KR20160125033A - Heat exchanger for refrigerator vehicle and manufacturing thereof - Google Patents

Heat exchanger for refrigerator vehicle and manufacturing thereof Download PDF

Info

Publication number
KR20160125033A
KR20160125033A KR1020150055643A KR20150055643A KR20160125033A KR 20160125033 A KR20160125033 A KR 20160125033A KR 1020150055643 A KR1020150055643 A KR 1020150055643A KR 20150055643 A KR20150055643 A KR 20150055643A KR 20160125033 A KR20160125033 A KR 20160125033A
Authority
KR
South Korea
Prior art keywords
tube
refrigerant
refrigerant outlet
inlet
pipe
Prior art date
Application number
KR1020150055643A
Other languages
Korean (ko)
Inventor
최병요
최영민
김진수
Original Assignee
(주)씨앤와이쿨링
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)씨앤와이쿨링 filed Critical (주)씨앤와이쿨링
Priority to KR1020150055643A priority Critical patent/KR20160125033A/en
Publication of KR20160125033A publication Critical patent/KR20160125033A/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/022—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/20—Refrigerated goods vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/08—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes pressed; stamped; deep-drawn
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Transportation (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The present invention relates to a heat exchanger for a refrigerator vehicle and a manufacturing method thereof to enable an efficient heat exchange between a first coolant having a low temperature and a high pressure and a second coolant having a high temperature and a low pressure in a heat exchange chamber of the heat exchanger. According to the present invention, the heat exchanger comprises a first tubular pipe, a second tubular pipe, a coil pipe, a first coolant inlet pipe, a first coolant outlet pipe, a second coolant inlet pipe, and a second coolant outlet pipe. The first tubular pipe has a tubular shape with one open side by a spinning process, to form a first inner space, with the other side formed with a first coolant inlet to receive the low temperature high pressure first coolant and a second coolant outlet to discharge the high temperature low pressure second coolant. The second tubular pipe has a tubular shape with one open side by the spinning process to form a second inner space, to be connected to the open side of the first tubular shape, the heat exchange chamber by integrating the first and the second inner spaces, and a first coolant outlet to discharge the first coolant and a second coolant inlet to receive the second coolant in the other side. The coil pipe of a spiral shape is placed in the heat exchange chamber. The first coolant inlet pipe is connected to one side of the coil pipe, to protrude outward from the first coolant inlet. The first coolant outlet pipe is connected to the other side of the coil pipe to protrude outward from the first coolant outlet. The second coolant inlet pipe is connected to the second coolant inlet to protrude outward from the second tubular pipe. The second coolant outlet pipe is connected to the second coolant outlet to protrude outward from the first tubular pipe.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat exchanger for a refrigerator,

More particularly, the present invention relates to a heat exchanger and a method of manufacturing the same, and more particularly, to a heat exchanger and a method of manufacturing the same, To a heat exchanger for a refrigerator, which can satisfy both the performance of a refrigerator and the performance of an air conditioner, and a manufacturing method thereof.

BACKGROUND ART Generally, a refrigerator is for carrying a cold-type food or the like, which can not be stored or transported at room temperature, such as various frozen foods or low-temperature foods. The refrigeration truck forms a carrier on the vehicle loading part. A cooling device is installed on the head side of the refrigerator compartment or on the upper side of the conveyor so that the internal temperature of the conveyer becomes a low temperature state through the evaporator of the cooling device.

The refrigerating system includes a condenser, a heat exchanger through which the refrigerant passed through the condenser passes, an evaporator through which the refrigerant flowing out of the heat exchanger passes, a compressor through which the refrigerant passes through the evaporator, and a refrigerant passing between the heat exchanger and the evaporator, And an expansion valve to be sent to the evaporator.

In the refrigeration system having such a constitution, the outside air supplied by the external cooling fan takes the heat of the gas refrigerant while the high-temperature and high-pressure gas refrigerant flowing into the condenser passes through the condenser, and becomes the low-temperature and high-pressure liquid refrigerant.

The liquid refrigerant at a low temperature and high pressure is deformed into a low pressure state through the expansion valve and is evaporated in the evaporator, thereby cooling the surroundings by absorbing the heat of vaporization of the refrigerant from the outside.

In this way, cool air around the evaporator is supplied to a predetermined space and frozen to a desired temperature. The high-temperature and low-pressure gas refrigerant that has passed through the evaporator is compressed by the compressor into the high-temperature and high-pressure gas refrigerant and enters the condenser. The high-temperature, high-pressure gas refrigerant passing through the condenser is repeatedly circulated through the above-mentioned process to continuously perform refrigeration and freezing.

However, in the bell-mouth refrigeration system, the refrigerant passing through the evaporator is heat absorbed from the outside to meet the heat of vaporization, and the liquid-phase refrigerant is completely evaporated to be a gas refrigerant that is a superheated gas. However, due to outside air or other conditions, It becomes a supercooled gas refrigerant having very small grains.

When the supercooled gas refrigerant having water droplets flows into the compressor, the very small particles in the gas refrigerant rapidly explode due to the heat of compression generated when the compressor is compressed at a high pressure. As a result, the overload of the compressor and the refrigerant compression in the compressor are not smoothly performed, thereby deteriorating the performance of the compressor and damaging the compressor cylinder and the piston.

In addition, since the manufacturing process of separately joining the cap and the tube tube of the heat exchanger is required, there is a problem that the time and cost are heavy and the heat exchanger occupies a large portion of the space of the cooling device.

Korean Patent Publication No. 10-2011-0129756 (December 2, 2011)

Accordingly, it is an object of the present invention to provide a heat exchanger for a refrigerator, which is capable of efficiently performing heat exchange in a heat exchanger by lowering the temperature of the refrigerant passing through the evaporator, and preventing a supercooling degree, and a method of manufacturing the same.

Another object of the present invention is to provide a heat exchanger for a refrigerator, which can lower the load of the compressor and reduce the fuel consumption by efficiently lowering the high-temperature refrigerant, and a method of manufacturing the same.

It is still another object of the present invention to provide a heat exchanger for a refrigerator, which can simplify a manufacturing process and reduce costs by manufacturing a tube tube of a heat exchanger by a spinning process, and a manufacturing method thereof.

In order to achieve the above object, a refrigerant heat exchanger according to the present invention comprises a first tube tube, a second tube tube, a coin tube, a first refrigerant inlet tube, a first refrigerant outlet tube, a second refrigerant inlet tube, And a refrigerant outlet pipe. The first tube tube is formed by a spinning process and has a first inner space formed in a tube shape with one side thereof opened. On the other side, a first refrigerant inlet through which the first refrigerant of low temperature and high pressure flows and a second refrigerant inlet through which the second refrigerant of high- Thereby forming a second refrigerant outlet to be discharged. The second tube tube is manufactured by a spinning process, and a second inner space is formed in a tube shape with one side opened to connect with the open side of the first tube tube, and the first inner space and the second inner space And a second refrigerant inlet through which the first refrigerant flows out and a second refrigerant inlet through which the second refrigerant flows are formed on the other side. The coin tube is positioned in the heat exchange chamber in a spiral structure. The first refrigerant inlet tube is connected to one side of the coin tube and protrudes to the outside of the first refrigerant inlet. The first refrigerant outlet pipe is connected to the other side of the coin pipe and protrudes to the outside of the first refrigerant outlet. The second refrigerant inlet tube is connected to the second refrigerant inlet and protrudes outside the second tube tube. The second refrigerant outlet tube is connected to the second refrigerant outlet and protrudes outside the first tube tube.

In the heat exchanger according to the present invention, the first tube tube and the second tube tube are welded and joined together, the first refrigerant inlet tube and the first refrigerant inlet are welded to each other, The second refrigerant inlet port is welded and joined, the first refrigerant outlet pipe and the first refrigerant outlet are welded to each other, and the second refrigerant outlet pipe and the second refrigerant outlet are welded and joined together.

In the heat exchanger according to the present invention, the diameters of the first refrigerant inlet tube and the first refrigerant outlet tube may be smaller than or equal to the diameters of the second refrigerant inlet tube and the second refrigerant outlet tube.

The heat exchanger according to the present invention may further include at least one resistance film disposed between the coils of the coil pipe.

In the heat exchanger according to the present invention, the resistance film may include at least one upper resistance film disposed on the upper portion of the coil tube, and at least one lower resistance film disposed below the coil tube.

The present invention also relates to a method of manufacturing a spinneret, comprising the steps of: preparing a tube-shaped first tube tube having a first inner space formed by a spinning process and having an open side, forming a second inner space by a spinning process, Producing a tube; Forming a first refrigerant inlet and a second refrigerant outlet on one side of the first tube tube and forming a first refrigerant outlet and a second refrigerant inlet on the second tube tube; The second refrigerant inlet tube is positioned so as to protrude outside the second refrigerant inlet, the second refrigerant outlet tube is positioned so as to protrude outside the second refrigerant outlet, and the first refrigerant inlet tube And a first refrigerant outlet pipe connected to the second refrigerant outlet pipe and protruding outside the first refrigerant outlet; The open end of the first tube and the open end of the second tube are welded to each other to weld the first coolant inlet tube and the first coolant inlet to weld the second coolant inlet tube to the second coolant inlet tube, Welding and bonding the second refrigerant inlet and welding the first refrigerant outlet tube and the first refrigerant outlet to weld the second refrigerant outlet tube to weld the second refrigerant outlet tube and the second refrigerant outlet; The present invention also provides a method of manufacturing a heat exchanger.

In the heat exchanger according to the present invention, the first refrigerant inlet, the first refrigerant outlet, the second refrigerant inlet, and the second refrigerant outlet may be formed by at least one of a piercing process, a burning process, and a punching device.

In the heat exchanger according to the present invention, the burning process and the piercing process may be performed outside the first tube tube and the second tube tube or in the heat exchange chamber.

Since the heat exchanger according to the present invention is formed by spinning the tube tube, the manufacturing process can be simplified. Since spinning processing does not use the cap, the manufacturing cost can be reduced.

Also, since the heat exchanger according to the present invention has a difference in flow velocity between a low-temperature refrigerant and a high-temperature refrigerant, the temperature of the high-temperature refrigerant flowing at a low speed can be efficiently lowered to improve the efficiency of the refrigerating system.

Further, the heat exchanger according to the present invention includes a resistance film between the coils between the coils through which the high-temperature low-pressure refrigerant flows to increase the resistance of the passage, thereby allowing a sufficient time for heat exchange with the refrigerant at high temperature and low pressure to improve the efficiency of heat exchange, There is an advantage that explosion due to a sudden phase change can be prevented originally and damage to the compressor can be prevented.

FIG. 1 is a view illustrating a refrigeration system provided with a heat exchanger for a refrigerator, according to an embodiment of the present invention.
2 is a perspective view of a heat exchanger for a refrigerator according to an embodiment of the present invention.
3 is a cross-sectional view of a heat exchanger for a refrigerated train vehicle according to an embodiment of the present invention.
FIG. 4 is a perspective view illustrating a heat exchanger for a refrigerator according to another embodiment of the present invention. FIG.
5 is a cross-sectional view showing a heat exchanger for a refrigerated vehicle including a resistance film according to another embodiment of the present invention.
FIG. 6 is a flow chart of the method for manufacturing the refrigerant circuit heat exchanger of FIG. 2;
FIG. 7 is a cross-sectional view of the manufacturing method according to FIG. 6. FIG.

It should be noted that only the parts necessary for understanding the embodiment of the present invention will be described in the following invention, and the description of the other parts will be omitted so as not to disturb the gist of the present invention.

The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings, and the inventor should not be interpreted as a concept of terms to describe his or her invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention, so that various equivalents And variations are possible.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 1 is a view illustrating a refrigeration system provided with a heat exchanger for a refrigerator, according to an embodiment of the present invention.

1, a refrigeration system provided with a refrigerant heat exchanger 50 includes a condenser 10, an expansion valve 20, an evaporator 30, and a compressor 40, and includes a condenser 20, And a heat exchanger (50) is provided between the valves (30).

The condenser 10 condenses the heat of the high-temperature high-pressure refrigerant introduced from the compressor 40 into the first refrigerant of low temperature and high pressure by discharging it to the outside.

The expansion valve (20) lowers the pressure of the first refrigerant flowing through the condenser (10) to make it a low-temperature and low-pressure liquid refrigerant that can easily evaporate.

The evaporator 30 evaporates the low-temperature low-pressure liquid refrigerant flowing through the first refrigerant passage 91 through the expansion valve 20, and absorbs the surrounding heat to make the second refrigerant of high temperature and low pressure. Both ends of the first refrigerant passage 91 are connected to the expansion valve 20 and the evaporator 30, respectively.

The compressor (40) compresses the second refrigerant that has passed through the evaporator (30) to make the refrigerant of high temperature and high pressure. The high-temperature and high-pressure refrigerant passing through the compressor 40 enters the condenser 10 through the second refrigerant passage 93 and is condensed again to become the first refrigerant at low temperature and high pressure. As described above, when the first refrigerant passes through the expansion valve 20 ) Is repeated. Both ends of the second refrigerant passage 93 are connected to the compressor 40 and the condenser 10, respectively.

The heat exchanger (50) is located between the condenser (10) and the expansion valve (20). The heat exchanger (50) causes the first refrigerant of low temperature and high pressure flowing out from the condenser (10) and the second refrigerant of high temperature and low pressure flowing out of the evaporator (30) to make heat exchange. The first refrigerant condensed in the condenser 10 and brought to a low temperature and high pressure flows into the coil pipe 80 of the heat exchanger 50 through the first refrigerant inlet pipe 81 and is evaporated in the evaporator 30, And the second refrigerant flows into the tube tubes 60 and 70 of the heat exchanger 50 through the second refrigerant inlet tube 75. In the heat exchange chamber (55) of the heat exchanger (50), the first refrigerant and the second refrigerant come into contact with each other to perform heat exchange so that the temperature of the first refrigerant rises and the temperature of the second refrigerant falls. After the heat exchange, the first refrigerant flows out to the expansion valve 20 through the first refrigerant outlet pipe 83 and the second refrigerant flows out to the compressor 40 through the second refrigerant outlet pipe 87.

In other words, the heat exchanger 50 is connected to the low-temperature high-pressure first refrigerant flowing from the condenser 10 through the first refrigerant inlet pipe 81 and the second refrigerant introduced from the evaporator 30 through the second refrigerant inlet pipe 85 Is located between the condenser (10), the expansion valve (20), the evaporator (30), and the compressor (40) so that the second refrigerant of high temperature and low pressure is circulated through the refrigeration system.

FIG. 2 is a perspective view showing a heat exchanger for a refrigerator according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating a heat exchanger for a refrigerant vehicle according to an embodiment of the present invention.

2 and 3, the refrigerant circuit heat exchanger 50 includes a first tube 60, a second tube 70, a coin tube 80, a first refrigerant inlet tube 81, A refrigerant outlet pipe 83, a second refrigerant inlet pipe 85, and a second refrigerant outlet pipe 87. At this time, the first tube tube 60, the second tube tube 70, the coil tube 80, the first refrigerant inlet tube 81, the first refrigerant outlet tube 83, the second refrigerant inlet tube 85, And the second coolant outlet pipe 87 are made of a metal material, preferably copper or aluminum may be used.

The first tube 60 is manufactured by a spinning process in the form of a tube whose one side is opened to form a first internal space 69. A first refrigerant inlet 63 through which the first refrigerant of low temperature and high pressure flows and a second refrigerant outlet 65 through which the second refrigerant of high temperature and low pressure flows out are formed on the other side of the first tube tube 60.

The second tube tube 70 is manufactured by a spinning process in the form of a tube which is open on one side to form a second internal space 79 and is connected to the open side of the first tube tube 60, . A first refrigerant outlet (73) through which the first refrigerant flows out and a second refrigerant inlet (75) through which the second refrigerant flows are formed on the other side of the second tube pipe (70). And the second refrigerant flowing through the second refrigerant inlet (75) of the second tube tube (70) flows into the heat exchange chamber (55).

The coil tube 80 has a helical structure and is located in the heat exchange chamber 55. One side of the coil tube 80 is connected to the first refrigerant inlet 63 of the first tube tube 60, 1 refrigerant outlet (73). The first refrigerant flowing from the first refrigerant inlet (63) flows into the coin tube (80). The first refrigerant flowing in the coin tube (80) is brought into contact with the second refrigerant flowing in the heat exchange chamber (55) to perform heat exchange. The temperature of the first refrigerant at the low temperature and high pressure in the coin tube 80 is raised and the temperature of the second refrigerant in the heat exchange chamber 55 is lowered. At this time, since the flow rate of the second refrigerant is slower than the flow rate of the first refrigerant, the temperature of the second refrigerant can be efficiently lowered, thereby reducing the load on the compressor 40. Therefore, the compression efficiency of the compressor 40 is increased and energy can be saved.

The first refrigerant inlet pipe 81 is connected to one side of the coil pipe 80 and protrudes outside the first refrigerant inlet 63 of the first tube pipe 60 and is connected to the condenser 10. The first refrigerant inlet pipe 81 allows the first refrigerant of low temperature and high pressure, which is condensed in the condenser 10, to flow into the coil pipe 80. The first refrigerant inlet pipe 81 is welded and joined to the first refrigerant inlet 63 of the first tube pipe 60 so that the first refrigerant flowing in the coil pipe 80 and the second refrigerant flowing in the heat exchange chamber 55 Can be prevented.

The first refrigerant outlet pipe 83 is connected to the expansion valve 20 by being protruded to the outside of the first refrigerant outlet 73 of the second tube pipe 70 and being heated at the other side of the coin pipe 80. The first refrigerant flowing in the coil pipe 80 flows out through the first refrigerant outlet pipe 83 and the discharged first refrigerant flows to the expansion valve 20. [ The first refrigerant outlet pipe 83 is welded and joined to the first refrigerant outlet 73 of the second tube pipe 70 so that the first refrigerant flowing in the coil pipe 80 and the second refrigerant flowing in the heat exchange chamber 55 Can be prevented.

The second refrigerant inlet pipe 85 is connected to the second refrigerant inlet 75 of the second tube pipe 70 and protrudes outside the second refrigerant inlet 75 to be connected to the evaporator 30. The second refrigerant inlet pipe (85) allows the second refrigerant of high temperature and low pressure, which is produced by evaporation in the evaporator (30), to flow into the heat exchange chamber (55). The second refrigerant flowing into the second refrigerant inlet pipe (85) and flowing in the heat exchange chamber (55) is in contact with the first refrigerant flowing in the coil pipe (80) to perform heat exchange. The second refrigerant inlet pipe 85 is welded and joined to the second refrigerant inlet 75 of the second tube pipe 70 to prevent leakage of the second refrigerant flowing through the heat exchange chamber 55 and heat loss.

The second refrigerant outlet pipe 87 is connected to the second refrigerant outlet 65 of the first tube pipe 60 and protrudes outside the second refrigerant outlet 65 and is connected to the compressor 40. The second refrigerant outlet pipe (87) allows the second refrigerant flowing out of the heat exchange chamber (55) to flow to the compressor (40). The second refrigerant outlet pipe 87 is welded to the second refrigerant outlet 65 of the first tube pipe 60 to prevent leakage of the second refrigerant flowing through the heat exchange chamber 55 and heat loss.

The diameters of the second refrigerant inlet pipe 85 and the second refrigerant outlet pipe 87 may be equal to or greater than the diameters of the first refrigerant inlet pipe 81 and the first refrigerant outlet pipe 83. Since the diameters of the second refrigerant inlet pipe 85 and the second refrigerant outlet pipe 87 are equal to or larger than the diameters of the first refrigerant inlet pipe 81 and the first refrigerant outlet pipe 83, The flow rate of the second refrigerant flowing into the first refrigerant inlet pipe 85 becomes slower than the flow rate of the first refrigerant flowing into the first refrigerant inlet pipe 81 and is effective to lower the temperature of the second refrigerant.

4 is a perspective view showing a heat exchanger 150 for a refrigerator compartment including resistance films 91 and 93 according to another embodiment of the present invention, 93 of the refrigerant heat exchanger of the present invention.

4 and 5, a refrigerant heat exchanger 150 according to another embodiment of the present invention includes a refrigerant heat exchanger 50 and resistance films 91 and 93 according to an embodiment of the present invention. Except for this, they have substantially the same configuration. Therefore, redundant description of the same configuration will be omitted, and the same names and the same reference numerals will be given to the same configurations.

A refrigerator top heat exchanger 150 including resistance films 91 and 93 according to another embodiment of the present invention includes at least one upper resistance film 91 between coils on the coil tube 80, At least one lower resistive film 93 may be disposed between the coils under the lower electrode 80, but the present invention is not limited thereto. For example, only one resistive membrane may be disposed and may be disposed at the top, bottom or middle of the coin tube 80. The upper and lower resistive films 91 and 93 disposed between the coils increase the resistance of the passage to slow the flow rate of the second refrigerant at a high temperature and a low pressure and to exchange heat with the first refrigerant flowing through the coil tube 80 Temperature can be lowered.

A method of manufacturing the refrigerant heat exchanger 50 according to the embodiment of the present invention will be described with reference to FIGS. 6 and 7. FIG. 6 is a flowchart illustrating a method of manufacturing a refrigerant heat exchanger 50 according to an embodiment of the present invention.

The method for manufacturing a refrigerant circuit heat exchanger 50 according to the present invention includes steps S101 to S101 of manufacturing a first tube tube 60 and a second tube tube 70 by spinning processing, (S103) forming a coolant inlet port and an outlet respectively on both sides, placing the coin tube in the heat exchange chamber (S105), and welding and joining both sides of the tube tube (S107).

First, in step S101, a tube-shaped first tube tube 60 and a second tube tube 70, one side of which is open in the spinning process, are manufactured. Conventional tube tubes have been sealed to both sides with caps to maintain airtightness. In this case, it is difficult to uniformly weld the entire outer circumferential surface of the cap, so that there is a large amount of water leakage, and the time and cost for manufacturing the cap have increased. On the other hand, the heat exchanger (50) for a refrigerator according to the present invention manufactures the tube tubes (60, 70) in a spinning process without a cap, thereby simplifying the process and reducing the cost.

Next, in step S103, a first refrigerant inlet 63 and a second refrigerant outlet 65 are formed on one side of the first tube tube 60, and a first refrigerant outlet 65 is formed on one side of the second tube tube 70 73 and the second refrigerant outlet 75 are formed. The first refrigerant inlet 63, the second refrigerant inlet 63, the first refrigerant outlet 73, and the second refrigerant inlet 75 may be formed by at least one of a piercing process, a burning process, and a punching process. At this time, the piercing process and the burning process may be performed outside the first tube tube 60 and the second tube tube 70, or in the first internal space 69 and the second internal space 79. The burrs generated after the burning process can be removed and used, but the present invention is not limited thereto.

Next, referring to FIG. 7, in step S105, the coin tube 80 is positioned between the first and second inner spaces 69 and 79 of the first tube tube 60 and the second tube tube 70, respectively. The first refrigerant inlet pipe 81 connected to one side of the coin pipe 80 is positioned so as to protrude to the outside of the first refrigerant inlet 63 of the first tube pipe 60 and the second refrigerant inlet pipe 81 connected to the other side of the coin pipe 80 1 refrigerant outlet tube 83 is positioned so as to protrude to the outside of the first refrigerant outlet 73 of the second tube tube 70. The second refrigerant inlet tube 85 is positioned so as to protrude out of the second refrigerant inlet 75 of the second tube tube 70 and the second refrigerant outlet tube 87 is located at the second And is positioned so as to protrude out of the refrigerant outlet (65).

Next, in step S107, the open side of the first tube tube 60 and the open side of the second tube tube 70 are welded and bonded. The first refrigerant inlet tube 81 is welded and joined to the first refrigerant inlet 63 of the first tube tube 60 and the second refrigerant outlet tube 87 is welded to the second refrigerant inlet 63 of the first tube tube 60, And welded to the outlet (65). The first refrigerant outlet tube 83 is welded to and joined to the first refrigerant outlet 73 of the second tube tube 70 and the second refrigerant inlet tube 85 is welded to the second refrigerant outlet tube 73 of the second tube tube 70, The heat exchanger 50 for the refrigerator compartment can be obtained by welding and joining with the inlet 75.

It should be noted that the embodiments disclosed in the present specification and drawings are only illustrative of specific examples for the purpose of understanding, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: condenser 20: expansion valve
30: Evaporator 40: Compressor
50, 150: heat exchanger 55: heat exchange chamber
60: first tube 63: first refrigerant inlet
65: second refrigerant outlet 69: first inner space
70: second tube 73: first refrigerant outlet
75: second refrigerant inlet 79: second inner space
80: Coil tube 81: First refrigerant inlet tube
83: first refrigerant outlet pipe 85: second refrigerant inlet pipe
87: second refrigerant outlet pipe 91: upper resistance film
93: bottom resistive film

Claims (8)

And a second refrigerant outlet through which the first refrigerant at a low temperature and a high pressure is introduced and a second refrigerant outlet through which the second refrigerant at a high temperature and a low pressure flows out are formed at the other side, A first tube tube formed;
A second inner space is formed in the shape of a tube which is manufactured by the spinning process and one side is opened and connected to the open side of the first tube tube, and the first inner space and the second inner space are integrated to form a heat exchange chamber A second tube tube having a first refrigerant outlet through which the first refrigerant flows out and a second refrigerant inlet through which the second refrigerant flows;
A helical coil tube positioned in the heat exchange chamber;
A first refrigerant inlet pipe connected to one side of the coin pipe and protruding outside the first refrigerant inlet;
A first refrigerant outlet pipe connected to the other side of the coin pipe and protruding outside the first refrigerant outlet;
A second refrigerant inlet pipe connected to the second refrigerant inlet and protruding outside the second tube tube; And
A second refrigerant outlet pipe connected to the second refrigerant outlet and protruding outside the first tube tube;
And a heat exchanger for cooling the refrigerant. The method according to claim 1,
The open end of the first tube and the open end of the second tube are welded to each other to weld the first coolant inlet tube and the first coolant inlet to weld the second coolant inlet tube to the second coolant inlet tube, And the second refrigerant inlet port is welded to join the first refrigerant outlet pipe and the first refrigerant outlet and welded to each other, and the second refrigerant outlet pipe and the second refrigerant outlet are welded and joined together. Heat exchanger for refrigerator. The refrigerant circuit heat exchanger according to claim 1, wherein a diameter of the first refrigerant inlet tube and a first refrigerant outlet tube is smaller than or equal to a diameter of the second refrigerant inlet tube and the second refrigerant outlet tube. The method according to claim 1,
At least one resistive film disposed between the coils of the coil tube;
Further comprising a heat exchanger for cooling the refrigerant. The method of claim 3,
Wherein the resistance film includes at least one upper resistance film disposed on the upper portion of the coil tube and at least one lower resistance film disposed below the coil tube. A step of preparing a tube-shaped first tube tube having a first inner space formed by a spinning process and an inner tube-shaped second tube tube having a second inner space formed by a spinning process, ;
Forming a first refrigerant inlet and a second refrigerant outlet on the other side of the first tube tube and forming a first refrigerant outlet and a second refrigerant inlet on the other side of the second tube tube;
The second refrigerant inlet tube is positioned so as to protrude outside the second refrigerant inlet, the second refrigerant outlet tube is positioned so as to protrude outside the second refrigerant outlet, and the first refrigerant inlet tube And a first refrigerant outlet pipe connected to the second refrigerant outlet pipe and protruding outside the first refrigerant outlet;
The open end of the first tube and the open end of the second tube are welded to each other to weld the first coolant inlet tube and the first coolant inlet to weld the second coolant inlet tube to the second coolant inlet tube, Welding and joining the second refrigerant inlet and the first refrigerant outlet tube and the first refrigerant outlet; welding and joining the second refrigerant outlet tube and the second refrigerant outlet;
Wherein the heat exchanger includes a first heat exchanger and a second heat exchanger. The method according to claim 6,
Wherein the first refrigerant inlet, the first refrigerant outlet, the second refrigerant inlet, and the second refrigerant outlet are formed by at least one of a piercing process, a burning process, and a punching device. . The method according to claim 6,
Wherein the burning process and the piercing process are performed outside the first tube tube and the second tube tube or in the heat exchange chamber.
KR1020150055643A 2015-04-21 2015-04-21 Heat exchanger for refrigerator vehicle and manufacturing thereof KR20160125033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150055643A KR20160125033A (en) 2015-04-21 2015-04-21 Heat exchanger for refrigerator vehicle and manufacturing thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150055643A KR20160125033A (en) 2015-04-21 2015-04-21 Heat exchanger for refrigerator vehicle and manufacturing thereof

Publications (1)

Publication Number Publication Date
KR20160125033A true KR20160125033A (en) 2016-10-31

Family

ID=57446076

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150055643A KR20160125033A (en) 2015-04-21 2015-04-21 Heat exchanger for refrigerator vehicle and manufacturing thereof

Country Status (1)

Country Link
KR (1) KR20160125033A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200120020A (en) * 2019-04-11 2020-10-21 김성춘 Quick cooling device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200120020A (en) * 2019-04-11 2020-10-21 김성춘 Quick cooling device

Similar Documents

Publication Publication Date Title
US7685839B2 (en) Refrigeration system
JP5539996B2 (en) Liquid and vapor separation in a transcritical refrigerant cycle.
KR101929910B1 (en) Cold reserving heat exchanger
US11059345B2 (en) Storage evaporator having phase change material for use in vehicle air conditioning system
CN102788452A (en) Condenser for vehicle and air conditioning system for vehicle
JP2007218459A (en) Refrigerating cycle device and cool box
US6170272B1 (en) Refrigeration system with inertial subcooling
US11365920B2 (en) Heat exchanger with refrigerant storage volume
JP4508006B2 (en) Refrigeration cycle equipment for vehicles
US20050039897A1 (en) Internal heat exchanger
JP5509942B2 (en) Ejector unit, heat exchanger unit, and refrigerant short circuit detection method for ejector unit
JP2009002576A (en) Refrigerating cycle apparatus
KR20160125033A (en) Heat exchanger for refrigerator vehicle and manufacturing thereof
JP2000205735A (en) Refrigerator
US20130299143A1 (en) Internal heat exchanger
KR100704364B1 (en) Structure condenser for kim-chi storage
KR20160125032A (en) Heat exchanger for refrigerator vehicle and manufacturing thereof
KR101797177B1 (en) Double pipe heat exchanger method of maufacturing and the double pipe
KR20090110647A (en) Internal heat exchanger with accumulator of air conditioner using CO2
KR100863351B1 (en) Cooling apparatus
CN215523909U (en) Double-tank refrigerating system
CN102365519A (en) Heat exchanger
KR101385173B1 (en) Cooling apparatus for refrigeration car
JP4341492B2 (en) Refrigerant cooling circuit
JPH05126420A (en) Liquid cooler for refrigerating apparatus

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment