JPH01252861A - Hot air heater - Google Patents

Abstract

PURPOSE:To obtain uniform heating in either case of high or low combustion by a method wherein one of air-flow direction control plates at a hot air outlet port is directed more downwardly during a low burning operation than the direction in which the same is directed during a high burning operation. CONSTITUTION:When a burner body 1 works in high combustion, an air-flow direction control plate 14 is directed in a substantially horizontal direction, and high-temperature air is blown forwardly out of a hot air heater, without being blown downwardly. On the other hand, when the burner body 1 works in low combustion, a spring 15 made of shape memory alloy acts so that the air-flow direction control plate 14 is directed downwardly, and a space (30-80cm) on a floor surface can be uniformly heated by hot air at a low temperature and with a small air quantity. Moreover, as substitution for the spring 15, a bimetal may be optionally used. Further, the temperature of the hot air is detected by a thermistor, or pressure is detected by an air pressure switch, to generate a signal for operating a motor, whereby the angle of the air-flow direction control plate 14 may be optionally varied.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot air heater equipped with a looper at a hot air outlet.

Conventional technology Generally, the configuration of the combustion chamber and air passage of a gas hot air heater is
As shown in the figure, there is a burner body 1, and this burner body 1
The lower part of the burner is covered with a lower burner fixing plate 2, and the upper part is covered with a combustion chamber case a forming a combustion chamber. A front heat shield plate 4 covers the combustion chamber case 3 from the front to the lower part, and a rear heat shield plate 5 covers the rear part.

Above the front heat shield plate 4, a convex portion 4 is provided inwardly, and above the rear heat shield plate 5, a convex portion 5a is provided inwardly at the same height as the convex portion of the front heat shield plate 4. It is set up.

An upper heat shield plate 6 is fixed to the upper part of the combustion chamber case 3.

A front heat shield cover 7 covers the outside of the front heat shield plate 4 and the upper heat shield plate 6. Reference numeral 8 denotes a blower fan, which is covered by a fan case 9 from the rear to the lower part.

Reference numeral 10 denotes a blowout looper, which is positioned horizontally at the hot air blowout port 16 and fixed to the outer case 11.

A pace 12 is fixed to the lower part of the outer case 11. 1
7 is an air intake port.

The flame ejected from the burner body 1 burns in the combustion chamber case 3. The flame then rises further upward and burns in the space A between the front heat shield plate 4 and the rear heat shield plate 5. Blow fan 8
rotates in the direction of arrow B, and directs the combustion waste gas from section A to the front heat shield plate 4.
and the front heat shielding cover 7, and hot air is blown out from the blow-off looper 10. At this time, the blowout looper 10 is fixed, and the burner body 1 burns strongly.

Regardless of the weak combustion, warm air is blown out only in one direction (horizontally).

Problems to be Solved by the Invention However, in the above configuration, in order to suppress the temperature rise of the floor surface during intense combustion to below 65°C, which is said to prevent vinyl chloride tiles attached to the floor from coming off, Louvers shaped like hot air blowing out from the bottom of the appliance body (so-called hot air bottom blowout) are usually oriented horizontally or upward.

However, in this case, when the hot air temperature decreases or the air volume decreases during weak combustion, the hot air tends to immediately move upward from the outlet 16. Therefore, the heating effect on the floor in the vicinity of the appliance body was poor.

The present invention solves the problems of the prior art, and provides a hot air heater that can provide uniform heating regardless of whether the combustion is strong or weak.

Means for Solving the Problems In order to solve the above problems, the present invention directs a part of the wind direction control plate of the hot air outlet to face downward during weak combustion compared to during strong twist firing.

Effects The present invention has the above-mentioned structure, which causes weak combustion and reduces the temperature.
Alternatively, even if the air volume becomes small, the hot air is guided downward by the wind direction control plate, and the floor near the main body of the appliance can be heated.

EXAMPLE An example of the present invention will be described below based on the drawings. FIGS. 1 and 2 are cross-sectional views of a hot air heater in an embodiment of the present invention. The same parts as those in the conventional example described above are given the same reference numerals, detailed explanations are omitted, and different parts will be mainly explained.

In Figures 1 and 2, 7 is a front heat shield cover, and 8 is a blower fan whose rotation speed can be changed from strong to 1 or less. do. Reference numeral 9 denotes a fan case, and reference numeral 10 denotes an outlet louver fixed approximately horizontally to the hot air outlet 16. At the top of the blow-off louver 10, a wind direction control plate 14 rotatable by a fulcrum 13 is installed substantially horizontally. A spring 15 made of a shape memory alloy and having both ends fixed to the lower part 7a of the front heat shielding cover 7 and the wind direction control plate 14 is provided. When the burner body 1 is strongly twisted, the atmosphere becomes high temperature and the spring 15 is in a contracted state as shown in FIG. 1, and the wind direction control plate 14 is oriented substantially horizontally. Further, during weak combustion, the atmosphere becomes low and the spring 15 extends as shown in FIG. 2, and the variable air direction plate 14 rotates around the fulcrum 13 and points downward.

In the embodiment described above, when the burner body 1 is hard-twisted, the wind direction control plate 14 is oriented substantially horizontally as shown in FIG. 1, and the high-temperature wind is blown out forward without being directed downward. Also, when the burner body 1 burns weakly, the shape memory alloy spring 15 acts and the wind direction control plate 14 is directed downward as shown in Fig. 2. In contrast to the warm air zone O of the product, it becomes a zone like E, and the temperature above the floor (30~80 c
m) can be heated evenly.

Note that a bimetal may be used instead of the spring 15, and the temperature of the hot air can be detected with a thermistor, or the pressure can be detected with a wind pressure switch and the motor can be rotated based on this signal to change the angle of the wind direction control plate 140. You can.

Effects of the Invention As described above, in the present invention, the wind direction control plate of the hot air outlet is directed downward during weak combustion, so the temperature near the floor is higher than in the conventional example, resulting in comfortable heating and economy. You can improve your sexual performance.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a main part of a gas hot air heater according to an embodiment of the present invention, Fig. 2 is a sectional view of the main part, Fig. 3 is a longitudinal sectional view of a conventional gas hot air heater, and Fig. 4 is a sectional view of a conventional gas hot air heater. FIG. 3 is a side view showing a conventional band and a band according to the present invention. 14... Wind direction control board, 15... Spring, 16... Warm air outlet. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
Burner body stop I 11! It! B ---7
719-・Faso case 10-・-Blowout louver Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] Hot air heating has a wind direction control board on the hot air outlet that changes the wind direction, and when the hot air temperature drops and the air volume becomes small, the hot air heating detects the hot air temperature or air volume and directs the wind direction control board downward. vessel.