JP2629840B2 - Sanitary washing equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary washing device for washing a human body or the like with warm water.

2. Description of the Related Art In general, it is necessary for hemorrhoid patients and women to keep their local areas clean and hygienic, and in recent years, sanitary washing devices for cleaning local areas have become widespread in general households.

Conventionally, this type of sanitary washing device has been disclosed in, for example, Japanese Utility Model Publication No. 60-3184.
As disclosed in Japanese Unexamined Patent Publication (Kokai) No. 6-264, the channel configuration was as shown in FIG.

That is, from the water supply source 50, a water supply valve 51, a distribution unit 52, a flow control valve 53, a hot water tank 54, an intake valve 55, a vacuum breaker
56, a jet nozzle 57 which is a washing nozzle is sequentially connected to form a main water channel, and further, a vacuum breaker 58,
A sub waterway composed of a discharge port 59 is connected. The operation principle of the above configuration is that when the user opens the water supply valve 51, the water supply source 50 is opened.
Flows into the main water channel, and is heated by the hot water tank 54 to become hot water, which is jetted from the jetting portion 57 which is a washing nozzle, and used for washing. On the other hand, water branched from the distribution section 52
From the toilet. When the user wants to adjust the cleaning flow rate, it can be performed by adjusting the flow rate control valve 53.

In addition, in the case where the water supply source 50 has a negative pressure due to interruption of water or an abnormal state, the vacuum breakers 56 and 58 provided in the main water passage and the sub water passage are configured to prevent suction of sewage from the nozzle. .

Problems to be Solved by the Invention However, in the above configuration, when the water supply source 50 is a tap water, the washing flow rate changes due to a change in tap water pressure. This type of sanitary washing device is often used in the morning, but at the same time often uses tap water in kitchens and washrooms, and it is inevitable that tap water pressure fluctuates during washing.

For example, when the water pressure increases, the cleaning flow rate through the main water channel increases, and the vacuum breaker that is in communication with the atmosphere for an instant
There was a case where water splattered outside from 56. Therefore, the vacuum breaker 56 needs to be provided with a pipe hose or the like so that the overflow water of the vacuum breaker can be drained to the outside of the device body in each of the water channels so that water does not fall on the electric parts and the like even if the water scatters. The number of pipe hoses in addition to the number of pipe hoses increased, and the design constraints were great.

Further, when the tap water pressure increases and the flushing flow rate increases, the amount of water discarded into the toilet from the sub-channel increases, and the noise of draining water increases, which may surprise the user.

The present invention solves the above problems, and provides a sanitary washing device that has a simple configuration, does not cause water to splatter from a vacuum breaker in a main waterway even if tap water pressure fluctuates, and further suppresses sound of water drainage from a sub waterway. Things.

Means for Solving the Problems To solve the above problems, the sanitary washing device of the present invention comprises:
A main water passage extending from a water supply valve communicating with a water supply source to a plurality of washing nozzles at an end, and branching from a secondary side of the water supply valve on the main water passage,
A sub-water passage for draining water from the water discharge chamber in the vicinity of the washing nozzle to the outside of the apparatus body, a nozzle switch for switching supply of washing water to the washing nozzle, and a nozzle switching valve provided downstream from a branch portion of the main water passage; The vacuum breaker and the water outlet at the end of the sub-channel are provided integrally, and the secondary side of the vacuum breaker communicates with the water outlet inside the water discharge chamber by the overflow channel, and the air intake port is provided inside the water discharge chamber above the water discharge port. A discharge port having a larger sectional area than the water discharge port is provided below the water discharge port, and an air gap is formed by the air intake port and the water discharge port.

Operation According to the above configuration, it is necessary to equip both vacuum channels with the respective vacuum breakers because it is possible to prevent both the main channel and the sub channel with a single vacuum breaker because the suction of sewage which occurs when the water supply source is at a negative pressure and the check valve is not operated can be prevented. At the same time, the number of plumbing hoses will be reduced and refreshing. Also,
The excess water flow increase when the water pressure rises is also reduced in the water discharge chamber, and the abnormal sound is reduced.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is an external view of the sanitary washing device, in which an apparatus main body 2, a toilet seat 3, and the like are placed on a toilet bowl 1. 5 is a toilet 1
This is a low tank for washing water supplied by a water supply pipe 6. A branch faucet 7 is connected in the middle of the water supply pipe 6. Water is supplied to the apparatus main body 2 by connecting a discharge port of the branch faucet 7 and a water supply port 8 of the apparatus main body 2 with a connecting pipe 9. Have been. Reference numerals 10 and 11 denote washing nozzles, which are extended by the user to perform washing operation on the operation panel 12 of the apparatus main body 2 and eject hot water to perform local washing of the human body. Reference numeral 13 denotes an adjustment box containing setting knobs for setting a user's favorite washing flow rate, hot water temperature, and the like.

FIG. 1 is a diagram of a washing channel from the branch faucet 7 to the washing nozzles 10 and 11. The branch faucet 7 has a built-in check valve 14 for preventing backflow when the water supply is cut off, and is connected to the water supply port 8 by a connecting pipe 9. The water supply port 8 has an electromagnetic water supply valve
17 is connected and opened by a user's washing operation to supply water to the apparatus main body 2. On the secondary side of the water supply valve 17, a flow control valve 18 driven by a motor, a hot water tank 21 for supplying hot water, a pair of nozzle switching valves 22 and 23 juxtaposed via a vacuum breaker 24, and the cleaning nozzle 10 , 11 are sequentially connected to form a main waterway 40.

On the other hand, a sub-water channel 25 is branched from between the water supply valve 17 and the flow control valve 18. The sub water channel 25 has a water discharge chamber 29 for discharging water in the vicinity of the cleaning nozzles 10 and 11 via a constant flow valve 28, and a discharge port 30 for discharging water to the outside of the apparatus main body 2.

In addition, a relief valve 26 is provided from the secondary side of the flow rate control valve 18 to open when the pressure becomes equal to or higher than a predetermined pressure and to flow water to the sub-channel 25. The constant flow valves 27 and 28 prevent abnormal large flow water flow.

FIG. 3 shows a specific configuration of a portion A surrounded by a frame in FIG. A vacuum breaker 24 is provided on a base 67 of the apparatus main body 2 placed on the upper surface of the toilet 1, and the vacuum breaker 24 is configured not to directly communicate with the atmosphere as in the related art. That is, the vacuum breaker 24 is
, A water inlet 60 located downstream of the hot water tank 21, a communication port 31 communicating with the nozzle switching valves 22 and 23, and an overflow water channel 64 and a shutoff valve for communicating the main waterway 40 and the sub waterway 25 via a shutoff valve 61. A ribbed recess 32 for accommodating 61 is integrally formed.

The base 67 has a water discharge chamber 29 to which the water discharge port 71 communicates. The bottom surface of the water discharge chamber 29 is inclined, and the distal end thereof has a drain port 30 extending from the inner surface of the toilet 1 and having a larger opening area than the water discharge port 71.

A lid 68 having an air intake 69 at a position higher than the upper surface of the toilet bowl 1 and the water outlet 71 is water-tightly fitted and fixed on the water discharge chamber 29.

Next, the operation of the above configuration will be described with reference to FIGS. The flow of water during normal operation and the flow of air for preventing the suction of sewage in each water channel when the water supply source 74 has a negative pressure will be described with reference to FIGS.

During normal operation, the water flow from the main water channel 40 to the nozzle switching valve
At 22 and 23, the cleaning nozzles 10 and 11 are selected and ejected. In the sub water channel 25, the water is throttled by the constant flow rate valve 28 and constantly drained in the direction of the arrow E. Here, when the water pressure on the water supply source 74 side suddenly increases, the relief valve 26 is opened and the water is drained to the sub waterway 25.

However, when the water pressure rises sharply and the water flow suddenly increases, it is not possible to cope with the drainage to the sub-channel 25, so for a moment, the shut-off valve 61 of the vacuum breaker 24 performs the water stop operation. During this time, part of the water flowing through the main water passage 40 flows as overflow water through the shutoff valve 61 to the sub water passage 25 (arrows B → D → E). At this time, since the vacuum breaker 24 communicates only with the sub-water channel 25 via the shutoff valve 61 (not directly communicates with the atmosphere), the vacuum breaker 24
There is no more water splashing outside.

At this time, a considerably large amount of water flows through the water discharge port 71 (in the direction of the arrow E), and the flow velocity of the water flow increases.
By reducing the flow velocity of the water flow, the opening area is larger than that of the water discharge port 71, and a part of the tip is made to flow from the drain port 30 having an extended shape to the toilet 1, so that the noise of water drainage during washing can be suppressed. .

When the water supply source 74 has a negative pressure, the flow of air flows in the main channel 40 in the directions of arrows a → b → c and arrows d → b → c, and the closing valve 61 of the vacuum breaker 24 falls to the concave portion 32. Air flows through the gap defined by the ribs. In the sub-channel 25, air flows from the air inlet 69 in the direction of the arrow a → b, and
Flows from the arrow d → b to the air gap (water outlet space)
Is composed.

Furthermore, even if the drain port 30 is closed by sewage, the air flows from the arrow a to the arrow b, and the cleaning nozzle is closed.
There is no possibility of pumping sewage from 10,11.

As is clear from the above description of the embodiment, the sanitary washing device of the present invention switches the sewage suction phenomenon that occurs when the water supply source is at a negative pressure and the check valve is not operated to the nozzle of the main waterway. One vacuum breaker provided integrally with the nozzle, and the secondary side of the vacuum breaker communicates with the water discharge port of the sub-channel, and further communicates with a water discharge chamber having an air gap provided on a base near the nozzle. Both the backflow from the drain and the backflow from the drain can be prevented. In other words, it is not necessary to provide the vacuum breakers in both the waterways, and at the same time, the number of piping hoses is reduced and the system is refreshing. In addition, since the water outlet is connected to the water discharge chamber formed of a discharge port having a larger cross-sectional area than the water discharge port at the lower part of the intake port at the upper part, the pressure is reduced in the water discharge chamber even when the excess water flow increases when the water pressure rises, and the flow velocity decreases. Therefore, abnormal sounds are reduced.

[Brief description of the drawings]

FIG. 1 is a waterway diagram of a sanitary washing device showing one embodiment of the present invention, FIG. 2 is an external perspective view of the sanitary washing device, FIG. 3 is a sectional view of a vacuum breaker of the sanitary washing device, FIG. The figure is a waterway diagram of a conventional sanitary washing device. 10, 11… Cleaning nozzle, 17… Water supply valve, 24… Vacuum breaker, 25… Sub waterway, 29… Water discharge chamber, 30… Drainage outlet, 40… Main waterway, 64… Overflow waterway, 71 ……
Spout.

Continuing from the front page (72) Inventor Kazuaki Fujita 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. (56) References JP-A-63-107630 (JP, A) JP, U)

Claims (1)

(57) [Claims] 1. A main water passage extending from a water supply valve communicating with a water supply source to a plurality of washing nozzles at an end, and a water supply valve on the main water passage.
Nozzle switching that branches from the next side and drains from the water discharge chamber near the washing nozzle to the outside of the device main body, and a nozzle that is provided downstream of the branch of the main water passage and switches the supply of washing water to the washing nozzle. A valve, a vacuum breaker and a water outlet at the end of the sub waterway are provided integrally with the nozzle switching valve, and a secondary side of the vacuum breaker communicates with the water outlet inside the water discharge chamber through an overflow waterway, and the water outlet of the water discharge port is provided. The upper part is provided with an air inlet inside the water discharge chamber, the lower part of the water discharge chamber is provided with a discharge port having a larger cross-sectional area than the water discharge port inside the water discharge chamber, and the air inlet and the water discharge port constitute an air gap. Sanitary cleaning equipment.