JPH0728523Y2 - Warm air blowing stove - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a warm air blowing stove that guides warm air blown from a convection blower to a blowout port of a stove housing.

(Prior Art) Conventionally, in a hot air blowing stove such as a fan heater,
A burner, a heat exchanger through which the combustion gas of the burner circulates, and a convection blower are installed in the stove casing, and the atmosphere heated by this heat exchanger is blown from the stove casing by the convection blower. The thing that blows out is known.

According to this warm air blowing stove, the warm air blown by the convection blower is blown into the stove housing, and then the hot wind blows the hot air out of the stove housing.

(Problems to be solved by the invention) In such a warm air blowing stove, when the blowout part of the convection blower and the blowout port of the stove casing face each other, the warm air of the convection blower is heated. Since it goes straight to the outlet of the body, the warm wind blows out indoors without being significantly weakened.

However, while the outlet of the stove housing is installed in the lower part to heat the feet, the installation position of the convection blower often changes depending on the model etc.,
In many cases, the height of the outlet of the convection blower and the height of the outlet of the stove housing did not match.

In such a case, the warm air blown out from the convection blower collides with the peripheral wall of the stove casing and weakens the wind force, so the blowing force of the warm air blown out from the stove casing decreases, and There was a problem that hot air could not be supplied sufficiently. In particular, at the time of small combustion where the wind force blown from the convection blower is small, the amount of air blown from the blowout port was extremely small.

Further, in this kind of warm air blowing stove, the blowing port of the stove housing may be closed. For example, when the louver installed at the outlet is in a closed state or when there is a shield in front of the outlet.

When driving the convection blower in such a state, the warm air blown out from the convection blower stays in the stove casing and the temperature inside the stove casing rises abnormally. It had a problem that it was damaged.

In view of the above-mentioned conventional problems, the object of the present invention is to guide the warm air blown out from the convection blower to the outlet of the stove casing smoothly, detect the closed state of the outlet, and improve the safety. It is to provide a warm air blowing stove that can.

(Means for Solving the Problem) In order to solve the above problems, the invention of claim (1) provides a burner, a heat exchanger through which combustion gas of the burner flows, and convection in a stove housing. And a hot air blowout stove in which the atmosphere heated by the heat exchanger is blown out from the blowout port of the stove casing by the convection blower, and is blown from the convection blower into the stove casing. The warm air blown along the inner surface on one side to the outlet and a hot air duct having an air escape hole on the surface facing the inner surface on one side, and the warm air blown out from the air escape hole. A temperature switch for preventing overheating is provided to stop the combustion operation of the burner when the ambient temperature inside the stove casing becomes abnormally high.

The invention according to claim (2) is that the convection blower according to claim (1) includes a fan casing communicating with the warm air duct, and a motor casing installed below the fan casing, and the overheat prevention temperature switch is provided. Is attached to the outer surface of the motor casing located on the air escape hole side of the warm air duct.

(Operation) According to the invention of claim (1), the air heated by the heat exchanger is blown into the warm air duct by the convection blower. The warm air blown into the warm air duct flows along the inner surface on one side of the warm air duct and is blown out from the outlet of the stove housing.

Here, when this outlet is closed,
The warm air in the warm air duct flows into the stove housing through the air escape holes. Then, since the temperature inside the stove casing rises abnormally due to this inflowing hot air, the overheat prevention temperature switch is activated, and the burner combustion operation is stopped.

According to the invention of claim (2), since the hot air blown from the air escape hole is blown to the overheat prevention temperature switch side, the closed state of the blowout port of the stove casing is detected early, and the burner combustion is performed. Driving stops.

(Embodiment) FIGS. 1 to 3 show an embodiment of the present invention. FIG. 1 is a schematic configuration view showing a front view of a radiant warm air blowing stove, and FIG. It is the schematic which shows the state seen from the side surface of the radiant type warm air blowing stove.

In the figure, reference numeral 1 is a stove casing, a pot burner 2 is installed in the lower center portion, a combustion cylinder 3 is installed above the pot burner 2, and the combustion cylinder 3 and a reflector surrounding the combustion cylinder 3 are installed. The radiant heating of the room is performed by 4. A horizontally elongated heat exchanger 5 is installed on the stove casing 1. Combustion gas from the pot burner 2 and the combustion cylinder 3 flows through the heat exchanger 5 and is discharged from the chimney 6, and the atmosphere around the heat exchanger 5 is heated by the combustion gas. An electromagnetic pump 7 is installed on one side of the lower part of the stove casing 1,
The electromagnetic pump 7 supplies oil into the pot burner 2 via the oil feed pipe 8. Further, a hot air outlet 9 is provided on one side of the lower part of the front panel of the stove housing 1. The outlet 9 is for heating the feet, and a plurality of louvers 10 installed on the outlet 9 can change the outlet direction.

On the other side of the stove housing 1, there is a convection blower also shown in FIG.
11 are installed. The convection blower 11 has a fan casing 13 containing a fan 12 in the upper part thereof and a motor casing 15 containing a motor 14 in the lower part thereof. The outer shape of the fan casing 13 is formed into a flat cylindrical shape, and a suction cylinder 16 for sucking heated air in the vicinity of the heat exchanger 5 communicates with the center of the upper portion thereof. Further, a blow-out tube 17 is extended on the side surface of the fan casing 13, and a hot air duct 18 is connected to the tip of the blow-out tube 17.

The warm air duct 18 has a connecting portion 19 that connects to the blowoff tube 17.
And a duct body 20 extending from the connecting portion 19 toward the outlet 9 of the stove housing 1. The duct main body 20 has a larger flow cross-sectional area as it goes toward the outlet 9, so that the tip opening corresponds to the outlet 9. Further, the duct body 20 is inclined toward the outlet 9, and an air escape hole 21 extending in the lateral direction is provided in a part of the lower surface wall of the duct body 20.

The outer shape of the motor casing 15 of the convection blower 11 is a substantially rectangular parallelepiped shape, and the front surface thereof, that is, the surface of the duct body 20 on the air escape hole 21 side, is an overheat prevention temperature switch (hereinafter referred to as a temperature switch) 22. Is installed. The temperature switch 22 has a heat sensitive element such as a bimetal, and when the ambient temperature rises and becomes an abnormal temperature (for example, 90 ° C.), the switching element is turned off and the energization of the electromagnetic pump 7 is stopped. The combustion of the pot burner 2 is stopped.

According to this embodiment, the combustion gas generated in the pot burner 2 flows into the heat exchanger 5 through the combustion tube 3 and is discharged from the chimney 6. When this combustion gas is flowing in the heat exchanger 5, the atmosphere around the heat exchanger 5 is heated. This heated air is guided into the fan casing 13 of the convection blower 11 via the suction cylinder 16, and further, as shown by the solid line arrow in FIG. It is blown out indoors.

Further, when the hot air is blown into the hot air duct 18, it flows in the horizontal direction as shown by the solid line arrow in FIG. 2, but the hot air duct 18 is inclined obliquely downward, so the hot air duct It is guided along the inner surface of the upper wall of 18 and guided to the outlet 9 without leaking from the air escape hole 21.

On the other hand, the outlet 9 is blocked by the louver 10,
Alternatively, when there is a shield covering the outlet 9, the air volume from the outlet 9 is zero or significantly limited. As a result, the warm air in the warm air duct 18 passes through the air escape hole 21 as shown by the two-dot chain line arrow in FIG.
It is blown into the interior of the stove housing 1 and the temperature inside the stove housing 1 rises. Further, at this time, since the temperature switch 22 is attached to the front surface of the motor casing 15 located on the air escape hole 21 side, this warm air hits the temperature switch 22 to detect an abnormal temperature in a short time, and immediately burns. Stop driving.

(Effects of the Invention) As described above, according to the invention of claim (1), the warm air blown from the convection blower is guided to the outlet of the stove casing by the warm air duct to smoothly enter the room. You can blow out. Further, when the outlet is closed, the overheat preventing temperature switch operates to stop the combustion operation, which has the advantage of improving safety.

According to the invention of claim (2), not only the effect of the invention of claim (1) is achieved, but also the hot air blown from the air escape hole hits the overheat prevention temperature switch, and the blowout port is closed. Since the state is sensed in a short time, there is an advantage that the combustion stop time in an abnormal time is shortened.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a schematic front view of a warm air blowing stove, FIG. 2 is a schematic side view of the warm air blowing stove, and FIG. 3 is convection. It is a perspective view showing an air blower and a warm air duct. 1 ... Stove casing, 2 ... Pot burner, 5 ... Heat exchanger, 9 ... Outlet, 11 ... Convection blower, 13 ... Fan casing, 15 ... Motor casing, 18 ... Warm air Duct, 21 ... Air vent, 22 ... Temperature switch to prevent overheating.

Claims (2)

[Scope of utility model registration request] 1. A stove housing is provided with a burner, a heat exchanger through which combustion gas of the burner flows, and a convection blower, and an atmosphere heated by the heat exchanger is provided by the convection blower. In the warm air blowout stove blown out from the blowout port of the stove casing, in the stove casing, while guiding the warm air blown out from the convection blower to the blowout port along the one side inner face, the one side inner face A hot air duct provided with an air escape hole on the surface facing the air vent, and when the ambient temperature in the stove casing becomes abnormally high due to the hot air blown out from the air escape hole, the combustion operation of the burner is stopped. A warm-air blowing stove characterized by having a temperature switch for preventing overheating. 2. A convection blower comprises a fan casing communicating with a warm air duct, and a motor casing installed below the fan casing, and an overheat preventing temperature switch is provided on the air escape hole side of the warm air duct. The warm air blowing stove according to claim 1, wherein the warm air blowing stove is attached to an outer surface of the motor casing located at.