JPH0645503Y2 - Sanitary washing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sanitary washing device having a local washing function,
In particular, it relates to a piping system for sending cleaning water to the nozzle device.

[Conventional technology]

2. Description of the Related Art Conventionally, a sanitary washing device that jets heated washing water locally to wash it has been used as an integral or separate type of toilet bowl. As an example of integration with a toilet bowl, for example, Japanese Patent Publication Sho 62
-15689 and Japanese Examined Patent Publication No. 63-26207, and other various structures have already been developed.

In these sanitary washing devices, the basic structure for local washing is to provide a nozzle that moves back and forth from the inside of a casing integrated with a toilet bowl to a washing position, and to provide a heating tank for supplying hot water to this nozzle. is there. Such a structure is adopted in most of the conventional sanitary washing devices, and proper control of the hot water temperature and optimization of the washing position by changing the stroke of the nozzle are further advanced.

On the other hand, since the hot water supply facility is connected to the unit bath, an external water supply source and a hot water supply source can be connected to the nozzle device. Therefore, if the casing is provided with a mixing valve that mixes water supply and hot water supply from the outside instead of the heating tank, it is possible to supply the water mixture at an appropriate temperature to the nozzle device.

[Problems to be solved by the device]

When locally cleaning using a sanitary washing device, the flow rate of washing water ejected from the nozzle device is relatively small. For this reason, it is necessary to flow a flow rate that is equal to or greater than the dead water amount instructed by the Waterworks Bureau, etc., and it is common practice to discard the wash water in order to compensate the flow rate in addition to the wash water sent to the nozzle device. In other words, a structure is adopted in which the flow rate of water passing through the water meter is set to be equal to or greater than the dead water amount, and excess water not required for cleaning is thrown into the bowl of the toilet bowl. For example, there is a device designed to wash the tip of the nozzle. .

In addition, a vacuum breaker is provided in the pipe to the nozzle device so that the inside of the pipe does not become a negative pressure. This has a function to keep the inside of the pipe at a positive pressure by connecting the inside of the pipe to the outside by a valve element that can be opened to the atmosphere and sucking air after the water has been sent in, and preventing the backflow of washing water. .

However, since a pipe system for discarding excess water is provided in addition to the pipe to the nozzle device, it is necessary to provide a vacuum breaker on both the nozzle device and the pipe for discharging excess water. For this reason, conventionally, separate vacuum breakers have been provided in the nozzle side and the excess water side pipelines. However, since two vacuum breakers are required, the piping becomes complicated and thus the assembly is troublesome, and the number of parts increases, which is also disadvantageous in terms of cost. Further, the space occupied by the vacuum breaker also affects the layout of other devices, which is an obstacle to downsizing of the sanitary washing device.

Then, this invention aims at providing the piping structure which can prevent the negative pressure generation of the flow path of the nozzle side and the surplus water discharge side with one vacuum breaker.

[Means for Solving the Problems]

The sanitary washing device of the present invention achieves the above objects.
A sanitary washing device comprising a nozzle device for jetting washing water locally and a pipe system for supplying washing water to the nozzle device, and further a vacuum breaker open to the atmosphere in the pipe system leading to the nozzle device. The secondary side of the vacuum breaker is connected to a discharge path of a system different from the flow path to the nozzle device.

〔Example〕

Hereinafter, the features of the present invention will be specifically described with reference to the embodiments shown in the drawings.

FIG. 1 is a plan view of the inside of a sanitary washing device showing an embodiment of the present invention.

The sanitary washing device has various devices incorporated in its casing 1, and these devices are fixed to a mounting substrate 1a. FIG. 2 shows the installation situation, and the casing 1 is fixed to the toilet body C arranged in front of the washbasin B in the unit bath integrally provided with the bathtub A and the washbasin B.

The mounting substrate 1a has a valve unit 2 connected to an external water supply and hot water supply source, a nozzle device 3 for ejecting cleaning water, an operation unit unit 4 for activating these devices, and a built-in lithium battery for driving a control system. The power supply unit 5 and the control circuit board 6 are fixed.

The valve unit 2 includes a water supply pipe 2c and a hot water supply pipe 2d connected to an external water supply pipe 2a and a hot water supply pipe 2b, and incorporates a thermostat mixing valve TH having an automatic temperature control function as a mixing valve. Further, a drain hot water solenoid valve 7a is provided in the flow path from the hot water pipe 2d to the thermostat mixing valve TH, and a water discharge solenoid valve 7b is incorporated downstream.
FIG. 3 shows a water flow system. A constant flow valve 7c, a vacuum breaker 7d, and a distribution valve 7e are provided downstream of the water discharge solenoid valve 7b, and the distribution valve 7e discharges water to the nozzle device 3 side and It is distributed to the wastewater side. Further, a wastewater discharge pipe 2e is connected to the wastewater solenoid valve 7a and is connected to an external wastewater pipe 2f.

The drain hot water solenoid valve 7a is provided for discarding the cold hot water in the hot water supply pipe 2b and the hot water supply pipe 2d, and detects the temperature of the hot water by the temperature sensor arranged upstream of the hot water supply pipe 2b and the hot water supply pipe 2d. The drain hot water solenoid valve 7a is opened to control the discharge of hot water. In addition, the nozzle side drainage pipe 7f is connected to the distribution valve 7e as a discharge path, and at the same time as supplying hot water to the nozzle device 3 side, the toilet body C
Is discharged to the ball. In this way, the purpose of discarding the hot water from the distribution valve 7e is to ensure the flow rate in the thermostat mixing valve TH because the temperature sensing part does not operate properly unless the flow rate per unit time is a certain amount or more. This is because it is also used for countermeasures against dead water. The vacuum breaker 7d has an overflow pipe of 7g.
Is connected, and overflow water is discharged to the bowl of the toilet body C in the same manner as the nozzle side drainage pipe 7f.

FIG. 4 (a) is a vertical cross-sectional view of the vacuum breaker 7d,
FIG. 6B is a sectional view taken along the line I-I of FIG.

The main body 20 of the vacuum breaker 7d is formed so as to include the distribution valve 7e, and the chamber 20 in which the float valve 21 is housed
An inlet 20b communicating with the discharge port of the thermostat mixing valve TH is provided at a. A valve seat 20c on which the valve body portion 21a of the float valve 21 is seated is formed in the chamber 20a, and a cap 22 is fixed to the main body 20 for penetrating a shaft portion 21b protruding upward from the valve body portion 21a. A hole 22a having a larger diameter than the shaft portion 21b of the float valve 21 is opened in the cap 22, and an overflow pipe 7g is connected to the peripheral wall.

Further, a sleeve 23 is projected to the side of the chamber 20a,
The needle 24 of the distribution valve 7e is housed inside thereof so as to be movable in the axial direction. On the peripheral wall of the sleeve 23, a nozzle-side connecting portion 23a for connecting the supply pipe 3a to the nozzle device 3 and a drain-side connecting portion 23b for connecting the nozzle-side drain pipe 7f are formed. And, the needle 24 has these connecting portions 23a,
The flow path to 23b is inserted at a position where it can be opened and closed, and a waste water flow path 24a is formed inside the tip. As shown in FIG. 4 (b), the drainage channel 24a is formed in the peripheral wall of the needle 24 so as to be able to communicate with the channel in the drainage side connecting portion 23b.

The needle 24 is operated by a water pressure adjusting knob 4a provided in the operation unit 4, and a flexible shaft 4b using a wire or the like for transmitting a rotational operation force is provided between the needle 24 and the needle 24. When the water pressure adjusting knob 4a is rotated, the needle 24 moves in the axial direction while rotating in the sleeve 23 by the flexible shaft 4b. Therefore, when the needle 24 is moved to the left from the state of FIG. 4 (b) in which the flow path to the nozzle-side connecting portion 23a is closed, the flow path to the nozzle-side connecting portion 23a opens and the drainage-side connecting The flow path to the part 23b is also kept open by the drainage flow path 24a. In this way, by moving the needle 24, the washing water can be supplied to the nozzle device 3 side and the drainage water at the same time, and the downstream of the vacuum breaker 7d is divided into a washing water supply system and a drainage system. Will be things.

The nozzle device 3 is provided with a cylinder 3b having a supply pipe 3a connected to the upper end and a telescopic nozzle 3c, and has a configuration in which the telescopic nozzle 3c is advanced to the cleaning position by the water pressure of the cleaning water flowing from the supply pipe 3a. In addition, since the position of the ejection hole of the nozzle device 3 is changed to move the cylinder 3b forward so that it can be used for anus washing and bidet, this cylinder 3b is used.
Are supported by the frame 8. The advancing operation of the cylinder 3b is performed by a rotary shaft 9 rotatably mounted on the frame 8 and a link rod 9a fixed to the rotary shaft 9 and having its tip connected to the cylinder 3c. The rotating operation of the rotating shaft 9 is performed by the switching knob 10 provided in the operation unit 4 and the wire 11 connecting between the switching knob 10 and the rotating shaft 9. Also,
Reference numerals 12 and 13 are guide pulleys for guiding the wire 11.

In the above structure, water and hot water are mixed by the thermostat mixing valve TH as shown in FIG. 3, and the mixed water is supplied to the nozzle device 3 by opening the water discharge solenoid valve 7b. At this time, the float valve 21 is opened by the water pressure of the wash water, the wash water flows into the chamber 20a of the vacuum breaker 7d, and then the nozzle side connection 23a to the nozzle device 3 and the waste water side connection portion 23b to the nozzle side. Run off into the wastewater pipes 7f.

When the supply of cleaning water is stopped, the float valve 21 is closed by its own weight, and air flows in through the gap between the hole 22a of the cap 22 and the shaft portion 21b. Therefore, the flow path downstream of the float valve 21 does not have a negative pressure, and the backflow of the wash water from the nozzle device 3 and the nozzle-side drainage pipe 7f is prevented. If a back flow occurs or the flow rate of wash water is excessive, overflow pipe
Emitted from 7g.

In this way, since the supply passages to the nozzle device 3 side and the drainage side are connected to the downstream of the vacuum breaker 7g, it is not necessary to use two vacuum breakers as in the conventional case. Therefore, the piping system including the vacuum breaker 7d can be easily assembled and the number of parts can be reduced, which is advantageous in terms of cost. Further, since the space occupied by the vacuum breaker 7d is reduced, the degree of freedom in layout of other devices is increased, and the casing 1 can be downsized.

[Effect of device]

As described above, in the sanitary washing device of the present invention, one vacuum breaker is incorporated in the piping system, and the nozzle device and the discharge passage for discharging excess water are connected to the inner secondary side. Therefore, as compared with the conventional case in which the vacuum breaker is provided on both the nozzle device side and the discharge path side, the assembly is simplified and the number of parts is reduced, so that the cost is improved. Further, since the installation space for the vacuum breaker can also be used as a storage portion for other equipment, the equipment can be enriched and the device can be downsized.

[Brief description of drawings]

FIG. 1 is an internal plan view of a sanitary washing device showing an embodiment of the present invention, FIG. 2 is a perspective view showing an installation situation in a unit bath, and FIG. 3 is an explanatory view showing a water flow system. 4 (a) is a vertical cross-sectional view of the vacuum breaker, and FIG. 4 (b).
FIG. 3 is a sectional view taken along the line I-I of FIG. 1: Casing, 1a: Mounting board 2: Valve unit, 2a: Water supply pipe 2b: Hot water supply pipe, 2c: Water supply pipe 2d: Hot water supply pipe, 2e: Waste water discharge pipe 2f: Waste water pipe, 3: Nozzle device 3a: Supply Pipe, 3b: Cylinder 3c: Telescopic nozzle, 4: Operation unit 4a: Water pressure adjustment knob, 4b: Flexible shaft 5: Power supply unit, 6: Control circuit board 7a: Discharged solenoid valve, 7b: Water discharge solenoid valve 7c: Constant flow valve, 7d: Vacuum breaker 7e: Distribution valve 7f: Nozzle side drainage pipe (exhaust passage) 8: Frame, 9: Rotating shaft 9a: Link rod, 10: Switching knob 11: Wire, 12, 13: Guide pulley 20: Main body, 20a: Chamber 20b: Inflow portion, 20c: Valve seat 21: Float valve, 21a: Valve body portion 21b: Shaft portion, 22: Cap 22a: Hole, 23: Sleeve 23a: Nozzle side connection portion 23b: Discard Hot water side connection, 24: Needle 24a: Waste water flow path TH: Thermostat mixing valve

Claims (1)

[Scope of utility model registration request] 1. A sanitary apparatus comprising a nozzle device for locally ejecting cleaning water, a piping system for supplying the cleaning water to the nozzle device, and a vacuum breaker open to the atmosphere in the piping system leading to the nozzle device. A sanitary washing device, characterized in that a discharge passage of a system different from a flow passage to the nozzle device is connected to a secondary side of the vacuum breaker.