JPS6227808Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a hot air heater.

As shown in Fig. 4, a conventional hot air heater has a burner 14 in front of a blower mechanism consisting of an outer case 1 and a runner 11 driven by a fan motor (not shown).
and a heat exchange chamber 19 housing a heat exchanger 15 are sequentially connected. For this reason, the heat exchanger 15
The size of the hot air heater, including the outer case 1, had to be large in order to have good contact with the air blown by the runner 11 and to efficiently exchange heat, which had the disadvantage that the hot air heater including the outer case 1 had to be larger. .

The present invention has been made in order to eliminate the above-mentioned drawbacks, and the outer case of the hot air heater is composed of an outer case body having an air intake port and a front plate having a hot air outlet, and the outer case The casing wall of the hot air fan is fixed to the inner wall of the main body, and a heat exchanger made of pipes is disposed within the casing wall, and the heat exchanger is installed in a straight line in the horizontal direction along the hot air outlet of the front plate. It consists of a diffuse combustion part that extends in the shape of a shape and a heat exchange part that is curved along the casing wall.This makes the hot air heater more compact and allows for sufficient diffusion combustion in the diffuse combustion part. This is to improve combustion performance, and effective heat exchange is performed in the heat exchange section through which the combustion gas flows, improving thermal efficiency.

An embodiment of the present invention will be described below with reference to the drawings.

The structure of the embodiment is as shown in FIGS. 1, 2, and 3. Reference numeral 1 denotes a flat, vertical outer case, with a lid-shaped front plate 3 having a hot air outlet 2 at the bottom, and It consists of an outer case main body 5 provided with an air intake port 4 and covered by the front plate 3, and constitutes the outer shell of the hot air heater. A fan case 6 is composed of a casing wall 7 attached to the inner wall of the outer case body 5 and around the air intake port 4, and a casing cover 9 removably fixed to the front surface of the casing wall 7 with screws 8. 10 is a fan motor, 11 is a runner fixed to the shaft of this fan motor 10, these constitute a hot air fan 12, the runner 11 is opposed to the air intake port 4, and the fan motor 10 is fixed to the casing cover 9. are doing. Reference numeral 13 denotes a discharge port provided at the lower part of the casing cover 9, which faces the hot air outlet 2 of the front plate 3. 14 is a burner,
It is installed on the discharge side of the hot air fan 12, supplies gas and air from outside the outer case 1, and burns the mixed gas. 15 is a heat exchanger consisting of a plurality of pipes connected to the tip of this burner 14, and the hot air outlet 2 of the front plate 3 is connected to the tip of the burner 14.
2, and a heat exchange section 16 that is curved and arranged between the outer periphery of the runner 11 and the casing wall 7. 18 is an exhaust port, and the heat exchanger 1
5 is formed at the outlet side end portion of the outer case 1 to discharge exhaust gas to the outside of the outer case 1.

The operation of this embodiment will be explained below. Gas and air are supplied to the burner 14 from the outside and are combusted, and the combustion gas is transferred to the outlet 13 of the fan case 6.
It passes through the vicinity and enters a heat exchanger 15 consisting of a plurality of pipes provided along the casing wall 7 of the fan case 6, is led to an exhaust port 18, and is discharged to the outside of the outer case 1. On the other hand, when the fan motor 10 is driven, the runner 11 rotates, and cold air is sucked into the fan case 6 from the air intake port 4 and advances along the casing wall 7 of the fan case 6 through the runner 11.
Heated heat exchanger 1 flowing opposite the flow path
It exchanges heat with the combustion gas inside 5 and is heated to become hot air, which passes through the discharge port 13 and is discharged from the hot air outlet 2 to the outside of the outer case 1 to heat the room. Next, to explain the combustion process in more detail, when gas is combusted in the burner 14 and a flame is formed, the flame is transferred to the heat exchanger 15.
It is completely combusted in the diffusion combustion section 17 by secondary air supplied separately. In this diffusion combustion, the flame ejected into the heat exchanger 15 is completely surrounded by a secondary air flow and diffused within the linear diffusion combustion section 17, and if the diffusion combustion section 17 is curved. The flame flows near the tube wall of the heat exchanger 15, resulting in insufficient diffusion combustion by secondary air. On the other hand, after combustion is completed, the combustion gas flows through the heat exchange section 16 which is curved and arranged along the inside of the fan case 6, exchanges heat sufficiently, and is discharged to the outside of the outer case 1 through the exhaust port 18. be done.

As described above, according to the present invention, the linear part, which is the diffusion combustion part of the heat exchanger installed in the fan case and connected to the tip of the burner, is installed horizontally along the hot air outlet of the front plate, In addition, the heat exchange section is curved along the casing wall of the fan case, which makes the hot air heater more compact and allows sufficient diffusion combustion to occur in the diffusion combustion section, improving combustion performance. , effective heat exchange is performed in the heat exchange section through which the combustion gas flows, which has the effect of improving thermal efficiency.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view of a hot air heater showing an embodiment of the present invention, and Fig. 2 is a side sectional view of the hot air heater.
FIG. 3 is an exploded perspective view of the hot air heater, and FIG. 4 is a front sectional view of the conventional hot air heater. 1...Outer case, 2...Hot air outlet, 3...Front plate, 4...Air intake port, 5...Outer case body, 7
...Casing wall, 12...Hot air fan, 14...
... Burner, 15 ... Heat exchanger, 16 ... Heat exchange section, 17 ... Diffusion combustion section.

Claims (1)

[Scope of utility model registration request] An outer case body 5 having an air intake port 4 and a front plate 3 having a hot air outlet 2 constitute an outer case 1 of the hot air heater, and a casing of a hot air fan 12 is mounted on the inner wall of the outer case body 5. In a case where the wall 7 is fixed and a heat exchanger 15 made of a pipe is disposed within the casing wall 7, the heat exchanger 15 is extended linearly in the horizontal direction along the hot air outlet 2 of the front plate 3. The diffusion combustion section 17 and the casing wall 7
A hot air heater comprising a heat exchange section 16 curved along the .