JPH0237775B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a bathtub in which air bubbles can be mixed.

(Background Art) It is known that mixing air bubbles into a bathtub has the effect of cleaning the body surface and promoting blood circulation compared to normal bathing.

Figures 1 and 2 show conventional examples of bathtubs equipped with this type of bubble generation mechanism, and the one shown in Figure 1 is
Hot water in the bathtub 1 is circulated through the pump 2 and filter 3 into the bathtub 1.The hot water discharged from the pump 2 entrains the air 5 sent through the valve 4 and flows through the jet nozzle 14 into the bathtub 1. The one shown in FIG. 2 is one that ventilates air from an air pump 7 through a porous plate 6 provided at the bottom of the bathtub 1 to generate bubbles. It is.

However, in such conventional methods, the diameter of the bubbles is 1 mm or more, causing a flow in the hot water in the bathtub.
The perceived temperature increases while taking a bath. Therefore, even if the amount of bubbles was controlled, the perceived temperature could only be changed by more than the water temperature, and could not be changed by less than the water temperature.

(Object of the Invention) The present invention was made in view of the above-mentioned drawbacks, and its purpose is to provide a bathtub in which the sensible temperature can be adjusted up or down centering on the water temperature without changing the temperature of the water in the bath. It is on offer.

(Disclosure of the Invention) The present invention is capable of supplying microbubbles and normal bubbles to the bathtub by switching between them, thereby making it possible to adjust the sensible temperature range from the water temperature of 0 to the positive side and the negative side. Features.

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

FIG. 3 shows an embodiment of the present invention, in which a porous plate 6 is used as the positive side of the sensible temperature adjustment range, and air is dissolved in water under pressure and precipitated through a nozzle 8 under reduced pressure as the negative side. This is a combination of a micro bubble generator and a micro bubble generator. In the figure, 9 is a pressurized tank, and 10 is an electromagnetic valve. Structures that are equivalent to those of the conventional example shown in FIG.

By the way, even if microbubbles (bubble diameter 10 to 20μm) are discharged into the bathtub 1, the hot water does not flow due to their small diameter, and the microbubbles stagnate in a manner that envelops the body. , the amount of heat transferred from the hot water to the body is reduced by about 20%. Therefore, the sensible temperature is about 2°C lower than the water temperature. On the other hand, the bubbles (bubble diameter of 1 mm or more) from the porous plate 6 rise at a high rate, so that the hot water flows and the sensible temperature becomes about 3° C. higher than the hot water temperature.

Therefore, by changing the amount of microbubbles and the amount of normal bubbles (ventilated by the porous plate 6), it is possible to adjust the perceived temperature up or down around the bathwater temperature without changing the bathwater temperature. can.

FIG. 4 and FIG. 5 each show different embodiments of the present invention, in which the positive side of the sensible temperature adjustment range is based on the discharge of aerated water, and the negative side is based on the microbubble generator. It is a combination. In the same figure, reference numerals 10, 11, 12, and 13 are electromagnetic valves, and the same reference numerals are given to the same components as in the above embodiment, and the explanation of the components will be omitted.

In the above example, there are two types of bubbles: fine bubbles and normal bubbles.
A solenoid valve 1 discharges various types of bubbles into the bathtub 1.
This is done by switching the open/close states of 0, 11, 12, and 13 as follows. That is, in the case of microbubbles, valves 10 and 13 are open and valves 11 and 13 are open.
12 is closed, and in the case of normal bubbles (air mixture), valves 10 and 13 are closed and valves 11 and 12 are open. By switching in this manner, the sensible temperature can be adjusted up or down in the same way as in the embodiment described above.

(Effects of the Invention) As described above, the present invention enables supply of fine bubbles (bubble diameter 10 to 20 μm) and normal bubbles (bubble diameter 1 mm or more) to the bathtub by switching between them.
You can adjust the perceived temperature without changing the temperature of the water while bathing.
It became possible to adjust the temperature of the water up and down.

[Brief explanation of drawings]

1 and 2 are simplified diagrams each showing a conventional example, and FIGS. 3 to 5 are simplified diagrams each showing an embodiment of the present invention. 1... Bathtub.

Claims (1)

[Claims] 1 Micro bubbles with a bubble diameter of 10 to 20 μm generated by dissolving air in water under pressure and then reducing the pressure, and bubbles with a bubble diameter of 1
A bathtub characterized by being able to switch between supply of normal air bubbles of mm or more.