KR101951207B1 - Defrosting heater for pcm(phase change material) cold storage module - Google Patents

Abstract

According to the present invention, provided is a defrosting apparatus for a phase change material (PCM) cold storage module, comprising: a heat dissipation plate having a curved shape along the outer circumference of the PCM cold storage module (referred as cold storage module) filled with a PCM, and inserted to be installed in the lower portion of the cold storage module to come in contact with an outer side surface of the cold storage module; at least one heating member installed in the heat dissipation plate to indirectly conduct heat into the cold storage module, thereby providing the heat dissipation plate with heat; and a fixing member wherein the cold storage module, the heat dissipation plate installed in the cold storage module, and an outer side of the heating member are fixed to maintain an installation position of the heat dissipation plate and the heating member.

Description

{DEFROSTING HEATER FOR PCM (PHASE CHANGE MATERIAL) COLD STORAGE MODULE}

The present invention relates to a defrost heater for a PCM cold-water cooling module.

It is important to keep the internal temperature of the low-temperature container at a constant temperature in order to prevent the decay of the stored object and to maintain the freshness.

Accordingly, the low-temperature container adopts the cooling system that changes the temperature of the specific space to the appropriate low temperature through the cool air generated in the process of circulating the compression, condensation, expansion and evaporation of the refrigerant, to provide.

At this time, the configuration of the condenser, the compressor, the expansion valve, and the evaporator are mutually connected to constitute the entire system, and the circulation of the refrigerant is achieved by the respective constitutions.

One example of such a cooling system is a cooled cooling system. The cooled cooling system is a system in which a refrigerant tube through which a refrigerant circulates is combined with a shaolinization module filled with a shaft coolant such as a phase change material (PCM) and circulates the refrigerant through an external power source Cooling is released in the direction of the cooling unit to maintain the temperature of the low temperature container. At this time, the ice-cooling module is cooled by the refrigerant circulating in the usual way and stores the cool air, and at the time when the restriction of the external power supply occurs, the cold air stored through the natural convection is discharged to the outside to keep the low temperature inside the low temperature container .

However, in the cooling-type cooling system, dew is formed on the outer circumferential surface of the quench-cooling module located on the outer side during heat exchange with the surrounding air in the process of releasing the cool air to the outside, and then the dew is frozen by the low temperature of the cooling- A condensation phenomenon that forms a frost or a frost is generated.

As the driving time of the cooling system becomes longer, the thickness becomes gradually thicker due to the condensation phenomenon. As a result, the heat exchange between the cooling unit and the surrounding air is not properly performed, and the refrigerating or cooling effect per unit time There has been a problem of remarkably deteriorating.

Accordingly, a technique for defrosting or defrosting frost formed in the cooling device has been developed in various angles. As a part of this technique, Korean Patent Laid-Open No. 10-2011-0075326 filed on December 28, 2009 (Hereinafter referred to as " prior art ", hereinafter referred to as " prior art ", hereinafter referred to as " prior art ", hereinafter).

However, in the related art, it is difficult to completely remove the gaps formed by the saw blades directly formed on the outer circumferential surface of the hot-water cooling module. Therefore, heat exchange between the hot-water cooling module and the ambient air is not properly performed, There is a problem that it is difficult to maintain the temperature of the substrate.

Also, in the related art, when a shock applied to the casting is transferred to the spindle cooling module to remove the spindle formed on the outer circumferential surface of the spindle cooling module, component damage of the spindle cooling module results in damage to the cooling system I could.

In addition, in the conventional cooling-type cooling system, the whirling cooling module is installed on the ceiling of the low-temperature container, so that the upper side of the whirling cooling module can be cooled by natural convection on the installation structure. On the other hand, As the condensed water generated by the natural convection is cooled down, the condensed water flows downward. Therefore, the condensed water is continuously generated as compared with the upper side. As the time passes, the thickness of the condensed water becomes thicker and the cooling by natural convection becomes difficult.

It is an object of the present invention to provide a technique for defrosting a casting formed on the outer circumferential surface of a water-cooling module while minimizing damage to the whirling module.

It is another object of the present invention to provide a technique for selectively defrosting a lower portion of a heat-shrinkable module which is difficult to cool by natural convection.

In order to achieve the above object, a defrost heater for a PCM squeeze cooling module according to an embodiment of the present invention includes a PCM squeeze cooling module (hereinafter referred to as a " squeeze cooling module ") in which a phase change material A heat radiating plate having a shape bent along an outer periphery and fitted to a lower portion of the whirling cooling module so as to be in contact with an outer surface of the whirling cooling module; At least one heating member installed outside the heat dissipating plate to indirectly transmit heat to the constriction cooling module to provide heat to the heat dissipating plate; And a fixing member which surrounds and fixes the outside of the heat dissipating plate and the heating member installed in the constriction cooling module and the constriction cooling module so as to maintain the installation position of the heat dissipation plate and the heating member, When a heat of a certain temperature or more is provided from the heating member, defrosting of the condensed state occurs under the PCM shaking cooling module.

In this case, the heat sink includes a coupling portion into which the heating member is inserted by being recessed by a predetermined depth in the direction of the cooling / cooling module, and the coupling portion is formed by opening the one side, The outer circumferential surface of the engaging portion may have a curvature corresponding to the heating member.

In addition, the heating member is provided in a wire shape and includes a heating element on the inner side and an insulator on the outer side, and the heating member has a curvature and a diameter corresponding to the coupling portion, and can be fitted to the coupling portion.

As described above, the present invention has the following effects.

First, in the cold-storage module installed inside the low-temperature container, the upper part is natural cooling more easily than the lower part in terms of its installation structure. Therefore, the generated property on the lower side of the cooling module is hard to be removed through natural cooling. The heat sink is coupled to the lower side and the heat is supplied to the heat sink through the heating member to defrost the lower side of the heat sink which is difficult to naturally cool down due to the heat conducted through the heat sink, .

Second, the heat is not directly applied to the cooling unit for defrosting the cooling unit, but the heat directly supplied to the cooling unit by the heating member is conducted to the cooling unit, thereby defrosting. It is possible to prevent defrosting of the cold-storage module.

Third, the durability of the condenser and the defrost heater for the PCM shrinkage module can be improved in order to minimize the contact time between the condensed water moving downward of the shake cooling module and the heat sink, and to induce the free fall of condensed water.

Fourthly, the heat sink extends long along the longitudinal direction of the whirling module, and surrounds the entire lower portion of the whirling module, and a wire-shaped heating member is inserted into one side of the heat sink at a long distance The heat provided to the heat sink by the heating member heats the entire heat sink provided on the lower portion of the heat sink module and uniformly conducted to the lower portion of the heat sink module to thereby increase the defrost efficiency of the lower portion of the heat sink module, have.

FIG. 1 is a perspective view illustrating a defrost heater for a PCM shroud cooling module mounted on a PCM shroud cooling module according to an embodiment of the present invention.
2 is a bottom perspective view illustrating a defrost heater for a PCM shovel cooling module mounted on a PCM shoehorn module according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a defrost heater for a PCM shoehorn module mounted on a PCM shoehorn module according to an embodiment of the present invention.
4 is a cross-sectional view illustrating a heat sink of a defrost heater for a PCM shoveling module according to an embodiment of the present invention.

The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for simplicity of explanation.

FIG. 1 is a perspective view illustrating a defrost heater for a PCM hot-watering module mounted on a PCM hot-watering module according to an embodiment of the present invention. FIG. 2 is a cross- FIG. 3 is a cross-sectional view illustrating a defrost heater for a PCM shroud cooling module mounted on a PCM shroud cooling module according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view illustrating a defrost heater according to an embodiment of the present invention. Sectional view showing a heat sink of a defrost heater for a cold storage module.

<PCM On the cooling cooling module  Description>

Before describing the present invention, the PCM shaft cooling module will be described with reference to FIGS. 1 to 3. The shaft cooling module 200 is cooled and / or phase-changed into a solid phase at a low temperature And a pair of reservoirs 210 filled with a coolant such as a phase change material (PCM) that releases cold heat and maintains the ambient air at a low temperature when the ambient temperature rises.

Here, the pair of the storage members 210 are in contact with each other, and the insertion grooves 211 each having a semicircular cross-sectional shape are formed on one surface thereof. At this time, the refrigerant pipe 300 through which the refrigerant circulates can be inserted into the insertion groove 211 formed in the pair of the reservoirs with the pair of storage members being coupled.

At this time, the outer circumferential surface of the storage body 210 may have a curved shape so that the length of the cross section where the insertion groove 211 is located is constant.

In addition, the refrigerant pipe 300 can cool the periphery by evaporating the refrigerant, and cool the spirally coiled material in the spiral-cooling module 200 composed of the pair of the storage elements 210.

In addition, the pair of the storage elements 210 may be coupled by a coupling means C such as a clamp or a screw. In some cases, the PCM constriction module may include a single storage body 210 Lt; / RTI &gt;

An inlet (not shown) and a lid (not shown) for covering the inlet may be provided on one side of the storage body 210 so as to fill the storage body 210 with the cooling water.

<PCM For cold cooling module In the defrost heater  Description>

1 to 4, a defrost heater 100 for a PCM shaolining module according to an embodiment of the present invention includes a heat sink 110, a heating member 120, and a fixing member 130.

The heat sink 110 has a shape bent along an outer periphery of a PCM shroud module 200 (hereinafter, referred to as a 'shovel cooling module') having a phase change material filled therein. The shroud 110 is connected to the shroud cooling module 200, (200).

Since the heat sink 110 is in contact with the outer circumferential surface of the water cooling module 200 while covering the lower part of the water cooling module 200, the condensation generated in the outer circumferential surface of the water cooling module 200, which contacts the heat sink 110, As shown in Fig.

Here, the heat sink 110 may be made of a heat conductive material, for example, aluminum (Al). At this time, the heat sink 111 may have a thickness of 0.7 mm to 1.2 mm.

The heat sink 110 includes a coupling portion 111, which is recessed by a predetermined depth in the direction of the cooling / cooling module, to which a heating member 120 to be described later is inserted.

The outer circumferential surface of the engaging portion 111 which is in contact with the heating member 120 inserted through the one opened side may have a curvature corresponding to the heating member 120 .

At this time, the engaging portion 111 has an insertion portion 111a and a curved portion 111b. The insertion portion 111a is one side of the engaging portion 111 opened to insert the heating member 120, (111b) means the outer circumferential surface of the coupling portion 111 excluding the insertion portion 111a.

As shown in FIGS. 1 and 2, the heat sink 110 has both ends in the width direction below the refrigerant pipe 300 located at the uppermost end of the refrigerant pipe 300 inserted in the compression cooling module 200 And is positioned above the refrigerant pipe (300) located at the lowermost end, so as to surround a part of the outer peripheral surface of the shaft cooling module (200). At this time, the heat sink 110 may extend along the longitudinal direction of the water cooling module 200 to surround the entire lower portion of the water cooling module 200.

At least one engaging portion 111 is disposed on one side of the heat dissipating plate 110 and at least one engaging portion 111 is formed to surround the entire lower portion of the heat dissipating plate 110 along the longitudinal direction of the constriction cooling module 200 And may be located along the longitudinal direction of the water cooling module 200. At this time, the engaging portion 111 may be located at a position adjacent to the lower side of the water cooling module 200.

As the engaging portion 111 is positioned along the longitudinal direction of the ice-cooling module 200, the heating member 120 inserted into the engaging portion 111 may be coupled to the shaft cooling module 200 along the longitudinal direction thereof. The heat provided to the heat sink 110 by the heating member 120 heats the entire heat sink 111 provided at the lower portion of the constriction cooling module 200 and can be uniformly conducted to the lower portion of the water cooling module 200 . That is, the defrosting formed on the outer circumferential surface of the heat sink 111 located at the outermost periphery of the defrost heater 100 for the PCM hot-watering module combined with the hot-water cooling module 200 is effectively defrosted, .

At least one heating member 120 may be provided on the heat sink 110 so that heat is indirectly conducted to the quench-cooled module, thereby providing heat to the heat sink 110.

Here, the heating member 120 may be provided in a wire shape, and a heating element may be provided on the inner side and an insulator may be provided on the outer side. The heating member 120 has a curvature and a diameter corresponding to the engaging portion 111 and can be engaged with the engaging portion 111. [ That is, the heating member 120 is inserted into the engaging portion 111 through the insertion portion 111a of the engaging portion 111 so that the outer peripheral surface of the heating member 120 is curved portion 111b As shown in FIG.

In this case, it is natural that the curvature and the diameter of the coupling portion 111 and the heating member 120 correspond to each other, as well as the case where a certain difference occurs. For example, if the engaging portion 111 has a diameter of 3 mm, the diameter of the heating member 120 may have a length of 2 mm to 4 mm.

Here, if the heating member 120 has a smaller diameter than the diameter of the coupling part 111, there is a risk that the heating member 120 will fall out of the coupling part 111, It may be difficult for the heating member 120 to be smoothly inserted into the engaging portion 111 if the diameter of the engaging portion 111 is larger than the diameter of the engaging portion 111. [ Therefore, since it is provided so as to correspond to the diameter of the engaging portion 111, its assembling ability can be facilitated.

When the heating member 120 is inserted into the engaging portion 111 and then the temperature adjusting portion T is adjusted for defrosting the whirling cooling module 100 to drive the heating member 120, Even if the diameter of the heating member 120 is smaller than the diameter of the coupling part 111 by a predetermined length, the outer circumferential surface of the heating member 120 is not coupled to the coupling part 111, And the curved surface portion 111b. At this time, the temperature control unit T may be a device for applying an electrical signal so that the heating member 120 can generate heat at an appropriate temperature.

For example, the heating member 120 may be a silicon-insulated heater that is formed by winding a heating element such as nichrome wire, copper nickel, or iron chromium wire in a circumferential direction on a glass fiber core and then finishing with a silicone resin as an insulator. At this time, the insulator surrounding the outer periphery of the heating member 120 is made of a flexible material, and can be easily fitted to the coupling portion 111. In addition, the heating member 120 is excellent in electrical insulation, water resistance, and heat resistance, and can provide heat to the heat sink 110 at a temperature of 0 ° C to 200 ° C.

At this time, the heating member 120 provides a heat of a certain temperature or more to the heat sink 110, which is made of a material having heat transfer characteristics, and in this case, it is possible to defrost condensed frost or frost in the lower part of the water cooling module 200 .

The fixing member 130 surrounds and fixes the outside of the heat sink and the heating member installed in the constriction cooling module 200 and the constriction cooling module 200 so that the installation position of the heat sink 110 and the heating member 120 is maintained.

At this time, the fixing member 130 is bent in a U-shape so as to extend from the bending portion 131 and the bending portion 131 surrounding the cooling unit 200, the heat sink 110, the heating member 120, And a fixing part 132 fixed by a fixing means F such as a screw, a bracket or the like.

For example, the fixing part 132 may be fixed to the ceiling of the low-temperature container, which may be provided in the refrigerator or in a separate reservoir, and the constriction cooling module 200, the heat sink, So that the respective mounting positions can be maintained without being dropped downward by the support portion 131. [

The fixing member 130 may be made of a material such as stainless steel to prevent corrosion.

Briefly described with reference to FIGS. 1 and 2, the coaxial cooling system includes a compressor 200 and a defrost heater 100 for a PCM compression-cooling module. The coaxial cooling system includes a compressor for compressing refrigerant, A condenser for condensing the compressed refrigerant, an expansion valve for reducing the condensed refrigerant, and a refrigerant pipe 300 for evaporating the refrigerant to cool the surroundings.

At this time, the refrigerant pipe (300) extends from the expansion valve to the compressor through the compression cooling unit, and the refrigerant passing through the compressor, the condenser and the expansion valve evaporates while flowing along the refrigerant pipe (300) Cooling the cooled axial coolant.

More specifically, the compressor compresses the refrigerant sucked into the compressor to generate a high-temperature and high-pressure refrigerant, and moves the refrigerant to the condenser. In this process, the refrigerant passing through the condenser is liquefied, Condensed. Subsequently, the refrigerant in the low-temperature and high-pressure state through the condenser is depressurized through the expansion valve through which the moving area is narrowed, thereby achieving a low-temperature and low-pressure state. Thus, the refrigerant which is provided at the low temperature and low pressure state through the expansion valve moves to the refrigerant pipe 300 and undergoes a heat exchange process with the air around the refrigerant pipe 300, thereby evaporating and lowering the temperature of the air to be heat-exchanged.

Accordingly, the water-cooling module 200 can provide the effect of refrigeration or freezing by lowering the temperature in the space through heat exchange for absorbing the heat of the ambient air on the space where the water-cooling module 200 is installed and discharging the stored cooling air.

In this case, in the cooling-type cooling system, dew, that is, condensed water is formed on the outer circumferential surface of the water-cooling module 200 located outside the heat exchange with the surrounding air during the process of discharging the cold air to the outside, It can be frozen by the low temperature of.

On the other hand, the lower part of the constriction cooling module 200 is a condensed water flowing downward from the upper part of the constriction cooling module 200. In this case, the upper part of the constriction cooling module 200 can be cooled by natural convection, And the thickness of the wall becomes thicker as time goes by, so that there is a problem that cooling by natural convection is difficult.

More specifically, heat exchange with ambient air is performed using low-temperature thermal energy that is naturally cooled by the water-cooling module 200, and the generated condensed water freely falls downward. As the condensed water moves downward along the outer circumferential surface of the water cooling module 200, the lower side of the water cooling module 200 is constantly deformed as compared with the upper side, Which makes it difficult to maintain the temperature.

Accordingly, the defrost heater 100 for the PCM sintered cooling module of the present invention defrosts the lower side of the spindle cooling module 200, which is difficult to naturally cool down. At this time, rather than directly heating the spindle cooling module 200 for defrosting, The direct heat is supplied to the heat sink 110 through the heating member 120 and heat is conducted to the instantaneous cooling module 200 through the heat sink 110 to prevent damage to the instantaneous cooling module 200, It is possible to perform defrosting on the lower side. Further, the temperature change inside the low-temperature container can be minimized.

The defrost heater 100 according to the present invention minimizes the contact time between the condensed water moved to the lower side of the compressor cooling module 200 and the heat sink 110 and prevents the freezing of the condensed water from occurring in the compressor cooling module 200, And the durability of the defrost heater 100 for the PCM cooling and cooling module can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. And the scope of the present invention should be understood as the scope of the following claims and their equivalents.

100: Defrost device for PCM shrink cooling module
110: heat sink
111:
111a: Insertion part
111b: curved portion
112:
120: Heating member
130: Fixing member
131:
132:
200: PCM Cooling Module
210:
211: insertion groove
300: Refrigerant pipe
F: Fixing means
C: Coupling Means
T: Temperature control unit

Claims (3)

As a defrost heater for PCM (phase change material)
(Hereinafter, referred to as a &quot; cold-shrinkable module &quot;) having a phase change material (PCM) filled therein, and extending along the longitudinal direction of the hot- A heat radiating plate fitted to a lower portion of the whirling cooling module so as to be in contact with an outer peripheral surface of the whirling cooling module;
At least one heating member installed outside the heat dissipating plate to indirectly transmit heat to the constriction cooling module to provide heat to the heat dissipating plate; And
And a fixing member that surrounds and fixes the outside of the heat dissipating plate and the heating member installed in the constriction cooling module and the constriction cooling module so that the installation position of the heat dissipation plate and the heating member is maintained,
Wherein the heat sink is made of a material having a heat transfer characteristic and defrosts the condensed state in the lower part of the PCM shrinkage cooling module when heat of a predetermined temperature or more is provided from the heating member,
Wherein the heat sink includes a coupling portion into which the heating member is inserted and coupled by being recessed to a predetermined depth in the direction of the shaft cooling module,
Wherein the engaging portion is opened at one side and the outer circumferential surface of the engaging portion abutting the heating member inserted through the opened side has a curvature corresponding to the heating member,
The coupling portion may be positioned to extend along the longitudinal direction of the whirling module so that the heating member may also be coupled to the coupling portion to extend along the longitudinal direction of the whirling module,
Wherein the heating member is a silicone-insulated heater which is formed in a wire shape and has a heating element on the inner side and a silicone resin on the outer side,
The heating member may have a curvature and a diameter corresponding to the coupling portion,
Defrost Heater for PCM Cooling Module. delete delete

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