JP5448596B2 - Resin heat exchanger - Google Patents

Description

The present invention, or by heating the process fluid in the semiconductor and liquid crystal manufacturing process, a method for producing a resin-made heat exchanger or cooling.

Conventionally, for example, temperature control of a process fluid in a manufacturing process of a fluororesin semiconductor or a liquid crystal has been important, and many heat exchangers have been proposed.
For example, the resin heat exchanger of the following patent document 1 is one of them.

In the resin heat exchanger, a fluororesin tube in which a large number are bundled in a cylindrical shape and bound in a honeycomb shape is disposed inside a casing through which a process fluid flows in and out.
In the resin heat exchanger configured as described above, a fluid heat medium functioning as a refrigerant body or a heat medium is caused to flow into and out of the casing, and a fluororesin tube having a process fluid disposed inside the casing is brought into conduction so that the inside of the casing It is said that the process fluid can be controlled to a desired temperature by exchanging heat with the fluid heat medium.

  However, since the resin heat exchanger rapidly exchanges heat with a fluid heat medium flowing into and out of the casing, a large amount of process fluid that conducts through the inside of the fluororesin tube bundled in a honeycomb shape has a fine temperature. It was not suitable for control.

  Therefore, for example, the process fluid temperature control is required to be highly accurate due to the complexity of the structure to be manufactured. However, in the above resin heat exchanger, the temperature of the process fluid passing through the fluororesin tube is highly accurate. It was difficult to control.

JP 2001-289574 A

Therefore, in the present invention, the high efficiency and high precision, and it is an object of the process fluid to provide a method of manufacturing a tree fat-made heat exchanger Ru can temperature control.

This invention, a process fluid to a method for producing a resin-made heat exchanger controlling the temperature to the desired temperature by heat exchange with a fluid-like heat medium, and the process fluid tube for resin of the process fluid to conduct the The process fluid tube disposed in parallel with the fusion mold, and the resin fluid heat medium tube for conducting the fluid heat medium in close contact with each other with the outer surfaces in close contact with each other. Heat exchange in which the fluid heat medium tube is heated together with the fusion mold, and the close contact portions where the outer surfaces are in close contact with each other are integrated by fusion so that the process fluid and the fluid heat medium exchange heat. And forming a separation jig for separating the process fluid tube and the fluid heat medium tube arranged in parallel outside the fusion mold before the heating, Process Wherein the fluid tube and the fluid-like heat medium tubes to form a tube spaced edges spaced apart from each other in the longitudinal direction on both sides of the heat exchanger.

  According to the present invention, it is possible to reliably manufacture a resin heat exchanger capable of exchanging heat between a process fluid and a fluid heat medium with high efficiency and controlling the temperature of the process fluid with high accuracy.

  Specifically, the heat exchange part is formed by heating together the fusion molds arranged in parallel with the outer surfaces of the process fluid tube and the fluid heat medium tube being in close contact with each other, thereby forming the contact part reliably. be able to.

  In addition, a separation jig for separating the process fluid tube and the fluid heat medium tube arranged in parallel to each other outside the fusion mold is attached before the heating, and the process fluid tube And a process fluid tube and a fluid heat medium tube arranged in parallel so as to be in close contact with each other by forming tube spacing portions on which the fluid heat medium tubes are spaced apart from each other in both longitudinal directions of the heat exchange portion. The tube can be securely formed by holding the shape in a state of being spread in the width direction and the longitudinal direction by the spacing jig, and the tube for the process fluid and the fluid heat medium tube are spread in the width direction and the longitudinal direction. Process fluid and fluid heat medium are supplied to each of the process fluid tube and the fluid heat medium tube by the separation portion. It can be the tube spacing portion can be reliably connected to the supply pipe or delivery tube to deliver, to reliably and easily formed.

  The process fluid to be temperature-controlled and the fluid heat medium that functions as a refrigerant body or a heat medium can be a liquid, gel, or gas fluid.
  The process fluid tube and the fluid heat medium tube can be a tube made of the same resin material or a tube made of a different resin material, and a tube formed in the same shape or a tube formed in a different shape. It can be.

The present invention, in high efficiency and high accuracy, the process fluid can provide a method for producing dendritic fat-made heat exchanger Ru can temperature control.

The perspective view of a resin heat exchanger. Explanatory drawing by sectional drawing about a resin heat exchanger. Explanatory drawing about the manufacturing method of a resin heat exchanger. Explanatory drawing about the manufacturing method of a resin heat exchanger. Explanatory drawing about the manufacturing method of a resin heat exchanger. Explanatory drawing about the manufacturing method of a resin heat exchanger. Explanatory drawing about the fusion die of a resin heat exchanger. Explanatory drawing by sectional drawing about the resin-made heat exchangers of another embodiment.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a perspective view of a resin heat exchanger 1, and FIG. 2 shows an explanatory view of the resin heat exchanger 1 by a cross-sectional view.

  The resin heat exchanger 1 is configured by bundling five process fluid tubes 10 and four liquid heat medium tubes 20 formed to have a predetermined length, and is formed in an intermediate portion in the longitudinal direction L. A certain heat exchange part 2 and tube separation parts 3 (3a, 3b) arranged on both sides in the longitudinal direction L of the heat exchange part 2 are configured.

  Specifically, as shown in FIG. 2A, which is a cross-sectional view of the heat exchanging unit 2, five process fluid tubes 10 arranged in parallel in close contact with the width direction W and in close contact with the width direction W in parallel. The four liquid heat medium tubes 20 arranged are closely arranged in the height direction H so as to be arranged between adjacent tubes, and are configured in a trapezoidal shape.

  The process fluid tube 10 and the liquid heat medium tube 20 are made of a modified PTFE resin having an outer diameter of 4 mm × an inner diameter of 2.5 mm, and are made of a fluororesin tube having appropriate deformability. However, the present invention is not limited to this, and a PTFE resin fluororesin tube may be used.

  In addition, the process fluid tube 10 is conducted and functions as the process fluid and the refrigerant body or the heating medium to be temperature controlled, and the liquid heat medium 20a that conducts the liquid heat medium tube 20 is a liquid fluid. It is not limited to this, It is good also as a gel-like or gaseous fluid.

  Further, as shown in FIG. 2B, the five process fluid tubes 10 and the four liquid heat medium tubes 20 are integrated by heat-sealing the close contact portions m to which the process fluid tubes 10 and the four liquid heat medium tubes 20 are in close contact.

  As shown in FIG. 1, the tube separation portions 3 (3a, 3b) on both sides in the longitudinal direction L of the heat exchanging portion 2 are separated from each other by a process fluid tube 10 and a liquid heat medium tube 20 at appropriate intervals. Thus, it is configured to spread in the height direction H and the width direction W.

  The resin heat exchanger 1 configured as described above has the process fluid tube 10 at the end of the process fluid tube 10 in the supply side tube separation portion 3a on the supply side of the process fluid 10a and the liquid heat medium 20a. A process fluid supply pipe (not shown) for supplying the process fluid 10a (FIG. 2) to be connected to the tube, and a process fluid tube in the delivery side tube separation portion 3b which is a side for delivering the process fluid 10a and the liquid heat medium 20a A process fluid delivery pipe (not shown) that receives delivery of the process fluid 10 a that has been conducted through the process fluid tube 10 is connected to the end of the process fluid 10.

  Similarly, a fluid heat medium supply pipe (not shown) that supplies the liquid heat medium 20a (FIG. 2) to be conducted to the liquid heat medium tube 20 to the end of the liquid heat medium tube 20 in the supply side tube separation portion 3a. ), And a fluid heat medium delivery pipe (not shown) that receives the liquid heat medium 20a conducted through the liquid heat medium tube 20 at the end of the liquid heat medium tube 20 at the delivery side tube separation portion 3b. Connect.

  Then, the process fluid 10a (FIG. 2) is supplied from the process fluid supply pipe and sent from the process fluid delivery pipe, and the liquid heat medium 20a is supplied from the fluid heat medium supply pipe and sent from the fluid heat medium delivery pipe. Thus, in the heat exchanging unit 2, heat exchange is performed between the process fluid 10 a that conducts the process fluid tube 10 and the liquid heat medium 20 a that conducts the liquid heat medium tube 20.

  Specifically, when the liquid heat medium 20a is a liquid heat medium having a temperature higher than that of the process fluid 10a, heat is transferred from the liquid heat medium 20a to the process fluid 10a via the process fluid tube 10 or the liquid heat medium tube 20. Therefore, the temperature of the process fluid 10a is improved. Conversely, when the liquid heat medium 20a is a liquid refrigerant having a temperature lower than that of the process fluid 10a, heat is transferred from the process fluid 10a to the liquid heat medium 20a via the process fluid tube 10 or the liquid heat medium tube 20. Therefore, the temperature of the process fluid 10a decreases.

  As described above, the resin heat exchanger 1 is configured to perform heat exchange between the process fluid 10a that conducts the process fluid tube 10 and the liquid heat medium 20a that conducts the liquid heat medium tube 20 with high efficiency. Heat exchange with a gradual change gradient can be realized, and the temperature of the process fluid 10a can be controlled with high accuracy.

  Specifically, in the heat exchanging section, a contact portion m between the resin process fluid tube 10 for conducting the process fluid 10a and the resin liquid heat medium tube 20 for conducting the liquid heat medium 20a is made of resin. Since the heat exchange section 2 of the heat exchanger 1 is integrally formed by fusion, there is no interface at the close contact portion m between the process fluid tube 10 and the liquid heat medium tube 20, and the process fluid 10 a is liquid. Heat transfer loss in heat exchange with the heat medium 20a can be reduced, and heat exchange efficiency can be improved.

  Further, the process fluid 10a that conducts the process fluid tube 10 that is a thin tube and the liquid heat medium 20a that conducts the liquid heat medium tube 20 integrated with the process fluid tube 10 have a gentle temperature change gradient. Since the heat exchange is performed, the temperature of the entire process fluid 10a can be controlled with high accuracy.

  Furthermore, each of the process fluid tubes 10 and the liquid heat medium tubes 20 is spread out in the height direction H and the width direction W at an appropriate interval, and the process fluid tubes are formed. 10 and the liquid heat medium tube 20 can be connected to the supply pipe and the delivery pipe, and the process fluid 10a and the liquid heat medium 20a are electrically connected to the different process fluid tubes 10 and the liquid heat medium tubes 20, respectively. Mixing of the process fluid 10a and the liquid heat medium 20a can be prevented.

  More specifically, for example, when the connection of the supply pipe or the delivery pipe to the process fluid tube 10 and the liquid heat medium tube 20 is uncertain, the process fluid 10a and the liquid heat medium 20a leak from the uncertain connection portion. Each may be mixed.

  However, since the tube separation portion 3 is formed, the supply pipe and the delivery pipe can be reliably connected to the process fluid tube 10 and the liquid heat medium tube 20, so that the process fluid 10a and the liquid heat medium 20a are supplied. There is no risk of leakage from the connection part between the pipe and the delivery pipe.

  In addition, since the process fluid 10a and the liquid heat medium 20a are divided into the process fluid tube 10 and the liquid heat medium tube 20 and are conducted, for example, one of the process fluid 10a and the liquid heat medium 20a from one of the tubes. Even if it leaks, the other process fluid 10a and the liquid heat medium 20a are not mixed.

  In addition, since the process fluid tube 10 and the liquid heat medium tube 20 are made of PTFE resin or modified PTFE resin, the resin heat exchanger 1 having stable quality and high chemical resistance can be formed. It is more reliably prevented that the fluid 10a and the liquid heat medium 20a are mixed.

  Specifically, since PTFE resin and modified PTFE resin are fluororesins that are often used among fluororesins, the process fluid tube 10 and the liquid heat medium tube 20 can be stably supplied, and also have chemical resistance. Therefore, it can be applied to various types of process fluid 10a and liquid heat medium 20a.

Note that different process fluids 10a may be individually conducted to the process fluid tubes 10. In addition, for example, the liquid heat medium tube 20 at the left end is connected to the warm liquid heat medium 20a, and the liquid heat medium tube 20 at the right end is connected to the cold liquid heat medium 20a. The liquid heat medium 20a having various temperatures different from each other may be conducted.
In this way, it is possible to manage various temperature distributions, and it is possible to obtain a resin heat exchanger 1 having extremely high versatility and stable quality.

Next, the manufacturing method of the resin heat exchanger 1 will be described with reference to FIGS.
FIG. 3 is an explanatory view of a preparation process for manufacturing the resin heat exchanger 1, and FIG. 4 is an arrangement in which the process fluid tube 10 and the liquid heat medium tube 20 are arranged in a fusion mold 100 for heat fusion. FIG. 5 is an explanatory view of an assembling process for assembling the fusion mold 100, and FIG. 6 is a plate for mounting a separation portion forming plate 200 for forming the tube separation portion 3. FIG. 7 is an explanatory view of the mounting process, and FIG. 7 is an explanatory view of the structure of the fusion mold 100 and the thermal fusion of the contact portion m.

First, the fusion mold 100, the separation portion forming plate 200, and the center core 300 for manufacturing the resin heat exchanger 1 will be described.
The fusion mold 100 that forms the heat exchange part 2 of the resin heat exchanger 1 has a rectangular parallelepiped shape with the same length as the heat exchange part 2, and includes an upper mold 110, a lower mold 120, Side presser molds 130, 130.

  As shown in FIG. 7A, the upper mold 110 has a process fluid tube 10 and a liquid heat medium tube 20, a fitting projection 121 of the lower mold 120, and a side presser at the center on the bottom surface side. The gate section is formed with a fitting recess 111 that allows the mold 130 to be fitted.

  The bottom surface 111a of the fitting recess 111 occupying about 3/4 of the width of the upper mold 110 has four upwardly protruding semicircular cross sections in the width direction W, and four tubes 20 for the liquid heat medium. The liquid heat medium tube locking groove 112 corresponding to the above is provided.

  In addition, on the outer side in the width direction W of the fitting recess 111 in the upper mold 110, there are provided fixing bolt through holes 113 that allow the fixing bolts 100 a to be penetrated in three places at predetermined intervals in the longitudinal direction L. .

  The lower mold 120 is a fitting in which five convex semicircular cross sections continue in the width direction W, and process fluid tube locking grooves 122 corresponding to the five process fluid tubes 10 are formed on the upper surface 121a. It is formed with a convex cross section having a convex portion 121.

  Further, a bolt screw hole that allows the fixing bolt 100a to be screwed into a position corresponding to the fixing bolt through hole 113 of the fusion mold 100 outside the width direction W of the fitting convex portion 121 in the lower mold 120. 123.

  The side presser mold 130 that is placed on the upper surface 121a of the fitting convex portion 121 and presses the side of the process fluid tube 10 and the liquid heat medium tube 20 is provided on the lower outer side of the liquid heat medium tube 20 and the process. It has an arc surface 131 in contact with the upper and outer sides of the fluid tube 10, and is fitted into the fitting recess 111 in a state where the outer surface in the width direction W is matched with the outer surface of the fitting protrusion 121.

  In addition, the liquid heat medium tube locking groove 112, the process fluid tube locking groove 122, and the arcuate surface 131 with which the process fluid tube 10 and the liquid heat medium tube 20 are in contact are formed on the process fluid tube 10 and the liquid heat medium. Anti-fusion plating for preventing the tube 20 from being fused is applied. In this embodiment, Kanigen plating for coating a nickel phosphorus alloy by chemical reaction is applied as anti-fusing plating. Further, the upper mold 110, the lower mold 120, and the side presser mold 130 are made of the same material.

  As shown in FIG. 6, the separation portion forming plate 200 is in a liquid state with each process fluid tube 10 at an appropriate interval with a through hole 201 that allows the process fluid tube 10 and the liquid heat medium tube 20 to pass therethrough. It is a thin plate steel plate provided for the number of the heat medium tubes 20, and two sheets are provided so as to be provided on both sides in the longitudinal direction L of the fusion mold 100.

  The core 300 has a gripping plate portion 301 at one end, and has a diameter that can be inserted into the internal space of the modified PTFE resin tube 30 constituting the process fluid tube 10 and the liquid heat medium tube 20. It is a thin bar. Note that the core 300 is configured with an appropriate strength capable of maintaining the shape of the modified PTFE resin tube 30 inserted into the internal space.

Next, a method for manufacturing the resin heat exchanger 1 using the fusion mold 100, the separation portion forming plate 200, and the core 300 will be described.
First, in the preparation step of the resin heat exchanger 1 shown in FIG. 3A, a predetermined number of modified PTFE resin tubes are formed for a predetermined length in order to form the process fluid tube 10 and the liquid heat medium tube 20. Then, as shown in FIG. 3 (b), the core 300 is inserted into each modified PTFE resin tube 30.

  In the present embodiment in which the resin heat exchanger 1 is constituted by four liquid heat medium tubes 20 and five process fluid tubes 10, nine modified PTFE resin tubes 30 cut to a predetermined length. The core 300 is inserted into each of these.

  Of the nine modified PTFE resin tubes 30 cut to a predetermined length, five process fluid tube tubes are used as modified PTFE resin tubes 30a, and four liquid heat medium tubes are used. The tube is a modified PTFE resin tube 30b.

  In the arrangement step shown in FIG. 4, in the modified PTFE resin tube 30 into which the inner core 300 is inserted, a portion corresponding to the heat exchange part 2 is fitted into the process fluid tube locking groove 122 of the lower mold 120, and the heat exchange is performed. The portion corresponding to the portion 2 is sandwiched between the both sides in the width direction W by the side presser molds 130.

  Then, in the assembling step shown in FIG. 5, the upper mold 110 is mounted from above the lower mold 120 so that the fitting convex part 121 fits into the fitting concave part 111, and fixed with the fixing bolt 100a ( 7 (b)), the core 300 is extracted from the modified PTFE resin tube 30.

  In the plate mounting step shown in FIG. 6, the separation portion forming plates 200 are mounted from both sides in the longitudinal direction L of the modified PTFE resin tube 30 to which the fusion mold 100 is mounted. Specifically, the modified PTFE resin tubes 30 constituting the four liquid heat medium tubes 20 and the five process fluid tubes 10 are inserted into the through holes 201 of the separation portion forming plate 200. Thereby, the modified PTFE resin tube 30 arranged in parallel in a trapezoidal shape so as to be in close contact with each other can be held in a state of spreading in the width direction W and the longitudinal direction L.

  In this state, the modified PTFE resin tube 30 is set together with the fusion mold 100 and the separation portion forming plate 200 in an electric furnace (not shown) in which the ambient temperature is set to 360 ° C. in advance, and heated for 1 hour. Thereafter, the mold is cooled until the mold temperature reaches 50 ° C.

  Thereby, as shown in FIGS. 7C and 7D, the process fluid tube 10 in which the close contact portions m of the modified PTFE resin tubes 30 arranged in parallel so that the outer surfaces are closely attached are fused and integrated, and The heat exchange part 2 comprised with the tube 20 for liquid heat media can be formed.

  Further, since the modified PTFE resin tube 30 is separated by a predetermined interval in the width direction W and the height direction H by the separation portion forming plate 200, the adjacent modified PTFE resin tube 30 is not fused. The tube separation portion 3 can be configured.

  As described above, the process fluid 10a and the liquid heat medium 20a are exchanged with high efficiency by the above-described manufacturing method using the fusion mold 100, the separation portion forming plate 200, and the core 300, and the process fluid 10a is accurately processed. It is possible to reliably manufacture the resin heat exchanger 1 capable of controlling the temperature.

  Specifically, improving the heat exchange efficiency by heating the heat exchanging unit 2 together with the fusion mold 100 arranged in parallel with the outer surfaces of the process fluid tube 10 and the liquid heat medium tube 20 being in close contact with each other, The close contact portion m can be reliably fused and formed.

  Further, in order to mount the separation portion forming plate 200 before heating, a supply pipe or a delivery pipe for supplying or delivering the process fluid 10a or the liquid heat medium 20a is provided on each of the process fluid tube 10 and the liquid heat medium tube 20. The tube separation portion 3 that can be reliably connected can be reliably and easily formed.

  Since the portion corresponding to the heat exchanging portion 2 in the modified PTFE resin tube 30 after the insertion of the core 300 is fitted into the process fluid tube locking groove 122 of the lower mold 120, the modified PTFE resin tube 30 is inserted. Can be held by the core 300, and the modified PTFE resin tube 30 can be easily fitted into the process fluid tube locking groove 122.

  Further, since the liquid heat medium tube locking groove 112, the process fluid tube locking groove 122 and the arc surface 131 in contact with the process fluid tube 10 and the liquid heat medium tube 20 are subjected to anti-fusing plating, After heating the fusion mold 100, the process fluid tube 10 and the liquid heat medium tube 20 can be released from the fusion mold 100.

  Therefore, for example, the process fluid tube 10 and the liquid heat medium tube 20 are peeled off by peeling off the process fluid tube 10 and the liquid heat medium tube 20 fused to the fusion mold 100. In comparison, it is possible to form the heat exchange section 2 that is reliably integrated.

  Further, since the upper mold 110, the lower mold 120, and the side presser mold 130 that constitute the fusion mold 100 are made of the same material, the adhesion portion m of the modified PTFE resin tube 30 is fused. Even when heated for the same reason, the thermal expansion due to heating in the upper mold 110, the lower mold 120, and the side presser mold 130 is about the same, and therefore, different thermal expansions are made by using different materials. As compared with the above, it is possible to obtain the resin heat exchanger 1 in which the close contact portion m is surely integrated by fusion.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
The fluid heat medium corresponds to the liquid heat medium 20a,
Similarly,
The fluid heat medium tube corresponds to the liquid heat medium tube 20,
The separation jig corresponds to the separation portion forming plate 200, but is not limited to the above embodiment.
For example, in the above description, the resin heat exchanger 1 configured in a trapezoidal shape with five process fluid tubes 10 and four liquid heat medium tubes 20 in close contact with each other in the width direction W has been described. As shown in FIG. 8A, six liquid heat medium tubes 20 closely arranged in parallel in the width direction W, three process fluid tubes 10 closely arranged in parallel, and one A single process fluid tube 10 that is separated and arranged may be asymmetrical.

  As a result, the process fluid 10a for conducting the three process fluid tubes 10 on the left side and the process fluid 10a for conducting the process fluid tube 10 on the right side are liquid heat media that are in close contact with the conducting process fluid tube 10 Since the number of tubes 20 for use is different, different temperature control can be realized.

  Further, as shown in FIG. 8B, in the width direction W between the process fluid tubes 10 adjacent to each other on the upper and lower sides of the five process fluid tubes 10 arranged in parallel in close contact with each other in the width direction W. You may arrange | position the six tubes 20 for liquid heat media arrange | positioned closely and arranged in parallel. As described above, since the liquid heat medium tubes 20 are arranged on both the upper and lower sides of the process fluid tube 10, temperature control is performed to further increase or decrease the temperature of the process fluid 10 a that conducts the process fluid tube 10. be able to.

Further, as shown in FIG. 8C, the liquid heat medium tube 20 may be arranged in a state of being in close contact with the periphery of one process fluid tube 10, and further, as shown in FIG. 8D. As described above, the process fluid tube 10 may be disposed in a state of being in close contact with one liquid heat medium tube 20, and the liquid heat medium tube 20 in a state of being in close contact with the process fluid tube 20 may be disposed.
Thereby, since the circumference | surroundings of the tube 10 for process fluids are surrounded by the tube 20 for liquid thermal media, more efficient heat exchange is realizable.

  Furthermore, in the above description, the process fluid tube 10 and the liquid heat medium tube 20 are formed using the modified PTFE resin tube 30 having the same shape. However, as shown in FIG. Alternatively, the liquid heat medium tube 20 may be disposed in close contact with the thick process fluid tube 10. Thereby, the process fluid 10a whose temperature is controlled to a desired temperature can be obtained at a desired flow rate.

DESCRIPTION OF SYMBOLS 1 ... Resin heat exchanger 2 ... Heat exchange part 3 ... Tube separation part 10 ... Process fluid tube 10a ... Process fluid 20 ... Liquid heat medium tube 20a ... Liquid heat medium 100 ... Fusion mold 200 ... Separation part formation Plate L ... Longitudinal direction m ... Close contact

Claims (1)

A method for manufacturing a resin heat exchanger, in which a process fluid is heat-exchanged with a fluid heat medium to control the temperature to a desired temperature,
A resin process fluid tube for conducting the process fluid and a resin fluid heat medium tube for conducting the fluid heat medium are arranged in parallel in a fusion mold with the outer surfaces in close contact with each other,
The process fluid tube and the fluid heat medium tube arranged in parallel to the fusion mold are heated together with the fusion mold, and the close contact portions where the outer surfaces are in close contact with each other are integrated by fusion. Forming a heat exchange section for exchanging heat between the process fluid and the fluid heat medium;
A separation jig for separating the process fluid tube and the fluid heat medium tube arranged in parallel to each other outside the fusion mold is attached before the heating, and the process fluid tube and the fluid A method for producing a resin heat exchanger, wherein tube-separating portions where the fluid heat medium tubes are separated from each other are formed on both longitudinal sides of the heat-exchanging portion.

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