KR101756213B1 - Cold reserving heat exchanger - Google Patents

Abstract

The present invention relates to a cold-storage heat exchanger, and more particularly, to an evaporator used in an air conditioner of a vehicle, which comprises a spiral-cooled tube for storing condensed water naturally generated in an evaporator during operation of a vehicle, The present invention relates to a cold-storage heat exchanger which can increase the cooling comfort of a user by discharging cool air stored in a spindle-cooling tube even when the engine is stopped, thereby preventing a sudden temperature rise in the vehicle interior and minimizing energy and time consumed in re- .

Description

Cold reserving heat exchanger

The present invention relates to a cold-storage heat exchanger, and more particularly, to an evaporator used in an air conditioner of a vehicle, comprising a spiral-cooled tube for storing condensed water naturally generated in an evaporator during operation of a vehicle, The present invention relates to a cold-storage heat exchanger which can increase the cooling comfort of a user by discharging cool air stored in a spindle-cooling tube even when the engine is stopped, thereby preventing a sudden temperature rise in the vehicle interior and minimizing energy and time consumed in re- .

An air conditioning system is a device that absorbs heat inside a vehicle to dissipate heat to the outside of the vehicle between two environments with a temperature difference. Generally, an evaporator that absorbs heat from the surroundings, a compressor that compresses the refrigerant, A condenser, and an expansion valve for expanding the refrigerant.

In the cooling device, the actual cooling effect is generated by the evaporator in which the refrigerant in the liquid state absorbs heat as much as the heat of vaporization and vaporizes. The gaseous refrigerant flowing into the compressor from the evaporator is compressed to a high temperature and a high pressure in the compressor, and the refrigerant in the compressed gaseous state passes through the condenser and is liquefied, and the liquefied heat is discharged to the periphery. After passing through the expansion valve, it becomes a low-temperature and low-pressure wetted vapor state, and then flows into the evaporator again to be vaporized to form a cycle.

However, since the cooling apparatus of the vehicle is based on the driving force of the engine, the cooling operation does not occur while the vehicle is in the idling state or during short-time parking. If the temperature of the outside environment of the vehicle is very high, if the cooling device does not operate even in such a short time, the temperature of the vehicle interior rises very rapidly. Only when the vehicle starts running again, So that the cool wind is not released quickly, thereby greatly reducing the comfort of the user.

In recent years, as the interest in environment and energy in the automobile industry has been increasing worldwide, studies for improving fuel efficiency have been conducted. Research and development for weight reduction, miniaturization and high performance have been steadily carried out in order to satisfy various consumers' desires.

Particularly, research and development of a hybrid vehicle that uses both the power and the electric energy of the engine at the same time due to the improvement of the fuel consumption and the emission control of the soot are increasing, and the hybrid vehicle automatically stops the engine And an idle stop / stop system in which the engine is restarted by the operation of the transmission is often adopted.

However, even in the case of the hybrid vehicle, since the cooling apparatus is operated by the engine, when the engine is stopped, the compressor is also stopped, and the temperature of the evaporator is suddenly increased to deteriorate the comfort of the user.

In addition, since the refrigerant in the evaporator is easily vaporized at room temperature, the refrigerant vaporizes for a short period of time in which the compressor is not operated, and the engine is operated again so that the evaporated refrigerant is compressed and liquefied even if the compressor and the evaporator are operated. Not only a long time is required but also an increase in the total energy requirement.

Various types of heat exchangers using cold storage materials for storing cold air have been proposed to solve the above problems.

1 and 2 are views showing a heat exchanger in which a conventional axial coolant is stored.

As shown in FIG. 1, the heat exchanger in which the conventional axial coolant is stored has a pair of tanks spaced apart from each other by a predetermined distance, and the tank includes a first tank 21 and a second tank 31. The first tank 21 is coupled to the first header 20 and the second tank 31 is coupled to the second header 30 to form independent flow paths.

The first header 20 and the second header 30 are fixed at both ends thereof to couple a plurality of refrigerant tubes 40 and a thermally chilled tube 50 forming a heat exchange medium flow path.

As shown in FIG. 2, the refrigerant tube 40 is formed in the interior of the spiral-shaped tube 50, and the flow path of the heat exchange medium and the axial coolant are formed independently of each other.

Several pins (60) are coupled to contact the space between the mandrel tube (50).

Therefore, it is difficult to form an independent space between the axial coolant and the heat exchange medium, resulting in a complicated structure and a low production efficiency.

In addition, the conventional heat exchanger in which the axial coolant is stored has a high possibility that the axial coolant interferes with the flow of the heat exchange medium or is mixed with the other, thereby causing another problem.

Further, the heat exchanger in which the conventional axial coolant is stored needs to use a separate axial coolant, which increases manufacturing cost.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems as described above, and it is an object of the present invention to provide a spiral cooling tube for storing condensed water naturally generated in an evaporator during operation of a vehicle, The present invention provides a cold-storage heat exchanger which can increase the cooling comfort of a user by preventing a sudden temperature rise in a vehicle interior by releasing cool air stored in the cold-rolled tube, and minimizing energy and time consumed in re-cooling.

It is another object of the present invention to provide a heat exchanger and a cold storage material which do not require a separate cold storage material by using condensed water naturally generated in the evaporator as a cold storage material, And a cold-storage heat exchanger capable of lowering the possibility that the medium and the axial coolant are mixed.

According to an aspect of the present invention, there is provided a heat-

A pair of tanks 200 formed to be spaced apart from each other by a predetermined distance; Several refrigerant tubes (100) having both ends fixed to the pair of tanks (200) to form heat exchange medium flow paths; And a plurality of pins (300) fixed in contact with the refrigerant tube (100). And a heat exchanger for cooling the heat exchanger,

A condensed water storage means 500 is provided in which the thermostated tubes 400 are coupled to one or both surfaces of the plurality of refrigerant tubes 100 and the condensed water is stored in the thermostated tubes 400.

In addition, the constriction-cooling tube 400 is formed with a space in which a pair of constriction plates 410 are coupled to allow the condensed water storage means 500 to be installed therein.

In addition, the pair of the compression cooling plates 410 is characterized in that several condensed water inflow holes 420 are formed on the surfaces contacting the refrigerant tube 100 or the fins 300, respectively.

Further, the condensed water storage means 500 is a sponge.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a cold-storage heat exchanger of the present invention, which comprises a spiral-cooled tube for storing condensed water naturally generated in an evaporator, It is possible to increase the cooling comfort of the user by preventing the rapid increase of the temperature of the vehicle interior by releasing the cool air stored in the annular cooling tube even when the engine is stopped due to the stop of the signal atmosphere such as the vehicle, Can be minimized.

In addition, since condensed water naturally generated in the evaporator is used as a condenser, a separate condenser is not required, thereby reducing manufacturing costs.

In addition, the present invention has an advantage in that the independent flow path of each of the refrigerant and the axial coolant is stably formed, and the possibility of mixing the coolant and the axial coolant due to the internal leakage is reduced.

1 is a partial cross-sectional perspective view showing a heat exchanger in which a conventional axial coolant is stored;
Fig. 2 is a cross-sectional view taken along line AA 'in Fig. 1; Fig.
3 is a perspective view illustrating a cold-storage heat exchanger according to the present invention.
Fig. 4 is a front view showing a heat-shrinkable heat exchanger according to the present invention; Fig.
FIG. 5 is an exploded perspective view of the refrigerant tube shown in FIG. 4; FIG.
6 is a perspective view illustrating a refrigerant flow in a coaxial heat exchanger according to the present invention.
7 is a partial cross-sectional view of a heat exchanger according to the present invention.
FIG. 8 is a cross-sectional view taken along line AA 'of FIG. 4; FIG.
FIG. 9 is a perspective view of the spiral-wound tube of FIG. 4; FIG.

Hereinafter, the cold-storage heat exchanger according to the present invention having the above-

A pair of tanks 200 formed to be spaced apart from each other by a predetermined distance; Several refrigerant tubes (100) having both ends fixed to the pair of tanks (200) to form heat exchange medium flow paths; And a plurality of pins (300) fixed in contact with the refrigerant tube (100). And a heat exchanger for cooling the heat exchanger,

A condensed water storage means 500 is provided in which the thermostated tubes 400 are coupled to one or both surfaces of the plurality of refrigerant tubes 100 and the condensed water is stored in the thermostated tubes 400.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

First, the cold-storage heat exchanger includes an extruded tubular-type heat exchanger in which a refrigerant tube is integrally formed through extrusion and both ends are fixed to a pair of tanks, and a refrigerant tube is formed by coupling a pair of plates, A tube-shaped cold-sealed heat exchanger of a type in which tubes are stacked.

The cold-storage heat exchanger of the present invention can be manufactured in the form of both the extruded tubular type and the laminated tubular type coaxial heat exchanger, and will be described below as an embodiment of the laminated tubular coaxial heat exchanger.

FIGS. 3 and 4 are a perspective view and a front view showing a cold-storage heat exchanger according to the present invention.

The refrigerant tube 100 is a part forming a refrigerant flow path, and a pair of refrigerant plates 110 are coupled to form the refrigerant tube 100.

5, the refrigerant tube 100 is coupled to the pair of refrigerant plates 110, and the refrigerant flow-out cup 120 is coupled to upper and lower portions of the refrigerant plates 110, respectively.

In addition, a number of protrusions 130 are formed in the refrigerant plate 110 to increase the area of contact with the refrigerant and increase the heat transfer efficiency, and a refrigerant flow path 140, which is a space through which the refrigerant flows, is formed.

The refrigerant inflow and outflow cups 120 formed in the plurality of refrigerant tubes 100 formed as described above are coupled to each other to form a tank 200 on the upper and lower sides.

The tank 200 is a space through which the refrigerant flows and guides the refrigerant to the refrigerant tube 100 and is formed by coupling the refrigerant inflow and outflow cups 120.

At this time, when the refrigerant tube 100 is formed by coupling the pair of refrigerant plates 110 or when the refrigerant inflow / outflow cup 120 is coupled to the refrigerant tube 100, .

In the tank 200, a baffle for blocking the flow of the refrigerant may be formed in the refrigerant flow-out cup 120 and the refrigerant plate 110 so as to control the flow path of the refrigerant.

That is, the baffle may be formed in a state that the refrigerant inflow / outflow cup 120 is closed or a portion where the refrigerant inflow / outflow cup 120 is coupled to an upper portion or a lower portion of the refrigerant plate 110 is closed, So that the flow path of the refrigerant can be constituted.

FIG. 6 is a perspective view illustrating a refrigerant flow in the superheating heat exchanger according to the present invention. FIG.

6 shows an example of the refrigerant flow, and various refrigerant flow paths can be configured by changing the position and the number of the baffles.

The inlet pipe 600 and the outlet pipe 700 are formed in various forms such that the refrigerant is connected to the tank 200 according to the flow path of the refrigerant.

In addition, several pins 300 are coupled to the refrigerant tube 100 while the several refrigerant tubes 100 are coupled together.

The fin 300 is in contact with the refrigerant tube 100 and is formed in a wrinkle shape to have a large area to improve heat exchange efficiency.

FIG. 7 is a partial cross-sectional view of a heat-shrinkable heat exchanger according to the present invention. FIG.

A condenser tube 400 is coupled to one or both surfaces of the refrigerant tubes 100 and a condensed water storage means 500 for storing condensed water is provided in the condenser tube 400.

As shown in FIG. 7, one side of the spiral-shaped tube 400 is in contact with the refrigerant tube 100, and the other side thereof is in contact with the fin 300.

In addition, the compression chamber 400 forms an independent space independent of the refrigerant passage 140 of the refrigerant tube 100.

In this case, the spindle-cooling tube 400 is coupled with a pair of spindle cooling plates 410. When the pair of spindle cooling plates 410 are engaged with each other, the condensed-water storage means 500 is inserted, (400) are formed.

As shown in FIGS. 7 and 8, it is preferable that the thermo-cooling tube 400 is coupled to one side or both sides of the refrigerant tube 100 so as to easily transfer heat from the refrigerant tube 100 .

At this time, as shown in FIG. 9, a number of condensed water inflow holes 420 are formed in the pair of compression cooling plates 410.

When the refrigerant flows into the refrigerant tube 100 and heat exchange occurs, the condensed water in the air around the refrigerated tube 400 is condensed. As shown in FIG. 8, And flows into the condensed water inflow hole 420.

At this time, the condensed water inflow hole 420 formed in the compression cooling plate 410 contacting with the fin 300 may be formed in a suitable position and size so as not to be clogged with the fin 300.

The condensed water flowing into the condensed water inlet hole 420 of the spindle cooling tube 400 is stored in the condensed water storage means 500 provided in the spindle cooling tube 400.

The condensed water storage means 500 may be a sponge as a porous material capable of storing condensed water generated by condensation of moisture in the air. Air around the condensed water tube 400 may be discharged through the condensed water inflow hole 420 It should be able to store enough condensate to enter.

In addition, it is preferable to use one having sufficient strength so that the condensed water storage means 500 is compressed by the load of the stored condensed water and the vibration and impact of the vehicle, so that the molded body is not deformed.

When the refrigerant is introduced into the refrigerant tube 100 and heat exchange occurs, the refrigerant heat exchanger 1000 of the present invention having the above- The amount of condensed water stored in the condensed water storing means 500 increases gradually while the condensed water starts to be stored in the condensed water storing means 500 and the air conditioner operates.

When the condensed water is filled in the condensed water storage means 500, the condensed water generated thereafter flows to the outside of the condensed water tube 400 without flowing into the condensed water inflow hole 420, do.

Accordingly, when the air conditioner operates normally when the vehicle is running, condensed water is stored in the condensed water storage means 500 provided in the spindle-mounted tube 400, and the condensed water receives cool air from the refrigerant tube 100, It serves as a coolant.

When the operation of the air conditioner is stopped due to the engine stop of the vehicle, the cool air held by the condensed water is discharged and the temperature inside the vehicle can be maintained even if only the air conditioner blower is operated for a certain period of time.

That is, the water-cooled heat exchanger 1000 of the present invention constitutes a spiral-cooled tube having a condensed water storing means therein so as to store condensed water naturally generated in the evaporator when the air conditioner of the vehicle operates, Cooling air stored in the spiral-cooled tube is discharged to prevent rapid temperature rise in the vehicle interior, thereby enhancing the cooling comfort of the user.

Also, it is possible to minimize the energy and time consumed in the re-cooling by preventing the sudden temperature rise of the refrigerant due to the cold air of the condensed water stored in the condensed water tube due to the engine stop of the vehicle.

In addition, since condensed water naturally generated in the evaporator is used as the axial coolant, a separate axial coolant is not required, and manufacturing cost can be reduced. Also, since the flow path of the coolant channel and the axial coolant are independently formed, There is an advantage in that the possibility of mixing the refrigerant and the cold coolant is lowered.

The spindle cooling tube 400 may be formed on one side or both sides of the refrigerant tube 100. When the number of the spindle cooling tubes 400 increases, the spindle cooling capacity increases. In addition, if the thickness of the spiral-cooled tube 400 is increased and the volume of the condensed-water storage means 500 provided in the spiral-cooled tube 400 is increased to increase the amount of stored condensed water, the spiral cooling capacity can be increased.

That is, when the operation of the air conditioner due to engine stop is interrupted, it is possible to increase the time for maintaining the internal temperature of the vehicle only by operating the blower by using the cold air of the condensed water stored in the condensed water storage means 500 inside the cold- have.

However, since the spiral-cooled tube 400 is configured to occupy a part of the space constituting the fin 300, if the quantity and thickness of the spiral-cooled tube 400 is increased, the ventilation capacity may be reduced and the cooling performance may be reduced. It is preferable to select the quantity and thickness of the spindle-cooling tube 400 in consideration of the ventilation capacity and the spindle cooling capacity.

9, several condensed water inlet holes 420 may be formed in the cooling plate 410 of the spindle-mounted tube 400.

At this time, the condensed water inflow hole 420 may be formed only on the surface contacting the fin 300. However, the surface on which the compression cooling plate 410 is in contact with the fin 300 and the surface on which the compression cooling plate 410 is in close contact with the refrigerant tube 100, 420 can be assembled, it is not necessary to align the direction in which the spiral tube 400 is coupled when coupling to the refrigerant tube 100, thereby improving assembling performance.

Meanwhile, the water-cooled heat exchanger 1000 of the present invention can be manufactured by the following manufacturing process.

First, the refrigerant tube 100 is assembled with a pair of refrigerant plates 110 and joined by brazing or welding.

Then, the refrigerant inflow / outflow cup 120 is assembled to the refrigerant tube 100 and brazed to manufacture an integrated type.

In addition, the shaft cooling tube 400 is integrally formed by brazing or welding after assembling the pair of cooling plates 410 with the condensed water storage means 500 inserted therein.

Since the condensed water storage means 500 is a sponge made of rubber and urethane material, it is preferable that the condensed water storage means 500 is made by heating only a part of the sponge for a short time, A porous material made of fibers may also be used.

The plurality of refrigerant tubes 100 formed as described above and the fins 300 are held together alternately.

At this time, the pin 300 is integrally formed by brazing by inserting and fixing the same jig as the thickness of the spindle-cooling tube 400 so as to be in close contact with one surface of the refrigerant tube 100.

That is, since the condensed water storage means 500 is provided inside the spindle cooling tube 400, the condensed water storage means 500 can be disassembled by heat during brazing, and during the brazing or brazing pre-treatment and post- Foreign materials may flow into the condensed water inflow hole 420 formed in the plate 410. Therefore, a jig is used instead of the spindle-mounted tube 400.

At this time, the jig must have a property of not being coupled with the refrigerant tube 100 and the fin 300 in the brazing process, and should be able to maintain the strength even in a high-temperature heating state for brazing because of a high melting point.

The refrigerant tube 100 and the pin 300 are inserted into the space between the refrigerated tube 400 and the condensed water storage means 500, And brazing or the like to complete the constriction-evaporator structure (1000).

In this case, even when the cold-formed tube 400 is brazed to the refrigerant tube 100 and the fin 300, the cold-formed tube 400 is partially joined for a short period of time as possible so that the condensed- .

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It goes without saying that various modifications can be made.

10: Heat exchanger in which the (conventional) axial coolant is stored
20: first header 21: first tank
30: second header 31: second tank
40: refrigerant tube 41: refrigerant passage
50: a spiral-cooled tube 51: a shaft-
60: pin
1000: a cold-formed heat exchanger (according to the invention)
100: Refrigerant tube
110: refrigerant plate 120: refrigerant flow-in cup
130: protrusion 140: refrigerant passage
200: tank
300: pin
400: Hardened tube
410: Co-cooling plate 420: Condensate inflow hole
500: Condensate storage means
600: inlet pipe
700: outlet pipe

Claims (4)

A pair of tanks 200 formed to be spaced apart from each other by a predetermined distance; Several refrigerant tubes (100) having both ends fixed to the pair of tanks (200) to form heat exchange medium flow paths; And a plurality of pins (300) fixed in contact with the refrigerant tube (100). And a heat exchanger for cooling the heat exchanger,
A condensed water storage means 500 coupled to the one side or both sides of the several refrigerant tubes 100 and having a condensed water tube 400 coupled to the condensed water tube 400,
The space cooling tube 400 is formed with a space in which a pair of cooling plates 410 are coupled and the condensed water storage unit 500 can be installed therein,
Wherein the pair of cold storage plates (410) are formed with a number of condensed water inflow holes (420) on the surfaces contacting the refrigerant tube (100) or the fins (300), respectively.
delete delete The method according to claim 1,
Wherein the condensate storage means (500) is a sponge.

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