JPH01163503A - Steam generator - Google Patents

Abstract

PURPOSE: To prevent the adhesion of scales to the internal surface of a can body and surfaces of water level sensors with a simple device, by providing the can body having a steam outlet and a water inlet, a heating source which boils and evaporates the water in the can body by heating the can body, and brushes which are provided in the can body for rubbing off the scales from the internal surface of the can body and the surfaces of water level sensors. CONSTITUTION: The steam 9 generated in a can body 2 is taken out from the steam outlet 5 of the can body 2 and sent to the outside of a steam generator. When the steam generator is continuously used, the water 8 in the can body 2 is condensed and scale components are deposited, condensed, and adhere to the internal surface of the can body 2 and the surfaces of water level sensors 6 and 7, but do not remain longer on the surfaces, because brushes 10 and 15 always rub off the scales. When the steam generator is stopped, a drain valve 13 connected to a water supply pipe 14 is simultaneously opened and the water 8 in the can body 2 is discharged to the outside through the water inlet 4, water supply pipe 14, and drain valve 13. Since the scales rubbed off by means of the brushes 10 and 15 are discharged together with the water 8, the scales do not adhere to the internal surface of the can body 2 nor deposit in the can body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a steam generator that fills a bathroom or the like with steam, heats the air in the bathroom, and generates the steam for use in a sauna or the like.

2. Description of the Related Art In general, this type of steam generator that generates steam by boiling water has a can body 17 and a steam outlet installed in the upper space of the can body 17, as shown in FIGS. 3 and 4. 20 and a water supply port 19 located below the can body 17 and provided with a water supply port 19,
A large number of fins 18 welded to the outer surface of the burner 16
absorbs the combustion heat of 2...-.

The water 25 inside the can body 17 is heated and evaporated to form steam 26.
It is configured to generate steam 26 and take out steam 26 from the steam outlet 20.

By continuing this state, the water 25 in the can body 17 decreases, but the upper water level sensor 21 and the upper water level sensor 22 provided in the can body 17 output signals to control the water supply valve. The water level is always kept within the range where both water level sensors are located.

The steam 26 is continuously generated from the water supply port 19.
As more water is replenished, scale components (calculum, magnesium, silica, etc.) contained in the water precipitate and become concentrated, adhering to the inner wall of the can and the surface of the water level sensor. Figure 5.

It is shown in FIG. 29 is a scale attached to the water level sensor, and 30 is a scale attached to the inner wall of the can.

Therefore, in order to prevent the adhesion of scale, a configuration is used in which the replenished water is connected to a water supply pipe 23, and calcium, magnesium, etc. are removed by a water softener 24 or the like.

The problem that the invention seeks to solve 3...-.

However, with the above configuration, it is necessary to regenerate the ion exchange resin used in the water softener 24 with saline water due to its decreased functionality, and to replace the ion exchange resin due to its deterioration. This article addresses the problem of imposing financial and labor burdens on general users of sauna equipment.

The present invention has been made to solve these conventional problems, and aims to prevent scale adhesion using a simple device without providing an expensive and complicated device such as a water softener.

The present invention solves the above-mentioned problems by providing a can body having a steam outlet and a water inlet, and heating the can body to boil and evaporate the water inside the can body. The water level sensor is equipped with a brush that is provided inside the can body and scrubs the inner wall of the can body and the surface of the water level sensor.

Operation According to the above-described structure, the brush inside the can can rub the inside wall of the can and the surface of the water level sensor to prevent scale from adhering, and also to remove the scale that has adhered.

Example Embodiments of the present invention will be described below based on the accompanying drawings.

In FIGS. 1 and 2, a burner 1 serving as heating means is disposed below a can body 2 with a certain combustion space in between. Inside the can body 2, there are provided a steam outlet 5 in the upper space, a water inlet 4 in the lower water, a high water level sensor 6 for detecting a high level, and a high water level sensor 7 for detecting a low level. The upper and lower water level sensors 6.7 then send signals to the water supply valve (not shown) to set the water level within the range of the water level sensors 6.7.

The periphery of the can body 2 is closed, and a number of fins for absorbing the combustion heat of the burner 1 are attached to the outer peripheral surface of the can body 2 . Further, inside the can body 2, there are provided a brush 10 and a water level sensor brush 15 supported on both sides of the can body 2, and the shaft 31 of the brush 10 is sealed with a sealing material 12. The brush 1o and the water level sensor brush 15 are rotatable and rotated by a motor 11.

5＼-7 In the above configuration, due to the combustion of the burner 1, the fin 3
As the water absorbs the combustion heat, the water 8 inside the can body 2 is heated and boils, producing steam 9.

The generated steam 9 is taken out from the steam outlet 5 and sent out of the vessel. By continuing to use this steam generator, the water 8 in the can body 2 becomes concentrated and scale components precipitate, and the water 8 in the can body 2 becomes thicker and becomes thicker, and the water 8 in the can body 2 becomes thicker and becomes thicker. However, the rotating brushes 10 and 15 constantly scrub it away, so that no adhesion occurs. Furthermore, at the same time as the steam generator is stopped, the fco drain valve 13 connected to the water supply pipe 14 is opened, and the water 8 inside the can body is discharged to the outside of the can body 2 through the water supply port 4, the water supply pipe 14, and the drain valve 13. . At this time, the scales scrubbed off by the brushes 10 and 15 are also discharged together with the water 8, so that no scale is deposited inside the can body 2.

Note that the burner may use gas, oil, coal, wood, etc. as fuel. The heating source may be an electric heater.

Furthermore, in the embodiment, a rotating brush is used to perform 1 Kogazuri 6.
・-/ You may move it. The rotation of the brush can also be controlled using a reduction gear. It may be rotated manually each time.

Effects of the Invention As described above, according to the present invention, the following effects can be expected.

(1) Since the brush provided inside the can rubs the inside wall of the can and the surface of the water level sensor, adhesion of scale can be prevented.

(2) Since scale does not adhere to the inside wall of the can and the surface of the water level sensor, stable, thermally efficient and accurate water level detection can be achieved.

(3) Compared to conventional water treatment equipment such as water softeners and water purifiers, it has a simple structure and is therefore low cost.

(4) Furthermore, there is no need for regeneration work or replacement work for ion exchange resins required for water softeners, etc., and there is no labor or economic burden on the user.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a steam generator according to an embodiment of the present invention, showing a state in which the steam generator is not in use. 7 8-7 FIG. 2 is a sectional view taken along the line A-A in FIG. 1 and shows the state of use, and D shows the rotation of the brush, and the broken line arrow shows the drainage path. FIG. 3 is a longitudinal sectional view of the conventional example, and FIG. 4 is a sectional view taken along line BB in FIG. FIGS. 5 and 6 are cross-sectional views showing the water level sensor and the state of scale adhesion to the inner wall of the can in a conventional example in which a water softener or the like is not used. 1...burner, 2...can body, 4...
...Water inlet, 5...Steam outlet, 10...
...Brush, 15...Water level sensor brush. Name of agent: Patent attorney Toshio Nakao
Burner 2 - Can Body 5 - Air outlet 6 - Top water level detector 7 - Lower end °C chamber lO - Brush Fig. 2 Fig. 3 Fig. 4

Claims (1)

[Claims] A can body having a steam outlet and a water supply port, a heating source that heats the can body to boil and evaporate water inside the can body, and a brush provided inside the can body to scrub the inner wall of the can body and the surface of the water level sensor. Steam generator.