JP2005105542A - Private part washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a private part washing device having a water supply mechanism capable of satisfying performance of a check valve even if various foreign matters coming from a water supply source intrude into the private part washing device. <P>SOLUTION: This private part washing device has a jetting device for jetting water for washing a private part of a human body, a heat exchanger for changing washing water into warm water, a water supply port connected with a water supply pipe, a water cut-off valve capable of switching into a form in which water supplied from the water supply port passes and a form in which water is cut off, an adjusting valve for adjusting pressure of water supplied from the water supply pipe, and the check valve for preventing water going toward the water supply port from the jetting device. The check valves are provided in two or more sections in a water channel and use different valve structures, respectively. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a local cleaning apparatus, and more particularly to a local cleaning apparatus having a stable water supply mechanism.

  2. Description of the Related Art Conventionally, a local cleaning apparatus has been proposed in which a water drain plug having a check valve built in a filter is provided in a water supply section of the apparatus main body.

  According to this proposal, the check valve can prevent backflow when water is supplied, and when the water is stopped, the check valve can be removed at the same time by removing the water drain plug, so that the water accumulated upstream of the water tap can be easily and reliably removed. It can be pulled out and can be prevented from being damaged by freezing. Moreover, even if cleaning water mixed with dust or foreign matter is supplied, it can be removed with a filter to prevent breakdown of the main body. It is supposed to be possible.

  Further, it has been proposed to use a duckbill system as a check valve system (for example, Patent Document 2). Moreover, the local washing | cleaning apparatus which provided the check valve in the secondary side of the water stop valve is also proposed (for example, patent document 3).

However, in such a case, there is one check valve of the local cleaning device, and there is a problem that the check valve may cause malfunction due to various foreign substances coming from the water supply source.
JP-A-1-90330 JP 2001-173070 A JP 2001-026964 A

  The present invention has been made to solve the above problems, and the object of the present invention is to satisfy the performance of the check valve even if various foreign substances from the water supply source enter the local cleaning device. An object of the present invention is to provide a local cleaning device having a simple water supply mechanism.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided an ejection device for ejecting washing water for washing a local part of a human body, a heat exchanger for warming the washing water, and a water supply port connected to a water pipe. A stop valve that can be switched between a form for passing water supplied from the water supply port and a form for stopping water, an adjustment valve that adjusts the water pressure supplied from the water pipe, and the ejection device In the local cleaning device having a check valve for blocking water toward the water supply port, the check valve is provided at two or more locations in the water channel, and each has a different valve structure. Therefore, even when a foreign matter is mixed, even if one check valve malfunctions, the other check valve does not malfunction and is effective.

  According to the invention of claim 2, in addition to the invention of claim 1, a check valve type check valve is provided on the primary side of the stop valve, and a duck bill type is provided on the secondary side of the stop valve. A check valve was provided. As a result, the check valve type check valve with strong pressure resistance is the primary side, although the pressure resistance is lower than the check valve type, but it is made of an elastic material, so it has sealing properties even at low differential pressure, and the check effect By providing a duckbill check valve on the secondary side that can be expected to cope with a wide range of differential pressures, it is possible to prevent damage to the check valve due to the water hammer phenomenon.

  According to the invention of claim 3, in addition to the invention of claim 2, the duckbill type check valve is removable, so that even if foreign matter is mixed, it can be removed. Maintainability is improved because foreign matters can be easily removed.

  According to the present invention, check valves are provided at two or more locations in the water channel, and each has a different valve structure, so that a plurality of different check valves are installed. In this case, it is effective to provide a local cleaning device in which even if one check valve malfunctions, the other check valve does not malfunction.

  Hereinafter, the sanitary washing apparatus 1 which is one form of this invention is demonstrated using figures.

  FIG. 1 is a perspective view of a local cleaning device 1 according to an embodiment of the present invention. The local cleaning device 1 instantaneously boils cleaning water to a desired temperature with a heater and ejects it toward a human body part. This is a so-called instantaneous cleaning device.

  In FIG. 1, the local cleaning device 1 will be described in order from the upstream side. A water supply fitting 2 connected to a water supply source, a water supply / water stop unit 3, a heat exchanger 4, a cleaning water ejection unit 5, an electronic device A control device 6 and various sensors and switches are provided. Each part of the local cleaning device is controlled by the electronic control unit 6 based on signals from switches and sensors. That is, the wash water supplied from the water supply source is decompressed by the water supply / water stop unit 3 and supplied to the heat exchanger 4, and is heated to a desired temperature by the heat exchanger 4, and then the wash water ejection unit. To 5 nozzles. The washing water jetting unit 5 jets washing water from the jet nozzle 5a at the tip of the nozzle toward the human body part, thereby washing the human body part.

  Next, regarding the configuration and operation of each part of the local cleaning device, first, FIG. 1, FIG. 2, which is a cross-sectional view of the water supply / water stop unit 3, the water supply / water stop unit 3, and the second check valve 7. This will be described with reference to FIG. 3 which is an assembly drawing of the relief valve 8. The water supply fitting 2 has a built-in strainer (not shown) for removing dust contained in the cleaning water from the water supply source. The water supply / water stop unit 3 includes a first check valve 3a and a water pressure The pressure reducing valve 3b and the water stop valve 3c are provided. The first check valve 3a is a check valve type check valve, which includes a valve 3d, a spring 3e, and a valve body 3f. The valve 3d is made of a seal member and may be an O-ring. Absent. When water pressure is applied, the valve 3d rises, but in the water stop state, the water channel is closed by the force of the spring 3e.

  A second check valve 7 and a relief valve 8 are provided outside the water supply / stop unit 3. As shown in FIG. 4 which is a cross-sectional view, the second check valve 7 is configured such that the wash water coming from the water supply / water stop unit 3 is passed through the duckbill 7a in the second check valve 7 to The part 7b is opened and water is passed to the relief valve 8. In the case of water stoppage, the valve portion 7b closes the water channel due to the elasticity of the material itself. The same applies when a reverse flow occurs, and the valve portion 7b closes the water channel. As the material of the duckbill 7a, silicone rubber or EPDM, which is an elastic member, is good in performance.

  The pressure reducing valve 3b is a valve that prevents the high water supply pressure from being applied to the heat exchanger 4 with the flow rate from the water supply source as a predetermined pressure (about 0.08 MPa). Moreover, the water stop valve 3c is a valve for injecting or stopping washing water from the washing water jetting part 5 toward the human body local part by opening and closing based on a washing operation command signal described later. Furthermore, the relief valve 8 is opened at a predetermined pressure (0.2 MPa) or higher, so that even if the pressure reducing valve 3b fails, a water pressure of a predetermined (0.2 MPa) or higher is applied to the heat exchanger. It is a valve for preventing and protecting the heat exchanger 4.

  The heat exchanger 4 includes a heater 4a as shown in FIG. 5, which is a cross-sectional view, and supplies cleaning water at a desired temperature by controlling the amount of current supplied to the heater 4a. Since it is a heat exchanger of the type, it is set to a heater capacity capable of continuously heating the wash water supplied from the water supply source to a desired temperature.

  A float switch 4 b is installed in the heat exchanger 4. The float switch 4b detects the level of warm water in the heat exchanger, and acts as a sensor that detects the presence or absence of air in the heat exchanger and prevents air blow. A vacuum breaker 4c is connected to the downstream side of the heat exchanger, and the backward flow of the washing water from the washing water ejection portion side is prevented by opening the pipe to the atmosphere.

  Although not shown, the washing water ejection part 5 includes a switching valve, a washing nozzle, and a nozzle driving part. In other words, the switching valve is a switching valve that receives a control signal from the electronic control unit 6 and opens the pipeline and adjusts the flow rate by driving the stepping motor, and selectively communicates the flow path connected to each port. And a mode for fully opening each port. The switching valve switches between a first flow path for buttocks cleaning and a second flow path for bidet cleaning.

  Next, drive parts, such as the water stop valve 3c controlled by the electronic control apparatus 6, are demonstrated. The electronic control device 6 is configured as a logical operation circuit having a CPU, a ROM, a RAM, and the like, and executes various controls in the local cleaning device. The electronic control unit 6 receives various setting button signals and sensor outputs. In other words, an operation unit (not shown) is provided that is operated by the user and converts the intended use into an electrical signal and outputs the signal to the electronic control device 6. The operation unit includes a remote controller (not shown), and includes various operation buttons for outputting various commands accompanying the local cleaning to the electronic control device 6 in accordance with the user's button operations.

  Although not shown, a main switch for turning on and off the local cleaning device 1 and a butt cleaning button, a bidet cleaning button for starting local cleaning, a bidet cleaning button, a stop button, and a jet of cleaning water that changes the strength of the water, etc. Massage setting button to set, Move setting button to set the local cleaning by swinging the cleaning nozzle, Spout temperature setting button to adjust the temperature of cleaning water, Water setting button to set cleaning strength, Set the amount of cleaning water A water volume setting button is provided.

  Further, as shown in FIG. 1, the sensor is provided in a seating sensor 10 for detecting that a user is seated on the toilet seat 9, a human body sensor 11 for detecting a person entering the toilet room, and the water supply / stop unit 3. An incoming water temperature sensor 3g for detecting the incoming water temperature, an outgoing water temperature sensor 4d for detecting the outgoing water temperature provided in the heat exchanger 4, and a float switch 4b are provided.

  The electronic control unit 6 receives the output signals from the incoming water temperature sensor 3g and the outgoing water temperature sensor 4d, and turns on / off the heater 4a so as to go to the water discharge temperature set value, so that the stored washing water is brought to an appropriate temperature. Execute feedback control to maintain. Further, in the electronic control unit 6, the heater 4a controls the water stop valve 3c in accordance with the input state of the water level signal from the float switch 4b to prevent air blow and maintain the water level.

  Further, when an abnormality such as a water interruption occurs, the energization to the heater 4a is stopped, the water stop valve 3c of the water supply / water stop section 3 is closed, and the cleaning nozzle 5 is accommodated.

  With the above configuration, a check valve is provided on the primary side of the water stop valve of the water supply / water stop section 3 as the first check valve 3a in the present invention. As a result, the water hammer phenomenon that occurs when the stop valve is closed will not cause damage if it is a check valve structure. As a second check valve, a duck bill type check valve 7 was provided outside the water supply / water stop portion 3. Thereby, since the check valve is provided on the secondary side, even if the water hammer phenomenon occurs, the valve portion of the duckbill does not deteriorate due to the water pressure, and the check check does not become defective.

  Further, as described above, the check valve used in the first check valve 3a is resistant to the water hammer phenomenon and excellent in durability. However, if a foreign object such as a wire is caught on the spring portion, the check valve becomes defective. Sometimes. The duck bill method used in the second check valve can block the water channel during reverse flow even if a foreign object such as a wire is caught in the valve, but it has poor durability and check performance. There is.

  Therefore, the first check valve and the second check valve are check valves having different structures, and the check valve is not damaged due to the water hammer phenomenon. Even if malfunction occurs, it is possible to prevent backflow on the other side.

  In addition, since the water supply / stop portion 3, the second check valve 7 and the relief valve 8 are connected to each other by a tube, they are easily replaced when there is an abnormality in the second check valve 7. It is possible.

The perspective view of the present invention Cross section of the water supply / water stop section of the present invention Partial assembly drawing of the present invention Sectional drawing of the 2nd non-return valve of this invention Sectional view of the heat exchanger of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Local washing | cleaning apparatus 2 ... Water supply metal fitting 3 ... Water supply / water stop part 3a ... First check valve 3b ... Pressure reducing valve (regulation valve)
DESCRIPTION OF SYMBOLS 4 ... Heat exchanger 5 ... Washing water ejection part 6 ... Electronic control unit 7 ... Second check valve 8 ... Relief valve 9 ... Toilet seat 10 ... Seating sensor 11 ... Human body sensor

Claims (3)

A jetting device for jetting washing water for washing a local part of the human body, a heat exchanger for warming the washing water, a water supply port connected to a water pipe, and a configuration for passing water supplied from the water supply port. A local cleaning device having a water stop valve that can be switched to a water supply mode, an adjustment valve that adjusts the water pressure supplied from the water pipe, and a check valve that blocks water from the jetting device toward the water supply port In
The local cleaning apparatus, wherein the check valves are provided at two or more locations of the water channel, and each has a different valve structure. The local cleaning device according to claim 1, further comprising a check valve type check valve on a primary side of the water stop valve, and a duck bill type check valve on a secondary side of the water stop valve. . The local cleaning apparatus according to claim 2, wherein the duckbill check valve is removable.

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