JPH0788970B2 - Forced circulation type bubble bath device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention uses a bath device to heat bath water by forced circulation and also has a bubble bath function.

[Prior Art] A conventional bathtub device called a natural circulation type is one in which a bathtub and a bathtub device are connected by two circulation pipes to heat bath water by natural convection. For this reason, the bath is slow to boil, and the bath water has high temperature in the upper part and low temperature in the lower part, and it is necessary that the water temperature after stirring well becomes a temperature suitable for bathing, which is very inconvenient to use. It is a thing.

In order to prevent this drawback, recently, a pump is attached to the circulation pipe to create a forced water flow, and this structure improves the temperature uniformity of the bath water and the boiling water effect.

[Problems to be Solved by the Invention] By the way, the price of accessories such as pumps and various pipes and control parts related to the pumps that compose the forced circulation heating system for bathtubs can be as an adapter even when they are installed in a bath hook device. Even if it is configured separately, it will be expensive, and it is expensive as a system only for obtaining forced water flow, which imposes a heavy burden on users and is difficult to spread to each household. .

[Means for Solving the Problem] The present invention is to enhance the added value by adding a bubble bath function to such a forced circulation system.
Is provided with a hot water connection port 8 and a cold water connection port 9, and the bathtub device 2 is provided with a hot water outlet port 6 and a cold water inlet port 5, and a cold water connection port 9, an inlet port 5, and an outlet port 6 are provided. 2 for hot water connection 8
In a bath device for heating bath water by connecting with circulation pipes 3 and 4 of the book, a pump 7 capable of switching between high speed operation and low speed operation is attached to the circulation pipe 3 between the cold water connection port 9 and the inflow port 5. In addition to creating a forced water flow toward the bath device 2 at the time of low-pressure output due to low-speed operation, the water jet nozzle 10 is attached to the center of the hot water connection port 8 from the circulation pipe 4 side into the bath 1 to attach the water. An air suction pipe 11 for taking in air is connected to the jet nozzle 10, a branch pipe 14 branched from the circulation pipe 3 on the discharge side of the pump 7 is connected to the water jet nozzle 10, and a bath pot is connected from the branch portion. An on-off valve 12 is attached to the circulation pipe 3 on the device 2 side, the on-off valve 12 is closed when high-pressure output is generated by the high-speed operation of the pump 7, and a control device for ejecting a water flow mixed with air from the water ejection nozzle 10 is provided. is there. Further, since the bath water is heated by the forced water flow as a concrete structure, it is not necessary to install the hot water connection port 8 and the cold water connection port 9 in two places, and the cold water connection port 9 is for hot water. It may be formed in a ring shape on the outer periphery of the connection port 8, and the pump 7 and the opening / closing valve 12 are not installed in the bath hook device 2, but are installed in the frame body 15 provided near the bathtub 1, It is also possible to use the conventional natural circulation type bath hook device 2. Further, the motor for driving the pump 7 may be driven by direct current, and a wide range of change in low speed and high speed can be obtained.

[Explanation of Action] Due to the above configuration, the open / close valve 12 is opened at the time of low pressure output when the pump 7 is operated at a low speed.
Is sent to the bath device 2 through the circulation pipe 3, and the high-temperature water is returned to the bathtub 1 through the circulation pipe 4. On the other hand, when the pump 7 is operated at high speed during bathing and the on-off valve 12 is closed, the entire amount of high-pressure output bath water is sent to the water jet nozzle 10 through the branch pipe 14, and the hot water connection port 8 has a central portion. Gush out into the bathtub 1. Since an air suction pipe 11 is connected to the water jet nozzle 10, a high-speed jet stream of air entrains air and forms fine water bubbles that are blown out into the bathtub 1, which is the same as when high-pressure air is sent. You can configure the vibra bus to.

[Example] 1 is a bathtub, 2 is a bath device, 8 is a hot water connection port provided on the wall of the bathtub 1, 9 is a cold water connection port provided on the wall of the bathtub 1,
When a natural circulation type is used as the bath device 2, the cold water connection port 9 is provided at a low position. 5 is an inlet for sending cold water to the bath device 2, 6 is an outlet for taking out hot water obtained in the bath device 2, 3 and 4 are circulation pipes for connecting the bath 1 and the bath device 2, Connection port 9 and inflow port 5
Is connected to the circulation pipe 3, and the outflow port 6 and the hot water connection port 8 are connected to each other by the circulation pipe 4.

Reference numeral 7 is a pump attached to the circulation pipe 3 between the cold water connection port 9 and the inflow port 5 and capable of switching between high speed operation and low speed operation. 10 is the center of the hot water connection port 8 from the circulation pipe 4 side to the inside of the bathtub 1. A water jet nozzle mounted so as to be visible to the user, 11 an air suction pipe connected to the water jet nozzle, and 14 a branch pipe branched from the circulation pipe 3 on the discharge side of the pump 7.
14 is connected to the water jet nozzle 10.

Reference numeral 12 is an opening / closing valve that opens and closes the flow path of the circulation pipe 3 on the side of the bath device 2 from the branch portion. The opening / closing valve 12 is controlled by the control device so as to be opened / closed in conjunction with the low speed / high speed operation of the pump 7. When the pump 7 operates at low speed, the on-off valve 12 opens to create a low-pressure output forced water flow from the bathtub 1 toward the bath device 2, and when the pump 7 operates at high speed, the on-off valve closes.
It is controlled to create a high-pressure forced water flow directly from the bath 1 toward the water jet nozzle.

By the way, the discharge pressure of the pump 7 changes depending on the number of rotations of the pump 7 and the ease with which water flows, and when the motor of the pump 7 operates at low speed, the amount of water is small and the flow of the bath hook device 2 and the circulation pipes 3 and 4 is small. When there is almost no road resistance, the pressure obtained by the pump 7 can be set to a low pressure output of about 0.15 kg / cm ² . For this reason, there is no particular problem even if the bath device 2 that uses a normal gas or petroleum as a heat source and does not have a pressure resistant structure is used as it is.

Therefore, an appropriate amount of water is put in the bathtub 1, the pump 7 is operated at a low speed, and the bathtub device 2 is fed with the bathtub water.
, The bath water heated by the bath kettle device 2 is returned from the outlet 6 to the bath 1 through the circulation pipe 4 and the hot water connection port 8 and is boiled by forced circulation by the pump 7.

Also, when the pump 7 is operated at high speed during bathing and the on-off valve 12 is closed, the discharge part of the pump 7 has a high pressure output of about 0.5 kg / cm ² or more, and the water flow does not flow to the bath device 2 and the branch pipe is directly connected. 14
And is sent to the water jet nozzle 10.

Reference numeral 13 is an air chamber provided in the nozzle portion of the water jet nozzle 10, and since the air chamber 13 and the air suction pipe 11 are communicated with each other, when a high-pressure output water flow passes through the nozzle portion of the water jet nozzle 10. The air in the air suction pipe 11 is sucked by being drawn in through the air chamber 13. Then, this air is blown into the bathtub 1 together with the jet water flow, and the bathtub 1 is filled with fine water bubbles.

The on-off valve 12 of the embodiment shown in the figure is composed of a three-way valve provided at a branch portion between the circulation pipe 3 and the branch pipe 14. However, when the circulation pipe 3 side is opened, the motor is operated as described above. Since the flow rate of the circulation pipes 3 and 4, the bath hook device 2 and the hot water connection port 8 is almost nonexistent, while the water flow rate of the water jet nozzle 10 is extremely large, the branch pipe is particularly large.
Even if you do not close the flow path on the 14 side, the water in the bathtub
There is almost no flow, and no difference in performance is observed. Therefore, the on-off valve 12 does not need to use a high-priced three-way valve as shown in the figure, but an inexpensive type that opens and closes only the flow path on the side of the circulation pipe 3 can be used sufficiently.

Further, the big difference between the time when the bath water is heated and the time when bubbles are generated during bathing is the operating speed of the pump 7. Then, when bubbles are generated, the pump 7 is switched to high-speed operation, but it is possible to change the rotation speed of the motor by changing the voltage supplied to the motor. It is preferable to use a DC motor whose rotation speed is not affected by the power supply frequency, rather than using an AC motor that cannot achieve high speed. Further, in the case of a DC motor, not only the supply voltage is changed, but also highly accurate rotation speed control by digital control can be performed.

When this invention product is attached to a new bathtub 1, it is not necessary to open two connection ports because the bath water is circulated by the forced water flow, and one connection port is opened to form the hot water connection port 8.
The water jet nozzle 10 may be attached to the center of the hot water connection port 8 and the ring-shaped cold water connection port 9 may be arranged on the outer periphery of the hot water connection port 8 to cleanly arrange the inside of the bathtub 1.

Further, in the case of the bathtub 1 combined with the existing natural circulation type bathtub device 2, the pump 7 and the opening / closing valve 12 may be mounted in a frame body 15 provided in the vicinity of the bathtub 1 to be integrated into one unit. Yes, this unit also has 10 water jet nozzles.
Also attach it to the hot water connection port 8 and pump 7
It is a preferred embodiment to make the suction side of the device look into the cold water connection port 9. With this configuration, the flow path of bathtub water when used as a vibra bath is shortened, and no bathing is required. Further, since the main part is integrated into one unit, there is an advantage that the connection with the bathtub 1 or the bathtub device can be simplified.

[Explanation of Effect] As described above, according to the present invention, the pump 7 is installed in the circulation path of the bath water to boil the bath water by the forced water flow.
The inside of the bathtub 1 is constantly stirred, and it is immediately known whether or not the bath temperature is suitable for bathing, and the usability is greatly improved.

On the other hand, an expensive pump 7 just to create a forced flow of bath water.
There is a problem of cost performance to install. As another configuration using the pump 7, it is known that a high-speed water stream is blown into the bathtub 1 and air is entrained in the water stream to form a vibra bath, but the conventional product is a dedicated machine and uses a natural circulation system. There was nothing that could be used for the existing bath kettle device of each method including.

This invention is a water jet nozzle 10 connecting an air suction pipe 11.
Is attached to the central portion of the hot water connection port 8 of the bathtub 1, and the surroundings function as the circulation portion of the bathwater as before. Therefore, when the bathwater is boiled by forced water flow, the bath pot device 2
The water pressure applied to the bath can be made extremely small, and it can be used in combination with most bath bath devices including the existing bath bath device, thus expanding the range of use.

When functioning as a vibra bath, the pump 7 is operated at high speed, the flow path to the bath device 2 is cut off, and the discharge side of the pump 7 is connected only to the water jet nozzle 10.
The bath pot device 2 communicates with the inside of the bath tub 1 through the hot water connection port 8 and remains at atmospheric pressure, and high water pressure can be created by increasing the rotation speed of the pump 7. No matter what structure is used, the performance as a vibra bus can be fully demonstrated.

In addition, both the system for heating bath water by forced circulation and the system for vibrating baths by high-pressure water flow have a pump 7 as a high-priced component. By also using this pump 7, a forced circulation heating system for bathtub is provided. And the vibra bath system could be put to practical use at low cost, and moreover, the forced circulation type bubble bath device can be expected to spread because it is possible to use any bath device without specifying the bath device. .

Further, since the pump 7 of the present invention is mounted in relation to the circulation pump 3 instead of the main body of the bath hook device 2, the pump 7 and the opening / closing valve 12 are mounted in the frame body 15 provided in the vicinity of the bathtub 1 to form a unit. It was made. Conventionally, both the vibra bath and the forced circulation system for bathtubs are known for their excellent effects, but they are expensive and expensive, and the installation work is quite complicated. However, as in the present invention, the existing bathtub device can be used as it is by simply adding a unit, so that the vibra bath and the forced circulation device for bath can be widely used.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view of an essential part of another embodiment, and FIG. 3 is a sectional view of parts. 1 ... tub, 2 ... bath bath device, 3.4 ... circulation pipe, 5 ... inlet port 6 ... outlet port, 7 ... pump, 8 ... hot water connection port, 9
...... Cold water connection port 10 …… Water jet nozzle, 11 …… Air suction pipe, 12 …… Open / close valve 13 …… Air chamber, 14 …… Branch pipe, 15 …… Frame body

Claims (4)

[Claims] 1. A hot water connection port 8 and a cold water connection port 9 in the bathtub 1.
, And the hot water outlet 6 and the cold water inlet 5 are provided in the bath hook device 2, and the cold water connection port 9 and the inflow port 5 and the outflow port 6 and the hot water connection port 8 are two circulation pipes 3.・ In the bath device which is connected by 4 and heats the bath water, a pump 7 capable of switching between high speed operation and low speed operation is attached to the circulation pipe 3 between the cold water connection port 9 and the inflow port 5,
At the time of low pressure output at low speed operation, a forced water flow toward the bath device 2 is created, and a water jet nozzle 10 is attached to the center of the hot water connection port 8 from the circulation pipe 4 side into the bathtub 1 and the water jet is made. An air suction pipe 11 for taking in air is connected to the nozzle 10, and the circulation pipe 3 on the discharge side of the pump 7 is connected.
A branch pipe 14 that branches from the branch pipe is connected to the water jet nozzle 10, and an opening / closing valve is provided on the circulation pipe 3 on the bath hook device 2 side from the branch portion.
A forced circulation bubble bath apparatus equipped with a control device for mounting the valve 12, closing the on-off valve 12 when the pump 7 outputs a high pressure by high-speed operation, and ejecting a water flow mixed with air from the water ejection nozzle 10. 2. The forced circulation bubble bath apparatus according to claim 1, wherein the cold water connection port 9 provided in the bathtub 1 is formed in a ring shape on the outer periphery of the hot water connection port 8. 3. The forced circulation bubble bath apparatus according to claim 1, wherein the pump 7 and the on-off valve 12 are mounted in a frame 15 provided near the bathtub 1 away from the bath apparatus 2. 4. The forced circulation bubble bath apparatus according to claim 1, wherein the motor of the pump 7 is driven by direct current.