JPH0833232B2 - Bathtub hot water insulation / purification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Field of Industrial Application The present invention relates to a circulation pump for circulating hot water in a bathtub,
A heater for heating the circulating hot water by the circulation pump,
The present invention relates to a heat retention / purification device for hot water in a bathtub, which is provided with a purifying unit for purifying the circulating hot water and a jet pipe which is connected to a circulation pump and opens into the bathtub.

(2) Conventional Technology Conventionally, such an apparatus is known, and while circulating hot water in the bathtub with a circulation pump, the circulating hot water is purified by a purifying unit and heated by a heater, so that an appropriate temperature of clean hot water is provided in the bathtub. It is always reserved, and the massage effect is obtained in the bathtub by vigorously ejecting circulating hot water from the ejection pipe into the bathtub.

(3) Problems to be Solved by the Invention In the conventional heat insulation / purification device described above, a circulation pump having a constant capacity is used, and hot water always circulates at a constant circulation speed regardless of whether bathing or not. However, when the circulation speed is set to be relatively high, a relatively strong jet can be jetted from the jet pipe, so there is an advantage that a sufficient massage effect can be obtained when bathing, On the other hand, since the circulation speed of hot water is high, aerobic microorganisms do not sufficiently adhere to and stay in the purification means, making it difficult to promote the reproduction of the microorganisms in the purification means and improve the cleaning efficiency. Since the circulation pump is operated at an unnecessarily high speed even when taking a bath, there are disadvantages such as a disadvantage in reducing operating noise and saving power. When the circulation speed of the hot water is set to be relatively low in order to eliminate such a drawback, the jet flow from the jet pipe is weak, and a sufficient massage effect cannot be obtained when taking a bath.

There is also an ozone generator connected to the ejection pipe to obtain a bactericidal effect, but mixing of this ozone into the jet stream is
It is better to avoid when taking a bath.

The present invention has been made in view of such circumstances,
An object of the present invention is to provide a heat retention / purification device for bath water which solves the conflicting problems all at once by changing the operation mode according to the selection when bathing or not bathing.

B. Configuration of the Invention (1) Means for Solving the Problems In order to achieve the above-mentioned object, the invention of the claims is for circulating a bath water and heating the circulating water by the circulation pump. A heater, a purifying means for purifying the circulating hot water, in which aerobic microorganisms can propagate, and an ejection pipe connected to the circulation pump and opened in the bath,
Even in the non-bath state, the hot water in the bathtub is circulated by the circulation pump, purified by the purifying means, and heated by the heater, so that a clean hot water of an appropriate temperature can always be stored in the bathtub. In the heat retention / purification device, the circulation pump is configured so that the capacity can be switched between large and small, and the control device for controlling the operation of the circulation pump is a selection switch for selecting the bathing state and the non-bathing state, and the selection switch. Circulation pump capacity switching for switching between a state in which the capacity of the circulation pump is increased according to the bathing state selected and a state in which the capacity of the circulation pump is reduced according to the non-bathing state selected by the selection switch And a heater for heating the circulating hot water by the circulating pump, the circulating pump for circulating the hot water in the bathtub, For purifying ring water, and fertile purification means aerobic microorganisms, the ozone generator comprising,
A jet pipe connected to the circulation pump and opening into the bathtub to which the ozone generator is connected; and in the non-bath state, the hot water in the bathtub is circulated by the circulation pump to be purified by the purification means, and In a bath hot water heat retention / purification device capable of always storing an appropriate temperature of clean hot water in a bath by heating with a heater, the circulation pump is configured to be capable of switching between large and small volumes. The control device for controlling the operation of the ozone generator includes a selection switch for selecting a bathing state and a non-bathing state, a state in which the capacity of the circulation pump is increased in response to the bathing state being selected by the selection switch, and A circulation pump capacity switching unit that switches the state in which the capacity of the circulation pump is made small in response to the non-bathing state being selected by the selection switch, and the bathing state by the selection switch. An ozone generation switching unit that switches the state in which ozone generation by the ozone generator is stopped according to the selection and the state in which ozone is generated by the ozone generator in response to the non-bathing state being selected by the selection switch. It is characterized by being provided.

(2) Action According to the above configuration of the claim, when the bathing state is selected by the selection switch, the capacity of the circulation pump is increased, and when the non-bathing state is selected by the selection switch, the capacity of the circulation pump is set. Is considered small.

According to the above configuration of the claimed invention, when the bathing state is selected by the selection switch, the capacity of the circulation pump is increased and the ozone generation in the ozone generator is stopped, and the non-bathing is performed by the selection switch. When the state is selected, the capacity of the circulation pump is reduced and ozone is generated and mixed in the jet flow into the bath.

(3) Embodiment One embodiment of the present invention will be described below with reference to the drawings.

1 is a cutaway perspective view of a bathtub in which the apparatus of the present invention is installed, FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1, and a sectional view taken along the line II-II of FIG. 3 is a cutaway front view of the rear case half along the line III-III in FIG. 2, FIG. 4 is a bottom view of the purification case seen from the direction of arrow IV in FIG. 3, and FIG. FIG. 6 is a block diagram showing the configuration of the control device, and FIG. 7 is a front view of the control box.

First, referring to FIG. 1, FIG. 2, FIG. 3 and FIG.
To purify the hot water in the bathtub V _B while keeping it at an appropriate temperature,
A purification case C made of hard synthetic resin is detachably attached to the inner surface of V _B. This purification case C is formed in a hermetically-sealed state by splitting the front case half C _F and the rear case half C _{R so} that they can be opened and closed. Thus, in the front case half C _F , a jet port 4 for jetting clean hot water is opened in the center of the front surface, and suction ports 5, 5 are opened on both sides of the lower edge. The plurality of suction cups 6 ... is attached to the rear surface of the rear case half body C _R, the rear case half C _R ie purifying case C is detachably attracted to and held on the inner surface of the bath V _B by these suckers 6 ... . More rear of the rear case half body C _R, substantially U-shaped guide groove 7 along its left and right side and lower edges
The cabtire cable 8 extended from the control box B _C installed outside the bathroom is received in the guide groove 7, and the end of the cabtire cable 8 is introduced into the purification case C. To be done.

A pair of hinge pieces 10, 10 extending forward are integrally provided at the lower part of the rear case half body C _R , and the front case half body C _F
The lower end portion of the hinge piece 10,10 via the hinge pin 11,
Pin-coupled to each. Thereby the front case half
C _F can be opened and closed vertically around the hinge pin 11 with respect to the rear case half C _R.

Inside the rear case half C _R , multiple left and right lateral ribs 20
…, 21… are arranged in parallel with each other at intervals in the vertical direction and are integrally projected, and their left and right lateral ribs 20
The inner surface of the rear case half C _R in the central part between…, 21…
A channel wall member 22 having a channel-shaped cross section that extends in the vertical direction across the left and right lateral ribs 20, ..., 21 is fixed by a plurality of screws 23.

In the rear case half C _R , the peripheral wall 23 and the partition wall 1
4, 15 and the passage wall member 22 define left and upper right accommodation spaces 16 and 17 and left and lower right spaces 18 and 19, and the passage forming member 22 and the rear case half C _R The clean hot water passage 23 defined between the inner wall of the passage wall member 22 and the right and left edges of the passage wall member 22 straddles the left and right lateral ribs 20 ... left through the inlet 24 ₁ ... formed between the inner surface of the rear case half C _R, it is communicated with the right upper accommodation space 16, 17.

Left and right purifying means in the left and upper right storage spaces 16 and 17
FL _L and F _R are detachably accommodated respectively, and the left lower accommodation space 18 accommodates and supports a circulation pump P _W and a connector box 25 for collectively connecting wires such as electric wires and pipes. electric heater H _E is accommodated support is.

Left purifying means F _L and right purifier F _R is found the left purifier F _L is long formed in the longitudinal direction than the right purification means F _R, since the basic configuration is the same, right purifier Explaining the configuration of F _R, the right purification unit F _R is configured by mutually superposing the filter unit 26 and the activated stone unit 27. The filter unit 26 is formed into a flat shape by loading a fiber filter 29 such as glass fiber in a rectangular frame body 28 made of stainless steel.
The frame 29 is exposed flat on both the front and back surfaces of the frame 28. In addition to the original filter function of filtering unclean hot water, the fiber filter 29 also serves to provide an environment in which aerobic microorganisms can propagate, as will be described later, inside the filter 29. The activated stone unit 27 is the filter unit.
Similar to the frame body 28 of 26, an active stone 31 such as barley stone is loaded in a rectangular frame body 30 and a mesh plate 32 such as a wire mesh is stretched on both front and back surfaces of the frame body 30 to form a flat shape. .

The activated stone 31 such as barley stone has a function of eluting natural minerals in hot water passing through it and adsorbing and decomposing pollutants and organic substances that cannot be filtered by the filter unit 26.

The left and right purifying means F _L, F _R is the rear case half C _R of the peripheral wall 13, and each interposed resilient gasket 33 ... to between the partition 15 and the passage wall member 22 left, upper right Accommodation space 1
6,17 to and intended to be accommodated respectively, between these left and right purifying means F _L, F back and the rear case half body C _R inner surface of the _R, left, right transverse ribs 20 ..., 21 ... each purification unit F _L, by contacting the back of F _R, a plurality of flat clean water chamber 34 ... are formed, clean water passages 24 thereof clean water chamber 34 ... via the inlet 24 ₁ Be communicated to.

On the inner surface of the front case half C _F , the left and right purification means _FL , F _R
Ribs that abut the front surface of the fiber filter 29 ...
35 ... are projected integrally, and the front and rear case halves C _F ,
When _CR is closed and Purification Case C is sealed, each rib 35 ...
The front case half C _F and the left, to form right purifier F _L, a flat uncleaned water chamber 37 ... between F _R.

Further, inside the left and right sides of the purification case C, the suction port 5,
Hot water inflow passages 38, 38 are formed to connect 5 to the unclean hot water chamber 37.

Circulation pump P _W stored and supported in the lower left storage space 18
The suction port 40 is communicated with the clean hot water passage 24 through the connecting pipe 41, and the discharge port 42 of the circulation pump P _W is connected to the jet pipe 43. Thus, the ejection pipe 43 passes through the ejection port 4 opened at the center of the front surface of the front case half C _F and is opened inside the bath V _B.

The heating chamber 45 of the electric heater H _E accommodated and supported in the lower right accommodation space 19 is communicated with the hot water in the purification case C and is also communicated with the connecting pipe 41 via the flexible pipe 46. Therefore, the hot water heated to an appropriate temperature in the heating chamber 45 is sucked into the suction system of the circulation pump P _W.

A connection hose 44 extending from the connector box 25 is connected in the middle of the ejection pipe 43. Thus, in the cabtire cable 8 connected to the connector box 25,
As shown in FIG. 5, a pipe 47 surrounded by a plurality of electric cables is arranged, the connection hose 44 is connected to the pipe 47 in the connector box 25, and the pipe 47 will be described later. It is connected to the ozone generator 50.

In FIG. 6, wherein the cleaning case C, a temperature detector 51 for detecting the water temperature in the bathtub V _B, and the water level detector 52 for detecting the water level in the bathtub V _B is arranged, the circulating Pump P _W ,
Electric heater H _E , the temperature detector 51 and the water level detector
The electric wires respectively connected to 52 are respectively connected to the control device 53 in the control box B _C via the cabtire cable 8. In addition, an ozone generator is installed in the control box B _C.
50 is also provided.

The ozone generator 50 includes an ozone generation chamber 58 in which a corona discharge unit 56 connected to a high pressure generation unit 55 is formed in a housing 57.
The ozone generating chamber 58 is housed in the air filter 59.
It is opened to the atmosphere through and is connected to the pipe 47. Thus, the high voltage generating section 55 is activated to activate the corona discharge section.
By generating corona discharge at 56, ozone generating chamber 58
The ozone generated in the air is blown out together with the air purified by the air filter 59 through the pipe 47 and the connection hose 44.
In the cabtire cable 8, the air generated in the electric wire around the pipe 47 warms the air.

Control device 53, a circulating pump capacity switching section 61 for switching the capacity of the circulation pump P _W, an ozone generator switching unit 62 for switching the operation and stop of the ozone generator 50, the electric heater H _E on state and an off state A heater on / off switching unit 63 for switching between, and a central processing unit CPU including a microcomputer for giving a control signal to the switching units 61, 62, 63,
Bathing selection switch 64 ₁ and non-bathing selection switch 64 ₂ for manually selecting the bathing state and the non-bathing state, and a temperature raising setting switch 65 ₁ and a temperature lowering setting switch 65 for setting the hot water temperature in the bathtub V _{B. 2} and a temperature display unit 66.

The temperature detector 51 includes a central processing unit CP via an amplifier 67.
Connected to U. Also, the switches 64 ₁ , 64 ₂ , 65 ₁ , 65
₂ and the water level detector 52 are connected to the central processing unit CPU via a buffer circuit 68.

By the way, the primary coil of the transformer 70 is connected to the AC power source via the earth leakage breaker 69.
Electric heater H _E and the circulation pump P to the secondary coil 70a
_W is connected.

The circulation pump P _W is configured so that its capacity can be switched between large and small. That is, the circulation pump P _W is connected between both ends of the secondary coil 70a to increase the capacity, and between the one end of the secondary coil 70a and an intermediate portion thereof to decrease the capacity. Is switched by the function of the circulation pump capacity switching unit 61. The circulation pump capacity switching unit 61 includes an inverter 72, a delay circuit 73, an inverter 74 and a relay coil.
A DC circuit that is composed of 75 and is connected to the output terminal 71 of the central processing unit CPU and the DC power supply 81, and a series circuit that is composed of a delay circuit 77, an inverter 78 and a relay coil 79 and is connected in parallel to the DC circuit, The relay switch 75 is electrically connected in response to the excitation of the relay coil 79 and the relay switch 76 interposed between the other end of the secondary coil 70a of the transformer 70 and the circulation pump P _W in order to conduct the relay coil 75 in accordance with the excitation. Relay switch installed between the intermediate part of the secondary coil 70a and the circulation pump P _W in the transformer 70
Equipped with 80 and.

The central processing unit CPU outputs a low-level control signal to the output terminal 71 when the bath selection switch 64 ₁ is turned on, and outputs a high-level signal to the output terminal 71 when the non-bath selection switch 64 ₂ is turned on. When the bath selection switch 64 ₁ is turned on, the relay coil 75 is excited to make the relay switch 76 conductive, and the circulation pump P _W is connected between both ends of the secondary coil 70a of the transformer 70. The capacity of P _W becomes large, and when the non-bathing selection switch 64 ₂ is turned on, the relay coil 79 is excited and the relay switch
80 becomes conductive, the circulation pump P _W is connected between one end and the intermediate portion of the secondary coil 70a of the transformer 70, and the capacity of the circulation pump P _W becomes small. The delay circuits 73 and 77 are for preventing inrush current at the time of switching on / off.

The ozone generation switching unit 62 has an output terminal 82 of the central processing unit CPU.
And a relay coil 84 connected in series between the DC power supply 81 and a relay switch 85 interposed between the high voltage generation unit 55 and the earth leakage breaker 69 in the ozone generator 50, and the relay switch 85 is Relay coil 84
Conducts according to the excitation of.

Thus, the central processing unit CPU outputs a high-level control signal that lasts for a fixed time, for example, 30 minutes from the output terminal 82 in response to the bathing selection switch 64 ₁ being turned on, and when the non-bathing selection switch 64 ₂ is on, Immediately thereafter, for example, a low-level signal connected for 15 minutes is output from the output terminal 82, and thereafter, a low-level signal lasting only 5 minutes per hour is repeatedly output from the output terminal 82. Therefore, when the bath selection switch 64 ₁ is turned on, the relay coil 84 is demagnetized by connecting for 30 minutes, for example, while the relay switch 85 is in the cutoff state,
Ozone generation in the ozone generator 50 is stopped. Also when the non-bathing selection switch 64 ₂ on, for example, only 15 minutes the relay coil 84 is sustained only subsequently, for example for example 5 minutes per hour while being energized relay coil
84 is excited, the relay switch 85 is turned on in response to the excitation of the relay coil 84, and ozone is supplied from the ozone generator 50.

Heater on-off switching section 63 includes an inverter 88 and a relay coil 89 connected in series between the output terminal 87 and a DC power source 81 of the central processing unit CPU, between the secondary coil 70a and the electric heater H _E transformer 70 The relay switch 90 is provided with the relay switch 90.
Conducts according to the excitation of.

Thus, the central processing unit CPU uses the electric heater according to the difference between the temperature set by the temperature raising setting switch 65 ₁ and the temperature lowering setting switch 65 ₂ and the hot water temperature detected by the hot water temperature detector 51. H _E
When it should be heated by, output a low level control signal to the output terminal 87 to make the relay switch 90 conductive,
When the heating should be stopped, a high level control signal is output to the output terminal 87 to shut off the relay switch 90.

The temperature raising setting switch 65 ₁ is a push button switch for raising the set temperature, for example, once, and the temperature lowering setting switch 65 ₂ is a push button switch for lowering the set temperature, for example, 1 degree each. Is. On the other hand, the temperature display unit 66 is connected to the central processing unit CPU via the data bus 91, and has a 2-digit “day” 7-segment numeric display unit 92, 93 for displaying the set temperature. Decoders 94 and 95 individually connected to the display units 92 and 93, a latch circuit 96 common to both the decoders 94 and 95, and a two-digit "day" 7-segment number for displaying the measured temperature Display units 97 and 98, decoders 99 and 100 individually connected to the display units 97 and 98, and a latch circuit common to both decoders 99 and 100
101 and.

Thus, the central processing unit CPU sends to the latch circuit 96 a signal for displaying the set temperature corresponding to the manual operation of the temperature raising setting switch 65 ₁ and the temperature lowering setting switch 65 ₂ on both the numerical display portions 92, 93. The latch circuit 101 is provided with a signal for displaying the hot water temperature detected by the hot water temperature detector 52 on both of the numeral display portions 97, 98.

Further, in response to the signal input from the water level detector 52, the central processing unit CPU operates the circulation pump P _W , the ozone generator 50 and the electric heater H _E when the water level in the bathtub V _B falls below a predetermined value. Output a signal to forcibly stop
It is configured to output from 1,82,87.

In FIG. 7, the control device is on the surface of the control box B _C.
Power switch 102 for turning on / off the AC power supply of 53
When the various switch 64 _1, 64 _2, 65 _1, 65 _2, and the numeral display section 92,93,97,98, and lamps 103 that lights up when the electric heater H _E is in the ON state, the ozone generator Lamp 104 that lights up when the container 50 is in the ozone generating state and the circulation pump P _W
And a lamp 105 that is turned on when is operated.

Next, the operation of this embodiment will be described. When the circulation pump P _W is operated, the hot water in the bathtub V _B is sucked into the purification case C from the suction ports 5 and 5, as shown by an arrow a in FIG. To
It flows into the unclean hot water chamber 37 through the hot water inflow passages 38, 38 on the left and right sides. Next, the hot water in the unclean hot water chamber 37 is shown in Figs.
Purifying means F _L as indicated by an arrow b in the figure, it passes through the filter unit 26 and the active stone units 27 F _R, the fiber filter 29
The clean hot water purified by the filtering action in step 1 and the adsorptive decomposition action by the activated stone 31 flows into the clean hot water chamber 34, and further from the clean hot water chamber 37 to the clean hot water passage 24 as shown by an arrow c in FIG. The flowing clean water is sucked into the circulation pump P _W through the connecting pipe 41. The hot water heated by the electric heater H _E is the circulation pump P _W are sucked through a flexible pipe 46, the circulation pump P _W
The heated hot water is heated to an appropriate temperature and is purified, and the hot water is ejected from the ejection pipe 43 into the bath V _B. Moreover, due to the ejector action in the ejection pipe 43, the air from the ozone generator 50 is sucked into the ejection pipe 43, and the clean hot water containing the bubbles is ejected from the ejection pipe 43.

By the way, when the bath selection switch 64 ₁ is turned on during bathing, the capacity of the circulation pump P _W is increased and the ozone generation by the ozone generator 50 is stopped for 30 minutes, for example. Therefore, bubbles that do not contain ozone are vigorously ejected from the ejection pipe 43, and a sufficient massage effect can be obtained while avoiding the adverse effects of ozone on the human body. Further, after bathing, the non-bath selection switch 64 ₂ When is selected, the capacity of the circulation pump P _W is switched to small and
Ozone will be generated in the ozone generator 59, and a relatively weak jet flow will be ejected from the ejection pipe 43 into the bathtub V _B together with bubbles containing ozone. Moreover Immediately after selecting the non-bathing selection switch 64 _2, ozone persisted only example 15 minutes is blown into the bath V _B, so that the sterilization of water soiled by bathing is performed immediately.

Thus the selection of the non-bathing selection switch 64 _2, together with the time of non-bathing can be obtained sterilizing effect of ozone can be suppressed wasteful power consumption by the circulating pump P _W. Further, since the capacity of the circulation pump P _W is small, the operation noise of the circulation pump P _W is also reduced, which can contribute to the reduction of the operation noise when not bathing. Moreover, the purification means _FL ,
In the fiber filter 29 in F _R , since the flow rate of hot water is relatively small, it is possible to obtain an environment suitable for the reproduction of aerobic microorganisms, and to promote the reproduction of aerobic microorganisms, The purification efficiency can be improved by promoting the organic purification action.

In the above embodiments, purification means F _L, F _R, has been described insulation-purifying apparatus so as to install a clean case C having a built-in circulation pump P _W and the electric heater H _E into the bathtub V _B, the invention, the purifying means F _L, F _R, is also applicable to thermal insulation and purification apparatus that is installed a circulating pump P _W and the electric heater H _E etc. outside bath V _B.

C. Effect of the Invention As described above, according to the claimed invention, the capacity of the circulation pump is made large when the bathing state is selected by the selection switch, and the capacity of the circulation pump is made large when the non-bathing state is selected by the selection switch. Since the volume is small, the circulation speed of the hot water becomes relatively high when taking a bath, and a sufficiently strong jet can be jetted from the jet pipe, so that an appropriate massage effect can be obtained. On the other hand, when the bath is not bathed, the circulation speed of the hot water is relatively low, and the aerobic microorganisms can be sufficiently adhered to and retained in the purifying means. In addition, the power consumption and operating noise of the circulation pump when not bathing can be reduced, so that the inconvenience caused by operating the circulation pump even when not bathing can be suppressed as much as possible. .

According to the invention of the claim, when the bathing state is selected by the selection switch, the capacity of the circulation pump is increased, the ozone generation in the ozone generator is stopped, and the non-bathing state is selected by the selection switch. Since the capacity of the circulation pump is sometimes made small and ozone is generated by the ozone generator, in addition to the effect of the claim,
When bathing, ozone generation is automatically stopped to avoid adverse effects of ozone on the human body. When not bathing, ozone is automatically generated by the ozone generator to sterilize the hot water. be able to. Moreover, the common selection switch can collectively perform the capacity switching control of the circulation pump and the operation switching control of the ozone generator, which simplifies the control configuration, which leads to cost reduction and improvement in handling. Can contribute.

[Brief description of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a cutaway perspective view of a bathtub in which the device of the present invention is installed.
The drawing is an enlarged sectional view taken along the line II-II in FIG.
II sectional view, FIG. 3 is a cutaway front view of the rear case half along line III-III in FIG. 2, FIG. 4 is a bottom view of the purification case seen from the direction of arrow IV in FIG. 3, FIG. 5 shows VV of FIG.
FIG. 6 is a block diagram showing the configuration of the control device, and FIG. 7 is a front view of the control box. 43 ... Jet pipe, 50 ... Ozone generator, 53 ... Control device, 61 ... Circulation pump capacity switching unit, 62 ... Ozone generation switching unit, 64 ₁ , 64 ₂
... selecting switch, F _L, F _R ... purifier, H _E ... heater, P _W ...
Circulation pump, V _B ... Bathtub

Claims (2)

[Claims] And 1. A bath water circulating pump for circulating (P _W), and a heater for heating the circulating water by the circulating pump _{(P W) (H E)} , for purifying the circulating hot water ,
It is equipped with purification means (F _L , F _R ) capable of propagating aerobic microorganisms, and a jet pipe (43) connected to a circulation pump (P _W ) and opening in the bathtub (V _B ). The hot water in the bathtub (V _B ) is circulated by the circulation pump (P _W ), purified by the purification means (F _L , F _R ), and heated by the heater (H _E ). _B ) In the heat retention / purification device for bathtub hot water, which can always store a suitable temperature of clean water, the circulation pump (P _W ) can be switched between large and small, and the circulation pump (P _W ) Control device to control the operation of (5
3) is a selection switch (64 ₁ , 64 ₂ ) for selecting a bathing state and a non-bathing state, and a circulation pump (P _W depending on which bathing state is selected by the selection switch (64 ₁ , 64 ₂ ). ) And the selection switch (64 ₁ , 64 ₂ )
Circulation pump (P _W ) depending on which non-bath condition is selected in
And a circulating pump capacity switching unit (61) for switching the capacity of the bathtub to a small capacity. And wherein bath water circulating pump for circulating (P _W), and a heater for heating the circulating water by the circulating pump _{(P W) (H E)} , for purifying the circulating hot water ,
Aerobic microorganisms capable of reproduction purification means (F _L, F _R) and the ozone generator (50) and wherein the ozone generator while opening the continuous with the circulation pump (P _W) bath (V _B) within Bowl (5
0) is connected to the jet pipe (43), and the hot water in the bathtub (V _B ) is circulated by the circulation pump (P _W ) even in the non-bath state, and the purification means (F _L , F _R ) in by heating with clarified and the heater (H _E), temperature-maintaining bathtub hot water so as to be constantly reservoir clean hot water optimum temperature in the bath tank (V _B) within
In the purification device, the circulation pump (P _W ) is configured so that the capacity can be switched between large and small, and the control device (53) that controls the operation of the circulation pump (P _W ) and the ozone generator (50) is in the bath state. And the selection switch (64 ₁ , 64 ₂ ) for selecting the non-bathing state, and the capacity of the circulation pump (P _W ) is set large according to the selection of the bathing state by the selection switch (64 ₁ , 64 ₂ ). And a circulation pump capacity switching unit (61) for switching the capacity of the circulation pump (P _W ) to a small capacity in response to the selected state and the non-bath state selected by the selection switches (64 ₁ , 64 ₂ ), When the bathing state is selected by the selection switch (64 ₁ , 64 ₂ ), the ozone generation by the ozone generator (50) is stopped and the non-bathing state is selected by the selection switch (64 ₁ , 64 ₂ ). Generates ozone from the ozone generator (50) depending on which is selected Thermal insulation and purification apparatus of the bath water, characterized in that it comprises an ozone generating switching unit for switching the state (62) to.