JP3225980U - Sterilizing water production equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sterilizing water production apparatus capable of efficiently producing sterilizing water in which a flow sensor has a low frequency of occurrence of defects. SOLUTION: An electrolytic cell 42 for electrolyzing an electrolytic solution into electrolyzed secondary water and pumps 32, 40 for sending the electrolytic solution to the electrolytic cell 42 are provided. A temperature sensor 44 for detecting the temperature of the electrolytic cell 42 and a control device 46 for controlling the pumps 32, 40 according to the detection signal of the temperature sensor 44 are provided. When the temperature sensor 44 detects a temperature rise in the electrolytic cell 42 due to an abnormality in the flow rate of the electrolytic solution, the control device 46 stops the pumps 32 and 40 or performs control for eliminating the abnormality. [Selection diagram] Figure 2

Description

  The present invention relates to an apparatus for producing sterilizing water used for cleaning and disinfecting purposes.

  Some of the sterilizing water used for washing food and tableware, washing hands, washing medical equipment, etc. uses electrolytic hypochlorous water obtained by electrolyzing an electrolytic solution such as salt water. Is an aqueous solution containing hypochlorous acid as a main component. The electrolyzed hypochlorite is diluted with water to a predetermined concentration to be a product as sterilizing water. Various types of manufacturing apparatuses have been proposed for manufacturing sterilizing water using electrolytic hypochlorous acid.

  For example, the sterilizing water production apparatus of Patent Document 1 is used for diluting electroless hypochlorite obtained by electrolysis and a diaphragmless electrolytic cell for electrolyzing an electrolytic solution in which sodium chloride and hydrochloric acid are added to water. A flow rate sensor section for detecting the flow rate of the diluting water flow path and a control circuit section are provided. The control circuit unit controls the electrolytic solution flow rate and the electrolytic current so as to obtain a desired residual chlorine concentration and pH based on the flow rate signal detected by the flow rate sensor unit.

  Further, the sterilizing water manufacturing apparatus of Patent Document 2 is provided with a main flow path having a tap water supply port on the upstream side and a water discharge port for discharging the manufactured sterilizing water on the downstream side, and to the main flow path. An electromagnetic valve for controlling the supply or interruption of the supply of tap water and a water flow detection means for detecting the amount of tap water supplied to the main flow path are provided. A sodium hypochlorite mixed flow passage and a dilute hydrochloric acid mixed flow passage are provided downstream of the water flow detection means in the main flow passage. The sodium hypochlorite mixed flow passage and the dilute hydrochloric acid mixed flow passage are respectively provided with a chemical liquid pump for sending sodium hypochlorite or diluted hydrochloric acid to the main flow passage, and a chemical liquid sensor for detecting the water flow of each chemical liquid. Further, there is provided control means for controlling the operation of the electromagnetic valve and each chemical liquid pump according to the detection signals from the water flow detection means and each chemical liquid sensor.

  Further, the hypochlorite production apparatus and the production apparatus of Patent Document 3 are provided with a hypochlorite reaction tank integrated with an electrolytic cell divided into a cathode chamber and an anode chamber by a cation exchange membrane. Introducing means for introducing the anode chamber product or the cathode chamber product into the hypochlorite reaction tank is provided between the acid salt reaction tank and the anode chamber or the cathode chamber. A salt water pump is provided in the salt water supply path to the anode chamber, and a water supply pump is provided in the water supply path to the cathode chamber. The salt water pump and the water supply pump adjust the discharge rate by the control device based on the measured values of the concentration and flow rate of the saline solution supplied to the anode chamber, and the electrolytic cell always responds to the generated amount of hypochlorite. Can be supplied with saline and water.

JP-A-9-253650 JP, 2010-46603, A JP, 2000-265289, A

  In the case of each of the background arts described above, the flow rate is detected in each of the diluting water flow passages of Patent Document 1, the main flow passage of Patent Document 2 and the saline and water supply passages to the electrolytic cell of Patent Document 3 and the like. A sterilizing water is manufactured while confirming the flow rate. However, many of the malfunctions of the device are caused by malfunctions of these flow rate sensors. Problems often occur due to components contained in the liquid that is conducted, slime, and the like, as compared with the case of being caused by the flow rate sensor. When a problem occurs in the flow rate sensor, it is necessary to stop the flow of the liquid in the pipe once to replace the parts, which requires time and man-hours.

  The present invention has been made in view of the problems of the background art described above, has a low occurrence frequency of defects such as a flow rate sensor, and provides a sterilizing water manufacturing apparatus capable of efficiently manufacturing sterilizing water. The purpose is to do.

  This invention is directed to an electrolytic cell that electrolyzes an electrolytic solution into electrolyzed secondary water, a pump that sends the electrolytic solution to the electrolytic cell, a temperature sensor that detects the temperature of the electrolytic cell, and a detection signal of the temperature sensor. A control device for controlling the pump is provided, and the temperature sensor detects that the temperature of the electrolytic cell has risen to a predetermined temperature or higher, and the control device controls the operation of the pump such as stop. This is a sterilizing water production device. Further, the control device may perform control such that an abnormality of the temperature of the electrolytic cell is displayed or a warning is given by a sound or the flow rate of the pump is adjusted to eliminate the abnormality of the electrolytic solution.

  Further, in the vicinity of the electrolytic cell, a main flow path through which water to be the sterilized water is obtained by diluting the electrolyzed hypochlorite obtained by electrolysis is provided, and between the electrolytic cell and the main flow path. Is provided with an electrolytic secondary sub-aqueous inflow channel for introducing the electrolytic secondary sub-aqueous water into the main channel, the main channel, upstream of the electrolytic secondary sub-aqueous inflow channel, a non-contact flow sensor is attached. There is.

  The apparatus for producing sterilized water according to the present invention has a low frequency of occurrence of defects and can efficiently produce sterilized water. In particular, a pump that sends an electrolyte by detecting an abnormality such as the flow rate of the electrolyte due to the temperature rise when the amount and concentration of the electrolyte in the electrolyte is abnormal Is to control. As a result, the flow sensor for sending the electrolytic solution to the electrolytic cell can be eliminated, and by omitting the electronic parts that come into contact with the electrolytic solution, it is possible to eliminate the trouble caused by the flow sensor. Moreover, when the rise in the temperature of the electrolytic cell is detected, the control device can automatically stop or adjust the pump for sending the electrolytic solution to eliminate the abnormality, and the management is easy.

It is the schematic of the manufacturing method by the manufacturing apparatus of the sterilized water of one Embodiment of this invention. It is a schematic diagram of a sterilizing water manufacturing device of one embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described. FIG. 1 shows a method of manufacturing sterilized water 10 according to an embodiment of the present invention. First, salt water 14 is dissolved in tap water 12 to make salt water 17. Then, salt water 17 and tap water 12 are mixed at a predetermined ratio to form an electrolytic solution 18, which is then placed in a diaphragmless electrolytic cell 42 for electrolysis. The electrolyzed hypochlorite 20 obtained by electrolysis is slightly acidic, and the slightly acid electrolyzed hypochlorite 20 is diluted with tap water 12 and the organic acid 22 is further added to form the sterilized water 10.

  FIG. 2 is a schematic diagram of the manufacturing apparatus 24 for the sterilized water 10 of this embodiment. The apparatus 24 for manufacturing the sterilizing water 10 has a main flow path 26 which is a pipe body for manufacturing the sterilizing water 10 therein. Then, in the main flow path 26, one end portion 26a is connected to a faucet of the water supply, and the opposite end portion 26b serves as a water discharge outlet for discharging the manufactured sterilizing water 10.

  A saturated salt water tank water passage 28 is branched near the tip portion 26a of the main flow passage 26, and a saturated salt water tank 30 is provided at the tip of the saturated salt water tank water passage 28. In the saturated salt water tank 30, tap water 12 and salt 14 are mixed to make saturated salt water 17. A salt water pump 32 is provided in the saturated salt water tank 30, and a mixing tank 34 is provided downstream of the salt water pump 32.

  A water tank water passage 36 branches off slightly downstream of the saturated salt water tank water passage 28 in the main flow passage 26, and a water tank 38 for storing tap water 12 is provided at the tip of the water tank water passage 36. A water pump 40 is provided in the water tank 38, and the downstream of the water pump 40 is connected to the mixing tank 34. In the mixing tank 34, the tap water 12 and the salt water 17 are mixed and adjusted to a predetermined concentration to form the electrolytic solution 18. An electrolysis tank 42 that electrolyzes the electrolytic solution 18 into electrolyzed secondary water 20 is provided downstream of the mixing tank 34.

  The electrolytic cell 42 is provided with a temperature sensor 44. If there is an abnormality in the amount or concentration of the electrolytic solution 18 in the electrolytic bath 42, the temperature of the electrolytic bath 42 rises, and the rise in temperature detects an abnormality in the flow rate of the electrolytic solution 18 or the like. The reason why the temperature of the electrolytic cell 42 rises is that the electrolytic solution 18 is not sent to the electrolytic cell 42, and the supply of the tap water 12 from the water pump 40 is stopped or the supply of the salt water 17 from the salt water pump 32 is performed. Has stopped. When the supply of the tap water 12 is stopped, the electrolytic solution 18 is not newly supplied to the electrolytic cell 42, but the current continues to flow and the temperature of the electrolytic solution 18 rises abnormally, so that the concentration of the electrolyzed secondary water 20 cannot be ensured. At the same time, it causes deterioration of the electrolytic cell 42. When the supply of the salt water 17 is stopped, the voltage of the power supply keeps increasing in order to maintain a constant current during electrolysis, which causes abnormal heat generation of the power supply, causing the power supply to go down. The concentration of water 20 cannot be guaranteed.

  A control device 46 to which a detection signal is sent from a temperature sensor 44 is connected to the salt water pump 32 and the water pump 40. The control device 46 detects that the temperature of the electrolytic solution 18 in the electrolytic bath 42 has risen to a predetermined temperature or higher, and performs control such as stopping the salt water pump 32 and the water pump 40. Further, the abnormality of the temperature of the electrolytic cell 42 may be displayed or warned by sound or the like, and the control device 46 may automatically adjust the flow rate to eliminate the abnormality.

  A downstream sub-water tank 48 for storing electrolyzed secondary water 20 obtained by electrolyzing the electrolytic solution 18 is provided downstream of the electrolytic cell 42. A secondary sub-water pump 50 is provided in the secondary sub-water tank 48, and an electrolytic secondary sub-water inflow channel 52 is connected to the secondary sub-water pump 50. The electrolytic sub-submerged inflow water channel 52 is connected to the main channel 26 downstream of the water tank channel 36, and the electrolytic sub-submerged water 20 is introduced into the main channel 26 and mixed with the tap water 12.

  An acid inflow water channel 54 is branched from the main flow path 26 downstream of the electrolyzed secondary water inflow water path 52, and an acid tank 58 is provided at the tip of the acid inflow water path 54 via an acid pump 56. The organic acid 22 is stored in the acid tank 58. The organic acid 22 is introduced into the main flow path 26 from the acid inflow water channel 54 and mixed with the tap water 12 and the electrolyzed secondary sub-water 20 to produce the sterilized water 10. The produced sterilizing water 10 is sent from the terminal end portion 26b and is stored in a product tank (not shown) or the like.

  A non-contact flow rate sensor 60 such as a clamp-on type digital flow rate sensor is attached to the main flow path 26 between the water tank water path 36 and the electrolytic secondary sub-aqueous water inflow water path 52. The non-contact flow rate sensor 60 is attached to the outer surface of the pipe body of the main flow path 26, does not directly contact the tap water 12 of the main flow path 26, avoids troubles caused by contact with the tap water 12, and prevents malfunctions. It is lost and maintenance-free. Even if there is a problem with the main body of the non-contact flow sensor 60, it can be dealt with in the minimum time on site.

  The method for manufacturing the sterilized water 10 and the manufacturing apparatus 24 of this embodiment utilize the fact that the temperature of the electrolytic cell 42 rises when there is an abnormality in the amount or concentration of the electrolytic solution 18 in the electrolytic cell 42. Based on the above, the control device 46 determines an abnormality such as a decrease in the flow rate of the electrolytic solution 18 or a change in the concentration. When the control device 46 determines that there is an abnormality, the salt water pump 32 that sends the salt water 17 that is the material of the electrolytic solution 18 or the water pump 40 that sends the tap water 12 mixed with the salt water 17 is stopped, and the temperature of the electrolytic cell 42 is abnormal. Is warned with a display or sound. Then, the abnormality may be promptly eliminated manually, or the salt water pump 32 or the water pump 40 may be automatically controlled to perform the treatment for eliminating the abnormality of the electrolytic solution 18.

  According to the manufacturing method and the manufacturing apparatus 24 of the sterilized water 10 of this embodiment, the electrolytic solution 18 is not in direct contact with the electronic components such as the flow rate sensor, and the frequency of occurrence of defects is low. 10 can be manufactured. When the temperature sensor 44 detects an increase in the temperature of the electrolytic cell 42, the controller 46 can automatically stop the salt water pump 32 and the water pump 40, or adjust the flow rate to eliminate the abnormality. Easy to manage. In particular, the electrolytic solution 18 flowing in the electrolytic bath 42 can be controlled without measuring the flow rate of the electrolytic solution 18 in the electrolytic bath 42, a flow sensor is not necessary, and the flow sensor is eliminated by eliminating the flow sensor. Problems can be eliminated. Further, since the tap water 12 that dilutes the electrolyzed sub-aqueous water 20 measures the flow rate with the non-contact flow sensor 60 attached to the outer surface of the main flow path 26, the tap water 12 does not touch the tap water 12 and the frequency of occurrence of malfunctions. Can be lowered. Even if a failure occurs in the non-contact flow rate sensor 60, it is not necessary to drain the tap water 12 in the main flow path 26, repair and replacement can be performed from the outside, and the work process is easy.

  The sterilizing water manufacturing method and manufacturing apparatus of the present invention are not limited to the above embodiment. The material of each component is not limited to the above-mentioned embodiment, and any material having the same function may be used. The water may be groundwater or the like other than tap water, and the electrolytic solution may be other than salt water. The type of organic acid can be freely changed.

10 Sterilized Water 12 Tap Water 14 Salt 17 Salt Water 18 Electrolyte 20 Electrolyte Sub-Aqueous Water 26 Main Flow Path 32 Salt Water Pump 40 Water Pump 42 Electrolyzer 44 Temperature Sensor 46 Control Device 52 Electrolytic Sub-Aqueous Water Inflow Channel 60 Non-contact Flow Rate Sensor

Claims (2)

An electrolytic bath that electrolyzes an electrolytic solution into electrolyzed hypochlorite, a pump that feeds the electrolytic solution to the electrolytic bath, a temperature sensor that detects the temperature of the electrolytic bath, and a pump that operates the pump according to a detection signal of the temperature sensor. A control device for controlling is provided,
The control device, when the temperature sensor detects that the temperature of the electrolytic cell has risen to a predetermined temperature or higher, without measuring the flow rate of the electrolytic solution of the electrolytic cell, the flow rate of the electrolytic solution by the pump Is controlled to eliminate abnormalities in the flow rate of the electrolytic solution.   In the vicinity of the electrolysis tank, a main flow path is provided in which water that is obtained by diluting the electrolyzed sub-aqueous solution obtained by electrolysis and sterilized water flows, and between the electrolysis tank and the main flow path is the An electrolytic sub-submerged water inflow channel for introducing electrolyzed sub-submerged water into the main flow channel is provided, and a non-contact flow sensor is attached to the main flow channel on the upstream side of the electrolytic sub-sub water inflow channel. Item 1. A sterilizing water production apparatus according to item 1.

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