JP2666482B2 - Hot water washer directly connected to tap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial application field >> The present invention relates to a hot water washer directly connected to a water supply installed in a Western-style toilet and the like, and in particular, surely satisfies a dead water amount regulation provided by the Japan Water Works Association. Another object of the present invention is to provide an easy-to-use hot water washer directly connected to a tap.

<< Prior Art >> Generally, a water supply directly-connected hot water washer is as shown in the flow charts of FIGS. 7 to 9.

That is, as shown in FIG. 7, the water supplied from the water supply source 1 passes through the electromagnetic valve 2 and is separated from the main flow path 5 and the drain water flow path by the branch portion 9 provided between the electromagnetic valve 2 and the flow control valve 3. 6 distributed.

In the main flow path 5, the water branched from the branch section 9 is adjusted in flow rate through the flow rate control valve 3, then heated in the hot water tank 4 and discharged from the nozzle 7 as washing water 17.
On the other hand, in the water drain passage 6, surplus water, which becomes the water 18 from the water branched from the branch portion 9, is discharged into a toilet (not shown).

A block diagram shown in FIG. 8, a flow control valve 3 shown in FIG.
Is an example using a three-way valve flow control valve 3a instead of
The flow control valve 3a controls the flow rate and branches the flow path into a main flow path 5 and a drainage flow path 6. In addition, vacuum breakers 8, 8 are provided in the middle of the waste water flow path 6 and after the hot water tank 4 in the main flow path 5.

The block diagram shown in FIG. 9 is an example in which a flow control valve 3 and a distribution valve 29 are provided instead of the flow control valve 3a of the three-way valve shown in FIG. 8, and the flow control valve 3 controls the flow rate. The distribution valve 29 branches the flow path into the main flow path 5 and the drainage flow path 6.

Also in this block diagram, vacuum breakers 8, 8 are provided at the same locations as those in the block diagram shown in FIG.

Therefore, as is apparent from the above-described configuration, the common points of the block diagrams shown in FIGS. 7 to 9 are that the flow path is set so as to satisfy the dead water amount regulation stipulated by the Japan Water Works Association for the hot water washer directly connected to the water supply. The point is that the water supply amount is divided into the main flow path 5 and the waste water flow path 6 so that the water supply amount can be secured at 50 / Hr or more when the water supply pressure is 1 kgf / cm ² . It is also necessary to provide a vacuum breaker to satisfy the regulations of the Japan Water Works Association.

<< Problems to be Solved by the Invention >> However, in the flow chart of such a conventional hot water washing device directly connected to a water supply, the system shown in FIG. Even if they are arranged in the drainage flow path 6, when the flow control valve 3 is fully opened, 50 / Hr or more water must be flown in the drainage flow path in order to satisfy the dead water amount regulation provided by the Japan Water Works Association. In addition, there was a problem that water wasted.

Further, in FIG. 8, the structure of the flow control valve 3 becomes complicated, and when the flow control valve 3 is throttled in FIG. 9, there is a possibility that the flow rate of the discarded water becomes less than the dead water amount.

Further, in FIGS. 8 and 9, it is necessary to provide the vacuum breakers 8 in both the main flow rate 5 and the waste water flow path 6, and there is a problem that the flow paths become complicated.

<< Means for Solving the Problems >> The present invention has been made in view of the above circumstances, and its purpose is to surely satisfy the dead water regulation,
To provide a compact, easy-to-use hot water flusher directly connected to a water supply, in order to achieve the above object, pipe a solenoid valve, a water flow control valve, a vacuum breaker, a water flow sensor, a hot water tank, and a nozzle in this order from the water supply source. The water flow rate control valve is provided with a main flow path in which feedback control is performed by the water flow rate sensor via a control circuit, and a drainage flow path having an orifice between the vacuum breaker and the water flow rate sensor. .

<< Operation >> In the present invention, as shown in the flow chart of FIG. 1, the main flow path 5 is provided from the water supply source 1 in the order of the solenoid valve 2, the water flow control valve 10, the vacuum breaker 8, the water amount sensor 12, the hot water tank 4, and the nozzle 7. The water flow control valve is fed back through the control circuit 19 by the water flow sensor 12 via the control circuit 19, and the drainage flow path 6 is connected to the vacuum breaker 8 and the water flow sensor 12.
The orifice 11 is piped from the gap, and the main flow path 5 and the drainage flow path 6 are provided to ensure compliance with the dead water amount regulation provided by the Japan Water Works Association. To perform a vacuum break at the same time.

<< Embodiment >> Hereinafter, a water supply directly-connected hot water washer according to the present invention will be described in detail with reference to FIGS. 2 to 6. FIG.

The same parts as those in the above-mentioned conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 2, in the hot water washing device directly connected to a water supply according to the present invention, water is supplied from the water supply source 1 to the hot water washing device main body 26 through the water stop valve 1a, the check valve 1b, and the connection fitting 1c.

Further, in the hot water washer body 26, the main flow path 5 which is arranged in the order of the solenoid valve 2, the governor 21, the water amount control valve 10, the vacuum breaker 8, the water amount sensor 12, the hot water tank 4, and the nozzle 7, the vacuum breaker 8 and the A water drain passage 6 having an orifice 11 is provided from a branch portion 9 between the water amount sensors 12, and a vacuum breaker tube 28 is provided between the toilet 25 side of the water discharge passage 6 and the vacuum breaker 8. The water supplied into the hot water washer body 26 via the passages 5 and 6 discharges water.

Further, a control circuit 19 is provided in the hot water cleaning device main body 26. When a user presses a cleaning switch 22 provided in a panel 27 during a cleaning operation, the electromagnetic valve 2 is controlled via the control circuit 19. The control circuit 19 outputs an output 24b for operating the DC motor 13 in response to the output 23 from the water amount sensor 12, and rotates the water amount control valve 10 through the reduction gear 20. It is configured to perform a series of cleaning operations such as performing feedback control.

Next, in the block diagram shown in FIG. 2 having the above-described configuration, a water amount control portion for performing water amount control will be described in detail with reference to FIG.

The water volume control part is a cylindrical valve inside the valve body 30.
The valve 15 is rotatably accommodated, and a slit 14 communicating with an opening 16 formed in the valve body 30 is formed on the outer peripheral surface of the valve 15. Also, this slit 14 is a valve
It is provided so that its width continuously increases as the 15 rotates.

Further, one end of the valve 15 is connected to a DC through a reduction gear 20.
The motor 13 is connected, and the rotation of the DC motor 13 that has been decelerated and increased in torque is transmitted to the valve 15.

That is, with the above-described configuration, the width of the slit 14 is increased or decreased by the rotation of the valve 15, and the opening area of the opening 16 is changed to control the amount of water.

On the outside of the valve body 30, a vacuum breaker body 31 for accommodating a vacuum breaker is fixed, and the slit 14 in the vacuum breaker body 31 is opened through an opening 16 formed in the valve body 30. Communicate.

Further, a connection port 5a connected to the main flow path 5 and a connection port 6a connected to the waste water flow path 6 and having an orifice 11 therein are provided at the upper end of the vacuum breaker body 31.

Next, the operation of the above configuration will be described with reference to FIG.

When the user presses the washing switch 22 provided on the operation panel 27, the control circuit 19 opens the solenoid valve 2 and drives the DC motor 13 to drive the water control valve via the reduction gear 20.
Open 10 gradually. As a result, water from the water supply source 1 is turned off.
1a, the check valve 1b, and the connection fitting 1c flow into the hot water washer body 26.

The water flowing into the hot water washer body 26 is
And governor 21, water flow control valve 10, vacuum breaker 8
, To the branching section 9, where the water is distributed to the main flow path 5 and the waste water flow path 6.

Then, in the main flow path 5, the water branched from the branch section 9 is heated to the appropriate temperature water in the hot water tank 4 via the flow rate sensor 12 and discharged from the nozzle 7 as washing water 17, while in the drain water flow path 6, Drain the branched water through orifice 11
As 18, water is discharged into the toilet 25.

Further, the control circuit 19 compares the amount of washing water detected by the flow rate sensor 12 with the specified amount of water stored in the control circuit 19, and when the amount of washing water is less than the specified amount of water, the water amount control valve 10 is turned on. The DC motor 13 is rotated via the reduction gear 20 so as to be in the opening direction, while when the amount of washing water is larger than the specified amount of water, the DC motor 13 is rotated in a direction to throttle the water amount control valve 10 so that the amount of washing water is automatically adjusted. The feedback control is maintained to be constant.

Next, the operation of the water amount control section for controlling the water amount in the above operation will be described in detail with reference to FIG.

Water flowing into the valve body 30 from the solenoid valve 2 flows into a cylindrical valve 15 rotatably provided in the valve body 30, and is formed in the slit 14 provided in the valve 15 and the valve body 30. Through the opening 16, it reaches the inside of the vacuum breaker body 31. In this case, the water flow path 6 is branched from the main flow path 5, and water is supplied to the main flow path 5 by a flow sensor.
Water is discharged as washing water through 12 and water is discharged as water through the orifice 11 provided in the connection port 6a in the water-discharge channel 6.

Further, the control circuit 19 compares the amount of washing water detected by the water amount sensor 12 with the specified amount of water stored in the control circuit 19, and when the amount of washing water is less than the specified amount of water,
The DC motor 13 is moved in a direction in which the opening area of the slit 14 provided in the valve 15 is increased, while the DC motor 13 is moved in a direction in which the opening area of the slit 14 provided in the valve 15 is reduced when the amount of washing water is larger than a specified amount of water. As a result, feedback control of the washing water amount is performed.

It should be noted that the opening area of the orifice 11 is such that when the washing water 17 flowing through the main flow path 5 has a specified minimum water amount stored in the control circuit 19, the dead water amount specified by the Japan Water Works Association (50 /
Hour = 834cc / min).

That is, since the minimum flushing water amount of this type of equipment is about 500 cc / min, if the orifice diameter is determined so that the flushing water is discharged to the toilet as 334 cc / min or more when the flushing water amount is 500 cc / min, water is wasted. It is possible to always satisfy the dead water regulation of the Japan Water Works Association without having to flush much water.

Next, the governor, the water flow control valve, and the vacuum breaker are integrated into one part, and
This will be described in detail with reference to FIGS.

As shown in FIGS. 4 and 5, a vacuum breaker body 31 accommodating the vacuum breaker 8 is screwed to an upper end of the valve body 30 as shown in FIGS. DC motor that constitutes control valve
A cover 33 for accommodating 13 is screwed to the valve body 30.

Next, these internal structures will be described in detail with reference to FIG.

That is, the DC motor 13 is fixed to the valve body 30 by the motor mounting plate 34, and a worm gear is mounted on the shaft of the DC motor 13 so that the reduction gear 20
Power is transmitted to the valve 15 through the valve.

Further, on the outer peripheral surface of the valve 15, there is provided a slit 14 having a shape having a width that continuously expands with the rotation of the valve 15, and communicates with an elongated opening 16 formed in the valve body 30. Thus, a water amount control valve is formed.

Further, a governor receiver 32 is provided at a lower end of the valve body 30, and a rubber governor is provided in the governor receiver 32.
21 are stored. In other words, this rubber governor 21
Is deformed when the water supply pressure is increased and pressed against the governor receiver 32, so that the inner diameter of the central portion is reduced, and has a governor action.

Note that the valve body 30 and the valve 15 are formed of plastic.

Further, the slit 14 provided in the valve 15 is formed so that the slit width increases with the rotation, and by appropriately selecting a gradient at which the slit width expands, the opening of the valve 15 is maintained under a constant water supply pressure. And the amount of water can be changed almost linearly.

Further, a reduction gear 20 connected to the valve shaft 15
The boss is provided at each of two points, a start point and an end point, to define the valve rotation range, and two stoppers are provided on the valve body 30 so that the start point and the end point of the DC motor 13 are determined. ing.

<< Effects of the Invention >> As described above, the present invention, while the water amount control valve is feedback-controlled by the water amount sensor to keep the washing water amount constant, and when the washing water amount is the minimum washing water amount by the orifice provided in the waste water flow path, Since the amount of water discarded is set so as to satisfy the dead water regulation specified by the Japan Water Supply Association, the dead water regulation can be reliably maintained.

In addition, by providing a drainage channel from between the vacuum breaker and the water amount sensor, the vacuum breaker can perform a vacuum break of the main channel and the drainage channel with one vacuum breaker, so that the cost of the device can be reduced.

Further, according to the second aspect of the present invention, the size of the apparatus can be reduced by integrating the governor, the DC motor, the reduction gear, the valve, and the water amount control valve including the valve body and the vacuum breaker housed in the vacuum body. Can be planned.

According to the fourth aspect of the present invention, since the slit shape formed in the valve has a structure in which the slit width continuously increases as the valve rotates, the valve opening and the amount of water passing through the slit are linear under a constant water supply pressure. A related flow control valve can be provided.

Further, according to the fifth aspect of the present invention, since the valve shaft is made of plastic, it is possible to prevent the slit from being clogged by rust and to prevent the valve shaft from being tight.

[Brief description of the drawings]

FIG. 1 is a flow chart showing the operation of the cleaning device of the present invention, FIG. 2 is a block diagram of a hot water cleaning device directly connected to a tap to which the present invention is applied,
FIG. 3 is an enlarged sectional view of a water amount control part shown in FIG.
FIG. 5 is a front view showing a second embodiment of the water amount control part shown in FIG. 2, FIG. 5 is a plan view of FIG. 4, FIG. 6 is a sectional view taken along line AA of FIG. FIG. 9 to FIG. 9 are flowcharts of a conventional hot water washing device directly connected to a tap. DESCRIPTION OF SYMBOLS 1 ... Water supply source 2 ... Solenoid valve 4 ... Hot water tank 5 ... Main flow path 6 ... Waste water flow path 7 ... Nozzle 8 ... Vacuum breaker 9 ... Branch part 10 ... Water amount control valve 11 ... Orifice 12 Water sensor 19 Control circuit

Claims (5)

(57) [Claims] 1. A main flow in which a solenoid valve, a water amount control valve, a vacuum breaker, a water amount sensor, a hot water tank, and a nozzle are piped in this order from a water supply source, and the water amount control valve performs feedback control via the control circuit by the water amount sensor. Road and
A hot water washer directly connected to a water supply, wherein a drainage flow path having an orifice is provided between the vacuum breaker and the water amount sensor. 2. A water supply direct connection type according to claim 1, wherein a governor is provided between said solenoid valve and said water amount control valve, and said governor, said water amount control valve and a vacuum breaker are integrated parts. Hot water washer. 3. The hot water washing device according to claim 1, wherein said water amount control valve is constituted by a cylindrical valve directly connected to a DC motor and a reduction gear and having a slit on an outer peripheral surface. 4. The hot water cleaning system according to claim 3, wherein the slit provided on the outer peripheral surface of the valve is formed in a shape in which the slit width is continuously enlarged as the valve rotates. vessel. 5. The hot water washer according to claim 3, wherein the valve is made of plastic.