材２ｃの外側に移動させ、断熱材２ｃから引き抜く。これにより、突出した部分に凹所２ｆを有した断熱箱２が形成される。しかる後、図８に示すように、この凹所２ｆにアキュムレータ９を収納し、アキュムレータ９の断熱材９ｃの周側面と凹所２ｆとの内側面との間にシール部材１０を埋め込み、アキュムレータ９を凹所２ｆに固定する。
【００２７】
このように、本実施形態の保冷庫によれば、従来の如く金属製（伝熱性の高い材料）の取付台を介してアキュムレータ９を設置することなく、断熱箱２の断熱材２ｃとアキュムレータ９の側面及び底面の断熱材を一体に形成しているため、従来の如く断熱箱２の断熱材２ｃとアキュムレータの断熱材との間で結露は発生せず、断熱材２ｃがこの結露を吸水して断熱箱２の断熱機能が低下することはない。また、断熱材２ｃはアキュムレータ９の固定手段となっており、従来の如きアキュムレータ用の固定金具やネジ等も不要となる。
【００２８】
また、断熱材２ｃの表面に結露が発生したとしても、断熱材２ｃは水密性のビニールシート２ｈにより覆われているため、この結露水が断熱材２ｃに吸水されることがなく、この結果、断熱箱２の断熱機能が低下することがない。更に、このビニールシート２ｈは可撓性を有するため、凹所２ｆを形成する際、ビニールシート２ｈが治具１１の凸部１１ａ及び溝に密着し、アキュムレータ９の外形状に適合する凹所２ｆを形成できる。
【００２９】
尚、本実施形態においては、断熱材２ｃと断熱材９ｃとの間にのみシール部材１０を設けたものを示したが、外面板２ｅと断熱材２ｃとの間にもシール部材を設けてもよい。
【００３０】
また、本実施形態においては、アキュムレータ本体９ａの側面側及び底面側の断熱を断熱箱２の断熱材２ｃにより行い、上面側の断熱をアキュムレータ９の断熱材９ｃで行うものを示したが、図１２に示すように、アキュムレータ本体９ａの底面側の断熱を断熱箱２の断熱材２ｃにより行い、上面側及び側面側の断熱をアキュムレータ９の断熱材９ｃで行うようにしてもよい。
【００３１】
【発明の効果】
以上説明したように、請求項１の保冷庫によれば、この水密シートが伝熱性の低いものとなっているので結露が抑制され、また、結露したとしてもこの結露水が凹所より断熱箱内部に浸入することはないようにしたので、断熱箱の断熱材が結露水を吸水して断熱箱の断熱機能が低下することはない。
【００３２】
また、請求項２の保冷庫によれば、請求項１の効果に加え、水密シートが断熱箱の凹所及びアキュムレータの断熱材の形状に合わせて変形するようにしたので、凹所を形成する際、アキュムレータの外形状に適合する凹所を形成できる。
【００３３】
また、請求項３の保冷庫によれば、請求項１または２の効果に加え、断熱箱外部からの水及び空気の浸入が規制されるようにしたので、凹所内に水が溜まらないことはもとよりこの凹所内での結露の発生を防止し、断熱箱の断熱材が結露水を吸水することによる断熱箱の断熱機能の低下を防止することができる。
【００３４】
また、請求項４の保冷庫によれば、断熱箱の断熱材とアキュムレータの断熱材との間で結露することはないようにしたので、断熱材がこの結露水を吸水して断熱箱の断熱機能が低下することはない。
【図面の簡単な説明】
【図１】本発明の第１の実施形態を示す保冷庫の全体斜視図
【図２】保冷庫の側面断面図
【図３】保冷庫の部分側面断面図
【図４】第１の実施形態の断熱箱の製造方法を示す治具及び断熱箱の部分側面断面図
【図５】治具及び断熱箱の部分側面断面図
【図６】治具及び断熱箱の部分側面断面図
【図７】保冷庫の部分側面断面図
【図８】本発明は第２の実施形態を示す保冷庫の部分側面断面図
【図９】第２の実施形態の断熱箱の製造方法を示す治具及び断熱箱の部分側面断面図
【図１０】治具及び断熱箱の部分側面断面図
【図１１】治具及び断熱箱の部分側面断面図
【図１２】保冷庫の部分側面断面図
【符号の説明】
１…保冷庫本体、２…断熱箱、２ｃ…断熱材、２ｆ…凹所、２ｈ…ビニールシート、９ａ…アキュムレータ本体、９ｃ…断熱材、１０…シール部材。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cool box that cools an article in a cool box body and maintains the quality of the article.
[0002]
[Prior art]
Conventionally, this type of cool box is provided at the top of the heat insulation box, which has an opening / closing door on the front and is filled with a heat insulating material between the inner box and the outer box, and stores articles inside. And a cooling device composed of a compressor, a condenser, a condenser fan, an accumulator, etc. disposed in the machine room and an evaporator disposed on the bottom side in the cabinet, and is covered with a heat insulating material. It is known that the accumulator is fixed to a heat insulating box. As a method of fixing the accumulator to the heat insulating box, a method of fixing the accumulator to the outer box with a screw or the like through an accumulator fixing bracket is general. However, the accumulator has a refrigerant inlet pipe and an outlet pipe in the upper part thereof. With this fixing method, the ceiling of the machine room must be raised in accordance with the height of the accumulator, and the cold storage becomes large. There was a problem.
[0003]
Therefore, by cutting out the outer box so that the accumulator mounting position is lower than the outer box, providing the accumulator mounting base in the heat insulating box, and fixing the accumulator to the mounting base with screws etc. via the fixing bracket for the accumulator, A cold storage room with a low ceiling is used.
[0004]
[Problems to be solved by the invention]
However, in the cool box using the mounting base, since the mounting base is provided at a position lower than the outer box, the thickness of the heat insulating material between the inner box and the mounting base is reduced at the lower part of the mounting base. Intrusion heat from the inner peripheral edge of the mounting base increases, the heat insulation between the machine room and the article storage room decreases, and as a result, the cooling efficiency of the article storage room decreases and the cooling efficiency of the article storage room deteriorates. There was a problem. In addition, the mounting base is made of metal, and condensed water is generated on the machine room side of the mounting base, and condensed water generated on the surface of the outer box on the machine room side is accumulated on the mounting base, etc. There was also a problem that the heat insulating material of the heat insulating box absorbed this condensed water and the heat insulating property was lowered.
[0005]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a cool box having good heat insulation between the machine room and the article storage room.
[0006]
[Means for Solving the Problems]
For the present invention to achieve the above object, in claim 1, which has a heat insulating box for accommodating articles therein will be filled with a heat insulating material between the inner box and the outer box, on the upper surface of the insulating box In the cool box in which the outer box is cut out to form a recess, and an accumulator covered with a heat insulating material with the component parts of the article cooling device is disposed in the recess, a water-tight sheet with low heat transfer on the surface of the recess Is fixed. Thereby, since this watertight sheet has low heat conductivity, condensation is suppressed, and even if condensation occurs, this condensed water does not enter the inside of the heat insulation box from the recess.
[0007]
Moreover, in Claim 2, in the cool box according to Claim 1, the watertight sheet is formed of a flexible member such as a resin. Thereby, in addition to the effect | action of Claim 1, a watertight sheet | seat deform | transforms according to the shape of the recessed part of a heat insulation box, and the heat insulating material of an accumulator.
[0008]
According to a third aspect of the present invention, in the cool box according to the first or second aspect, an airtight holding seal member is embedded between the outer surface of the accumulator and the inner surface of the recess, and the accumulator is fixed to the recess. is doing. Thereby, in addition to the effect | action of Claim 1 or 2, intrusion of the water and air from the heat insulation box exterior is controlled.
[0009]
Further, in claim 4, comprising a thermally insulating box housing the article therein becomes filled with a heat insulating material between the inner box and the outer box, the article cooled by cutting the outer box on the upper surface of the insulating box In the cool box in which the accumulator covered with the heat insulating material is arranged with the component parts of the apparatus, the heat insulating material of the heat insulating box and the heat insulating material of the accumulator are integrally formed. Thereby, there is no condensation between the heat insulating material of the heat insulating box and the heat insulating material of the accumulator. Moreover, the heat insulating material of an accumulator is manufactured collectively at the time of manufacture of the heat insulating material of a heat insulation box.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 show a first embodiment of the cool box of the present invention, FIG. 1 is an overall perspective view of the cool box, FIG. 2 is a side sectional view of the cool box, and FIG. 3 is a partial side view of the cool box. It is sectional drawing.
[0011]
The cool box body 1 includes a heat insulating box 2 that opens the front and forms an article storage chamber 1a therein, a front door 1b that opens and closes the front of the heat insulating box 2, and a cooling device 3 that cools the article storage chamber 1a. And a machine room 4 provided above the heat insulation box 2.
[0012]
The heat insulating box 2 is a box formed by filling a heat insulating material 2c between the inner box 2a and the outer box 2b. The upper inner box 2a and the outer box 2b are respectively a machine room 4 and an article storage room 1a. An inner surface plate 2d and an outer surface plate 2e are formed. The heat insulating material 2c has a recess 2f on the outer surface plate 2e side, and the outer surface plate 2e has a notch 2g at a site corresponding to the recess 2f. The recess 2f is provided with a flexible vinyl sheet 2h that covers the surface of the recess 2f and whose peripheral edge is located on the surface of the outer plate 2e on the machine chamber 4 side.
[0013]
The cooling device 3 includes a compressor 5, a condenser 6, a condenser fan 7, an expansion valve (not shown), an evaporator 8, and an accumulator 9, and heat between the evaporator 8 and air in the article storage chamber 1 a. The inside of the article storage chamber 1a is cooled by replacement.
[0014]
In the machine room 4, a compressor 5, a condenser 6, a condenser fan 7, and an accumulator 9 are disposed and fixed to the heat insulating box 2.
[0015]
As shown in FIG. 3, the accumulator 9 is composed of an accumulator main body 9a, a pair of refrigerant pipes 9b, and a heat insulating material 9c, and is fixed to the recess 2f of the heat insulating material 2c through the notch 2g of the outer surface plate 2e. . Refrigerant pipes 9b serving as refrigerant inlets and outlets are connected to the upper surface of the cylindrical accumulator body 9a, and the outside of the accumulator body 9a is covered with a heat insulating material 9c. Here, the recess 2f is formed so as to be in close contact with the lower surface of the heat insulating material 9c, and the sealing member 10 for maintaining airtightness is provided between the outer surface of the heat insulating material 9c and the inner surface of the recess 2f and the notch 2g. In this case, the lower surface of the accumulator main body 9a is fixed to the recess 2f of the heat insulating material 2c so that the lower surface of the accumulator main body 9a is at the same height as the outer surface plate 2e.
[0016]
Next, the manufacturing method of the heat insulation box 2 used for the cool box of 1st Embodiment and the installation method of the accumulator 9 are demonstrated. FIGS. 3 to 6 show a method for manufacturing a heat insulation box used in the cool box according to the first embodiment and a method for installing an accumulator. FIGS. 4 to 6 are enlarged front sectional views of the heat insulation box and the jig.
[0017]
First, an inner box 2a, an outer box 2b having a notch 2g on the outer surface plate 2e, a flexible vinyl sheet 2h, and a jig 11 having a protrusion 11a having the same size as the notch 2g are prepared.
[0018]
Next, as shown in FIG. 4, the outer surface plate 2e and the inner surface plate 2d are arranged at a predetermined distance, and the vinyl sheet 2h is fixed to the outer surface plate 2e so as to cover the notch 2g. And the jig | tool 11 is installed in the outer surface board 2e so that the convex part 11a may become the inner surface board 2d side of the notch 2g. Here, since the vinyl sheet 2h has flexibility, the central part moves to the inner surface plate 2d side while contacting the surface of the convex part 11a. Next, as shown in FIG. 5, a heat insulating material 2c is filled between the outer surface plate 2e and the inner surface plate 2d. Here, since the vinyl sheet 2h has flexibility, it is deformed along the surface of the convex portion 11a of the jig 11 by the pressure from the heat insulating material 2c. Next, as shown in FIG. 6, after filling the heat insulating material 2c, the jig 11 is moved to the outside of the heat insulating material 2c and pulled out from the notch 2g. Thereby, the heat insulation box 2 having the recess 2f is formed. Thereafter, as shown in FIG. 3, the accumulator 9 is accommodated in the recess 2f, the seal member 10 is embedded between the peripheral side surface of the accumulator 9 and the inner surface of the recess 2f, and the accumulator 9 is inserted into the recess 2f. To fix.
[0019]
Thus, according to the cool box of the present embodiment, in the recess 2f of the heat insulating box 2, the accumulator 9 is not installed via the metal (highly heat conductive material) mounting base as in the past. Since the accumulator 9 is installed through the vinyl sheet 2h having low heat property, the influence of the cold in the heat insulating box 2 is small, and the occurrence of condensation in the recess 2f can be suppressed. In addition, even if condensation occurs in the recess 2f, the vinyl sheet 2h is watertight, so this condensed water is not absorbed by the heat insulating material 2c. As a result, the heat insulating function of the heat insulating box 2 is achieved. Will not drop. Furthermore, since this vinyl sheet 2h has flexibility, when the recess 2f is formed, the vinyl sheet 2h is brought into close contact with the convex portion 11a of the jig 11 to form the recess 2f that fits the outer shape of the accumulator 9. it can.
[0020]
Further, since the airtight seal member 10 is embedded between the inner peripheral surface of the recess 2f and the outer peripheral surface of the accumulator 9, ingress of air as well as water from the outside is restricted. Accordingly, not only water does not accumulate in the recess 2f but also condensation does not occur in the recess 2f. Further, the seal member 10 also serves as a fixing means for the accumulator 9, so that a conventional fixing bracket or screw for the accumulator is not required.
[0021]
In addition, in this embodiment, although what showed the sealing member 10 for an airtight maintenance between the outer surface of the heat insulating material 9c of the accumulator 9, the inner surface of the recess 2f, and the notch 2g was shown, FIG. As shown, the seal member 10 may not be provided.
[0022]
FIG. 8 is a partial side cross-sectional view of the cool box showing a second embodiment of the cool box according to the present invention. The structure of the heat insulating box and the shape of the heat insulating material of the accumulator are different from those of the first example. Hereinafter, the heat insulating box and the heat insulating material of the accumulator in the cool box according to the second embodiment will be described using the same reference numerals as those in the first embodiment.
[0023]
That is, in this cool box, the heat insulating box 2 is a box formed by filling the heat insulating material 2c between the inner box 2a and the outer box 2b, and the upper inner box 2a and the outer box 2b are respectively machined. An inner surface plate 2d and an outer surface plate 2e are formed to partition the chamber 4 and the article storage chamber 1a. Here, the outer surface plate 2e has a notch 2g, and the heat insulating material 2c protrudes from the notch 2g. The heat insulating material 2c has a recess 2f with a bottom portion coinciding with the height of the outer surface plate 2e at the protruding portion, and the accumulator body 9a is disposed so that the side surface and the bottom surface are covered with the recess 2f. The upper part of the accumulator main body 9a is covered with a heat insulating material 9c, and the inner upper part of the recess 2f is closed by the heat insulating material 9c. Further, a sealing member 10 for airtightness is embedded between the heat insulating material 2c and the heat insulating material 9c, and covers the surface of the protruding portion of the heat insulating material 2c, and the peripheral edge is located between the outer surface plate 2e and the heat insulating material 2c. A flexible vinyl sheet 2h is provided.
[0024]
Next, the manufacturing method of the heat insulation box 2 used for the cool box of 2nd Embodiment and the installation method of the accumulator 9 are demonstrated. FIGS. 8 to 11 show a method for manufacturing a heat insulating box and a method for installing an accumulator used in the cool box according to the second embodiment. FIGS. 9 to 11 are enlarged front sectional views of the heat insulating box and the jig.
[0025]
First, an inner box 2a, an outer box 2b having a notch 2g on the outer surface plate 2e, a flexible vinyl sheet 2h, and an annular groove whose outer edge portion is the same type as the notch 2g have an inner edge portion of this groove. Thus, the jig 11 forming the convex portion 11a is prepared.
[0026]
Next, as shown in FIG. 9, the outer surface plate 2e and the inner surface plate 2d are arranged at a predetermined distance, and the vinyl sheet 2h is fixed to the outer surface plate 2e so as to cover the notch 2g. And the jig | tool 11 is installed in the outer surface board 2e so that the convex part 11a may become the inner surface board 2d side of the notch 2g. Here, since the vinyl sheet 2h has flexibility, the central part moves to the inner surface plate 2d side while contacting the surface of the convex part 11a. Next, as shown in FIG. 10, a heat insulating material 2c is filled between the outer surface plate 2e and the inner surface plate 2d. Here, since the vinyl sheet 2h has flexibility, it is deformed along the convex portions 11a of the jig 11 and the surface of the groove by the pressure from the heat insulating material 2c. Next, as shown in FIG. 11, after filling the heat insulating material 2c, the jig 11 is moved to the outside of the heat insulating material 2c and pulled out from the heat insulating material 2c. Thereby, the heat insulation box 2 which has the recess 2f in the protruded part is formed. Thereafter, as shown in FIG. 8, the accumulator 9 is accommodated in the recess 2f, and the seal member 10 is embedded between the peripheral side surface of the heat insulating material 9c of the accumulator 9 and the inner side surface of the recess 2f. Is fixed to the recess 2f.
[0027]
Thus, according to the cool box of the present embodiment, the heat insulating material 2c and the accumulator 9 of the heat insulating box 2 are installed without installing the accumulator 9 via a metal (high heat transfer material) mounting base as in the past. Since the heat insulating materials on the side surface and the bottom surface are integrally formed, condensation does not occur between the heat insulating material 2c of the heat insulating box 2 and the heat insulating material of the accumulator as in the prior art, and the heat insulating material 2c absorbs this dew condensation. Thus, the heat insulating function of the heat insulating box 2 is not deteriorated. Further, the heat insulating material 2c serves as a fixing means for the accumulator 9, so that a conventional fixing bracket or screw for the accumulator becomes unnecessary.
[0028]
Further, even if condensation occurs on the surface of the heat insulating material 2c, the heat insulating material 2c is covered with the water-tight vinyl sheet 2h, so this condensed water is not absorbed by the heat insulating material 2c. The heat insulation function of the heat insulation box 2 does not deteriorate. Furthermore, since this vinyl sheet 2h has flexibility, when the recess 2f is formed, the vinyl sheet 2h comes into close contact with the convex portion 11a and the groove of the jig 11, and the recess 2f conforms to the outer shape of the accumulator 9. Can be formed.
[0029]
In the present embodiment, the sealing member 10 is provided only between the heat insulating material 2c and the heat insulating material 9c. However, a sealing member may be provided between the outer surface plate 2e and the heat insulating material 2c. Good.
[0030]
Moreover, in this embodiment, although the heat insulation of the side surface and bottom surface side of the accumulator main body 9a is performed by the heat insulating material 2c of the heat insulating box 2, and the heat insulating material 9c of the accumulator 9 is performed by the heat insulating material 2c of the accumulator 9, 12, heat insulation on the bottom surface side of the accumulator main body 9 a may be performed by the heat insulating material 2 c of the heat insulating box 2, and heat insulation on the upper surface side and the side surface side may be performed by the heat insulating material 9 c of the accumulator 9.
[0031]
【The invention's effect】
As described above, according to the cool box of claim 1, since the watertight sheet has a low heat transfer property, dew condensation is suppressed, and even if dew condensation occurs, the dew condensation water is insulated from the recess. Since it did not enter inside, the heat insulating material of a heat insulation box does not absorb condensed water, and the heat insulation function of a heat insulation box does not fall.
[0032]
Moreover, according to the cool box of claim 2, in addition to the effect of claim 1, the watertight sheet is deformed in accordance with the recess of the heat insulation box and the shape of the heat insulating material of the accumulator, so the recess is formed. In this case, a recess adapted to the outer shape of the accumulator can be formed.
[0033]
In addition to the effect of claim 1 or 2, in addition to the effect of claim 1 or 2, the ingress of water and air from the outside of the heat insulation box is regulated, so that water does not accumulate in the recess. Naturally, the occurrence of condensation in the recess can be prevented, and the heat insulation function of the heat insulation box can be prevented from being lowered due to the heat insulating material of the heat insulation box absorbing the condensed water.
[0034]
Further, according to the cool box of claim 4, since no condensation is formed between the heat insulating material of the heat insulating box and the heat insulating material of the accumulator, the heat insulating material absorbs the dew condensation water to insulate the heat insulating box. The function is not degraded.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a cold box showing a first embodiment of the present invention. FIG. 2 is a side sectional view of the cold box. FIG. 3 is a partial side sectional view of the cold box. FIG. 5 is a partial side sectional view of a jig and a heat insulation box. FIG. 6 is a partial side sectional view of a jig and a heat insulation box. FIG. 8 is a partial side cross-sectional view of a cold storage showing a second embodiment of the present invention. FIG. 9 is a jig and a heat insulation box showing a manufacturing method of a heat insulation box of the second embodiment. FIG. 10 is a partial side sectional view of the jig and the heat insulation box. FIG. 11 is a partial side sectional view of the jig and the heat insulation box. FIG. 12 is a partial side sectional view of the cool box.
DESCRIPTION OF SYMBOLS 1 ... Cold storage main body, 2 ... Heat insulation box, 2c ... Heat insulation material, 2f ... Recess, 2h ... Vinyl sheet, 9a ... Accumulator main body, 9c ... Heat insulation material, 10 ... Sealing member.

Claims

And it has a heat insulating box for accommodating articles therein will be filled with a heat insulating material between the inner box and the outer box to form a recess by notching the outer box on the upper surface of the heat insulating box, the recess In the cool box where the accumulator covered with the heat insulating material with the component parts of the article cooling device is arranged,
A cool box having a water-tight sheet having low heat conductivity fixed to the surface of the recess.

The cool box according to claim 1, wherein the watertight sheet is formed of a flexible member such as a resin.

The cold storage according to claim 1 or 2, wherein a sealing member for maintaining airtightness is embedded between an outer surface of the accumulator and an inner surface of the recess, and the accumulator is fixed to the recess.

Has a heat insulating box for accommodating articles therein will be filled with a heat insulating material between the inner box and the outer box, the heat insulating material in the components of the article cooling system by cutting the outer box on the upper surface of the insulating box In the cold storage with the accumulator covered with
The cold insulator, wherein the heat insulating material of the heat insulating box and the heat insulating material of the accumulator are integrally formed.