JP2015218506A - Water discharge system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water discharge system capable of preventing water from being blown out from an intake port of a foam generation unit onto a floor in a toilet or a kitchen even when a flow path in a foam generation unit is clogged.SOLUTION: A water discharge system 1 includes a foam generation unit 5 which is connected to water supply pipes 3 and 4 for supplying washing water to a washing object 2 by taking in the air into the washing water in a foam generation unit 5 from an intake port 11 of the foam generation unit 5 as fine foam by means of negative pressure and discharges the washing water containing the fine foam toward the washing object 2. The foam generation unit 5 is provided with a hose 21 one end of which is connected to the intake port 11 and the other end of which is opened inside the washing object 2.

Description

  The present invention relates to a water discharge device that discharges cleaning water to a cleaning object (or water discharge object) such as a flush toilet or a kitchen sink, and particularly relates to a device that discharges cleaning water containing fine foam.

  Conventionally, as this type of water discharge device, a foam generating unit (also referred to as an air mixing member) is provided in a water supply pipe that supplies cleaning water to an object to be cleaned as described in Patent Document 1, and air is taken into the cleaning water, It has been known that it is made fine foam to relieve water and increase its detergency.

  The foam generating unit subdivides the tubular body constituting a part of the water supply pipe, the intake port for taking air into the wash water in the tubular body, and the foam taken from the intake port. It is common to have a foam micronizer made of a mesh or a rectifier. Moreover, what made it usable also in the low water pressure area by making the front-end | tip diameter of the water outlet of a foam generation unit small and raising a flow velocity is also known.

JP-A-9-125502

  However, if the foam micronizer is provided near the tip of the spout or if the tip diameter of the spout is reduced, the pressure loss with respect to the water supply in the foam generating unit increases, so cleaning is performed from the inlet of the foam generating unit. There is a risk of water blowing out. Also, if the flow path in the foam generation unit is blocked due to cleaning, or the flow path in the foam generation unit freezes and closes in cold areas, a large amount of washing water will be discharged from the air inlet of the foam generation unit. Since it erupts, there is a risk of water leaking to the floor of a toilet or kitchen and causing great damage. In addition, if the water supply continues to be pressurized while the flow path in the foam generation unit is blocked, excessive internal pressure may be applied to the water supply pipe upstream of the foam generation unit, possibly leading to disconnection or breakage of the connection part. is there.

  In view of this point, the present invention has a problem in that water is discharged from the air inlet of the foam generation unit when the flow path in the foam generation unit is blocked by cleaning or the like or frozen and closed in a cold region. It is an object of the present invention to provide a water discharger that can prevent squirting and leaking to the floor of a toilet or kitchen.

  In order to solve the above-mentioned problem, among the present invention, the first invention provides a foam generating unit having an intake port in a water supply pipe that supplies cleaning water to an object to be cleaned as a water discharge device, and the foam generating unit The air is taken into the washing water in the foam generation unit as fine foam by negative pressure from the air inlet, and the washing water containing the fine foam is discharged to the object to be cleaned. The other end of the hose is provided facing the inside of the object to be cleaned.

  Moreover, 2nd invention provides the foam generation unit which has an inlet in the water supply pipe which supplies washing water to a washing | cleaning target object as a water discharging apparatus, and finely evacuates air from the said inlet of the said foam generation unit by negative pressure Incorporated into the washing water in the foam generation unit as foam, and configured to discharge the washing water containing the fine foam to the object to be cleaned, in the upstream side of the foam generation unit of the water supply pipe, A flow rate detector that detects the flow rate of the wash water flowing in the water supply pipe, and a control valve that closes when the flow rate of the wash water decreases by a predetermined amount from the detection result of the flow rate detector. To do.

  According to the water discharge device of the present invention, when the flow path in the foam generating unit is blocked by dust generated by cleaning or the like, or frozen and blocked in a cold region, the air intake of the foam generating unit The washing water ejected from the mouth is discharged into the inside of the washing object through the hose. Alternatively, the control valve closes and the supply of cleaning water to the foam generating unit is shut off. For this reason, it is possible to prevent the washing water from being ejected from the air inlet of the foam generating unit and leaking to the floor of a toilet or kitchen, and damage due to water leakage can be prevented.

FIG. 1 is a side view showing the overall configuration of the water discharger according to the first embodiment of the present invention. FIG. 2A is an exploded perspective view of a foam generating unit that is a main part of the water discharging device, and FIG. 2B is an enlarged perspective view of a rectifier of the foam generating unit. FIG. 3 is a longitudinal side view of the foam generating unit. FIG. 4 is a perspective view of the foam generating unit. FIG. 5 is a longitudinal side view of the vicinity of the equipment storage portion of the flush toilet. FIG. 6 is a view corresponding to FIG. 1 showing the second embodiment. FIG. 7 is a view corresponding to FIG. 1 showing a third embodiment. FIG. 8 is a view corresponding to FIG. 1 showing a fourth embodiment.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments that are modes for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows an overall configuration of a water discharge device 1 according to a first embodiment of the present invention. The water discharge device 1 discharges cleaning water containing fine foam onto the cleaning surface of the flush toilet 2 that is the object to be cleaned, and the first water supply pipe 3, the second water supply pipe 4, and the generation of foam in order from the upstream side. The unit 5 is connected.

  The first water supply pipe 3 is made of synthetic resin or metal, and is arranged in a state of being vertically erected outside the toilet room, and supplies cleaning water from the lower end side to the upper end side. Although the lower end of the 1st water supply pipe 3 is not illustrated, it is connected to a water pipe. A connecting portion 3 a for connecting to the second water supply pipe 4 is provided at the upper end portion of the first water supply pipe 3 so as to protrude in the horizontal direction.

  The second water supply pipe 4 is flexible, and a part of the second water supply pipe 4 is drawn from the outside of the toilet room to the rear of the flush toilet 2 in the toilet room, and is connected to the upstream end (the connection portion 3a of the first water supply pipe 3). The cleaning water is supplied from the connection end to the downstream end (connection end to the foam generating unit 5).

  As shown in detail in FIGS. 2A, 2B and 3, the foam generation unit 5 includes a tubular body 10 constituting a part of the water supply pipe, and an intake port for taking air into the wash water in the tubular body 10 as foam. 11 and a rectifier 12 as a foam micronizer for subdividing the taken-in foam.

  The tubular body 10 includes a tapered nozzle tube 13 whose flow path diameter gradually decreases toward the downstream side, an ejector tube 14 into which the tip (downstream end) of the nozzle tube 13 is inserted, and a downstream end of the ejector tube 14. The water discharge pipe 15 is connected to the water discharge pipe 15. The ejector pipe 14 is a venturi pipe. In other words, the ejector pipe 14 includes an upstream large diameter portion 14a whose flow path diameter is gradually reduced toward the downstream side, a small diameter portion 14b whose path diameter is narrowed down toward the downstream side, and a downstream whose flow path diameter is gradually increased toward the downstream side. The large side diameter portion 14c is formed continuously in order from the upstream side toward the downstream side. The water discharge pipe 15 has a throttle portion 15a whose flow path diameter gradually decreases toward the downstream side, and a circular water discharge port 15b connected to the tip of the throttle portion 15a, and the wash water flowing in the water discharge pipe 15 Can be used even in a low water pressure region.

  The intake port 11 is provided in the upstream large-diameter portion 14a of the ejector pipe 14 of the tubular body 10, and is close to the tip of the nozzle pipe 13 inserted into the upstream large-diameter portion 14a of the ejector pipe 14. It has become. And the negative pressure generate | occur | produces in the flow path of the upstream large diameter part 14a of the ejector pipe | tube 14 with the washing water which flows in into the ejector pipe | tube 14 from the front-end | tip of the nozzle pipe | tube 13, and this negative pressure makes air from the inlet port 11 foam. The cleaning water in the ejector pipe 14 is taken in.

  The rectifying body 12 is disposed in a state of being fitted inside the ejector pipe 14 at the connection portion between the ejector pipe 14 and the water discharge pipe 15 of the tubular body 10. 2B, the rectifying body 12 is integrally formed by connecting a mandrel part 12a and a cylindrical part 12b that are concentrically positioned with each other by a plurality of (three in the figure) partition parts 12c. ing. The rectifier 12 rectifies the cleaning water containing the foam flowing from the ejector pipe 14 to the water discharge pipe 15 of the tubular body 10, and subdivides the foam by applying a shearing force to the foam, and the water discharge pipe 15. The washing water containing fine foam is discharged.

  The foam generation unit 5 further includes a liquid medicine mixing device 16 for mixing the liquid medicine into the washing water in the tubular body 10. Although not shown, the liquid medicine mixing device 16 has a liquid storage part for storing the liquid medicine, and an appropriate amount of liquid medicine from the liquid storage part through an injection port 17 provided in the small diameter part 14b of the ejector tube 14 of the tubular body 10. And a supply unit that supplies and mixes the cleaning water in the tubular body 10. Examples of the liquid medicine include detergents containing surfactants or aqueous solutions such as fragrances.

  Here, the foam generation unit 5 is disposed in a device storage unit 20 (see FIG. 5) formed in the rear part of the flush toilet 2 in the toilet room. The nozzle pipe 13 of the foam generating unit 5 is connected to the downstream end of the second water supply pipe 4 drawn into the toilet room. On the other hand, the water outlet 15b of the water discharge pipe 15 of the foam generating unit 5 is opened in a horizontal state on the inner surface of the ball that is the cleaning surface of the flush toilet 2, and the cleaning water containing fine foam is discharged to the inner surface of the ball of the flush toilet 2. It is supposed to be.

  As a feature of the present invention, as shown in FIGS. 1 and 4, one end of a flexible synthetic resin hose 21 is connected to the air inlet 11 of the foam generating unit 5. As shown in FIG. 5, the other end of the hose 21 extends through the device storage portion 20 of the flush toilet 2 to the upper side of the bowl of the flush toilet 2, and the other end of the hose 21 is connected to the device storage portion 20. It is attached by being inserted into the insertion port 22 formed inside. The insertion port 22 is a through hole, and therefore, the other end of the hose 21 inserted into the insertion port 22 is attached so as to face the ball from the upper side of the flush toilet 2.

  In addition, the first water supply pipe 3 upstream of the foam generating unit 5 has a flow rate detector 23 for detecting the flow rate of the cleaning water flowing in the first water supply pipe 3 at the connection portion 3a on the downstream end side thereof. An electromagnetic control valve 24 is provided at a location upstream of the flow rate detector 23. A detection signal from the flow rate detector 23 is input to a control unit 25 including a microcomputer that controls the control valve 24. The control valve 24 is in a normally open state under the control of the control unit 25, and the flow rate of the cleaning water flowing through the first water supply pipe 3 based on the detection result of the flow rate detector 23 is a normal flow rate (11 L / min). The closing operation is performed when the predetermined amount is decreased (from about 0 to 8 L / min).

  Next, the effect of the water discharging apparatus 1 is demonstrated. When the flow path in the foam generating unit 5 is blocked by dust generated by cleaning or the like, or frozen in a cold region and blocked, the washing water is ejected from the air inlet 11 of the foam generating unit 5 However, this washing water is discharged to the inside of the bowl of the flush toilet 2 through a hose 21 having one end connected to the air inlet 11. For this reason, it is possible to prevent the washing water from being ejected from the air inlet 11 of the foam generating unit 5 and leaking to the floor of the toilet, and damage due to water leakage can be prevented.

  In addition, when the flow path in the foam generation unit 5 is blocked, the washing water in the first and second water supply pipes 3 and 4 decreases or stops flowing, so the flow rate detector 23 detects the state and detects it. Under the control of the control unit 25 that receives the signal, the control valve 24 closes to shut off the first water supply pipe 3. For this reason, it is possible to prevent the washing water from being ejected from the air inlet 11 of the foam generating unit 5 in a double manner. Moreover, an excessive internal pressure is applied to the first and second water supply pipes 3 and 4 on the upstream side of the foam generating unit 5 due to the continued pressurization by the water supply while the flow path in the foam generating unit 5 is closed. It is possible to prevent the connection portion from being disconnected or damaged.

  Here, one end of the hose 21 is connected to the air inlet 11 of the foam generating unit 5, and the other end of the hose 21 is attached to the inside of the bowl above the bowl of the flush toilet 2. For this reason, for the washing water in the foam generating unit 5, air is taken in as foam from the air inlet 11 through the hose 21, and the suction of air from the air inlet 11 is affected. Absent.

  Further, a blockage point in the case where the flow path in the foam generation unit 5 is blocked by dust generated by cleaning or the like, or frozen and blocked in a cold region will be considered. Since the flow path in the foam generation unit 5 is narrowed at the tip of the nozzle tube 13 of the tubular body 10, the small diameter portion 14 b of the ejector tube 14, and the arrangement position of the rectifying body 12, cleaning and the like in the foam generation unit 5 These closed portions are when these flow paths are blocked. In a cold region, water of 0 ° C. or less flows through the flow path in the foam generation unit 5, and when it collides with the rectifier 12, the water changes to ice, resulting in an overcooling phenomenon that blocks the flow path. When the flow path in the foam generation unit 5 freezes and closes, the closed portion is upstream of the rectifier 12. Therefore, the closed portion when the flow path in the foam generating unit 5 is blocked by dust generated by cleaning or the like or frozen and closed in a cold region is a portion upstream of the rectifier 12. The water outlet 15b of the water discharge pipe 15 is hardly blocked.

  FIG. 6 shows the overall configuration of the water discharge device 30 according to the second embodiment of the present invention. The water discharging apparatus 30 is the same as the water discharging apparatus 1 which concerns on 1st Embodiment, and discharges the washing water containing a fine foam to the washing | cleaning surface of a flush toilet (not shown), and is 1st water supply in order from an upstream side. The pipe 3, the second water supply pipe 4, and the foam generating unit 5 are connected.

  The foam generation unit 5 is basically the same as that in the first embodiment, and the same members are denoted by the same reference numerals and description thereof is omitted. In relation to the foam generation unit 5, the difference from the first embodiment is that the air inlet 11 of the foam generation unit 5 is only open to the atmosphere without being connected to the hose.

  In the case of the second embodiment, as a feature of the present invention, the flow rate of the cleaning water flowing in the first water supply pipe 3 is set in the first water supply pipe 3 as in the case of the first embodiment. A flow rate detector 23 for detection and an electromagnetic control valve 24 are provided at a site upstream of the flow rate detector 23. The detection signal of the flow rate detector 23 is input to the control unit 25 that controls the control valve 24. The control valve 24 is in a normally open state under the control of the control unit 25, and the flow rate of the wash water flowing through the first water supply pipe 3 is reduced by a predetermined amount as compared with the normal state as a result of detection by the flow rate detector 23. When it is closed.

  Next, the function and effect of the water discharge device 30 will be described. When the flow path in the foam generating unit 5 is blocked by cleaning or the like, or frozen and blocked in a cold region, the washing water is temporarily ejected from the air inlet 11 of the foam generating unit 5. However, since the wash water in the first and second water supply pipes 3 and 4 decreases or does not flow, the flow rate detector 23 detects the state and controls under the control of the control unit 25 that receives this detection signal. The valve 24 closes and shuts off the first water supply pipe 3. For this reason, the washing water does not erupt continuously and in large quantities from the air inlet 11 of the foam generation unit 5 and does not accumulate on the toilet floor, thereby preventing damage due to water leakage.

  FIG. 7 shows an overall configuration of a water discharge device 40 according to the third embodiment of the present invention. The water discharge device 40 has the same configuration as the water discharge device 30 according to the second embodiment, and has the following characteristic points.

  That is, the water discharge device 40 includes a bypass line 41 that connects the water discharge port 15 b side of the foam generation unit 5 and the upstream end of the second water supply pipe 4 that is a part downstream of the control valve 24, and a bypass line And a second control valve 42 provided in the middle of 41. The second control valve 42 is of the electromagnetic type, like the control valve 24, and is normally closed under the control of the control unit 25, and the first water supply pipe 3 according to the detection result of the flow rate detector 23. The opening operation is performed when the flow rate of the cleaning water flowing through the inside is reduced by a predetermined amount from the normal time.

  And in 3rd Embodiment, not only there exists an effect similar to the case of 2nd Embodiment, but the flow path in the foam generation unit 5 obstruct | occluded upstream from the rectifier 12 (refer FIG. 3). In this case, the second control valve 42 opens under the control of the control unit 25. As a result, the pressure of the wash water in the portion downstream of the control valve 24 of the first water supply pipe 3 and the pressure in the second water supply pipe 4 passes through the bypass pipe 41 and is on the side of the spout 15b of the foam generation unit 5 or the flush toilet It comes out to the 2 side. For this reason, there is also an effect that it is possible to prevent the connection portion from being disconnected or damaged due to an excessive internal pressure applied to the first and second water supply pipes 3 and 4.

  FIG. 8 shows an overall configuration of a water discharge device 50 according to the fourth embodiment of the present invention. The water discharge device 50 has the same configuration as the water discharge device 30 according to the second embodiment, and has the following characteristic points.

  That is, the water discharge device 50 includes a heater 51 that heats the foam generating unit 5, a power source 52 connected to the heater 51, and an open / close switch 53. The open / close switch 53 is normally in the off position as shown in the figure under the control of the control unit 25, and the flow rate of the cleaning water flowing through the first water supply pipe 3 based on the detection result of the flow rate detector 23 is higher than normal. When the fixed amount is decreased, the position is switched to the on position, and the heater 51 is turned on.

  And in 4th Embodiment, not only there exists an effect similar to the case of 2nd Embodiment, but when the flow path in the foam generation unit 5 freezes and closes in a cold district, Under control, the heater 51 is turned on, and the foam generating unit 5 is heated by the heater 51. Thereby, since the freezing of the flow path in the foam generation unit 5 is quickly eliminated, the connection portion is disconnected or damaged due to excessive internal pressure applied to the first and second water supply pipes 3 and 4. It is also effective as a countermeasure for cold regions.

  The present invention is not limited to the first to fourth embodiments, but includes various other forms. For example, in each of the above-described embodiments, the foam generation unit 5 includes the tubular body 10 constituting a part of the water supply pipe, the intake port 11 for taking air into the washing water in the tubular body 10, and the incorporated foam. It was set as the structure provided with the rectifier 12 for subdividing. However, the present invention is not limited to the foam generating unit 5 having such a configuration, and the same is applied to a unit provided with other foam fine units such as a net or the like instead of the rectifying body 12 or a unit not provided with a foam micro unit. Can be applied to.

  In each of the above embodiments, the case where the present invention is applied to the water discharge devices 1, 30, 40, 50 for discharging the cleaning water to the cleaning surface of the flush toilet 2 has been described. Of course, the present invention can be similarly applied to a water discharging device that discharges water.

  Furthermore, in the said 3rd and 4th embodiment, it was set as the structure which open | releases the inlet 11 of the foam generation unit 5 to air | atmosphere similarly to the case of 2nd Embodiment. However, in the present invention, as in the first embodiment, one end of the hose 21 is connected to the air inlet 11 of the foam generation unit 5 and the other end of the hose 21 faces the inside of the bowl of the flush toilet 2. It may be configured.

1, 30, 40, 50 Water discharge device 2 Flush toilet (object to be cleaned)
DESCRIPTION OF SYMBOLS 3 1st water supply pipe 4 2nd water supply pipe 5 Foam generation unit 11 Intake port 21 Hose 23 Flow rate detector 24 Control valve 41 Bypass line 42 2nd control valve 51 Heater

Claims (5)

The water supply pipe that supplies the cleaning water to the object to be cleaned is provided with a foam generating unit having an air inlet, and air is taken into the cleaning water in the foam generating unit as fine foam from the air inlet of the foam generating unit by a negative pressure. The washing water containing the fine foam is configured to spout the washing object,
One end of a hose is connected to the intake port, and the other end of the hose is provided facing the inside of the object to be cleaned.   A flow rate detector that detects the flow rate of the wash water flowing in the water supply pipe at a portion upstream of the foam generating unit of the water supply pipe, and the flow rate of the wash water from a normal result based on the detection result of the flow rate detector. The water discharging apparatus according to claim 1, further comprising a control valve that closes when the predetermined amount is decreased. A water supply pipe that supplies cleaning water to the object to be cleaned is provided with a foam generating unit having an air inlet, and air is taken into the cleaning water in the foam generating unit as fine foam from the air inlet of the foam generating unit as a fine foam by negative pressure. The washing water containing the fine foam is configured to spout the washing object,
A flow rate detector that detects the flow rate of the wash water flowing in the water supply pipe at a portion upstream of the foam generating unit of the water supply pipe, and the flow rate of the wash water from a normal result based on the detection result of the flow rate detector. And a control valve that closes when the predetermined amount is reduced.   A bypass pipe that communicates the water outlet side of the foam generating unit and a portion of the water supply pipe that is downstream of the control valve; and the bypass pipe that is provided in the bypass pipe. The water discharging apparatus according to claim 2 or 3, further comprising a second control valve that opens when the flow rate is reduced by a predetermined amount than when normal.   A heater for heating the foam generation unit is further provided, and the heater is provided so that the power is turned on when the flow rate of the cleaning water is reduced by a predetermined amount from the normal state as a result of detection by the flow rate detector. Item 4. A water discharge device according to item 2 or 3.

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