JPH028655A - Hot air heater - Google Patents

Abstract

PURPOSE:To provide a comfortable heating condition by a method wherein a variable vane to be driven in response to the amount of heat generated by a heat generating means or the amount of hot air or manually and a cold air guide for blowing cold air fed from a blower from between an upper part of a hot air blowing port and the variable vane are provided. CONSTITUTION:As an operating switch is turned on, a combustion controlling part 32 is operated in response to an output S3 from a comparison discriminating part 31 generated in response to an output of a temperature sensing part 29 and a room temperature sensing part 30 so as t generate a controlling signal S4 and start a combustion in accordance with a predetermined sequence and at the same time a convection air blower 11 is rotated. When an user pushes either one of switches 33a, 33b,..., a driving part 34 for the variable wing 18 may generate a signal S5 to drive a motor 25 and to rotate the variable wing 18 to a predetermined angle. Accordingly, a room is heated and in turn if an occupant may not wish to receive any hot air, he may operate one of the switches 33a, 33b,... to cause the variable wing 18 to show substantially a vertical orientation, resulting in that the hot air will be blown downwardly and so the air may not strike directly against a face of the occupant.

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 I stopped the hot air heater, the indoor temperature dropped and I felt cold (I could not get 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.

The present invention solves these problems, and aims to provide comfortable heating and improve safety.

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 rotatably driven in the vertical direction according to the amount of heat generated by the heat generating means or the amount of hot air by manual operation. This configuration includes a cold air guide that blows out cold air from a convection blower from between the end of the lSi wind outlet and the variable blade.

Function: With the above configuration, the variable blades of the present invention can be made approximately vertical to prevent hot air from hitting the user's face, and even during low-temperature heating, the hot air can reach a relatively far distance, making the user comfortable. In addition, since the cold air is blown from the top of the warm air, and the rise of the hot air is suppressed by the cold air of C, the warm air can reach a considerable distance even during low heating. In addition, the temperature of the upper part of the hot air outlet and variable blades, which tend to reach relatively high temperatures, can be maintained at a relatively low temperature, improving safety.

Embodiments Below, 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 covers 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 wall 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 tact which is provided in the heater main body 1 so as to cover the combustion tube 7, and has an opening 9a formed in the lower part of the front surface. Reference numeral 1o denotes a cold air guide provided in the tactile chamber 9, with a guide passage 10a between the tactile top wall and the guide passage 10a for guiding air from a convection blower to be described later.
At the same time, the front lower part projects above the hot air outlet 3 to form a cold air outlet 10b. Reference numeral 11 denotes a convection blower installed facing the rear of the tactile chamber, which is covered by a fan guard 12, and supplies indoor air sucked in from outside the heater body 1 into the tactile chamber, and is passed through the 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 9a of the tactile chamber 9, and its both sides are screwed into supporting metal fittings 13 (see FIG. 3) attached to the side plates 1a of the heater main body 1. This outlet frame 14 is formed to have a concave cross section and an opening 15 is formed in its bottom wall, and this Di 1015 is aligned with the opening 9a of the tact 9, and the frame edge 14a is brought into contact with the inner surface of the front plate 2. The opening 9a of the tact 9 and the hot air outlet 3 are connected.

A substantially horizontal guide piece 16 is attached to the lower edge of the outlet frame opening 15.

Reference numeral 18 denotes a variable blade provided on the outlet frame 14 so as to be located at the lower part of the hot air outlet 3. The variable blade 18 is wide (formed) so as to cover about half of the road of the hot air outlet 3, and has an arcuate inner surface. As shown in FIG. 3, 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, and is 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.

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 23a to 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 33a, 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 is located in a substantially vertical direction as shown in FIG. 7.

When the operation switch 35 (see 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. 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
emits a signal S5 to drive the motor 25 and rotate the variable blade 18 at a predetermined angle.In other words, the rotation of the motor 25 causes the drive shaft 27 of the drive cam 26 to move in the direction of arrow a as shown in FIG. The link plate 23, which is rotated and linked via springs 24a and 24b, descends as shown by the arrow. 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 33a, 33b, etc. so that the variable blades 18 become approximately vertical. As a result, the hot air is blown downward, so that the hot air does not directly hit 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. 2, when it is medium, it is 2 when it is 11, and when it is weak.
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 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 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 combustion, with strong, medium,
Even if it is weak, the temperature distribution is almost similar.

Heating is performed as described above, and the flow of warm air will now be explained in detail with reference to FIGS. 1 and 2. First, in the duct 9, the wind from the convection blower 11 and the combustion gas flowing out from the combustion tube 7 mix to form warm air, but in the upper part of the tact, the amount of combustion gas is large and the temperature becomes high, and in the lower part of the tact, the combustion tube 7
There is a lot of hot air from the convection blower 11 that circulates around the outer periphery of the combustion tube 7 and exchanges heat with the combustion tube 7, resulting in a relatively low temperature. Then, the high-temperature warm air at the top of the tactile cycle goes from the northern part of the tactile cycle to the hot air outlet 3 and is blown downward, as indicated by the thick arrow C in Figure 2. As the variable blade 18 becomes vertical as shown in Y-2 and the amount of hot air decreases, this hot air is guided to the circular arc surface 18a of the variable blade 1 and is blown out further downward.

Furthermore, the upward force of the hot air is suppressed by the cold air from the convection blower 11 blowing out from the upper part of the hot air, and the hot air is blown further downward. Therefore, the distance that the warm air can reach is extremely large,
The comfortable space expands to a large extent. In particular, in this embodiment, the outlet portion of the cold air passage 10m formed by the cold air guide 10 is
Since it has a tapered shape that becomes narrower as it approaches the cold air outlet 10b, the blowing speed of the cold air A becomes relatively faster, and the rise of the hot air C is effectively suppressed.

In addition, the cold air is blown out from the upper part of the hot air outlet 3 and also along the outer surface of the variable blade 18, so the cold air is blown out from the upper part of the hot air outlet 3 and also along the outer surface of the variable blade 18. The outer surface temperature of the variable blade 18 is also maintained low.

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 particular, since the cold air is blown out from the top of the hot air, the distance that the hot air can reach is considerably longer due to the effect of the variable blades, and the comfortable space inside the room is greatly improved.

Furthermore, since the cold air is discharged from the upper part of the hot air outlet, the temperature near the upper part of the hot air outlet and the outer surface of the variable blade, which tend to become high, can be maintained at a relatively low temperature, resulting in high safety.

Moreover, since the cold air is taken in from the convection blower, there is no need to provide a dedicated blower, and the configuration can be simplified.

[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 generating means (burner), 7 ... Combustion tube, 9 ... Takt, 9a ... Opening,
10...Cold air guide, 11...Convection blower, 18...Variable blade, 25...Driving means (motor), 28...・Control unit. Name of agent: Patent attorney Toshio Nakao (1 person)
Figure 1 Main body 18-possible X: s2? 8- Iku Rimon

Claims (1)

[Claims] a main body having a hot air outlet; a heat generating means provided in the main body; a duct surrounding the heat generating means; a blower for supplying air into the duct and blowing out hot air from the hot air outlet; A variable blade is provided at the hot air outlet so as to be rotatable in the vertical direction and is driven according to the amount of heat or the amount of hot air generated by the heat generating means or by manual operation, and the hot air outlet is configured to connect the cold air from the blower to the hot air outlet. A warm air heater consisting of a cold air guide that blows out from between the upper part of the blade and variable blades.