JPH05172404A - Hot air heater - Google Patents

Abstract

PURPOSE:To force a hot air heater to send hot air as far as every corner of a room in order to equalize a room temperature and produce no sense of cool air even during low heating operation. CONSTITUTION:This is a hot air heater which turns the hot air generated at a heat generation section 20 into hot air by the air fed from a fan 40 and blows off the hot air from a hot air outlet 50 out of the heater. The heater divides a ventilation passage from the fan 40 into a first ventilation passage 71 which blows off the air from the upper part of the hot air outlet 50 and a second ventilation passage 72 which blows off the air from other parts which exclude the upper part of the hot air outlet 50. The hot air generated at the hot air generation section 20 is forced to join and flow in the second ventilation passage 72. At the same time, passage on/off means 91 and 92 are installed between the second ventilation passage 72 and the first ventilation passage 71 so as to open communication between the ventilation passages during low heating operation.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a hot air heater.

[0002]

2. Description of the Related Art Conventionally, in a so-called double warm air type heater such as the warm air heater disclosed in Japanese Patent Laid-Open No. 2-8655, hot air having a lower temperature is blown out from the upper portion of the warm air blowout port. , The warm air with a high temperature in the lower layer is prevented from immediately rising, and the warm air is made to reach a long distance to make the room temperature uniform.

[0003]

However, in the above-mentioned conventional double warm air type heater, in the case of the weak heating operation in which the heat generation amount is small, the temperature of the warm air blown from the upper part of the warm air outlet is There is a drawback that it becomes too low and gives the user a feeling of cold wind.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art, allows warm air to reach a long distance to make the room temperature uniform, and does not cause a feeling of cold air even during a weak heating operation. The purpose is to provide hot air heaters.

[0005]

In order to achieve the above object, the hot air heater according to the present invention uses hot air generated in the heat generating portion as hot air by the air blower and blows the hot air out of the hot air outlet. A hot air heater blown out to the blower, wherein the air blown from the blower blows air from above the hot air outlet
And a second ventilation path that blows air from a portion other than the upper part of the warm air outlet, and the hot air generated in the heat generating section is joined to the second ventilation path, and the second ventilation path is provided. The first feature is that a passage opening / closing means is provided between the passage and the first ventilation passage to open between the ventilation passages during weak heating. In addition to the first characteristic, the warm air heater of the present invention has a second characteristic that the passage opening / closing means automatically opens due to a temperature decrease in the second ventilation passage.

[0006]

According to the first feature, since the passage opening / closing means is opened during the weak heating, the warm air kept at a relatively high temperature in the second ventilation passage also flows into the first ventilation passage, The temperature of the cold air in the first ventilation passage is raised appropriately. Therefore, the wind that gives a feeling of cool air during the weak heating will not be blown out from the hot air outlet. Further, according to the second feature, in addition to the action of the first feature, the passage opening / closing means is automatically opened due to the temperature decrease in the second ventilation passage, so that the temperature decrease due to the weak heating operation is automatically performed. Between the first ventilation passage and the second ventilation passage is opened, and warm air of relatively high temperature flows into the first ventilation passage,
As a result, the blowing of cold air from the hot air outlet is prevented.

[0007]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a sectional view showing the whole structure of a warm air heater, FIG. 2 is a perspective view of a main portion, and FIG. It is a section lineblock diagram explaining.

A combustion chamber 20 and a burner 30 are arranged in the main body case 10, and a fan 40 for blowing air is provided as a blower on the back side of the main body case 10. The high-temperature air generated in the combustion chamber 20 becomes warm air due to the wind from the fan 40, and is blown out of the device from the warm air outlet 50. The warm air outlet 50 is provided with a plurality of louvers 60.

An air passage extending from the fan 40 to the warm air outlet 50 is composed of a first air passage 71 and a second air passage 72,
The ventilation case 80 is divided by a partition wall 81. The second ventilation passage 72 communicates with the combustion chamber 20 so that the hot air generated in the combustion chamber joins. The wind from the fan 40 passes through the first ventilation passage 71 and is blown out from the upper part of the warm air outlet 50, and the second ventilation passage is also provided.
It passes through 72 and is blown out from other than the upper part of the warm air outlet 50.

A ventilation opening 81a is provided in a part of a partition wall 81 for partitioning the first ventilation passage 71 and the second ventilation passage 72, and as a passage opening / closing means for opening and closing the passages 71, 72 therein. An opening / closing lid 91 and a shape memory alloy piece 92 for moving it are provided. The shape memory alloy piece 92 is arranged in the second ventilation passage 72, and when the temperature in the second ventilation passage 72 rises to a high temperature, the opening / closing lid 91 is closed and the shape of the second ventilation passage 72 is increased. The opening / closing lid 91 is opened when the temperature drops.

Now, when the heating is strongly operated, the burner is
Since 30 is strongly burned, a large amount of high-temperature hot air enters the second ventilation passage 72 from the combustion chamber 20, and the temperature in the second ventilation passage 72 rises. Then, the shape memory alloy piece 92 automatically works,
The open / close lid 91 is closed as shown in FIG. by this,
There is no ventilation between the first ventilation passage 71 and the second ventilation passage 72, and the air without heat from the fan 40 is blown from the upper portion of the warm air outlet 50 from the first ventilation passage 71. .. As a result, the warm air blown out through the second ventilation passage 72 is appropriately suppressed from above and penetrates deep into the room. Therefore, the indoor temperature can be made uniform. Of course, the first ventilation passage 71
The wind from is also appropriately heated by conduction heat or the like from the side of the second ventilation passage 72. When the heating is weakly operated, since the burner 30 is slightly burned, so much hot air from the combustion chamber 20 does not enter the second ventilation passage 72, and thus the inside of the second ventilation passage 72 is not heated. The temperature drops (not too hot). Then, the shape memory alloy piece 92 automatically operates to open the opening / closing lid 91 as shown in FIG. As a result, air is ventilated between the first ventilation passage 71 and the second ventilation passage 72, and
The relatively high temperature air flows into the first air passage 71 from the air passage 72 and is mixed with the first air passage 71 to slightly raise the temperature of the air. Therefore, it is prevented that the temperature of the air blown from the upper part of the warm air outlet 50 through the first air passage 71 during the weak combustion is too low to give the user a feeling of cold air. When there is no inflow from the second ventilation passage 72, the amount of heat generated in the combustion chamber 20 is small in the case of weak combustion, so that the wind passing through the first ventilation passage 71 is almost heated. It is blown out without giving a cold sensation to the user.

4 and 5 show a second embodiment of the present invention, FIG. 4 is a sectional view of a warm air heater showing a state during strong heating, and FIG. 5 is a temperature showing a state during weak heating. It is a cross-sectional block diagram of a wind heater.

In the present embodiment, instead of the shape memory alloy piece 92 in the first embodiment, a bimetal piece 93 is provided with an opening / closing lid 91.
Is attached to. The bimetal piece 93 arranged in the second ventilation passage 72 closes the opening / closing lid 91 as shown in FIG. 4 when the temperature in the second ventilation passage 72 rises due to the strong heating operation. When the temperature in the second ventilation passage 72 drops due to weak operation, the opening / closing lid 91 is opened as shown in FIG. Other configurations,
Since the operation is similar to that of the first embodiment, the description will be omitted.

6 to 10 show a third embodiment of the present invention, FIG. 6 is a sectional view of the entire warm air heater, FIG. 7 is a perspective view of a main portion, and FIG. 8 is a state of use. Cross-sectional configuration diagram, FIG.
FIG. 10 is a horizontal cross-sectional configuration diagram illustrating a usage state.

In this embodiment, as the passage opening / closing means, a stepping motor 94, a crank arm 95, a pair of rotary shafts 96, a pair of rotary doors 97 attached to the rotary shafts 96, and an open / close lid for each rotary door 97. 97a is provided integrally. The opening / closing lid 97a is substantially perpendicular to the pivot door 97. When the strong heating operation is performed, the stepping motor 94 is driven via a controller (not shown), the opening / closing lid 97a and the swing door 97 are rotated to the positions shown in FIGS. 6, 7, and 9, and the opening / closing lid is opened. 97a is the first ventilation passage 71 and the second ventilation passage
The ventilation opening 81a provided in the partition wall 81 of 72 is closed. Therefore, the air without the hot air from the fan 40 is blown from the upper part of the warm air outlet 50 from the first ventilation passage 71. As a result, the warm air blown out through the second ventilation passage 72 is appropriately suppressed from above and penetrates deep inside the room. Therefore, the indoor temperature can be made uniform. Of course, the first ventilation passage 71
The wind from is also appropriately heated by conduction heat or the like from the side of the second ventilation passage 72.

On the other hand, when the weak heating operation is performed, the opening / closing lid 97a and the swing door 97 are rotated to the positions shown in FIGS. 8 and 10, and the opening / closing lid 97a opens the ventilation opening 81a. As a result, relatively high-temperature air from the second ventilation passage 72 is generated by the first ventilation passage 71.
Pour into, mix and raise the temperature of the air a little. Therefore, during the weak combustion, the hot air outlet 50 passes through the first ventilation passage 71.
It is prevented that the temperature of the air blown from the upper part of the above is too low to give the user a feeling of cold air. Further, the rotating door 97 has a shape that closes the left and right sides of the hot air outlet 50, thereby reducing the hot air blowing area, and the hot air is blown out only from around the center. Non-uniformity is reduced.

[0017]

According to the warm air heater according to the first aspect of the present invention, the ventilation passage from the blower blows out air from the upper portion of the warm air outlet. And a second ventilation path that blows air from a portion other than the upper part of the warm air outlet, and the hot air generated in the heat generating section is joined to the second ventilation path, and the second ventilation path is provided. Since the passage opening / closing means for opening the both ventilation passages during the weak heating is provided between the passage and the first ventilation passage, during the weak heating,
The temperature of the cool air in the first ventilation passage can be appropriately increased by causing the warm air kept in the second ventilation passage at a relatively high temperature to flow into the first ventilation passage. Therefore, it is possible to prevent the wind that gives a feeling of cool air from being blown out from the warm air outlet during the weak heating. Of course, except in the weak heating operation, warm air can be made to reach far and the room temperature can be made uniform. According to the warm air heater of claim 2, in addition to the effect of the configuration of claim 1, the passage opening / closing means is configured to automatically open due to a temperature decrease in the second ventilation passage. Therefore, if there is a temperature drop due to the weak heating operation, relatively high temperature warm air can automatically flow into the first ventilation passage from between the second ventilation passages without waiting for a command from the controller or the like. Therefore, it is possible to prevent the blowing of cool air from the hot air outlet.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram of an entire warm air heater according to a first embodiment.

FIG. 2 is a perspective view of a main part of the warm air heater according to the first embodiment.

FIG. 3 is a cross-sectional configuration diagram illustrating a usage state of the warm air heater according to the first embodiment.

FIG. 4 is a cross-sectional configuration diagram showing a state during strong heating of the warm air heater according to the second embodiment.

FIG. 5 is a cross-sectional configuration diagram showing a state during weak heating of the warm air heater according to the second embodiment.

FIG. 6 is a cross-sectional configuration diagram of an entire warm air heater according to a third embodiment.

FIG. 7 is a perspective view of a main part of a warm air heater according to a third embodiment.

FIG. 8 is a cross-sectional configuration diagram illustrating a usage state of the warm air heater according to the third embodiment.

FIG. 9 is a horizontal cross-sectional configuration diagram illustrating a usage state of the warm air heater according to the third embodiment.

FIG. 10 is a horizontal cross-sectional configuration diagram illustrating a usage state of the warm air heater according to the third embodiment.

[Explanation of symbols]

 10 Main body case 20 Combustion chamber 30 Burner 40 Fan 50 Warm air outlet 60 Louver 71 First ventilation passage 72 Second ventilation passage 81 Partition wall 81a Vent opening 91, 97a Open / close lid 92 Shape memory alloy piece 93 Bimetal piece

Front page continuation (72) Inventor Tsuguhisa Mizuta 32 Akashi-cho, Chuo-ku, Kobe-shi, Hyogo In stock company Noritsu

Claims (2)

[Claims] 1. A hot air heater that heats hot air generated in a heat generating section by a wind from a blower and blows the hot air out of the blower through a hot air blowout port. A first ventilation passage that blows wind from the upper part of the wind outlet,
It is divided into a second ventilation passage that blows air from a portion other than the upper portion of the warm air outlet, and the hot air generated in the heat generating unit is merged into the second ventilation passage, and the second ventilation passage and the first ventilation passage are combined. A warm air heater characterized in that a passage opening / closing means is provided between the ventilation passage and the ventilation passage to open between the ventilation passages during weak heating. 2. The warm air heater according to claim 1, wherein the passage opening / closing means automatically opens due to a temperature decrease in the second ventilation passage.