JPH073245Y2 - Reheating device for bubble bath - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a bubble bath reheating device.

(Prior Art) In a conventional bubble bath reheating device, as shown in FIG. 2, a circulation circuit 2 including a forward pipe 2a and a return pipe 2b is provided with:
The filter circuit 22 was provided in parallel with the bath heat exchanger 6, and the filter circuit 22 was provided with the filter 23. Further, a hot water supply circuit 3 for dropping hot water into the bathtub 1 is connected to the bathtub 1 via a filtration circuit 22, and a backwash circuit 31 for washing a filter 23 is branched from the hot water supply circuit 3 and the filter 23 Was connected downstream.

In the bubble bath reheating device having the above-described configuration, during the filtration operation, the bath water is passed from the outflow pipe 2a to the circulation circuit 2 and the filtration circuit 22.
2, the bath water was passed from the upper side to the lower side of the filter 23 in FIG. 2 for filtration, and the hot water returned to the bath 1 was mixed with air bubbles to make the inside of the bath 1 into a bubble bath state. . Then, when the filtration operation is performed for a predetermined time, the filter 23 is caused to perform the backwash operation for a predetermined time so that hot water or water from the backwash circuit 31 is caused to flow upward from below and drained from the backwash drain circuit 24. Was doing.

(Problems to be Solved by the Invention) In the above conventional example, in order to perform backwashing of the filter 23 during the filtering operation, it was necessary to stop the passage of the bath water to the filtering circuit 22.

However, if the passage of the bath water to the filtration circuit 22 is stopped, the circulation of the bath water is limited to the circulation circuit 2 and the amount of bubble jets discharged to the bath 1 decreases, which is not preferable for the bather. It was a thing.

The present invention has been made in view of the drawbacks of the above conventional example,
It is an object of the present invention to provide a bubble bath reheating device that does not reduce the amount of bubble jets even when backwashing a filter during a filtration operation in which a bubble jet is discharged from a bath.

(Means for Solving the Problem) In order to achieve the above object, the bubble bath reheating device of the present invention is a circulation circuit for circulating hot water in a bathtub and discharging a bubble jet into the bathtub, and a heat exchanger for bath. A filtration circuit is provided which connects the upstream side and the downstream side of the bath heat exchanger, the filtration circuit is provided with a filtration circuit, and the filtration circuit is provided downstream of the filtration circuit for cleaning. While connecting the washing circuit, in the one provided with a bypass circuit that branches from the circuit upstream of the filter and joins and connects to the downstream circuit, the water resistance of the bypass circuit and the branch point of the bypass circuit The water resistance of the downstream filtration circuit is made approximately equal.

(Operation) According to the present invention, when the backwashing operation of the filter is performed during the filtration operation in which the bubble jet is discharged to the bathtub, the bath water flowing in the filtration circuit is made to flow to the bypass circuit and discharged to the bathtub. Do not change the amount of bubble jet flow.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an overall configuration diagram of a bubble bath reheating device in which an automatic hot water supply reheating function is added to a filtration device with a foam function. In FIG. 1, 1 is a bathtub, 2 is a circulation circuit for circulating hot water in the bathtub 1 and discharging a bubble jet into the bathtub 1, and the circulation circuit 2 is composed of a forward pipe 2a and a return pipe 2b. ing. Reference numeral 4 denotes a foam ejector provided on the wall of the bathtub. The foam ejector 4 is provided with a discharge port 4a and a suction port (not shown). The forward pipe 2a is connected to the suction port, and the return pipe 2b is connected to the discharge port 4a. Also, the foam ejector 33 has an on-off valve.
An air pipe 34 is provided through 35, and bubbles can be mixed into the jet jet discharged from the circulation circuit 2 by the ejector effect. In the circulation circuit 2, a pump 5 for forcibly circulating the hot water in the bathtub 1, a bath heat exchanger 6 for heating the hot water, a pressure sensor 7 for detecting the water level in the bathtub 1,
A water flow switch 8 used for circulation determination and the like, and a thermistor 9 for detecting the temperature of hot water in the bathtub 1 are provided.

Reference numeral 22 denotes a filtration circuit that connects the upstream side and the downstream side of the bath heat exchanger 6 in the circulation circuit 2 to each other.
A filter 23 is interposed in 22. Reference numeral 21 denotes a bypass circuit that branches from a circuit upstream of the filter 23 and joins and connects to a downstream circuit. For example, in FIG. 1, the bypass circuit 22 bypasses the filter circuit 22 upstream of the filter 23 through a three-way valve 27. Circuit 21
Is branched and connected to the return pipe 2b downstream of the filter 23. The water flow resistance of the bypass circuit 21 and the water flow resistance of the circuit downstream of the branch point of the filtering circuit 22 from the bypass circuit 21 are substantially equal to each other. Further, a backwash circuit 31 is connected via a three-way valve 25 at a location downstream of the filter 23 of the filtration circuit 22,
The backwash circuit 31 has a governor 28 for constant flow rate and an air separator 29.
Is provided. Further, from the upstream side of the filter 23 of the filter circuit 22, a backwash drain circuit 24 via a three-way valve 26.
Is branched. The three-way valves 25 and 26 form a flow path switching means. Reference numeral 32 denotes an air bleeding valve provided in the filtration tank 23 for bleeding air from the tank when the filtration tank 22 is filled with water.

3 is a hot water supply circuit for dropping hot water into the bathtub 1,
The hot water supply circuit 3 is connected to the bathtub 1 via the filtration circuit 22. The hot water supply circuit 3 is connected to the circulation circuit 2 from city water through the hot water supply heat exchanger 10, and the hot water supply branch circuit 11 is branched from the hot water supply circuit 3 downstream of the hot water supply heat exchanger 10. There is. The hot water supply branching circuit 11 is connected to a shower, a currant, or the like, and supplies hot water to these devices. An inlet water flow rate sensor 12 for detecting the inlet water flow rate from city water and a thermistor 13 for detecting the water temperature are provided on the upstream side of the hot water supply heat exchanger 10 in the hot water supply circuit 3, and the hot water supply heat exchanger is provided. Between the hot water supply branch circuit 11 and the hot water supply branch circuit 11, there are provided a flow rate adjusting valve 14 for adjusting the incoming water flow rate, and a thermistor 15 for detecting the hot water supply temperature of the hot water supply heat exchanger 10. Further, on the downstream side of the hot water supply branch circuit 11, a flow rate adjusting valve 16 for controlling the drop flow rate, a drop flow rate sensor 17 for detecting the drop flow rate into the bathtub 1, and a vacuum breaker.
18 、 Open / close valve for dropping the hot water supply circuit 3 19
And a check valve 20 is provided.

The backwash circuit 31 branches off from the check valve 20 downstream of the hot water supply circuit 3, and the end of the hot water supply circuit 3 is directly connected between the three-way valve 26 and the three-way valve 27 of the filtration circuit 22.

The automatic bath device is provided with an operating device (not shown), and the operating device is provided with an operation switch, an automatic dropping switch, a filtration switch, a foam switch, a reheating switch, and the like.

The operation of the bubble bath reheating device at the time of dropping (hot water supply) will be described. The three-way valve 27 connects the filtration circuit 22 and the reheating device 2 and the three-way valve 25 closes the foam ejector 4 side. The three-way valve 26 is controlled so as to close the backwash drain circuit 24 side. Then, when the drop opening / closing valve 19 is opened, hot water flows from the hot water supply circuit 3 into the filtration circuit 22 and then flows into the circulation circuit 2 and flows from the two passages of the forward pipe 2a and the return pipe 2b into the bathtub. Dropped into 1.

Next, during the filtering operation, the three-way valve 25 is controlled to open toward the foam ejector 4 side, and the three-way valve 26 is controlled to close toward the backwash drain circuit 24. The three-way valve 27 is controlled so that the filtration circuit 22 and the circulation circuit 2 communicate with each other, and the pump 5 is operated. Hot water is sucked into the outflow pipe 2a from the bathtub 1 and flows through the circulation circuit 2. The hot water flowing in the circulation circuit 2 is split into one that flows in the filtration circuit 22 and the one that flows in the circulation circuit 2 in which the bath heat exchanger 6 is arranged, and joins again in the return pipe 2b to form a bubble ejector. 4 is discharged into the bathtub 1.
During the above operation, the hot water flowing through the filter circuit 22 passes through the filter 23, and fine dirt such as scales in the bath water is removed. Further, during the filtering operation, the opening / closing valve 35 of the air pipe 34 connected to the foam ejector 4 is opened, and bubbles are mixed into the jet jet discharged into the bathtub 1 to form a foam bath. Then, during the filtration operation as described above, a backwash operation described later is performed for a predetermined time at a predetermined cycle.

That is, during the backwash operation, the three-way valve 25 is controlled so as to connect the backwash circuit 31 and the filter 23, and the three-way valve 26 is controlled so as to open toward the backwash drain circuit 24. The three-way valve 27 is controlled so that the bypass circuit 21 and the circulation circuit 2 communicate with each other, and the pump 5 is operated. Hot water is sucked into the outflow pipe 2a from the bathtub 1 and flows through the circulation circuit 2. The hot water flowing in the circulation circuit 2 is divided into one flowing in the bypass circuit 21 and the other flowing in the circulation circuit in which the bath heat exchanger 6 is disposed on the way, and merged again in the return pipe 2b to form the bubble ejector 4 Is discharged into the bathtub 1. Further, the opening / closing valve 35 of the air pipe 34 is opened even during the predetermined time when the backwash operation as described above is performed, and bubbles are mixed in the jet jet discharged into the bathtub 1 to make the bathtub 1 in a bubble bath state. . Since the water passage resistances of the filtering circuit 22 and the bypass circuit 21 are substantially equal to each other, the amount of bubble jet flow into the bathtub 1 during the backwash operation is the same as that during the filtering operation.

Further, the drop opening / closing valve 19 is opened during the backwash operation. Then, the hot water or water in the hot water supply circuit 3 flows into the backwash circuit 31, the flow rate is reduced by the governor 28, and the air separator
After being separated into steam and water by 29, the water is drained from the backwash drain circuit 24 by backflowing through the filter 23. At this time, since the backwash water flows back in the filter 23, the dirt attached to the filter material in the filter 23 is removed and washed away by the backwash water,
It is discharged together with the backwash water.

Although the above-mentioned backwashing operation has been described in connection with the drop-in operation, it is possible to operate only the backwashing operation alone.

Next, the operation during bubble operation without filtering the bath water will be described. The three-way valves 25 and 26 close the foam ejector 4 and the backwash drain circuit 24 side, respectively, as in the case of dropping. Then, the three-way valve 27 is controlled so that the bypass circuit 21 and the circulation circuit 2 communicate with each other as in the backwashing operation during the filtering operation. Then, when the pump 5 is operated, hot water is sucked from the bathtub 1 into the outflow pipe 2a and flows in the circulation circuit 2. The hot water flowing in the circulation circuit 2 is divided into one that flows in the bypass circuit 21 and the one that flows in the circulation circuit 2 in which the bath heat exchanger 6 is disposed on the way, and then joins again in the return pipe 2b to form a bubble ejector. 4 is discharged into the bathtub 1. Then, the opening / closing valve 35 of the air pipe 34 is opened, and bubbles are mixed in the jet jet discharged into the bathtub 1 to cause the bathtub 1 to flow.
To the state of the bubble bath.

Even in the foaming operation, as in the backwashing operation, the bath water flowing in the filtering circuit 22 during the filtering operation flows to the bypass circuit 21, so that the amount of bubble jet is the same as that in the filtering operation.

Next, the operation during the reheating operation will be described. Three-way valve 25, 2
6 and 27 are controlled in the same manner as during bubble operation, and the pump 5 is operated. The bath water flows into the circulation circuit 2 and the bypass circuit 21 as in the bubble operation, and is returned to the bath again from the return pipe 2b. The bath water passing through the circulation circuit 2 in which the bath heat exchanger 6 is arranged is heated by a burner (not shown) when passing through the bath heat exchanger 6.

Each operation described above is controlled by a single control device including a microcomputer, and its operating device may correspond to the control device.

(Effects of the Invention) As is apparent from the above-described embodiments, the present invention provides a circulation circuit for circulating hot water in a bathtub and discharging a bubble jet into the bathtub by providing a filter circuit with a filter interposed between the circulation circuit and the upstream side of the filter. In the case where a bypass circuit is provided that branches from the circuit and joins the downstream circuit, the water resistance of the bypass circuit and the water resistance of the filtration circuit downstream of the branch point of the bypass circuit are made approximately equal. Therefore, when backwashing the filter during the filtration operation in which the bubble jet is discharged from the bathtub, the bath water flowing in the filter circuit can be made to flow to the bypass circuit so that the amount of bubble jet does not change. is there.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, and FIG. 2 is an overall configuration diagram of a conventional example. 1 …… Bath 2 …… Circulation circuit 5 …… Pump 6 …… Bath heat exchanger 21 …… Bypass circuit 22 …… Filtration circuit 23 …… Filtrator 31 …… Backwash circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Fumimasa Fujimoto Inventor Yoshifumi Muramoto Examiner at Noritsu Ltd., 32 Akashi-cho, Chuo-ku, Kobe-shi, Hyogo

Claims (1)

[Scope of utility model registration request] A bath heat exchanger and a pump are provided in a circulation circuit for circulating hot water in a bathtub and discharging a bubble jet into the bathtub.
A filtration circuit that connects the upstream side and the downstream side of the bath heat exchanger is provided, and the filtration circuit is provided with a filter,
While a backwash circuit for washing is connected downstream of the filter, a bypass circuit that branches from a circuit upstream of the filter and joins the downstream circuit is provided. A bubble bath reheating device characterized in that the water resistance of a filtration circuit downstream of a branch point of the bypass circuit is approximately equal.