JP2017227084A - Local washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a local washing device having a sensor for detecting the flow rate or a flow of the washing water capable of preventing degradation of detection accuracy of the flow rate of washing water or flow of the washing water.SOLUTION: A local washing device 1 includes: a washing water channel through which washing water flows; a water-supply device 41 that guides washing water from a water supply piping 3 to the washing water channel; a washing water detection device 44 which is disposed in the washing water channel for detecting the flow rate of the washing water; and a bubble suppressing part 42 which is disposed between the water-supply device 41 and the washing water detection device 44 in the washing water channel for suppressing generation of bubbles which are formed by the air contained in the washing water.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a local cleaning apparatus.

  As one form of the local cleaning device, the one shown in Patent Document 1 is known. The local cleaning device of Patent Document 1 includes a water discharge means for discharging the cleaning water, a heating means for heating the cleaning water, and a flow rate sensor 26 for detecting the flow rate of the cleaning water (see FIG. 2 of Patent Document 1).

  The flow sensor 26 is an impeller-type flow sensor. Specifically, when the rotor 32 rotates in the cylindrical swirl chamber 28 provided in the housing 27, the flow rate sensor 26 has a streamline drawn by the fluid flowing in the swirl chamber 28. An inflow path 29 and an outflow path 30 are provided so as to be substantially U-shaped via a circle. As a result, the rotor 32 can receive a sufficient fluid force when turning, so that a stable output of the flow sensor 26 can be obtained even with a minute flow rate.

  Further, the outflow path 30 of the flow sensor 26 is formed in parallel to the axial direction of the rotor 32. Thereby, when air bubbles adhere to the rotor 32, the air bubbles are easily discharged without being pushed in the axial direction by centrifugal force.

Japanese Patent No. 3620215

  However, in the above-described local cleaning device of Patent Document 1, when a relatively large bubble flows into the housing of the flow sensor, the time during which the rotor is not pushed by the cleaning water becomes relatively long. It becomes unstable. In this case, the detection accuracy of the flow rate of the flow rate sensor is lowered. In addition, the problem that the detection accuracy decreases due to air bubbles is not limited to the impeller type flow sensor, but also an electromagnetic induction type or float type flow sensor, a capacitance type or photoelectric type that detects the presence or absence of water. Also present in other water detection sensors.

  The present invention has been made in order to solve the above-described problems, and in a local cleaning device including a sensor for detecting the flow rate of cleaning water or a sensor for detecting the presence or absence of the flow of cleaning water, It aims at suppressing the fall of the detection accuracy of the presence or absence of a flow of.

  In order to solve the above-mentioned problem, a local cleaning device according to claim 1 is a local cleaning device that cleans a local part of a human body by ejecting cleaning water supplied from a water supply source. A water supply device that introduces cleaning water from a water supply source into the cleaning water channel, a cleaning water detection device that is provided in the cleaning water channel and detects the flow of the cleaning water or the flow rate of the cleaning water, and a water supply device in the cleaning water channel A bubble generation suppression unit that is provided between the cleaning water detection device and suppresses generation of bubbles formed by air contained in the cleaning water.

  According to this, since the bubble generation suppression part which suppresses generation | occurrence | production of a bubble in a washing water channel is provided in the upstream of the washing water detection apparatus, inflow of the bubble to a washing water detection apparatus is suppressed. Therefore, it is possible to suppress a decrease in detection accuracy of the cleaning water detection device that detects the presence or absence of the flow of cleaning water or the flow rate of cleaning water.

It is a perspective view which shows the local washing | cleaning apparatus by this invention. It is a schematic diagram which shows the cleaning function part with which the local cleaning apparatus shown in FIG. 1 is provided. It is a top view of the water supply apparatus, bubble generation | occurrence | production suppression part, and washing water detection apparatus which are shown in FIG. FIG. 4 is a partially enlarged side view of the outlet unit, the bubble generation suppression unit, and the washing water detection device of the water supply device shown in FIG. 3. It is a longitudinal cross-sectional view of the derivation | leading-out part of a water supply apparatus shown in FIG. 4, a bubble generation | occurrence | production suppression part, and a washing water detection apparatus. It is sectional drawing along the VI-VI line shown in FIG. 4, and has shown the state in the middle of the bubble generation | occurrence | production suppression part and the washing water detection apparatus being attached to a water supply apparatus. It is sectional drawing along the VI-VI line shown in FIG. 4, and has shown the state by which the bubble generation | occurrence | production suppression part and the washing water detection apparatus were attached to the water supply apparatus. It is a longitudinal cross-sectional view which shows the modification of the derivation | leading-out part of a water supply apparatus shown in FIG. 2, a bubble generation | occurrence | production suppression part, and a washing water detection apparatus.

  Hereinafter, an embodiment of a local cleaning apparatus according to the present invention will be described. The local cleaning apparatus 1 cleans a local part of a human body by ejecting cleaning water supplied from a water pipe 3 (corresponding to a water supply source of the present invention (see FIG. 2)). The local cleaning device 1 is attached to a sitting toilet 2 as shown in FIG. The seat-type toilet 2 has a toilet bowl 2a.

  The local cleaning device 1 includes a main body 10, a toilet seat 20, and a toilet lid 30 that covers the toilet seat 20. The main body unit 10 includes a main body casing 10a, a cleaning function unit 40 (see FIG. 2), and a control device 50 (see FIG. 2) that performs overall control of the local cleaning device 1.

  The main body casing 10a is formed in a hollow box shape by, for example, a resin material. The main body casing 10a rotatably holds the toilet seat 20 and the toilet lid 30. The main body casing 10a accommodates the cleaning function unit 40 and the control device 50 inside.

  The cleaning function unit 40 cleans the local part of the human body by ejecting cleaning water. As shown in FIG. 2, the cleaning function unit 40 includes a water supply device 41, a bubble generation suppression unit 42, a cleaning water detection device 44, a heat exchange device 45, a pump 46, and a nozzle device 47.

  Moreover, the washing | cleaning function part 40 is provided with the three connection water channels L1-L3. Each of the connection water channels L1 to L3 is a tubular hose having flexibility, for example, formed of silicon rubber. The first connection water channel L <b> 1 connects the washing water detection device 44 and the heat exchange device 45. The second connection water channel L <b> 2 connects the heat exchange device 45 and the pump 46. The third connection water channel L3 connects the pump 46 and the nozzle device 47.

  The washing water includes a water supply device 41, a bubble generation suppression unit 42, a washing water detection device 44, a first connection water channel L1, a heat exchange device 45, a second connection water channel L2, a pump 46, a third connection water channel L3, and a nozzle. It flows in the order of the device 47. That is, the water supply device 41, the bubble generation suppression unit 42, the washing water detection device 44, the first connection water channel L1, the heat exchange device 45, the second connection water channel L2, the pump 46, the third connection water channel L3, and the nozzle device 47. Constitutes a washing channel through which washing water flows. The cleaning water channel is a channel through which the cleaning water in the local cleaning device 1 flows.

  The water supply device 41 is connected to a branch faucet 3a attached to the water supply pipe 3 via a water supply hose H through which cleaning water flows. The branch faucet 3a guides the clean water flowing through the water pipe 3 to the water supply hose H as cleaning water.

  The water supply apparatus 41 introduces cleaning water from the water pipe 3 into the cleaning water channel. Specifically, the water supply apparatus 41 guides the washing water from the water supply hose H to the bubble generation suppression part 42 from the lead-out part 41f (60) (see FIGS. 3 to 5). Details of the deriving unit 41f (60) will be described later.

  In the water supply device 41, a strainer 41a, a check valve 41b, a constant flow valve 41c, a water stop electromagnetic valve 41d, and a relief valve 41e are provided in this order from the water supply hose H toward the bubble generation suppressing unit 42.

  The strainer 41a removes dust and the like contained in the cleaning water. The check valve 41b allows the flow of the cleaning water from the water supply hose H to the bubble generation suppression unit 42, but restricts the flow in the reverse direction. The constant flow valve 41c adjusts the flow rate (flow rate per unit time) of the cleaning water from the water supply hose H to be approximately constant.

  The water stop solenoid valve 41d is an electromagnetic valve that allows the flow of wash water when it is open and restricts the flow of wash water when it is closed. The water stop solenoid valve 41d is a normally closed solenoid valve that is open when energized and closed when de-energized.

  The relief valve 41e discharges cleaning water that is not sucked by the pump 46 out of the cleaning water whose flow rate is adjusted by the constant flow valve 41c from the cleaning function unit 40 (inside the toilet bowl 2a).

  Details of the bubble generation suppression unit 42 and the washing water detection device 44 will be described later. The bubble generation suppression unit 42 is provided with a first temperature sensor 43. The first temperature sensor 43 detects the temperature of the cleaning water (in particular, the temperature at the place where the first temperature sensor 43 is installed). The temperature of the cleaning water detected by the first temperature sensor 43 is transmitted to the control device 50 as a detection signal.

  The heat exchange device 45 heats the cleaning water so that the temperature of the cleaning water is a predetermined temperature. The predetermined temperature is the temperature (for example, 39 ° C.) of washing water for washing a local part of the human body. The heat exchange device 45 is provided with a heater 45a and a second temperature sensor 45b.

  The heater 45a heats the cleaning water in accordance with a control signal from the control device 50. When the cleaning water flows through the heat exchange device 45, the heater 45a directly contacts the cleaning water and heats the cleaning water so that the temperature of the cleaning water becomes a predetermined temperature. That is, the heating method of the cleaning water of the heat exchange device 45 in this embodiment is an instantaneous method. The heater 45a is a ceramic heater, for example.

  The second temperature sensor 45b detects the temperature of the cleaning water (in particular, the temperature at the place where the second temperature sensor 45b is installed). The second temperature sensor 45b detects the temperature of the cleaning water heated by the heater 45a. The temperature of the washing water detected by the second temperature sensor 45b is transmitted to the control device 50 as a detection signal.

  The pump 46 adjusts the flow rate of the wash water led out to the third connection water channel L3 in accordance with a control signal from the control device 50. In this embodiment, the pump 46 is a plunger pump, and includes a motor (not shown) and a plunger (not shown) that reciprocates by rotational driving of the motor. The flow rate of the cleaning water is adjusted by adjusting the rotational speed of the motor of the pump 46. Further, the washing water ejected from the nozzle device 47 pulsates due to the reciprocating motion of the plunger. As a result, even when the flow rate of the cleaning water is relatively small, it is possible to increase the water force for cleaning the local part of the human body as compared with the case where the cleaning water does not pulsate.

  The nozzle device 47 ejects wash water from the third connection water channel L3 toward a local part of the human body. The nozzle device 47 includes a flow path switching valve 47a, a fourth connection water channel L4, a fifth connection water channel L5, a drainage channel D, a buttocks cleaning nozzle 47b, and a bidet cleaning nozzle 47c.

  Each of the connection water channels L4 and L5 and the drainage channel D is a tubular hose having flexibility, for example, formed of silicon rubber. The fourth connection water channel L4 connects the flow path switching valve 47a and the buttocks cleaning nozzle 47b. The fifth connection water channel L5 connects the flow path switching valve 47a and the bidet cleaning nozzle 47c. The drainage channel D discharges wash water from the flow path switching valve 47a toward the toilet bowl 2a.

  In accordance with a control signal from the control device 50, the flow path switching valve 47a supplies the wash water from the third connection water channel L3 to one of the fourth connection water channel L4, the fifth connection water channel L5 and the drainage channel D. It is derived by selectively switching to one. The flow path switching valve 47a is, for example, a four-way valve.

The buttocks cleaning nozzle 47b performs buttocks cleaning. The buttocks cleaning nozzle 47b ejects the cleaning water from the fourth connection water channel L4 toward the local part of the human body.
The bidet cleaning nozzle 47c performs bidet cleaning. The bidet cleaning nozzle 47c ejects the cleaning water from the fifth connection water channel L5 toward the local part of the human body.

  Next, as shown in FIGS. 3 and 4, the details of the derivation unit 41 f (60), the bubble generation suppression unit 42, and the washing water detection device 44 of the water supply device 41 are as follows. Will be described in a state where it is attached to the water supply device 41. For convenience of explanation, the front side and the back side of the paper in FIG. 3 are the upper and lower sides of the local cleaning device 1, respectively, and the left side and the right side are the left and right sides of the local cleaning device 1, respectively. Are described as the front and the rear of the local cleaning device 1, respectively. Moreover, the arrow which shows each direction is shown in FIGS.

  The deriving unit 60 of the water supply device 41 is a part for deriving cleaning water to the bubble generation suppressing unit 42. As shown in FIGS. 3 to 6B, the lead-out portion 60 is formed with a cylindrical portion 61, a positioning portion 62, a groove portion 63, a first hook portion 64, and a second hook portion 65.

  As shown in FIG. 5, the cylindrical portion 61 is formed in a cylindrical shape having an opening at the right end. At the right end portion of the cylindrical portion 61, a lead-out port 61a for leading the cleaning water is formed. Further, the upper end portion of the right end portion of the cylindrical portion 61 is provided with a notch portion 61a1 formed by cutting a part of the peripheral side wall from the right end. Since the washing water is led out from the notch 61a1, the notch 61a1 is included in the outlet 61a.

  The positioning portion 62 is formed in an annular shape along the circumferential direction on the outer peripheral surface of the cylindrical portion 61. When a connecting portion 42a, which will be described later, of the bubble generation suppressing portion 42 comes into contact with the positioning portion 62, the bubble generation suppressing portion 42 is positioned with respect to the left-right direction by the derivation portion 60. The groove portion 63 is an annular groove formed on the outer peripheral surface of the cylindrical portion 61 along the circumferential direction. An O-ring R is fitted in the groove 63.

  Each of the hooking portions 64 and 65 regulates the bubble generation suppressing portion 42 from being detached from the water supply device 41 by being hooked on stopper portions 42a1 and 42a2 described later of the bubble generation suppressing portion 42. Each of the hook portions 64 and 65 is formed in a plate shape that protrudes from the outer peripheral surface of the cylindrical portion 61 and extends to the right side of the cylindrical portion 61 (see FIGS. 3 and 4). The first hook portion 64 and the second hook portion 65 are formed on the outer peripheral surface of the cylindrical portion 61 at positions opposite to each other. The first hook 64 is formed with a first recess 64a that opens upward (see FIGS. 3, 6A, and 6B). The second hooking portion 65 is formed with a second recess 65a that opens downward (see FIGS. 6A and 6B).

  The bubble generation suppression unit 42 is provided between the water supply device 41 and the cleaning water detection device 44 in the cleaning water channel, and suppresses generation of bubbles formed by the air contained in the cleaning water. As shown in FIGS. 4 and 5, the bubble generation suppression unit 42 includes a connection portion 42 a, a large diameter portion 42 b, and a small diameter portion 42 c.

  The connection part 42 a is a part that is connected to the derivation part 60 of the water supply device 41. The connecting portion 42a is formed in a cylindrical shape that opens at the left end. The cylindrical portion 61 of the lead-out portion 60 is inserted into the connection portion 42a from the left end opening. That is, the inner diameter of the connecting portion 42 a is formed slightly larger than the outer diameter of the cylindrical portion 61. The O-ring R attached to the cylindrical portion 61 restricts the leakage of cleaning water from the gap between the cylindrical portion 61 and the connecting portion 42a. Further, the left end of the connection portion 42 a comes into contact with the positioning portion 62 of the lead-out portion 60. Further, as shown in FIGS. 4, 6A and 6B, the connecting portion 42a is formed with stopper portions 42a1 and 42a2 and projecting portions 42a3 and 42a4.

  The stopper portions 42a1 and 42a2 are formed so as to protrude in a columnar shape from the outer peripheral surface of the connection portion 42a toward the radially outer side. The first stopper portion 42a1 and the second stopper portion 42a2 are formed on the outer peripheral surface of the connecting portion 42a at positions opposite to each other. The first stopper portion 42a1 is fitted into the first concave portion 64a of the first hook portion 64 (see FIGS. 4 and 6B). The second stopper portion 42a2 is fitted into the second recessed portion 65a of the second hooking portion 65 (see FIG. 6B). When the stopper portions 42a1 and 42a2 are fitted into the recesses 64a and 65a, the connection portion 42a is restricted from coming off the right side from the lead-out portion 60.

  The protrusions 42a3 and 42a4 are formed to protrude radially outward from the outer peripheral surface of the connection part 42a. The protrusions 42a3 and 42a4 are formed in a triangular cross section (see FIGS. 6A and 6B). In the state where the washing water detection device 44 is attached to the water supply device 41, the first protrusion 42a3 is provided below the first stopper portion 42a1, and the second protrusion 42a4 is above the second stopper portion 42a2. Provided (see FIG. 6B).

  Further, in a state where the stopper portions 42a1 and 42a2 are fitted in the recesses 64a and 65a, the first protrusion 42a3 contacts the first hook 64 and the second protrusion 42a4 contacts the second hook 65. As a result, the rotation in the direction in which the connecting portion 42a is detached from the lead-out portion 60 (the clockwise direction in FIGS. 6A and 6B) is restricted.

  The large diameter portion 42b is a cleaning water channel that guides the cleaning water from the outlet portion 60 to the small diameter portion 42c. As shown in FIG. 5, the large-diameter portion 42 b includes an inlet 42 b 1 that is provided on the right side wall of the connecting portion 42 a and introduces cleaning water from the outlet portion 60. The channel cross-sectional area of the inlet 42b1 is formed to be smaller than the channel cross-sectional area of the outlet 61a.

  The upper end of the introduction port 42b1 is formed at the same position in the vertical direction as the upper end of the inner peripheral surface of the connection portion 42a. Thereby, the inlet 42b1 is arrange | positioned above the outlet 61a. The upper end of the inlet 42b1 is the same height as the upper end of the notch 61a1 (the upper end of the outlet 61a) in the vertical direction, or is cut by the difference between the inner diameter of the connecting portion 42a and the outer diameter of the cylindrical portion 61. It is located slightly above the upper end of the notch 61a1 (the upper end of the outlet 61a).

  The large diameter part 42b is formed so as to extend rightward from the introduction port 42b1. The channel cross-sectional area of the large diameter portion 42b is formed to be constant at the channel cross-sectional area of the inlet 42b1. Therefore, the channel cross-sectional area of the large diameter portion 42b is smaller than the channel cross-sectional area of the outlet 61a.

  The small diameter portion 42 c is a cleaning water channel that leads the cleaning water from the large diameter portion 42 b to the cleaning water detection device 44. The small diameter portion 42c is formed to extend along the left-right direction. The channel cross-sectional area of the small-diameter portion 42c is formed to be constant at a channel cross-sectional area smaller than the channel cross-sectional area of the large-diameter portion 42b. Therefore, the flow passage cross-sectional area of the bubble generation suppression unit 42 is smaller than the flow passage cross-sectional area of the wash water outlet 61a of the water supply device 41 and is gradually increased from the water supply device 41 toward the wash water detection device 44. It is formed to be smaller. The first temperature sensor 43 detects the temperature of the cleaning water flowing through the small diameter portion 42c.

  The washing water detection device 44 is provided in the washing water channel and detects the flow rate of the washing water (particularly, the flow rate at the place where the washing water detection device 44 is installed (flow rate per unit time)). The washing water detection device 44 is, for example, an impeller type flow sensor. The flow rate of the cleaning water detected by the cleaning water detection device 44 is transmitted to the control device 50 as a detection signal. The washing water detection device 44 includes a housing 44a, a rotor 44b, and a photoelectric sensor 44c (see FIGS. 3 and 4).

  The housing 44a is provided in the cleaning water channel and the cleaning water flows. Washing water from the bubble generation suppression unit 42 is introduced into the housing 44a. The housing 44a is formed in a hollow cylindrical shape. The housing 44a is formed of a resin material, for example, and is transparent. The washing water from the bubble generation suppressing unit 42 is introduced into the housing 44a from the left side of the peripheral side wall at the upper end of the housing 44a.

  The housing 44a is provided with a lead-out path 44a1 for leading the wash water to the first connection water path L1. The cleaning water in the housing 44a is led out to the lead-out path 44a1 from the right side of the peripheral side wall at the upper end of the housing 44a. The lead-out path 44a1 is formed so as to extend along the left-right direction. The lead-out path 44a1 is formed so as to be approximately coaxial with the small diameter portion 42c. The flow path cross-sectional area of the lead-out path 44a1 is formed to be constant at a flow path cross-sectional area approximately the same as the flow path cross-sectional area of the small diameter portion 42c.

  The rotor 44b is rotatably accommodated in the housing 44a, and is rotated by being pushed by washing water flowing through the housing 44a. The rotor 44b is an impeller. The rotor 44b includes a rotation shaft 44b1 and a plurality of blade portions 44b2.

  Both ends of the rotating shaft 44b1 are rotatably held on the front side wall and the rear side wall of the housing 44a. The plurality of blade portions 44b2 are formed to extend radially outward from the center of the rotation shaft 44b1. The rotor 44b rotates in the direction of arrow A (clockwise direction) in FIG. 5 by being pushed by the washing water flowing from the small diameter portion 42c to the outlet path 44a1 in the housing 44a. The rotational speed (rotational speed per unit time) of the rotor 44b is directly proportional to the flow rate of cleaning water (flow rate per unit time).

  The photoelectric sensor 44c detects the rotation speed of the rotor 44b. The photoelectric sensor 44c is a transmissive photoelectric sensor 44c formed in a U shape. The rotation speed detected by the photoelectric sensor 44c is detected as the flow rate of the cleaning water. That is, the cleaning water detection device 44 detects the flow rate of cleaning water based on the rotation of the rotor 44b.

  Further, the bubble generation suppression unit 42 is provided integrally with the cleaning water detection device 44. Specifically, the connecting portion 42a, the large diameter portion 42b, the small diameter portion 42c, and the housing 44a are integrally formed of, for example, a resin material.

  Next, the operation of the above-described local cleaning device 1 will be described. In the standby state of the local cleaning device 1 (the state where no buttocks cleaning and bidet cleaning are not performed), the control device 50 puts the water stop electromagnetic valve 41d into a non-energized state, so that the water stop electromagnetic valve 41d is closed. is there. In the standby state of the local cleaning device 1, the control device 50 turns off the heater 45a and connects the flow path switching valve 47a to the third connection water channel L3 and the drainage channel D.

  When the local cleaning device 1 is in a standby state, when a switch (not shown) for cleaning the buttocks is turned on, the control device 50 performs the buttocks cleaning. Specifically, the control device 50 opens the water stop solenoid valve 41d and drives the pump 46.

  Accordingly, the cleaning water flows through the cleaning water channel from the water supply device 41 toward the nozzle device 47. At this time, when the flow rate of the cleaning water detected by the cleaning water detection device 44 is equal to or higher than the predetermined flow rate, the control device 50 determines the second temperature based on the temperature of the cleaning water detected by the temperature sensors 43 and 45b. The heater 45a is turned on so that the temperature detected by the sensor 45b becomes a predetermined temperature. The predetermined flow rate is set to a flow rate that does not cause air heating by the heater 45a in the heat exchange device 45. The wash water is drained into the toilet bowl 2a until the temperature of the wash water reaches a predetermined temperature.

  And when the temperature detected by the 2nd temperature sensor 45b turns into predetermined temperature, the control apparatus 50 sets the flow-path switching valve 47a so that the 3rd connection water channel L3 and the 4th connection water channel L4 may be connected. Control. Accordingly, the cleaning water is ejected from the buttocks cleaning nozzle 47b.

  When the butt cleaning is performed, the cleaning water flows through the water supply device 41, the bubble generation suppression unit 42, and the cleaning water detection device 44 in this order. Specifically, the washing water flows from the outlet 61 a of the outlet 60 of the water supply device 41 to the inlet 42 b 1 of the bubble generation suppression unit 42. Then, the washing water flows through the bubble generation suppressing portion 42 from the large diameter portion 42b toward the small diameter portion 42c.

  When the pressure value of the cleaning water flowing through the cleaning water channel decreases, air contained in the cleaning water (dissolved) may be released from the cleaning water to form bubbles. On the other hand, the flow path cross-sectional area of the bubble generation suppression unit 42 is formed so as to decrease stepwise as it goes from the water supply device 41 to the washing water detection device 44 as described above. Therefore, since there is no portion where the flow path cross-sectional area expands in the direction in which the cleaning water flows, a decrease in the pressure value of the cleaning water flowing through the bubble generation suppression unit 42 is suppressed. Accordingly, the generation of bubbles is suppressed in the bubble generation suppression unit 42, and the inflow of bubbles into the housing 44a is suppressed.

  When the above-mentioned buttocks cleaning is performed and the switch (not shown) for stopping the buttocks cleaning is turned on, the control device 50 stops the buttocks cleaning. Specifically, the control device 50 closes the water stop solenoid valve 41d and stops the driving of the pump 46. Further, the control device 50 turns off the heater 45a and controls the flow path switching valve 47a to connect the third connection water channel L3 and the drainage channel D. Thereby, the local washing | cleaning apparatus 1 returns to a standby state.

  Next, a method for attaching the bubble generation suppression unit 42 (and the washing water detection device 44) to the water supply device 41 will be described. First, the cylindrical portion 61 of the water supply device 41 is inserted inside the connection portion 42 a of the bubble generation suppressing portion 42 until the connection portion 42 a contacts the positioning portion 62. At this time, as shown in FIG. 6A, the first stopper portion 42a1 and the first protruding portion 42a3 of the connection portion 42a are positioned above the first recess portion 64a of the first hook portion 64, and the second hook portion 65. The second stopper portion 42a2 and the second projecting portion 42a4 of the connecting portion 42a are positioned below the second concave portion 65a.

  Then, the bubble generation suppression unit 42 is rotated in the direction of arrow B (counterclockwise direction in FIGS. 6A and 6B). Accordingly, the first hooking portion 64 gets over the first protruding portion 42a3, and the second hooking portion 65 gets over the second protruding portion 42a4. Then, as shown in FIG. 6B, the first stopper portion 42a1 fits in the first recess 64a and the second stopper portion 42a2 fits in the second recess 65a. A water detector 44) is attached.

  According to this embodiment, the local cleaning apparatus 1 cleans the local part of a human body by ejecting the cleaning water supplied from a water supply source. The local cleaning device 1 includes a cleaning water channel through which cleaning water flows, a water supply device 41 that introduces the cleaning water from the water pipe 3 into the cleaning water channel, and a cleaning water detection device 44 that is provided in the cleaning water channel and detects the flow rate of the cleaning water. And a bubble generation suppression unit 42 that is provided between the water supply device 41 and the cleaning water detection device 44 in the cleaning water channel and suppresses the generation of bubbles formed by the air contained in the cleaning water.

  According to this, since the bubble generation suppression unit 42 that suppresses the generation of bubbles in the cleaning water channel is provided on the upstream side of the cleaning water detection device 44, the inflow of bubbles into the cleaning water detection device 44 is suppressed. Therefore, it is possible to suppress a decrease in detection accuracy of the cleaning water detection device 44 that detects the flow rate of cleaning water.

  In addition, the flow path cross-sectional area of the bubble generation suppressing unit 42 is smaller than the flow path cross-sectional area of the wash water outlet 61a of the water supply device 41, and becomes smaller from the water supply device 41 toward the wash water detection device 44. Is formed.

  The pressure value of the cleaning water flowing through the cleaning water channel decreases, and air dissolved in the cleaning water is released, thereby generating bubbles in the cleaning water channel. On the other hand, the bubble generation suppression unit 42 according to the present embodiment does not have a portion where the channel cross-sectional area widens from the upstream side to the downstream side of the cleaning water channel. A decrease in value can be suppressed. Therefore, generation | occurrence | production of a bubble can be suppressed. Accordingly, it is possible to reliably suppress the inflow of bubbles into the washing water detection device 44.

In addition, the cleaning water inlet 42 b 1 of the bubble generation suppression unit 42 is disposed above the outlet 61 a of the water supply device 41.
In the case where the inlet 42 b 1 of the bubble generation suppression unit 42 is disposed below the outlet 61 a of the water supply device 41, bubbles are generated when the bubbles flow into the water supply device 41 from the water pipe 3 or in the water supply device 41. When this occurs, it is conceivable that the bubbles are not introduced into the inlet 42b1 but stay on the upper side of the outlet 61a, and the bubbles are enlarged. On the other hand, when the introduction port 42b1 is arranged on the upper side of the outlet port 61a as in the present embodiment, the bubbles are not retained on the upper side of the outlet port 61a and are introduced into the inlet port 42b1, The enlargement of bubbles can be suppressed.

Further, the bubble generation suppression unit 42 is provided integrally with the cleaning water detection device 44.
According to this, since the cleaning water detection device 44 and the bubble generation suppression unit 42 are integrally formed, an increase in the number of parts of the local cleaning device 1 can be suppressed. Therefore, cost reduction of the local cleaning apparatus 1 can be achieved. Further, the bubble generation suppression unit 42 (cleaning water channel) can be shortened as compared with the case where the bubble generation suppression unit 42 is provided separately from the cleaning water detection device 44.

  The cleaning water detection device 44 includes a housing 44a provided in the cleaning water channel and through which the cleaning water flows, and a rotor 44b that is rotatably accommodated in the housing 44a and rotates when pushed by the cleaning water. The flow rate of the cleaning water is detected based on the rotation of the rotor 44b.

  According to this, since the inflow of bubbles into the housing 44a is suppressed, the rotor 44b is prevented from rotating in an unstable manner. Therefore, a decrease in detection accuracy of the washing water detection device 44 can be reliably suppressed.

  In addition, in embodiment mentioned above, although an example of the local cleaning apparatus 1 was shown, this invention is not limited to this, Another structure can also be employ | adopted. For example, the washing water detection device 44 of the above-described embodiment is an impeller type flow sensor, but may be replaced with an electromagnetic induction type or a float type flow sensor.

  In the embodiment described above, the cleaning water detection device 44 is a flow rate sensor that detects the flow rate of cleaning water. However, instead of this, a water detection sensor that detects the presence or absence of the flow of cleaning water may be used. The water detection sensor is, for example, a capacitance type or photoelectric type water detection sensor. In this case, when the buttocks are washed, when the washing water detecting device 44 detects that there is a flow of washing water, the control device 50 is based on the temperature of the washing water detected by the temperature sensors 43 and 45b. Then, the heater 45a is turned on so that the temperature detected by the second temperature sensor 45b becomes a predetermined temperature. In this manner, the cleaning water detection device 44 detects the presence or absence of the flow of cleaning water or the flow rate of cleaning water.

  In the above-described embodiment, the washing water detection device 44 is an impeller-type flow rate sensor and transmits the flow rate of the washing water to the control device 50 as a detection signal. You may make it transmit the presence or absence of a flow as a detection signal. In this case, when the flow rate of the cleaning water is equal to or higher than the predetermined flow rate, the cleaning water detection device 44 may detect that there is a flow of cleaning water and transmit a detection signal to that effect. As described above, the cleaning water detecting device 44 detects the presence or absence of the flow of cleaning water or the flow rate of cleaning water based on the rotation of the rotor 44b.

  Further, in the above-described embodiment, the bubble generation suppression unit 42 is provided integrally with the housing 44a of the cleaning water detection device 44 (and separate from the water supply device 41). As described above, the bubble generation suppression unit 142 may be provided integrally with the lead-out unit 160 of the water supply device 41 (and separate from the housing 44a of the cleaning water detection device 144). In this case, in the derivation unit 160, the cylindrical part 161 of the water supply device 41 and the large diameter part 142b and the small diameter part 142c of the bubble generation suppression part 142 are provided integrally. As described above, the bubble generation suppression units 42 and 142 are integrally provided on one of the water supply device 41 and the washing water detection devices 44 and 144. The bubble generation suppression unit 42 may be provided separately from the water supply device 41 and the washing water detection device 44.

  Further, in the above-described embodiment, the flow path cross-sectional area of the bubble generation suppression unit 42 is formed so as to decrease stepwise from the water supply device 41 toward the washing water detection device 44. The flow path cross-sectional area of the bubble generation suppressing unit 42 may be formed so as to gradually decrease from the water supply device 41 toward the washing water detection device 44. Specifically, the bubble generation suppression unit 42 may be formed in a tapered shape in which the inner diameter gradually decreases from the water supply device 41 toward the washing water detection device 44.

  DESCRIPTION OF SYMBOLS 1 ... Local washing | cleaning apparatus, 2 ... Seat-type toilet, 3 ... Water supply pipe (water supply source), 40 ... Cleaning function part, 41 ... Water supply apparatus, 41f (60) ... Derivation part, 42 ... Bubble generation suppression part, 42a ... Connection Part, 42b ... large diameter part, 42b1 ... inlet port, 42c ... small diameter part, 43 ... first temperature sensor, 44 ... washing water detector, 44a ... housing, 44a1 ... lead-out path, 44b ... rotor, 45 ... heat exchange Apparatus, 46 ... pump, 47 ... nozzle apparatus, 50 ... control apparatus, 61a ... outlet.

Claims (5)

A local cleaning device for cleaning a local part of a human body by ejecting cleaning water supplied from a water supply source,
A washing channel through which the washing water flows;
A water supply device for introducing the cleaning water from the water supply source into the cleaning water channel;
A washing water detection device that is provided in the washing water channel and detects the flow of the washing water or the flow rate of the washing water;
A local cleaning device provided with a bubble generation suppression unit that is provided between the water supply device and the cleaning water detection device in the cleaning water channel and suppresses generation of bubbles formed by air contained in the cleaning water. .   The flow path cross-sectional area of the bubble generation suppression unit is formed to be smaller than the flow path cross-sectional area of the washing water outlet port of the water supply device and to become smaller from the water supply device toward the washing water detection device. The local cleaning apparatus according to claim 1.   The local cleaning apparatus according to claim 2, wherein the cleaning water introduction port of the bubble generation suppressing unit is disposed above the outlet port of the water supply device.   The said bubble generation | occurrence | production suppression part is a local washing | cleaning apparatus as described in any one of Claim 1 thru | or 3 integrally provided in one of the said water supply apparatus and the said washing water detection apparatus.   The washing water detection device includes a housing provided in the washing water channel and through which the washing water flows, and a rotor that is rotatably accommodated in the housing and rotates when pushed by the washing water, The local cleaning device according to any one of claims 1 to 4, wherein the presence or absence of the flow of the cleaning water or the flow rate of the cleaning water is detected based on rotation of a rotor.

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