JP2020008258A - refrigerator - Google Patents

Abstract

To provide a refrigerator which enables quick cooling of foods or a pot after cooking in a cold temperature zone, and subsequent storage in a cold temperature.SOLUTION: A refrigerator is provided in a cold room 14 with a cold storage unit 60 mounted with a cold storage material 65 frozen in the cold room, and has a quick cooling function applying an effect of the cold storage material 65 to an object 70, such as a pan or kettle with a high temperature. Providing dedicated cooling means for expediting a solidification speed of the cold storage material 65 shortens a solidification time, greatly improving the usability of the quick cooling function.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a refrigerator, and more particularly to a refrigerator room configuration.

  In general, a refrigerator has a plurality of temperature zone storage rooms, and some of the refrigerators have a rapid cooling function using a cold storage material that freezes at a freezing temperature in the freezing temperature zone storage room. (For example, see Patent Document 1).

JP 2012-017968 A

  The refrigerator described in Patent Literature 1 has a quick cooling function using a cold storage material in a freezing temperature zone storage room. Even if it is desired to keep the temperature of the target food at the refrigerated temperature by the rapid cooling, the refrigerator reaches a predetermined temperature. If not removed after cooling, there is a possibility of freezing. In addition, it is difficult to secure a sufficient space for storing a large-sized one such as a pot in the freezing temperature zone storage room.

  In order to achieve the above object, the present invention provides a refrigerator comprising a storage shelf provided in a refrigerator compartment and a cold storage material which solidifies in a refrigeration temperature zone, wherein the cold storage material is stored in a cold storage container. The unit has a configuration provided with a dedicated cooling unit for cooling the cold storage unit.

  As a result, the target food is kept in the refrigerated temperature range even if it is left after the rapid cooling is performed, so that the food can be stored without fear of freezing. In addition, since a relatively large space can be secured in the refrigerated temperature zone storage room, a large-sized one such as a pot can be placed.

  In addition, by providing a dedicated cooling means to increase the solidification rate of the cold storage material, the solidification rate at the initial stage after product operation and at the time of resolidification is improved, so that the rapid cooling function can be used repeatedly in a short time. And the frequency of use can be increased.

  The present invention reduces the time in the temperature region where bacteria are likely to occur, shortens the time in the temperature range in which bacteria are likely to occur, and allows the food to be stored in an optimal state or in a more optimal state by cooling, thereby providing a convenient refrigerator corresponding to diversification of lifestyles. be able to.

Front view of refrigerator according to Embodiment 1 of the present invention Front view showing the inside of the refrigerator Cross section of the refrigerator Front view showing the refrigerator compartment of the refrigerator Sectional view showing the refrigerator compartment of the refrigerator Sectional perspective view showing the refrigerator compartment of the refrigerator Enlarged sectional view showing the refrigerator compartment of the refrigerator Perspective view of the cold storage unit of the refrigerator Sectional view of the cool storage unit of the refrigerator Top view showing a top plate member of the refrigerator Step view showing the top plate member of the refrigerator Diagram showing changes over time in cool storage material temperature and pot temperature of the same refrigerator

  According to a first aspect of the present invention, in a refrigerator including a storage shelf provided in a refrigerating compartment and a regenerative material which solidifies in a refrigerating temperature zone, a cooling means dedicated to cooling the regenerative material is provided.

  With this, when a hot pot or the like containing the ingredients after cooking is placed on the cold storage material, the pot and the ingredients in the pot etc. are cooled quickly by the cold storage material effect, and the food in the pot etc. The effect of suppressing the growth of bacteria, suppressing the temperature influence of the surrounding ingredients, and preventing the freshness of the surrounding ingredients from decreasing is obtained.In addition, by providing a dedicated cooling means to increase the solidification speed of the cold storage material In addition, it is possible to secure the effect at the time of repeated use by shortening the time until solidification of the initially melted regenerative material and shortening the time until re-solidification after use, thereby increasing the frequency of use.

  In a second aspect, the cooling means is provided on a side surface or a bottom surface of the cold storage material by direct or indirect means.

  Thereby, the degree of freedom of food installation can be secured without providing a configuration that hinders placing food on the upper surface, and the time until solidification of the melted cold storage material can be reduced.

  In a third aspect, the cooling means is made of a high heat conductive material such as a metal material.

  Thereby, the thermal conductivity of the cooling means can be increased, the cold storage material can be directly cooled, and the time until the molten cold storage material solidifies can be shortened.

  In a fourth aspect, the cooling means is configured as a cooling air passage provided around the cold storage material.

  By circulating the air around the regenerator material, air having a lower temperature than the regenerator material flows into the vicinity of the regenerator material, and the heated air that has exchanged heat with the regenerator material can be discharged. The temperature around the unit can be lowered, and the time until the melted regenerator material solidifies can be shortened.

  In a fifth aspect, the cooling means is configured to be embedded in a storage shelf.

  Thereby, the degree of freedom of food installation can be ensured without providing a configuration that hinders placing food on the surface of the storage shelf on which the food is mounted.

  In a sixth aspect, the cooling means is configured by a space provided between a cold storage material and a storage shelf.

  As a result, cool air flows into the space between the cool storage material and the storage shelf, and the space serves as an air path, thereby lowering the temperature around the cool storage material and shortening the time until the molten cool storage material solidifies. can do.

  In a seventh aspect of the present invention, the cold storage material is stored in a cold storage container, and the cold storage container is made of a high heat conductive material such as a metal material.

  Thereby, the heat of the cold storage container cooled by the cooling means can be quickly transmitted to the cold storage material, and the time until the molten cold storage material solidifies can be shortened.

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

(Embodiment 1)
1 to 7 are diagrams illustrating the entire refrigerator and the configuration of each part, FIGS. 8 and 9 are diagrams illustrating a regenerative storage unit attached to a refrigerator compartment, and FIGS. 10 to 11 are diagrams illustrating a refrigerating unit cooling configuration.

(1. Overall configuration of refrigerator)
First, the overall configuration of the refrigerator will be described with reference to FIGS.

  1 to 3, the refrigerator according to the present embodiment includes a refrigerator body 1 having an open front, and the refrigerator body 1 includes a metal outer box 2, a hard resin inner box 3, A plurality of storage compartments are formed by partitioning plates 5, 6 and the like.

  Each storage room of the refrigerator main body 1 can be opened and closed by a pivotable door 7 or drawer-type doors 8, 9, 10 and 11 employing the same heat insulation structure as the refrigerator main body 1.

  The storage room formed in the refrigerator main body 1 includes a refrigerating room 14 at the uppermost part, a switching room 15 provided under the refrigerating room 14 and capable of switching a temperature zone, and an ice making room 16 provided beside the refrigerating room 14, a switching room 15 and It comprises a freezing compartment 18 provided between the ice making compartment 16 and the lowest vegetable compartment 17.

  The temperature of the refrigerating compartment 14 is usually about 3 ° C., which is not frozen for refrigeration and kept at 1 ° C. to 10 ° C. for suppressing the generation of bacteria in food. The vegetable room 17 has a normal setting of about 7 ° C., which is slightly higher than the temperature of the refrigerator room 14. The freezing compartment 18 is usually set at about -20C, but may be set at about -30C in order to improve the frozen storage state. The ice making room 16 has a temperature setting close to that of the freezing room 18, and the switching room 15 can change the temperature setting from the same temperature as the refrigerator room 14 to the same temperature as the freezing room 18.

  Further, a cooling chamber 23 is provided on the back of the freezing chamber 18 of the refrigerator body 1, and a cooler 24 for generating cool air and a cooling fan 25 for supplying the cool air to each chamber are installed in the cooling chamber 23. It is.

  The cooler 24 constitutes a refrigeration cycle by connecting the compressor 27, a condenser (not shown), a heat radiation pipe (not shown) for heat radiation, and a capillary tube (not shown) in a ring shape. The cooling is performed by circulation of the refrigerant compressed by the compressor 27.

  The cooling fan 25 is provided above the cooler 24, and supplies cool air to the refrigerator compartment 14, the refrigerator compartment 18, the vegetable compartment 17 and the like via the refrigerator compartment duct 28 and the refrigerator compartment duct 29 connected to the downstream side. Then, each of these chambers is cooled.

(2. Refrigerator configuration)
Next, the configuration of the refrigerator compartment will be described with reference to FIGS.

  The refrigerator compartment 14 is located at the uppermost part of the refrigerator main body 1, and a plurality of shelves 20 formed of a translucent material are detachably provided to partition the refrigerator compartment space into a plurality of upper and lower spaces. A low-temperature storage room 21 is provided.

  The refrigerator compartment duct 28 described above is provided on the back of the refrigerator compartment 14. The refrigerating compartment duct 28 is formed by covering with a heat insulating member made of styrene foam and a resin cover member on the refrigerating compartment side surface, and covers a cold air supply port of the partition plate 5 for partitioning between the refrigerating compartment 14 and the freezing compartment 18. As described above, it is mounted on the back of the refrigerator compartment and communicates with the cooling compartment 23.

  The refrigerator compartment duct 28 includes a refrigerator compartment duct discharge port 30 and a refrigerator compartment duct return port 31 and communicates with the cooling compartment 23. The refrigerator compartment duct discharge port 30 is configured to be higher than the refrigerator compartment duct return port 31.

  A refrigerating compartment damper is incorporated in the cold air supply port, and the opening and closing of the refrigerating compartment damper 37 controls the amount of cold air supplied from the cooling compartment 23 to the refrigerating compartment 14.

  The low temperature storage room 21 has a cooling temperature range of a partial temperature which is a low temperature of −5 to 3 ° C. suitable for micro-freezing storage, or a higher temperature of about 1 ° C. which is lower than the refrigerator room 14 but higher than the partial room. It can be cooled to the chilled temperature.

  A storage shelf 50 of the refrigerator compartment 14 that insulates the refrigerator compartment 14 from the low-temperature storage compartment 21 below a plurality of shelves 20 that partition the interior of the refrigerator compartment 14 into upper and lower spaces. A heat insulating material 53 made of styrene foam or the like is incorporated in the top plate member (hereinafter, the top plate member 50). A concave portion 54 is provided in the upper surface portion 50a of the top plate member 50 which is also a storage shelf in the temperature zone of the refrigerator compartment 14. The shape of the heat insulating material 53 corresponding to the concave portion 54 has a similar concave shape.

  The cool storage unit 60 is removably housed in a recess 54 provided in the top plate member 50. The upper surface of the stored cold storage unit 60 is arranged so as to be flush with the upper surface 50 a of the top plate member 50.

(3. Cool storage unit configuration)
Next, the configuration of the cold storage unit will be described with reference to FIGS.

  The cool storage unit 60 is constituted by a shell member 60a. The outer shell member 60a has a frame-shaped upper outer shell member 61 formed of a vertically divided resin material, and a cooling plate 62 formed of a high heat conductive member such as a metal material incorporated from the back side of the upper outer shell member 61. A cool storage material 65 is sealed in a bag member 64 such as a metal film inside an outer shell composed of an upper outer member 61 and a lower outer member 63 molded of a resin material for fitting and assembling. It is. Specifically, it is formed of a film bag member obtained by laminating aluminum foil.

  The cooling plate 62 is formed so as to be coplanar with the upper surface of the upper outer member 61 by subjecting the cooling plate 62 to high drawing at the center and low periphery.

  Specifically, a step portion 62a is provided on the outer peripheral portion of the cooling plate 62, and the upper outer member 61 is arranged so as to overlap the upper surface of the step portion 62a, and the upper surface portion of the cooling plate 62 and the upper outer member 61 are substantially the same. It is configured to be a surface. The provision of the step portion 62a increases the rigidity of the cooling plate 62, and can suppress the deformation of the cooling plate 62 when the volume of the cold storage material 65 changes due to the phase change.

  Further, since the cooling plate 62 forming the upper surface of the cold storage unit 60 and the upper surface of the upper outer member 61 are substantially flush with each other by forming the stepped portion 62a, the cold storage unit 60 is housed in the top plate member 50. Sometimes, it can be stored flat on the same plane as the upper surface of the top plate member 50, so that even if a container such as a pot is placed out of the cooling plate 62, it can be stably placed.

  The bag member 64 enclosing the cool storage material 65 is bonded to only the cooling plate 62 inside the cool storage unit 60 with an adhesive such as an adhesive or a double-sided tape. Further, a space 71 is formed between the cold storage material 65 in the liquid state and the upper outer member 61 and the lower outer member 63. Even when the cold storage material 65 changes phase and solidifies, heat conduction to the cooling plate 62 is maintained in the cold storage unit 60, while deformation due to contact with the upper outer member 61 and the lower outer member 63 is suppressed, and the cooling plate Since the bag member 64 is not adhered to the lower outer member 63 which is the opposite surface of the bag member 62, the damage of the bag member 64 can be prevented.

  The regenerative material 65 is made of a material that solidifies at the refrigerating temperature of the refrigerating compartment. For example, a material disclosed in JP-A-2017-003182 is used. Specifically, materials that form clathrate hydrate by cooling such as clathrate hydrate of a quaternary ammonium salt have a melting point higher than 0 ° C. (the temperature at which decomposition of clathrate hydrate starts). There are materials to have. For example, some clathrate hydrates of tetrabutylammonium bromide (TBAB) have a melting point of about 5-12C.

  Inside the cold storage material 65 sealed in the bag member 64, a heat conduction promoting member 66 such as metal wool is immersed, and the heat conduction promoting member 66 has at least one or more contact portions with the bag member 64. It is in a state of being spirally housed so as to have.

  Further, the cool storage unit 60 is provided with an installation position indicating section 67 indicating an optimum installation place of the food. Further, since the cooling plate 62 serving as the upper surface portion of the cold storage unit 60 is formed in a color different from that of the top plate member 50, it is possible to indicate at which position on the top plate member 50 the food to be rapidly cooled should be placed. it can.

(4. Cooling unit cooling configuration)
Next, the cooling configuration of the cold storage unit will be described with reference to FIGS. The cool storage unit 60 is installed in the concave portion 54 of the top plate member 50, and cool air discharged from the refrigerator compartment discharge port 30 circulates in the upper surface space of the cool storage unit 60 and returns to the refrigerator compartment return port 31. As a result, the upper surface of the cold storage unit 60 is cooled.

  A discharge port 80 into which cool air flows and a return port 81 are provided on the side surface of the recess 54. The discharge port 80 and the return port 81 communicate with the refrigerator compartment duct 28.

  By providing the insertion concave portion 82 into which a finger of a hand can be inserted in a part of the top plate member 50, the cold storage unit 60 can be easily removed from the top plate member 50, and the holding portion 83 is provided on the outer member 60a of the cold storage unit 60. A space is provided between the insertion concave portion 82 and the handle portion 83 so that cold air can flow easily.

  The insertion recess 82 is disposed on the back side of the top plate member 50 so as not to interfere with food installation.

  A concave cooling plate 84 is provided on the bottom and side surfaces of the concave portion 54 of the top plate member 50, and a bottom convex portion 85 supporting the cold storage unit 60 and a bottom concave portion 86 are provided on the bottom of the outer member 60 a of the cold storage unit 60. Is provided, and a space is formed between the concave portion 54 of the top plate member 50 and the concave portion cooling plate 84. A bottom cooling plate 87 is formed in the bottom recess 86 at the bottom of the cool storage unit 60, and the bottom cooling plate 87 and the recess cooling plate 84 are installed in contact with or close to it.

  The outer member 60a is made of a high heat conductive material such as a metal material, so that the temperature of the surface of the outer member 60a is easily transmitted to the bottom surface by heat conduction.

  Further, inside the outer member 60a, an internal heat conducting means 88 made of a high heat conductive material such as a metal material is provided, so that the temperature of the surface of the outer member 60a is easily transmitted to the bottom surface side.

  The operation and effect of the refrigerator configured as described above will be described below.

  When the temperature of the refrigerator compartment 14 becomes higher than the set temperature, the refrigerator drives the compressor 27 and the cooling fan 25, and supplies the cool air generated by the cooler 24 to the downstream side of the cooling fan 25.

  The cool air supplied to the downstream side of the cooling fan 25 is supplied to the refrigerator compartment 14, the vegetable compartment 17, the freezer compartment 18, and the low-temperature storage compartment 21 via the refrigerator compartment duct 28 and the like, and cools each compartment. The supply of cold air to each of the chambers is controlled by opening and closing a damper (not shown) to cool the refrigerator compartment 14, the vegetable compartment 17, the freezing compartment 18, and the low-temperature storage compartment 21 to their respective set temperatures.

  The cool air supplied from the cooling room 23 to the refrigerator room duct 28 circulates in the refrigerator room 14 and returns to the cooling room 23. During this time, the temperature inside the refrigerator is controlled by controlling the supply amount of cool air by opening and closing a damper based on an output from a refrigerator temperature sensor (not shown).

  Next, rapid cooling by the cool storage unit will be described with reference to FIG.

  The cold storage unit 60 housed and arranged in the top plate member 50 is normally maintained at the same temperature as the temperature in the refrigerator compartment 14. Since the upper surface of the cold storage unit 60 is flush with the surface of the top plate member 50, the cold storage unit 60 can freely use food having a size exceeding the size of the cold storage unit 60 without imposing a use restriction. be able to.

  Further, by drawing the cooling plate 62, the strength of the cooling plate 62 is increased, and the deformation of the upper surface of the cold storage unit 60 when the volume of the cold storage material 65 changes with the phase change can be suppressed.

  Thereby, the contact area with the pot or the like can be increased, the heat exchange efficiency between the cold storage unit and the pot or the like can be improved, and the rapid cooling effect can be further improved.

  The situation where rapid cooling is desired is described. There are many needs to preserve the remaining ingredients after cooking while maintaining the taste and safety until the next meal. For example, in a situation where hot food such as a pot is cooked in the summer morning, and then immediately go out, if left as it is, bacteria will develop in the food, and when returning home at night, the food will be damaged and cannot be eaten. There is. At this time, if rapid cooling can be performed after cooking in the morning, such a situation can be prevented.

  Generally, when the temperature of the food material is in a temperature range of about 20 ° C. to 50 ° C., it is said that the food poisoning bacteria are easily grown. By passing this temperature zone early, the generation of bacteria can be suppressed and safety can be ensured.

  An object 70 (about 40 ° C to 90 ° C) in a high temperature state, such as a pot in which food is cooked and a dish is left, a kettle containing uncooled boiled tea, a freshly packed lunch, and the like, a cold storage unit The cooling plate 62 is placed on the upper surface of the cooling plate 62. The object can be rapidly cooled by performing heat exchange with the cold storage material 65 via the cooling plate 62, the bag member 64, and the heat conduction promoting member 66. The regenerator material solidifies at 0 ° C. or higher, taking into account the latent heat of 100 J / g or more and the depth of supercooling, and uses a material having a melting point of 10 ° C. or lower to ensure the effect of rapid cooling.

  FIG. 12 shows a temperature change from the time when the cold storage material 65 at the normal temperature is stored at a predetermined position in the refrigerator compartment 14. The regenerative material 65 is a material having a solidification point of, for example, 5 ° C. and a melting point of, for example, 7 ° C. When the refrigerating compartment temperature is about 3 ° C., the regenerator material 65 reaches a supercooling depth near the refrigerating compartment temperature, supercools, starts to solidify after the supercooling is released, and rises to a freezing point of 5 ° C. It is maintained in a solid state at the refrigerator room temperature.

  The temperature of the cold storage material 65 rises after installing the pot as the object 70 in the solidified cold storage unit, but the latent heat of the cold storage material is used when the temperature of the object 70 passes through the temperature zone of about 20 ° C to 50 ° C. As a result, it is possible to pass through this temperature zone quickly, and the temperature once stabilizes near the melting temperature (7 ° C.) due to the latent heat effect of the cold storage material. Then, after using latent heat, the temperature rises again and melts. Through the process up to the melting, the temperature of the object can be rapidly cooled to the refrigerator compartment temperature.

  The cooling speed can be increased by effectively utilizing the latent heat of the cold storage material 65. For that purpose, it is necessary to quickly transfer the heat of the object 70 to the entire inside of the cold storage material 65 so that the entire cold storage material 65 can exchange heat. The heat conduction promoting member 66 is formed of a copper or aluminum material in a wool shape, and is provided in such a manner that it spreads over the entire inside of the bag member 64 and is in contact with the bag member 64. Thus, the cold storage material 65 located at a position away from the cooling plate 62 can be effectively used.

  When an object 70 having a high temperature is introduced into the refrigerator compartment 14, a refrigerator compartment temperature sensor (not shown) senses that the temperature inside the refrigerator compartment 14 has risen, controls opening and closing of a damper, and discharges from the refrigerator compartment duct 28. By increasing the supply of the cool air to be supplied, a synergistic effect with the cool storage unit 60 can be obtained, and the cooling speed can be further increased.

  The cold storage material 65 after the heat exchange with the object 70 is in a molten state and higher than the temperature of the refrigerator compartment 14. In order to suppress the influence of the temperature on the surrounding foodstuffs, in particular, the low-temperature storage room 21 on the lower side where the cool storage unit 60 is installed, the lower side of the concave portion 54 provided in the top plate member 50 in which the cool storage unit 60 is embedded is used. By setting the temperature range lower than usual and incorporating a heat insulating material 53 made of styrene foam or the like, the temperature effect can be suppressed.

  In addition, since the freezing point of the cold storage material 65 is 5 ° C., it solidifies in a state of being placed in the cold room 14 higher than the temperature of the cold room (about 3 ° C.). Can be used.

  In addition, by setting the melting point of the cold storage material 65 to 10 ° C. or less, it is possible to suppress the temperature rise of the peripheral food material to 10 ° C. or less. This makes it possible to realize an ideal storage temperature of 10 ° C. or less, which suppresses the growth of bacteria, not only in the food to be rapidly cooled but also in peripheral foods.

  Further, the object 70 having a high temperature must be placed on the upper surface of the cooling plate 62 of the refrigerator compartment 14 in order to obtain a rapid cooling effect. 67 are provided. For example, the cooling plate 62 is provided with a small concave circular mark, a character stamp, a logo, or the like, and the upper outer member 61 is provided with a mark, a seal, or the like to explain the function. By imprinting a small recess on the cooling plate 62, not only the reduction of the contact area with the pot or the like can be minimized, but also the strength of the cooling plate 62 is further increased, the flatness is improved, and the heat exchange efficiency is improved. The effect is also obtained.

  It is necessary to cool and solidify the cold storage material 65 in a short time in the initial operation after the product installation and in the state after the cold storage material 65 is melted after the high temperature object 70 is charged. A cooling means is provided to improve the solidification speed of the cold storage material 65.

  The cool air discharged from the refrigerator compartment discharge port 30 circulates in the upper space of the cold storage unit 60 and cools the upper space of the cold storage unit 60 and the cooling plate 62. Utilizing that the cool air accumulates on the lower side, by flowing cool air from a space intentionally provided such as the insertion concave portion 82 and the handle portion 83, convection around the cool storage unit 60 is caused to occur, so that the inside of the concave portion 54 is formed. Cool the space. At this time, a space is provided on the bottom surface of the cool storage unit 60 by the bottom convex portion 85 that supports the cool storage unit 60, and cooling over a wide range by convection of cool air is enabled.

  Further, since the recess cooling plate 84 is configured to be connected from the side surface to the bottom surface of the recess 54, the cooling effect on the bottom surface side of the recess 54 can be enhanced by the heat conduction effect of the recess cooling plate 84. Furthermore, since the bottom cooling plate 87 provided in the bottom recess 86 at the bottom of the cool storage unit 60 is arranged in contact with the recess cooling plate 84, the heat of the recess cooling plate 84 is directly transmitted, and The cooling rate at the bottom of the unit 60 can be increased. Even if the bottom cooling plate 87 does not contact the concave cooling plate 84 or does not exist, the bottom space of the cold storage unit 60 becomes easy to receive the heat of the cool air introduced by convection, and the cooling speed of the bottom of the cold storage unit 60 is reduced. Can be hastened.

  Further, the internal heat conducting means 88 formed inside the outer shell member 60a suppresses the temperature difference between the front side and the bottom side inside the cool storage unit 60, and transfers the heat cooled on the front side to the bottom side more quickly. Thereby, the cold storage material 65 can be solidified in a short time. The internal heat conducting means 88 can enhance the cooling effect by being brought into contact with the cooling plate 62, and further improve the heat conducting effect by integrating the internal heat conducting means 88 and the cooling plate 62. Can be.

  Cool air is discharged from the discharge port 80 on the side surface of the concave portion 54 of the top plate member 50, which is a dedicated cooling means of the cool storage unit 60, and an air passage circulating to the return port 81 cools the space in the concave portion 54. By adjusting the amount and time of cold air discharge from the discharge port 80 by opening and closing the refrigerator compartment damper 37, cooling according to the state of the cold storage material 65 can be performed.

  In addition, by providing a sensor for sensing the melting or solidification state of the cold storage material 65 based on the temperature or the like, the exclusive cooling means of the cold storage unit 60 is controlled, and the solidification speed of the cold storage material 65 is improved.

  As described above, by providing the exclusive cooling means for the cold storage unit 60, it is possible to secure the effect of shortening the time until the solidification of the initially melted cold storage material and shortening the time until the re-solidification after use, and the effect at the time of repeated use. It can be used more frequently.

  As described above, the refrigerator according to the present invention has been described using the above embodiment, but the present invention is not limited to this. In other words, the embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. That is, the scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  ADVANTAGE OF THE INVENTION This invention can cool and preserve | save various foodstuffs which want to store at low temperature in a refrigeration temperature zone in an optimal state or a more optimal state, and can provide a convenient refrigerator corresponding to diversification of foodstuffs. Therefore, the present invention can be applied to various types and sizes of refrigerators for home use and business use.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 3 Inner box 4 Foam insulation material 5, 6 Partition plate 7, 8, 9, 10, 11 Door 14 Refrigerator room 20 Shelf board 21 Low-temperature storage room 23 Cooling room 24 Cooler 25 Cooling fan 28 Refrigerator room Duct 30 Refrigerating room duct discharge port 31 Refrigerating room duct return port 50 Top plate member 53 Insulating material 54 Depression 60 Cold storage unit 61 Upper outer member 62 Cooling plate 63 Lower outer member 64 Bag member 65 Cold storage material 66 Heat conduction promoting member 70 Object Reference Signs List 80 discharge port 81 return port 82 insertion concave part 83 handle part 84 concave cooling plate 85 bottom convex part 86 bottom concave part 87 bottom cooling plate 88 internal heat conduction means

Claims (7)

A refrigerator comprising a storage shelf provided in a refrigerator compartment and a cold storage material which solidifies in a refrigeration temperature zone, wherein a dedicated cooling means for cooling the cold storage material is provided. The refrigerator according to claim 1, wherein the cooling means is provided on a side surface or a bottom surface of the cold storage material by direct or indirect means. The refrigerator according to claim 1, wherein the cooling unit is made of a high heat conductive material such as a metal material. The refrigerator according to any one of claims 1 to 3, wherein the cooling unit is a cooling air passage provided around the cold storage material. The refrigerator according to any one of claims 1 to 4, wherein the cooling unit is buried in a storage shelf. The refrigerator according to any one of claims 1 to 5, wherein the cooling means is a space provided between the cold storage material and the storage shelf. The refrigerator according to claim 1, wherein the cold storage material is housed in a cold storage container, and the cold storage container is made of a high heat conductive material such as a metal material.

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