JPH01310262A - Warm-air space heater - Google Patents

Abstract

PURPOSE:To blow warm-air off smoothly even when a variable blade is set vertically substantially and permit the prevention of overheating of the main body of an instrument by bending the surface of the lower frame of a blow-off port frame so as to have an arced curvature. CONSTITUTION:The flow of warm-air under a condition that a variable blade 18 is set vertically substantially is blown off smoothly by the arced surface 14b of a blow-off port frame 14 as shown by an arrow sign (a) in a diagram. A gap between the variable blade 18 and the surface of the lower frame (arced surface 14b) of the blow-off port frame 14 is widened by the existence of the arced surface 14b and, further, the surface of the lower frame (arced surface 14b) is formed into a smooth curved surface whereby the direction of the flow of the warm-air is not changed suddenly and the warm-air flows out in a natural condition. Accordingly, warm-air will never be enclosed in the main body 1 of the instrument or the blow-off speed of the warm-air will never be reduced suddenly.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot air heater that heats a room using hot air.

BACKGROUND TECHNOLOGY In general, this type of hot air heater, for example, a fan heater, is
As shown in the figure, a burner 102 as a heat generating means is provided inside the main body 101, and combustion gas from the burner 102 is mixed with air from a blower 103 provided on the back of the main body and is blown out from a hot air outlet 104 to heat the room. It is supposed to be done.

The warm air outlet 104 has a horizontal looper 1.
05 are provided to guide the warm air in a substantially horizontal direction.

Problems to be Solved by the Invention However, since the looper 105 provided at the hot air outlet 104 is fixed to the main body, the direction in which the hot air is blown cannot be changed. Even if you try to prevent the hot air from hitting the room, the user must either move away from the hot air heater or move the hot air heater, and depending on the room situation, you may not be able to do either of these things and the hot air will not hit the room. There were times when I got hit and felt uncomfortable.

In order to avoid this, when the hot air heater was turned off, the indoor temperature dropped and the room felt cold, making it impossible to obtain comfortable heating.

Furthermore, since the looper 105 is fixed and the direction of the hot air cannot be changed, there is a problem in that there is a large difference in temperature distribution in the room during strong heating, medium heating, and weak heating. In other words, during strong heating, the air from the blower 103 is strong, so hot air is blown far away, resulting in a nearly uniform temperature distribution in the living space normally used by the user (excluding the ceiling and corners of the room). As the temperature decreases from medium to low, the amount of air blown from the blower 103 also decreases, and as a result, the draft effect of the hot air becomes relatively strong, and the distance that the hot air reaches becomes short, so that only the area near the heater becomes hot. This results in large differences in the indoor temperature distribution between high, medium, and low temperatures, such as uneven temperature distribution, which causes discomfort to the user.

Therefore, the present inventor provided a rotatable variable blade at the hot air outlet, and by rotating this variable blade as necessary, the user could prevent the user from being hit by the hot air. We also considered a method that could make the temperature distribution more uniform. However, in this case, if the variable blades are set almost vertically to prevent hot air from hitting the user, most of the hot air outlet will be blocked, causing hot air to get stuck inside the device and causing overheating inside the device. , the direction of hot air blowing suddenly changes and its flow velocity drops significantly, causing the problem that the hot air blown from the hot air outlet immediately rises, making it impossible to obtain the desired effect. was.

The present invention was made taking these problems into consideration.
The purpose is to provide comfortable heating and to prevent overheating within the device itself.

Means for Solving the Problems In order to achieve the above object, the present invention provides a hot air outlet with variable blades that are driven according to the amount of heat generated by a heat generating means or the amount of hot air, or by manual operation. The lower frame surface of the air outlet frame constituting the air outlet frame is bent into an arc shape.

Function The present invention uses the groove formation to make the variable blades approximately vertical so that hot air does not hit the user's face, and allows hot air to reach a relatively long distance even during low heating, making it comfortable. In addition to providing excellent heating, even in such conditions, the warm air blows out smoothly along the arcuate surface of the lower frame surface of the outlet frame, preventing warm air from getting trapped inside the equipment body. This prevents the hot air blowing speed from rapidly decreasing.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a heating machine body, and 2 denotes a front plate attached to the front surface of the heating machine body 1, which has a hot air outlet 3. Reference numeral 4 denotes a burner provided in the heater body i, which serves as a heat generating means, and in this embodiment, a vaporizing burner is used that vaporizes and burns kerosene. 5 is a burner case that covers the lower part of the burner 4, and is attached to the partition plate 6. Reference numeral 7 denotes a combustion cylinder that covers the upper part of the burner 4, and is installed upright on the partition plate 6, and a honeycomb-shaped exhaust gas purification catalyst 8 is provided in the upper opening. Reference numeral 9 denotes a duct provided in the heater main body 1 so as to cover the combustion tube 7, and has an opening 10 formed at the lower front side. Reference numeral 11 denotes a convection blower installed facing the rear of this duct, which is covered by a fan guard 12 and supplies indoor air sucked in from outside the heater body 1 into the duct, and inside this duct 9 from the combustion tube 7. The hot air is mixed with the combustion gas and blown out from the hot air outlet 3.

Reference numeral 14 designates an air outlet frame provided in the lower opening 10 of the duct 9, and its both sides are screwed to support fittings 13 (see FIG. 2) attached to the side plates 1a of the heater main body 1. The outlet frame 14 is formed to have a concave cross section and has an opening 15 formed in its bottom wall, and the opening 15 is aligned with the opening 10 of the duct 9, and the frame edge 14a is brought into contact with the inner surface of the front plate 2. The opening 10 of the duct 9 and the hot air outlet 3 are connected to each other.

The lower frame surface 14b of the outlet frame opening 15 is bent into an arc shape, and its outlet side end is bent into a substantially horizontal surface 14c.
It's Toshide.

Reference numeral 18 denotes a variable blade provided on the outlet frame 14 so as to be located above the hot air outlet 3. The variable blade 18 is formed wide so as to cover about half of the road of the outlet frame 14, and the inner surface thereof has an arcuate surface. It is 18a. As shown in FIG. 2, the variable blade 18 is rotatable as shown by arrow d by having shafts 19 protruding from both ends thereof passed through a support fitting 13 attached to the side plate 1a of the main body of the heater. 20 is a linking cam provided on one side of the shaft 19 of the soil variable blade 1B, and a pin shaft 21 is provided.

Reference numeral 23 denotes a link plate for swinging the variable blade 18, the northern part of which is rotatably directly connected to the pin shaft 21 of the linking cam 2o, and the lower part of which is a protrusion 23g to which springs 24a and 24b are attached.
, 23b are provided. Reference numeral 25 denotes a drive motor that moves the link plate 23 downward, and is composed of a stepping motor that can rotate in forward and reverse directions.A drive cam 26 is attached to the motor shaft, and a drive shaft 27 of the drive cam 26 is The springs 24m and 24b are attached and linked to the lower projections 23a and 23b of the link plate 23.

Reference numeral 28 denotes a control section for controlling the combustion section and the drive motor 25, and this is constructed as shown in the program diagrams of FIGS. 4 and 5. That is, 29 is a temperature detecting section consisting of a thermistor etc., 30 is a room temperature setting section for setting the indoor temperature, and 31 is a signal S1 from the temperature detecting section 29 and the room temperature setting section 3.
a comparison/judgment unit 32 that compares the signal S2 from 0 and outputs a signal S3 of, for example, strong, medium, or weak according to the difference;
33a, 33b, . . . are switches that drive the motor 25; The variable blade drive section 34 rotates the motor 25 by a predetermined angle in response to signals from the switches 33a, 33b, . . . . On the other hand, in FIG. 5, the combustion control section 32 also outputs a signal S4 for controlling the combustion amount and the air blowing amount to the variable blade drive section 34. The variable blade drive unit 34 outputs a signal S5 to the motor 25 to control the rotation angle of the variable blade 18 based on the signal S4.

The operation of the warm air heater configured as described above will be described below.

First, before the start of operation, the variable blade 18 is positioned in a substantially vertical direction as shown in FIGS. 3 and 7.

When the operation switch 35 (see FIG. 7) is turned on in this dog state, the combustion control section 32 is activated by the signal S3 from the comparison/judgment section 31, which is generated based on the outputs from the temperature detection section 29 and the room temperature detection section 30. A control signal S4 is issued to start combustion according to a predetermined sequence and to rotate the convection blower 11. and the fourth
In the case shown in the figure, when the user presses any of the switches 33a, 33b, etc., the variable blade drive unit 34
generates a signal S5 to drive the motor 25 and rotate the variable blade 18 to a predetermined angle.

That is, as shown in FIG. 2, the rotation of the motor 25 causes the drive shaft 27 of the drive cam 26 to rotate in the direction of the arrow a, and the link plate 23, which is linked via the springs 24a and 24b, moves in the direction of the arrow A. Descend. As a result, the linking cam 20 connected to the link plate 23 by the pin shaft 21 is
The integrated variable blade 18 rotates as shown by the arrow d via the linking cam 20 and the shaft 19.

Therefore, if the room gets warm and the user does not want to receive hot air, all he has to do is operate one of the switches 33g, 33b, etc. so that the variable blade 18 becomes approximately vertical. This allows the hot air to be blown downward, preventing it from directly hitting the user's face.

Moreover, in the case of FIG. 5, it becomes as follows. That is, variable wing 1
The rotation angle of 8 changes depending on the signal S4 from the combustion control section 32, and when it is strong, it is X in Fig. 3, when it is medium, it is Y, and when it is weak, it is 2.
It changes in conjunction with the amount of combustion and the amount of air blown by the convection blower. Therefore, during strong combustion and projectile air flow, the variable blade 1
8 is almost horizontal as shown in Figure 3
When the wind is blowing, it looks like Y in the same figure and slopes slightly downward.

Therefore, the flow of hot air is more downward than when it is strong, and the hot air becomes like Y' in FIG. 6, reaching farther than in the conventional case. Similarly, when the combustion is weak and the air is being blown weakly, the variable blades 18 will be inclined considerably downward as shown in 2, and the hot air will flow along the floor surface as shown in FIG. 6, 2'. Therefore, even if the flow velocity of the hot air is low and is easily affected by drafts, the hot air can reach a much farther distance than in the conventional case. In other words, the temperature distribution in the room is close to the temperature distribution during strong twist firing, and there are
Even if it is weak, the temperature distribution is almost similar.

Heating is performed in the manner described above. Here, we will explain the flow of warm air when the variable blades 18 are approximately vertical. This is as shown by arrow A in FIG. The air is blown out smoothly by the arcuate surface 14b. That is, due to the presence of the arcuate surface 14b, the variable blade 18 and the outlet frame 1
Since the gap between the lower frame surface (arc-shaped surface 14b) and the lower frame surface (arc-shaped surface 14b) of No. 4 is widened, and the lower frame surface (arc-shaped surface 14b) is a smoothly curved surface, the flow of hot air changes direction rapidly. It will flow out naturally without being affected. Therefore, hot air will not be trapped inside the main body 1 and the blowing speed will not suddenly decrease.

Further, since the outlet side end of the lower frame surface of the air outlet frame 14 is a substantially horizontal surface 14c, the hot air guided by the arcuate surface 14b and blown out flows in a substantially horizontal direction along this substantially horizontal surface 14c. As a result, it comes into contact with the floor at a position a little away from the hot air outlet 3. Therefore, hot air that remains at a high temperature immediately after being blown out from the hot air outlet 3 will not come into contact with the floor surface and discolor it.

In addition, in the above embodiment, the variable blade was explained as one piece, but
This may be a plurality of sheets (or any other structure may be used as long as it achieves the intended purpose).

Effects of the Invention As described above, the hot air heater of the present invention rotates the variable blades of the hot air outlet to prevent hot air from hitting the user's face directly, and adjusts the strength of the heating capacity. It is possible to make the temperature distribution in the room more uniform without any discomfort, and to achieve comfortable heating without discomfort.

In addition, even when the variable blades are set almost vertically, hot air is blown out smoothly, preventing the device from overheating, and the hot air also flows farther without compromising comfort. There are advantages such as

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a hot air heater according to an embodiment of the present invention, Fig. 2 is an enlarged perspective view of the main parts, Fig. 3 is an enlarged sectional view of the same, and Figs. 4 and 5 are the same control. 6 is an explanatory diagram of the operation, FIG. 7 is an external perspective view, and FIG. 8 is a sectional view showing a conventional hot air heater. 1...Main body, 3...Warm air outlet, 4.
...Heat generation means, 9...Duct, 10.
...Opening, 11... Convection blower, 1
4...Outlet frame, 14b...Circular surface, 14c...Substantially horizontal surface, 18...Variable blade, 25...Drive Means (motor), 28...
...control section. Name of agent: Patent attorney Toshio Nakao and one other person
-Main body 3-: JL hood outlet 4--Ha-ka (natural brother's child role p q-゛duct lO゛-Sekiguchi part lfo--Li-5 air claw feed XI^ 74-ai* Mouth piece /4c...-yen 5 melon 1 arrow surface 18-''iT barley wing Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 7 35

Claims (2)

[Claims] (1) A main body having a hot air outlet, a heat generating means provided in the main body, a duct surrounding the heat generating means, and a blower that supplies air around the duct and blows out hot air from the hot air outlet. and an air outlet frame provided between the hot air outlet and the opening in the front portion of the duct;
and variable blades that are driven according to the amount of heat or hot air generated by the heat generating means or by manual operation, and the lower frame surface of the outlet frame is bent in an arc shape. (2) The hot air heater according to claim 1, wherein the outlet side end of the arcuate surface of the outlet frame is a substantially horizontal plane.