JP2020008256A - refrigerator - Google Patents

Abstract

To provide a refrigerator that enables quick cooling of, e.g., a pot after cooking and food materials in a refrigeration temperature zone and subsequent storage at a refrigeration temperature.SOLUTION: A refrigerating room 14 is provided with a cold storage unit 60 including a cold storage material 65 freezing in the refrigerating room, thereby enabling quick cooling of an object 70 such as a pot or kettle having a high temperature, by way of the action of the cold storage material 65. The object can be stored in a refrigerating room temperature zone after reaching a refrigerating room 14 temperature upon completion of the quick cooling, and the usability is significantly enhanced.SELECTED DRAWING: Figure 4

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 2018-13264 A

  The refrigerator described in Patent Literature 1 has a first reject mode performed when food is not put into the storage room and a second cooling mode performed when food is put into the storage room. If the temperature detected by the temperature detecting means becomes equal to or higher than the food detection threshold value within a certain time, the supplied food can be cooled rapidly by switching from the first cooling mode to the second cooling mode. However, foods other than the input food may be overcooled. In particular, when the storage room temperature is the refrigeration temperature, there is a possibility that the surrounding foodstuffs may freeze, which greatly reduces the storage quality.

  In order to achieve the above object, the present invention provides a storage shelf provided in a refrigerator compartment, a cool air amount adjusting device for adjusting the amount of cool air for cooling the refrigerator room, a cold storage material solidifiable in a refrigerator room temperature zone, A refrigerator provided with temperature detection means for detecting the temperature of the room, wherein the cold storage material is installed on the storage shelf, and the temperature detection means is installed in an upper storage space of the cold storage material, and the cold air amount adjustment is performed. The device controls at least the opening control of the cool air amount adjusting device with time when the temperature detected by the temperature detecting means becomes equal to or higher than a predetermined threshold value.

  Thus, while the input food is rapidly cooled using the latent heat of the cold storage material, by controlling the inflow of the cool air over time, it is possible to prevent food other than the input food from being too cold.

  According to the present invention, the input food can reduce the time of the temperature range in which the input food is liable to produce bacteria, and the surrounding food does not freeze, so that the food can be cooled and stored in an optimal state or in an optimal state, and It is possible to make a refrigerator that is easy to use and compatible with the variety of products.

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 Perspective view of the cold storage unit of the refrigerator Sectional view of the cool storage unit of the refrigerator Diagram showing changes over time in cool storage material temperature and pot temperature of the same refrigerator Front view of the refrigerator air path Front view showing a refrigerator inside a refrigerator according to a second embodiment of the present invention. Sectional view showing the refrigerator compartment of the same refrigerator air path

  According to a first aspect of the present invention, a storage shelf provided in a refrigerator room, a cool air amount adjusting device for adjusting the amount of cool air for cooling the refrigerator room, a regenerator material solidifiable in a refrigerator room temperature zone, and detecting a temperature of the refrigerator room And a temperature detecting means, wherein the cold storage material is installed on the storage shelf, the temperature detection means is installed in an upper storage space of the cold storage material, and the cold air amount adjusting device is provided with When the temperature detected by the detecting means is equal to or higher than a predetermined threshold, at least the opening control of the cool air amount adjusting device is controlled by time.

  Thus, when a hot pot or the like containing the ingredients after cooking is placed on a storage shelf equipped with a cold storage material in a refrigerated temperature storage room, the pot and the like together with the food in the pot or the like are short-lived due to the cold storage material effect. Rapid cooling is possible at the same time, suppressing the growth of bacteria in foods in pots etc., and adjusting the amount of cold air that cools the refrigerated temperature storage room without using the information of temperature detection means that detects high temperature in pots etc. By doing so, it is possible to prevent the amount of cold air from increasing too much, so that it is also possible to prevent foods that are away from the pan or the like from getting too cold or freezing.

  According to a second aspect of the present invention, there is provided a storage shelf provided in a refrigerator, a cool air adjusting device for adjusting an amount of cool air for cooling the refrigerator, a cold storage material solidified in a refrigerator temperature zone, and at least two temperature detections in the refrigerator. Means, the cold storage material is installed in a lower storage shelf, one temperature detecting means is installed at a position facing an upper storage space of the cold storage material, and the other temperature detecting means is The cool air adjusting device is installed near a suction port for sucking cool air circulated in the refrigerator compartment, and when the temperature detected by the one temperature detecting means is equal to or higher than a predetermined threshold, the cool air adjusting device determines the amount of cool air by the temperature detected by the other temperature detecting means. adjust.

  Thus, when a hot pot or the like containing the ingredients after cooking is placed on a storage shelf equipped with a cold storage material in a refrigerated temperature storage room, the pot and the like together with the food in the pot and the like are short-lived due to the cold storage material effect. In addition to suppressing the propagation of bacteria in foods in pots, etc., it is possible to detect the temperature around the pots and the temperature in the remote storage space. Can be properly controlled.

  According to a third aspect of the invention, in addition to the cool air adjusting device, another cool air adjusting device for adjusting an amount of cool air for cooling the refrigerator compartment is provided.

  Thereby, since the storage rack on which the cold storage material requiring rapid cooling such as a pan is placed and the amount of cool air for cooling the other racks can be separately controlled, while further improving the cooling speed of the pan and the like, Other foods can be prevented from being too cold or frozen.

  According to a fourth aspect of the present invention, a discharge port for discharging cool air is disposed above the cold storage material at a position facing a storage space of a storage shelf in which the cold storage material is installed.

  Thereby, the cool air that has just come out of the coldest discharge port can be applied to the storage shelf on which the cold storage material requiring rapid cooling such as a pan is placed, so that the cooling speed of the pan or the like can be further improved.

  According to a fifth aspect of the present invention, the upper storage shelf, which is the top surface of the storage space of the storage shelf in which the cold storage material is installed, is made of a heat insulating material.

  In this way, when a high-temperature food such as a pan requiring rapid cooling is placed on the storage shelf on which the cold storage material is mounted, or when low-temperature cold air for rapidly cooling the high-temperature food is discharged, when the temperature fluctuation of the storage space is large. In addition, by configuring the top surface with a heat insulating material, the influence of temperature on other shelves can be reduced, and the refrigeration quality of food stored in other shelves can be improved.

  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)
FIGS. 1 to 6 and FIG. 10 are views for explaining the whole refrigerator and the configuration of each part, and FIGS. 7 and 8 are views for explaining a cold storage unit attached to the refrigerator compartment.

(1. Overall configuration of refrigerator)
First, the overall configuration of the refrigerator will be described with reference to FIGS. 1 to 3 and FIG.

  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, passes through a freezer compartment duct 29 provided in front of the cooling fan 25, and is distributed above and below the cooling fan 25, and is provided with the ice making compartment 16, the switching compartment 15, and the freezing compartment 15. The liquid is discharged into the chamber 18 through the freezer discharge port 30. Further, a part of the cold air passing through the plurality of dampers provided above the freezing room duct 29 is sent to the refrigerator compartment 14 and partially passing through the vegetable room damper 31 provided on the side of the freezing room duct 29. Is sent to the vegetable compartment 17 to cool these compartments.

  In the cooling chamber 23, a defrost heater 26 for melting frost attached to the cooler 24 is installed below the cooler 24.

(2. Refrigerator configuration)
Next, the configuration of the refrigerator compartment will be described with reference to FIGS. 3 to 6 and FIG.

  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 polystyrene foam and a resin cover member on the refrigerating compartment side surface, and covers a cold air supply port of the partition plate 5 that partitions between the refrigerating compartment 14 and the freezing compartment 18. It is mounted on the back of the refrigerator compartment and communicates with the freezer compartment duct 29 as described above.

  A first refrigerating compartment damper 32, a second refrigerating compartment damper 33, and a low-temperature storage compartment damper 34 are incorporated into the cold air supply port from the left as viewed from the left. Discharge duct 28a, the second discharge duct 28b, and the low-temperature storage room duct 28c. A first discharge port 35 is provided in the first discharge duct 28a, a second discharge port 36 is provided in the second discharge duct 28b, and a low temperature storage chamber discharge port 37 is provided in the low temperature storage chamber duct 28c. And the refrigerator compartment 14. The amount of supply of cool air from the cooling chamber 23 to the refrigerator compartment 14 is controlled by opening and closing these dampers.

  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 suction duct 28d is provided on the right side of the refrigerator compartment duct 28 and is insulated from the discharge duct, and guides cool air after cooling the refrigerator compartment 14 to the cooling compartment 23. The suction duct 28d is provided with a first suction port 38 and a second suction port 39, and communicates the suction duct 28d and the refrigerator compartment 14.

  Further, a first temperature sensor 40 and a second temperature sensor 41 are provided in the first suction port 38 and the second suction port 39, and can measure the temperature of the sucked cool air.

  The first suction port 38 is provided above the low-temperature storage room 21 that is the lowermost part of the refrigerator compartment space, and the second suction port is above the refrigerator compartment space and from the highest part of the second discharge port 36. It is provided below.

  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.

  In addition, a heat insulating material 20 a made of styrene foam or the like is provided on the lower surface of the shelf 20 above the top plate 50.

  Here, the first discharge port 35 is opposed to a space interposed between the top panel member 50 and the heat insulating material 20 a, is higher than the first suction port 38, and is located at the second position with respect to the left and right center lines of the cool storage unit 60. It is located on the opposite side of one suction port 38.

  A refrigerator compartment fan 42 is provided on the front surface of the first discharge port 35. The refrigerating compartment fan 42 is installed so as to send the cool air discharged from the first discharge port 35 toward the front storage space.

(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 configured by an outer member vertically divided. A frame-shaped upper outer member 61 molded of a resin material, 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 member 61, and fitting with the upper outer member 61 A cool storage material 65 is sealed in a bag member 64 such as a metal film inside a shell formed by a lower shell member 63 molded of a resin material system to be assembled. 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.

  In addition, by providing a concave portion (not shown) 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.

  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.

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

  When the temperature detected by the first temperature sensor 40 exceeds the threshold value, the refrigerator determines that the refrigerator compartment 14 is insufficiently cooled, drives the compressor 27 and the cooling fan 25, and cools the cool air generated by the cooler 24. It is supplied to the downstream side of the 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 compartments is controlled by opening and closing the first refrigerator compartment damper 32, the second refrigerator compartment damper 33, the low temperature storage compartment damper 34, and the vegetable compartment damper 31, respectively. 17, the freezing room 18 and the low-temperature storage room 21 are cooled to the respective set temperatures.

  The cool air supplied from the cooling chamber 23 to the refrigerator compartment duct 28 circulates through the refrigerator compartment 14, passes through the first suction port 38 and the second suction port 39, passes through the suction duct 28 d, and returns to the cooling chamber 23. To go. Based on the output from the first temperature sensor 40, the state of temperature change in the refrigerator during this time is controlled by controlling the supply amount of cool air by opening and closing the damper.

  The cool air returned to the cooling chamber 23 is cooled and dehumidified by the cooler 24, and the moisture gradually becomes accumulated in the cooler 24 as frost. Therefore, the operation of the compressor 27 and the cooling fan 25 is periodically stopped, and the temperature of the cooler 24 is increased by energizing the defrost heater 26 to perform defrost. At this time, since the warm air leaks from the opening of the cooling fan 25 and rises, all the dampers are closed to minimize the influence of heat on each storage room, thereby suppressing the deterioration of the storage quality.

  Next, the 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 a temperature of 0 ° C. or more, taking into account the latent heat of 100 J / g or more and the supercooling depth, and uses a material having a melting point of 10 ° C. or less to secure the effect of rapid cooling.

  FIG. 9 shows a temperature change from the time when the cold storage material 65 at 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 the high-temperature object 70 is put into the refrigerator compartment 14, the temperature detected by the first temperature sensor 40 becomes higher than usual. If the threshold value is exceeded, it is recognized that a high-temperature object has entered, and the control of the damper is switched to the food mode.

  In the food mode, by increasing the amount of cold air in the first refrigerator compartment damper 32, a synergistic effect with the cold storage unit 60 can be obtained, and the cooling speed can be further increased. As a method of increasing the amount of cold air, when the first refrigerator compartment damper 32 is open, the rotation speed of the cooling fan 25 is increased, the opening area of the first refrigerator compartment damper 32 is increased, There is a method of rotating 42 or the like.

  The refrigerating compartment fan 42 rotates the compressor 27 and the cooling fan 25 while the first refrigerating compartment damper 32 is open, so that the coldest and most discharged cold air is discharged to the object 70. Because it can be sprayed, the cooling speed can be the fastest.

  On the other hand, even if the refrigerator 27 is rotated when the compressor 27 and the cooling fan 25 are not operating and the first refrigerator compartment damper 32 is closed, the object 70 and the refrigerator 14 remain in the refrigerator compartment 14. By promoting heat exchange with the stored cold air, the cooling speed can be increased.

  Therefore, it is not always necessary to install the object in front of the first discharge port 35, and it is sufficient that the object 70 is installed at a position facing the storage space of the top plate member 50 in which the object 70 is stored. By being installed at a position distant from the first discharge port 35, the possibility that the cold air having a minus temperature directly hits the target object 70 can be reduced, and thus the freezing of the target object 70 can be prevented.

  In addition, when the defrost heater 26 is energized, the temperature in the refrigerator compartment 14 rises, and thus, by rotating the refrigerator fan 42, the temperature inside the refrigerator compartment 14 further rises, thereby deteriorating the refrigerator quality. It leads to that. Therefore, when the defrost heater is energized, the refrigerating compartment fan 42 is stopped, so that a decrease in the refrigerating quality can be suppressed.

  Further, the amount of cool air of the second refrigerator compartment damper 33 is controlled using the detected temperature of the second temperature sensor 41 irrespective of the detected temperature of the first temperature sensor 40. Since the second temperature sensor 41 is provided on the upper shelf, the second temperature sensor 41 is hardly affected by the temperature of the target 70 and can accurately detect the temperature of the upper target. The food in the upper stage is rapidly cooled, so that it can be suppressed from being overcooled or frozen.

  The first temperature sensor 40 and the second temperature sensor 41 do not need to be inside the suction duct 28d, but are insulated from the discharge duct, for example, inside the refrigerator compartment duct 28 formed on the back of the refrigerator compartment 14. Even if it is installed near the upper shelf plate 20 of the refrigerator compartment 14 on the surface, it is sufficient that the correlation with the space temperature in the refrigerator compartment 14 can be obtained.

  In addition, in the food mode, the control of the second refrigerator compartment damper 33 is switched to time control without providing the second temperature sensor 41, so that the upper stage can be prevented from being overcooled or frozen.

  Similarly, the second refrigerator compartment damper 33 is not provided, and both the first discharge port 35 and the second discharge port 36 communicate with the first refrigerator compartment damper 32. By controlling the first refrigerator compartment damper 32 according to the detected temperature and time, it is also possible to prevent the upper stage from being overcooled or frozen. In this case, although the amount of cool air from the first discharge port 35 also decreases, the target object 70 continues to be cooled using the latent heat of the cool storage material 65 even when there is no discharge of cool air, so that a rapid cooling effect can be obtained. .

  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.

  Further, the mounting space temperature between the top plate member 50 and the heat insulating material 20a rises when the object 70 is thrown in, and rapidly cools due to an increase in the amount of cool air flowing in from the first discharge port 35 due to rapid cooling. However, by installing the heat insulating material 20a, it is possible to suppress the influence of heat on the upper stage, and to improve the refrigeration quality of the upper stage.

  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.

(Embodiment 2)
FIG. 11 is a front view showing the refrigerator compartment, and FIG. 12 is a sectional view showing the refrigerator compartment.

  The description of the same configuration and the same technical idea as that of the first embodiment is omitted, but the present embodiment can be combined with the configuration of the first embodiment as long as there is no problem. It is possible.

  The refrigerator compartment configuration will be described with reference to FIGS.

  The first suction port 38 is connected to a fan duct 44 communicating with the refrigerator compartment fan 43, and the refrigerator compartment fan 82 is connected to an object duct 45 having an opening at a position facing the cold storage unit 60. I have. The refrigerating compartment duct 28 is installed in a direction in which the cool air sucked from the opening of the object duct 45 is sent to the first suction port 38.

  By configuring the upper surface of the object duct 45 with the heat insulating material 20a, space can be saved.

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

  In the food mode, the surrounding air around the object 70 can be positively sent to the first suction port 38 by rotating the refrigerator compartment fan 43, so that the cooling speed can be increased. Since the warmed air rises, a synergistic effect of the rising airflow and the refrigerator compartment fan 43 can be obtained by providing the opening of the object duct 45 at a position facing the regenerative unit that is located above the object 70, thereby increasing the efficiency. The well-warmed air can be sent to the suction duct 28d.

  In addition, since the warmed air around the target 70 is preferentially sucked, the surrounding food can be prevented from being warmed, and the refrigeration quality can be improved.

  In addition, even if the fan duct 44 and the object duct 45 are not provided, the refrigerator compartment fan 43 that can blow air from the object 70 side to the first suction port 38 side is provided between the first suction port 38 and the object 70. Even if it is merely installed, the warmed air around the object 70 can easily flow into the suction duct 28d, and thus a certain effect can be realized.

  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 20a Heat insulation material 21 Low-temperature storage room 23 Cooling room 24 Cooler 25 Cooling fan 28 Refrigerator compartment duct 28a First discharge duct 28b Second discharge duct 28c Cold storage compartment duct 28d Suction duct 29 Freezer compartment duct 30 Freezer compartment outlet 31 Vegetable compartment damper 32 First refrigerator compartment damper 33 Second refrigerator compartment Damper 34 Low temperature storage room damper 35 First discharge port 36 Second discharge port 37 Low temperature storage room discharge port 38 First suction port 39 Second suction port 40 First temperature sensor 41 Second temperature sensor 50 Top Face plate member 53 Insulating material 54 Depressed portion 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 unit 70 object

Claims (5)

A storage shelf provided in the refrigerator compartment, a cool air adjusting device that adjusts the amount of cool air for cooling the refrigerator compartment, a regenerator material that can be solidified in the refrigerator compartment temperature zone, and a temperature detecting unit that detects the temperature of the refrigerator compartment. In the refrigerator provided, the cold storage material is installed on the storage shelf, the temperature detecting means is installed in an upper storage space of the cold storage material, and the cool air amount adjusting device detects the temperature by the temperature detecting means. When the temperature becomes equal to or higher than a predetermined threshold, at least the opening control of the cool air amount adjusting device is controlled by time. A refrigerator provided with a storage shelf provided in a refrigerator, a cool air adjusting device for adjusting the amount of cool air for cooling the refrigerator, a cold storage material solidified in a refrigerator temperature zone, and at least two temperature detecting means in the refrigerator. , The cold storage material is installed in a lower storage shelf, one temperature detecting means is installed at a position facing an upper storage space of the cold storage material, and the other temperature detecting means is formed on the back surface of the refrigerator compartment. Installed on the inner surface of the refrigerator compartment duct, wherein the cool air adjusting device adjusts the amount of cool air based on the temperature detected by the other temperature detecting means when the temperature detected by the one temperature detecting means is equal to or higher than a predetermined threshold. A refrigerator characterized by the following. The refrigerator according to claim 1 or 2, further comprising another cool air adjusting device for adjusting an amount of cool air for cooling the refrigerator compartment, in addition to the cool air adjusting device. The discharge port which discharges cold air is arrange | positioned above the said cold storage material in the position facing the storage space of the storage shelf where the said cold storage material was installed, The Claim 1 characterized by the above-mentioned. Refrigerator. The refrigerator according to any one of claims 1 to 4, wherein an upper storage shelf serving as a top surface of a storage space of the storage shelf in which the cold storage material is installed is made of a heat insulating material.

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