KR20160006026A

KR20160006026A - Heat exchanger device and a manufacturing

Info

Publication number: KR20160006026A
Application number: KR1020140085339A
Authority: KR
Inventors: 박효문
Original assignee: (주)유한산업
Priority date: 2014-07-08
Filing date: 2014-07-08
Publication date: 2016-01-18

Abstract

The present invention is provided to have a clean radiation surface, enable fluid paths to have a constant thickness, and double the productivity of products by forming the fluid paths, formed by a heat exchange pipe and radiation fins when forming a heat exchanger, in one united body by an injection molding method using synthetic resin materials. The heat exchanger with the synthetic resin materials and manufacturing equipment thereof are provided in the present invention. The heat exchanger (1): has multiple radiation fins (2) and fluid paths (3) integrally formed by injecting and molding the synthetic resin materials by multiple slide cores (6) interposed between upper and lower molds (4, 5) and multiple cavities (4a, 4b, 5a, 5b); and has synthetic resin material end caps (12) which are fused and fixated on both end parts of the fluid paths (3) and the radiation fins (2). The present invention as above is able to provide the heat exchanger of good quality, capable of: doubling productivity by molding the multiple fluid paths and the radiation fins surrounding the same simultaneously by an injection molding process; enabling the molded end part of the product to be molded cleanly without being bent by the slide cores, where the radiation surface vibrates, and clips for stably supporting the slide cores in the mold; and enabling the fluid paths to be produced to have a constant thickness.

Description

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

The present invention relates to a heat exchanger and an apparatus for manufacturing the same, and more particularly, to a heat exchanger and a manufacturing apparatus thereof, and more particularly, to a heat exchanger having a heat radiating fin and a heat exchanger pipe, Product productivity and so on.

The inventor of the present invention has found that a radiator, an oil cooler, a condenser for an air conditioner and an air conditioner, and an auxiliary water bottle constituting a heat exchanger of the present invention are made of a split type body by using a synthetic resin material (heat and vibration) , Heat exchange efficiency is improved and heat dissipation is maximized, and a manufacturing convenience is improved.

1 to 3, the main body of the heat exchanger 1 is divided into upper and lower bodies 8 and 9 by using a synthetic resin material, The second main body 8b of the upper main body 8 and the first main body 9a of the lower main body 9 are divided into a radiator 2, an oil cooler 3 and a condenser 4, The heat radiating fins 7 are assembled to the heat exchanging pipes 6 at the front and rear two or more stages and then the support body 19 is injected and molded under the second main body 8b of the upper main body 8 with a synthetic resin material separately And the supporter-cap 18 is inserted into the fluid passage 11 of the heat exchange pipe 6 and inserted into the injection molding machine so as to be coupled to the heat exchange pipe 6, A synthetic resin material is filled between the main body 8b and the support main body 19 so as to be integrally formed with the heat exchange pipe 6, The first main body 8a and the second main body 9b are welded and fixed to the lower part of the first main body 9a of the lower main body 9 and the radiator 2 The oil cooler 3 and the upper inlet 16 formed in the condenser 4 are communicated with the fluid passage 11 and the lower outlet 17 of the heat exchange pipe 6 .

Such a heat exchanger is manufactured by using a lightweight synthetic resin material such as a radiator, an oil cooler, an auxiliary water bottle, and a cooling / heating air conditioner which are used in automobiles, tractors, excavators, forklifts and the like, The heat radiating fins can be assembled firmly by heat fusion or vibration welding or by insert injection molding and the radiating fins can be firmly assembled to the radiating fin coupling portion of the main body The product defect rate is minimized, post-processing is not required, and the heat exchange efficiency can be maximized.

In addition, when manufacturing a heat exchanger, it is possible to reduce carbon emissions and lead to a reduction in water pollution since lead is not used, and it is an invention that can greatly contribute to lightening of products.

However, in the case of the above-mentioned prior art, the upper main body and the lower main body are separately injected, the radiating fins are assembled to the heat exchanging pipe, and then the supporting body formed by the synthetic resin material is inserted into the heat exchanging pipe. In this method, the synthetic resin is protruded when the upper main body and the lower main body made of a synthetic resin material are fused, and the fused surfaces are not cleanly formed, and the fluid passages are formed in only one stage, In the case of molding, the manufacturing process was very troublesome, which resulted in a number of problems such as a decrease in productivity and a cost increase.

Korean Patent No. 10-1385266

It is an object of the present invention to provide a heat exchanger made of a synthetic resin material in which a heat radiating fin and a fluid passage constituting a heat exchanger are made of a synthetic resin material and are clean without a portion where the molding surface protrudes outwardly by an injection molding method, To provide a heat exchanger of good quality with excellent heat dissipation effect, and also to provide a heat exchanger having a productivity multiplication effect and the like.

It is another object of the present invention to provide a heat exchanger capable of forming a plurality of fluid passages formed in a heat exchanger by one molding operation in one, or more than one, multiple stages, and a manufacturing apparatus thereof.

The heat exchanger and its manufacturing apparatus provided in the present invention are characterized by providing the following solution means.

That is, the present invention provides a heat exchanger composed of a synthetic resin material, comprising a plurality of radiating fins integrally formed by injection molding a synthetic resin material by a plurality of slide cores interposed between an upper / lower mold and a plurality of cavities, A plurality of fluid passages formed between the fluid passages;

And a synthetic resin end cap is welded and fixed to both ends of the radiating fin and the fluid passage.

Further, in a heat exchanger manufacturing apparatus comprising a synthetic resin material,

An upper / lower mold having a plurality of radiating fins constituting a heat exchanger and a plurality of cavities through which a synthetic resin material is injected to form a fluid passage;

A plurality of slide cores assembled into a plurality of cavities formed for forming one or more fluid passages in the upper and lower molds so as to be assembled and slidable;

One end of the slide core is connected to a fixing bracket and a connection bracket connected to the spring,

The opposite end of the slide core is connected to and disconnected from the pin through a coupling hole corresponding to the connection bracket connected to the separation bracket and the spring;

A connection rod fixed to the separation bracket is connected to and separated from the fixing bracket via a coupling hole,

And the slider core is vibrated during solidification before ejecting the molded heat exchanger from the upper / lower molds.

Further, the slide core is characterized in that it can be hooked on the cavity by using a plurality of clips so as not to be bent by the injection pressure during injection molding.

The heat exchanger and the apparatus for manufacturing the same of the present invention can simultaneously mold one or more fluid passages and the heat dissipating fins surrounding the fluid passages by one injection molding process to double the productivity of the product, The slide core which oscillates on the heat radiation surface to be formed and the clip which stably supports the slide core in the mold can be molded without any bending and the product end can be cleanly formed and the thickness of the fluid passage molding can be constantly produced It is possible to provide a high-quality heat exchanger.

1 is a cross-sectional view of a partially decomposed state of a conventional art resin heat exchanger
2 is a view showing a molding process showing an embodiment of a conventional synthetic resin material heat exchanger
3 is a view showing a molding process showing an embodiment of a conventional synthetic resin re-
4 is a perspective view of a heat exchanger according to the present invention,
Fig. 5 is a schematic view of a manufacturing apparatus for forming a heat exchanger according to the present invention
6 is a perspective view of a clip that may be additionally installed in a manufacturing apparatus for forming a heat exchanger according to the present invention;
7 is a plan view showing a state where the clip is coupled to the lower mold in the apparatus for manufacturing a heat exchanger provided in the present invention
FIG. 7A is an explanatory diagram of an open state of an upper / lower mold in a state where a clip is coupled to a lower mold in the apparatus for manufacturing a heat exchanger provided in the present invention
8 is a plan view showing another embodiment of a clip that can be additionally installed in a manufacturing apparatus for forming a heat exchanger according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. For reference, the reference numerals used in FIGS. 1 through 3 and the reference numerals used in FIGS. 4 through 8 showing a preferred embodiment of the present invention are used differently,

It is to be noted that, in the drawings, the same components or parts have the same reference numerals as much as possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

As used herein, the terms "substantially", "substantially", and the like are used herein to refer to a value in or near the numerical value when presenting manufacturing and material tolerances inherent in the meanings mentioned, Absolute numbers are used to prevent unauthorized exploitation by unauthorized intruders of the mentioned disclosure.

4 is a perspective view showing a preferred embodiment of the heat exchanger 1 provided in the present invention.

The heat exchanger (1) of the present invention allows the one or more fluid passages (3) formed by the heat dissipating fin (2) and the conventional heat exchanging pipe to be integrally molded at the time of injection molding, and the left and right end caps the end cap 12 is manufactured by injection molding after the heat exchanger 1 is injection molded and fixed to the left and right of the heat exchanger 1 by heat or vibration welding so that the heat exchanger 1 is finally completed .

The manufacturing method using the heat exchanger 1 and the manufacturing apparatus greatly contributes to forming the entire heat exchanger 1 into a synthetic resin material and the heat dissipation fin 2 and the fluid passageway 3 are integrally formed, And furthermore, the formed radiating surface is clean, and the thickness of the formed portion is constantly formed, thereby maximizing the heat radiating effect, so that it is possible to produce a better quality product than the conventional synthetic resin re-heat exchanger (1).

FIG. 5 is a plan view of the upper die 4 opened and the lower die 5 viewed from above, according to the present invention.

The spaces for filling the synthetic resin material injected for molding the radiating fins 2 and the fluid passages 3 as shown in FIG. 4, that is, the cavities 4a and 5a, are formed in the upper and lower molds 4 and 5, And a plurality of slide cores 6 for forming the fluid passages 3 together with the cavities 4b and 5b for forming the inner walls of the fluid passages 3 are formed in the upper and lower molds 4 5 and the cavities 4b, 5b of the first and second cavities 5, 5, respectively.

That is, the slide core 6 has the connection brackets 7a and 8a to which the slide core 6 can be connected to the one fixing bracket 7 and the opposite separation bracket 8, respectively, with the spring 9 having a high elastic modulus, And one end of the slide core 6 is fixed to the one connection bracket 7a while the other end of the slide core 6 is connected to the opposite connection bracket 8a by the pins 10, The engagement holes 6a and 8b are formed on the corresponding surfaces of the slide cores 6 and the connection brackets 8a so that they can be separated from each other so that they can be mutually connected when the injection molding is carried out, .

The separating bracket 8 on the opposite side of the fixing bracket 7 is connected to the connecting rod 13 at the outer side of the upper and lower molds 4 and 5 so that the slider core 6 is inserted into the molds 4 and 5 The coupling bracket 7 and the coupling rod 13 can be connected to and separated from the coupling holes 7b and 13a formed by the fixing bracket 7 and the coupling rod 13 with the pin 10a.

The spring 9 can be used as various springs such as a leaf spring as well as a coil spring as shown in the drawing.

The slide core 6 is installed between the cavities 4b and 5b of the upper and lower molds 4 and 5 when the fluid passage 3 is formed and when the synthetic resin is solidified after the synthetic resin is injected and filled, The slider core 6 is prevented from being bent by the injection pressure, and at the same time, the fluid passages 3 to be molded are uniformly deformed by the vibration, So that the curvature of the fluid passage 3 and the defective product due to the thickness unevenness are prevented in advance.

Since a vibration device for imparting vibration to the slide core 6 in the left and right direction can be provided by a generally used vibration device, the illustration and description of the device and operation for imparting vibration to the slide core 6 It is assumed to be omitted key.

6 is a perspective view of a clip 11 which can be installed in a production apparatus for forming a heat exchanger 1 of the present invention.

The clip 11 is provided to prevent the slide core 6 from being bent by the injection pressure when the slide core 6 is mounted on the upper and lower molds 4 and 5,

This allows the engagement groove 11a to be fitted into the slide core 6 and the engagement step 11c to have the outwardly projecting portion 11b on both sides of the fitting groove 11a. The locking protrusions 11d protruding in a hemispherical shape or the like outside the protrusions 11b can be hooked to the molding portions of the radiating fins 2 of the upper and lower molds 4 and 5, respectively. When the clip 11 is manufactured without the stop 11d, the clip 11 is pushed into the gap between the cavities 4b and 5b for forming the fluid passages 3 of the upper and lower molds 4 and 5 You can do it.

FIG. 7 is a plan view showing a state where the clip 11 is coupled to the lower mold 5. FIG. 7A is an open state excerpt of the upper / lower mold in a state in which the clip 11 is engaged.

That is, the clip 11 has a fitting groove 11a in one or more slide cores 6 in a state where the slide core 6 is coupled to the cavities 4b, 5b for forming the fluid passages 3, And they are coupled at equal intervals or more at predetermined intervals according to the length of the fluid passages 3 of the heat exchanger 1 to be formed.

At this time, the left and right locking projections 11d of the clip 11 are hooked on the molding portions of the heat radiation fins 2 of the upper and lower molds 4 and 5 as described in the foregoing description.

By inserting the clip 11 into the slide core 6 as described above, it is possible to solve the problem that the slide core 6 can be bent by the injection pressure when the heat exchanger 1 is injection-molded.

That is, the clip 11 keeps the gap between the cavities 4b, 5b and the slide core 6 at a constant interval between the cavities 4b, 5b for forming the fluid passages 3, ) The molding thickness of the synthetic resin material made for the molding can be formed uniformly.

The clip 11 may be variously modified by a clip 11 made of a polygonal rod having a trapezoidal shape on one side as shown in the I-shaped or plan view of FIG. 8 as well as the generally H-shaped as shown in FIGS. .

When the clip 11 is formed of a polygonal rod, a separate clip 11 is coupled to both sides of the slide core 6 as shown in FIG. 8 to solve the problem that the slide core 6 is bent during injection molding.

According to the present invention as described above, it is possible to manufacture a high quality synthetic resin material heat exchanger (1) having excellent heat radiation performance and a clean heat radiation surface through the following manufacturing process.

The upper and lower molds 4 and 5 are opened to provide a plurality of slide cores 6 connected to the fixing bracket 7 by the spring 9 and the connection bracket 7a in the cavities 4b and 5b.

A spring 9 and a connection bracket 8a are provided on the separation bracket 9 on the opposite side of the fixing bracket 7 of the slide core 6 to the coupling hole 6a of the slide core 6 and the connection bracket 8a And fixed to the pin 10 through the engagement hole 8b. The ends of the connecting rods 13 connected to the separating bracket 8 are fitted to the connecting brackets 7 and the connection rods 13 The pin 10a is engaged through the corresponding formed hole 13a so that the fixing bracket 7 and the separation bracket 8 are connected to and supported by the slide core 6 on both sides. The slide core 6 receives vibrations in the cavities 4b and 5b of the upper and lower molds 4 and 5 by the spring 9 installed between the upper and lower molds 4 and 5 so that the slide core 6 vibrates up and down when viewed in FIG.

A plurality of the clips 11 are coupled to the slide core 6 at predetermined intervals and the number of the clips 11 is adjusted to a proper length according to the length of the slide core 6. The clip 11 is used when there is only one fluid passage 3, and is not used when the fluid passage 3 is formed into one or more fluid passages 3.

The molten synthetic resin material is injected onto the cavities 4a, 5a, 4b and 5b to fill the upper and lower molds 4 and 5, and the gate to which the synthetic resin material molten resin is injected, So that injection can be performed while preventing warpage of the slide core 6. The molten resin injected during the injection molding is excellent in heat exchange efficiency by melting a synthetic resin material used for injection molding rather than a synthetic resin material used for extrusion.

After the injection molding is performed, the synthetic resin material is subjected to longitudinal vibration to the slide core 6 at the time of solidification to prevent the slider core 6 from being bent by the injection pressure, and by the synthetic resin material flowing through the cavities 4b and 5b The thickness of the synthetic resin is kept constant during molding of the fluid passage (3), thereby preventing curvature.

When the heat exchanger 1 is completed, the upper and lower molds 4 and 5 are opened and the pin 10 and the connecting rod 13 connecting the slider core 6 and the connecting bracket 8a are fixed The pins 10a connecting the brackets 7 are respectively separated and the slider core 6 is slid out and the heat exchanger 1 after the molding is completed is ejected from the upper and lower molds 4 and 5, When the end cap 12 is fixed to both ends of the base 1 by heat or vibration, the heat radiation fins 2, the fluid passages 3 and the end caps 12 are integrally formed with the heat exchanger 1 ).

A heat exchanger (1) and a manufacturing apparatus thereof according to the present invention are characterized in that a plurality of one or more fluid passages (3) formed in a heat exchanger (1) are connected to upper and lower molds (4,5) It is possible to integrally mold together with the radiating fin 2 by using the core 6,

The slider core 6 is inserted into the cavities 4b and 5b by using a plurality of clips 11 when only one fluid passage 3 is formed or if the slider core 6 is likely to be bent, So that the fluid passages 3 can be formed without being bent on the heat exchanger 1, so that a high quality heat exchanger 1 made of a synthetic resin material can be manufactured and supplied.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be clear to those who have knowledge of.

The present invention relates to a heat exchanger and a method of manufacturing the same, and more particularly, to a heat exchanger, a heat exchanger, a heat exchanger, a fluid passage, 7b, 8b: engaging hole 9: spring 10, 10a: pin 11: clip 11a: fitting groove 11b: projecting portion 11c: engaging step 11d: engaging hole portion 12: end cap 13: connecting rod 13a:

Claims

A heat exchanger (1) made of a synthetic resin material;
The heat exchanger 1 is integrally formed by injection molding a synthetic resin material by a plurality of slide cores 6 interposed between upper and lower molds 4 and 5 and a plurality of cavities 4a, 4b, 5a and 5b A plurality of fluid passages (3) integrally formed of a synthetic resin material between the plurality of radiating fins (2);
Wherein a synthetic resin material end cap (12) is welded and fixed to both ends of a heat exchanger (1) in which the heat radiation fins (2) and the fluid passages (3) are integrally formed.

1. A heat exchanger (1) manufacturing apparatus comprising a synthetic resin material, the apparatus comprising:
A plurality of heat dissipating fins 2 constituting the heat exchanger 1 and upper and lower molds 4 and 5 having a plurality of cavities 4a, 4b, 5a and 5b through which a synthetic resin material is injected for molding the fluid passages 3, 5);
A plurality of slide cores (6) assembled to a plurality of cavities (4b, 5b) formed for forming a plurality of fluid passages (3) in the upper and lower molds (4, 5)
One end of the slide core 6 is connected to a fixing bracket 7 and a connection bracket 7a connected to the spring 9,
The opposite end of the slide core 6 is connected to and disconnected from the pin 10 through the connection bracket 8a and the coupling holes 6a and 8b connected to the separation bracket 8 and the spring 9;
The connecting rod 13 fixed to the separating bracket 8 is connected and separated by the pin 10a through the fixing bracket 7 and the engaging holes 10a and 13a,
Wherein the slider core (6) can vibrate and solidify during the solidification process before ejecting the molded heat exchanger (1) from the upper / lower molds (4, 5).

3. The method of claim 2,
Characterized in that the slide core (6) can be hooked on the cavities (4b, 5b) using a plurality of clips (11) so as not to be bent by injection pressure during injection molding.