JPH09215619A - Bath water purifier - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a bathtub cleaning device for heating bathtub hot water at a low cost and with rapid and precise temperature control in a safe state in which hot water does not directly spray to the bathtub. A bathtub hot water inlet 19 is provided in a cleaning pipe 14.
And a hot water inlet 20 provided with an outflow port 21 and a flow rate control valve 22 that opens and closes according to the hot water temperature of the bath tub, and a hot water temperature controller 18 is provided to provide a cheap heat source such as midnight power and solar heat energy. Hot water storage tank 23 for storing hot water heated by
Connect the hot water supply pipe 24 to the hot water inlet of the hot water temperature controller,
An automatic hot water temperature setting device 27 including a hot water temperature setting key 28, a pulse motor 29 and a pulse motor drive control device 30 is provided for the flow rate adjusting valve, and the operating range of the flow rate adjusting valve is automatically adjusted according to the set temperature. Meanwhile, the hot water from the hot water tank is mixed with the hot water from the hot water storage tank to adjust the hot water temperature by opening and closing the flow rate adjusting valve based on the hot water temperature of the hot water bath.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath device, and in particular, it performs a cleaning process such as filtration and sterilization while forcibly circulating hot water in a bath and at the same time keeps the temperature set by a bather.
The present invention relates to a so-called 24-hour bath device in which bath water is constantly kept clean and at an appropriate temperature so that it can be bathed at any time for 24 hours.

[0002]

2. Description of the Related Art Recently, a bathtub hot water purifying apparatus, that is, a 24-hour bath, which constantly keeps hot water in a bathtub clean and at an appropriate temperature, enables comfortable bathing for 24 hours, and saves water, has been actively used. It has become.

An example of such a bath water purifying apparatus is shown in FIG. 6, in which 1 is a bath, 2 is hot water, 3 is a suction pipe for pumping hot water 2 in the bath 1, and 4 is a suction pipe. An apparatus main body in which devices for cleaning the hot water pumped up by the hot water pipe 3 are collectively arranged, and a spout tube 9 for ejecting the hot water processed by the device main body 4 again into the bathtub 1.

In order to remove dirt from the bath water, the apparatus body 4 is filled with various granular filter media such as activated carbon, activated stone, porous ceramic balls, etc., or a fibrous filter, individually or in combination, and a filtration tank 5. A circulation pump 6 for forcibly circulating hot water, an electric heater 7 for keeping the hot water at an appropriate temperature, and a cleaning device such as an ozonizer 8 as an ozone sterilizer for the hot water are provided.

Numeral 10 is a prefilter attached to the tip of the hot water pipe 3 for removing large dirt in advance before it is pumped up to the apparatus main body 4, and 11 is hot water after cleaning treatment in the bathtub 1 as a jet flow having a high flow rate. Intake pipe 1 ejected to the
Reference numeral 2 is a jet nozzle connected to the ejector section.

A solenoid valve 13 for opening and closing a pipe is provided at the end of an intake pipe 12 connected to an ejector portion of the jet nozzle 11, and an ozonizer 8 is provided on the way. When the solenoid valve 13 is opened, the jet nozzle 11 is opened. Air is sucked in from the suction pipe 12 by the suction force of the air, this air is mixed into the hot water in the ejector section 24, and a jet flow is jetted out of the jet nozzle 11 into the bathtub 1 to form a bubble bath. The air sucked into 12 is ozonized and jetted into the bathtub 1 to sterilize the hot water 2 with ozone.

[0007]

However, in the apparatus configured as described above, since the hot water is heated by the electric heater, the running cost is increased, and the capacity of the electric heater is 800 W in relation to the wiring capacity. The heating capacity is insufficient to heat 200 liters of bath water, so that the heating speed becomes slow.

As a result, it is difficult to raise the temperature of the hot water during bathing, and it is difficult to increase the temperature when the hot water is replaced or when the operation of the apparatus has been stopped for a long time. Takes a very long time to heat the hot water to the bathing temperature.

The present invention solves the above-mentioned drawbacks of the prior art, reduces the heating cost, rapidly heats the hot water to the temperature set by the bather, and accurately reaches the set temperature after reaching the set temperature. It is an object of the present invention to provide a bathtub cleaning device that can keep warm.

[0010]

Means for Solving the Problems That is, according to the present invention, hot water in a bathtub is pumped from a hot water pipe by a circulation pump and forcedly circulates in a cleaning pipe line to perform a filtering process in a filtration tank and a sterilization process using a sterilizing device, and then a hot water bath. In a bathtub hot water purifying device that re-spouts from a pipe to a bathtub, a hot water temperature controller having a hot water inlet for connecting a hot water supply pipe from a hot water supply means and a bathtub inflow and outflow ports to the cleaning pipeline The hot water temperature controller is equipped with a flow rate control valve that opens and closes according to the hot water temperature of the bath water that has flowed into the mixing chamber at the hot water inlet. An automatic hot water temperature setting device that automatically adjusts the operating range of the valve will be provided.

With such a configuration, the bath water is mixed with an appropriate amount of the hot water from the hot water supply means according to the temperature and rapidly heated to the set temperature, and the hot water is never directly jetted into the bath, which is a safe state. In addition, by automatically adjusting the operating range of the flow rate control valve according to the set temperature, the operating range of the flow rate control valve is accurately adjusted according to the set temperature, and the bath water can be set at the set temperature. You will be able to make accurate adjustments without overheating.

At this time, a flow rate control valve provided at the hot water inlet of the hot water temperature controller is a thermostat type which operates a piston to open and close the valve based on a volume change according to the hot water temperature of the bath water of the thermoelement. The automatic hot water temperature setting device automatically regulates the piston operating range in accordance with the set temperature set by the temperature setting means, and the cost is low, and it does not malfunction due to dirt and the bath water Allow the temperature to be adjusted.

Further, the hot water supply means is a hot water storage tank for storing hot water of a predetermined temperature, and the hot water storage tank is equipped with a midnight power source, solar heat,
The cost of heating is reduced by storing hot water heated by various cheap heat sources such as kerosene and gas.

Further, an electric heater for heating the hot water circulating in the cleaning pipe of the cleaning means is provided upstream of the hot water temperature controller so that the hot water for heating stored in the hot water storage tank is insufficient in the severe winter season. Also, an electric heater is used to supplementally heat the bath water so that it can be kept at the set temperature. [Detailed Description of the Invention]

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described based on the piping diagram of the embodiment shown in FIG. 1. The same components as those of the conventional example are designated by the same reference numerals.

The cleaning pipe 14 has an L-shape and a T-shape so as to form a so-called backwashing pipe for washing the filter medium filled in the filtration tank 5 by flowing hot water in the reverse direction of cleaning. Character-shaped switching valves 15 and 16 are provided.

Further, an ultraviolet sterilizer 17 is provided as a sterilizer, but of course the intake pipe 12 and the spout pipe 9 as in the conventional example.
It may be connected to a jet nozzle 11 attached to the tip of the so as to enjoy a bubble bath, or an ozonizer 8 may be provided in the middle of the intake pipe 12 so that ozone sterilization can be performed.

Reference numeral 18 denotes a hot water temperature controller whose detailed structure will be described later. The hot water temperature controller 18 includes a bathtub hot water inlet 19,
A hot water inlet 20 and a bath hot water outlet 21 are provided, and at the same time, a flow rate control valve 22 that opens and closes according to the temperature of the bath hot water flowing in from the bath hot water inlet 19 is provided for the hot water inlet 20. is there.

Reference numeral 23 denotes a hot water storage tank as hot water supply means, and the hot water storage tank 23 has a hot water supply pipe 24 on its upper surface.
Is connected to the bottom surface, the hot water supply pipe 24 is connected to the hot water inlet 20 of the hot water temperature controller 18, and the water input pipe 25 is connected upstream of the hot water temperature controller 18 of the cleaning line 14. Also, a heater 26 that uses late-night power is provided as a heating source at the bottom.

In this embodiment, the bath water is stored in the hot water storage tank 23 in the form of hot water which is heated by the heater 26 by using the midnight electric power to be stored as hot water. It may be heated or, if necessary, heated by normal power and stored as hot water.

Reference numeral 27 denotes an automatic hot water temperature setting device, in which a bather sets a hot water temperature setting key 28, and an operating range of a flow rate control valve 22 provided for a hot water inlet 20 of the hot water temperature controller 18. Of the pulse motor 29 for driving the adjusting member of the pulse motor 2 and the pulse motor 2 according to the temperature set by the hot water temperature setting key 28.
9 and a pulse motor drive control device 30 which is a microcomputer for controlling the drive of the hot water temperature controller 18, and the hot water temperature setting key 28 controls the operating range of the flow rate control valve 22 provided for the hot water inlet 20 of the hot water temperature controller 18. Automatically adjust according to the set temperature of.

The structure of the hot water temperature controller 18 will be described in detail with reference to FIGS. 2 and 3. In FIG. 2, 31 is a mixing chamber, and the mixing chamber 31 has a valve hole 3 at the center of the upper surface.
No. 3 is provided as the valve seat 32, and the bath water inlet 19 is provided on one side surface and the hot water flow is communicated with the valve seat 32 provided with the flow rate control valve 22 for the valve hole 33 on the other side surface. An inlet 20 is provided, and a bath water outlet 21 is provided on the lower surface.

The structure of the flow control valve 22 will be described. The valve shaft 34 has a valve cylinder 35 fixedly attached to the lower end of the valve shaft 34 for opening and closing the valve hole 33 of the valve seat 32, and flows into the mixing chamber 31 inside. A wax 37 as a thermoelement whose volume changes according to the temperature of the hot water in the bathtub is filled, and a thermostat 36 having a piston 38 whose lower end hits the wax 37 is vertically movable is fixedly fitted.

Reference numeral 39 designates a guide tube extending above the mixing chamber 31 to allow the valve shaft 34 of the flow rate control valve 22 to move up and down, and 40 is fitted on the upper end of the guide tube 39 to correspond to the set temperature of the bath water. Is a holding shaft for adjusting the operating range of the piston 38, and 41 is a plurality of holding springs for pushing the flow rate adjusting valve 22 upward.

The pulse motor 2 of the automatic hot water temperature setting device 27 is provided for the pressing shaft 40, which is a member for pressing the upper end of the piston 38 to adjust the operating range of the flow rate adjusting valve 22.
9 is attached, and the position of the pressing shaft 40 is automatically determined according to the set temperature of the hot water.

The valve cylinder 35 fixedly attached to the lower end of the valve shaft 34 of the flow rate control valve 22 is as shown in FIG. 3, and the upper half is a closed water cylinder 42 which is a cylinder for closing the valve hole 33 of the valve seat 32.
The lower half is a hot water cylinder 43, which is a cylinder provided with a plurality of cutout grooves 44 as hot water flow grooves at predetermined intervals, and a mounting hole 45 for mounting the valve shaft 34 at the center.
Is provided.

Therefore, in the flow rate control valve 22, after the valve cylinder 35 is attached to the lower end of the valve shaft 34 through the attachment hole 45, the valve cylinder 35 is inserted into the valve hole 33 of the valve seat 32 with respect to the mixing chamber 31.
The valve shaft 34 is vertically movably fitted to the guide tube 39, pushed upward by a plurality of pressing springs 41, and is arranged while pressing the upper end of the piston 38 with the pressing shaft 40 from above.

In this way, the flow rate control valve 22 is installed in the mixing chamber 3
1, the valve tube 35 is pushed upward, and the lower hot water tube 43, in which the cutout groove 44 of the valve tube 35 is provided at the position of the valve hole 33 of the valve seat 32, is positioned. Therefore, the valve is open.

Further, the automatic hot water temperature setting device 27 operates the pulse motor 29 under the control of the pulse motor drive control device 30 based on the hot water temperature set by the hot water temperature setting key 28, and holds down the upper end of the piston 38. The shaft 40 is automatically moved up and down to a position according to the set hot water temperature, and the operating range of the flow rate control valve 22 is adjusted according to the set temperature.

Using the hot water temperature controller 18 having the above structure, the hot water temperature of the bath water forcibly circulating in the cleaning pipe 14 is heated by the hot water stored in the hot water storage tank 23 to maintain an appropriate temperature as shown in FIG. It will be described based on.

First, when the operation of the apparatus is started, in the hot water temperature controller 18, the flow rate control valve 22 is pushed upward by the pressing spring 41 as shown in FIG. The hot water cylinder 43 is located in the valve hole 33 of the mixing chamber 31, the valve is opened, and the flow control valve 22 is opened by the automatic hot water temperature setting device 27.
The operating range of is adjusted according to the temperature set by the hot water temperature setting key 28 and is in the initial setting state.

When the operation of the apparatus is started in this state, the switching valves 15 and 16 are switched in the direction of the cleaning process, so that the circulation pump 6 draws the hot water pipe 3 into the bath 1. The hot water 2 is sterilized by the ultraviolet sterilizer 17, filtered by the filtration tank 5, and then flows through the electric heater 7 and the cleaning pipe 14.

At this time, when the microcomputer as the control device for controlling the entire device determines that auxiliary heating by the electric heater 7 is necessary due to the relationship between the outside air temperature and the amount of hot water stored in the hot water storage tank 23, the electric power is used. Heating by the heater 7 is performed.

As described above, the flow rate control valve 22 provided for the hot water inlet 20 of the hot water temperature controller 18 is opened and the hot water can flow from the hot water supply pipe 24 into the mixing chamber 31. Further, the other end of the water absorption pipe 25, one end of which is connected to the bottom surface of the hot water storage tank 23, is connected to the cleaning pipe 14 between the electric heater 7 and the hot water temperature controller 18.

Therefore, the hot water 2 that circulates through the cleaning pipe 14 and passes through the electric heater 7 flows through the cleaning pipe 14 toward the hot water temperature controller 18 and at the same time from the water suction pipe 25 to the hot water storage tank 2.
It flows toward 3.

As a result, at the same time as the hot water bath 2 flowing through the cleaning pipe 14 enters the hot water temperature controller 18 from the hot water inlet 19 of the hot water, the hot water stored in the hot water storage tank 23 enters from the bottom. Only the amount of hot water is pushed out to the hot water supply pipe 24 and enters from the hot water inlet 20.

Therefore, in the hot water temperature controller 18, the hot water stored in the hot water storage tank 23 is mixed with the hot water stored in the hot water storage tank 23 and circulated through the cleaning pipe 14 in the mixing chamber 31 and heated. Then, the water flows out from the bath water outlet 21 into the cleaning pipe 14 again, and returns to the bath 1 from the spout pipe 9.

In this way, as shown in FIG. 3A, the flow rate control valve 22 for the hot water inlet 20 of the hot water temperature controller 18 is opened, and the hot water stored in the hot water storage tank 23 is mixed and heated in the mixing chamber 31. If the state that continues is maintained, the temperature of the bath water 2 circulating through the cleaning pipe 14 and flowing into the hot water temperature controller 18 continues to rise.

Then, the flow rate control valve 22 provided for the hot water inlet 20 of the hot water temperature controller 18 is the thermostat 3
The temperature of the wax 37, which is the thermoelement filled in 6, rises, the volume expands, and the piston 38 is pushed up.

However, since the upper end of the piston 38 is pressed by the pressing shaft 40 at a position corresponding to the set hot water temperature, the flow rate control valve 29 gradually moves downward to close the valve, and eventually the bath water. When the temperature of 2 becomes the same as the temperature set by the bather, the state at the moment when the valve is closed, as shown in FIG.

That is, when the temperature of the bath water 2 rises and the volume control valve 22 continues to expand and decrease the volume of the wax 37 of the thermostat 36, the valve hole 33 of the valve seat 32 of the mixing chamber 31.
At the moment when the water temperature of the bathtub 2 is equal to the set temperature, the lower end of the hot water pipe 42 comes to the position of the valve hole 33 and closes the valve to close the hot water inlet. From 20, it will be in a state where hot water is not added.

When the flow rate control valve 22 is closed, the bath water 2 circulating in the cleaning pipe 14 does not flow in the direction of the hot water storage tank 22 after passing through the electric heater 7, and the hot water temperature controller 18 is entirely used.
Flowing in the direction, the hot water temperature controller 18 does not mix the hot water at all, and returns to the bathtub 1 without being heated.

As shown in FIG. (B), when the valve of the flow rate control valve 22 for the hot water inlet 20 of the hot water temperature controller 18 is closed and the bath water 2 is not heated and continues to circulate in the cleaning pipe 14, The temperature begins to drop.

Then, the flow control valve 22 goes up because the volume of the wax 37 of the thermostat 36 contracts and the force pushing the piston 38 upward weakens, so that the valve cylinder 35 goes up, and the hot water pipe 43 is the valve of the valve seat 31. The bath water 2 which is located in the hole 33 and has the valve opened and returns to the state shown in FIG. 9A and which is circulating in the cleaning pipe 14 is stored in the hot water storage tank 23 by the hot water temperature controller 18. The hot water is mixed and heated again before returning to the bathtub 1.

As described above, the bath water 2 circulating in the cleaning pipe 14 while the temperature of the hot water is adjusted is the hot water of the hot water temperature controller 18 at the moment when the temperature becomes equal to the set temperature. Since the flow rate control valve 22 provided for the inflow port 20 is closed, the temperature does not become higher than the set temperature.

Moreover, since the operating range of the flow rate control valve 22 is accurately adjusted by the automatic hot water temperature setting device 27 according to the set hot water temperature, the hot water is maintained at the set temperature more accurately.

That is, when the operating temperature of the flow control valve 22 is manually adjusted by manually turning the knob using the scale as a guide, the hot water temperature cannot be set very accurately.

Then, the flow rate control valve 22 cannot accurately set the set temperature even if the valve is opened and closed accurately based on the temperature of the bath water, so that the pressing shaft 40 positioned according to the set temperature can be positioned. Since the position varies and the operating range is not accurately adjusted with respect to the set temperature, the temperature of the bath water varies considerably with respect to the temperature that the bather thinks it has set.

However, when the operation range of the flow rate control valve 22 is adjusted by the automatic hot water temperature setting device 27, the bather can first set the hot water temperature accurately with the hot water temperature setting key 28, and then the hot water temperature is set accurately. Since the pressing shaft 40 is accurately positioned based on the above, and the operating range is accurately adjusted, the bath water can be accurately maintained at the set temperature.

However, even if the bath water 2 is overheated for some reason and becomes higher than the set temperature,
(C) As shown in the figure, the hot water inlet 2 of the hot water temperature controller 18
The flow control valve 22 for 0 is completely closed, and the bath water 2 is
Until the temperature falls below the set temperature, the hot water will never mix and the temperature will never rise too high.

That is, when the temperature of the bath water 2 becomes higher than the set temperature, the flow rate control valve 22 of the hot water temperature controller 18 continues to descend because the wax 37 of the thermostat 36 continues to expand, and eventually the valve seat 32 of the mixing chamber 31. The valve hole 33 of the valve cylinder 3
The upper end of the hot water closing cylinder 42 of No. 5 is closed and the valve is completely closed.

In this case, the bath water 2 continues to circulate in the cleaning pipe 14 without being heated and the temperature gradually decreases, and the flow rate control valve 22 of the hot water temperature controller 18 causes the wax 37 of the thermostat 36 to contract. The force that pushes the piston 38 upward weakens and gradually rises until it becomes the same as the set temperature, and after a state as shown in the diagram (b), it drops below the set temperature and as shown in the diagram (a). The hot water stored in the hot water storage tank 23 is never heated until the appropriate valve is opened again.

As described above, in the hot water temperature controller 18, the temperature of the hot water in the bathtub becomes the same as the set temperature, and at the same time, the flow rate control valve 22 provided for the hot water inlet 20 is closed to close the hot water storage tank 2.
Since the heating by mixing the hot water stored in 3 can be stopped, the bath water 2 is always at or below the set temperature,
It rarely gets too high.

Even if the temperature of the bath water 2 rises above the set temperature, the flow rate control valve 22 moves in the direction to close the valve firmly as the temperature of the bath water rises, and the valve is never opened until the temperature falls below the set temperature. Since it is not there, the hot water will not be mixed in during this time and it will never be too hot, which may cause a risk of burns.

Further, the hot water temperature controller 18 is provided with a flow rate control valve 22 provided for the hot water inlet 20 in the middle of the cleaning pipe 14 for the hot water bath 2, so that the cold hot water 2 always flows in. Since the temperature of the bath water 2 is adjusted by opening the valve and mixing the hot water stored in the hot water storage tank 23 only when the temperature of the bath water 2 drops below the set temperature.
Even if the valve fails, hot water does not spout in the bathtub 1 and is safe.

That is, when the flow rate control valve 22 fails and the valve remains closed, the bath water 2 is stored in the hot water storage tank 23.
There is no danger just by continuing to spout in the bathtub 1 at a temperature lower than the set temperature without being heated by mixing the hot water stored in
Even if the valve remains open, be sure to use a cold bath water 2
Since it will be in a state where the hot water and hot water are mixed, the bathtub hot water 2 having a temperature at which there is no danger of being burned even if the temperature becomes higher than the set temperature is jetted into the bathtub 1 and stored in the hot water storage tank 23. There is no danger that only the boiling water will be ejected into the bathtub 1 and burned.

When the flow rate adjusting valve 22 provided for the hot water inlet 20 of the hot water temperature controller 18 is of a thermostat type, the valve opens and closes up and down according to the temperature of the bath water 2, so that at a predetermined temperature. Much more precise temperature control is possible than the solenoid valve type that simply turns on and off.

The flow rate control valve 22 may have a structure in which the valve hole 33 is simply opened and closed by the valve lid 46 as shown in FIG. 5, but as shown in the embodiment, the hot water closing cylinder 42 and the hot water flowing cylinder 43 are provided. If the valve tube 35 divided into two parts is fitted in the valve hole 33 so as to be movable up and down, the valve opening and closing becomes more precise and accurate temperature control becomes possible.

That is, when the temperature of the bath water 2 is too lower than the set temperature, the flow rate control valve 22 has the hot water cylinder 43 provided with the notch groove 44 as the hot water flow groove, which comes out above the valve seat 32 to open the valve. It comes to open, but the hot water pipe 43 that appears above this valve seat 32
The amount of opening of the valve, that is, the hot water passing area, changes according to the temperature of the bath water 2.

Therefore, the hot water temperature controller 18 is proportional to the temperature difference between the set temperature and the hot water bath 2 in the mixing chamber 31 when the hot water bath 2 is heated to a temperature lower than the set temperature by opening the flow rate control valve 22. The amount of hot water stored in the hot water storage tank 23 enters from the hot water inlet 20 to heat the bath water 2 quickly and accurately to the set hot water temperature.

Moreover, at the moment when the bath water 2 reaches the set temperature, the valve is closed so that the hot water does not enter the mixing chamber 31, so that the bath water 2 rarely exceeds the set temperature.

On the other hand, when the temperature of the hot water bath exceeds the set temperature and the flow control valve 22 is closed, the length of the hot water closing cylinder 42 that appears below the valve seat 31, that is, the amount by which the valve is closed is also the hot water bath 2.
Is proportional to the temperature difference between the hot water and the set temperature, and if the hot water in the bathtub 2 is higher than the set temperature, the valve is completely closed until the hot water is higher than the set temperature. The temperature is adjusted accurately without opening and at the same time the bath water 2 is completely prevented from becoming too hot.

As the flow rate control valve provided for the hot water inlet 20 of the hot water temperature controller 18, a thermostat type as shown in the above embodiment is preferable, but a bath metal of a bimetal type or a shape memory alloy type is used. It goes without saying that other types of valves may be used as long as the valves can be opened and closed automatically depending on the temperature.

Also in the thermostat type flow control valve, as the thermoelement, a material other than wax, such as gas or low melting point alloy, which is sensitive to heat and greatly changes in volume may be used.

[0065]

The present invention is constructed as described above, and the hot water temperature controller 18 provided for mixing and heating the hot water stored in the hot water storage tank 23 according to the hot water temperature has an extremely structure. It's easy, cheap, and you can control the temperature accurately.

In the middle of the cleaning pipe 14, the hot water temperature controller 1
When the bath water 2 is mixed with the hot water stored in the hot water storage tank 23 according to the hot water temperature via 8 and heated, the cost is reduced in a safe state in which the hot water never spouts into the bath 1, and the bath water is rapidly heated. Can be heated to the set temperature.

Further, the flow rate control valve 22 is provided with an automatic hot water temperature setting device 27. When the bather sets the temperature with the hot water temperature setting key 28, the operating range is accurately adjusted according to the set temperature. Result The hot water temperature is adjusted more accurately to the set temperature.

[Brief description of drawings]

FIG. 1 is an example piping diagram,

FIG. 2 is a longitudinal sectional view of the first embodiment of the flow rate control valve,

FIG. 3 is a perspective view of a valve cylinder of the first embodiment of the flow rate control valve,

FIG. 4 is a longitudinal sectional view of a flow control valve according to a first embodiment of the present invention in a valve opened / closed state

FIG. 5 is a longitudinal sectional view of a second embodiment of the flow rate control valve,

FIG. 6 is a conventional flow rate piping diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bath 2 Hot water 3 Hot water suction pipe 4 Device body 5 Filtration tank 6 Circulation pump 7 Electric heater 9 Fountain pipe 14 Cleaning pipeline 18 Hot water temperature controller 19 Bath hot water inlet 20 Hot water inlet 21 Bath hot water outlet 22 Flow rate adjustment Valve 23 Hot water storage tank 24 Hot water supply pipe 27 Automatic hot water temperature setting device 28 Hot water temperature setting key 29 Pulse motor 30 Pulse motor drive control device 31 Mixing chamber 32 Valve seat 33 Valve hole 34 Valve shaft 35 Valve cylinder 36 Thermostat 37 Wax (thermo element) ) 38 piston 40 pressing shaft 41 pressing spring 42 closing cylinder 43 passing tube 44 notch groove

Claims (4)

[Claims] 1. A bathtub hot water in which a hot water in the bathtub is pumped from a hot water pipe by a circulation pump, forcedly circulates in a cleaning pipe line, filtered in a filtration tank, sterilized by a sterilizer, and then jetted again from the pipe to the bathtub. In the cleaning apparatus of 1, the hot water temperature controller provided with a hot water inlet for connecting the hot water supply pipe from the hot water supply means to the mixing chamber and an inflow / outflow of the hot water for the bath is provided in the cleaning pipe. The controller is equipped with a flow rate control valve that opens and closes according to the hot water temperature of the bath water that has flowed into the mixing chamber at the hot water inlet, and the flow control valve automatically adjusts the operating range of the valve according to the set temperature. An apparatus for automatically adjusting the hot water temperature, which is equipped with an automatic hot water temperature setting device, which mixes an appropriate amount of hot water according to the hot water temperature to bring it to a set temperature and ejects it to the bathtub. 2. A thermostat type flow control valve provided for a hot water inlet of a hot water temperature controller, which operates a piston and opens / closes a valve based on a volume change corresponding to the hot water temperature of a bath water of a thermoelement. The apparatus for cleaning bathtub hot water according to claim 1, wherein the automatic hot water temperature setting device automatically regulates the operating range of the piston according to the set temperature set by the temperature setting means. 3. The bath water purifying apparatus according to claim 1 or 2, wherein the hot water supply means is a hot water storage tank for storing hot water at a predetermined temperature. 4. The cleaning of bath water according to claim 1, wherein an electric heater for heating the bath water circulating in the cleaning pipe of the cleaning means is provided upstream of the water temperature controller. Device.