JP2002243388A - Method for assembling heat exchanging elements such as cooling tower or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a heat exchange efficiency of a circulating cooling water by enabling heat exchanging elements to be simply assembled in a little steps only by inserting and assembling the predetermined number of closed heat exchangers previously molded in a zigzag manner between a pair of supporting side plates, by preparing the predetermined number of the closed exchanges, and assembling the elements so as to apply scattering water even to bent parts. SOLUTION: A method for assembling the heat exchanging elements comprises the steps of preparing the predetermined number of the closed heat exchanges B each made of a heat exchanger coil formed by previously connecting a pipe 11 with a U-bent tube 12 and molding one pipe in the zigzag manner, inserting the outside of the bent part 12a of each of the U-bent tubes 12 of the closed heat exchangers B from the inside of a long lateral groove 16 of the support 14, and supporting a plurality of the exchangers B between the pair of the support side plates 13. Thus, the heat exchanging elements T are simply assembled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a heat exchanger for a cooling tower or a heating tower.

[0002]

2. Description of the Related Art Various types of heat exchangers for cooling towers of this type have been developed and manufactured.
The following structure is manufactured. A support plate (also referred to as a tube plate) of the heat exchanger for a cooling tower includes a pair of left and right side plates 1, and a plurality of pipe holes are burred in each side plate in upper and lower stages, and sealed in the holes in each stage. The pipes of the heat exchangers are inserted, and the ends of adjacent pipes are brazed on the outer surfaces of the side plates with U-vent pipes. The cooling tower heat exchanger is supported by the pair of side plates over multiple stages. At this time, all the U vent pipes in the closed type heat exchanger in each stage are concealed or partitioned by each side plate side. As the heat exchanger for a cooling tower having the above-mentioned another structure, an electric insulating spacer for preventing illumination is assembled at a connection portion between the pipe of the sealed heat exchanger and the U vent pipe, and the electric insulating spacer is attached from the inside. Surrounding guide rails are provided on the support plate in multiple stages.

[0003]

In the prior art, all the U vent pipes in the closed heat exchanger at each stage are concealed from the heat exchange section by the side plates or the guide rails. Each U vent pipe does not come into contact with the spray water, and in each U vent pipe portion, the circulating cooling water flowing therethrough has no heat exchange with the spray water, and the cooling efficiency of the circulating water tends to decrease. . In addition, when an earthquake occurs, there is a fear that the brazed portion, which is a connection portion between the pipe and the U vent pipe, may be damaged, and the U vent pipe may fall off. An object of the present invention is to prepare a predetermined number of hermetically molded hermetic heat exchangers in advance, insert them between a pair of support side plates and assemble them, and make it possible to easily assemble a heat exchanger in a few steps, and Another object of the present invention is to provide a method of assembling a heat exchanger so that spray water is applied thereto, and assembling a heat exchanger that improves heat exchange efficiency of circulating cooling water. Another object of the present invention is to use a heat exchange coil previously formed as a meandering tube by assembling it on a supporting side plate so as to support each bent portion of the heat exchange coil in each stage of the closed type heat exchanger on the outside thereof. In addition to this, it is also possible to assemble a heat exchange coil provided with a fin near the support side plate, and to prevent the bent portions such as the U vent pipes from falling off or being damaged from the support portion by vibration such as an earthquake. An object of the present invention is to provide a market for a method of assembling a heat exchanger that can be easily prevented. Another object of the present invention is to simplify the support structure of each bent portion of the heat exchange coil in the closed type heat exchanger of each stage, reduce the number of parts of the heat exchanger for the cooling tower, simplify the structure, and To facilitate assembly and disassembly, to reduce the manufacturing cost, or to facilitate maintenance. Another object of the present invention is to improve the assembling of the support side plate and the U-vent pipe so that even if the support side plate is made of metal, electric corrosion does not occur between the vent pipe and the support side plate. It is to be. Another object of the present invention is to make it possible to assemble even a heat exchange coil formed by bending a single pipe meanderingly, instead of being connected by a U vent pipe.

[0004]

In order to achieve the above object, a specific invention is directed to a closed type heat exchanger comprising a heat exchange coil forming a meandering circulating cooling water passage, which is composed of a pair of upper and lower support side plates which are substantially horizontal. In the method of assembling a heat exchanger such as for a cooling tower supported on the pair of support side plates, a support portion that supports a plurality of U-shaped bent portions of the heat exchange coil in upper and lower multiple stages is formed, The support portion is provided as one of a horizontally long hole, a horizontally long recess, and a horizontal groove, and the number of the sealed heat exchangers corresponding to the number of stages of the support portion is prepared. Inserting these bent portions in the mold heat exchanger, and in this state, a locking rod that is engaged at least inside the bent portions located at both end portions is vertically inserted along the support side plate, and the locking is performed. Front of the pair of supporting side plates by a rod There a method of assembling a heat exchanger such as a cooling tower, characterized in that to attach the heat exchange coil in a vertical multistage.

In order to achieve the above object, in the method for assembling a heat exchanger, each of the support portions and each of the locking rods in contact with the bent portions of the heat exchange coil are made of an electrically insulating material. It is characterized by using a molded one.

In order to achieve the above object, in this method of assembling a heat exchanger, a synthetic resin is applied or a synthetic resin molded product is fitted to an inner surface of the support portion which comes into contact with the bent portion of the heat exchange coil. It is characterized by the following.

In order to achieve the above object, the method for assembling a heat exchanger is characterized in that the pair of supporting side plates are formed of synthetic resin.

In order to achieve the above object, the method for assembling a heat exchanger is characterized in that the locking rod is formed of an elastic flat plate.

In order to achieve the above object, in the method for assembling a heat exchanger, the width of the support portion substantially corresponds to the width dimension of the bent portion of the heat exchange coil, and the width of the elongated hole is at least one. The upper and lower edges project outward from the inside of the support side plate to form a bent portion support jaw,
The center portion of the support jaw is cut out to a size corresponding to the width of the locking bar, and a support side plate is used as a passage for inserting and engaging the locking bar.

In order to achieve the above object, in the method for assembling a heat exchanger, the horizontally long recess is formed as a bent portion storage recess in which a part of the support side plate bulges outward from the inside to open inside. The storage recess is provided with through holes formed in upper and lower walls of the storage recess, into which the locking rods are inserted.

In order to achieve the above object, in the method for assembling a heat exchanger, at least the upper and lower edges of the elongated hole are formed by:
A bent portion support jaw is formed by projecting outward from the inside of the support side plate, and a lock rod insertion opening through which the lock bar can be inserted is formed inside the support side plate on the opposite side of the support jaw. It is characterized by using what has been done. In order to achieve the above object, in the method for assembling a heat exchanger, the lateral groove is formed into a U-shaped cross section or a U-shaped cross section, and a part of the support side plate is formed by projecting outward from the inside. The upper and lower walls of the lateral groove are provided with through holes through which the locking rods can be inserted and hooked, and the bent portion of the heat exchange coil is moved from the longitudinal direction of the lateral groove to the lateral groove. It is characterized by being inserted into and assembled.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 This embodiment is a typical embodiment including the inventions described in claims 1, 2, 3, 5, and 6. 1, 2, 3, and 3
In the cross-flow cooling tower A, a straight pipe 11 is connected by a U vent pipe 12 below the upper water tank 10 in the cross-flow cooling tower A to form a circulating cooling water passage meandering in a plane direction. A sealed heat exchanger B composed of heat exchange coils 11a is supported by a pair of supporting side plates 13 in a substantially horizontal manner at upper and lower stages (see FIG. 2), and a circulating water supply port of each of the sealed heat exchangers B is common. A heat exchanger T connected to a supply header (not shown) and having a circulating water discharge port connected to a common discharge header (not shown) is loaded.

To assemble such a heat exchanger T,
The heat exchange coils 1 are provided on the pair of supporting side plates 13 in upper and lower stages.
1a, a plurality of heat exchange coils 11a corresponding to the number of stages of the support portions 14 are prepared by forming a support portion 14 for supporting the plurality of U-shaped bent portions 12a in FIG. 14, these bent portions 12 a of the heat exchange coil 11 a are inserted from inside the pair of support side plates 13. In this state, for each of the bent portions 12a, a locking rod 15 that engages inside the bent portion 12a is inserted vertically along the support side plate 13, and the pair of support side plates are The heat exchange coils 11a are attached to the upper and lower stages 13 in multiple stages. It is to be noted that the locking bar 15 does not need to be provided corresponding to all the bent portions 12a, and the embodiment in which only the bent portions 12a located at both ends are hooked to the support side plate 13 is also an embodiment of the present invention.

The support portion 14 is formed as a horizontally long hole 16, and the locking rod 15 for supporting the closed type heat exchanger 11 on the support side plate 13 is formed of an electrically insulating synthetic resin such as polyvinyl chloride. A plurality of bent portions 12a of each hermetically sealed heat exchanger 11 are molded with copper, which is a kind of metal, and the bent portions 12a of the hermetically sealed heat exchanger 11 are vertically aligned. It is desirable to insert the locking rod 15 between the outer side of the support side plate 13 and the outer side of the support side plate 13 in order to prevent electric corrosion.
An inner peripheral edge of the horizontally long hole 16 projects outward from the outside of the support side plate 13 to form a bent portion support jaw 17, and a central portion of the support jaw 17 corresponds to a width of the locking rod 15. Notch in size, insertion of the locking rod 15, hooking passage 19
It is preferable to use a certain one. (See FIG. 4). The locking rod 15 is formed of an elastic flat plate.

The locking rod 15 may be a metal leaf spring whose surface is insulated and coated with a synthetic resin material, and the above-mentioned synthetic resin molded product is preferable in terms of cost. The synthetic resin is not limited to vinyl chloride, but may be made of a polyolefin-based resin such as polyethylene or polypropylene, polycarbonate, or other engineering plastics, and is preferably slightly elastic such as a leaf spring. In the header portion, since the width of the bent portion 12a is formed wider than other portions, the one in which the width of the horizontally long hole 16 is formed to be corresponding to the width is used.

As the support side plate 13, a metal plate having a large supporting force, for example, a steel plate or a stainless steel plate plated with zinc or the like is generally used, but a synthetic resin plate having an electrical insulation property, for example, a vinyl chloride plate, Another embodiment of the invention according to claim 4 is to use an engineering plastic plate having a large mechanical strength or a plate in which an electric insulating material is coated or laminated on the entire inner surface of the support side plate 13. The inner surface of the horizontally long hole 16 that is the support portion 14 in contact with the bent portion 12a of the heat exchange coil 11 is made of synthetic resin, and the horizontally elongated hole 16 that is the support portion 14 that is in contact with the bent portion 12a.
It is desirable to form an electrically insulated portion in contact with the inner surface from the viewpoint of preventing electrical corrosion. It is preferable to apply a synthetic resin to the inner surface of the horizontally long hole 16. Instead of this application, a mouthpiece made of a synthetic resin molded product may be fitted into the horizontally long hole 16, which is included in the embodiment of the third aspect of the present invention.

The support side plate 13 of the heat exchanger T thus assembled is fixed to a column (not shown) of the cooling tower A, which is parallel to the flow direction of the outside air flow. Load inside. After the loading, the tension member is removed from between the pair of support side plates 13. The tension member may be left attached. These assemblies are in principle assembled at the factory, but on-site assembly after replacing or temporarily removing the heat exchanger and after cleaning or other maintenance is also within the scope of the embodiment of the present invention. In the above-described embodiment, the heat exchange coil 11a that connects the straight pipes 11 with the U vent pipes 12 to form a circulating cooling water passage meandering in a plane direction has been described. Or a long U-shaped pipe with a U-vent pipe 12
The use of the heat exchange coil 11a connected by the above is also included in the embodiment of the method of the present invention. In short, any method using a meandering heat exchange coil is included in the embodiment of the method invention. In the assembling method configured as described above, a hole for passing a number of pipes 11 is formed in the support side plate 13 as in the conventional example, and after passing the pipes 11, the U vent pipes 12 are sequentially fitted, It does not require a brazing step, a predetermined number of the hermetically sealed heat exchangers B made of heat exchange coils formed by connecting the pipes 11 in advance with the U vent pipes 12 or forming one pipe in a meandering form, The outside of the bent portion 12a of the U vent pipe 12 of the sealed heat exchanger B is inserted into the elongated groove 16 of the support portion 14 from the inside, and the plurality of the sealed heat exchangers are inserted between a pair of support side plates 13. Since the vessel B is supported, the heat exchanger T can be easily assembled with fewer steps than the conventional method for assembling the heat exchanger. Further, in the step of attaching the hermetic heat exchanger B to the support portion 14, there is no need to perform a heating operation such as brazing after inserting a straight pipe into the side plate as described in the conventional assembling method, The support side plate 13 itself can also use a thermoplastic synthetic resin molded product, and the assembling process is further simplified.

In particular, before the hermetic heat exchanger B is assembled to the support side plate 13 and the support portion 14, each hermetic heat exchanger B is assembled in a completely completed state. Therefore, the heat exchange coil may be a continuous pipe or a straight or U-shaped pipe 11 connected by a U vent pipe 12. Further, even when a large number of fine fins are fixed to the straight pipe 11, even if the fins are attached in advance to the vicinity of the support portion 14, there is no trouble in assembling, and the cooling tower heat having a high heat exchange capacity has no problem. The exchange body T is assembled.

By assembling the heat exchanger T in this manner, the outside of the bent portion 12a is inserted into each of the long grooves 16 from the inside of the long groove 16, and the bent portions 12a are held so as to be held. Is attached to the support side plate 13, and in this state, the support side plate 13 is fixed to a support (not shown) which is a support frame of the cooling tower. The sealed heat exchanger B of the stage does not move with respect to the support side plate 13 and the support portion 14 by the locking rod 15, and the heat exchange coil 12 a does not come off from each of the elongated holes 16. Does not drop from 13.

The electrically insulating support portion 14 is made of vinyl chloride, which is a kind of synthetic resin having electrical insulation, and the pipes 11 and the U vent pipe 12 are made of copper, which is a kind of metal. By supporting and assembling the outside of the bent portion 12a of the U-vent pipe 12, the electric corrosion does not occur between the electrically-insulating support section 14 and each of the pipes 11 to U-vent pipe 12. Pipe 11
In addition, the phenomenon that a small hole is formed in the U vent pipe 12 and the circulating cooling water leaks does not occur.

Further, in each of the laterally elongated grooves 16, each bent portion 1
By inserting, supporting and assembling 2a, spray water is also applied to each of the bent portions 12a, and an external air flow flows, so that heat is exchanged also in this portion, and the heat exchange capacity of this heat exchanger T Improve.

If the pair of supporting side plates 13 are formed of a synthetic resin, there is no need to apply the resin to the elongated holes 16 made of the synthetic resin, and only the assembly with the closed heat exchanger B is required.
It is convenient for assembling (corresponding to the embodiment of the invention described in claim 4).

As the heat exchange coil 11a, a straight pipe formed by bending a U-shaped pipe is arranged in parallel, the ends of adjacent pipes are connected by a U-vent pipe 12, and the circulation is meandering in a plane direction. A cooling channel may be formed. Further, the heat exchange coil 11a may be formed by meandering and bending a single pipe to form a circulating cooling water passage, or may be formed by sequentially connecting long U-shaped tubes of a straight pipe portion to form a meandering water passage. It falls within the scope of the embodiment of the present invention.

Embodiment 2 This embodiment is a typical embodiment of the invention described in claims 1, 2, 3, 5, and 7. The configuration different from the first embodiment is as follows. The support portion 14 is formed in a horizontally long recess 20, and the horizontally long recess 20 is formed by swelling a part of the support side plate 13 from the inside to the outside in accordance with the shape of the outside of the bent portion 12 a, Is used as the bent portion storage recess 21 which is open. For the upper and lower walls 22 of the storage recess 21, a hole 23 into which the locking bar 15 is inserted is formed in close contact with the outer surface of the support side plate 13 (FIG. 5).
reference).

Embodiment 3 This embodiment is a typical embodiment of the invention described in claims 1, 2, 3, 5, and 8. The configuration different from the first embodiment is as follows. The support side plate 1 is provided on the opposite side of a support jaw (not shown) formed on an inner peripheral edge of the horizontally long hole 16.
A lock rod insertion opening 24 into which the lock rod 15 can be inserted and hooked is formed inside the lock rod 3. This locking rod insertion opening 2
4 is formed between a pair of mutually inward engaging claws 25 formed to be separated from each other in the lateral direction, and the inner dimension between these engaging claws 25 is matched with the width dimension of the locking rod 15. (See FIG. 6). In this embodiment, the locking rod 1
5 is inserted along the inside of the support side plate 13, and the bent portion 12 a is stopped on the support side plate 13. In this embodiment, the bent portion 12a is positioned inward of the first and second embodiments, corresponding to the thickness dimension of the locking rod 15, so that the heat exchange coil 11 and the spray water and the outside air flow can be directly connected to each other. Increase the contact area and improve the heat exchange capacity.

Embodiment 4 This embodiment is a typical embodiment of the invention described in claims 1, 2, 3, 5, and 9. The configuration different from the first embodiment is as follows. The support portion 14 is a lateral groove 26,
The lateral groove 26 has a U-shaped cross section or a U-shaped cross section. A part of the support side plate 13 extends outward from the inside, and the upper and lower walls 27 of the lateral groove 26 are provided with the locking rods 15. Is inserted,
A through hole 29 which can be freely engaged is used. The bent portion 12a of the heat exchange coil 11 is
(See FIG. 7). In this embodiment, the bent portion 12a of the heat exchange coil 11 is inserted into the lateral groove 26 from the longitudinal direction of the lateral groove 26, and the locking bar 15 supports the bent portion 12a in this state. The lateral groove 2 of the side plate 13
Fix to 6.

[0027]

According to the first to ninth aspects of the present invention, a predetermined number of pre-manufactured closed heat exchangers are prepared,
By simply inserting and assembling between a pair of side plates, a heat exchanger can be easily assembled in a few steps, and a heat exchanger with spray water also at the bent part can be easily assembled with high heat exchange ability as a whole. Assembled. The outside air flow flows from the position of each bent portion to the very near, and the spray water is sprayed, so that the heat exchange area is widened, and the heat exchange efficiency of the heat exchanger in each stage can be improved. In addition, by assembling each bent portion of the heat exchange coil in the closed-stage heat exchanger of each stage to the support side plate with the locking bar, there is a case where each bent portion does not drop off from the support portion due to vibration such as an earthquake. can get. Furthermore, by assembling in this manner, the heat exchange cosyl in the closed type heat exchanger is connected to a straight pipe by a U vent pipe to form a heat exchange coil forming a circulating cooling water passage meandering in a plane direction. Even if the pipe is formed into a heat exchange coil by meandering the pipe, the pipe is bent into a U-shape, two fins are collectively provided on the pipe, these are sequentially arranged, and the ends of the adjacent pipes are connected to each other. A heat exchanger is assembled using a closed heat exchanger such as one connected by a U vent pipe.

In particular, in the invention according to the second aspect, each of the support portions and each of the locking rods in contact with the bent portion of the heat exchange coil are formed of an electrically insulating material. In this way, an assembly that does not cause electrical corrosion between the bent portion and the support side plate even if the support side plate is made of metal is assembled. A heat exchanger that does not cause electrical corrosion is assembled between the support side plate and each of the bent portions, and even if the support side plate is formed of metal, small holes due to the electrical corrosion are formed in each of the U vent pipes or pipes. Therefore, there is no possibility of assembling a component in which the circulating cooling water leaks due to the occurrence.

According to the third aspect of the present invention, since the synthetic resin is applied or a synthetic resin molded product is fitted on the inner surface of the support portion which comes into contact with the bent portion of the heat exchange coil. The described effects can be remarkably exhibited with a simple structure. In particular, in a mode in which the synthetic resin is applied to the inner surface of the support portion that comes into contact with the bent portion of the heat exchange coil, the number of components is small and the synthetic resin material does not fall off.

According to the fourth aspect of the present invention, since the pair of support side plates are made of synthetic resin, there is no need to electrically insulate the horizontally long holes, and only the assembly with the closed heat exchanger is required. While being convenient, the effects described in claim 2 can be remarkably exhibited with a simpler structure.

In the invention according to claim 6, the width of the support portion substantially corresponds to the width dimension of the bent portion of the heat exchange coil and is a horizontally elongated hole, and at least the upper and lower edges of the horizontally elongated hole are formed by the support side plate. The projection protrudes outward from the inside to form a bent portion support jaw, and a center portion of the support jaw is cut out at a size corresponding to the width of the locking bar to form a passage for inserting and engaging the locking bar. By using a material, the bent portion can be stably supported in a relatively large area, and the locking rod can be inserted in a state of being tightly contacted with the inner surface of the supporting side plate. The heat exchange function of the vessel can be further enhanced, and assembly and disassembly can be facilitated. Further, in addition to the above-described effects, the notch prevents the locking rod from being displaced in the longitudinal direction of the horizontally long hole with respect to the support side plate,
It can be stably fixed along the inner side surface of the support side plate.

[0032] In the invention described in claim 7, the laterally long recess is formed by bending a part of the support side plate outward from the inside to form an inwardly bent bent portion storage recess. In addition to the above-described effects, by using a member having a through-hole into which the locking rod is inserted, the bent portion is formed of a metal different from the bent portion. It is possible to avoid direct contact with the electrode and prevent the occurrence of electric corrosion.

[0033] In the invention according to claim 8, at least the upper and lower edges of the oblong hole protrude outward from the inside of the support side plate to form a bent portion support jaw, and the bent side support jaw is formed on the opposite side of the support jaw. On the inner side, in addition to the above-mentioned effects, in addition to the above-described effects, the tip of the bent portion is formed from the boundary between the bent portion and the straight pipe by using the one in which the locking bar has a locking rod insertion opening through which the locking bar can be inserted. The heat exchange coil can be supported closer.

According to the ninth aspect of the present invention, the heat exchange is performed by using the lateral groove having a U-shaped cross section or a U-shaped cross section, in which a part of the support side plate projects outward from the inside. By inserting the bent portion of the coil into the lateral groove from the longitudinal direction of the lateral groove, in addition to the above-mentioned effect, all the bent portions of the heat exchange coil are inserted into the lateral groove in the longitudinal direction. The heat exchanger can be inserted from any direction, the assembly can be performed stably, and the heat exchanger can be disassembled and maintained smoothly.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a cross-flow cooling tower according to a first embodiment.

FIG. 2 is a schematic front view showing a heat exchanger part in FIG.

FIG. 3 is a partially omitted vertical front view of FIG. 2;

FIG. 4 is a cross-sectional view of FIG.

FIG. 5 is a schematic cross-sectional plan view showing a heat exchange coil part according to a second embodiment.

FIG. 6 is a perspective view of a main part of a third embodiment.

FIG. 7 is a schematic longitudinal sectional front view showing a heat exchange coil portion according to a fourth embodiment.

[Explanation of symbols]

 Reference Signs List A cross-flow cooling tower 10 upper water tank 11 pipe 11a heat exchange coil 12a bent portion B hermetic heat exchanger 13 support side plate 14 support portion 15 engaging rod 16 horizontal elongated groove

Claims (9)

[Claims] 1. A method for assembling a heat exchanger for a cooling tower or the like in which a closed type heat exchanger comprising heat exchange coils forming a meandering circulating cooling water passage is supported by a pair of supporting side plates substantially horizontally in upper and lower stages. In the pair of support side plates, a support portion that supports a plurality of U-shaped bent portions of the heat exchange coil in upper and lower multiple stages is formed,
Using the support portion as one of a horizontally long hole, a horizontally long recess, and a lateral groove, prepare a number of the hermetically sealed heat exchangers corresponding to the number of stages of the support portion, the support portion of each stage the Inserting these bent portions in the hermetically sealed heat exchanger, and in this state, inserting a locking rod that engages at least inside the bent portions located at both end portions in the vertical direction along the support side plate, A method for assembling a heat exchanger for a cooling tower or the like, wherein the heat exchange coils are attached to the pair of support side plates in a vertically multi-stage manner with a retaining rod. 2. The heat exchange coil according to claim 1, wherein each of said support portions and each of said locking rods abutting on said bent portion is made of an electrically insulating material. For assembling heat exchangers for cooling towers. 3. A synthetic resin coating or a synthetic resin molded product is fitted on an inner surface of said support portion in contact with said bent portion of said heat exchange coil.
A method for assembling a heat exchanger for a cooling tower as described in the above. 4. The method for assembling a heat exchanger for a cooling tower or the like according to claim 1, wherein said pair of support side plates are formed of synthetic resin. 5. The method for assembling a heat exchanger for a cooling tower according to claim 1, wherein said locking rod is formed of an elastic flat plate. 6. A width of the support portion substantially corresponds to a width dimension of the bent portion of the heat exchange coil, and the width is defined as a horizontally long hole.
At least the upper and lower edges of this oblong hole project outward from the inside of the support side plate to form a bent portion support jaw,
4. A support side plate, wherein a center portion of the support jaw is cut out at a size corresponding to a width of the locking bar, and a support side plate is used as a passage for inserting and locking the locking bar. ,
6. A method for assembling a heat exchanger for use in a cooling tower according to 4 or 5. 7. The storage device according to claim 7, wherein the horizontally long recess is formed by bending a part of the support side plate outward from the inside to form a bent portion storage recess having an open inside, and the locking bar is provided on upper and lower walls of the storage recess. 6. The method for assembling a heat exchanger for use in a cooling tower according to claim 1, wherein a through hole to be inserted is used. 8. A bent portion supporting jaw is formed by projecting at least upper and lower edges of the horizontally long hole outward from the inside of the support side plate, and the opposite side of the support jaw and the inside of the support side plate is provided with the engaging member. 1, 2, 3, 4 or 5 characterized in that a stop rod having a lock rod insertion opening through which it can be inserted is used.
A method for assembling a heat exchanger for a cooling tower as described in the above. 9. The lateral groove has a U-shaped cross section or a U-shaped cross section, and a part of the support side plate is formed to project outward from the inside, and the engaging groove is formed on upper and lower walls of the lateral groove. Stop bar inserted,
The one provided with a through hole which can be hooked freely, wherein the bent portion of the heat exchange coil is inserted into the lateral groove from the longitudinal direction of the lateral groove and assembled.
6. The method for assembling a heat exchanger for use in a cooling tower described in 3, 4 or 5.