JP4437925B2 - Bath water circulation device and bath water circulation method - Google Patents

Description

  The present invention uses, for example, a vortex bath device that pumps hot water in a bathtub and reinjects it as a vortex flow, a bath water circulator used in a circulating carbonated spring production device that dissolves carbon dioxide gas in the hot water in the tub, and the bath water circulator. It relates to the bath water circulation method. In particular, the present invention relates to a bath water circulation device and a bath water circulation method that enable stable operation of the circulation pump from the start of operation of the bath water circulation device regardless of the type of the circulation pump used in the bath water circulation device.

  In the eddy current bath, the eddy current is applied to the human body to promote circulation, promote metabolism, relieve pain, relax muscles, and the like. It is said that there are both the thermal stimulation by hot water and the mechanical stimulation (micro massage effect) by the vortex as the effect of the vortex bath.

  On the other hand, carbonated springs have been used in bathhouses and the like that use hot springs for a long time because of their excellent heat retention. The warming action of carbonated springs is basically considered to be due to the improvement of the body environment due to the peripheral vasodilatory action of the carbon dioxide contained. Further, it is considered that the percutaneous approach of carbon dioxide gas causes an increase and expansion of the capillary bed and improves the blood circulation of the skin. For this reason, it is said that it is effective in the treatment of degenerative lesions and peripheral circulation disorders.

  In recent years, especially in the treatment using the above-mentioned carbonated spring, when the carbon dioxide concentration in the carbonated spring is around 1200 mg / L (liter), which is a supersaturated concentration range in hot water of about 40 ° C., the physiological effect of the carbonated spring is more remarkable. It has been found that it can be used in the future.

  As a method for artificially producing carbonated springs, for example, a carbonated spring production method for producing carbonated hot water by passing hot water supplied from a water heater or the like once through a carbon dioxide gas dissolver using a one-pass type carbonated spring production apparatus. There is a carbonated spring manufacturing method in which hot water in a bathtub is circulated through a carbon dioxide gas dissolver by a circulation pump using a circulating carbonated spring manufacturing apparatus. In particular, in the above-mentioned circulation type carbonated spring production method, even if the dissolving capacity of carbon dioxide in the carbon dioxide dissolver is low, it is easy to obtain a high concentration carbonated spring by increasing the number of circulations of hot water, that is, by increasing the circulation time. Can be manufactured.

  As an example of this type of circulating carbonated spring manufacturing apparatus, for example, a carbonated spring manufacturing apparatus including a circulation circuit that circulates bath water in a bathtub through a carbon dioxide gas dissolver by a circulation pump has been proposed (for example, Patent Document 1). reference).

  The carbonated spring manufacturing apparatus described in Patent Literature 1 includes a circulation pump 101 and a circulation circuit 102 outside the bathtub 100 as shown in FIG. A pre-filter 103 and a carbon dioxide dissolver 104 are disposed on the supply line of the circulation circuit 102. Hot water in the bathtub 100 is sucked up by the circulation pump 101 and supplied into the carbon dioxide dissolver 104 through the prefilter 103. As the circulation pump 101, a diaphragm pump which is a positive displacement metering pump having self-priming performance is used.

One carbon dioxide gas is supplied from the carbon dioxide gas cylinder 105 through the pressure reducing valve 106 and the shutoff valve 107 into the carbon dioxide gas dissolver 104. In the carbon dioxide dissolver 104, carbon dioxide is dissolved in warm water to produce a carbonated spring. This carbonated spring is returned from the carbon dioxide dissolver 104 to the bathtub 100 through the discharge line of the circulation circuit 102. In addition, the carbonated spring manufacturing apparatus described in Patent Document 1 was previously proposed by the present applicant.
JP 2001-293344 A

  By the way, when the circulation pump 101 used for the bath water circulation device is disposed at a position higher than the water level of the bath water, the circulation pump 101 is sucked and filled with water until the circulation pump 101 is stably operated. However, there is a problem that vibration and noise in the circulation pump 101 are large because the circulation pump 101 performs idle operation and sucks air. In addition, when a non-self-priming pump is used for the bath water circulation device, the bath water cannot be sucked depending on the height difference between the non-self-priming pump and the bath water. There was a problem that the bath water could not be circulated in the circulation circuit 102.

  On the other hand, as the circulation pump 101 used in the bath water circulation device described in Patent Document 1, a diaphragm pump which is a positive displacement metering pump having self-priming performance as described above is used. Although this diaphragm pump has the advantage that it can be started without priming during initial operation, the diaphragm pump is a brush pump, so it has a short life and is likely to generate noise and electromagnetic noise. Had.

  Further, in a positive displacement pump having self-priming performance, in order to maintain the self-priming performance, it is necessary to always store water in the circulation pump 101 using, for example, a self-priming tank. For this reason, if the stored water is left in the circulation pump 101 after the operation of the bath water circulation apparatus is finished, various germs easily propagate in the stored water. As a result, when the operation of the bath water circulation apparatus is started, various germs that have propagated together with the water remaining in the circulation pump 101 are mixed into the clean bath water in the newly collected bathtub 100. For this reason, there was a problem that the bath water newly stored in the bathtub 100 would become dirty.

  The present invention has been made to solve the above-mentioned problems, and provides a bath water circulation device capable of stably circulating clean bath water from the start of operation of the bath water circulation device with any kind of circulation pump. Is the first purpose. Furthermore, the second object is to provide a bath water circulation method capable of removing dirt accumulated in the circulation pump and the circulation circuit before the operation of the bath water circulation device is started.

The invention according to the claims 1, once taken out bath water in the bathtub to the outside of the bathtub, is high and circulation circuit for circulating the bath water, in said circulation circuit by again returning to said bath, a centrifugal pump, A circulation pump using either a brushless pump or a non-self-priming pump, a first switching valve arranged on the circulation circuit on the upstream side of the circulation pump, and the circulation circuit on the downstream side of the circulation pump A second switching valve arranged on the pressure circuit, a pressurized water supply means connected to the circulation circuit via the first switching valve, and a pressurized water connected to the circulation circuit via the second switching valve. A bath water circulation apparatus comprising: a discharge means; and an air supply means having a stop valve and connected to the circulation circuit between the first switching valve and the circulation pump. .

The invention according to claim 2 is the invention according to claim 1 , wherein at least one of the first switching valve and the second switching valve is a three-way switching valve.

The invention according to claim 3 is the invention according to claim 1 or 2, characterized in that at least one of the three-way switching valve or the stop valve is an automatically controlled valve.

The invention according to claim 4 is the invention according to any one of claims 1 to 3 , wherein a carbon dioxide gas dissolver is disposed in the circulation circuit, and a carbon dioxide gas supply means is connected to the carbon dioxide gas dissolver. It is characterized by being.

The invention according to claim 5 is the invention according to any one of claims 1 to 4 , wherein the circulation pump is disposed above the bathtub, and the circulation circuit is stopped when the operation of the circulation pump is stopped. It is characterized by that the bath water inside can be drained by its own weight.

The invention according to claim 6 is the invention according to any one of claims 1 to 5 , wherein the pressurized water is tap water.

The invention which concerns on Claim 7 is arranged in the circulation circuit which circulates the said bath water by once taking out the bath water in a bathtub out of the bathtub, and returning in the said bathtub again, A centrifugal pump, brushless A circulation pump using either a pump or a non-self-priming pump, a first switching valve arranged on the circulation circuit on the upstream side of the circulation pump, and the circulation circuit on the downstream side of the circulation pump. A second switching valve, a pressurized water supply means connected to the circulation circuit via the first switching valve, and a pressurized water discharge connected to the circulation circuit via the second switching valve. Using a bath water circulation device comprising: a means and an air supply means having a stop valve and connected to the circulation circuit between the first switching valve and the circulation pump, and using the circulation circuit Bath water circulation method for circulating bath water There,
After the pressurized water supplied from the pressurized water supply means to the circulation circuit is used as priming water to the circulation pump, the pressurized water discharge means is discharged out of the bathtub, and after the operation of the circulation pump is started, the first switching is performed. After switching the valve, confirming that the upstream side of the circulation circuit is connected to the bathtub, and that the bath water in the bathtub has started to be discharged from the pressurized water discharging means, the second switching valve is switched. The bath water circulation method comprises connecting the downstream side of the circulation circuit to the bathtub .

  As in the invention according to the first aspect, the present invention provides a first switching valve arranged in a circulation circuit for circulating the bath water in the bathtub by the circulation pump before the operation of the circulation pump is started. The main feature is that a pressurized water supply means capable of supplying priming water to the circulation pump is connected via

  In the bath water circulation apparatus of the present invention, since the priming water can be supplied into the circulation pump before the operation of the circulation pump, any kind of circulation pump can be used regardless of the height difference between the circulation pump and the bath water. Even so, stable operation is possible from the start of operation of the bath water circulation apparatus. In addition, vibration and noise generated by the circulation pump can be prevented, and the bath water can be circulated well in the circulation circuit.

  In the bath water circulation device of the present invention, before the operation of the circulation pump, that is, before the operation of the bath water circulation device can be started, the pressurized water supply means can supply priming water to the circulation pump to the circulation circuit. Waste products, scales and bacteria remaining in the circulation circuit can be completely discharged out of the circulation circuit and cleaned. Thereby, a clean bath water can always be ensured every time the operation of the bath water circulation device is started. In addition, since the dirt in the circulation circuit can be removed by the pressurized water supply means, it is possible to prevent the propagation of germs in the circulation circuit. Conventionally used filters, filters, sterilizers, and the like can be disposed in the circulation circuit.

In the bath water circulation device, as in the invention according to the first aspect , the circulation circuit and the pressurized water discharging means can be connected via the second switching valve arranged in the circulation circuit. The pressurized water supplied into the circulation circuit via the pressurized supply means and the pressurized water discharge means can be discharged out of the bathtub. Thereby, the bath water circulation device can always be used from the state in which the inside of the circulation circuit is washed, and clean bath water can be sufficiently secured as bath water for the bathtub.

In the bath water circulation device, as in the invention according to claim 1 , an air supply means can be connected to the circulation circuit. The air supply means can be provided with a stop valve. After supplying pressurized water from the pressurized water supply means to the circulation circuit and the pressurized water discharge means, the first switching valve is switched to stop the supply of pressurized water from the pressurized water supply means, and then the stop valve is opened. Compressed air supplied from an air supply source can be introduced into the circulation circuit and the pressurized water discharge means by the air supply means.

  Water in the circulation circuit can be drained by the compressed air introduced by the air supply means. For this reason, combined with the purification in the circulation circuit by the pressurized water, it is possible to completely remove all wastes, scales and germs remaining in the circulation circuit. Further, the inside of the circulation circuit can be dried by the introduced compressed air.

As at least one of the first switching valve and the second switching valve, a three-way switching valve can be used as in the invention according to claim 2 . The three-way switching valve can be freely switched to the pressurized water supply means side, the pressurized water discharge means side, and the circulation circuit side. Therefore, various operations such as initial operation, bath water circulation, and purification in the circulation pump can be performed rationally.

At least one of the three-way switching valve or the stop valve can be constituted by a valve that is automatically controlled as in the invention according to claim 3 . Although the operation of the three-way switching valve or the stop valve can be performed manually, each valve is switched by a signal from a detection means or a control unit by using, for example, an electromagnetic switching valve. Can be controlled automatically.

In the bath water circulation device of the present invention, as in the invention according to claim 4 , a carbon dioxide gas dissolver can be disposed in the circulation circuit, and a carbon dioxide gas supply means can be connected to the carbon dioxide gas dissolver. it can. Accordingly, before the operation of the circulation pump is started, the priming water can be supplied to the circulation circuit by the pressurized water supply means, so that the dirt accumulated in the carbon dioxide gas dissolver is completely removed from the circulation circuit. It can be discharged out of the system and cleaned. Carbon dioxide can be efficiently dissolved in warm water in the carbon dioxide dissolver, and a high concentration carbonate spring can be obtained.

In the bath water circulation apparatus of the present invention, as in the invention according to claim 5 , it is preferable that the circulation pump is disposed above the bathtub. When the operation of the circulation pump is stopped, the bath water in the circulation circuit can be drained by its own weight. After the operation of the bath water circulation apparatus is completed, water accumulated in the circulation pump and the circulation circuit can be reduced, and propagation of various germs can be suppressed. Thereby, the inside of a bathtub can be made into beautiful bath water.

The pressurized water is preferably tap water as in the invention according to claim 6 . When the pressurized water is tap water, existing water supply facilities can be used, and a pressurized water supply means having a simple structure can be obtained reasonably. In addition, the pressurized water can be easily supplied into the circulation circuit via the pressurized water supply means and the pressurized water discharge means. Further, the inside of the circulation circuit can be sterilized and cleaned cleanly by sodium hypochlorite contained in tap water.

As the circulation pump, it may be used centrifugal pump. This centrifugal pump is preferable compared to other pumps in terms of quietness, cost, size, and the like. Is a further the circulation pump is suitably a brushless pump. A brushless pump is preferable because the life of the pump is extended and noise and electromagnetic noise can be reduced.

More preferably, the circulation pump is particularly effective as a non-self-priming pump. When the operation of the circulation pump is stopped, the amount of water stored in the pump can be reduced, and generation of germs that propagate by the water accumulated in the pump can be suppressed.

The pressurized water circulation method of the present invention is carried out using the above bath water circulation device. As a typical method thereof, as in the invention according to claim 7 , before the operation of the circulation pump is started, the first switching valve and the second switching valve are respectively connected to the pressurized water supply means side and the pressurized water discharge. Switch to the means side. Pressurized water, which is priming water to the circulation pump, can be discharged from the pressurized water supply means to the pressurized water discharge means via the circulation circuit, and the pressurized water that has flowed into the pressurized water discharge means can be discharged out of the bathtub.

  Furthermore, after the operation of the circulation pump is started, the first switching valve is switched to the circulation circuit side, and it is confirmed that the bath water in the bathtub has started to be discharged from the pressurized water discharging means, and then the second The switching valve can be switched to the circulation circuit side.

  Prior to the start of the operation of the circulation pump, coupled with the fact that the pressurized water supply means can supply priming water to the circulation pump in the circulation circuit, Waste, scales and germs can be completely removed. For this reason, propagation of various bacteria can be effectively prevented, and when the bath water circulation device is not used, the inside of the circulation circuit can be kept dry.

Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings.
FIG. 1 is an overall explanatory view showing an example of a bath water circulation apparatus according to a first embodiment of the present invention. In the first embodiment, an example in which the bath water circulation device is used for a bathtub is given. However, the present invention is not limited to this, and for example, a circulating carbonate spring production device, a vortex bath device, and a water storage device. Or it can apply also to things other than a bathtub like water tanks, such as a tank for water supply.

  In FIG. 1, a bath water circulation device includes a circulation circuit that circulates hot water (bath water) in a bathtub 1 to the outside of the bathtub, and a circulation pump 4 that is interposed between a water supply line 2 and a drain line 3 in the circulation circuit. It is comprised by. Hot water in the bathtub 1 is sucked up by the circulation pump 4 and returned to the bathtub 1 through the water supply line 2 and the drainage line 3 from the prefilter 5 again. Since a filter, a sterilizer, a heater, etc. (not shown) can be disposed in the circulation circuit, the bath water circulation device is not limited to the illustrated example.

  The pre-filter 5 is for trapping large debris such as hair mixed in warm water and preventing contamination in the circulation circuit. In the first embodiment, the prefilter 5 is not necessarily provided in the water supply line 2. As the prefilter 5, a sponge, a wire mesh, a sintering agent, or the like can be used. The pore diameter of the prefilter 5 is preferably fine, but if it is too fine, the resistance increases. For this reason, the prefilter pore diameter is preferably several tens of μm to several hundreds of μm.

  According to the present invention, a pressurized water supply device that can supply priming water to the circulation pump 4 and start removing dirt in the circulation circuit before the operation of the circulation pump 4 is started. The main feature is that it is installed. In the first embodiment, a pressurized water supply means is connected via a first switching valve 6 arranged in the water supply line 2. Pressurized water discharge means is connected to the drain line 3 via a second switching valve 7. Further, in the illustrated example, an air supply means is connected between the first switching valve 6 and the circulation pump 4 in the water supply line 2. As the first and second switching valves 6 and 7, a three-way switching valve can be used.

  These circulation circuit, pressurized water supply means, pressurized water discharge means and air supply means constitute a bath water circulation device which is a characteristic part of the present invention. In the pressurized water supply means, pressurized water supplied from a pressurized water supply source (not shown) is supplied through the pressurized water supply line 8 to the water supply line 2 through the flow rate control valve 9, the electromagnetic valve 10, and the first switching valve 6. it can. In the pressurized water discharge means, the pressurized water supplied through the water supply line 2 can be discharged out of the bathtub through the circulation pump 4, the second switching valve 7, and the pressurized water discharge line 11.

  In the bath water circulation device, since the priming water can be supplied into the circulation pump 4 before the operation of the circulation pump 4, any kind of circulation is possible regardless of the height difference between the circulation pump 4 and the bath water. Even if it is a pump, the operation | movement of the circulation pump 4 stabilized from the operation start of the bath water circulation apparatus is attained. In addition, the circulating pump 4 can be idled or air can be sucked to prevent vibration and noise of the circulating pump 4 and to circulate clean bath water well in the circulating circuit. Will be able to.

  The circulation pump 4 is not particularly limited, and for example, a canned pump that is integrated with a pump and a motor and does not have a shaft seal portion, or a magnet pump that does not have a shaft seal portion by interlocking with a magnet can be used. Preferably, for example, a centrifugal pump can be used. The centrifugal pump is more preferable than other pumps in terms of quietness, cost, size, and the like.

  The circulation pump 4 is preferably a brushless pump. A brushless pump is preferable because the life of the pump is extended and noise and electromagnetic noise can be reduced. More preferably, the circulation pump 4 is particularly effective as a non-self-priming pump. It is possible to reduce the amount of water stored in the pump that is stored when the operation of the circulation pump 4 is stopped, and it is possible to suppress the generation of germs that propagate by the water accumulated in the pump. It is not preferable to always store water in the pump, for example, because it becomes a hotbed for propagation of various bacteria.

  In the bath water circulation device, it is preferable that the circulation pump 4 is disposed above the bathtub 1. When the operation of the circulation pump 4 is stopped, for example, the first switching valve 6 is switched to the circulation circuit side, and the second switching valve 7 is switched to the circulation circuit side or the pressurized water discharge line 11 side. Bath water can be drained by its own weight. It is possible to reduce the water accumulated in the circulation pump 4 and the circulation circuit after the operation of the bath water circulation device is completed, and it is possible to suppress the propagation of germs. Thereby, the inside of bathtub 1 can be made into a beautiful hot spring.

  Although the switching operation of the first and second switching valves 6 and 7 can be performed by an operator's manual operation, as each switching valve 6 and 7, for example, an electromagnetic switching valve can be used. The switching of each switching valve can be automatically controlled by connecting the electromagnetic switching valve to a detection means or a control unit (not shown). Note that each of the switching valves 6 and 7 can be replaced with two electromagnetic valves. Further, the opening and closing operation of the electromagnetic valve 10 can be performed by an operator's manual operation. However, like the first and second switching valves 6 and 7, by connecting to a detection means and a control unit (not shown). The opening and closing of the electromagnetic valve 10 can be automatically controlled.

  When the first switching valve 6 is switched from the water supply line 2 side to the pressurized water supply line 8 side, the water supply line 2 and the pressurized water supply line 8 can be connected. When the first switching valve 6 is switched to the pressurized water supply line 8 side, the pressurized water in the circulation circuit is discharged out of the bathtub by switching the second switching valve 7 to the pressurized water discharge line 11 side. Can do.

  The pressurized water that is the priming water to the circulation pump 4 may be any pressurized water, and is not particularly limited, but is preferably tap water. When the pressurized water is tap water, it becomes possible to use an existing water supply facility, and a pressurized water supply means having a simple structure can be obtained reasonably. Moreover, the pressurized water can be easily supplied anytime and anywhere into the circulation circuit via the pressurized water supply line 8 and the pressurized water discharge line 11. More preferably, tap water containing sodium hypochlorite is particularly effective. Since this tap water is clean water and has a sterilizing effect of sodium hypochlorite, the inside of the circulation circuit can be cleaned cleanly.

  In the case of using tap water that is a target of pressurized water, the supply speed into the circulation circuit varies depending on the tap water supply pressure. For this reason, it is preferable to install a flow control valve 9 in the pressurized water discharge line 11. Further, a vacuum source (not shown) can be connected to the pressurized water discharge line 11 to suck bath water or the like in the circulation circuit.

  Further, in the bath water circulation device, before the operation of the circulation pump 4 is started, that is, before the operation of the bath water circulation device is started, priming water to the circulation pump 4 is supplied to the circulation circuit by the pressurized water supply line 8. it can. For this reason, the waste water remaining in the circulation circuit collected before the start of the operation of the bath water circulation device, scales and germs can be completely discharged from the circulation circuit to be purified, and the bath water circulation A clean bath can always be ensured every time the device is started.

  In addition, since the dirt in the circulation circuit can be removed by the pressurized water supply line 8, it is possible to prevent the propagation of germs in the circulation circuit. Moreover, since the inside of the circulation circuit can be sterilized and disinfected, when the bath water circulation device is started to operate, there is residual water remaining in the circulation circuit with respect to clean bath water that is not exposed to the human body. It is possible to prevent contamination by mixing, and to ensure clean bath water.

  Further, when the bath water circulating apparatus is started to operate, if the pressurized water accumulated in the circulation circuit is returned to the bathtub 1 by opening the second switching valve 7, the pressurized water is mixed into the bath water or tap water is used. Therefore, it is preferable that the second switching valve 7 is opened and switched to the pressurized water discharge line 11 side. Thereby, the operation of bath water circulation can be performed in a clean circulation circuit.

  Further, an electromagnetic valve 12 as a stop valve can be arranged in the air supply line 13 of the air supply means. In the air supply line 13, compressed air supplied from an air supply source (not shown) can be introduced into the circulation circuit and the pressurized water discharge line 11. After supplying pressurized water from the pressurized water supply line 8 to the circulation circuit and the pressurized water discharge line 11, the first switching valve 6 is switched in a direction to stop the connection with the pressurized water supply line 8 side to supply the pressurized water. The supply of pressurized water from the line 11 is stopped.

  Then, by opening the electromagnetic valve 12 and introducing the compressed air into the circulation circuit and the pressurized water discharge line 11 through the air supply line 13, water can be drained from the circulation circuit. For this reason, coupled with purification in the circulation circuit by pressurized water, it is possible to completely remove all wastes, scales and germs remaining in the circulation circuit. Can be kept dry. For this reason, along with purification in the circulation circuit with pressurized water, it is possible to more effectively prevent the propagation of germs.

  The electromagnetic valve 12 of the air supply means can be connected in the vicinity of a water supply port arranged in the bathtub 1 in the circulation circuit. By providing the electromagnetic valve 12 in the vicinity of the water supply port of the bath water in the bathtub 1, it is possible to wash or dry a wide range in the circulation circuit. The opening / closing operation of the solenoid valve 12 can be performed manually by an operator, but the opening / closing operation of the solenoid valve 12 can be automatically controlled by connecting to a detection means or a control unit (not shown). Of course.

  FIG. 2 is an overall explanatory view showing an example of a circulating carbonated spring manufacturing apparatus provided with the bath water circulating apparatus of the present invention. In FIG. 2, substantially the same members as those in the first embodiment are given the same member names and symbols. Therefore, the detailed description regarding these members is omitted.

  In FIG. 2, a carbon dioxide gas dissolver 14 is arranged in a circulation circuit between the circulation pump 4 and the second switching valve 7. A carbon dioxide supply line 20 is connected to the carbon dioxide inlet of the carbon dioxide dissolver 14. Carbon dioxide gas is supplied from the carbon dioxide gas cylinder 15 through the carbon dioxide gas supply line 20, adjusted to a constant pressure by the pressure reducing valve 16, and adjusted by the flow rate control valve 17. An electromagnetic valve 18 that is a carbon dioxide gas shutoff valve is provided downstream of the flow rate control valve 17, and a check valve 19 is provided to prevent the backflow of carbon dioxide gas.

  By connecting the solenoid valve 18 to a detection means or a control unit (not shown) at the start of operation of the bath water circulation device, the solenoid valve 18 can be automatically controlled in a timely manner when necessary. The electromagnetic valve 18 can be selected and disposed on the carbon dioxide supply line 20 between the pressure reducing valve 16 and the carbon dioxide dissolver 14.

  The carbon dioxide gas is supplied to the carbon dioxide gas dissolver 14 through the carbon dioxide gas supply line 20 through the carbon dioxide gas cylinder 15, the pressure reducing valve 16, the flow rate control valve 17, the electromagnetic valve 18, and the check valve 19. Hot water in one bathtub 1 is sucked up by the circulation pump 4 and supplied into the carbon dioxide dissolver 14 through the prefilter 5. In the carbon dioxide dissolver 14, carbon dioxide is dissolved in warm water to produce a carbonated spring. The carbonated spring is returned from the carbon dioxide dissolver 14 into the bathtub 1 through the drain line 3 of the circulation circuit.

  Even in the second embodiment, as in the first embodiment, by providing the bath water circulation device, it is possible to ensure clean bath water without contaminating clean bath water. . In addition, carbon dioxide can be efficiently dissolved in warm water through a circulation circuit to obtain a high-concentration carbonated spring, and a beautiful hot spring can be bathed.

  The carbon dioxide dissolver 14 is not particularly limited. For example, a membrane-type carbon dioxide dissolver, a static mixer, a pressurized spray tank (carbo) configured by incorporating a membrane module in which a hollow fiber membrane is disposed. (Neter) can be used. The bath water circulation apparatus of the present invention can also be applied to a vortex bath apparatus conventionally used. Further, the present invention is not limited to the above-described embodiments, and naturally includes a technical range that can be easily changed by those skilled in the art from these embodiments.

  Hereinafter, more specific examples of the present invention will be described.

  A vortex bath was performed using the bath water circulating apparatus shown in FIG. The circulation pump 4 was a non-self-contained can pump. Before starting the operation of the bath water circulation device, the circulation circuit was cleaned. Before the operation of the circulation pump 4, the first and second switching valves 6 and 7 are switched to the pressurized water supply line 8 side and the pressurized water discharge line 11 side, respectively, and the pressurized water supply line 8, the first switching valve 6, and the water supply Tap water was supplied through line 2, circulation pump 4, drainage line 3, second switching valve 7, and pressurized water supply line 11 to the outside of the bathtub.

  After supplying tap water for about 1 minute, the first switching valve 6 was switched to the water supply line 2 side simultaneously with the operation of the circulation pump 4. The circulation pump 4 was able to start stably from the initial operation. Then, after confirming that warm water flowed out from the pressurized water discharge line 11, the 2nd switching valve 7 was switched to the drainage line 3 side. Without flowing cold tap water in the bathtub 1, the bath water in the bathtub 1 is passed through a circulation circuit including the water supply line 2, the first switching valve 6, the circulation pump 4, the second switching valve 7, and the drainage line 3. Was able to circulate. Dirt was not observed in the bath water before the person took a bath.

BRIEF DESCRIPTION OF THE DRAWINGS It is whole explanatory drawing which shows an example of the bath water circulation apparatus which is typical 1st Embodiment of this invention. It is whole explanatory drawing which shows an example of the circulation type carbonated spring manufacturing apparatus provided with the bath water circulation apparatus. It is whole explanatory drawing which shows an example of the conventional circulation type carbonated spring manufacturing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathtub 2 Water supply line 3 Drainage line 4 Circulation pump 5 Pre filter 6 1st switching valve 7 2nd switching valve 8 Pressurized water supply line 9 Flow control valve 10 Solenoid valve 11 Pressurized water discharge line 12 Solenoid valve 13 Air supply line 14 Carbonic acid Gas dissolver 15 Carbon dioxide cylinder 16 Pressure reducing valve 17 Flow control valve 18 Solenoid valve 19 Check valve 20 Carbon dioxide supply line

Claims (7)

A circulation circuit that circulates the bath water by temporarily taking out the bath water in the bathtub and returning it to the bathtub again;
Wherein the distribution in the circulation circuit, a circulation pump using centrifugal pumps, either of the brushless pumps or non-self-priming pump,
A first switching valve disposed on the circulation circuit upstream of the circulation pump;
A second switching valve disposed on the circulation circuit on the downstream side of the circulation pump;
A pressurized water supply means connected to the circulation circuit via the first switching valve;
Via the second switching valve, the pressurized water discharging means connected to the circulation circuit;
A bath water circulator comprising a stop valve and an air supply means connected to the circulation circuit between the first switching valve and the circulation pump . 2. The bath water circulation device according to claim 1 , wherein at least one of the first switching valve and the second switching valve is a three-way switching valve. The bath water circulation device according to claim 1 or 2, wherein at least one of the three-way switching valve or the stop valve is a valve that is automatically controlled. 4. The bath water circulation device according to claim 1 , wherein a carbon dioxide gas dissolver is disposed in the circulation circuit, and a carbon dioxide gas supply means is connected to the carbon dioxide gas dissolver. The said circulation pump is arrange | positioned above the said bathtub, and when the operation of the said circulation pump stops, the bath water in the said circulation circuit can drain water with dead weight, The one in any one of Claims 1-4 characterized by the above-mentioned. Bath water circulation device. 6. The bath water circulating apparatus according to claim 1 , wherein the pressurized water supplied through the pressurized water supply means is tap water. A circulation circuit that circulates the bath water by taking out the bath water in the bathtub once out of the bathtub and returning it to the bathtub again;
A circulation pump arranged in the circulation circuit, using a centrifugal pump, a brushless pump or a non-self-priming pump; and
A first switching valve disposed on the circulation circuit upstream of the circulation pump;
A second switching valve disposed on the circulation circuit on the downstream side of the circulation pump;
A pressurized water supply means connected to the circulation circuit via the first switching valve;
Via the second switching valve, the pressurized water discharging means connected to the circulation circuit;
A bath water circulation device having a stop valve and comprising an air supply means connected to the circulation circuit between the first switching valve and the circulation pump, and using the circulation circuit, A bath water circulation method for circulating
The pressurized water supplied from the pressurized water supply means to the circulation circuit is used as priming water to the circulation pump, and then discharged out of the bathtub from the pressurized water discharge means;
After the operation of the circulation pump is started, the first switching valve is switched, the upstream side of the circulation circuit is connected to the bathtub, and the bath water in the bathtub starts to be discharged from the pressurized water discharge means. After confirming this, the second switching valve is switched and the downstream side of the circulation circuit is connected to the bathtub .

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