TW201837406A

TW201837406A - refrigerator

Info

Publication number: TW201837406A
Application number: TW107109042A
Authority: TW
Inventors: 山村毅; 西貝恭輝
Original assignee: 日商三菱電機股份有限公司
Priority date: 2017-04-10
Filing date: 2018-03-16
Publication date: 2018-10-16
Also published as: CN208059386U; JP6719661B2; TWI654402B; WO2018189777A1; AU2017409203B2; JPWO2018189777A1; CN108692503A; AU2017409203A1; RU2724770C1; SG11201906625TA

Abstract

A refrigerator according to the present invention comprises: a refrigeration chamber set to a refrigeration temperature band; a supercooling preservation chamber provided to the lower side within the refrigeration chamber, the supercooling preservation chamber cooling a to-be-cooled article so as to reach a supercooling temperature that is below the refrigeration temperature band and is equal to or less than freezing temperature; and a top plate configured such that air is sealed between a plurality of transparent plate-shaped members that face each other, the top plate serving as the upper surface of the supercooling preservation chamber.

Description

冰箱 Refrigerator

本發明係有關於一種冰箱，尤其係有關於一種具有將被冷卻物設定成過冷卻狀態之功能的冰箱。 The present invention relates to a refrigerator, and more particularly, to a refrigerator having a function of setting an object to be cooled to a supercooled state.

一般，在冰箱，在仍然維持品質下保存食品時，在儘量低的溫度且維持於不會結凍較佳。作為實現這種保存者，提議在過冷卻狀態保存食品的方法。此處，過冷卻狀態係食品達到結凍點以下，亦不會開始結凍，而是非結凍狀態。可是，在結凍點以下(例如約0℃以下)保存食品的情況，因撞擊或某種原因，過冷卻狀態被解除，而具有在食品產生冰結晶的可能性。而且，過冷卻狀態被解除下置之不理時，食品之結凍進展，因結凍所造成之細胞損傷而食品的品質就降低。 Generally, it is better to keep food in a refrigerator at a temperature as low as possible and to keep it from freezing when storing food under still quality. As a method of achieving such preservation, a method of storing food in a supercooled state has been proposed. Here, the supercooled state means that the food does not start to freeze, but the food is below the freezing point, but is not frozen. However, when the food is stored below the freezing point (for example, below about 0 ° C), the supercooled state is released due to impact or some reason, and ice crystals may be generated in the food. Moreover, when the supercooled state is removed and left unattended, the freezing of the food progresses, and the quality of the food is reduced due to cell damage caused by the freezing.

為了避免這種問題，週期性地變更溫度，提議使因過冷卻狀態之解除所產生之冰結晶熔化的方法。例如，揭示一種冰箱(例如參照專利文獻1)，該冰箱係在將食品設定成過冷卻狀態之過冷卻運轉後，根據在冷藏運轉的溫度設定之冷卻手段的運轉與停止重複一次以上的情況，使過冷卻運轉再開始。在專利文獻1所記載之冰箱，在因過冷卻運轉而食品之結凍進展的情況，亦藉由進行根據比過冷卻運轉之設定溫度更高的設定溫度之冷藏運轉，可防止食品完全地結凍。 In order to avoid such a problem, a method of periodically changing the temperature is proposed to melt the ice crystals generated by the release of the supercooled state. For example, there is disclosed a refrigerator (for example, refer to Patent Document 1) in which a food is placed in a supercooled state in a supercooled operation, and the operation and stop of the cooling means set in the temperature of the refrigerated operation are repeated more than once, Restart the supercooling operation. In the refrigerator described in Patent Document 1, when the freezing of the food progresses due to the supercooling operation, the refrigerating operation at a set temperature higher than the set temperature of the supercooling operation can also prevent the food from completely freezing freeze.

又，揭示一種冰箱(例如參照專利文獻2)，該冰箱係重複地進行將冰箱內設定溫度設定成比食品之結凍點更低之溫度的低溫步驟、與設定成比結凍點更高之溫度的升溫步驟。在專利文獻2的冰箱，亦在低溫步驟食品之過冷卻狀態被解除，在食品產生冰結晶，而開始結凍的情況，亦藉由在預定之時序使升溫步驟開始，實現過冷卻狀態，而可穩定地維持食品之過冷卻狀態。 Also disclosed is a refrigerator (for example, refer to Patent Document 2) which repeatedly performs a low-temperature step of setting a set temperature in the refrigerator to a temperature lower than a freezing point of food, and a setting lower than a freezing point of food. The step of increasing the temperature. In the refrigerator of Patent Document 2, the super-cooled state of the food is also released in the low-temperature step, and ice crystals are formed in the food to start freezing. The super-cooled state is also realized by starting the heating step at a predetermined timing, It can stably maintain the supercooled state of food.

另一方面，在具有低溫室與過冷卻保存室可切換之貯藏室的冰箱，揭示一種在過冷卻保存室之頂板正下使用隔熱構件的構造(例如參照專利文獻3)。在專利文獻3的冰箱，可提高過冷卻保存室之隔熱性及冷卻性，而且可防止在過冷卻保存室所發生之結露。 On the other hand, in a refrigerator having a storage room in which a low-temperature greenhouse and a supercooled storage room can be switched, a structure in which a heat-insulating member is used directly under the ceiling of the supercooled storage room is disclosed (for example, refer to Patent Document 3). In the refrigerator of Patent Document 3, the heat insulation and cooling properties of the supercooled storage room can be improved, and dew condensation occurring in the supercooled storage room can be prevented.

又，揭示一種在過冷卻保存室之頂板正下具有蓄冷劑之構造的冰箱(例如參照專利文獻4)。在專利文獻4，藉蓄冷劑，在貯藏室內溫度成為設定溫度以上的情況係吸熱而在成為設定溫度以下的情況係發熱。因此，使貯藏室內之空氣溫度變成恆溫，即，可抑制貯藏室內之空氣溫度的變動，而可防止生鮮食品之品質變差。 Furthermore, a refrigerator having a structure in which a coolant is stored directly under the ceiling of the supercooled storage chamber is disclosed (for example, refer to Patent Document 4). In Patent Document 4, when the temperature of the storage room is higher than the set temperature by the coolant, the heat is absorbed, and when the temperature is lower than the set temperature, the heat is generated. Therefore, the temperature of the air in the storage room is kept constant, that is, the fluctuation of the air temperature in the storage room can be suppressed, and the quality of the fresh food can be prevented from being deteriorated.

【先行專利文獻】 [Leading Patent Literature] 【專利文獻】 [Patent Literature]

[專利文獻1]日本專利第4647047號公報 [Patent Document 1] Japanese Patent No. 4647047

[專利文獻2]日本專利第4948562號公報 [Patent Document 2] Japanese Patent No. 4948562

[專利文獻3]日本特開2013-083364號公報 [Patent Document 3] Japanese Patent Laid-Open No. 2013-083364

[專利文獻4]日本特開2015-038391號公報 [Patent Document 4] Japanese Patent Laid-Open No. 2015-038391

例如，對在過冷卻狀態保存被冷卻物的過冷卻保存室，今後被要求便利性，但是在上述的專利文獻，例如，具有如下的課題。 For example, a supercooled storage room that stores a cooled object in a supercooled state is required to be convenient in the future, but the above-mentioned patent documents have, for example, the following problems.

例如，在專利文獻1的冰箱，執行冷藏運轉的時間係成為重複在一般之冷藏運轉的循環一次以上的時間。此時間係未考慮與執行過冷卻運轉的時間及在各運轉時之熱量的關係。因此，在執行冷藏運轉的時間相對執行過冷卻運轉之時間太短的情況，無法使食品之冰結晶充分地熔化，而具有食品之結凍進展的可能性。又，在執行冷藏運轉的時間相對執行過冷卻運轉之時間太長的情況，在食品之保存期間的平均溫度就變高，而具有引起食品之品質降低的可能性。 For example, in the refrigerator of Patent Document 1, the time for performing the refrigerating operation is a time to repeat the cycle of the general refrigerating operation more than once. This time does not take into consideration the relationship with the time during which the supercooling operation is performed and the amount of heat during each operation. Therefore, in a case where the time for performing the refrigerating operation is relatively short compared to the time for performing the supercooling operation, the ice crystals of the food cannot be sufficiently melted, and there is a possibility that the freezing of the food progresses. In addition, when the time for performing the refrigerating operation is too long compared to the time for performing the supercooling operation, the average temperature during the storage of the food becomes high, which may cause a reduction in the quality of the food.

又，在專利文獻2的冰箱，以使在低溫步驟所產生之冰結晶完全地熔化為目的，設定在低溫步驟的時間等。詳細地說明之，在專利文獻2的冰箱，將低溫步驟的時間設定成在從水變成冰時所放出之潛熱Q1、在結凍進行中從水所奪走之潛熱Q2、以及在解凍進行中供給冰之熱Q3滿足Q3≧Q1+Q2的關係。藉此，可使在低溫步驟所產生之冰結晶完全地熔化。可是，在專利文獻2的冰箱，需要細微之溫度控制。因此，例如，在擴大過冷卻保存室的高度，而擴大過冷卻保存室之容積的情況，在上部區域與下部區域就產生溫差，而無法進行所要之溫度控制，具有引起食品之品質降低的可能性。 Furthermore, in the refrigerator of Patent Document 2, the time of the low-temperature step is set for the purpose of completely melting the ice crystals generated in the low-temperature step. To explain in detail, in the refrigerator of Patent Document 2, the time of the low-temperature step is set to the latent heat Q1 released when the water changes from ice to ice, the latent heat Q2 taken away from the water during the freezing process, and the thawing process. The ice heat Q3 satisfies the relationship of Q3 ≧ Q1 + Q2. Thereby, the ice crystals produced in the low temperature step can be completely melted. However, the refrigerator of Patent Document 2 requires fine temperature control. Therefore, for example, when the height of the supercooled storage chamber is enlarged and the volume of the supercooled storage chamber is enlarged, a temperature difference occurs between the upper region and the lower region, and the desired temperature control cannot be performed, which may cause a reduction in the quality of the food. Sex.

又，專利文獻3的冰箱係在過冷卻保存室之上部的頂板正下使用隔熱構件。因此，過冷卻保存室之隔熱性及冷卻性提高，並可擴大過冷卻保存室的容積。可是，因為在頂板正下使用隔熱構件，所以即使在頂板使用玻璃等之透明構件，亦無法從頂板側看到過冷卻保存室的內部。因此，若不打開過冷卻保存室，無法確認過冷卻保存室的內容物，而便利性變差。 Moreover, the refrigerator of patent document 3 uses a heat insulation member just below the top plate of the supercooled storage chamber. Therefore, the thermal insulation and cooling properties of the supercooled storage chamber are improved, and the volume of the supercooled storage chamber can be enlarged. However, since a heat insulating member is used directly under the top plate, even if a transparent member such as glass is used for the top plate, the inside of the supercooled storage chamber cannot be seen from the top plate side. Therefore, unless the supercooled storage chamber is opened, the contents of the supercooled storage chamber cannot be confirmed, and convenience is deteriorated.

又，專利文獻4的冰箱係藉由在過冷卻保存室的內部使用蓄冷劑，作成可進行過冷卻保存。可是，使用蓄冷劑時，導致耗費增大。又，即使在頂板使用玻璃等之透明構件，亦具有被配置於頂板正下的蓄冷材料使過冷卻保存室之內部的可視性變差的問題。 In addition, the refrigerator of Patent Document 4 is configured to be capable of being subcooled and stored by using a cold storage agent inside the supercooled storage chamber. However, when a coolant is used, the cost increases. In addition, even if a transparent member such as glass is used for the top plate, there is a problem that the visibility of the inside of the supercooled storage chamber is deteriorated by the cold storage material disposed directly under the top plate.

本發明係為了解決如上述所示之課題的至少一個所開發者，其目的在於提供一種具有便利性比以往更佳之過冷卻保存室的冰箱。 The present invention has been made by at least one of the developers to solve the problems described above, and an object of the present invention is to provide a refrigerator having a supercooled storage compartment having better convenience than in the past.

為了解決如上述所示之習知的課題，本發明之冰箱係包括：被設定於冷藏溫度帶的冷藏室；過冷卻保存室，係被設置於冷藏室的下方，並對被冷卻物冷卻成比冷藏溫度帶更低之結凍溫度以下的過冷卻溫度；以及頂板，係構成為將氣體密封於複數片相對向之板狀的透明構件之間，並成為過冷卻保存室的上面；頂板係具有頂板加熱裝置。 In order to solve the conventional problems as described above, the refrigerator of the present invention includes: a refrigerating room set in a refrigerating temperature zone; and a subcooling storage room provided under the refrigerating room, and cools the object to be cooled into Subcooling temperature below the freezing temperature lower than the refrigerating temperature zone; and the top plate, which is configured to seal the gas between a plurality of opposing plate-shaped transparent members and becomes the upper surface of the supercooled storage chamber; the top plate system With top plate heating device.

若依據本發明之冰箱，因為將成為過冷卻保存室之上面的頂板構成為將氣體密封於複數片透明構件之間，所以一面可看到過冷卻保存室之內部的狀態，一面具有高的隔熱性能。因此，可使過冷卻保存室在高度方向變高，可擴大內容積，而可提高過冷卻保存室的便利性。 According to the refrigerator according to the present invention, since the top plate that becomes the upper surface of the supercooled storage chamber is configured to seal the gas between a plurality of transparent members, the state of the interior of the supercooled storage chamber can be seen on one side, and the high partition Thermal performance. Therefore, the supercooled storage chamber can be made taller in the height direction, the inner volume can be enlarged, and the convenience of the supercooled storage chamber can be improved.

1‧‧‧冰箱 1‧‧‧ refrigerator

2‧‧‧冷藏室 2‧‧‧ freezer

3‧‧‧蔬菜室 3‧‧‧ Vegetable Room

4‧‧‧冷凍室 4‧‧‧ freezer

5‧‧‧過冷卻保存室 5‧‧‧ supercooled preservation room

6‧‧‧壓縮機 6‧‧‧compressor

7‧‧‧邊界壁 7‧‧‧ border wall

8‧‧‧冷卻器 8‧‧‧ cooler

9‧‧‧送風風扇 9‧‧‧Air supply fan

10、10a、10b‧‧‧第1風路 10, 10a, 10b‧‧‧The first wind road

11、11a、11b‧‧‧擋板 11, 11a, 11b ‧‧‧ bezel

12‧‧‧第2風路 12‧‧‧Second Wind Road

13‧‧‧前壁 13‧‧‧ front wall

14‧‧‧收容容器 14‧‧‧Container

15‧‧‧過冷卻保存室吸入口 15‧‧‧ Suction port for supercooled preservation room

16‧‧‧加熱器 16‧‧‧ heater

17‧‧‧吹出風路 17‧‧‧ blow out the wind

18‧‧‧頂板 18‧‧‧ roof

19‧‧‧供水槽 19‧‧‧ water tank

21‧‧‧棚架 21‧‧‧Scaffolding

22‧‧‧冷藏室吸入口 22‧‧‧Refrigerator suction port

23‧‧‧靜止空氣層 23‧‧‧ still air layer

24‧‧‧透明構件 24‧‧‧ transparent member

25‧‧‧線加熱器 25‧‧‧line heater

26‧‧‧肋構件 26‧‧‧ rib member

27‧‧‧樹脂框架 27‧‧‧ resin frame

50‧‧‧框體 50‧‧‧Frame

100‧‧‧控制裝置 100‧‧‧control device

第1圖係示意地表示本發明之第1實施形態的冰箱1之外觀的正視圖。 FIG. 1 is a front view schematically showing the appearance of the refrigerator 1 according to the first embodiment of the present invention.

第2圖係示意地表示本發明的第1實施形態之包含第1風路10的冰箱1內之構成的內部構成圖。 FIG. 2 is an internal configuration diagram schematically showing a configuration in the refrigerator 1 including the first air passage 10 according to the first embodiment of the present invention.

第3圖係示意地表示本發明的第1實施形態之包含第2風路12的冰箱1內之構成的內部構成圖。 FIG. 3 is an internal configuration diagram schematically showing the configuration in the refrigerator 1 including the second air path 12 according to the first embodiment of the present invention.

第4圖係表示在本發明之第1實施形態的冰箱1之以過冷卻保存室5為中心的構件等之位置關係的圖。 FIG. 4 is a diagram showing the positional relationship of members and the like centered on the supercooled storage chamber 5 in the refrigerator 1 according to the first embodiment of the present invention.

第5圖係表示本發明之第1實施形態的冰箱1所具有之頂板18的構成之模式圖。 Fig. 5 is a schematic diagram showing a configuration of a top plate 18 included in the refrigerator 1 according to the first embodiment of the present invention.

第6圖係從過冷卻保存室5的上面側觀察本發明之第1實施形態的冰箱1所具有之頂板18的模式圖。 FIG. 6 is a schematic view of the top plate 18 included in the refrigerator 1 according to the first embodiment of the present invention as viewed from the upper surface of the supercooled storage chamber 5.

第7圖係表示使用本發明之第1實施形態的冰箱1所具有之頂板18的情況之過冷卻保存室5之冷卻結果的圖。 FIG. 7 is a diagram showing the cooling results of the supercooled storage chamber 5 when the top plate 18 included in the refrigerator 1 according to the first embodiment of the present invention is used.

第8圖係表示本發明之第2實施形態的冰箱1所具有之頂板18的構成之模式圖。 Fig. 8 is a schematic diagram showing the configuration of a top plate 18 included in the refrigerator 1 according to the second embodiment of the present invention.

第9圖係從過冷卻保存室5的上面側觀察本發明之第2實施形態的冰箱1所具有之頂板18的模式圖。 Fig. 9 is a schematic view of the top plate 18 of the refrigerator 1 according to the second embodiment of the present invention as viewed from the upper surface side of the supercooled storage chamber 5.

本發明係作成提高在過冷卻保存室之頂板的隔熱性能，並在高度方向擴大，而可擴大容積，該過冷卻保存室係被設置於冷藏室內部，並在比冷藏室低溫的室內，對被冷卻物進行過冷卻。在此時，作成經由頂板，可看到過冷卻保存室內部。 The present invention is designed to improve the heat insulation performance of the top plate of the supercooled storage room, and expand in the height direction to expand the volume. Subcool the object to be cooled. At this time, the inside of the supercooled storage room can be seen through the top plate.

因此，頂板係將複數片板狀的透明構件以隔著間隔的方式配置成具有空隙。藉由具有空隙，以提高隔熱性能。 Therefore, the top plate is configured such that a plurality of plate-like transparent members are provided with gaps at intervals. By having voids, heat insulation performance is improved.

進而，頂板係具有肋，保持透明構件間的間隔。而且，在肋內部，舖設成為加熱裝置的線加熱器。藉由採用線加熱器，可在不顯著地損害可視性下，將加熱裝置設置於頂板。而且，以防止在頂板之結露、頂板的附近所保存之被冷卻物的結凍等。 Furthermore, the top plate has ribs, and the space between the transparent members is maintained. In addition, inside the ribs, a wire heater serving as a heating device is laid. By using a wire heater, the heating device can be installed on the top plate without significantly impairing visibility. Furthermore, to prevent dew condensation on the top plate and freezing of the objects to be cooled stored near the top plate.

以下，參照圖面所記載之圖，說明本發明之實施形態。在各圖，對相同或相當之部分附加相同的符號，並適當地省略或簡化其說明。又，關於在各圖所記載之構成，其形狀、大小以及配置等係可在本發明的範圍內適當地變更。又，在專利說明書中之各構成元件的位置關係(例如上下關係等)係原則上，將冰箱1設置成可使用之狀態時者。此處，在包含第1圖~第3圖之以下的圖，有各構成元件之尺寸的關係及形狀等與實際係相異的情況。 Hereinafter, embodiments of the present invention will be described with reference to the drawings described in the drawings. In each figure, the same or equivalent parts are denoted by the same reference numerals, and descriptions thereof are appropriately omitted or simplified. In addition, regarding the structure described in each figure, the shape, size, arrangement, and the like can be appropriately changed within the scope of the present invention. In addition, the positional relationship (for example, up-down relationship, etc.) of each constituent element in the patent specification is a case where the refrigerator 1 is set to a usable state in principle. Here, in the drawings including the first to third drawings, the dimensional relationship and shape of each constituent element may be different from the actual system.

第1實施形態 First Embodiment

第1圖係示意地表示本發明之第1實施形態的冰箱1之外觀的正視圖。又，第2圖係示意地表示本發明的第1實施形態之包含第1風路10的冰箱1內之構成的內部構成圖。又，第 3圖係示意地表示本發明的第1實施形態之包含第2風路12的冰箱1內之構成的內部構成圖。 FIG. 1 is a front view schematically showing the appearance of the refrigerator 1 according to the first embodiment of the present invention. FIG. 2 is an internal configuration diagram schematically showing the configuration in the refrigerator 1 including the first air path 10 according to the first embodiment of the present invention. FIG. 3 is an internal configuration diagram schematically showing the configuration in the refrigerator 1 including the second air path 12 according to the first embodiment of the present invention.

[冰箱1的構成] [Configuration of Refrigerator 1]

如第1圖所示，第1實施形態之冰箱1包括前面(正面)開口並在內部形成貯藏空間的隔熱箱體。隔熱箱體係省略詳細的圖示，由鋼鐵製之外箱、樹脂製之內箱以及被填充於外箱與內箱之間之空間的隔熱材料所構成。但，如後述所示，在冷藏室2與蔬菜室3之間，隔熱材料係不存在。在隔熱箱體之內部所形成的貯藏空間係藉複數個隔開構件隔開成保存被冷卻物的複數個貯藏室。例如，如第1圖所示，第1實施形態之冰箱1係作為複數個貯藏室，包括被配置於最上段的冷藏室2、被配置於冷藏室2之下方的蔬菜室3以及最下段的冷凍室4。此處，在蔬菜室3被設置於冷藏室2之下部區域的構造，冰箱1所包括之貯藏室的種類及個數係不是被限定為這些。又，在以下，被冷卻物係當作是食品來說明。 As shown in FIG. 1, the refrigerator 1 according to the first embodiment includes a heat-insulating box having a front (front) opening and forming a storage space inside. The heat insulation box system is omitted from the detailed illustration, and is made of a steel outer box, a resin inner box, and a heat insulating material that fills the space between the outer box and the inner box. However, as will be described later, a heat-insulating material does not exist between the refrigerator compartment 2 and the vegetable compartment 3. The storage space formed inside the heat-insulating box is divided into a plurality of storage chambers for storing the object to be cooled by a plurality of partition members. For example, as shown in FIG. 1, the refrigerator 1 of the first embodiment serves as a plurality of storage compartments, including a refrigerating compartment 2 disposed at the uppermost stage 2, a vegetable compartment 3 disposed below the refrigerating compartment 2, and a lowermost compartment. Freezing chamber 4. Here, in the structure in which the vegetable compartment 3 is provided in the lower region of the refrigerating compartment 2, the type and number of the storage compartments included in the refrigerator 1 are not limited to these. In the following, the object to be cooled is described as food.

如第2圖所示，在冰箱1之背面側，作為冷卻各貯藏室內之冷卻裝置的例子，被設置壓縮冷媒並排出的壓縮機6、作用為蒸發器並冷卻空氣的冷卻器8、以及使以冷卻器8所產生之冷氣移動的送風風扇9。進而，冰箱1具有係冷氣所流動的風路並被設置冷卻器8及送風風扇9等的第1風路10。壓縮機6係冷媒排出側與凝結器(未圖示)連接，冷媒吸入側與冷卻器8連接。冷卻器8係作用為蒸發器，使通過本身之冷媒與第1風路10的空氣進行熱交換，而產生冷氣。壓縮機6及冷卻器8係與凝結器(未圖示)及膨脹手段(未圖示)一起構成冷凍循環迴路。送風風扇9係經由第1風路10，向冷藏室2、蔬菜室3以及冷凍室4供給冷氣。 As shown in FIG. 2, as an example of a cooling device that cools each storage room on the rear side of the refrigerator 1, a compressor 6 that compresses refrigerant and discharges it, a cooler 8 that functions as an evaporator and cools air, and The air-supplying fan 9 moving with the cool air generated by the cooler 8. Further, the refrigerator 1 has a first air path 10 that is provided with an air path through which cold air flows, and is provided with a cooler 8 and an air-sending fan 9 and the like. The compressor 6 is connected to a condenser (not shown) on a refrigerant discharge side, and is connected to a cooler 8 on a refrigerant suction side. The cooler 8 functions as an evaporator, and performs heat exchange between the refrigerant passing through itself and the air in the first air passage 10 to generate cold air. The compressor 6 and the cooler 8 constitute a refrigeration cycle together with a condenser (not shown) and an expansion means (not shown). The ventilation fan 9 supplies cold air to the refrigerator compartment 2, the vegetable compartment 3, and the freezer compartment 4 via the first air passage 10.

第1風路10係從冰箱1內的下側至上側，在縱向被設置於形成於框體50內的內壁板內。更詳細地說明之，第1風路10係被設置於冷藏室2、蔬菜室3以及冷凍室4之背面側。第1風路10具有：第1風路10a，係將冷氣送風至過冷卻保存室5；及第1風路10b，係將冷氣送風至過冷卻保存室5以外之冷藏室2內的空間。而且，擋板11a被設置於第1風路10a。又，擋板11b被設置於第1風路10b。擋板11a係改變開度，而調整通過第1風路10a之冷氣的風量。又，擋板11b係改變開度，而調整通過第1風路10b之冷氣的風量。 The first air passage 10 is provided in the inner wall panel formed in the housing 50 from the lower side to the upper side in the refrigerator 1 in the longitudinal direction. To explain in more detail, the first air passage 10 is provided on the back side of the refrigerator compartment 2, the vegetable compartment 3, and the freezer compartment 4. The first air path 10 includes a first air path 10 a for supplying cool air to the supercooled storage room 5, and a first air path 10 b for sending cool air to a space in the refrigerating compartment 2 other than the supercooled storage room 5. The baffle 11a is provided in the first air passage 10a. The baffle 11b is provided on the first air passage 10b. The baffle 11a changes the opening degree and adjusts the air volume of the cold air passing through the first air path 10a. In addition, the baffle 11b changes the opening degree and adjusts the air volume of the cold air passing through the first air path 10b.

藉冷凍循環迴路的動作在冷卻器8與冷媒進行熱交換，所冷卻之冷氣係藉送風風扇9，通過冰箱1之背面的第1風路10後，被供給至冷藏室2、冷凍室4等的貯藏室。通過了冷藏室2等之冷氣係如第3圖所示，通過第2風路12後，回到冷卻器8，再被冷卻後，被送至各貯藏室。 By the operation of the refrigerating cycle, heat is exchanged between the cooler 8 and the refrigerant, and the cooled air is supplied to the refrigerating compartment 2, the freezing compartment 4 and the like through the first air passage 10 on the back of the refrigerator 1 through the air-sending fan 9. Storage room. As shown in FIG. 3, the cold air that has passed through the refrigerating compartment 2 and the like passes through the second air path 12 and returns to the cooler 8 to be cooled and then sent to each storage compartment.

又，冰箱1具有控制裝置100。而且，各貯藏室之溫度係由被設置於各貯藏室的溫度感測器(未圖示)檢測出。控制裝置100係以溫度感測器所檢測出之溫度成為在各貯藏室所設定之溫度的方式控制冰箱1內的各種機器。例如，控制裝置100係控制被設置於第1風路10a的擋板11a及被設置於第1風路10b之擋板11b的開度、壓縮機6的輸出、加熱器16的輸出、以及送風風扇9的送風量等。 The refrigerator 1 includes a control device 100. The temperature of each storage room is detected by a temperature sensor (not shown) provided in each storage room. The control device 100 controls various devices in the refrigerator 1 so that the temperature detected by the temperature sensor becomes the temperature set in each storage room. For example, the control device 100 controls the opening degree of the baffle 11a provided in the first air path 10a and the baffle 11b provided in the first air path 10b, the output of the compressor 6, the output of the heater 16, and the air supply. The amount of air supplied by the fan 9 and the like.

<冷藏室2> <Refrigerator Room 2>

冷藏室2係被設定於冷藏溫度帶(例如約3~5℃)，並收容食品的貯藏室。在冷藏室2，如第2圖所示，被設置載置食品等的棚架21等。在被形成於冷藏室2之前面的開口部，被設置開閉該開口部之旋轉式(例如雙開式)的門。此處，亦可冷藏室2的門係不是雙開式的門，而是一片式之旋轉式的門。又，內壁板成為冷藏室2內的後壁。而且，如第2圖及第3圖所示，在第1實施形態之冰箱1，過冷卻保存室5被設置於冷藏室2的最下部。過冷卻保存室5係在冷藏室2內的空間，藉頂板18與其他的空間隔開。 The refrigerating compartment 2 is a storage compartment which is set in a refrigerating temperature zone (for example, about 3 to 5 ° C.) and stores food. As shown in FIG. 2, the refrigerating compartment 2 is provided with a shelf 21 or the like on which food or the like is placed. A rotary (for example, double-opening) door that opens and closes the opening is formed in the opening formed on the front surface of the refrigerator compartment 2. Here, the door system of the refrigerator compartment 2 may not be a double-opening door, but a one-piece rotating door. The inner wall panel becomes a rear wall in the refrigerator compartment 2. Further, as shown in FIGS. 2 and 3, in the refrigerator 1 of the first embodiment, the subcooling storage room 5 is provided at the lowermost part of the refrigerating room 2. The supercooled storage compartment 5 is a space in the refrigerating compartment 2 and is separated from other spaces by a ceiling plate 18.

過冷卻保存室5係在成為比冷藏室2更低溫(例如食品之結凍點(結凍溫度)以下之是約0~-3℃的過冷卻溫度)之狀態的過冷卻狀態，保存食品的貯藏室。因此，過冷卻保存室5係適合保存例如肉、魚或這些之加工品等之食品的貯藏室。收容容器14與前壁13被設置於過冷卻保存室5。又，在過冷卻保存室5內側，具有將過冷卻保存室5內之空氣導引至第2風路12的過冷卻保存室吸入口15。此處，過冷卻保存室吸入口15與後述之冷藏室吸入口22係在平面圖上至少一部分重疊。因此，通過過冷卻保存室吸入口15之空氣與通過冷藏室吸入口22之空氣係在第2風路12匯流後回到冷卻器8。不是各自的空氣分別地回到冷卻器8。又，在過冷卻保存室5，具有可保持比冷藏室2低溫之溫度的頂板18。 The supercooled storage compartment 5 is in a supercooled state in which the food is stored at a lower temperature than the refrigerating compartment 2 (for example, a subcooling temperature of about 0 to -3 ° C below the freezing point (freezing temperature) of the food). Storage room. Therefore, the supercooled storage room 5 is a storage room suitable for storing food such as meat, fish, or processed products thereof. The storage container 14 and the front wall 13 are provided in the supercooled storage chamber 5. A subcooling storage chamber suction port 15 is provided inside the subcooling storage chamber 5 to guide the air in the subcooling storage chamber 5 to the second air path 12. Here, the supercooled storage chamber suction port 15 and the refrigerating chamber suction port 22 described later overlap at least partly in a plan view. Therefore, the air passing through the suction port 15 of the supercooled storage chamber and the air passing through the suction port 22 of the refrigerating chamber are converged in the second air path 12 and returned to the cooler 8. Not the individual air returns to the cooler 8 separately. The supercooled storage chamber 5 includes a top plate 18 capable of maintaining a temperature lower than that of the refrigerating chamber 2.

收容容器14係收容過冷卻保存室5所保存之食品的容器。收容容器14係例如是沿著在過冷卻保存室5之側壁內側所設置的軌道(未圖示)在前後方向可移動之拉出式的容器。此處，亦可軌道係位於過冷卻保存室5的底壁。又，亦可軌道係未必設置。使用者係可從過冷卻保存室5拉出收容容器14，並經由收容容器14的上面開口，進行收容容器14所收容之食品的出入。作為收容容器14的材質，例如與一般之冰箱的收容容器一樣地使用聚丙烯等。但，不是被限定為此。 The storage container 14 is a container that stores food stored in the supercooled storage chamber 5. The storage container 14 is, for example, a pull-out container that can be moved in the front-rear direction along a rail (not shown) provided inside the side wall of the supercooled storage chamber 5. Here, the rail system may be located on the bottom wall of the supercooled storage chamber 5. The track system may not necessarily be provided. The user can pull out the storage container 14 from the supercooled storage chamber 5 and pass in and out of the food stored in the storage container 14 through the upper opening of the storage container 14. As the material of the storage container 14, for example, polypropylene is used in the same manner as the storage container of a general refrigerator. However, it is not limited to this.

在過冷卻保存室5的前面側上段之空間的開口部，被設置在頂板18被固定成可轉動的前壁13。藉由拉出收容容器14，前壁13轉動而門打開。 An opening portion of the space on the upper side of the front side of the supercooled storage chamber 5 is provided on the front wall 13 to which the top plate 18 is fixed so as to be rotatable. When the storage container 14 is pulled out, the front wall 13 is rotated and the door is opened.

此處，冷藏室2的溫度調整係藉由控制裝置100控制擋板11b的開度，調整供給至冷藏室2的風量所進行。進而，過冷卻保存室5的溫度調整係藉由控制裝置100控制擋板11a的開度，調整供給至過冷卻保存室5的風量及調整後述之加熱器16的輸出所進行。 Here, the temperature adjustment of the refrigerator compartment 2 is performed by controlling the opening degree of the baffle 11b by the control device 100, and adjusting the amount of air supplied to the refrigerator compartment 2. Further, the temperature of the supercooled storage chamber 5 is adjusted by controlling the opening degree of the baffle 11a by the control device 100, adjusting the amount of air supplied to the supercooled storage chamber 5, and adjusting the output of the heater 16 described later.

<蔬菜室3> <Vegetable room 3>

蔬菜室3係設定溫度比冷藏室2更高之冷藏溫度帶(例如約3~7℃)的貯藏室。蔬菜室3係具有用以收容貯藏品之空間，並適合冷藏食品中尤其是蔬菜的貯藏室。如第2圖及第3圖所示，蔬菜室3係被設置於冷藏室2的下方側。因此，蔬菜室3係經由後述的邊界壁7，與過冷卻保存室5鄰接。拉出式的門被設置於蔬菜室3。藉此門的開閉，進行蔬菜室3與冰箱1外之間的開放及封閉。 The vegetable compartment 3 is a storage compartment with a refrigerated temperature zone (for example, about 3 to 7 ° C.) set at a higher temperature than the refrigerated compartment 2. The vegetable room 3 is a storage room for storing objects, and is suitable for refrigerated foods, especially vegetables. As shown in FIGS. 2 and 3, the vegetable compartment 3 is provided below the refrigerating compartment 2. Therefore, the vegetable compartment 3 is adjacent to the supercooled storage compartment 5 via a boundary wall 7 described later. A pull-out door is provided in the vegetable room 3. The door is opened and closed to open and close the vegetable compartment 3 and the outside of the refrigerator 1.

<邊界壁7> <Boundary wall 7>

如第2圖所示，邊界壁7係被設置於蔬菜室3與過冷卻保存室5之間的壁。邊界壁7係將蔬菜室3與過冷卻保存室5隔開。在蔬菜室3位於邊界壁7之下側的構成，不會被來自過冷卻保存室5的導熱所冷卻。因此，亦可邊界壁7係不含隔熱材料。又，如第3圖所示，邊界壁7係具有與第2風路12直接連接，並在第2風路12側吸入來自冷藏室2內之冷氣的冷藏室吸入口22。冷藏室吸入口22係形成於成為冷藏室2之內側的部分。 As shown in FIG. 2, the boundary wall 7 is a wall provided between the vegetable compartment 3 and the supercooled storage compartment 5. The boundary wall 7 separates the vegetable compartment 3 from the supercooled storage compartment 5. The structure in which the vegetable compartment 3 is located below the boundary wall 7 is not cooled by heat transfer from the supercooled storage compartment 5. Therefore, the boundary wall 7 may not include a heat insulating material. As shown in FIG. 3, the boundary wall 7 has a refrigerating compartment suction port 22 directly connected to the second air path 12 and sucking cold air from the refrigerating compartment 2 on the second air path 12 side. The refrigerator compartment suction port 22 is formed in a portion that becomes the inside of the refrigerator compartment 2.

<加熱器16> <Heater 16>

如第2圖及第3圖所示，加熱器16被設置於在過冷卻保存室5的下方支撐過冷卻保存室5之邊界壁7。加熱器16係對過冷卻保存室5內的食品加熱並使其升溫的加熱機構(加熱手段)。加熱器16係用以對食品加熱，在過冷卻保存處理的升溫步驟所使用。在過冷卻保存處理，需要防止因過度冷卻食品而使其結凍。因此，為了對過度冷卻的食品加熱而使用加熱器16來加熱。藉由加熱器16被設置於過冷卻保存室5的下方，可對過冷卻保存室5內的食品高效率地加熱。 As shown in FIG. 2 and FIG. 3, the heater 16 is provided on the boundary wall 7 that supports the subcooled storage chamber 5 below the subcooled storage chamber 5. The heater 16 is a heating mechanism (heating means) that heats food in the supercooled storage chamber 5 and raises the temperature thereof. The heater 16 is used to heat food, and is used in a temperature increasing step of a supercooling preservation process. In the supercooled storage treatment, it is necessary to prevent food from being frozen due to excessive cooling. Therefore, in order to heat the supercooled food, the heater 16 is used for heating. Since the heater 16 is provided below the supercooled storage chamber 5, the food in the supercooled storage chamber 5 can be efficiently heated.

<冷凍室4> <Freezer 4>

冷凍室4係被設定於未滿0℃之冷凍溫度帶(例如-18℃以下)的貯藏室。如第2圖及第3圖所示，冷凍室4係被設置於蔬菜室3的下側，並收容冷凍的食品。拉出式的門被設置於冷凍室4。藉此門的開閉，進行冷凍室4與冰箱1外之間的開放及封閉。 Freezing compartment 4 is a storage compartment set in a freezing temperature zone (for example, below -18 ° C) below 0 ° C. As shown in FIG. 2 and FIG. 3, the freezing compartment 4 is installed below the vegetable compartment 3 and stores frozen food. A pull-out door is provided in the freezer compartment 4. The door is opened and closed to open and close the freezer compartment 4 and the outside of the refrigerator 1.

[關於過冷卻狀態的維持] [About maintaining the supercooled state]

此處，說明將過冷卻保存室5內之食品維持於過冷卻狀態的溫度環境。為了水變成冰，需要冰結晶成長的場合，那是位於小的分子位準的冰核。在過冷卻液體中，認為因搖晃而分子重複地聚集、分散，而產生各種大小的分子集合(cluster)。在cluster很小時，內部的分子係位於冰的結合狀態，但是表面之分子係無法結合而不穩定，亦可能脫離cluster。 Here, a temperature environment in which food in the supercooled storage chamber 5 is maintained in a supercooled state will be described. Where water crystals need to grow in ice crystals, they are ice cores at small molecular levels. In a supercooled liquid, molecules are repeatedly aggregated and dispersed due to shaking, and molecular clusters of various sizes are thought to be generated. When the cluster is very small, the internal molecular system is located in the ice-bonded state, but the molecular system on the surface cannot bind and is unstable, and it may detach from the cluster.

只要cluster不超過某臨界半徑，就無法穩定地存在，而不會成為冰結晶。因此，即使達到凝固點以下，cluster也不會開始結凍。此狀態係過冷卻狀態。只要產生一個臨界半徑以上的cluster，該cluster成為核而產生冰結晶，過冷卻狀態係被解除。溫度變低時過冷卻狀態消失的機率變高。又，因物理性撞擊等的擾亂，亦液體中的搖晃變大，而產生臨界半徑以上的cluster，過冷卻狀態係消失。 As long as the cluster does not exceed a certain critical radius, it cannot exist stably without becoming ice crystals. Therefore, the cluster will not start to freeze even if it reaches below the freezing point. This state is a supercooled state. As long as a cluster with a critical radius or more is generated, the cluster becomes a nucleus and ice crystals are generated, and the supercooled state is released. The probability that the supercooled state disappears when the temperature becomes lower becomes higher. In addition, due to disturbances such as physical impact, the shaking in the liquid becomes large, and a cluster having a critical radius or more is generated, and the supercooled state disappears.

此處，因為食品係物質的混合物，常以那些物質為核，產生冰結晶。在結凍點以下(例如0℃以下)保存食品的情況，因撞擊等某種原因導致過冷卻狀態消失，具有在食品產生冰結晶的可能性。而且，對過冷卻狀態之消失置之不理時，食品之結凍進展，因結凍所造成之細胞損傷而食品的品質降低。 Here, because of a mixture of food-based substances, those substances are often used as the core, and ice crystals are generated. When the food is stored below the freezing point (for example, 0 ° C or lower), the supercooled state disappears due to some reason such as impact, and there is a possibility that ice crystals are generated in the food. Moreover, when the supercooled state disappears, the freezing of the food progresses, and the quality of the food decreases due to the cell damage caused by the freezing.

因此，在第1實施形態的冰箱1，控制將冰箱內設定溫度設定成比食品之結凍點更低之溫度的低溫步驟、與設定成比結凍點更高之溫度的升溫步驟。而且，調整是食品的保存空間之過冷卻保存室5內的溫度環境，藉由在不賦與劇烈之溫度降低等的刺激下冷卻，將食品維持於過冷卻狀態。具體而言，在維持過冷卻狀態時，過冷卻保存室5的「溫度範圍」係-4~0[℃]的範圍較佳。又，在維持過冷卻狀態時，使過冷卻保存室5內的「溫度分布」變成均勻較佳。 Therefore, in the refrigerator 1 according to the first embodiment, a low-temperature step of setting a set temperature in the refrigerator to a temperature lower than the freezing point of food and a temperature-rising step of setting a temperature higher than the freezing point are controlled. In addition, the temperature environment in the supercooled storage chamber 5 which is a food storage space is adjusted, and the food is maintained in a supercooled state by being cooled without being subjected to a stimulus such as a drastic temperature drop. Specifically, when the supercooled state is maintained, the "temperature range" of the supercooled storage chamber 5 is preferably in a range of -4 to 0 [° C]. When maintaining the supercooled state, it is preferable to make the "temperature distribution" in the supercooled storage chamber 5 uniform.

[關於冷氣之流動] [About the flow of air-conditioning]

其次，使用第2圖及第3圖，說明以冷卻器8所產生之冷氣的流動。此處，在第2圖及第3圖之箭號係表示冷氣之流動。以冷卻器8所產生之冷氣係通過送風風扇9後，被分成被送至冷藏室2側與冷凍室4側的冷氣。往冷藏室2的冷氣係通過第1風路10後，藉擋板11a及擋板11b分成往過冷卻保存室5與冷藏室2的冷氣。而且，往冷藏室2的冷氣係通過棚架21上，在冷藏室2的前方從上方向下方下降，而往第2風路12。 Next, the flow of cold air generated by the cooler 8 will be described using FIG. 2 and FIG. 3. Here, the arrows in Figs. 2 and 3 indicate the flow of cold air. The cool air generated by the cooler 8 passes through the air-sending fan 9 and is divided into cool air sent to the refrigerating compartment 2 side and the freezing compartment 4 side. After the cold air to the refrigerating compartment 2 passes through the first air passage 10, the cold air passing through the cooling storage compartment 5 and the refrigerating compartment 2 is divided by the baffle 11a and the baffle 11b. Then, the cold air to the refrigerating compartment 2 passes through the shelf 21, descends from the upper direction to the lower side in front of the refrigerating compartment 2, and goes to the second air path 12.

第4圖係表示在本發明之第1實施形態的冰箱1之以過冷卻保存室5為中心的構件等之位置關係的圖。第4圖係主要表示在包含第2圖及第3圖所示之Y-Z線的平面之冰箱1的剖面。如第2圖及第4圖所示，往過冷卻保存室5的冷氣係從與擋板11a直接連接的吹出風路17所吹出。所吹出之冷氣的一部分係從前壁13與頂板18之間的間隙，往過冷卻保存室5之前側的空間溜出。溜出至前側之空間的冷氣係在那裡與往冷藏室2之下方流動的冷氣匯流，並通過過冷卻保存室5與冷藏室2底面之下側的間隙。而且，如第3圖所示，從冷藏室吸入口22向第2風路12流出。所流出的空氣係回到第1風路10。 FIG. 4 is a diagram showing the positional relationship of members and the like centered on the supercooled storage chamber 5 in the refrigerator 1 according to the first embodiment of the present invention. Fig. 4 is a cross-section of the refrigerator 1 mainly showing a plane including the Y-Z line shown in Figs. 2 and 3. As shown in FIGS. 2 and 4, the cold air passing through the cooling storage chamber 5 is blown out from a blow-out air path 17 directly connected to the baffle 11 a. Part of the cold air blown out is from the gap between the front wall 13 and the top plate 18, and slips out through the space on the front side of the cooling storage chamber 5. The cold air that has slipped out to the space on the front side converges there with the cold air flowing below the refrigerating compartment 2 and passes through the gap between the subcooling storage compartment 5 and the bottom side of the refrigerating compartment 2 below. Then, as shown in FIG. 3, it flows out from the refrigerator compartment suction port 22 to the second air path 12. The outgoing air returns to the first air path 10.

如以上所示，藉由與過冷卻保存室5鄰接地配置於設定溫度比冷藏室2更高的蔬菜室3，過冷卻保存室5內不會被來自蔬菜室3的導熱所冷卻。因此，例如，不會如以往般受到被來自鄰接之冷凍室4的導熱所冷卻等的溫度影響。結果，過冷卻保存室5不會變成過度冷卻，而可使在過冷卻保存室5內之食品的過冷卻保存時所使用之加熱器16的升溫性能變小。結果，因為可降低加熱器16的通電率，又可將加熱器16的大小構成為小，所以可高效率地進行過冷卻保存。 As described above, by arranging the vegetable compartment 3 having a higher set temperature than the refrigerating compartment 2 adjacent to the supercooled storage compartment 5, the inside of the supercooled storage compartment 5 is not cooled by heat conduction from the vegetable compartment 3. Therefore, for example, it is not affected by the temperature, such as being cooled by heat conduction from the adjacent freezing compartment 4, as in the past. As a result, the supercooled storage chamber 5 does not become excessively cooled, and the temperature rising performance of the heater 16 used in the supercooled storage of the food in the supercooled storage chamber 5 can be reduced. As a result, the current-carrying rate of the heater 16 can be reduced, and the size of the heater 16 can be made small, so that supercooling can be performed efficiently.

又，在如第1實施形態般，是雖與過冷卻保存室5鄰接溫度卻比過冷卻保存室5高之蔬菜室3的構成，過冷卻保存室5不會被導熱所冷卻。因此，邊界壁7係亦可不含用以防止對過冷卻保存室5之導熱的隔熱材料，而可降低耗費。 In addition, as in the first embodiment, the vegetable compartment 3 has a higher temperature than the supercooled storage chamber 5 although it is adjacent to the supercooled storage chamber 5, and the supercooled storage chamber 5 is not cooled by heat conduction. Therefore, the boundary wall 7 does not need to include a heat insulation material to prevent heat transfer to the supercooled storage chamber 5, which can reduce the cost.

進而，因為邊界壁7的溫度不會降至比過冷卻保存室5的溫度更低，所以水不可能結冰。又，因為亦可不考慮邊界壁7的隔熱性能，所以是不具有隔熱材料的邊界壁7，而可使邊界壁7的厚度局部地變薄。由於這些構造性的特徵，在邊界壁7內，例如如第2圖及第3圖所示，可收容製冰用的供水槽19。因此，在第1實施形態的冰箱1，藉由將以往係配置於冷藏室內的供水槽配置於邊界壁7內，可增加過冷卻保存室5等冷藏室2的內容積，而可設法提高便利性。 Furthermore, since the temperature of the boundary wall 7 does not fall below the temperature of the supercooled storage chamber 5, water is unlikely to freeze. In addition, because the thermal insulation performance of the boundary wall 7 can also be disregarded, the boundary wall 7 does not have a heat insulating material, and the thickness of the boundary wall 7 can be made locally thin. Due to these structural features, the water supply tank 19 for ice making can be accommodated in the boundary wall 7 as shown in FIG. 2 and FIG. 3, for example. Therefore, in the refrigerator 1 of the first embodiment, by arranging the water supply tank conventionally arranged in the refrigerating chamber in the boundary wall 7, the internal volume of the refrigerating chamber 2 such as the supercooled storage chamber 5 can be increased, and convenience can be improved. Sex.

[關於頂板18] [About the top plate 18]

第5圖係表示本發明之第1實施形態的冰箱1所具有之頂板18的構成之模式圖。又，第6圖係從過冷卻保存室5的上面側觀察本發明之第1實施形態的冰箱1所具有之頂板18的模式圖。其次，使用第5圖及第6圖，說明頂板18的構成。 Fig. 5 is a schematic diagram showing a configuration of a top plate 18 included in the refrigerator 1 according to the first embodiment of the present invention. Fig. 6 is a schematic view of the top plate 18 of the refrigerator 1 according to the first embodiment of the present invention as viewed from the upper surface side of the supercooled storage chamber 5. Next, the structure of the top plate 18 is demonstrated using FIG. 5 and FIG. 6. FIG.

如第5圖所示，頂板18係將複數片板狀的透明構件24構成為相對向地排列成隔著間隔。透明構件24係將例如玻璃、樹脂等作為材料。透明構件24之間係成為空隙。空隙部分的空氣係在頂板18之熱的變動，亦抑制對流等，而作成維持靜止狀態。因此，具有高的隔熱性能。此處，亦可透明構件24之間係在整體不是空隙。例如，亦可設置保持透明構件24之間的間隔，並維持耐久性的間隔片(未圖示)。以下，將封入空氣之空隙部分當作靜止空氣層23。此處，說明成封入空氣者，但是亦可是透明之其他的氣體。 As shown in FIG. 5, the top plate 18 is configured by arranging a plurality of plate-shaped transparent members 24 so as to face each other with a gap therebetween. The transparent member 24 is made of, for example, glass, resin, or the like. A gap is formed between the transparent members 24. The air in the gap portion is caused to change in heat in the top plate 18, and convection is also suppressed to maintain a stationary state. Therefore, it has high heat insulation performance. Here, the entirety of the transparent members 24 may not be a gap. For example, a spacer (not shown) that maintains the interval between the transparent members 24 and maintains durability may be provided. Hereinafter, the air-filled void portion is referred to as a stationary air layer 23. Here, the air is described, but it may be a transparent other gas.

又，樹脂框架27被安裝於頂板18之周圍。為了對冰箱1內組裝頂板18，需要將樹脂框架27安裝於周圍。在此時，頂板18係在將複數片透明構件24排列成隔著間隔後，在周圍以橡膠或矽構件蓋住周圍而密封，確保密封性，作成來自外部的空氣不會流入靜止空氣層23的構成。此處，亦可作成在密封時，進行除濕等，而密封減少含水量的空氣。又，只要具有外部的空氣不會流入靜止空氣層23的密閉性，亦可是將樹脂框架直接安裝於積層構造之構造。 The resin frame 27 is attached around the top plate 18. In order to assemble the top plate 18 in the refrigerator 1, it is necessary to attach the resin frame 27 to the periphery. At this time, the top plate 18 is formed by arranging a plurality of transparent members 24 at intervals, and covering the periphery with a rubber or silicon member to seal the periphery to ensure the tightness, so that air from the outside does not flow into the still air layer 23 Composition. Here, it is also possible to prepare air with reduced moisture content by performing dehumidification or the like during sealing. Further, as long as the airtightness does not allow outside air to flow into the still air layer 23, a structure in which a resin frame is directly attached to a laminated structure may be employed.

靜止空氣層23的厚度T2係3mm以下較佳。這是由於靜止空氣層23的厚度成為3mm以上時，空氣變成易流動，而藉空氣靜止之隔熱性能降低。關於透明構件24的厚度T1，無特別限制。但，在考慮實際之使用的情況，若透明構件24太厚，頂板18的重量就增加。因此，透明構件24的厚度T1係例如3mm以下較佳。 The thickness T2 of the still air layer 23 is preferably 3 mm or less. This is because when the thickness of the stationary air layer 23 is 3 mm or more, air becomes easy to flow, and the heat insulation performance by air stationary is reduced. The thickness T1 of the transparent member 24 is not particularly limited. However, in consideration of actual use, if the transparent member 24 is too thick, the weight of the top plate 18 increases. Therefore, the thickness T1 of the transparent member 24 is preferably, for example, 3 mm or less.

此處，在第5圖，表示使用3片透明構件24，而靜止空氣層23成為2層的構成，但是不是限定為此。例如，靜止空氣層23係亦可是1層，亦可是3層以上。 Here, in FIG. 5, a configuration in which three transparent members 24 are used and the stationary air layer 23 has two layers is shown, but it is not limited to this. For example, the stationary air layer 23 may be one layer, or three or more layers.

藉由依以上之方式構成頂板18，即使靜止空氣層23之層數增加，亦從頂板18的上部側看到過冷卻保存室5的內部，而可確認收容容器14所收容之食品。因此，關於頂板18的隔熱性能，因為可作成比以往更高的隔熱性能，所以藉由在高度方向使過冷卻保存室5變高，可擴大內容積。 By constructing the top plate 18 as described above, even if the number of layers of the stationary air layer 23 is increased, the inside of the supercooled storage chamber 5 can be seen from the upper side of the top plate 18, and the food contained in the storage container 14 can be confirmed. Therefore, since the heat insulation performance of the top plate 18 can be made higher than conventional heat insulation performance, the inner volume can be enlarged by making the supercooled storage chamber 5 high in the height direction.

[藉頂板18之冷卻性的效果] [By cooling effect of top plate 18]

第7圖係表示使用本發明之第1實施形態的冰箱1所具有之頂板18的情況之過冷卻保存室5之冷卻結果的圖。如第7圖所示，未使用在第1實施形態所示之頂板18的習知構成之高度20mm附近的空氣溫度、與使用第1實施形態之頂板18之高度70mm附近的空氣溫度成為大致相同的冷卻性。自此得知使用頂板18的情況之在高度方向的優越性。又，在使用頂板18的情況，在高度20mm與高度70mm的空氣溫差是約1~1.5℃以內，得知在高度方向之溫度分布狀況亦不差。 FIG. 7 is a diagram showing the cooling results of the supercooled storage chamber 5 when the top plate 18 included in the refrigerator 1 according to the first embodiment of the present invention is used. As shown in FIG. 7, the temperature of the air near the height of 20 mm without the conventional configuration of the top plate 18 shown in the first embodiment is approximately the same as the temperature of the air near the height of 70 mm using the top plate 18 of the first embodiment. Cooling. Since then, the superiority in the height direction when using the top plate 18 has been found. When the top plate 18 is used, the temperature difference between the air having a height of 20 mm and a height of 70 mm is within about 1 to 1.5 ° C, and it is found that the temperature distribution in the height direction is not bad.

基本上，過冷卻保存室5內的溫度分布係需要在水平方向與高度方向保持均勻性。主要，在水平方向的溫度分布特性係根據對過冷卻保存室5供給冷氣之吹出風路17的流量而定。另一方面，高度方向的溫度分布特性係根據過冷卻保存室5的隔熱性能，尤其在上部側的隔熱而定。這是由於一般因為冷氣易滯留於下方，所以上部比較易受到過冷卻保存室5外之熱的影響。 Basically, the temperature distribution in the supercooled storage chamber 5 needs to maintain uniformity in the horizontal direction and the height direction. Mainly, the temperature distribution characteristics in the horizontal direction depend on the flow rate of the blow-out air path 17 that supplies cold air to the supercooled storage chamber 5. On the other hand, the temperature distribution characteristics in the height direction depend on the heat insulation performance of the supercooled storage chamber 5, and particularly the heat insulation on the upper side. This is because generally the cold air is easily trapped below, so the upper part is more easily affected by the heat outside the supercooled storage chamber 5.

例如，在以往之冰箱，有將位於冰箱內的急冷室分成上段急冷室與下段急冷室，並將下段急冷室作為過冷卻保存室之構造。這是用以防止過冷卻保存室和溫度比過冷卻保存室更高之冷藏室直接鄰接的構造。 For example, a conventional refrigerator has a structure in which a quenching chamber located in the refrigerator is divided into an upper quenching chamber and a lower quenching chamber, and the lower quenching chamber is used as a supercooling storage chamber. This is a structure to prevent the supercooled storage chamber and the refrigerating chamber having a higher temperature than the supercooled storage chamber from directly adjoining.

熱量係基本上從比較高的往低的傳導，以保持熱量的平衡(熱通量向低的集中)。因此，熱的傳播係成為溫度欲成為均勻的流動。冷藏室與過冷卻保存室上下地鄰接時，冷藏室側的熱量傳播至過冷卻保存室側，而成為過冷卻保存室之上部區域的溫度上升的傾向。因此，在過冷卻保存室的下部區域與上部區域之間產生溫差，而難保持在高度方向之溫度分布均勻性。 The heat is basically conducted from a relatively high level to a low level to maintain the balance of the heat (concentration of the heat flux to the low). Therefore, the heat propagation system becomes a uniform temperature flow. When the refrigerating compartment and the supercooled storage compartment are vertically adjacent to each other, heat from the refrigerating compartment side is transmitted to the subcooling storage compartment side, and the temperature of the upper region of the supercooled storage compartment tends to rise. Therefore, a temperature difference occurs between the lower region and the upper region of the supercooled storage chamber, and it is difficult to maintain the uniformity of the temperature distribution in the height direction.

因此，在第1實施形態的冰箱1，藉由強化在過冷卻保存室5之頂板18的隔熱性能，作成妨礙來自冷藏室2側之熱通量的侵入，而可抑制在過冷卻保存室5之上部區域的溫度上升。因此，不必如以往之冰箱般，將成為中間溫度區域的上部急冷室設置於冷藏室與過冷卻保存室之間。因此，例如，藉由將是上部急冷室之部分的空間容積分配成冷藏室或過冷卻保存室的內容積等，可擴大過冷卻保存室5的內容積。 Therefore, in the refrigerator 1 of the first embodiment, the heat insulation performance of the top plate 18 of the supercooled storage room 5 is strengthened to prevent the invasion of the heat flux from the refrigerating room 2 side, and it is possible to suppress the heat preservation performance in the supercooled storage room 2 5 The temperature in the upper region rises. Therefore, it is not necessary to provide an upper quenching chamber, which is an intermediate temperature region, between the refrigerating chamber and the supercooling storage chamber, as in conventional refrigerators. Therefore, for example, the internal volume of the supercooled storage room 5 can be expanded by allocating the space volume of the part which is the upper quench room to the internal volume of the refrigerating room or the supercooled storage room.

第2實施形態 Second embodiment

第8圖係表示本發明之第2實施形態的冰箱1所具有之頂板18的構成之模式圖。又，第9圖係從過冷卻保存室5的上面側觀察本發明之第2實施形態的冰箱1所具有之頂板18的模式圖。其次，使用第8圖及第9圖，說明在第2實施形態之頂板18的構成。 Fig. 8 is a schematic diagram showing the configuration of a top plate 18 included in the refrigerator 1 according to the second embodiment of the present invention. 9 is a schematic view of the top plate 18 included in the refrigerator 1 according to the second embodiment of the present invention as viewed from the upper surface side of the supercooled storage chamber 5. Next, the configuration of the top plate 18 in the second embodiment will be described with reference to Figs. 8 and 9.

如第8圖所示，第2實施形態之頂板18係在靜止空氣層23與透明構件24之間之成為靜止空氣層23的部分，具有從上面側觀察時成為格子狀的肋構件26。雖無特別限定，第2實施形態之肋構件26係為了確保可視性及穩定性，而採用截面成為倒U字形的形狀。而且，在肋構件26之中，儲存線加熱器25。線加熱器25係與加熱器16一樣，成為對過冷卻保存室5內之食品加熱而使溫度上升的頂板加熱裝置。藉由在肋構件26之中儲存線加熱器25，可構成在不顯著地損害自頂板18之上部的可視性下，配置線加熱器25的頂板18。 As shown in FIG. 8, the top plate 18 of the second embodiment is a portion that becomes the still air layer 23 between the still air layer 23 and the transparent member 24, and has a rib member 26 that is formed into a lattice shape when viewed from the upper surface side. Although not particularly limited, the rib member 26 of the second embodiment adopts a shape having an inverted U-shaped cross section in order to ensure visibility and stability. Further, among the rib members 26, a wire heater 25 is stored. The wire heater 25 is a top plate heating device that heats food in the supercooled storage chamber 5 and raises the temperature similarly to the heater 16. By storing the line heater 25 in the rib member 26, the top plate 18 of the line heater 25 can be configured without significantly impairing the visibility from the upper portion of the top plate 18.

線加熱器25係採用直徑ψ是約2~3mm者。而且，肋構件26之整體的厚度係約5~7mm較佳。又，在第8圖，將線加熱器25配置於在各靜止空氣層23的肋構件26，但是亦可配置線加熱器25之靜止空氣層23係僅1層。 The wire heater 25 uses a diameter ψ of about 2 to 3 mm. The thickness of the entire rib member 26 is preferably about 5 to 7 mm. In addition, in FIG. 8, the wire heater 25 is disposed on the rib member 26 in each of the stationary air layers 23, but the stationary air layer 23 of the wire heater 25 may be disposed in only one layer.

藉由將線加熱器25裝入頂板18，作為加熱器16之協助能力可對過冷卻保存室5的食品供給在升溫步驟的熱量。因此，可確實地防止過冷卻保存室5之在高度方向的食品之結凍，而且在頂板18的內部側，可防止透明構件24結露。 By installing the wire heater 25 in the top plate 18, the assisting ability of the heater 16 can supply heat to the food in the supercooled storage chamber 5 in the temperature increasing step. Therefore, freezing of the food in the height direction of the supercooled storage chamber 5 can be reliably prevented, and dew condensation on the transparent member 24 can be prevented on the inner side of the top plate 18.

此處，在第2實施形態，說明將控制裝置100作為對過冷卻保存室5的溫度控制擋板11及控制加熱器16、線加熱器25者，但是不是限定為此。例如亦可控制裝置100係不控制擋板11，而僅控制線加熱器25，藉此，對過冷卻保存室5內加熱。 Here, in the second embodiment, the control device 100 is described as the temperature control baffle 11, the control heater 16, and the wire heater 25 for the supercooled storage chamber 5, but it is not limited to this. For example, the control device 100 may control the inside of the supercooled storage chamber 5 without controlling the baffle 11 and only controlling the wire heater 25.

又，說明了過冷卻保存室5內的加熱器是線加熱器25的例子，但是不是限定為此。只要是可確保可視性，例如亦可以熱交換器、帕耳帖(Peltier)元件等加熱。 Moreover, although the example in which the heater in the supercooled storage chamber 5 was the wire heater 25 was demonstrated, it is not limited to this. As long as visibility is ensured, heating may be performed by, for example, a heat exchanger or a Peltier element.

第3實施形態 Third Embodiment

又，亦可過冷卻保存室5係可切換成室內的溫度被設定成約-3℃之負溫度帶的急冷室、室內的溫度為約1℃之正溫度帶的急冷室等。在此情況，可選擇適合所保存之食品的溫度帶，而可設法提高使用者的便利性。 The supercooled storage chamber 5 may be switched to a quenching chamber in which the temperature of the room is set to a negative temperature band of about -3 ° C, a quenching chamber in which the temperature is about 1 ° C in a positive temperature zone, and the like. In this case, a temperature range suitable for the food to be stored can be selected, and the convenience of the user can be improved.

又，在上述之第1實施形態及第2實施形態之冰箱1 的過冷卻保存室5，設定成要使變成過冷卻狀態的被冷卻物係不是僅限食品。例如，亦可是如非食用之小動物的生肉等從自然界所取得者。又，亦可是如複製動物等實驗用之動物的生肉等。包含可在過冷卻狀態所保存之所有的被冷卻物。 The supercooled storage chamber 5 of the refrigerator 1 in the first and second embodiments described above is set so that the object to be cooled in the supercooled state is not limited to food. For example, it may be obtained from the natural world, such as raw meat of a non-edible small animal. It may also be raw meat of experimental animals such as reproduction animals. Contains all objects to be cooled that can be stored in the supercooled state.

Claims

一種冰箱，係包括：被設定於冷藏溫度帶的冷藏室；過冷卻保存室，係被設置於該冷藏室的下方，並對被冷卻物冷卻成比冷藏溫度帶更低之結凍溫度以下的過冷卻溫度；以及頂板，係構成為將氣體密封於複數片相對向之板狀的透明構件之間，並成為該過冷卻保存室的上面；該頂板係具有頂板加熱裝置。 A refrigerator includes: a refrigerating compartment set in a refrigerating temperature zone; and a subcooling storage compartment, which is provided below the refrigerating compartment and cools a cooled object to a freezing temperature lower than a refrigerating temperature zone. A subcooling temperature; and a top plate, which is configured to seal a gas between a plurality of plate-shaped transparent members facing each other, and becomes the upper surface of the subcooling storage chamber; the top plate has a top plate heating device.

如申請專利範圍第1項之冰箱，其中包括：蔬菜室，係被配置於該冷藏室的下側，並被設定比該冷藏室更高的溫度；邊界壁，係將該蔬菜室與被設置於該冷藏室內之下方側的該過冷卻保存室之間隔開；以及加熱裝置，係被設置於該邊界壁，並對該過冷卻保存室內加熱。 For example, the refrigerator in the first scope of the patent application includes: a vegetable compartment, which is arranged below the refrigerating compartment and is set to a higher temperature than the refrigerating compartment; a boundary wall, which connects the vegetable compartment and the being A space is provided between the subcooling storage room on the lower side of the refrigerating room; and a heating device is provided on the boundary wall to heat the subcooling storage room.

如申請專利範圍第2項之冰箱，其中具有吸入該冷藏室之空氣的冷藏室吸入口，該冷藏室吸入口與吸入該過冷卻保存室之空氣的過冷卻保存室吸入口係在平面圖上至少一部分重疊。 For example, the refrigerator of the patent application No. 2 has a refrigerating compartment suction port for inhaling the air of the refrigerating compartment, and the refrigerating compartment suction port and the subcooling preservation room suction port for inhaling the air of the subcooling preservation room are at least in a plan view. Some overlap.

如申請專利範圍第2或3項之冰箱，其中製冰用之供水槽被收容於該邊界壁。 For example, for a refrigerator in the scope of patent application No. 2 or 3, a water supply tank for making ice is contained in the boundary wall.

如申請專利範圍第1至3項中任一項之冰箱，其中可將該過冷卻保存室切換成比該過冷卻溫度低之負溫度帶的局部室或比該過冷卻溫度高之正溫度帶的急冷室。 For example, the refrigerator in any one of claims 1 to 3, in which the supercooled preservation chamber can be switched to a partial chamber with a negative temperature band lower than the supercooled temperature or a positive temperature band higher than the supercooled temperature. Quench room.

如申請專利範圍第1至3項中任一項之冰箱，其中該頂板加熱裝置係線加熱器。 For example, the refrigerator according to any one of claims 1 to 3, wherein the top plate heating device is a line heater.