KR102289749B1 - Tube for heat exchanger - Google Patents

Abstract

The invention for a tube for a heat exchanger is disclosed. The tube for a heat exchanger of the present invention includes: a tube in which a plate-shaped member is bent to form a passage through which a heat exchange medium moves, and a channel formed in a curved shape installed inside the tube and dividing the inner space of the tube into a plurality of channels It is connected to both ends of the part and the tube, and is bent to the inside of the tube to be coupled, and it is characterized in that it includes a binding pressing part for pressing the channel forming part.

Description

Tube for heat exchanger {TUBE FOR HEAT EXCHANGER}

The present invention relates to a tube for a heat exchanger, and more particularly, to a tube for a heat exchanger capable of improving productivity by easily manufacturing a tube having a fin inserted therein.

In general, a heat exchanger among components constituting an air conditioner for a vehicle implements a function of cooling or heating by changing a state of a heat exchange medium or heat exchange with external air.

The heat exchanger includes a pair of header tanks spaced apart from each other by a predetermined distance and provided in parallel, and a tube having both ends fixed to the header tank and forming a flow path of a heat exchange medium, and a heat dissipation fin installed between the tubes.

The tube can be manufactured by extrusion or folding plate, and is selectively used according to the type of heat exchanger and required specifications.

Conventionally, when cutting a tube to a required length, there is a problem in that a processing defect occurs due to the inclination of the pin inserted therein, and there is a problem in that the productivity is lowered because the work in which both ends of the tube are folded and fixed is difficult. Therefore, there is a need to improve it.

Background art of the present invention is published in Korean Patent Publication No. 2017-0008424 (published on January 24, 2017, title of the invention: outdoor heat exchanger).

The present invention was created to improve the above problems, and an object of the present invention is to provide a tube for a heat exchanger capable of improving productivity by easily manufacturing a tube having a fin inserted therein.

A tube for a heat exchanger according to the present invention includes: a tube in which a plate-shaped member is bent to form a passage through which a heat exchange medium moves, and a channel installed in a curved shape inside the tube and dividing the inner space of the tube into a plurality of channels It is characterized in that it is connected to both ends of the forming portion and the tube, and is bent to the inside of the tube to be coupled, and includes a binding pressing portion for pressing the channel forming portion.

In addition, the tube includes a tube body in which a plate-shaped member is bent in a shape surrounding the channel forming part and both ends are connected to the binding and pressing part, and at least one of both sides of the tube body facing the end of the channel forming part is a channel It is characterized in that the pressing in a shape surrounding the end of the forming portion to form a pressing fixing portion constraining the movement of the channel forming portion.

In addition, the pressing fixing part is located on one side of the tube body and characterized in that it includes a first fixing part installed in a shape surrounding one end of the channel forming part.

In addition, the pressing fixing part is located on the other side of the tube body and characterized in that it further comprises a second fixing part installed in a shape surrounding the other end of the channel forming part.

In addition, the channel forming unit includes a fixed channel that is pressed by the binding pressure unit and fixed to the inside of the tube, an extension channel extending on both sides of the fixed channel and forming a plurality of channels on the inside of the tube by a curved shape, and the extension channel It is characterized in that it comprises a constraint member extending from the end is fixed to the binding pressing unit.

In addition, the binding pressure part is connected to one end of the tube and curved toward the inside of the tube, and the other end of the tube is connected to the other end of the tube and bent toward the inside of the tube to surround the end of the first pressing part. It is characterized in that it comprises a second pressing part for pressing the channel.

In addition, the second pressing unit is bent inside the tube and installed in a shape extending from the bending body and extending from the bending body to be installed in parallel with the first pressing unit to surround the end of the first pressing unit and pressing the fixed channel in a direction in contact with the tube. It is characterized in that it includes a pressing protrusion.

In addition, the pressing protrusion is characterized in that it is formed in a "V" shape or a "U" shape.

The tube for a heat exchanger according to the present invention can reduce the production time because both ends of the tube can be maintained in a fixed state by the binding pressure unit using a fitting-type coupling structure, and the durability of the product is improved by preventing the tube from loosening. can be improved

In addition, in the present invention, since the movement of the channel forming unit is restricted by the binding pressing unit and the pressing fixing unit, it is possible to prevent the channel forming unit from moving to one side during the tube cutting operation, thereby reducing the occurrence of processing defects.

1 is a view schematically illustrating a state in which a tube for a heat exchanger according to an embodiment of the present invention is installed.
2 is a cross-sectional view of a tube for a heat exchanger according to an embodiment of the present invention.
3 is a view showing the shape of the tube before processing according to an embodiment of the present invention.
4 is a view showing a state in which the tube according to an embodiment of the present invention is bent in a shape surrounding the end of the channel forming part.
5 is a cross-sectional view of a tube for a heat exchanger according to another embodiment of the present invention.

Hereinafter, a tube for a heat exchanger according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is a view schematically showing a state in which a tube for a heat exchanger according to an embodiment of the present invention is installed, FIG. 2 is a cross-sectional view of a tube for a heat exchanger according to an embodiment of the present invention, and FIG. It is a view showing the shape of the tube before processing according to the embodiment, and FIG. 4 is a view showing a state in which the tube according to an embodiment of the present invention is bent to a shape surrounding the end of the channel forming part.

As shown in FIG. 1 , the heat exchanger 1 in which heat exchange of a heat exchange medium is made includes a header 5 , a heat dissipation fin 7 , and a tube 10 for a heat exchanger. Two headers 5 are installed side by side as a pair, and a plurality of heat exchanger tubes 10 connecting the headers 5 are installed in a horizontal direction. The heat dissipation fins 7 bent in a wave pattern shape are installed on the upper and lower sides of the heat exchanger tube 10 to increase the heat dissipation area.

2 to 4, the tube 10 for a heat exchanger according to an embodiment of the present invention includes a tube 20 in which a plate-shaped member is bent to form a passage through which a heat exchange medium moves, and the tube; A channel forming part 30 installed in a curved shape on the inside of the tube 20 and dividing the inner space of the tube 20 into a plurality of channels, each connected to both ends of the tube 20, and the inner side of the tube 20 It is bent to be coupled and includes a binding pressure unit 40 for pressing the channel forming unit 30 .

The tube 20 may be formed in various shapes within the technical idea in which a plate-shaped member is bent to form a closed cross-section that is a passage through which the heat exchange medium moves. The tube 20 according to an embodiment is bent in a shape that a plate-shaped member surrounds the channel forming part 30 , and both ends located in the central part include a tube body 22 connected to the binding and pressing part 40 . do. The plate-shaped tube body 22 is bent in a shape surrounding the channel forming part 30 to form an inner space for the heat exchange medium to move. Both ends of the tube body 22 have been described as an example of being located in the center of the upper side (hereinafter, based on FIG. 2) of the tube 20, but not limited thereto, and in a position moved from the center of the tube 20 to one side or the other side. Both ends of the tube body 22 may be located. In addition, various modifications such as both ends of the tube body 22 may be located on the lower side of the tube 20 are possible.

At least one of both sides of the tube body 22 facing the end of the channel forming unit 30 is pressed in a shape surrounding the end of the channel forming unit 30 to restrict the movement of the channel forming unit 30 . A fixing part 24 is formed. This pressing fixing unit 24, in order to fix the channel forming unit 30, both sides of the tube 20 (refer to FIG. 2 left and right) press the end of the channel forming unit 30 in a variety of technical ideas having a shape It may be formed in a shape.

The pressing fixing part 24 according to an embodiment is located on one side (hereinafter, based on the left side of FIG. 2 ) of the tube body 22 and is installed in a shape surrounding one end of the channel forming part 30. The first fixing part ( 26), and a second fixing part 28 located on the other side of the tube body 22 (hereinafter referred to as the right side of FIG. 2 ) and installed in a shape surrounding the other end of the channel forming part 30 .

The tube 10 for the heat exchanger may form only one of the first fixing part 26 and the second fixing part 28 within the technical idea for restricting the movement of the channel forming part 30, and if necessary, Various modifications such as being able to form both the first fixing part 26 and the second fixing part 28 are possible.

The first fixing part 26 bends one side of the tube body 22 facing one end of the channel forming part 30 to form a "U" shape surrounding one end of the channel forming part 30 . Accordingly, one end of the channel forming part 30 is sandwiched inside the first fixing part 26 to restrict movement.

The second fixing unit 28 is formed in a “U” shape surrounding the other end of the channel forming unit 30 by bending the other side of the tube body 22 facing the other end of the channel forming unit 30 . Accordingly, the other end of the channel forming part 30 is sandwiched inside the second fixing part 28 to restrict movement.

The channel forming unit 30 is installed in a curved shape inside the tube 20 and divides the inner space of the tube 20 into a plurality of channels. The channel forming unit 30 may be inserted into the tube 20 to form a plurality of channels through which a heat exchange medium such as a refrigerant moves, and may be formed in various shapes within the technical idea. The channel forming unit 30 according to an embodiment includes a fixed channel 32 , an extension channel 34 , and a restraining member 36 .

The fixed channel 32 is pressurized by the binding pressure unit 40 and has a flat plate shape fixed to the inside of the tube 20 . The upper side of the fixed channel 32 (refer to FIG. 2 ) is in contact with the binding pressure unit 40 , and the lower side of the fixed channel 32 is in contact with the inner surface of the tube 20 .

The extension channel 34 extends to both sides of the fixed channel 32 , and forms a plurality of channels on the inside of the tube 20 by a curved shape. The extension channel 34 is bent in a wave pattern shape to alternately contact the upper and lower sides of the closed cross-section of the tube body 22, thereby forming a plurality of channels. In addition, since the extension channel 34 is formed of a material having a high heat transfer rate, the heat exchange area of the heat exchange medium passing through the heat exchanger tube 10 is increased.

The restraining member 36 has a plate shape extending from the end of the extension channel 34 and fixed to the pressing fixing part 24 . The fixed channel 32 is located in the central portion of the channel forming unit 30 , and the extension channels 34 are connected to both sides of the fixed channel 32 , respectively. In addition, the constraining members 36 are respectively connected to the ends of the extension channels 34 .

Since both ends of the tube 20 are convexly protruded to fix both ends of the channel forming part 30, the structural rigidity of both sides of the tube 20 is increased, so foreign substances such as stones that can be introduced through the grill of the vehicle It is possible to reduce a phenomenon in which the heat exchange medium leaks to the outside of the tube 20 due to the breakage of the tube 20 .

The binding pressing unit 40 is respectively connected to both ends of the tube 20 , and is bent to the inside of the tube 20 to press the channel forming unit 30 while being coupled. Since both ends of the tube 20 are connected to the binding pressing part 40 in the central part of the tube 20 where the closed section of the tube 20 is made, the binding pressing part 40 forms a pair of two members.

One member of the binding pressing unit 40 has a “V” or “U” shape to press the channel forming unit 30 , and the other member of the binding pressing unit 40 has a “V” or “U” shape. "It has a structure that is inserted inside the shape of a ruler.

At this time, since the "V"-shaped bent part or the "U"-shaped round part is in contact with the fixed channel 32 of the channel forming part 30 to restrict the movement of the channel forming part 30, the heat exchanger tube ( In the manufacturing process of 10), the flow of the channel forming part 30 is prevented.

The binding pressing unit 40 according to an embodiment includes a first pressing unit 42 and a second pressing unit 44 . The first pressing part 42 is connected to one end of the tube 20 , bent toward the inside of the tube 20 and installed in a vertical direction (refer to FIG. 2 ).

The second pressing part 44 is connected to the other end of the tube 20 , and is bent toward the inside of the tube 20 to be installed in a shape surrounding the lower end of the first pressing part 42 . In addition, since the lower side of the second pressing part 44 presses the fixed channel 32 , the movement of the fixed channel 32 is restricted.

The second pressing unit 44 according to an embodiment includes a bending body 46 bent inwardly of the tube 20 and installed in parallel with the first pressing unit 42, and extending from the bending body 46, It is installed in a shape surrounding the end of the first pressing part 42 and includes a pressing protrusion 48 for pressing the fixed channel 32 in a direction in contact with the tube 20 . The bending body 46 faces the first pressing part 42 and is installed in the vertical direction toward the inside of the tube 20 , and the pressing protrusion 48 is connected to the lower side of the bending body 46 . Since the pressing protrusion 48 is formed in a “V” shape or a “U” shape, the lower end of the first pressing part 42 is inserted through the upper side of the pressing protrusion 48 to restrict movement.

As used in this specification and claims, 'one side' and 'the other side' are used in the meaning of indicating a direction. That is, in the embodiment shown in FIG. 2 , one side represents the left side of the heat exchanger tube 10 , and the other side represents the right side of the heat exchanger tube 10 .

On the other hand, in an embodiment of the present invention, the pressing fixing part 24 for fixing the channel forming part 30 has been described as an example composed of the first fixing part 26 and the second fixing part 28, but this is an example The number of the pressure fixing unit 24 may be changed as necessary.

In addition, although not shown, the pressure fixing unit 24 may be installed above or below the tube 20, as well as the installation location and the number of the pressure fixing unit 24 may be variously implemented.

Hereinafter, the assembly and operating state of the tube 10 for a heat exchanger according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 3, after positioning the channel forming part 30 on the upper side of the plate-shaped tube body 22, both ends of the tube body 22 are pressed as shown in FIG. 24) is formed. Since the pressing fixing unit 24 is bent in a shape surrounding the end of the channel forming unit 30 to press the end of the channel forming unit 30 , the movement of the channel forming unit 30 is restricted.

4 and 5, in a state in which the second pressing part 44 connected to the other end of the tube body 22 is in contact with the fixed channel 32 of the channel forming part 30, the tube body 22 ), the first pressing portion 42 connected to one end is inserted into the concave groove portion of the upper side of the pressing projection (48). Accordingly, the first pressing part 42 is inserted into the groove provided on the upper side of the second pressing part 44 to constrain the upper movement of the second pressing part 44 .

In addition, since the lower side of the second pressing part 44 presses the fixed channel 32 in a direction in contact with the fixed channel 32 , the movement of the channel forming part 30 is restricted. Since movement of the channel forming part 30 is restricted by the pressing fixing part 24 and the binding pressing part 40, the cutting operation of the heat exchanger tube 10 can be made more stably.

In the tube 10 for a heat exchanger according to an embodiment of the present invention, the process of fixing the channel forming part 30 to the inside of the tube 20 is simplified, and thus productivity is improved compared to the related art. In addition, the passage area and heat transfer area for moving the heat exchange medium are increased compared to the prior art, so that heat dissipation performance and heat transfer efficiency can be improved. In addition, since the tube 20 into which the channel forming part 30 is inserted is easily manufactured, the thickness of the channel and the tube 20 is reduced compared to the existing extruded type tube, so that the weight compared to the heat exchanger 1 of the same performance is reduced. can be reduced.

Hereinafter, a tube 11 for a heat exchanger according to another embodiment of the present invention will be described with reference to the drawings.

For convenience of description, components having the same configuration and operation as those of an embodiment of the present invention are referred to by the same reference numerals, and detailed description thereof will be omitted.

5 is a cross-sectional view of a tube for a heat exchanger according to another embodiment of the present invention.

5, since the first fixing part 26 is formed only on one side of the tube 20 in the heat exchanger tube 11 according to another embodiment of the present invention, the movement of the channel forming part 30 is restricted. do. Alternatively, an embodiment in which a separate fixing part is formed on the other side instead of one side of the tube 20 to restrict the movement of the channel forming part 30 will be another embodiment of the present invention.

Accordingly, one end or the other end of the channel forming unit 30 is fixed by the pressing and fixing unit 25 , and since the middle part of the channel forming unit 30 is also fixed by the pressing of the binding pressing unit 40 , the channel forming unit 30 ) can be constrained.

2 and 5, when the tube (10, 11) for a heat exchanger according to the present invention is cut to a set length along with the channel forming part 30 during the manufacturing process, the tube ( 20), a structure for restricting the movement of the channel forming unit 30 is provided in a double manner so that the shape of the channel is not deformed due to the movement of the channel forming unit 30 inserted in the inside.

In addition, the first fixing part 26 and the second fixing part 28 are formed at both ends of the tube 20, or the first fixing part 26 is formed at one end of the tube 20, or the tube 20 Since the second fixing part 28 is formed at the other end of the to increase the thickness, the structural rigidity of the end portion of the tube 20 is increased. Therefore, even when a stone or a foreign material is thrown and impacts the end of the tube 20 when the vehicle is running, it is possible to prevent the refrigerant, which is a heat exchange medium, inside the tube 20 from leaking due to the breakage of the tube 20 .

As described above, according to the present invention, since both ends of the tube 20 can be maintained in a fixed state by the binding pressure unit 40 using a fitting-type coupling structure, the production time can be shortened, and the tube 20 It is possible to improve the durability of the product by preventing the loosening of the product. In addition, since the movement of the channel forming unit 30 is restricted by the binding pressing unit 40 and the pressing fixing units 24 and 25, the phenomenon that the channel forming unit 30 is moved to one side during the cutting operation of the tube 20 is prevented. It can be prevented and the occurrence of machining defects can be reduced.

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. will be. Therefore, the true technical protection scope of the present invention should be defined by the following claims.

1: heat exchanger heat exchange medium 5: header 7: heat sink fin
10,11: tube for heat exchanger
20: tube 22: tube body 24,25: pressure fixing part 26: first fixing part 28: second fixing part
30: channel forming part 32: fixed channel 34: extended channel 36: constraining member
40: binding pressing unit 42: first pressing unit 44: second pressing unit 46: bending body 48: pressing protrusion

Claims (8)

a tube in which the plate-shaped member is bent to form a passage through which the heat exchange medium is moved;
a channel forming part installed in a curved shape inside the tube and dividing the inner space of the tube into a plurality of channels; and
It includes; a binding pressure unit connected to both ends of the tube, bent to the inside of the tube, the coupling is made, and pressing the channel forming unit;
The channel forming unit may include a fixed channel that is pressed by the binding pressing unit and fixed to the inside of the tube;
an extension channel extending to both sides of the fixed channel and forming a plurality of channels inside the tube by a curved shape; and
Containing a constraining member extending from the end of the extension channel;
The binding and pressing unit may include: a first pressing unit connected to one end of the tube and bent toward the inside of the tube; and
It is connected to the other end of the tube, is bent toward the inside of the tube is installed in a shape surrounding the end of the first pressing part, and a second pressing part for pressing the fixed channel;
The second pressing unit may include: a bent body bent inwardly of the tube and installed parallel to the first pressing unit; and
and a pressing protrusion extending from the bending body and installed in a shape surrounding the end of the first pressing part, pressing the fixed channel in a direction in contact with the tube; and
The first pressing part is inserted into the concave groove provided on the upper side of the pressing protrusion to restrict the movement of the second pressing part.
The method of claim 1,
The tube is bent in a shape that a plate-shaped member surrounds the channel forming part, and both ends of the tube body are connected to the binding and pressing part;
At least one of both side surfaces of the tube body facing the end of the channel forming part is pressed in a shape surrounding the end of the channel forming part to form a pressing fixing part for restricting the movement of the channel forming part; tube for use.
3. The method of claim 2,
The pressure fixing part is located on one side of the tube body, the first fixing part is installed in a shape surrounding one end of the channel forming part; The tube for a heat exchanger comprising a.
4. The method of claim 3,
The pressure fixing part is located on the other side of the tube body, the second fixing part is installed in a shape surrounding the other end of the channel forming part; Heat exchanger tube, characterized in that it further comprises.
delete delete delete The method of claim 1,
The pressure protrusion is a tube for a heat exchanger, characterized in that formed in a "V" shape or a "U" shape.

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