JPH02267461A - Hot air heater - Google Patents

Abstract

PURPOSE:To reduce an irregular distribution of temperature between an upper part and a lower part of a room and to enable a comfortable heating to be carried out by a method wherein in case where variable vanes vertically rotatable around a hot air blowing port is set upwardly, a heating calorie of a heat generating means is set to a weak value or a generation of hot air is stopped. CONSTITUTION:If a temperature of an upper part of a room is increased during heating operation, a changing-over part 35 is operated to set a setting of variable vanes angle to be upward. with such an arrangement, a control part 33 may output at first an upward signal to variable vanes driving part 34 and the variable vanes 18 are set to be inclined upwardly as indicated by alpha, thereafter a combustion in a burner 4 is stopped and the air is rotated in an air blower 11. Hot air from this air blower 11 is not applied as a hot air due to the fact that the combustion of the burner 4 is stopped, and the air is blown upwardly to cause the hot air at the upper part of the room to be circulated downwardly and an entire room is unformed as its upper and lower portions in the room. In this case, even if the air blower 11 is rotated under a weak combustion without stopping any combustion, the air in the room can be circulated.

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 ART In general, this type of hot air heater, such as a fan heater, is provided with a burner 102 as a heat generating means in a main body 101, as shown in FIG. The warm air is mixed with the air from the blower 103 and is blown out from the warm air outlet 104 to heat the room. The warm air outlet 104 is provided with a large number of horizontal loopers 105 to guide the warm air in a substantially horizontal direction.

Problems to be Solved by the Invention However, although the above-mentioned hot air heater uses hot air for heating, the temperature at the top tends to be high. Sometimes I felt uncomfortable.

In order to avoid this, when the hot air heater was turned off, the indoor temperature dropped, making the room feel cold and uncomfortable, 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 low 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 (excluding the ceiling and corners of the room) that the user usually uses. As the heating becomes weaker to medium 1 or less, the amount of air blown from the blower 103 also becomes weaker, and as a result, the draft effect of the hot air becomes relatively stronger, and the distance that the hot air reaches becomes shorter, and only the area near the heater becomes weaker. There was a large difference in the indoor temperature distribution between high 1 and low 1, such as uneven temperature distribution that caused the user to feel uncomfortable.

The present invention was made in consideration of such problems, and is aimed at providing comfortable heating.

Means for Solving the Problems In order to achieve the above object, the present invention provides a first hot air heater that includes a main body having a hot air outlet, a heat generating means provided in the main body, and supplying air to the heat generating means. a blower for blowing out hot air from the warm air outlet; a variable blade provided at the hot air outlet that can be moved up and down; a switching unit for setting the variable blade upward or downward; When set, the controller is configured to rotate the blower by fixing the amount of heat of the heat generating means to a weak value or stopping heat generation, and the second hot air heater has a hot air outlet. A main body, a heat generating means provided in the main body, a blower that supplies wind to the heat generating means and blows out warm air from the hot air outlet, and a variable blade that is provided at the hot air outlet and is movable up and down. and a switching part for setting the variable blade upward or downward, and when the variable blade is set downward, the downward inclination angle of the variable blade is changed according to the amount of hot air or heat generation, and when the variable blade is set upward, heat is generated. The blower is configured to include a control section that rotates the blower while fixing the amount of heat of the means to a weak level or stopping heat generation.

Effect of the present invention With the above configuration, by setting the variable blades of the hot air outlet upward, air can be supplied upward from the hot air outlet to circulate the air in the room, and the temperature at the top and bottom of the room can be almost uniform. It can be done. In addition, in the second hot air heater, the downward inclination angle of the variable blades during heating changes depending on the combustion amount, so that the temperature distribution in the room during heating becomes more uniform.

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 in the partition Fi, 6, and a honeycomb-shaped exhaust gas purification catalyst 8 is provided in the upper opening. 9
A duct is provided inside the heater main body 1 so as to cover the combustion tube 7, and has an opening 10 formed in the lower part of the front surface. 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 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 denotes an air outlet frame provided at the lower opening lO 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 communicated with each other. 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 air outlet frame 14 so as to be located above the hot air outlet 3. The variable blade 18 is formed into a medium-wide shape so as to cover about half of the airway of the air outlet frame 14, and its inner surface is shaped like an arc. As shown in FIG. 2, this variable blade 18 has a shaft 19 protruding from both ends thereof, which is passed through a support fitting 13 attached to the side plate 1a of the heater main body, so that the variable blade 18 can be rotated as shown by arrow d. 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. 23 is a link plate for swinging the variable blade 18, the upper part of which is connected to the linking cam. Projections 23a and 23b are rotatably connected directly to the pin shaft 21 of 20 and have springs 24a and 24b attached to their lower parts.
is the provision.

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 After attaching the springs 24a and 24b, the lower projections 23a and 23b of the link plate 23
It is linked with.

Reference numeral 28 denotes a controller for controlling the combustion section and the drive motor 25, and this is constructed as shown in the block diagram of FIG. 4. That is, 29 is a temperature detecting section consisting of a thermistor or the like, 30 is a room temperature setting section for setting the indoor temperature, and 31 is a comparison between the signal S from the temperature detecting section 29 and the signal S8 from the room temperature setting section 30, and detects the difference. 32 is a variable blade angle setting section, 32a is an upward setting section, and 32b is a downward setting section. 33 sets the variable blade upward or downward based on the output from the variable blade angle setting unit 32, and also determines the combustion amount of the burner 4 and the air flow of the convection blower 11 based on the output signal S3 from the determination unit 31. Control the air volume? The rotation of the motor 25 is controlled via the variable blade drive section 34 using the signal S. Reference numeral 35 denotes a switching section that switches the angle of the variable blade either upward or downward.

Here, as shown in the flowchart of FIG. 5, the control section 33 first determines whether or not the switching section 35 is in the upward direction, and if it is not in the upward direction, sets the variable blade angle downward to lower the room temperature. Check whether the temperature is higher than the set temperature or not, and if it is higher than the set temperature, stop the operation. If the temperature is below the set temperature, the combustion amount of the burner 4, the rotation speed of the blower 11, and the downward inclination angle of the variable blade are set to predetermined values based on the output from the determination unit 31. On the other hand, if the switching part 35 is facing upward, the variable blade angle is set upward, and then the combustion amount of the burner 4 and the rotation speed of the blower 11 are set to predetermined values (in this embodiment, combustion is stopped and the air blower is turned upward). Ill is medium rotation)
Set to . When the operation is stopped, the variable blades are set to the stop position (in this embodiment, approximately vertically).

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 36 (see FIG. 7) is turned on from this state, the variable blades 18 are opened in a downwardly inclined manner if the switching section 35 is set downward. And temperature detection part 2
9 and the output S from the determination unit 31 that is generated based on the output from the room temperature detection unit 30, the control unit 33 is actuated and generates a control signal S4 to start combustion according to a predetermined sequence, and the convection blower 11
Rotate. The downward inclination angle of the variable blade 18 changes according to the signal S4 from the control unit 33, and when it is strong, the third
It changes in conjunction with the combustion amount and the amount of air blown by the convection blower, as shown in X in the figure, and Z when it is a little less than 71. Therefore, during strong combustion and projectile wind, the variable blade 18 is approximately horizontal as shown in FIG.

As a result, the flow of warm air becomes more downward than when it is strong, and the hot air becomes like Y' in Figure 6, reaching farther than the conventional one. Similarly, weak combustion and weak wind blowing. At this point, the variable blades 18 will be inclined considerably downward as indicated by Z, and the hot air will flow along the floor surface as indicated by Z' in FIG. 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, which is strong.

The temperature distribution is almost similar to that of middle school.

Note that the downward inclination angle of the variable blade 18 is changed as follows.

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.

On the other hand, if the temperature in the upper part of the room becomes high during heating as described above, the switching unit 35 is operated to set the variable blade angle setting upward. As a result, the control unit 33 first outputs an upward signal to the variable blade drive unit 34 to move the variable blade 18 as shown in FIG.
Set it up so that it slopes upward like this. And then burner 4
Stop combustion and blow air I! Rotate 11 inside. Since the burner 4 has stopped burning, the air from the blower 11 does not turn into hot air, but is blown upward as shown in Figure 6 α', circulating the hot air in the upper part of the room downwards, causing the upper and lower parts of the room to be circulated. Equalize the temperature. At this time, even if the blower 11 is rotated with weak combustion without stopping the combustion, the air in the room can be circulated, so it is not necessarily necessary to stop the combustion. In this case, heating is continued at a low level without stopping combustion, so the room temperature does not drop suddenly and more comfortable heating is possible.

Next, when heating is performed as described above and the operation is stopped, the variable blade drive section 34 loses the output from the control section 33 and rotates the motor 25 to its original state. As a result, the link plate 23 is lifted upward, and the linking cam 20
is rotated in the opposite direction to arrow C to return the variable blade 18 to its original state, that is, to return to the substantially vertical direction.

In addition, in the above embodiment, the variable blade was explained as one piece, but
This may be a plurality of sheets, and any other structure may be used as long as it achieves the intended purpose. For example, the switching of the switching section 35 is not done manually but by the judgment section 31.
The switch may be automatically switched when the output from, that is, the room temperature exceeds a set temperature.

Effects of the Invention As described above, the first hot air heater of the present invention can circulate indoor air with the air from the blower by changing the variable blade provided at the hot air outlet from a downward opening to an upward opening. In addition to reducing the temperature unevenness in the upper and lower parts of the room and providing comfortable heating, it is possible to simplify the configuration by simply changing the direction of the variable blades, eliminating the need to provide a separate air outlet. In addition, in the second hot air heater, the inclination angle of the downwardly variable blades is changed according to the amount of heat generated, so that unevenness in indoor temperature during heating can be reduced, and more comfortable heating can be achieved.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a warm 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 Fig. 4 is a block diagram showing the control section. 5 is a flowchart showing the control operation, FIG. 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 generating means (burner), 11 ... Convection blower, 18 ... Variable blade, 25 ...
・Driving means (motor), 33...Control unit, 35
・・・・・・Switching section. Name of agent: Patent attorney Shigetaka Awano
(3---t eyebrows (W missing erotic 4...)\゛-su (hot brother's hand view υ)/-1 girl 1" 5M, month 1 Shiso E-oki 16...
Guide piece 18 - variable wing 2nd figure Fig.

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 switching unit that sets the variable blade upward or downward; A hot air heater comprising: a control unit that rotates the blower. (2) 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 hot 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 switching unit that sets the variable blade upward or downward; and a control section that rotates the blower while fixing the amount of heat of the heat generating means to a weak level or stopping heat generation when the upward setting is made.