JPH0694300A - Electromagnetic type water heater - Google Patents

Abstract

PURPOSE:To provide an electromagnetic type water heater which is good in thermal efficiency, safe in handling, and not harmful to the environment. CONSTITUTION:An electric water heater 10 is formed substantially in a rectangular parallelepiped, equipped in the lower part with an electromagnetic unit 1 which contains an induction heating coil 3, and provided above the electromagnetic unit 1 with a tank 2 as an object for heating. The tank 2 is designed to contain water to be heated, made of stainless steel or the like, fitted with a pipe 5 for taking in water and a pipe 6 for discharging water; the tank 2 is heated by electromagnetic induction of the electromagnetic unit 1 and at the bottom part 4 which is contact with the electromagnetic sit 1. Inside the tank 2 radiating fins 7 are fixed integrally to the tank 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic water heater, and more particularly, it relates to an electromagnetic water heater of a type which heats an object to be heated by passing a high frequency magnetic flux through the object to be heated.

[0002]

2. Description of the Related Art Conventionally, for example, to boil hot water in a kitchen,
Gas is used, and hot water is obtained by heating the water introduced into the combustion cylinder with a flame of gas.

[0003]

However, the conventional heating method using gas as described above has the following problems.

(1) The heat generated by the combustion of gas is not used only for heating water but is also radiated to the surroundings, so that the thermal efficiency is poor.

(2) Further, the red-heated part of the flame is hot, which is dangerous.

(3) Further, since there is exhaust gas and exhaust heat, it pollutes the surrounding air and raises the temperature, deteriorating the environment inside the kitchen.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a water heater which has good thermal efficiency, is safe in handling, and does not deteriorate the surrounding environment. The purpose is to provide.

[0008]

In order to achieve the above object, the present invention is an electromagnetic water heater for heating an object to be heated by passing a high frequency magnetic flux through a tank-shaped object to be heated made of a magnetic material. A heat radiation fin is attached to the inside of the tank-shaped object to be heated.

[0009]

In the present invention, the water heater is an electromagnetic induction type water heater that heats by heating high-frequency magnetic flux in the tank of the object to be heated made of a magnetic material, so it has high thermal efficiency and does not use flames and does not have a red heat part. It is safe and does not damage the surrounding environment because there is no exhaust gas or exhaust heat.

Further, since the heat radiation fins are mounted in the tank, when the tank is warmed, the heat radiation fins are also warmed, so that the heat can be efficiently heated.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional view of an electromagnetic water heater according to an embodiment of the present invention, and FIG. 2 is a plan view.

First, the structure will be described. The water heater 10 is formed in a substantially rectangular parallelepiped shape, and an electromagnetic unit 1 having an induction heating coil 3 built therein is provided in the lower part thereof, and the electromagnetic unit 1 is heated. A tank 2 as an object is provided.

The tank 2 is filled with water for heating and is made of a magnetic material such as stainless steel. It has a water inlet pipe 5 and a water outlet pipe 6, and the lower portion 4 in contact with the electromagnetic unit 1 is the electromagnetic unit 1. The entire tank is heated by being heated by the electromagnetic induction action of.

Further, the tank 2 is provided on the bottom 4 in the tank 2.
The fins 7 for heat radiation are fixedly formed integrally therewith.

FIG. 3 is a perspective view of the heat radiation fin 7,
As shown in the figure, a thin metal plate (for example, a stainless steel plate) is bent radially, and when the bottom portion 4 of the tank 2 is heated, it is also transmitted to the fins 7 for heat radiation, so that the water in the tank can be efficiently used. I try to heat it well.

The lower portion 4 of the tank 2 is heated by electromagnetic induction heating because the induction heating coil 3 forming the electromagnetic unit 1 generates an alternating magnetic flux on the bottom 4 of the tank 2 made of a magnetic material. Let the high frequency magnetic flux pass,
As a result, an eddy current is generated in the bottom portion 4, and Joule heat is generated by the eddy current and the specific resistance of the bottom portion 4, thereby heating the bottom portion 4. The heating principle for heating an object to be heated by the skin effect of this kind of high-frequency magnetic flux is well known in the art, and therefore a detailed description thereof will be omitted.

The configuration of this embodiment has been described above. Next, its operation will be described.

First, to boil hot water using this device,
The tank 2 may be filled with water, a temperature setting button or the like (not shown) may be operated to set a desired temperature, and the electromagnetic unit 1 may be powered on. As a result, the water in the tank 2 is heated by the electromagnetic induction action of the electromagnetic unit 1. By the way, in this embodiment, a heating method using electromagnetic induction is adopted.

Therefore, (1) the thermal efficiency is good, and hot water having a desired temperature can be obtained in a short time. (2) Because it does not use a flame like gas and has no red-hot part,
A safe and clean device can be realized. (3) Since there is no exhaust gas or exhaust heat, it has the effect of helping to improve the surrounding environment. In addition, the tank 2
Since the heat dissipation fins 7 are provided integrally with the bottom portion 4 of the heat exchanger, heat is efficiently transferred to the water in the tank 2, and desired hot water can be obtained with high efficiency.

[0021]

As described above, according to the present invention, since the heating method of the electromagnetic induction method of heating by passing the high frequency magnetic flux through the tank of the object to be heated made of the magnetic material is adopted, the thermal efficiency is high, It is safe because it does not use flames and there is no red heat, and there is no exhaust gas or exhaust heat so it does not damage the surrounding environment.

Further, since the heat radiation fins are mounted in the tank, when the tank is heated, the heat radiation fins are also heated at the same time, so that the heat can be efficiently heated.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an electromagnetic water heater according to an embodiment of the present invention.

FIG. 2 is a plan view of the water heater shown in FIG.

FIG. 3 is a perspective view of a radiation fin provided in a tank of the water heater.

[Explanation of symbols]

 1 Electromagnetic Unit 2 Tank 3 Induction Heating Coil 4 Bottom 5 Water Inlet Pipe 6 Water Outlet Pipe 7 Heat Dissipation Fin 10 Water Heater

Claims (1)

[Claims] 1. An electromagnetic water heater that heats an object to be heated by passing a high-frequency magnetic flux through the object to be heated in the shape of a tank, which is made of a magnetic material. An electromagnetic water heater characterized by being attached.