JPH01310256A - Warm-airspace heater - Google Patents

Abstract

PURPOSE:To ensure that a flow of hot air comes into contact with a floor surface at some distance from a hot air blow-off port and prevent the temperature of the floor surface from being abnormally raised to cause discoloration of the floor surface by providing a substantially horizontal guide piece at a lower part of the hot air blow-off port. CONSTITUTION:A substantially horizontal guide piece 16 is attached to a lower edge of a blow-off port frame opening 15, and a variable vane 18 provided at a blow-off port frame 14 so as to be located at an upper part of a hot air blow-off port 3 is made to be so wide as to cover nearly the upper half of the frame 14. When the variable vane 18 is set substantially vertical, a flow of hot air does not come into contact with a floor surface immediately upon being blown off from the port 3 but is guided by the guide piece 16 to come into contact with the floor surface at some distance from the port 3, as indicated by an arrow (a). At the time of the contact, the temperature of the hot air is already lowered to a certain extent by the mixing of the hot air with room air, so that the floor surface is maintained at a comparatively low temperature.

Description

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

BACKGROUND TECHNOLOGY In general, this kind 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.

A horizontal looper 1 is provided at the hot air outlet 104.
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.

Since the matal 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 inventor has developed a hot air outlet 10 as shown in FIG.
4 is provided with a rotatable variable wing 106, and this variable wing 106
By rotating the fan as necessary, the user can prevent hot air from hitting the user himself/herself, and the temperature distribution can also be made more uniform. However, in this case, if the variable blades 106 are set almost vertically so that the hot air does not hit the user, the hot air hits the floor immediately after being blown out from the hot air outlet 104, causing the floor temperature to rise abnormally. , problems such as discoloration of the floor surface occurred.

The present invention was made taking these problems into consideration.
The purpose is to provide comfortable heating and to improve safety by preventing discoloration of the floor surface.

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 vertically in accordance with the amount of heat or the amount of hot air generated by the heat generating means or by manual operation. A substantially horizontal, downwardly inclined, or arcuate guide piece is provided at the bottom of the hot air outlet.

Effects of the present invention With the above-described configuration, the variable blades can be made substantially vertical to prevent hot air from hitting the user's face, etc., and comfortable heating can be obtained, as well as in such a situation. The hot air is guided by the guide piece and comes into contact with the floor at a distance from the hot air outlet, and by the time it comes into contact with the floor, it mixes with the indoor air and the temperature of the hot air has decreased, so the temperature of the hot air has decreased. The surface will not get hot enough to cause discoloration. In addition, as the heating capacity changes, the hot air blowout angle can be changed by rotating the variable blade installed at the humid air outlet and changing its inclination angle. The indoor temperature distribution will be less uneven, and more comfortable heating will be possible.

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 main body 1, which serves as a heat generating means, and in this embodiment, a vaporization type burner that vaporizes and burns kerosene is used. 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 at 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 warm 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. This air outlet frame 14 is formed to have a concave cross section and has an opening 15 formed in its bottom wall, and this opening 15 is aligned with the opening 10 of the duct 9, and the frame edge 14a is opposed to the inner surface of the front plate 2. The opening 10 of the duct 9 is connected to the hot air outlet 3. A substantially horizontal guide piece 16 is attached to the lower edge of the outlet frame opening 15, and this is heat-resistant painted or hollow-finished to prevent discoloration.

Reference numeral 18 denotes a variable blade provided on the outlet frame 14 so as to be located above the warm air outlet 3, and 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 1 of the main body of the heater. 20 is a linking cam provided on one side of the shaft 19 of the variable blade 18, and a pin shaft 21 is provided thereon.

Reference numeral 23 designates a link plate for swinging the variable blade 18, the upper part of which is rotatably directly connected to the pin shaft 21 of the linking cam 20, and the lower part of which is a protrusion 23m on which springs 24a and 24b are attached.
, 23b are provided. Reference numeral 25 denotes a drive motor that moves the link plate 23 up and down, 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 has a The springs 24a 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 block diagrams of FIGS. 4 and 5. That is, 29 is a temperature detection section consisting of a thermistor etc., 30 is a room temperature setting section for setting the indoor temperature,
31 is the signal S1 from the temperature detection section 29 and the room temperature setting section 30
For example, depending on the difference, the signal S2 from the
a comparison/judgment unit that outputs a signal S3 such as medium or weak; 32 is a combustion control unit that controls the combustion amount of the burner 4 and the air flow rate of the convection blower 11 based on the output signal S3 from the comparison/judgment unit 31; 33a, 33b, . . . are switches for driving the motor 25, and the variable blade drive unit 34 rotates the motor 25 by a predetermined angle in response to signals from the switches 33m, 33b, . On the other hand, in FIG. 5, the combustion control section 3
2 also outputs a signal S4 for controlling the combustion amount and 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 8.

When the operation switch 35 (see FIG. 8) is turned on from this state, the combustion control section 32 is activated by the output S3 from the comparison/judgment section 31 based on the outputs from the temperature detection section 29 and the room temperature detection section 30, and the combustion control section 32 is activated. A 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 33m, 33b, etc. so that the variable blades 18 become approximately vertical. This allows the hot air to be blown downward, preventing it from hitting the user's face directly.

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 in the middle of x1 in Fig. 3, and when it is weak in Y1, it is 2.
It changes in conjunction with the amount of combustion and the amount of air blown by the convection blower. Therefore, when there is strong combustion or strong wind, 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. 7, 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. 7 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 combustion, with strong, medium,
Even if it is weak, the temperature distribution is almost similar.

Heating is performed as described above, but when the variable blades 18 are in a substantially vertical position, the hot air does not come into contact with the floor immediately after being blown out from the hot air outlet 3, but rather as follows. Become. That is, the hot air is guided by the guide piece 16 and comes into contact with the floor surface at a position a little away from the hot air outlet 3, as shown by arrow A in FIG. At this point, the temperature of the hot air has been reduced to some extent by mixing with the indoor air, and the temperature of the floor surface is maintained at a relatively low temperature.

6A and 6B show another embodiment, in which the guide piece 16 is inclined so that the tip is located downward (see FIG. 6A).
) or arcuate (Fig. 6, 8). According to this configuration, the hot air blown out from the opening 15 of the outlet frame 14 is prevented from having its blowing direction suddenly changed by the guide piece 16, and flows out smoothly. Therefore, there is an advantage that the resistance to the flow of hot air is reduced, and the amount of air can be secured accordingly.

Note that when heating is performed as described above and the operation is stopped, the variable blade drive section 34 is switched to the combustion control section 3 in the case shown in FIG.
2, the motor 25 is rotated to its original state, that is, rotated in the direction opposite to arrow a in FIG.

As a result, the link plate 23 is lifted upward, the linking cam 20 is rotated in the opposite direction to the arrow G, and the variable blade 18 is returned to its original state, that is, in a substantially vertical direction.

In addition, in the above embodiment, the variable blade was explained as one piece, but
There may be a plurality of sheets, and 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 if the variable blades are oriented almost vertically, the hot air will come into contact with the floor at a distance from the hot air outlet, so the floor temperature will not rise abnormally and discolor the floor. It is safe and can be used with confidence.

[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. 6A and B are enlarged sectional views of main parts showing other embodiments;
8 is an external perspective view, FIG. 9 is a cross-sectional view showing a conventional warm air heater, and FIG. 10 is a perspective view of the main parts thereof. 1...Main unit, 3...Warm air outlet, 4...
... Heat generation means (burner), 11 ... Convection blower, 16 ... Guide piece, 18 ... Variable blade, 25 ... Drive means ( motor), 28...
...control section. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
Main body 3 - Warm pork outlet 4 - Burner (handle for steam generation) 11 - Convection feeder 16 - Industrial uniform 18 - Variable blade o - Spray 1st diagram example 16 - Stem interior Kata+8- Kasaigaa--Teikan+yaku (Motano 82, Figure 3, Figure 4, Figure 5, Figure 9, Figure 10)

Claims (2)

[Claims] (1) A main body having a hot air outlet, a heat generating means provided in the main body, a blower that supplies air to the heat generating means and blows out warm air from the hot air outlet, and a blower provided at the hot air outlet. A variable blade that can be moved up and down, a driving means for driving the variable blade, and a control unit that operates the driving means according to the amount of hot air or the amount of heat generated by the heat generating means or by manual operation. , and a warm air heater including a substantially horizontal guide piece provided at the bottom of the hot air outlet. (2) The hot air heater according to claim 1, wherein the guide piece is formed in an inclined or arcuate shape with the leading end thereof positioned downward.