JPH01310258A - Warm-air space heater - Google Patents

Abstract

PURPOSE:To unify much more a temperature distribution in a room regardless of the degree of the like of heating capacity and eliminate unsightly looking due to the remarkable projection of the lower end of a variable blade from the front surface of the main body of a warm- air space heater even when the inclination of the variable blade has been started by a method wherein the variable blade is arranged so that the front surface thereof is positioned on the same plane as the front surface of the main body of the heater substantially while the lower part of the variable blade is supported pivotably. CONSTITUTION:Upon strong combustion and strong ventilation, a variable blade 18 is positioned horizontally substantially as shown by a sign X in a diagram but the variable blade 18 is positioned as shown by the sign Y upon medium combustion and medium ventilation and the flow of warm-air becomes more downward than the same under the strong combustion and strong ventilation. Upon weak combustion and weak ventilation, the variable blade 18 is inclined downward remarkably as shown by the sign Z and warm-air flows along the floor surface of a room. Accordingly, even when the flow speed of the warm-air is weak and the flow of the same is readily affected by a draft, the warm-air arrives at considerably far place compared with the arrival distance of the warm-air so far whereby the temperature distribution in the room becomes similar substantially in each cases of the strong, medium and weak combustion. The lower part of the variable blade 18 is supported pivotably and, therefore, the lower end 18a of the variable blade 18 will never be projected so much from the front surface of a main body 1 even when the pivoting and slanting of the same blade 18 has been started.

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 kind of hot air heater, for example, a fan heater, has a first
As shown in Figure 0, a burner 102 as a heat generating means is provided inside the main body 101, and the smoldering gas from the burner 102 is mixed with the air from the blower 103 installed on the back of the main body, and hot air is blown out from the blower outlet f04 into the room. It is supposed to heat the room. A large number of horizontal loopers 105 are provided in the warm air outlet 104 to guide the warm air in a substantially horizontal direction.

Problems to be Solved by the Invention However, since the looper 105 provided in 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.

In order to solve this problem, the inventor installed a hot air outlet 104 as shown in FIG.
By providing rotatable variable blades 106 on the blades and rotating the variable blades 106 as necessary, the user can prevent hot air from hitting the user himself/herself, and the temperature distribution can also be improved. I thought of something that could be made uniform. However, in this case, as the variable blades 106 are tilted to a substantially horizontal direction, the lower end portions of the variable blades 108 begin to protrude more than the front surface of the main body 101, giving a strange feeling, and the hot air outlet, which serves as a hot air passage, is blocked. Since the length l of the variable blade 106 entering inside, that is, inside the main body, is small, there is a problem that the blowing direction of hot air cannot be changed sufficiently.

The present invention has been made with these points in mind.It is an object of the present invention to provide comfortable heating by sufficiently changing the way hot air is blown out, while at the same time providing a good-looking exterior. The first purpose is to drive the variable blades smoothly, and the second purpose is to smoothly drive the variable blades.

Means for Solving the Problems In order to achieve the above objects, the present invention provides a hot air outlet with a variable blade that is driven downward according to the amount of heat or the amount of hot air generated by the heat generating means or by manual operation. In addition, the variable blade is disposed so as to be substantially flush with the front surface of the main body, and its lower portion is pivotally supported. Further, the lower part of the variable wing is supported pivotably and is always biased to return to a substantially vertical direction.

Effects of the present invention With the above configuration, the variable blades can be made substantially vertical to prevent warm air from hitting the user's face, and the reach of warm air during low heating can be increased. The blowing direction can be reliably changed to a predetermined direction using variable blades, making it possible to obtain comfortable heating. In addition, as the variable blade approaches a substantially horizontal state, the load of the variable blade applied to its shaft portion increases, but this load is due to the fact that the biasing force of the biasing means that attempts to return the variable blade to a substantially vertical direction becomes stronger. As a result, the variable blades can be driven smoothly.

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 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 1-.
The mixture is mixed with combustion gas from the combustion boundary section 7 inside the hot air outlet 3.
It's starting to blow out more.

Reference numeral 14 designates an air outlet frame provided at the lower opening 10 of the duct 9, and its both sides are screwed to support fittings 13 (see FIG. 3) 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 1o 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 Suita mouth frame opening 15.

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 18a. The variable blades 18 are disposed so as to be substantially flush with the front surface of the main body 1 when in a substantially vertical state, and as shown in FIGS. 3 and 4, shafts 19 protruding from both ends are used for heating. It is made to pass through a support fitting 13 attached to the side plate 1a of the machine body and is rotatable as shown by arrow d.

Furthermore, the variable blade 18 is rotatably supported by a shaft 19 provided at its lower part, and one shaft 19 is provided with a spring 17 (see FIG. 4) to always bias it to a substantially vertical state.

Reference numeral 20 denotes a linking cam provided on the other shaft 19 of the soil variable blade 18, and as shown in FIG. 3, a pin shaft 21 is provided. 23
is a link plate for swinging the mud variable blade 18, one part is rotatably directly connected to the pin shaft 21 of the linking cam 20, and the lower part has a protruding part 23a12 to which the springs 24m and 24b are attached.
3b 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 spring 24 and 24b are attached and linked to the lower protrusion 23a123b 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. 5 and 6. In other words, 29 is a temperature detection section consisting of a thermistor, etc., 3o 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 33, 33b, . On the other hand, in FIG. 6, 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 mud 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 on one day, as shown in FIG. 2, factor 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 fifth
In the case of the figure, if the user presses any of the switches 33m, 33b..., 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 the motor 25 rotates, the drive shaft 27 of the drive cam 26 rotates in the direction shown in FIG. Descend. As a result, the linking cam 20 connected to the link plate 23 by the pin shaft 21 is
The integrated variable blade 1 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. , the warm air is blown out from the bottom, preventing the hot air from hitting the user's face directly.

Moreover, in the case of FIG. 6, 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, and when it is medium, it is 71, 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, 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. 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 it 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.

Here, as is clear from X%Y,z in Fig. 2, the variable blade 1
8 has its lower part pivoted, so even if it rotates and begins to tilt, the lower end 18a of the variable wing 18 will not protrude from the front surface of the main body 1, giving a strange feeling. In contrast, variable wing 1
The upper side of the duct 8 largely protrudes inside the hot air outlet 3 which serves as a hot air passage, and the direction of hot air flowing down from the upper part of the duct can be efficiently changed.

On the other hand, as the variable blade 1 rotates and the inclination increases, the force W applied to the shaft support of the variable blade 1B changes from W1 → W2 → W
3, and a large force is required to drive the variable blades 18, which may prevent smooth operation.

However, since the variable blade 18 is always biased to be substantially vertical by the spring 17, as the inclination of the variable blade 18 increases, the force F that returns the variable blade 18 to the vertical direction increases. As the slope of 18 increases, the force that increases from W1 to W2 to W3 is canceled out. Therefore, the force driving the variable blade 18 is always constant regardless of its degree of inclination, and the motor 25 can smoothly drive the variable blade 18.

Next, when heating is being performed as described below and the operation is stopped, the variable blade drive unit 34 loses output from the combustion control unit 32 or the switches 33m, 33b, etc. (as a result, the motor 25 returns to its original state). Rotate to the state, i.e. arrow a in Figure 3
Rotate it to the opposite side.

As a result, the link plate 23 is lifted in the opposite direction, the linking cam 20 is rotated in the opposite direction to the arrow C, and the variable blade 18 is returned to its original state, that is, in a substantially vertical direction. At this time, the variable blade 18 becomes substantially flush with the front surface of the main body 1, resulting in a clean appearance.

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.

Furthermore, even if the variable blade begins to tilt, its lower end will not protrude significantly from the front surface of the main body and become unsightly, and when it is in a substantially vertical state, it will be substantially flush with the front surface of the main body, resulting in a good appearance.

Furthermore, as the variable blade begins to tilt, the variable blade protrudes largely into the hot air passage, so that the blowing direction can be reliably changed.

Furthermore, even if the variable blade begins to tilt, the force applied to its shaft support can be maintained at a substantially constant level due to the urging of the spring, and the variable blade can always be driven smoothly.

[Brief explanation of the drawing]

Fig. 1 is a cross-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, Figs. 3 and 4 are enlarged perspective views of the same, and Figs. 5 and 6. FIG. 7 is a block diagram showing the control section, FIG. 7 is an explanatory view of the operation, FIG. 8 is an external perspective view, FIG. 9 is a sectional view of a conventional example, and FIG. 10 is a sectional view of another conventional example. 1...Main body, 3...Warm air outlet, 4.
... Heat generation means (burner), 11 ... Convection blower, 17 ... Force means (spring), 18
...Variable wing, 19...Axis, 25...
. . . Drive means (motor), 28 . . . Control unit. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
Book 3- Warm air outlet 4...-Burner (-Generating means) 11-Ketane-use WL crane 113 ・-q Projected wing ffl -Control jaw part Fig. 1 19- Axis Fig. 2 Fig. 3 Fig. 5 Figure foil 6 Figure 8 Figure 35 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 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 a variable blade provided at the hot air outlet so as to be movable up and down, and the variable blade is operated in conjunction with the amount of heat generated by the heat generating means and/or the amount of hot air, or by manual operation. a driving means, the variable blade is disposed so that its front surface is substantially flush with the front surface of the main body, and its lower portion is pivotally supported. (2) 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 a variable blade provided at the hot air outlet so as to be movable up and down, and a drive means for operating the variable blade, and the variable blade has a lower portion pivotally supported and is moved in a substantially vertical direction by an urging means. Energized hot air heater.