KR20130090108A - Fin type heat exchanger and manufacturing method of heat exchanger - Google Patents

Abstract

PURPOSE: A plate-type heat exchanger and a manufacturing method thereof are provided to expand a contact area between working fluid and fluid pipes by forming a spiral groove part on each fluid pipe, thereby increasing heat exchange efficiency. CONSTITUTION: A plate-type heat exchanger comprises fluid pipes (10) and turn fins (20). Working fluid passes the fluid pipes bent in multiple stages. The turn fins are spirally wound on the fluid pipes. A spiral groove part is formed on each fluid pipe in a winding direction of the turn fins.

Description

Fin type heat exchanger and manufacturing method thereof {FIN TYPE HEAT EXCHANGER AND MANUFACTURING METHOD OF HEAT EXCHANGER}

The present invention relates to a fin heat exchanger and a method for manufacturing the same, and more particularly, a spiral turn pin is wound tightly on a fluid pipe, and a spiral groove portion is formed in the fluid pipe, thereby increasing the contact area between the working fluid and the fluid pipe. The present invention relates to a fin heat exchanger and a method for manufacturing the same, which can improve heat exchange performance.

Recently, efforts to develop high efficiency heat exchangers for efficient use of energy have been made to reduce serious waste of energy.

As a heat exchanger generally used, air conditioners, such as a refrigerator and an air conditioner, are mentioned. In order to increase the heat exchange performance of the heat exchanger, it is necessary to consider the heat transfer performance of the internal condenser and evaporator.

In general, the entire cycle of an air conditioner or a freezer shows that a gaseous refrigerant enters the compressor and is compressed, and the compressed high temperature refrigerant is supplied to the condenser. The compressed refrigerant releases heat from the condenser into the atmosphere, and the internal pressure drops through the nozzle due to the pressure drop in the state of the supercooled liquid. The refrigerant supplied to the evaporator then absorbs heat from the surroundings and evaporates and returns to the compressor.

Heat exchange performance in the condenser or the evaporator is the most important in the entire cycle of the heat exchanger such as an air conditioner or a freezer, and conventional fin-type heat exchangers are used to improve such heat exchange performance.

Related prior art is Republic of Korea Patent Publication No. 0469321 (2005. 01. 21. registered, the name of the invention: fin tube type heat exchanger and manufacturing method).

An object of the present invention is the spiral-shaped turn pin is wound tightly in the fluid pipe, the spiral groove portion is formed in the fluid pipe is expanded, thereby increasing the contact area of the working fluid and the fluid pipe, thereby improving the heat exchange performance fin-type heat exchange It is to provide a tile and a method for producing the same.

Fin heat exchanger according to the present invention for achieving the above object is a fluid pipe bent in multiple stages so that the working fluid passes through the inside; And a turn pin wound on the fluid pipe in a spiral shape to be in close contact with the fluid pipe. It includes, The fluid pipe, characterized in that the spiral groove portion of the same spiral shape as the winding direction of the turn pin corresponding to the winding position of the turn pin is formed.

Here, the fluid pipe is characterized in that it comprises a straight section spaced apart from each other and the turn section is wound and the curved section is formed to be in communication with each other the straight section.

Here, the turn pin, characterized in that it comprises a close contact pin portion in close contact with the fluid pipe wound in the form of a spiral, and a heat radiation fin portion extending from the contact pin portion to protrude from the fluid pipe.

Here, the spiral groove portion, characterized in that the inside of the fluid pipe is formed to be extended so that the turn pin is in close contact.

Here, the fixing bracket is coupled to the fluid pipe so that the fluid pipe is bent to maintain the arrangement; Further comprising:

Method for producing a fin-type heat exchanger according to the present invention for achieving the above object is an arrangement step of arranging a spiral turn pin around the fluid pipe through which the working fluid passes through; After the arranging step, expanding the fluid pipe and the turn pin in close contact with each other to form a spiral groove in a spiral shape in the fluid pipe; And bending the fluid pipe in multiple stages after the expansion step. Characterized in that it comprises a.

Here, the expanding step, characterized in that to expand the inside of the fluid pipe to form the spiral groove portion.

Here, the expanding step, characterized in that for passing the pipe line expansion member inside the fluid pipe so that the inside of the fluid pipe is expanded.

Here, the pin manufacturing step of manufacturing the turn pin in the form of a spiral prior to the arrangement step; And further comprising:

Here, after the bending step, the fixing step of coupling the fixing bracket to the fluid pipe to maintain the bent and arranged state of the fluid pipe; And further comprising:

As described above, in the fin-type heat exchanger according to the present invention and the manufacturing method thereof, the spiral turn pin is wound tightly in the fluid pipe, and the spiral groove is expanded in the fluid pipe, thereby increasing the contact area between the working fluid and the fluid pipe. In this way, heat exchange performance can be improved.

In addition, the present invention by expanding the inside of the fluid pipe, it is possible to improve the adhesion between the fluid pipe and the turn pin, and facilitate the formation of the spiral groove portion.

In addition, the present invention can further improve the heat exchange performance through the detailed structure of the turn pin.

In addition, the present invention can remove the oil remaining in the interior of the fluid pipe during expansion of the fluid pipe, thereby preventing or suppressing the mixing of the working fluid and the oil.

In addition, the present invention can be produced by bending one fluid pipe is formed long to remove the connection portion of the fluid pipe in the heat exchanger, it is possible to smooth the flow of the working fluid.

In addition, the present invention can eliminate the welding work according to the connection of the fluid pipe, it is possible to reduce the manufacturing labor of the heat exchanger.

In addition, the present invention further comprises a fixing bracket, it is possible to maintain a stable state of the fluid pipe bent, heat exchange can be made stable between the fluid pipe.

1 is a perspective view showing a fin heat exchanger according to an embodiment of the present invention;
Figure 2 is a cross-sectional view showing a coupling state of the turn fin in the fin-type heat exchanger according to an embodiment of the present invention,
Figure 3 is a side view showing a coupling state of the fixing bracket in the fin-type heat exchanger according to an embodiment of the present invention,
Figure 4 is a side view showing a coupling state of the fixing bracket in the fin-type heat exchanger according to another embodiment of the present invention,
5 is a flowchart illustrating a manufacturing method of a fin type heat exchanger according to an embodiment of the present invention;
Figure 6 is an exploded view showing the arrangement of the fluid pipe and the turn pin in the arrangement step in Figure 5,
7 is a coupling diagram of FIG. 6,
8 and 9 are views showing the bending process of the fluid pipe coupled to the turn pin in FIG.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a fin heat exchanger and a method for manufacturing the same according to the present invention. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view showing a fin heat exchanger according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a coupling state of the turn fin in the fin heat exchanger according to an embodiment of the present invention.

1 and 2, the fin-type heat exchanger according to an embodiment of the present invention includes a fluid pipe 10 and the turn fin 20.

The fluid pipe 10 has a working fluid there through. The fluid pipe 10 is formed by bending one hollow tube that is formed in multiple stages, and in one embodiment of the present invention, one fluid pipe 10 is formed by being bent in two rows and five stages.

However, the structure of the fluid pipe 10 is not limited thereto, but may be formed by being bent in multiple stages in one row, or may be formed by being bent in multiple stages in two or more rows.

The fluid pipe 10 may include a straight section 11 and a curved section 12.

The straight sections 11 are spaced apart from each other and the turn pin 20 is wound. The straight section 11 is a section in which the turn pin 20 is wound and adhered in one fluid pipe 10. In the straight section 11, the fluid pipes 10 are arranged substantially parallel to each other.

The bending section 12 is formed by bending the straight sections 11 spaced apart from each other to communicate with each other. The bending section 12 is a section which is bent in one fluid pipe 10 to communicate two straight sections 11 with each other. The turn pin 20 may also be wound around the bending section 12.

The fluid pipe 10 may be made of aluminum.

The turn pin 20 is wound on the fluid pipe 10 in the form of a spiral and is in close contact. The turn pin 20 may be in close contact with the fluid pipe 10 by expanding the inside of the fluid pipe 10.

The turn pin 20 may include an adhesive pin part 21 and a heat dissipation fin part 22.

The contact pin part 21 is wound in a spiral form on the fluid pipe 10 and is in close contact with the fluid pipe 10. The heat dissipation fin part 22 is formed to extend from the close contact fin part 21 to protrude from the fluid pipe 10.

Here, the winding pitch p of the turn pin 20 refers to an interval between the close contact fin portions 21 or an interval between the heat dissipation fin portions 22 when the turn pin 20 is wound on the fluid pipe 10. The protruding angle a of the turn pin 20 refers to an angle formed by the fluid pipe 10 and the heat dissipation fin part 22 when the turn pin 20 is formed in close contact with the fluid pipe 10.

The winding pitch p and the protruding angle a are determined in consideration of the heat exchange performance of the heat exchanger when the turn fin 20 is manufactured.

In addition, the adhesion width of the close contact fin portion 21 in close contact with the fluid pipe 10 and the protrusion width of the heat radiation fin part 22 protruding from the fluid pipe 10 are also determined in consideration of the heat exchange performance of the heat exchanger.

The turn pin 20 may be made of a metal material having high heat transfer efficiency.

Here, the spiral groove 15 of the spiral shape is formed in the fluid pipe 10.

The spiral groove 15 is formed in the same direction as the winding direction of the turn pin 20 corresponding to the winding position of the turn pin 20 wound on the fluid pipe 10. The spiral groove 15 is recessed between the turn pins 20 wound around the fluid pipe 10 in the fluid pipe 10.

The spiral groove 15 may be formed by extending the inside of the fluid pipe 10 in which the turn pin 20 is wound. When the inside of the fluid pipe 10 is extended to form the spiral groove 15, the adhesion between the fluid pipe 10 and the turn pin 20 may be improved. In addition, when the spiral groove 15 is formed, the turn pin 20 may be stably fixed in the fluid pipe 10.

Spiral groove 15 may be formed through the pipe expansion member (40).

The pipe expansion member 40 extends the diameter of the fluid pipe 10 when passing through the inside of the fluid pipe 10. Here, one end of the passage expansion member 40 is formed with an expansion ball portion 41 that can expand the inside of the fluid pipe 10, the other end of the passage expansion member 40 is formed with a locking protrusion 42 Can be. The locking protrusion 42 is coupled to a pulling device (not shown) that is separately provided to facilitate movement of the pipeline expansion member 40.

As the spiral groove 15 is formed in the fluid pipe 10 in the present invention, when the working fluid passes through the inside of the fluid pipe 10, the contact area between the working fluid and the fluid pipe 10 is increased, This improves heat exchange performance.

Fin-type heat exchanger according to an embodiment of the present invention further includes a fixing bracket (30).

Figure 3 is a side view showing a coupling state of the fixing bracket in the fin heat exchanger according to an embodiment of the present invention, Figure 4 is a side view showing a coupling state of the fixing bracket in the fin heat exchanger according to another embodiment of the present invention. to be.

1 to 4, the fixing bracket 30 is coupled to the fluid pipe 10 so that the fluid pipe 10 is bent and arranged. A straight section 11 or a curved section 12 is coupled to the fixed bracket 30 in order to maintain the spaced apart state of the straight section 11 in the fluid pipe 10.

The fixing bracket 30 includes a fixing part 31 and a support part 32.

The fixed part 31 is coupled to the straight section 11 of the fluid pipe 10 or the bending section 12 of the fluid pipe 10 to maintain a state in which the fluid pipe 10 is bent and arranged. In other words, the fixing part 31 can maintain the spaced arrangement state of the linear section 11.

A fixing hole 35 may be formed in the fixing part 31. The fixing hole part 35 is formed through the fixing part 31 so that the bending section 12 of the fluid pipe 10 is inserted and supported. On the other hand, in the fixing hole 35, the fluid pipe 10 including the bending section 12 or the bending section 12 may be inserted and supported.

The support part 32 extends from the fixing part 31 to fix the fixing part 31 to the installation place. The support part 32 may be fixed to the installation place through a separate fastening member, thereby fixing the fixing part 31 to the installation place.

Each turn pin 20 here represents a virtual columnar shape with the edges inscribed. Then, the turn pin 20 wound around the straight section 11 may be circumscribed with the turn pin 20 wound around another adjacent straight section 11.

For example, as shown in FIG. 3, when the straight sections 11 are arranged to intersect in the vertical or horizontal direction, the turn pins 20 wound in the respective straight sections 11 are other straight lines adjacent in the vertical or horizontal direction. It is circumscribed with the turn pin 20 wound in the section (11).

In addition, as shown in FIG. 4, when the straight sections 11 are arranged to intersect in a zigzag form, the turn pins 20 wound on the respective straight sections 11 are turned pins wound on all adjacent straight sections 11. Outside of (20).

When the turn pins 20 adjacent to each other are circumscribed, heat exchange performance may be improved compared to a state in which the turn pins 20 are spaced apart from each other.

Hereinafter, a method of manufacturing a fin heat exchanger according to an embodiment of the present invention will be described.

5 is a flow chart illustrating a manufacturing method of a fin heat exchanger according to an embodiment of the present invention, Figure 6 is an exploded view showing the arrangement of the fluid pipe and the turn pin in the arrangement step in Figure 5, Figure 7 8 and 9 are views illustrating a bending process of the fluid pipe to which the turn pin is coupled in FIG. 7.

1 and 2 and 5 to 9, the manufacturing method of the fin-type heat exchanger according to an embodiment of the present invention comprises the arrangement step (S2), expansion step (S3), bending step (S4) Include.

In the arranging step S2, the turn pins are arranged in a spiral form around the fluid pipe 10. The working fluid passes through the inside of the fluid pipe 10.

For example, as shown in FIGS. 5 and 6, the fluid pipe 10 passes through the center of the turn pin 20, and the channel expansion member 40 passes through the inside of the fluid pipe 10.

In this case, the turn pins 20 may be spaced apart from each other in one fluid pipe 10. Here, the part where the turn pin 20 is disposed forms a straight section 11, and the part where the turn pin 20 is not disposed forms a bending section 12.

In the arrangement step S2, the turn pin 20 may be directly wound around the fluid pipe 10.

Expansion step (S3) after the arrangement step (S2) is in close contact with the fluid pipe 10 and the turn pin 20, as shown in Figure 2 spiral groove portion of the spiral shape in the interior of the fluid pipe 10 (15) ).

For example, in the expanding step S3, the inside of the fluid pipe 10 may be expanded. As the inside of the fluid pipe 10 is expanded, the turn pin 20 wound around the fluid pipe 10 may be in close contact with the fluid pipe 10. In addition, a spiral groove 15 having a spiral shape may be formed in the fluid pipe 10.

In particular, the passage expansion member 40 extends the diameter of the fluid pipe 10 when passing through the inside of the fluid pipe 10. Here, one end of the passage expansion member 40 is formed with an expansion ball portion 41 that can expand the inside of the fluid pipe 10, the other end of the passage expansion member 40 is formed with a locking protrusion 42 Can be. The locking protrusion 42 is coupled to a pulling device (not shown) that is separately provided to facilitate movement of the pipeline expansion member 40.

Then, as the pulling device (not shown) is operated, the pipe extension member 40 passes through the inside of the fluid pipe 10. At this time, the expansion ball portion 41 extends the inside of the fluid pipe 10 while passing through the inside of the fluid pipe 10.

In particular, by expanding the inside of the fluid pipe 10 through the pipe expansion member 40, it is possible to remove or reduce the oil remaining in the fluid pipe 10, the fluid pipe 10 and the turn pin 20 Can improve the adhesion. In addition, a spiral groove 15 having a spiral shape may be easily formed in the fluid pipe 10.

The bending step S4 passes through the expansion step S3 and then the fluid pipe 10 is bent in multiple stages. The bending step (S4) may be bent in multiple stages, one fluid pipe 10 wound around the turn pin 20, as shown in FIGS. 8 and 9.

In the bending step (S4) by bending sequentially from both ends toward the center in one fluid pipe 10, so as not to be limited by the surrounding space when the fluid pipe 10 is bent.

And as shown in Figure 9 by bending the five stages in a zigzag form along the longitudinal direction of the fluid pipe 10, in the center portion by bending to face both sides symmetrical, it is possible to manufacture a heat exchanger of two rows and five stages. .

Method for manufacturing a fin-type heat exchanger according to an embodiment of the present invention may further include a fin manufacturing step (S1). The pin manufacturing step S1 manufactures the turn pin 20 in a spiral form prior to the arranging step S2. The turn pin 20 manufactured in the fin manufacturing step S1 may include a close contact fin part 21 and a heat dissipation fin part 22.

Method for manufacturing a fin-type heat exchanger according to an embodiment of the present invention may further comprise a fixing step (S5).

The fixing step S5 is coupled to the fixing bracket 30 to the fluid pipe 10 so that the fluid pipe 10 is bent and then arranged after the bending step S4. The fixing bracket 30 coupled in the fixing step S5 may include a fixing part 31 and a support part 32 on which the fixing hole 35 is formed.

According to the present invention, a spiral turn pin 20 is wound around the fluid pipe 10 in close contact with each other, and the spiral groove 15 is formed inside the fluid pipe 10 to expand the working fluid and the fluid pipe 10. It is possible to increase the contact area, thereby improving heat exchange performance.

In addition, according to the present invention, by expanding the inside of the fluid pipe 10, the adhesion between the fluid pipe 10 and the turn pin 20 can be improved, and the formation of the spiral groove 15 can be facilitated.

In addition, the present invention can be produced by bending one of the fluid pipe 10 is formed long to remove the connection portion of the fluid pipe 10 in the heat exchanger, it is possible to smooth the flow of the working fluid.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill 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. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the claims.

10: fluid piping 11: straight section
12: bending section 15: spiral groove
20: turn pin 21: contact pin portion
22: heat radiation fin portion 30: fixing bracket
31: fixing part 32: supporting part
35: fixing hole 40: pipeline expansion member
41: expansion ball portion 42: locking projections
a: protrusion angle S1: pin manufacturing step
S2: Arrangement stage S3: Expansion stage
S4: bending step S5: fixing step

Claims (10)

A fluid pipe bent in multiple stages so that the working fluid passes through the inside; And
A turn pin wound on the fluid pipe in a spiral form to be in close contact with the fluid pipe; / RTI >
The fluid pipe,
And a spiral groove portion having a spiral shape identical to a winding direction of the turn pin is formed corresponding to the winding position of the turn pin.
The method of claim 1,
The fluid pipe is a fin-type heat exchanger, characterized in that it comprises a straight section which is spaced apart from each other and the turn section is wound, and the curved section is formed so that the straight section is in communication with each other.
The method of claim 1,
The turn fin, the heat exchanger fins, characterized in that it comprises a close contact with the fluid pipe is wound in a spiral form, and the heat radiation fin portion extending from the contact pin to protrude from the fluid pipe.
4. The method according to any one of claims 1 to 3,
The spiral groove portion, the heat exchanger, characterized in that the inside of the fluid pipe is formed so that the turn pin is in close contact.
4. The method according to any one of claims 1 to 3,
A fixing bracket coupled to the fluid pipe such that the fluid pipe is bent and maintained in an arranged state; Fin-type heat exchanger further comprising a.
An arranging step of arranging a spiral turnpin around a fluid pipe through which the working fluid passes;
After the arranging step, expanding the fluid pipe and the turn pin in close contact with each other to form a spiral groove in a spiral shape in the fluid pipe; And
After the expansion step, bending step of bending the fluid pipe in multiple stages; Fin-type heat exchanger manufacturing method comprising a.
The method according to claim 6,
The expanding step, the manufacturing method of the fin-type heat exchanger, characterized in that to expand the inside of the fluid pipe to form the spiral groove portion.
The method of claim 7, wherein
The expanding step, the fin heat exchanger manufacturing method characterized in that for passing through the pipe line expansion member inside the fluid pipe so that the inside of the fluid pipe is expanded.
9. The method according to any one of claims 6 to 8,
A pin manufacturing step of manufacturing the turn pin in a spiral form prior to the arranging step; Fin-type heat exchanger manufacturing method characterized in that it further comprises.
9. The method according to any one of claims 6 to 8,
A fixing step of coupling the fixing bracket to the fluid pipe so as to maintain the bent and arranged state of the fluid pipe after the bending step; Fin-type heat exchanger manufacturing method characterized in that it further comprises.

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