KR200424088Y1 - Cold storage refrigeration system with liquid film defroster - Google Patents

Abstract

The present invention relates to a cold storage refrigeration system having a defrosting device, and more particularly, to a cold storage refrigeration system having a defrosting device capable of defrosting by forming a liquid film.

 A refrigeration refrigeration system having a liquid film defrosting device according to the present invention includes a refrigeration module containing a phase change material, a cooling tube installed to penetrate the inside of the cold storage module, and a refrigerating device for circulating refrigerant in the cooling tube. In the cold storage refrigeration system, the sprinkling pipe connected to the water supply pipe and installed in the longitudinal direction of the cold storage module on the upper side of the cold storage module, and having a plurality of through holes toward both sides of the cold storage module, and the through hole of the water spray pipe. And a guide member having an inclined surface inclined at a predetermined angle toward the upper inner side in contact with the edges of both sides of the cold storage module in the longitudinal direction so as to guide the water discharged to the both sides of the cold storage module. The through hole of the tube is characterized in that the discharged water is discharged toward the inclined surface of the cold storage module.

Cold storage module, cooling pipe, freezing device, watering pipe, guide member

Description

Cold storage refrigeration system with liquid film defrosting device {COLD STORAGE SYSTEM HAVING A FLUID FILM DEFROSTER}

1 is a perspective view of an embodiment of a cold storage refrigeration system having a liquid film defrosting apparatus according to the present invention installed in the refrigerator

Figure 2 is an explanatory view of a cold storage refrigeration system having a liquid film defrosting apparatus according to the present invention shown in FIG.

Figure 3 is a perspective view of one embodiment of a liquid film defrosting device in a cold storage refrigeration system having a liquid film defrosting device according to the present invention

4 is a cross-sectional view taken along the line A-A of FIG.

5 is an explanatory diagram of the principle that the liquid film is formed and defrosted when the defrosting apparatus of FIG.

6 is an explanatory view of various embodiments of an airflow flow path in a cold storage refrigeration system having a liquid film defrosting device according to the present invention.

7 is a perspective view of a refrigeration system using a conventional refrigeration apparatus

<Short description of drawing symbols>

100 Refrigerator 110 Compressor

120 condenser 130 receiver

140 Expansion valve 150 Cooling line

210 case 211 bulkhead

212 Air passage 213 Storage module compartment

220 Storage Module 230 Stirring Pan

240 inlet 250 outlet

300 Defroster 310 Water Supply Pipe

320 solenoid valve 330 connector

340 water pipe 350 drain pipe

360 water 370 guide member

371,372 Slope 400 Sprinkler Control System

500 Cold Storage I Frost

The present invention relates to a cold storage refrigeration system having a defrosting device, and more particularly, to a cold storage refrigeration system having a defrosting device capable of defrosting by forming a liquid film.

7 is a perspective view of a refrigeration system using a conventional freezer.

The conventional refrigeration apparatus 10 is provided with a compressor, an evaporator, a condenser, etc. for generating cold air by compressing and expanding a circulating refrigerant. As illustrated in FIG. 7, a cooling unit 20 for providing cold air is installed inside the refrigerating warehouse 40, and an apparatus for compressing and condensing the circulating refrigerant is installed outside. The refrigeration system using the conventional refrigeration apparatus 10 as described above, the refrigeration apparatus 10 must be frequently turned on / on in order to maintain a constant temperature of the object stored in the refrigerating warehouse (40). In particular, when the temperature range of the refrigerating chamber to be maintained is narrow, the on / off frequency of the refrigerating device 10 is increased, so that the consumption of starting power of the motor is increased, and the durability of the refrigerating device 10 is reduced. In addition, the noise caused by the on / off of the frequent freezing device 10 may cause a complaint.

Instead of a refrigeration system using a refrigerating device having the above problems, a refrigerated refrigeration system using a refrigerating material (phase change material-PCM, Phase Change Material) may be used. A cold storage refrigeration system is a device for keeping cold storage at a low temperature by storing cold heat in a cold storage module containing a phase change material (cooling material). The cold storage refrigeration system arranges at least one cold storage module at regular intervals, and each cold storage module is installed to pass through a cooling pipe connected to the freezing device to cool the cold storage material. The cooling tube is connected to the refrigerating device so that cold refrigerant flows.

The cold storage refrigeration system can maintain a stable cold storage temperature, it is possible to save energy by reducing the number of on / off of the motor by the operation of the uniform refrigeration device. In addition, the cold storage refrigeration system can reduce the operating cost by operating the freezer at night using low-cost late night power, and can operate the refrigeration unit during the designated day time even in the daytime operation to prevent civil complaints caused by noise. have. In particular, the cold storage refrigeration system has the advantage of maintaining the freshness of the product stored in the cold storage can be maintained in the cold temperature for a predetermined time even in the event of power failure or breakdown of the freezer.

The cold storage refrigeration system has a plurality of cold storage modules, and the rotating fan circulates the air inside the cold storage module to pass through the cold storage module so that the cold air stored in the cold storage module is evenly delivered to the cold storage. At this time, if frost is stuck to the surface of the cold storage module, heat transfer from the surface of the cold storage module to the air circulated by the fan worsens, and thus the cold storage of the refrigerated warehouse cannot be maintained.

In addition, it is necessary to insulate the cold air from the accumulator module while maintaining the cold storage, and to form the outlet of the cold air at an appropriate position.

An object of the present invention is to provide a cold storage refrigeration system having a liquid film defrosting device capable of effectively removing frost stuck to the surface of the cold storage module of the cold storage refrigeration system. In addition, an object of the present invention is to provide a cold storage refrigeration system having a structure that is insulated so that cold air does not flow out from the cold storage module, and can effectively discharge cold air for cold storage.

A refrigeration refrigeration system having a liquid film defrosting device according to the present invention includes a refrigeration module containing a phase change material, a cooling tube installed to penetrate the inside of the cold storage module, and a refrigerating device for circulating refrigerant in the cooling tube. In the cold storage refrigeration system, the sprinkling pipe connected to the water supply pipe and installed in the longitudinal direction of the cold storage module on the upper side of the cold storage module, and having a plurality of through holes toward both sides of the cold storage module, and the through hole of the water spray pipe. And a guide member having an inclined surface inclined at a predetermined angle toward the upper inner side by contacting the edges of the both sides of the cold storage module and the longitudinal direction to guide the water discharged to the both sides of the cold storage module. The through hole is formed so that the discharged water is discharged toward the inclined surface of the cold storage module.

 When water is supplied to the water pipe through the water supply pipe, the water pipe serves as a header, and the water stream discharged through the water hole through the water pipe and collided with the inclined surface is discharged from the neighboring through hole and collided with the water in the water inclined surface. They are connected while spreading to form a uniformly continuous liquid film and fall along the sides of the cold storage module. Therefore, frost stuck to the side of the cold storage module is effectively removed at the same time.

In addition, the cold storage refrigeration system having a liquid film defrosting apparatus according to the present invention, the solenoid valve installed in the connection portion of the water pipe and the water supply pipe, so that the defrosting can be automatically performed, and the water spray for controlling the opening and closing of the solenoid valve It is preferable to further include a control device. In addition, in order to effectively remove frost, it is more preferable to remove the frost by opening and closing the solenoid valve for a predetermined time with the water spray control device before operating the refrigerating device to cool the cold storage module.

In addition, the cold storage module of the cold storage refrigeration system having a liquid film defrosting device according to the present invention is installed in the heat insulation case, the case is partitioned into the internal storage of the cold storage module receiving portion and the air passage, the cold storage module through the lower portion A partition wall is installed at a predetermined distance from the bottom of the case so that the receiving portion and the air passage communicate with each other, and the inlet is formed in the upper portion of the case so as to communicate with the air passage, and the upper portion of the case interlocks with the storage module. Outlets are formed in. Therefore, it is insulated so that cold air does not flow out from the cold storage module, and has a structure capable of effectively discharging cold air for cold storage.

In addition, the case has an outlet formed in the upper portion of the case so as to communicate with the air passage, and by forming an inlet in the upper portion of the case so as to interlock with the storage module storage portion it is possible to effectively discharge the cold air as described above.

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

1 is a perspective view of one embodiment of a cold storage refrigeration system having a liquid film defrosting apparatus according to the present invention installed in the refrigerator, Figure 2 is a description of the cold storage refrigeration system having a liquid film defrosting apparatus according to the present invention shown in FIG. It is also.

The refrigeration refrigeration system provided with the liquid film defrosting device of the present embodiment includes a refrigeration unit (220) for exchanging heat with a refrigeration unit (100), a cooling tube (150) through which low-temperature refrigerant flows by the operation of the refrigeration unit (100), and The defrosting device 300 removes the frost I generated on the side surface of the cold storage module 220, and the sprinkling control device 400 controlling the operation of the defrosting device 300. In addition, the door is installed on one side and the refrigeration module 220 is installed on the inside, and includes a refrigerated warehouse 500 to maintain the freshness of the stored goods by maintaining a constant refrigeration temperature of the inside.

The refrigerating apparatus 100 is installed outside the refrigerating warehouse 500 and stores a compressor 110 for compressing the refrigerant, a condenser 120 for condensing the refrigerant compressed by the compressor 110, and stores the condensed refrigerant. The receiver 130, an expansion valve 140 for expanding the refrigerant stored in the receiver 130 to be dropped at a low temperature, and the refrigerant cooled to a low temperature by the expansion valve 140 are included in the storage module 220. It includes a cooling pipe 150 installed through the inside.

The expansion valve 140 expands the refrigerant transferred through the liquid flow path pipe connected to one end of the receiver 130 and penetrates the PCM accumulator encapsulated in the storage module 220 installed inside the refrigerating warehouse 500. The PCM accumulator is cooled by heat exchange with the cooling tube 150.

Meanwhile, the cold storage module 220 is filled with PCM cold storage material and spaced at regular intervals to be installed in the cold store 500, and a case in which a heat insulating material is installed along the outer surface to block cold air of the cooled cold storage module 220. (210), the stirring fan 230 is installed on the top of the cold storage module (220) to mix the indoor air in the refrigerating warehouse (500), the inlet port (240) and the outlet port (2) installed on both sides of the stirring fan 230 ( 250).

The refrigeration module 220 is a plurality of selectively arranged at a predetermined interval depending on the amount of freezing, in the present invention, the first storage module 220a and the second storage module 220b and the third and fourth storage module 220b, 220d).

The inside of the plurality of cold storage modules 220 installed as described above is filled with PCM cold storage material, the refrigerant converted to low temperature through the expansion valve 140 of the refrigerating device 100 inside each of the cold storage module 220 The PCM accumulator is cooled by heat exchange while flowing through the cooling pipe 150 installed to pass through. As such, the refrigerant passing through the cold storage module 220 is sucked into the compressor 110 through the gas phase flow channel and is again compressed and circulated through the refrigerant.

As described above, a case 210 made of a heat insulating material is used on an outer circumferential surface of the plurality of storage modules 220 to maintain a cooled state by heat exchange of the storage module 220, and the inside of the case 210 is stored in the storage module. Partitioned into the receiving portion 213 and the air passage 212, the partition wall 211 at a position spaced a predetermined distance from the bottom of the case 210 so that the cold storage module receiving portion 213 and the air passage 212 communicates through the lower portion Install).

In addition, the stirring fan 230 is installed at a predetermined interval in the upper direction of the storage cooling module 220, accommodating the storage air cooling module of the case 210 in the indoor air of the refrigerating warehouse 500 on both sides of the stirring fan 230 Inlet 240 is sucked into the portion 213 is installed. In addition, the indoor air sucked through the inlet 240 is cooled while passing through the plurality of cold storage modules 220, and the air cooled by passing through the air passage 212 through the open lower surface of the partition 211 is the outlet ( 250 is discharged to the refrigerated warehouse (500). Therefore, by repeatedly inhaling and discharging the air in the refrigerator 500, it is possible to maintain a stable cold temperature of the refrigerator 500.

However, the refrigerant cooled by the refrigerating device 100 circulates to cool the cold storage module 220 capable of storing cold air, and the article stored in the refrigerator storage 500 by the phase change of the cold storage module 220. Although it can maintain the freshness of the frost (I) is generated on the outer surface of each cold storage module 220 when operating for a long time.

Frost (I) generated on the outer surface of the cold storage module 220 is not cooled enough to enter the indoor air through the inlet port 240 is discharged through the outlet 250 to reduce the overall cooling efficiency.

Therefore, the defrosting device 300 is installed to remove the frost I of the cold storage module 220.

Figure 3 is a perspective view of an embodiment of a liquid film defrosting apparatus in a cold storage refrigeration system having a liquid film defrosting apparatus according to the present invention, Figure 4 is a cross-sectional view taken along the line AA of Figure 3, Figure 5 is a liquid film during operation of the defrosting device of FIG. It is explanatory drawing of the principle formed and defrosted.

The defrosting apparatus 300 is respectively installed in the longitudinal direction of the cold storage module 220 in the upper portion of the plurality of cold storage modules 220, one end is connected to the water supply pipe 310 and the plurality of through holes h1, h2) the spraying pipe 340, the spraying pipe 340 and the solenoid valve 320 installed in the connection portion of the water supply pipe 310, and the spraying control device 400 for controlling each of the solenoid valve 320 And, it is installed on the lower surface of the cold storage module 220 and includes a drain pipe 350 for discharging the water 360 is completed defrosting.

The sprinkling pipe 340 includes a connecting pipe 330, and a plurality of upper portion is installed to correspond to the plurality of cold storage module 220, of course.

In addition, the water 360 discharged through the through-holes h1 and h2 of the sprinkling pipe 340 is fitted along both edges and lengthwise directions of both sides of the cold storage module 220 to guide the water 360 to both sides of the cold storage module 220. It includes a guide member 370 having a pair of inclined surfaces (371, 372) inclined at a predetermined angle toward the upper inner side.

In addition, the plurality of water pipes 340, one end is installed at a predetermined interval in the upper portion in the longitudinal direction of each of the cooling module 220 in a state connected to the water supply pipe (310). In addition, the sprinkling pipe 340 is preferably disposed so as to be located in the center of each of the cold storage module 220, a plurality of holes (h1, h2) are formed at regular intervals on both sides of the lower side with respect to the center. In addition, the guide member 370 installed on the lower surface of the water spray pipe 340 is the frost (I) of the water storage module 220, the water 360 supplied through the plurality of holes (h1, h2) of the water spray pipe 340. Allow the liquid to flow from the top to the bottom with the liquid film formed along the outer surface.

In more detail, the plurality of cold storage modules 220 of the present invention are installed at predetermined intervals as the first to fourth cold storage modules 220a, 220b, 220c, and 220d.

The first to fourth watering pipes 340a, 340b, 340c, and 340d having the guide member 370 installed on the lower surface with a predetermined interval corresponding to the upper portions of the plurality of cooling modules 220 arranged as described above are disposed. This is to defrost each of the cold storage modules 220 sequentially. In addition, each spray pipe 340 is a plurality of solenoid valves (320a, 320b, 320c, 320d) for controlling the water 360 flowing through the water supply pipe 310 and defrosting each of the refrigeration module 220 It is installed correspondingly.

That is, in order to defrost the first storage module 220a, when the first solenoid valve 320a is opened by the sprinkling control device 400, the water 360 flowing through the water supply pipe 310 is the first solenoid valve ( A first water pipe 340a connected to 320a is reached to flow along the side from the upper surface of the first storage module 220a to the lower surface direction. At this time, the plurality of holes h1 and h2 formed on both lower sides of the first water pipe 340a are guide members 370 installed on the bottom surface of the first water pipe 340a as shown in FIG. 4 or 5. Holes h1 formed on the left side by the center of the first storage module 220a by the inclined surfaces 371 and 372 collide with the inclined surface 371 formed on the left side of the guide member 370 to form a liquid film. The frost I generated on the left side of the storage module 220a is removed, and the hole h2 formed on the right side hits the inclined surface 372 formed on the right side of the guide member 370 and flows while forming a liquid film. Frost (I) generated on the right side of the cold storage module (220a) is effectively removed.

As described above, when the defrosting operation of the first storage module 220a is completed, the first solenoid valve 320a is closed by the water spray control device 400, and the second storage module 220b that is disposed next is defrosted. To this end, the second solenoid valve 320b is opened and water supplied to the water 360 is sprinkled to both sides of the upper portion of the second storage module 220b through the second water spray pipe 340b.

When the defrosting operation of the second storage module 220b is completed, the third storage module 220c and the fourth storage module 220d are sequentially defrosted as described above.

Although defrosting was performed sequentially, in some cases, defrosting may be performed collectively, and in some cases, when water supply is sufficient, frost generated on the side of the storage module may be defrosted without a solenoid valve.

Water defrosting is completed is discharged through the drain pipe 350 is installed through the lower surface of the case 210 installed in the cold storage module 220. In addition, it is preferable that the bottom surface of the case 210 in which the plurality of cooling modules 220 are disposed to be inclined in the direction in which the drain pipe 350 is installed for complete drainage flows naturally along the slope.

In addition, in order to effectively remove the frost (I), the solenoid valve 320 is opened and closed for a predetermined time to the sprinkling control device 400 before operating the refrigerating device 100 to cool the plurality of cold storage modules 220. It is more preferable to remove frost (I).

6 is an explanatory view of various embodiments of an airflow flow path in a cold storage refrigeration system having a liquid film defrosting device according to the present invention.

FIG. 6 (a) divides the inside of the case 210 into the cold storage module accommodating part 213 and the air passage 212, and is spaced a predetermined distance from the bottom of the case 210 so that cold air can be circulated through the lower portion. The partition 211 is installed. At this time, in order to allow the cold air cooled by the cold storage module 220 installed in the cold storage module accommodating part 213 to be discharged effectively without being lost, air passages 212 are provided on both sides of the upper part of the case 210. Each inlet communicated with each other is installed, and an outlet connected to the cold storage module accommodating part 213 is formed on an upper front surface of the case 210. Therefore, the air in the cold storage 500 passes through the air passages 212 through the inlets provided on both sides of the upper portion of the case 210 to the cold storage module accommodating portion 213 in which the cold storage module 220 is disposed and cooled. By being discharged to the outlet, the loss of cold air can be effectively prevented.

Figure 6 (b) is the same as Figure 6 (a) of the above embodiment, it characterized in that the inlet is further installed on the upper front of the case 210. Therefore, the air sucked through the inlet is discharged through the outlet installed in the upper front of the case 210 in a state of being cooled through the air storage unit 212 through the air storage module accommodating portion 213 in which the cold storage module 220 is disposed. do.

6 (c) is an inlet is installed in the upper front surface of the case 210, that is, the storage module accommodating part 213, and outlets are installed in both upper surfaces of the case 210, that is, the air passage 212, to discharge cold air. Is different from Figs. 6 (a) and 6 (b).

Therefore, the air sucked through the inlet port is cooled through the cold storage module accommodating part 213 in which the cold storage module 220 is installed, and then cooled through the lower part of the case 210 in which the partition wall 211 is installed so that the cold air is not lost. It is discharged to the outlet installed in the upper portion of the case 210 via the furnace (212). As described above, the cold air of the cold storage module 220 disposed in the inner side of the case 210, that is, the cold storage module accommodating portion 213 may not be easily leaked by the circulation of the air, and thus the cold air may be maintained for a long time. Can be discharged.

According to the present invention, there is provided a cold storage refrigeration system that can effectively remove frost stuck to the side of the cold storage module by using a defrosting device that can form a liquid film. In addition, the inlet and outlet of the air is formed on the upper portion of the case to provide a cold storage refrigeration system having a liquid film defrosting device that can be effectively insulated by insulating to prevent cold air from flowing out of the cold storage module.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims (5)

A refrigeration refrigeration system comprising a refrigeration module containing a phase change material, a cooling tube installed to penetrate the inside of the cold storage module, and a refrigerating device for circulating a refrigerant in the cooling tube. A watering pipe connected to a water supply pipe and installed in the longitudinal direction of the cold storage module at an upper portion of the cold storage module, and having a plurality of through holes toward both sides of the cold storage module; A guide member having an inclined surface inclined at a predetermined angle toward the upper inner side by contacting the edges of both sides of the cold storage module along the lengthwise direction to guide the water discharged through the through hole of the sprinkling tube to both sides of the cold storage module. Including, The through hole of the sprinkling pipe, the cold storage refrigeration system having a liquid film defrosting device characterized in that the discharged water is discharged toward the inclined surface of the cold storage module. The method of claim 1, A solenoid valve installed at a connection portion of the watering pipe and the water supply pipe; And a watering control device for controlling the opening and closing of the solenoid valve. The method of claim 2, The water spray control device is a cold storage refrigeration system having a liquid film defrosting device, characterized in that for controlling the opening and closing of the solenoid valve for a predetermined time before the operation of the refrigeration device. The method according to any one of claims 1 to 3, The cold storage module is installed inside the insulation case, The case partitions the inside of the case into the storage module and the air passage, the partition is installed a spaced apart from the bottom of the case by a certain distance so that the storage module and the air passage communicates through the bottom, The case has an inlet formed in the upper portion of the case so as to communicate with the air passage, the outlet of the liquid-cooled refrigeration system having a liquid film defrosting device, characterized in that the outlet formed in the upper portion of the casing to interlock with the storage module. The method according to any one of claims 1 to 3, The cold storage module is installed inside the insulation case, The case partitions the inside of the case into the storage module and the air passage, the partition is installed a spaced apart from the bottom of the case by a certain distance so that the storage module and the air passage communicates through the bottom, The case has an outlet is formed in the upper portion of the case so as to communicate with the air passage, the inlet is formed in the upper portion of the case so as to interlock with the cold storage module receiving unit, the cold storage refrigeration system having a liquid film defrosting device.

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