JPH01318854A - Hot-air heater - Google Patents

Abstract

PURPOSE:To ensure uniform distribution of room temperature and enable comfortable heating by providing at a hot air blow-off port a variable vane driven vertically according to the quantity of heat or the quantity of hot air, and blowing off cold air from a lower part of the hot air blow-off port. CONSTITUTION:When one of switches 33a, 33b... is pressed by the user, a signal S5 according to the switch pressed is outputted from a variable vane-driving part 34 to drive a motor 25, thereby rotating a variable vane 18 to a predetermined angle. The rotating angle of the vane 18 is varied according to a signal S4 from a combustion-controlling part 32, and is varied in conjunction with combustion quantity and the quantity of a draft generated by a convection blower 11. Cold air guided from the blower 11 through a cold air guide 13 is blown off from a lower part of a hot air blow-off port 3, together with hot air (b). Therefore, even when the variable vane 18 is set substantially vertical, there is no possibility that the temperature of a floor surface may be abnormally raised.

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.

Conventional technology In general, this kind of hot air heater, for example, a fan heater, has a sixth
As shown in the figure, a burner 102 as a heat generating means is provided inside the main body 101, and the combustion gas from the burner 102 is mixed with air from a blower 103 installed on the back of the main body, and hot air is blown out from an 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.

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 the temperature distribution in the room during high 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 fan 103 also decreases, and as a result, the draft effect of the hot air becomes relatively strong, and the distance the hot air reaches becomes short, and only the area near the heater is affected. There was a large difference in the indoor temperature distribution between high, medium, and low temperatures, such as uneven temperature distribution, which caused the user to feel uncomfortable.

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 hot air from hitting the user himself/herself. 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 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, causing the floor surface temperature to rise abnormally, causing the floor to Problems such as discoloration of the surface occurred.

The present invention has been made with these points in mind.
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. This configuration includes a cold air supply means for blowing out cold air from the lower part 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. However, the hot air is either prevented from flowing directly onto the floor by the cold air blown from below, or mixes with the cold air to lower its temperature, so the floor does not become hot enough to cause discoloration.

In addition, if the variable blade installed at the hot air outlet is rotated and its inclination angle is changed to change the hot air blowout angle, even if the heating capacity is changed, the hot air The distance traveled will not change much, and the distribution of indoor temperature will be less uneven, allowing for more comfortable heating.

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 tube 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 within the heater main body 1 so as to cover the combustion tube 7, and has an opening 1o formed just below the front. Reference numeral 11 denotes a convection blower installed facing the rear of this duct, which is covered by a fan guard 12, and which 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. 13 is the above duct 11
With a cold air guide attached to the bottom of the combustion tube 7 so as to surround it,
The rear part thereof has an opening 13 facing a part of the convection blower 11 so as to take in the cold air from the convection blower 11.
a, and the front part has an opening 13b facing the lower part of the hot air outlet 3.

Reference numeral 14 denotes an air outlet frame provided at the lower opening 10 of the duct 9, and its both sides are screwed to support fittings 1b (see FIG. 3) 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 this opening 15 is aligned with the opening 10 of the duct 9, and the frame edge 14 is placed against the inner surface of the front plate 2. The opening 10 of the duct 9 and the warm air outlet 3 are connected to each other.

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 air outlet frame 14, and its inner surface has an arcuate surface. It is 18m long. As shown in FIG. 3, this variable blade 18 has a shaft 19 protruding from both ends thereof.
It is made to pass through a support fitting 1b attached to the holder so that it can be freely rotated as shown by arrow d. 20 is the axis 19 of the variable blade 1B
A linking cam provided on one side of the pin shaft 21 is provided.

Reference numeral 23 denotes a link plate for swinging the variable blade 18, the upper part of which is directly connected to the pin shaft 21 of the linking cam 20 so as to be rotatable, and the lower part of which is a protrusion 23 to which springs 24a and 24b are attached.
m, 23b is 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 24m and 24b
Attach the lower protrusions 23g, 23 of the link plate 23.
It is linked with b.

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 section that outputs a signal S3 such as medium or weak; a2 is a combustion control section that controls the combustion amount of the burner 4 and the air blowing amount of the convection blower 11 based on the output signal S3 from the comparison/judgment section 31; 33m, 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 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. 2 and 7.

When the operation switch 35 (state in FIG. 7) 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 and controlled. 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. 3, 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 2a, 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 X in Fig. 2, when it is medium, it is Y1, 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, for strong combustion and bullet blast, variable blade 1
8 is almost horizontal as shown in Figure 2
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 are inclined considerably as shown in 2, and the hot air flows 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 combustion, and the temperature distribution is almost similar in strong, medium, and weak combustion.

Heating is performed as described above, and here, hot air is guided from the lower part of the hot air outlet 3 through the cold air guide 13 from the convection blower 11 as shown by arrow A in FIGS. 1 and 2. Cold air is blowing out along with the hot air vent. Since the cold air guide 13 has an opening 13b at the lower part of the hot air outlet 3, this cold air is directed to the lower side of the hot air outlet along the hot air outlet or mixed with the hot air outlet. Blows air while keeping the temperature of the object relatively low. Therefore, even if the variable blades 18 are set in a substantially vertical direction, the temperature of the floor surface will not rise abnormally.

In the above embodiment, since the opening 13b of the cold air guide 13 is located at the lower part of the hot air outlet 3, there is no need to provide a cold air outlet separately from the hot air outlet, which simplifies the structure and improves the appearance. This can be achieved by providing a separate cold air outlet below the hot air outlet. Similarly, in this embodiment, the cold air blown out from the lower part of the hot air outlet 3 is taken in from the convection blower 11 to simplify the configuration. Air may be taken in from a fan that supplies air.

Also, the cold air was always blown out from the warm air blowout 3.
This may be done only when the floor surface temperature tends to be high, that is, when the variable blades 18 are made substantially vertical.

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 set in a nearly vertical direction, cold air is blown out from the bottom of the hot air outlet, so the floor surface temperature will not rise abnormally and discolor the floor surface, making it safe and safe to use. can.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a warm air heater according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main parts, Fig. 3 is an enlarged perspective 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 (burner), 11 ... Convection blower, 13 ... Cold air guide (cold air supply means),
16...Guide piece, 18...Variable wing, 2
5... Drive means (motor), 28... Control section. Name of agent: Patent attorney Toshi Nakao, male, idiot 1/-
11 Body 18- Variable blade 38-#1 Part 1 Fig. 3b Fig. 82 Fig. 3 Fig. 4 Fig. 5 Fig. 7 35 / Fig. 8

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 vane that is vertically movable; a drive means for driving the variable vane; a control section that operates the drive means according to the amount of hot air or the amount of heat generated by the heat generating means or by manual operation; A hot air heater comprising a cold air supply means for blowing out cold air from the lower part of a hot air outlet. (2) The hot air heater according to claim 1, wherein the cold air supply means comprises a blower for blowing out warm air and a cold air guide that takes in a part of the air from the blower.