JP2004190389A - Wash water supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wash water supply device for supplying wash water containing available chlorine components for washing hands and food. <P>SOLUTION: This wash water supply device is provided with a pump 2 for supplying wash water for dilution, and an injection pump 6 for pumping out wash water from a high concentration available chlorine wash water storage tank 5 to supply water. Dilution wash water supplied by both pumps 2, 6 are supplied to a faucet 9 through a supply line 31. The faucet 9 is provided with an infrared sensor switch 10. A solenoid valve 8 is opened when a washed object is held up to the faucet 9, and the pump 2 and the injection pump 6 are driven to discharge the dilution wash water containing the available chlorine components, from the faucet 9. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a washing water supply device for supplying washing water for hand washing and food washing.
[0002]
[Prior art]
Water released from a water tap used for hand washing and food washing contains a small amount of chlorine component, but since its concentration is extremely low, the sterilizing effect of the chlorine component cannot be expected. Therefore, the fact is that the hands and foods are usually physically washed using tap water.
However, merely washing physically with tap water cannot completely wash out or sterilize bacteria adhering to hands and foods, and a washing water supply device that can perform better washing is desired. I was
[0003]
Therefore, Japanese Patent Application Laid-Open No. 2000-51328 discloses an apparatus that generates residual chlorine by electrolysis and supplies residual chlorine water for hand washing. However, in the device disclosed in this publication, after detecting a person who intends to wash hands, the electrolytic cell is energized to start electrolysis, so that it takes time until the washing water flows out, which is inconvenient. Further, when the electrolytic cell is energized before the hand washing is performed, useless power consumption occurs.
[0004]
On the other hand, high-concentration sodium hypochlorite solution is diluted with tap water or well water as washing water for hand washing or food washing, and the generated washing water is stored in a storage tank, etc. Depending on the situation, pumping from a storage tank with a pump may be used for cleaning.
However, the cleaning water stored in the storage tank has a high chlorine component concentration, and thus is suitable for cleaning.On the other hand, the pump for pumping out the cleaning water, valves and other equipment provided in the pumping path are easily affected by the chlorine component. There is a problem that. Pumps and valves that are corrosion-resistant to chlorine components are also commercially available, but pumps and valves that are corrosion-resistant to chlorine components are more commonly used than general-purpose pumps and valves. There is a drawback that the durability is low, and a large operating load is likely to cause a failure or damage.
[0005]
For this reason, a cleaning system using cleaning water containing an effective chlorine component, and a practical system having durability has not been commercially available.
[0006]
[Patent Document 1]
JP 2000-51328 A
[0007]
[Problems to be solved by the invention]
The present invention has been made based on the above background, and an object of the present invention is to provide a washing water supply device for supplying washing water for hand washing and food washing.
Another object of the present invention is to provide a cleaning water supply device having sufficient durability in actual use.
A further object of the present invention is to provide a practical and inexpensive washing water supply device by utilizing existing pumps, water supply channels, valves and the like.
[0008]
Means for Solving the Problems and Effects of the Invention
According to the first aspect of the present invention, a first pump for pumping and sending water from a predetermined supply source, and washing water containing high-concentration effective chlorine components stored in a washing water storage tank are pumped and sent. Pump, a supply path for mixing and supplying water and cleaning water supplied by the first pump and the second pump, and discharging diluted cleaning water in which water and cleaning water are supplied through the supply path. Outlet, a solenoid valve provided in the vicinity of the outlet, which opens and closes to permit / stop outflow of diluted cleaning water from the outlet, and detects that an object to be cleaned is held over the outlet. And a control means for opening the solenoid valve in response to the detection output of the detection means, and for driving the first pump and the second pump as necessary. This is a cleaning water supply device.
[0009]
The invention according to claim 2 is a mixing tank for mixing water and washing water in the supply path, wherein the mixing path has at least two mixing chambers, and the mixed water filled in one mixing chamber is next. The washing water supply device according to claim 1, further comprising a mixing tank that can flow to the mixing chamber of (1) and generate convection mixing.
The invention according to claim 3 is characterized in that the mixing tank has an inner chamber into which mixed water flows, and an outer chamber provided around the inner chamber and into which mixed water overflowing from the inner chamber flows. 2. The cleaning water supply device according to 2.
[0010]
According to a fourth aspect of the present invention, a check valve is provided in the supply path on the downstream side of the first pump and on the upstream side of a position where the washing water fed by the second pump joins. The washing water generation device according to any one of claims 1 to 3, characterized in that:
The invention according to claim 5 is characterized in that the solenoid valve and the check valve are each made of PVC, polytetrafluoroethylene, olefin-based resin, polytetrafluoroethylene rubber or other rubber material having corrosion resistance to the washing water, or titanium or encolloy. The cleaning water supply device according to claim 4, wherein the cleaning water supply device is made of a metal material such as
[0011]
According to a sixth aspect of the present invention, a pressure tank is provided in a supply path downstream of the check valve, and a pressure switch is provided at an upper portion of the pressure tank, and the pressure switch switches the first and second pumps. The cleaning water supply device according to claim 5, wherein driving is controlled.
According to a seventh aspect of the present invention, there is provided a cleaning water storage tank for storing cleaning water containing an effective chlorine component whose concentration has been adjusted for cleaning, and a cleaning path for pumping the cleaning water from the storage tank through a pumping path. A pump for supplying water to the pump, a flow detecting means provided in the pumping path, for detecting whether or not the cleaning water is flowing in the path, and a cleaning path provided in the supply path, for supplying the cleaning water to the supply path. A pressure tank for applying pressure, a pressure detection means provided in the pressure tank, for detecting water pressure in the pressure tank, and a pump in response to a detection pressure of the pressure detection means decreasing to a predetermined low value. And control means for stopping the pump in response to the detection pressure of the pressure detection means rising to a predetermined high value, or in response to the flow detection means not detecting the flow, Wash A water supply device.
[0012]
The invention according to claim 8 is characterized in that the control means stops the pump in response to the flow detection means not detecting the flow within a predetermined time after the driving of the pump is started. Cleaning water supply device.
According to a ninth aspect of the present invention, there is provided a flow detecting pipe which is bypass-connected to the pumping path, and wherein the flow detecting means is provided in the flow detecting pipe. It is a washing water supply device of a statement.
[0013]
According to a tenth aspect of the present invention, there is provided a cleaning water storage tank for storing cleaning water containing an effective chlorine component whose concentration is adjusted for cleaning, a cleaning water in the storage tank is pumped through a pumping path, and a supply path is provided. And a pressure tank provided in the supply path for applying pressure to the washing water sent through the supply path, and a pressure detecting means provided in the pressure tank for detecting the water pressure in the pressure tank And driving the pump in response to the detection pressure of the pressure detection means decreasing to a predetermined low value, and stopping the pump in response to the detection pressure of the pressure detection means increasing to a predetermined high value. Control means, and a water level detection means for detecting a water level of the wash water provided in the wash water storage tank, wherein the control means detects the water level even after a predetermined time has elapsed after the start of driving of the pump. To the output of the means If there is no reduction, characterized in that the pump is stopped, a cleaning water supply apparatus.
[0014]
The invention according to claim 11 is the cleaning water supply device according to claim 10, wherein the inner diameter of the flow detecting tube is smaller than the inner diameter of the pumping path.
The invention according to claim 12 is the cleaning water supply device according to claim 11, wherein the flow detection tube is disposed vertically above the pumping path.
According to the configuration of claim 1, hand washing and food washing can be performed without touching the discharge port (such as a water tap), and the propagation of bacteria that may adhere to the hand or the like by touching the discharge port is prevented. be able to. Further, by holding the object to be washed over the discharge port, the washing water containing the effective chlorine component is automatically discharged, so that a sanitary and easy-to-use washing water supply device can be provided.
[0015]
According to the configuration of the second and third aspects, the water and the cleaning water can be better mixed by the mixing tank having a simple configuration, and the cleaning water having an appropriate concentration can be sent out.
According to the configuration of the fourth aspect, the check valve prevents the cleaning water containing the effective chlorine component from flowing into the first pump. Therefore, the first pump does not need to be an expensive special pump having corrosion resistance to chlorine components, and the entire apparatus can be configured at low cost.
[0016]
In the configuration of the fifth aspect, the solenoid valve and the check valve are made of a material having corrosion resistance to chlorine components, so that the durability of the device can be improved. Also, the solenoid valve and the check valve are simpler in configuration than the pump, and the device price does not become extremely high even if a member made of a corrosion-resistant material is used.
In the configuration of claim 6, since the pressure tank is provided in the supply path, the cleaning water can be stored in the pressure tank at a predetermined pressure, and the outflow of the cleaning water from the discharge port can be stabilized.
[0017]
In the structure of the seventh and eighth aspects, it is necessary to use a pump having corrosion resistance to chlorine components. In this case, a pump having low corrosion resistance which is inferior to metal pumps is used. It is possible to prevent the operation and the shutoff operation. That is, since the control means stops the pump by the pressure detecting means or the flow detecting means, the pump is immediately stopped when the pump is in the idling operation state or in the closed operation state. As a result, the pump does not generate heat due to a long idling or the like, and the pump can be prevented from malfunctioning.
[0018]
Similar to the configuration of the seventh and eighth aspects, the configuration of the ninth aspect is configured to detect not only the detection pressure of the pressure detection means but also the change of the water level detection means of the washing water storage tank and stop the pump based on the detected change. Therefore, it is possible to prevent the pump from continuing an abnormal operation state such as the idle operation or the shutoff operation for a long time. This makes it possible to maintain a good operating state of the device for a long period of time without failure of the pump.
Since the flow detecting means is provided in the bypass path, the flow detecting means can be realized by a commercially available general-purpose device. That is, the flow detecting means can be constituted by, for example, a flow switch. However, the size of a commercially available flow switch is limited. Restricted to being small.
[0019]
Therefore, if a bypass path is provided and a flow detecting means (flow switch or the like) is inserted into the bypass path, the arrangement of the flow detecting means can be performed using a small-diameter bypass path which is not related to the inner diameter of the pumping path. The structure can be made inexpensively.
In this case, by arranging the bypass path vertically above the pumping path as in claim 12, it is possible to quickly and accurately detect that the washing water is not flowing in the pumping path. It becomes possible.
[0020]
As described above, according to the present invention, it is possible to provide an inexpensive and compact washing water supply device for supplying washing water containing an effective chlorine component, which is excellent in practicality.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 1 is a diagram showing a configuration of a cleaning water supply device according to one embodiment of the present invention.
Through the stop valve 13, the city water after the cistern (water temporarily separated from the water supply system and supplied in accordance with the water supply law is referred to as the city water after the cistern) or the well water is stored through the stop valve 13. Pump (first pump for dilution) 2 is connected. The water stored in the tank 1 is pumped out by the pump 2 and sent through a supply path (supply pipe) 3. One end of a cleaning water pipe 4 is joined in the middle of the supply path 3, and the other end of the pipe 4 is connected to a high-concentration effective chlorine cleaning water storage tank 5. The washing water storage tank 5 has a built-in injection pump (second pump, usually a fixed-quantity pump) 6. The high-concentration effective chlorine washing water stored in the washing water storage tank 5 is pumped out by the injection pump 6, and the washing water flows into the supply path 3 through the washing water pipe 4. Therefore, diluted washing water in which water and washing water are mixed is sent to the supply passage 31 after the junction 7 between the supply passage 3 and the washing water pipe 4. An electromagnetic valve 8 is provided near the outlet of the supply path 31, and an infrared sensor switch 10 is arranged near the faucet 9 near the outlet. By holding a hand or an object to be washed over the faucet 9, the infrared sensor switch 10 detects the object and the electromagnetic valve 8 is opened. When the cleaning object held over the faucet 9 disappears, the infrared sensor switch 10 detects this and the electromagnetic valve 8 is closed.
[0022]
Further, when the infrared sensor switch 10 detects an object to be cleaned, the pump 2 and the infusion pump 6 are driven, and the diluted cleaning water is sent through the supply path 31.
A stop valve 11 is provided in the middle of the supply path 31 as necessary. The stop valve 11 and the stop valve 13 are closed during maintenance of the apparatus, and the supply path 31 is supplied with diluted washing water. It is not to be done.
[0023]
In this embodiment, since the infusion pump 6 pumps out high-concentration effective chlorine washing water, a pump having corrosion resistance (for example, polyvinyl chloride, polytetrafluoroethylene, olefin resin, polytetrafluoroethylene rubber or other rubber) is used. Pump made of a material or a corrosion-resistant metal material such as titanium or encolloy.
On the other hand, the pump 2 for pumping the water in the tank 1 is a general-purpose general-purpose pump, which is inexpensive without consideration of corrosion resistance and the like.
[0024]
The supply path 3 from the pump 2 to the junction 7 preferably has a check valve 12 interposed. The check valve 12 prevents the flow of water from flowing backward from the junction 7 through the supply path 3 to the pump 2. As a result, the cleaning water containing the effective chlorine component does not flow backward to the pump 2, so that it is not necessary to make the pump 2 corrosion-resistant, and the price of the entire apparatus can be reduced. When the water pressure in the supply passage 31 is not high, the water does not flow backward to the pump 2, and thus the check valve 12 can be omitted.
[0025]
The check valve 12, the stop valve 11, and the solenoid valve 8 are desirably made of a corrosion-resistant material because the flow through the supply path 31 is diluted washing water containing an effective chlorine component.
Further, it is preferable that the supply paths 3 and 31 and the washing water pipe 4 are also made of a corrosion-resistant resin material or the like.
FIG. 2 is a flowchart showing the operation of the cleaning water supply device shown in FIG. The operation of the device shown in FIG. 1 will be described again with reference to FIG.
[0026]
When an object to be washed (such as a hand or a vegetable to be washed) is held over the faucet 9 (YES in step S1), the infrared sensor switch 10 is turned on (step S2), and the pump 2 and the infusion pump 6 are driven, and The valve 8 is opened (Step S3). As a result, the diluted washing water is discharged from the faucet 9 (step S4).
On the other hand, when the washing water and the object to be washed over the faucet 9 are gone (NO in step S1), the infrared sensor switch 10 is turned off (step S5), and the pump 2 and the infusion pump 6 are turned off by turning off the switch 10. The operation is stopped, and the solenoid valve 8 is closed (step S6). Therefore, the discharge of the diluted washing water from the faucet 9 is stopped (Step S7).
[0027]
FIG. 3 is a diagram showing a configuration of a cleaning water supply device according to another embodiment of the present invention. In the configuration of FIG. 3, the same or corresponding parts as those of FIG. 1 are denoted by the same reference numerals. The feature of the configuration in FIG. 3 is that the mixing tank 15 is provided in the supply path 31. The mixing tank 15 is provided for discharging the diluted washing water having a uniform concentration by mixing the water and the washing water flowing through the supply passage 31 from the faucet 9.
[0028]
The mixing tank 15 is provided with two mixing chambers 16 and 17. The mixing chamber 16 is a cylindrical inner chamber, and the mixing chamber 17 is an outer chamber arranged to take in the periphery of the inner chamber. That is, the mixing tank 15 has a double structure of the inner chamber 16 and the outer chamber 17. The upstream supply passage 31 is connected to the inner chamber 16, and flows water into the inner chamber 16. The water accumulated in the inner chamber 16 overflows from above and enters the outer chamber 17. Then, the water accumulated in the outer chamber 17 is discharged from the faucet 9 through the downstream supply passage 31. Since the mixing tank 15 has a double structure having the inner chamber 16 and the outer chamber 17 as described above, the mixed water filled in the inner chamber 16 flows to the outer chamber 17 to cause convective mixing, and the water is effectively mixed with the water. The washing water containing the chlorine component is well mixed, and the washing water having an appropriate and uniform concentration can be discharged from the faucet 9.
[0029]
FIG. 3 shows an electrolytic water supply system 18 that supplies cleaning water (electrolytic water) containing a high-concentration effective chlorine component to the storage tank 5. In FIG. 1 as well, a configuration may be employed in which the storage tank 5 is supplied with electrolyzed water containing a high concentration of available chlorine components from the electrolyzed water supply system 18.
In FIG. 3, the illustration of the electromagnetic valve 8 and the infrared sensor switch 10 provided in connection with the faucet 9 is omitted. The faucet 9 may be provided with a manually opened and closed stopper instead of the electromagnetic valve 8 and the infrared sensor switch 10.
[0030]
FIG. 4 is a diagram showing a configuration of a cleaning water supply device according to still another embodiment of the present invention. In the apparatus of FIG. 4, the same or corresponding parts as those in FIG. 1 are denoted by the same reference numerals.
4 is that the pressure tank 20 is connected to the supply path 31. The pressure tank 20 is provided with a pressure switch 21. The pressure tank 20 is connected to a supply path 31 downstream of the junction 7. The pressure tank 20 is lined with polyvinyl chloride, polytetrafluoroethylene, olefin-based resin, polytetrafluoroethylene rubber, or the like, which has corrosion resistance to washing water containing an effective chlorine component, or is made of such a material. Has become. The pressure switch 21 is provided above the pressure tank 20. The drive of the pump 2 and the infusion pump 6 can be controlled based on the pressure detected by the pressure switch 21.
[0031]
Further, three faucets 91, 92, and 93 are provided on the downstream side of the supply path 31, and each of the faucets 91, 92, and 93 has a manual stopper.
FIG. 5 is a flowchart showing the flow of operation of the apparatus of FIG.
The operation of the device of FIG. 5 will be described with reference to FIG. When the user opens any of the faucets 91, 92, and 93 while the operation of the apparatus is started, the diluted washing water stored in the pressure tank 20 flows out from the opened faucet 91, 92, or 93. The diluted washing water is discharged. When the diluted washing water is discharged, the pressure in the pressure tank 20 gradually decreases. And the pressure of the pressure tank 20 is 0.5 [kgf / cm ^Two ] (YES in step S11), the pressure switch 21 is turned on (step S12), and the pump 2 and the infusion pump 6 are driven (step S13). By driving the pump 2 and the infusion pump 6, water and washing water flow through the supply path 3 and the pipe 4 to the supply path 31, and flow into the pressure tank 20. Therefore, the pressure of the pressure tank 20 gradually increases, and then the pressure becomes 1.0 [kgf / cm]. ^Two ] (YES in step S14), the pressure switch 21 is turned off (step S15). Then, in response to the turning off of the pressure switch 21, the driving of the pump 2 and the infusion pump 6 is stopped (step S16).
[0032]
It should be noted that the amount of diluted cleaning water generated when the pump 2 and the infusion pump 6 are driven is set to be greater than the total amount of discharge from the faucets 91, 92, 93. Thus, when the faucets 91, 92, and 93 are twisted, a stable discharge of the washing water is always possible.
FIG. 6 is a diagram showing a configuration of a cleaning water supply device according to another embodiment of the present invention. The cleaning water supply apparatus shown in FIG. 6 is different from the apparatus shown in FIGS. 1, 3 and 4 in that cleaning water containing a high-concentration effective chlorine component is diluted with water and supplied. A washing water storage tank 40 for storing washing water containing an effective chlorine component whose concentration is adjusted. In the storage tank 40, four water level sensors of a water cutoff switch 41, a low water level switch 42, a high water level switch 43, and a water increase switch 44 are arranged. The water cutoff switch 41 is a switch that detects that the washing water (diluted washing water) stored in the storage tank 40 has run out. The low water level switch 42 and the high water level switch 43 are sensors for detecting that the cleaning water stored in the storage tank 40 has reached a predetermined low water level and high water level, respectively. Normally, the washing water stored in the storage tank 40 is additionally supplied by turning on the low / low switch 42, and stopped by turning on the high water level switch 43, so that the additional water is stopped at the water level between these two switches 42, 43. Is to be kept.
[0033]
The water increase switch 44 is a switch that detects when the amount of cleaning water in the storage tank 40 has abnormally increased.
The outputs of the four switches 41-44 are provided to a controller 45 located above the storage tank 40.
The washing water stored in the storage tank 40 is pumped out by a water supply pump 47 via a pumping path 46 and sent out to a supply path 48. The pumping path 46 is provided with a flow switch 49 for detecting whether or not washing water is flowing through the pumping path 46. In the pumping path 46, a drainage path 51 that is connected to the drain via an opening / closing plug 50 is branched upstream of a position where the flow switch 49 is provided.
[0034]
Further, the storage tank 40 has an overflow port formed above the storage tank 40, and is provided with an overflow channel 52 for guiding the washing water from the overflow port to the drain.
First, a check valve 53 is inserted into the supply path 48 connected to the discharge side of the water supply pump 47, and a pressure tank 54 is connected to the supply path 48 extending downstream of the check valve 53. A pressure switch 55 for detecting the pressure in the pressure tank 54 is provided above the pressure tank 54.
[0035]
Downstream from the position where the pressure tank 54 is connected, a stop valve 56 is inserted into the supply path 48, and further downstream thereof, although not shown, is for the user to discharge the water to be washed. A faucet is provided.
The above-described detection signal of the flow switch 49 and the detection signal of the pressure switch 54 are given to the control device 45. The controller 45 gives a drive control signal to the water pump 47 based on these signals.
[0036]
FIG. 7 is a block diagram showing a configuration for control centering on the control device 45 in the device of FIG. The control device 45 includes a control circuit 47, relays 58 and 59, timers 61 and 62, a buzzer 63, a lamp 64, and the like. As described above, the outputs of the water cutoff switch 41, the low water level switch 42, the high water level switch 43, and the water increase switch 44 are given to the control circuit 57. The outputs of the flow switch 49 and the pressure switch 55 are also supplied to the control circuit 57. The control circuit 57 controls the driving of the water supply pump 47 via the relay 58 based on signals given from these switches. The output of the relay 58 is also given to the timers 1 and 2 and fed back to the control circuit 57. Further, the control circuit 57 controls the buzzer 60 and the lamp 64 via the relay 59.
[0037]
FIG. 8 is a flowchart showing a control operation of the control circuit shown in FIG.
Hereinafter, the control operation of the device shown in FIGS. 6 and 7 will be described according to the flow of the flowchart in FIG.
When the user opens the faucet (not shown) to use the washing water (step S21), the supply of the washing water starts at the pressure accumulated in the pressure tank 54. Then, the pressure in the pressure tank 54 gradually decreases. When the pressure switch 55 installed above the pressure tank 54 detects a pressure drop in the pressure tank 54 (YES in step S22), the control circuit 57 sends a signal to the relay 58 to drive the water supply pump 47 (step S23). ).
[0038]
Simultaneously with the operation of the water pump 47, the timers 1 and 2 start counting (step S24).
Next, in step S25, it is determined whether or not the cleaning water is being supplied to the storage tank 40. If the cleaning water is being supplied, the timer 2 is reset and restarted (step S26). The operation of the timer 2 will be described later.
Then, in the next step S27, it is determined whether or not there is an output from the flow switch 49. Normally, when the water supply pump 47 is driven, the washing water in the storage tank 40 is pumped through the pumping path 46. Therefore, the flow switch 49 provided in the pumping path 46 should detect that water is flowing in the pumping path 46, that is, to detect the flow rate.
[0039]
If the flow switch 49 detects the flow rate (NO in step S27), the timer 1 started in step S24 is reset and restarted (step S32).
On the other hand, if the flow switch 49 does not detect the flow rate in step S27, the timer 1 is counted (step S28), and it is determined whether or not the timer 1 has counted a predetermined time and timed up. (Step S29).
[0040]
Further, if the timer 1 has not timed out, it is determined whether or not the pressure switch 55 has detected an increase in pressure (step S30). When the normal operation is performed, the control loop of steps S25 to S30 is executed, and the drive of the water supply pump 47 is stopped when the pressure switch 55 detects the pressure increase.
Here, the pressure switch 55 has a hysteresis characteristic in the detected pressure, for example, 0.5 [kgf / cm ^Two ] To detect the pressure drop and turn on, and set to 1.0 [kgf / cm ^Two ] Is set to be turned off upon detecting a pressure rise. Therefore, the pressure in the pressure tank 54 is always 0.5 to 1.0 [kgf / cm] by the water supply pump 47. ^Two ] Will be maintained.
[0041]
Further, in this embodiment, the water supply pump 47 is controlled by the flow switch 49, the timer 1 and the timer 2 so as not to perform the idle operation or the shutoff operation. This is because the water pump 47 is a pump having corrosion resistance to cleaning water. Pumps having a corrosion resistance to cleaning water containing a chlorine component often have a liquid contact portion made of a resin material. For this reason, the durability against the idling operation and the closing operation is inferior to that of a general-purpose pump made of only metal.
[0042]
Therefore, in this embodiment, as described below, measures are taken against idling operation and closing operation in order to prevent the failure, breakage, and shortening of the life of the pump having corrosion resistance to washing water.
First, in step S23, after the driving of the water supply pump 47 is started, if the flow switch 49 does not detect the flow rate in step S27, the timer 1 measures the time during which the flow switch 49 does not detect the flow rate. (Steps S28 and S29). The time measured by the timer 1 is set to a time that does not cause a failure of the water pump 47 (for example, about 15 seconds). Therefore, when the flow switch 49 does not detect the flow rate for about 15 seconds after the water pump 47 starts driving, the timer 1 times out, an abnormality is notified by the buzzer 63 and the lamp 64, and the driving of the water pump 47 is stopped. (Step S35).
[0043]
Further, in step S24, the timer 2 also starts measuring time simultaneously with the driving of the water supply pump 47. Then, when it is determined in step S25 that the supply of the washing water to the storage tank 40 is not performed, the time measurement is continued. The additional supply of the washing water to the storage tank 40 is performed by the low water level switch 42 detecting the low water level. Normally, the additional supply of the washing water to the storage tank 40 is performed, so that the timer 2 is reset (step S26). When the time is measured, the driving of the water pump 47 is stopped, and an abnormality is notified by the buzzer 63 and the lamp 64 to protect the water pump 47 (steps S34 and S35).
[0044]
The set time of the timer 2 is, for example, about 15 minutes, and is set to a time at which a so-called closing operation abnormality does not occur.
In this embodiment, the provision of the above-described timer 1 and timer 2 makes it possible to prevent the water pump 47 from running idle by the timer 1 and prevent the water pump 47 from shutting off by the timer 2.
Further, the timer 1 causes (1) defective detection of the flow switch 49 (abnormality caused by fixing the state below the detected flow rate), (2) defective detection of the pressure switch 55 (abnormality caused by fixing a reduced pressure state), and (3) water cutoff switch 41. Detection (abnormality due to fixation in a state where water is not cut off), (4) defective driving or failure of the water supply pump 47, and (5) abnormality detection such as clogging of foreign substances in the pumping path 46 and water leakage from the piping can be simultaneously performed.
[0045]
Also, the timer 2 causes (1) defective detection of the flow switch 49 (abnormality caused by fixing the state of the detected flow rate or more), (2) defective detection of the pressure switch 55 (abnormality caused by fixing the reduced pressure state), and (3) low water level switch 42. Detection failure (abnormality caused by fixing the state in which the water level has not dropped) can be detected.
In this embodiment, in order to prevent the water pump 47 from malfunctioning due to repeated driving / stopping, the time obtained by dividing the capacity of the pressure tank 54 by the set capacity of the flow switch 49 is equal to the time of the water pump. 47 is set so as to fall within an appropriate range even when the drive / stop is repeated and the continuous operation is performed.
[0046]
Further, in order to avoid a failure due to heating of the water supply pump 47, the flow rate detected by the flow switch 49 is set so as to be within an appropriate flow rate use range even when the water supply pump 47 is continuously operated.
As a result, according to this embodiment, even if the water supply pump 47 is inferior in durability to the metal pump, it is possible to prevent the idle operation and the shutoff operation from occurring. Even if an abnormality occurs in a component of the device for some reason, the drive of the water pump 47 can be stopped before the water pump fails due to the idle operation or the shutoff operation, and the device can be stopped without causing the water pump to fail. Can be maintained.
[0047]
Furthermore, if the time measured by the timers 1 and 2 can be made variable, the device can flexibly respond to changes in the scale and contents of components such as the capacity of the water pump 47 and the storage tank 40. it can.
FIG. 9 is a diagram showing a specific installation configuration of the flow switch 49 in the apparatus shown in FIG.
As shown in FIG. 9, the flow switch 49 is not provided directly on the pipe (main pipe) of the pumping path 46, but is provided with a bypass pipe branched from the main pipe. Has become.
[0048]
More specifically, the pumping path (main pipe) 46 is configured by a pipe having a pipe diameter of 40A. Two cheeses of 40A × 13A are inserted in the middle of the main pipe 46, and a bypass pipe 461 having a pipe diameter of 13A is connected. The two cheeses are piped such that the bypass pipe 461 faces a vertically high position with respect to the main pipe 46. A flow switch 49 of a type in which a material of a liquid contact portion is made of PPO linolyl, a magnet is embedded in the paddle, and a flow is detected by a reed switch is inserted into the bypass pipe 461. Both ends of the flow switch 49 are connected by a union in consideration of maintainability such as repair and replacement of the flow switch 49.
[0049]
In addition, both the main pipe 46 and the bypass pipe 461 are formed of PVC pipes having corrosion resistance to the cleaning liquid.
As a result of this configuration, the flow switch 49 to be used can be selected without worrying about the pipe diameter of the main pipe (pumping path) 46. Then, the most general and inexpensive flow switch 49 can be employed.
In addition, by disposing the bypass pipe 461 at a position higher in the vertical direction than the main pipe, it is possible to eliminate the detection delay that has conventionally been apt to occur when the flow switch 49 is inserted into the main pipe 46. There is also an advantage that the air bite can be detected more quickly.
[0050]
The material of the above-described flow switch 49 is merely an example, and may be made of titanium, PVC resin, olefin resin, polytetrafluoroethylene rubber, or the like.
FIG. 10 is a diagram showing another example of the arrangement structure of the main pipe and the bypass pipe in the pumping path 46. As shown in FIG. 10, the main pipe 46 may be bent in a crank shape and the bypass pipe 461 may be connected in a hook shape. With this configuration, there is an advantage that the washing water flowing through the main pipe 46 easily flows into the bypass pipe 461, and the flow switch 49 provided in the bypass pipe 461 detects the flow rate more quickly.
[0051]
FIG. 11 is a view showing a modification of the cleaning water supply device shown in FIG.
A feature of the configuration shown in FIG. 11 is that a control device 45 and a pressure tank 54 are arranged above the storage tank 40. As described above, by placing the metal bed 66 on the upper portion of the storage tank 40 and disposing the control device 45 and the pressure tank 54 on the upper portion, a washing water supply device with less installation space can be configured.
[0052]
In this embodiment, the water pump 47 is a magnet pump whose liquid contact part is made of resin such as PVDF (vinylidene fluoride) because the liquid contact part of the pump needs to have corrosion resistance to the washing water. Is used. Since the magnet pump 47 does not have a sealing mechanism when stopped, it cannot be sucked up and used like a well water pump. Therefore, it is necessary to always arrange the storage tank 40 at a position vertically lower than the storage tank 40. For this reason, the storage tank 40 is separately provided at the lower side of the storage tank 40 instead of the upper part thereof.
[0053]
For this reason, the discharge port of the magnet pump 47 is directed upward in the vertical direction. In addition, a corrosion-resistant check valve having the simplest structure is inserted into a pipe (supply path) which is directed upward in the vertical direction. As a result, a reasonable pipe connection can be made to the pressure tank 54 disposed above the storage tank 40.
The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a cleaning water supply device according to an embodiment of the present invention.
FIG. 2 is a flowchart showing the operation of the cleaning water supply device shown in FIG.
FIG. 3 is a diagram showing a configuration of a cleaning water supply device according to another embodiment of the present invention.
FIG. 4 is a diagram showing a configuration of a cleaning water supply device according to still another embodiment of the present invention.
FIG. 5 is a flowchart showing the operation flow of the apparatus of FIG. 4;
FIG. 6 is a diagram showing a configuration of a cleaning water supply device according to another embodiment of the present invention.
FIG. 7 is a block diagram showing a configuration for control centering on a control device in the device of FIG. 6;
FIG. 8 is a flowchart showing a control operation of the control circuit shown in FIG. 7;
9 is a diagram showing a specific installation configuration of a flow switch in the apparatus shown in FIG.
FIG. 10 is a diagram showing another example of the arrangement structure of the main pipe and the bypass pipe in the pumping path.
11 is a view showing a modification of the cleaning water supply device shown in FIG.
[Explanation of symbols]
2 pumps (first pump, dilution pump)
3,31 supply path
4 Cleaning water piping
5. High concentration effective chlorine washing water storage tank
6. Infusion pump (second pump)
8 Solenoid valve
9 faucet
10 Infrared sensor switch
12 Check valve
15 Mixing tank
16 Mixing room (inside room)
17 Mixing room (outside room)
20 pressure tank
21 Pressure switch
40 (dilution washing water) storage tank
41, 42, 43, 44 Water level sensor
45 Control device (control box)
46 Pumping route
47 Water pump
49 Flow switch
53 Check valve
54 pressure tank
55 pressure switch
57 control circuit

Claims (12)

A first pump for pumping and delivering water from a predetermined source;
A second pump for pumping out and sending out washing water containing a high concentration of effective chlorine component stored in the washing water storage tank;
A supply path for mixing and supplying water and washing water sent by the first pump and the second pump;
A discharge port for discharging diluted cleaning water in which water and cleaning water sent through the supply path are mixed,
An electromagnetic valve that is provided near the discharge port and that opens and closes to allow / stop the outflow of the diluted washing water from the discharge port
Detecting means for detecting that the object to be cleaned is held over the discharge port,
Control means for opening the solenoid valve in response to the detection output of the detection means and for driving the first pump and the second pump as necessary. The supply path is a mixing tank for mixing water and washing water, and has at least two mixing chambers, and mixed water filled in one mixing chamber flows to the next mixing chamber and is convected. The washing water supply device according to claim 1, further comprising a mixing tank capable of causing mixing. The cleaning water supply device according to claim 2, wherein the mixing tank has an inner chamber into which mixed water flows, and an outer chamber provided around the inner chamber and into which mixed water overflowing from the inner chamber flows. 2. The check valve according to claim 1, wherein the supply path is provided with a check valve downstream of the first pump and upstream of a position where the wash water fed by the second pump joins. 3. The washing water generation device according to any one of claims 1 to 3. The solenoid valve and the check valve are made of polyvinyl chloride having corrosion resistance to the washing water, polytetrafluoroethylene, olefin resin, polytetrafluoroethylene rubber or other rubber materials, or a metal material such as titanium or encolloy. 5. The cleaning water supply device according to claim 4, wherein: A pressure tank is provided in a supply path downstream of the check valve, and a pressure switch is provided above the pressure tank, and the driving of the first pump and the second pump is controlled by the pressure switch. The cleaning water supply device according to claim 5, wherein A washing water storage tank for storing washing water containing an effective chlorine component whose concentration has been adjusted for washing,
A pump for pumping the washing water of the storage tank through a pumping path and sending it to a supply path;
A flow detecting means provided in the pumping path, for detecting whether or not washing water is flowing through the path;
A pressure tank provided in the supply path, for applying pressure to the washing water sent through the supply path,
A pressure detecting means provided in the pressure tank, for detecting water pressure in the pressure tank,
The pump is driven in response to the detection pressure of the pressure detection unit having decreased to a predetermined low value, and the detection pressure of the pressure detection unit has increased to a predetermined high value, or the flow detection unit does not detect a flow. Control means for stopping the pump in response to the control signal. The cleaning water supply device according to claim 7, wherein the control unit stops the pump in response to the flow detection unit not detecting the flow within a predetermined time after the start of driving of the pump. 9. The washing water supply device according to claim 7, further comprising a flow detection pipe bypass-connected to the pumping path, wherein the flow detection means is provided in the flow detection pipe. A washing water storage tank for storing washing water containing an effective chlorine component whose concentration has been adjusted for washing,
A pump for pumping the washing water of the storage tank through a pumping path and sending it to a supply path;
A pressure tank provided in the supply path, for applying pressure to the washing water sent through the supply path,
A pressure detecting means provided in the pressure tank for detecting the water pressure in the pressure tank; and driving the pump in response to the detection pressure of the pressure detecting means decreasing to a predetermined low value, detecting the pressure detecting means. Control means for stopping the pump in response to the pressure rising to a predetermined high value;
Having a water level detection means for detecting the level of the cleaning water provided in the cleaning water storage tank,
The control means stops the pump when the output of the water level detecting means does not change even if a predetermined time has elapsed after the start of driving of the pump. The cleaning water supply device according to claim 10, wherein an inner diameter of the flow detection tube is smaller than an inner diameter of the pumping path. The washing water supply device according to claim 11, wherein the flow detection tube is arranged vertically above the pumping path.

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