JP2009008391A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein storage food is deteriorated in a quality since the quality temperature rises by thermal influence from warm food in the stored food, for example, when putting the warm food in a low temperature atmosphere such as a refrigerator. <P>SOLUTION: By having a cooling member 130 having a vacuum heat insulation material 32, a cold storage agent 33 provided in an upper part of the vacuum heat insulation material 32 and a plate 34 provided in an upper part of the cold storage agent 33 and formed of a construction material superior in heat conductivity, and a case 222 storing the cooling member 130, even if the warm food is put in a cooling unit, a temperature rise in the cooling unit periphery is restrained by the heat insulation effect of the vacuum heat insulation material 32, and heat of the warm food is also conducted by the plate 34 of the construction material superior in heat conductivity, and since its heat can be quickly taken by the cold storage agent 35, a quality of the stored food can be held by restraining the temperature rise in the cooling unit periphery. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a refrigerator capable of cooling warm food.

  In recent years, the opportunity to store food in a frozen state has increased, and in particular, with regard to freezing rice, according to a survey, more than 80% of household freezing rooms are packed with rice wrapped in wraps or containers. However, the temperature of cooked or warm-cooked rice wrapped in wrap is about 80 ° C, and it is common to freeze it at room temperature for at least 80 minutes before it enters the freezer and at least until the temperature of the rice reaches room temperature. Met.

  As a conventional refrigerator that solves the above-described general refrigeration method, a refrigerator that is provided with a case having a cold storage tray having a cold storage body in a quenching chamber to perform freezing has been proposed (for example, see Patent Document 1).

  FIG. 7 shows the temperature of rice when frozen in a conventional refrigerator by a general freezing method, and FIGS. 8 and 9 show the conventional refrigerator described in Patent Document 1. FIG.

  In the figure, the solid line indicates the temperature of the rice, and the dotted line indicates the set temperature in the freezer compartment. Although the initial temperature of the rice was 90 ° C, it took about 170 minutes for the rice to cool to room temperature and reach a temperature of 25 ° C, then put it in the freezer and the temperature of the rice reached -20 ° C. It took more than an hour.

  1 is a refrigerated room, 2 is an ice (warm) room, 3 is a wine room, a vegetable / refrigerated room, a chilled room, a soft freezing room, a freezer room, a switching room, 4 is a vegetable room, 5 is a freezer room, 6 is a refrigerator handle, 7 is a temperature control unit, 8 is a cooler, and 9 is a fan. Each chamber is temperature-set by a temperature adjusting unit 7 installed on the upper portion of the handle 6 outside the door of the refrigerator compartment 1. In addition, the temperature control unit 7 can check the current temperature of each room, and how many minutes (how many hours) the quick freezing (rapid cooling) of each room is operated, or from what time to what time, etc. Can be set in the settings.

  FIG. 9 shows a cross-sectional view of the switching chamber of FIG. In the figure, 1 is a refrigerating room, 3 is a switching room, 3a is a case for storing food provided in the switching room 3, 3b is a cold storage tray provided on the floor of the switching room 3, 4 is a vegetable room, 12 is A suction port 15 provided at the lower back of the switching chamber 3, 15 is a warm food newly stored in the switching chamber 3, and 16 is a cooled food already stored in the switching chamber 3.

  Inside the switching chamber 3, a case 3a and a cold storage tray 3b are installed. Cooling air outlets 12b and 12a cooled by a cooler 8 and blown by a fan 9 are installed at the back and ceiling portions of the switching chamber 3, and the cooling air that has cooled the case 3a is sucked into the suction port 13 at the front of the case 3a. It is further configured to be discharged out of the case and returned to the cooler 8 from the suction port 14 at the lower back of the switching chamber 3.

When the warm food 15 is stored in the switching chamber 3 and the switching chamber 3 is rapidly cooled by the temperature adjusting unit 7, the cool air is sent from the outlet 12 to rapidly cool the food 15 from above, and further directly cooled by the cold storage tray 3b. Cooled by action. The cold storage tray 3b is indicated by a hatched portion, and the hatched portion contains a cold storage agent, and the outer shell is constituted by a tray made of metal such as aluminum.
JP 2001-147081 A

However, in the above-mentioned conventional configuration, quick freezing of warm food is proposed in the independent switching chamber 3, but this switching chamber 3 is not only a soft freezing chamber and a freezing chamber, but also a wine chamber, a vegetable / refrigeration chamber, a chilled chamber. It can be switched to a room. For this reason, for example, when wine is set in a wine room, vegetable / refrigerated room, chilled room, etc. and used for storing wine, vegetables, chilled food, etc., these stored foods are stored in other refrigerated rooms, vegetable rooms, etc. If you do not put warm food in the switching room after moving to a room suitable for food, if the stored food freezes, there will be dangers such as broken bottles and wasteful disposal due to freeze degeneration of vegetables, etc. It had the problem of end.

  Even when the soft freezing room and the freezing room are set, the switching room is a room used for storing and storing food. When food is stored, new food is placed on the surface of the cold storage tray 3b. In many cases, there is no space for storage, and when hot food is newly placed and quickly frozen, the temperature of the surrounding food rises, causing problems such as quality degradation due to temporary thawing. It was.

  Also, with the conventional method, it takes about 160 minutes to cool down to the room temperature that can be put in the freezer room, so the housework time becomes longer, and it may be forgotten. However, there were problems such as being uncomfortable and being restrained.

  In order to solve the above-described conventional problems, the refrigerator according to the present invention includes a refrigerator main body including a plurality of storage chambers and a plurality of doors closing front opening portions of the plurality of storage chambers. Among them, at least one is a freezing room, and the freezing room has a space for storing frozen food, a space for cooling hot food, and a space for cooling the warm food. And a temperature detecting means for detecting the temperature of the food stored therein in a non-contact manner, and a space capable of cooling the warm food is provided on the top side of the freezer compartment, and the warm food By providing a heat insulating material on the bottom side of the space where the food can be cooled, the temperature rise of the space in which the frozen food or the like is stored by storing warm food is suppressed.

  As a result, even if hot food is placed in a space where the hot food can be cooled, the heat insulation effect of the heat insulating material can suppress the temperature rise in the cabinet and adversely affect the frozen food in the freezer compartment. Because there is very little, you can put freshly cooked warm rice in a space where you can quickly cool warm food in the freezer compartment.

  The refrigerator of the present invention can provide a refrigerator that has very little adverse effect on the frozen food in the freezer even when the hot food is placed in a space that can cool the hot food in the freezer.

  In the refrigerator according to claim 1, the refrigerator main body includes a plurality of storage chambers and a plurality of doors for closing front opening portions of the plurality of storage chambers, and at least one of the plurality of storage chambers. One is a freezer compartment, and the freezer compartment contains a space in which frozen foods are stored, a space in which warm food can be cooled, and a food in the space in which the warm food can be cooled Temperature detecting means for detecting the temperature of the non-contact, etc., and a space capable of cooling the warm food is provided on the top surface side of the freezer compartment, and the warm food can be cooled. By providing a heat insulating material on the bottom side of the possible space, the temperature rise of the space in which the frozen food or the like is stored by storing warm food is suppressed.

  As a result, even if hot food is placed in the freezer compartment where the hot food can be cooled, it has very little adverse effect on the frozen food in the freezer. A warm food in the freezer compartment can be placed in a space where it can be cooled, and a refrigerator with very little adverse effect on the frozen food in the freezer compartment can be provided.

  In addition, by having a temperature detection means that detects the temperature of food stored in a space where hot food can be cooled in a non-contact manner, the temperature of the food can be easily adjusted according to the temperature of the food itself. It becomes possible to provide in a good temperature range.

  The invention according to claim 2 can rapidly cool the space in which the hot food can be cooled in addition to the invention according to claim 1, and cools the warm food detected by the temperature detecting means. The forced cooling is terminated when the temperature of the food itself stored in the space that can be reached reaches the target temperature.

  This allows hot foods to be quickly cooled or frozen and then held at any set temperature, providing foods in a quality state and at the optimum temperature for each purpose, such as the temperature at which they are eaten. It becomes possible to do.

  In addition to the invention described in claim 1 or 2, the space described in claim 3 is provided in a storage room in which the cool air cooled by the cooler is directly blown. Is.

  As a result, a large amount of cold air is sent to the space where the hot food can be cooled, and the hot food can be rapidly cooled and forcedly cooled.

  According to a fourth aspect of the present invention, the refrigerator main body is provided with a refrigeration chamber at the top, and the temperature in the space where the hot food can be cooled is confirmed on the surface portion of the door of the refrigeration chamber. Temperature display means is provided, and the temperature in the space where the current food can be cooled can be confirmed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of the refrigerator according to the embodiment, and FIG. 3 is according to the embodiment. The longitudinal cross-sectional view of a cooling unit is shown.

  In the figure, the refrigerator main body 17 is divided into a refrigerator compartment 18, a vegetable compartment 19, a switching compartment 20, and a freezer compartment 21 from the top. The top surface of the freezer compartment 21 is used for rapidly cooling food and the like. The cooling unit 22 is provided.

  For example, the cooling unit 22 has a bottom surface made of a material such as ABS having a width of about 300 mm, a depth of about 290 mm, and a height of about 50 mm. Note that the size of the cooling unit 22 greatly affects the menu for cooling cooking, and there may be cooling units of various materials or sizes depending on the purpose. Further, for example, a handle or the like may be attached in front of the cooling member so that the cooling unit 22 can be easily taken in and out.

  The cooling unit 22 is provided on the top surface of the freezer compartment, and a space in which the food in the freezer compartment is difficult to store can be used effectively.

  In addition, the top surface of the freezer compartment has a rail, and the cooling unit 22 has a frame that engages with the rail, and the cooling unit 22 can be moved in a pull-out manner by sliding the rail and the frame. Can improve usability.

  An operation panel 24 for selecting a menu for rapid cooling of food or the like is provided on the surface of the refrigerator compartment door 23 of the refrigerator compartment 18. The position of the operation panel 24 is not limited to the surface portion of the refrigerator compartment door 23. For example, the operation panel 24 may be provided on the surface portion of the freezer compartment door (not shown) or may be an independent remote control type. May be.

  In the refrigeration cycle for cooling the refrigerator, reference numeral 25 denotes a cooler. A blower 26 for forced ventilation is provided above the cooler 25 and behind the freezer compartment 21, and an air path control means 27 is provided behind the switching chamber 20. And a damper (not shown) that adjusts the amount of cold air supplied to the refrigerator compartment 18, vegetable compartment 19, switching compartment 20 and freezer compartment 21 inside the air passage control means 27. The cold air cooled by the cooler 25 is blown into the chambers by the blower 26 and the air path control means 27.

  The cooling member 22 provided on the top surface of the freezer compartment 21 is provided with a cold air outlet 28 for forced cooling. The cold air outlet 28 is provided opposite to the freezer compartment, and all the cold air is directly blown into the cooling member 22.

  The refrigeration cycle includes a compressor 29, a side condenser 30, and a capillary tube 31.

  As shown in FIG. 3, the cooling member 22 has a heat insulating material 32 and a cold storage agent 33 placed thereon, and an aluminum plate 34 is disposed on the cold storage agent 33. These cooling members are housed in the case 222.

  The heat insulating material 32 is a vacuum heat insulating material (hereinafter referred to as a vacuum heat insulating material 32), and includes a board-shaped core material, a skin material, and an adsorbent. The board-like core material is obtained by heat-compressing a fiber mainly composed of glass together with a binder, and a known material can be used for both the fiber and the binder. Further, the outer skin material only needs to have at least a gas barrier layer and a heat fusion layer, and a known material can be used. In the present embodiment, aluminum films are used for the outermost layers on both sides of the outer skin material, and the vacuum heat insulating material 32 is imparted with flame retardancy. In addition, a known material can be used as the adsorbent, and an adsorbent mainly composed of calcium oxide is used in this embodiment.

  The vacuum heat insulating material 32 is obtained by inserting a board-shaped core material and an adsorbent material into a skin material, and heat-welding after evacuation to keep the inside of the skin material in a vacuum. For this reason, compared with a normal heat insulating material, it has about 10 times the heat insulation performance, and a very high performance heat insulation characteristic can be obtained. The heat conductivity of the vacuum heat insulating material 32 of the present invention is 0.004 W / mK at an average temperature of 24 ° C., and the heat insulating property of the vacuum heat insulating material 32 necessary for securing the heat insulation and the storage space in the freezer compartment housing the cooling unit. The thickness is 3.5 mm. The required thickness can be arbitrarily set according to the space saving in the freezer compartment housing the cooling unit. Generally, a foam such as rigid urethane foam is used as the core material of the vacuum heat insulating material, but the heat insulating performance is inferior to the vacuum heat insulating material 32 of the present invention, and the strength against molding as a vacuum heat insulating material is high. Molding by bending or the like is impossible. In addition, since the cooling member is used in a kitchen or a table that uses fire for cooking, nonflammability is required. Therefore, the outer skin material of the vacuum heat insulating material 32 of the present invention is thick in the outermost layer of the laminate film configuration. A 50 μm thick aluminum foil is used to impart flame retardancy to the vacuum heat insulating material 32.

  In addition, since the vacuum heat insulating material is applied to an area of 30% or more of the pastable area of the cooling member 22, it is possible to increase the heat insulation of the cooling member 22 and to suppress the temperature rise in the freezer compartment and to prevent the food. Can be stored in high quality.

  The regenerator 33 has a thickness of 2.0 mm to 7.0 mm, for example, about 5 mm. In place of the cool storage agent, a metal having the same heat capacity as the cool storage agent, such as aluminum or stainless steel, may be used.

  When the cooling unit 22 is installed on the top of the freezer compartment, the top of the freezer compartment comes into close contact with the cooling unit 22 and can be used as a lid for the cooling unit 22.

  A food item 35 or the like is placed on the aluminum plate 34. A temperature detecting means 36 is provided on the top of the cooling unit 22.

  The temperature detecting means 36 is, for example, an infrared sensor and can detect the temperature of the food etc. 30 stored in the cooling unit 22 in a non-contact manner. The material of the aluminum plate 34 is not limited to aluminum as long as it has a good thermal conductivity.

  In FIG. 4, the operation panel 24 has a temperature setting means 37 and a temperature display means 38 so that the current temperature in the cooling unit 22 can be confirmed and the food etc. 35 stored in the cooling unit 22 is frozen. End temperature and storage temperature can be set freely. A cooling cooking menu button 39 is provided on the operation panel 24, and cooling cooking such as “hot frozen rice cake”, “handmade ice cream”, and “boiled vegetable cooling / frozen” can be selected.

  In addition, the end temperature is set for each cooling cooking according to each purpose, and the inside temperature is automatically held at the target temperature when the cooling is completed to the target temperature.

  The compressor 29 and the blower 26 are controlled to the set temperature based on the temperature of the food 35 or the like by the temperature detection means 36 and the information of the temperature setting means 37 and the temperature display means 38.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The refrigerator 29, the vegetable room 19, the switching room 20, and the freezer room 21 are operated by the compressor 29, the side condenser 30, the capillary tube 31, the cooler 25, the blower 26, and the air path control means 27 that constitute the refrigeration cycle. It is cooled to a predetermined temperature.

  When the cooling cooking menu button 39 on the operation panel 24 is selected, the compressor 29 operates at high speed and the blower 26 operates at high speed, and a large amount of cold air is forced into the cooling unit 22 from the cold air outlet 28 by the air path control means 27. Is used to rapidly cool or rapidly freeze the food 35 or the like placed on the cooling unit 22. The temperature of the food etc. 35 is detected by the temperature detecting means 36. When the temperature of the food etc. 35 reaches the target temperature, the forced cooling is terminated and the inside temperature is kept at the target temperature. It is operated while controlling.

  For example, when it is desired to quickly freeze the cooked rice, the cooked rice is warm at around 80 ° C., so the warm rice 35 is stored in the cooling unit 22 and the “Cooked Rice” is selected with the cooling cooking menu button 39 on the operation panel 24. Is selected, a large amount of cold air is sent from the cold air outlet 28 to rapidly cool the hot rice 35, and the temperature of the hot rice 35 is quickly transmitted to the cold storage agent 33 by the aluminum plate 34, and cooled by the direct cooling action by the cold storage agent 33. Is done. At this time, the product temperature of the warm rice 35 is detected by the temperature detection means 36, and is forcibly cooled until the product temperature of the warm rice 35 becomes -18 ° C or lower. Moreover, even if the heat storage agent 33 cannot take heat away and the temperature in the space 22 increases, the vacuum heat insulating material 32 suppresses the temperature increase in the freezer compartment 21. As shown by the solid line in FIG. 5, the temperature of the warm rice at this time is about 90 ° C., reaches 0 ° C. after about 40 minutes at a cooling rate of 2 ° C./minute, and reaches about 0.25 ° C./minute. The temperature reached −5 ° C. after about 60 minutes at the freezing rate, and reached −20 ° C. after about 80 minutes.

  Conventionally, when warm food is stored, the temperature in the freezer compartment rises and adversely affects the frozen food already stored, so the warm food is not immediately put into the freezer. For this reason, when freezing hot rice, it has been necessary to cool the hot rice until it reaches room temperature and then put it in the freezer. At that time, the temperature of the warm rice reaches about 25 ° C. after about 160 minutes at an initial temperature of about 90 ° C., enters the freezer compartment 21, and reaches 0 ° C. after about 180 minutes at a cooling rate of 0.4 ° C./min. And reached −5 ° C. after about 280 minutes at a freezing rate of about 0.05 ° C./min, and reached −20 ° C. after about 350 minutes.

  In this method, it takes about 160 minutes to cool down to a room temperature that can be put in the freezer room, so the housework time becomes longer, forgetting it, and the subsequent work remains mentally. There were problems such as being uncomfortable and being restrained. In addition, while the rice is slowly cooled, the water in the rice evaporates, and the texture of the rice deteriorates due to the drying of the surface portion, and deterioration such as wrinkles on the appearance is observed. In addition, since the time during which the rice is exposed to a high temperature becomes longer, deterioration such as yellowing of the rice due to the aminocarbonyl reaction is also observed.

  Also, when frozen, if the passing speed of the maximum ice crystal formation zone from 0 ° C to -5 ° C is slow, the volume of ice crystals formed in the food will increase and the cell membrane and cell wall will break, causing cell destruction and thawing However, there is a problem that the texture does not become elastic at the time, or the moisture inside the broken cells flows out to increase the amount of drip and the texture becomes worse.

  Further, in the above-described conventional configuration, a quick freezing of warm food is proposed in an independent switching room 3, but this switching room 3 is not only a soft freezing room and a freezing room, but also a wine room, a vegetable / refrigeration room, a chilled room. It can be switched to a room. For this reason, for example, when wine is set in a wine room, vegetable / refrigerated room, chilled room, etc. and used for storing wine, vegetables, chilled food, etc., these stored foods are stored in other refrigerated rooms, vegetable rooms, etc. If you do not put warm food in the switching room after moving to a room suitable for food, if the stored food freezes, there will be dangers such as broken bottles and wasteful disposal due to freeze degeneration of vegetables, etc. It had the problem of end.

  Even when the soft freezing room and the freezing room are set, the switching room is a room used for storing and storing food. When food is stored, new food is placed on the surface of the cold storage tray 3b. In many cases, there is no space for storage, and when hot food is newly placed and quickly frozen, the temperature of the surrounding food rises, causing problems such as quality degradation due to temporary thawing. It was.

  Moreover, it was a waste of storage space to always keep half the space of the cold storage tray 3b for quick freezing of warm food.

  In the method shown in the present embodiment, as compared with the conventional freezing of rice, it is possible to obtain the same deliciousness as freshly cooked after thawing, and there is a significant effect of reducing housework.

  In addition, warm food can be kept at an arbitrary set temperature after being rapidly cooled or frozen, so that the food is provided in a quality state and at the optimum temperature for each purpose such as the temperature at which it is eaten. It became possible.

  In the case where the warm food is freshly cooked rice, for example, the electricity bill can be greatly reduced as compared to the case where the jar cooked in the evening is kept warm until morning. In addition, since the evaporation of moisture that occurs during the process of cooling the temperature of the rice is suppressed, it is possible to reproduce the deliciousness of the freshly cooked rice that is plump when thawed.

  Further, when “handmade ice cream” of the cooling cooking menu button 39 is selected, an ice cream or a sherbet that has been troublesome in the freezer compartment 21 can be easily made. For example, the ingredients such as milk, fresh cream, sugar, and eggs that are heated and heated while being melted with sugar are put into a pudding cup and the like are put into the cooling unit 22, and the cooling cooking menu on the operation panel 24 is added. When “handmade ice cream” is selected with the button 39, a large amount of cold air is sent from the cold air outlet 28 to rapidly cool the ice cream 35 put in the pudding cup, and the temperature of the ice cream 35 is quickly cooled by the aluminum plate 34. 33 and is cooled by a direct cooling action by the regenerator 33. The initial temperature of the stock ice cream solution is about 60 ° C., but it can be quickly put into the space.

  At this time, the product temperature of the ice cream 35 is detected by the temperature detecting means 36, and the ice cream 35 is forcibly cooled until the product temperature of the ice cream 35 is equal to or less than −12 ° C., which is the temperature around eating. Ice cream can be eaten deliciously at -12 ° C with good hardness. When the temperature detecting means 36 detects that the product temperature of the ice cream 35 is −12 ° C., the forced cooling is finished, and the fact that the ice cream has been made is displayed by a method such as displaying an alarm sound or a display panel. I will inform you.

  As a result, you can eat delicious homemade ice cream after about 1 hour. For example, if you set up ice cream after you have finished eating lunch, you will have homemade ice cream in the snack time. It is also possible to feed children with delicious homemade ice cream.

  In addition, after the ice cream has been frozen and forced cooling is completed, the space 22 is maintained at -12 ° C, which is the temperature at which ice cream is eaten, so it can be served at any time even if it is not eaten immediately. can do.

  Conventionally, ingredients such as milk, fresh cream, sugar, and eggs are heated and mixed while warming, cool at room temperature, and then put in the freezer. Therefore, it is necessary to take out from the freezer several times and stir, and the creation time of the ice cream is 12 hours or more. If a great effort and time are not spent, the handmade ice cream cannot be made delicious.

  Moreover, since the normal freezer compartment was set to -18 degrees C or less, the product temperature of ice cream became -18 degrees C or less, and it was not able to eat immediately with the tick.

  As a result, the ice cream preparation time can be significantly shortened compared to the conventional method, and the taste is improved.

  In addition, the cooling unit can be removed and used anywhere in the house, including the kitchen, dining table, and bedroom.

  In the past, it was not possible to place freshly boiled hot tea or stew in a refrigerator set in a refrigerated temperature zone because it adversely affects other foods.

  When moving to a refrigerator set in a refrigerated temperature zone and using it, for example, freshly boiled hot tea or stew immediately after cooking in a case set in a refrigerator set in a refrigerated temperature zone You can put it on, so you can save time. Conventionally, hot tea is often cooled at room temperature or with running water, and in the latter running water cooling, it takes about 24 minutes for the hot tea to cool to about 40 ° C. It was hanging. However, when hot tea is placed in the case, it is cooled to 40 ° C. in about 15 minutes, so that the tea server can be quickly and quickly cooled without getting wet. In addition, by reducing the time during which tea is exposed to high temperatures, it is possible to suppress discoloration of tea pigments, for example, green tea can be used to produce cool green tea with a beautiful green color. This prevents damage and increases the retention of nutrients.

  Also, conventionally, when a stew pan immediately after cooking is cooled at room temperature, the temperature of the pan immediately after cooking was about 85 ° C, but it took 193 minutes to cool to a skin temperature of about 40 ° C. However, when it is placed on the case, it can be cooled to 40 ° C. in about 55 minutes, so that the time can be reduced by about 75% compared to the conventional case. Moreover, by opening the lid of the stew pan and stirring about once every 5 minutes, it can be cooled to 40 ° C. in about 17 minutes, and a significant time reduction can be expected.

  Also, conventionally, when stirring fresh cream, it was common to stir fresh cream with a bowl of ice placed under a bowl containing fresh cream, but when there is no ice stock Took a lot of time and effort, such as awkward stirring and use of two balls, which increased wasteful washing, but when a bowl of fresh cream was placed on the case and stirred, it was easy to use Good, can stir fresh cream.

  In addition, ice is often used to cool sashimi, raw noodles, chilled Chinese food, cold noodles, juice, etc., which are delicious, but this method sometimes melts the ice and gives it a watery taste. In addition, by using a case, it can be kept cool at 7 ° C. or less for 219 minutes without becoming watery and can exhibit an excellent cooling ability.

  As described above, until now there was only a space to cool in the refrigerator, but the cooling unit has a cool and cool capacity of 5 hours or more without being submerged with condensed water, making it possible to create an energy-saving cooling space in the house. It can be made anywhere.

(Embodiment 2)
FIG. 6 shows a longitudinal sectional view of the cooling unit according to the second embodiment of the present invention.

  As shown in the figure, the cooling unit includes a cooling member 122 and a case 222, and the cooling member 122 has a cold storage agent 133 covered with a plate 134 made of aluminum on a heat insulating material 132 (vacuum heat insulating material 132). On the case 222, a vacuum heat insulating material 132 and a cold storage agent 133 covered with a plate 134 made of aluminum are sequentially placed.

  The operation of the cooling unit configured as described above will be described below.

  Since the cooling member of the present embodiment covers the cool storage agent 133 with the aluminum plate 134, the cool storage agent 133 is covered with the aluminum plate 134 over the entire surface as compared with the cooling unit described in the first embodiment. Therefore, even if the solid regenerator is melted and deformed, the aluminum plate 134 can be prevented from changing its shape without being deformed, and the shape of the cooling member can be prevented. The retention of 135 is also excellent.

  In addition, since the cold storage agent 133 is covered with the aluminum plate 134, for example, when it is desired to freeze the cold storage agent quickly, the heat transfer property of the aluminum plate 134 is very good. By putting the agent 133 in the freezer, the cool storage agent 133 can be frozen in a time earlier than freezing the cool storage agent 133 as it is.

  As described above, the refrigerator according to the present invention can store hot foods directly in the cooling unit by providing the cooling unit composed of the vacuum heat insulating material and the cold storage agent in the refrigerator set in the freezing temperature zone. In addition, by reducing the thickness of the cooling unit, it is possible to save space in the freezer compartment. This technique can be applied to uses other than refrigerators, for example, for cooling various spaces, spaces, and objects such as kitchens, dining tables, underfloor storage, and bedrooms.

The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention Perspective view of the refrigeration cycle piping of the refrigerator of the same embodiment Vertical sectional view of the cooling unit of the embodiment The figure which shows the operation panel of the refrigerator of the embodiment Characteristic diagram showing temperature change during freezing and change in freezing set temperature of conventional food of the embodiment The longitudinal cross-sectional view of the cooling unit in Embodiment 2 of this invention Characteristic diagram showing changes in temperature and freezing set temperature during freezing of conventional food Front view of a conventional refrigerator Cross-sectional view of a conventional refrigerator switching chamber

Explanation of symbols

17 Refrigerator 21 Freezer compartment 22 Cooling unit 23 Refrigerating compartment door 24 Operation panel 28 Cold air outlet 32 Vacuum heat insulating material (heat insulating material)
33 Cold storage agent 34 Plate 36 Temperature detection means

Claims (4)

  The refrigerator main body includes a plurality of storage chambers and a plurality of doors closing front opening portions of the plurality of storage chambers, and at least one of the plurality of storage chambers is a freezer compartment, and the freezer compartment Is a temperature for detecting non-contact temperature of a space for storing frozen food, a space for cooling warm food, and food stored in the space for cooling warm food And a space capable of cooling the warm food is provided on the top side of the freezer compartment, and a heat insulating material is provided on the bottom side of the space capable of cooling the warm food. The refrigerator which suppresses the temperature rise of the space in which the said frozen food etc. are accommodated by storing warm food.   The space where the hot food can be cooled can be rapidly cooled, and the temperature of the food stored in the space where the warm food detected by the temperature detecting means can be cooled to the target temperature. The refrigerator according to claim 1, wherein forced cooling is terminated when it reaches.   The refrigerator according to claim 1 or 2, wherein the space in which the hot food can be cooled is provided in a storage room in which cold air cooled by a cooler is directly blown.   The refrigerator main body is provided with a refrigeration room at the top, and a temperature display means is provided on the surface of the door of the refrigeration room for checking the temperature in a space where hot food can be cooled. The refrigerator according to any one of claims 1 to 3.