JPH0694947B2 - 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 (the 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, so that the draft action of warm air becomes relatively strong and the reach distance of warm air becomes short, only near the heater. There is a large difference in the indoor temperature distribution between strong, medium, and weak such as uneven temperature distribution that becomes hot, and the user feels uncomfortable.

Therefore, the present inventor provides a rotatable variable blade at the hot air outlet and rotates the variable blade as necessary,
We considered that the user can prevent the user from hitting the warm air and that the temperature distribution can be made more uniform. However, in this case, if the variable blades are set almost vertically to prevent the warm air from hitting the user, the floor temperature rises abnormally because the warm air hits the floor immediately after being blown out from the warm air outlet, Problems such as discoloration of the surface occurred.

The present invention has been made in consideration of such problems,
The purpose is to ensure comfortable heating and to improve safety by preventing discoloration of the floor.

Means for Solving the Problems The present invention provides a variable blade that is driven in the vertical direction in accordance with the amount of heat or the amount of warm air generated by a heat generating means in a hot air outlet to achieve the above object, or by manual operation, A structure is provided in which cold air supply means is provided for blowing cold air from the lower part of the hot air outlet.

Effect The present invention makes it possible to prevent the warm air from hitting the face of the user by making the variable blades substantially vertical by the above-described configuration, thereby providing comfortable heating and even in such a state. The warm air is prevented from coming into direct contact with the floor surface by the cold air blown from below, or the temperature is lowered by mixing with the cold air, so that the floor surface does not become high enough to be discolored. In addition, if the variable blades provided at the hot air outlet are rotated and the inclination angle of the variable air is changed to change the blowing angle of the warm air as the heating capacity changes, even if the heating capacity changes The reaching distance of the air conditioner does not change much, and the uneven distribution of the indoor temperature becomes small, which enables more comfortable heating.

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 indoor air sucked from the outside of the heater main body 1 into the duct and 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. Reference numeral 13 is a cold air guide attached to the lower part of the duct 11 so as to surround the combustion cylinder 7, and its rear part is made to face the part of the convection blower 11 so as to take in cold air from the convection blower 11 and open the opening 13a. Moreover, the front portion is formed with an opening 13b so as to face the lower portion of the warm air outlet 3.

14 is an outlet frame provided in the lower opening 10 of the duct 9,
Support fittings with both sides attached to both side plates 1a of the heater body 1
It is screwed to 1b (see Fig. 3). This outlet frame 14
Has a concave cross section and has an opening 15 formed in the bottom wall thereof. 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 so that the duct 9 The opening 10 and the hot air outlet 3 are connected.

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. As shown in FIG. 3, the variable vanes 18 are rotatable as shown by an arrow d by allowing a shaft 19 projecting at both ends thereof to penetrate through a support fitting 1b attached to a side plate 1a of the heater body. Reference numeral 20 is a linking cam provided on one of the shafts 19 of the variable blades 18, and has a pin shaft 21. Reference numeral 23 is a link plate for swinging the variable blade 18, an upper part of which is directly rotatably directly connected to the pin shaft 21 of the linking cam 20, and projections 23a and 23b for mounting springs 24a and 24b are provided on the lower part thereof. 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.
And the springs 24a and 24b are attached to the drive shaft 27 of the drive cam 26, and the lower protrusion of the link plate 23 is attached.
It is linked to 23a and 23b.

28 is a control unit for controlling the combustion unit and the drive motor 25,
This is configured as shown in the block diagrams of FIGS. 4 and 5. 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 Signal S ₃ such as strong, medium or weak depending on the difference
The comparison / determination unit 32 outputs the combustion amount of the burner 4 and the convection blower based on the output signal S ₃ from the comparison / determination unit 31.
Combustion control unit for controlling the air flow rate of 11, 33a, 33b ... is a motor
A switch for driving the motor 25. 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 unit 32 also outputs a signal S ₄ for controlling the combustion amount and the blown air amount to the variable blade drive unit 34. Then, the variable blade drive unit 34 outputs the signal S ₅ for controlling the rotation angle of the variable blade 18 based on the signal S _4.
Is output to the motor 25.

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. The Figure 4 switch 33a by the user in the case of, 33b ... drives the motor 25 variable vane drive unit 34 issues a signal S ₅ in response to the switch by pressing one of the variable vane 18 predetermined Rotate to an 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 and 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 via the linking cam 20 and the shaft 19 rotates as indicated by the arrow d. is there.

Therefore, if the room becomes warm and the user does not want to receive hot air, one of the switches 33a, 33b, ... May be operated so that the variable blade 18 becomes substantially vertical. The wind is blown downward so that the warm air does not hit the user's face directly.

Further, in the case of FIG. Ie variable wings 18
The rotation angle varies depending on the signal S ₄ from the combustion control unit 32. When the force is strong, the amount of combustion and the amount of air blown by the convection blower are represented by X in FIG. It changes in tandem. Therefore, when strong combustion and strong air blowing, the variable blade 18 is substantially horizontal as shown in FIG. 2X, but when medium burning and medium air blowing, it becomes like FIG. Therefore, the flow of warm air is downward as compared with the case of strong wind, and the hot air becomes as shown by Y'in FIG. 6, and reaches farther than the conventional one. Similarly, when the combustion is weak and the air is weak, the variable blades 18 incline considerably downward like Z,
The warm 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.

The heating is performed as described above. Here, from the lower part of the hot air outlet 3, the convection blower 11 is guided through the cool air guide 13 as shown by the arrow a in FIGS. 1 and 2. Cold air is blowing out together with warm air. The cold air guide 13 has an opening 13b at the bottom of the hot air outlet 3 for the cold air b.
Therefore, the air is blown below the warm air b along the warm air b or by mixing with the warm air b so that the temperature of the lower part of the warm air b is relatively low. Therefore, even if the variable blades 18 are set in a substantially vertical direction, the temperature of the floor surface does not rise abnormally.

Here, in the above-described embodiment, since the opening 13b of the cold air guide 13 is provided so as to be located in the lower portion of the warm air outlet 3, it is not necessary to provide the cold air outlet separately from the warm air outlet, and the structure is simplified and the appearance is improved. However, in addition to this, a dedicated cool air outlet may be provided below the warm air outlet. Similarly, in this embodiment, the cool air blown from the lower part of the hot air outlet 3 is taken in from the convection blower 11 to simplify the structure, but this may be provided with a dedicated blower or for combustion. You may make it take in the air from the fan which supplies air. Further, the cold air is always blown out from the hot air outlet 3, but this may be done only when the floor surface temperature tends to be high, that is, when the variable vanes 18 are made substantially vertical.

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, the warm air heater of the present invention rotates the variable blades of the hot air outlet to prevent the hot air from directly hitting the face of the user, and is related to the strength of the heating capacity. Without this, the temperature distribution in the room can be made more uniform, and comfortable heating without discomfort can be performed.

Even if the variable blades are set in a substantially vertical direction, cold air is blowing out from the bottom of the hot air outlet, so the floor temperature does not rise abnormally and the floor surface is not discolored, so it is safe and safe to use. it can.

[Brief description of drawings]

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 cross-sectional view of the same part, FIG. 3 is an enlarged perspective view of the same, FIG. 4 and FIG. Block diagram showing a part, 6th
FIG. 7 is an operation explanatory view, 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, 25 ... Drive means (motor), 28 ... Control section.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Sumi Ota 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Shigehiro Maeda 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. Within

Claims (2)

[Claims] 1. A main body having a hot air outlet, a heat generating means provided in the main body, a blower for supplying air to the heat generating means to blow hot air from the hot air outlet, and the warm air outlet. A variable blade that is vertically rotatable, a driving unit that drives the variable blade, and a control unit that operates the driving unit according to the amount of warm air or the amount of heat generated by the heat generating unit or by manual operation. A warm-air heater provided with a cool-air supply means for discharging cool air from the lower part of the warm-air outlet. 2. The cool air supply means is a blower for blowing hot air,
The warm air heater according to claim 1, which is configured by a cold air guide for taking in a part of the wind from the blower.