KR20090082607A - Ice storage heat exchange system - Google Patents

Abstract

A heat exchanger of a cooling storage system is provided to reduce fuel cost of a vehicle by mounting a heat exchanger on a freezing/cooling van truck. A heat exchanger(1) of a cooling storage system comprises an air suction inlet(11), a plurality of heat radiation fins, and a plurality of blowers(13). The air suction pipe adsorbs the indoor air through the bottom of a heat condensing tank(2) and is formed at the one side of the bottom of the heat exchanger. The plurality of heat radiation fins adhere to one side of the cooling storage systems installed inside the heat exchanger at constant intervals. A plurality of air blowing outlet are installed to discharge cooled air inside a room.

Description

Heat exchanger of ice heat storage system {Ice storage heat exchange system}

The present invention relates to a heat exchanger of an ice heat storage system, and more particularly, to operate a refrigeration device, and more specifically, to store an ice storage liquid resin stored in an ice storage tank of a heat storage device mounted on a refrigerated warehouse and a freezer or a tower for freezing and freezing. The present invention relates to a heat storage device of an ice heat storage system for use as a heat source for freezing and refrigeration as a method of freezing and melting.

Generally, the ice storage system uses a low-cost midnight electricity to operate a refrigerating device to freeze ice balls or water stored inside the ice storage tank, and then melts the ice balls or ice to use the indoor air at an appropriate temperature during high temperature days. It is designed to cool down or freeze the ice stock resin installed in the tower car below freezing and use it at the proper temperature during operation.

The prior art ice heat storage system includes a refrigeration unit having components such as a compressor, a condenser, a liquid heater, an expansion valve, and an evaporator installed in a vehicle, and a refrigeration unit using the refrigeration unit to operate a refrigeration unit for stopping the vehicle. It consists of a method of freezing the ice storage liquid resin stored in the ice storage liquid pipe which is installed in a double structure to surround the internal refrigerant pipe in which the refrigerant is circulated on the ceiling side of the freezer below the freezing point and maintaining the freezer temperature using only the heat source that has been cooled during operation. It is.

However, the prior art as described above requires a double pipe structure in which the refrigerant and the ice storage liquid are circulated and stored on the ceiling side, so the installation structure of the double pipe is complicated and impossible to attach and detach. If the frost becomes thick due to condensation and freezing of moisture contained in the outside air introduced during the freezing and entering of the frozen goods during the operation, the freezer (frost) is not removed during the freezing operation by operating the freezer during the next ice storage. There is a disadvantage that the efficiency of the freezer falls. In addition, in the case of the refrigeration and refrigeration top top has a disadvantage that the vehicle weight is increased due to the drop (frost) attached to the dual-structure pipe.

The present invention has been proposed in order to solve the problems described in the prior art as described above, each of the heat exchanger and the refrigeration apparatus in which an ice storage tank for cooling the ice storage liquid by circulating the refrigerant supplied from the refrigerating device to freeze in ice state The heat exchanger is installed inside the refrigeration and refrigerating warehouse, and the refrigerating device is installed on the outside of the refrigeration warehouse by allowing each other to be connected to the mutual refrigerant supply line and the refrigerant recovery line. In other words, the use area of the freezer and refrigerator compartment can be widened. Also, in the case of the freezer and refrigeration tower cars, only the heat exchanger is installed inside the freezer and refrigeration tower. In addition, in the case of refrigeration and refrigerated trucks, it can be installed with the refrigeration unit mounted on the truck. However, when the refrigeration unit is completely separated from the vehicle, for example, when it is installed in a parking lot and the vehicle has been put into the parking lot after the operation, the refrigerant supply line and the refrigerant recovery line of the heat exchanger installed inside the refrigeration tower and the refrigeration unit installed in the parking lot Another purpose is to cool the ice storage liquid stored in the ice storage heat tank of the heat exchanger by operating a refrigeration apparatus by using a low-cost nighttime electricity at night and then freezing it in an ice state. The ice heat storage tank of the silver heat exchanger is equipped with an improved ice cold plate to freeze the ice liquid with the resin liquid having an freezing point of about -30 ° C. Frost on the heat sink fins formed on one side of the ice cooling tank to cool down will appear. In the case is an invention for providing a heat exchanger having a defrosting device for removing it.

The present invention as a means for achieving the above object,

In the heat exchanger is provided with at least one ice storage tank for storing the ice storage liquid,

A suction port is formed at one side of the bottom of the heat exchanger to suck air in the room under the ice storage tank, and a plurality of heat dissipation fins are attached to one side of each of the ice storage tanks installed at least one inside the heat exchanger. The ice accumulating liquid stored in the ice storage tank in the ice state in the process of passing through the plurality of heat sink fins are sucked through the suction port through the suction port and attached to one or more ice storage tanks. And a plurality of blowers installed to discharge cold air cooled by the heat exchange action with the room.

In addition, the suction port formed on one side of the bottom of the heat exchanger is attached to the piston rod end of the cylinder is characterized in that the opening and closing control by the damper is installed to move up and down.

In addition, the ice storage tank is provided with at least one ice making cold plate for cooling the ice storage liquid in the ice state by the circulation operation of the refrigerant supplied from the outside, the ice making cold plate facing the installation grooves formed in a semi-circular cross section The two plate-shaped members formed in a zigzag shape are joined to each other by surface welding, and both of the installation recesses form a refrigerant circulation passage, and each of the refrigerant inlet and the refrigerant outlet of the refrigerant circulation passage has a refrigerant supply pipe and Refrigerant recovery pipe is connected and the core welded outer surface is characterized in that the plurality of heat dissipation fins are configured in a fixed structure by welding.

In addition, the ice-making cold plate is characterized in that the refrigerant circulation passage formed by deep welding the two plate-like members are embedded in a wire ring wound in a spiral like a coil spring.

In addition, the heat exchange device is provided with a defrosting device in which a plurality of electric heaters that can melt the frost attached to each of the plurality of heat radiation fins formed at a predetermined interval on one side of the ice storage tank is installed at least one. It is done.

In addition, in the ice storage tank, a plurality of shrinkage tubes are formed at suitable intervals, which are compressed to absorb the expanded volume when the ice storage liquid is cooled in ice state and then restored to the original state when the ice storage liquid is reduced to liquid state. It is characterized by.

According to the present invention, only a heat exchanger equipped with an ice storage tank is installed in the freezing / freezing chamber, and a freezing device for cooling the ice storage liquid stored in the ice storage tank of the heat exchanger in an ice state can be installed outside the freezing / freezing chamber. It is effective to increase the use area for storing frozen and refrigerated items inside the refrigerating compartment, to use inexpensive midnight electricity, and to expand the volume that expands when freezing the ice storage liquid stored in the ice storage tank. When the condensation tube is compressed to be absorbed and the ice condensate is reduced to the liquid state, the condensation tube is elastically restored to its original state so that the ice storage tank is not deformed, and at a predetermined interval on one side of the heat exchanger. To cool the air in the room circulated between the heat sink fins When the frost is thickly formed on the heat radiation fin of the heat exchanger due to the moisture contained in the heat exchanger, the defrosting device is operated for a predetermined time to heat and remove the drip formed on the heat radiation fin to cool the indoor air again. It has the effect of improving the efficiency, and also in the case of refrigeration and refrigerated tower vehicle can be operated by mounting only the heat exchanger to the refrigeration and refrigeration tower, so that the total weight of the vehicle can be reduced to reduce the fuel cost of the vehicle To provide the effect.

Detailed description of the heat exchange device of the ice heat storage system according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a heat exchanger for explaining the present invention, Figure 2 is a cross-sectional view of the heat exchanger of the present invention, Figure 3 is an exploded perspective view of the ice storage tank and the defrosting apparatus installed in the heat exchanger of the present invention, Figure 4 3 is a cross-sectional view taken along the line AA of Figure 3, Figure 5 is a cross-sectional view taken along the line BB of Figure 4, Figure 6 is an exploded perspective view of the ice making cold plate in the ice storage tank of the present invention, Figure 7 is an ice making in the ice storage tank of the present invention Figure 8 is a perspective view of the cold plate, Figure 8 is a perspective view of the heat radiation fins formed in each of the ice storage tank and the ice making cold plate of the present invention, Figure 9 and Figure 10 is an embodiment in which the heat exchange device of the present invention is applied to a refrigeration / refrigerator and freezer / refrigeration tower It is shown.

Reference numeral 1 denotes a heat exchanger, and the heat exchanger 1 has an inlet 11 for suctioning indoor air on the lower side of the ice storage tank 2 mounted therein. The upper side is provided with a plurality of blowers (13) rotatably installed in the plurality of blowers (12) formed to discharge the air heat-exchanged by the ice storage tank (2) in the heat exchanger (1) to the room, It also includes a damper 16 attached to the tip of the piston rod 15 of the cylinder 14 fixed to the upper side of the suction port 11 to control the opening and closing of the suction port 11.

In addition, a coolant supply line 17 and a coolant recovery line 18 for supplying a coolant to the ice storage tank 2 mounted therein are installed at one side of the heat exchanger 1.

Ice storage liquid is stored in the ice storage tank (2) mounted at least one inside the heat exchange device (1), the ice storage liquid is a very low temperature of -30 ℃ (freezing point) currently used to obtain ice storage heat in the refrigeration industry A resin liquid is used that freezes.

The ice storage tank (2) is a closed tank is used to store the ice storage liquid, the injection hole 21 and the air vent 22 for extracting the air is formed on the upper surface to store the ice storage liquid injected therein On one side, the refrigerant supply pipe 31 and the refrigerant recovery pipe 32 for supplying and recovering the refrigerant to the ice making plate 3 to be described later are exposed to the outside, and the other side of the ice storage liquid stored therein. A see-through window 23 for visually confirming the storage amount is formed, and a drain tube 24 is formed on the lower side.

In addition, a plurality of heat dissipation fins 25 welded to one side of the ice storage tank 2 are arranged at regular intervals.

At least one ice making cold plate 3 is provided inside the ice storage tank 2 to freeze the ice storage liquid in an ice state.

The ice-making cold plate 3 is welded to each other by welding the two side plate-like members (3a) (3b) formed symmetrically in a zigzag shape so that the installation grooves 31, 32 having a semicircular cross section face each other. 31 and 32, the installation grooves 31 and 32 are formed in a zigzag shape with the four sides edges of the plate-like members 3a and 3b formed above so that the refrigerant circulation passages 30 having a circular cross section are formed to face each other. ) Is formed between the flat portion that is formed between the surface contact with each other in the surface contact, the ice-making cold plate (3) produced in this way is a refrigerant circulation passage 30 is formed in a zigzag shape.

A refrigerant supply pipe 33 and a refrigerant recovery pipe 34 are respectively connected to the inlet and the outlet of the refrigerant circulation passage 30 formed in a zigzag shape on the ice making plate 3 manufactured as described above, and the refrigerant circulation passage described above. In order to improve the heat exchange efficiency of the refrigerant circulated to the 30, a plurality of heat dissipation fins 35 and 36 are welded to both sides of the plate-like members 3a and 3b of the ice-making cold plate 3, respectively. In one refrigerant circulation passage 30, a wire ring 4 formed in a spiral like a coil spring is zigzag-shaped.

The wire rolling 4 increases the contact area with the coolant without affecting the flow of the coolant circulating in the coolant circulation passage 30, so that the heat exchange efficiency of the ice-making cold plate 3 itself, that is, the ice storage tank 2 It will improve the heat deprivation action of the ice storage liquid stored in the.

In addition, the heat exchange device (1) is an image accumulation phenomenon (frost accumulation phenomenon) in which the moisture contained in the air is stuck to the heat radiation fins 25 formed in a plurality of predetermined intervals on one side of the ice heat storage tank (2) air When the heat exchange efficiency of each of the heat dissipation fins 25 is deteriorated due to the frost attached to each of the heat dissipation fins 25 thick, for this purpose, the heat exchange device (1) is attached to each of the heat dissipation fins 25 A defrosting device 5 for melting frost is provided.

The defroster 5 is installed in contact with a plurality of heat dissipation fins 25 formed on one side of the ice storage tank 25, and includes a plurality of electric heaters 52 between the metal plate members 51 on both sides. The heat radiating fins 53 are alternately installed internally.

On the other hand, on both sides of the inner wall of the ice storage tank (2) is formed a plurality of shrinkage tube (6) for absorbing the volume expansion of the ice storage liquid appears when the ice storage liquid stored by the cooling operation of the ice-making cold plate (3) is frozen in the ice state The shrinkage tube 6 is made of a synthetic resin (PE) material which is elastically compressed when the ice-cold liquid is frozen in volume expansion and then elastically restored to its original state when the ice-cold liquid is reduced to a liquid state. Used.

In the heat exchanger 1 of the present invention configured as described above, two ice storage tanks 2 and a defroster 5 are installed between the left and right sides of the heat exchanger 1 in the embodiment. When applied to the freezer and cold storage (8a) as shown in the example, the heat exchanger (1) is installed inside the freezer and cold storage (8a), the refrigeration apparatus for supplying and recovering the refrigerant to the heat exchanger (1) (7) is installed outside the refrigeration and refrigerated warehouse (8a), and when applied to the refrigeration and refrigeration truck (8b) as shown in Figure 10, the refrigeration unit (7) is not mounted on the vehicle heat exchanger (1) ) Installed inside the tower car, and at night after the operation of the tower car is put into a parking lot equipped with the freezing device 7, the freezing device 7 is operated by using a late-night electric power to heat the ice storage tank (2) of the heat exchanger (1). Freezes ice cubes stored during the day Will be able to transport the goods stored in the frozen and refrigerated state.

The operation of the heat exchanger 1 applied to the freezer / refrigerated warehouse 8a and the freezer / refrigerated truck 8b as described above will be described.

In order to freeze the ice storage liquid stored in the ice storage tank 2 installed in the heat exchange device 1, the refrigerant supply line 17 and the refrigerant recovery line 18 of the heat exchange device 1 are refrigerated (7). When the refrigerating device 7 is operated, the refrigerant supplied from the refrigerating device is installed in the ice storage tank 2 through the refrigerant supply pipe 31 to which the refrigerant supply line 17 is connected. Heat is removed from the ice storage liquid stored in the ice storage tank 2 while circulating the refrigerant circulation passage 30 of the). The wire circulation ring 4 wound around the coil springer spiral in the refrigerant circulation passage 30 is circulated. The heat transfer area with the refrigerant is increased, and the heat dissipation fins 35 and 36 attached to both sides of the ice making plate 3 increase the heat exchange area with the ice storage liquid. The loaded ice storage liquid is the refrigerant circulation cylinder of the ice making cold plate (3). Is the state in which continuously cooled while the refrigerant circulates through the 30 end, is cooled below the freezing point (-30 ℃) is frozen into ice conditions.

When the ice storage liquid stored in the ice storage tank (2) mounted on the heat exchange device (1) is frozen in an ice state, the operation of the freezing apparatus (7) is stopped. At this time, the refrigerant supply line (17) connected to the refrigerating device (7) and The valve installed in the refrigerant recovery line 18 is closed or separated from the refrigerating device 7 while the respective lines 17 and 18 are locked.

As described above, when the ice storage liquid stored in the ice storage tank 2 mounted inside the heat exchanger 1 is cooled in an ice state, the heat exchanger 1 is operated to operate the freezing / refrigeration warehouse 8a and the freezing / refrigeration truck ( The room of 8b) is cooled to a temperature of freezing and refrigerating state. At this time, each blower 13 installed in the air vent 12 formed in the upper part of the heat exchanger 1 is operated, while the cylinder 14 is operated to operate the piston. When the rod 15 opens the damper 16 upwardly, the internal air of the heat exchanger 1 is discharged to the outside by the blower 13, so that the indoor air of the warehouse and the tower car is opened. Heat exchanger action with the heat dissipation fins 25 when it is sucked into the bottom of the heat exchanger 1 through the heat transfer device 11 and moves upward through the heat dissipation fins 25 of the ice storage tanks 2 installed on both sides of the defrosting apparatus 5. Coldly cooled, and thus the phase of the heat exchanger 1 By operating a plurality of blowers 13 mounted on the unit to suck and discharge the air inside the warehouse and the tower vehicle into the heat exchanger 1 to cool the internal temperature of the warehouse and the tower vehicle to a predetermined temperature. .

On the other hand, as described above, by operating the blower 13 of the heat exchanger 1, the internal air of the warehouse and the tower car are sucked into the heat exchanger 1 and welded to one side of the ice storage tank 2. When heat is exchanged while contacting), the moisture contained in the air is attached to each of the heat sink fins 25 in a frost state. This phenomenon occurs continuously and the thickness of frost attached to each of the heat sink fins 25 is continuously observed. When the heat exchange efficiency with the air sucked into the inlet 11 is reduced, the operation of the blower 13 is stopped and electric power is supplied to a plurality of electric heaters 52 installed in the defroster 5 to be heated. When the heat generated from the electric heater 52 is transferred to the metal plate 51 on both sides through a plurality of heat dissipation fins 53, the metal heater 51 contacts the metal plate 51 on both sides of the defroster 5. Installed Side is attached to each of the radiating fins 25 in a frost ice thermal storage tank (2) is removed by the heat transmitted from the two sides of metal sheet (51).

As described above, the electricity is supplied to the electric heater 52 of the defrosting device 5 for a predetermined time to remove frost attached to the plurality of heat radiation fins 25 installed on each of the ice storage tanks 2 on both sides, and then the blower 13 is again provided. When operated, as described above, the interior air of the warehouse and the tower vehicle is sucked into the intake port of the heat exchanger 1 and passes between the plurality of heat dissipation fins 25 installed at predetermined intervals in each of the ice storage tanks 2 on both sides. During the heat exchange action is cooled to repeat the operation discharged through the tuyeres 12 will be able to cool the interior of the warehouse and the tower to a set low temperature.

The heat exchange device 1 is a damper 16 that controls the opening width of the inlet 11 so as to adjust the suction amount of air sucked into the heat exchanger 1 by the cooling temperature of the warehouse and the tower. Can be adjusted.

1 is a perspective view of a heat exchanger for explaining the present invention.

2 is a cross-sectional view of a heat exchanger of the present invention.

Figure 3 is an exploded perspective view of the ice storage tank and the defrosting device installed in the heat exchanger of the present invention.

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

5 is a cross-sectional view taken along the line B-B in FIG.

Figure 6 is an exploded perspective view of the ice making cold plate in the ice storage tank of the present invention.

Figure 7 is a perspective view of the ice making cold plate in the ice storage tank of the present invention.

Figure 8 is a perspective view of the heat radiation fins formed in each of the ice storage tank and the ice making cold plate of the present invention.

9 and 10 are embodiments in which the heat exchanger of the present invention is applied to a refrigerating and freezing warehouse and a freezing and refrigerating truck.

※ Explanation of code for main part of drawing

1: heat exchanger 11: inlet

12 air blower 13 air blower

14 cylinder 16 damper

17: refrigerant supply line 18: refrigerant recovery line

2: ice storage tank 21: injection hole

22: air vent 23: see-through window

24 drain tube 25 heat dissipation fin

3: ice-making cold plate 3a, 3b: both side plate member

30: Refrigerant circulation passage 31,32: Installation groove

33: refrigerant supply pipe 34: refrigerant recovery pipe

35,36: heat sink fin 4: wire routing

5: defrosting device 51: metal plate

52: electric heater 53: heat radiation fin

6: contraction tube 7: freezer;

8a: Refrigerated and Refrigerated Warehouse 8b: Refrigerated and Refrigerated Truck

Claims (6)

In the heat exchanger is provided with at least one ice storage tank for storing the ice storage liquid, A suction port is formed at one side of the bottom of the heat exchanger to suck air in the room under the ice storage tank, and a plurality of heat dissipation fins are attached to one side of each of the ice storage tanks installed at least one inside the heat exchanger. The ice accumulating liquid stored in the ice storage tank in the ice state in the process of passing through the plurality of heat sink fins are sucked through the suction port through the suction port and attached to one or more ice storage tanks. And a plurality of blowers installed to discharge the cool air cooled by the heat exchange action with the room. The method of claim 1, The suction port formed at one side of the bottom of the heat exchanger is attached to the end of the piston rod of the cylinder, the heat exchanger of the ice heat storage system, characterized in that the opening and closing is controlled by a damper installed to move up and down. The method of claim 1, The ice storage tank is provided with at least one ice making cold plate for cooling the ice storage liquid in the ice state by the circulation operation of the refrigerant supplied from the outside, the ice making cold plate is zigzag so that the installation groove formed in a semicircular cross section facing each other Part of the two plate-shaped members formed in the upper surface contact with each other is joined by the seam welding and both installation grooves form a refrigerant circulation passage, the refrigerant inlet and the refrigerant outlet of the refrigerant circulation passage, respectively, the refrigerant supply pipe and the refrigerant recovery The heat exchanger of the ice heat storage system, characterized in that the pipe is connected to the core welded outer surface is composed of a plurality of heat dissipation fins fixed by welding. The method of claim 3, wherein The ice-making cold plate is a heat exchanger of the ice heat storage system, characterized in that the refrigerant circulation passage formed by deep welding the two plate-like members are embedded in the wire rolling wound in a spiral like a coil spring. The method of claim 1, The heat exchanger is provided with a defrosting device in which a plurality of electric heaters are installed to melt frost attached to each of the plurality of heat radiation fins formed at a predetermined interval on one side of the ice storage tank installed at least one. Heat exchanger of ice heat storage system. The method according to claim 1 or 3, In the ice storage tank, a plurality of shrinkage tubes are compressed at appropriate intervals to compress the ice storage liquid to absorb the expanded volume when the ice storage liquid is cooled in ice state and then return to the original state when the ice storage liquid is reduced to liquid state. Heat exchanger of ice heat storage system.

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