JPH10132385A - Electrical hot air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To blow hot air downward so as to perform foot heating and concurrently to uniform the distribution of room temperature. SOLUTION: A heating means 14 and a blower 18 are controlled by a controller 19. Hot air 15 is blown out downward through corrugated fixed vanes 22 having a corrugated sectional shape and attached to a blowing-out port 20 where upstream side vanes are positioned higher than downstream side vanes, thereby feet are heated and concurrently the room temperature distribution is made uniform so as to reduce power consumption.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric heater for heating a room.

[0002]

2. Description of the Related Art Conventionally, as this kind of warm air blower, for example, a fan heater as shown in FIG. 6 and described in Japanese Utility Model Application Laid-Open No. 61-74050 have been generally used. As shown in FIG. 6, in the main body 1, a heating unit 4 for heating the room air 2 to the warm air 3, and heat exchange of the room air 2 to the warm air 3 by the heating capability of the heating unit 4. A ventilation path 5 provided, a blower 6 for sending indoor air 2 into the ventilation path 5 and blowing out hot air 3, and a heating means 4 according to an operation state
And a control unit 7 for controlling the blower 6, and an outlet 8 for exchanging the indoor air 2 with the warm air 3 by the heating means 4 and blowing the heat.
And a suction port 9 for sucking indoor air 2 and a fixed wing 10 having a square shape in a side surface provided in the air outlet 8.

In the above configuration, when the heating unit 4 is heated by the control unit 7, the indoor air 2 sent into the ventilation path 5 by the blower 6 is converted into the hot air 3 by the heat generated by the heating unit 4. The heat is exchanged and blown out from the blow-out port 8. At this time, the warm air 3 is blown down from above the ventilation path 5 and is blown out horizontally by a square-shaped fixed wing provided at the outlet 8.

[0004]

However, in the conventional hot air blower, the hot air is blown out in a horizontal direction.
The blown hot air rises upward due to a difference in specific gravity, and the upper part of the room is warmed. However, since the heating effect of the feet is small, there is a problem that a user in the room feels uncomfortable.

Further, since the blown hot air rises upward, the temperature difference between the upper part and the lower part in the room becomes large, and even if the target temperature is reached in the upper part, there is a user in the lower part. At the place, the temperature has not reached the target temperature, and furthermore, there is a problem that the power consumption increases because the heating means is operated to raise the room temperature.

Furthermore, since there is only a ventilation path passing through the heating means, only warm air is blown out from the outlet. for that reason,
When hot air is blown on the floor, there is a problem that the temperature of the floor also rises.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problem. For this purpose, a configuration is adopted in which an outlet has a wavy cross-sectional shape, and a leeward wing is located higher than a leeward wing. In this case, the fixed wind wings are mounted to blow warm air downward.

Further, the blower is installed obliquely upward toward the air outlet and provided with an air passage which does not pass through the heating means, so that the warm air is blown down from above and the indoor air is taken in from below. Configuration.

According to the above-mentioned invention, the heating of the feet can be performed, and at the same time, the temperature distribution in the room can be made uniform.
Therefore, the warm zone which has been leaned toward the upper part in the room moves to the lower part and the temperature distribution in the whole room becomes uniform, so that the power consumption can be reduced.

[0010] Further, the pressure loss of the hot air can be reduced, and the structure inside the outlet can be hardly seen when viewed from the front of the main body.

[0011] Further, although the warm air is blown down from the upper side, the room air is blown out from the lower side, so that a rise in the temperature of the floor surface can be prevented.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a main body having an air outlet, a heating means provided in the main body, a ventilation path provided with the heating means in a path to the air outlet, and a suction port in the air passage. A blower that takes in room air from a mouth and takes in room air from the suction port and discharges the air from the outlet as it is; a cross-sectional shape attached to the outlet and having a corrugated cross section; and a windward wing is higher than a leeward wing. And a controller for controlling the heating means and the blower.

Since the windward wing portion is located above the leeward wing portion, the warm air blown from the windward side is blown downward, thereby enabling foot heating and the indoor temperature distribution in the height direction. Can be made uniform. Further, since the cross-sectional shape of the fixed wing is corrugated, when the main body is viewed from the front, the structure inside the air outlet can be made difficult to see.

Further, the wind blown out from the outlet is configured such that the upper side is warm air and the lower side is room air flow.

[0015] Since the room air is blown from the lower side, even if warm air is blown down from the upper side by the corrugated fixed blade having a corrugated cross section, the room air is blown from the lower side. Since the air is blown out, it is possible to prevent a rise in the temperature of the floor surface when the hot air is blown out.

Further, a temperature detecting section is provided in the main body, and the heating means and the blower are controlled based on information of the temperature detecting section.

According to the present invention, the temperature-imparted wings whose cross-sectional shape is corrugated move the warm region which has been biased toward the upper part of the room to the lower part, so that the temperature distribution throughout the room can be made uniform. Since the detection unit reaches the target temperature in a short time, power consumption can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a side sectional view of an electric hot air blower according to Embodiment 1 of the present invention.

In FIG. 1, 11 is a main body, 12 is a heat storage material, 13 is room air, 14 is an electric heating means for heating the heat storage material 12 to store heat, and 16 is a back surface, a top surface, and a front surface of the heat storage material 12 in this order. A connected ventilation path, 17 is a heat insulating material that surrounds the outer periphery of the ventilation path 16 and blocks heat leakage to the outside, 18 is a blower that sends indoor air 13 into the ventilation path 16, 15 is warmed by the heat storage material 12 and the heating means 14. It was warm air. Reference numeral 19 denotes a control unit for controlling the heating means 14 and the blower 18 in accordance with the operation state, reference numeral 20 denotes an outlet for blowing out the hot air 15, reference numeral 21 denotes a suction port for sucking the room air 13, and reference numeral 22 denotes a waveform provided at the outlet. This is a corrugated fixed wing having a cross-sectional shape and arranged such that the leeward wing is located above the leeward wing.

Next, the operation will be described. When the heating means 14 is energized, the heat storage material 12 in the ventilation path 16 is heated and stored by the heat from the heating means 14. When the blower 18 is operated from this state, the indoor air 13 passes through the ventilation path 16, is converted into hot air 15 when passing through the heat storage material 12 and the heating means 14, and is blown out as hot air 15 from the outlet 20. Is done. At this time, the warm air 15 is discharged downward by the corrugated fixed wings provided in the outlet 20 and having a corrugated cross-sectional shape, so that the feet can be heated.

FIG. 1 also shows an air path structure. When the blower 18 is operated by inclining the blower 18 upward, the wind of the room air 13 introduced from the suction port from below and the heat storage from above. The hot air 15 warmed by the material 12 and the heating means 14 joins and blows out at the outlet 20. At this time, warm air is blown down from the upper side by the corrugated fixed blades 22 having a corrugated cross-sectional shape, but the wind of the room air 13 is also blown out from the lower side. Therefore, it is possible to prevent a rise in the temperature of the floor surface when the hot air 15 is blown out.

FIG. 2 shows a comparison between the state of blowing hot air from a conventional hot air blower and the state of blowing hot air from a waveform fixed blade having a corrugated cross section. FIG. 2 (a) shows a waveform having a corrugated cross section. FIG. 3 is a diagram showing a state in which a fixed wing 22 blows out hot air;
(B) is a state diagram of hot air blowing from a conventional square-shaped fixed blade 10. As can be seen by comparing FIGS. 2A and 2B, in FIG. 2A, the warm air 15 can be blown downward, so that the feet can be heated. On the other hand, in (b),
After the hot air 3 is blown out in the horizontal direction, it rises upward, so that the heating of the feet is not good.

FIG. 3 compares the appearance of the internal structure of the air outlet when the corrugated fixed blade and the conventional square-shaped fixed blade are viewed from the front of the main body. FIG. 3A shows the appearance of the internal structure when viewed from the outlet 20 of the corrugated fixed blade 22 having a corrugated cross-sectional shape. FIG. 3B shows how the internal structure looks when viewed from the outlet 8 of the conventional square-shaped fixed wing 10. In (a), when viewed from the front, when viewed from the front, a horizontal arrow is blocked by the corrugated fixed wings and cannot penetrate into the interior. On the other hand, in the horizontal arrow view of (b), since there is a gap on the left side of the fixed wing cross section, it can penetrate to the inside. Therefore, when the corrugated fixed wings 22 having a corrugated cross-sectional shape are arranged at the same interval as the conventional fixed wings, the internal structure can be made invisible.

FIG. 4 is a diagram comparing the concept of the air path and the pressure loss when hot air is blown out from each fixed wing. FIG. 4 (a)
It is a conceptual diagram of the airway and pressure loss at the time of passage of the wing | blade of the waveform fixed wing | blade which comprised the cross-sectional shape of this invention in the structure where a windward wing part is located higher than a leeward wing part. FIG. 4 (b) is a conceptual diagram of the air path and pressure loss of a straight inclined fixed wing in which the fixed wing is straight and inclined downward with hot air. FIG. 4 (c) is a conceptual diagram of the air path and pressure loss of the fixed-shaped fixed wing to blow out the warm air downward. FIG. 4D is a conceptual diagram of a wind path and pressure loss when a U-shaped fixed wing that blows out hot air in a horizontal direction passes through the wing. In (a), since the wing shape is a waveform curve and is inclined downward, even if the warm air 15 and the horizontal air blow from above hit the wing surface, they are blown out to the outlet side, so that the pressure loss is reduced. A small amount of hot air 15 can be blown out to a distant place. In the straight inclined fixed wing 23 of (b), the warm air 3 blown out from above is blown downward without receiving a pressure loss, but is inclined against the blown air blown from the horizontal direction. When the hot air 3 collides with the hot air 3, it turns right below, resulting in a pressure loss, and the hot air 3 cannot be blown far. In addition, since the front end of the cross-shaped fixed wing 24 is caught in the lower side, the hot air 3 is drawn into the fixed wing 24 to cause a pressure loss. Therefore, hot air can be blown downward, but cannot be blown far. In (d), when the hot air 3 is blown down from above, the hot air 3 is easily taken in. However, since the horizontal portion at the blade tip is long, the hot air 3 collides with the fixed blade, and a pressure loss occurs. Further, in the horizontal air blowing, the air blows against the inclined portion on the left side of the blade and receives a pressure loss.

(Embodiment 2) FIG. 5 is a side sectional view of an electric hot air blower according to Embodiment 2 of the present invention. Reference numeral 25 denotes a temperature detection unit provided near the intake port 21 for detecting the temperature in the room.

Next, the operation will be described. The temperature detecting section 25 detects the temperature in the room, and based on the detected information,
The control unit 19 controls the operation of the blower 18. Since the temperature inside the room can be made uniform by the waveform fixed wings 22 having a corrugated cross-sectional shape, the temperature detection unit 25 in the lower part of the room can reach the set target temperature faster than before, so that heating is performed. The power supply time of the means 14 can be reduced, and power consumption can be reduced.

[0027]

As described above, according to the present invention, warm air is blown downward, thereby heating the feet and making the temperature distribution in the room uniform.

Further, since the temperature in the room can be made uniform, the temperature of the temperature detecting section can reach the target temperature earlier than before, and the power supply time of the heating means can be reduced to reduce power consumption.

[0029] In addition, a corrugated fixed wing having a configuration in which the cross section is corrugated and the leeward wing is positioned higher than the leeward wing is different from that in which the fixed wing is simply directed downward. Since the airfoil shape is formed by a curved line and is directed downward, all of the warm air from the windward side and the air blown from the horizontal direction are directed to the outlet side, and the pressure loss can be reduced.

Further, the structure inside the air outlet can be made invisible when the main body is viewed from the front by the corrugated fixed wings.

Further, since the room air is blown from the lower side, even if warm air is blown down from above to the floor by the corrugated fixed blades having a corrugated cross section, the room air is blown from the lower side. Since the indoor air wind is blown out, it is possible to prevent a rise in the temperature of the floor surface when the hot air is blown out.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an electric hot air blower according to a first embodiment of the present invention.

FIG. 2 (a) is a diagram showing a state of blowing hot air when a waveform fixed blade is provided in the electric hot air blower according to the first embodiment of the present invention; and (b) a hot air blowout having fixed blades of a conventional electric hot air blower. State diagram

FIG. 3 (a) is a diagram showing the appearance of the inside of a waveform fixed blade of the electric hot air blower according to the first embodiment of the present invention when viewed from the front of the main body. Diagram showing the appearance of the interior

FIG. 4 (a) is a conceptual view of a waveform fixed blade and a wind path and pressure loss when hot air is blown out in the electric hot air blower according to the first embodiment of the present invention. (B) A conventional straight inclined fixed blade when hot air is blown out. Conceptual diagram of wind path and pressure loss of (c) Conceptual diagram of wind path and pressure loss when hot air is blown out of conventional square-shaped fixed wing (d) Hot air of conventional square-shaped fixed wing Conceptual diagram of air path and pressure loss during blowing

FIG. 5 is a side sectional view of an electric hot air blower according to a second embodiment of the present invention.

FIG. 6 is a side sectional view of a conventional hot air blower.

[Explanation of symbols]

 REFERENCE SIGNS LIST 12 heat storage material 14 heating means 16 ventilation path 17 heat insulating material 18 blower 19 control unit 20 air outlet 21 suction port 22 waveform fixed blade 25 temperature detection unit

 ──────────────────────────────────────────────────続 き Continued from the front page (72) Inventor Hiroaki Fujii 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A main body having an air outlet, a heating means provided in the main body, a ventilation path provided with the heating means in a path and leading to the air outlet, and a suction port for taking indoor air into the ventilation path. A blower that takes in room air from the suction port and discharges the air from the outlet, and a configuration in which a cross-section attached to the outlet has a waveform shape, and a windward wing is positioned higher than a leeward wing. An electric hot air blower comprising: a fixed waveform wing; and a control unit for controlling the heating means and the blower. 2. The electric hot-air blower according to claim 1, wherein the air blown out from the outlet is configured such that warm air is formed on an upper side and indoor air is blown on a lower side. 3. The electric hot air blower according to claim 1, further comprising a temperature detecting section in the main body, wherein the heating means and the blower are controlled based on information of the temperature detecting section.