JPH0648268Y2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a heat exchanger used for a heater or the like.

[Conventional technology]

FIG. 6 is a cross-sectional view showing a conventional heat exchanger disclosed in, for example, Japanese Utility Model Laid-Open No. 62-45582, and (1) shows a tube formed by aluminum extrusion forming a flow passage for passing high temperature exhaust gas due to gas combustion. The cylindrical body (2) formed in the shape of a cylinder is a baffle plate formed in a flat shape by arranging a plurality of sheets side by side in the cylindrical body, and provided with ventilation holes (3).

The conventional heat exchanger is configured as described above, and the high temperature exhaust gas due to gas combustion is circulated in the cylindrical body (1) through the ventilation holes (3) of the baffle plate (2). At this time, the heat of the exhaust gas is transferred to the cylindrical body (1) and the baffle plate (2) and is blown to the outer circumference of the cylindrical body, whereby heat is exchanged and warmed.

[Problems to be solved by the device]

In the conventional heat exchanger as described above, since the tubular body (1) is formed by aluminum extrusion molding and the baffle plate (2) is fixed inside the tubular body (1), the material cost is high. . Also, if the flow of hot exhaust gas in the heat exchanger is not uniform and flows upward or downward due to the baffle plate (2), etc., the direction of connection with the exhaust pipe connected to the end is not specified. The temperature of the exhaust pipe may shift to the low temperature side or to the high temperature side in relation to the flow of air that comes into contact with the exhaust pipe, etc. There is a problem that connection of is troublesome and troublesome.

The present invention has been made to solve the above problems, and an object thereof is to make it possible to easily obtain a heat exchanger that can be manufactured at low cost and that has a stable function.

[Means for Solving the Problems]

In the heat exchanger according to the present invention, a bowl-shaped member having a flange portion formed on the peripheral edge and two tubular portions having an opening formed in the central portion is opposed to each other and caulked at the tubular portion. The formed heat exchanger members are opposed to each other so that the directions in which the two openings are lined up are sequentially different by 90 degrees, and the flanges are caulked to form a bowl-shaped member at the end of the heat exchanger body. This is a heat exchanger in which a ventilation pipe bent substantially at a right angle is connected and fixed, and a bowl-shaped member at the end thereof is provided with an indicator for indicating a relative fixing direction with the ventilation pipe.

[Action]

In this invention, the bowl-shaped member made of sheet metal can be manufactured by caulking, and the ventilation pipe and the bowl at the end can be formed regardless of whether the heat exchanger member is composed of an even number or an odd number. An appropriate relative positional relationship with the member can be easily grasped, and the stability of the function can be easily obtained even if the heat exchanger member is increased or decreased.

〔Example〕

1 to 5 are views showing an embodiment of the present invention,
Reference numeral (4) is a heat exchanger body, which has a flange portion (5) formed on the peripheral edge thereof, and has a tubular portion (6) and an opening portion (7) in the central portion.
Two heat exchanger members (9) formed at a predetermined interval and made to face each other with bowl-shaped members (8) made of an aluminized steel plate, and sequentially caulking the openings (7) by caulking. The plurality of flange portions (5) are opposed to each other and the openings (7) are caulked so that the arrangement of the openings (7) is sequentially different by 90 degrees to form a ventilation passage (10) inside, and the bowl-shaped member (8a) at the end portion is formed. ) Is provided with a concave indicator portion (11), and a heat exchanger is formed by caulking a ventilation pipe (12) bent at a substantially right angle. The indicating portion (11) displays the direction in which the openings (7) are arranged. If the ventilation pipe (12) is caulked using the indicating portion (11) as an index, the arrangement of the openings (7) is predetermined. The ventilation pipe (12) can be attached to the relative relationship of the above. That is, the bowl-shaped member (8a) at the end is formed when the even number of heat exchanger members (9) are connected and when the odd number of heat exchanger members are connected.
The arrangement of the openings (7) in will differ by 90 degrees,
The flow of exhaust gas to the ventilation pipe (12) becomes uneven, which causes inconvenience. In order to avoid this, the twist is made about the center line of the heat exchanger member (9), but the ventilation pipe (12) is L-shaped and its exhaust direction should be changed when assembled to a heater or the like. Since the ventilation pipe (12) and the bowl-shaped member (8a) at the end must be caulked with a relative displacement. An indicator (11) is a device that easily shows this relative deviation. (13) is a tube fixed to the bowl-shaped member (8) at the other end by caulking, (14) is a header fixed to this tube, and (15) is the heat exchanger (4) through this header. (16) is a combustor connected to the combustion cylinder, and (17) is an air supply pipe connected to the combustor.

In the heat exchanger configured as described above, the air from the air supply pipe (17) and the fuel from the fuel pipe (not shown) are mixed and burned in the combustor (16) and the combustion cylinder (15), Combustion gas is flowed through the pipe (13) into the heat exchanger (4) through the header (14), and the tubular portion (6) and the opening (7) of the heat exchanger (4) are successively turned by 90 degrees. Since they are provided differently, the combustion gas fluid collides with the bowl-shaped member (8) at each stage, the boundary layer is broken, and the heat of the combustion gas fluid is easily transferred to the bowl-shaped member (8). Improve exchange efficiency. In this way, the combustion gas fluid is exhausted from the ventilation pipe (12) through the ventilation passage (10) in the heat exchanger (4), and indoor air is blown to the outer periphery of the combustion cylinder (15) and the heat exchanger (4). , The heat is exchanged and the air is warmed to heat the room.

The heat exchanger (4) thus configured can cope with the change in the length of the combustion cylinder (15) by increasing or decreasing the number of bowl-shaped members (8). The ventilation pipe (12) is formed by sequentially forming the portions (7) different by 90 degrees.
However, since the bowl-shaped member (8) at the end to which the ventilation pipe (12) is fixed is provided with the pointing portion (11), the direction can be easily determined. The caulking of (12) and the flange (5) can be done easily.

[Effect of device]

As described above, this invention can be manufactured at low cost because it can be obtained by connecting the bowl-shaped members of the sheet metal by caulking, and even if the number of the heat exchanger members is even or odd, the ventilation pipes are appropriate. A heat exchanger with stable function can be easily obtained by easily connecting and fixing in a relative relationship.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view showing a heat exchanger member (9), FIG. 3 is a side view of FIG. 2, and FIG. Partial sectional view, FIG. 5 is a side view of FIG. 4, and FIG. 6 is a sectional view showing a conventional heat exchanger. In the figure, (4) is a heat exchanger main body, (5) is a flange portion, (7) is an opening portion, (8) is a bowl-shaped member, (10) is a ventilation passage, (11) is an indicating portion, ( 12) is a ventilation pipe.

Claims (1)

[Scope of utility model registration request] 1. A bowl-shaped member made of sheet metal having a flange portion formed on the peripheral edge and two cylindrical portions having an opening formed at the center thereof is opposed to each other and caulked at the cylindrical portion. The formed heat exchanger members are opposed to each other such that the directions in which the two openings are arranged are sequentially different by 90 degrees, and the flanges are crimped to each other, and the bowl at the end of the heat exchanger body is connected in series. A heat exchanger in which a bent pipe bent substantially at a right angle is fixedly connected to a plate-shaped member, wherein a bowl-shaped member at the end of the heat-exchanged member is provided with an indicating portion for indicating a relative fixing direction to the vent pipe. Heat exchanger to.