JP2008045793A - Bath apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bath apparatus, suitably performing micro-bubble operation while preventing corrosion and damage of a heating part for reheating of bathtub water. <P>SOLUTION: This bath apparatus includes: a circulating passage 2 for circulating hot water in a bathtub 1; a micro-bubble generating part 3 provided with a gas dissolving part 3a for dissolving gas in hot water circulated in the circulating passage 2 and a bubble generating part 8 for generating micro-bubbles using water in which gas is dissolved; the heating part 4 for reheating of bathtub water, which heats the hot water circulated in the circulating passage 2; an operation control means 5 capable of performing a micro-bubble operation of circulating hot water in the circulating passage 2 in the state of dissolving gas in hot water by the gas dissolving part 3a and generating micro-bubbles in the bubble generating part 8 and a reheating operation of circulating hot water in the circulating passage 2 in the state of heating hot water in the heating part 4 for reheating of bathtub water; and a micro-bubble inflow preventing means 22 for preventing inflow of micro-bubbles to the heating part 4 for reheating of bathtub water on the upstream side from the heating part 4 for reheating of bathtub water in the hot water circulating direction of the circulating passage 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a circulation path for circulating hot water in a bathtub, a gas dissolving part for dissolving gas in hot water circulated in the circulation path, and a foaming part for generating fine bubbles using water in which the gas is dissolved. A fine bubble generating part provided with a heating part for reheating hot water circulated in the circulation path, and a gas dissolved in hot water at the gas dissolving part and generating fine bubbles at the foaming part Operation control capable of performing fine bubble operation for circulating hot water in the circulation path in a state of being heated, and chasing operation in which hot water is circulated in the circulation path in the state of heating of hot water in the heating section for tracking And a bath device provided with the means.

  The bath apparatus as described above can generate fine bubbles in the bathtub by the operation control means performing the fine bubble operation, and the operation control means performs the memorial operation so that the hot water in the bathtub can be generated. The temperature can be raised. Then, by generating fine bubbles in the bathtub, for example, it is possible to obtain a cleaning effect for removing dirt and a heat retaining effect after bathing, thereby improving the comfort of bathers.

  In the conventional bath apparatus described above, the gas dissolution unit includes an ejector that introduces air from the air introduction path into the hot water circulated in the circulation path by the suction action, and an additive that pressurizes and dissolves the introduced air in the hot water. It is configured with a pressure pump, the foaming part is composed of a decompression part that decompresses hot water in which air is dissolved and ejects it into the bathtub, and the heating part for remedy circulates in the circulation path by burning of the burner It is configured to include a heat exchanger for reheating that heats the hot and cold water (for example, see Patent Document 1).

Patent Document 1 discloses the following two bath apparatuses in which the positional relationship between the heat exchanger for remedy and the gas dissolving part in the circulation path is different.
The first bath device is a state in which the heat exchanger for remedy is located on the downstream side of the gas dissolving part in the hot water circulation direction of the circulation path, and the heat exchanger for remedy and the pressure reducing part that is the foaming part are They are arranged in parallel.
In the second bath device, the remedy heat exchanger and the gas dissolving part are arranged in series in a state where the remedy heat exchanger is located upstream of the gas dissolving part in the hot water circulation direction of the circulation path. Has been.

Japanese Patent No. 3289426

In the bath apparatus as described above, bubbles are likely to accumulate in a specific portion such as a bent portion or a connecting portion of a pipe that allows hot water to flow in the middle portion of the heat exchanger for remedy in the heating portion for remedy. When the gas flows into the heat exchanger for remedy, bubbles are repeatedly accumulated at the specific location.
And in a specific location, since stress is locally applied by the impact force etc. when a bubble collapses, there exists a possibility that corrosion may generate | occur | produce in a specific location. In addition, when hot water is heated by a heat exchanger for remembrance at a specific location, there is a risk that the specific location may be damaged due to locally high temperatures due to the remaining bubbles.

  From the above, in order to prevent corrosion and damage in the heat exchanger for remedy, it is necessary to prevent fine bubbles from flowing into the heat exchanger for remedy. However, in the conventional bath apparatus, there is a possibility that fine bubbles may flow into the heat exchanger for remembrance. If it demonstrates, in the said 1st bath apparatus, if an operation control means performs a memorial operation, the hot water in a bathtub will be circulated in a circulation path in the state which passes the heat exchanger for memorialization. Therefore, for example, if the chasing operation is performed when the microbubbles remain in the bathtub or the circulation path such as after performing the microbubble operation, the microbubbles flow into the chasing heat exchanger. Further, in the second bath apparatus, since the heat exchanger for remedy and the gas dissolving part are arranged in series, when the fine bubble operation is performed, the fine bubbles present in the bathtub or the circulation path are removed. It will flow into the heat exchanger for remembrance.

  The present invention has been made paying attention to such a point, and an object thereof is to provide a bath apparatus that can appropriately perform microbubble operation while preventing corrosion and damage of the heating unit for remedy. It is in.

In order to achieve this object, the first characteristic configuration of the bath apparatus according to the present invention includes a circulation path for circulating hot water in a bathtub, and a gas dissolution unit for dissolving gas in the hot water circulated in the circulation path, And a fine bubble generating part provided with a foaming part for generating fine bubbles using water in which gas is dissolved, a heating part for heating for heating hot water circulated in the circulation path, and the gas dissolving part. In a state where gas is dissolved in hot water and fine bubbles are generated in the foaming portion, microbubble operation for circulating hot water in the circulation path, and in the state where the hot water is heated in the heating unit for remedy In a bath apparatus provided with an operation control means capable of executing a memorial operation for circulating hot water in a circulation path,
A microbubble inflow preventing means for preventing the microbubbles from flowing into the remedy heating section is provided.

  The fine bubble inflow prevention means can prevent the fine bubbles from flowing into the remedy heating section. Therefore, when there is a possibility that fine bubbles may flow into the heating unit for remedy, the fine bubble inflow prevention means can prevent the fine bubbles from flowing into the heating unit for remedy, and corrosion of the heating unit for remedy And the bath apparatus which can perform a fine bubble operation appropriately can be provided, being able to prevent damage.

  The 2nd characteristic structure of the bath apparatus concerning this invention is the said gas melt | dissolution part being provided with a pressurization pump, and the said heating part for remedy is upstream from the said gas melt | dissolution part in the said hot water circulation direction. It is in the point where it is arranged.

Since the gas dissolving part can pressurize and dissolve the gas in hot water circulated in the circulation path by the pressure pump, the gas dissolving part can be accurately dissolved in the hot water and the foaming part can be accurately dissolved. It is possible to generate fine bubbles.
Due to the pressurization of the pressurizing pump, high-pressure hot water flows through the downstream side of the gas dissolving part in the hot water circulation direction. Therefore, a high strength enough to withstand high pressure is required downstream of the gas dissolving portion. However, since the remedy heating section is arranged upstream of the gas melting section in the hot water circulation direction, the strength required for the remedy heating section is not high, and the configuration is simplified and the cost is reduced. Can be achieved.

  A third characteristic configuration of the bath device according to the present invention is that the fine bubble inflow prevention means is connected to the circulation path in a state of bypassing the remedy heating unit, and the circulation path and the bypass. It is possible to switch between a supply state in which hot water circulated in the circulation path is supplied to the heating unit for tracking and a bypass state in which hot water circulated in the circulation path is supplied to the bypass path at a connection point with the path. Switching means for switching the switching means to a bypass state during the fine bubble operation and to switch the switching means to a supply state during the chasing operation. It is in the point comprised so that the action | operation of may be controlled.

When the switching means is switched to the bypass state, the hot water is circulated in the circulation path while passing through the bypass path, and the hot water does not pass through the reheating heater.
During the fine bubble operation, the operation control means switches the switching means to the bypass state, so that even if fine bubbles are present in the bathtub or the circulation path, the fine bubbles flow into the remedy heating section. Can be prevented.
During the chasing operation, since the operation control means switches the switching means to the supply state, the hot water in the bathtub is circulated in the circulation path in a state of passing through the heating section for the chasing, and the hot water in the bathtub is increased. The temperature can be accurately performed.
By the way, when there is a possibility that fine bubbles may flow into the heating unit for chasing, the operation control means can also switch the switching means to the bypass state, so that the inflow of fine bubbles into the chasing heating unit can be accurately performed. It can be prevented.

  According to a fourth characteristic configuration of the bath device according to the present invention, whether or not there is an instruction to start the chasing operation until the set time elapses after the micro-bubble inflow prevention means has finished the micro-bubble operation. Regardless of the point, the memorial operation is configured to be prohibited.

  After performing the fine bubble operation, there is a possibility that fine bubbles may remain in the bathtub or in the circulation path. When the chasing operation is performed at this time, the fine bubbles flow into the chasing heating unit. There is a fear. Therefore, the fine bubble inflow prevention means can prevent the fine bubbles from flowing into the remedy heating unit by prohibiting the execution of the remedy operation until the set time elapses after the completion of the fine bubble operation. . In other words, since the fine bubbles remaining in the bathtub and the circulation path disappear with time, the fine bubbles remaining in the bathtub and the circulation path when the set time elapses after the microbubble operation ends. Bubbles can be eliminated, and fine bubbles can be prevented from flowing into the reheating heater.

  According to a fifth characteristic configuration of the bath device according to the present invention, when there is a command to start the chasing operation until a set time elapses after the microbubble operation is finished, the hot water supply connected to the circulation path The hot water supply part which supplies warm water in a bathtub in the path exists in the point provided.

  As described in the fourth characteristic configuration above, in order to prevent the fine bubbles from flowing into the chasing heating unit, the chasing operation is prohibited until the set time elapses after the fine bubble operation is finished. Then, during that time, the temperature of the hot water in the bathtub cannot be increased. Therefore, when there is a hot water supply part that supplies hot water into the bathtub in the hot water supply supply path connected to the circulation path, and there is an instruction to start the memorial operation before the set time elapses after the fine bubble operation ends Instead of performing the memorial operation, it is possible to increase the temperature of the hot water in the bathtub by supplying hot water from the hot water supply section. Then, when the set time elapses after the fine bubble operation ends and the remaining fine bubbles disappear, the chasing operation can be executed. As described above, when the hot water in the bathtub is increased in temperature by performing the chasing operation, and there is a possibility that fine bubbles may flow into the chasing heating unit by performing the chasing operation, supply of hot water by the hot water supply unit Thus, the temperature of hot water in the bathtub can be increased. Therefore, it is possible to appropriately increase the temperature of the hot water in the bathtub while preventing the fine bubbles from flowing into the reheating heater.

  A sixth characteristic configuration of the bath device according to the present invention is that the fine bubble inflow preventing means is constituted by a fine bubble removing means for removing fine bubbles from the hot water flowing into the remedy heating section. .

  The fine bubble removing means is capable of removing the fine bubbles when the fine bubbles are present in the hot water flowing into the remedy heating unit, and thus accurately preventing the fine bubbles from flowing into the remedy heating unit. be able to. By providing this fine bubble removing means, it is possible to always remove the fine bubbles present in the hot water flowing into the remedy heating section, and to prevent the fine bubbles from flowing into the remedy heating section accurately and more accurately. It can be done reliably.

  A seventh characteristic configuration of the bath device according to the present invention is a removed gas supply that supplies a removed gas removed by the fine bubble removing means to a gas introduction path that introduces gas into the circulation path in the gas dissolving section. Means is provided.

  Since the gas introduction path introduces gas into the circulation path, a suction action is applied so as to introduce gas from the gas introduction path to the circulation path. Then, since the removal gas supply means supplies the removal gas removed by the fine bubble removal means to the gas introduction path, the removal gas also receives a suction action, and the removal gas supply means supplies the removal gas to the gas introduction path. Will promote the supply. Therefore, the removal of the fine bubbles by the fine bubble removing means can be promoted, and the prevention of the inflow of the fine bubbles into the reheating heater can be performed accurately and more reliably.

  An eighth characteristic configuration of the bath device according to the present invention is that the fine bubble inflow preventing means introduces a gas into the circulation path upstream of the pressure pump and the pressure pump in the hot water circulation direction. And it is in the point comprised by the gas vent valve which extracts gas from the hot water of the said circulation path in the downstream of the said pressurization pump of the said hot water circulation direction.

  When fine bubbles are present in the hot water flowing through the circulation path, if the gas is introduced into the circulation path through the gas introduction path, the gas and the fine bubbles are combined to form a large bubble. The coupling | bonding of this gas and a fine bubble can be accelerated | stimulated by the action | operation of a pressurization pump, and the fine bubble which existed in the hot water becomes a big bubble by passing a pressurization pump. And a gas vent valve can extract the big bubble which exists in the hot water which passed the pressurization pump. Therefore, by operating the pressure pump while introducing gas into the circulation path through the gas introduction path, the fine bubbles present in the hot water flowing through the circulation path can be taken as large bubbles and the large bubbles can be removed. It will be possible. Thus, by removing the fine bubbles as large bubbles, the hot water from which the fine bubbles have been removed can be allowed to flow into the remedy heating unit, and the inflow of the fine bubbles into the remedy heating unit can be prevented. it can.

  A ninth characteristic configuration of the bath device according to the present invention is that the gas dissolving part is configured to include the pressurizing pump, the gas introduction path, and the gas vent valve, and the heating unit for remedy is the hot water. It exists in the point arrange | positioned in the circulation direction downstream from the said gas melt | dissolution part and upstream from the said foaming part.

  Since the gas dissolving part includes a pressurizing pump, a gas introduction path, and a gas vent valve, the gas dissolving part can act as the fine bubble inflow preventing means described in the eighth characteristic configuration. Accordingly, the fine bubble inflow prevention means can also be used in the gas dissolving portion, and the configuration can be simplified. Further, the memorial heating part is arranged downstream of the gas dissolving part acting as a fine bubble inflow prevention means in the hot water circulation direction and upstream of the foaming part in the hot water circulation direction, so that the fine bubbles are removed. Hot water can be allowed to flow into the remedy heating section while being removed by the gas dissolving section. Therefore, by circulating hot water in the bathtub in a state of passing through the gas dissolving part, the heating part for commemoration, and the foaming part in order, it is possible to raise the temperature of the hot water in the bathtub, Can be generated.

An embodiment of a bath device according to the present invention will be described with reference to the drawings.
[First Embodiment]
The bath apparatus F in the first embodiment has a circulation path 2 that circulates hot and cold water in the bathtub 1, a gas dissolution unit 3a that dissolves air as gas in the hot water circulated in the circulation path 2, and the air is dissolved. Of the fine bubble generating part 3 provided with the pressure reducing valve 8 as the foaming part for generating fine bubbles using water, the heating part 4 for reheating hot water circulated in the circulation path 2, and the bath apparatus F And an operation control means 5 for controlling the operation.

  The circulation path 2 includes an outward path 2a for supplying hot water in the bathtub 1 to the gas dissolving portion 3a and a return path 2b for returning the hot water having passed through the pressure reducing valve 8 to the bathtub 1. The memorial heating section 4 is provided in the forward path 2 a of the circulation path 2, and is disposed upstream of the gas dissolving section 3 a in the hot water circulation direction of the circulation path 2.

  The gas dissolving section 3a pressurizes the gas introduction path 6 for introducing air into the circulation path 2, the hot water flowing through the circulation path 2, and dissolves the air introduced from the gas introduction path 6 into the pressurized hot water. A pressure pump 7 is provided. The pressure reducing valve 8 is configured to depressurize hot water in which air is dissolved to generate fine bubbles. The pressurizing pump 7 is constituted by, for example, a vortex pump that boosts the liquid sucked from the suction port by a centrifugal action accompanying the rotation of the impeller and discharges the liquid from the discharge port. Further, the pressurizing pump 7 has three modes of a low pressure mode, an intermediate pressure mode, and a high pressure mode capable of adjusting the pressure of the fluid to be discharged, and operates in any one of the three modes selected. It is configured as follows.

The gas introduction path 6 is provided with an air flow rate adjusting valve 9, an air pump 10, and an air check valve 11 for adjusting the air flow rate in order from the upstream side.
The pressurizing pump 7 is provided with a separation unit 12 that separates undissolved air from hot water discharged from a discharge port, and an air vent valve 13 that exhausts air separated by the separation unit 12. The pressurizing pump 7 is also provided with an airtight test valve 14 in order to prevent air from leaking from the air vent valve 13 when performing an airtight test on the device.
In the circulation path 2 between the pressurizing pump 7 and the pressure reducing valve 8, a pressure sensor 15 for detecting the pressure of hot water is provided. A pressure reducing on / off valve 17 that opens and closes the pressure reducing bypass path 16 is provided in the pressure reducing bypass path 16 connected to the circulation path 2 in a state of bypassing the pressure reducing valve 8.

  The remedy heating unit 4 includes a remedy heat exchanger 19 that heats hot and cold water by combustion of the remedy burner 18. A temperature sensor 20 that detects the temperature of hot water that has passed through the heating unit for tracking 4 is provided at the outlet of the heating unit for tracking 4. The operation control means 5 is configured to be able to change the temperature of hot water heated by the heat exchanger 19 for remedy by controlling the combustion of the remedy burner 18.

In the hot water circulation direction of the circulation path 2, there is provided a fine bubble removing unit 21 as a fine bubble removing means for removing fine bubbles from the hot water flowing into the follower heating unit 4 on the upstream side of the follower heating unit 4. It has been. The fine bubble removing unit 21 is configured as a fine bubble inflow prevention unit 22 that prevents the fine bubbles from flowing into the remedy heating unit 4.
The fine bubble removing unit 21 includes a narrow tube channel 23 formed by a thin tube having a small channel area, a gas-liquid separation unit 24 for separating gas from hot water flowing through the narrow tube channel 23, and a gas-liquid A fine bubble relief valve 25 for exhausting the gas separated by the separation unit 24 is provided.
When the hot water containing the fine bubbles flows through the narrow pipe channel 23, the fine bubbles are combined to form large bubbles, and the bubbles are separated from the hot water by the gas-liquid separation unit 24 and exhausted by the fine bubble release valve 25. By doing so, the hot water containing many gas, such as a fine bubble, is removed from the hot water flowing into the memorial heating part 4.

Hot water containing a large amount of removal gas such as fine bubbles exhausted by the fine bubble removal valve 25 is not exhausted to the outside, but removed gas supply as removal gas supply means for supplying the removed gas to the gas introduction path 6. A path 26 is provided. The removal gas supply passage 26 is provided with a removal gas check valve 27.
In this way, the hot water containing a large amount of the removed gas removed by the fine bubble removing unit 21 can be introduced into the hot water circulating through the circulation path 2 through the gas introduction path 6.

  The circulation path 2 is provided with a removal bypass path 28 that bypasses the fine bubble removing unit 21. A removal opening / closing valve 29 for opening and closing the removal bypass passage 28 is provided.

A hot water supply section 31 is provided for supplying hot water into the bathtub 1 through a hot water supply path 30 connected to the circulation path 2. The hot water supply unit 31 includes a hot water supply heating unit 32 that heats water to be supplied, and supplies hot water heated by the hot water supply heating unit 32 to the circulation path 2 through the hot water supply supply channel 30. 1 is configured to be fed into the inside.
The hot water supply path 30 is branched into a first hot water supply path 30a and a second hot water supply path 30b in the middle thereof. The first hot water supply passage 30 a is connected to the downstream side in the hot water circulation direction from the pressure reducing valve 8 in the return path 2 b of the circulation path 2. A first hot water supply valve 33 is provided to open and close the first hot water supply path 30a. The supply path 30b for the second hot water supply is connected between the reheating heating section 4 and the gas dissolving section 3a that are upstream of the pressurizing pump 7 in the hot water circulation direction in the forward path 2a of the circulation path 2. . A water level sensor 34 that detects the level of hot water in the bathtub 1 is provided in the second hot water supply path 30b.
Further, in the hot water supply channel 30, a second hot water supply valve 35 for opening and closing the hot water supply channel 30, upstream of the branching point between the first hot water supply channel 30a and the second hot water supply channel 30b, A stop valve 36 is provided.

  Although not shown, the hot water supply heating unit 32 includes a hot water supply heat exchanger that heats the hot water by combustion of the hot water burner, like the heating unit 4 for reheating. And the operation control means 5 is comprised so that the temperature of the hot water heated with the heat exchanger for hot water supply can be changed by controlling combustion of the burner for hot water supply.

  The operation control means 5 is configured to receive detection information from the pressure sensor 15, detection information from the temperature sensor 20, and detection information from the water level sensor 34. The operation control means 5 includes an operating state of the pressurizing pump 7, an operating state of the pressure reducing valve 8, an operating state of the air flow rate adjusting valve 9, an operating state of the air pump 10, an operating state of the pressure reducing on / off valve 17, By controlling the combustion of the burner 18, the operating state of the on-off valve 29 for removal, the combustion of the hot water burner in the heating unit 32 for hot water supply, the operating state of the first hot water valve 33, and the operating state of the second hot water valve 35, F is configured to control the operation of F.

The operation control means 5 is for fine bubble operation in which hot water is circulated in the circulation path 2 in a state where air is dissolved in hot water in the gas dissolving part 3a and fine bubbles are generated in the pressure reducing valve 8. A chasing operation in which hot water is circulated in the circulation path 2 while the hot water is heated by the heating unit 4 is configured to be executable.
In addition, when the operation control means 5 switches from the micro bubble operation to the chasing operation and performs the chasing operation until a set time (for example, 5 minutes) elapses after the micro bubble operation is finished, It is configured to perform a chasing operation for preventing the inflow of fine bubbles in which hot water is circulated in the circulation path 2 while hot water is heated by the memorial heating unit 4 while preventing inflow to the memorial heating unit 4. Has been.

The operation in the fine bubble operation will be described.
The operation control means 5 is configured to start the fine bubble operation when there is an instruction to start the fine bubble operation, and to end the fine bubble operation when there is an instruction to end the fine bubble operation. Incidentally, the start command and the end command of the fine bubble operation are configured to be commanded by, for example, an artificial operation type operation unit.

  As shown by the white arrow in FIG. 1, the operation control means 5 closes the removal on-off valve 29, opens the pressure reducing valve 8 in a fully open state, and closes the pressure reducing on-off valve 17 in a closed state. It is configured to operate in the mode so that hot water in the bathtub 1 is circulated in the circulation path 2 in a state in which the fine bubble removing unit 21, the heating unit 4 for pursuit, the gas dissolving unit 3a, and the pressure reducing valve 8 are passed in this order. Has been. At this time, the remedy burner 18 of the remedy heating unit 4 is extinguished. The operation control means 5 introduces air into the circulation path 2 through the gas introduction path 6 by operating the air pump 10 with the air flow rate adjusting valve 9 in the open state, as indicated by the black arrow in FIG. The operation state of the air flow rate adjustment valve 9, the operation state of the air pump 10, and the operation state of the pressurization pump 7 are controlled so that the dissolved oxygen concentration and the flow rate in the pressurization pump 7 are in the target state. Has been. Further, the operation control means 5 is configured to control the operating state of the pressure reducing valve 8 in a form in which the pressure reducing valve 8 is shifted to the closed state so that the pressure detected by the pressure sensor 15 becomes the set pressure.

  Since the fine bubbles are removed from the hot water flowing into the remedy heat exchanger 19 by the fine bubble removal unit 21, the fine bubbles can be prevented from flowing into the remedy heat exchanger 19. Then, the removed gas removed by the fine bubble removing unit 21 is supplied to the gas introduction path 6 by the removal gas supply path 26 and is circulated by the gas introduction path 6 as shown by the black arrows in FIG. 2 is introduced. At this time, since the air pump 10 is operated, the gas introduction path 6 is in a reduced pressure state, and a suction action is generated with respect to the removed gas supply path 26. Therefore, since the removal of the fine bubbles in the fine bubble removing unit 21 can be promoted, the fine bubbles can be effectively removed in the fine bubble removing unit 21, and the fine bubbles are used as a heat exchanger for remedy. Inflow to 19 can be prevented more accurately.

The operation in the memorial operation will be described.
The operation control means 5 is configured to start a chasing operation when there is an instruction to start a chasing operation, and to quit the chasing operation when there is an instruction to end the chasing operation. Incidentally, the start command and the end command of the memorial operation are also configured to be commanded by, for example, an artificial operation type operation unit.

  As shown by the white arrow in FIG. 2, the operation control means 5 opens the removal on-off valve 29, opens the pressure reducing valve 8, opens the pressure reducing on / off valve 17, and opens the pressure pump 7 at a low pressure. The hot water in the bathtub 1 is circulated in the circulation path 2 in a state where it is operated in the mode and passes through the heating unit for remedy 4 and the gas dissolving unit 3a in this order. Then, the operation control means 5 starts combustion of the remedy burner 18 and controls the combustion of the remedy burner 18 so that the temperature detected by the temperature sensor 20 becomes the set temperature for remedy. It is configured as follows. At this time, the air flow rate adjusting valve 9 is in a fully closed state, and the air pump 10 is in a stopped state.

The operation in the chasing operation for preventing inflow of fine bubbles will be described.
The operation control means 5 starts the chasing operation for preventing the inflow of fine bubbles when there is a memorial operation start command until a set time (for example, 5 minutes) elapses after the microbubble operation is finished. When there is an instruction to end the chasing operation, the chasing operation for preventing the inflow of fine bubbles is terminated.

As shown by the white arrow in FIG. 3, the operation control means 5 closes the pressurizing pump 7 with the removal on-off valve 29 closed, the pressure reducing valve 8 fully opened, and the pressure reducing on-off valve 17 opened. It is configured to circulate hot water in the bathtub 1 in the circulation path 2 while operating in the pressure mode and passing through the fine bubble removing unit 21, the heating unit 4 for pursuit, and the gas dissolving unit 3a in this order. . Then, the operation control means 5 starts combustion of the remedy burner 18 and controls the combustion of the remedy burner 18 so that the temperature detected by the temperature sensor 20 becomes the set temperature for remedy. It is configured as follows. At this time, the operation control means 5 is configured to operate the air pump 10 with the air flow rate adjustment valve 9 fully closed.
In the hot water flowing into the remedy heat exchanger 19, the fine bubbles are removed by the fine bubble removing unit 21 in the same manner as in the fine bubble operation, so that the fine bubbles flow into the remedy heat exchanger 19. Can be prevented. Then, the removed gas removed by the fine bubble removing unit 21 is supplied to the gas introduction path 6 by the removal gas supply path 26 and is circulated by the gas introduction path 6 as shown by the black arrows in FIG. 2 is introduced. At this time, the operation of the air pump 10 can promote the removal of the fine bubbles in the fine bubble removing unit 21, and can more accurately prevent the fine bubbles from flowing into the remedy heat exchanger 19.

The operation when switching from the chasing operation to the fine bubble operation will be described based on the time chart of FIG. Incidentally, if there is a command to start the fine bubble operation during the chasing operation, the operation is switched from the chasing operation to the fine bubble operation.
During the chasing operation, the operation control means 5 burns the chasing burner 18 to open the removal on-off valve 29, open the pressure reducing valve 8 fully, and open the pressure reducing on-off valve 17 to pressurize. The pump 7 is operated in the low pressure mode. Thereafter, when a command to start the fine bubble operation is instructed, the operation control means 5 stops the combustion of the remedy burner 18 and ends the remedy operation, but the temperature detected by the temperature sensor 20 is the set temperature for switching. The fine bubble operation is not performed until the temperature drops to (for example, 45 ° C.). When the temperature detected by the temperature sensor 20 falls to the switching set temperature (for example, 45 ° C.), the operation control means 5 switches the removal on-off valve 29 to the closed state and starts the fine bubble operation. Then, the operation control means 5 controls the operating state of the pressure reducing valve 8 in a form in which the pressure reducing on / off valve 17 is closed, the pressure pump 7 is operated in the high pressure mode, and the pressure reducing valve 8 is shifted to the closed state. Then, the air pump 10 is operated and the air flow rate adjusting valve 9 is opened to control its operating state.

The operation when switching from the fine bubble operation to the follow-up operation for preventing fine bubble inflow will be described based on the time chart of FIG. By the way, if there is a command to start the chasing operation during the micro bubble operation, the micro bubble operation is switched to the chasing operation for preventing the micro bubble inflow.
The operation control means 5 operates the pressurizing pump 7 in the high-pressure mode with the removal on-off valve 29 closed and the decompression on-off valve 17 closed in the fine bubble operation. After that, when the start command for the memorial operation is instructed, the operation control means 5 opens the air flow rate adjusting valve 9 while keeping the removal on-off valve 29 closed and operating the air pump 10. The operation state is switched from the controlled state to the fully closed state, the fine bubble operation is terminated, and the follow-up operation for preventing the fine bubble inflow is started. Then, the operation control means 5 switches the pressure reducing valve 8 to the fully open state, switches the pressure reducing on-off valve 17 to the open state, operates the pressure pump 7 in the intermediate pressure mode, and burns the remedy burner 18.

The operation control means 5 performs a hot water supply operation for supplying hot water into the bathtub 1 through the hot water supply passage 30 and the circulation passage 2 in addition to the fine bubble operation, the chasing operation, and the chasing operation for preventing the inflow of fine bubbles. Configured to be executable.
In this hot water supply operation, the operation control means 5 first opens the second hot water supply valve 35 and supplies a small amount of hot water to the circulation path 2 and the pressurizing pump 7 through the second hot water supply path 30b. The warm water is used as the priming water for the pressure pump 7. Incidentally, it is desirable to install the connection part of the 2nd hot water supply path 30b and the circulation path 2 above the pressurizing pump 7.
Then, the operation control means 5 opens the first hot water supply valve 33 and the second hot water supply valve 35 to enter the bathtub 1 from the first hot water supply path 30a and the second hot water supply path 30b through the circulation path 2. It is configured to supply hot water. The operation control means 5 continues the hot water supply operation until the detected water level of the water level sensor 34 reaches the set water level, and when the detected water level of the water level sensor 34 reaches the set water level, the first hot water supply valve 33 and the second hot water supply valve. The hot water supply operation is terminated by closing 35 and the hot water filling to the bathtub 1 is performed.

[Second Embodiment]
This 2nd Embodiment shows another embodiment of the fine bubble inflow prevention means 22 in the said 1st Embodiment. Hereinafter, based on FIGS. 6-9, the bath apparatus F in 2nd Embodiment is demonstrated. The description of the same configuration as in the first embodiment is omitted.

As shown in FIGS. 6 and 7, the forward path 2 a of the circulation path 2 is configured to supply hot water in the bathtub 1 to the reheating heater 4, and the return path 2 b of the circulation path 2 is the additional path 2 b. It is comprised so that hot water may be returned in the bathtub 1 from the heating part 4 for firewood. In the forward path 2 a of the circulation path 2, a remedy pump 37 for circulating hot water in the bathtub 1 in the circulation path 2 is provided.
In addition, a bypass bypass path 38 is provided as a bypass path connected to the circulation path 2 in a state in which the heater for heating 4 is bypassed. The upstream end of the memorial bypass path 38 is connected to the upstream side in the hot water circulation direction from the memorial pump 38 in the forward path 2 a of the circulation path 2, and the downstream end of the memorial bypass path 38. The part is connected downstream of the temperature sensor 20 in the hot water circulation direction in the return path 2 b of the circulation path 2. In addition, the gas bypass 3 is provided with the gas dissolving part 3a and the pressure reducing valve 8 in the path, supplying hot water from the circulation path 2 to the gas dissolving part 3a and passing through the pressure reducing valve 8. Is returned to the circulation path 2.

At the connection point between the upstream end of the bypass path 38 and the circulation path 2, a supply state in which hot water from the outward path 2 a of the circulation path 2 is supplied to the heating section 4 for the circulation path 2 and an outbound path 2 a of the circulation path 2 are provided. There is provided a first three-way valve 39 which can be switched to a bypass state in which hot water is supplied to the bypass passage 38 for remedy.
At the connection point between the downstream end of the bypass passage 38 and the circulation path 2, there is a supply return state in which the hot water passing through the heating section 4 is returned to the bathtub 1 through the return path 2 b of the circulation path 2. A second three-way valve 40 is provided that can be switched to a bypass return state in which the hot water passing through the bypass passage 38 is returned to the bathtub 1 through the return path 2b of the circulation path 2.
The first three-way valve 39 and the second three-way valve 40 constitute a switching means, and the fine bubble inflow preventing means 22 is constituted by a bypass passage 38, a first three-way valve 39, and a second three-way valve 40. In addition, the fine bubbles are prevented from flowing into the chasing heating unit 4 upstream of the chasing heating unit 4 in the hot water circulation direction of the circulation path 2.

  The operation control means 5 switches the first three-way valve 39 to the bypass state and the second three-way valve 40 to the bypass return state during the fine bubble operation, and sets the first three-way valve 39 to the supply state during the chasing operation. The operation of the first three-way valve 39 and the second three-way valve 40 is controlled to switch the second three-way valve 40 to the supply return state.

The operation in the fine bubble operation will be described.
The operation control means 5 operates the pressurizing pump 7 with the first three-way valve 39 in the bypass state and the second three-way valve 40 in the bypass return state as shown by the white arrow in FIG. The hot water in the bathtub 1 is circulated in the circulation path 2 and the bypass path 38 for remedy while the part 3a and the pressure reducing valve 8 are passed. Then, the operation control means 5 introduces air into the circulation path 2 through the gas introduction path 6 by operating the air pump 10 with the air flow rate adjusting valve 9 in the open state, as indicated by the black arrow in FIG. The operation state of the air flow rate adjustment valve 9, the operation state of the air pump 10, and the operation state of the pressurization pump 7 are controlled so that the dissolved oxygen concentration and the flow rate in the pressurization pump 7 are in the target state. Has been. Further, the operation control means 5 is configured to control the operating state of the pressure reducing valve 8 in a form in which the pressure reducing valve 8 is shifted to the closed state so that the pressure detected by the pressure sensor 15 becomes the set pressure. At this time, the chasing pump 37 is stopped, and the chasing burner 18 of the chasing heating unit 4 is extinguished.
In this fine bubble operation, since the inflow of hot water into the remedy heat exchanger 19 is prevented, the fine bubbles can be prevented from flowing into the remedy heat exchanger 19.

The operation in the memorial operation will be described.
The operation control means 5 operates the remedy pump 37 with the first three-way valve 39 in the supply state and the second three-way valve 40 in the supply return state, as indicated by white arrows in FIG. The hot water in the bathtub 1 is circulated through the circulation path 2 in a state where the heating unit 4 for firewood is passed. Then, the operation control means 5 starts combustion of the remedy burner 18 and controls the combustion of the remedy burner 18 so that the temperature detected by the temperature sensor 20 becomes the set temperature for remedy. It is configured as follows. At this time, the air flow rate adjusting valve 9 is fully closed, and the pressurizing pump 7 and the air pump 10 are stopped.

The operation control means 5 performs the memorial operation until a set time (for example, 5 minutes) elapses after the fine bubble operation is finished, regardless of whether there is a command to start the memorial operation. Configured to prohibit.
After completion of the microbubble operation, there is a possibility that microbubbles may remain in the bathtub 1 or the circulation path 2, so the set time (for example, 5 minutes) until the microbubbles disappear disappears. Prohibit operation. In this way, the fine bubbles are prevented from flowing into the tracking heat exchanger 19.

The operation when switching from the chasing operation to the fine bubble operation will be described based on the time chart of FIG.
The operation control means 5 operates the remedy pump 37 by combusting the remedy burner 18 and setting the first three-way valve 39 to the supply state and the second three-way valve 40 to the supply return state during the remedy operation. I am letting. Thereafter, when a command to start the fine bubble operation is instructed, the operation control means 5 stops the combustion of the remedy burner 18 and ends the remedy operation, but the temperature detected by the temperature sensor 20 is the set temperature for switching. The fine bubble operation is not performed until the temperature drops to (for example, 45 ° C.). When the temperature detected by the temperature sensor 20 is lowered to the switching set temperature (for example, 45 ° C.), the operation control means 5 stops the operation of the chasing pump 37 and starts the fine bubble operation. Then, the operation control means 5 switches the first three-way valve 39 to the bypass state and switches the second three-way valve 40 to the bypass return state, operates the pressurizing pump 7, and reduces the pressure reducing valve 8 to the closed state. The operating state of the valve 8 is controlled, the air pump 10 is operated, and the air flow rate adjusting valve 9 is opened to control the operating state.

The operation when switching from the fine bubble operation to the chasing operation will be described based on the time chart of FIG.
The operation control means 5 operates the pressurizing pump 7 and the air pump 10 with the first three-way valve 39 in the bypass state and the second three-way valve 40 in the bypass return state, and the air flow rate adjustment valve during the fine bubble operation. The operation state is controlled by opening 9. Thereafter, when the start command of the memorial operation is instructed, the operation control means 5 stops the operation of the air pump 10, switches the air flow rate adjusting valve 9 to the fully closed state, switches the pressure reducing valve 8 to the fully opened state, and pressurizes. The pump 7 is stopped and the fine bubble operation is finished. And the operation control means 5 keeps the state which complete | finished the fine bubble operation, and prohibits execution of a chasing operation until the set time (for example, 5 minutes) after completion | finish of fine bubble operation passes. The operation control means 5 switches the first three-way valve 39 to the supply state and the second three-way valve 40 to the supply return state when a set time (for example, 5 minutes) has elapsed after the end of the fine bubble operation. To start. Then, the operation control means 5 operates the remedy pump 37 to burn the remedy burner 18.

As described above, the operation control means 5 prohibits the execution of the memorial operation until a set time (for example, 5 minutes) after the end of the fine bubble operation elapses. Until (for example, 5 minutes) elapses, the temperature of the hot water in the bathtub 1 cannot be increased.
Therefore, as shown in FIG. 6 and FIG. 7, if there is a memorial operation start command until a set time (for example, 5 minutes) elapses after the fine bubble operation ends, the circuit is connected to the circulation path 2. A hot water supply section 31 for supplying hot water into the bathtub 1 is provided in the hot water supply passage 30.
The first hot water supply path 30 a of the hot water supply path 30 is connected to the downstream side in the hot water circulation direction from the heat exchanger 19 for reheating in the circulation path 2. The second hot water supply path 30 b of the hot water supply path 30 is connected between the remedy pump 37 and the remedy heat exchanger 19 in the circulation path 2.
Then, when there is a memorial operation start command until a set time (for example, 5 minutes) elapses after the microbubble operation ends, the operation control means 5 causes the hot water supply section 31 to circulate and circulate The hot water supply operation which supplies warm water in the bathtub 1 in the path 2 is performed, and the hot water in the bathtub 1 is heated. Incidentally, the operation control means 5 is configured to switch from the hot water supply operation to the memorial operation when a set time (for example, 5 minutes) has elapsed after the end of the fine bubble operation during the hot water supply operation.

[Third Embodiment]
This third embodiment shows another embodiment of the fine bubble inflow preventing means 22 in the first embodiment. Hereinafter, based on FIG.10 and FIG.11, the bath apparatus F in 3rd Embodiment is demonstrated. The description of the same configuration as in the first embodiment is omitted.

As shown in FIGS. 10 and 11, the forward path 2 a of the circulation path 2 is configured to supply hot water in the bathtub 1 to the gas dissolving section 3 a through the heating section 4 for circulation and circulation. The return path 2 b of the path 2 is configured to return hot water that has passed through the pressure reducing valve 8 or the pressure reducing on-off valve 17 into the bathtub 1.
In addition, a bypass bypass path 38 is provided as a bypass path connected to the circulation path 2 in a state in which the heater for heating 4 is bypassed. An upstream end of the bypass passage 38 is connected to the upstream side 2a of the circulation path 2 in the hot water circulation direction from the heat exchanger 19 and downstream of the bypass bypass path 38. The side end portion is connected to the downstream side in the hot water circulation direction with respect to the temperature sensor 20 in the forward path 2 a of the circulation path 2. And the bypass bypass path 38 is configured to supply hot water from the circulation path 2 to the gas melting section 3a by bypassing the heater heat exchanger 19.

At the connection point between the upstream end of the bypass path 38 and the circulation path 2, a supply state in which hot water from the outward path 2 a of the circulation path 2 is supplied to the heating section 4 for the circulation path 2 and an outbound path 2 a of the circulation path 2 are provided. There is provided a first three-way valve 39 which can be switched to a bypass state in which hot water is supplied to the bypass passage 38 for remedy.
The first three-way valve 39 constitutes a switching means, and the fine bubble inflow prevention means 22 is constituted by the remedy bypass path 38 and the first three-way valve 39, and is used for remedy in the hot water circulation direction of the circulation path 2. The upstream of the heating unit 4 prevents the fine bubbles from flowing into the tracking heating unit 4.

  The operation control means 5 switches the first three-way valve 39 to the bypass state during the fine bubble operation, and operates the first three-way valve 39 to switch the first three-way valve 39 to the supply state during the memorial operation. Configured to control.

The operation in the fine bubble operation will be described.
As shown by the white arrow in FIG. 10, the operation control means 5 sets the first three-way valve 39 in a bypass state, operates the pressurizing pump 7, and passes the gas dissolving part 3a and the pressure reducing valve 8 in the bypassed state. The hot water in the bathtub 1 is circulated in the circulation path 2 and the memorial bypass path 38. Then, the operation control means 5 introduces air into the circulation path 2 through the gas introduction path 6 by operating the air pump 10 with the air flow rate adjusting valve 9 in the open state, as indicated by the black arrow in FIG. The operation state of the air flow rate adjustment valve 9, the operation state of the air pump 10, and the operation state of the pressurization pump 7 are controlled so that the dissolved oxygen concentration and the flow rate in the pressurization pump 7 are in the target state. Has been. Further, the operation control means 5 is configured to control the operating state of the pressure reducing valve 8 in a form in which the pressure reducing valve 8 is shifted to the closed state so that the pressure detected by the pressure sensor 15 becomes the set pressure. At this time, the remedy burner 18 of the remedy heating unit 4 is extinguished.
In this fine bubble operation, since the inflow of hot water into the remedy heat exchanger 19 is prevented, the fine bubbles can be prevented from flowing into the remedy heat exchanger 19.

The operation in the memorial operation will be described.
As shown by the white arrow in FIG. 11, the operation control means 5 operates the pressurizing pump 7 with the first three-way valve 39 in the supply state, and in this order, the heating unit for remedy 4 and the gas dissolving unit 3a. It is comprised so that the hot water in the bathtub 1 may be circulated in the circulation path 2 in the state made to pass. Then, the operation control means 5 starts combustion of the remedy burner 18 and controls the combustion of the remedy burner 18 so that the temperature detected by the temperature sensor 20 becomes the set temperature for remedy. It is configured as follows. At this time, the air flow rate adjusting valve 9 is in a fully closed state, and the air pump 10 is in a stopped state.

In the same manner as in the second embodiment, the operation control means 5 determines whether or not there is a memorial operation start command until a set time (for example, 5 minutes) elapses after the microbubble operation ends. Regardless, it is configured to prohibit memorial operation.
The operation when the operation control unit 5 switches from the fine bubble operation to the chasing operation and the operation when the chasing operation is switched to the micro bubble operation are also the same as those in the second embodiment. Omitted. When switching from the chasing operation to the fine bubble operation, when the temperature detected by the temperature sensor 20 drops to the switching setting temperature (for example, 45 ° C.) after the chasing operation is finished, the micro bubble operation is started. When switching from micro bubble operation to chasing operation, execution of chasing operation is prohibited until the set time (for example, 5 minutes) has elapsed after micro bubble operation is terminated, and setting is made after micro bubble operation is terminated. When the time (for example, 5 minutes) elapses, the memorial operation is executed.

  Further, the case where there is an instruction to start the memorial operation after a set time (for example, 5 minutes) elapses after the fine bubble operation is finished is the same as in the second embodiment, and the operation control means 5, when there is a memorial operation start command until a set time (for example, 5 minutes) elapses after the microbubble operation is finished, the hot water supply operation is executed to increase the temperature of the hot water in the bathtub 1. Do.

[Fourth Embodiment]
The fourth embodiment shows another embodiment of the fine bubble inflow preventing means 22 in the first embodiment. Hereinafter, based on FIGS. 12-16, the bath apparatus F in 4th Embodiment is demonstrated. The description of the same configuration as in the first embodiment is omitted.

As shown in FIGS. 12 to 14, the forward path 2 a of the circulation path 2 is configured to supply the hot water in the bathtub 1 to the remedy heating section 4 in a state of passing through the gas dissolving section 3 a, and The return path 2 b of the circulation path 2 is configured to return hot water from the remedy heating unit 4 into the bathtub 1. As described above, the reheating heater 4 is disposed downstream of the gas dissolving part 3 a and upstream of the pressure reducing valve 8 in the hot water circulation direction of the circulation path 2.
A first open / close valve 41 is provided on the upstream path 2a of the circulation path 2 on the upstream side of the reheating heater 4 in the hot water circulation direction. And the 1st bypass path 42 connected to the circulation path 2 in the state which bypasses the heating part 4 for remedy is provided. A second opening / closing valve 43 is provided in the first bypass passage 42.

The fine bubble inflow prevention means 22 includes a pressure pump 7, a gas introduction path 6 for introducing gas into the circulation path 2 upstream of the pressure pump 7 in the hot water circulation direction, and a pressure pump 7 in the hot water circulation direction. Further, it is constituted by an air vent valve 13 as a gas vent valve that vents gas from the hot water of the circulation path 2 on the further downstream side and on the upstream side of the reheating heater 4. Incidentally, the air vent valve 13 is configured, for example, as a float type that detects the water level of the separation unit 12 and opens the valve when the water level reaches the set water level to discharge the air stored above the separation unit 12.
And since the gas melt | dissolution part 3a is provided with the pressurization pump 7, the gas introduction path 6, and the air vent valve 13, the gas melt | dissolution part 3a can be made to act as the fine bubble inflow prevention means 22. FIG.

  When fine bubbles are present in the hot water flowing through the circulation path 2 or hot water in the bathtub 1, if air is introduced into the circulation path 2 through the gas introduction path 6, the air and the fine bubbles are combined and become large. It becomes a bubble. The coupling between the air and the fine bubbles can be promoted by the operation of the pressurizing pump 7, and the fine bubbles existing in the hot water become large bubbles by passing through the pressurizing pump 7. The air vent valve 13 automatically exhausts the air separated by the separation unit 12 from the circulation path 2, so that large bubbles present in the hot water passing through the pressure pump 7 can be removed from the circulation path 2. . In this way, the fine bubbles present in the hot water flowing through the circulation path 2 and the hot water in the bathtub 1 can be made into large bubbles, and the large bubbles can be removed by the air vent valve 13. Inflow of fine bubbles to the can be prevented.

As in the first embodiment, the operation control means 5 is configured to be able to execute a fine bubble operation, a chasing operation, and a chasing operation for preventing fine bubble inflow.
The operation in the fine bubble operation will be described.
As shown by the white arrow in FIG. 12, the operation control means 5 closes the first on-off valve 41, opens the second on-off valve 43, fully opens the pressure reducing valve 8, and closes the pressure reducing on-off valve 17. As a state, the pressurizing pump 7 is operated in the high pressure mode, and the hot water in the bathtub 1 is circulated in the circulation path 2 in a state where the gas dissolving part 3a and the pressure reducing valve 8 are passed. At this time, the memorial burner 18 is in a fire extinguishing state. Then, as indicated by the black arrow in FIG. 12, the operation control means 5 opens the air flow rate adjustment valve 9 to operate the air pump 10 and introduces air into the circulation path 2 through the gas introduction path 6. The operation state of the air flow rate adjustment valve 9, the operation state of the air pump 10, and the operation state of the pressurization pump 7 are controlled so that the dissolved oxygen concentration and the flow rate in the pressurization pump 7 are in the target state. Has been. Further, the operation control means 5 is configured to control the operating state of the pressure reducing valve 8 in a form in which the pressure reducing valve 8 is moved to the closed state so that the pressure detected by the pressure sensor 15 becomes the set pressure.
In this fine bubble operation, since the inflow of hot water into the remedy heat exchanger 19 is prevented, the fine bubbles can be prevented from flowing into the remedy heat exchanger 19.

The operation in the memorial operation will be described.
The operation control means 5 opens the first on-off valve 41, closes the second on-off valve 43, opens the pressure-reducing valve 8, and opens the pressure-reducing on-off valve 17 as shown by the white arrow in FIG. As a state, the pressurizing pump 7 is operated in the low pressure mode, and the hot water in the bathtub 1 is circulated in the circulation path 2 in a state in which the gas dissolving part 3a and the heating part 4 for remedy are passed in this order. ing. Then, the operation control means 5 starts combustion of the remedy burner 18 and controls the combustion of the remedy burner 18 so that the temperature detected by the temperature sensor 20 becomes the set temperature for remedy. It is configured as follows. At this time, the air flow rate adjusting valve 9 is in a fully closed state, and the air pump 10 is in a stopped state.

The operation in the chasing operation for preventing inflow of fine bubbles will be described.
As shown by the white arrow in FIG. 14, the operation control means 5 closes the first on-off valve 41, opens the second on-off valve 43, opens the pressure reducing valve 8, and opens the pressure reducing on-off valve 17. As a state, the pressurizing pump 7 is operated in the medium pressure mode so that hot water in the bathtub 1 is circulated in the circulation path 2 in a state in which the gas dissolving part 3a is passed. Then, as indicated by the black arrow in FIG. 14, the operation control means 5 opens the air flow rate adjusting valve 9 to operate the air pump 10 to introduce air into the circulation path 2 through the gas introduction path 6. The pressurizing pump 7 is also operated. In this way, by operating the pressurizing pump 7 while introducing air into the circulation path 2 through the gas introduction path 6, the gas dissolving part 3 a acts as the fine bubble inflow prevention means 22, thereby increasing the size of the fine bubbles. As the foam, the large foam can be removed by the air vent valve 13. Thereafter, the operation control means 5 switches the first on-off valve 41 to the open state and the second on-off valve 43 to the closed state as indicated by the hatched arrows in FIG. And the combustion of the tracking burner 18 is started, and the combustion of the tracking burner 18 is controlled so that the temperature detected by the temperature sensor 20 becomes the setting temperature for tracking. ing.
Incidentally, with respect to the timing for switching the first on-off valve 41 to the open state and the second on-off valve 43 to the closed state, the hot water remaining on the downstream side in the hot water circulation direction from the pressurizing pump 7 is returned to the bathtub 1. Then, after the hot water in the hot water circulation direction downstream of the pressurizing pump 7 becomes hot water passing through the pressurizing pump 7, the first on-off valve 41 is switched to the open state and the second on-off valve 43 is switched to the closed state. Is preferred. If it does in this way, it can prevent that the fine bubble which exists in the hot water which remained in the downstream of the hot water circulation direction rather than the pressurization pump 7 flows into the heat exchanger 19 for remedy.

In the fourth embodiment, since the gas dissolving part 3a can act as the fine bubble inflow prevention means 22, the operation control means 5 applies pressure while introducing air into the circulation path 2 through the gas introduction path 6. By operating the pump 7, the defoaming operation for eliminating the fine bubbles present in the hot water in the circulation path 2 and the bathtub 1 is configured to be executable.
Regarding the execution of the defoaming operation, for example, if there is a command to start the defoaming operation, the defoaming operation is started, and when the set time for the defoaming operation has elapsed from the start or there is a command to end the defoaming operation And it is comprised so that a defoaming driving | operation may be complete | finished.

The operation in the defoaming operation will be described.
As shown by the white arrow in FIG. 15, the operation control means 5 closes the first on-off valve 41, opens the second on-off valve 43, opens the pressure reducing valve 8, and opens the pressure reducing on / off valve 17. As a state, the pressurizing pump 7 is operated in the medium pressure mode so that hot water in the bathtub 1 is circulated in the circulation path 2 in a state in which the gas dissolving part 3a is passed. Then, as indicated by the black arrow in FIG. 15, the operation control means 5 opens the air flow rate adjusting valve 9 to operate the air pump 10 and introduces air into the circulation path 2 through the gas introduction path 6. The pressurizing pump 7 is also operated. In this way, by operating the pressurizing pump 7 while introducing air into the circulation path 2 through the gas introduction path 6, the gas dissolving part 3 a acts as the fine bubble inflow prevention means 22, thereby increasing the size of the fine bubbles. As the bubbles, the large bubbles can be removed by the air vent valve 13 to eliminate the fine bubbles.

The operation when switching from the fine bubble operation to the follow-up operation for preventing fine bubble inflow will be described based on the time chart of FIG.
The operation control means 5 controls the first on-off valve 41 in the closed state, the second on-off valve 43 in the open state, the pressure reducing valve 8 in the closed state, and the pressure reducing on-off valve 17 in the closed state during the fine bubble operation. The pressurizing pump 7 is operated in the high pressure mode. Thereafter, when a command for starting the memorial operation is instructed, the operation control means 5 keeps the air flow rate adjusting valve 9 in the open state and the air pump 10 in the open state, opens the pressure reducing valve 8 in the fully open state, and fine bubbles. Switch from operation to memorial operation to prevent inflow of fine bubbles. Then, the operation control means 5 opens the pressure reducing on-off valve 17 and operates the pressurizing pump 7 in the medium pressure mode to make the fine bubbles into large bubbles and remove the large bubbles with the air vent valve 13. I am doing so. Thereafter, the operation control means 5 switches the first on-off valve 41 to the open state, switches the second on-off valve 43 to the closed state, and then burns the remedy burner 18.

[Another embodiment]
(1) In the first and fourth embodiments, the operation control means 5 performs the memorial operation when switching from the fine bubble operation to the memorial operation and until the set time elapses after the fine bubble operation is completed. Sometimes, the follow-up operation for preventing the inflow of fine bubbles is executed, but when the follow-up operation for preventing the inflow of fine bubbles is executed can be appropriately changed.
For example, when the chasing operation is performed, such as when the microbubble operation is performed before the chasing operation, when there is a possibility that the microbubbles may flow into the chasing heating unit 4, the microbubble inflow prevention chase is performed. You can also perform dredging.

(2) In the first and fourth embodiments, either the temperature rise of the hot water in the bathtub 1 or the generation of fine bubbles is performed, but the inside of the bathtub 1 is generated while generating the fine bubbles. It is also possible to raise the temperature of hot water.

  In the first embodiment, since the fine bubbles can be removed by the fine bubble removing unit 21, the heat for remedy is maintained in a state where the fine bubbles are removed by the fine bubble removing unit 21 even if the fine bubbles are generated. Hot water can be allowed to flow into the exchanger 19. When the temperature of the hot water in the bathtub 1 is raised while generating fine bubbles, the operation control means 5 performs a follow-up operation for preventing the inflow of fine bubbles and opens the air flow rate adjusting valve 9 to open the air pump 10. The air flow adjustment valve 9 is activated and the air pump is adjusted so that the dissolved oxygen concentration and the flow velocity in the pressurization pump 7 are set to the target state while air is introduced into the circulation path 2 through the gas introduction path 6. 10 operating states and the operating state of the pressure pump 7 are controlled. Further, the operation control means 5 controls the operation state of the pressure reducing valve 8 in a form in which the pressure reducing valve 8 is shifted to the closed state so that the pressure detected by the pressure sensor 15 becomes the set pressure. In this way, the temperature of the hot water in the bathtub 1 can be increased while generating fine bubbles.

  In the fourth embodiment, by operating the pressurizing pump 7 while introducing air from the gas introduction path 6, the fine bubbles can be removed as large bubbles by the air vent valve 13. Even if fine bubbles are generated, hot water can be allowed to flow into the heat exchanger 19 for remembrance while the fine bubbles are removed as large bubbles by the air vent valve 13. When the temperature of the hot water in the bathtub 1 is raised while generating fine bubbles, the operation control means 5 performs a follow-up operation for preventing the inflow of fine bubbles, and the dissolved oxygen concentration and flow rate in the pressurizing pump 7. Are controlled so as to control the operating state of the air flow rate adjusting valve 9, the operating state of the air pump 10, and the operating state of the pressurizing pump 7. Further, the operation control means 5 controls the operation state of the pressure reducing valve 8 in a form in which the pressure reducing valve 8 is shifted to the closed state so that the pressure detected by the pressure sensor 15 becomes the set pressure. In this way, the temperature of the hot water in the bathtub 1 can be increased while generating fine bubbles.

(3) In the first embodiment, the fine bubble removing unit 21 includes the narrow tube flow path 23, the gas-liquid separation unit 24, and the fine bubble removal valve 25. Any other configuration can be applied.

(4) In the said 1st Embodiment, the fine bubble inflow prevention means 22 shows the example comprised from the fine bubble removal part 21, In the said 2nd and 3rd embodiment, the fine bubble inflow prevention means 22 is a memorial. The example comprised from the bypass path 38 and the switching means of the 1st three-way valve 39 and the 2nd three-way valve 40 is shown, In the said 4th Embodiment, the fine bubble inflow prevention means 22 is the pressurization pump 7, gas introduction | transduction Although the example comprised by the path | route 6 and the air vent valve 13 was shown, until the set time passes after completion | finish of fine bubble operation, the instruction | indication of a follow-up operation is performed for the fine bubble inflow prevention means. Regardless of whether it is present or not, it is also possible to prohibit the execution of the memorial operation.

(5) In the first to fourth embodiments, the hot water supply part 31 for supplying hot water into the bathtub 1 is provided in the hot water supply supply path 30 connected to the circulation path 2, but this hot water supply part 31 is not provided. It can also be implemented.

(6) In the first to third embodiments, the reheating heater 4 is arranged upstream of the gas dissolving part 3a in the hot water circulation direction. However, the reheating heater 4 is gas in the hot water circulation direction. It can also be carried out by being arranged downstream of the dissolving part 3a.

(7) In the fourth embodiment, the operation control means 5 is configured to execute the fine bubble operation, the chasing operation, the chasing operation for preventing the inflow of fine bubbles, and the defoaming operation. It can also be configured not to execute. Or, it is configured not to execute the chasing operation for preventing the inflow of fine bubbles, and when performing the chasing operation after performing the micro bubble operation, always perform the chasing operation after performing the defoaming operation. It can also be configured.

(8) In the fourth embodiment, the first bypass path 42 connected to the circulation path 2 is provided in a state in which the remedy heating section 4 is bypassed, and the circulation path is bypassed in the remedy heating section 4. Although the hot water in the bathtub 1 can be circulated at 2, the bathtub 1 can be circulated in the circulation path 2 without passing through the first heating passage 4 without providing the first bypass path 42. You may make it circulate the inside hot water.

The block diagram in the fine bubble driving | operation of the bath apparatus in 1st Embodiment The block diagram in the memorial operation of the bath apparatus in 1st Embodiment The block diagram in the memorial operation for microbubble inflow prevention of the bath apparatus in 1st Embodiment Time chart showing operation when switching from memorial operation to fine bubble operation Time chart showing the operation when switching from micro bubble operation to memorial operation to prevent micro bubble inflow The block diagram in the fine bubble operation of the bath apparatus in 2nd Embodiment The block diagram in the memorial operation of the bath apparatus in 2nd Embodiment Time chart showing operation when switching from memorial operation to fine bubble operation Time chart showing operation when switching from micro bubble operation to memorial operation The block diagram in the fine bubble driving | operation of the bath apparatus in 3rd Embodiment The block diagram in the memorial operation of the bath apparatus in 3rd Embodiment The block diagram in the micro bubble operation of the bath device in a 4th embodiment The block diagram in the memorial operation of the bath apparatus in 4th Embodiment The block diagram in the memorial operation for the microbubble inflow prevention of the bath apparatus in 4th Embodiment The block diagram in the defoaming driving | operation of the bath apparatus in 4th Embodiment Time chart showing the operation when switching from micro bubble operation to memorial operation to prevent micro bubble inflow

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathtub 2 Circulation path 3 Fine bubble generation | occurrence | production part 3a Gas dissolution part 4 Heating part for remedy 5 Operation control means 6 Gas introduction path 7 Pressure pump 8 Foaming part (pressure-reducing valve)
13 Gas vent valve (Air vent valve)
21 Fine bubble removal unit 22 Fine bubble inflow prevention means 26 Removal gas supply means (removal gas supply path)
30 Supply path for hot water supply 31 Hot water supply section 38 Bypass path (bypass path for remembrance)
39 Switching means (first three-way valve)
40 switching means (second three-way valve)

Claims (9)

A circulation path for circulating hot water in the bathtub,
A gas dissolving part that dissolves gas in hot water circulated in the circulation path, and a fine bubble generating part that includes a foaming part that generates fine bubbles using water in which the gas is dissolved, and
A reheating heating unit for heating hot water circulated in the circulation path;
Fine gas operation in which hot water is circulated in the circulation path in a state where gas is dissolved in hot water in the gas dissolving part and fine bubbles are generated in the foaming part, and hot water is supplied in the heating part for remedy. A bath apparatus provided with operation control means capable of performing a chasing operation for circulating hot water in the circulation path in a heated state,
A bath apparatus provided with fine bubble inflow prevention means for preventing inflow of fine bubbles into the memorial heating section. The gas dissolving part is configured with a pressure pump,
The bath apparatus according to claim 1, wherein the memorial heating unit is disposed upstream of the gas dissolving unit in the hot water circulation direction. The fine bubble inflow prevention means is circulated in the circulation path at a bypass path connected to the circulation path in a state of bypassing the tracking heating unit, and a connection point between the circulation path and the bypass path. Comprising a switching means capable of switching between a supply state for supplying hot water to the heating unit for remedy and a bypass state for supplying hot water circulated in the circulation path to the bypass path,
The operation control means is configured to control the operation of the switching means so as to switch the switching means to a bypass state during the fine bubble operation and to switch the switching means to a supply state during the memorial operation. The bath apparatus according to claim 1 or 2.   Until the set time elapses after the fine bubble operation ends, the fine bubble inflow prevention means prohibits the execution of the follow-up operation regardless of whether there is a command to start the follow-up operation. The bath apparatus according to any one of claims 1 to 3, which is configured as described above.   When there is a command to start the chasing operation after the set time elapses after the microbubble operation is completed, a hot water supply unit that supplies hot water into the bathtub through the hot water supply path connected to the circulation path The bath apparatus according to claim 4, which is provided.   The bath apparatus according to claim 1 or 2, wherein the fine bubble inflow prevention means is constituted by fine bubble removal means for removing fine bubbles from the hot water flowing into the memorial heating section.   The bath according to claim 6, wherein a removal gas supply means for supplying a removal gas removed by the fine bubble removal means is provided to a gas introduction path for introducing a gas into the circulation path in the gas dissolving section. apparatus.   The fine bubble inflow prevention means includes a pressurization pump, a gas introduction path for introducing gas into the circulation path upstream of the pressurization pump in the hot water circulation direction, and the pressurization pump in the hot water circulation direction. The bath apparatus according to claim 1, further comprising a gas vent valve that vents gas from the hot water in the circulation path on the downstream side. The gas dissolving part is configured to include the pressurizing pump, the gas introduction path, and the gas vent valve,
The bath apparatus according to claim 8, wherein the memorial heating unit is disposed downstream of the gas dissolving unit and upstream of the foaming unit in the hot water circulation direction.

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