JPH01302066A - Space heater - Google Patents

Abstract

PURPOSE:To reduce the noise of a fan, and to remove an unpleasant feeling when hot air is brought into contact with a human body by providing a hot air radiation and diffusing port made of ceramics in an opening on the front face of a box. CONSTITUTION:A box 1 for forming the external appearance of a hot air supplying apparatus is opened with an air intake port 2 on its rear face and a hot air diffusing port 3 on its front face. A fan 20 is rotated substantially simultaneously upon burning of a burner 14, combustion gas raised by a draft and air intaken from the port 2 are introduced while mixing through a mixer 24 to the box 1, and further diffused from a hot air radiation and diffuser port 22 as hot air out of the box, i.e., to a space to be heated. In this case, when the port 22 made of ceramics is heated by the hot air, an infrared ray is irradiated from its surface by means of radiation. That is the part of the quantity of heat of the hot air is converted into radiation energy. Accordingly, since the quantity of heat to be radiated by the hot air is reduced and the quantity of the hot air can be reduced, the noise of a fan can be decreased, and an effect of removing an unpleasant feeling when hot air is brought into contact with a human body is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a heating device that burns gas or kerosene fuel.

2. Description of the Related Art A conventional heating device is a structure as shown in FIGS. 3 and 4, and is generally a gas hot air fan for home use, which is called a fan heater. In the figure, reference numeral 1 denotes a box that constitutes the external appearance of the hot-air fan, and an air intake port 2 is opened at the rear of the box, and a filter 3, usually made of a full mesh, is attached to the box. In addition, a hot air outlet 4 is opened on the front, and normally,
This air outlet is divided by the louver 5. Box body 1
Inside, there is a gas burner 6, a combustion chamber 7 provided above the gas burner 6, and a cross 70-type fan 8 provided below the gas burner 6.
and. A hot air path 9 is provided between the combustion chamber 7 and the fan 8.
It is. The gas burner 6 has an ejector-type mixing tube 10 therein, and the flame hole 11 is a ceramic burner. A thermocouple 13 for determining the presence or absence of flame is placed above the combustion chamber 7 and is visible from the outside of the combustion chamber 7.

In the above configuration, when the fuel gas is ejected from the gas nozzle 12, the ejector of the burner 6 sucks in the combustion air, which becomes a mixture while passing through the mixing pipe 10,
and generates high-temperature combustion gas inside the combustion chamber 7. The fan 8 is rotated almost simultaneously with the combustion, and the combustion gas is mixed with the air sucked through the air intake port 2 and guided to the lower part of the box body 1 through the hot air path 9, and is further heated as warm air from the air outlet 3. Air is blown out from the outside of the box into the space to be heated.

Problems to be Solved by the Invention However, in the above configuration, the temperature of the hot air blown out from the air outlet 3 is set to 1 to prevent accidents such as fires and burns.
It is necessary to reduce the temperature to about 00 to 150°C, and 1000°C.
The amount of air that must be mixed with the combustion gas at a temperature exceeding 'C is more than 10 times the amount of air required for combustion. In addition, in the heating method using a hot air fan, in order to reduce the temperature distribution in the room to be heated, it is necessary to generate air convection in the room, and the speed of hot air blown from the outlet 3 is 1 to 2 m 7 seconds.

Therefore, when there is a person in front of the hot air outlet 3 or when the hot air blower is used in a small room, the warm air hits the body directly and is uncomfortable.

Furthermore, in order to reduce the temperature of the hot air, the capacity of the fan 8 inevitably increases. For this reason, the noise generated by the blades of the fan 8 and the air is not large, and is approximately 40 phons in a normal product, which is a big problem as a source of noise when used in conjunction with audio equipment such as a stereo system or when sleeping. It became.

The present invention solves this conventional problem, and by using ceramics having a large number of openings for the hot air outlet, a part of the heat of the combustion gas is converted into radiant energy, and the hot air is By reducing the volume of hot air by the amount of heat converted to radiant energy, the fan makes less noise, and the speed at which the hot air blows out is lowered, reducing the risk of injury when it hits the body. The purpose is to eliminate pleasure.

Means for Solving the Problems In order to solve the above problems, the heating device of the present invention includes a box body which is provided with a burner inside and has an opening at the rear and the front, and an opening at the rear of the box body. A fan that is installed inside the box body and blows air into the box body, and a hot air radiating outlet that is installed in the front opening of the box body and has a number of openings that are made of ceramic and serve as hot air outlets. It consists of

Operation With the above configuration, hot air containing a mixture of combustion gas and air is guided to the outlet of the ceramic surface having many openings, and a part of the heat value of the combustion gas is converted into radiant energy, and the volume of hot air is increased by that amount. By reducing the amount of heat generated by the fan, the fan's noise level is reduced, and the blowing speed of hot air is also reduced, eliminating discomfort when it hits the body.

EXAMPLE Hereinafter, a heating device using gas as a heat source, which is an example of the present invention, will be explained based on the accompanying drawings of FIGS. 1 and 2.

In the figure, 1 is a box that constitutes the external appearance of the hot air fan, and has an air intake port 2 at the rear and a hot air outlet 3 at the front. A gas burner 14 is installed inside the box body 1.
A combustion chamber 17 is provided around the combustion chamber 17, which is constituted by a first rectifier plate 15 and a second rectifier plate 16 made of a heat-resistant material such as stainless steel. Further, the gas burner 14 is a so-called Bunsen burner in which an ejector-type mixing tube 18 and a flame hole 19 are integrated. Above the burner, a thermocouple 13 for determining the presence or absence of a flame is placed facing outside the combustion chamber 17. In addition, a propeller-type fan 20 is provided at the air intake port 2 on the rear side of the box body, and on the other hand, on the front side of the box body 1, there are a large number of circular holes 2 made of alumina fiber cracks for passing hot air.
1 is provided with a hot air radiating outlet 22 which is open. The upper part of the combustion chamber 17 is a mixing part 24 for mixing combustion gas with air supplied from the outside of the box body 1 by a fan 20, and a third baffle plate 24a is provided in front of the fan 20 to diffuse the air flow. We are trying to Further, an air port 25 is provided at the lower rear surface of the box body 1 as an air port for combustion.

Although not shown in the above configuration, when fuel gas is ejected from the nozzle, combustion air is sucked in by the ejector of the burner 14, which becomes a mixture while passing through the mixing pipe 18, burns in the flame hole 19, and inside the combustion chamber 17. to generate high-temperature combustion gas. At this time, air for combustion is sucked through the air port 25 at the lower rear of the box 1 by the draft force of the flame. On the other hand, the fan 20 is rotated almost simultaneously with the combustion, and the combustion gas rising due to the draft force is mixed with the air sucked through the air intake port 2 and guided to the front of the box body 1 through the mixing section 24. In addition, hot air radiation outlet 2
2. It is blown out as warm air to the outside of the box body 1, that is, to the space to be heated. At this time, when the hot air radiation outlet is heated by the hot air, infrared rays are radiated from the surface of the ceramic outlet. Therefore, a portion of the heat contained in the hot air is converted into radiant energy.

As mentioned above, by blowing hot air containing a mixture of combustion gas and air through a ceramic outlet and converting a portion of the heat of the combustion gas into radiant energy, it is possible to reduce the amount of heat that should be emitted by the hot air. . Therefore, the volume of hot air can be reduced, which has the effect of reducing fan noise and eliminating discomfort when it hits the body. Also, unlike conventional hot air heaters, the surface of this ceramic outlet uses radiation to emit infrared rays with relatively long wavelengths, that is, far infrared rays, making it more comfortable than heating using only hot air.

Effects of the Invention As described above, the heating device of the present invention has the following effects.

(1) By blowing hot air containing a mixture of combustion gas and air through a ceramic outlet and converting a portion of the heat of the combustion gas into radiant energy, the amount of heat that should be released by the warm air, the volume of hot air Since the noise of the fan can be reduced, the noise of the fan can be reduced.

(2) Since the volume of warm air can be reduced, the discomfort caused when the wind hits the body due to slow wind speed is eliminated.

(3) Unlike conventional hot air heaters, infrared rays with relatively long wavelengths, that is, far infrared rays, are emitted from the surface of the ceramic hot air radiating outlet using radiation, so both hot air and radiation can be obtained. .

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a heating device according to an embodiment of the present invention, FIG. 2 is a perspective view of a burner used in the heating device according to an embodiment of the present invention, and FIG. 3 is a diagram of a conventional heating device. The sectional view, FIG. 4, is a front view of a conventional heating device. 1... Box body, 2... Air intake port, 3... Warm air outlet, 14...
Burner, 20... Fan, 22... Hot air radiation outlet. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
Jii stock

Claims (1)

[Claims] a burner; a box body having the burner therein and openings at the rear and front; and a fan provided at the rear opening of the box body or inside the box body and blowing air into the box body. . A heating device comprising: a hot air radiating outlet provided in the front opening of the box, made of ceramics, and having a plurality of openings.