KR100406039B1 - reparation structure for temperature difference between top and bottom in storage of kim-chi refrigerator - Google Patents

Abstract

The present invention relates to a structure for compensating up and down temperature deviations in a kimchi storage compartment. The thickness of the upper wall of the inner case of the storage compartment 3 is increased compared to the lower wall, so that the amount of convective heat transfer from the upper portion of the storage compartment 3 to the inner case is lower. By increasing the temperature, the upper and lower temperature deviation compensation structures of the kimchi storage compartment, which can effectively prevent the formation of a high temperature portion in the upper portion of the storage compartment 3, by allowing the temperature of the upper portion to be lower than the lower portion of the storage compartment 3. To provide.

Description

Compensation structure for temperature difference between top and bottom in storage of kim-chi refrigerator}

The present invention relates to a structure for compensating the up and down temperature deviation in a kimchi storage compartment, and more specifically, by increasing the thickness of the upper wall of the inner case of the storage compartment compared to the thickness of the lower wall, the amount of convective heat transfer from the upper part to the inner case of the storage compartment is lower. By increasing the relative temperature, the temperature of the upper portion than the lower portion in the storage compartment relates to the compensation structure of the upper and lower temperature deviation in the storage compartment of the kimchi reservoir that can effectively prevent the formation of a high temperature portion in the upper portion of the storage compartment.

In general, a refrigerator is a type of air conditioner. As for the cooling cycle, a gaseous refrigerant compressed at high temperature and high pressure in a compressor loses heat as it becomes a liquid refrigerant due to high pressure while passing through a condenser. The refrigerant at low temperature and high pressure is brought into a low temperature and high pressure state, and then the refrigerant at low temperature and low pressure is vaporized while passing through the evaporator to take away heat from the surroundings. Through the process of moving to the condenser through the condensation to perform the cooling continuously.

As it is well known, recently, Kimchi storage has been developed for the sake of kimchi, which allows the kimchi to be matured and freshly stored using the principle of the refrigerator. After ripening, it maintains the proper temperature to preserve the taste of ripe kimchi for a long time.

Figure 1 is a longitudinal sectional view showing the internal structure of a conventional kimchi storage, and Figure 2 is an enlarged view showing the evaporation tube installation portion of the conventional kimchi storage.

Looking at the configuration of the conventional kimchi storage in the prior art, the storage room 3 is provided inside the kimchi storage body 6, the door (5) to open and close upwards to open and close the storage room (3) the main body (6) It is hinged to the top of the back.

In addition, a lower side of the storage compartment (3) is divided into a mechanical chamber 14, in which a compressor (2) and a condenser, etc., for cooling cycles are arranged, and a heat insulating material (4) is provided at a portion requiring heat insulation inside the main body (6). It is possible to get a thermal insulation effect by putting a lamp.

In addition, an evaporation tube 7 and a heating wire 8 are installed outside the inner case 10 of the storage chamber 3 to supply cold air or heat to the storage chamber 3.

At this time, the evaporation tube (7) and the heating wire (8) is installed while wrapping the outer surface of the inner case (10).

As shown in FIG. 2, in the structure in which the evaporation tube is installed in a conventional storage chamber, a cylindrical tube-shaped evaporation tube 7 is in close contact with an inner surface of the inner case 10 of the storage chamber 3 having a flat shape to make point contact. It is made up.

The enlarged part in the figure is shown to explain the heat transfer amount relationship in the vicinity of the inner case 10 in which the evaporation tube 7 is in contact.

As shown in the figure, a temperature drop occurs near the inner case 10 in which the evaporation tube 7 is in point contact, so that convective heat transfer ① occurs in the storage compartment 3 to the adjacent inner case 10. do.

Since the outside of the inner case 10 is made of a heat insulating material (4), the heat transferred from the storage compartment (3) is transferred along the inner case (10) by conduction.

That is, the amount of convection heat transfer (①) transmitted by convection from the inside of the storage compartment 3 to the inner case 10 is the same as the amount of conduction heat transfer (②) transmitted along the inner case 10. (Energy conservation law )

In the conductive heat transfer ② occurring in the inner case 10, the thermal conductivity is proportional to the conductive area, which corresponds to the cross-sectional area of the inner case 10.

Therefore, the larger the cross-sectional area of the inner case 10 is, the larger the amount of conduction heat transfer (②) transmitted along the inner case 10 is, so that the inner case 10 is transferred from the inside of the storage compartment 3 to the adjacent inner case 10. Convection heat transfer (①) will also increase.

At this time, when the space of the storage compartment 3 to form the inner case 10 is constant, the cross-sectional area of the inner case 10 is proportional to the thickness thereof.

As a result, when the space of the storage compartment 3 in which the inner case 10 is formed is constant, the inner case adjacent to the interior of the storage compartment 3 increases as the thickness of the inner case 10 increases within a certain range ( 10) The amount of convective heat transfer (①) is increased.

However, the inner case 10 of the conventional kimchi storage is made of the same thickness as a whole, so that the heat transfer capacity transferred from the inside of the storage compartment 3 to the adjacent inner case 10 is the same in any part of the storage compartment 3. .

That is, the heat transfer capability of absorbing heat from the inside of the storage compartment 3 regardless of the top and bottom of the storage compartment 3 and conducting along the thickness in the horizontal direction of the inner case 10 surface becomes uniform.

However, since the heat conduction in the inner case 10 is inversely proportional to the reach of the evaporating tube which absorbs heat in proportion to the cross-sectional area, the inner case of the region in which the evaporating tube 7 is in contact with the inside of the storage chamber 3. Inevitably, a temperature deviation occurs between a portion adjacent to (10) and a portion adjacent to the inner case (10) far from the contact area of the evaporator (7).

The local temperature deviation in the storage compartment 3 is such that a low density of low temperature air descends to the lower part of the storage chamber 3, and a high density of high temperature air circulates to an upper part of the storage chamber 3, and consequently the storage chamber 3. The upper temperature inside is higher than the lower temperature, causing an up and down temperature deviation.

Accordingly, the food stored in the upper portion of the storage compartment 3 has a problem that the period of maintaining freshness is shorter than the food stored in the lower portion.

Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to increase the inner case thickness of the storage compartment compared to the lower side to improve the heat conduction ability through the inner case thickness of the upper storage compartment Increased convective heat transfer from the upper part to the inner case, effectively preventing the formation of high temperature part in the upper part of the storage compartment, and compensating the upper and lower temperature deviation in the storage compartment of the Kimchi reservoir, which can reduce the temperature deviation between the upper part and the lower part of the storage compartment. To provide structure.

1 is a longitudinal sectional view showing the internal structure of a conventional kimchi storage,

Figure 2 is an enlarged view showing an evaporation tube installation portion of the conventional kimchi storage room,

Figure 3a is a perspective view showing the inner case of the kimchi storage room according to an embodiment of the present invention,

3B is a cross-sectional view taken along the line A-A of FIG. 3A;

Figure 4a is a perspective view showing the inner case of the kimchi storage room according to an embodiment of the present invention,

4B is a cross-sectional view taken along the line B-B in FIG. 4A;

Figure 5a is a perspective view showing the inner case of the kimchi storage room according to an embodiment of the present invention,

5b is a sectional view taken along the line C-C of FIG. 5a,

Figure 6a is a perspective view showing the inner case of the kimchi storage room according to an embodiment of the present invention,

6B is a fragmentary sectional view taken along the line F-F in FIG. 6A;

Figure 7 is a longitudinal sectional view showing the internal structure of the kimchi storage according to an embodiment of the present invention,

8 is a partially enlarged view for explaining a heat transfer amount relationship in the vicinity where the evaporation tube is in contact with the inner case of FIG.

* Description of the symbols for the main parts of the drawings *

2: compressor 3: storage room

6: body 7: evaporation tube

30,40,50,60: inner case

The present invention for achieving the above object, in the inner case structure of the kimchi storage compartment, the upper and lower temperature deviation in the kimchi storage compartment, characterized in that the thickness of the upper wall of the inner case is made to increase compared to the lower wall thickness. Provide a compensation structure.

At this time, the structure in which the upper wall thickness of the inner case is increased compared to the lower wall thickness is made of various construction methods.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3a is a perspective view showing the inner case of the kimchi storage compartment according to an embodiment of the present invention, Figure 3b is a cross-sectional view taken along the line A-A of Figure 3a.

As shown in the figure, the inner case 30 of the kimchi storage compartment according to the present embodiment is made of the upper wall 32 thickness greater than the thickness of the lower wall 34 on the basis of the arbitrary position.

At this time, the inner case 30 is made of a single material integrally, the upper wall 32 and the lower wall 34 of the inner case 30 is to maintain a constant thickness, respectively.

Figure 4a is a perspective view showing the inner case of the kimchi storage compartment according to an embodiment of the present invention, Figure 4b is a cross-sectional view taken along the line B-B of Figure 4a.

As shown in the figure, the body 42 of the inner case 40 of the kimchi storage compartment according to the present embodiment has the same thickness and is made integrally, the upper side of the body 42 based on any position A separate compensation member 44 having a constant thickness along the outer surface is added to increase the thickness of the upper wall of the inner case 40.

At this time, the material of the compensation member 44 added to the upper outer surface of the inner case 40 is preferably made of the same material as the inner case 40 or made of a material having a higher thermal conductivity.

5A is a perspective view illustrating an inner case of a kimchi storage room according to an embodiment of the present invention, and FIG. 5B is a cross-sectional view taken along line C-C of FIG. 5A.

As shown in the drawing, the inner case 50 of the kimchi storage room according to the present embodiment has a configuration in which the upper wall 52 and the lower wall 54 having different predetermined thicknesses are separately formed and then face each other up and down. Have

In this case, the thickness of the upper wall 52 of the inner case 50 is made thicker than the thickness of the lower wall 54, and the free ends of the upper wall 52 and the lower wall 54 contact each other in an up and down contact with each other. The inner case 50 will be formed.

An inner side of the inner case 50 constitutes a storage compartment, and each inner surface of the upper wall 52 and the lower wall 54 which are separately formed so that the inner circumference of the storage compartment is smoothly formed may be in the vertical direction. It is made to be in contact with each other in parallel.

6A is a perspective view illustrating an inner case of a kimchi storage room according to a fourth embodiment of the present invention, and FIG. 6B is a cross-sectional view taken along the line F-F of FIG. 6A.

As shown in the figure, the inner case 60 of the kimchi storage compartment according to the present embodiment is made to gradually increase in thickness as the outer surface of the inner case 60 is gradually inclined toward the upper portion based on an arbitrary position. .

That is, the thickness of the lower wall 64 is constant based on the arbitrary position of the inner case 60, and the thickness of the upper wall 62 is gradually increased toward the upper part based on the arbitrary position.

At this time, the inner case 60 is made integrally by a single material.

In addition, the inner case structure according to the present embodiment may have a structure in which the upper wall 62 and the lower wall 64 of the inner case 60 are separately formed and then face each other up and down as in the fourth embodiment.

That is, the upper wall 62 having a structure that gradually increases in thickness while the outer surface is inclined and the lower wall 64 having a predetermined thickness are separately formed, and then the inner surfaces are in contact with each other in parallel with each other in the vertical direction. Will come into contact.

Hereinafter, the operation and effects of the present invention will be described in detail.

7 is a longitudinal cross-sectional view showing the internal structure of the kimchi storage according to an embodiment of the present invention, Figure 8 is an enlarged portion for explaining the heat transfer relationship in the vicinity of the evaporation tube in contact with the inner case of FIG. It is also.

As shown in Figure 7, according to the structure of the compensation chamber up and down temperature difference of the kimchi storage room according to the present invention, the upper wall thickness of the inner case 30 is made to increase compared to the lower wall thickness, the inner case 30 Evaporation tube (7) is installed on the outer surface of the).

In such a configuration, as shown in FIG. 8, a temperature drop occurs near the inner case 30 in which the evaporation tube 7 is in point contact, and convection to the adjacent inner case 30 in the storage compartment 3. Heat transfer (③, ⑤) will occur.

Since the outside of the inner case 30 is made of a heat insulating material (4), the heat transferred from the storage compartment (3) is a conductive heat transfer (④, ⑥) occurs along the inner case 30, which is the vertical direction of the inner case surface In a structure in which the heat resistance in the longitudinal direction which is horizontal is much larger than the heat resistance in the thickness direction, the synergistic effect of heat transfer in the longitudinal direction is dominated by the increase in thickness.

At this time, looking at the heat transfer amount of the two different parts having the same area in contact with the interior of the storage compartment 3, the conduction heat transfer (④, ⑥) in the inner case 30 is the inner case 30 Since it is proportional to the cross-sectional area, the amount of conduction heat transfer ④ in the upper wall 32 having a relatively large thickness becomes larger than the amount of conduction heat transfer ⑥ in the lower wall 34.

Therefore, the amount of convective heat transfer (3) from the inside of the storage compartment 3 adjacent to the upper side 30a to the inner case 30 is transmitted to the inner case 30 from the inside of the storage compartment 3 adjacent to the lower side 30b. It becomes large compared to) quantity.

As a result, the heat absorbing amount of the upper portion in the storage compartment 3 is increased compared to the lower portion, thereby effectively preventing the formation of a high temperature portion in the upper portion of the storage compartment 3, thereby reducing the vertical deviation in the storage compartment 3.

In the inner case structure according to the present invention, the thickness of the upper wall and the lower wall of the inner case is configured differently so that the upper wall having a larger thickness has more endothermic amount from the inside of the storage compartment, and thus the upper wall of the inner case Through conduction heat transfer also increases compared to the bottom wall.

At this time, if the difference between the thickness of the upper wall and the lower wall of the inner case is too large, the effect of heat resistance in the thickness direction becomes rather large, and the vertical heat resistance of the inner case surface becomes a dominant factor, and the heat transfer amount to the upper wall of which thickness is increased is reduced. Done.

Therefore, the thickness D on the upper side within 30 times the distance 30d of the lower wall thickness d in the upper direction at any position where the thickness change of the inner case starts is three times the lower thickness d. It is preferable that the difference does not appear. (D <D <3d)

The technical idea of the present invention is not limited to the method of configuring the inner case described above in various embodiments, but may be applied to any configuration method in which the upper wall thickness of the inner case is increased compared to the lower wall thickness.

As described above, according to the compensation structure of the up and down temperature difference in the kimchi storage room according to the present invention, by increasing the thickness of the upper wall of the inner case of the kimchi storage room compared to the bottom wall thickness, convective heat transfer from the upper part to the inner case in the storage room By increasing the amount to be similar to the lower portion, there is an effect that can effectively prevent the formation of a high temperature portion in the upper portion of the storage compartment to reduce the occurrence of temperature deviation between the upper and lower portions in the storage compartment.

Claims (6)

In the inner case structure of Kimchi storage room, The upper wall thickness D within a distance 30d that is 30 times the lower wall thickness d in the upper direction with respect to the bottom surface of the inner case is not more than three times different from the lower wall thickness d. Compensation structure of the up and down temperature difference in the storage room of the kimchi storage, characterized in that it is within the range (d <D <3d). The method of claim 1, Upper and lower temperature deviation compensation structure of the kimchi storage compartment, characterized in that the upper wall thickness (D) and the lower wall thickness (d) of the inner case is formed integrally with each other. The method of claim 1, The body of the inner case is made integrally with the same thickness, the kimchi storage, characterized in that a separate compensation member made of the same material as the inner case with a certain thickness along the upper outer circumference of the body is added. Compensation structure of upper and lower temperature deviation in storage room. The method of claim 1, Upper and lower temperature deviation compensation structure of the Kimchi storage room, characterized in that the upper wall and the lower wall of the inner case is made separately having a different predetermined thickness and then facing each other up and down. The method of claim 1, Upper and lower temperature deviation compensation structure of the kimchi storage compartment, characterized in that the outer surface of the upper wall integrally formed with the lower wall of the inner case is increased inclined gradually toward the top. The method of claim 5, Upper and lower temperature deviation compensation structure of the kimchi storage room, characterized in that the upper wall and the lower wall of the inner case is made separately and then facing each other up and down.