JPS587143B2 - Jyoukifrogama - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is configured such that a steam blowing pipe led out from a steam generation chamber is opened at or near the bottom of the bathtub, and the bath is heated by the steam blown into the water. Regarding steam bath kettles.

This steam bath kettle boils the bath by blowing steam into the water, so compared to conventional bath kettles that naturally circulate hot water between the bathtub and a heat exchanger, the pipes connecting the kettle and the bathtub are A book will do.

■Since steam can be blown near the bottom of the bathtub, the upper and lower parts of the bath are heated evenly.

■Since changes in the state of water (steam) are used, the moving force of the heat medium is greater than in the case of natural circulation of hot water, and the moving route can be set freely, so there are fewer restrictions on the relative position of the pot and bathtub. .

Although it has excellent advantages such as, it has the following practical problems.

In other words, ■For safety reasons, steam generators are usually equipped with a pressure switch that controls combustion in the burner when the pressure (temperature) reaches a certain level, but if this pressure switch malfunctions, There is a possibility that the pressure inside the steam generation chamber becomes higher than the permissible pressure from a safety perspective due to some reason, such as when the steam is generated. However, because it is high-temperature steam, it cannot be spouted directly into the bathroom or near the kettle, and the selection of the point where it will flow becomes a very important issue.

In particular, when housing units are in close proximity to each other, such as in an apartment complex, it is extremely difficult to appropriately select a steam release point.

■In order to blow steam into the bathtub, it is necessary to make the steam pressure in the steam generation chamber higher than the head pressure of the bathtub water depth, and to replenish water by the amount of water lost by blowing the steam.

However, in order to solve these problems related to steam bath pots, conventionally, as described in Japanese Patent Publication No. 36-18037, a steam generating chamber having an expanding water release pipe extending upward and a steam generating chamber located above the steam generating chamber has been proposed. A water supply pipe is connected between the water supply chamber that supplies water to the steam generation chamber, and one end of this water supply pipe on the steam generation chamber side is opened and closed using a ball tap, and when the steam pressure in the steam generation chamber increases, this steam There is a method in which the liquid in the room is forced out to the expansion water release pipe using pressure, the liquid level is pushed down, and the float part of the ball tap is lowered to open the water supply pipe, and steam is released from the water supply pipe.

However, this method uses a mechanical ball tap to release steam, so it lacks safe operation, and the liquid level in the steam generation chamber constantly moves due to boiling bubbles, which causes the float part of the ball tap to constantly move, causing the pole tap to It had the disadvantage of being prone to breakdowns due to wear and the like.

In view of this point, the present invention aims to eliminate the above-mentioned drawbacks.

An embodiment of the present invention will be described based on the drawings. As shown in FIG. 1, a steam generation chamber 2 heated by a burner 1
In a steam bath kettle, a steam blowing pipe 3 led out from the bathtub 4 is opened near the bottom of the bathtub 4, and the steam is blown into the water to boil the bath. A cistern 5 with a ball tap 5a for supplying water to the steam generation chamber 2 is provided, and an automatic water replenishment mechanism 6 for controlling the liquid level in the steam generation chamber 2 is provided in the water supply system between the steam generation chamber 2 and the cistern 5. At the same time, the inverted U-shaped steam relief pipe 7 led out from the steam generation chamber 2 is
The bent part of the letter prevents the water in the cistern 5 from flowing backwards.
It is located slightly higher than the constant water level B-B of the cistern 5 and is connected to the water supply system section a upstream of the automatic water replenishment mechanism 6.

The automatic water replenishment mechanism 6 includes a float chamber 6a, a float 6b, and a float 6b that communicate with the steam generation chamber 2 at two upper and lower locations.
It is composed of a water replenishment valve 60 and the like that are opened and closed by.

Note that 6a+6b and 6c are collectively referred to as float type valve devices 6a, 6b, and 6c.

17 is a hot water supply device built into the steam bath pot, which includes a hot water supply pipe 8 having a hot water outlet pipe 8a and a water supply pipe 8b, and a steam pipe 9a.
The hot water supply heater 9 is connected to the steam generation chamber 2 via a water return pipe 9b, and the like.

1 and 2 are steam valves provided in the steam blowing pipe 3 and the steam pipe 9a, respectively; 5b is a water supply pipe to the cistern 5; and 5c is an overflow pipe.

Next, the effects of the above embodiment will be explained.

(I) When stopped, before the burner 1 starts combustion, the liquid level in the steam generation chamber 2 and the liquid level in the float chamber 6a are maintained at the same level A-A, and the liquid level in the inverted U-shaped steam relief pipe 7 is maintained at the same level A-A. The surface and the liquid level of the cistern 5 are maintained at the same level B-H.

(I) When boiling a bath, when burner 1 is ignited and steam valve ■1 is opened, the water in steam generation chamber 2 is heated, and as steam begins to be generated, the steam pressure increases, and the inverted U-shaped steam relief Push down the liquid level in the tube 7 by an appropriate distance.

When the steam pressure becomes equal to or higher than the water head pressure between the water surface DD of the bathtub 4 and the steam blowing pipe 3, steam is blown into the water in the bathtub 4 and heats the water in the bathtub 4.

The liquid level in the inverted U-shaped steam relief pipe 7 is equal to the water head pressure between the water surface DD of the bathtub 4 and the steam blowing pipe 3, plus the resistance of the steam blowing pipe 3, the steam valve V1, etc. Worthwhile level E-E
, and is held at this level E-E unless the water surface D-D in the bathtub 4 fluctuates.

When steam is blown into the bathtub 4, the amount of water in the steam generation chamber 2 is reduced by that water, and the liquid level is lowered, but at the same time, the float 6b is also lowered, so the water replenishment valve 6c is opened and the water inside the steam generation chamber 2 is lowered. water is automatically replenished.

When water is replenished and the liquid level rises, the float 6b also rises, and the water replenishment valve 6c presses against the valve seat to stop water supply and keep the liquid level in the steam generation chamber 2 constant.

When the steam valve V1 is closed, the pressure in the steam generation chamber 2 increases, and when it reaches a set pressure, a pressure switch (not shown) senses this and cuts off the supply of fuel gas to the burner 1.

If the fuel supply is delayed or not shut off due to some reason such as a malfunction, the pressure inside the steam generation chamber 2 will further increase, but this pressure will rise to the water seal height (B) of the inverted U-shaped steam relief pipe 7. -B, F-F water head), the high temperature steam breaks the water seal and escapes to the water supply system section a, ensuring safety.

Incidentally, since the depth of the bathtub 4 is usually about 0.64 m, a water seal height (water head between B-B and F-F) of about 1 m is sufficient.

Further, the liquid level A-A in the steam generation chamber 2 is set to be higher than the level C-C at the edge of the bathtub 4.

(1) When supplying hot water, close the steam valve V1, open the steam valve V2, send the steam to the hot water supply heater 9, and return the condensed water to the liquid part in the steam generation chamber 2 via the return pipe 9b.

The generated steam pressure fluctuates depending on the magnitude of the hot water heating load, and when the inside of the hot water tank 8 reaches a predetermined hot water temperature, the pressure switch is activated to stop combustion in the burner 1, similar to when boiling a bath. let

When the pressure inside the steam generation chamber 2 becomes abnormally high, the water seal is broken and high-temperature steam escapes into the water supply system part a, as in the case described above, to ensure safety.

Figure 2 A shows an example in which the mouth is configured as an external type, 10 is an exhaust pipe, 11 is a casing, 12a is an air supply louver, 12b is an exhaust louver, 13 is a windbreak plate, and 14 is a silencer. be.

FIG. 3A shows an embodiment in which the opening is configured to be installed in a bathroom, and 15 is a storage compartment.

4 and 5 each show an embodiment in which a heating function is added. FIG. open to
The cistern 5 is constructed to heat the water in the cistern 5 by blowing steam into the water, and the cistern 5 is provided with a heating hot water outlet pipe 16a and a heating hot water return pipe 16b.

P is a pump for forced circulation of hot water for heating.

The other configurations are similar to those of the previous embodiment.

FIG. 5 shows that a heating hot water heating coil 7' branched from an inverted U-shaped steam release pipe 7 is inserted into a cistern 5, and
The structure is such that condensed water is collected in the steam generation chamber 2 through a return pipe 7a'', and the other structure is the same as that in FIG. 4.

In summary, in the steam bath pot according to the present invention, the steam blowing pipe 3 led out from the steam generating chamber 2 is opened at or near the bottom of the bathtub 4, and the steam bath is blown into the water to provide a bath. In a steam bath kettle configured to boil water, a cistern 5 for supplying water to the steam generating chamber 2 is provided above the steam generating chamber 2, and a water supply system between the steam generating chamber 2 and the cistern 5 is provided. , a float type valve device 6a that is opened and closed according to changes in the liquid level in order to keep the liquid level in the steam generation chamber 2 substantially constant;
In addition to providing an automatic water replenishment mechanism 6 equipped with 6b and 6c,
An inverted U-shaped steam relief pipe 7 is provided between the water supply system part a on the upstream side of the automatic water refilling mechanism 6 and the steam generation chamber 2, and the U-shaped bent part thereof is higher than the constant water level of the cistern 5. When the steam pressure in the steam generation chamber 2 exceeds the set pressure,
This system is characterized in that it is configured to release this high-pressure steam to the water supply system section a.

Its effects include the following advantages.

In other words, when replenishing the amount of water in the steam generation chamber due to the blowing of steam into the bathtub, the cistern head is used without using mechanical power such as a pump, and the water supply system from the cistern to the steam generation chamber is changed. The part of the water supply system upstream of the automatic water replenishment mechanism is also used as a relief point for high-temperature steam, which prevents the high-temperature steam from directly spewing out into the atmosphere and provides a dedicated system for guiding the high-temperature steam to a safe location outdoors. No piping is required, and the structure is economical and easy to install, ensuring safety as a steam bath pot.

Moreover, in spite of this, the high-temperature steam is released by an inverted U-shaped steam relief pipe having a U-shaped bent portion at a position higher than the constant water level of the cistern that seals the high-temperature steam. Unlike when using mechanical force such as a ball tap to release high-temperature steam, there is no malfunction, and there is no mechanical failure due to wear, etc., and the high-temperature steam can be released reliably, improving safety. I can figure it out.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the steam bath pot according to the present invention,
Fig. 1 is a schematic cross-sectional view, Fig. 2 A and Fig. 5 show other embodiments, and Fig. 2 A and Fig. 5 are a schematic longitudinal sectional front view and a schematic vertical sectional side view showing the case where the opening is configured as an external type. , FIG. 3A is a perspective view and a schematic longitudinal sectional front view showing the case where the opening is configured to be installed in a bathroom, and FIGS. 4 and 5 are schematic longitudinal sectional front views showing the case where a heating function is added. 2... Steam generation room, 3... Steam blowing pipe, 4... Bathtub, 5... Cistern,
6... Automatic water replenishment mechanism, 6a, 6b, 6c...
...Float type valve device, 7...Steam relief pipe,
a... Water supply system part.

Claims (1)

[Claims] 1. Connect the steam blowing pipe 3 led out from the steam generation chamber 2 to the bathtub 4.
In a steam bath kettle configured to boil a bath by steam blown into water through an opening at or near the bottom of the bath, a steam generating chamber 2 is provided above the steam generating chamber 2.
A cistern 5 is provided to supply water to the steam generation chamber 2.
The water supply system between the steam generating chamber 2 and the cistern 5 is provided with float type valve devices 6a, 6b, and 6c that are opened and closed according to changes in the liquid level in order to keep the liquid level in the steam generation chamber 2 substantially constant. An automatic water replenishment mechanism 6 is provided, and a water supply system portion a upstream of the automatic water replenishment mechanism 6 and the steam generation chamber 2 are provided.
An inverted U-shaped steam relief pipe 7 whose U-shaped bent portion is higher than the constant water level of the cistern 5 is installed between the A steam bath kettle characterized in that it is configured to release high-pressure steam to a water supply system part a.