JP2000160654A - Hot water washing stool seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of waste water by connecting a pressure control valve making discharge pressure constant to an original solenoid valve for performing water feeding and shielding and supplying discharge water of the pressure control valve to a heater by a water pump to jet hot water from a nozzle. SOLUTION: When backside washing is selected and operated by a washing mode button, an original solenoid valve 2 is opened by the output of a microcomputer 13, and city water flows through the original solenoid valve 2 and a pressure control valve 3. After the discharge water of the pressure control valve 3 is supplied to a heater 5 by a rotation speed coincident with the backside washing to become hot water, it is supplied to a four-way valve 11 communicating with a nozzle 12 coincident with the backside washing through a flow sensor 8 to be jetted from the nozzle 12 as washing water. Even when the inlet water pressure of water supplied from a water inlet 1 is high, the downstream pressure of the pressure control valve is operated so as to be substantially previously set water pressure. Thus, when water energy is weakened by a water pump, the occurrence of waste water can be prevented because the pressure control valve throttles the valve.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water flush toilet seat that cleans by applying hot water to a local area.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent Application Laid-Open No. Hei 6-212679, a hot water flush toilet seat for cleaning by applying hot water to a local area is provided with a constant flow valve (7) and a water stop solenoid valve (from a tap water supply side). 8), a pump (10), a heater (14) for hot water, and a nozzle (2) in this order, and further, a minimum amount of water flowing from a constant flow valve between the water stop solenoid valve and the pump is discarded. A water channel (18) for draining as surplus water is provided.

[0003] The reason for securing the waste water channel described above is that even if the washing flow rate is reduced to a minimum, it is set so as to flow as waste water from the constant flow valve in order to satisfy the minimum water discharge rate determined by the Japan Water Supply Association. However, it is for draining the waste water.

More specifically, when the amount of water (A) flowing through the heater is set to be smaller than the amount of water (B) controlled by the constant flow valve, the amount of water (B)-
If the amount of water (A) is drained as waste water, the amount of water (B) controlled by the constant flow valve is set smaller than the amount of water (A) flowing to the heater by the rotation speed of the pump. Even if the rotation speed of the pump is increased, the amount of water (A) does not become larger than the amount of water (B).

For example, the water amount (B) of the constant flow valve is set to 1200
cc / min, and the water volume (A) by the pump is 20
When set to 0 cc / min, waste water of 1000 cc / min is drained, and the amount of water (A) by the pump is 500 c / min.
When set to c / min, 700 cc / m
In waste water is drained.

On the contrary, the water amount (B) of the constant flow valve is set to 200 cc.
/ Min, the water volume (A) by the pump is 20
0 cc / min or less, and the water flow (A) cannot be taken out at 200 cc / min or more due to the function of the constant flow valve.

[0007]

As described above, in the above-described configuration, the structure inevitably requires waste water from the beginning, and it is premised that waste water flows.

One of the present inventions is to save water by eliminating waste water, and the other is to drive a water pump even if the minimum water amount is drained as waste water in accordance with laws and regulations. Thus, even if the amount of water to be sent to the heater is reduced in accordance with the Water Supply Law, a large amount of water can be taken out.

[0009]

SUMMARY OF THE INVENTION One aspect of the present invention is a water supply,
A source solenoid valve for shielding, a pressure control valve connected to the source solenoid valve to make the water discharge pressure constant, a water pump for sending water from the pressure control valve, a heater for heating to obtain hot water, And a nozzle for injecting hot water from the heater.

Another one of the present invention is a main solenoid valve for supplying and shielding water, a pressure control valve connected to the main solenoid valve for keeping the discharge pressure constant, an orifice for keeping the discharge amount constant, and A water pump for sending water from the orifice, a heater for heating to obtain hot water, a nozzle for injecting hot water from the heater, and a drain connected to a water passage between the orifice and the water pump to drain excess water. A pressure relief valve is provided.

[0011]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a system diagram of the hot water flush toilet seat of the present invention,
FIG. 2 is an overall actual piping diagram, and FIG. 3 is a system diagram of another invention.

(1) a water inlet for taking in tap water;
(2) is a main solenoid valve for supplying and shielding water taken in from the water inlet, and (3) is connected downstream of the main solenoid valve so that the outlet pressure is predetermined even if the tap water pressure fluctuates. A pressure control valve that keeps the pressure constant, and operates so that the amount of water flowing to the heater decreases when the rotation speed of the water pump described later is low, and increases when the rotation speed of the pump is high. .

A water pump (4) is connected downstream of the pressure control valve (3) and varies the amount of water to a nozzle, which will be described later, depending on the number of revolutions. (5) is a water pump connected downstream of the water pump (4). A heater that heats water to obtain hot water,
The supplied water is continuously taken out as warm water. (6) is a water temperature sensor provided in a water channel (7) between the water pump (4) and the heater (5), (8) is a flow sensor provided downstream of the heater (5), (9) ) Is a hot water temperature sensor provided in a water channel (10) between the heater (5) and the flow rate sensor (8).

(11) A four-way valve connected downstream of the flow sensor (8), which switches according to the cleaning mode of the nozzle (12) connected downstream. The nozzle (12)
Are equipped with an ass, a bidet and a pre-assembly, and extend to a washing position by a motor (not shown) at the time of washing, and contract at the time of non-washing.

A microcomputer (13) controls each member according to the contents programmed in advance. For example, at the start of cleaning, the original solenoid valve (2) is opened, and the water pump (4) is rotated at a rotation speed corresponding to the cleaning mode. The amount of heat generated by the heater (5) is controlled based on the water temperature detected by the water temperature sensor (6) and the hot water temperature detected by the hot water temperature sensor (9), and the four-way valve (11) is operated according to the cleaning mode. Switch.

(14) a sub-tank for temporarily storing hot water heated by the heater (5); (15) a substrate on which electric parts such as the microcomputer (13) are mounted;
6) and (16) are switched as necessary, for example, when the temperature of tap water is high, so that hot water from the heater (5) is passed directly to the nozzle (12) without being stored in the sub-tank (14). A valve, (17) is a base surrounding the above members, and (18) is a nozzle (1) rotatably connected to the base.
This is a toilet seat facing 2).

Next, the operation will be described. When, for example, “bottom washing” is selected and operated by a washing mode button (not shown), the original solenoid valve (2) is opened by the output of the microcomputer (13), and tap water is supplied from the water inlet (1) to the original solenoid valve ( Water is passed through 2) and the pressure control valve (3).

The outflow of the pressure control valve (3) is "washing ass".
After the water is fed into the heater (5) by the rotation speed "high" according to the temperature and becomes hot water, the four-way valve (11) which passes through the flow rate sensor (8) to the nozzle (12) suitable for "butt washing" is used.
The hot water is supplied to the nozzle, and is jetted from the nozzle (12) as washing water.

The above is a description of the basic flow of water and hot water. The water supplied from the water inlet (1) is increased by the pressure control valve (3) even if the inlet water pressure (primary pressure) is increased. It works so that the downstream pressure (secondary pressure) of the pressure control valve becomes approximately a preset water pressure.

Therefore, for example, when the rotation speed of the water pump (4) is low and the amount of water is low, and the secondary pressure of the pressure control valve (3) increases, the pressure control valve lowers the secondary pressure to a set value. In order to reduce the amount of water flow, waste water will no longer flow.

Conversely, when the rotation speed of the water pump (4) is high and the amount of water is large and the pressure on the inlet side of the water pump (4) is low, the pressure control valve (3) reduces the water pressure to the set secondary pressure. In order to recover, the valve opens and the amount of water increases, and the secondary pressure also rises to the set value. At this time, no waste water is generated.

FIG. 3 shows that the minimum water discharge in the water supply law determined by the Japan Water Supply Association is determined to be 30 liters per hour (500 cc per minute) or more from the relationship of the sensitivity of the meter. Also, even when the minimum water usage is 500 cc / min, a larger amount of hot water can be injected from the nozzle. Members having the same figure numbers as those shown in FIG. 1 have the same functions. An orifice (19) is provided in a water passage (20) between the pressure control valve (3) and the water pump (4), and the water amount on the outflow side is constant even if the water amount on the inlet side changes. . A pressure relief valve (21) is connected to a water channel (20) between the orifice (19) and the water pump (4) to drain excess water.

The operation of the invention shown in FIG. 3 is described below. The orifice (19) is previously drained as waste water without driving the water pump (4), and the flow rate at this time is set to the minimum used water amount of 500 cc. / Min.

In this state, when the water pump (4) is driven and the amount of water to be sent to the heater (5) is set at 200 cc / min, the pressure relief valve (21) supplies 500 cc / min-2.
A water difference of 00 cc / min = 300 cc / min is drained.

On the other hand, when the amount of water sent to the heater (5) by driving the water pump (4) is set to 500 cc / min or more, the amount of water discharged from the pressure relief valve (21) is equal to or more than the minimum amount of water used. It is 0 cc / min because of the setting.

At this time, even if the water pump (4) is driven, the set flow rate of the orifice (19) (500 cc / mi)
Although it may be erroneously recognized that a larger amount of water than n) cannot be taken out, the function of the pressure control valve (3) reduces the pressure on the downstream side of the orifice (19) and decreases the pressure on the upstream side of the orifice (19). Is reduced, the pressure control valve (3) works to maintain the secondary pressure at the set pressure and opens the valve. As a result, the flow rate increases and the water pump (4) drives the water pump (4) to 500 cc /. min or more, for example, at a flow rate of 1000 cc / min.

[0027]

As described above, according to the present invention, a pressure control valve for maintaining a constant water discharge pressure is connected to an original solenoid valve for supplying and shielding water.
Since the water from the pressure control valve is sent to the heater by the water pump and the hot water is injected from the nozzle, if the water pressure by the water pump is weakened, the pressure control valve narrows the valve so that no waste water is generated.

On the other hand, when the water pressure of the water pump is increased, the amount of water increases because the pressure control valve opens the valve to restore the set water pressure, and the pressure on the outlet side of the pressure control valve also increases, so that no waste water is generated. Water can be saved.

Further, according to laws and regulations, the construction is such that the minimum amount of water discharged is ensured. Even if the water pump is driven to reduce the amount of water sent to the heater, a large amount of water can be taken out. You can do it.

[Brief description of the drawings]

FIG. 1 is a system diagram of a warm water flush toilet seat of the present invention.

FIG. 2 is an overall physical piping diagram of the same.

FIG. 3 is a system diagram of another invention.

[Explanation of symbols]

 1 water inlet 2 way solenoid valve 3 pressure control valve 4 water pump 5 heater

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nori Matsumura 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Inside Sanyo Electric Co., Ltd. (72) Inventor Takao Kishimoto 3-201 Minamiyoshikata, Tottori City, Tottori Sanyo Tottori (72) Inventor Yoshihiro Hosokawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. (reference) 2D038 JA00 JB02 JB05 JF05 JH00 JH12 2D039 AA02 AE04 DA00 FC00

Claims (2)

[Claims] 1. A source solenoid valve for supplying and shielding water, a pressure control valve connected to the source solenoid valve to maintain a constant water discharge pressure, a water pump for supplying water from the pressure control valve, and a hot water heater. And a nozzle for jetting hot water from the heater. 2. A main solenoid valve for supplying and shielding water, a pressure control valve connected to the main solenoid valve for making the water discharge pressure constant, an orifice for making the amount of water constant, and sending water from the orifice. A water pump, a heater for heating to obtain hot water, a nozzle for injecting the hot water from the heater, and a pressure relief valve connected to a water channel between the orifice and the water pump to drain excess water are provided. A warm water flush toilet seat.