JPH08323307A - Appliance washing device - Google Patents

Abstract

PURPOSE: To assure a sufficient washing capacity to stains of a fat and oil system and a protein system and sufficient sterilizing capacity by having an electrolytic cell and an electrolytic material adder to add an electrolytic material to fresh water and providing the device with a water generator capable of forming high-alkalinity water and strongly acidic water, etc. CONSTITUTION: Used appliances are stowed into an appliance stowage cage 5 and a washing tank 5 is hermetically sealed in order to wash the appliances with the appliance washing device A. A solenoid valve 1 is opened by a controller 39 and driving voltage and electrolytic voltage are supplied to the water generator 3. DC voltage is impressed to respective electrodes to operate the water generator 3 with a strongly alkaline water discharge mode. Further, the strongly alkaline water formed in the water generator 3 is supplied at a prescribed rate through a first formed water discharge pipe 13e to the washing tank 4. A pump 8 is thereafter driven by the controller 39 to admit the strongly alkaline water through a pipeline 7a, the pump 8 and a pipeline 7 to an injector 6 by which the water is injected diagonally upward from injection nozzles 6a. As a result, the stains sticking to the appliances are decomposed and washed away.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument cleaning device such as a clinical inspection instrument cleaning device, a medical instrument cleaning device, a dental instrument cleaning device, and a dishwashing device.

[0002]

2. Description of the Related Art The applicant of the present application filed in Japanese Utility Model Publication No.
No. 1 proposes a dishwasher that cleans dishes with alkaline water obtained by electrolyzing tap water, and then sterilizes the dishes with acid water obtained by electrolyzing tap water did.

[0003]

When the electrolytic solution is electrolyzed to produce alkaline water and acidic water, if the concentration of the electrolytic substance in the electrolytic solution is low, the electrolytic solution cannot be promoted to strongly decompose. It is not possible to obtain alkaline water and strongly acidic water. The dishwasher of Japanese Utility Model Publication No. 5-26051 produces alkaline water and acidic water by electrolysis of tap water, and cannot produce strong alkaline water and strong acidic water. Therefore, the dishwasher of Japanese Utility Model Laid-Open No. 5-26051 does not have sufficient cleaning ability for oil and fat-based and protein-based stains, and also does not have sufficient sterilization ability. The present invention has been made in view of the above problems, and an object of the present invention is to provide an instrument cleaning device having a sufficient cleaning ability for oil and fat-based and protein-based stains and a sufficient sterilization ability.

[0004]

In order to solve the above problems, in the present invention, a strong alkaline water is provided which has an electrolytic cell and an electrolytic substance addition device for adding an electrolytic substance to fresh water supplied to the electrolytic cell. A water creating device that can generate strongly acidic water, a wash tank that can be sealed, an injection device that injects the generated water of the water creating device into the cleaning tank, and the operation of the water creating device and the operation of the injection device are controlled. An apparatus for cleaning equipment is provided. Since the instrument cleaning device according to the present invention has the electrolytic bath and the electrolytic substance addition device for adding the electrolytic substance to the fresh water supplied to the electrolytic bath, the electrolytic substance concentration obtained by adding the electrolytic substance to the fresh water is high. The electrolytic solution can be electrolyzed to generate strongly alkaline water and strongly acidic water. Therefore, the instrument cleaning device according to the present invention has sufficient cleaning ability for oil and fat-based and protein-based stains and sufficient sterilization ability. still,
In the present specification, "clean water" means tap water, filtered water, water treated with an ion exchange resin (soft water,
Ion-exchanged water, pure water) and the like. Since the instrument cleaning device according to the present invention is provided with a sealable cleaning tank, contaminants such as bacteria adhering to the instrument, strong alkaline water, and strong acid water are prevented from scattering into the room, and are safe for the human body. is there. Since the instrument cleaning device according to the present invention includes the injection device that injects the generated water of the water creating device into the cleaning tank, the generated water of the water creating device is injected at high speed to the device placed in the cleaning tank, Equipment can be washed, sterilized and rinsed quickly. Since the instrument cleaning device according to the present invention includes the control device that controls the operation of the water creating device and the operation of the injection device, cleaning, sterilization, and rinsing of the device can be performed automatically and quickly.

In a preferred embodiment of the invention, the electrolytic cell is a diaphragmless electrolytic cell. When the electrolytic cell is a diaphragm-less electrolytic cell, the distance between the electrodes is shortened, the flow velocity of the electrolytic solution flowing through the flow path between the electrodes is increased, and hydroxide ions supplied to the electrode surface,
By increasing the amount of hydrogen ions and suppressing the increase of the voltage applied between the electrodes, the electrolysis of the electrolytic solution can be promoted. As a result, generation of strong alkaline water and strong acidic water is promoted, and strong acidic water having a low concentration of hypochlorous acid is obtained. By reducing the concentration of highly corrosive hypochlorous acid, corrosion of the equipment is suppressed. In a preferred embodiment of the present invention, the electrolytic substance is salt. When the electrolytic substance is salt, it is easy to purchase and replenish the electrolytic substance. In a preferred aspect of the present invention, the control device performs control to reverse the polarity of the DC voltage applied between the electrodes of the electrolytic cell. When control is performed to reverse the polarity of the DC voltage applied between the electrodes of the electrolytic bath, only one of the two outlets of the electrolytic bath is connected to the cleaning bath, and the cleaning bath is exposed to strong alkaline water. Can supply strong acidic water. As a result, the piping system of the instrument cleaning device is simplified.

[0006] In the present invention, a water creating device having a device for adding an alkaline substance to fresh water and a device for adding an acidic substance to fresh water, and a water creating device capable of generating strong alkaline water and strong acidic water, and a sealable washing Provided is a device cleaning device comprising: a tank, an injection device for injecting generated water of a water creation device into a cleaning tank, and a control device for controlling the operation of the water creation device and the operation of the injection device. . The water creating device having a device for adding an alkaline substance to fresh water and a device for adding an acidic substance to fresh water has a simpler structure than a water creating device having an electrolyzer, and reduces the manufacturing cost of the instrument cleaning device. .

In a preferred embodiment of the present invention, the water contact portion of the cleaning tank is made of a corrosion resistant material. When the water contact portion of the cleaning tank is made of a corrosion resistant material, corrosion of the cleaning tank due to strong acidic water or strong alkaline water is suppressed, and the life of the instrument cleaning device is extended. In a preferred aspect of the present invention, the injection device has an injection nozzle and a pressure device.
In a preferred aspect of the present invention, the injection device has a shower nozzle and a pressurizing device. In a preferred aspect of the present invention, the injection device has a centrifugal fan. The injection device is easily configured by an injection nozzle and a pressurizing device, or by a centrifugal fan. When the spray nozzle is a shower nozzle, the water generated by the water creating device can be dispersed and sprayed in a wide range, and the surface of the device can be uniformly cleaned, sterilized, and rinsed. In a preferred embodiment of the present invention, the instrument cleaning device has a heater that heats the water produced by the water creating device. When the instrument cleaning device includes a heater for heating the generated water of the water creating device, the cleaning ability and the drying ability of the instrument cleaning device are improved.

In a preferred embodiment of the present invention, the control device operates the water creating device to generate strongly alkaline water and strongly acidic water, and the strongly alkaline water is injected from the injector to be placed in the washing tank. The device is washed, strong acid water is jetted from the jetting device to sterilize the washed device, the operation of the water creating device is stopped, and fresh water is jetted from the jetting device to rinse the sterilized device. By automatically washing the equipment in the order of washing with strong alkaline water, sterilization with strong acid water, and rinsing with fresh water, a high washing effect, sterilizing effect and washing efficiency can be obtained. Rinsing with fresh water prevents equipment corrosion. The fresh water that has passed through the water creating device that has stopped operating may be jetted from the jetting device, or the fresh water that does not pass through the water creating device may be jetted from the jetting device. In a preferred embodiment of the present invention, the instrument cleaning device is provided with a blowing device for blowing air into the cleaning tank, and the control device operates the water creating device to generate strong alkaline water and strong acidic water, thereby generating strong alkaline water. Injects from the injection device to wash the equipment placed in the cleaning tank, sterilizes the washed equipment by injecting strongly acidic water from the injection device, stops the operation of the water creation device, and injects fresh water from the injection device The sterilized instrument is rinsed, and the rinsed instrument is dried by blowing air into the washing tank. By automatically washing and drying the instrument in the order of washing with strong alkaline water, sterilization with strong acidic water, rinsing with fresh water, and blast drying, all the washing steps including the drying step of the instrument are automated. As a result, the cleaning efficiency of the device is further improved.

In a preferred embodiment of the present invention, the instrument cleaning device is equipped with a reflux mechanism for collecting the strongly alkaline water, the strongly acidic water and the fresh water injected from the injection device and returning it to the injection device. Water and fresh water are circulated and used. When strong alkaline water, strong acid water, or fresh water is used in circulation, the water generating device can be stopped while the generated water in the water generating device is being circulated and used. Power is reduced and electrode life is extended. In a preferred aspect of the present invention, the control device is a control for supplying strong acidic water into the cleaning tank after cleaning the appliance and before sterilizing the appliance to replace the strong alkaline water remaining in the cleaning tank with the strong acidic water. I do. By replacing the strongly alkaline water remaining in the cleaning tank with the strongly acidic water, the effect of sterilization by the strongly acidic water in the next step is improved.

In a preferred embodiment of the present invention, the strongly alkaline water has a pH of 11 or higher, the strongly acidic water has a pH of about 3 to about 5.5 and contains hypochlorous acid at a concentration of about 20 ppm. When the pH of the strongly alkaline water is 11 or more, a sufficient cleaning effect can be obtained, and when the pH of the strongly acidic water is about 3 to about 5.5 and hypochlorous acid is contained at a concentration of about 20 ppm, it is sufficient. A sterilizing effect is obtained and corrosion of the equipment is prevented. In addition, "ppm" is the weight concentration in terms of chlorine atom, and the unit is "Clmg / liter". In a preferred embodiment of the present invention, the strongly alkaline water has a pH of 11
It is above, pH of strongly acidic water is 3 or less, 0.5p
It contains hypochlorous acid at a concentration of pm to 20 ppm. When the pH of the strongly alkaline water is 11 or more, a sufficient washing effect is obtained, and the pH of the strongly acidic water is 3 or less, 0.5 pp
When hypochlorous acid is contained at a concentration of m to 20 ppm, a sufficient bactericidal effect is obtained and corrosion of the equipment is prevented.

In a preferred aspect of the present invention, the water creating device is arranged on the way of the water supply pipe of the instrument cleaning device. By disposing the water creating device on the way of the water supply pipe of the instrument cleaning device, the instrument cleaning device is downsized. In a preferred aspect of the present invention, the instrument cleaning device includes a switching device that switches the supply destination of the generated water of the water creating device between the cleaning tank and the drain port. In the medical field, strong acid electrolyzed water may be used for assisting treatment of atopic dermatitis, cleaning and disinfecting the oral cavity. Even at home, strong acidic electrolyzed water may be used to help treat atopic dermatitis. When the equipment cleaning device is equipped with a switching device that switches the supply destination of the generated water of the water creation device between the cleaning tank and the drain port, the strongly acidic water generated by the water creation device is taken out from the drain port and the atopic dermatitis It can be used for treatment, cleaning of the oral cavity, and disinfection.

In the present invention, a dental instrument cleaning device provided with an instrument cleaning device is provided. It is recommended to clean and sterilize the used dental instruments with the patient's blood and body fluid automatically in a single device in order to prevent the workers involved in the cleaning of dental instruments from the risk of infection. desirable. By using the dental instrument cleaning device provided with the instrument cleaning device according to the present invention, it is possible to automatically clean and sterilize the dental instrument after use. According to the present invention, there is provided a dental instrument cleaning device cabinet having a dental instrument cleaning device incorporated therein. By storing the dental instrument cleaning device in a single cabinet and installing it next to the sink at the dental care site, the sink counter can be used more widely than when the dental instrument cleaning device is placed on the sink counter. .
According to the present invention, there is provided a dishwashing device including an instrument washing device. The dishwasher including the instrument cleaning device according to the present invention exhibits high cleaning ability, sterilizing ability, and high cleaning efficiency.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

1. Configuration and Operation of Instrument Cleaning Device An instrument cleaning device A according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8. As shown in FIG. 1, water faucet 1
00, through the solenoid valve 1 and the constant flow valve 2, the water creating device 3
Is connected. The water creating device 3 includes the first generated water discharge pipe 13
It is connected to the lower part of the cleaning tank 4 which can be sealed via e. The water contact portion of the cleaning tank 4 is made of a corrosion resistant material such as polypropylene. At the bottom of the cleaning tank 4, a water reservoir 4
a is formed. A strainer (not shown) is arranged in the water reservoir 4a. An instrument storage basket 5 is arranged in the cleaning tank 4. Below the device storage basket 5, an injector 6 having a plurality of injection nozzles 6a directed obliquely upward is arranged rotatably around a vertical axis. A pipe 7 a extending from the water reservoir 4 a of the cleaning tank 4 is connected to the pump 8. A conduit 7b extending from the pump 8 is connected to the injector 6. A pipe line 7 c that branches from the middle of the pipe line 7 a is connected to the pump 9. A conduit 7d extends from the pump 9. Second generated water discharge pipe 13 of water creation device 3
f merges with the pipe line 7d and becomes the pipe line 7e, which extends to the outside of the instrument cleaning device A. Below the cleaning tank 4, a water level sensor 10 and a heater 11 are arranged. Cleaning tank 4
Blower fan 12 is disposed adjacent to. The air discharge pipe 12 a of the blower fan 12 extends to the inside of the cleaning tank 4.

As shown in FIG. 2, the water creating device 3 includes a flow sensor 14 and a diaphragmless electrolytic cell 15 which are connected by a water pipe 13a. A filter 16 is arranged on the way of the water pipe 13a. A water supply pipe 13 b extending from the flow sensor 14 is connected to the constant flow valve 2.
The saline tank 17 and the pump 18 are connected by a water pipe 13c, and the pump 18 is a water pipe 13d and a water pipe 13d.
Through the check valve 19 disposed on the way to the water pipe 13
It is connected to a part upstream of the filter 16 of a. First produced water discharge pipe 1 extending from the diaphragmless electrolytic cell 15
3e is connected to the cleaning tank 4 via the flow control valve 20a. The second produced water discharge pipe 13f extending from the membraneless electrolytic cell 15 joins the pipe line 7d via the flow rate control valve 20b.

The structure of the diaphragmless electrolytic cell 15 will be described below. As shown in FIGS. 3 and 4, the diaphragmless electrolytic cell 15 includes a rectangular flat plate-shaped first electrode plate 22, a second electrode plate 23, and a third electrode plate 24 in the recess of the resin pressure-resistant case 21. A plurality of electrode plates are sequentially arranged while sandwiching a plurality of resin spacers 25, and a cover 26 is liquid-tightly screwed to the case 21. Terminals 22a, 23a, 24a are fixed to the electrode plates 22, 23, 24, respectively. The terminals 22a, 23a, 24a are used for the control unit 39 described later.
Is connected to a DC power supply device included in. The case 21 is provided with a saline inlet 27, a first produced water outlet 28, and a second produced water outlet 29. As shown in FIG. 6, the first water passage 30 is formed between the first electrode plate 22 and the second electrode plate 23, and the second water passage 30 is formed between the second electrode plate 23 and the third electrode plate 24.
A water passage 31 is formed. First electrode plate 22 and second
The distance to the electrode plate 23 and the distance to the second electrode plate 23 and the third electrode plate 24 are set to be sufficiently small. The first water passage 30 and the second water passage 31 are divided into a plurality of vertically adjacent sub water passages by a plurality of spacers 25 extending in the horizontal direction.

As shown in FIG. 5, the upstream ends of the first water passage 30 and the second water passage 31 communicate with the saline distribution passage 32. The saline distribution channel 32 includes a case 21 and a cover 26.
And is formed adjacent to the electrode plate over the entire vertical length of the electrode plate. Saline solution distribution channel 3
The capacity of 2 is set sufficiently larger than the capacities of the first water passage 30 and the second water passage 31. In order to enhance the structural continuity between the saline solution distribution flow path 32 and the first water flow path 30 and the second water flow path 31 in the communication part, the horizontal cross section of the saline solution distribution flow path 32 has a first cross section. Water passage 30, second
It is formed in a funnel shape that narrows toward the upstream end of the water passage 31. As shown in FIG. 4, the upstream end of the saline distribution channel 32 communicates with the saline inlet 27. Saline inlet 2
7 is connected to the water pipe 13a. As shown in FIGS. 5 and 6, the downstream ends of the first water flow passage 30 and the second water flow passage 31 communicate with the first produced water recovery flow passage 33. The first generated water recovery flow path 33 is formed by the case 21 and the cover 26, and extends adjacent to the electrode plate over the entire length in the vertical direction of the electrode plate. The capacity of the first produced water recovery passageway 33 is set to be sufficiently larger than the capacities of the first water passage passage 30 and the second water passage passage 31. As shown in FIGS. 4, 7, and 8, the downstream end of the first produced water recovery flow path 33 communicates with the first produced water outlet 28. The first produced water outlet 28 is connected to the first produced water discharge pipe 13e.

As shown in FIGS. 5 and 6, the case 21 is formed with a groove 34 extending adjacent to the first electrode plate 22 over the entire length of the first electrode plate 22 in the vertical direction, and the cover 26 is formed on the cover 26. A groove 35 extending adjacent to the third electrode plate 24 is formed over the entire length of the third electrode plate 24 in the vertical direction. The groove 34 cooperates with the first electrode plate 22 to form a second generated water recovery passage 36, and the groove 35 cooperates with the third electrode plate 24 to form a third generated water recovery passage 37. There is. As shown in FIGS. 4, 7, and 8,
The downstream portions of the second produced water recovery flow path 36 and the third produced water recovery flow path 37 extend into the case 21, and the downstream ends thereof communicate with the communication port 38 formed in the case 21, and the communication port 38 is the second generation. It communicates with the water discharge port 29. Second produced water outlet 2
9 is connected to the second produced water discharge pipe 13f. As shown in FIGS. 3 and 6, in the downstream region of the first water flow passage 30, a slit 22b extending vertically is formed in the first electrode plate 22. The first water passage 30 has a slit 22b.
Through the second produced water recovery flow path 36. As shown in FIGS. 3, 4 and 6, in the downstream region of the second water flow passage 31, the slit 24 extending vertically in the third electrode plate 24.
b is formed. The second water passage 31 has the slit 2
It communicates with the third produced water recovery flow path 37 via 4b.

As shown in FIG. 1, the instrument cleaning device comprises a control unit 39 having a variable power DC circuit including a switching power circuit and a programmed microcomputer for controlling the power circuit. A flow rate signal is input from the flow rate sensor 14 and a water level signal is input from the water level sensor 10 to the control unit 39. From the control unit 39, drive power is supplied to the solenoid valve 1, the pumps 8, 9, the heater 11, the blower fan 12, and the pump 18, and electrolysis power is supplied to the diaphragmless electrolytic cell 15.

The operation of the instrument cleaning device A having the above structure will be described below. Driving power is supplied from the control unit 39 to the solenoid valve 1. As shown by the white arrow in FIG. 2, tap water discharged from the faucet 100 flows into the water creating device 3 through the electromagnetic valve 1 and the constant flow valve 2. Flow sensor 1
The flow rate is detected by 4. A flow rate signal is output from the flow rate sensor 14 to the control unit 39. Salt water tank 1
The high-concentration saline solution stored in advance in 7 is mixed and diluted with the tap water flowing through the water pipe 13a through the pump 18 and the check valve 19. The diluted saline solution is used in filter 1
After debris is removed through 6 and flows into the diaphragmless electrolytic cell 15. The drive voltage of the pump 18 is controlled by the control unit 39 according to the flow rate of the tap water detected by the flow rate sensor 14, and consequently the flow rate of the tap water flowing through the water pipe 13a, and the high-concentration salt supplied to the water pipe 13a is controlled. The amount of water is controlled, and by extension, the salt concentration of saline flowing into the diaphragmless electrolytic cell 15 is controlled.

As shown by the arrows in FIGS. 4 and 5, the saline solution that has flowed into the saline solution inlet 27 of the diaphragmless electrolytic cell 15 flows into the saline solution distribution channel 32, and flows into the saline solution distribution channel 32. At the same time as flowing downward, it horizontally flows into the plurality of sub-flow passages of the first water passage 30 and the second water passage 31. Between the second electrode plate 23, the first electrode plate 22, and the third electrode plate 24,
A DC voltage is applied from a DC power supply device included in the control unit 39, and saline water flowing horizontally through the first water passage 30 and the second water passage 31 is electrolyzed. In the strong alkaline water discharge mode in which the strong alkaline water is discharged from the first generated water discharge pipe 13e, the first electrode plate 22 and the third electrode plate 24 are used.
And become the anode, and the second electrode plate 23 becomes the cathode,
A DC voltage is applied to the first electrode plate 22, the second electrode plate 23, and the third electrode plate 24. As a result, strong alkaline water is generated in the vicinity of the second electrode plate 23, and strong acidic water containing hypochlorous acid is generated in the vicinity of the first electrode plate 22 and the third electrode plate 24. In the strongly acidic water discharge mode in which strongly acidic water is discharged from the first produced water discharge pipe 13e, the first electrode plate 22 and the third electrode plate 24 serve as the cathode, and the second electrode plate 23 serves as the anode. A DC voltage is applied to the first electrode plate 22, the second electrode plate 23, and the third electrode plate 24. As a result, the second electrode plate 2
Strong acidic water containing hypochlorous acid is generated in the vicinity of 3,
Strong alkaline water is generated in the vicinity of the first electrode plate 22 and the third electrode plate 24. The control unit 39 allows the pump 18
Is controlled, the generated water discharge mode is selected, the electrolysis power is controlled, and the pH of the strongly alkaline water, the pH of the strongly acidic water, the hypochlorous acid concentration of the strongly acidic water, and the like are controlled.

In the instrument cleaning device A, since the saline solution having a higher electrolyte concentration than that of tap water is electrolyzed, the electrolytic solution is more electrolyzed than the dishwashing device of Ukaikaihei 5-26051 which electrolyzes tap water. The electrolysis of is promoted. As a result, in the instrument cleaning device A, it is possible to obtain strong alkaline water having a high cleaning ability and strong acidic water having a high sterilizing ability. Therefore, the instrument cleaning device A has sufficient cleaning ability for oil and fat-based and protein-based stains and sufficient sterilization ability. In the non-diaphragm type electrolytic cell 15 of the instrument cleaning device A,
Since the anode plates 22 and 24 and the cathode plate 23 face each other without a diaphragm, the distance between the electrodes is narrowed as compared with the diaphragm type electrolytic cell of the dishwasher of No. 526051.
First water passage 30 and second water passage 3 formed between electrodes
1 increases the flow rate of saline solution, increases the amount of hydroxide ions and hydrogen ions supplied to the electrode surface, and suppresses the increase of the voltage applied between the electrodes, while promoting the electrolysis of saline solution. can do. As a result, in the instrument cleaning device A, strong acidic water having a low hypochlorous acid concentration can be obtained. The reduced concentration of highly corrosive hypochlorous acid prevents corrosion of sterilized instruments.

In the non-diaphragm type electrolytic cell 15, the electrode interval is sufficiently narrow, and the capacity of the saline distribution channel 32 is sufficiently larger than the capacities of the first water passage 30 and the second water passage 31. Further, since the horizontal cross section of the saline distribution channel 32 is formed in a funnel shape that narrows toward the upstream ends of the first water passage 30 and the second water passage 31, the first water passage 30 and the second water passage 30 are formed.
The saline solution that has flowed into the water passage 31 immediately forms a laminar flow. Therefore, the generated water flowing along the first electrode plate 22 and the third electrode plate 24 does not mix with the flowing layer of the generated water flowing along the second electrode plate 23. As a result, the strongly alkaline water and the strongly acidic water can be taken out from the membraneless electrolytic cell 15. Since the water creation device 3 is disposed on the way of the water supply pipe of the instrument cleaning device A, the tap water supplied from the faucet 100 is temporarily stored in the water storage tank and then stored in the water creation device 3 from the water storage tank. Compared with the case of introducing water, the equipment cleaning device A
Has been miniaturized. In the instrument cleaning device A, since salt is used as the electrolytic substance, the purchase of the electrolytic substance,
Easy to replenish.

As shown in FIG. 6, the generated water generated in the vicinity of the second electrode plate 23 and flowing along the second electrode plate 23 flows from the downstream ends of the first water flow passage 30 and the second water flow passage 31. It flows into the first produced water recovery passageway 33. As shown in FIG.
The generated water that has flowed into the generated water recovery channel 33 flows downward, and then flows out of the diaphragmless electrolytic cell 15 via the first generated water outlet 28. The generated water that has flowed out of the diaphragmless electrolytic cell 15 is, as shown in FIG. 2, a flow control valve 20 a and a first generated water discharge pipe 13.
e and flow into the cleaning tank 4. The equipment stored in the cleaning tank 4 is cleaned by the generated water flowing into the cleaning tank 4. Since the water contact portion of the cleaning tank 4 is made of a corrosion-resistant material, corrosion of the cleaning tank 4 due to strongly acidic water is suppressed, and the life of the cleaning tank 4 and thus the instrument cleaning device A is extended.
As shown in FIG. 6, the generated water generated in the vicinity of the first electrode plate 22 and flowing along the first electrode plate 22 is the first water flow passage 3
In the downstream region of 0, it flows into the second produced water recovery passageway 36 through the slits 22b formed in the first electrode plate 22. The generated water that is generated in the vicinity of the third electrode plate 24 and flows along the third electrode plate 24 is in the downstream region of the second water passage 31 through the slits 24b formed in the second electrode plate 24, The produced water flows into the flow path 37. As shown in FIG. 4, the second produced water recovery passage 36 and the third produced water recovery passage 3
The generated water that has flowed into 7 flows downward and flows into the communication port 38, passes through the second generated water discharge port 29, and the diaphragmless electrolytic cell 1
Outflow from 5. As shown in FIGS. 1 and 2, the generated water flowing out from the diaphragmless electrolytic cell 15 is discharged to the second flow control valve 20b and the second
It passes through the generated water discharge pipe 13f to merge into the pipe 7d, and is discharged from the instrument cleaning device A through the pipe 7e.

The instrument cleaning by the instrument cleaning apparatus A is performed in the procedure shown in FIG. After used instruments such as clinical examination instruments, medical instruments, dental instruments and dishes are stored in the instrument storage basket 5 and the cleaning tank 5 is sealed, a power switch (not shown) is manually turned on. The instrument cleaning device A is in a start standby state. A start switch (not shown) is manually turned on. The instrument cleaning device A starts operating (S310 to S330).

The equipment is washed (S340).
The solenoid valve 1 is opened by the control device 39, and the water creating device 3
A driving voltage and electrolysis power are supplied to. The pump 18 is driven so that the first electrode plate 22 and the third electrode plate 24 serve as anodes, and the second electrode plate 23 serves as a cathode.
2, a DC voltage is applied to the second electrode plate 23 and the third electrode plate 24. The water creating device 3 starts to operate in the strongly alkaline water discharge mode. The operation of the pump 18 is controlled based on the flow rate signal from the flow rate sensor 14, the salt concentration of the saline solution supplied to the diaphragmless electrolytic cell 15 is controlled, and by extension, the strong alkaline water generated by the water creating device 3 is controlled. PH is controlled. The strong alkaline water generated by the water creating device 3 is supplied to the cleaning tank 4 by a predetermined amount through the first generated water discharge pipe 13e (S341). The water level sensor 10 detects that the supply amount of the strongly alkaline water has reached a predetermined value. The solenoid valve 1 is closed, the operation of the water creating device 3 is stopped, and the supply of strong alkaline water is stopped. The strong alkaline water accumulates in the water reservoir 4 a of the cleaning tank 4. The controller 8 drives the pump 8 so that the strongly alkaline water flows into the injector 6 through the pipe 7a, the pump 8 and the pipe 7b, and the injection nozzle 6
It is jetted obliquely upward through a. The strongly alkaline water droplets sprayed obliquely upward collide with the device stored in the device storage basket 5, decompose the starch-based, oil-based, and protein-based stains attached to the device, and wash it away. The equipment is washed (S342). The equipment is washed in the sealable cleaning tank 4, and the contaminants such as bacteria attached to the equipment and the strong alkaline water are prevented from scattering into the room, so that the safety to the human body is ensured. The strong alkaline water droplets jetted from the jet nozzle 6a collide with the dirt substance adhering to the device at high speed, and the device is quickly and efficiently washed. When the strong alkaline water is jetted obliquely upward through the jet nozzle 6a, the jet body 6 rotates around the vertical axis, and the instruments stored in the instrument storage basket 5 are uniformly washed.
After the strong alkaline water collides with the device, the water reservoir 4
After being collected in a and passing through a strainer (not shown) to remove solids, it is circulated through the pipe 7a, the pump 8, the pipe 7b, the injector 6 and the injection nozzle 6a. While the strongly alkaline water is being circulated, the operation of the water creating device 3 is stopped and the power consumption is saved. After the cleaning is completed, the pump 8 is stopped and the pump 9 is driven. The polluted waste liquid is discharged through the pipe 7c, the pump 9, and the pipes 7d and 7e (S343). After discharging the waste liquid, the pump 9 is stopped.

The strongly alkaline water remaining in the water reservoir 4a of the cleaning tank 4 is replaced with the strongly acidic water (S350). The solenoid valve 1 is opened by the control device 39, and drive power and electrolysis power are supplied to the water creating device 3. The pump 18 is driven, the first electrode plate 22 and the third electrode plate 24 become cathodes,
The first electrode plate 22, so that the second electrode plate 23 serves as an anode,
A DC voltage is applied to the second electrode plate 23 and the third electrode plate 24. The water creating device 3 starts to operate in the strongly acidic water discharge mode. The strongly acidic water generated by the water creating device 3 is supplied to the cleaning tank 4 through the first generated water discharge pipe 13e (S35).
1). When a predetermined time has elapsed after the start of the supply of the strongly acidic water, the solenoid valve 1 is closed, the operation of the water creating device 3 is stopped, and the supply of the strongly acidic water is stopped. The strongly acidic water accumulates in the water reservoir 4a of the cleaning tank 4. The pump 9 is driven and the strongly acidic water is discharged via the pipe 7c, the pump 9, and the pipes 7d and 7e (S352). After discharging the strongly acidic water, the pump 9 is stopped. By supplying and discharging the strongly acidic water, the strongly alkaline water remaining in the water reservoir 4a of the cleaning tank 4 is replaced with the strongly acidic water. This improves the effect of sterilization with strongly acidic water in the next step.

The instrument is sterilized (S360).
The solenoid valve 1 is opened by the control device 39, and the water creating device 3
Driving power and electrolysis power are supplied to. The pump 18 is driven so that the first electrode plate 22 and the third electrode plate 24 become cathodes, and the second electrode plate 23 becomes anodes.
2, a DC voltage is applied to the second electrode plate 23 and the third electrode plate 24. The water creating device 3 starts to operate in the strongly acidic water discharge mode. The operation of the pump 18 is controlled on the basis of the flow rate signal from the flow rate sensor 14, the salt concentration of the saline solution supplied to the diaphragmless electrolytic cell 15 is controlled, and the strong acid water generated by the water creating device 3 is controlled. And the concentration of hypochlorous acid are controlled. The strongly acidic water generated by the water creating device 3 is the first
A predetermined amount is supplied to the cleaning tank 4 through the generated water discharge pipe 13e (S361). The water level sensor 10 detects that the supply amount of strongly acidic water has reached a predetermined value. The solenoid valve 1 is closed, the operation of the water creating device 3 is stopped, and the supply of strongly acidic water is stopped. Strongly acidic water is stored in the water tank 4a of the cleaning tank 4.
Accumulate in. The pump 8 is driven by the control device 39, the strongly acidic water flows into the injector 6 through the pipe 7a, the pump 8 and the pipe 7b, and is jetted obliquely upward through the jet nozzle 6a. The strongly acidic water droplets jetted obliquely upward collide with the instrument stored in the instrument storage basket 5, kill bacteria attached to the instrument, wash it away, and sterilize the instrument (S36).
2). The sterilization of the equipment is performed in the cleaning tank 4 which can be closed,
Since the highly acidic water is prevented from splashing into the room, safety for the human body is secured. The droplets of the strongly acidic water ejected from the ejection nozzle 6a collide with the bacteria and the like adhering to the instrument at high speed, and the instrument is quickly and efficiently sterilized. When the strongly acidic water is jetted obliquely upward through the jet nozzle 6a, the jet body 6 rotates around the vertical axis and the instrument storage basket 5
The instruments stored inside are uniformly sterilized. After the strong acid water collides with the device, the strong acid water is accumulated again in the water reservoir 4a, and the solid matter is removed through a strainer (not shown).
It is circulated and used via a, the pump 8, the pipe line 7b, the injector 6, and the injection nozzle 6a. While the strongly acidic water is circulated and used, the operation of the water creating device 3 is stopped, and power consumption is saved. After the sterilization is completed, the pump 8 is stopped and the pump 9 is driven. The polluted waste liquid is discharged via the pipe 7c, the pump 9, and the pipes 7d and 7e (S363). After discharging the waste liquid, the pump 9 is stopped.

The equipment is rinsed (S370).
The solenoid valve 1 is opened by the control device 39, and the water creating device 3
Operation continues to be stopped. A predetermined amount of tap water that has passed through the water creating device 3 is supplied to the cleaning tank 4 through the first produced water discharge pipe 13e (S371). The water level sensor 10 detects that the supply amount of tap water has reached a predetermined value.
The solenoid valve 1 is closed and the supply of tap water is stopped. Tap water accumulates in the water reservoir 4a of the cleaning tank 4. Control device 39
The pump 8 is driven by the tap water, and tap water flows into the injector 6 through the pipe 7a, the pump 8 and the pipe 7b.
It is jetted obliquely upward through a. The tap water droplets sprayed obliquely upward collide with the equipment stored in the equipment storage basket 5, and wash away corrosive substances such as strongly acidic water, chlorine ions, hypochlorous acid, etc. adhering to the equipment. , Rinse equipment (S37
2). As a result, corrosion of the instrument is prevented. The equipment is rinsed in the sealable washing tank 4 and the water containing corrosive substances is prevented from being scattered into the room, so that the safety for the human body is secured. The droplets of tap water sprayed from the spray nozzle 6a collide with the corrosive substance adhering to the device at high speed, and the device is rinsed quickly and efficiently. By the reaction when tap water is jetted obliquely upward through the jet nozzle 6a,
The injector 6 rotates about the vertical axis, and the instruments stored in the instrument storage basket 5 are rinsed evenly. After the tap water collides with the device, it collects again in the water reservoir 4a, and after the solid matter is removed through a strainer (not shown), the pipe line 7a, the pump 8,
It is circulated and used via the pipe line 7b, the injection body 6, and the injection nozzle 6a. After the rinsing is completed, the pump 8 is stopped and the pump 9
Is driven. The polluted waste liquid is discharged from the pipeline 7c, the pump 9,
It is discharged via the conduits 7d and 7e (S373). After discharging the waste liquid, the pump 9 is stopped.

The equipment is heated and rinsed (S38).
0). The solenoid valve 1 is opened by the control device 39, and the operation of the water creating device 3 is continuously stopped. A predetermined amount of tap water that has passed through the water creating device 3 is supplied to the cleaning tank 4 through the first produced water discharge pipe 13e (S381). The water level sensor 10 detects that the supply amount of tap water has reached a predetermined value. The solenoid valve 1 is closed and the supply of tap water is stopped. Tap water accumulates in the water reservoir 4a of the cleaning tank 4. The controller 11 drives the heater 11 to heat the tap water accumulated in the water reservoir 4a to 60 ° C to 80 ° C. The pump 8 is driven by the control device 39, and the temperature is 60 to 80 ° C.
Hot water flows into the injector 6 through the pipe 7a, the pump 8 and the pipe 7b, and is jetted obliquely upward through the jet nozzle 6a. The droplets of warm water jetted obliquely upward collide with the device stored in the device storage basket 5, washing away the strongly acidic water, chlorine ions, hypochlorous acid, and other corrosive substances attached to the device, Rinse the equipment and raise the temperature of the equipment (S3
82). The equipment is rinsed in the sealable washing tank 4 and the water containing corrosive substances is prevented from being scattered into the room, so that the safety for the human body is secured. Injection nozzle 6a
The droplets of warm water jetted from the collide with the corrosive substance adhering to the equipment at a high speed, so that the equipment can be rinsed quickly and efficiently. When the hot water is jetted obliquely upward through the jet nozzle 6a, the jet body 6 rotates around the vertical axis, and the instruments stored in the instrument storage basket 5 are evenly rinsed. Rinsing with warm water raises the temperature of the device, promotes drying of the device, and suppresses corrosion of the device caused by residual moisture on the surface of the device. After the hot water collides with the device, it collects again in the water reservoir 4a, and after the solid matter is removed through a strainer (not shown), the pipe line 7a, the pump 8, the pipe line 7b, the injector 6, the injection nozzle 6a. Used in circulation via. After the rinsing is completed, the pump 8 is stopped and the pump 9 is driven. The polluted waste liquid is discharged through the pipe 7c, the pump 9, and the pipes 7d and 7e (S383). After discharging the waste liquid, the pump 9 is stopped.

Blower drying of the equipment is performed (S39
0). The blower fan 12 is driven by the control device 39. Dry air is supplied to the cleaning tank 4 through the air discharge pipe 12a. The dry air promotes drying of the device and inhibits corrosion of the device caused by residual moisture on the surface of the device.

As can be seen from the above description, in the instrument cleaning device A, the control unit 39 controls the operation of the water creating device 3, the operation of the injection device (pump 8), and the operation of the blower fan 12 to control the operation of the device. All steps of washing, sterilization, rinsing and drying are fully automatic and quick. Since the control device 39 controls to reverse the polarity of the DC voltage applied between the electrode plates of the diaphragmless electrolytic cell 15, one of the two produced water outlets 28, 29 of the diaphragmless electrolytic vessel 15 is controlled. It is possible to supply strong alkaline water and strong acidic water to the cleaning tank 4 by connecting only No. 28 of the cleaning tank 4 to the cleaning tank 4. As a result, when the polarity of the DC voltage is not reversed and both the generated water outlets 28 and 29 are connected to the cleaning tank 4 and the electromagnetic valve is opened / closed to supply strong alkaline water and strong acidic water to the cleaning tank 4. Compared to
The piping system of the instrument cleaning device A is simplified. By performing the control of reversing the polarity of the DC voltage, the reverse electrolysis step for cleaning the diaphragmless electrolytic cell 15 becomes unnecessary. By automatically washing the equipment in the order of washing with strong alkaline water, sterilization with strong acid water, and rinsing with fresh water, a high washing effect, sterilizing effect and washing efficiency can be obtained. If the sterilization with strongly acidic water is performed before the washing with strongly alkaline water, the protein attached to the device is brought into contact with the strongly acidic water and coagulates, so that a sufficient sterilizing effect and cleaning effect cannot be obtained.

The instrument cleaning device A can be used as a clinical examination instrument cleaning device, a medical instrument cleaning device, a dental instrument cleaning device, a dish cleaning device, and the like. The clinical test instruments after use that have blood and body fluids to be inspected, as well as the medical instruments and dental instruments after use that have blood and body fluids of patients have been infected by the workers who process these instruments after use. It is desirable to automatically clean and sterilize in a single device from the viewpoint of preventing the risk of damage. By using the instrument cleaning device A as a clinical inspection instrument cleaning device, a medical instrument cleaning device, and a dental instrument cleaning device, it is possible to automatically clean and sterilize the clinical inspection instrument, the medical instrument, and the dental instrument after use.

2. Strong Alkaline Water, Strong Acidic Water Generation Confirmation Experiment (1) Experiment 1 Using the water creating device 3, three kinds of salt solutions having different salt concentrations were supplied to the diaphragmless electrolytic cell 15, and electrolysis power was changed variously. Experiments to confirm the formation of strongly alkaline water and strongly acidic water were conducted. Experimental conditions Electrode dimensions: Width (excluding the contact area with the spacer) x length: 1
00 mm x 60 mm Electrode material: JIS class 2 pure titanium + platinum plating Electrode spacing: 0.5 mm Electrolytic power: 10 W to 110 W Total flow rate, saline concentration: 4 liters / minute, 200 pp
m 3 liter / min, 323 ppm 2 liter / min, 513 ppm Amount of strongly alkaline water produced / amount of strongly acidic water produced: 2/3 Experimental results Experimental results are shown in FIG. As can be seen from FIG. 10, when the electrolysis power exceeds 20 W, strong alkaline water having a pH of 11 or more is produced. Also, the electrolysis power is 60
It can be seen that when W is exceeded, strongly acidic water with a pH of about 3 is produced. According to the above experiment, the saline solution was used in the diaphragm-free electrolytic cell 1
It was confirmed that strong alkaline water and strongly acidic water can be generated by electrolyzing with 5. (2) Experiment 2 Using the water creating device 3, various alkaline electrode water, a distance between the electrode plates, a salt solution concentration, and an electrolysis power were changed and a strong alkaline water and strongly acidic water production confirmation experiment was conducted. Experimental conditions and experimental results are shown in Tables 1 to 4. The following can be seen from Tables 1 to 4.

[0034]

[Table 1]

[0035]

[0036]

[Table 2]

[0037]

[0038]

[Table 3]

[0039]

[0040]

[Table 4]

When the electrolysis power changes, there is a pH limit. The pH limit value is greatly affected by the salt concentration. The hypochlorous acid concentration increases with increasing electrolysis power. When the salt concentration increases, the pH of the strongly alkaline water increases, the pH of the strongly acidic water decreases, and the hypochlorous acid concentration of the strongly acidic water increases. As the distance between the electrode plates increases, the concentration of hypochlorous acid in strongly acidic water increases. As the electrode area increases, the hypochlorous acid concentration of strongly acidic water decreases. By controlling the electrolysis conditions, the pH of the strongly alkaline water, the pH of the strongly acidic water, and the hypochlorous acid concentration of the strongly acidic water can be controlled. By optimizing the electrolysis conditions, strong alkaline water and strong acidic water can be generated while suppressing an increase in electrolysis power and suppressing generation of hypochlorous acid. If the electrolysis conditions are not optimized, a large amount of electrolysis power is required to generate strongly alkaline water and strongly acidic water, and the amount of hypochlorous acid generated increases.

3. Detergency Confirmation Experiment 1 of Strong Alkaline Water Obtained by electrolyzing saline solution using a diaphragmless electrolytic cell 15 in a commercially available dishwasher containing tile pieces with stains of starch, protein and oil and fat. Alkaline water and a dishwashing detergent were supplied, and a comparative test of detergency was conducted. Table 5 shows the experimental conditions and the experimental results.

[0043]

[Table 5]

The following can be seen from Table 5. (1) Strong alkaline water with a pH of 11 or above will cause starch stains,
It has high detergency against both protein stains and oil stains. (2) By heating the strongly alkaline water, the cleaning power of the strongly alkaline water can be improved.

4. Experiment for confirming detergency of strong alkaline water 2. Dental instruments with blood adhered to saline solution without diaphragm 1
It was washed with alkaline water obtained by electrolysis using No. 5, and the washing power of the alkaline water was confirmed. (1) Object to be cleaned The basic dental instrument set consisting of the probe, cement filler, extractor, tweezers, and scaler was the object to be cleaned. Bovine blood was adhered to the above basic equipment set. (2) Washing conditions A dishwasher marketed for household use was used. The object to be washed was placed in the dishwasher and alkaline water was supplied to the dishwasher to wash the object to be washed. Cleaning time is 5
Minutes (3) Method of evaluating cleaning effect After completion of cleaning, the presence or absence of blood remaining in the object to be cleaned was visually observed. (4) Experimental results Table 6 shows the experimental results.

[0046]

[Table 6]

From Table 6, it can be seen that strongly alkaline water having a pH of 11 or more has a high cleaning effect on blood stains.

5. Experiment 1 for confirming cleaning and sterilizing effect of electrolyzed water Alkaline water obtained by electrolyzing saline and a dental instrument on which bacteria are adhered with saline solution using a diaphragm-less electrolytic cell 15,
After washing with acidic water, the washing and sterilizing effect of electrolytic water was confirmed. (1) Object to be cleaned The basic dental instrument set consisting of the probe, cement filler, extractor, tweezers, and scaler was the object to be cleaned. A 0.1 wt% aspartic acid solution was applied to the above basic equipment set and dried. 10 basic equipment after drying
^It was immersed in a bacterial solution containing ⁴ cells / ml of Staphylococcus aureus for 15 minutes and dried. Bovine blood was attached to the dried basic equipment. (2) Washing conditions A dishwasher marketed for household use was used. The object to be washed was placed in the dishwasher, and electrolytic water was supplied to the dishwasher to wash the object to be washed. The washing time with acidic water was 1 minute, and the washing time with alkaline water was 5 minutes. (3) Evaluation method of cleaning and sterilizing effect Evaluation of cleaning effect: After completion of cleaning, the presence or absence of blood remaining in the object to be cleaned was visually observed. Evaluation of bactericidal effect: The object to be washed after washing was immersed in a broth liquid medium and cultured at 37 ° C for 48 hours, and then the presence or absence of residual bacteria was determined by the presence or absence of cloudiness of the broth liquid medium to determine the bactericidal effect. (4) Experimental results Table 7 shows the experimental results.

[0049]

[Table 7]

The following can be seen from Table 7. Stain of blood is sufficiently removed by strong alkaline water of pH 11.5. However, bacteria do not die. The bacteria are killed by strongly acidic water of pH 2.5. However, blood stains coagulate and are not sufficiently removed. The cleaning effect of pH 9.0 alkaline water is pH 1
It is inferior to the cleaning effect of strong alkaline water of 1.5. The sterilizing effect of acidic water of pH 5.5 is inferior to that of strongly acidic water of pH 2.5. After sterilizing with strong acid water and washing with strong alkaline water,
Blood stains are not fully removed and bacteria are not killed. After washing with strong alkaline water and sterilizing with strong acidic water,
Blood stains are thoroughly removed and bacteria are killed.

6. Experiment 2 for confirming the effect of washing and sterilizing electrolyzed water For dental instruments to which bacteria have adhered, saline solution is used in the diaphragm-free electrolytic cell 1
It was washed with electrolyzed water obtained by electrolysis using No. 5, and the sterilizing effect of strongly acidic electrolyzed water was confirmed. (1) Object to be cleaned A basic dental instrument set consisting of a probe, a filler, an extractor, tweezers, and a scaler was used as an object to be cleaned. A 0.1 wt% aspartic acid solution was applied to the above basic equipment set and dried. 10 ⁴ pieces / m of basic equipment after drying
It was immersed in a bacterial solution containing 1 staphylococcus aureus for 15 minutes and dried. (2) Washing conditions A dishwasher marketed for household use was used. The object to be washed was placed in the dishwasher, and electrolytic water was supplied to the dishwasher to wash the object to be washed. The cleaning time was 1 minute. (3) Evaluation method of bactericidal effect The object to be washed after washing is immersed in a broth liquid medium and
After culturing at ℃ for 48 hours, the presence or absence of residual bacteria was determined by the presence or absence of white turbidity in the broth liquid medium to determine the bactericidal effect. (4) Experimental results Table 8 shows the experimental results.

[0052]

[Table 8]

The following can be seen from Table 8. PH of acidic water is 3 to 5.5, about 20ppm
When hypochlorous acid is contained at a concentration of 10%, a sufficient bactericidal effect is obtained, and the dental instrument does not corrode. PH of acidic water is 3 or less, 0.5 ppm to 2
When hypochlorous acid is contained at a concentration of 0 ppm, a sufficient bactericidal effect is obtained, and the dental instrument does not corrode. If the hypochlorous acid concentration of the acidic water is 50 ppm, the dental instruments will corrode.

7. Experiment for confirming the cleaning and sterilizing effect of the instrument cleaning device A The dental instrument having blood and bacteria adhered thereto was washed and sterilized by using the instrument cleaning device A, and the cleaning and sterilizing effect of the instrument cleaning device A was confirmed. (1) Objects to be cleaned 16 sets of basic dental instruments including a probe, a cement filler, an extractor, tweezers, and a scaler were prepared as objects to be cleaned. 0.1 to the above basic equipment set
A wt% aspartic acid solution was applied and dried. The basic device after drying was dipped in a bacterial solution containing 10 ⁴ / ml Staphylococcus aureus for 15 minutes and dried. Bovine blood was attached to the dried basic equipment. (2) Evaluation method of cleaning and sterilizing effect Evaluation of cleaning effect: After the completion of cleaning, the presence or absence of blood remaining in the object to be cleaned was visually observed. Evaluation of bactericidal effect: The object to be washed after washing was immersed in a broth liquid medium and cultured at 37 ° C. for 48 hours, and then the bactericidal effect was judged by the presence or absence of cloudiness of the broth liquid medium. (3) Washing procedure Washing Water supply: Supply approximately 2 liters of strong alkaline water. Wash: Wash for 5 minutes. Drainage: Drain for 45 seconds. Replacement Water supply: Supply strong acidic water for 1 minute. Drainage: Drain for 45 seconds. Sterilization Water supply: Supply approximately 2 liters of strongly acidic water. Wash: Wash for 1 minute. Drainage: Drain for 30 seconds. Rinse Water supply: Supply about 2 liters of tap water. Wash: Wash for 20 seconds. Drainage: Drain for 30 seconds. Heat rinsing Water supply: Supply about 2 liters of tap water. Washing: Heat washing for 10 minutes. Drainage: Drain for 45 seconds. Blast drying Blast: Blow for 25 minutes to dry. (4) Electrolysis conditions Electrode dimensions: Width (excluding the part that contacts the spacer) x Length = 100 mm x 60 mm Electrode material: JIS Class 2 pure titanium plated with platinum Electrode spacing: 0.5 mm Electrolytic power: 50 W Water used : Chigasaki city tap water has a salt concentration of 1000 pp
Flow rate: Acidic water / Alkaline water = 1 liter / min / 1 liter / min (5) Inner dimensions of cleaning tank Width x height x depth = 442 mm x 391 mm x 230 m
m (6) Experimental result No residual blood was observed. No turbid bouillon was observed and no bacteria remained.

Although the embodiment of the instrument cleaning apparatus according to the present invention has been described above, the present invention is not limited to the above embodiment. FIG.
In the embodiment, the spray nozzle 6a may be a shower nozzle, and the droplets of the generated water may be dispersed and sprayed in a wide range. According to such a configuration, the surface of the device on which the dirt is attached can be uniformly washed. Alternatively, the device storage basket 5 may be rotated around the vertical axis, the injection nozzle 6a may be disposed on the side of the device storage basket 5, and the generated water may be sprayed toward the rotating device storage basket 5. The equipment storage basket 5 is rotated around a vertical axis, a centrifugal fan is disposed adjacent to the cleaning tank 4, and the generated water is supplied from the pump 8 to the centrifugal fan, and the generated water droplets are discharged from the centrifugal fan. May be sprayed toward the rotating instrument storage basket 5 through the opening formed in the side wall of the cleaning tank 4. The cleaning liquid may be stored in the cleaning tank 4, the generated water accumulated in the cleaning tank 4 may be caused to flow, and the instrument may be immersed in the flowing generated water. The cleaning tank 4 may be an ultrasonic cleaning device including an ultrasonic generator. In this case, the cavitation effect of ultrasonic waves improves the cleaning ability of the instrument cleaning device.

As shown by the chain double-dashed line in FIG. 1, a three-way valve 40 is provided on the way of the first produced water discharge pipe 13e, and a three-way valve 4 is provided.
The branch pipe 41 may be extended from 0, and the end portion of the branch pipe 41 may be guided to the outside of the instrument cleaning device A. In the medical field, strong acidic electrolyzed water may be used for assisting treatment of atopic dermatitis, cleaning and disinfecting the oral cavity. Even at home, strong acidic electrolyzed water may be used to help treat atopic dermatitis. The device cleaning device A switches the supply destination of the generated water of the water creating device 3 between the cleaning tank 4 and the branch pipe 41.
When 0 is provided, the strongly acidic electrolyzed water generated by the water creating device 3 can be taken out from the end of the branch pipe 41, that is, the drainage port, and used for treatment of atopic dermatitis, cleaning of the oral cavity, disinfection, and the like. . The flow control valve 20b may be closed when rinsing the sterilized instrument with tap water that has passed through the water creating device 3. The amount of tap water supplied to the cleaning tank 4 is increased, and the time required for rinsing is shortened. A three-way valve is disposed on the way of the water supply pipe 13b, a branch pipe is extended from the three-way valve, the branch pipe is connected to the cleaning tank 4, and at the time of rinsing, without going through the water creating device 3, Tap water may be supplied to the cleaning tank 4 from the branch pipe.

As shown in FIG. 11, the first produced water discharge pipe 13e extending from the water creating device 3 is connected to the first produced water tank 50, and the second produced water discharge pipe 13f is connected to the second produced water tank 51.
52a connected to the first produced water tank 50 and extending from the first produced water tank 50
And a pipe line 52b extending from the second produced water tank 51,
The three-way valve 53 may be connected to the conduit 54 connected to the cleaning tank 4. By controlling the three-way valve 53 by the control device 39, it is possible to supply strong alkaline water and strong acidic water to the cleaning tank 4 without reversing the polarity of the DC voltage applied to the electrodes of the diaphragmless electrolytic tank 15. .

By incorporating a heater in the blower fan 12 and blowing warm air into the cleaning tank 4, it is possible to shorten the drying time of the instrument after the completion of cleaning and sterilization. By incorporating a heater in the blower fan 12 and blowing warm air of 121 ° C. or higher into the cleaning tank 4, it is possible to shorten the drying time of the instrument after the completion of cleaning and sterilization and to sterilize the instrument by dry sterilization. The airtightness and pressure resistance of the cleaning tank 4 are increased, and the heater 11 is controlled so that the atmosphere inside the cleaning tank 4 has a differential pressure of 1 kg / cm ² and a temperature of 120 ° C.
Depending on the degree, high-pressure steam sterilization becomes possible. That is, the instrument cleaning device A can have the function of an autoclave.

The control of the operation of the water creating device 3 may be performed by a control device provided in the water creating device 3 and different from the control device 39. In this case, the water creating device 3 and the cleaning tank 4 can be separated from each other, and the independent water creating device 3 can be connected to an existing cleaning device to configure an instrument cleaning device. In the instrument cleaning device A of FIG. 1, a diaphragm type electrolytic cell may be used instead of the diaphragmless type electrolytic cell 15.

In the instrument cleaning device A of FIG. 1, instead of the water creating device 3, caustic soda (NaOH), sodium carbonate (Na ₂ C)
O ₃ ) and other chemicals containing alkaline substances as main components to tap water, and sodium hypochlorite (NaClO) and hydrochloric acid (Hc
Strong alkaline water and acidic water may be generated using a water creating device having a device for adding a drug containing l) as a main component to tap water. A device for adding chemicals mainly composed of alkaline substances to tap water, sodium hypochlorite (NaClO) and hydrochloric acid (Hc
The water-generating device having a device for adding a drug containing l) as a main component to tap water is a water-generating device 3 having a diaphragmless electrolytic cell 15.
The structure is simpler than that of, and the manufacturing cost of the instrument cleaning device A is reduced.

In step S342 of the equipment cleaning procedure of FIG. 9, the heater 11 may be operated to heat the strong alkaline water, and the equipment may be cleaned using the high temperature strong alkaline water. By heating the strongly alkaline water, the cleaning ability of the strongly alkaline water is increased.

8. Dental instrument cleaning device cabinet incorporating the instrument cleaning device A A dental instrument cleaning device cabinet incorporating the instrument cleaning device A that can be installed in a small space beside a sink in a dental care site so as not to interfere with work on the sink B will be described. As shown in FIG. 12, a dental instrument cleaning apparatus cabinet B is installed beside the sink 200 of the sink at the dental care site. In cabinet B, instrument cleaning device A
Cleaning device 60 including the water creating device 3 and the cleaning tank 4 of the device cleaning device A, the device storage basket 5, the injector 6, the pump 8, the water level sensor 10, the heater 11 and the like.
And are stored. The cabinet B also stores other components of the instrument cleaning device A. Cabinet B
Further, a towel holder 61, a storage basket 62, and a drawer-type storage shelf 63 are incorporated in the. The cabinet B has a water supply hose 202 extending from the faucet 201, and a water discharge hose 2 for sending the electrolyzed water generated by the water creating device 3 to the faucet 201.
03, the drain hose 204 for discharging the waste liquid flowing through the pipe line 7e of the instrument cleaning device A to the sink 200 is connected.
A caster (not shown) is attached to the cabinet B. Therefore, the cabinet B is movable.

As shown in FIG. 13, in the lower part of the cleaning device 60, the operating modes of the cleaning device 60 (cleaning mode, sterilization mode, rinsing mode, blast drying mode, automatic mode for automatically performing cleaning to blast drying, etc.) ) Operation mode selection switch and LE that displays the selected operation mode
A display panel 64 having a D display device and an LED display device for displaying the operation mode currently being performed is provided. The cleaning device 60 is mounted on a shelf plate 65 that can be pulled out. Below the shelf board 65, connectors 66, 6
A front panel 69 having 7, 68 is provided. A water supply hose 202 is detachably connected to the connector 66, a water discharge hose 203 is detachably connected to the connector 67, and a drain hose 204 is detachably connected to the connector 68. The front panel 69 is provided with a changeover switch 70 for selecting which of the cleaning device 60 and the faucet 201 the electrolyzed water generated by the water creating device 3 is supplied.

As shown in FIGS. 14 to 16, the conduits 71, 72, 73 connected to the connectors 66, 67, 68 are shown.
Extends into cabinet B. Inside the cabinet B, behind the shelf board 65, there are connectors 74, 75, 7
6, 77 are provided. The conduit 71 is a connector 74
, The conduit 72 is connected to the connector 75, and the conduit 73 is bifurcated and connected to the connectors 76 and 77. A pipe line (not shown) detachably connected to the connector 74 extends upward behind the washing device 60,
It is detachably connected to the lower end of the connector 78. A conduit (not shown) detachably connected to the upper end of the connector 78 is connected to the water creating device 3 via the solenoid valve 1 and the constant flow valve 2. The first produced water discharge pipe extending from the water creating device 3. 13e is detachably connected to the connector 79, and further, the cleaning device 60
It extends to the lower part through the back of. First generated water discharge pipe 1
The three-way valve 40 is disposed on the way of 3e, and the three-way valve 40
A branch pipe 41 extends downwardly from. The first produced water discharge pipe 13e extending downward from the three-way valve 40 is provided with the cleaning device 60.
Is connected to the cleaning tank 4. The lower end of the branch pipe 41 is detachably connected to the connector 75. Cleaning device 6
The conduit 7d extending from the 0 pump 9 is detachably connected to the connector 76, and the second generated water discharge pipe 13f extending downward from the water creating device 3 to the rear of the washing device 60 is detachably connected to the connector 77. are doing.

By the changeover switch 70, the water creating device 3
When the selection is made to supply the electrolyzed water generated in 1. to the cleaning device 60, the electrolyzed water generated in the water creating device 3 passes through the three-way valve 40 and the first generated water discharge pipe 13e, and then the cleaning device. 6
It is supplied to 0. When the selection switch 70 selects the supply of the electrolyzed water generated by the water creating device 3 to the faucet 201, the electrolyzed water generated by the water creating device 3 is supplied to the three-way valve 40, the branch pipe 41, and the connector 75. It is supplied to the faucet 201 through the pipe 72, the connector 67, and the water discharge hose 203. The generated water discharged from the water creating device 3 to the second generated water discharge pipe 13f and the waste water discharged from the cleaning device 60 to the conduit 7d are connected to the conduit 73 via the connectors 76 and 77.
And is discharged to the sink 200 through the connector 68 and the drain hose 204.

When the instrument cleaning device A is used as a dental instrument cleaning device, the instrument cleaning device A is used as a single cabinet B.
The counter of the sink can be widely used as compared with the case where the instrument cleaning apparatus A is placed on the counter of the sink by storing the instrument cleaning device A on the side of the sink in the dental care field.

[0067]

As described above, since the instrument cleaning device according to the present invention has the electrolytic bath and the electrolytic substance addition device for adding the electrolytic substance to the fresh water supplied to the electrolytic bath, the electrolytic substance is added to the fresh water. The electrolytic solution having a high concentration of the electrolytic substance thus obtained can be electrolyzed to generate strongly alkaline water and strongly acidic water. Therefore, the instrument cleaning device according to the present invention has sufficient cleaning ability for oil and fat-based and protein-based stains and sufficient sterilization ability. Since the instrument cleaning device according to the present invention is provided with a sealable cleaning tank, contaminants such as bacteria adhering to the instrument, strong alkaline water, and strong acid water are prevented from scattering into the room, and are safe for the human body. is there. Since the instrument cleaning device according to the present invention includes the injection device that injects the generated water of the water creating device into the cleaning tank, the generated water of the water creating device is injected at high speed to the device placed in the cleaning tank, Equipment can be washed, sterilized and rinsed quickly. Since the instrument cleaning device according to the present invention includes the control device that controls the operation of the water creating device and the operation of the injection device, cleaning, sterilization, and rinsing of the device can be performed automatically and quickly.

When the electrolytic cell is a non-diaphragm type electrolytic cell, the distance between the electrodes is shortened, the flow rate of the electrolytic solution flowing in the flow path between the electrodes is increased, and hydroxide ions and hydrogen ions supplied to the electrode surface are reduced. By increasing the amount, it is possible to accelerate the electrolysis of the electrolytic solution while suppressing an increase in the voltage applied between the electrodes.
As a result, generation of strong alkaline water and strong acidic water is promoted, and strong acidic water having a low concentration of hypochlorous acid is obtained. By reducing the concentration of highly corrosive hypochlorous acid, corrosion of the equipment is suppressed. When the electrolytic substance is salt, it is easy to purchase and replenish the electrolytic substance. When control is performed to reverse the polarity of the DC voltage applied between the electrodes of the electrolytic bath, only one of the two outlets of the electrolytic bath is connected to the cleaning bath, and the cleaning bath is exposed to strong alkaline water. Can supply strong acidic water. As a result, the piping system of the instrument cleaning device is simplified.

A water creating apparatus having an apparatus for adding an alkaline substance to fresh water and an apparatus for adding an acidic substance to fresh water has a simpler construction than a water creating apparatus having an electrolyzer, and the manufacturing cost of the apparatus cleaning device is high. Is reduced. When the water contact portion of the cleaning tank is made of a corrosion resistant material, corrosion of the cleaning tank due to strong acid water is suppressed, and the life of the instrument cleaning device is extended. The injection device is easily configured by an injection nozzle and a pressurizing device, or by a centrifugal fan. When the spray nozzle is a shower nozzle, the water generated by the water creating device can be dispersed and sprayed in a wide range, and the surface of the device can be uniformly cleaned and sterilized.
Can be rinsed. When the instrument cleaning device includes a heater for heating the generated water of the water creating device, the cleaning ability and the drying ability of the instrument cleaning device are improved.

By automatically washing the equipment in the order of washing with strong alkaline water, sterilization with strong acid water, and rinsing with fresh water, a high washing effect, sterilizing effect and washing efficiency can be obtained. By automatically washing and drying the instrument in the order of washing with strong alkaline water, sterilization with strong acidic water, rinsing with fresh water, and blast drying, all the washing steps including the drying step of the instrument are automated. As a result, the cleaning efficiency of the device is further improved. When strong alkaline water, strong acid water, or fresh water is used in circulation, the water generating device can be stopped while the generated water in the water generating device is being circulated and used. Electric power is reduced. By replacing the strongly alkaline water remaining in the cleaning tank with the strongly acidic water, the effect of sterilization by the strongly acidic water in the next step is improved.

When the pH of the strongly alkaline water is 11 or more, a sufficient cleaning effect can be obtained, and when the pH of the strongly acidic water is 3 to 5 and effective chlorine is contained at a concentration of about 20 ppm,
A sufficient bactericidal effect is obtained, and corrosion of the equipment is prevented. When the pH of the strongly alkaline water is 11 or more, a sufficient cleaning effect is obtained, and the pH of the strongly acidic water is 3 or less,
When the effective chlorine is contained at a concentration of 0.5 ppm to 20 ppm, a sufficient bactericidal effect can be obtained and corrosion of the equipment can be prevented. By disposing the water creating device on the way of the water supply pipe of the instrument cleaning device, the instrument cleaning device is downsized.

In the medical field, strong acidic electrolyzed water may be used for treatment of atopic dermatitis and sterilization of the oral cavity. Even at home, strong acidic electrolyzed water may be used to treat atopic dermatitis. When the equipment cleaning device is equipped with a switching device that switches the supply destination of the generated water of the water creation device between the cleaning tank and the drain port, the strongly acidic water generated by the water creation device is taken out from the drain port and the atopic dermatitis It can be used for treatment, cleaning of the oral cavity, disinfection, etc.

The used dental instruments to which the patient's blood and body fluid have adhered are automatically washed and sterilized in a single device from the viewpoint of preventing a worker involved in washing the dental instruments from being infected with an infectious disease. It is desirable to do. By using the dental instrument cleaning device provided with the instrument cleaning device according to the present invention, it is possible to automatically clean and sterilize the dental instrument after use. By storing the dental instrument cleaning device in a single cabinet and installing it next to the sink at the dental care site, the sink counter can be used more widely than when the dental instrument cleaning device is placed on the sink counter. .

The dishwashing apparatus provided with the instrument washing apparatus according to the present invention exhibits high washing ability, sterilizing ability and high washing efficiency.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an instrument cleaning device according to an embodiment of the present invention.

FIG. 2 is a device configuration diagram of a water creation device provided in the instrument cleaning device according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view of a non-diaphragm type electrolytic cell provided in the instrument cleaning device according to the embodiment of the present invention.

FIG. 4 is a rear view in which a part of the electrolytic cell shown in FIG. 3 is cut away.

5 is a cross-sectional view taken along the line VV of FIG. The electrode plates and spacers are omitted for simplification.

6 is an enlarged view of a portion inside a circle A in FIG.

7 is a cross-sectional view taken along the line VII-VII of FIG.

8 is a cross-sectional view taken along the line VIII-VIII of FIG.

FIG. 9 is a diagram showing a procedure of an operation for cleaning an instrument using the instrument cleaning apparatus according to the present invention.

FIG. 10 is a diagram showing the results of an experiment for confirming the formation of strongly alkaline water and strongly acidic water using the water creating device provided in the instrument cleaning device according to the example of the present invention.

11 is an overall configuration diagram showing a modified example of the instrument cleaning device of FIG.

FIG. 12 is a perspective view of a dental instrument cleaning device storage cabinet in which the instrument cleaning device according to the present invention is installed, which is installed beside a sink at a dental care site.

13 is a partial front view of the dental instrument cleaning device storage cabinet of FIG.

FIG. 14 is a partial side cross-sectional view of the dental instrument cleaning device storage cabinet of FIG.

FIG. 15 is a view taken along the line XV-XV in FIG.

16 is an XVI-XVI arrow view of FIG. 14. FIG.

[Explanation of Codes] A Dishwasher 3 Water Creating Device 4 Washing Tank 5 Dish Storage Basket 6 Injector 8, 9 Pump 10 Water Level Sensor 11 Heater 12 Blower Fan 15 Diaphragm Electrolyzer 39 Control Unit B Dental Instrument Cleaning Device Storage Cabinet 60 cleaning device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ayako Hirano 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City Tohoku Kikai Co., Ltd. (72) Hisato Haraga 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu No. 1 in Tohoku Kikai Co., Ltd. (72) Hidemine Miyahara 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City (72) Inventor Shigeru Ando 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu No. 1 in Totoki Co., Ltd.

Claims (21)

[Claims] 1. A water creating device having an electrolytic bath and an electrolytic substance adding device for adding an electrolytic substance to fresh water supplied to the electrolytic bath, and a water creating device capable of generating strong alkaline water and strong acidic water, and a sealable washing. An apparatus cleaning device comprising: a tank, an injection device for injecting the water generated by the water creation device into the cleaning tank, and a control device for controlling the operation of the water creation device and the operation of the injection device. 2. The instrument cleaning device according to claim 1, wherein the electrolytic cell is a diaphragmless electrolytic cell. 3. The instrument cleaning device according to claim 1, wherein the electrolytic substance is salt. 4. The instrument cleaning device according to claim 1, wherein the control device performs control to reverse the polarity of the DC voltage applied between the electrodes of the electrolytic cell. 5. A water creating device having a device for adding an alkaline substance to fresh water and a device for adding an acidic substance to fresh water, capable of generating strongly alkaline water and strongly acidic water, and a sealable washing tank. An apparatus cleaning device, comprising: an injection device that injects the water generated by the water creation device into the cleaning tank, and a control device that controls the operation of the water creation device and the operation of the injection device. 6. The instrument cleaning device according to claim 1, wherein the water contact portion of the cleaning tank is made of a corrosion resistant material. 7. The instrument cleaning device according to claim 1, wherein the injection device has an injection nozzle and a pressurizing device. 8. The injection device has a shower nozzle and a pressurizing device, as claimed in any one of claims 1 to 6.
The instrument cleaning device according to the item. 9. The instrument cleaning device according to claim 1, wherein the injection device has a centrifugal fan. 10. The instrument cleaning device according to claim 1, further comprising a heater for heating the water produced by the water creating device. 11. The control device actuates the water creating device to generate strong alkaline water and strong acidic water, and jets the strong alkaline water from the jetting device to wash the instrument placed in the washing tank, A control for sterilizing an instrument that has been washed by injecting strongly acidic water from the injection device, stopping the operation of the water creating device, and rinsing the instrument that has been sterilized by injecting fresh water from the injection device. The instrument cleaning device according to any one of 1 to 10. 12. An air blower is provided for blowing air into the cleaning tank,
The control device operates the water creation device to generate strong alkaline water and strong acidic water, sprays the strong alkaline water from the spraying device to wash the equipment placed in the cleaning tank, and sprays the strong acidic water. Control that sterilizes the equipment that has been sprayed and washed from the device, stops the operation of the water creation device, rinses the sterilized equipment that is sprayed with fresh water from the spraying device, and blows air into the washing tank to dry the rinsed equipment. The instrument cleaning device according to any one of claims 1 to 10, wherein 13. A recirculation mechanism for collecting the strong alkaline water, the strongly acidic water, and the fresh water injected from the injection device and returning it to the injection device, and the strong alkaline water, the strongly acidic water, and the fresh water are circulated for use. The instrument cleaning device according to claim 11 or 12, wherein. 14. The control device controls the supply of strong acidic water to the cleaning tank after cleaning the appliance and before sterilizing the appliance to replace the strong alkaline water remaining in the cleaning tank with the strong acidic water. The instrument cleaning device according to claim 13, wherein: 15. The strongly alkaline water has a pH of 11 or higher, and the strongly acidic water has a pH of about 3 to about 5.5 and about 20.
The instrument cleaning device according to any one of claims 1 to 14, further comprising hypochlorous acid at a concentration of ppm. 16. The strongly alkaline water has a pH of 11 or more, the strongly acidic water has a pH of 3 or less, and contains hypochlorous acid at a concentration of 0.5 ppm to 20 ppm. 14. The instrument cleaning device according to any one of 14. 17. The water creating device is arranged on the way of the water supply pipe of the instrument cleaning device.
The instrument cleaning device according to claim 1. 18. The instrument cleaning device according to claim 1, further comprising a switching device that switches a supply destination of the generated water of the water creating device between the cleaning tank and the drainage port. . 19. A dental instrument cleaning apparatus comprising the instrument cleaning apparatus according to claim 1. 20. A dental instrument cleaning device cabinet in which the dental instrument cleaning device according to claim 19 is incorporated. 21. A dishwashing device comprising the instrument washing device according to any one of claims 1 to 18.