JP2011257082A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that facilitates putting a food in and out so as to improve freshness of the food to be maintained.SOLUTION: The refrigerator 102 includes: a door 121 for putting a food in and out to/from a freezer 108 which is a storage compartment; a container 127 of being put outside of the refrigerator body 102 while opening the door 121; a cold storing agent 150 in the container 127; and an upper discharge duct for discharging cold air to a storage area having the cold storing agent 150. Thus, a temperature rise of a frozen food 157 which is previously stored can be suppressed and a food to be stored 158 can be quickly frozen by a refrigerating effect of the refrigerant and discharged cold air from the upper discharge duct.

Description

  The present invention relates to a refrigerator capable of improving the freshness of stored 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. 9 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

However, in the above conventional configuration, when food before freezing is put into the tray, especially when food with high temperature is put in, the tray immediately heats up because the tray does not have a cold storage function, Although the food itself is cooled, other foods are heated through the tray and heated up, and the surface of the stored food that has been stored frozen thaws or some of the bacteria whose activities have been suppressed There is concern about the possibility of breeding. 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 whose temperature has been raised needs to cool the food at the same time as the food is cooled, so that the speed of cooling the food becomes slow, and the frozen quality is lowered. Thus, in the conventional configuration, there is a problem that it is impossible to achieve both suppression of heat interference with other foods and rapid cooling of the input foods.

  The present invention solves the above-mentioned conventional problems, and provides a refrigerator that realizes the effect of shortening the freezing rate while suppressing the temperature rise at the time of food addition and ensuring the preservation quality of stored food. Objective.

  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 regenerator material that is attached to the specified position of the container and places food on top to promote cooling; and a storage unit that stores frozen food in a position different from the regenerator material in the container. The cold air outlet through which the cold air duct that passes cold air through the upper part of the storage unit extends forward and the cold air that passes through the cold air duct is discharged is a refrigerator that is disposed near the upper part of the cold storage material.

  As a result, even when food with a high temperature is introduced, the temperature rise in the container can be minimized by the relatively large heat capacity of the cold storage material, and cold convection is promoted by providing a slit hole, Since the cooling by the cooling means is promoted, the effect of improving the speed of cooling the stored food by the cold storage material can be maintained. In addition, even when the temperature of the cold storage material is increased due to the input of food, the recooling time can be shortened.

  Since the refrigerator of this invention can improve the freezing speed shortening effect of input food, ensuring the preservation | save quality of the foodstuff stored in a preservation | save part, it becomes possible to provide a refrigerator with higher freshness.

Side sectional view of an essential part of the refrigerator according to Embodiment 1 of the present invention. The perspective view of the container of the refrigerator in Embodiment 1 of this invention Side sectional view of the main part of a conventional refrigerator

  The invention of the refrigerator according to claim 1 is 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 an attachment to the container. The refrigerator includes a cooling promotion member having the stored cold storage material therein, and a cooling means for cooling the cooling promotion member and the storage chamber, and promotes cooling by the cooling means on the front wall of the container Because it is a refrigerator that has a slit hole to be formed, even when high temperature food is put in, the cooling promotion member having a cold storage function has a relatively large heat capacity to minimize the temperature rise in the container and the cooling promotion member, Since the temperature-promoting cooling promoting member can be rapidly cooled, the freezing rate of the stored food can be increased.

  The refrigerator according to claim 2 is the refrigerator according to claim 1, wherein the slit hole is formed above the position where the regenerator material is installed, so that the cold air convection circulates on the food storage surface of the regenerator material. Can be improved.

  The invention of the refrigerator according to claim 3 is the refrigerator according to claim 1 or 2, wherein the cooling promoting member is disposed on the front side located on the door side in the container. It can be used properly as a storage area.

  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)
FIG. 1 is a side cross-sectional view of a main part of the refrigerator according to Embodiment 1 of the present invention.

  As shown in FIG. 1, a regenerator material 150 that is a regenerator member having a regenerator function is located on the door 121 side at the inner bottom portion of a container 127 that is located in the upper stage constituted by two stages of a freezer compartment 108 that is a drawer-type storage room. It is placed in a hollow portion that functions as a fixing means for fixing the provided cold storage material, and the inside of the container 127 is caused 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. It is the structure which does not move easily behind. That is, in the container of the freezer compartment 108 that is a storage room provided with the cold storage material 150, the front side compartment located on the door 121 side is used as a storage area provided with the cold storage material 150 and is located on the back side. The compartment can be used properly as a storage unit that is a general refrigeration region in which the cold storage material 150 is not provided.

  Further, the upper surface of the regenerator material 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 regenerator material 150 is preferably lower than the freezing temperature of a general frozen food and lower than the maximum ice crystal formation zone temperature. Setting the temperature makes it possible to maximize the cooling speed when food is placed on the cold storage material 150. However, if the temperature is set too low, the cold storage material 150 cannot be sufficiently frozen, and if the cold storage material provided in the cold storage material 150 becomes a liquid instead of a solid, its cooling capacity is greatly reduced. Therefore, the regenerator material 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 regenerator material is sufficiently frozen in the freezer compartment 108. In addition, the regenerator material 150 had a width of 300 mm, a depth of 300 mm, and a height thickness of 20 mm. When determining such external dimensions, that is, the filling amount in the regenerator material 150, an optimal amount is set in consideration of the amount of heat possessed by the assumed food. The amount of filling in the cold storage material 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 total amount of latent heat and sensible heat from 30 ° C to -10 ° C. As a result, when the cold storage material 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 material 150. Even if it is placed, rapid cooling is achieved by the fact that the cold storage material 150 is frozen without melting.

  The refrigerator main body 102 includes a refrigeration room 107 in the upper part and a vegetable room 109 in the lower part, and a freezing room 108 is formed between the refrigeration room 107 and the vegetable room 109. The refrigerator compartment 107 and the freezer compartment 108 are vertically insulated by a heat insulating partition wall 105.

  An evaporator cover 300 that covers the evaporator 113 is formed behind the container 127 whose upper surface is opened in conjunction with the operation of the door 121 that can be pulled out in the front-rear direction.

  The evaporator cover 300 is formed with a lower discharge port 302 for discharging cool air to the lower container 301 of the freezing chamber 108. An upper discharge duct 153 is connected to the upper part of the evaporator cover 300.

  The upper discharge duct 153 constitutes an air path with the heat insulating partition wall 105 as an upper surface above the upper container 127. Upper discharge duct 153 extends toward door 121.

  Further, the configuration inside the storage portion of the container 127 will be described.

  The resin case of the cold storage material 150 is provided with a relatively flat food installation surface 259 for installing food on the upper surface, and an absorption part 260 protruding upward in a form surrounding the food installation surface 259 around the food installation surface 259. In addition, the absorption unit 260 has a function of a food holding unit that suppresses the movement of the food placed on the cold storage material 150.

  The container 127 has a storage unit 263 that is a normal storage space, that is, a freezing region, behind the projecting unit 156.

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

  Further, cold air generated by the evaporator 113 is forcibly blown by the blower 114 to the storage area provided with the cool storage material 150 and is intensively discharged to the cool storage material 150 in the storage area. The upper discharge duct 153 extends so that the discharged outlet 153a is formed at a position over the storage section 263 of the storage area and on the upper part of the cold storage material 150 positioned on the door 121 side.

  In addition, a plurality of discharge ports 153a are arranged in the left-right width direction of the container 127, and the cool air of the cool storage material 150 is discharged uniformly.

  A plurality of slit holes 310 are formed in the front wall of the container 127 above the cool storage material 150.

  With the above configuration, the regenerator material 150 and the frozen food 157 are cooled to -20 ° C., which is a predetermined temperature of the freezer compartment 108, and frozen. As shown in FIG. 1, when the input food 158 at 5 ° C. corresponding to the refrigeration temperature is placed on the food installation surface 259 of the cold storage material 150, the input food 158 is frozen at −20 ° C. immediately after the input. Heat is taken away from it and cooling starts. At this time, the cold storage material 150 is heated from −20 ° C., which is a sensible heat region, to −15 ° C. due to heat absorption, and a part of the cold storage material 150 is melted while maintaining a temperature difference with the input food 158 at −15 ° C. in the latent heat region. 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 heat 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. Some melt while maintaining a moderate temperature difference.

  The cold air passing through the upper discharge duct 153 is discharged from the discharge port 153a, and the cold air passing between the container 127 and the door 121 through the slit hole 310 circulates in the lower container 301 and is formed in the lower part of the evaporator cover 300. Heat is exchanged from the return port 154 to the evaporator 113, and the circulation is repeated.

As a result, the air in the container 127 is kept at a lower temperature than in the prior art, and the input food 158 is further cooled by the low-temperature air.
If it is not a latent heat type cold storage material, the temperature difference becomes smaller as heat exchange proceeds with the temperature rise of the cold storage material in addition to lowering the temperature by cooling the input food 158, and it takes time to cool the input food 158 to a predetermined temperature. In short, in this embodiment, since the regenerator material 150 has a latent heat temperature of −15 ° C., a large temperature is generated when heat is exchanged to about −10 ° C., which is the maximum ice crystal formation zone related to the freezing quality of the input food 158. The difference can be secured and the maximum ice crystal formation zone can be passed quickly. Furthermore, since the latent heat temperature is higher than the freezer temperature −20 ° C., a heat exchange temperature difference necessary for freezing the cold storage material 150 can be secured. The food stored in the container 127 having the cold storage material 150 is the frozen food 157 that has already been stored and the input food 158 that is newly input onto the cold storage material 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 material 150 and the frozen food 157 are cooled to -20 ° C., which is a predetermined temperature of 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 material 150, the input food 158 is cooled immediately after the heat is taken from the cold storage material 150 frozen at −20 ° C. Is started. Furthermore, 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 cool 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. .

  In addition, when the door 121 is opened and the frozen food 157 previously stored in the rear side section adjacent to the cold storage material 150 is stored, the cold storage material 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 cool storage material 150, the front side section located on the door 121 side is used as a storage area including the cool storage material 150, and on the back side. The section that is positioned can be used as a storage unit that is a general refrigeration region that is not provided with the regenerator material 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. Become.

  Furthermore, since the portion of the cold storage material 150 that is exposed to the outside air the earliest when the door 121 is opened and the outside air is exposed to the latest when the door 121 is closed is installed, 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 regenerator material 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, when the input food 158 is stored with wet hands, even if a hand comes into contact with the cold storage material 150, it is possible to remove the cold storage material 150 and heat it to release the cold storage material 150. It is.

  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.

DESCRIPTION OF SYMBOLS 101 Heat insulation box 102 Refrigerator main body 107 Refrigeration room 108 Freezing room 109 Vegetable room 113 Evaporator 114 Blower 121 Door 127 Container 150 Cold storage material (cool storage member)
152 Installation surface 153 Upper discharge duct 153a Discharge port 154 Return port 155 Supply duct 156 Protruding portion 157 Frozen food 158 Input food 257 Heat storage material 259 Food installation surface 263 Storage portion 310 Slit hole

Claims (3)

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 container attached to the specified position of the container, A cold storage material that is placed to promote cooling, and a storage unit that stores frozen food in a position different from the cold storage material in the container, and a cold air duct that passes cold air through the storage unit is extended forward. The refrigerator is characterized in that a cold air discharge port through which cold air passes through the cold air duct is disposed in the vicinity of an upper portion of the cold storage material. The refrigerator according to claim 1, wherein a slit hole is formed in a front wall of the container, and the slit hole is formed above an installation position of the regenerator material. The refrigerator according to claim 1 or 2, wherein the regenerator material is disposed on the front side located on the door side in the container.