KR960003710Y1 - Device to keep foods hot - Google Patents

Abstract

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Description

Refrigerated and warm food storage

1 is a cross-sectional view of a food storage device for both refrigerated and warmed according to an embodiment of the present invention,

2 is a cross-sectional view taken along the line AA ′ of FIG. 1,

3 is a detailed view of a thermoelectric module and a heat sink of a food storage device for both refrigeration and warmth according to an embodiment of the present invention,

4 is a power supply circuit diagram of a food storage device for both refrigerated and warmed according to an embodiment of the present invention,

5a to 5c is a graph showing the change in the time zone temperature of the food storage device combined with refrigeration and warmth according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

100: main body 110: insulation foam

120: lid 130: storage compartment

140: inner container 150: temperature sensor

160: outer wall 170: opening and closing clamp

200: heat exchanger 210: thermoelectric module

220: heat sink 230: circulation fan

240: motor 250: fan grill

260: thermoelectric block 300: support

310: voltage drop device 315: DC inverter

320: 110 / 220V selector switch 325: power on / off switch

330: Refrigeration / heating function selection switch 360: Temperature setting device

370 temperature display device

The present invention relates to a food storage device for both refrigeration and heating, and more specifically, in the case of selectively using the refrigerating or warming function according to the type of food, two thermoelectric modules are installed on both sides to obtain a uniform heat transfer effect. And at the same time relates to a refrigeration and hot and cold food storage device that maximizes the efficiency by using a circulation fan for rapidly changing the temperature of the heat sink.

Conventional refrigerators or warmers are not provided with a function that allows the user to switch to refrigeration or warming function according to the type of food, and there is a defect that only one function of refrigeration or warming is provided. In this case, the food that needs refrigeration must be stored in the refrigerator and the food that needs to be stored in the warmer, respectively.

In order to solve these drawbacks and inconveniences, refrigerators for both cold and warm conditions have been developed. However, there is a disadvantage that a separate specific room is required, and the heat of the heater cannot be uniformly transferred to the specific room when selecting a warming function. There are disadvantages.

In addition, although a box-type food storage device made of a heat insulating material, which can combine both a refrigeration and a warming function, has been developed and sold on the market, such a food storage device has a disadvantage in that an ice pack must be used during refrigeration.

As a kind of cold and warm food storage device as described above, the technique related to the kimchi container that can combine the refrigeration and warming function by absorbing or releasing heat inside by using a package element is disclosed in Korean Patent Application Publication No. It was disclosed in “Kimchitong,” an electronic publication of No. 90-3186 (announcement journal: May 10, 1990).

However, the above-described electron Kimchi barrel 열 has a disadvantage in that the thermoelectric module is installed to occupy a small area on one side so that the efficiency of heat transfer is low, and it takes a long time to rise or fall to a certain temperature.

In addition, the "electron Kimchi barrel" has a disadvantage in that it does not properly exhibit the refrigeration function in the summer because the heat release is not easily made when the refrigeration function is selected at a high outside temperature.

Therefore, the object of the present invention was devised in view of the above-mentioned disadvantages, and in the case of selectively using the refrigerating or warming function according to the type of food using the thermoelectric module using the Paltier effect, obtaining a uniform heat transfer effect. To this end, two thermoelectric modules are installed on both sides, and a circulation fan for rapidly exchanging the temperature of the heat sink is used to provide a food storage device for refrigeration and warming for maximum efficiency.

The constitution of the present invention for achieving the above object includes a lid, an inner container forming a storage compartment, an outer wall, a temperature sensor installed on an upper side of the inner container, and measuring a temperature of the storage compartment, an outer wall and an inner container. A heat dissipation unit having a heat insulation foam filled between the container, a main body portion including an opening / closing clamp for opening and closing the lid, a thermoelectric module using the Peltier effect, a plurality of heat dissipation pieces, and a heat sink installed in the thermoelectric module; A circulation fan for raising or lowering the temperature of the surface of the thermoelectric module through the heat sink by contacting the outside air with the heat sink, a motor for driving the circulation fan, a fan grill provided with the motor, and the A heat exchanger comprising a plurality of thermoelectric blocks mounted between the thermoelectric module and the inner container, respectively, and a voltage steel for lowering a commercial AC power supply to a predetermined level. Device, DC converter for converting dropped AC power to DC power, 110 / 220V selector switch, power to cut or supply power, ON / OFF switch, refrigeration / to change polarity of thermoelectric module And a supporting part comprising a temperature sensor for selecting a reference temperature, a temperature setting device for setting a reference temperature, and a temperature display device indicating a current temperature of the storage compartment.

With the above configuration, the most preferred embodiment that can be easily implemented by those skilled in the art to which the eye belongs, will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a food storage device for both refrigerated and heated according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA 'of FIG. 1, and FIG. 3 is a refrigerated and heated device according to an embodiment of the present invention. Detailed illustration of the thermoelectric module and heat sink of a combined food storage device.

As shown in FIGS. 1 to 3, the structure of the food storage device for both refrigeration and heating according to the embodiment of the present invention is largely divided into a main body part 100, a heat exchange part 200, and a support part 300. Is done.

The configuration of the main body 100, the temperature of the lid 120, the inner container 140, the outer wall 160 and the upper side of the inner container 140 to measure the temperature of the storage chamber 130 The sensor sensor 150, the outer wall 160 and the inner container 140 is filled between the insulating foam 110, and the opening and closing clamp 170 for opening and closing the lid 120.

In addition, the configuration of the heat exchange unit 200, the thermoelectric module 210 using the Peltier effect, the heat dissipation plate 220 is installed on the thermoelectric module 210 having a plurality of heat dissipation pieces, the circulation fan 230 and A motor 240 for driving the circulation fan 230, a fan grill 250 in which the motor 240 is installed, and a thermoelectric block 260 mounted between the thermoelectric module 210 and the inner container 140. Is done.

In addition, the structure of the support unit 300 includes a voltage drop device 310, a DC converter 315, a 110 / 220V selector switch 320, a power on / off switch 325, and a thermoelectric module. The refrigerator 210 includes a refrigerating / cold function selection switch 330 for changing the polarity of the 210, a temperature setting device 360, and a temperature display device 370 indicating a current temperature of the storage chamber 130.

4 is a power supply circuit diagram of a food storage device for both refrigerated and warmed according to an embodiment of the present invention.

As shown in FIG. 4, the power supply circuit of the food storage device for both refrigeration and heating according to the embodiment of the present invention is used with a 110 / 220V selector switch 320 having one terminal connected to a commercial AC power source. A power on / off switch 325 having one terminal connected to the AC power, and a motor 240 connected between the 110 / 220V selection switch 320 and the other terminal of the power on / off switch 325. And a voltage dropping device 310 composed of a transformer in which a primary coil is connected to the motor 240 in parallel, and a diode bridge and a smoothing capacitor having an input terminal connected to the secondary coil of the voltage dropping device 310. Consisting of a DC converter 315.

By the above-described configuration, the operation of the food storage device combined with refrigeration and warming according to the embodiment of the present invention is as follows. When the user turns on the 110 / 220V selector switch 320 and the power on / off switch 325, the commercial AC power is passed through the 110 / 220V selector switch 320 and the power on / off switch 325. At the same time as the voltage drop device 310 is applied to the primary coil of the transformer.

When a commercial AC power is applied to the motor 240, the motor 240 rotates so that the circulation fan 230 rotates.

In addition, the commercial AC power applied to the voltage dropping device 310 is converted into DC power by the DC converter 315 after the voltage drops to a predetermined level by the voltage dropping device 310.

As described above, the DC power converted through the voltage dropping device 310 and the DC converter 315 may include a temperature setting device 360 and a temperature display device 370, a refrigerating / heating function selection switch 330, and a temperature sensor. It is supplied to the thermoelectric module 210 through the functional block (Y) consisting of (150).

When the user selects the refrigerating / heating function selection switch 330 of the function block Y as the refrigerating function in order to refrigerate food, DC power is applied from the function block Y to the thermoelectric module 210 so that the internal container can be refrigerated. The heat of the storage chamber 130 is absorbed through the 140 and the thermoelectric block 260.

The heat absorbed as described above is transferred to the heat dissipation plate 9220, and the food stored in the storage compartment 130 is refrigerated by heat being released from the heat dissipation plate 220 to the outside air.

At this time, since the temperature of the heat sink 220 is higher than the outside air temperature in winter or summer, when the outside air comes into contact with the heat sink 220 through the rotating circulation fan 230, the heat sink 220 The heat of) is forcibly transferred to the outside air, thereby lowering the surface temperature of the thermoelectric module 210 even faster.

Therefore, the efficiency of the refrigerating function is increased by the action of the circulation fan 230.

On the other hand, when the user selects the refrigerating / heating function selection switch 330 of the function block (Y) as a warming function to warm the food, the thermoelectric module 210 from the function block (Y) as opposed to when the refrigeration function is selected By applying a DC power of the opposite polarity to the heat is generated from the thermoelectric module 210 is transferred to the thermoelectric block 260.

As such, the heat transferred to the thermoelectric block 260 is discharged to the storage chamber 130 through the inner container 140 to warm food stored in the storage chamber 130.

At this time, since the temperature of the heat sink 220 is lower than the external air temperature (usually the temperature of the indoor air) whether it is winter or summer, the outside air through the rotating circulation fan 230 is the heat sink 220 ), The heat of the external indoor air is transferred to the heat sink 220 so that the surface temperature of the thermoelectric module 210 rises even faster.

Therefore, the efficiency of the warming function is increased by the action of the circulation fan 230.

In addition, the food storage device for both refrigerated and warmed according to the implementation of the present invention was able to prove the effect by the effect verification test performed in the laboratory as follows.

[Test Example 1]

Test condition A

1. Outside temperature: 27 ~ 30 ℃

2. Test period: 240 hours

3. Capacity of inner container: 25ℓ

4. Contents of storage: water 15kg (initial temperature 23 ℃)

5. Thickness of insulation foam: 50mm

6. Thermoelectric module size: 40mm × 40mm × 4mm

TABLE 1

Test Example 1 obtained the temperature drop effect as shown in Table 1 using the two thermoelectric modules 210 in the test condition A to test the refrigeration function, the temperature drop rate shown in the graph of the exponential function as shown in FIG. Got it.

[Test Example 2]

Test condition B

1. Outside temperature: 27 ~ 30 ℃

2. Test period: 360 hours

3. Capacity of inner container: 25ℓ

4. Contents of Storage: Kimchi 15kg (Initial temperature 20 ℃)

5. Thickness of insulation foam: 50mm

6. Thermoelectric module size: 40mm × 40mm × 4mm

7. Salinity of Kimchi: 3.5%

TABLE 2

In Test Example 2, the test condition B was changed from the same condition as Test Condition A of Test Example 1 to test the refrigerating function, and the two refrigerators were used to provide the refrigerating effects as shown in Tables 1 and 5b. Got it. In Test Example 2, kimchi having a proper taste at PH4.3 can be stored for 15 days or more in summer, and 60 days or more because of low outside temperature in winter.

[Test Example 3]

Test condition A

1. Outside temperature: 27 ~ 30 ℃

2. Test period: 240 hours

3. Capacity of inner container: 25ℓ

4. Contents of storage: water 15kg (initial temperature 23 ℃)

5. Thickness of insulation foam: 50mm

6. Thermoelectric module size: 40mm × 40mm × 4mm

TABLE 3

Test Example 3 is for testing the warming function, and the test period is 72 hours under the same conditions as Test Condition A of Test Example 1, by applying the refrigeration function and the opposite polarity power to the two thermoelectric modules 210, Table 3 And the warming effect as shown in Fig. 5c. In this way, it can be used as a warmer can store the rice or fermented food such as Sikhye, Gamju can be stored.

Although the present invention has been described according to the above test example, within the scope and range of the present invention, for example, the inner container is made of stainless steel or aluminum, and the insulating foam can be variously modified and modified to urethane foam or the like.

As described above, in the implementation of the present invention, in the case of selectively using the refrigerating or warming function according to the type of food using the thermoelectric module using the Peltier effect, two thermoelectric modules on both sides are obtained to obtain a uniform heat transfer effect. By installing a circulation fan for rapidly changing the temperature of the heat sink at the same time, it is possible to provide a food storage device for both refrigeration and warming having an effect of maximizing efficiency.

This effect of the present invention can be used in the fields of designing, manufacturing, and selling cold and warm food storage devices.

Claims (3)

Temperature that is installed on the upper side of the inner container 140, the outer wall 160, and the inner container 140 forming the lid 120, the storage chamber 130 to measure the temperature of the storage chamber 130 Body part consisting of a detection sensor 150, the insulating foam 110 is filled between the outer wall 160 and the inner container 140, and the opening and closing clamp 170 for opening and closing the lid 9120 ( 100), the thermoelectric module 210 using the Peltier effect, and a plurality of heat dissipation pieces, the heat dissipation plate 220 provided in the thermoelectric module 210, and the outside air contacting the heat dissipation plate 210 A circulation fan 230 for raising or lowering the temperature of the surface of the thermoelectric module 210 through the heat sink 210, a motor 240 for driving the circulation fan 230, and the motor 240. Fan grill 250 is installed, and the thermoelectric block 260 mounted between the thermoelectric module 210 and the inner container 140 are each provided in plurality. A heat exchanger 200 configured, a voltage drop device 310 for dropping commercial AC power to a predetermined level, a DC converter 315 for converting the dropped commercial AC power to a DC power, and 110V / 220V selection The switch 320, the power on / off switch 325 for cutting off or supplying power, the refrigerating / heating function selection switch 330 for changing the polarity of the thermoelectric module 210, and for setting the reference temperature A food storage device for both refrigeration and warming, comprising a support part 300 comprising a temperature setting device 360 and a temperature display device 370 indicating a current temperature of the storage room 130. According to claim 1, wherein the inner container 140 and the thermoelectric block 260 is a refrigerated and warm food storage device, characterized in that formed integrally. According to claim 1, wherein the thickness of the insulation foam (9110) filled between the inner container 140 and the outer wall 160, characterized in that the food storage device for both refrigeration and warming.