JPS63194106A - Steam generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

2. Description of the Related Art In general, this type of steam generator that evaporates water to generate steam includes a can body 23 and a steam outlet 27 provided at the top of the can body 23, as shown in FIGS. And this can body 2
3, a substantially U-shaped steam rising plate 24 is provided between the bottom surface and the side surface thereof with an appropriate gap, and by heating with the burner 22, the steam rising plate 24 is provided on the outside of the can body 23. Due to heat transfer from the heat absorbing fish 25, the can body 23 and the steam rising plate 2
4 is heated, steam bubbles 35 are guided to the upper part of the can body 23 together with the water 34, and the steam is taken out from the steam outlet 27.

Since the two-phase flow 36 of steam bubbles 35 and water 34 rises and flows through the gap between the steam rising plate 24 and the can body 23, the can body 23 is always heated by the burner 22 even when the internal water level decreases. It was designed to prevent the inner wall from getting wet and reduce its thermal conductivity.

By continuing this state, the water 34 in the can body 23 will decrease as steam is led out to the outside, but the water 34 in the can body 23 will decrease.
Upper water level sensor 2B and lower water level sensor 29 provided in 3
Therefore, the water level was always kept within the range where both water level sensors were located. In addition, since steam is generated continuously, water is replenished from the water supply port 26, but the evaporation residues (calcium, magnesium, silica, etc.) contained in the water are concentrated and the inner wall of the can body 23 and the steam It adheres and accumulates as scale on the wall surface of the ascending plate 24. Therefore, in order to prevent the adhesion and accumulation of scale, a configuration was used in which calsulam, magnesium, and the like are removed from the replenished water by a water softener 23 or the like in a water supply channel 37 connected to the water supply port 26.

Problems to be Solved by the Invention However, with the above configuration, it is necessary to regenerate the ion exchange resin used in the water softener 23 with saline solution due to its decreased function, and to replace the ion exchange resin due to its deterioration. This has had the problem of imposing financial and labor burdens on some users of sauna devices that use steam generators.

The present invention solves these conventional problems, and aims to prevent scale adhesion using a simple device without installing an expensive and complicated device such as a water softener.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a can body having a steam outlet and a water inlet, a heating source for heating the can body to boil water inside the can body, and a can body having a steam outlet and a water inlet. When placed in the body, a large number of solids are scattered and moved within the can body by the water.

According to the present invention, when the water inside the can boils, a large number of solids placed in the can are scattered and moved together with the boiling hot water, and at this time, a large number of solids are scattered among themselves and on the wall of the can. Due to collision and scraping, attached scale can be removed and flaked scale IV can be crushed.

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

1 to 4, a burner 1 serving as heating means is disposed below a can body 2 with a certain combustion space in between. A large number of heat-absorbing fins 4 that absorb heat from the burner 1 are welded to the outer peripheral surface of the can body 2 . An inner cylinder 3 is fixed within the can body 2 with a certain gap provided therebetween. This inner cylinder 3 has an air/water descending hole 5 in the longitudinal direction of the upper part and a longitudinal direction n of the lower part.
K is provided with a plurality of water level holes 6 each for making the water level in the can body 2 and the water level in the inner cylinder 3 the same. Further, both sides of the can body 2 are closed together with the inner cylinder 3 by side lids 11.12. A water supply lower communicating with the lowest part of the can body 2 is partially opened in the side lid 12 facing the inner cylinder 3, and a filter 13 for preventing small solids 17 from flowing out is provided on the water supply lower.

The other side cover 11 is provided with a steam outlet 8 which is in the upper part of the inner cylinder 3 and communicates with the space above the water surface.
A water level sensor 9 for detecting a high level and a sewage level sensor 1o for detecting a low level are provided facing inside. Furthermore, inside the can body 2, there is a substance that has a higher specific gravity than the above-mentioned water, is insoluble in water or hot water, and is sufficiently scattered by boiling water.
A number of solid objects 17 of movable weight are contained. The solid 17 consists of several angular powder bodies.

In the above configuration, the heat-absorbing fins 4 are heated by the a-firing of the burner 1, and the water 1B and 18' in the can body 2 boils by absorbing heat and generates steam bubbles 21. At this time, the steam bubbles 21, the hot water inside the can body 2 which is rippled by heating, and the large number of solids 17 put into the can body 2 rise through the gap between the can body 2 and the inner cylinder 3, and the upper part of this gap rises. In the space of 19
After that, it descends into the inner cylinder 3 through the air/water descending hole 5.

In this process, the water and the solid 17 fall directly onto the water surface inside the inner cylinder 3. Further, some of the solids 17 return downward through the gap between the can body 2 and the inner cylinder 3 because their specific gravity is higher than that of water.

The water and solids 17 that have fallen into the inner cylinder 3 are supplied to the lower part of the can body 2 through the same water level hole 6 provided at the lower part of the inner cylinder 3, and the cycle is repeated. In this way, a large number of solids 17 placed in the can body 2 are scattered and moved within the can body 2 by the boiling power of water. At this time, as shown in Fig. 4, the solid 17 collides with the inner surface of the can body 2 and the outer surface of the inner cylinder 3, and removes the attached scale while rubbing, and crushes the peeled off scale with the solid 17 colliding with each other. do. Since the solid 17 has corners, attached scale can be easily removed and it can be easily crushed. On the other hand, steam 20 from which water and solids have been separated is taken out from the steam outlet 8 and sent out of the vessel. By continuing to use the steam generator, the water in the can body 2 will be concentrated and the evaporation residue (scale component) will become more concentrated. The drain valves 15 of the water supply channel 7a and the drain channel 7b are opened, and the water in the can body 2 is discharged to the outside of the can body through the water supply lower, the water supply channel 7a, and the drain channel 7b. At this time, the scale components are also discharged together with the water, so that they are not deposited inside the can body 2.

Note that the burner may use gas, oil, coal, wood, or the like as fuel. Further, the heating source may be an electric heater. Further, in the embodiment, a powder body with several corners is used as the shape of the solid 17, but a rounded powder body without corners may be used.

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

(1) Many solids that do not dissolve in the water and hot water placed inside the can are scattered and moved inside the can by the force of boiling water, and at this time collisions occur with the can and solids collide with each other. Prevents scale from adhering to the surface.

(2) Compared to conventional water treatment equipment such as water softeners and water purifiers, it has a simple structure in which a large number of small solids are placed in a can body, so it is low cost.

(3) Furthermore, there is no need for regeneration or replacement work required for conventional water softeners, and there is no labor burden on the user.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a steam generator showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A--A in FIG. 1, showing a state where the steam generator is not heated by a burner. FIG. 3 is a cross-sectional view taken along line A-A in FIG. 1 showing the state heated by the burner;
FIG. 4 is a diagram showing the movement of a large number of solid objects contained in a can. FIG. 5 is a longitudinal cross-sectional view of the conventional example, and FIG. 6 is a cross-sectional view taken along the line B--B in FIG. 5, showing a state where it is heated by a burner. 1... Heat source, 2... Can body, 17...
····solid. Agent name: Patent attorney Toshio Nakao and 1 other person Z-
G, $ 6 - All water, standing, large (3 - Inner cylinder 7 - Door water outlet 4 - Suction adjustment valve ε - Steam extractor Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A steam generator comprising a can body having a steam outlet and a water inlet, a heating source that heats the can body to boil water inside the can body, and a large number of solids placed in the can body and scattered and moved inside the can body by the boiling water. Device.