JPS634923Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a heating heat source device that heats the fluid in the heat exchange pipe by placing a heat exchange pipe inside a can sealed with a heat medium, and uses the fluid to perform heating. The purpose is to reduce the pressure inside the can.

Conventionally, heat exchangers in heating heat source equipment heat a heat medium with combustion gas, etc., and then immerse a heat exchange pipe in a can containing the heat medium to heat the fluid inside the pipe and use it for space heating. When the heat transfer medium is heated, it expands and the pressure of the can body increases. Therefore, in order to suppress the pressure increase, there is a method of providing an expansion tank in the can body and compressing the air inside the tank to lower the pressure. However, even in this case, when the temperature inside the heat source device increases due to operation of the heat source device, the air temperature in the tank also rises, and the can body pressure increases. Therefore, it was necessary to increase the tank volume in advance, or to install the tank farther away from the heat source.

The present invention is based on the above-mentioned conventional technology and aims to provide a heating heat source device that lowers the temperature inside the expansion tank and lowers the pressure of the tank body.

Hereinafter, details of the present invention will be explained with reference to the drawings. The figure is a cross-sectional configuration diagram of a heat source device for a heating device according to an embodiment of the present invention. The heat source device includes a heat exchanger main body 1, a burner 2, an exhaust pipe 3, and exteriors 4 and 5. The heat exchanger main body 1 has a can body 7 containing a heat medium 6, an indirect heating pipe 9 through which a heating fluid 8 is laid spirally inside the can body, and an annular part of the can body 7. A heat absorbing fin 10 is provided,
Exhaust suppression cap 1 in the area surrounded by heat absorption fins
1 is provided. On the other hand, an expansion tank 12 containing air is provided in the upper part of the can body and communicates with the upper end of the can body. Also, between the exterior side wall 4 and the top plate 5,
Opening 13 into which air necessary for combustion in burner 2 enters
is provided at the same height as the expansion tank 12 or at a higher height. Furthermore, other exterior parts are sealed.

With this configuration, combustion air flows as shown by the arrow in the figure. The expansion tank 12 is therefore located in the passage of combustion air to the burner 2 and is cooled by the combustion air. Therefore, the temperature of the air inside the expansion tank decreases, and the pressure in the tank can be reduced.

Furthermore, since the combustion gas passage is provided on the inner circumference of the can, the entire device can be made compact, but the expansion tank 12 and exhaust pipe 3 are located close to each other.
The air inside the expansion tank is heated by radiation from the exhaust stack 3, but since the tank is cooled with combustion air, the temperature rise can be suppressed.

As described above, the present invention has great effects in that by locating the expansion tank within the combustion air passage, the pressure in the can can be lowered and the apparatus can be made smaller.

[Brief explanation of the drawing]

The drawing is a sectional view of a heat exchanger according to an embodiment of the present invention. 1...Body, 2...Burner, 3...Exhaust pipe, 4
... Exterior, 5 ... Top plate, 6 ... Heat medium, 7 ... Can body, 8 ... Heating fluid, 9 ... Indirect heating pipe, 10
... Heat absorption fin, 11 ... Exhaust suppression cap, 1
2... Expansion tank, 13... Opening.

Claims (1)

[Scope of utility model registration request] A cylindrical can body, a heating tube disposed inside the can body, a heating medium filled in the can body, a fluid to be heated flowing in the heating tube, and an expansion tube provided in an upper part of the can body in communication with the can body. A heat exchanger consisting of a tank and heat-absorbing fins arranged in the central space of the cylindrical can body and fixed to the surface of the can body is housed in the exterior, and a gas burner is disposed at the lower part of the central space of the can body, and the heat exchanger is disposed in the lower part of the central space of the can body, and the gas burner passes through the heat absorbing fins. A passage is formed in which the combustion gas is discharged through a top plate provided at the top of the exterior, and a passage is formed to guide combustion air to the gas burner through an opening formed between the exterior and the top plate, and a passage is formed in the vicinity of the opening. A heating heat source device, characterized in that the expansion tank is provided in the passage.