JP2023120712A - Cold storage - Google Patents

Cold storage Download PDF

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JP2023120712A
JP2023120712A JP2022023716A JP2022023716A JP2023120712A JP 2023120712 A JP2023120712 A JP 2023120712A JP 2022023716 A JP2022023716 A JP 2022023716A JP 2022023716 A JP2022023716 A JP 2022023716A JP 2023120712 A JP2023120712 A JP 2023120712A
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heat transfer
container
inner lid
heat
cold
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峰幸 井上
Mineyuki Inoue
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Twinbird Corp
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Twinbird Corp
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Abstract

To provide a cold storage container that improves cold storage performance and makes it possible to securely bring in and bring out contents.SOLUTION: A cold storage 1 has a cold storage container 2 that has an opening part 5, an inner lid 3 that closes the opening part 5 of the cold storage container 2, and an outer lid 4 that closes the opening part 5 so as to cover this inner lid 3. A heat transfer layer 28 is provided on the surface of the inner lid 3. A heater 18 is provided on the cold storage container 2 and/or the outer lid 4 as a heating source. A heat transfer relationship is formed between the heater 18 and the heat transfer layer 28 so that heat generated by the heater 18 is provided with the heat transfer layer 28 of the inner lid 3, thereby freezing between the opening part 5 of the cold storage container 2 and the peripheral part of the inner lid 3 is prevented or the ice generated between the two parts is melted. This can make it possible to securely attach or remove the inner lid 3.SELECTED DRAWING: Figure 7

Description

本発明は、庫内を低温に保つ保冷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 that keeps the inside of the refrigerator at a low temperature.

従来、この種の保冷庫としては、上方が開口した収容室（本願発明の容器本体に相当する）と、この収容室の開口部を開閉する蓋体（本願発明の外蓋に相当する）とを有する保冷庫が知られている（例えば、特許文献１参照。）。なお、このような保冷庫において、断熱性を有する内蓋で前記開口部を覆い、この内蓋の外側を前記外蓋で覆うことも行われていた。このように構成することにより、前記保冷庫からの冷熱の漏れを抑えて、保冷性能を向上させることができる。 Conventionally, this type of cold storage includes a storage chamber with an upper opening (corresponding to the container body of the present invention) and a lid that opens and closes the opening of the storage chamber (corresponding to the outer lid of the present invention). is known (see, for example, Patent Document 1). Incidentally, in such a cold storage box, the opening is covered with an inner cover having a heat insulating property, and the outside of the inner cover is covered with the outer cover. By configuring in this way, it is possible to suppress the leakage of cold heat from the cold storage box and improve the cold insulation performance.

特開２００６－９０６５４号公報JP-A-2006-90654

しかしながら、このような保冷庫は、前記外蓋の開閉等により、収容空間に外気が入り込み、この外気に含まれる水分が前記保冷容器の開口部と前記内蓋の外周部との間で凍結し、前記内蓋が前記開口部から取り外せなくなる虞があった。 However, in such a cold storage box, when the outer cover is opened and closed, outside air enters the accommodation space, and moisture contained in the outside air freezes between the opening of the cold insulating container and the outer peripheral portion of the inner cover. , there is a possibility that the inner cover cannot be removed from the opening.

本発明は以上の問題点を解決し、保冷性能を向上させると共に内容物を確実に出し入れすることができる保冷庫を提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems and to provide a cold-storage box with improved cold-storage performance and with which contents can be reliably put in and taken out.

本発明の請求項１に記載の保冷庫は、開口部を有する保冷容器と、この保冷容器の開口部を塞ぐ内蓋と、この内蓋を覆うように前記開口部を塞ぐ外蓋とを有する保冷庫において、前記内蓋の表面に伝熱層が設けられ、前記保冷容器及び／又は前記外蓋に加熱源が設けられると共に、この加熱源と前記伝熱層とが伝熱関係とされるものである。 A cold storage container according to claim 1 of the present invention has a cold storage container having an opening, an inner lid closing the opening of the cold insulation container, and an outer lid closing the opening so as to cover the inner lid. In the refrigerator, a heat transfer layer is provided on the surface of the inner lid, a heat source is provided on the cold storage container and/or the outer lid, and the heat source and the heat transfer layer are in a heat transfer relationship. It is.

また、本発明の請求項２に記載の保冷庫は、請求項１において、前記伝熱層が、前記内蓋における前記保冷容器との接触部位に設けられるものである。 According to claim 2 of the present invention, there is provided a cold storage according to claim 1, wherein the heat transfer layer is provided at a portion of the inner lid that contacts the cold insulation container.

また、本発明の請求項３に記載の保冷庫は、請求項１において、前記内蓋の外周部にフランジ部が設けられ、このフランジ部に伝熱層が設けられ、前記フランジ部が前記保冷容器と外蓋とによって挟持されるものである。 Further, according to claim 3 of the present invention, in the cold storage box according to claim 1, a flange portion is provided on the outer peripheral portion of the inner lid, a heat transfer layer is provided on the flange portion, and the flange portion is connected to the cold insulating container. It is sandwiched between the container and the outer lid.

更に、本発明の請求項４に記載の保冷庫は、請求項３において、前記フランジ部の外周部を露出させないように、前記保冷容器及び／又は外蓋に囲い部が設けられるものである。 Further, according to claim 4 of the present invention, there is provided a cold storage according to claim 3, wherein the cold insulation container and/or the outer lid are provided with an enclosing part so as not to expose the outer peripheral part of the flange part.

本発明の請求項１に記載の保冷庫は、以上のように構成することにより、前記加熱源が発生させる熱を前記内蓋の伝熱層に与えることで、前記保冷容器の開口部と前記内蓋の外周部との間での凍結を防止するか又はこれらの間で生じた氷を融解させ、前記内蓋の前記保冷容器に対する着脱を確実に行わせることができる。 In the cold storage container according to claim 1 of the present invention, the heat generated by the heating source is applied to the heat transfer layer of the inner lid by being configured as described above. It is possible to prevent freezing with the outer peripheral part of the inner lid or melt ice generated therebetween, and to securely attach and detach the inner lid to the cold insulation container.

なお、前記伝熱層を、前記内蓋における前記保冷容器との接触部位に設けることにより、前記加熱源が発生させる熱を前記内蓋の伝熱層に伝導させて、前記保冷容器の開口部と前記内蓋の外周部との間での凍結を防止するか又はこれらの間で生じた氷を融解させ、前記内蓋の前記保冷容器に対する着脱を確実に行わせることができる。 By providing the heat transfer layer at a portion of the inner lid that contacts the cold insulation container, the heat generated by the heating source is conducted to the heat transfer layer of the inner lid, and the opening of the cold insulation container is and the outer peripheral portion of the inner lid, or melt the ice formed therebetween, so that the inner lid can be reliably attached to and detached from the cold insulating container.

また、前記内蓋の外周部にフランジ部を設け、このフランジ部に伝熱層を設け、前記フランジ部を前記保冷容器と外蓋とで挟持することにより、前記伝熱層及び加熱源を前記保冷容器の収容空間から離れた位置にして、収容空間内の温度上昇を最小限にすると共に、前記伝熱層と加熱源とを接触させ続けることができる。 In addition, a flange portion is provided on the outer peripheral portion of the inner lid, a heat transfer layer is provided on the flange portion, and the flange portion is sandwiched between the cold insulating container and the outer lid, so that the heat transfer layer and the heat source are arranged as described above. It is possible to keep the heat transfer layer and the heat source in contact with each other while minimizing the temperature rise in the storage space by setting the position apart from the storage space of the cold insulation container.

更に、前記フランジ部の外周部を露出させないように、前記保冷容器及び／又は外蓋に囲い部を設けることにより、外気の熱により伝熱層の温度を上昇させすぎないようにすることができるばかりでなく、伝熱層の熱が外気に放出されないようにして、効率的に前記保冷容器の開口部と前記内蓋との間での凍結を防止するか又はこれらの間で生じた氷を融解させ、前記内蓋の前記保冷容器に対する着脱を確実に行わせることができる。 Further, by providing an enclosure on the cold insulating container and/or the outer lid so as not to expose the outer peripheral portion of the flange portion, it is possible to prevent the temperature of the heat transfer layer from excessively increasing due to the heat of the outside air. In addition, the heat of the heat transfer layer is prevented from being released to the outside air, so as to effectively prevent freezing between the opening of the cold insulating container and the inner lid, or ice formed therebetween. By melting, the inner lid can be reliably attached to and detached from the cold insulation container.

本発明の一実施形態を示す保冷庫の構造の説明図である。1 is an explanatory diagram of a structure of a cold storage box showing an embodiment of the present invention; FIG. 同、製造工程を順に示す説明図であり、内容器に支持部を取り付けた状態を示すものである。Similarly, it is explanatory drawing which shows a manufacturing process in order, and shows the state which attached the support part to the inner container. 同、製造工程を順に示す説明図であり、図２にサーモサイフォン及び凝縮器を取り付けた状態を示すものである。It is explanatory drawing which shows a manufacturing process in order same, and shows the state which attached the thermosyphon and the condenser to FIG. 同、製造工程を順に示す説明図であり、図３を断熱材ケーシングに収容した状態を示すものである。It is explanatory drawing which shows a manufacturing process in order similarly, and shows the state which accommodated FIG. 3 in the heat insulating material casing. 同、製造工程を順に示す説明図であり、図４の断熱材ケーシングに断熱材を充填した状態を示すものである。5A and 5B are explanatory diagrams showing the manufacturing steps in order, showing a state in which the insulating material casing shown in FIG. 4 is filled with the insulating material. 同、製造工程を順に示す説明図であり、図５にスターリング冷凍機を取り付けた状態を示すものである。It is explanatory drawing which shows a manufacturing process in order same, and shows the state which attached the Stirling refrigerator to FIG. 同、図１における破線の円で囲んだ部分の拡大図である。FIG. 2 is an enlarged view of a portion surrounded by a broken-line circle in FIG. 1;

以下、本発明の実施形態について、図１乃至図７に基づいて説明する。１は保冷庫である。この保冷庫１は、保冷容器２と、内蓋３と、外蓋４とを有して構成される。そして、前記保冷容器２は、上方に開口部５を有する保冷区画部６と、機関部７とを有して構成される。 An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. FIG. 1 is a cold storage. The cold storage box 1 includes a cold storage container 2 , an inner lid 3 and an outer lid 4 . The cold insulation container 2 includes a cold insulation compartment 6 having an opening 5 at the top, and an engine section 7 .

前記保冷区画部６は、容器８と、この容器８の外側に設けられる外殻体９と、冷却配管としてのサーモサイフォン１０と、このサーモサイフォン１０における最高位近傍に伝熱的に設けられる、アルミニウムや銅等の熱良導性金属からなる接続部としての伝熱ブロック１１と、この伝熱ブロック１１が前記容器８に対して所定の位置となるように前記伝熱ブロック１１を支持するための支持部１２と、前記容器８と外殻体９との間に設けられる断熱部１３とを有して構成される。前記容器８は側面部８Ｗと底部８Ｂを有し、少なくとも側面部８Ｗがアルミニウム等の熱良導性金属によって構成される。なお、前記容器８全体をアルミニウム等で構成してもよい。一方、前記外殻体９は、熱伝導率の低い合成樹脂等によって構成される。そして、前記サーモサイフォン１０の蒸発部１０Ｖは、前記容器８の側面部８Ｗの庫外側に伝熱的に接続される。また、前記外殻体９には、前記機関部７側に突出する突出部１４が形成される。この突出部１４内には、前記伝熱ブロック１１と、前記支持部１２と、前記サーモサイフォン１０における蒸発部１０Ｖを除く部分が収容される。なお、前述したように、前記サーモサイフォン１０における最高位近傍に前記伝熱ブロック１１が接続されることで、前記サーモサイフォン１０の最高位近傍が凝縮部１０Ｃとなる。また、前記突出部１４には、上端開口部１５Ｕと下端開口部１５Ｄとを有する筒状部１５が形成され、この筒状部１５の上端開口部１５Ｕが前記伝熱ブロック１１によって塞がれる。即ち、この伝熱ブロック１１の下面が前記筒状部１５内に露出する。更に、前記突出部１４を含む外殻体９と前記容器８との間には、単一の前記断熱部１３が設けられる。即ち、前記容器８とサーモサイフォン１０と伝熱ブロック１１と支持部１２は、単一の前記断熱部１３によって覆われる。一方、前記筒状部１５の上端開口部１５Ｕが前記伝熱ブロック１１によって塞がれることで、前記伝熱ブロック１１の下面が前記断熱部１３の非形成部１６となる。 The cold insulation compartment 6 includes a container 8, an outer shell 9 provided on the outside of the container 8, a thermosiphon 10 as a cooling pipe, and a thermosiphon 10 provided near the highest position in a heat-conducting manner. A heat transfer block 11 as a connecting part made of a metal with good thermal conductivity such as aluminum or copper, and for supporting the heat transfer block 11 so that the heat transfer block 11 is at a predetermined position with respect to the container 8. and a heat insulating portion 13 provided between the container 8 and the outer shell 9 . The container 8 has a side portion 8W and a bottom portion 8B, and at least the side portion 8W is made of metal with good thermal conductivity such as aluminum. Note that the entire container 8 may be made of aluminum or the like. On the other hand, the outer shell 9 is made of synthetic resin or the like having low thermal conductivity. The evaporating portion 10V of the thermosiphon 10 is connected to the outer side of the side portion 8W of the container 8 in a heat-conducting manner. Further, the outer shell body 9 is formed with a protruding portion 14 protruding toward the engine portion 7 side. The projecting portion 14 accommodates the heat transfer block 11, the support portion 12, and a portion of the thermosiphon 10 excluding the evaporating portion 10V. As described above, by connecting the heat transfer block 11 to the vicinity of the highest level of the thermosiphon 10, the vicinity of the highest level of the thermosiphon 10 becomes the condensing section 10C. A cylindrical portion 15 having an upper end opening 15U and a lower end opening 15D is formed in the projecting portion 14, and the upper end opening 15U of the cylindrical portion 15 is closed by the heat transfer block 11. That is, the lower surface of the heat transfer block 11 is exposed inside the tubular portion 15 . Furthermore, the single heat insulating portion 13 is provided between the outer shell 9 including the projecting portion 14 and the container 8 . That is, the container 8 , the thermosiphon 10 , the heat transfer block 11 and the support portion 12 are covered with the single heat insulating portion 13 . On the other hand, since the upper end opening 15U of the cylindrical portion 15 is closed by the heat transfer block 11 , the lower surface of the heat transfer block 11 becomes the non-formation portion 16 of the heat insulating portion 13 .

前記外殻体９には、前記開口部５を囲むように、前記外蓋４の下面と対向する上面部１７が設けられる。この上面部１７は、前記外殻体９の一部により構成される。そして、図７に示すように、前記上面部１７の中央よりもやや庫外側寄りに、加熱源としてのヒータ１８が設けられる。このヒータ１８は、前記上面部１７の略全周に亘って設けられる。更に、前記上面部１７の外縁部には、前記機関部７に沿う部分を除いて、上方に突出した囲い部１９が形成される。この囲い部１９の高さは一定であり、前記開口部５を前記外蓋４で閉じた際に、この外蓋４との間に僅かな間隙を生じる程度の高さに形成される。 The outer shell body 9 is provided with an upper surface portion 17 facing the lower surface of the outer lid 4 so as to surround the opening portion 5 . The upper surface portion 17 is configured by part of the outer shell body 9 . Then, as shown in FIG. 7, a heater 18 as a heat source is provided slightly outside the center of the upper surface portion 17 . This heater 18 is provided over substantially the entire circumference of the upper surface portion 17 . Furthermore, an enclosing portion 19 protruding upward is formed on the outer edge portion of the upper surface portion 17 except for the portion along the engine portion 7 . The height of the surrounding portion 19 is constant, and is formed to such a height that a slight gap is formed between the surrounding portion 19 and the outer lid 4 when the opening portion 5 is closed with the outer lid 4 .

前記機関部７は、前記保冷区画部６の側方に設けられる。また、前述したように、前記機関部７の外殻体２０内には、前記保冷区画部６の一部である前記突出部１４が位置する。更に、前記機関部７の外殻体２０内には、冷凍機としてのスターリング冷凍機２１が設けられる。このスターリング冷凍機２１は、吸熱部２２と排熱部２３とを有する。そして、前記スターリング冷凍機２０の吸熱部２２に、アルミニウムや銅等の熱良導性金属からなる連結ブロック２４が取り付けられると共に、この連結ブロック２４の前記排熱部２３側に、断熱栓２５が設けられる。この断熱栓２５は、発泡ゴム等の弾性変形可能な発泡性材料により形成されると共に、その外寸が前記筒状部１５の内寸よりもやや大きく形成される。 The engine section 7 is provided on the side of the cold insulation compartment 6 . Further, as described above, the projecting portion 14 that is a part of the cold insulation compartment 6 is positioned inside the outer shell 20 of the engine portion 7 . Further, a Stirling refrigerator 21 as a refrigerator is provided inside the outer shell 20 of the engine section 7 . This Stirling refrigerator 21 has a heat absorbing section 22 and a heat discharging section 23 . A connecting block 24 made of a metal having good thermal conductivity such as aluminum or copper is attached to the heat absorbing portion 22 of the Stirling refrigerator 20, and a heat insulating plug 25 is attached to the connecting block 24 on the side of the heat discharging portion 23. be provided. The heat insulating plug 25 is made of an elastically deformable foam material such as foam rubber, and its outer dimension is slightly larger than the inner dimension of the tubular portion 15 .

前記スターリング冷凍機２０の吸熱部２２に設けられた連結ブロック２４は、前記下端開口部１５Ｄから前記筒状部１５に挿入され、その上面が前記伝熱ブロック１１の下面、即ち前記非形成部１６に伝熱的に接触する。即ち、前記スターリング冷凍機２０の吸熱部２２は、前記連結ブロック２４を介して前記非形成部１６に伝熱的に接触する。また、前記断熱栓２５は、前記筒状部１５の下端開口部１５Ｄから前記筒状部１５内に挿入され、その内面に圧接状態で当接する。これによって、前記筒状部１５が前記断熱栓２５によって隙間なく塞がれることになり、前記非形成部１６を外部に露出させないようにすることができる。 A connecting block 24 provided in the heat absorbing portion 22 of the Stirling refrigerator 20 is inserted into the cylindrical portion 15 from the lower end opening 15D, and its upper surface is the lower surface of the heat transfer block 11, that is, the non-forming portion 16. in thermal contact with That is, the heat absorbing portion 22 of the Stirling refrigerator 20 is in thermal contact with the non-forming portion 16 through the connecting block 24 . Further, the heat insulating plug 25 is inserted into the tubular portion 15 from the lower end opening 15D of the tubular portion 15, and abuts against the inner surface of the tubular portion 15 in a press-contact state. As a result, the cylindrical portion 15 is tightly closed by the heat insulating plug 25, and the non-forming portion 16 can be prevented from being exposed to the outside.

前記内蓋３は、前記開口部５に挿入されると共に断熱性を有する内蓋本体２６と、この内蓋本体２６の外周部から側方に突出して設けられるフランジ部２７とを有する。そして、前記内蓋本体２６の外周面から前記フランジ部２７の底面にかけて、伝熱層２８が環状に設けられる。この伝熱層２８は、アルミニウム等の熱良導性金属によって形成される。前記内蓋本体２６は、前記開口部５と略同形状に形成される。そして、前記伝熱層２８を含む前記内蓋本体２６の外寸は、前記開口部５の内寸よりも僅かに小さく形成される。従って、前記内蓋本体２６は、前記容器８の側面部８Ｗの上部との間に僅かな空隙を有した状態で、前記開口部５内に挿入される。また、前記フランジ部２７は、前記上面部１７と略同形状で且つその外寸が前記囲い部１９の内寸よりも僅かに小さく形成される。また、前記フランジ部２７は、その下面に設けられた前記伝熱層２８が前記ヒータ１８と当接する程度の外寸を有する。更に、前記フランジ部２７は、前記開口部５を前記外蓋４で閉じた際に、この外蓋４と前記ヒータ１８とで挟持される程度の厚さに形成される。即ち、前記開口部５を前記外蓋４で閉じることで、前記伝熱層２８は前記ヒータ１８に密着し、伝熱的に接続されることになる。なお、前記伝熱層２８の内端は、前記内蓋３における前記内蓋本体２６の外周面、即ち前記容器８の側面部８Ｗの上部と僅かな空隙を隔てて対向する部分であり、前記内蓋本体２６の下面までは延びていない。 The inner lid 3 has an inner lid main body 26 which is inserted into the opening 5 and has heat insulating properties, and a flange portion 27 which protrudes laterally from the outer peripheral portion of the inner lid main body 26 . A heat transfer layer 28 is annularly provided from the outer peripheral surface of the inner lid main body 26 to the bottom surface of the flange portion 27 . The heat transfer layer 28 is made of a metal with good thermal conductivity such as aluminum. The inner lid main body 26 is formed in substantially the same shape as the opening 5 . The outer size of the inner lid main body 26 including the heat transfer layer 28 is slightly smaller than the inner size of the opening 5 . Therefore, the inner lid main body 26 is inserted into the opening 5 with a slight gap between it and the upper portion of the side surface 8W of the container 8. As shown in FIG. The flange portion 27 has substantially the same shape as the upper surface portion 17 and has an outer dimension slightly smaller than the inner dimension of the enclosing portion 19 . Further, the flange portion 27 has an outer dimension such that the heat transfer layer 28 provided on the lower surface of the flange portion 27 contacts the heater 18 . Furthermore, the flange portion 27 is formed to have a thickness such that it is sandwiched between the outer lid 4 and the heater 18 when the opening 5 is closed with the outer lid 4 . That is, by closing the opening 5 with the outer cover 4, the heat transfer layer 28 is brought into close contact with the heater 18, and is thermally connected. The inner end of the heat transfer layer 28 is a portion facing the outer peripheral surface of the inner lid main body 26 of the inner lid 3, that is, the upper portion of the side surface portion 8W of the container 8 with a slight gap therebetween. It does not extend to the bottom surface of the inner lid main body 26 .

更に、前記外蓋４は、断熱性を有すると共に、前記保冷容器２の外殻体９に対し、図示しないヒンジ機構によって開閉可能に枢支される。 Further, the outer lid 4 has heat insulating properties and is pivotally supported on the outer shell 9 of the cold insulating container 2 by a hinge mechanism (not shown) so as to be openable and closable.

次に、製造工程について説明する。まず、図２に示すように、前記容器８の側面部８Ｗの庫外側に、前記支持部１２を取り付ける。 Next, the manufacturing process will be described. First, as shown in FIG. 2, the support portion 12 is attached to the outer side of the side portion 8W of the container 8. As shown in FIG.

そして、図３に示すように、この支持部１２に前記伝熱ブロック１１を取り付けると共に、この伝熱ブロック１１に接続されるサーモサイフォン１０の蒸発部１０Ｖを、前記容器８の側面部８Ｗの庫外側に伝熱的に接続する。このように、前記支持部１２に伝熱ブロック１１を取り付けることで、前記容器８と伝熱ブロック１１との位置関係が固定されると共に、前記サーモサイフォン１０の前記容器８に対する傾斜角度も一定に保つことができる。 Then, as shown in FIG. 3, the heat transfer block 11 is attached to the support portion 12, and the evaporation portion 10V of the thermosiphon 10 connected to the heat transfer block 11 is connected to the side portion 8W of the container 8. Thermally connect to the outside. By attaching the heat transfer block 11 to the support portion 12 in this manner, the positional relationship between the container 8 and the heat transfer block 11 is fixed, and the angle of inclination of the thermosiphon 10 with respect to the container 8 is kept constant. can keep.

次に、図４に示すように、図３の状態の組立体を、前記外殻体９に収容する。この際、前記サーモサイフォン１０の凝縮部１０Ｃ、前記伝熱ブロック１１、及び前記支持部１２は、前記突出部１４内に位置する。また、前記伝熱ブロック１１は、前記突出部１４に形成された前記筒状部１５の上端開口部１５Ｕを塞ぐ。 Next, as shown in FIG. 4, the assembly in the state shown in FIG. At this time, the condensing portion 10C of the thermosiphon 10, the heat transfer block 11, and the support portion 12 are positioned within the projecting portion . Further, the heat transfer block 11 closes the upper end opening 15U of the tubular portion 15 formed in the projecting portion 14 .

次に、図５に示すように、図４の状態の組立体に対し、前記容器８と外殻体９との間に前記断熱部１３を形成する。これは、前記容器８と外殻体９との間に発泡ポリウレタン等を注入することで行われる。この際、前記伝熱ブロック１１及びサーモサイフォン１０に発泡による圧力が加わるが、前述したように、前記支持部１２によって前記伝熱ブロック１１が支持されるので、先記伝熱ブロック１１の移動や前記サーモサイフォン１０の変形が抑えられる。なお、本例では、説明の簡略化のため、前記断熱部１３として発泡断熱部のみの説明としたが、例えば真空断熱パネルを組み合わせた構造であっても良い。このような場合であっても、前記非形成部１６を除いて、前記突出部１４を含む外殻体９と前記容器８との間の全体に、発泡体からなる単一の断熱部１３が形成されることになる。この場合、単一の断熱部１３に加えて真空断熱パネルが組み合わされると言い換えることができる。 Next, as shown in FIG. 5, the heat insulating portion 13 is formed between the container 8 and the outer shell 9 in the assembly shown in FIG. This is done by injecting foamed polyurethane or the like between the container 8 and the outer shell 9 . At this time, pressure due to foaming is applied to the heat transfer block 11 and the thermosiphon 10, but as described above, the heat transfer block 11 is supported by the support portion 12, so that the movement of the heat transfer block 11 and the movement of the heat transfer block 11 are prevented. Deformation of the thermosiphon 10 is suppressed. In this example, for the sake of simplification of explanation, only the foamed heat insulating portion was explained as the heat insulating portion 13, but for example, a structure in which vacuum heat insulating panels are combined may be used. Even in such a case, except for the non-formed portion 16, the single heat insulating portion 13 made of foam is provided entirely between the outer shell 9 including the projecting portion 14 and the container 8. will be formed. In this case, it can be said that the vacuum insulation panel is combined in addition to the single heat insulation part 13 .

更に、図６に示すように、前記下端開口部１５Ｄから、前記スターリング冷凍機２１の吸熱部２２に取り付けられた連結ブロック２４を、前記筒状部１５に挿入する。そして、前記連結ブロック２４の上面を、前記伝熱ブロック１１の下面、即ち前記非形成部１６に当接させ、これらを伝熱的に結合させることで、前記スターリング冷凍機２１を前記伝熱ブロック１１に固定する。また、前記スターリング冷凍機２１の吸熱部２２と前記筒状部１５の内面との間に形成される間隙を、前記断熱栓２５によって塞ぐ。 Further, as shown in FIG. 6, the connecting block 24 attached to the heat absorbing portion 22 of the Stirling refrigerator 21 is inserted into the tubular portion 15 through the lower end opening 15D. Then, the upper surface of the connecting block 24 is brought into contact with the lower surface of the heat transfer block 11, that is, the non-formed portion 16, and these are heat-conductively coupled, thereby connecting the Stirling refrigerator 21 to the heat transfer block. 11. Further, the gap formed between the heat absorbing portion 22 of the Stirling refrigerator 21 and the inner surface of the cylindrical portion 15 is closed by the heat insulating plug 25 .

そして、前記突出部１４及びスターリング冷凍機２１を前記機関部７の外殻体２０で覆い、前記上面部１７にヒータ１８を取り付け、前記外蓋４を前記外殻体９に枢支させ、前記内蓋３を前記開口部５に挿入し、前記外蓋４を閉じることで、図１に示す状態の前記保冷庫１が形成される。 Then, the projecting portion 14 and the Stirling refrigerator 21 are covered with the outer shell 20 of the engine portion 7, the heater 18 is attached to the upper surface portion 17, the outer lid 4 is pivotally supported on the outer shell 9, and the By inserting the inner lid 3 into the opening 5 and closing the outer lid 4, the cold storage box 1 in the state shown in FIG. 1 is formed.

このように、前記断熱部１３の非形成部１６を除いて、前記容器８の庫外側と、前記サーモサイフォン１０全体と、前記伝熱ブロック１１とが、単一の前記断熱部１３によって覆われることで、前記断熱部１３の継目を削減して、前記スターリング冷凍機２１が発生させた冷熱の漏れを最小限に抑えることができる。また、前記筒状部１５の内壁と前記断熱栓２５との間に継目が存在するが、前記断熱栓２５が前記筒状部１５の内壁に圧接することで両者の間に隙間が生じないので、この継目での冷熱の漏れを抑えることができる。これによって、前記容器８と内蓋３とで囲まれる収容空間内を効率的に冷却することができる。更に、前記支持部１２も前記断熱部１３によって覆われるので、前記支持部１２からの冷熱の漏れも削減することができる。 In this way, the outer side of the container 8, the entire thermosiphon 10, and the heat transfer block 11 are covered by the single heat insulating portion 13, except for the non-forming portion 16 of the heat insulating portion 13. By doing so, the number of joints of the heat insulating portion 13 can be reduced, and leakage of cold heat generated by the Stirling refrigerator 21 can be minimized. In addition, although there is a seam between the inner wall of the cylindrical portion 15 and the heat insulating plug 25, the heat insulating plug 25 is pressed against the inner wall of the cylindrical portion 15 so that no gap is formed between them. , the leakage of cold heat at this joint can be suppressed. As a result, the inside of the accommodation space surrounded by the container 8 and the inner lid 3 can be efficiently cooled. Furthermore, since the support portion 12 is also covered with the heat insulating portion 13, leakage of cold heat from the support portion 12 can be reduced.

次に、本実施形態の作用について説明する。まず、使用者は図示しない操作部を操作し、前記スターリング冷凍機２１を作動させる。これによって、前記スターリング冷凍機２１の吸熱部２２から排熱部２３に熱が流れる。即ち、前記吸熱部２２に冷熱が発生する。この冷熱によって、前記サーモサイフォン１０内の冷媒が冷却され、液化する。液化した冷媒は、重力によって前記サーモサイフォン１０内を下降し、蒸発部１０Ｖに至る。そして、前記冷媒は、前記蒸発部１０Ｖにて前記容器８内の熱を奪って気化し、前記サーモサイフォン１０内を上昇する。そして、この上昇した前記冷媒は、前記凝縮部１０Ｃにて再び熱を奪われ、液化する。これが繰り返されることで、前記容器８と内蓋３とで囲まれた空間が冷却される。なお、前述したように、前記容器８の庫外側全体と、前記サーモサイフォン１０全体と、前記伝熱ブロック１１の下面を除く部分と、前記支持部１２全体が、単一の前記断熱部１３によって覆われるので、前記スターリング冷凍機２１が発生させた冷熱が漏れる虞のある箇所を最小限とし、前記容器８と内蓋３とで囲まれる収容空間内を効率的に冷却することができる。 Next, the operation of this embodiment will be described. First, the user operates an operation unit (not shown) to operate the Stirling refrigerator 21 . As a result, heat flows from the heat absorbing portion 22 of the Stirling refrigerator 21 to the heat discharging portion 23 . That is, cold heat is generated in the heat absorbing portion 22 . This cold heat cools and liquefies the coolant in the thermosiphon 10 . The liquefied refrigerant descends inside the thermosiphon 10 by gravity and reaches the evaporator 10V. Then, the refrigerant takes heat from the container 8 in the evaporating section 10V, is vaporized, and rises in the thermosiphon 10. As shown in FIG. Then, the rising refrigerant is deprived of heat again in the condensation section 10C and liquefied. By repeating this, the space surrounded by the container 8 and the inner lid 3 is cooled. As described above, the entire outer side of the container 8, the entire thermosiphon 10, the portion excluding the lower surface of the heat transfer block 11, and the entire support portion 12 are formed by the single heat insulating portion 13. Since it is covered, the portion where cold heat generated by the Stirling refrigerator 21 may leak is minimized, and the inside of the housing space surrounded by the container 8 and the inner lid 3 can be efficiently cooled.

また、前記スターリング冷凍機２１を作動させると、前記ヒータ１８にも通電される。これによって、前記ヒータ１８が発熱する。この熱は、前記ヒータ１８から前記伝熱層２８に伝導する。これによって、前記伝熱層２８の温度が上昇する。なお、前述した通り、前記ヒータ１８は、図７に示すように、前記上面部１７の中央よりもやや庫外側寄りに設けられる。また、前記伝熱層２８の内端は、前記容器８の側面部８Ｗの上部と僅かな空隙を隔てて対向する前記内蓋本体２６の外周面にあり、前記内蓋本体２６の下面までは延びていない。このため、前記ヒータ１８及び伝熱層２８は、前記容器８と内蓋とで囲まれる収容空間から離れた位置にある。これによって、前記収容空間内の温度上昇を最小限にすることができる。更に、前記伝熱層２８が前記フランジ部２７に設けられると共に、このフランジ部２７が前記保冷容器２の上面部１７と前記外蓋４の下面部とで挟持されることで、前記伝熱層２８とヒータ１８とを接触させ続けることができる。 Further, when the Stirling refrigerator 21 is operated, the heater 18 is also energized. As a result, the heater 18 generates heat. This heat is conducted from the heater 18 to the heat transfer layer 28 . As a result, the temperature of the heat transfer layer 28 rises. As described above, the heater 18 is provided slightly outside the center of the upper surface portion 17, as shown in FIG. The inner end of the heat transfer layer 28 is located on the outer peripheral surface of the inner lid main body 26 facing the upper portion of the side surface portion 8W of the container 8 with a slight gap therebetween. not extended. Therefore, the heater 18 and the heat transfer layer 28 are located away from the housing space surrounded by the container 8 and the inner lid. Thereby, the temperature rise in the accommodation space can be minimized. Furthermore, the heat transfer layer 28 is provided on the flange portion 27, and the flange portion 27 is sandwiched between the upper surface portion 17 of the cold insulating container 2 and the lower surface portion of the outer lid 4, thereby 28 and heater 18 can be kept in contact.

そして、前記容器８と内蓋３とで囲まれる収容空間を冷却し続けると、前記断熱部１３及び断熱性を有する前記内蓋３、外蓋４で囲まれていても、前記収容空間から冷熱が漏れる。特に、前記容器８の側面部８Ｗから前記外殻体９の表面を経て、前記保冷庫１の外部へ冷熱が漏れやすい。一方、前記収容空間からの冷熱の漏れを抑えるために、前記内蓋本体２６の外周面、即ち前記伝熱層２８と前記側面部８Ｗとの間隔は狭くしておく必要がある。このように、前記伝熱層２８と前記側面部８Ｗとの間隔が狭いと、前記収容空間内の空気中に含まれる水分が凍結した場合、前記側面部８Ｗに前記内蓋３が貼り付いて、この内蓋３が前記保冷容器２から取り外しにくくなる虞があった。また、前述のように、漏れた冷熱により、外気に含まれる水分が前記フランジ部２７の下面、即ち前記伝熱層２８と前記上面部１７との間で凍結して貼り付き、前記内蓋３が前記保冷容器２から取り外しにくくなる虞があった。特に、外蓋や内蓋の開閉を繰り返すと、外気に含まれる水分が前記側面部８Ｗと上面部１７と伝熱層２８との間で凍結しやすくなり、前記内蓋３を前記保冷容器２から取り外せなくなる虞があった。しかしながら、前述したように、前記伝熱層２８が前記ヒータ１８によって加熱されるので、前記伝熱層２８の凍結が抑制される。そして、このように前記伝熱層２８の凍結が抑制されることで、前記内蓋３を前記保冷容器２から取り外せなくなる虞を減ずることができる。 Then, if the storage space surrounded by the container 8 and the inner lid 3 is continuously cooled, even if the storage space is surrounded by the heat insulating portion 13 and the heat-insulating inner lid 3 and the outer lid 4, cold heat is released from the storage space. leaks. In particular, cold heat is likely to leak from the side surface portion 8W of the container 8 to the outside of the cold storage 1 via the surface of the outer shell 9 . On the other hand, in order to suppress leakage of cold heat from the housing space, it is necessary to narrow the distance between the outer peripheral surface of the inner lid main body 26, that is, the heat transfer layer 28 and the side surface portion 8W. In this way, when the distance between the heat transfer layer 28 and the side surface portion 8W is narrow, the inner lid 3 is stuck to the side surface portion 8W when moisture contained in the air in the accommodation space freezes. , the inner lid 3 may become difficult to remove from the cold insulating container 2 . In addition, as described above, due to the leaked cold heat, the moisture contained in the outside air freezes and sticks between the lower surface of the flange portion 27, that is, the heat transfer layer 28 and the upper surface portion 17, and the inner lid 3 may become difficult to remove from the cold insulation container 2. In particular, when the outer lid and the inner lid are repeatedly opened and closed, moisture contained in the outside air tends to freeze between the side surface portion 8W, the upper surface portion 17, and the heat transfer layer 28, and the inner lid 3 is separated from the cold insulation container 2. There was a risk that it would not be possible to remove it from the However, as described above, since the heat transfer layer 28 is heated by the heater 18, freezing of the heat transfer layer 28 is suppressed. By suppressing the freezing of the heat transfer layer 28 in this manner, it is possible to reduce the possibility that the inner lid 3 cannot be removed from the cold insulation container 2 .

なお、このように前記伝熱層２８の加熱を続けたとしても、前記収容空間内が極低温まで冷却される場合、前記伝熱層２８と側面部８Ｗとの間における空気中の水分の凍結、及び外気に含まれる水分の凍結を阻止できない虞がある。この場合、図示しない操作部を操作し、前記ヒータ１８の発熱量を増大させることで、前記側面部８Ｗと上面部１７と伝熱層２８との間に形成された氷を融解させることができる。これによって、前記内蓋３を前記保冷容器２から取り外すことができるようになる。 Even if the heating of the heat transfer layer 28 is continued in this way, if the inside of the accommodation space is cooled to an extremely low temperature, the moisture in the air between the heat transfer layer 28 and the side portion 8W will freeze. , and freezing of moisture contained in the outside air may not be prevented. In this case, the ice formed between the side surface portion 8W, the upper surface portion 17, and the heat transfer layer 28 can be melted by operating an operation portion (not shown) to increase the amount of heat generated by the heater 18. . As a result, the inner lid 3 can be removed from the cold insulation container 2 .

また、前述したように、前記フランジ部２７の外周縁が前記囲い部１９によって囲まれており、この囲い部１９の上端と前記外蓋４との間に形成される隙間が僅かであるので、前記上面部１７と外蓋４との間に流入する外気の量を抑えることができる。このため、前記外蓋４の開閉回数を抑えることで、前記内蓋３のフランジ部２７と前記保冷容器２の上面部１７との間の凍結を抑えることができる。また、前記ヒータ１８が発生させる熱の庫外への流出を前記囲い部１９によって抑えることで、凍結予防或いは解氷を効率的に行うことができる。 Further, as described above, the outer peripheral edge of the flange portion 27 is surrounded by the enclosing portion 19, and the gap formed between the upper end of the enclosing portion 19 and the outer lid 4 is small. The amount of outside air flowing between the upper surface portion 17 and the outer lid 4 can be suppressed. Therefore, freezing between the flange portion 27 of the inner lid 3 and the upper surface portion 17 of the cold insulation container 2 can be suppressed by reducing the number of times the outer lid 4 is opened and closed. Moreover, by suppressing the outflow of the heat generated by the heater 18 to the outside of the refrigerator by the enclosure 19, it is possible to efficiently prevent freezing or thaw the ice.

以上のように本発明は、開口部５を有する保冷容器２と、この保冷容器２の開口部５を塞ぐ内蓋３と、この内蓋３を覆うように前記開口部５を塞ぐ外蓋４とを有する保冷庫１において、前記内蓋３の表面に伝熱層２８が設けられ、前記保冷容器２及び／又は前記外蓋４に加熱源としてのヒータ１８が設けられると共に、このヒータ１８と前記伝熱層２８とが伝熱関係とされることにより、前記ヒータ１８が発生させる熱を前記内蓋３の伝熱層２８に与えることで、前記保冷容器２の開口部５と前記内蓋３の外周部との間での凍結を防止するか又はこれらの間で生じた氷を融解させ、前記内蓋３の前記保冷容器２に対する着脱を確実に行わせることができるものである。 As described above, the present invention comprises a cold insulating container 2 having an opening 5, an inner lid 3 closing the opening 5 of the cold insulating container 2, and an outer lid 4 closing the opening 5 so as to cover the inner lid 3. A heat transfer layer 28 is provided on the surface of the inner lid 3, and a heater 18 as a heat source is provided on the cold insulation container 2 and/or the outer lid 4, and the heater 18 and Since the heat transfer layer 28 and the heat transfer layer 28 are in a heat transfer relationship, the heat generated by the heater 18 is applied to the heat transfer layer 28 of the inner lid 3, so that the opening 5 of the cold insulation container 2 and the inner lid It is possible to prevent freezing between the inner lid 3 and the outer peripheral portion of the container 3 or melt the ice generated therebetween, so that the inner lid 3 can be reliably attached to and detached from the cold insulating container 2 .

また、本発明は、前記伝熱層２８を、前記内蓋３における前記保冷容器２との接触部位に設けることにより、前記ヒータ１８が発生させる熱を前記内蓋３の伝熱層２８に伝導させて、前記保冷容器２の開口部５と前記内蓋３の外周部との間での凍結を防止するか又はこれらの間で生じた氷を融解させ、前記内蓋３の前記保冷容器２に対する着脱を確実に行わせることができるものである。 Further, in the present invention, the heat generated by the heater 18 is conducted to the heat transfer layer 28 of the inner cover 3 by providing the heat transfer layer 28 at the contact portion of the inner cover 3 with the cold insulation container 2 . to prevent freezing between the opening 5 of the cold-insulated container 2 and the outer peripheral portion of the inner lid 3, or to melt the ice generated therebetween, so that the cold-insulated container 2 of the inner lid 3 It is possible to reliably attach and detach to.

また、本発明は、前記内蓋３の外周部にフランジ部２７を設け、このフランジ部２７に伝熱層２８を設け、前記フランジ部２７を前記保冷容器２と外蓋４とで挟持することにより、前記伝熱層２８及び加熱源１８を前記保冷容器２の収容空間から離れた位置にして、収容空間内の温度上昇を最小限にすると共に、前記伝熱層２８とヒータ１８とを接触させ続けることができるものである。 Further, according to the present invention, a flange portion 27 is provided on the outer peripheral portion of the inner lid 3 , a heat transfer layer 28 is provided on the flange portion 27 , and the flange portion 27 is sandwiched between the cold insulating container 2 and the outer lid 4 . By positioning the heat transfer layer 28 and the heat source 18 away from the accommodation space of the cold insulation container 2, the temperature rise in the accommodation space is minimized, and the heat transfer layer 28 and the heater 18 are brought into contact with each other. It is something that can be continued.

更に、本発明は、前記フランジ部２７の外周部を露出させないように、前記保冷容器２及び／又は外蓋４に囲い部１９を設けることにより、外気の熱により伝熱層２８の温度を上昇させすぎないようにすることができるばかりでなく、伝熱層２８の熱が外気に放出されないようにして、効率的に前記保冷容器２の開口部５と前記内蓋３との間での凍結を防止するか又はこれらの間で生じた氷を融解させ、前記内蓋３の前記保冷容器２に対する着脱を確実に行わせることができるものである。 Furthermore, according to the present invention, the temperature of the heat transfer layer 28 is raised by the heat of the outside air by providing the enclosure 19 on the cold insulation container 2 and/or the outer lid 4 so as not to expose the outer peripheral portion of the flange 27. In addition, the heat of the heat transfer layer 28 is prevented from being released to the outside air, so that the opening 5 of the cold insulation container 2 and the inner lid 3 are efficiently frozen. or melt the ice generated between them, so that the attachment and detachment of the inner lid 3 with respect to the cold insulation container 2 can be reliably carried out.

なお、本発明は以上の実施形態に限定されるものではなく、発明の要旨の範囲内で種々の変形実施が可能である。例えば、上記実施形態では、保冷容器の上面部に加熱源を設けたが、外蓋の下面に加熱源を設けてもよい。また、上記実施形態では、加熱源と伝熱層を接触させたが、両者が伝熱関係にあれば、間隔を開けて両者を設けてもよい。更に、上記実施形態では、保冷容器の上面部に囲い部を設けたが、外蓋の下面部に囲い部を設けてもよく、また、保冷容器の上面部と外蓋の下面部の両方に囲い部を設けてもよい。 It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the gist of the invention. For example, in the above embodiment, the heat source is provided on the upper surface of the cold container, but the heat source may be provided on the lower surface of the outer lid. Further, in the above embodiment, the heat source and the heat transfer layer are brought into contact with each other. Furthermore, in the above embodiment, the enclosure is provided on the top surface of the cold insulation container, but the enclosure may be provided on the bottom surface of the outer lid. An enclosure may be provided.

１ 保冷庫
２ 保冷容器
３ 内蓋
４ 外蓋
５ 開口部
１８ ヒータ（加熱源）
１９ 囲い部
２１ スターリング冷凍機（冷凍機）
２７ フランジ部
２８ 伝熱層
Reference Signs List 1 cold storage 2 cold storage container 3 inner lid 4 outer lid 5 opening 18 heater (heating source)
19 Enclosure 21 Stirling refrigerator (refrigerator)
27 flange portion 28 heat transfer layer

Claims (4)

開口部を有する保冷容器と、この保冷容器の開口部を塞ぐ内蓋と、この内蓋を覆うように前記開口部を塞ぐ外蓋とを有する保冷庫において、
前記内蓋の表面に伝熱層が設けられ、前記保冷容器及び／又は前記外蓋に加熱源が設けられると共に、この加熱源と前記伝熱層とが伝熱関係とされることを特徴とする保冷庫。 A cold storage container having an opening, an inner lid that closes the opening of the cold storage container, and an outer lid that closes the opening so as to cover the inner lid,
A heat transfer layer is provided on the surface of the inner lid, a heat source is provided on the cold insulation container and/or the outer lid, and the heat source and the heat transfer layer are in a heat transfer relationship. Cold storage. 前記伝熱層が、前記内蓋における前記保冷容器との接触部位に設けられることを特徴とする請求項１記載の保冷庫。 2. The cold storage box according to claim 1, wherein said heat transfer layer is provided at a portion of said inner lid that contacts said cold storage container. 前記内蓋の外周部にフランジ部が設けられ、このフランジ部に伝熱層が設けられ、前記フランジ部が前記保冷容器と外蓋とによって挟持されることを特徴とする請求項１記載の保冷庫。 2. The cold insulating container according to claim 1, wherein a flange portion is provided on the outer peripheral portion of the inner lid, a heat transfer layer is provided on the flange portion, and the flange portion is sandwiched between the cold insulating container and the outer lid. warehouse. 前記フランジ部の外周部を露出させないように、前記保冷容器及び／又は外蓋に囲い部が設けられることを特徴とする請求項３記載の保冷庫。
4. The cold-storage box according to claim 3, wherein the cold-storage container and/or the outer cover is provided with a surrounding portion so as not to expose the outer peripheral portion of the flange portion.
JP2022023716A 2022-02-18 2022-02-18 Cold storage Pending JP2023120712A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581688U (en) * 1978-12-01 1980-06-05
JPH08100975A (en) * 1994-09-30 1996-04-16 Matsushita Electric Works Ltd Cold or warm keeping storage
WO2021124875A1 (en) * 2019-12-18 2021-06-24 Ｐｈｃホールディングス株式会社 Refrigeration device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581688U (en) * 1978-12-01 1980-06-05
JPH08100975A (en) * 1994-09-30 1996-04-16 Matsushita Electric Works Ltd Cold or warm keeping storage
WO2021124875A1 (en) * 2019-12-18 2021-06-24 Ｐｈｃホールディングス株式会社 Refrigeration device

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