JP2012017968A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of suppressing temperature rise in a container in opening a door and shortening a freezing speed while securing storage quality of stored food.SOLUTION: The refrigerator includes: a refrigerator body 2 having a storage compartment partitioned in a thermally insulating way; a door for putting in and taking out food to the storage compartment; a container for storing the food; a cold accumulating plate 150 having a cold accumulating material 150a inside installed in at least one container; and cooling means for cooling the cold accumulating plate 150 and the storage compartment. The cold accumulating plate 150 has a food placing member 162 for loading food and the cold accumulating material 150a closely disposed the food placing member 162, and the food placing member 162 is formed from a metallic material.

Description

  The present invention relates to a refrigerator capable of improving the freshness of frozen preserved foods.

  In recent refrigerators, as an invention aimed at improving the preservation of frozen preserved 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 (for example, see Patent Document 1).

  FIG. 5 is a side cross-sectional view of a main part showing an embodiment of a conventional refrigerator.

  The freezing room 8 which is a part of the storage room of the refrigerator main body 2 composed of the heat insulating box 1 has a refrigeration room 7 and a vegetable room having different temperature zones by an upper heat insulating partition 5 and a lower heat insulating partition 6 below. It is divided into nine. In addition, a partition 11 is provided between the left and right of the opening of the freezer compartment 8 to divide the opening vertically.

  The cool air generating chamber 12 provided on the back side of the freezer compartment 8 is provided with an evaporator 13 for generating cool air and a blower 14 for supplying and circulating the cool air to the refrigerator compartment 7, the freezer compartment 8, and the vegetable compartment 8 for evaporation. A defrosting heater 15 that is turned on at the time of defrosting is disposed in the lower space of the vessel 13.

  The door 21 and the lower door 22 are both doors of the drawer-type freezer compartment 8, and a container 27 and a lower container 28 supported by frame bodies 24 and 25 are integrally provided behind the door 21 and the freezer compartment 8. A cool air distribution chamber 30 that distributes the cool air generated by the evaporator 13 to the respective chambers is provided at the rear, and a plurality of cool air supply ports are formed on the front surface thereof.

  A tray 31 is provided at the bottoms of the container 27 and the lower container 28 in the freezer compartment 8, and cold air passages 27a and 28a are formed between the container 27 and the lower part 28 before and after the bottom. Yes.

  Further, in addition to the front side of the cold air distribution chamber 30, the container 27, the cold air supply ports 30 a and 30 b facing the upper opening surface of the lower container 28, and the cold air supply port 30 c corresponding to the cold air passage 27 a of the container 27, The cold air supply port 30d corresponding to the cold air passage 28a is provided. Therefore, not only the container 27 but also the lower container 28 can directly flow the cold air from the cold air distribution chamber 30 through the cold air passage 28a, and the cooling speed of the food can be increased.

  In this way, the trays 31 in the container 27 and the lower container 28 are quickly cooled, and the food in the containers is cooled from above and below by supplying cold air to the upper opening surfaces of the respective containers. In other words, the food can be frozen in a short time.

JP 2000-304435 A

In the conventional method, for example, when the door 21 is opened, the container 27 for storing the food is pulled out to the outside in conjunction with the door 21, so that the stored food is easy to see and the food can be taken out and put in. There is a merit that it is very easy. However, when cold air is discharged from the cold air supply port 30c, the distance from the cold air supply port 30c to the cold air passage 27a of the container 27 is increased, and the amount of cold air discharged from the cold air supply port 30c is circulated to the cold air passage 27a. It decreases extremely, and most of them are dispersed outside the cold air passage 27a. For this reason, the frozen food stored above the cold air passage 27a is exposed to the outside air without being cooled and the temperature rises, and the air in the freezer compartment 8 is agitated and the outside air and the cold air in the freezer compartment 8 are mixed. Since the replacement becomes intense, it takes time for cooling after closing the door 21, and the time for the frozen food to be exposed to a temperature exceeding the predetermined temperature in the freezer compartment 8 becomes longer. As a result, the surface of the frozen food may be thawed or some of the bacteria whose activity has been suppressed may propagate. In particular, the greater the degree of surface melting, the greater the number of re-frozen parts after the door 21 is closed, leading to more severe quality degradation. Even when food is supplied from the outside, the temperature in the container 27 rises due to the inflow of outside air accompanying the opening of the door 21 at the time of input, and it takes time to cool to a predetermined temperature even after the door 21 is closed. This requires a longer freezing time for the input food.

  In addition, when the door 21 is opened, the cooling is stopped, that is, even when care is taken not to discharge the cold air from the cold air supply ports 30a and 30c, the frozen food is exposed to the outside air although the degree is reduced. And the same thing happens.

  In view of the above, there is a demand for a method of maintaining quality by suppressing the temperature rise caused by the outside air while maintaining ease of taking out and putting in food.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a refrigerator main body having a heat-insulated compartment, a door for taking food into and out of the food compartment, and a container for storing the food. , A refrigerator having a cold storage plate having a cold storage plate attached to at least one of the containers, and a cooling means for cooling the cold storage plate and the storage chamber, the cold storage plate being a food And the cold storage plate placed in close contact with the food placing member, and the food placing member is made of a metallic material.

  As a result, even if the door is opened, that is, when the container is exposed to the outside and exposed to the outside air while maintaining the ease of taking out and putting in food, the cold storage plate absorbs the heat load caused by the outside air inflow. Therefore, the inside of the container is kept at a low temperature, the temperature rise of the stored food can be suppressed, and quality deterioration can be suppressed. Furthermore, even when food is introduced, even before the door is closed, the cold storage plate absorbs the heat load caused by the inflow of outside air and the heat load of the input food, so that the food is cooled and the inside of the container is compared to the conventional case. It is kept at a low temperature, and the food can be cooled in a short time, and the freshness can be improved.

  According to the present invention, even when the door is opened, that is, when the container is exposed to the outside and exposed to the outside air, the food is cooled and the inside of the container is kept at a lower temperature than before, and the food is shortened. Since it can cool in time and can improve the freshness, a refrigerator with higher freshness can be provided.

Sectional side view of the principal part at the time of door opening of the refrigerator in Embodiment 1 of this invention Sectional side view of the principal part at the time of the door closing of the refrigerator in Embodiment 1 of this invention Sectional side view of the principal part at the time of the door opening of the refrigerator in Embodiment 2 of this invention The perspective view of a container provided with the cool storage plate of the refrigerator in Embodiment 2 of this invention. The perspective view of the cool storage plate in Embodiment 2 of this invention Sectional drawing in the AA 'direction of the cool storage plate in Embodiment 2 of this invention Sectional drawing of the other cool storage plate of Embodiment 2 of this invention Sectional drawing of the other cool storage plate of Embodiment 2 of this invention Sectional side view of the principal part at the time of the door closing of the refrigerator in Embodiment 2 of this invention Side sectional view of the main part of a conventional refrigerator

  The invention of the refrigerator according to claim 1 includes 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 refrigerator having a cold storage plate having a cold storage plate attached to at least one container, and cooling means for cooling the cold storage plate and the storage chamber, the cold storage plate being a food on which food is placed Since the food storage member has a mounting member and the cold storage plate arranged in close contact with the food mounting member, and the food mounting member is formed of a metallic material, the door is opened while maintaining food storage When the container goes out of the container, the cold storage plate can keep the container at a low temperature and suppress the temperature rise of the stored food. In since it is endothermic cooling becomes possible to cool the food in a short time.

  The invention of the refrigerator according to claim 2 is the refrigerator according to claim 1, wherein the cold storage plate includes a bag-shaped member whose outer skin is formed of a heat conductive material, and a cold storage plate fee in the bag-shaped member. By being formed, it becomes possible to improve the heat conduction efficiency from the food to the cold storage plate material, and it is possible to improve the freezing speed of the food.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the bottom portion of the food placement member is disposed in close contact with the outer skin surface of the cold storage plate, so that the cold storage plate, the food placement member, Since the air layer on the contact surface of the food can be reduced and the heat conduction efficiency from the food to the cold storage plate can be improved, the freezing speed of the food can be improved.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the cold storage plate includes a case for storing the cold storage plate and the food placing member, and a frame. By fixing the case from above by the body, the surface of the cold storage plate is prevented from being damaged by food, and while maintaining the heat conduction efficiency from the food to the cold storage plate via the metal food mounting member, The freezing speed can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that detailed descriptions of parts that are the same as those in the conventional configuration and that have no difference are omitted. Further, the present invention is not limited to the embodiments.

(Embodiment 1)
1 and 2 are side cross-sectional views of the main part of the refrigerator according to Embodiment 1 of the present invention.

As shown in FIG. 1 and FIG. 2, a cold storage plate 150, which is a cold storage member having a cold storage function, is a door at the inner bottom of a container 127 located in the upper stage composed of two stages of a freezer compartment 108 that is a drawer-type storage room. 121, which is placed in a hollow portion that functions as a fixing means for fixing the cold storage plate provided on the 121 side, and is generated by inertia generated when the container 127 moves at a relatively high speed in the front-rear direction when the door 121 is opened and closed. The structure is such that it does not easily move backward in the container 127. That is, in the container of the freezer compartment 108 that is a storage room provided with the cold storage plate 150, the front side compartment located on the door 121 side is used as a storage area provided with the cold storage plate 150 and is located on the rear side. The compartment can be used properly as a storage unit that is a general refrigeration region in which the cold storage plate 150 is not provided.

  Further, the upper surface of the cold storage plate 150 in the freezer compartment 108 has a caster 151 for easily moving the refrigerator main body 102 provided on the lower surface of the heat insulating box 101 and a storage compartment installed below the freezer compartment 108. When the door 121 provided on the upper door 121 of the freezer compartment 108 provided at a height of 800 mm from the installation surface 152 is opened by the vegetable compartment 109, the container 127 extends from the outer shell. is set up. That is, the container 127 is a pull-out type, and the latent heat of the cold storage plate 150 is preferably lower than the freezing temperature of a general frozen food and lower than the temperature of the maximum ice crystal formation zone. When the temperature is set, it is possible to maximize the cooling speed when food is placed on the cold storage plate 150. However, if the temperature is set too low, the cold storage plate 150 cannot be sufficiently frozen, and if the cold storage plate charge provided in the cold storage plate 150 becomes a liquid instead of a solid, its cooling capacity is greatly increased. Therefore, the cold storage plate is made of a material having latent heat at −15 ° C., which is higher than the temperature of the freezer compartment 108 in a general household refrigerator, so that the cold storage plate is sufficiently frozen in the freezer compartment 108. The cold storage plate 150 had a width of 300 mm, a depth of 300 mm, and a height of 20 mm. When determining such external dimensions, that is, the filling amount in the cold storage plate 150, an optimum amount is set in consideration of the amount of heat possessed by the assumed food. The amount of filling in the cold storage plate 150 has an amount of heat having an amount of outside air corresponding to the volume of food installed on the upper surface, for example, an amount of latent heat corresponding to the sum of latent heat from 30 ° C. to −10 ° C. and sensible heat. As a result, when the cold storage plate 150 is frozen, it does not completely melt at the time of general food addition, that is, food with a high temperature from the outside is placed in contact with the cold storage plate 150. Even if it is placed, rapid cooling is achieved by the fact that the cold storage plate 150 is frozen without melting.

  The freezer compartment outlet 153 is an outlet through which cool air for cooling the freezer compartment 108 is discharged, and 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. It is. The supply duct 155 is a duct through which cool air for cooling the refrigerator compartment 107 is ventilated.

  The food stored in the container 127 having the cold storage plate 150 is the frozen food 157 that has already been stored and the input food 158 that has been newly input onto the cold storage plate 150.

  Further, the cold air supply and circulation for cooling the refrigerator compartment 107 and the vegetable compartment 109 are not shown.

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

  The cold storage plate 150 and the frozen food 157 are cooled to a predetermined temperature of −20 ° C. in the freezer compartment 108 and frozen. As shown in FIG. 1, when the door 121 is opened and the input food 158 is placed on the upper surface of the cold storage plate 150, the input food 158 is cooled by taking heat away from the cold storage plate 150 frozen at −20 ° C. immediately after input. Is started. Further, the outside air that has flowed into the container 127 by opening and closing the door accompanying the input of the food is also cooled by the cold storage plate 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. .

Further, when the door 121 is opened and there is a frozen food 157 that has been stored in the compartment on the back side adjacent to the cold storage plate 150, the cold storage plate 150 cools the outside air flowing into the container 127. The periphery of the food 157 is kept at a lower temperature than in the past. Further, even when the input food 158 having a relatively high temperature is in the same container 127, the temperature rise due to the heat interference from the input food 158 is also suppressed as compared with the conventional case.

  Thus, in the container of the freezer compartment 108 which is a storage room provided with the cold storage plate 150, the front side section located on the door 121 side is used as a storage area provided with the cold storage plate 150, and on the back side. The compartment that is positioned can be used as a storage unit that is a general refrigeration area that is not provided with the cold storage plate 150, so that the user can also store the input food when warm food is input. The region becomes clearer, and it is possible to reduce the thermal effect on the frozen food 157 stored in advance from the input food 158.

  After that, as shown in FIG. 2, when the door 121 is closed, it is determined that the door 121 is closed by a detection means (not shown), the operation of a refrigeration cycle (not shown) as a cooling means is started, and the refrigerant is supplied to the evaporator 113. Circulates and cool air is generated, and at the same time, the blower 114 is operated and the cool air circulates to start cooling. Cold air is supplied to the freezer compartment 108 from the freezer outlet 153 to cool the frozen food 157 and the input food 158. At this time, the frozen food 157 is cooled by both means of indirect cooling by the cool air passing through the surroundings and direct cooling from the cold storage plate 150 on the lower surface.

  At this time, the input food 158 is cooled, and at the same time, a small amount of cold air is used to cool the cold storage plate 150. However, since the freezer compartment 8 is cooled when it is higher than the predetermined temperature of −20 ° C., the temperature difference from the latent heat temperature of −15 ° C. of the cold storage plate 150 is small, and the cold air is mainly used for cooling food. The Further, the cold air supplied from the freezer discharge port 153 to the freezer 108 is ventilated into the container 127. At this time, the frozen food 157 located on the upstream side on the air path of the low-temperature cold air discharged from the freezer outlet 153 and the input food placed on the upper surface of the cold storage plate 150 located on the downstream side 158 is cooled. Here, the closer the frozen food 157 and the input food 158 are to −15 ° C., which is the latent heat temperature of the cold storage plate 150, the temperature difference between the frozen food 157 and the input food 158 and the cold air is the temperature difference between the cold air and the cold storage plate 150. Therefore, the weight of cold air used for cooling the cold storage plate 150 increases. However, for example, when the frozen food 157 and the input food 158 are fish or meat, minerals, amino acids, and the like are included, so there are many cases where the maximum ice crystal formation zone is from 0 ° C to -10 ° C. Most of the cold air will cool the frozen food 157 and the input food 158. In addition to the cooling by the cold air, the maximum ice crystal production zone passes quickly by the cooling from the cold storage plate 150.

  In this manner, when the container 127 goes out when the door 121 is opened, the temperature rise of the frozen food 157 stored in the container 127 after being cooled by the cold storage plate 150 can be suppressed, and the input food 158 that has been input. Since the inflowing outside air is cooled by the cold storage plate 150, it can be frozen in a short time.

  Furthermore, since the cold storage plate 150 is installed in a portion that is exposed to the outside air the earliest when the door 121 is opened and is exposed to the outside air the latest when the door 121 is closed, the temperature rise of the frozen food 157 is further suppressed. The cooling time of the input food 158 can be shortened.

  Furthermore, since the cold storage plate 150 has a structure that can be easily attached to and detached from the container 127, it is easy to clean and can be used for other purposes. In addition, even when the input food 158 is stored with wet hands, even if a hand comes in contact with the cold storage plate 150, it is easy to remove the cold storage plate 150 from the cold storage plate 150 and heat it. Is possible.

Furthermore, since at least a part of the container provided with the cold storage plate 150 is high enough to reach a hand even if a woman of general height does not bend, it can be assumed that more people can easily reach the installation surface. Since the cold storage plate 150 is similarly positioned at a height of 800 mm from the installation surface, the cold storage plate 150 can be easily attached and detached. It can be easily treated when it is not separated due to. In the present embodiment, at least a part of the container provided with the cold storage plate 150 has a height of 800 mm. However, since the position between 600 mm and 1200 mm is generally the most usable position, the position is within that range. It is desirable to make it.

  Furthermore, since the cold storage plate 150 has a width and depth of 300 mm, the height dimension is smaller by 20 mm, the food installation area increases even if the amount of the internal cold storage agent is equal, and the amount of the cold storage agent inside the cold storage plate is the same. In addition to increasing the area that can be contacted with food and maintaining food storage, it is possible to further reduce the temperature rise of stored foods and shorten the cooling time at the time of food addition, as well as many frozen foods 157 and input foods 158 can be stored, and large frozen food 157 and input food 158 can be stored. Further, since the contact area between the frozen food 157 and the input food 158 and the cold storage plate 150 can be increased, the temperature rise can be further suppressed and the cooling time can be shortened.

  In this embodiment, the cold storage plate is used as the cold storage member having the cold storage function. However, even if the cold storage plate has a thickness of 5 mm or more, for example, it is applicable as long as it has the cold storage function. Is possible.

  Furthermore, since the door 121 is a drawer type, cold air having a lower temperature is less likely to escape from the upper surface of the container as compared with the rotary door, and the temperature rise of the frozen food 157 can be suppressed and the cooling time of the input food 158 can be shortened. It is.

(Embodiment 2)
FIG. 3A is a side sectional view of a main part of the refrigerator according to Embodiment 2 of the present invention, FIG. 3B is a perspective view of a container provided with a cold storage plate according to Embodiment 2 of the present invention, and FIG. 3D is an exploded perspective view of the cold storage plate in the second embodiment, FIG. 3D is a cross-sectional view of the main part of the cold storage plate in the second embodiment of the present invention, and FIG. 4 is a side cross-sectional view of the main part of the refrigerator in the second embodiment of the present invention. It is.

  In the present embodiment, a detailed description of the same parts as the configuration and technical idea described in the first embodiment is omitted, and a technical concept similar to the content described in the above embodiment can be applied. With respect to, it is possible to realize a configuration in combination with the technical contents and configurations described in the above embodiments.

  As shown in the figure, a cold storage plate 150, which is a cold storage member having a cold storage function, is placed on the inner bottom, that is, the bottom side of a container 127 located in the upper stage composed of two stages of a freezing room 108 as a storage room. And provided on the door 121 side.

  Further, the fixing means for suppressing the movement of the cold storage plate 150 is a hollow portion 160, and the hollow portion 160 is configured integrally with the container 127 as a part of the resin member that is a component of the container 127.

  In this way, the depression 160 is installed at the rear portion of the cold storage plate 150 so that the cold storage plate 150 installed on the door 121 side, which is the front side of the container 127, does not move backward due to the inertia due to the opening / closing operation of the door 121. Has been.

The food holding means 161 is provided on the food placing member 162 for placing food on the upper surface of the cold storage plate 150, and the food placing member 16 is disposed on the opposite side of the door 121 side behind the cold storage plate 150.
The shape protrudes upward from 2. Thus, the input food 158 placed on the food placement member 162 of the cold storage plate 150 is prevented from moving to the storage unit 163 which is a storage unit at the rear of the cold storage plate 150 due to the opening / closing operation of the door 121. Yes.

  Further, the food holding means 161 is installed on all four sides so as to surround the food placing member 162. In this embodiment, the food holding means 161 is continuously provided over the outer periphery of the food placing member 162. ing.

  Thus, in the container 27 of the freezer compartment 108 which is a storage room provided with the cold storage plate 150, the front side compartment located on the door 121 side is used as a storage area provided with the cold storage plate 150. The section located on the rear side (back side) from the storage area can be used as a storage unit 163 which is a general area where the cold storage plate 150 is not provided.

  Moreover, the boundary part 127a between the food holding means 161 provided in the storage area provided with the cold storage plate and the general freezing area not provided with the cold storage plate is smoothly formed via the inclined part 127b.

  The cold storage plate 150 is detachable, and includes an attachment / detachment assisting portion 170 formed as a recess so that a user's finger can be inserted into the recess 160 when the cold storage plate 150 is attached / detached. The container on the side opposite to is provided with an attaching / detaching holding portion 171 formed as a recess. These engage with the cold storage plate attaching / detaching auxiliary portion 172 formed by the concave portions provided in the cold storage plate 150, respectively.

  The structure of the cold storage plate 150 will be specifically described.

  The regenerator plate 150 has a regenerator material 150a therein, and the regenerator material 150a is generally lower than the freezing temperature of the food to be frozen, lower than the maximum ice crystal formation zone temperature, and higher than the temperature of the freezer compartment 3. The melting temperature is set to -15 ° C, which is a higher temperature. Further, the filling amount of the cold storage material 150d filled in the cold storage material 150a is set to an amount that does not completely melt even when food is put on and placed on the cold storage material 150a.

  The outer skin 150aa of the cold storage material 150a is a bag-like member formed of, for example, an aluminum laminate film, which is a metal having good thermal conductivity and strong corrosion resistance.

  Further, the food placing member 162 for placing food is made of a metallic material, and is made of, for example, an aluminum plate having high corrosion resistance. The cold storage plate 150 is configured by housing the cold storage material 150a and the food placing member 162 in a case 150e serving as an outer container, and fixing the opened frame 150f from the upper part of the case 150e.

  The frame 150f presses the outer peripheral flange 150ba formed in a flat surface shape continuous with the food holding means 161 of the food placing member 162, and the claw 150fa formed on the frame 150f is engaged with the side wall of the case 150e. And fixed.

  Therefore, the bottom surface portion 150bb of the food placing member 162 is pressed against the surface of the outer skin 150aa of the cold storage material 150a by the fixing by the frame 150f, and is firmly fixed.

Further, the bottom surface portion 150bb of the food placing member 162 is disposed so that the bottom surface portion 150bb is covered with the outer skin 150aa of the cool storage material 150a so that the surface area of the cool storage material 150a is smaller. A part of the outer skin 150aa is the bottom surface portion 150b of the food placing member 162.
There is provided a bubble reservoir 150c that circulates upward toward the food holding means 161, which is a side surface formed continuously from b.

  That is, since the air bubble reservoir 150c is positioned above the food placing member 162 in the vertical direction (gravity direction), when the food placing member 162 is placed, it is inside the cold storage material 150a. The cold storage material 150d moves downward due to gravity, and the air contained in the outer skin 150aa of the cold storage material 150a moves to the bubble reservoir 150c located at the upper portion, thereby ensuring that the food placement portion 150b has the cold storage material. Are in contact with each other, and the heat conduction efficiency of the food placing portion 150b can be further increased.

  Further, since the food storage member 162 is held on the upper side in the vertical direction and the cold storage material 150a is held on the lower side by the resin case 150e, even if the cold storage material 150a freezes and expands, it expands downward. The food mounting member 162 side can maintain a substantially flat surface.

  Further, the food placing member 162 and the cold storage material 150a may be bonded with a double-sided tape or the like, and in close contact with the food placing member 162 in a state where the outer skin 150aa is wrinkled, an air layer is formed between them. Can be prevented, the adhesion between the cold storage material 150a and the food placing member 162 can be improved, and the thermal conductivity can be increased.

  Further, the frame 150f has an opening so that the placing surface of the food placing member 162 is exposed and the food is placed in direct contact with it.

  Further, the upper surface of the cold storage plate 150 in the freezer compartment 108 has a caster 151 for easily moving the refrigerator main body 102 provided on the lower surface of the heat insulating box 101 and a storage compartment installed below the freezer compartment 108. The vegetable chamber 109 is installed at a position where the height from the ground surface 152 is 800 mm.

  Furthermore, the cold storage plate 150 is made of 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. The thickness of 300 mm, depth of 300 mm, and height is 20 mm. The amount of filling in the cold storage plate 150 has an amount of heat having an amount of outside air corresponding to the volume of food installed on the upper surface, for example, an amount of latent heat corresponding to the sum of latent heat from 30 ° C. to −10 ° C. and sensible heat. It is what. That is, when the cold storage plate 150 is frozen, it does not melt completely at the time of general food input in normal use.

  The freezer compartment outlet 153 is an outlet through which cool air for cooling the freezer compartment 108 is discharged, and 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. It is. The supply duct 155 is a duct through which cool air for cooling the refrigerator compartment 7 is ventilated.

  In the container 27, the frozen food 157 already stored and the newly input food 158 stored on the upper surface of the cold storage plate 150 are stored.

  In addition, the horizontal height 162a of the food placing portion 162 in the storage area in which the input food 158 is stored is compared to the horizontal height 163a in the storage portion 163 in the frozen area in which the frozen food 157 in the container 27 is stored. Is placed at a high position.

  In addition, although cold air supply and circulation for cooling the refrigerator compartment 107 and the vegetable compartment 109 are not illustrated, the cold air supply and circulation are performed by a cooling air passage that is different from the cooling air passage that cools the freezer compartment. .

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

  The cold storage plate 150 and the frozen food 157 are cooled and frozen to −20 ° C., which is a predetermined temperature of the freezer compartment 8. As shown in the figure, when the door 121 is opened and the input food 158 is placed on the food placement member 162 of the cold storage plate 150, the input food 158 is heated from the cold storage plate 150 frozen at -20 ° C immediately after the input. Is taken away and cooling begins. Furthermore, the outside air that has flowed into the container 127 is also cooled by the cold storage plate 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.

  In addition, when the door 121 is opened and the frozen food 157 previously stored in the food placing member 162 of the cold storage plate 150 is stored, the frozen food 157 is cooled by the cold storage plate 150 and the cold storage plate 150 is stored in the container 127. The outside air flowing into the inside is cooled, and the periphery of the frozen food 157 is kept at a low temperature as compared with the conventional case. Furthermore, the temperature rise due to heat interference from the input food 158 is also suppressed as compared with the conventional case.

  Thereafter, as shown in the figure, when the door 121 is closed, it is determined that the door 121 has been closed by a detection means (not shown), the operation of the refrigeration cycle (not shown) of the cooling means is started, and the refrigerant flows into the evaporator 113 to cool the air. At the same time as the air blower 114 is operated and the cold air circulates to start cooling. Cold air is supplied to the freezer compartment 108 from the freezer outlet 153 to cool the frozen food 157 and the input food 158. At this time, the frozen food 157 and the input food 158 are cooled by the cool air passing through and the cooling from the cold storage plate 150 on the lower surface. A small amount of cold air is also used to cool the cold storage plate 150. However, since the freezer compartment 108 is cooled when the temperature is higher than the predetermined temperature of −20 ° C., the temperature difference from the latent heat temperature −15 ° C. of the cold storage plate 150 is small, and the cold air is mainly used for cooling food. The Further, the cool air is ventilated in the container 127 by a ventilation structure (not shown). At this time, since the food placing member 162 of the cold storage plate 150 is covered with the frozen food 157 and the input food 158, the frozen food 157 and the input food 158 are mainly cooled. Here, the closer the frozen food 157 and the input food 158 approach to −15 ° C., which is the latent heat temperature of the cold storage plate 150, the more weight the cold air is used to cool the cold storage plate 150. When the food 158 is fish or 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 mainly frozen food 157 and input food. Cool 158. In addition to the cooling by the cold air, the maximum ice crystal production zone passes quickly by the cooling from the cold storage plate 150.

  In this way, when the container 127 is moved out of the refrigerator main body 102 and the cold storage plate 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 plate 150 and stored. The temperature rise of the food 157 can be suppressed, and the input food 158 and the outside air that has flowed in are cooled by the cold storage plate 150, so that they can be frozen in a short time.

In addition, since the cold storage plate 150 has a large heat capacity, a part of 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 plate 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 cold storage plate 150, and the humid air is frosted by the evaporator 113 and dehumidified. Moisture and frost adhering to the surface of the cold storage plate 150 are removed by circulation of the cooling air during the cooling operation in which the low-temperature air is circulated again and flows around the cold storage plate 150 to remove moisture from the cold storage plate 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 cold storage plate 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 input food 158 easily slides on the regenerator plate 150 due to the reaction. In addition, after that, moisture existing between the food and the cold storage plate 150, that is, frost or ice, is difficult to flow through the cooling air, so that it is difficult for sublimation and evaporation to remain, and the door remains in the remaining state. If 121 is opened, there is a possibility that food will slip even if the reaction occurs. Thus, even if the door 121 is opened or closed randomly or by an operation that is frequently performed, the cold storage plate 150, even if the cold storage plate 150, the frozen food 157, or the input food 158 generates a force that slides and moves to the rear of the container 127. Corresponds to the fixing means 160, and the frozen food 157 and the input food 158 correspond to the food holding means 161, so that the cold storage plate 150 is prevented from moving to the rear storage portion 163 by the fixing means 160, and the frozen food 157 and the input food 158 hold the food. The means 161 can prevent the cold storage plate 150 from moving from the food placing member 162 to the rear storage portion 163 and stops at a position above the food placing member 162. Further, the forward movement of the cold storage plate 150, the frozen food 157 and the input food 158 is prevented by the front wall of the container 127.

  For this reason, in addition to suppressing the deviation of the input food 158 from the food placing member 162 due to the movement of the cold storage plate 150, the movement of the input food 158 due to the sliding of itself can be suppressed, and the reaction caused by the opening and closing of the door 121 is prevented. Even if it exists, the heat | fever of the frozen food 157 and the input food 158 is efficiently absorbed by the cool storage plate 150, and temperature rise suppression and the cooling time at the time of food input can be shortened.

  As described above, in the present embodiment, the food holding means 161 is provided on the food placing member 162 on which the food on the upper surface of the cold storage plate 150 is placed, and the food on the opposite side of the cold storage plate 150 from the door 121 side. The shape protrudes upward from the mounting member 162. Thus, the input food 158 placed on the food placement member 162 of the cold storage plate 150 is prevented from moving to the storage unit 163 which is a storage unit at the rear of the cold storage plate 150 due to the opening / closing operation of the door 121. Yes.

  Further, the food holding means 161 is installed on all four sides so as to surround the food placing member 162. In this embodiment, the food holding means 161 is continuously provided over the outer periphery of the food placing member 162. Therefore, since the outer periphery is made of resin, as in the present embodiment, the food placement portion has a low coefficient of friction and the food is slippery. Even when sliding in multiple directions, the food holding means 161 is formed on all four sides of the food placing portion, so that the movement of the input food 158 due to its own sliding can be suppressed, and there is a reaction due to the opening and closing of the door 121. In addition, the heat of the input food 158 is efficiently absorbed by the cold storage plate 150, and the temperature rise can be suppressed and the cooling time at the time of food input can be shortened.

  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 plate 150 installed in the container 127 is easily exposed to the outside air, and condensation and frost formation on the cold storage plate 150 increase. Since the possibility of food slipping increases, the food slip prevention effect of the fixing means 160 and the food holding means 191 of this embodiment is particularly effective.

  Moreover, the boundary part 127a between the food holding means 161 provided in the storage area provided with the cold storage plate and the general freezing area not provided with the cold storage plate is formed smoothly via the inclined part 127b. Since there is no right-angle step in the freezing area, the air path resistance is reduced in the flow direction of the cool air from the back side, and the cool air is smoothly transferred to the storage area provided with the cold storage plate 150 downstream. For example, a vortex or the like is generated in the flow of cold air from a storage compartment for storing warm items. It is possible to suppress the cool air from flowing backward to the storage unit 163 that is a refrigeration region, and to further improve the cooling efficiency.

  Further, the storage surface of the food placement unit 162 in the storage area in which the input food 158 is stored with respect to the horizontal height 163a of the storage surface in the storage unit 163 in the frozen region in which the frozen food 157 in the container 27 is stored. The horizontal height 162a is arranged at a higher position. As a result, even if the input food 158 to be put into the food placement section is a food having a relatively high temperature, the warm air flows upward instead of flowing downward. When warm air is generated, warm air can be prevented from flowing into at least the horizontal height 163a of the storage surface of the storage unit 163, and the frozen food 157 stored in the storage unit 163, which is a freezing region, can be prevented. It becomes possible to suppress the heat influence from the input food 158.

  Further, the cold storage plate 150 is detachable, and includes an attachment / detachment assisting portion 170 formed as a recess so that a user's finger can be inserted when the cold storage plate 150 is attached / detached to / from the hollow portion 160. The container on the side facing the portion 170 is provided with a detachable holding portion 171 formed as a recess. Each of these engages with the cold storage plate attachment / detachment auxiliary portion 172 formed by a concave portion provided in the cold storage plate 150, so that the feeling of use at the time of attachment / detachment is good and the positioning at the time of attachment can be ensured. That is, in the state where the cold storage plate 150 is mounted in the hollow portion 160, the user's finger is inserted by connecting the attachment / detachment assisting portion 170 on the container 127 side and the cold storage plate attachment / detachment assisting portion 172 by the concave portions. It is possible to improve the user-friendliness when attaching and detaching, and even when removing the cool storage plate, the cool storage plate can be easily removed by using these attachment / detachment holding parts as a fulcrum. It is possible to make it.

  Moreover, since the installation height of the cold storage plate 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 person. Since it is located at a height from 500 mm to 1200 mm, which is easy to operate, there is a high possibility that human power is easily applied and the reaction caused by opening and closing of the door 121 is high. Therefore, the fixing means 160 and the food holding means 161 of the embodiment are The anti-slip effect of food is particularly effective.

  In the present embodiment, the attachment / detachment assisting portion 170 and the cold storage plate attaching / detaching assisting portion 172 are formed as an auxiliary structure for the user to put his / her finger when attaching / detaching the cold storage plate 150, and the attachment / detachment is performed more smoothly and Although the cold storage plate attachment / detachment holding portion 173 is provided in the attachment / detachment holding portion 171 as a holding structure for ensuring, it is not always necessary to provide both, depending on the needs of the user and the structure of the storage room or the cold storage plate 150 For example, it is also possible to apply only the attachment / detachment assisting portion 170 and the cold storage plate attachment / detachment assisting portion 172 which are assisting structures for inserting a finger.

  Further, in the present embodiment, the structure for inserting the finger of the cold storage plate is formed by the combination of the attachment / detachment auxiliary portion 170 on the container 127 side and the cold storage plate attachment / detachment auxiliary portion 172 on the cold storage plate 150 side. It is also conceivable to make the attachment / detachment smooth by providing an attachment / detachment assisting structure so that the finger is easily caught.

  The food placing member 162 in FIG. 3E is obtained by changing the shape of the bottom surface portion 150bb of the food placing portion to the corrugated portion 200. For example, when the material of the member is a metal, when the corrugated portion 200 is processed, it is hardened by deforming the plane to increase the strength of the food placing member 162. Thereby, the thickness of the food placing member 162 can be reduced, and the material cost can be suppressed.

  When an aluminum plate is used for the food placing member 162, the surface is vertical in the case of a thickness of 0.8 mm where the processing of the corrugated portion 200 is not performed and in the case of a thickness of 0.6 mm where the processing of the corrugated portion 200 is performed. The amount of deformation is the same and the strength is equivalent.

  Therefore, by processing, the weight of the material used can be reduced, and the material cost can be suppressed. In addition, since the shape of the surface of the food placing portion becomes wavy, when the food is pressed against the surface and placed, the surface of the food is placed so as to follow the shape of the surface of the food placing portion. Therefore, the contact area between the food and the food placing member is increased, and the cooling efficiency of the food is improved.

  The food placing member 162 in FIG. 3F is obtained by inclining the shape of the bottom surface portion 150bb of the food placing portion. Specifically, in a state where the food placing member 162 is installed on the drawer door 121 as shown in FIG. 3A, the central portion is positioned lower than the front end portion and the rear end portion in the front-rear direction of the food placing member 162. Further, the bottom portion 150bb is formed as an inclined surface. In the case of FIG. 3F, a broken line portion 201 is formed in the left-right direction, the central portion of the bottom surface portion 150bb is the lowest, and gradually increases toward the outside from there, and the front end portion and the rear end of the food placing surface The department is the highest.

  A cold storage material whose outer skin is a bag-like member is installed directly under the food placement member, but because the food placement surface has an inclined shape as described above, the surface of the cold storage material has a low central portion. The outer part is stored in a high state. Since the air bubbles enclosed in the regenerator material have a density lower than that of the regenerator material, the air bubbles are always present in a higher portion.

  That is, the air bubbles inside the regenerator material are always present in the outer portion of the regenerator plate. Therefore, it is possible to prevent air bubbles from staying in the central portion of the food placing surface where the food is most frequently placed, and it is possible to prevent the cooling efficiency from deteriorating.

  As described above, the refrigerator according to the present invention can be used for a household refrigerator having a storage room for rapidly cooling food.

102 refrigerator main body 121 door 127 container 150 cold storage plate

Claims (4)

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 a cold storage material attached to at least one of the containers. A refrigerator having an internal cold storage plate and a cooling means for cooling the cold storage plate and the storage chamber, the cold storage plate being attached to a food placing member for placing food, and the food placing member The refrigerator having the cold storage material arranged in close contact, and the food placing member is made of a metallic material. The refrigerator according to claim 1, wherein the cold storage material is formed by having a bag-shaped member whose outer skin is formed of a heat conductive material and the cold storage material in the bag-shaped member. The refrigerator according to claim 1 or 2, wherein the bottom portion of the food placing member is disposed in close contact with the outer skin surface of the regenerator material. The cold storage plate is provided with a case for storing the cold storage material and the food placing member, and a frame, and the case is fixed from above by the frame. Refrigerator.