JPH02203154A - Heater by warm-air - Google Patents

Abstract

PURPOSE:To enable execution of effective warm-air heating and also to cool a louver, which tends to be of high temperature relatively, to be kept at a low temperature, by making warm air be blown off from a warm-air outlet port of the main body of a heater and a outlet port of the louver so that the warm air be blown off from the whole area in the lateral width of the main body of the heater. CONSTITUTION:A part of air from a blower 11 for convection is guided by a cool-air guide 10 and enters a guiding passage 10a as cool air, and a part of the cool air is collected by a guide plate 28 and led into a louver 18 through a flexible pipe 29 and blows off from a blowoff port of the louver. Accordingly, the heat of a part facing a warm-air blowoff port 3 of the louver 18 is taken away effectively by the cool air passing the inside, and therefore a surface temperature thereof can always be kept to be low. In addition, warm air produced by a heat absorbed in the louver blows off from a outlet port of the louver in a part not facing the warm-air outlet port 3. Accordingly, the warm air turns to blow off substantially from the whole area in the lateral width of the main body 1 of a heater. An angle of rotation of the louver 18 varies according to a signal from a burning control element, varying in linkage to the amount of burning and the quantity of air blown off by the blower for convection in such a manner that it is X at the time of strong, Y at the time of medium and Z at the time of weak.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot air heater that heats a room using warm air.

A burner 102, which is a conventional technology, is provided, and combustion gas from the burner 102 is mixed with air from a blower 103 installed on the back of the main body, and hot air is blown out from a hot air outlet 104 through a louver 105, and the mixture is heated indoors. It is supposed to heat the room.

Problems to be Solved by the Invention However, the warm air outlet 104 is limited to the louver 1 due to the space 106 for the cartridge tank and the control section.
It was smaller than the width of 05, and could not blow hot air widely in the lateral direction, resulting in poor heating effect. Further, the louver 105 has safety problems such as the painted portion of the louver deteriorating in a short period of time and burns if touched by the user because the louver 105 becomes hot when exposed to hot air.

In addition, the louver 10 provided at the hot air outlet 104
5 is fixed to the main body, so the direction of hot air blowing cannot be changed, and 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 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 has solved these problems, and the first purpose is to improve the heating effect and safety, and the second purpose is to provide comfortable heating with less uneven temperature distribution. It is in.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a hollow louver located over almost the entire width of the heater main body, and sends cold air from the end of the louver on the hot air outlet side, while also sending cold air from the end of the louver on the hot air outlet side. An air outlet is provided at the front edge of the louver to blow out the cold air as warm air, and the second warm air heater rotates the louver in the vertical direction to change its angle of inclination. It is designed so that it can be used.

Function: With the above configuration, the present invention allows cold air to pass through the louver to keep the temperature of the louver, which tends to become high, low.
Warm air is blown out even from parts that do not face the hot air outlet, and can be blown out over almost the entire width of the heater. Furthermore, by changing the inclination angle of the louver, the distance that the hot air reaches can be changed, thereby making it possible to maintain a substantially uniform temperature in the room.

Embodiments Below, the embodiments of the present invention will be explained with reference to the drawings. 1 is a heating machine main body, 2 is a front plate attached to the front of this heating machine main body l, It has a hot air outlet 3 at one location. 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 the partition plate 6
It is attached to. 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 within the heater main body 1 so as to cover the outer periphery of the combustion tube 7, and has an opening 9a formed at the lower front surface.

Reference numeral 10 denotes a cold air guide provided in the duct 9, which forms a guide passage 10a for guiding cold air from a convection blower, which will be described later, between it and the upper wall of the duct, and its front lower part projects above the hot air outlet 3. This forms a cold air outlet 10b. Reference numeral 11 denotes a convection blower installed facing the rear of the duct, which is covered by a fan guard 12, and which supplies indoor air sucked in from outside the heater body 1 into the duct, and which blows air from the combustion tube 7 inside the duct. The warm air is mixed with combustion gas and blown out from the hot air outlet 3. Reference numeral 14 denotes an air outlet frame provided at the lower opening 9a 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 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 9a of the duct 9, and the frame edge 14a is brought into contact with the inner surface of the front plate 2. The opening 9a of the duct 9 and the hot air outlet 3 are connected to each other. A substantially horizontal guide piece 16 is attached to the lower edge of the outlet frame opening 15. Reference numeral 18 denotes a hollow louver provided above the hot air outlet 3 in the entire lateral direction of the outlet frame 14, that is, in the entire lateral direction of the heater body 1, covering about half of the hot air outlet 3 on the road. It is formed as wide as possible, and the inner side thereof has an arcuate surface 18a. As shown in FIG. 3, this louver 18 has shafts 19 protruding from both ends of the louver 18 attached to a supporting metal fitting 13 (on the side of the heater body).
The louver 18 is made to be freely rotatable as shown by arrow d. 20 is a linking cam provided on one side of the shaft 19 of the louver 18, and the bottle shaft 21 is provided. Reference numeral 23 denotes a link plate for swinging the louver 18, the upper part of which is rotatably directly connected to the pin shaft 21 of the linking cam 20, and the lower part provided with protrusions 23a and 23b to which springs 24a and 524b are attached.

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 an L-shaped guide plate attached to the lower side of the ceiling surface of the duct 9, which takes in a portion of the cold air passing through the guide passage 10a. Reference numeral 29 denotes a guide passage for sending the air taken in by the guide plate 28 to the louver 18, and in this embodiment, a flexible pipe is used.

Reference numeral 30 denotes a cold air intake hole provided on the side surface of the louver 18 facing the hot air outlet 3, to which the flexible pipe 29 is connected.

Reference numeral 31 denotes a louver outlet that is elongated and opened at the front end edge of the portion of the louver 18 that does not face the hot air outlet 3 . A control section 32 controls the combustion section and the drive motor 25, and is constructed as shown in the block diagrams of FIGS. 6 and 7. That is, 33 is a temperature detecting section consisting of a thermistor or the like, 34 is a room temperature setting section for setting the indoor temperature, and 35 is a signal S1 from the temperature detecting section 33 and a signal S from the room temperature setting section 34.
2 and outputs a signal S3 such as strong, medium, or weak according to the difference, and 36 determines the combustion amount of the burner 4 based on the output signal S3 from the comparison and determination section 35. and a combustion control unit that controls the amount of air blown by the convection blower 11,
37a, 37b, . . . are switches for driving the motor 25, and the louver drive unit 38 rotates the motor 25 by a predetermined angle in response to signals from the row switches 37a, 37b. On the other hand, in FIG. 7, the combustion control section 36 also outputs a signal S4 for controlling the combustion amount and the air blowing amount to the louver drive section 38. Then, the louver driving section 38 receives the above-mentioned signal S4.
A signal S5 for controlling the rotation angle of the louver 18 is output to the motor 25 based on the rotation angle of the louver 18.

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

First, before the start of operation, the louver 18 is positioned in a substantially vertical direction as shown in FIG. The combustion control section 36 is actuated by the output S3 from the comparison/judgment section 35 generated during operation from state 20, and generates a control signal S4 to start combustion according to a predetermined sequence and rotate the convection blower 11. As a result, the wind from the convection blower 11 and the combustion gas flowing out from the combustion tube 7 mix in the duct 9 to form warm air, which is blown out from the hot air outlet 3.

On the other hand, a part of the air from the convection blower 11 is guided by the cold air guide IO and enters the guide passage 10a as cold air,
A portion of the cold air is collected by the guide plate 28, guided into the louver 18 through the flexible pipe 29, and blown out from the louver outlet 31. Therefore, heat is effectively removed from the portion of the louver 18 facing the hot air outlet 3 by the cold air passing therethrough, so that its surface temperature can always be maintained low.

Moreover, the louver outlet 3 in the part that does not face the hot air outlet 3
From 1, warm air is blown out due to the heat absorbed within the louver.

Therefore, the warm air is blown out from almost the entire width of the heater body 1.

On the other hand, since the louver 18 rotates by the operation described below, the hot air blown out from each of the air outlet ports 3.31 is blown out from the heater body 1 at an optimal angle. In other words, in the case of FIG. 6, the user operates the switches 37a and 37b.
..., the louver drive section 38 emits a signal S5 in accordance with the switch, drives the motor 25, and rotates the louver 18 at a predetermined angle. As shown in FIG. 3, the driving cam 2 is first rotated by the rotation of the motor 25.
6's drive shaft 27 rotates as shown by the arrow a, and the spring 2
The link plates 23, which are linked via 4a and 24b, descend as indicated by the arrows. As a result, the linking cam 20 connected to the link plate 23 by the bottle shaft 21 rotates as shown by the arrow C, and the integrated louver 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,
Operate one of the switches 37a, 38b, etc. to make the louver 18 almost vertical (this allows the warm air to be blown downward, hitting the user's face, etc.). Avoid direct exposure to hot air.

Further, in the case of FIG. 7, the situation is as follows. In other words, the rotation angle of the louver 18 changes depending on the signal S4 from the combustion control section 36, and when it is strong, the signal S4 changes as shown in X5 in FIG. Changes in conjunction with the air volume. Therefore, during strong combustion and bullet blowing, the louver 18 is approximately horizontal as shown in FIG. Therefore, the hot air becomes as shown in Fig. 8 Y°, and reaches farther than the conventional system. Similarly, when there is weak combustion and weak air blowing, the louver 18 becomes inclined considerably downward as shown by Z, and the hot air flows along the floor surface as shown 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 twist firing, and the temperature distribution in the strong, medium, and weak areas is almost uniform.

Heating is performed as described above, and the flow of warm air will be explained in more detail with reference to FIGS. 1, 2, and 8. 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 become warm air.
In the upper part of the duct, the amount of combustion gas is large and the temperature is high, and in the lower part of the duct, the hot air from the convection air blower 'a11 that circulates around the outer periphery of the combustion tube 7 and exchanges heat with the combustion tube 7 has a relatively low temperature.

The high-temperature warm air in the upper part of the duct is blown downward from the upper part of the duct toward the hot air outlet 3 as indicated by the thick arrow in FIG. As the louver 18 becomes vertical like Y and Z and the amount of warm air decreases, the louver 1
8, and the air is blown out more downwardly. 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 hot air reaches is greatly increased, and the comfortable space is greatly expanded. In particular, in this embodiment, the exit portion of the cold air passage IQa formed by the cold air guide IO has a tapered shape that becomes narrower as it approaches the cold air outlet tOb. Suppression of rise is effectively exerted.

Note that in the above embodiment, the louver was explained as a single piece, but
This can be multiple pieces or a conventional fixed louver.
Other configurations may also be used as long as they achieve the intended purpose.

In particular, the intake of air into the louver is not a convection blower,
It may be a combustion blower or a dedicated blower.

Effects of the Invention As described above, the hot air heater of the present invention blows out warm air from the warm air outlet of the heater body and the outlet of the louver, so the warm air is blown out from the entire width of the heater body. In addition to making effective hot air heating possible, the louver, which tends to reach relatively high temperatures, can be cooled and maintained at a low temperature.
It will be highly safe.

In addition to the above, with the second hot air heater, the louver of the hot air outlet is rotated to prevent hot air from hitting the user's chest directly, and regardless of the strength of the heating capacity, it is possible to The temperature distribution can be made more uniform, and comfortable heating without discomfort can be achieved.

[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 same main part, and Fig. 3 is the expanded wood vrR.
Figure L and Figure 4 are enlarged perspective views of the vicinity of the duct, Figure 5 is an enlarged perspective view of the louver, Figures 6 and 7 are block diagrams showing the control section of the hot air heater, and Figure 8 is the operation. An explanatory drawing, FIG. 9 is an external perspective view, and FIGS. 10 and 11 are sectional views showing a conventional hot air heater. 1...Main body, 3...Warm air outlet, 4.
... Heat generation means (burner), 9 ... Duct, 11 ... Convection blower, 18 ...
Louver, 25... Drive means (motor), 30.
...Cold air intake hole, 31...Louver outlet, 32...Control unit. Name of agent Patent attorney Shigetaka Awano and one other person Generating hand δ (barnaft tact convection use progression and stable louver consolidation wj J club meeting)

Claims (2)

[Claims] (1) A hot air outlet provided on one side of the main body, a heat generating means provided in the main body, a duct surrounding the heat generating means, and a hot air blower that supplies air into the duct to blow out the hot air. A convection blower that blows out hot air from an outlet, a hollow louver provided so as to be located across almost the entire width of the main body facing the hot air outlet, and a cold air intake provided at the end of the louver on the side of the hot air outlet. A hot air heater comprising a hole and a louver outlet provided on the front edge of the louver that does not face the hot air outlet on the opposite side of the cold air intake hole, and blows cold air into the louver from the cold air intake hole. . (2) A hot air outlet provided on one side of the main body, a heat generating means provided in the main body, a duct surrounding the heat generating means, and a hot air blower for supplying air into the duct. a convection blower for blowing out hot air from an outlet; and a convection blower that is arranged so as to be vertically rotatable so as to be located across almost the entire width of the main body opposite to the hot air outlet, and that corresponds to the amount of heat or the amount of hot air generated by the heat generating means. A hollow louver that is driven by hand or manual operation, a cold air intake hole provided at the end of the louver on the hot air outlet side, and a front edge of the louver that does not face the hot air outlet on the opposite side of the cold air intake hole. The hot air heater is equipped with a louver outlet and sends cold air into the louver from the cold air intake hole.