JPH0360659A - Bubble bath device - Google Patents

Abstract

PURPOSE:To construct a bubble bath device small and light and reduce the cost of a control circuit by subjecting only the main coil of a pump to phase control, and eliminating countermeasure for overheating of the pump. CONSTITUTION:A capacity control circuit 6 judges the frequency of a power supply with its main control circuit 61, and also judges which mode is selected by the user with a strong/weak selector switch. When a pump 5 is operated, bathing hot water is sucked from a suction hole 12 to a return pipe 4, discharged from the pump 5, and diverged to a bypass 7 and a heat exchanger 2, wherein a major part of the rate of circulative flow flows to the bypass 7. In the soft start mode in which the ability is increased gradually at the driving time of pump 5 or in additional boiling operation and strong/weak of bubble operation, the rate of flow is varied by subjecting the pump to phase control. This phase control is executed only to the main coil M of the pump 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a bubble bath device capable of supplying a jet stream containing bubbles into a bathtub.

(Conventional technology and 31 m) Conventionally, in bubble bath devices, for example,
As shown in No. 9'071, there is a pump in which the pump can be switched between strong operation and weak operation. In general, for pumps with an output of 200 W or more, pole number switching or an inverter may often be used as a method of varying the rotation speed. However, both of these are expensive or heavy.

On the other hand, for pumps with an output of about 100 W, phase control as shown in FIG. 3 has been established as a technique. That is, a phase control circuit B for controlling the phase of the AC power source is interposed in the commercial power source A, and the power source whose phase is adjusted to $11:B is connected to the pump C. Inside the pump C, a main coil M is connected to a power source, and is connected in series with a capacitor D, and a phase advance subcoil S for creating a rotating magnetic field is also connected to the power source. However, when trying to phase IHIL a pump with an output exceeding 200 W using the above circuit, the high frequency component of the waveform due to phase 'S control becomes heat due to capacitor D.
The motor generated too much heat. In order to protect the motor core and windings from this heat, it is necessary to take measures such as increasing the capacity of the motor and cooling it, which leads to increased cost and size.

Therefore, it has not been possible to provide a small, lightweight, and inexpensive bubble bath device that has functions such as multistage capacity switching and soft start that gradually increases capacity.

(Means for Solving the Problems) The present invention solves the above problems and is characterized by the following configuration. That is, a circulation circuit that is connected to the bathtub and circulates hot water in the bathtub to the outside of the bathtub and returns it back into the bathtub, a pump provided in the circulation circuit, and an air suction mechanism provided in the bathtub discharge part of the circulation circuit. A phase control circuit for controlling the phase of only the main coil of the pump is provided.

(Example) In the figure, (1) is a bathtub, and (2) is a bath heat exchanger, which are connected by a circulation circuit consisting of an outgoing pipe (3) and a return pipe (4). (5) is a pump interposed in the return pipe (4), which has the ability to achieve a bubble bath function (if fFl is 13017 minutes of circulating water). (6) is a capacity control circuit for the pump (5), which varies the capacity of the pump (5) by phase control, and constitutes a circulating flow rate variable means. (7) is a circuit for controlling the capacity of the pump (5). 2), the flow rate to the bath heat exchanger (2) is reduced to m1.
lli, and an orifice (8) is provided to set the flow rate.

(9) is a discharge port installed in the bathtub wall, and a solenoid valve (11)
An air pipe (10) arranged with an air pipe (10) is connected thereto, and constitutes an air suction mechanism. (12) is a suction port provided on the wall of the bathtub, and is open to the outer periphery of the discharge port (9).
(13) is a water flow switch installed between the bypass passage (7) of the return pipe (4) and the inlet of the heat exchanger (2), which detects water flow during refiring and operates a burner (not shown). (14) is a temperature detector arranged in the return pipe (4), which detects the temperature of the bath and stops the burner when the set temperature is reached.

The capacity control circuit (6>) includes a main control circuit (61) that sets the phase angle according to the operation mode, and a phase control circuit (6) that controls the power supply at the phase angle set by the raw@control circuit (61).
2). The pump (5) has a main coil M and a phase advancing sub-coil S for creating a rotating magnetic field, and the main coil M has the phase! 4 control circuit (
62) to an AC power source. The subcoil S is connected in series with the capacitor D, and the phase control circuit (6
2) It is connected to an AC power supply without going through it.

In this embodiment, the main l control circuit (61) is controlled by a microcomputer, and it determines the power supply frequency and also determines the total of 4 points of 60Hz strength and weakness, 50Hz strength and weakness, and 1 point for reheating. It is assumed that phase angles of five points are set and output. Furthermore, in the soft start mode in which the capacity is gradually increased when the pump (5) is driven, the phase angle is gradually increased.

Next, the operation of the above configuration will be explained.

First, when used as a bubble bath, the capacity TSM circuit (6)
The main control circuit (61) determines the power supply frequency, and a strength changeover switch (not shown) determines which mode has been selected by the user. For example, in the case of strong operation at 60 Hz, a corresponding phase angle is output to the phase 11 control circuit (62). In other words, if you connect the commercial power supply directly to the same pump, it will not work at 50Hz and 60Hz.
are different, so the same flow rate (for example, 301/min)
The phase is controlled to flow. When the pump (5) is operated, the bath flows from the suction port (12) to the return pipe (4).
After being sucked in by the pump (5) and discharged by the pump (5), it is divided into the bypass passage (7) and the heat exchanger (2). Most of the circulating flow flows into the bypass passage (7). This is because when the full flow is passed through the heat exchanger (2), there is a large resistance, and heat exchange! This is because (2) becomes large and furthermore, corrosion due to running water occurs. The baths merge again and the outgoing pipes (
3) and is ejected from the discharge port (9) into the bathtub (1). When the electromagnetic valve (11) is opened here, air is sucked in by the air pipe (10) by the discharge flow, becomes bubbles in the jet flow, and is ejected into the bathtub (1).

Next, when reheating, the capacity tt4m [OIV & (6)
+ The pump (5) is operated at a low capacity. Pump (5)
Of the discharge stream from the heat exchanger (2), that which flows into the heat exchanger (2) is heated by the heat exchanger (2). This flow rate is set at about IOJ/min due to problems such as corrosion. The heated bath joins the bath that has passed through the bypass passage (7), is cooled down, and is discharged from the discharge port (9>).This discharge stream is not hot even when it hits the human body.

By the way, the above-mentioned strength of foam operation and reheating operation, or pump (5) 9! In the soft start mode, which gradually increases the capacity when the pump is activated, the flow rate is changed by controlling phase 11 of the pump. And phase w4 control is pump (5)
This is done only for the main coil M. Therefore, since only a sine wave is applied to the subcoil S, less heat is generated compared to the conventional one. In addition, since the rotating magnetic field is created in the form of a sine wave, the torque is increased in the direction of E and the efficiency is also increased. Therefore 2
Even if it has a large capacity of 00W or more, it does not need to be unnecessarily large or heavy.

(Effects of the Invention) As described above, in the bubble bath device of the present invention, only the main coil of the pump is controlled in phase f4, so it is possible to perform multi-stage capacity switching and control to gradually increase the capacity. Also, heat generation from the subcoil capacitor has been reduced, further increasing efficiency. Therefore, there was no need to take measures to prevent the pump from overheating, and the pump could be made smaller and lighter. or,
The 1i1111 circuit also requires only a few changes to the conventional circuit, and is inexpensive. Furthermore, since no heat is generated, there is also the effect that power consumption is reduced.

[Brief explanation of drawings]

FIG. 1 is an overall circuit diagram of a bubble bath device according to the present invention, and FIG. 2 is a circuit diagram of a pump capacity control circuit. FIG. 3 is a circuit diagram of a conventional pump. (1) ... Bathtub (3) ... Outgoing pipe (4) ... Return pipe (5) (6) (62) M ... Pump ... Capacity! 4 control circuit...phase! 4 Mikuji/Main coil

Claims (1)

[Claims] It has a circulation circuit connected to the bathtub, which circulates hot water in the bathtub to the outside of the bathtub and returns it back into the bathtub, a pump provided in the circulation circuit, and an air suction mechanism provided in the bathtub discharge part of the circulation circuit. 1. A bubble bath device comprising a phase control circuit that controls the phase of only the main coil of the pump.