JP2510595Y2 - Hot air heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention has a blower fan on the top of a box and a casing provided around the blower fan, and has a plurality of U-shaped pipes on the bottom, which are parallel to each other. In addition, the present invention relates to an improvement of a hot air heater having a heat exchanger configured to be stacked in a row in an upper direction, a burner 2 communicating with the heat exchanger, and a hot air discharge port provided at a lower portion of the front surface of the box body. It is a thing.

2. Description of the Related Art A conventional hot air heater of this type will be described with reference to FIGS. (For example, Japanese Utility Model Laid-Open No. 58-177717) 1 is a burner to which a plurality of U-shaped tubes are formed at the tip, and heat exchangers 2 each of which is formed by stacking them in parallel and in an upper row are connected. ing. Reference numeral 3 denotes a casing provided above the heat exchanger 2, which is installed so as to open toward the heat exchanger 2 side, and has an electric motor 4 attached at the center thereof.
A blower fan 5 housed inside the casing 3 is connected to the shaft of. Reference numeral 6 denotes a box, in which the above-mentioned parts are stored. A hot air outlet 7 is located in front of the lower portion of the box 6.

 The operation of the above configuration will be described below.

The combustion gas emitted from the burner 1 passes through the heat exchanger 2 and goes out through an exhaust pipe (not shown). On the other hand, the blower fan 5 sends air to the heat exchanger 2 heated by the burner 1 to heat the room.

Problems to be Solved by the Invention With the above configuration, the heat exchanger 2 is U-shaped,
It is an effective structure for product compactness,
On the other hand, combustion gas from the burner 1 collides with the U-shaped portion,
It has a drawback that the temperature becomes high locally and the reliability is poor.

Further, since the temperature of this portion is high, the lower portion of the U-shaped portion of the portion discharged from the warm air outlet 7 has a higher temperature than the other portions.

Means for Solving the Problems The present invention has been made in order to solve the above-mentioned problems, and the U of a heat exchanger composed of a plurality of U-shaped tubes is used.
A partition plate A is provided in the gap between the projecting end of the character portion and the wall surface of the box body so that the gap between the partition plate A and the tip of the U-shaped portion of the heat exchanger is narrowed on the side of the blower fan. A partition plate B is fixedly provided to the partition plate A in a gap between a plurality of pipes so that each heat exchanger has a predetermined gap at its tip, and the partition plate A has a lower side than at least a half of the partition plate A. A plurality of holes are bored in each of the holes, a guide plate inclined upward toward the wall surface of the box is provided below each of the holes, and the opposite side of the nose of the casing is provided toward the U-shaped side of the heat exchanger. I did it.

Action The heat of the U-shaped part of the heat exchanger, which becomes high temperature, is released to the partition plates B and A, and the opposite side of the nose part of the casing is provided above the U-shaped part of the heat exchanger to send a large amount of air. It is intended to suppress local high temperature.

Further, by providing a guide plate by forming a hole below half of the partition plate A, the partition plate B is provided to the lower side of a plurality of pipes where the local high temperature suppression effect is insufficient. The wind is sent to exert the effect of suppressing high temperature, and the wind passing through this part is U
Since it flows into the inside of the U-shaped portion of the U-shaped heat exchanger, there is less variation in the temperature of the hot air discharged from the hot air outlet.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1, 2 and 3.
It will be described with reference to the drawings.

Reference numeral 8 is a partition plate A, which is mounted in the gap between the tip of the U-shaped portion of the heat exchanger 2 and the wall surface of the box body while inclining upward toward the U-shaped portion, and has a plurality of holes 8a and holes 8a in the lower part. A guide plate 9 is provided at the lower part of each of the above inclining upward on the wall surface side of the box body. 10 is a partition plate B, and each heat exchanger 2 is attached to the tip of the U-shaped part of the heat exchanger 2.
Is provided with a spacer 10a so that the partition plate A has a constant gap.
Mounted on Reference numeral 11 denotes a casing provided above the heat exchanger 2, and is formed so that the opposite side of the nose 11a is located above the U-shaped portion of the heat exchanger 2. The other components are the same as those in the conventional example, and the description thereof will be omitted.

 The operation of the above configuration will be described below.

The combustion gas emitted from the burner 1 passes through the heat exchanger 2 and is discharged to the outside through an exhaust pipe (not shown). On the other hand, the air from the blower fan 5 is sent to the heat exchanger 2 heated by the burner 1 to exchange heat to heat the room.

Here, a partition plate provided at the tip of the U-shaped portion of the heat exchanger 2
The heat of the U-shaped part which became high temperature is transmitted to B10 and reaches the partition plate A8. On the other hand, the wind from the blower fan 5 is the nose of the casing 11.
Since the amount of air on the side opposite to 11a is large, this air flows downward while cooling the U-shaped portion of the heat exchanger 2, the partition plate B10, and the partition plate A8.

Next, due to the plurality of holes 8a and the guide plate 9 provided in the partition plate A8, the wind passing through the gap between the partition plate A8 and the wall surface of the box body partially cools the partition plate A8 and causes the air to pass through the holes 8a from the guide plate 9. As a result, the hot air that has cooled the lower U-shaped portion of the heat exchanger 2 and that has cooled the upper portion of the U-shaped portion and the partition plate B10 is entrained and flows into the inside of the U-shape and is directed to the substantially central portion of the hot air outlet 7. It discharges into the room and heats the room.

That is, in the upper portion of the U-shaped portion of the heat exchanger 2, the partition plate B1
0, heat is released to the partition plate A8, and a large amount of wind from the blower fan 5 prevents the U-shaped part from becoming hot. Also, in the lower part of the U-shaped part, as in the upper part 2, the partition plate B10, the partition plate It is possible to improve the reliability and comfort by suppressing the heat dissipation by the plate A8, suppressing the temperature rise of the U-shaped part by the guide plate 9 and the hole 8a, and suppressing the fluctuation of the blowing temperature and the fluctuation of the blowing air volume. I can.

Effects of the Invention As described above, according to the present invention, it is possible to suppress the local temperature rise of the heat exchanger and to provide a highly reliable and comfortable warm air heater with less variation in the warm air temperature and the warm air volume. It is a thing.

[Brief description of drawings]

FIG. 1 is a front sectional view of a hot air heater showing an embodiment of the present invention. FIG. 2 is a vertical sectional view of FIG. FIG. 3 is a detailed view of the main parts of the hot air heater of the present invention. FIG. 4 is a front view of a warm air heater showing a conventional example. FIG. 5 is a sectional view taken along line HH of FIG. 1 ... Burner, 2 ... Heat exchanger, 5 ... Blower fan, 6
...... Box, 7 ...... warm air outlet, 8 ...... Partition plate A, 8a ……
Hole, 9 ... Guide plate, 10 ... Partition plate B, 11 ... Casing, 11a ... Nose part.

Claims (1)

(57) [Scope of utility model registration request] 1. A blower fan (5) at the top of the box (6),
A casing (1 provided around the blower fan (5)
1), a heat exchanger (2) having a plurality of U-shaped tubes in the lower part of its casing (11) and stacked in parallel, and a burner communicating with the heat exchanger (2). (1) and a box (6) provided with a hot air outlet (7) at the lower front side, in the warm air heater, the U-shaped tip of the heat exchanger (2) and the box (6) A partition plate (8) A is provided in the gap between the wall surface and the partition plate (8) A so that the gap between the partition plate (8) A and the tip of the U-shaped portion of the heat exchanger (2) becomes narrower on the blower fan (5) side. A partition plate (10) B is provided at the U-shaped end of the heat exchanger (2) so that each heat exchanger (2) has a predetermined gap. The partition plate (8) A is provided with a plurality of holes (8a) below at least a half of the partition plate A, and a box is provided below each of the plurality of holes (8a). Upward on the body wall side A warm air heater characterized in that a slanted guide plate (9) is provided, and a side of the casing (11) opposite to the nose portion (11a) is provided on the U-shaped side of the heat exchanger (2). .