JPH07190659A - Heat exchanger with mesh-fin and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide a heat exchanger with mesh-fin which can be easily manufactured and has high performance and compact construction. CONSTITUTION:A plurality of net-shaped laminated bodies 5, 5... formed by laminating a plurality of net-shaped mesh-fins 4, 4... and by forming a plurality of recesses 8, 8...approximately parallelly, spaced apart a predetermined interval, are layered successively so as to sandwich a plurality of heating tubes 2, 2... between the adjacent bodies, and each of the laminated bodies 5, 5... and each of the tubes 2, 2... are joined together at the bottom of each of the recesses 8, 8... thereby to provide a heat exchanger 1. By this construction, thin tubes can be used as heating tubes 2, 2... so that effective heat exchanging area can be increased and hence high heat exchanging performance can be ensured, and when the exchanger 1 is mounted to an air conditioner, a tube plate of conventional type is not required, thereby facilitating the mounting work thereof and reducing work manhour, resulting in reduced cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger with mesh fins.

[0002]

2. Description of the Related Art In recent years, in air conditioners, due to demands for compactness and high performance, there is a tendency for heat exchangers to have good heat exchange efficiency and be compact. In order to meet such a demand, for example, as disclosed in Japanese Utility Model Laid-Open No. 61-192185, a heat exchanger with a mesh mesh fin in which a small-diameter heat transfer tube and a mesh fin are fixed and integrated is proposed. Has been done.

A conventional heat exchanger with mesh fins is manufactured as follows. That is, FIG.
As shown in (a), first, a plurality of mesh fins 51, 5
Net fin laminate 5 formed by laminating 1, ...
0 is placed on, for example, a flat processing table, and pressed from the upper surface side thereof, and has a semicircular cross section as shown in FIG. 12B, and extends in the plane direction of the mesh fin laminated body 50. A plurality of groove portions 53, 53, ... Are formed.

Next, as shown in FIG. 12 (b), a plurality of groove portions 53, 53, ... Are provided on both sides of the plurality of heat transfer tubes 52, 52 ,. The pair of mesh fin laminated bodies 50, 50 in which the ridges are formed are arranged in a state where the groove portions 53, 53 of the mesh fin laminated bodies 50, 50 face each other. Then, the pair of mesh fin laminated bodies 50, 5
0 for each of the recessed portions 53, 53, ...
2, ... While abutting against each other while fitting from the outside, the mesh fin laminated body 50 at the bottom of the groove portions 53, 53 ,.
, And the heat transfer tubes 2, 2, ... Are fixed together by using an appropriate fixing material such as a brazing material, and a pair of mesh fin laminated bodies 50, 50 and a plurality of heat transfer tubes 2 as shown in FIG. A module 55 is obtained by integrating 1, 2 ,.

Further, as shown in FIG. 12 (d), an appropriate number of modules 55 thus obtained are arranged at a predetermined interval from each other according to the required capacity of the heat exchanger. One heat exchanger 56 is obtained.

[0006]

However, the conventional heat exchanger 56 obtained by such a manufacturing method has the following problems.

First, in the manufacturing process, FIG.
When the pair of mesh fin laminated bodies 50, 50 are sandwiched from the outside of the plurality of heat transfer tubes 2 and fixed to each other as shown in (b), the mesh fin laminated body 50 is prevented from floating from the heat transfer tube 2. Although it is necessary to press the mesh fin laminates 50, 50 from both sides thereof, it is required to perform such work for the number of modules 55 required to obtain one heat exchanger 56, and the workability is poor, It also becomes one of the factors of cost increase.

In addition, a predetermined number of modules 55, 55, ...
When assembling the heat exchangers 56 into the air conditioner as one heat exchanger 56, for example, tube plates are arranged on both sides of each module 55, 55, ... And each module 55, 55 ,. There is also a problem that it is necessary to hold and fix the interval of, which requires a large number of assembling steps and time.

On the other hand, the heat exchanger 56 itself has a structure in which a plurality of modules 55, 55, ... Constituting the heat exchanger 56 are independent from each other and are simply connected by tube plates at both ends thereof. From each module 55,5
Each of the heat exchangers 56 has a low rigidity, and the heat exchanger 56 as a whole is disadvantageous in terms of strength. Further, as a method for solving such a problem, it is conceivable to increase the tube diameter of the heat transfer tube 52. However, in such a structure, as long as the outer dimensions of the heat exchanger 56 are constant,
It is not preferable because the effective heat transfer area of the heat transfer tube 52 of the heat exchanger as a whole is reduced, resulting in a decrease in heat exchange efficiency or an increase in weight.

Therefore, the present invention has been made as a proposal of a heat exchanger with mesh fins which is easy to manufacture, has high heat exchange performance, and is more compact, and a method for manufacturing the same.

[0011]

As a concrete means for solving such a problem in the invention of the present application, in the invention of claim 1, as shown in FIGS. 1 and 2, a plurality of mesh fins 4, .. are laminated, and a plurality of concave streak portions 8, 8, ... Having a semicircular cross-section and extending in the plane direction are formed substantially parallel to each other in the laminating direction at predetermined intervals. A plurality of mesh fin laminates 5, 5, ..., Each groove portion 8, 8 ... Of one mesh fin laminate 5 facing each other.
, And the other recessed rib portions 8 of the other mesh fin laminated body 5 are sequentially stacked with the plurality of heat transfer tubes 2, 2 ,. .. and the heat transfer tubes 2, 2, .. .. are joined to each other at the bottom portions of the heat transfer tubes 2, 8 ,.

According to a second aspect of the invention, as shown in FIGS. 1 and 2, in the heat exchanger with mesh fins according to the first aspect, the mesh fin laminated bodies 5, 5, ... The heat transfer tubes 2, 2, ..., Which are formed into a flat heat transfer tube group 3 are successively arranged in the stacking direction of the mesh fin laminates 5, 5 ,. There is.

According to a third aspect of the present invention, as illustrated in FIGS. 1 and 2, in the heat exchanger with mesh fins according to the second aspect, the flattening direction of each heat transfer tube group 3, 3 ,. .. is set in a direction substantially along the laminating direction of the mesh fin laminates 5, 5 ,.

In the invention according to claim 4, as illustrated in FIG. 5, in the heat exchanger with mesh fins according to claim 2, the flattening direction of each of the heat transfer tube groups 3, 3, ... .. has a predetermined inclination angle with respect to the laminating direction of the net fin laminates 5, 5 ,.

According to the invention of claim 5, as shown in FIG. 7, in the heat exchanger with mesh fins of claim 1, 2, 3 or 4, the mesh fin laminates 5, 5,
.. and the above-mentioned heat transfer tubes 2, 2, ..
, Is discontinuous in the axial direction of the heat transfer tubes 2, 2 ,.

In the invention according to claim 6, as shown in FIG. 8, in the heat exchanger with mesh fins according to claim 1, 2, 3 or 4, the mesh fin laminated bodies 5, 5 ,.
・ Notch hole 1 at the part corresponding to each of the above-mentioned concave stripes 8, 8, ...
It is characterized in that 1, 11, ...

In the invention according to claim 7, as shown in FIGS. 1 to 4, a plurality of mesh fins 4, 4, ... Are laminated and a semicircular cross-sectional shape is formed from both sides in the laminating direction. A plurality of concave streak portions 8, 8, ..., Which extend in the plane direction of the mochi are obtained by press molding to obtain a net fin laminate 5, and the plurality of net fin fin laminates 5, 5 ,. Article 8,
In the state in which the fixing material is arranged at the bottom of each of the mesh fins 5, 5, ..., The plurality of heat transfer tubes 2, 2 ,.・ The feature is that they are sequentially laminated while being fitted and fixed to each other.

[0018]

With each of the inventions of the present application, the following effects can be obtained by adopting such a configuration.

In the invention according to claim 1, a plurality of mesh fin laminated bodies 5, 5, ... And a plurality of heat transfer tubes 2, 2 ,. Since they are integrated, the strength performance of the heat exchanger 1 is high, and therefore, it becomes possible to use thin tubes as the heat transfer tubes 2, 2, ..., And the heat exchanger 1 is air-conditioned. Even when it is mounted on a machine, it does not require a tube plate as in the past, and the assembly work is easy.

In the second aspect of the invention, in addition to the above-described action, the heat transfer tubes 2, 2, ... Are successively flattened in the laminating direction of the mesh fin laminates 5, 5 ,. Since the heat transfer tube group 3 is formed into a shape, even when a circular tube is used as the heat transfer tube 2, the air ventilation resistance per the same heat exchange amount is low as in the case where the flat tube is used as the heat transfer tube. It can be suppressed if it can be suppressed.

In the invention according to claim 3, in addition to the above-described action, the flattening direction of each heat transfer tube group 3, 3 ,.
.. are set in a direction substantially along the laminating direction of the net fin laminates 5, 5, ... Since it is sufficient to form the rib portions 8, 8, ..., For example, it can be performed more efficiently than when the pressing positions are different on both sides, and the mesh fin laminated bodies 5, 5 constituting the heat exchanger 1 can be formed. Since ,, ... have the same shape, it is possible to share parts.

In the fourth aspect of the invention, in addition to the action described above, the flattening direction of each heat transfer tube group 3, 3, ... With respect to the laminating direction of each mesh fin laminated body 5, 5 ,. Since a predetermined inclination angle is provided, for example, the flattening direction of each of the heat transfer tube groups 3, 3, ... Is set according to the ventilation direction when the heat exchanger 1 is incorporated in an air conditioner. Thus, the heat exchanger 1 can be freely laid out with respect to the air conditioner, and the internal resistance can be further suppressed.

According to the invention of claim 5, above,
Or, in addition to the above-described action, the joint portion 10, which connects the reticulated fin laminates 5, 5, ... And the heat transfer tubes 2, 2 ,.
By making the heat transfer pipes 2, ... Discontinuous in the axial direction of the heat transfer pipes 2, 2, ..., For example, when the heat exchanger 1 is used as an evaporator, dew condensation occurs on the fin surface during cooling and the mesh fins 4
The water flowing down along the flow path is not blocked at the joint portion 10 and accumulated on the upper surface side of the heat transfer tube 2, and is easily discharged through the discontinuous portion of the joint portion 10. It will be.

In the invention according to claim 6, in the above,
Alternatively, in addition to the described action, the mesh fin laminate 5,
.. are formed in the portions corresponding to the respective concave streak portions 8, 8 ,.
In the first part, the heat transfer tube 2 is exposed, and therefore,
The water that has flowed down from above through the mesh fins 4 reaches the cutout hole 11 portion, and flows separately along the surface of the heat transfer tube 2 so that it is easily discharged.

In the invention according to claim 7, a plurality of net-like fins 4, 4, ... Are laminated, and a plurality of concave streak portions 8 having a semicircular cross-sectional shape and extending in the plane direction from both sides in the laminating direction. , 8, ... Are press-formed to form the mesh fin laminate 5, and then a fixing material is applied to the bottom of each of the plurality of mesh fin laminates 5, 5 ,. ., The mesh fin laminates 5, 5, ...
Since a plurality of heat transfer tubes 2, 2, ... Are fitted in the 8, ...
.. and the heat transfer tubes 2, 2, .. can be fixed to each other in a single operation. For example, for each of a plurality of modules constituting a heat exchanger as in the conventional case. Moreover, the workability is significantly improved as compared with the case where the work of fixing the mesh fin laminated body and the heat transfer tube is required.

[0026]

Therefore, according to the heat exchanger with mesh fins of the present invention, the following effects can be obtained, respectively.

(A) According to the heat exchanger with mesh fins according to claim 1, a plurality of mesh fin laminated bodies 5, 5, ...
, And a plurality of heat transfer tubes 2, 2, ... Are integrally joined to enhance the strength performance of the heat exchanger 1, so that each heat transfer tube 2, 2,
.. It becomes possible to use thin tubes as .., and higher heat exchange performance is ensured by expansion of the effective heat exchange area, and the conventional tube plate is required when assembling the heat exchanger 1 to the air conditioner. As a result, the assembling work is facilitated, and the cost can be reduced by reducing the number of man-hours.

(B) According to the heat exchanger with mesh fins of the second aspect, in addition to the effect described in the above (a), the heat transfer tubes 2, 2, ... Even if the circular tube is used, the air resistance can be suppressed to be low as in the case where the flat tube is used, so that the heat exchange performance can be further improved.

(C) According to the heat exchanger with mesh fins of the third aspect, in addition to the effect of the above (b), the mesh fins are laminated in the flat direction of each heat transfer tube group 3, 3 ,. Body 5,
By setting the direction of 5, ...
The cost can be reduced by facilitating the processing at the time of manufacturing the reticulated fin laminate 5, and the cost can also be reduced by making the reticulated fin laminates 5, 5, .. It is what is done.

(D) According to the heat exchanger with mesh fins of the fourth aspect, in addition to the effect of the above (b), the mesh fins are laminated in the flat direction of each heat transfer tube group 3, 3 ,. Body 5,
By providing a predetermined inclination angle with respect to the stacking direction of 5, ..., It is possible to suppress the internal resistance when the heat exchanger 1 is incorporated in an air conditioner and achieve high heat exchange performance, On the other hand, since the heat exchanger 1 can be freely laid out, the effect of facilitating the design of the air conditioner can be obtained.

(E) According to the heat exchanger with mesh fins according to claims 5 and 6, in addition to the effect described in the above (a), (b), (c) or (d), each mesh fin laminated layer .. and the heat transfer pipes 2, 2, .. .. and the joints 10, 10, ..., Which are discontinuous, or the groove portions of the mesh fin laminate 5, 5 ,. By forming the notch holes 11, 11, ... At the portions corresponding to 8, 8, ..., The discharge of the water flowing down through the mesh fins 4 is promoted. Two
It is possible to prevent the heat transfer from being hindered as much as possible by staying adhered to the like and to achieve high heat exchange performance.

(F) According to the method for manufacturing a heat exchanger with mesh fins of claim 7, each mesh fin laminated body 5,
.. and the heat transfer tubes 2, 2, ... Can be fixed in a single operation, so that, for example, a mesh fin laminated body is provided for each of a plurality of modules constituting a heat exchanger as in the conventional case. Compared with the case where the work of fixing to the heat transfer tube is required, the workability is remarkably improved, and the cost can be surely reduced by significantly reducing the number of work steps.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat exchanger with mesh fins according to the present invention will be specifically described below with reference to the accompanying drawings.

First Embodiment FIG. 1 shows a heat exchanger 1 according to the first embodiment of the present invention. The heat exchanger 1 is formed by laminating a heat transfer tube group 3, 3, ..., Which will be described later, which is composed of a plurality of heat transfer tubes 2, 2 ,. And a net-like fin group 7 described later. Here, first, the heat exchanger 1 will be described with reference to FIG. 2 according to its manufacturing process.

First, a plurality of net-like fins 4, 4, ... Having a predetermined size are stacked in the plane direction, and face the stacked net-like fins 4, 4, ... In the stacking direction. By pressing from both sides to the position,
.. are formed in parallel with each other at a predetermined interval to form a net-like fin laminate 5. The diameter of the groove 8 is set to be substantially the same as the diameter of the heat transfer tube 2.

Next, the plurality of mesh fin laminated bodies 5, 5, ... Formed in this way are respectively placed at the positions corresponding to the respective groove portions 8, 8 ,. . Are arranged, and these plural rows of heat transfer tubes 2, 2, ... Are laminated in a state of being sandwiched by mesh fin laminates 5, 5 ,. In this case, a brazing material is arranged along the groove direction at the bottom of each of the recessed strip portions 8, 8, ..., In which the heat transfer tubes 2, 2 ,.

Next, a plurality of reticulated fin laminates 5, 5, ..., Which are alternately laminated in this way, and a plurality of rows of heat transfer tubes 2, 2 ,. Appropriate pressing force is applied from both ends in the stacking direction to each mesh fin laminate 5, 5,
····································································· As shown in FIG. 1, a heat exchanger 1 in which the mesh fin laminated bodies 5, 5, ... Are integrally joined and fixed to the heat transfer tubes 2, 2 ,.
Is what you get.

When the manufacturing of the heat exchanger 1 is completed, as shown in FIG. 1, the mesh fin laminates 5, 5, ...
The heat transfer tubes 2,2, ... corresponding to the marked recesses 8,8 ,.
· Form flat heat transfer tube groups 3, 3, ... Lined up in a row in the mesh fin stacking direction. Therefore, an intermediate position between the heat transfer tube groups 3, 3, ... Arranged in parallel with the predetermined interval serves as an air passage. In addition, the mesh fin laminates 5,
The net-like fins 4, 4, ... Form a net-like fin group 7 by being integrally laminated. That is, this heat exchanger 1 is composed of a plurality of heat transfer tubes 2, 2, ...
, And the mesh fin group 7 are integrally formed.

When such a manufacturing method of the heat exchanger 1 is adopted, the bottoms of the respective groove portions 8,8, ... Of the plurality of mesh fin laminates 5,5 ,. While fitting the brazing material to the braided fins 5, 5, ..., While fitting the plurality of heat transfer tubes 2, 2 ,. Since they are sequentially laminated and fixed to each other, the mesh fin laminates 5, 5, ...
2, ... Can be fixed in one operation, for example, when it is necessary to fix the mesh fin laminated body and the heat transfer tube for each of a plurality of modules constituting the heat exchanger as in the conventional case. Compared with the above, the workability is remarkably improved, and the cost can be surely reduced by significantly reducing the number of work steps.

In the heat exchanger 1 obtained by the above manufacturing method, a plurality of mesh fin laminated bodies 5, 5,
.. and the plurality of heat transfer tubes 2, 2, ..., which are fixedly arranged in a sandwiched state between them, are integrated with each other,
Since the heat exchanger 1 has high strength performance, it is possible to use thin tubes as the heat transfer tubes 2, 2, ..., For example, when the size of the heat exchanger 1 is fixed, Since the diameter of the heat pipes 2, 2, ... Is small, the effective heat exchange area is expanded and higher heat exchange performance is ensured.
When assembling the heat exchanger 1 into the air conditioner, it is not necessary to provide a tube plate for keeping the distance between the modules and fixing the modules as in the conventional case, so that the assembling work of the heat exchanger 1 is facilitated, and the work is performed accordingly. The number of man-hours is reduced, and cost reduction can be expected.

Further, the heat transfer tubes 2, 2, ... Of the heat exchanger 1
Are arranged in a row to form a flat heat transfer tube group 3, 3, ..., Even when a circular tube is used as the heat transfer tube 2, it is the same as when a flat tube is used as the heat transfer tube. In addition, it is possible to suppress the air ventilation resistance per the same heat exchange amount to be low, and a higher level of heat exchange performance is secured.

In particular, when the heat exchanger 1 is used as an evaporator of an air conditioner, the water content in the air is condensed on the mesh fin surface during the cooling operation to form a water drop, which flows down through the mesh fin 4. To do. In this case, when a flat tube is used as the heat transfer tube 2, it is conceivable that water will be retained on the upper surface side of the flat tube to narrow the ventilation area and increase the ventilation resistance. Although the heat transfer tube group 3 has a flat tube shape, the heat transfer tube 2 is circular.
, And the mesh fins 4 are always present between the heat transfer tubes 2, 2, ..., Therefore, for example, the heat transfer tube 2 and the concave streak portion 8 of the mesh fin laminate 5 are Even if there is a fixed layer between the bottom and the bottom, a pair of adjacent heat transfer tubes 2,
Since a water passage is always formed between the two, the water does not accumulate on the upper surface side of the heat transfer tube group 3 to increase the ventilation resistance, and a high level heat exchange performance can be obtained. It is a thing.

In this case, as in the heat exchanger 1 shown in FIG. 3, the joint portion 1 provided along each heat transfer tube 2, 2 ,.
If 0, 10, ... Are discontinuous in their extension direction, the heat transfer tubes 2, 2 ,.
Since the drainage passage is reliably formed by the mesh fins 4, the drainage performance is further enhanced, and higher heat exchange performance can be expected.

Further, from the same viewpoint, as shown in FIG. 4, the above-mentioned joint portions 10, 1 of the mesh fin laminates 5, 5, ...
If notch-shaped notch holes 11, 11, ... Are formed at predetermined intervals at positions corresponding to 0 ,.
The drainage passage is surely formed in the portion, and the water reaching the top of the heat transfer tube 2 flows into the left and right along the pipe shape separately in the cutout hole 11 portion. Even if the heat transfer pipes 2, 2, ... Are horizontal when assembled in the air conditioner, the water is drained to each person.

Further, as in this embodiment, each heat transfer tube group 3, 3,
.., when the flat direction is parallel to the thickness direction of the heat exchanger 1 (that is, the laminating direction of the net fin laminated body 5), the net fin laminated layers constituting the heat exchanger 1 Since all the bodies 5, 5, ... Have the same shape, the net-fin laminated body 5 is processed by using the same device and does not require any work, as compared with the case where the bodies 5, 5 ,. This can be easily performed without changing the setup, and it is not necessary to consider the arrangement position at the time of assembling, so that the number of working steps can be further reduced and the parts can be shared.

In the heat exchanger 1 of this embodiment,
As a result of commonizing the net-like fin laminates 5, 5, ...
As shown in FIG. 5, concave streak portions 8, 8, ... Are formed on both sides of the mesh fin group 7, respectively. In this embodiment, the concave streak portions 8, 8 ,. The heat tubes 2, 2, ... Are not arranged. However, depending on the required heat exchange capacity, the heat transfer pipes 2, 2,
.. of course can be provided.

Second Embodiment FIG. 5 shows a heat exchanger 1 according to a second embodiment of the present invention. The heat exchanger 1 of the second embodiment has the same basic structure as that of the heat exchanger 1 of the first embodiment, and the manufacture thereof is also the same as shown in FIG. However, the difference from the first embodiment is that, as shown in FIG. 6, the heat exchanger 1 does not have the concave streaks 8, 8, ... As shown in
The pair of reticulated fin laminates 5, 5 located on the outermost side has a structure in which the concave streak portions 8, 8, ... Are formed from only one side in the thickness direction.

It is needless to say that the same effects as those of the first embodiment can be expected in this embodiment.

Third Embodiment FIG. 7 shows a heat exchanger 1 according to a third embodiment of the present invention. In this embodiment, the heat transfer tube groups 3, 3, ... Are formed along the laminating direction of the mesh fin laminates 5, 5 ,. As described above, while the concave streak portions 8, 8, ... Of the mesh fin laminates 5, 5, ... Are formed, in this embodiment, the heat transfer tube groups 3, 3 ,. The flat direction of is set so as to have a predetermined inclination angle with respect to the stacking direction.

In the case of such a configuration, for example, as shown in FIG.
When arranging the heat exchanger 1 in the air conditioner 15 as shown in FIG. 3, the direction of each of the heat transfer tube groups 3, 3, ... Is changed from the suction port 17 to the blower port 18 via the fan 16. By setting in the flow direction of A, it becomes possible to further reduce the in-machine resistance and obtain high heat exchange performance. On the other hand, this means that from the viewpoint of the design of the air conditioner 15, the directions of the heat transfer tube groups 3, 3, ...
This means that after the layout of the heat exchanger 1 for the air conditioner 15 is decided, it can be decided ex post facto taking into consideration the air flow path, and the merit that the degree of freedom in designing the air conditioner 15 is improved accordingly. can get.

Fourth Embodiment FIG. 9 shows a heat exchanger 1 according to a fourth embodiment of the present invention. The heat exchanger 1 of this embodiment has the same basic structure as that of the first to third embodiments. The difference from these is that the heat exchanger 1 of each of the above embodiments is formed in a flat plate shape. In contrast to this, it is a point that this is curved and formed in an arc plate shape. That is, the plurality of mesh fin laminated bodies 5, 5, ... Are curved and formed in an arc plate shape having a predetermined curvature in the laminating direction (thickness direction) of the mesh fins 4, 4 ,. The heat transfer tubes 2, 2, ... Are sandwiched between the mesh fin laminates 5, 5 ,. Therefore, the heat transfer tube groups 3, 3, ... Which are formed by connecting the heat transfer tubes 2, 2, ... Are arranged radially at a predetermined interval in the circumferential direction.

As described above, since the heat exchanger 1 can be formed by arbitrarily bending it in the thickness direction, the heat exchanger 1 can be formed.
The degree of freedom in layout when assembling the air conditioner to the air conditioner is improved. Further, for example, the dimension of the heat exchanger 1 in the width direction is set to the flat plate heat exchanger 1 as in each of the above embodiments.
In the case of setting the same as in the case of (1), since the actual length is large due to the curve, the heat transfer area is expanded and the heat exchange performance is improved. In other words, if the actual lengths of the heat exchangers 1 are set to be the same,
By curving this, it is possible to reduce the dimension in the width direction. Therefore, it is possible to make it compact and further improve the degree of freedom in layout of the air conditioner. .

In the heat exchanger 1 of this embodiment,
At the time of its manufacture, in addition to the press work for forming the above-mentioned concave streak portions 8, 8, ..., A curve forming process is necessary. This curve forming process can be performed simultaneously with the press process. In terms of work man-hours, there is no difference from the manufacture of the flat plate heat exchanger 1 as in the above-mentioned embodiments.

Fifth Embodiment FIG. 10 shows a heat exchanger 1 according to a fifth embodiment of the present invention.
Is shown. This embodiment is also based on the same idea as the fourth embodiment, and is constructed by bending the heat exchanger 1 in a wave shape in the thickness direction in order to expand the heat transfer area. Is. Therefore, the heat exchanger 1 of this embodiment
In, of course, the same effect as that of the fourth embodiment can be expected.

In the manufacturing of the heat exchanger 1 of this embodiment as well, as in the case of the fourth embodiment, the corrugated bending process is performed simultaneously with the press process for forming the concave streak portion 8. Sixth Embodiment FIG. 11 shows a heat exchanger 1 according to a sixth embodiment of the present invention. The heat exchanger 1 of this embodiment is the same as the fourth embodiment.
As in the fifth embodiment, the heat transfer performance is improved by increasing the heat transfer area and the layout flexibility of the air conditioner is improved. However, this embodiment is different from the fourth and fifth embodiments in that the mesh fin group 7 is curved or bent while the heat transfer tubes 2, 2, ... On the other hand, the bending direction of each heat transfer tube 2,
The heat transfer tubes 2, 2, ... And the net-shaped fin group 7 are integrally bent in the axial direction of 2, ... Is different from Therefore, it goes without saying that the same effects as those of the above-mentioned fourth and fifth embodiments can be obtained also in this embodiment.

[Brief description of drawings]

FIG. 1 is a side view of a heat exchanger according to a first embodiment of the present invention.

FIG. 2 is an explanatory view of a manufacturing process of the heat exchanger shown in FIG.

FIG. 3 is a perspective view showing a modified example of the heat exchanger shown in FIG.

FIG. 4 is a perspective view showing a modified example of the heat exchanger shown in FIG.

FIG. 5 is a side view of a heat exchanger with mesh fins according to a second embodiment of the present invention.

FIG. 6 is an explanatory view of a manufacturing process of the heat exchanger shown in FIG.

FIG. 7 is a side view of a heat exchanger according to a third embodiment of the present invention.

FIG. 8 is a layout structural diagram of the heat exchanger shown in FIG. 7 in an air conditioner.

FIG. 9 is a plan view of a heat exchanger according to a fourth embodiment of the present invention.

FIG. 10 is a plan view of a heat exchanger according to a fifth embodiment of the present invention.

FIG. 11 is a perspective view of a heat exchanger according to a sixth embodiment of the present invention.

FIG. 12 is an explanatory view of the manufacturing process of the conventional heat exchanger.

[Explanation of symbols]

1 is a heat exchanger, 2 is a heat transfer tube, 3 is a group of heat transfer tubes, 4 is a mesh fin, 5 is a mesh fin laminated body, 7 is a mesh fin group, 8 is a concave portion, 10 is a joint, 11 is a notch hole , 12 is a discontinuous portion, 15 is an air conditioner, 16 is a fan, 17 is a suction port, 18
Is an outlet.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiro Kawabata 1304 Kanaoka-machi, Sakai City, Osaka Daikin Industries, Ltd.Kanaoka Plant, Sakai Manufacturing Co., Ltd. (72) Junichiro Tanaka 1304, Kanaoka-cho, Sakai City, Osaka Daikin Industries, Ltd. Sakai Plant Kanaoka Factory

Claims (7)

[Claims] 1. A plurality of reticulated fins (4), (4), ... Laminated, and a plurality of recessed portions extending in the plane direction having semicircular cross-sectional shapes on both side faces in the laminating direction. (8), (8),
.. A plurality of mesh fin laminated bodies (5), (5), ..., which are formed substantially parallel to each other with a predetermined interval, are concave portions of one mesh fin laminated body (5) facing each other.
(8), (8), ... And the plurality of heat transfer tubes (2), (2), .. with the respective groove portions (8), (8), ... of the other mesh fin laminated body (5)・ Sequentially sandwiched from both sides, and at the bottom of each groove (8), (8), ..., each mesh fin laminate (5), (5) ,. Each heat transfer tube (2), (2),
..A heat exchanger with mesh fins, characterized in that and are joined to each other. 2. The heat transfer pipe (2) according to claim 1, wherein the mesh fin laminates (5), (5) ,.
And (2), ... constitute a flat heat transfer tube group (3) successively and successively in the laminating direction of the mesh fin laminates (5), (5) ,. A heat exchanger with mesh fins. 3. The heat transfer tube group according to claim 2,
The flat directions of (3), (3) ,.
A heat exchanger with mesh fins, which is set in a direction substantially along the stacking direction of (5), (5) ,. 4. The heat transfer tube group according to claim 2.
The flat directions of (3), (3) ,.
A heat exchanger with mesh fins having a predetermined inclination angle with respect to the stacking direction of (5), (5) ,. 5. The reticulated fin laminate (5), (5), ... And each heat transfer tube as claimed in claim 1, 2, 3 or 4.
The joints (10), (10), ... with (2), (2), ... shall be discontinuous in the axial direction of the heat transfer tubes (2), (2) ,. A heat exchanger with mesh fins. 6. The grooved fin portion (8) according to claim 1, 2, 3 or 4, wherein the mesh fin laminates (5), (5) ,.
A heat exchanger with mesh fins, characterized in that cutout holes (11), (11), ... Are formed in the portions corresponding to (8) ,. 7. A plurality of recessed streak portions (8) having a semicircular cross-sectional shape and extending in a plane direction from both sides in the stacking direction by stacking a plurality of mesh fins (4), (4) ,. , (8), ... are press-molded to obtain a mesh fin laminate (5), and the plurality of mesh fin laminates (5), (5) ,. 8), (8), ... In the state where a fixing material is arranged at the bottom of each of the mesh fin laminated bodies (5), (5), ... A method for manufacturing a heat exchanger with mesh fins, characterized in that a plurality of heat transfer tubes (2), (2), ... Are fitted inside one another and are sequentially laminated and fixed to each other.