JPH0875122A - Vaporizer - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide stable vaporization in a vaporizer provided with a hot plate having a U-shaped heater built therein. [Structure] The thickness of the coating on the surface is changed depending on the position of the heating plate, and the thickness of the coating on the surface of the heating plate having the heater U-shaped portion is made thicker than other portions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a vaporizer mounted on a domestic petroleum water heater.

[0002]

2. Description of the Related Art Conventionally, in this type of vaporizer, in order to promote vaporization when fuel is supplied onto the hot plate, the temperature of the hot plate is kept in an appropriate temperature range, and the fuel is kept on the hot plate. The film becomes a film boiling state, and by applying a heat-resistant paint to the surface of the hot plate so that the evaporation rate does not decrease, small irregularities are provided on the surface of the hot plate to suppress the surface tension of the droplets and prevent the film boiling. Was there.

[0003]

However, the surface temperature of the entire heating plate is not uniform due to the shape of the built-in heater.
It has a temperature distribution. Therefore, it is difficult to control the entire hot plate to a temperature range suitable for vaporization, and the hot plate temperature is low in some parts of the hot plate, resulting in poor vaporization, and in some parts, the temperature of the hot plate rises too much. As a result, there is a problem that vaporization tends to be unstable due to film boiling.

An object of the present invention is to solve the above problems and provide stable vaporization of fuel.

[0005]

In order to achieve the above object, the present invention provides a hot plate in which a U-shaped heater is incorporated laterally, a fuel supply device for supplying liquid fuel to the hot plate, and the hot plate. Is provided with a temperature detection unit for detecting the temperature of the heater and controlling the input power of the heater, and a heat resistant paint is applied to the surface of the hot plate, and the film thickness of the heat resistant paint is changed depending on the position of the hot plate. .

Further, the heat-resistant coating on the surface of the heating plate in the portion close to the U-shaped portion of the heater is made thicker than the other portions.

[0007]

[Function] In the temperature distribution of the hot plate, the temperature of the low temperature part is kept in an appropriate temperature range, and by this, for the part where the temperature becomes too high, the film thickness of the coating is increased, The paint exerts a heat insulating effect, the surface temperature of the hot plate is properly maintained, and the entire hot plate is maintained in a temperature range suitable for vaporization.
Stable vaporization is provided.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a vaporizer showing an embodiment of the present invention. Reference numeral 1 is a U-shaped heater. Reference numeral 2 is a hot plate made of aluminum diast in which a U-shaped heater 1 is incorporated in one lateral direction, and 3 is a fuel supply device for supplying liquid fuel in the lateral direction of the hot plate 2. Reference numeral 4 is a temperature detection unit for detecting the temperature of the heating plate 2 and controlling the input power of the heater 1. The surface of the hot plate 2 is coated with heat resistant paint.

In the above construction, the U-shaped heater 1 is built in the heating plate 2. However, the A portion of the heating plate 2 having the U-shape of the heater 1 and the B portion of the heating plate 2 have heaters of the U shape. The area A having the U-shaped portion has a larger heater surface area, the amount of heat supplied from the heater 3 increases, and the temperature becomes higher than that of the portion B. Combustion by the fuel supplied from the fuel supply device 3 is supplied to the A and B parts, respectively.

The temperature detector 4 controls the input of the heater 1 so that the temperature of the portion B on the side where the surface temperature of the heating plate 2 becomes low falls within the optimum temperature range for vaporization. This time,
The surface temperature of the A part is higher than that of the B part, but by increasing the film thickness of the paint applied to the surface of the hot plate to be thicker than the B part, the temperature of the coated surface is lowered and the optimum temperature range for vaporization is reached. It can provide stable vaporization that can be kept.

[0011]

According to the present invention, by changing the film thickness of the paint depending on the position of the hot plate, it is possible to maintain the optimum vaporization temperature for vaporizing the entire hot plate and provide stable vaporization. .

[Brief description of drawings]

FIG. 1 is a perspective view of a vaporizer showing an embodiment of the present invention.

[Explanation of symbols]

 1 Heater 2 Hot Plate 3 Fuel Supply Device 4 Temperature Detector

Claims (2)

[Claims] 1. A hot plate having a U-shaped heater laterally incorporated therein, a fuel supply device for supplying a liquid fuel to the hot plate, a temperature of the hot plate, and an input power of the heater being controlled. A vaporizer comprising a temperature detection unit, which coats a heat-resistant paint on the surface of the hot plate and changes the film thickness of the heat-resistant paint depending on the position of the hot plate. 2. A vaporizer according to claim 1, wherein the heat-resistant coating on the surface of the heating plate in the portion approaching the U-shaped portion of the heater is thicker than other portions.