JPS6130120Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hot air heater that discharges combustion hot air indoors, and more particularly to a hot air heater with improved efficiency and safety.

Conventionally, hot air heaters that discharge hot combustion air indoors are efficient because the hot air is sent directly into the room, but there are problems such as indoor air pollution due to exhaust gas and abnormal heating due to leakage of combustion hot air. However, it could not be called a safe heater.

In view of the above points, this proposal has realized a hot air heater that allows combustion hot air to circulate smoothly and eliminates the risk of overheating even in abnormal situations.

FIG. 1 is a perspective view of a hot air heater that is an embodiment of the present invention. In the figure, reference numeral 1 denotes an intake port, which is an opening that takes in indoor air, and the air heated by combustion inside is discharged from a lower outlet 2 to warm the room. 3 is a decorative board, and below it is the first
An operation button 5 shown in FIG. 2, which is a front view with the front plate 4 removed, is arranged, and rotation of the operation button 5 drives a control circuit 6 to control internal combustion and control the motor 7. The cross fan 8 blows out a mixture of hot combustion air and room air from below.

FIG. 3 is a longitudinal sectional view of FIG. 1, showing the internal combustion state. A filter 9 is provided in the immediate vicinity of the intake port 1 to purify the air sucked in from the intake port 1 and take it into the interior. The air after the filter 9 is covered by the first heat shield plate 10 on the upper side, the front plate 4 on the lower side, and a part of the wind panel 11, and is surrounded on the left and right by the partition plate 12 shown in FIG. Combustion walls 14 before and after the second heat shield plate 13 in the center,
15 and between the first heat shield plate 10 and the second heat shield plate 13 to the cross fan 8,
It is discharged into the room from the air outlet 2. There is a ventilation hole 16 near the intake port 1 at the top of the first heat shield plate 10,
A part of the air flow between the first and second heat shield plates 10 and 13 is caused to flow between the first heat shield plate 10 and the outer casing 17 by the suction force of the cross fan 8, and from the combustion chamber 18. This prevents the temperature of the first heat shield plate 10 from rising due to hot air. In other words, a ventilation path is formed that has a suction port near the air inflow port and has an opening in the air suction path of the cross fan 8, thereby preventing heat from being transferred to the outer casing 17.

Further, ventilation holes 19 are provided near the upper part of the cross fans 8 of the left and right partition plates 12 to cool electrical components such as the control circuit section 6 and the motor 7 located between the left and right outer casings 17 of the partition plate 12. Form airflow.

In addition, the combustion wall 15 above and behind the wind panel 11
A ventilation hole 21 for adjustment is also provided in the partition plate 20 between the Adjust the balance with the amount of air coming down.
In order to adjust the balance, the configuration may be such that the size and arrangement of the ventilation holes 21 can be changed, or the height of the third heat shield plate 22 can be changed.

A burner 23 for combustion is provided in the center of the combustion chamber 18, and rectifying plates 24 are arranged in front and behind the burner 23 to stabilize the secondary airflow, which is the combustion air of the burner 23, along the rectifying plate 24. Achieves stable combustion with airflow. The distance between the baffle plate 24 and the burner 23 will vary depending on the capacity of the burner 23, but it should be set appropriately so that the air flow is laminar.

The combustion hot air from the burner 23 is transferred to the combustion walls 14, 15
rises from the upper part of the heat shield plate 13 to the second heat shield plate 13, and descends between the rear part 25 of the second heat shield plate 13 and the combustion wall 15 by the action of the cross fan 8, and the first and second heat shield plates 1
It is mixed with the air flow between 0 and 13 to form moderately warm air and is discharged from the outlet 2. The front part 26, which is the air inflow side of the second heat shield plate 13, extends at the same level or lower than the rear part 25, which is the hot air exhaust side, so that if the cross fan 8 should stop, the hot air will be transferred to the first and second heat shields. In this case, the heat sensitive part 27 near the ventilation hole 16
An abnormality is detected by the control circuit section 6, and the combustion is stopped by the control circuit section 6.

The heat sensitive part 27 is usually the first and second heat shield plates 10, 1
This is to monitor the temperature of the indoor air that is taken in during the 3-hour period, and functions as room temperature control and overheat detection as described above.

As described above, in this case, the combustion chamber housing the burner is disposed inside the outer casing, an intake port is provided on the front or rear surface of the upper part of the outer casing, and a fan is disposed below the combustion chamber. In the case where the indoor air sucked in from the intake port and the hot combustion air from the combustion chamber are discharged into the room from the intake port provided at the bottom of the outer casing, the top and front and rear surfaces of the combustion chamber, excluding the intake port, are covered with heat shield plates. At the same time, surround the combustion chamber and the sides of the fan with a partition plate, and store electrical components between the partition plate and the outer casing, and at least the part of the upper heat shield near the intake port and the fan on the partition plate. A ventilation hole is provided near the suction part of the inlet, and the indoor air sucked in from the inlet is convected between the outer casing and the heat shield, and at the same time, it is also vented between the outer casing and the partition. In addition to efficiently preventing the temperature rise of the outer casing by using air, the suction power of the fan through the ventilation holes provided in the partition plate can be used to prevent electrical components placed between the partition plate and the outer casing. It is for cooling.

As a result, it is possible to prevent the temperature of the outer casing and electrical components from rising with a relatively simple configuration, and it is possible to downsize the main body of the device and realize a safe heater.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a hot air heater according to an embodiment of the present invention, Fig. 2 is a front view of Fig. 1 with the front plate removed, and Fig. 3
The figure is a longitudinal sectional view of FIG. 1. In the figure, 1 is an intake port, 2 is an outlet, 4 is a front plate, 7 is a motor, 8 is a fan, 10, 13 are heat shield plates, 12 is a partition plate, 18 is a combustion chamber, 16, 19,
21 is a ventilation hole.

Claims (1)

[Scope of utility model registration request] A combustion chamber containing a burner is disposed inside the outer casing, and an intake port is provided on the front or rear surface of the upper part of the outer casing, and a fan is disposed below the combustion chamber. The indoor air sucked in from the combustion chamber and the hot combustion air from the combustion chamber are discharged indoors from the air outlet provided at the bottom of the outer casing, and the top and front and rear surfaces of the combustion chamber, excluding the air intake area, are covered with heat shield plates. At the same time, the combustion chamber and the sides of the fan are surrounded by a partition plate, and electrical components, etc. are stored between the partition plate and the outer casing, and at least the part of the upper heat shield plate near the intake port and the part of the partition plate are enclosed. A ventilation hole is provided near the suction part of the fan, and the indoor air sucked through the intake port is convected between the outer casing and the heat shield plate, and at the same time, it is ventilated between the outer casing and the partition plate. Wind heater.