JP2001343162A - Open combustion type warm air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an open combustion type warm air heater in which a body is made compact, and which is free from restriction of an installation place where in use. SOLUTION: A convection fan is constructed of a sirocco fan 11 and is disposed at the upper portion of a combustor 6 in the body 1, and a cartridge tank 8 in which a liquid fuel is contained is disposed at the rear of the body 1 located behind the combustor 6. Further, the suction hole 14 of the sirocco fan 11 is disposed, extended laterally toward the rear of the body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an open combustion type hot air heater such as an oil fan heater.

[0002]

2. Description of the Related Art An open-combustion type hot air heater of this type is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 7-146010.
Generally, a cartridge tank is provided on the side of the combustor, and a convection fan is provided on the rear surface of the main body. In addition, Japanese Patent Application Laid-Open No. 1-247956 or Japanese Patent Application Laid-Open
As disclosed in Japanese Patent Publication No. 176358, although it has not been sold in the market, a cartridge tank is disposed behind the combustor, and a convection fan is disposed between the cartridge tank and the combustor, or the combustion chamber is provided with a convection fan. It has been proposed as an idea that a convection fan is provided at an upper portion of the container and a cartridge tank is provided at a rear surface of the main body.

FIG. 5 is a cross-sectional view of a conventional general open combustion type hot air heater disclosed in Japanese Patent Application Laid-Open No. 7-146010.
FIG. 6 is a sectional view taken along the line II. As shown in FIGS. 5 and 6, as a general configuration of the related art, an indoor air intake 2 is provided on a rear surface side of a main body 1, and a propeller as a convection fan is opposed to the indoor air intake 2. A fan 3 is provided on a rear surface of the main body 1, a hot air outlet 4 is provided on a front surface of the main body 1, and a combustor 6 is provided in a lower part of an air passage 5 from the indoor air inlet 2 to the hot air outlet 4. are doing. A combustion cylinder 7 is provided at an upper portion of the combustor 6. Combustion gas (indicated by a broken line arrow) generated by combustion of the combustor 6 is discharged from the upper end opening 7 a of the combustion cylinder 7 into the air passage 5. Mixed with the airflow (indicated by solid arrows) introduced from the indoor air intake 2 by the propeller fan 3,
The air is discharged from the warm air outlet 4 into the room.
The cartridge tank 8 containing the liquid fuel is arranged in a storage space 10 partitioned by a partition plate 9 on the side of the combustor 6 in the main body 1.

FIG. 7 is a cross-sectional view of an open combustion type hot air heater showing another conventional example shown in the back of Japanese Patent Application Laid-Open No. 1-247956, and FIG. It is sectional drawing of the open combustion type warm air heater which shows the other conventional example performed. In the conventional example shown in FIG. 7, a cartridge tank 8 containing liquid fuel is arranged at the rear of the main body 1 and a propeller fan 3 as a convection fan is mounted on the cartridge tank 8.
And the combustor 6, and the indoor air suction port 2 is disposed on a side surface of the main body 1. On the other hand, in the conventional example shown in FIG. 8, a propeller fan 3 as a convection fan is disposed above a combustor 6, an indoor air suction port 2 is disposed on a rear surface of the main body 1, and a cartridge tank containing liquid fuel is further provided. 8 is arranged at the rear of the main body 1.

[0005]

In the conventional open combustion type hot air heater described above, in the configuration shown in FIGS. 5 and 6, a propeller fan 3 and an indoor air intake 2 are arranged on the rear surface of the main body 1. Therefore, when used, it is necessary to secure a certain amount of extra space behind the main body 1 and to install the main body 1, so that the main body 1 cannot be used close to the wall. In addition, since the cartridge tank 8 is arranged in the main body 1 on the side of the combustor 6, the width of the main body 1 is increased, and a wide installation space in the horizontal direction is required.
There is a problem that the installation place of the main body 1 is restricted.
Further, since the hot air outlet 4 on the front of the main body 1 cannot be provided in front of the cartridge tank 8, the effective width usable as the hot air outlet 4 depends on the size of the cartridge tank. The width of the hot air was about half of the width, and the blowing width of the warm air was narrower than the width of the main body 1.

On the other hand, in the case of the configuration shown in FIGS. 7 and 8,
Since the propeller fan 3 is provided at the rear of the combustor 6 in the main body 1 or at the top of the combustor 6, there is an advantage that the width of the main body 1 can be reduced, but in the case of FIG. Since the container 6, the propeller fan 3, and the cartridge tank 8 are arranged in tandem, the depth dimension of the main body 1 becomes longer. In addition, in the case of FIG. 8, since the width of the propeller fan 3 itself is large, there is a disadvantage that the dimension in the depth direction of the main body 1 becomes long. Therefore, in order to make the depth dimension of the main body 1 short. However, there is a problem in that the thickness of the cartridge tank 8 disposed on the rear side must be reduced to make the cartridge tank itself smaller.
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to provide an open-combustion hot-air heater in which the main body can be made compact and the installation location of the main body is not restricted.

[0007]

According to the present invention, there is provided an open combustion type hot air heater having a main body having an indoor air inlet and a hot air outlet, and connecting the indoor air inlet and the hot air outlet within the main body. An air passage, a convection fan and a combustor disposed in the air passage, wherein the combustion gas of the combustor is mixed with the airflow from the convection fan and discharged from the hot air outlet. In the open-air combustion type hot air heater described above, the convection fan is constituted by a sirocco fan and is disposed above the combustor.

Further, in the open combustion type warm air heater according to the present invention, the sirocco fan has its air suction port disposed horizontally long toward the rear of the main body.

Further, in the open combustion type warm air heater according to the present invention, the indoor air intake is extended vertically on the side surface of the main body, and a part of the combustion air intake is also used.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, an open combustion type hot air heater of the present invention will be described with reference to the drawings. 1 to 4 are side sectional views of an open combustion type hot air heater showing a first embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. FIG. 4 is a sectional view taken along line CC of FIG. 1.

1 to 4, reference numeral 1 denotes a main body, and an indoor air inlet 2 is provided on both sides. Here, the indoor air intake 2 is formed to be long in the up-down direction, so that a part of the combustion air intake is also used. Reference numeral 11 denotes a sirocco fan as a convection fan disposed in the upper portion of the main body 1.
2, a fan casing 16 having a fan 13, a suction port 14 and a discharge port 15. 4 is the body 1
5 is an air passage in the main body 1 from an indoor air inlet 2 provided on both side surfaces of the main body 1 to a hot air outlet 4 provided on the front surface of the main body 1, 5 is a liquid fuel. Is a combustor cover which covers the lower periphery of the combustor 6. Air required for combustion is burned through a combustion air intake hole 17a provided on the bottom surface of the combustor cover 17. It is supplied from the supply air supply fan 18. The combustion air supply fan 18 includes a fan cover 19, a fan 20, and a drive motor 21. Reference numeral 7 denotes a flame outlet 7 of the combustor 6
a cover plate 7b is integrally attached to the upper end opening 7a of the combustion tube 7 so that the air flow from the sirocco fan 11 does not directly hit the combustor 6. I have. Reference numeral 8 denotes a cartridge tank containing liquid fuel, which is located in the main body 1 behind the combustor 6 and the sirocco fan 11 in a storage space 10 partitioned by a partition plate 9. Reference numeral 22 denotes a fuel receiving tray that receives supply of fuel from the cartridge tank 8 and is provided at the bottom of the main body 1.

Next, the operation of the open combustion type hot air heater having the above configuration will be described. When the combustor 6 is heated to a temperature at which the liquid fuel vaporizes, the fuel in the fuel pan 22 is supplied to the combustor 6 by an electromagnetic pump or the like (not shown).
The operation of the combustion air supply fan 18 causes the combustion air required for combustion to be supplied to the combustion air intake hole 17 of the combustor cover 17.
The fuel is sent to the combustor 6 via a to perform combustion. The combustion gas (indicated by the dashed arrow) generated by the combustion of the combustor 6 rises in the combustion cylinder 7 and is discharged into the air passage 5 from the upper end opening 7a. On the other hand, a sirocco fan 11 as a convection fan
The indoor air is taken into the main body 1 from the indoor air inlets 2 provided on both side surfaces of the main body 1 by the operation of the main body 1, and becomes an air flow as shown by a solid line arrow in FIG.
After the air enters the fan casing 16 through the suction port 14 and is blown out from the discharge port 15, it mixes with the combustion gas discharged from the upper end opening 7 a of the combustion cylinder 7 to become hot air, and the hot air blows on the front of the main body 1. It is discharged from the outlet 4 into the room.

Here, in the open combustion type hot air heater according to the first embodiment, as shown in FIG. 1, a convection fan is disposed above the combustor 6 and comprises a sirocco fan 11. Therefore, the indoor air inlet 2 can be provided over a wide range on both side surfaces of the main body 1, and
Conventionally, the cartridge tank 8 can be disposed in the rear space of the main body 1 where the convection fan 3 has been located. Accordingly, the width of the main body 1 can be reduced by the width of the cartridge tank 8, and even if the cartridge tank 8 itself is disposed while maintaining the conventional tank capacity, the depth dimension of the main body 1 does not become too long. As a result, the body 1 can be made compact. Further, since the convection fan 3 is not provided at least on the rear surface of the main body 1 as in the related art, it is possible to use the rear surface of the main body 1 by fitting it to a wall, and the installation location of the main body 1 is not restricted. The installation location can be freely selected. In addition, since the sirocco fan 11 has the suction port 14 of the fan casing 16 disposed horizontally long toward the rear side of the main body 1, the air flow of the sirocco fan 11 in the air passage 5 in the main body 1 is reduced. Since the air flows around the rear of the main body 1 so as to forcibly cool the cartridge tank 8, it is possible to suppress an increase in the temperature of the cartridge tank 8 and obtain a longer mixing distance with the combustion gas in the air passage 5. Can be Further, the indoor air intake 2 is lengthened in the vertical direction on the side surface of the main body 1 so that the combustion air intake is partially used. Therefore, it is necessary to separately provide the convection air and the combustion air intake. There is no effect, and the effect that the appearance of the main body can be refreshed can be obtained.

In the first embodiment, the case where the indoor air inlet 2 is disposed on both side surfaces of the main body 1 has been described as an example. However, in the present invention, the indoor air inlet 2 is connected to the top of the main body 1. Needless to say, it may be arranged on the surface or on the upper part of the front surface, and the same effect as that of the first embodiment can be obtained.

[0015]

As described above, in the open combustion type hot air heater according to the present invention, the convection fan is disposed above the combustor and is constituted by the sirocco fan.
Not only can the indoor air intake be provided over a wide area on both sides of the main body 1, but also the cartridge tank can be arranged in the rear space of the main body where the convection fan for heating has been used up to now. The width of the cartridge can be made smaller by the width of the cartridge tank than that of the conventional configuration, and the depth of the main unit does not change much even if the cartridge tank itself is arranged while maintaining the conventional tank capacity. The effect that the size can be reduced can be obtained. In addition, since there is no need to provide a convection fan or indoor air intake on the rear surface of the main unit as in the past,
Since the rear surface of the main body can be used by being fitted to a wall, the installation location of the main body is not restricted and the installation location can be freely selected.

Further, since the sirocco fan has the suction port of the fan casing arranged horizontally long toward the rear side of the main body, the suction air flow of the sirocco fan flows in the rear of the main body in the air passage in the main body. It flows around to cool the cartridge tank forcibly, so that the temperature rise of the cartridge tank can be suppressed, and the mixing distance with the combustion gas can be long in the air passage, so that hot air without temperature unevenness can be obtained. effective.

Further, since the indoor air intake is lengthened in the vertical direction on the side surface of the main body 1 so that the combustion air intake is partially used, the intakes of the convection air and the combustion air are separately provided. There is no need to provide, and the effect that the appearance of the main body can be refreshed can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an open combustion type hot air heater showing Embodiment 1 of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 1;

FIG. 5 is a cross-sectional view showing a general case of a conventional open combustion type hot air heater.

FIG. 6 is a sectional view taken along the line II of FIG. 5;

FIG. 7 is a cross-sectional view showing another example of the conventional open combustion type hot air heater.

FIG. 8 is a cross-sectional view showing still another example of the conventional open combustion hot air heater.

[Explanation of symbols]

1 body, 2 indoor air intake, 4 hot air outlet, 5
Air passage, 6 combustor, 8 cartridge tank, 9
Partition plate, 10 storage space, 11 sirocco fan, 14
Inlet, 15 outlet, 16 fan casing.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuo Murata 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Inventor Shigeyuki Nakazato 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Rishi Electric Co., Ltd. (72) Inventor Masahiko Maruyama 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Sanishi Electric Co., Ltd. (72) Inventor Yoshitaka Akari 2-3-2 Marunouchi 2-chome, Chiyoda-ku, Tokyo (72) Inventor Minoru Sato 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation F-term (reference) 3L028 AA02 AB05 AC01

Claims (3)

[Claims] 1. A main body having an indoor air intake and a hot air outlet, an air passage connecting the indoor air intake and the hot air outlet in the main body, and a convection fan and a combustor disposed in the air passage. Wherein the combustion gas of the combustor is mixed with an airflow from the convection fan and discharged from the hot air outlet, wherein the convection fan is a sirocco fan. And an open-combustion hot-air heater provided above the combustor. 2. The open-combustion hot air heater according to claim 1, wherein the sirocco fan has a suction opening of a fan casing of the sirocco fan arranged horizontally long toward the rear of the main body. 3. The open combustion type hot air heater according to claim 1, wherein the indoor air intake is vertically elongated on a side surface of the main body and also serves as a combustion air intake.