JPH0762564B2 - Hot air heater - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air heater that heats a room using warm air.

2. Description of the Related Art Generally, this kind of hot air heater, for example, a fan heater is
As shown in the figure, a burner 102 which is a heat generating means is provided in the main body 101.
The combustion gas from the burner 102 is mixed with the air from the blower 103 provided on the rear surface of the main body to blow out from the warm air outlet 104 to heat the inside of the room. A large number of horizontal louvers 105 are provided at the warm air outlet 104 to guide the warm air in a substantially horizontal direction.

However, since the louver 105 provided at the hot air outlet 104 is fixed to the main body, it is impossible to change the blowing direction of the hot air, and the interior of the room warms up and the user's face etc. Even if you want to prevent the hot air from hitting the room, the user must either leave the hot air heater or move the hot air heater. I was hit and sometimes felt uncomfortable. When the operation of the warm air heater was stopped to avoid this, the room temperature fell and it felt cold, so comfortable heating could not be obtained.

Further, since the louver 105 is fixed and the direction of warm air cannot be changed, there is a problem in that there is a large difference in the temperature distribution in the room during strong heating, medium heating, and weak heating. In other words, during strong heating, the air blown from the blower 103 is strong, so warm air is blown out far and the living space normally used by the user (a space other than the ceiling or the corners of the room) has a substantially uniform temperature distribution. However, the amount of air blown from the blower 103 also becomes weaker as it becomes weaker and weaker, and as a result, the draft action of warm air becomes relatively strong and the warm air reach becomes short and only the area near the heater gets hot. As a result, there is a large difference in the temperature distribution in the room between strong, medium, and weak such as uneven temperature distribution, and the user feels uncomfortable.

Therefore, the present inventor provides a rotatable variable blade 106 at the hot air outlet 104 as shown in FIG. 8, and rotates the variable blade 106 as necessary so that the user can warm the user himself. We considered that it is possible to prevent the wind from hitting it and to make the temperature distribution more uniform. However, in this case, variable wings
Variable blade 1 as 106 is tilted to make it approximately horizontal 1
The lower end of 06 begins to protrude from the front surface of the main body 101 to a large extent, and it feels strange, and since the variable blade 106 has a small entering dimension l inside the hot air outlet serving as the hot air passage, There was a problem that the blowing direction could not be changed sufficiently.

The present invention has been made in consideration of such points, and it is possible to sufficiently change the blowing direction of warm air so that comfortable heating can be obtained, and at the same time, the appearance should be good-looking. The first purpose is to make it possible to drive the variable blade smoothly, and the second purpose is to make it possible to drive the variable blade smoothly.

Means for Solving the Problems In order to achieve the above object, the present invention provides a main body having a hot air outlet, heat generating means provided in the main body, a duct surrounding the heat generating means, and a wind in the duct. An air blower that supplies and blows out warm air from the hot air outlet, a variable blade that is provided at the hot air outlet so as to be rotatable up and down, and a heat amount or a warm air amount generated by the heat generating means for the variable blade, or both. The duct is provided with a driving unit that operates in conjunction with one of the ducts, and the duct has an opening in its lower portion that communicates with the hot air outlet, and wind from a blower blown into the duct from the upper portion in the opening. The variable vanes are configured to flow downward and blow out from the hot air outlet, while the variable vanes pivotally support the lower part of the variable vane, and the upper part of the variable vane rotates toward the opening side of the duct and is sent from the opening of the duct. The variable vanes are arranged so as to be guided in a predetermined direction, and the variable vanes are arranged in a substantially vertical state when the operation is stopped so that the front surface thereof is substantially flush with the front surface of the main body. Further, the variable vane has a structure in which the lower part thereof is axially supported and is urged so as to always return in a substantially vertical direction.

With the above-described structure, the present invention makes it possible to prevent the warm air from hitting the face of the user and to increase the reach of the warm air because the variable blades rotate in the substantially vertical direction during weak heating.
Moreover, the blowing direction of the warm air can be surely changed to the predetermined direction by the variable blades, and comfortable heating can be obtained. Further, the load of the variable blade applied to the shaft support increases as the variable blade approaches a substantially horizontal state, but the load is such that the biasing force of the biasing means for returning the variable blade to the substantially vertical direction becomes stronger. Will be offset by, and the drive of the variable blade will be smooth.

EXAMPLE An example of the present invention will be described below with reference to the drawings. 1 is a heater body, 2 is a front plate mounted on the front surface of the heater body 1, and has a warm air outlet 3. Reference numeral 4 denotes a burner provided in the heater main body 1, which serves as heat generating means. In this embodiment, a vaporization type burner for vaporizing and burning kerosene is used. A burner case 5 covers the lower portion of the burner 4 and is attached to the partition plate 6. Reference numeral 7 denotes a combustion cylinder that covers the upper portion of the burner 4, which is erected on the partition plate 6, and a honeycomb-shaped exhaust gas purifying catalyst 8 is provided at the upper opening. Reference numeral 9 is a duct provided in the heater main body 1 so as to cover the combustion cylinder 7, and an opening 10 is formed in the lower front portion. Reference numeral 11 denotes a convection blower mounted so as to face the rear of the duct, which is covered by a fan guard 12 and supplies the room air sucked from the outside of the heater main body 1 into the duct, and then from the combustion cylinder 7 in the duct 9. It is made to be mixed with the combustion gas of and blown out from the hot air outlet 3.

14 is an outlet frame provided in the lower opening 10 of the duct 9,
Support fittings 13 with both sides attached to both side plates 1a of the heater body 1
(See Fig. 3). The outlet frame 14 is formed to have a concave cross section, and an opening 15 is formed in the bottom wall thereof. The opening 15 is aligned with the opening 10 of the duct 9 and the frame edge is formed.
14a is brought into contact with the inner surface of the front plate 2 so that the opening 1 of the duct 9
0 and the hot air outlet 3 are connected. A guide piece 16 in a substantially horizontal direction is attached to the lower edge of the outlet frame opening 15.

The reference numeral 18 designates an outlet frame 14 so as to be located above the warm air outlet 3.
The variable blade provided on the upper part is formed wide so as to cover approximately the upper half of the outlet frame 14, and its inner surface side is an arcuate surface 18a. The variable vanes 18 are arranged so as to be substantially flush with the front surface of the main body 1 in a substantially vertical state.
As shown in FIG. 4 and FIG. 4, the shafts 19 projecting from both ends thereof are passed through the support fittings 13 attached to the side plate 1a of the main body of the heater, and the arrow d
It is rotatable as shown by. Further, the variable vane 18 is provided with a shaft 19 at its lower portion to support the shaft, and at the same time, one shaft 19
A spring 17 (see FIG. 4) is provided on the shaft and is urged so as to always be in a substantially vertical state. 20 is the other shaft 19 of the variable blade 18
The link cam is provided with a pin shaft 21 as shown in FIG. 23 is a link plate for swinging the variable blade 18,
The upper part is directly rotatably connected to the pin shaft 21 of the linkage cam 20,
Protrusions 23a and 23b for mounting the springs 24a and 24b are provided on the lower part. Reference numeral 25 is a drive motor that moves the link plate 23 up and down, and is composed of a stepping motor that can rotate in the forward and reverse directions. A drive cam 26 is attached to the motor shaft, and The springs 24a and 24b are attached and linked with the lower protrusions 23a and 23b of the link plate 23.

Reference numeral 28 is a control section for controlling the combustion section and the drive motor 25, which is constructed as shown in the block diagram of FIG. That is, 29 is a temperature detection unit including a thermistor, 30 is a room temperature setting unit that sets the room temperature, 31 is a signal S ₁ from the temperature detection unit 29 and a signal S ₂ from the room temperature setting unit 30 is compared, and Based on the output signal S ₃ from the comparison / determination unit 31, the comparison / determination unit 32 outputs a signal S ₃ such as strong / medium / weak according to the difference, and the combustion amount of the burner 4 and the convection blower 11 A combustion control unit that controls the air flow rate outputs a signal S ₄ that controls the combustion amount and the air flow rate to the variable blade drive unit 34. Then, the variable blade drive unit 34 outputs a signal S ₅ for controlling the rotation angle of the variable blade 18 to the motor 25 based on the signal S ₄ .

The operation of the hot air heater configured as above will be described below.

First, before the start of operation, the variable vanes 18 are positioned in a substantially vertical direction as shown in FIGS. 2 and 7.

When the operation switch 35 (see FIG. 7) is turned on from this state, the combustion control unit 32 is activated by the output S ₃ from the comparison determination unit 31 generated based on the outputs from the temperature detection unit 29 and the room temperature detection unit 30, The control signal S ₄ is issued to start combustion in accordance with a predetermined sequence, and the convection blower 11 is rotated. Then, based on the control signal S ₄ from the combustion control unit 32, the variable vane driving unit 34 issues a signal S ₅ to drive the motor 25 and rotate the variable vane 18 at a predetermined angle.

That is, as shown in FIG. 3, the drive shaft 27 of the drive cam 26 is rotated by the rotation of the motor 25 as shown by the arrow a, and the link plate 23 linked through the springs 24a, 24b is shown by the arrow b.
To descend. As a result, the linking cam 20 connected to the link plate 23 and the pin shaft 21 rotates as indicated by the arrow c, and the variable blade 18 integrated through the linking cam 20 and the shaft 19 rotates as indicated by the arrow d. is there.

Here, the rotation angle of the variable vanes 18 varies depending on the signal S ₄ from the combustion control unit 32. When the force is strong, the amount of combustion and convection is X as shown in FIG. 2, when it is medium, it is Y, when it is weak, it is Z. It changes according to the amount of air blown by the blower. Therefore, during strong combustion and strong air blowing, the variable blades 18 are substantially horizontal as shown in FIG. 2X, but during medium burning and medium air blowing, the variable blades 18 are as shown in FIG. Therefore, the flow of warm air is downward as compared to when it is strong, and the hot air becomes like Y ′ in FIG. 6, and reaches farther than the conventional one. Similarly weak combustion
When the air is weakly blown, the variable blades 18 incline considerably downward like Z, and the hot air flows along the floor surface as shown in Z'of FIG. Therefore, even if the flow velocity of the warm air is low and it is easily affected by the draft, the warm air reaches farther than the conventional one. That is, the temperature distribution in the room is close to the temperature distribution during strong combustion, and the temperature distribution is similar for strong, medium, and weak.

Here, as is clear from X, Y and Z in FIG.
Since the lower part of the variable blade 18 pivotally supports its lower part, the lower end part 18a of the variable blade 18 does not project so much from the front surface of the main body 1 and gives an odd feeling. Disappears. In addition, the upper side of the variable blade 18 can be largely projected to the inside of the hot air outlet 3 that serves as the hot air passage, and the blowing direction of the hot air flowing down from the upper portion of the duct can be efficiently changed.

On the other hand, as the variable blade 18 rotates and the inclination increases, the force W applied to the shaft support of the variable blade 18 gradually increases as W ₁ → W ₂ → W _3, and the force for driving the variable blade 18 is large. Things may be needed and the operation may not be performed smoothly. However, since the variable blade 18 is always biased by the spring 17 so as to be substantially vertical, the force F for returning the variable blade 18 to the vertical direction increases as the inclination of the variable blade 18 increases, and the variable blade 18 is W ₁ →
W ₂ → W _{3 It} becomes to offset the increasing force. Therefore, the force for driving the variable blade 18 is always constant regardless of the degree of inclination, and the motor 25 can be smoothly driven.

Next, when the heating is performed as described above and the operation is stopped, the variable blade drive unit 34 loses the output from the combustion control unit 32 and rotates the motor 25 to the original state, that is, the arrow a in FIG. And rotate it to the opposite side. This makes the link board
23 is lifted upward, the linkage cam 20 is rotated in the direction opposite to the arrow c, and the variable blade 18 is returned to its original state, that is, substantially vertically rotated. At this time, the variable vanes 18 are substantially flush with the front surface of the main body 1 and have a neat appearance.

In the above embodiment, the variable blade is explained as one piece,
This 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, in the warm air heater of the present invention, the variable blade is rotated in conjunction with either or both of the amount of heat generated by the heat generating means and / or the amount of warm air. It becomes almost vertical and hot air does not hit the user's face directly, and the temperature distribution in the room can be made more uniform regardless of the strength of the heating capacity, etc., and comfortable heating without discomfort You can

Even if the variable vanes start to incline, the lower end of the variable vane does not significantly project from the front surface of the main body and is unsightly, and it is substantially flush with the front surface of the main body when it is in a substantially vertical state, so it looks good both during operation and when stopped Will be things. Further, as the variable blade begins to incline, the variable blade largely projects into the warm air passage, so that the blowing direction can be surely changed.

Further, even if the variable blade starts to incline, the force applied to the shaft supporting portion can be maintained substantially constant by the bias of the spring, and the variable blade can always be smoothly driven.

[Brief description 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 sectional view of the same part, FIGS. 3 and 4 are enlarged perspective views thereof, and FIG. 5 is the same control. Block diagram showing a part, 6th
FIG. 7 is an explanatory view of the operation, FIG. 7 is an external perspective view, FIG. 8 is a sectional view of a conventional example, and FIG. 9 is a sectional view of another conventional example. 1 ... Main body, 3 ... Warm air outlet, 4 ... Heat generating means (burner), 11 ... Convection blower, 17 ... Energizing means (spring), 18 ... Variable blade, 19 ... Shaft, 25: drive means (motor), 28: control section.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeo Morimoto 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP 62-59340 (JP, A) Actual 60-104652 (JP, U) Actual 48-15970 (JP, Y1) JP 61-9544 (JP, B2)

Claims (2)

[Claims] 1. A main body having a hot air outlet, heat generating means provided in the main body and a duct surrounding the heat generating means, and air is supplied into the duct to blow out hot air from the hot air outlet. A blower for rotating, a variable blade provided at the hot air outlet so as to be rotatable up and down, and a driving means for operating the variable blade in conjunction with either or both of the heat quantity and the warm air quantity generated by the heat generating means. The duct is provided with an opening at its lower portion that communicates with the hot air outlet so that the wind from the blower blown into the duct flows downward from the upper portion of the opening and blows out from the hot air outlet. In addition, the variable blade is configured to pivotally support its lower portion, and the upper portion is rotated toward the opening side of the duct to guide the warm air sent from the opening of the duct in a predetermined direction, And above Variable vanes warm-air heating machines the front is disposed so that the front and substantially flush with the body in a substantially vertical position when the operation is stopped. 2. The warm air heater according to claim 1, wherein the variable blade is vertically urged by an urging means.