JP2012026691A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator having a cooling accelerating member achieved in lower freezing speed and favorable heating.SOLUTION: The refrigerator includes: a refrigerator body 102 having a storage compartment which is insulated and partitioned; a container 127 for storing food in the storage compartment; a cold storage material 150 attached to the container; an attachable and detachable tray 261 installed on the cold storage material 150; and a cooling means for cooling the storage compartment. On the upper face of the tray 261, a material which absorbs a microwave and generates heat is deposited, and thus, by the cold storage material 150 and the tray 261, the speed of directly cooling the stored food is improved, and the thawing and warming of the food can be performed uniformly without unevenness by warming by the microwave.

Description

  The present invention relates to a refrigerator having a cold storage function capable of efficiently cooling or heating food.

  In recent refrigerators, as an invention aimed at improving the freezing speed of frozen stored food, a metal tray is provided at the bottom of the container in the freezer compartment, and cooling air is passed through the duct provided at the bottom of the container below the metal tray. There is an example in which the freezing time is shortened (see, for example, Patent Document 1).

  FIG. 4 is a side sectional view of an essential part showing an embodiment of a conventional refrigerator described in Patent Document 1. As shown in FIG. As shown in FIG. 4, the freezer compartment 3, which is a part of the storage compartment of the refrigerator main body 2 composed of the heat insulation box 1, has a temperature zone with an upper heat insulation partition 4 on the top and a lower heat insulation partition 5 on the bottom. Different refrigerator compartment 6 and vegetable compartment 7 are divided. In addition, a partition 8 is provided between the left and right of the opening of the freezer compartment 3 to divide the opening vertically.

  The cool air generating chamber 9 provided on the back side of the freezer compartment 3 is provided with an evaporator 10 for generating cool air, and a blower 11 for supplying and circulating the cool air to the refrigerator compartment 6, the freezer compartment 3, and the vegetable compartment 7, and an evaporator. A defrosting heater 12 that is turned on at the time of defrosting is disposed in the lower space 10.

  Both the door 13 and the lower door 14 are doors of the drawer-type freezer compartment 3, and a container 17 and a lower container 18 supported by frame bodies 15 and 16 are integrally provided behind the door 13 and the freezer compartment 8. A cool air distribution chamber 19 that distributes the cool air generated by the evaporator 10 to the respective chambers is provided at the rear, and a plurality of cool air supply ports are formed on the front surface thereof.

  In addition, a tray 20 is provided at the bottoms of the container 17 and the lower container 18 in the freezer compartment 3, and in each container 17 and the lower container 18, cold air passages 17a and 18a are formed between the front and back of the bottom part. ing.

  Furthermore, in addition to the front side of the cool air distribution chamber 19, the lower container 18, the cool air supply ports 19 a and 19 b directed toward the upper opening surface of the lower container 18, and the cool air supply port 19 c corresponding to the cool air passage 17 a of the container 17. A cool air supply port 19d corresponding to the cool air passage 18a is provided. Therefore, not only the container 17 but also the lower container 18 can be directly circulated from the cold air distribution chamber 19 to the cold air passage 18a, thereby increasing the food cooling speed.

  In this way, the trays 20 in the container 17 and the lower container 18 are quickly cooled, and the cold air is also supplied to the upper opening surfaces of the respective containers, thereby cooling the food in the containers from above and below. In other words, the food can be frozen in a short time.

JP 2000-304435 A

However, in the above-described conventional configuration, when food before freezing is put into the tray 20, particularly when food with a high temperature is put in, the tray 20 does not have a cold storage function, so the tray 20 is immediately raised. The food itself is cooled, but the other food is heated by the heat through the tray 20, and the surface of the stored food that has been frozen is melted or the activity is suppressed. There is concern that some of them may breed. In particular, when the degree of melting of the surface of the stored food is large, there is a concern that the quality deterioration will be severe when refreezing. Further, when the cooling is started, the tray 20 that has been heated up needs to cool the food at the same time as the food is cooled, and the cooling speed of the food is slowed down, so that the quality of the frozen product is lowered. In addition, since the tray 20 is made of metal, the tray 20 on which the food is placed cannot be heated and thawed as it is in a microwave oven, which is inconvenient. As described above, in the conventional configuration, there is a problem that the suppression of heat interference with other foods and the rapid cooling of the input foods are compatible, and the microwave oven cannot be used.

  The present invention solves the above-mentioned conventional problems, suppresses the temperature rise at the time of food addition, maintains the effect of shortening the freezing rate while ensuring the preservation quality of the stored food, and efficiently warms and thaws even in a microwave oven. The purpose is to provide a refrigerator that achieves this.

  In order to solve the above-described conventional problems, the refrigerator of the present invention has a refrigerator body having a storage compartment partitioned by heat, a container for storing food in the storage compartment, and a cold storage function attached to the container. A cooling promoting member, a detachable tray installed on the cooling promoting member, and a cooling means for cooling the storage chamber. The tray is formed by depositing a material that absorbs microwaves on the upper surface. It is what.

  As a result, even when food with a high temperature is introduced, the temperature increase in the container can be minimized due to the heat capacity of the cooling promotion member, and the temperature increase in the direct contact portion is small, so the cooling promotion member Thus, the speed improvement effect of directly cooling the stored food can be maintained. In addition, even when the cooling promoting member is heated due to the addition of food, the recooling time can be shortened by having a plurality of cooling means.

  In addition, the tray can be removed, frozen food can be moved while placed on the tray, it can be heated and thawed in a microwave oven, and the material that absorbs microwaves generates heat, so it can be warmed from below and from above Thawing and warming can be performed uniformly from above and below by heating with microwaves.

  According to the present invention, there is provided a refrigerator that suppresses the temperature rise at the time of food input, maintains the effect of shortening the freezing rate while ensuring the preservation quality of stored food, and realizes efficient heating and thawing even in a microwave oven. be able to.

Side surface sectional drawing of the principal part of the refrigerator in Embodiment 1 of this invention Side surface sectional drawing of the cool storage material in Embodiment 1 of this invention Side surface sectional drawing of the microwave oven in Embodiment 2 of this invention Side sectional view of main parts showing an embodiment of a conventional refrigerator

Invention of Claim 1 has the refrigerator main body which has the storage chamber by which heat insulation division was carried out, the container for accommodating a foodstuff in the said storage chamber, the cooling promotion member which has the cool storage function attached to the said container, A detachable tray installed on the cooling promoting member and a cooling means for cooling the storage chamber, wherein the tray is formed by vapor-depositing a material that absorbs microwaves on the upper surface, and the temperature Even when high-quality foods are introduced, the heat capacity of the cooling promotion member that has a cold storage function minimizes the temperature rise in the container and the cooling promotion member, and metal is deposited on the food contact surface to conduct heat. The cooling acceleration member that has been heated up can be quickly cooled, so that the effect of shortening the freezing speed of the stored food can be maintained for a long time. It can be carried out without unevenness uniformly thawed and warmed from above and below by warming by microwaves from above O warmed from below by absorbing material generates heat.

  According to a second aspect of the present invention, in the first aspect of the invention, the cooling promoting member has a tray placement portion for placing a tray, and a convex portion is provided on the upper side in the vertical direction with respect to the tray placement portion. It is possible to eliminate the air layer on the contact surface between the cold storage material and the outer frame by providing a bubble reservoir in the convex portion on the upper side in the vertical direction than the tray placement portion, Since the heat conduction efficiency to the cold storage material when food is placed can be improved, the freezing speed of the food can be improved.

  Invention of Claim 3 is suitable for the temperature in a refrigerator in the invention of Claim 1 or 2, since the temperature of a contact surface with food can be arbitrarily set because a cooling promotion member is a cool storage material. It is possible to set up a direct cooling surface with high heat conduction efficiency to food.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the material that generates heat by absorbing the microwave is ferrite, so that when heating in a microwave oven, the ferrite The bottom surface of the food in contact with the heat is heated by dielectric heating, and the top surface of the food not in contact with the ferrite is warmed by microwaves, so that it can be efficiently heated from above and below. In addition, although ferrite is a metal, it is vapor deposited on the tray, so that it is possible to avoid a spark because the ferrite is in a floating state even when placed in a microwave oven. Moreover, since it is a metal, heat conduction efficiency is good and can improve the freezing speed of food.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the material that absorbs microwaves and generates heat is tin oxide, so that when heated in a microwave oven, oxidation occurs. The bottom surface of food that comes into contact with tin is warmed by dielectric heating, and the top surface of food that does not come into contact with tin oxide is warmed by microwaves, so that it can be efficiently heated from above and below. In addition, although tin oxide is a metal, it is vapor deposited on the tray, so that spark can be avoided because tin oxide is in a floating state even when placed in a microwave oven. Moreover, since it is a metal, heat conduction efficiency is good and can improve the freezing speed of food.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a side cross-sectional view of a main part of a refrigerator according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view of a cold storage material according to Embodiment 1 of the present invention.

  As shown in the figure, a cold storage material 150 that is a cooling promoting member having a cold storage function is provided on the door 121 side at the inner bottom of a container 127 located in the upper stage of the freezer compartment 108. Moreover, the protrusion part 156 which is a fixing means which prevents that the cool storage material 150 moves with opening and closing of a door is provided, and the protrusion part 156 prevents the movement to the front-back direction which is the opening / closing direction of the door 121. Therefore, it is formed so that the left-right direction, which is perpendicular to the opening / closing direction of the door 121, is the longitudinal direction.

The resin case, which is an outer container of the regenerator material 150, has a relatively flat tray installation surface 259 on which the tray 261 is installed, a removable tray 261 on the tray installation surface 259, and a tray installed around the tray installation surface 259. An absorption part 260 having a bubble reservoir made up of a convex part protruding upward in a form surrounding the surface 259 is provided, and the absorption part 260 of the food holding means for suppressing the movement of the food placed on the tray 261 is provided. It has a function. In addition, a metal that absorbs microwaves and generates heat, such as ferrite, is deposited on the food placement surface 262 of the tray 261, so that when the food is placed on the tray 261, the heat conduction efficiency is improved.
Further, a non-contact detection means 280 such as an infrared sensor is provided on the wall surface facing the food placement portion, and this non-contact detection means is provided in the central portion of the food placement surface.
Even when the food is moved by opening and closing the drawer, the internal space of the absorption unit 260 that is a food holding unit that holds the food so as to be positioned on the food placing unit is located in a portion where the gas 258 exists in the upper bubble reservoir, Even when the material 150 is inclined by 5 °, a large volume of the gas 258 ensures a capacity that can be stored in the absorption portion 260. As a result, when the cold storage material 150 is horizontally installed and frozen at an inclination within 5 ° with respect to the horizontal direction, the gas 258 does not exist under the tray installation surface 259 and almost the entire surface is filled with the cold storage material 257. Has been.

  Thus, in this Embodiment, it is set as the rational structure which formed the food holding means using the part of the gas 258 which can be made inside the cool storage material 150 at the time of forming a food holding means.

  Further, the bubble reservoir has a function of food holding means for holding the food so as not to deviate from the tray 261, and is installed on all four sides so as to surround the tray installation surface 259. Since the holding means is continuously provided over the entire outer periphery of the tray installation surface 259, even if the food is slippery, even if the food slides in multiple directions as the drawer door opens and closes, Since food holding means are formed on all four sides of the food placement section, movement of the food itself due to sliding can be suppressed, and the heat of the input food can be efficiently stored even if there is a reaction due to opening and closing of the door etc. It is possible to reduce the cooling time at the time of food addition.

In addition, the tray 261 is detachable, and has two attachment / detachment assisting portions not shown in the figure formed by recesses so that a user's finger can be inserted when the tray 261 is attached / detached. The attachment / detachment assisting portion has a size that allows a user's finger to enter, so that the tray 261 can be easily removed, thereby improving usability during attachment / detachment.
Further, in this embodiment, the attachment / detachment assisting portion, which is a portion into which the user's finger enters, is installed so as to be positioned on the left and right when the user opens the storage chamber provided with the tray 261. That is, the operation is smooth and easy to take out regardless of whether the right-handed user or the left-handed user attaches or detaches the tray 261.

  In addition, since the line BB ′ connecting the two tray attachment / detachment auxiliary portions passes through the center line in the left-right direction of the tray 261, the weight of the cold storage material can be attached / detached almost without being biased left and right. It becomes possible to give a smoother feeling to the user.

  The cool air discharge ports 153b and 153c are discharge ports through which cool air for cooling the freezer compartment 108 is discharged, and are arranged above and below the cold storage material. The freezer compartment outlet 154 is an outlet through which the cool air after cooling the freezer compartment 108 returns from the freezer compartment 108 to the evaporator 113. The supply duct 155 is a duct through which cool air for cooling the refrigerator compartment 107 is ventilated.

  The regenerator material 150 is installed at the bottom of the container 127, the front surface of the regenerator material 150 is disposed so as to contact the front inner surface on the door 121 side of the container 127, and the rear surface of the regenerator material 150 protrudes from the bottom of the container 127. The cold storage material is fixed so as not to move in the front-rear direction by being disposed in contact with the front surface of the protruding portion 256 which is a fixing means for preventing the cool storage material from moving in the front-rear direction.

Further, the regenerator material 150 includes a regenerator material 257 and a gas 258 in a sealed resin case. The gas 258 is air. The resin case is a blow molded product of polyethylene resin having outer dimensions of 300 mm in width, 300 mm in depth, 20 mm in height, and 1.5 mm in thickness. The cold storage material 257 is a material having a latent heat at −15 ° C., which is lower than the freezing temperature of a general frozen food, lower than the maximum ice crystal formation zone temperature, and higher than the temperature of the freezing chamber 108, and the filling amount is The amount of heat corresponding to the volume of food installed on the upper surface, for example, the amount of heat having a latent heat amount corresponding to the sum of the latent heat amount and the sensible heat amount from 30 ° C. to −10 ° C. is retained. That is, when the cold storage material 150 is frozen, it does not completely melt at the time of general food input in normal use.

  The container 127 includes a storage unit 263 that is a normal storage space, that is, a freezing region, behind the projecting unit 256.

  In the container 127, frozen food 157 that has already been stored and input food 158 that has been newly input are placed.

  In this way, a freezing area for storing the frozen food 157 that has already been stored is formed on the rear side of the refrigerator, which is the upstream side of the air path of the cold air flowing from the cold air discharge ports 153b and 153c, and the refrigerator that is on the downstream side On the front side, a food placement unit on which newly introduced food 158 is placed is located.

  In addition, cold air supply and circulation for cooling the refrigerator compartment 107 and the vegetable compartment 109 are not shown, but are independent of the cold air supply air path that cools the storage chamber that is provided with a cold storage material and can be set in a freezing temperature zone. Since another air path is formed, a large amount of cold air, for example, by performing quick freezing does not directly flow into another storage room.

  About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below.

  The cold storage material 150 and the frozen food 157 that are the cooling promoting members are cooled to -20 ° C. that is the predetermined temperature of the freezer compartment 108 and frozen by the cold air flowing from the cold air discharge ports 153b and 153c that are the cooling means. As shown in the figure, when the door 121 is opened and the input food 158 having a temperature of 5 ° C. corresponding to the refrigeration temperature is placed on the food placement surface 262 of the cold storage material 150 serving as the input food placement section, the input food immediately after the addition. In 158, heat is taken from the metal deposited on the surface of the food placing surface 262 and the regenerator material 150 frozen at −20 ° C. under the tray 261 to start cooling. At this time, when the heat load of the input food 158 is large, the cold storage material 150 is heated from -20 ° C., which is a sensible heat region, to −15 ° C. due to heat absorption, and the temperature difference from the input food 158 is −15 ° C. A part melts while keeping.

  Furthermore, the outside air that has flowed into the container 127 is also cooled by the cold storage material 150, and the air in the container 127 is kept at a lower temperature than before, and the input food 158 is also cooled by the low-temperature air. At this time, the cold storage material 257 of the cold storage material 150 is heated from -20 ° C., which is a sensible heat region, to -15 ° C. due to heat absorption, and exchanges heat with the input food 158 and inflowing outside air at −15 ° C. in the latent heat region. Some melt while maintaining a moderate temperature difference. In such a case, if it is not a latent heat type cold storage material, the temperature difference becomes smaller as the heat exchange proceeds due to the temperature rise of the cold storage material in addition to lowering the temperature by cooling the input food 158, and the input food 158 is cooled to a predetermined temperature. Although it takes time to do this, in this embodiment, since the cold storage material 150 has a latent heat temperature of −15 ° C., heat exchange is performed up to about −10 ° C., which is the maximum ice crystal formation zone related to the frozen quality of the input food 158. When this is done, a large temperature difference can be secured and the maximum ice crystal formation zone can be passed quickly. Furthermore, since the latent heat temperature is about 5 ° C. higher than the freezer temperature, a heat exchange temperature difference necessary for freezing the cold storage material 150 can be secured.

In addition, when the door 121 is opened and there is a frozen food 157 previously stored, the cold storage material 150 located in front cools the outside air flowing into the container 127, and the surroundings of the frozen food 157 are compared to the conventional case. And kept at a low temperature. Furthermore, the temperature rise due to the heat interference from the input food 158 is greatly suppressed as compared with the case where there is no cold storage material.

  Thereafter, as shown in the figure, when the door 121 is closed, the temperature of the input food 158 is detected by the non-contact detection means 280 such as an infrared sensor, and if the food higher than the storage room temperature is detected, it is rapidly detected. It is determined that refrigeration is to be performed, operation of a refrigeration cycle (not shown) is started, refrigerant flows through the evaporator 113 and cold air is generated, and at the same time, the blower 114 is operated and cold air is circulated so that rapid cooling is performed. It starts automatically. Thus, in this Embodiment, after detecting the temperature of the input food 158 with the non-contact detection means 280, a quick freezing operation is started automatically.

  As a result, the cold air is supplied from the cold air discharge ports 153b and 153c to the freezing chamber 108 with the low-temperature cold air cooled by the evaporator 113, and rapidly cools the frozen food 157 and the input food 158 both vertically. At this time, the input food 158 is cooled by both the cool air that is ventilated, the metal on the food placement surface 262, and the indirect cooling by the heat transfer from the cold air by the direct cooling by the heat conduction from the cold storage material 150. As a result, when the food 158 having a relatively high temperature is input, the quick freezing operation is automatically and promptly performed, so that the user can quickly and reliably perform the quick freezing operation. Freezing at a reasonable speed can be realized.

  In addition, since the quick food freezing operation is quickly started and the food placing part 158 into which the input food 158 having the cold storage material is placed is located downstream of the cold air blown out from the freezer discharge ports 153a and 153b, It is possible to prevent the temperature effect on the frozen food 157 stored in the upstream storage unit 263 in advance, and as a result, the temperature of the entire container 27 in the freezer compartment and the temperature of the frozen food in the lower container rise. Therefore, it is possible to quickly reduce the refrigeration load of the entire refrigerator by concentrating the high temperature input food 158 and cooling it with both the cold storage material 150 and low temperature cold air, and realize high-quality frozen storage with energy saving. It becomes.

  In addition, normally, cold storage air in the freezing temperature zone is always discharged at low temperatures, and even when the freezing room is sufficiently cooled, low temperature cold air may flow, Even in such a case, since the amount of load to be excessively cooled can be stored in the cold storage material as it is, it is possible to realize a more energy-saving freezer in the freezer.

  A small amount of cold air is also used for cooling the regenerator material 150. However, since the cooling of the freezer compartment 108 is cooled when it is higher than the predetermined temperature of −20 ° C., if the cold storage material 150 is frozen when it is first put in, then the latent heat temperature of the cold storage material 150 is −15 ° C. The temperature difference is small and cold air is mainly used for cooling food. Further, the cool air is ventilated into the container 27 by a ventilation structure (not shown). At this time, the input food 158 is mainly cooled because the input food 158 is placed on the food placement surface 262 of the tray 261 which is the input food placement unit.

  Here, the closer the input food 158 is to −15 ° C., which is the latent heat temperature of the regenerator material 150, the more weight the cold air is used to cool the regenerator material 150. For example, the frozen food 157 and the input food 158 are fish or In the case of meat, the freezing temperature is around 0 ° C. and the maximum ice crystal formation zone is often up to −10 ° C. Therefore, in this temperature zone, most of the cold air is concentrated mainly on the input food 158 and cooled. In addition to the cooling by the direct cooling by the heat conduction from the metal of the food placing surface 262 and the cold storage material 150, the maximum ice crystal formation zone passes quickly.

Moreover, when the container 127 goes out of the refrigerator main body 102 and the cold storage material 150 is exposed to the outside air as in the case where the door 121 is opened, the inside of the container 127 is cooled by the cold storage material 150 and stored. The temperature rise is suppressed, and the input food 158 and the outside air that has flowed in are cooled by the cold storage material 150 and frozen in a short time.

  Further, a part of the moisture in the outside air accompanying the inflow of outside air when the door 121 is opened and closed is condensed or frosted on the cold storage material 150. When the time until the opening and closing of the next door 121 is long, it is sublimated or evaporated by the cooling air circulating in the cooling operation and removed from the surface of the regenerator material 150, and the humid air is defrosted and dehumidified by the evaporator 113. Water and frost adhering to the surface of the cool storage material 150 are removed by the circulation of the cooling air during the cooling operation in which the low temperature air is circulated again and flows around the cool storage material 150 to remove the moisture of the cool storage material 150.

  However, when the next door 121 is opened and closed in a short time, that is, with the moisture and frost adhering to the cool storage material 150 from the previous opening and closing of the door 121 remaining, the door 121 is opened and food is added. In particular, when the input food is relatively low in temperature, when the input food 158 is input and the door 121 is closed, the reaction of the input food 158 easily slides on the food placement surface 262.

  In addition, after that, moisture existing between the food and the food placing surface 262, that is, frost and ice are difficult to flow through the cooling air, so that sublimation and evaporation are difficult to be performed, and the moisture remains again. When the door 121 is opened, there is a possibility that the food slips even in the reaction. In this way, even if the door 121 is opened or closed randomly or by an operation that is frequently performed, the cold storage material 150 can be fixed by a fixing means even if the frozen food 157 or the input food 158 slides behind the container 127 and moves. Since it is being fixed by the protrusion part 156 of a certain container 127, it does not move.

  Further, the protrusion 156, which is a fixing means for preventing the regenerator material 150 from moving when the door is opened and closed, is intended to prevent the door 121 from moving in the front-rear direction, which is the opening and closing direction of the door 121. Since it is formed so that the left-right direction, which is perpendicular to the direction, is the longitudinal direction, the movement of the regenerator material 150 accompanying the opening and closing of the door 121 can be more reliably suppressed.

  Further, since the frozen food 157 and the input food 158 hit the absorbing portion 260 from which the cold storage material 150 protrudes, the frozen food 157 and the input food 158 can be prevented from moving from the tray installation surface 259 to the rear storage unit 263 and are smoothly cooled on the tray installation surface 259. Therefore, the input food 158 can be rapidly cooled more reliably.

  Furthermore, a non-contact detection means 280 such as an infrared sensor is provided on the wall surface facing the food placement surface 262, and this non-contact detection means is provided in the central portion of the food placement surface. That is, the non-contact detection means 280 is located anywhere on the projection surface in the vertical direction of the center line BB ′.

  Even if the input food 158 moves due to the inertial force associated with the closing of the drawer, it is assumed that the input food 158 moves further forward, so that the input food 158 falls within the accurate detection range of the non-contact detection means 280. Therefore, the temperature of the input food 158 can be detected with higher accuracy, and the accuracy of quick rapid cooling can be improved.

  As described above, the forward movement of the frozen food 157 and the input food 158 is prevented by the front wall of the container 127. Therefore, the movement of the frozen food 157 and the input food 158 due to sliding can be suppressed, and the heat of the frozen food 157 and the input food 158 can be efficiently transferred to the metal on the food placement surface 262 even if there is a reaction due to the opening / closing of the door 121 or the like. Heat is absorbed by the regenerator material 150, and the temperature rise can be suppressed and the cooling time can be shortened when the food is added.

In this embodiment, the attachment / detachment assisting part, which is a part into which the user's finger enters, is installed so as to be positioned on the left and right sides when the user opens the storage room provided with the tray 261. That is, since the attachment / detachment assisting part is formed on the left and right sides of the storage room, the right / left-handed user has a smoother and easier operation when attaching / detaching the tray 261 and can be used more easily. It is possible to provide a detachable tray 261 that realizes a universal design considering user convenience.

  Furthermore, in the present embodiment, when the food 158 having a relatively high temperature is introduced, the quick freezing operation can be performed automatically and quickly, so that the cooling speed of the input food can be improved more reliably. The temperature of the surrounding frozen food 157 stored in advance can be prevented, and as a result, the temperature of the entire container 127 of the freezer compartment is prevented from affecting other parts. It is possible to reduce the refrigeration load of the whole refrigerator quickly and to realize high-quality frozen storage with energy saving by cooling with both the metal of the food placement surface 262, the cold storage material 150 and the low-temperature cold air. Become.

  In addition, in the present embodiment, since conventional quick freezing is quick freezing for about 150 minutes regardless of food temperature, power consumption is increased by performing quick freezing more than necessary. However, in the present invention, after the food is added, the food is frozen at about three times the speed of the conventional freezing, the food temperature is detected by an infrared sensor, and the central temperature at which the food does not easily deteriorate is −10 ° C. After reaching, quick freezing was stopped and returned to normal freezing, so that necessary quick freezing was possible without deterioration of food and energy saving was made possible.

  Therefore, by setting the end of automatic quick freezing to −10 ° C. and setting a temperature higher than the normal freezing temperature range, it is possible to perform automatic quick freezing with more energy saving while maintaining the freezing quality. The -10 ° C is about 10 ° C higher than -20 ° C, which is the central temperature of the normal freezing temperature zone.

  Thus, in the past, refrigerators already had a quick-freezing function, but the frequency of use was low. The reason for this was that the customer had to start the quick-freezing and that the quick-freezing function itself Although it was mentioned that its existence was unknown, according to the present invention, it is possible to automatically activate the quick freezing function without the need for a start operation by the customer, so that cooling can be performed more quickly with energy saving. It became.

  In addition, the conventional quick-freezing time was approximately constant or cooled to the set temperature of the storage room, so that excessive power consumption was caused by excessive cooling even though the food was frozen. However, in the present invention, by providing an infrared sensor for detecting the food temperature, the center temperature is estimated from the surface temperature of the input food, the quick freezing control is automatically started, and the maximum ice crystal formation zone is passed. By doing so, the automatic quick freezing that automatically terminates the quick freezing control makes it possible to perform high-quality freezing with more energy saving.

  Further, in a state where the cold storage material 257 of the cold storage material 150 is completely melted at the time of purchase or during a long-term power supply stop, the liquid level is located in the absorption unit 260 located above the tray installation surface 259. Thereafter, the cold storage material 257 is frozen while being cooled while being volume-expanded. The volume expansion is absorbed by the gas 258 in the absorption section 260 and freezes while the liquid level rises. Therefore, there is no expansion absorption gas 258 that hinders heat conduction on the tray installation surface 259, and further, the freezing expansion Therefore, the warpage of the tray installation surface 259 is reduced, so that the contact with the input food 158 is kept smooth. Thereby, the frozen food 157 and the input food 158 are efficiently cooled.

Thus, since the absorption part 260 which is a bubble pool which consists of a convex part in the up-down direction (gravity direction) is located in the up-down direction (gravity direction) rather than the tray installation surface 259 which is the cool storage material 257 foodstuff mounting part of the cool storage material 150. When the regenerator material is placed, the regenerator material 257 contained inside the regenerator material moves downward due to gravity, and the air contained in the outer container of the regenerator material 150 is a bubble pool located in the upper part. By moving to the cold storage material 257, the cold storage material is surely in contact with the inner side of the outer container facing the tray installation surface 259, and the heat conduction efficiency of the tray installation surface 259 can be further increased. It is.

  Note that in a structure in which the door 121 is a drawer-type door and the container 127 is pulled out of the refrigerator, the cold storage material 150 installed in the container 127 is easily exposed to the outside air, resulting in increased condensation and frost formation on the tray 261. Since the possibility of slipping of the food becomes high, the effect of suppressing the slipping of the food in the absorption unit 260 of the present embodiment is particularly effective.

  Moreover, since the installation height of the cool storage material 150 installed in the container 127 of the door 121 is 800 mm as in the present embodiment, the position of the door 121 is also close to 800 mm, and the door 121 is compared with a general human. Therefore, since the storage room that performs quick freezing automatically is located at the position that is most convenient to use, the usability for the user can be further improved. In addition, a door located at a height of 500 mm to 1200 mm, which is relatively easy for humans to operate, is likely to be manpowered and likely to increase the recoil associated with the opening and closing of the door 121. The absorption part 260 which is a food holding means for suppressing the movement of the food due to the sliding of the food when closed is particularly effective.

  As described above, in the present embodiment, a refrigerator main body having a storage compartment partitioned by heat insulation, a door for putting food in and out of the storage compartment, a container for storing the food, and the container A cooling promoting member having a cold storage function attached to at least one container, a detachable tray installed on the cooling promoting member, and a cooling means for cooling the storage chamber, The tray has deposited a material that generates heat by absorbing microwaves on its upper surface, so that even when food with a high temperature is added, the temperature inside the container can be kept to a minimum by the heat capacity of the cooling promoting member. And since the temperature rise of the part which contacts directly is small, the speed improvement effect which cools stored food directly with a cooling promotion member can be maintained. In addition, even when the cooling promoting member is heated due to the addition of food, the recooling time can be shortened by having a plurality of cooling means.

(Embodiment 2)
FIG. 3 is a cross-sectional view of the microwave oven according to Embodiment 2 of the present invention. The microwave oven in FIG. 3 includes a housing 301, a heating chamber 303, a magnetron 304, and a door 305. Since the tray 261 is the same as that of the first embodiment, the details are omitted. The food placement surface 262 is a metal having good thermal conductivity, and a material that absorbs microwaves and generates heat, such as ferrite, is deposited. The food placement surface 262 is placed on the food placement surface 262, and the microwave is used to remove the food. When heating, the ferrite absorbs the microwave and generates heat, so the surface of the food in contact with the ferrite is warmed, and the upper surface of the food is also warmed by the microwave, so that heating can be efficiently performed from above and below. The material that generates heat by absorbing the microwave may be tin oxide, and is not limited to this.

  The food material 302 is placed in the heating chamber 303, and the food material 302 is heated by the microwave generated from the magnetron 304.

The operation and action of the range configured as described above will be described below.
First, the food on the cooling promoting member or the frozen food in the first embodiment is placed on the tray 261 and moved to the heating chamber 303 of the range. When there are a plurality of foods, the food can be placed on the tray 261 and moved, so that a plurality of foods can be easily moved. Moreover, since there exists a convex part so that a food mounting part may be enclosed, even if a cooling promotion member inclines to some extent, it does not fall, and it is convenient.

After the power is turned on, the door 305 is opened, and the food 302 placed on the food placement surface 262 is heated.
Put in. Although not shown, when the operation button is pressed, a microwave is generated from the magnetron 304 and the food 302 is heated. At this time, the microwave generated from the magnetron 304 spreads over the entire heating chamber 303 and is reflected by the housing 301 so that it does not leak outside. The metal deposited on the food placement surface 262 absorbs microwaves generated from the magnetron 304, generates heat, and warms the surface where the food 302 comes into contact by heat conduction.

  Also, as the nature of the microwave, when the thickness of the food is large, the half depth of power is low, so the microwave cannot enter the center of the food, and it heats from the surface, causing unevenness at the time of thawing and heating unevenness Cause. By using both microwave and heat conduction heating as in the second embodiment, thawing and warming can be performed more efficiently than in the case of only microwaves. In addition, when heating meat and fish, it is difficult to burn with microwaves alone, and although not shown, the surface in contact with the top plate is also difficult to be burnt with heater heating, and it is necessary to turn it over halfway. However, since the metal deposited on the food placement surface 262 of the present embodiment absorbs and generates heat from the microwave generated from the magnetron 304, the surface in contact with the plate can be easily burnt, so cooking is efficient. Is possible.

  In the second embodiment, the tray 261 is placed on the bottom surface of the housing 301 of the microwave oven. For example, a shelf or the like that supports the tray 261 is attached to the side surface of the housing 301 so that a plurality of sheets can be placed. Good. As a result, it becomes possible to heat a plurality of foods at a time, which is efficient and easy to use.

  After heating with microwaves, the tray 261 is reinserted into the freezer and used. However, since the food placement surface 262 is made of metal, it has good heat conduction and cools quickly. It is easy to use.

  As described above, according to the second embodiment of the present invention, the food placement surface 262 on the tray 261 is made of a metal that generates heat by absorbing microwaves, so that it is possible to efficiently heat, heat, and burn the food. It became.

  As described above, the refrigerator according to the present invention can be frozen while minimizing the temperature rise in the container, and can be efficiently heated, so that it can be used not only for household refrigerators but also for commercial refrigerators. It can also be applied to.

102 Refrigerator body 107 Refrigerated room (storage room)
108 Freezer room (storage room)
109 Vegetable room (storage room)
121 Door 150 Cold storage material
153b, 153c Cold air outlet 259 Tray installation surface 261 Tray 262 Food placement surface 301 Housing (microwave oven)
302 Food 303 Heating room 304 Magnetron 305 Door

Claims (5)

Refrigerator body having a storage compartment partitioned by heat insulation, a container for storing food in the storage compartment, a cooling promotion member having a cold storage function attached to the container, and a detachable installed in the cooling promotion member A refrigerator having a simple tray and a cooling means for cooling the storage chamber, wherein the tray is vapor-deposited with a material that absorbs microwaves. The refrigerator according to claim 1, wherein the cooling promotion member has a tray placement portion for placing a tray, and a convex portion is provided on the upper side of the tray placement portion. The refrigerator according to claim 1 or 2, wherein the cooling promoting member is a cold storage material. The refrigerator according to any one of claims 1 to 3, wherein the material that generates heat by absorbing the microwave is ferrite. The refrigerator according to any one of claims 1 to 4, wherein the material that absorbs microwaves and generates heat is tin oxide.