JP5919466B2 - Sanitary washing device - Google Patents

Description

  The present invention relates to a toilet nozzle for cleaning a toilet in a sanitary washing device.

  Conventionally, in this type of sanitary washing device, various sanitary washing devices have been developed in order to prevent filth from adhering to the toilet bowl (see, for example, Patent Document 1).

  In the sanitary washing device described in Patent Document 1, when a person sits on the toilet seat, the washing water is discharged from the toilet nozzle toward the inner surface of the toilet bowl. As a result, the inner surface of the toilet is wetted by the washing water and the water film is formed on the toilet surface, thereby preventing dirt from adhering to the toilet.

JP-A-7-189319

  In the sanitary washing device described in Patent Document 1, the supply pressure of tap water is reduced by a pressure reducing valve, and the cleaning water reduced by the pressure reducing valve is opened in the toilet nozzle by opening the main electromagnetic valve and the electromagnetic bypass valve. A jet was discharged from a certain pre-cleaning nozzle to the inner surface of the toilet.

However, in the conventional configuration, the supply pressure of water supply, which is a supply source of cleaning water, acts on the primary side of the main electromagnetic valve in a state where the main electromagnetic valve is closed. Generally, the supply pressure of the water supply supplied to the home is 1 to 7.5 kg / cm ² , and it is a moment until the pressure is reduced by the pressure reducing valve when the electromagnetic valve is opened, but the supply pressure is high for the toilet nozzle. Has a problem that the jet reaches the toilet seat or outside the toilet.

  In addition, the supply pressure of tap water varies depending on the region and time zone, and the pressure reducing valve cannot avoid the fluctuation of the secondary pressure due to the pressure fluctuation on the primary side. However, there was a problem that it could not be obtained stably.

  This invention solves the said conventional subject, and it aims at providing the sanitary washing apparatus which can stabilize the jet from a toilet nozzle and can prevent jumping out of a toilet bowl.

In order to solve the above-described conventional problems, a sanitary washing device of the present invention is a sanitary washing device that supplies cleaning water supplied from a supply source to a human body, and is for cleaning a human body by discharging the cleaning water. A human body washing water channel provided between the nozzle, the supply source and the human body washing nozzle for circulating the washing water from the supply source to the human body washing nozzle, and a toilet flushing water channel branched from the human body washing water channel A toilet nozzle provided at an end, a pulsation pump provided upstream from the toilet nozzle and the human body washing nozzle, and a part of the human body washing water flow channel upstream from the pulsation pump are opened to the atmosphere. comprising a open air section, and a control unit for controlling each section, wherein the control unit controls the operating speed of the pulsatile pump, if less cleaning flow the toilet nozzle and the human body washing from the pulsatile pump Pulsation width of the washing water pressure supplied to the nozzle by reducing, in the case of large washing flow is to increase the pulse width.

Thereby, when the wash water from the supply source is ejected from the toilet nozzle, a part of the human body wash water flow channel upstream of the pulsation pump is opened to the atmosphere, so that the water supply source of the wash water is The effect of the supply water pressure is eliminated, and the flow of washing water according to the operating speed of the pulsating pump controlled by the control unit is supplied to the toilet nozzle, and the jet discharged from the toilet nozzle into the toilet is stabilized. The jet from the toilet nozzle can be prevented from jumping out of the toilet bowl.
In this case, since the wash water on the primary side of the pulsation pump is open to the atmosphere, the wash water delivered by the pulsation pump is in response to the operation of the pulsation pump without being affected by the supply water pressure of the water supply that is the supply source. Since the pulsating jet can be ejected from the toilet nozzle, not only the toilet ball surface is wetted in advance by the jet from the toilet nozzle to prevent stool adhesion, but also the effect of removing dirt already attached to the toilet ball surface can be improved. it can.
In particular, the control unit controls the operation speed of the pulsation pump, and in the case of a small washing flow rate, the pulsation width of the washing water pressure supplied from the pulsation pump to the toilet nozzle and the human body washing nozzle is reduced to increase the washing flow rate. In this case, by increasing the pulsation width, the flow rate and the pulsation pressure amplitude (pulsation width) are reduced not only when the toilet is cleaned by the toilet nozzle but also when the human body is cleaned by the human cleaning nozzle. From a gentle jet with little irritation to a strong jet with a large flow rate and pulsation pressure amplitude (pulsation width) with a sense of irritation, it can be realized stably without being affected by the supply water pressure of the water supply source, A wider sense of cleaning can be provided to the user.

  The sanitary washing device of the present invention can stabilize the jet flow from the toilet nozzle, prevent the jet flow from the toilet nozzle from jumping out of the toilet bowl, and improve the effect of removing toilet dirt.

The perspective view of the toilet apparatus to which the sanitary washing apparatus in Embodiment 1 of this invention is applied. Front view of the remote operation device of the sanitary washing device in the first embodiment Schematic diagram of the sanitary washing device in the first embodiment Schematic diagram of the air release part of the sanitary washing device in the first embodiment Sectional drawing of the positive displacement pump of the sanitary washing apparatus in Embodiment 1 Time chart illustrating the operation of the sanitary washing device in the first embodiment Longitudinal sectional view of the sanitary washing device in the first embodiment The expanded sectional view for demonstrating the toilet nozzle of FIG. 7, and its surrounding structure Longitudinal sectional view of the sanitary washing device at the time of toilet pre-washing of FIG. The expanded sectional view for demonstrating the toilet nozzle of the state of FIG. 9, and its surrounding structure (A) is sectional drawing which shows the detailed structure of the front-end | tip part of the toilet nozzle of FIG. 7, (b) is sectional drawing of C14-C14 of (a). (A) is a schematic diagram illustrating the definition of the ejection flow velocity and spreading width of a toilet nozzle. (B) is a graph showing the relationship between the ejection flow velocity and spreading width. A graph showing the results of a survey of sitting time The flowchart which illustrates the control flow of toilet bowl washing processing by a control part Schematic diagram of the air release part of the sanitary washing device in Embodiment 2 of the present invention

1st invention is the sanitary washing apparatus which supplies the human body with the washing water supplied from a supply source, Comprising: Between the human body washing nozzle which discharges washing water and wash | cleans a human body, and a supply source and a human body washing nozzle A human body washing water flow channel for supplying washing water from the supply source to the human body washing nozzle, a toilet nozzle provided at an end of a toilet flushing water channel branched from the human body washing water channel, and the toilet a pulsation pump than the nozzle and the human body washing nozzle is provided on the upstream side, and the open air section exposed to the atmosphere a portion of the upstream side the human body washing water flow passage than the pulsatile pump, and a control unit for controlling the various sections The control unit controls the operating speed of the pulsation pump, and when the cleaning flow rate is low, the controller supplies the toilet nozzle and the human body washing nozzle from the pulsation pump.
If the wash water from the supply source is ejected from the toilet nozzle by reducing the pulsation width of the wash water pressure and increasing the pulsation width in the case of a large washing flow rate, the human body upstream of the pulsation pump Since a part of the washing water channel is open to the atmosphere, the influence of the supply water pressure of the water supply, which is the washing water supply source, is eliminated, and the washing water having a flow rate corresponding to the operating speed of the pulsation pump controlled by the control unit is obtained. Acting so as to be supplied to the toilet nozzle, the jet flow discharged from the toilet nozzle into the toilet bowl can be stabilized, and the jet flow from the toilet nozzle can be prevented from jumping out of the toilet bowl.

In this case, since the wash water on the primary side of the pulsation pump is open to the atmosphere, the wash water delivered by the pulsation pump is in response to the operation of the pulsation pump without being affected by the supply water pressure of the water supply that is the supply source. Since the pulsating jet can be ejected from the toilet nozzle, not only the toilet ball surface is wetted in advance by the jet from the toilet nozzle to prevent stool adhesion, but also the effect of removing dirt already attached to the toilet ball surface can be improved. it can.
In particular, the control unit controls the operation speed of the pulsation pump, and in the case of a small washing flow rate, the pulsation width of the washing water pressure supplied from the pulsation pump to the toilet nozzle and the human body washing nozzle is reduced to increase the washing flow rate. In this case, by increasing the pulsation width, the flow rate and the pulsation pressure amplitude (pulsation width) are reduced not only when the toilet is cleaned by the toilet nozzle but also when the human body is cleaned by the human cleaning nozzle. From a gentle jet with little irritation to a strong jet with a large flow rate and pulsation pressure amplitude (pulsation width) with a sense of irritation, it can be realized stably without being affected by the supply water pressure of the water supply source, A wider sense of cleaning can be provided to the user.

  The second invention has a heat exchanger for heating the wash water on the upstream side of the pulsation pump of the first invention in particular, so that the wash water heated by the heat exchanger can be pulsated and ejected from the toilet nozzle. Therefore, it is possible to further improve the cleaning effect against stool adhesion and dirt.

  According to a third aspect of the present invention, in particular, an electromagnetic valve is provided on the upstream side of the atmosphere opening portion of the first or second invention, and the atmosphere opening portion has a water inlet and a water outlet and stores a wash water. And a water level sensor that outputs a signal according to the water level of the tank, and an air opening hole that forms an air layer by opening the inside upper part of the tank to the atmosphere, and the water inlet is configured to open to the air layer, There is an air layer that is open to the atmosphere between the water surface of the atmosphere opening portion and the water inlet that communicates with the water supply that is a supply source of the washing water, so that the washing water downstream from the atmosphere opening portion is washed water. It is possible to prevent the backflow to the water supply that is the supply source.

  According to a fourth aspect of the invention, in particular, the control unit of the third aspect of the invention opens the electromagnetic valve when the water level of the tank reaches a predetermined lower limit water level, and closes the electromagnetic valve when the water level of the tank reaches a predetermined upper limit water level. By having a water level control unit that keeps the water level and air layer within a predetermined range, the water level control unit controls the opening and closing of the solenoid valve by the signal from the water level sensor, and the water level of the heat exchanger is set to the upper and lower water levels. Since it can be maintained between the water level and the air layer can be secured without increasing the size of the tank, a small and compact sanitary washing device can be provided.

  Hereinafter, the present embodiment will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
<1> Appearance of sanitary washing apparatus and toilet apparatus provided with the same FIG. 1 is an overall view of a toilet apparatus showing a state where the sanitary washing apparatus according to an embodiment of the present invention is mounted on a toilet. The toilet apparatus 1000 is installed in a toilet room.

  As shown in FIG. 1, the sanitary washing device 100 is mounted on the toilet bowl 700. The sanitary washing device 100 includes a main body 200, a remote operation device 300, a toilet seat 400 and a lid 500. A toilet seat 400 and a lid 500 are attached to the main body 200 so as to be freely opened and closed. In addition, the main body 200 is provided with a cleaning water supply mechanism shown in FIG.

  In FIG. 1, a seating sensor 610 provided in the upper front portion of the main body 200 is shown. The seating sensor 610 is, for example, a reflective infrared sensor. In this case, the seating sensor 610 detects the presence of a user on the toilet seat 400 by detecting infrared rays reflected from the human body.

  Further, FIG. 1 shows a state in which the toilet nozzle 40 provided at the lower front portion of the main body 200 protrudes inside the toilet 700. The toilet nozzle 40 is connected to the above-described washing water supply mechanism.

  The washing water supply mechanism is connected to the water pipe. Accordingly, the cleaning water supply mechanism supplies the cleaning water supplied from the water pipe to the toilet nozzle 40. Thereby, washing water is ejected from the toilet nozzle 40 to a wide area on the inner surface of the toilet 700 (toilet bowl pre-washing). Alternatively, washing water is ejected from the toilet nozzle 40 to the back side of the inner surface of the toilet 700 (toilet rear cleaning).

  The cleaning water supply mechanism is connected to a nozzle unit 20 (FIG. 3) that is a human body cleaning nozzle described later. Accordingly, the cleaning water supply mechanism supplies the cleaning water supplied from the water pipe to the nozzle unit 20. Thereby, washing water is ejected from the nozzle part 20 to a user's local part.

  The remote operation device 300 is provided with a plurality of switches. The remote control device 300 is attached to a place where a user sitting on the toilet seat 400 can operate, for example.

  The entrance detection sensor 600 is attached to an entrance of a toilet room or the like. The entrance detection sensor 600 is, for example, a reflective infrared sensor. In this case, the entrance detection sensor 600 detects that the user has entered the toilet room when detecting infrared rays reflected from the human body.

  The control unit 4 (FIG. 3) of the main body 200 controls the operation of each part of the sanitary washing device 100 based on signals transmitted from the remote operation device 300, the room entry detection sensor 600 and the seating sensor 610.

<2> Configuration of Remote Operation Device FIG. 2 is a front view of the remote operation device 300 of FIG. The remote control device 300 is provided with a wide cleaning switch 305, a rhythm cleaning switch 306, a water force setting switch 307, 308, a move cleaning switch 309, and a cleaning position setting switch 310, 311 on the upper portion of the controller main body 301. Under the unit 301, a stop switch 302, a butt switch 303, and a bidet switch 304 for instructing to stop the cleaning operation are provided.

  The above switches are operated by the user. Thereby, a predetermined signal corresponding to each switch is wirelessly transmitted from the remote operation device 300 to the main body 200 of FIG. The control unit 4 (FIG. 3) of the main body 200 controls the operation of each component of the main body 200 (FIG. 1) and the toilet seat 400 (FIG. 1) based on the received signal. For example, when the user presses down the buttocks washing button 303 or the bidet washing button 304, the nozzle part 20 of the main body part 200 moves and the washing water is ejected.

<3> Configuration and Operation of Water Supply System and Control System in Main Body FIG. 3 is a schematic diagram showing the configuration of the main body 200 of the sanitary washing device 100 according to the embodiment of the present invention.

  As shown in FIG. 3, the main body 200 includes a control unit 4, a branch tap 5, a strainer 6, a solenoid valve 7, an air release unit 8, a constant flow valve 9, a heat exchanger 12, temperature sensors 13 a and 13 b, a volume. A mold pump 14, a buffer tank 15, a switching valve 16, a nozzle unit 20, a vacuum breaker 61, a toilet nozzle 40 and a toilet nozzle motor 40m are included. The nozzle unit 20 includes a buttocks nozzle 1, a bidet nozzle 2, and a nozzle cleaning nozzle 3, and the switching valve 16 includes a switching valve motor 16m.

  Similarly, as shown in FIG. 3, the branch tap 5 is inserted in the water supply pipe 201 which is a water supply source. The human body washing water flow path 202 from the branch faucet 5 to the buttocks nozzle 1 and the bidet nozzle 2 which are human body washing nozzles has a strainer 6, an electromagnetic valve 7, a constant flow valve 9, a temperature sensor 13 a, a heat exchanger 12, A temperature sensor 13b, a positive displacement pump 14, a buffer tank 15, and a switching valve 16 are sequentially inserted.

Further, the toilet flushing water channel 2 branched from the human body washing water channel 202 by the switching valve 16.
A toilet nozzle 40 is connected to the end of 05. The toilet nozzle motor 40 m is attached in the vicinity of the toilet nozzle 40.

  The vacuum breaker 61 is provided in the buffer tank 15.

  Next, the flow of cleaning water in the main body 200 and the control of each component of the main body 200 by the control unit 4 will be described.

  First, purified water flowing through the water pipe 201 is supplied to the strainer 6 by the branch tap 5 as cleaning water. The strainer 6 removes dust and impurities contained in the cleaning water.

  Next, the supply state of the washing water is switched by the electromagnetic valve 7 and the washing flowing through the human body washing water flow path 202 by passing through the constant flow valve 9 which is a variable orifice made of rubber whose orifice diameter is changed by the working water pressure. The water pressure is reduced. The operation of the electromagnetic valve 7 is controlled by the control unit 4.

  In the human body washing water flow path 202, the heat exchanger 12 heats the washing water supplied through the human body washing water flow path 202 to a predetermined temperature. As for the operation of the heat exchanger 12, a positive displacement pump 14 which is a pulsating pump is controlled and driven by the control unit 4, and a washing water having a flow rate corresponding to the operating speed of the positive displacement pump 14 is a posterior nozzle 1 which is a human body washing nozzle. Or since it discharges from the bidet nozzle 2, it is controlled by the control part 4 based on the measured temperature value measured by the temperature sensors 13a and 13b and the control flow rate by the positive displacement pump.

  Subsequently, the wash water heated by the heat exchanger 12 is pumped to the switching valve 16 through the buffer tank 15 by the positive displacement pump 14. The operation of the switching valve 16 is performed by the control unit 4 as a human body washing nozzle 1 or bidet nozzle 2 or nozzle washing nozzle 3 or a toilet nozzle that is discharged onto the bowl surface of the toilet bowl for pre-washing and post-washing of the toilet bowl. 40 is controlled to be switched.

  The buffer tank 15 functions as a temperature buffer for heated washing water. Thereby, generation | occurrence | production of the temperature nonuniformity of the wash water pumped by the switching valve 16 is suppressed. The total capacity of the heat exchanger 12 and the buffer tank 15 is preferably 15 cc to 30 cc, and more preferably 20 cc to 25 cc.

  In the switching valve 16, the switching valve motor 16m operates to supply the cleaning water pumped from the positive displacement pump 14 to any one of the posterior nozzle 1, the bidet nozzle 2, and the nozzle cleaning nozzle 3. Accordingly, the cleaning water is ejected from any one of the butt nozzle 1, the bidet nozzle 2, and the nozzle cleaning nozzle 3. The operation of the switching valve motor 16m is controlled by the control unit 4.

  The butt nozzle 1 and the bidet nozzle 2 are used for cleaning a user's local area. The nozzle cleaning nozzle 3 is used for cleaning portions of the buttocks nozzle 1 and the bidet nozzle 2 that protrude into the toilet bowl 700.

  A vacuum breaker 61 is provided in the buffer tank 15 between the positive displacement pump 14 and the switching valve 16. Thereby, even when both the positive displacement pump 14 and the switching valve 16 are stopped so as to block the flow path (human body washing water flow path 202), the flow path (human body) between the positive displacement pump 14 and the switching valve 16 The washing water flow path 202) can be prevented from becoming negative pressure, and sewage can be prevented from flowing backward from the toilet nozzle 40 side and the nozzle part 20 side.

  FIG. 4 shows an embodiment of the atmosphere opening unit 8 of FIG.

  The atmosphere opening unit 8 is provided with a water inlet 8b from the electromagnetic valve 7 and an atmosphere opening hole 8c in the upper part of the tank 8a, and a water outlet 8d to the heat exchanger 12 in the lower part of the tank 8a. ing. Furthermore, a water level sensor 11 for controlling the water level in the tank 8a is provided.

  The water level sensor 11 includes three electrodes 11a, 11b, and 11c having different lengths, the longest electrode 11a and the intermediate electrode 11b are immersed in water, and only the shortest electrode 11c is not immersed in water. Is a configuration in which the tip positions of the electrodes 11a, 11b, and 11c are set so that the water level of the three electrodes 11a, 11b, and 11c can be detected as the upper limit water level.

  Next, the positive displacement pump 14 that is a pulsation pump will be described. FIG. 5 is a cross-sectional view of the positive displacement pump 14.

  The positive displacement pump 14 has a cylindrical space 82 formed in the pump main body 81, a pressure feed piston 83 is provided in the cylindrical space 82, and the cylindrical space 82 is formed into a pump chamber 82 a and a pump chamber by the pressure feed piston 83. 82b. A flush water inflow portion 84 is provided on one side of the pump body 81, and a flush water outflow portion 85 is provided on the other side. The heat exchanger 12 is connected to the inflow part 84 via the human body washing water flow path 202, and the switching valve 16 is connected to the outflow part 85 via the human body washing water flow path 202.

  A gear 87 is attached to the rotating shaft of the motor 86, and the gear 88 meshes with the gear 87. The link mechanism 89 connected to the gear 88 converts the pumping piston 83 into a reciprocating motion. When the motor 86 rotates, the pressure-feed piston 83 reciprocates via the gear 87, the gear 88, and the link mechanism 89.

  Therefore, when the pumping piston 83 moves downward and the volume of the pump chamber 82a is increased, the pressure in the pump chamber 82a is lower than that in the inflow portion 84, so that the washing water is supplied from the inflow portion 84a to the pump chamber 82a. To be supplied. On the other hand, when the pumping piston 83 moves upward and the volume of the pump chamber 82a is reduced, the pressure in the pump chamber 82a becomes higher than that in the outflow portion 85, so that the washing water flows from the pump chamber 82a to the outflow portion 85a. Discharged.

  Thereby, when the cleaning water in the pump chamber 82a is discharged from the outflow portion 85a, the cleaning water from the inflow portion 84b is supplied into the pump chamber 82b, and the cleaning water in the pump chamber 82a is supplied from the inflow portion 84a. At this time, the cleaning water in the pump chamber 82b is discharged from the outflow portion 85b.

  Therefore, when the pumping piston 83 moves up and down, pressure is alternately applied to the cleaning water in the pump chamber 82a or the pump chamber 82b, and the speed at which the pumping piston 83 reciprocates changes in one rotation. As a result, the washing water in the inflow portion 84 is periodically pulsated, and as a change in the pulsation pressure, the minimum pressure during pulsation is substantially equal to the inflow pressure of the pump, and the maximum pulsation pressure is the load of the pump. The pressure corresponds to the rate of change in the volume of the pump and is discharged from the outflow portion 85.

In FIG. 3, the upstream side of the positive displacement pump 14 that is a pulsation pump is opened to the atmosphere by the atmospheric release portion 8 of the human body washing water flow path 202, and the inflow pressure of the positive displacement pump 14 is supplied to the water supply that is the supply source. It becomes atmospheric pressure (0 MPa) without being affected by water pressure. Therefore, in a state where the switching valve 16 is switched to the toilet nozzle 40, the toilet nozzle 40 is supplied with a flow rate and pulsating washing water according to the rotational operating speed of the motor 86 of the pulsation pump 14 controlled by the control unit 4. Is done. Therefore, the jet flow discharged from the toilet nozzle 40 into the toilet bowl can be stabilized without being affected by the supply water pressure of the water supply as a supply source, and the jet flow from the toilet nozzle 40 can be prevented from jumping out of the toilet bowl. . In addition, by setting the installation position in the height direction of the positive displacement pump 14 to be a position lower than the water level of the atmosphere opening portion 8, the lifting capacity of the positive displacement pump 14 can be reduced and the energy loss can be reduced.

  Further, the pulsation pump 14 provided on the upstream side of the toilet nozzle 40, the atmosphere opening unit 8 for opening a part of the human body washing water flow path 202 on the upstream side of the pulsation pump 14, and control for controlling each part With the configuration provided with the unit 4, the flow rate ejected from the toilet nozzle 40 and the maximum pressure of pulsation are not affected by the supply water pressure of the water supply that is the supply source, and according to the operating speed of the pulsation pump 14 by the control unit 4 As a result, the toilet ball surface is preliminarily wetted by the jet from the toilet nozzle 40 to prevent the stool from adhering, and the effect of removing dirt already attached to the toilet ball surface can be improved.

  The reason why the above operation and effect are obtained is that when the supply pressure of water supply is acting on the inflow portion 84 in the positive displacement pump 14, the minimum pressure of the pump pulsation becomes the water supply pressure, and the maximum pressure of pulsation is If the load is constant, there is almost no change, so the pulsation width is small. However, as shown in FIG. 3, the upstream side of the positive displacement pump 14 is opened to the atmosphere by the atmospheric release portion 8 of the human body washing water flow path 202, so that the pressure of the inflow portion 84 of the positive displacement pump 14 is almost atmospheric pressure. Therefore, the minimum pressure of pulsation is atmospheric pressure, and the maximum pressure can be varied according to the number of rotations of the motor 86 of the positive displacement pump 14, and the pulsation width can be increased. Therefore, the jet flow discharged from the toilet nozzle 40 into the toilet bowl can be stabilized without being affected by the supply water pressure of the water supply as a supply source, and the jet stream from the toilet nozzle 40 can be prevented from jumping out of the toilet bowl. And the effect which removes the dirt already attached to the toilet bowl surface can be improved.

  The operation and effect of the configuration described with reference to FIG. 3 is not limited to the case of toilet cleaning by the toilet nozzle 40, but also when the human body is cleaned by the buttocks nozzle 1 or the bidet nozzle 2 which are human body cleaning nozzles as follows. An effect can be obtained. Since the upstream side of the positive displacement pump 14 as shown in FIG. 3 is open to the atmosphere by the open air portion 8 of the human body washing water flow path 202, the pressure of the inflow portion 84 of the positive displacement pump 14 becomes almost atmospheric pressure. The minimum pulsation pressure is atmospheric pressure and the maximum pressure can be varied according to the rotation speed of the motor 86 of the positive displacement pump 14 without being affected by the supply water pressure of the water supply as a supply source. Therefore, in the case of cleaning with a small set flow rate at which the motor 86 of the positive displacement pump 14 rotates at a low speed, the pulsation width is small and a gentler feeling of cleaning is realized. Conversely, the motor 86 of the positive displacement pump 14 rotates at a high speed. In the case of cleaning with a large set flow rate, a firm cleaning with a sense of stimulation can be realized stably without being affected by the supply water pressure of the water supply source, providing a wider cleaning feeling to the user Can do.

  As described above, the atmosphere opening portion 8 that opens a part of the human body washing water flow path 202 upstream of the pulsation pump to the atmosphere is provided, and the pulsation pump delivers a volume of washing water according to the driving amount of the pressure feed piston 83. By using the positive displacement pump 14, the flow rate can be controlled without providing a flow rate control valve by variably controlling the rotational speed of the motor 86. For example, when the number of rotations of the motor 86 is set to a low speed, the flow rate of the cleaning water supplied to the nozzle unit 20 is reduced, and the pressure amplitude of the pulsation is reduced, so that the washing can be performed with a gentle jet with less irritation. Further, when the rotational speed of the motor 86 is set to a high speed, the flow rate of the cleaning water supplied to the nozzle unit 20 is increased, and the pressure amplitude of the pulsation is increased so that the cleaning can be performed with a strong jet with a feeling of irritation.

That is, by providing the air release portion 8 that opens a part of the human body washing water flow path 202 upstream of the pulsation pump to the atmosphere, and the pulsation pump is a positive displacement pump, the human body washing nozzle is discharged without a flow control valve. The flow rate can be stably controlled, and the larger the set flow rate, the greater the amplitude of the pulsation of the cleaning water discharged from the human body cleaning nozzle.
In this case, the upstream side of the positive displacement pump 14 is open to the atmosphere by the open air portion 8 of the human body washing water flow path 202, and the inflow pressure of the positive displacement pump 14 is affected by the supply water pressure of the water supply as a supply source. It becomes atmospheric pressure without. Therefore, by variably controlling the rotational speed of the motor 86 of the positive displacement pump 14, the flow rate can be stably controlled without providing a flow rate control valve.

  In addition, the effect by the structure by which the upstream side from the positive displacement pump 14 demonstrated in FIG. 3 was open | released by the air | atmosphere by the air release part 8 of the human body washing water flow path 202 receives the influence of the water supply water pressure as mentioned above. However, the flow rate and pulsating washing water corresponding to the rotational operating speed of the motor 86 of the pulsation pump 14 controlled by the control unit 4 are supplied, and the toilet bowl by stable pulsation discharge from the toilet nozzle 40 and the human body washing nozzles 1 and 2. In addition, the control unit 4 rotates the switching valve motor 16m of the switching valve 16 and the cleaning water is discharged from the nozzle cleaning nozzle 3, so that the toilet nozzle 40 or In the same manner as when the cleaning water is discharged from the human body cleaning nozzles 1 and 2, the controller 4 is controlled without being affected by the supply water pressure of the water supply. Wash water flow and the pulsation corresponding to the rotational operating speed of the motor 86 of the dynamic pump 14 is supplied, it is possible to improve the effect of decreasing the contamination of the outer surface of the human body washing nozzle 1.

  FIG. 6 is a time chart illustrating the operation of the sanitary washing device according to the present embodiment described with reference to FIGS.

  First, when the control unit 4 detects that a user has entered the toilet room using the entrance detection sensor 600, the pulsation pump 14 that is a water pump is activated and the heater 12h of the heat exchanger 12 is energized. At this time, the switching valve 16 which is a flow path switching function opens the flow path to the toilet nozzle 40, and the other urine nozzle 1, the bidet nozzle 2 and the nozzle cleaning nozzle 3 are closed.

  Accordingly, the washing water is heated by the heat exchanger 12 and is ejected from the toilet nozzle 40 to a wide area of the inner surface of the toilet 700 by the pulsation pump 14 with a strong and weak intermittent pulsation pressure for a predetermined time, and then the heat exchanger 12. And the energization to the pulsation pump 14 is stopped. This time is indicated as toilet flushing / preheating in the time chart of FIG.

  At the time when the toilet flushing / preheating is started, the water level of the tank 8a provided with the air opening hole 8c is at a high (upper) position, but since it is ejected from the toilet nozzle 40 by the pulsation pump 14, The water level drops to a low (down) position. While the water level control unit (not shown) of the control unit 4 detects this with the water level sensor 11 comprising the electrodes 11a, 11b, and 11c, the electromagnetic valve 7 is controlled to open and close (ON / OFF), thereby the water level of the tank 8a. Is maintained within a predetermined range. In addition, since the tank 8a is provided with the atmosphere opening hole 8c, the pressure of the inflow portion 84 of the downstream pulsation pump 14 is almost atmospheric pressure, that is, 0 MPa, so that the influence of the supply water pressure of the water supply serving as the supply source is affected. Without being received, the minimum pressure of the pulsation is atmospheric pressure, and the maximum pressure can be varied according to the rotation speed of the motor 86 of the positive displacement pump 14.

  Therefore, the jet flow discharged from the toilet nozzle 40 into the toilet bowl can be stabilized without being affected by the supply water pressure of the water supply as a supply source, and the jet stream from the toilet nozzle 40 can be prevented from jumping out of the toilet bowl. And the effect which removes the dirt already attached to the toilet bowl surface can be improved. That is, not only can the toilet bowl surface be wetted in advance to prevent the stool from adhering, but also the effect of removing dirt already attached to the toilet bowl surface can be improved.

  Moreover, since the toilet flushing water flow path 205 leading to the toilet nozzle 40 is arranged on the downstream side of the heat exchanger 12 and the downstream side of the pulsation pump 14, the water warmed by the heat exchanger 12 is used for the toilet pre-washing. In addition to improving the effect on stool adhesion and dirt cleaning, it is possible to preheat (preheat) the washing water used for human body washing while pre-washing the toilet.

Next, when the user sits on the toilet seat 400 and the human body washing switch is turned on by operating the butt switch 303 or the bidet switch 304 of the remote control device 300, first, the switching valve 16 is connected to the nozzle washing nozzle 3. While the flow path is open, the pulsation pump 14 is operated, the heater 12h of the heat exchanger 12 is energized, and the urinal nozzle 1 and the bidet nozzle 2 are flushed with warm washing water pulsating from the nozzle washing nozzle 3. The portion protruding into 700 is cleaned (nozzle cleaning).
At this time, as described above, since the upstream side of the positive displacement pump 14 is opened to the atmosphere by the atmosphere opening portion 8 of the human body washing water flow path 202, the controller 4 does not receive the influence of the water supply water pressure. The effect of removing dirt on the outer surfaces of the human body washing nozzles 1 and 2 can be improved by the flow rate according to the rotational operation speed of the motor 86 of the pulsation pump 14 to be controlled and the pulsation washing water.

Next, the posterior nozzle 1 (or bidet nozzle 2) instructed by the remote control device 300 protrudes into the toilet bowl 700 (nozzle protrusion), and the switching valve 16 passes through the flow path leading to the posterior nozzle 1 (or bidet nozzle 2) instructed. As it opens, warmed wash water pulsating from the buttocks nozzle 1 is discharged to the buttocks to wash the buttocks.
At this time, as described above, since the upstream side of the positive displacement pump 14 is opened to the atmosphere by the atmosphere opening portion 8 of the human body washing water flow path 202, the controller 4 does not receive the influence of the water supply water pressure. The human body part can be washed with a flow rate according to the rotational operating speed of the motor 86 of the pulsation pump 14 to be controlled and pulsation washing water, the pulsation pressure amplitude is reduced, and the pulsation pressure amplitude is increased from a gentle jet with little irritation. It is possible to stably obtain a user-preferred cleaning feeling up to a strong jet with a feeling of irritation. Incidentally, the instruction to select the cleaning strength is given by the water force setting switches 307 and 308 in FIG.

  Even during the above-described human washing, the water level of the tank 8a is maintained within a predetermined range by controlling the solenoid valve 7 to open and close (ON / OFF) while the control unit 4 detects the water level of the tank 8a with the water level sensor 11. Is done.

Next, when the user presses the stop switch 302 of the remote control device 300 to finish the human body cleaning, the energization of the heater 12h of the heat exchanger 12 and the motor 86 of the pulsating pump 14 is stopped. Then, the buttocks nozzle 1 (or the bidet nozzle 2) that protrudes into the toilet bowl 700 is housed in the main body 200.
After the nozzle is stored, the switching valve 16 is switched to a state in which the flow path to the nozzle cleaning nozzle 3 is opened, the pulsation pump 14 is activated, the heater 12h of the heat exchanger 12 is energized, and the nozzle cleaning nozzle 3 The post-washing (nozzle washing) of the butt nozzle 1 and the bidet nozzle 2 protruding into the toilet bowl 700 is performed for a predetermined time with the heated washing water that pulsates, and then the heater 12h of the heat exchanger 12 and the pulsation pump 14 The energization to the motor 86 is stopped.

  Incidentally, at the right end of the time chart in the present embodiment illustrated in FIG. 6, when the control unit 4 recognizes that the user has been withdrawn from the toilet seat 400 by a signal from the seating sensor 610, the heat exchange is performed again. The heater 12h of the container 12 is energized, and the post-cleaning (nozzle cleaning) of the portions of the buttocks nozzle 1 and the bidet nozzle 2 protruding into the toilet bowl 700 is performed for a predetermined time with warmed cleaning water pulsating from the nozzle cleaning nozzle 3. The state is shown. At this time, water is supplied to the position of the water level sensor 11c of the tank 8a.

<4> Configuration and Operation of Toilet Nozzle (4-a) Description of Toilet Nozzle Next, toilet cleaning in the toilet nozzle 40 will be described. FIG. 7 is a longitudinal sectional view of the sanitary washing device 100. As shown in FIG. 7, the toilet nozzle 40 is disposed at a position near the nozzle portion 20 at the lower portion of the main body portion 200, and a tip portion thereof is located inside the toilet bowl 700. In the vicinity of the toilet nozzle 40, a lamp 50 made of an LED (light emitting diode) or the like is provided.

  In the following, as shown in FIG. 7, each part will be described with the main body 200 side of the sanitary washing device 100 as the rear and the front end side of the toilet seat 400 as the front.

  A toilet nozzle cover 40K is provided so as to cover the front side of the toilet nozzle 40 and the lamp 50 provided in the vicinity thereof. The toilet nozzle cover 40K is formed of a transparent resin. Thereby, when the lamp 50 emits light, the light is irradiated into the toilet 700 through the toilet nozzle cover 40K.

  FIG. 8 is an enlarged cross-sectional view for explaining the toilet nozzle 40 of FIG. 7 and the surrounding structure. As shown in FIG. 8, the toilet nozzle 40 has a structure in which a rod-like jet forming member 42 is inserted into the distal end portion of a cylindrical toilet nozzle main body 41. Inside the toilet nozzle main body 41, a gap is formed between the inner surface of the toilet nozzle main body 41 and the outer peripheral surface of the jet forming member 42. A connecting pipe 44 that constitutes a part of the toilet flushing water channel 205 of FIG. 3 is connected to the rear end of the toilet nozzle body 41.

  As a result, when cleaning water is supplied from the connecting pipe 44 to the toilet nozzle main body 41, the cleaning water passes through the gap between the inner surface of the toilet nozzle main body 41 and the outer peripheral surface of the jet forming member 42. It is ejected from the tip of the nozzle 40.

  One end of the rotating piece 43 is fixed to the rear end portion of the toilet nozzle main body 41. The other end of the rotating piece 43 is connected to a toilet nozzle motor 40m fixed to a main body lower casing 200A described later. Thereby, if the toilet nozzle motor 40m operates, the front-end | tip part of the toilet nozzle main-body part 41 will rotate.

  Here, when the toilet nozzle 40 is on standby, that is, when the user has not entered the toilet room, the tip of the toilet nozzle 40 is positioned so as to be close to the inner surface of the toilet nozzle cover 40K. Hereinafter, the position of the toilet nozzle 40 is referred to as a storage position. The position where the toilet nozzle 40 moves downward to perform toilet cleaning is hereinafter referred to as a protruding position.

  In FIG. 8, one end of the rotating piece 43 is fixed to the rear end portion of the toilet nozzle main body 41. The other end of the rotating piece 43 is connected to a toilet nozzle motor 40m fixed to a main body lower casing 200A described later. Thereby, if the toilet nozzle motor 40m operates, the front-end | tip part of the toilet nozzle main-body part 41 will rotate. Further, a torsion spring 40S is inserted into the rotating piece 43, the torsion spring 40S is fixed by a fixing portion 43a provided in the rotating piece 43 and a fixing groove 40Kb provided in the toilet nozzle cover 40K, and the toilet nozzle body 41 is accommodated in the nozzle. It is biased to the position side. There is a backlash of the drive system between the toilet nozzle motor 40m and the rotating piece 43, and when the toilet nozzle motor 40m uses a reduction gear, there is a backlash of the reduction gear. Even if the nozzle main body 41 is moved to the storage position, the toilet nozzle main body 41 does not stop at the storage position and returns by the amount of play. If the toilet nozzle body 41 is biased toward the nozzle storage by the torsion spring, the backlash is absorbed by the torsion spring, so that the nozzle body 41 can be fixed at a predetermined storage position by manual operation. .

  The torque of the torsion spring 40S is set to be equal to or greater than the tension generated by the pipe 44 connected to the toilet nozzle main body 41, so that the toilet nozzle main body 41 can be easily set on the nozzle storage side.

  If control of the hot water flush toilet seat becomes impossible and the toilet nozzle stops at an intermediate position and a jet spouts out, the jet flow may jump out of the toilet and leak into the floor. However, it is necessary to configure so as not to protrude at least from the toilet surface.

  In FIG. 8, the toilet nozzle cover 40 </ b> K is configured so that the jet flow ejected by the rotation of the tip of the toilet nozzle body 41 from the spraying position to the storage position does not jump out of the toilet surface. The shielding part 40ka of the nozzle cover 40K is comprised. Thus, no matter where the toilet nozzle main body 41 stops, the jet does not jump out of the toilet and water leakage can be prevented.

  Further, when the nozzle cover 40K covers the toilet nozzle 40 and an external force acts on the toilet nozzle 40, the toilet nozzle 40 moves to the inside of the shielding portion of the nozzle cover 40K, so that the toilet nozzle is overloaded with respect to the external force. There is no effect.

  In this state, when the entrance detection sensor 600 in FIG. 1 detects that the user has entered the toilet room, the toilet nozzle motor 40m operates. Thereby, the front-end | tip part of the toilet nozzle 40 rotates in the direction shown by the arrow A of FIG. And the above-mentioned toilet pre-washing is started.

  FIG. 9 is a longitudinal cross-sectional view of the sanitary washing device 100 at the time of toilet pre-cleaning, and FIG. 10 is an enlarged cross-sectional view for explaining the toilet nozzle 40 in the state of FIG. 9 and the surrounding structure.

  First, as shown in FIGS. 9 and 10, when the user enters the toilet room and the front end of the toilet nozzle 40 is rotated, the front end moves below the toilet nozzle cover 40K, and the toilet bowl is moved. It is positioned so as to be exposed to the internal space of 700. Hereinafter, the position of the toilet nozzle 40 is referred to as a toilet cleaning position.

  In this state, cleaning water is supplied from the connecting pipe 44 to the toilet nozzle body 41. Thereby, washing water is ejected from the tip of the toilet nozzle 40.

  The wash water ejected from the toilet nozzle 40 is ejected radially in a direction substantially perpendicular to the axis of the toilet nozzle 40.

  As a result, as shown in FIG. 9, the wash water is ejected over a wide area on the inner surface centering on the waste outlet 700 </ b> D of the toilet bowl 700. As a result, the inner surface of the toilet 700 that is dry when the user enters the toilet room is wetted by the cleaning water.

  At this time, the lamp 50 emits light, so that the user can visually recognize that the toilet pre-cleaning is being performed.

  As described above, the wetness of the inner surface of the toilet bowl 700 before use prevents the dirt from adhering to the inner surface of the toilet bowl 700.

  As will be described later, the toilet pre-cleaning operation is stopped when a predetermined time elapses, the user is seated on the toilet seat 400, or the user operates the remote control device 300.

  At the end of the toilet pre-washing, the toilet nozzle motor 40m operates again. Thereby, the front-end | tip part of the toilet nozzle 40 moves inside the toilet nozzle cover 40K again, and adjoins the inner surface of the toilet nozzle cover 40K. That is, after the toilet bowl pre-washing, the toilet nozzle 40 moves to the storage position again. At this time, the wash water is continuously ejected from the tip of the toilet nozzle 40. Thereby, toilet back washing | cleaning is started.

  At the time of rear toilet cleaning, as shown by arrows B and C in FIG. 7, the wash water ejected from the toilet nozzle 40 to the inner surface on the rear side of the toilet 700 collides with the inner surface and flows down in the toilet 700.

  This reliably prevents filth from adhering to the inner surface on the rear side of the toilet 700 when the user uses the toilet apparatus 1000.

  At this time, the washing water sprayed from the toilet nozzle 40 onto the inner surface of the toilet nozzle cover 40K collides with the inner surface of the toilet nozzle cover 40K and bounces back to the tip of the toilet nozzle 40. Thereby, the front-end | tip part of the toilet nozzle 40 is wash | cleaned, and the contamination of the front-end | tip part of the toilet nozzle 40 is prevented.

  Thereafter, for example, when the user stands up from the toilet seat 400, the toilet rear cleaning is stopped. That is, the ejection of the washing water from the toilet nozzle 40 is stopped.

(4-b) Details of Structure of Toilet Nozzle Here, details of the structure of the tip of the toilet nozzle 40 will be described. FIG. 11 is a cross-sectional view showing the structure of the tip of the toilet nozzle 40 of FIG. FIG. 11A shows a longitudinal sectional view at the tip of the toilet nozzle 40, and FIG. 11B shows a sectional view taken along line C14-C14 of FIG. 11A.

  As shown in FIG. 11A, the jet forming member 42 is inserted into the inside of the front end opening 41 h of the toilet nozzle main body 41. The jet forming member 42 has an insertion shaft portion 42a. As shown in FIG. 11B, the insertion shaft portion 42a is formed with three blade members 42b extending radially outward from the shaft center. A large-diameter portion 42c, an enlarged portion 42d, and a flange portion 42e are formed from the blade member 42b toward the tip of the jet forming member 42.

  The diameter of the large diameter portion 42c is larger than the diameter of the insertion shaft portion 42a. Further, the enlarged portion 42d gradually becomes larger in diameter toward the tip of the jet forming member 42, and the diameter of the tip of the jet forming member 42 is larger than the diameter of the tip opening 41h. In addition, the outer diameter of the flange portion 42 e is larger than the outer diameter of the toilet nozzle main body portion 41.

  A step portion 41 d is formed on the inner surface of the toilet nozzle body 41. When the jet forming member 42 is inserted into the toilet nozzle main body 41, the stepped portion 41d and the blade member 42b of the jet forming member 42 come into contact with each other. At this time, the blade member 42 b acts as a spacer between the jet forming member 42 and the toilet nozzle main body 41. Thereby, the jet flow forming member 42 is positioned inside the toilet nozzle main body 41.

  In this state, the large-diameter portion 42 c of the jet flow forming member 42 protrudes from the distal end opening 41 h of the toilet nozzle main body 41, and the enlarged portion 42 d and the flange portion 42 e are located outside the toilet nozzle main body 41.

  The outer diameters of the insertion shaft portion 42 a and the large diameter portion 42 c are smaller than the inner diameter of the toilet nozzle main body 41. Therefore, a gap is formed between the inner surface of the toilet nozzle main body 41 and the outer peripheral surface of the jet forming member 42 as described above. This gap becomes the washing water flow path 41s.

  When the cleaning water is supplied from the connection pipe 44 in FIG. 8, the cleaning water passes through the flow path 41s, and the flow is accelerated to the set flow velocity by the acceleration flow path 41t configured by the large diameter portion 42c and the toilet nozzle body 41. Then, the flow is deflected by the enlarged portion 42d, spreads around the entire circumference of the flange portion 42e, and a radial jet is formed from the flange portion end 42f.

  Accordingly, the wash water is ejected radially in a direction substantially perpendicular to the axis of the toilet nozzle 40.

  A speed of 4 m / sec is necessary as a speed for the jet flow to uniformly spread on the toilet surface. To achieve this, the diameter of the large diameter portion 42c of the insertion shaft portion 42a is 4 mm, and the washing flow rate is 1 L / min. In this case, the acceleration channel 41t has a narrow channel width of about 0.3 mm.

(4-c) Flow rate of cleaning water ejected during toilet pre-washing FIG. 12 is a diagram showing the relationship between the flow rate of flushing water ejected from the toilet nozzle 40 of FIG.

  First, the ejection flow velocity and the spreading width will be described. The figure for demonstrating the definition of the ejection flow velocity and the breadth width is shown by Fig.12 (a).

  FIG. 12A shows a state in which the washing water is ejected from the toilet nozzle 40 arranged so that the axis is parallel to the vertical direction.

  Here, the ejection flow rate refers to the flow rate of the washing water ejected in the horizontal direction from the tip of the toilet nozzle 40 as indicated by the arrow WV. Further, the spreading width refers to the outer diameter of the region where the wash water is supplied 100 mm below the toilet nozzle 40 as indicated by the arrow WW.

  FIG. 12 (b) shows the experimental results when washing water is ejected from the toilet nozzle 40. In FIG. 12B, the vertical axis represents the cleaning water spreading width WW, the horizontal axis represents the cleaning water ejection flow rate, and the solid line represents the relationship between the spreading width WW and the ejection flow velocity.

  As shown in FIG. 12B, when the washing water ejection flow rate is greater than 2 m / s, the spreading width is greater than 200 mm. In this case, since wash water can be supplied to a sufficiently wide area on the inner surface of the toilet bowl 700, it is possible to sufficiently prevent filth from adhering to the inner surface of the toilet bowl 700.

  Moreover, when the jetting flow velocity of washing water is made smaller than 10 m / s, the spreading width becomes smaller than 1000 mm. In this case, it is possible to prevent the washing water from splashing outside the toilet bowl 700. Moreover, it is possible to prevent the washing water ejected from the toilet nozzle 40 from greatly rebounding on the inner surface of the toilet bowl 700 by making the ejection flow rate of the washing water smaller than 10 m / s. Thereby, it is possible to sufficiently prevent the washing water from splashing out of the toilet bowl 700.

  Therefore, by setting the ejection speed of the washing water in the range of 2 m / s to 10 m / s, it is possible to prevent the washing water from splashing outside the toilet 700 and prevent the filth from adhering to the toilet 700. It can be sufficiently prevented. In addition, it is more preferable that the ejection speed of the washing water is set in the range of 4 m / s to 8 m / s. In this case, it is possible to reliably prevent filth from adhering to the toilet bowl 700 while reliably preventing the wash water from splashing outside the toilet bowl 700.

(4-d) Operation timing and control flow of toilet pre-washing In this example, when the user enters the toilet room, the toilet pre-washing is started under the control of the control unit 4. Further, when the user uses the toilet apparatus 1000, toilet rear cleaning is performed under the control of the control unit 4. That is, when the user is seated on the toilet seat 400 (FIG. 1), scattering of the washing water from the toilet nozzle 40 (FIG. 1) to the front side is prevented. This prevents the cleaning water from adhering to the user.

  The control unit 4 performs the transition from toilet bowl pre-washing to toilet back washing based on the passage of a predetermined time, the user sitting on the toilet seat 400, or the operation of the remote control device 300 by the user.

  Here, the predetermined time is determined in advance based on an average time from when the user enters the toilet room until the user sits on the toilet seat 400. In order to determine the predetermined time, the present inventors investigated the time from when the user enters the toilet room until he / she sits on the toilet seat 400 (hereinafter referred to as “entrance sitting time”). . This survey was conducted by using a toilet room for a predetermined number of users, measuring the entrance / seating time of each user, and calculating the cumulative percentage for each entrance / seating time.

  FIG. 13 is a diagram showing the results of investigation into the room sitting time. In FIG. 13, the horizontal axis indicates entrance / seating time, and the vertical axis indicates the cumulative percentage of users.

  As shown in FIG. 13, according to this survey, it is clear that many users (over 90% of users) are seated on the toilet seat 400 after about 6 seconds after entering the toilet room. became. Therefore, in this example, the predetermined time is set to 6 seconds. In this case, the transition from toilet bowl pre-cleaning to toilet rear cleaning can be performed immediately before the user is seated on the toilet seat 400. Thus, the inner surface of the toilet 700 can be sufficiently wetted before the user is seated, and the washing water ejected from the toilet nozzle 40 can be reliably prevented from adhering to the user.

  Next, a control flow of toilet flushing processing (toilet bowl pre-washing and toilet flushing) by the control unit 4 (FIG. 3) will be described.

  FIG. 14 is a diagram illustrating a control flow of toilet cleaning processing by the control unit 4.

  As shown in FIG. 14, the controller 4 first controls the toilet nozzle motor 40m (FIG. 3) to hold the toilet nozzle 40 in the storage position (position shown in FIGS. 4 and 5) (step S1). ).

  Next, the control part 4 discriminate | determines whether the user entered the toilet room based on the output signal of the entrance detection sensor 600 (FIG. 1) (step S2). When the user enters the toilet room, the control unit 4 controls the toilet nozzle motor 40m to move the toilet nozzle 40 to the toilet cleaning position (position shown in FIGS. 9 and 10) (step S3).

  Next, the control unit 4 opens the electromagnetic valve 7 (FIG. 3) and controls the switching valve motor 16m (FIG. 3) of the switching valve 16 having a flow rate adjusting function to switch the switching valve 16 from the throttle state to the open state. By shifting the opening degree, the flush water is gradually increased from the toilet nozzle 40 so that the jet flow to the toilet is stabilized, and the lamp 50 is turned on (step S4).

Next, the control unit 4 determines whether or not a predetermined time (for example, 6 seconds) has elapsed since the user entered the toilet room (step S5). When the predetermined time has not elapsed, the control unit 4 determines whether or not the stop switch 302 (FIG. 2) has been pressed by the user (step S6).

  When the stop switch 302 is not pressed, the control unit 4 determines whether the user is seated on the toilet seat 400 (FIG. 1) based on the output signal of the seating sensor 610 (FIG. 1) (step) S7). When the user is not seated on the toilet seat 400, the control unit 4 returns to the process of step S5.

  When it is determined in step S5 that the predetermined time has elapsed, the control unit 4 turns off the lamp 50 (step S8). Next, the control unit 4 controls the toilet nozzle motor 40m (FIG. 3) to move the toilet nozzle 40 to the storage position (position shown in FIGS. 7 and 8) (step S9).

  Next, the control unit 4 determines whether or not the user has stood up based on the output signal of the seating sensor 610 (FIG. 1) (step S10). When it is determined that the user has stood up, the control unit 4 controls the electromagnetic valve 7 and the on-off valve 103 (FIG. 3) to stop the flushing of the wash water from the toilet nozzle 40 (step S11). . Thereby, the toilet bowl washing | cleaning process by the control part 4 is complete | finished.

  When it is determined in step S2 that the user has not entered the room, the control unit 4 stands by until the user enters the room.

  When the stop switch 302 is pressed by the user in step S6, or when the user is seated on the toilet seat 400 in step S7, the control unit 4 proceeds to the process of step S8.

  When the user does not stand up in step S10, the control unit 4 stands by until the user stands up.

  As described above, in this example, the toilet pre-cleaning is terminated when a predetermined time elapses after the user enters the toilet room. In this case, as described above, the inner surface of the toilet 700 can be sufficiently wetted before the user is seated, and the washing water ejected from the toilet nozzle 40 can be reliably prevented from adhering to the user.

  Further, when the user presses the stop switch 302 or the user sits on the toilet seat 400, the toilet pre-washing is finished. Therefore, even when the user is seated on the toilet seat 400 within the predetermined time, it is possible to prevent the washing water ejected from the toilet nozzle 40 from adhering to the user.

  In addition, when the user is seated on the toilet seat 400, toilet rear cleaning is performed. Thereby, it is possible to reliably prevent filth from adhering to the rear side of the inner surface of the toilet bowl 700.

  In the control flow of FIG. 14, the flushing water starts to be ejected in step S4 after the toilet nozzle 40 has moved to the toilet cleaning position in step S3, but before the toilet nozzle 40 moves to the toilet cleaning position, that is, stored. You may start ejecting washing water in the state hold | maintained in the position. In this case, the toilet nozzle 40 can be cleaned before the toilet pre-cleaning is performed. Thereby, contamination of the toilet nozzle 40 can be reliably prevented.

Further, in the control flow of FIG. 14, the toilet nozzle 40 is moved to the toilet cleaning position when the user's entry is confirmed in step S <b> 2, but the toilet nozzle 40 may be waited at the toilet cleaning position in advance. In this case, since the toilet pre-cleaning can be started quickly, a sufficient amount of cleaning water can be supplied to the toilet 700. Thereby, it can prevent more reliably that filth adheres to toilet bowl 700. FIG. When the toilet nozzle 40 is made to wait in advance at the toilet cleaning position, for example, after the user has finished using the toilet apparatus 1000, the toilet nozzle 40 may be moved to the toilet cleaning position when a predetermined time has elapsed. Good.

<5> Effects related to the present embodiment As described above, the present embodiment is a sanitary cleaning device that supplies cleaning water supplied from a supply source to the human body, and discharges the cleaning water to clean the human body. The human body washing nozzles 1 and 2, the human body washing water channel 202 provided between the supply source and the human body washing nozzle for flowing the washing water from the supply source to the human body washing nozzle, and the branch from the human body washing water channel A toilet nozzle 40 provided at an end of the toilet flushing water channel, a pulsation pump 14 provided upstream of the toilet nozzle, and a part of the human body washing water channel upstream of the pulsation pump. When the washing water from the supply source is ejected from the toilet nozzle 40, the human body washing water flow upstream of the pulsation pump 14 is provided. Road 20 Is partly open to the atmosphere, the influence of the supply water pressure of the water supply, which is the supply source of the wash water, is eliminated, and the wash water having a flow rate corresponding to the operating speed of the pulsation pump 14 controlled by the control unit 4 It acts so that it may be supplied to the nozzle 40, the jet flow discharged into the toilet bowl from the toilet nozzle 40 can be stabilized, and the jet stream from the toilet nozzle 40 can be prevented from jumping out of the toilet bowl.

  In this case, since the wash water on the primary side of the pulsation pump 14 is open to the atmosphere, the wash water delivered by the pulsation pump 14 operates without being affected by the supply water pressure of the water supply that is the supply source. Since the pulsating jet according to the flow rate can be ejected from the toilet nozzle 40, the toilet ball surface is preliminarily wetted by the jet from the toilet nozzle to prevent the stool from adhering, and it also has the effect of removing dirt already attached to the toilet ball surface. Can be improved.

  Further, since the heat exchanger 12 for heating the wash water is provided upstream of the pulsation pump 14, the wash water warmed by the heat exchanger 12 can be pulsated and ejected from the toilet nozzle 40. The cleaning effect on can be further improved.

  Further, an electromagnetic valve 7 is provided on the upstream side of the atmosphere opening portion 8, and the atmosphere opening portion has a water inlet and a water outlet and a tank 8a for storing washing water, and a water level for outputting a signal according to the water level of the tank. The sensor 11 and an atmosphere opening hole 8c that forms an air layer 8e by opening the inside upper part of the tank to the atmosphere are provided, and the water inlet is configured to open to the air layer. Since there is an air layer that is open to the atmosphere between the water inlet that communicates with the water supply that is the water supply source, the wash water downstream from the air release portion 8 flows back to the water supply that is the supply source of the wash water. Can be prevented.

  Further, the control unit 4 opens the electromagnetic valve 7 when the water level of the tank 8a reaches a predetermined lower limit water level, and closes the electromagnetic valve when the water level of the tank 8a reaches a predetermined upper limit water level so that the water level and the air layer in the tank are within a predetermined range. By having a water level control unit to maintain in the inside, the water level control unit maintains the water level between the upper limit water level and the lower limit water level with a simple configuration in which the water level control unit controls the opening and closing of the solenoid valve with a signal from the water level sensor Since the air layer can be secured without increasing the size of the tank, a compact and compact sanitary washing device can be provided.

(Embodiment 2)
In the first embodiment of the present invention described above, the atmosphere opening portion 8 and the heat exchanger 12 are configured as separate parts as shown in FIGS. 3 and 4. The atmosphere opening portion 8 and the heat exchanger 12 are not necessarily configured separately, and the atmosphere opening portion 8 and the heat exchanger 12 may be integrally formed as shown in FIG.
The configuration shown in FIG. 15 is one in which the heater 12h of the heat exchanger 12 is built in the tank 8a of the atmosphere opening unit 8 shown in FIG.

  The second embodiment is different from the first embodiment described above only in this part, and the other parts are the same. Therefore, the operation and effect are the same, but the components of the sanitary washing device can be reduced, and more compact. An inexpensive sanitary washing device can be provided.

  As described above, the sanitary washing device according to the present invention has the influence of the supply water pressure of the water supply, which is the supply source of the wash water, because a part of the human body wash water flow channel upstream of the pulsation pump is opened to the atmosphere. This eliminates the problem that the washing water having a flow rate corresponding to the operating speed of the pulsation pump controlled by the control unit is supplied to the washing nozzle, and an arbitrary pulsating jet from the washing nozzle can be stably realized. Therefore, the present invention can be applied not only to a warm water cleaning toilet seat but also to a sanitary cleaning device such as a face, head, hand, or foot, or a cleaning application other than animals such as pets or living things.

1 Human body cleaning nozzle (wet nozzle)
2 Human body cleaning nozzle (bidet nozzle)
DESCRIPTION OF SYMBOLS 3 Nozzle washing nozzle 4 Control part 7 Solenoid valve 8 Atmospheric release part 8a Tank 8b Inlet 8c Atmospheric opening 8d Outlet 8e Air layer 11 Water level sensor 12 Heat exchanger 12h Heater 14 Pulsating pump (positive displacement pump)
16 Switching valve 20 Nozzle (human body washing nozzle)
40 Toilet Nozzle 202 Human Body Wash Water Channel 205 Toilet Wash Water Channel

Claims (4)

A sanitary washing device that supplies the human body with wash water supplied from a supply source,
A human body cleaning nozzle that discharges cleaning water to clean the human body;
A human body washing water flow path that is provided between the supply source and the human body washing nozzle and distributes washing water from the supply source to the human body washing nozzle;
A toilet nozzle provided at an end of the toilet flushing water channel branched from the human body washing water channel;
A pulsation pump provided upstream of the toilet nozzle and the human body washing nozzle ;
An atmosphere opening part for releasing a part of the human body washing water flow channel upstream from the pulsation pump, and a control part for controlling each part ;
With
The controller controls the operating speed of the pulsation pump, and in the case of a small washing flow rate, the pulsation width of the washing water pressure supplied from the pulsation pump to the toilet nozzle and the human body washing nozzle is reduced and increased. A sanitary washing device that increases the pulsation width in the case of a washing flow rate . The sanitary washing apparatus according to claim 1, further comprising a heat exchanger that heats washing water upstream of the pulsation pump. Provided with an electromagnetic valve upstream from the atmosphere opening portion, the atmosphere opening portion has a water inlet and a water outlet and stores a wash water, a water level sensor that outputs a signal according to the water level of the tank, The sanitary washing apparatus according to claim 1 or 2, wherein an air opening hole for forming an air layer by opening the inside upper part of the tank to the air is provided, and the water inlet is open to the air layer. The control unit opens the electromagnetic valve when the water level of the tank reaches a predetermined lower limit water level, and closes the electromagnetic valve when the water level of the tank reaches a predetermined upper limit water level to maintain the water level and the air layer in the tank within a predetermined range. The sanitary washing device according to claim 3, further comprising a water level control unit.