JPH0621712B2 - Hot air heater - Google Patents

Description

The present invention relates to a hot air heater combined with an air cleaning device.

[Conventional technology]

In the conventional combined machine of a warm air heater and an air purifier, the inlet and outlet of the warm air and the air inlet and outlet of the purifier are completely separated, and the warm air discharged from the warm air heater is clean. There wasn't.

In addition, there is also a complex model that tries to clean the hot air discharged from the warm air heater by installing an air purifier upstream of the hot air heater, but in this case, the hot air outlet is from the blower fan center. It was located above.

In the warm air heater, the one in which the warm air outlet is located above the blower fan center is usually called "warm air upblow". It is said that the heating efficiency is generally lower.

Next, an example of this "hot air blast" type conventional hot air heater is shown.

FIG. 3 is a front view of a conventional hot air heater.

FIG. 4 is a side sectional view of a conventional hot air heater.

3 and 4, (1) is a cartridge storage tank,
(2) is an oil pan, (3) is a burner, (4) is an electromagnetic pump, (5) is an oil supply pipe connected from the oil pan (2) to the burner (3) via the electromagnetic pump (4), ( 6) is a combustion cylinder, (7) is a combustion chamber, (8) is a blower fan, (9) is a hot air outlet, (10) is an outer case, (11) is a front panel, (12) is a louver, ( 13) is an operation display unit, (14) is a bottom plate, (15) is an air cleaner installed so as to cover the blower fan (8), (16) is an outer frame, (17) is a dust collector, (18) is a prefilter.

Next, the operation will be described.

As shown in FIG. 4, in the normal operating condition, the combustion heat from the burner (3) is transferred from the combustion tube (6) to the combustion chamber (7), and the cold air from the chamber is converted into the air purifying device (15). Through the prefilter (18), the dust collector (17), and the blower fan (8) to the combustion chamber (7), where the combustion heat and the cold air are mixed, and the hot air is discharged as an appropriate temperature air. It is discharged indoors from the exit (9). At this time, the warm air discharged from the warm air outlet (9) into the room should be clean hot air from which dust and odor have been removed due to the action of the air cleaner (15) upstream of the blower fan (8). become.

Next, when the operation is stopped, or when the fan is in operation (8)
However, the operation when an abnormal stop occurs due to some influence will be explained.

In case of normal shutdown, after extinguishing the fire, burner (3)
Also, the residual heat from the combustion tube (6) rises and only a part of it exits from the hot air outlet (9), but most of them are on the blower fan (8) side. Because it is higher than
It flows toward the blower fan (8) side and accumulates on the upper part of the outer frame (16) of the air cleaning device (15). In addition, if the blower fan (8) abnormally stops during operation, the heat of combustion will remain on the blower fan (8) side until the overheat protector (not shown) in the heater operates. Flow to the outside of the air purifier (15) (1
Accumulate in 6). Even after the overheat protector is activated,
The high-temperature residual heat of the burner (3) and the combustion tube (6) accumulates in the upper part of this body.

[Problems to be Solved by the Invention]

The conventional hot-air heater is configured as described above, and in particular, the hot-air outlet is located below the blower fan center, and an air cleaner is installed upstream of the blower fan so as to cover the entire circumference of the blower fan. If provided, when the heater is used to soften and extinguish the fire, the residual heat of the combustor and the combustion chamber rises to the blast fan side, and is formed by plastics and chemical fibers provided on the blast fan side. Adversely affect the parts of the air purifier. In particular, when the air blower fan is stopped for some reason during use of the heater, until the overheat prevention device provided in the heater operates,
The combustion heat from the burner rises to the blast fan side,
The parts of the air purifier may be deformed or destroyed.

The present invention has been made in order to solve the above problems, and provides a warm air heater that allows hot air to escape to the outside of the machine even when the blower fan stops and does not destroy the air cleaning device. With the goal.

[Means for Solving the Problems]

The warm air heater according to the present invention is provided with a passage for letting out hot air rising when the blower fan is stopped.

[Action]

In the warm air heater according to the present invention, even if the blower fan stops, there is a passage through which the hot air escapes, so that the hot air goes out of the machine, so that the air cleaning device is not destroyed by heat.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. (3) to (18) are the same as in FIG.

(19) is a plurality of small holes formed in the upper part of the outer frame (16),
(20) are holes provided on the upper and lower sides of the blower fan cover. In addition, the dust collector (17) of the air purifier (15) and the play filter
(18) is mounted lower than in the past, and a part through which hot air passes is provided above it.

Next, the operation will be described.

In a normal operating condition, clean air from the air purifying device (15) is sent from a hole in the cover behind the blower fan or a newly provided lower hole (20) as usual. In addition, a small hole formed in the upper part of the outer frame (16) of the air purifier (15).
Also through the upper hole (20) from (19) into the combustion chamber (7), the dust collector (1
7) The air that does not pass through will flow, but the amount of air flow is extremely small, and it does not deteriorate the air cleaning capacity.

Next, when the operation is stopped, or when the fan is in operation (8)
However, the operation when abnormally stopped due to some influence will be described with reference to FIG.

In case of normal shutdown, after extinguishing the fire, burner (3)
Also, the residual heat from the combustion tube (6) rises and only a part of it exits from the hot air outlet (9), but most of them are on the blower fan (8) side. Because it is higher than
It flows to the side of the blower fan (8) and goes out of the heater through a small hole (19) opened in the upper part of the outer frame (16) of the air cleaning device (15). In addition, if the blower fan (8) stops abnormally for some reason during operation, the heat of combustion keeps the heat of the blower fan (8) until the overheat protector (not shown) in the heater operates.
Flows toward the side and is discharged out of the machine through a small hole (19) provided in the outer frame (16) of the air cleaning device (15). Even after the overheat protector operates, high-temperature residual heat of the burner (3) and the combustion tube (6) will come out of these small holes (19) for several minutes.

Even if such a phenomenon occurs, the small holes (19) and holes (2) in the outer frame (16)
Due to the provision of (0), the installation structure of the air purifier (15), the installation position of the dust collector (17), etc., abnormalities may occur not only during normal operation but also on the heater side. Even if it occurs, the dust collector (17) of the air purifier (15) is always protected and can be used safely.

In the above-mentioned embodiment, the arrangement of the parts of the air cleaning device is shifted downward in order to provide a passage for the hot air to escape, but the degree may be determined by the hot air temperature and the heat resistance of the parts.
You may not move at all.

Further, in the above-described embodiment, the cover and the frame are provided with holes and holes for the escape of hot air, but a clearance, a radiator plate or other cooling means may be used.

In addition, although the oil hot air heater is illustrated in the above embodiment,
It may be a gas warm air heater or another warm air heater.

Further, in the above-mentioned embodiment, the "warm air downward blowing" type is shown, but the "warm air upward blowing" type may be used.

Further, in the above-described embodiment, the example of the heater is given, but the heater is not limited to being used indoors, and may be used outdoors or in a corridor.

[Effects of the Invention] As described above, according to the present invention, the hot air heater is provided with the escape path for letting out hot air, and the hot air is configured to be discharged even when the blower fan is stopped. There is no danger of destroying the cleaning device, and there is an effect that a safe hot air heater can be obtained.

[Brief description of drawings]

FIG. 1 is a side sectional view of a warm air heater showing an embodiment of the present invention, FIG. 2 is an operation explanatory view of a warm air heater showing an embodiment of the present invention, and FIG. 3 is a conventional hot air heater. A front view of the heater and FIG. 4 are side sectional views of a conventional warm air heater. (1): Cartridge storage tank, (2): Oil pan, (3): Burner, (4): Electromagnetic pump, (5): Oil supply pipe, (6): Combustion cylinder,
(7): Combustion chamber, (8): Blower fan, (9): Hot air outlet, (1
0): Exterior case, (11): Front panel, (12): Louver, (1
3): Operation display, (14): Bottom plate, (15): Air purifier, (1
6): Outer frame, (17): Dust collector, (18): Prefilter, (1
9): Small hole, (20): Hole. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A blower fan for producing hot air by (a) a heat radiating section for generating hot air and (b) hot air rising from the heat radiating section to generate hot air and blowing it out from a hot air outlet. And (c) an air purifier having an air purifying device that supplies purified air to the blower fan, when the blower fan is stopped, the hot air generated from the heat radiating unit is kept so as not to touch the air purifier. A hot air heater characterized by having a passage for escape.