JP2015117875A - Parallel flow type heat exchanger and its process of manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a parallel flow type heat exchanger and its process of manufacture capable of pre-coat treating in which brazing is unnecessary and easy to manufacture.SOLUTION: A parallel flow type heat exchanger comprises: aluminum corrugation gate fins 2 and an aluminum flat perforated refrigerant pipe 3 having a projection 33 protruding in a vertical direction, the projection 33 being provided in at least one end part in a crosswise direction of the refrigerant pipe 3 for regulating the position of the corrugation gate fins 2, in which the refrigerant pipe 3 and the corrugation gate fins 2 are laminated and joined with each other via an adhesive 4 coated on the surface of the refrigerant pipe 3.

Description

  The present invention relates to a parallel flow heat exchanger and a method for manufacturing the same, and more specifically, a parallel flow heat exchanger including an aluminum corrugated fin and an aluminum flat porous refrigerant tube, and the same It relates to a manufacturing method. Here, aluminum is meant to include an aluminum alloy.

  In general, in a corrugated fin type parallel flow heat exchanger, the corrugated fin and the flat refrigerant pipe are joined by a brazing method.

  In such a heat exchanger, corrugated fins and flat tubes are alternately stacked, and other necessary components are temporarily assembled into a product shape and integrated by brazing in a furnace.

  In order to perform brazing in the furnace, a corrugated fin made of a brazing sheet in which a brazing material is clad on the entire surface of an aluminum base material and an aluminum tube are used.

  Conventionally, as a method of manufacturing this type of parallel flow type heat exchanger, after bonding a wax foil to a surface of a refrigerant pipe, which is a flat heat exchange pipe tube, via a hot melt adhesive, A combination of corrugated fins and brazing by heating in a furnace is known (for example, see Patent Document 1).

JP 2003-1409 A

  However, since the technique described in Patent Document 1 uses a hot-melt adhesive and a brazing foil made of a composition such as Al—Si, the process of brazing in the furnace remains indispensable. In addition, hot melt adhesives are thermally decomposed during brazing heat, so there is a need for exhaust equipment and environmental considerations.

  The present invention has been made in view of the above circumstances, and provides a parallel flow type heat exchanger that is free of brazing, improves the degree of freedom of material selection, is energy saving, and is easy to manufacture, and a method for manufacturing the same. The task is to do.

  In order to achieve the above object, a parallel flow heat exchanger of the present invention is a parallel flow heat exchanger comprising an aluminum corrugated fin and an aluminum flat porous refrigerant tube, The refrigerant pipe is provided with a protrusion for position regulation of the corrugated fin projecting up and down at least one end in the width direction of the refrigerant pipe, and through an adhesive applied to the surface of the refrigerant pipe, The refrigerant pipes and the corrugated fins stacked on each other are joined to each other (claim 1).

  With this configuration, the corrugated fins can be bonded via the adhesive in a state where the corrugated fins are positioned on the protrusions for position regulation provided at both ends in the width direction of the flat refrigerant pipe. Further, even if the adhesive strength of the adhesive is reduced, the corrugated fins can be prevented from falling off by the position regulating protrusion.

  In the parallel flow heat exchanger according to claim 1, it is preferable to provide a plurality of adhesive application grooves or ridges along the longitudinal direction of the refrigerant pipe on the surface of the refrigerant pipe (claim 2). .

  By comprising in this way, a corrugated fin and a refrigerant | coolant pipe | tube adhere | attach with the adhesive agent filled in the groove | channel or between protrusions, and surface parts other than the groove | channel or protrusion of a refrigerant | coolant pipe | tube contact a corrugated fin.

  Further, in the parallel flow heat exchanger according to claim 1 or 2, the corrugated fin may be one that does not require brazing, for example, a bare material, a clad material that does not have a brazing material, or a surface repellent. A precoated corrugated fin coated with a water-based or hydrophilic film and a corrosion-resistant film is preferred (claims 3, 4, and 5).

  By comprising in this way, it can be set as the heat exchanger which does not use the brazing sheet which clad the brazing material on the whole surface of the aluminum base material, and according to a use, a bare material, the clad material which does not have a brazing material, a precoat Materials can be selected freely.

  A first parallel flow type heat exchanger manufacturing method according to the present invention is the parallel flow type heat exchanger manufacturing method according to any one of claims 1 to 5, wherein a thermoplastic resin is provided on a surface of the refrigerant pipe. After applying the adhesive mainly composed of the above, the refrigerant pipe and the corrugated fin are laminated with each other in a state where the adhesive is dried and the corrugated fin is positioned on the protrusion of the refrigerant pipe. Heating the assembly of the refrigerant tube and the corrugated fin to a temperature at which the adhesive melts, and filling the contact portion between the refrigerant tube surface and the corrugated fin with the adhesive, and A step of cooling the assembly and solidifying the adhesive to join the refrigerant pipe and the corrugated fin (claim 6).

  By configuring in this way, the corrugated fin is positioned on the protrusion for position regulation provided at the end in the width direction of the flat refrigerant pipe, and the corrugated fin and the refrigerant pipe are stacked and assembled with each other. Bonding can be performed using an adhesive mainly composed of a thermoplastic resin.

  A second parallel flow type heat exchanger manufacturing method according to the present invention is the parallel flow type heat exchanger manufacturing method according to any one of claims 1 to 5, wherein 2 is provided on the surface of the refrigerant pipe. A step of applying a liquid-reactive adhesive; and before the two-liquid reactive adhesive is solidified, the refrigerant pipe and the corrugated fin are connected to each other with the corrugated fin positioned on the protrusion of the refrigerant pipe. And the step of joining the refrigerant pipe and the corrugated fin by solidifying the two-component reactive adhesive (Claim 7).

  By configuring in this way, the corrugated fin is positioned on the protrusion for position regulation provided at the end in the width direction of the flat refrigerant pipe, and the corrugated fin and the refrigerant pipe are stacked and assembled with each other. Bonding can be performed using a two-component reactive adhesive.

  According to this invention, since it is configured as described above, the following effects can be obtained.

  (1) According to the invention described in claim 1, in the state where the corrugated fin is positioned on the projection for position regulation provided at at least one end in the width direction of the flat refrigerant pipe, the adhesive is By joining them, it is possible to eliminate the need for brazing, so that the equipment and maintenance costs associated with brazing can be reduced, and the production cost can be reduced.

  Further, since the corrugated fin position restricting projections that protrude vertically are provided at the end of the refrigerant tube in the width direction, the corrugated fins can be prevented from falling off even if the adhesive strength of the adhesive is reduced. .

  Further, since the dripping from the application of the adhesive to the drying can be suppressed by the protrusions at the end portions in the width direction of the refrigerant pipe, the application thickness can be easily controlled and the application amount can be optimized easily.

(2) According to the invention described in claim 2, by providing a plurality of adhesive application grooves or ridges along the longitudinal direction on the surface of the refrigerant pipe, adhesion filled in or between the grooves. Since the corrugated fin and the refrigerant pipe are bonded by the agent and the surface portion other than the groove or the protrusion of the refrigerant pipe contacts the corrugated fin, the heat transfer resistance due to the adhesive can be reduced. Therefore, in addition to the above (1), the heat transfer efficiency can be further improved. Further, since the dripping from the adhesive application to drying can be suppressed by the longitudinal grooves or protrusions of the refrigerant pipe, the application thickness can be easily controlled, and the application amount can be easily optimized.
(3) According to the inventions described in claims 3 to 5, since the material of the corrugated fin can be freely selected, a high-strength thin bare material is used for weight reduction or a clad material excellent in corrosion resistance is configured. In addition, it is possible to freely select the material configuration according to the application and demand, such as prevention of adhesion of condensed water on the surface by pre-coating.

  (4) According to the inventions described in claims 6 and 7, the corrugated fins and the refrigerant pipe are mutually connected by positioning the corrugated fins on the protrusions for position regulation provided at both ends in the width direction of the flat refrigerant pipe. Therefore, the corrugated fin and the refrigerant pipe can be easily assembled. In addition, since brazing can be made unnecessary, the equipment and maintenance costs associated with brazing can be reduced, and the thermal energy used for brazing can be reduced to a fraction of the environmental load. In addition, the production cost can be reduced.

It is a perspective view which shows the principal part of 1st Embodiment of the parallel flow type heat exchanger which concerns on this invention. It is principal part sectional drawing which shows the joining state of the corrugated fin and refrigerant pipe in 1st Embodiment. It is principal part sectional drawing which shows the joining state of the corrugated fin and another refrigerant pipe in 1st Embodiment. It is sectional drawing which follows the II line | wire of FIG. It is a perspective view which shows the refrigerant pipe in 1st Embodiment. It is a perspective view which shows the modification of the refrigerant pipe in 1st Embodiment. It is a perspective view which shows the principal part of 2nd Embodiment of the parallel flow type heat exchanger which concerns on this invention. It is principal part sectional drawing which shows the joining state of the corrugated fin and refrigerant pipe in 2nd Embodiment. It is the II section enlarged view of FIG. It is sectional drawing (a) which follows the III-III line of FIG. 7, and sectional drawing (b) which follows the IV-IV line. It is a perspective view which shows the refrigerant pipe in 2nd Embodiment. It is a waist part sectional view showing the joined state of another refrigerant pipe of a corrugated fin in a 2nd embodiment. It is the V section enlarged view of FIG. It is a perspective view which shows the principal part of 3rd Embodiment of the parallel flow type heat exchanger which concerns on this invention. It is principal part sectional drawing which shows the joining state of the corrugated fin and refrigerant pipe in 3rd Embodiment. It is principal part sectional drawing which shows the joining state of the corrugated fin and another refrigerant pipe in 3rd Embodiment. It is a perspective view which shows the principal part of 4th Embodiment of the parallel flow type heat exchanger which concerns on this invention. It is principal part sectional drawing which shows the joining state of the corrugated fin and refrigerant pipe in 4th Embodiment. It is the perspective view (a) which shows the refrigerant pipe in 3rd Embodiment, and the perspective view (b) which shows the refrigerant pipe in 4th Embodiment.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated in detail based on an accompanying drawing.

<First Embodiment>
A parallel flow heat exchanger 1 (hereinafter referred to as a heat exchanger 1) according to the present invention is made of an aluminum (including aluminum alloy) member, as shown in FIGS. 1, 2A, 3 and 4A. A plurality of corrugated fins 2 and a plurality of flat porous refrigerant tubes 3 made of aluminum are laminated to each other and bonded through an adhesive 4 applied to the surface of the refrigerant tube 3. Both ends of the refrigerant pipe 3 are connected to an aluminum header pipe (not shown).

  The refrigerant pipe 3 is formed of an aluminum extruded profile, and the refrigerant pipe 3 is partitioned in parallel by a plurality of partition walls 31 (in the drawing, seven cases are shown) perpendicular to the longitudinal direction. In addition, a plurality of rows (eight rows) of substantially rectangular channels 32 are provided. Further, protrusions 33 for restricting the position of the corrugated fins 2 projecting vertically are provided at both ends in the width direction of the refrigerant pipe 3.

  In this case, the protrusion 33 is formed in a triangular cross section having inclined surfaces 35 inclined outward from the upper and lower flat portions 34 at both ends in the width direction of the flat rectangular refrigerant tube base 30 having the flow path 32. ing.

  Thus, by providing the protrusions 33 at both ends in the width direction of the flat refrigerant pipe 3, the corrugated fin 2 and the refrigerant pipe 3 are assembled by positioning the corrugated fin 2 between the both protrusions 33 of the refrigerant pipe 3. Can be joined together. Further, the adhesive force of the adhesive 4 is reduced, and the protrusion 33 prevents the corrugated fin 2 from moving in the width direction of the refrigerant tube 3, thereby preventing the corrugated fin 2 from falling off. Moreover, when the protrusion 33 has the inclined surface 35 which inclines outward from the up-and-down flat part 34 in the both ends of the width direction of the refrigerant | coolant pipe base 30, when assembling | attaching the corrugated fin 2 and the refrigerant | coolant pipe 3, it is inclined. Since the surface 35 has a function of guiding the end of the corrugated fin 2 in the width direction, the assembly of the corrugated fin 2 and the refrigerant pipe 3 can be facilitated.

  In the above embodiment, the case where the protrusions 33 are provided at both ends in the width direction of the refrigerant pipe 3 has been described. However, the protrusions 33 may be provided at at least one end in the width direction of the refrigerant pipe 3. (See FIGS. 2B and 4B). Even in this case, the same effect as that obtained when the protrusions 33 are provided at both ends in the width direction of the refrigerant pipe 3 can be obtained.

  On the other hand, the corrugated fin 2 is formed in a continuous wave shape having a U-shaped cross section. The corrugated fin 2 formed in this way is, for example, a precoat in which a bare material, a clad material having no brazing material, or a surface of an aluminum material is coated with a resin film having water repellency, hydrophilicity, and corrosion resistance Fins are used.

Second Embodiment
In the heat exchanger 1 of the second embodiment, as shown in FIGS. 5 to 9, the refrigerant pipe 3A is provided on the surface between the protrusions 33 of the upper and lower flat portions 34 of the refrigerant pipe 3A in the longitudinal direction of the refrigerant pipe 3A. A plurality of adhesive application grooves 40 are provided. In this case, the groove 40 is preferably provided at a connection portion between the seven partition walls 31 and the flat portion 34 provided in the refrigerant pipe 3A. The reason is to prevent a decrease in the strength of the refrigerant pipe 3A due to the provision of the groove 40 on the surface of the flat portion 34.

  In the above embodiment, the case where a plurality of adhesive application grooves 40 along the longitudinal direction of the refrigerant pipe 3A is provided on the surface between the protrusions 33 of the upper and lower flat portions 34 of the refrigerant pipe 3A has been described. 10 and FIG. 11, instead of the groove 40, a plurality of protrusions for applying an adhesive along the longitudinal direction of the refrigerant pipe 3 </ b> A are formed on the surface between the protrusions 33 of the upper and lower flat portions 34 of the refrigerant pipe 3 </ b> A. 40A may be provided, and the adhesive 4 may be applied (filled) between the adjacent protrusions 40A. In this case, since the protrusion 33 functions as a fall-off prevention wall of the corrugated fin 2, the height of the protrusion 40A needs to be a height that does not exceed the protrusion 33 provided at the end in the width direction of the refrigerant pipe 3A. There is. As shown in FIGS. 10 and 11, the protrusion 40 </ b> A and the valley between the protrusions are formed in a continuous wave shape in a cross section orthogonal to the longitudinal direction of the refrigerant pipe 3 </ b> A.

  As described above, by providing a plurality of adhesive application grooves 40 or ridges 40A along the longitudinal direction of the refrigerant pipe 3A in the upper and lower flat part 34 of the refrigerant pipe 3A, the process from application of the adhesive to drying is performed. Since dripping can be suppressed, the coating thickness can be easily controlled, and the coating amount can be easily optimized.

  The refrigerant pipe 3A configured in this way is formed of an aluminum extruded profile. In the second embodiment, the other parts are the same as those in the first embodiment, so the same parts are denoted by the same reference numerals and description thereof is omitted.

  In the heat exchanger 1 of the second embodiment, the surface of the upper and lower flat part 34 of the refrigerant pipe 3A is applied (filled) between the plurality of adhesive application grooves 40 or the protrusions 40A along the longitudinal direction of the refrigerant pipe 3A. The corrugated fin 2 and the refrigerant pipe 3A are joined (adhered) via the adhesive 4 thus formed, and the corrugated fin 2 comes into contact with the surface portion other than the groove 40 or between the protrusions 40A. The heat resistance can be reduced to improve the heat transfer efficiency.

<Third Embodiment>
In the heat exchanger 1 of the third embodiment, the protrusions 33A provided on the refrigerant pipe 3B are flattened at both ends in the width direction of the refrigerant pipe base 30 as shown in FIGS. 12, 13A, and 16A. It is formed in a triangular cross section having a vertical surface 36 that stands vertically from the portion 34.

  The refrigerant pipe 3B configured as described above is formed of an aluminum extruded profile. In the third embodiment, the other parts are the same as those in the first embodiment. Therefore, the same parts are denoted by the same reference numerals and description thereof is omitted.

  In the heat exchanger 1 of the third embodiment, the corrugated fins 2 and the refrigerant pipes are disposed by providing the projections 33A at both ends in the width direction of the refrigerant pipe 3B so that the corrugated fins 2 are positioned between both the projections 33A of the refrigerant pipe 3B. 3B can be assembled and joined. Further, the adhesive force of the adhesive 4 is reduced, and the protrusion 33A prevents the corrugated fin 2 from moving in the width direction of the refrigerant tube 3B, thereby preventing the corrugated fin 2 from falling off. Further, the protrusion 33A has the vertical surfaces 36 that stand vertically from the upper and lower flat portions 34 at both ends in the width direction of the refrigerant pipe base 30, so that the left and right vertical parts can be viewed in the state where the corrugated fins 2 and the refrigerant pipe 3 are assembled. Since both ends of the corrugated fin 2 can be sandwiched by the surface 36, the assembled state of the corrugated fin 2 and the refrigerant pipe 3B can be stabilized, and the bonding between the corrugated fin 2 and the refrigerant pipe 3B can be ensured. can do.

  In the above embodiment, the case where the protrusions 33A are provided at both ends in the width direction of the refrigerant pipe 3B has been described. However, the protrusions 33A may be provided at at least one end in the width direction of the refrigerant pipe 3B. (See FIG. 13B). Also in this case, the corrugated fins 2 and the refrigerant pipes 3B are assembled and joined together by positioning the corrugated fins 2 on the protrusions 33A of the refrigerant pipe 3B, as in the case where the protrusions 33A are provided at both ends of the refrigerant pipe 3B. Can do. Further, the adhesive force of the adhesive 4 is reduced, and the protrusion 33A prevents the corrugated fin 2 from moving in the width direction of the refrigerant tube 3B, thereby preventing the corrugated fin 2 from falling off.

<Fourth embodiment>
In the heat exchanger 1 of the fourth embodiment, as shown in FIGS. 14, 15, and 16 (b), the refrigerant pipe 3C is formed on the surface of the upper and lower flat part 34 of the refrigerant pipe 3B and the longitudinal direction of the refrigerant pipe 3B. A plurality of adhesive application grooves 40 along the direction are provided. In this case, the groove 40 is preferably provided in a connection portion between the seven partition walls 31 and the flat portion 34 provided in the refrigerant pipe 3B. The reason is to prevent a decrease in the strength of the refrigerant pipe 3B due to the provision of the groove 40 on the surface of the flat portion 34.

  In the fourth embodiment, instead of the groove 40, a plurality of adhesive application ridges 40A along the longitudinal direction of the refrigerant pipe 3B are provided on the surface of the upper and lower flat portions 34 of the refrigerant pipe 3B, and adjacent protrusions are provided. An adhesive may be applied (filled) between the strips (see FIGS. 10 and 11).

  The refrigerant pipe 3C configured in this way is formed of an aluminum extruded profile. In addition, in 4th Embodiment, since another part is the same as 1st, 2nd embodiment, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

  In the heat exchanger 1 of the fourth embodiment, a plurality of adhesive application grooves 40 or protrusions 40A along the longitudinal direction of the refrigerant pipe 3C are formed on the surface between both protrusions 33A of the upper and lower flat portions 34 of the refrigerant pipe 3C. Since the corrugated fin 2 and the refrigerant tube 3C are joined (adhered) via the adhesive 4 applied (filled) to the surface portion other than the groove 40 or between the protrusions 40A and the corrugated fin 2, the corrugated fin 2 comes into contact. The heat transfer resistance due to the adhesive 4 can be reduced to improve the heat transfer efficiency.

  Next, the manufacturing method of the heat exchanger 1 which concerns on this invention is demonstrated. Here, the refrigerant pipe 3 of the first embodiment will be described as a representative.

<Manufacturing method 1>
First, a plurality of corrugated fins 2 having a wave shape with a predetermined pitch are prepared.

  On the other hand, an epoxy adhesive 4 mainly composed of a thermoplastic resin is applied to the surface between both projections 33 of the extruded refrigerant pipe 3 by using a known spray type or roller type. After apply | coating the adhesive agent 4, the refrigerant | coolant pipe | tube 3 is dried by heating at 50 degreeC or more for 5 minutes or more, for example (application | coating and drying process). Thus, after apply | coating the adhesive agent 4, the dried refrigerant | coolant pipe | tube 3 is prepared.

  Next, in a state where the corrugated fins 2 are positioned between the projections 33 of the refrigerant pipe 3, the plurality of corrugated fins 2 and the plurality of refrigerant pipes 3 are stacked and assembled with each other, and temporarily fixed by a fixture (not shown). Assembly process). During the assembling step, the inclined surface 35 of the projection 33 provided at the end portion in the width direction of the refrigerant tube 3 has a function of guiding the end portion in the width direction of the corrugated fin 2, so the corrugated fin 2 and the refrigerant tube 3 can be easily assembled.

  Next, the assembly of the corrugated fin 2 and the refrigerant tube 3 is heated to a temperature at which the adhesive 4 melts, for example, 100 ° C. or more for 5 minutes or more, and is bonded between the corrugated fin 2 and the refrigerant tube surface. The agent 4 is filled (adhesive filling step).

  Next, the assembly is cooled to solidify the adhesive 4, whereby the corrugated fin 2 and the refrigerant pipe 3 are joined (joining process), and the heat exchanger 1 is manufactured.

  According to this manufacturing method 1, the corrugated fins 2 and the refrigerant pipes 3 are laminated together by positioning the corrugated fins 2 on the position restricting projections 33 provided at the ends of the flat refrigerant pipes 3 in the width direction. Thus, the corrugated fins 2 and the refrigerant pipes 3 can be easily assembled. In addition, since brazing can be made unnecessary, the equipment and maintenance costs associated with brazing can be reduced, and the thermal energy used for brazing can be reduced to a fraction of the environmental load. In addition, the production cost can be reduced.

<Manufacturing method 2>
First, a plurality of corrugated fins 2 having a wave shape with a predetermined pitch are prepared.

  On the other hand, the epoxy two-component reactive adhesive 4 is applied to the surface between the protrusions 33 of the extruded refrigerant pipe 3 using a known spray method (application step).

  Before the two-component reactive adhesive 4 is solidified, the refrigerant pipe 3 and the corrugated fin 2 are laminated and assembled with the corrugated fin 2 positioned on the protrusion 33 of the refrigerant pipe 3, and fixed by a fixture (not shown). Temporarily fix (assembly process).

  By solidifying the two-component reaction type adhesive 4, the refrigerant pipe 3 and the corrugated fin 2 are joined (joining process) to produce the heat exchanger 1.

  According to this manufacturing method 2, since it is not necessary to melt and cool the adhesive, in addition to the effects of the manufacturing method 1, the heat exchanger 1 can be easily manufactured with fewer steps.

  According to the heat exchanger 1 of the embodiment manufactured as described above, the corrugated fin 2 made of aluminum and the flat porous refrigerant tubes 3, 3A, 3B, and 3C made of aluminum are interposed with an adhesive. By joining together, brazing can be made unnecessary, so the equipment and maintenance costs associated with brazing can be reduced, and the thermal energy used for brazing can be reduced to a fraction of the environment. The load is small and the production cost can be reduced.

  Further, since the corrugated fin position restricting projections 33 and 33A projecting vertically are provided at both ends in the width direction of the refrigerant tubes 3, 3A, 3B and 3C, the adhesive force of the adhesive 4 is reduced. However, the corrugated fins can be prevented from falling off.

  Further, by providing a plurality of adhesive application grooves 40 or protrusions 40A along the longitudinal direction on the surfaces of the refrigerant tubes 3A and 3C, the corrugated fins are formed by the adhesive 4 filled in the grooves 40 or between the protrusions 40A. 2 and the refrigerant pipes 3A and 3C are bonded, and the surface portions of the refrigerant pipes 3A and 3C other than the grooves 40 or the protrusions 40A are in contact with the corrugated fins 2, so that the heat transfer resistance by the adhesive 4 is reduced and transferred. Thermal efficiency can be improved.

  Since the corrugated fin 2 material can be freely selected, it is possible to use a high-strength, thin-walled material for weight reduction and to construct a clad material with excellent corrosion resistance. This makes it possible to freely select a material configuration that meets the application and demand.

DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Corrugated fins 3, 3A, 3B, 3C Refrigerant pipe 4 Adhesive 31 Partition wall 32 Flow path 33, 33A Protrusion 40 Groove 40A for adhesive application Projection for adhesive application

Claims (7)

A parallel flow type heat exchanger comprising an aluminum corrugated fin and an aluminum flat porous refrigerant pipe,
The refrigerant pipe is provided with a protrusion for regulating the position of the corrugated fin that protrudes up and down at at least one end in the width direction of the refrigerant pipe,
A parallel flow type heat exchanger, wherein the refrigerant pipes and the corrugated fins that are laminated to each other are joined to each other through an adhesive applied to the surface of the refrigerant pipe. In the parallel flow type heat exchanger according to claim 1,
A parallel flow type heat exchanger, wherein a plurality of adhesive application grooves or ridges along the longitudinal direction of the refrigerant pipe are provided on the surface of the refrigerant pipe. In the parallel flow type heat exchanger according to claim 1 or 2,
The parallel flow heat exchanger according to claim 1, wherein the corrugated fin is a bare material. In the parallel flow type heat exchanger according to claim 1 or 2,
The parallel flow heat exchanger according to claim 1, wherein the corrugated fin is a clad material having no brazing material. In the parallel flow type heat exchanger according to claim 1 or 2,
The parallel flow heat exchanger according to claim 1, wherein the corrugated fin is a pre-coated corrugated fin having a surface coated with a film having water repellency, hydrophilicity, and corrosion resistance. It is a manufacturing method of the parallel flow type heat exchanger according to any one of claims 1 to 5,
A step of drying the adhesive after applying an adhesive mainly composed of a thermoplastic resin to the surface of the refrigerant tube;
In a state where the corrugated fin is positioned on the protrusion of the refrigerant pipe, the refrigerant pipe and the corrugated fin are stacked and assembled with each other;
Heating the assembly of the refrigerant pipe and the corrugated fin to a temperature at which the adhesive melts, and filling the contact portion between the refrigerant pipe surface and the corrugated fin with the adhesive;
Cooling the assembly and solidifying the adhesive to join the refrigerant pipe and the corrugated fin.
A method of manufacturing a parallel flow heat exchanger. It is a manufacturing method of the parallel flow type heat exchanger according to any one of claims 1 to 5,
Applying a two-component reactive adhesive to the surface of the refrigerant tube;
A step of laminating and assembling the refrigerant pipe and the corrugated fin in a state where the corrugated fin is positioned on the protrusion of the refrigerant pipe before the two-component reactive adhesive is solidified;
Joining the refrigerant pipe and the corrugated fin by solidifying the two-component reactive adhesive,
A method of manufacturing a parallel flow heat exchanger.

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