JPH03224562A - Safety water discharge control of high temperature hot water in bubble generating bathtub - Google Patents

Abstract

PURPOSE:To contrive the safety to the body by providing a piping area so that when bath hot water in a bath hot water circulating pump remains a high temperature, even if a bath hot water circulating pump operation starting operation is executed, high temperature hot water is discharged so as hot to exert an injury on the body. CONSTITUTION:An inverter 1 changes an output frequency under the control of a control part C and changes steplessly the speed of revolution of a pump driving motor M. Subsequently, when bath hot water becomes a prescribed set high temperature, it is sensed by a sensor T and a signal for stopping an operation of a bath hot water circulating pump P is outputted and a jet of bath hot water from nozzles 2-4 is stopped. Accordingly, when an operation switch is turned on again after becoming bath hot water of a suitable temperature, the bath hot water circulating pump P starts an operation, but the piping area is provided so that high temperature hot water in the bath hot water circulating pump hits against a state that no injury is exerted on the body, that is, the breast having comparatively dull senses, and also, high temperature hot water is discharged gradually by executing stepwise an opening operation of a jet nozzle. In such a way, the safety to the body is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to safe spouting control of hot water in a bubble-generating bathtub.

(b) Conventional technology Conventionally, while circulating the bath water in the bathtub body through a bath water circulation pump installed separately, the bath water is jetted out from a jet nozzle, and at the same time air is jetted out as bubbles along with the bath water. There is a bubble-generating bathtub in which bubbles are ejected as bubbles (Japanese Patent Laid-Open No. 59-135058).

In order to ensure safety from hot water in such a bubble-generating bathtub, when a certain amount of hot water is in the bathtub, a sensor detects the high temperature and outputs a signal to the control unit. The applicant has already filed an application for the idea of automatically stopping the operation of the bath water circulation pump I1 to ensure physical safety (Japanese Patent Application No. 1-13207fi, Japanese Patent Application No. 1-130817) ).

(c) Problems to be solved by the invention However, in the case of a control system that automatically stops operation at high temperatures, it is necessary to fill the hot water bathtub with water to maintain the appropriate temperature. The operation switch can be operated to restart the bath water circulation pump, but as long as there is still hot water remaining in the piping or in the bath water circulation pump, the bath water circulation pump will not operate. It won't happen.

This is because the bath water in the piping or the bath water circulation pump is
This is because the sensor is still sensing the temperature to prevent high-temperature operation and outputting a signal to stop the bath water circulation pump.

Therefore, in order to restart the operation of the bath water circulation pump, it is necessary to wait for the high temperature water in the piping or the bath water circulation pump to cool down to the temperature at which operation can be resumed, resulting in poor efficiency.

For this reason, when the temperature reaches the appropriate temperature during bathing, the bath water circulation pump can be operated by turning on the switch to resume operation, regardless of the high temperature water in the piping. There is a risk that hot water will be spewed out from the spout nozzle and may cause bodily harm.

In this invention, in such a case, the hot water is discharged without causing any harm to the body.

(d) Means for Solving the Problems This invention provides a bath water circulation flow path between a bathtub body and a bath water circulation pump installed outside the bathtub body, and communicates with the bath water circulation flow path. While inhaling air from the connected air intake,
In a bubble-generating bathtub configured to be able to eject bathwater mixed with bubbles from multiple jetting nozzles provided in the bathtub body, regardless of the appropriate temperature in the bathtub body, the bathwater in the piping or bathwater circulation pump may be hot. A safety water discharge control routine has been installed to ensure that even if the bath water circulation pump is started while the bath water is still hot, the hot water will be discharged without causing any harm to the body.
When the safe water discharge control routine is configured so that high-temperature water is spouted only from the chest nozzle, when the opening operation of the jet nozzle is configured in stages, the inverter that controls the motor for the bath water circulation pump The purpose of the present invention is to provide safe spouting control of high-temperature hot water in a bubble-generating bathtub, which may be configured so that water is spouted slowly.

(e) Function/Effect In this invention, when the bath water reaches a certain set high temperature, a sensor detects it and outputs a signal to stop the operation of the bath water circulation pump, thereby stopping the spouting of bath water from the nozzle. do.

Therefore, when you turn on the operation switch again after filling the bathtub with water and making the bath water at an appropriate temperature, the bath water circulation pump will start operating, but the high temperature water in the piping or the bath water circulation pump will
Water is spouted without causing any harm to the body,
For example, hot water is discharged only from the chest nozzle so that it hits the chest, which is relatively insensitive, to avoid splashing hot water on the legs and back, or the jet nozzle is opened in stages to gradually discharge hot water. Alternatively, the rotation speed of the bath water circulation pump may be slowed down for a while to allow water to be discharged slowly.

Therefore, even if high-temperature hot water remains in the pipes or in the bath water circulation pump, the water will not be discharged in a way that is dangerous to the body, and the jet operation can continue.

(F) Example First, the overall structure of the bubble-generating bathtub according to the present invention will be explained.

(A) shown in FIG. 1 is a bubble-generating bathtub according to the present invention, which includes a bathtub body (B) installed in the bathroom, various devices attached to it, and a functional part case (E) installed outdoors. It consists of various equipment installed in the

The bathtub body (B) has a box-shaped top opening and has a pair of foot-side and
A total of six ejection nozzles (2), (3), and (4) are provided on the dorsal and chest sides.

In addition, a flange-shaped edge of a certain width (
1), and an air intake part (5), an infrared signal receiving part (R1), and an operation panel (93) are provided on the same edge part (1).

Each of the ejection nozzles (2), (3), and (4) communicates with the air intake section (5) via an intake vibe (8).

The functional part case (E) has a bath water circulation pump (P
), an inverter (1) that controls the pump drive motor (M), a control unit (C) that controls the motor (M) and the motor (old) for driving the valve body for the nozzle, and a controller for bath water filtration. A filter (P) and an electric three-way valve (V) that controls the filter (F)
e).

The water intake port (9) provided at the bottom of the side wall of the bathtub body (B)
4) and the suction port (32e) of the bath water circulation pump (P), a bath water suction vibrator (10) for sending bath water from the bathtub body (11) to the bath water circulation pump (P) is interposed. At the same time,
Between the spout (32g) of the bath water circulation pump (P) and each spout nozzle (2), (3), and (4), there is a pipe for sending bath water from the pump (P) to the bathtub body (B). Bath water bullet delivery pipe (
11) is interposed to form a bath water circulation flow path (D).

(Old) is an infrared signal receiving section that receives an infrared signal from the remote controller (R), and is connected to the control section (C).

With the above configuration, by operating the remote controller (R), the output frequency of the inverter (1) (described later) can be controlled via the control unit (C), and the motor (old) for driving the nozzle valve body forward and backward can be controlled. , adjust the bath water jet pressure to each jet nozzle (
2) It is possible to change or adjust each of (3) and (4), or to control the operation of the filter () by controlling the electric three-way valve (Ve).

As shown in Fig. 2, the functional part case (IE) is formed into a substantially rectangular parallelepiped shape, and a shelf board (El) is installed inside to divide the internal space into upper and lower halves. ) Earth leakage breaker (ELB), fan (PI), isolation transformer (TI), power transformer (Tr), noise filter (P) are installed on the top surface.
It is equipped with electrical equipment such as an inverter (n), an inverter, and a control unit (C).

The inverter (1) changes the output frequency under the control of the control unit (C) to steplessly change the rotation speed of the pump drive motor (M), as shown in Fig. 3. , single-phase AC 100V power from the commercial power supply (S) is transferred to the power transformer (Tr), rectifier (''), smoothing capacitor (C''),
) is converted to DC 200V and supplied to the switching circuit (Sv) built in the inverter (1), and the switching frequency of the switching circuit (Sv) is transmitted from the control unit (C) via the inverter control circuit (IC). By controlling in accordance with the control code, the output frequency of the inverter (+) can be changed arbitrarily. Therefore, under control from the control section (C), the pump drive motor (M
) By changing the rotational speed of the bath water circulation pump (P) connected to the pump (P), the discharge pressure and discharge amount of the pump (P) can be changed steplessly.

The control unit (C) is provided on a substrate (C1) that stands on the inner surface of the inverter (1) at a predetermined interval.

A filter (F), a hot water circulation pump (P), and an electric three-way valve (Ve) are arranged below the shelf board (El).

As shown in Fig. 4, the bath water circulation pump (P) has an upper impeller chamber (33) and a lower impeller chamber (34) connected to each other via a communication channel (32d) in a pump casing (32). and form the lower impeller chamber (34)
is communicated with the bath water suction vibe (10) via the bath water suction path (32a) provided on the lower side of the pump casing (32), and the bath water forced feed pipe provided on the other side of the lower portion of the pump casing (32). The bath water bullet conveying pipe (1
1).

Then, the impeller shaft (35) is mounted so as to pass vertically through the central part of the upper and lower impeller chambers (33) (34), and the upper impeller (33) is mounted on the impeller shaft (35).
a) and the lower impeller (34a) are installed coaxially within the upper and lower impeller chambers (aa) (34), respectively,
The impeller shaft (35) is mounted on the pump casing (32) integrally with a pump drive motor (
M) is interlocked and connected to the drive shaft (39).

A rectifying plate (29) is provided protruding from the terminal end of the bath water suction path (32a) to improve pump efficiency by rectifying the bath water sucked into the lower impeller chamber (34).

Further, the upper impeller chamber (33) is connected to a lead-in pipe (41) of a filter (P) to be described later through a forced filtration passage (32c) provided on the - side of the upper impeller chamber (33).

(3B) is a mechanical seal that is lubricated by bath water attached to the impeller shaft (35), (39a) is the motor casing of the pump drive motor (M), (39b) is the rotor, (39c) is the fixed magnetic pole, (39d) is a cooling fan that also serves as a water slinger, (39o) is a cooling intake port, (39r) is a cooling exhaust port, (32e) is an intake port, (z
l) is the circulation flow direction, (z2) is the filtration flow direction, (34
b) is a communicating hole.

With the above configuration, when the pump drive motor (M) is rotated, the rotation of the bathtub body (B) - bath water suction pipe (10) - suction port (32e) - lower inflator chamber (34) - bath water forced feed path ( 32b) → The bath water is pumped in the order of the bullet conveying vibe (litter) → the bathtub body (B). Also, a part of the bath water sucked into the lower impeller chamber (34) is transferred to the lower impeller chamber (34).
→Communication flow path (32d) - Upper inflator chamber (33) - Lead-in pipe (40-Filter (F) -> Return pipe (42)
- The bathtub tube (11) - the bathtub body (B) are circulated in this order.

In addition, as shown in Fig. 5, the pressure transmission path of the pressure sensor (Sp) that detects the water level of the bath water is connected to the bath water circulation pump (P).
Bath water suction path (32a) (Opening in Ill wall (Spl)
A temperature sensor (T) for detecting the bath water temperature is provided in the lower impeller chamber (34). Therefore, the water level and temperature of the bath water in the bathtub body ([1)] are controlled by the bath water circulation pump ([1]).
#I is determined at position 1)).

The filter (P) is a downflow type filter that can backwash the filter medium,
As shown in Fig. 6, the assembly bolt (28c) is made by inserting the upper and lower shells (28r) (28g), each formed into a substantially cylindrical shape with a bottom, through the upper and lower flanges (28d) (28θ) provided around each opening. is connected to the filter body (43a
), a support net (43b) is stretched in the lower part of the filter body (43a), and upper and lower baffle plates (43d) (43f) are stretched above it at intervals, and the lower baffle plate (43r) and the support net (43b),
A bead-shaped filter medium (43c) is filled on the mesh body (43b).

A lead-in pipe connecting portion (4) is connected to the upper end of the filter body (43a) through a lead-in pipe (41) to the upper impeller chamber (33) of the bath water circulation pump (P).
1a) and an exhaust pipe connection part (28a) that communicates with the outside air via an exhaust pipe (28), and a bath water bomb delivery vibe (
11) is provided with a return pipe connecting portion (42a) that is communicatively connected to the return pipe connecting portion (42a). (28b) is a reinforcing rib, and (29a) is an O ring.

The electric three-way valve (Ve) is connected to the middle part of the lead-in pipe (4I), and a drain pipe (4B) is connected to one end of the three-way valve (Ve) to open the flow path of the three-way valve (We). By switching, the bath water from the upper impeller chamber (33) is filtered by passing it through four layers formed of filter media (43c) from top to bottom, or backwashing is performed, that is, the bath water is The bath water from the lower impeller chamber (34) of the circulation pump (P) is made to rise in the filter main body (43a) to break up the four layers and flow the filter material (43e).
3c) Clean the filter slag that has accumulated or adhered to the drain pipe (
46) to be discharged.

Next, various devices installed in the bathtub body (IS) will be explained.

Foot, dorsal, and chest nozzles (2) (3) (4)
Both use automatic variable spray nozzles having the same construction, each of which is configured to be able to automatically change the spray amount and pressure of bath water, and will be described with reference to FIG.

The jet nozzles (2) (3) (4) are connected to the bathtub body (II).
) A bottomed cylindrical nozzle body (20) attached to the spout nozzle connection port (9) opened on the side wall of the bathtub, and a valve seat formed into the nozzle body (20) from the bathtub body (B) side. A cylindrical body (2I) and a valve body (2I) for adjusting an ejection amount that approaches and separates from the rear from the valve seat (21a) formed on the cylindrical body (21) forming the same valve seat.
2), a nozzle valve advancing/retracting drive motor (Ml) that causes the jetting amount regulating valve (22) to perform the above-mentioned approaching/separating operation, and a swinging motor (Ml) at the front of the valve seat forming cylinder (21). It consists of a freely supported throat (24). In addition, an intake pipe connecting portion (20
b) is opened, and the inside of the valve seat forming cylindrical body (21) and the air intake portion (5) are communicated via the intake pipe (8).

In addition, a bullet feed pipe connecting portion (20c) is opened in the inner circumferential wall of the rear part of the nozzle body (20), and the inside of the rear part of the valve seat forming cylinder (21) and the bath water bullet feed pipe (l) are communicated with each other. ing.

The motor (Ml) for driving the nozzle valve body forward and backward is a stepping motor, and a ball screw mechanism (Bs) is interposed between the nozzle valve body (22) and the jet volume regulating valve body (22). 22) can be brought into and out of contact with the valve seat (21a). (23J) is a valve body position sensor consisting of a magnet and a magnetic Hall element.

With the above configuration, the bath water from the bath water circulation pump (1') passes through the gap between the valve seat (21a) and the spout amount regulating valve body (22), and the bath water is spouted from the valve seat (21a). This generates negative pressure, which allows air from the air intake part (5) to be mixed into the jetting bath vortex.Furthermore, by operating the motor (old) for driving the nozzle valve body forward and backward, the strength of the jetting of bath water can be increased. can be adjusted.

Although each of the jet nozzles (2), (3), and (4) have the same configuration, the motor (Ml) for driving the nozzle valve body forward and backward of each jet nozzle (2), (3, and 4) is controlled by the control unit ( C)
Therefore, each of the jet nozzles (2), (a), and (4) can take a different bath water jetting form.

As shown in FIG. 8, the air intake part (5) is connected to the bathtub body (
11), the top opening of the air intake body (80) is covered with a lid body (82) with openings on the left and right sides, and only on the outside of the lid body (82). The formed air intake port (82a) allows the inside of the air intake portion main body (80) to communicate with the outside air.

Further, the central portion of the bottom surface of the air intake main body (80) is communicated with each of the jet nozzles (2), (3), and (4) via an intake pipe (8). (92) is a silencer.

The control unit (C) is disposed on the substrate (CI), and as shown in FIG. 1, includes a microprocessor (5o),
Input/output interfaces (51) (52) and memory (
53) and an input interface (53).
The construction completion confirmation button (b), the valve body position sensor (23j), the temperature sensor (T), and the infrared signal receiver (
R1) is connected.

The output interface (52) includes an inverter (1),
Motor for driving the valve body for the nozzle (Ml), electric three-way valve (
We) and various indicator lamps, etc. are connected.

The memory (53) controls each motor (M) (old), electric three-way valve (We), etc. based on the signals from each of the above-mentioned sensors and the signal from the remote controller (R), and controls each jet nozzle. (2), (3), and (4) stores a program that allows six types of bath water blow modes and three types of variations for each blow mode 1 to be executed.

The remote controller (R), as shown in Figure 9,
On the front, there are a group of switches (R4) for controlling the bubble generating bathtub (^), such as an ONφOFF switch and each blow mode switch, and a liquid crystal panel (R5) that displays the operating status of the bathtub (^). In addition, an infrared signal transmitter (R3) is provided at the front end of the infrared signal transmitter (R3), which converts the electrical signals from each switch into a serial code signal set in advance for each switch. R3)
transmits infrared rays as a carrier.

The above-mentioned serial code signal is received by an infrared signal receiving section (R1), which will be explained next, is converted into an electric signal, and is inputted to the input interface (51) of the control section (C), and the signal is input to the memory (53). By controlling the operation of the corresponding actuator according to the control program stored in ), the bubble generating bathtub (^) can be placed in an operating state corresponding to the operation of each switch.

The infrared signal receiving section (R1), as shown in FIG.
An operation panel (
93), and the same panel (93) is equipped with various switches similar to the remote controller (R), an LED for displaying the operating status corresponding to each switch, and a filter cleaning switch. There is.

With the above configuration, actuators such as the pump drive motor (M) and the nozzle valve movement drive motor (Ml) can be operated by operating the remote controller (R) on the bath water surface or the switch operation on the operation panel (93). Control the rotation speed of the bath water circulation pump (P) and each spout nozzle (2)
(3) Adjust the opening/closing amount of the spout amount regulating valve body (22) in (4) to control the spout amount and spout pressure of bath water spouted from each spout nozzle, and control the spouting pressure to the various broad switches. You can select the blow mode and its variations for the corresponding bath.

In addition, by turning on and off the filtration-like cleaning switch provided on the operation panel (93), the electric three-way valve (vO) is switched for a certain period of time using the timer function of the in-control program, and the filtration machine (F) is turned on and off. It is possible to backwash the filter media.

Hereinafter, the operation of the bubble generating bathtub (^) will be explained based on the flowchart of FIG. 11.

Figure 11 shows the main routine, turning the power supply 0N (
200) Then, all the jet nozzles (2) (3) (4
) motor for driving the nozzle forward and backward (old) and inverter (1)
The output frequency and the like are initialized (210).

In addition, in the above initialized state, each jet nozzle (2)
(3) The valve body (22) in (4) is 6 a from the fully closed position.
The valve is open, allowing smooth supply and drainage of bath water.

During the above initialization, the bath water circulation pump (P) maintains the stopped state (2+5), and the control unit (C) controls the pressure sensor (Sp
) and temperature sensor (T), the temperature sensor (T) detects the bath water temperature (220
), If this is within the range of 5°C to 50°C (Y), detect the state of the operation switch (225), and if it is ON (Y), detect the bathtub water level from the output of the pressure sensor (Sp). (227), the water level is above which blow operation is possible (Y), and the temperature sensor (T) detects the bath water temperature (
230) If the water temperature is such that blowing operation is possible (Y), the subroutine is executed in accordance with input instructions for various blowing operations, filtration cleaning, etc. from the remote controller or operation panel (500).

Next, detect ON/OFF of the operation switch (99
5) If it is ON (Y), the process returns to step (230) and continues execution of the above subroutine.

Also, in step (220), if the water temperature does not allow blow operation (N), the bath water level is detected (235), and if it is higher than the water level that allows blow operation (Y), the bath water temperature is detected (237). ), if the temperature is less than 5° C. (Y), the antifreeze operation subroutine (300) is executed.

Note that if the bath water temperature is not below 5° C. in step (237) (N), a high water temperature warning (400) is issued and the operation is stopped (215).

In addition, if the water level is below which blow operation is possible in step (235) (N), a water level drop warning (410) is issued.
The blowing operation is stopped (215).

Note that the water level at which blowing operation is possible means that the water level of the bath water is at least higher than the water intake port (94) provided in the bathtub body (11) and the upper end position of the jet nozzle located at the highest point. The conditions are satisfied, and the bath '1II
II! ! When the temperature is within the range of 5°C to 50°C, the water temperature is considered to be suitable for blowing operation.

Claims (1)

[Claims] 1) A bath water circulation flow path is interposed between the bathtub body and a circulation pump installed outside the bathtub body, and air is introduced from an air intake portion connected to the flow path. In a bubble-generating bathtub configured to be able to eject bathwater mixed with bubbles from multiple jetting nozzles installed in the bathtub body while inhaling, the bathwater in the piping or circulation pump is A method of discharging hot water in a bubble-generating bathtub characterized by providing a safety water spouting control routine in which the hot water is spouted without causing any harm to the body even if the operation of the circulation pump is started while the temperature remains high. Safety water discharge control. 2) The safe water discharge control routine in claim 1 is implemented so that when the bath water in the piping or circulation pump remains high temperature, only the chest side spout nozzle is operated for a certain period of time in response to an instruction to start the bath water spout operation. Safe spouting control of hot water in a bubble-generating bathtub, characterized in that hot water is spouted from the bathtub. 3) Safe water spouting control for high-temperature hot water in a bubble-generating bathtub, in which the safe water spouting control routine in claim 1 is configured such that water is slowly spouted by an inverter that controls a motor for a bathwater circulation pump.