JPH01200143A - Electric instantaneous water heater - Google Patents

Abstract

PURPOSE:To efficiently utilize the energy of electric heating elements for raising the temperature of water by heating at a high speed a water current which is as thin as a film, within a cylindrical channel between an inner wall and an outer wall by a radiant heat of an electric heating element within the inner wall and an air convection heat. CONSTITUTION:A channel 4 is formed in a gap of several millimeters between the inner wall 2 and the outer wall 3 of a vessel body 1, and electric heating elements 5 are sealed in the vessel body 1. A water inlet port 8 and a water discharge port 9 are provided in a top plate 6 and a bottom plate 7 of the dual wall of the case body 1 communicating with the case body 1. The inner wall of the top plate 6 and the bottom plate 7 of the vessel body 1 is made of a copper material and the outer wall 3 thereof is made of aluminum. A pressure release safety valve 10 for preventing the pressure rise within the vessel body 1 is provided. Water is introduced through a water inlet port 8 of the bottom plate 7, and is raised in the temperature to approximately 90 deg. while passing through the space and channel between the inner wall 2 and outer wall 3 of the bottom plate 7, the vessel body 1 and the top plate 6, which have been heated to 100 deg. or higher, and hot water is supplied through the water discahrge pump 9.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a water boiler/water heater that heats water at high speed with an electric heater.

(Prior Art) Conventional instantaneous water heaters generally use gas. There are also water heaters that can rapidly supply hot water by inserting an electric heater into the water storage tank and constantly heating it to a high temperature.

(Problem to be solved by the invention) Conventional, widely used gas-powered instant water heaters can instantly produce hot water using a large amount of gas combustion energy, but because the heat source is gas, there are problems in terms of economy and safety. Moreover, it had the disadvantage that it could only be installed in a predetermined location.

Next, with an electric water heater, constantly heating water to around 90°C causes a lot of heat loss and wastes a lot of energy. Moreover, there is a drawback that at a temperature of about 70° C., reheating is required when hot water is supplied.

The problem to be solved by the present invention is to solve these conventional problems and shortcomings, and to instantly boil water at a temperature of around 90 degrees with a single electric heater that is safe, easy to handle, and can be installed anywhere. Our objective is to provide a practical instantaneous water heater that can.

(Means for Solving the Problems) The structure of the present invention that solves the problems is as follows: 1) In a sealed container in which a cylindrical waterway with a narrow gap is formed between an inner wall and an outer wall made of a material with good thermal conductivity, An electric heating element is enclosed in a required distance from the inner wall, and an inlet and a water outlet are provided in the water channel between the inner wall and the outer wall. 2) An electric instant water heater characterized by rapidly heating a water stream spread over a wide surface area in a thin film-like manner; 2) An electric instant water heater according to claim 1, wherein the outer wall of the container is heat-insulated; 3) Between the inner wall and the outer wall. 4) The electric instant water heater according to claim 1, wherein a water pipe connected in series with the water channel is disposed inside the container. 4) The electric instant water heater according to claim 1, wherein a heat storage plate is enclosed inside the container. 5) The inner and outer walls of the container. 6) The electric instantaneous water heater according to claim 1, wherein a spiral partition wall is provided in the waterway between the container and the waterway so that the water flow in the waterway flows in a spiral pattern. 7) The bathtub water heater according to claim 1, wherein a suction pump is provided in the middle; 7) The electric instantaneous water heater according to claim 1, wherein another electric heater is provided inside the water channel formed between the inner wall and the outer wall of the container. 9) The electric instant water heater according to claim 1, wherein the electric heating element is provided with a hole through which the electric heating element is passed, and heat absorbing plates with a wide area extending horizontally from the inner wall of the container are provided in multiple stages.9) The water pipes connected in series are U-shaped. The electric instantaneous water heater according to claim 3 10) The electric instantaneous water heater according to claim 3, in which the series-connected water pipes are bent in a meandering shape 11) A material with good thermal conductivity extends horizontally from each of the series-connected water pipes and the inner wall of the container. 12) The electric instantaneous water heater according to claim 3, wherein a plurality of heat-absorbing plates are arranged protruding alternately. It is in the electric instant water heater described in item 3.

(Function) In both cases of the present invention, water is supplied from the inlet, passes through a waterway between the inner and outer walls of the container, and while flowing through the waterway, it reaches a high temperature due to radiant heat from the electric heating element inside the container and air convection heat transfer. The temperature rises due to heating by the inner wall, which is heated to . The water in the water channel is thinly spread into a cylindrical shape and has an extremely wide heat exchange area, and the water is heated rapidly by contacting the inner wall surface, which is heated to a high temperature of 90°C or more inside the closed container. Hot water is rapidly raised to around °C and then supplied from the spout.

Here, if the outer wall of the container is insulated, heat radiation will be reduced and energy efficiency will be improved. Furthermore, by arranging a water pipe connected in series to the water channel in the container, it is possible to greatly raise the temperature to near the boiling point at the end, or to preheat the water before entering the water channel in order to improve thermal efficiency. This water pipe is
By bending the water pipe into a serpentine shape, or by protruding a heat absorbing plate or straight plate made of a material with good thermal conductivity, the final heating and
Preheating can be done efficiently.

Furthermore, in order to increase the thermal efficiency or the heat storage Wk of the container, if a heat storage plate is provided inside the container or a heat absorption plate is horizontally protruded from the inner wall of the container, the amount of heat transfer, heat conversion efficiency, and conversion speed can be increased.

If another electric heater is provided inside the container, the heating speed and hot water supply efficiency can be further increased.

In addition, as an application of the present invention, by connecting the bathtub with a hose between the water inlet and the water outlet, and installing a suction pump in the middle to circulate the water, hot water can be supplied to the bathtub when necessary, and the bathtub can be heated to the desired temperature. temperature can be maintained.

(Example) Hereinafter, the present invention will be explained based on examples.

First embodiment (see Figures 1 to 3) This embodiment shown in Figures 1 to 3 is claimed in claim 1 of the claims.
This is an embodiment of the first invention described, in which a cylindrical water channel (4) is formed in a gap of number n between the inner wall (2) and the outer wall (3) of the cylindrical container (1), and Three electric heating elements (5) were sealed inside the body. And the container (1) communicating with the waterway (4)
This is an example in which a water inlet (8) and a water spout (9) are provided on a double-walled top plate (6) and bottom plate (7). Container (1) and top plate (
6) and the bottom plate (7) are made of copper material, and their outer wall (3) is made of aluminum. In the figure, OI is a pressure release safety valve that prevents pressure rise within the container.

In this embodiment, water is introduced from the water inlet (8) of the bottom plate (7), and the inner wall (2) is heated to 100'C or more by the electric heating element (5). The hot water is heated to 90° C. while passing through the space/channel between the inner wall (2) of the top plate (6) and the outer wall (3), and is then supplied from the spout (9).

Second Embodiment (See FIG. 4) The embodiment shown in FIG. 4 is an embodiment of the second invention according to claim 2.

This example is an example in which a refractory material ff1 (II) is attached to the outer periphery of the outer wall of the container (1) of the first example to prevent heat dissipation from the container and improve heat conversion efficiency. The rest is the same as the first embodiment.

Third embodiment (see FIG. 5) The third embodiment shown in FIG. This is an example in which water is introduced through a water pipe (!no) through the bottom plate, and hot water is supplied from the outlet (9) of the bottom plate (7) through the water channel of the top plate (6) and the container (1). , water channel between the inner and outer walls of the container (1) and the bottom plate (7) (the water heated in I'4 also enters the water pipe in the container (1), is heated to a higher temperature and is discharged) The structure is such that the temperature of the hot water can be made higher.The pond is the same as in the first embodiment.

Fourth Embodiment (See FIG. 6) The fourth embodiment shown in FIG. 6 is an embodiment of the fourth invention described in claim 9.

In this example, by making the water tube into a zero-shape, a long path of the water channel inside the container was formed, and a heat exchange area was ensured to ensure temperature rise. Water is introduced from the water inlet (8) of the bottom plate (7), passes through the water channel (4) of the container (1), passes from the top plate (6) through the υ-shaped water pipe (1), and is supplied from the water outlet (9). be done. The pond has the same structure and operation and effect as the third embodiment.

Fifth Embodiment (See FIG. 7) The fifth embodiment shown in FIG. Similar to the fourth embodiment, this is an example in which the heat exchange area is increased and the temperature can be raised to a higher temperature.

Sixth embodiment (see FIG. 8) The sixth embodiment shown in FIG. Three metal blades (In
This is an example of providing multiple stages separated for a certain period of time.

In this embodiment, the heat storage plate (11) absorbs the radiant heat and air heat from the electric heating element (5) inside the container (1), stores the heat, and reduces temperature fluctuations during use. This is an example in which a large amount of heat is stored in the preheating of the electric heating element (5), and the water is quickly boiled and heated even after hot water supply starts, and the other features are the same as the first embodiment in terms of structure, function, and effect. It is.

Seventh Embodiment (See Figure 9.10) The seventh embodiment shown in Figure 9 is an embodiment of the fifth invention as set forth in claim 5, in which the inner wall (2) of the container (1) is
) and the outer wall (3) are divided into spiral partition walls (IQ), and the waterway (4) flows through it while rotating in a spiral shape.

In this embodiment, since the water channel (4) in the container +1) has a spiral shape, the water passage time becomes longer, and the amount of heat transferred is increased accordingly, thereby increasing the rate of temperature rise. Other structures, functions, and effects are similar to those of the first embodiment.

Eighth embodiment (see FIG. 11) The embodiment shown in FIG. 11 is an embodiment of the sixth invention as set forth in claim 6. This embodiment connects the inlet (8) of the electric instantaneous water heater of the third embodiment to the hose (1) via the suction pump (1).
1 connects to the water stored in the bathtub (1) and 1 spout (9)
This is an example of using a hose (restored to a bathtub (1) in one spot and using it as a bathtub (1r4) water heater or heat insulating device).If you use this device, you can boil water in a bathtub (11) with a compact electric instant water heater. It can be operated easily in a narrow space without requiring a large space and strong safety measures like a gas kettle, and it can be easily kept warm.

Ninth embodiment (see FIG. 12) The ninth embodiment shown in FIG. 12 is an embodiment of the seventh invention according to claim 7, and the inner wall of the top plate (6) and This is an example in which another electric heater 4 is enclosed in the water channel between the outer wall and the water channel.In this embodiment, the electric heater @+1 is installed separately and placed in the water channel to increase the temperature of the water and ensure high temperature. This is an example of reaching . The rest is the same as the third embodiment.

Embodiment 1 (see FIG. 13) Embodiment 1 shown in FIG. This is an example in which horizontal wide-area copper heat absorbing plates (goods) having heating element penetration holes (20) are installed in multiple stages on the inner wall of the container (+).
Similar to the invention, the heat of the electric heating element (5) inside the container is stopped by a heat absorbing plate (goods) with a wide area, and the heat is transferred from the heat absorbing plate (from the small part to the inner wall (2) of the container (1)). conduction to the inner wall (2
) is maintained at high temperature.

m11 embodiment (see Fig. 14) Fig. 14 t The eleventh embodiment shown in Fig.
1 is passed through the center of the container (+) and taken out to the outside, and the water pipe (
This is an example in which rectangular heat absorbing plates Q4 are provided in multiple stages alternately from both the inner wall of the container (1) and the inner wall of the container (1). In this example, water enters through the water inlet (8) in the bottom plate (7), passes through the water pipe (1), is preheated, then passes through the water channel (4) in the container (1) and is discharged from the water outlet (9). The radiant heat and convection heat of the electric heating element (5) is efficiently absorbed by the inner wall (2) and the water pipe (24), which extends from the water pipe (24).
No and inside! ! ! ! +2) is heated by thermal conduction to efficiently heat the water passing through it.

Twelfth Embodiment (See Figures 15.16) The twelfth embodiment shown in Figures 15.16 is an embodiment of the invention as claimed in claim 12, in which the inner wall (2) and the outer wall (
A water pipe (l'4) connected in series to the water channel between the water pipe and the container (1) is arranged linearly at the center inside the container (1), and
1), between the inner wall (2) and the inner wall (2) is a 6-wire heat absorbing plate (c) made of copper with good thermal conductivity? Many of them were constructed. Moreover, in this embodiment, two containers (1) are connected, and the water outlet (9) of one container (1) is connected to the water inlet (8) of another container (2), so that the two containers (+1), +1 ) is used to increase the speed of heating and hot water supply. In this example, the radiant heat and convection heat of the electric heating element (5) is directly transmitted to the container (
While heating the inner wall (2) of 1) and the water pipe (+1),
This is an example in which the heat absorption plate (goods) inside the container is also heated and heat is supplied to the water pipe (1) and the inner wall (2) by heat conduction to improve thermal efficiency.The inner wall of the container (1) in this example (2) and water pipe (
l'4 is made of copper, and the outer wall (3) is made of aluminum. In the figure, (c) is the communication pipe, (2) is the casing, and (c) is the barrel to make it portable.

(Effects of the Invention) As described above, according to the present invention, an electric heating element is enclosed in a sealed container, and the inner wall of the container is heated to a high temperature of 100"C or more by the radiant heat of the electric heating element and the heated air inside the container. Heat,
By flowing water through the narrow gap channel between the inner and outer walls of this heated container, the water is spread into a thin cylindrical shape, increasing the heat exchange area, and quickly transferring the heat from the heated inner wall to the water. , which can rapidly raise the temperature of water.

Moreover, the electric heating element is enclosed in a sealed container, and the water channel between the inner and outer walls of the container serves to absorb heat and prevent heat from dissipating to the outside, allowing efficient electrical generation. The body's energy can be used to heat water.

Furthermore, it is safe because it is compact and reduces heat dissipation without combustion, and it has the advantage of being able to be installed freely near bathtubs and kitchens where hot water is needed.

Since it is small and portable, you can easily make hot water outdoors as long as you have water and a power source, and it can also be easily used for outdoor work and camping.

In addition, the thermal efficiency can be further improved by passing a water pipe connected to the water channel of the container through the inside of the container, or by providing a heat absorption plate or a heat storage plate.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the first embodiment, Fig. 2 is a longitudinal sectional view thereof, Fig. m3 is a transverse sectional view thereof, Fig. tM4 is a longitudinal sectional view showing the second embodiment, and Fig. 5 is a longitudinal sectional view thereof. FIG. 6 is a vertical cross-sectional view showing the fourth embodiment; FIG. 7 is a vertical cross-sectional view showing the fifth embodiment; FIG. 8 is a vertical cross-sectional view showing the sixth embodiment. Fig. 9 is a partially cutaway perspective view showing the seventh embodiment, Fig. 10 is a diagram showing the development of the inner wall of the container, Fig. 11 is an explanatory diagram showing the eighth embodiment, and Fig. 11 is an explanatory diagram showing the eighth embodiment.
2 is a longitudinal cross-sectional view showing the ninth embodiment, FIG. 13 is a partially cutaway perspective view showing the first O embodiment, FIG. 14 is a longitudinal cross-sectional view showing the eleventh embodiment, and FIG. 15 is a twelfth embodiment. A vertical cross-sectional view showing an example, the 161st threshold is a perspective view of the same example. (1): Contents (2): Inner wall (3): Outer wall (4): Water channel (5): Electric heating element (6) - Top plate (7): Bottom
Board (8): Water inlet (9): Water outlet
θden: Pressure release valve (II): Large material layer (1'
4: Water pipe (11: Heat storage plate (+4: Metal rod (
11: Metal impeller (1): Part I/l Wall (1) Crab suction pump (1 Enoki/吃: Hose (21: TIF air heater C1): Hole ((Foundation), (Foundation), C4, (
Pier 2: Heat absorption plate -: Communication pipe (+'l): Trigram patent applicant Hiroshima
Yasuyo Osamu Ministry of Toshima Part 4 Figure 1 Figure 3 Figure 6 Figure II 1 Figure 9 Figure 7 Figure 13 Figure 15 Procedural amendment (voluntary) 1. Indication of the case 1988 Patent Application No. 24473 2. Name of the invention: Electric instant water heater

Claims (1)

[Scope of Claims] 1) An electric heating element is enclosed within a sealed container in which a cylindrical waterway with a narrow gap is formed between an inner wall and an outer wall made of a material with good thermal conductivity, separated from the inner wall by a required distance, and an electric heating element is enclosed in the inner wall. An inlet and a water outlet are provided in the waterway between the waterway and the outer wall, and the inner wall is heated by radiant heat from the electric heating element and air convection heat. An electric instantaneous water heater characterized by heating. 2) The electric instant water heater according to claim 1, wherein the outer wall of the container is heat-insulated. 3) The electric instantaneous water heater according to claim 1, wherein a water pipe connected in series with a water channel between the inner wall and the outer wall is disposed inside the container. 4) The electric instant water heater according to claim 1, wherein a heat storage plate is enclosed inside the container. 5) The electric instantaneous water heater according to claim 1, wherein a spiral partition wall is provided in the water channel between the inner wall and the outer wall of the container, so that the water flow in the water channel flows in a spiral shape. 6) The bathtub water heater according to claim 1, wherein the waterway of the container is communicated with the bathtub by a hose, and a suction pump is provided in the middle of the hose. 7) The electric instantaneous water heater according to claim 1, further comprising another electric heater provided inside the waterway formed between the inner and outer walls of the container. 8) The electric instantaneous water heater according to claim 1, further comprising a plurality of heat absorbing plates having a large area and extending horizontally from the inner wall of the container, each having a hole through which the electric heating element passes. 9) The electric instant water heater according to claim 3, wherein the water pipes connected in series are U-shaped. 10) The electric instantaneous water heater according to claim 3, wherein the water pipes connected in series are bent in a serpentine shape. 11) The electric instantaneous water heater according to claim 3, wherein a plurality of heat absorbing plates made of a material with good thermal conductivity are alternately provided horizontally protruding from each of the water pipes and the inner wall of the container which are connected in series. 12) The electric instantaneous water heater according to claim 3, wherein a large number of heat-absorbing vertical plates are installed radially in multiple stages between the series-connected water pipes and the inner wall of the container.