JPH0665784U - Heat exchanger - Google Patents

Abstract

(57) [Summary] [Object] The present invention aims to provide a heat exchanger that can be easily manufactured. [Structure] A heat exchanger 1 includes a group of straight pipes in which a plurality of cylindrical straight pipes 10 open at both ends are arranged in parallel, and a plurality of straight pipes in this group are arranged in parallel, and one open end of the straight pipe 10 is formed. First header 11 connecting each other
And a second header that connects the other open ends of the straight pipe 10 to each other.
And the straight pipe of the first header 11 and the second header 12 on the surface opposite to the connection side with the straight pipe 10 of the first header 11 and provided at substantially the center of the surface. And a second connection port provided on the opposite side to the connection side with the second connection port provided at substantially the center of the surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger, and more particularly to a heat exchanger that can be easily manufactured.

[0002]

[Prior art]

 Conventionally, a heat exchanger bends a straight pipe whose both ends are open in a U shape, arranges a plurality of U-shaped pipes in parallel, and welds the open ends with a member called a U-shaped return bend. Is configured.

[0003]

[Problems to be solved by the device]

 However, in the conventional heat exchanger, the open ends must be individually welded by a member called a U-shaped return bend, and if the pipe diameter is different, a U-shaped return bend must be made to match them. However, there is a problem that the work is very troublesome and cannot be easily manufactured.

An object of the present invention is to provide a heat exchanger that is easy to manufacture.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, in the heat exchanger of the present invention, a group of straight pipes in which a plurality of cylindrical straight pipes whose both ends are open are arranged in parallel, and a plurality of straight pipes in this group are arranged in parallel. A first header that connects one open end of the straight pipe to each other, and a second header that connects the other open ends of the straight pipe to each other, and a connecting side of the first header to the straight pipe A surface different from that of the first connection port provided at the substantially center of the surface and a connection side of the second header with the straight pipe, and provided at the substantially center of the surface. And a second connection port.

In the heat exchanger, the first header and the second header have a rectangular parallelepiped shape, and one surface of the rectangular parallelepiped shape is an installation surface.

Further, in the heat exchanger of the present invention, at least one row of one group of straight pipes in which a plurality of cylindrical straight pipes whose both ends are open are arranged in parallel, and a plurality of this group of straight pipes are arranged in parallel. A first header connecting one open end of the straight pipe, and a second header connecting a plurality of the straight pipes of the group in parallel and connecting the other open ends of the straight pipe, The first header and the above-mentioned second header are divided into group units of the straight pipes of the first group such that the fluid flowing in the straight pipes of the first group flows in a meandering manner, and the first headers are divided. The first connection port is provided in the header at one end of the one side, and the second connection port is provided in the header at the end opposite to the one side of the divided second header. .

Further, in the heat exchanger of the present invention, at least one row of one group of straight pipes having a plurality of cylindrical straight pipes open at both ends and a plurality of the straight pipes of one group are arranged side by side. A first header connecting one open end of the straight pipe, and a second header connecting a plurality of the straight pipes of the group in parallel and connecting the other open ends of the straight pipe, The first header and the above-mentioned second header are divided into group units of the straight pipes of the first group such that the fluid flowing in the straight pipes of the first group flows in a meandering manner, and the first headers are divided. The first connection port is provided in the header at one end of the one side, and the second connection port is provided in the header at the end opposite to the one side of the divided second header. The first header and the second header are separated by a partition wall so that the fluid is It is designed to meander in a straight pipe of one group to flow.

Further, in the above heat exchanger, the first header and the second header have a rectangular parallelepiped shape, and the divided first header and the second header also have a rectangular parallelepiped shape, and the rectangular parallelepiped shape One side is the installation surface.

[0010]

[Action]

 In the heat exchanger configured as described above, a plurality of cylindrical straight pipes having open ends are arranged in parallel, and the open ends of the straight pipes are connected to each other by the first header and the second header.

The fluid that has flowed into the first header flows into the straight pipes that are arranged in parallel, exchanges heat with the fluid outside the straight pipe, and then flows into the second header.

In particular, the shapes of the first header and the second header can be used as a rectangular parallelepiped, and one surface of the rectangular parallelepiped shape can be used as an installation surface.

Further, since the first header and the second header are divided for each group of straight pipes in one group, the fluid flowing in the straight pipes in one group meanders and flows.

Furthermore, since the inside of the divided first header and the inside of the second header are partitioned by the partition wall, the fluid flows meandering in the group of straight pipes.

[0015]

【Example】

 A heat exchanger according to an embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, A'is a heat exchanger and heat exchanger A'is a heat exchanger in the center of the inside. 1, a side wall 2 is provided with a combustor 3.

The side wall 4 facing the side wall 2 has an exhaust pipe 5, the side wall 6 has an inlet pipe 7 of the heat exchanger 1, and the side wall 8 facing the side wall 6 has an outlet pipe 9 of the heat exchanger 1. Each is connected.

Although not shown in FIGS. 1 and 2, similarly to the description of FIG. 3, the inflow pipe 7 is a support fitting 7 ′ attached to the side wall 4, and the outflow pipe 9 is a side wall. Each of them is freely attached to the support metal fitting 9'attached to the No. 4 (the same applies to the examples described later).

This is because the temperature of the fluid (for example, air) in the outflow pipe 9 becomes about 400 ° C. to about 500 ° C., and when the inflow pipe 7 and the outflow pipe 9 are fixed to the side wall 4, thermal expansion (or heat contraction) occurs. ), A crack is generated in the side wall 4, so that the side wall 4 is attached with a gap.

The heat exchanger 1 is roughly composed of a cylindrical straight pipe 10, ..., 10 having both ends open, and a group of straight pipes (a straight pipe of one group) in which a plurality of the straight pipes 10 are arranged in parallel. As shown in FIG. 2, for example, four straight pipes 10 are arranged in a vertical direction in parallel with each other.) A first header 11 for connecting one open end to another straight pipe 10 and another straight pipe 10 And a second header 12 connecting the open ends of the.

The straight pipes of the first group are fixed to the first header 11 and the second header 12 by welding or the like.

Then, the inflow pipe 7 is attached to a first connection port which is a surface (for example, a surface on the opposite side) different from the connection side of the first header 11 with the straight pipe 10 and which is provided substantially in the center of the surface. However, the outflow pipe 9 is provided on the second connection port provided on the surface of the second header 12 different from the connection side with the straight pipe 10 (for example, the surface on the opposite side) and provided at the substantially center of the surface. They are connected by welding or the like.

The first header 11 and the second header 12 have a rectangular parallelepiped shape, and one surface (11a, 12a in the figure) of the rectangular parallelepiped is the installation surface, so that the heat exchanger 1 can be easily installed. Become.

Therefore, in the heat exchange device A ′, the high temperature combustion gas generated by the combustor 3 and the fluid (eg, air) flowing in the heat exchanger 1 exchange heat with each other, and the temperature higher than that of the outflow pipe 9 is reached. Fluid (for example, air) is obtained.

In the heat exchanger 1 shown in FIG. 2, the air flowing into the heat exchanger 1 through the inflow pipe 7 is targeted for heat exchange only over the distance of the length of the straight pipe 10, and the heat exchange efficiency is improved. Is bad.

In the heat exchanger 1 of the following embodiment (shown in FIGS. 3 to 5), a group of straight pipes (reference numeral 10a is 4 rows, 10b is 4 rows, 10c is 2 rows) A plurality of cylindrical straight pipes 10 with both ends open are arranged side by side. In FIG. 5, one group of straight tubes has four rows (10a), four rows (10b), and two rows (10c), but at least one or more rows may be used.

Then, the first header 11 and the second header 12 are divided so as to correspond to the group unit of the straight pipes of one group so that the fluid flowing in the straight pipes of the one group meanders and flows.

That is, the first header 11 is a header 11a corresponding to four rows, a header 11b corresponding to four rows, a header 11c corresponding to two rows, and a second header 12 is two rows. It is divided into a plurality of headers 12a corresponding to 4 columns, a header 12b corresponding to 4 columns, and a header 12c corresponding to 4 columns (see FIG. 4).

As a result, in the heat exchanger 1 shown in FIGS. 3 to 5, as shown in FIG. 4, the air flowing into the inflow pipe 7 is divided into one group via the divided header 11c and the open end. The headers 12c, 11b, 12b, 11a, and 12a flow alternately in the straight pipe, and the fluid (for example, air) meanders and flows. The fluid (for example, air) flowing in the meandering heat exchanger 1 can be increased in distance to improve the heat exchange efficiency.

In the above-described embodiment, the air that has flowed into one group of straight pipes [for example, four rows (10b), four rows (10c), two rows (10c) see FIG. 5] meanders, It did not meander in the straight pipe of Group 1.

In the embodiment described below, as shown in FIGS. 6 to 8, the first header 11 is divided into headers (11a, 11b, 11c) and the second header 12 is divided into headers (12a). , 12b, 12c) are further partitioned by a partition wall H so that a fluid (for example, air) can meander and flow in a group of straight pipes.

The header 11a is a T-shaped partition wall H for V chambers, W chambers and Y chambers, the header 11c is a partition wall H for chambers A and C, and the header 12a is a partition wall H for an X chamber. , And the header 12c is partitioned by a T-shaped partition wall H into chambers B, D, and E, respectively.

That is, as shown in FIG. 8, the fluid (for example, air) that has flowed in through the inflow pipe 7 enters the chamber A of the divided header 11c and the three straight pipes 10 (see FIG. 8). Enter the room B of the header 12c that has been divided through the code.

The fluid (for example, air) that has entered the chamber B descends (from the reference numeral shown in FIG. 8) to the three straight pipes 10 (reference numeral shown in FIG. 8) from the other open end of the straight pipe 10. Pass through and enter Room C in Header 11c.

The fluid (for example, air) that has entered the chamber C descends (from the reference numeral in FIG. 8) to the three straight pipes 10 (reference numeral in FIG. 8) from one open end of the straight pipe 10. Pass through and enter Room D on Header 12c.

As described above, the fluid (for example, air) passes through the first head 11 and the second head 12 in an alternating manner ... E chamber, ... W chamber, ... X chamber, ... ..Y chamber, ... Z chamber and flows to the outflow pipe 9.

As a result, in the heat exchanger 1 shown in FIGS. 6 to 8, the air flowing into the inflow pipe 7 is divided into partition walls H that partition the divided headers 11 and 12, as shown in FIG. Accordingly, the fluid (eg, air) flows in the straight pipe of one group in a meandering manner, and the distance of the fluid (eg, air) flowing in the heat exchanger 1 can be increased to improve the heat exchange efficiency. You can plan.

It should be noted that the heat exchanger 1 shown in FIGS. 3 to 5 and the first header 11 and the second header 12 of the heat exchanger 1 shown in FIGS. Since the shape is also a rectangular parallelepiped and one surface of the shape of the rectangular parallelepiped is an installation surface, the heat exchanger can be made easy.

Although not shown, a spiral plate may be inserted into the straight pipe 10 to cause a turbulent flow in the fluid itself flowing in the straight pipe 10.

[0039]

[Effect of device]

 In the heat exchanger of the present invention, a group of straight pipes having a plurality of cylindrical straight pipes open at both ends and a plurality of straight pipes of this group are arranged side by side, and one open end of the straight pipes is connected to each other. A first header for connecting the straight pipe and a second header for connecting the other open ends of the straight pipe to each other, and the face is a face different from the connection side of the first header with the straight pipe. A first connection port provided substantially in the center of the second header and a second connection port provided at the substantially different center of the surface of the second header from the connection side with the straight pipe. Therefore, it is possible to obtain a heat exchanger that can be easily manufactured without using a U-shaped return bend as in the past, and open ends of the straight pipes are connected to each other by the first header and the second header. Since they are connected to each other, it is possible to improve the strength of the heat exchanger.

Further, in the above heat exchanger, the shape of the first header and the second header is a rectangular parallelepiped, and one surface of the rectangular parallelepiped shape is an installation surface. Therefore, the heat exchanger can be facilitated. You can

Further, in the heat exchanger of the present invention, at least one row of straight pipes having at least one row in which a plurality of straight pipes having a cylindrical shape with both ends opened are arranged in parallel, and a plurality of straight pipes in this group are arranged in parallel. A first header connecting one open end of the straight pipe, and a second header connecting a plurality of the straight pipes of the group in parallel and connecting the other open ends of the straight pipe, The first header and the above-mentioned second header are divided into group units of the straight pipes of the first group such that the fluid flowing in the straight pipes of the first group flows in a meandering manner, and the first headers are divided. The first connection port is provided in the header at one end of the one side, and the second connection port is provided in the header at the end opposite to the one side of the divided second header. Therefore, a heat exchanger that can be easily manufactured without using the conventional U-shaped return bend Since the open ends of the straight pipes are connected to each other by the first header and the second header, respectively, the strength of the heat exchanger can be improved, and the first header and the second header can be improved. Since one surface of the rectangular parallelepiped shape of the header can be used as the installation surface, the heat exchanger can be installed easily.

Further, in the heat exchanger of the present invention, at least one row of one group of straight pipes having a plurality of cylindrical straight pipes open at both ends, and a plurality of this group of straight pipes are arranged side by side. A first header connecting one open end of the straight pipe, and a second header connecting a plurality of the straight pipes of the group in parallel and connecting the other open ends of the straight pipe, The first header and the above-mentioned second header are divided into group units of the straight pipes of the first group such that the fluid flowing in the straight pipes of the first group flows in a meandering manner, and the first headers are divided. The first connection port is provided in the header at one end of the one side, and the second connection port is provided in the header at the end opposite to the one side of the divided second header. The first header and the second header are separated by a partition wall so that the fluid is Since it is designed to meander in a straight pipe of one group, it is possible to obtain a heat exchanger that can be easily manufactured without using a U-shaped return bend as in the past, and at the same time Since the open ends are connected to each other by the first header and the second header, it is possible to improve the strength of the heat exchanger, and moreover, the flow of the fluid flowing in the straight pipe through the opening of the straight pipe opened in the header. It is possible to improve the efficiency of the heat exchanger by partitioning the first header inner partition wall and the second header inner partition wall according to the group, and increasing the distance of the fluid flowing in the straight pipe.

Further, in the above heat exchanger, the first header and the second header have a rectangular parallelepiped shape, and the divided first header and the second header also have a rectangular parallelepiped shape, and the rectangular parallelepiped shape Since the one side is the installation surface, the heat exchanger can be easily made.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a heat exchange device incorporating a heat exchanger according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of a heat exchanger incorporated in the heat exchange device shown in FIG.

3 to 5 show a heat exchanger according to another embodiment of the present invention, and FIG. 3 is a schematic plan view of a heat exchanger incorporating the heat exchanger. It is a figure.

FIG. 4 is a schematic plan view of a heat exchanger incorporated in the heat exchange device shown in FIG.

FIG. 5 is a schematic side view of the heat exchanger shown in FIG. 4.

6 shows a heat exchanger according to another embodiment of the present invention, and FIG. 6 is an explanatory view for schematically explaining the heat exchanger. is there.

FIG. 7 is a schematic perspective view of the heat exchanger for showing the inside of the header of the heat exchanger shown in FIG. 6;

FIG. 8 is an explanatory diagram for explaining the flow of fluid in the pipe of the heat exchanger shown in FIG. 7.

[Explanation of symbols]

 1 heat exchanger 10 straight pipe 11 first header 12 second header

Claims (5)

[Scope of utility model registration request] 1. A group of straight pipes in which a plurality of tubular straight pipes having open ends are arranged in parallel, and a plurality of straight pipes in this group are arranged in parallel to connect one open end of the straight pipes. 1 header and a second header that connects the other open ends of the straight pipe to each other, and is on a surface different from the connection side of the first header with the straight pipe and in the approximate center of the surface. A first connection port provided and a second connection port provided on a surface different from the connection side of the second header with the straight pipe and provided substantially in the center of the surface. Heat exchanger to. 2. The heat exchanger according to claim 1, wherein each of the first header and the second header has a rectangular parallelepiped shape, and one surface of the rectangular parallelepiped shape is an installation surface. 3. A group of at least one row of straight pipes in which a plurality of cylindrical straight pipes having open ends are arranged in parallel, and a plurality of straight pipes in this group are arranged in parallel, and one open end of the straight pipes is arranged. A first header that connects the two to each other; and a second header that installs a plurality of the straight pipes of the first group side by side and connects the other open ends of the straight pipes to each other, the first header and the second header Of the first group of straight pipes so that the fluid flowing in the straight pipes of the first group meanders and flows, and the header is divided into headers on one side of the divided first headers. A heat exchanger characterized in that the first connection port is provided with a second connection port on a header at an end portion on the side opposite to the one side of the divided second header, respectively. 4. A group of straight pipes in at least one row in which a plurality of tubular straight pipes having open ends are arranged in parallel, and a plurality of straight pipes in this group are arranged in parallel and one open end of the straight pipes. A first header that connects the two to each other; and a second header that installs a plurality of the straight pipes of the first group side by side and connects the other open ends of the straight pipes to each other, the first header and the second header Of the first group of straight pipes so that the fluid flowing in the straight pipes of the first group meanders and flows, and the header is divided into headers on one side of the divided first headers. The first connection port is provided with a second connection port in the header at the end opposite to the one side of the divided second header, and the divided first header and the second connection port are further provided. The inside of the header was partitioned by a partition wall to allow the fluid to meander through the straight pipe of the first group. A heat exchanger characterized by the above. 5. The first header and the second header have a rectangular parallelepiped shape, and the divided first and second headers also have a rectangular parallelepiped shape, and one surface of the rectangular parallelepiped shape is an installation surface. Item 3. The heat exchanger according to Item 3 or 4.