JP3452387B2 - Sterilization cleaning device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilizing / cleaning device for sterilizing / cleaning a dialysate flow path of an artificial dialyzer, and particularly to removing and sterilizing protein components and toxins attached to the dialysate flow path of a dialyzer. The present invention relates to a sterilization / cleaning device that can perform cleaning and can use a cleaning liquid without waste.

[0002]

2. Description of the Related Art Artificial dialysis is a method of treatment for patients with chronic renal failure having impaired functions of removing waste products and water from the blood of the kidney, and adjusting the concentrations of components such as sodium, potassium and calcium in appropriate amounts. The dialysate and the blood extracted from the vein of the dialysis patient are exposed through the dialysis membrane, and sodium, potassium, calcium, urea, water, etc. are exchanged between the dialysate and the blood by the diffusion principle. As a result, excess metabolites and water are removed from the blood, and the purified blood is returned to the dialysis patient to eliminate the uremic symptoms.

In such an artificial dialyzer for performing artificial dialysis, a protein component dialyzed from the patient's blood in a pipe or a hose (dialysate flow path of a patient monitor, especially a downstream flow path of the dialyzer), Gram-negative Bacteria, toxins, etc. adhere to it, making it a hotbed for bacteria. Therefore, it is necessary to wash these regularly, and conventionally, washing using pure water and a chemical solution having reverse osmosis is performed.

For example, every time dialysis of one patient is completed, reverse osmosis water is circulated in the dialyzer for about 30 minutes to clean the dialysate flow path.

After each day of dialysis treatment, reverse osmosis water is circulated through the dialysis machine for about 30 minutes to wash the dialysate flow path, and then the crystals of citric acid are reversed for about 30 minutes. A solution of 1% dissolved in osmotic water is passed to sterilize and wash the dialysate channel, and reverse osmosis water is passed for about 30 minutes to wash the dialysate channel with acid, and then chlorine dioxide (ClO) is added.
Disinfect ₂ ) with reverse osmosis water and wash the dialysate flow path for sterilization. Allow this solution to stay in the dialysate flow path for 4 to
After soaking for 5 hours, reverse osmosis water is allowed to flow for about 2 hours to wash away the hypochlorous acid component from the dialysate flow channel, and after confirming the residual chlorine concentration, preparations for the next dialysate flow are made.

Further, once a week, instead of sterilizing and washing with a 1% citric acid solution and a chlorine dioxide solution, washing with a chemical solution that decomposes and removes the protein adhering to the dialysate flow path is performed. The sterilization and cleaning of the road is made more reliable.

[0007]

However, even if the dialysate flow passage is sterilized and washed by the conventional washing method described above, there are places where sterilization and washing are difficult due to the structure of the dialyzer, and such a region is a hot bed of bacteria. Experience has shown that it is easy to become.

For example, a pair of stock solution tanks are connected to the automatic dialysate supply apparatus, and one tank A stores a stock solution of dialysate prepared by preparing an appropriate amount of substances such as calcium, magnesium, potassium and sodium. Baking soda is stored in the other tank B. Of these, since a high-concentration dialysate flows through the path connecting the tank A and the dialysate automatic supply device, the flow path is not contaminated by bacteria due to the sterilizing action of the dialysate.

On the other hand, in the path connecting the tank B and the automatic dialysate feeder, the dialysate (baking soda) is in circulation and the baking soda does not have a sufficient sterilizing ability, so that it is likely to become a hotbed of bacteria. To sterilize this route, a diluted solution of hypochlorous acid or the like may be stored in the tank B, and this solution may be circulated through the dialysate flow path through the same route as during dialysis. However, since the tank B is a dialysate storage tank, storing the above-mentioned drug requires a large amount of reverse osmosis water and a cleaning time in order to clean the tank B until the drug component is exhausted. To do. For this reason, the route connecting the tank B and the dialysate automatic feeder is likely to become a hotbed of bacteria.

Also, when viewed comprehensively, the amount of pure water required for cleaning becomes enormous, and there is a problem that the cleaning time is long. Actually, the cleaning time of the dialyzer is about 50% of the dialysis time, and it is 0.15 t / per dialyzer.
I used pure water of the day. Therefore, in order to perform dialysis treatment for a large number of patients, many dialysis machines are introduced,
It is necessary to introduce a pure water production system with a large production capacity,
It was a bottleneck for realizing timely and inexpensive medical care.

Further, since toxins such as endotoxin and bacteria such as Gram-negative bacteria are hidden and attached to the protein component etc. on the hose etc. of the dialyzer, the disinfectant or sterilizing liquid should be removed after the protein component is sufficiently removed. It has also been proved that endotoxins cannot be removed or Gram-negative bacteria cannot be killed unless they are flushed. Therefore, after washing with sufficient reverse osmosis water to remove protein components, toxins are removed and bacteria are sterilized using expensive chemicals containing chlorine, hypochlorite, EDTA, etc. It was necessary to wash with reverse osmosis water.

On the other hand, since there is only one type of dialysate prepared by one dialysate automatic feeder, even if a plurality of dialysers are connected to one dialysate automatic feeder, the same dialyser is used for each dialyser. The dialysate is supplied. In artificial dialysis, it is necessary to supply a dialysate in accordance with the patient's condition. Therefore, it is often the case that each dialyzer is provided with an automatic dialysate supply device to increase the degree of freedom of the dialysate supplied to the patient. Therefore, the development of the most effective sterilizing and cleaning device for such a dialyzer has been desired.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to sterilize an object to be cleaned in a short time at low cost and to use a cleaning liquid without waste. .

[0014]

In order to achieve the above object, the sterilizing / cleaning apparatus of the present invention comprises an electrolytic cell containing raw water, which is divided into an anode chamber and a cathode chamber by a diaphragm to form the anode chamber and the anode chamber. An electrode plate is provided in each of the cathode chambers, and three kinds of cleaning liquids of oxidizing water generated in the anode chamber, reduced water generated in the cathode chamber, and water supplied from another supply source are
In a sterilization cleaning device that alternately supplies to each of a plurality of cleaning objects, a plurality of switching valves are provided in each of the oxidizing water outflow path, the reducing water outflow path, and the water supply path.
Directly connected, through each of these switching valves , directly connected to the flow path for introducing the cleaning liquid to the plurality of cleaning objects ,
Seed of cleaning liquid supplied to each of the plurality of cleaning objects
It is characterized in that the three kinds of cleaning liquids are supplied to the cleaning object while providing a phase difference in the supply timing so that the classes are different on the same time axis .

In this case, a polarity reversing circuit for reversing the polarity of the voltage applied to the electrode plate and a flow path for switching the respective outflow passages of the oxidizing water and the reducing water generated in the electrolytic cell according to the operation of the polarity reversing circuit. A road switching mechanism may be provided. Further, it is particularly effective that the number of objects to be cleaned is 3n (n: natural number).

[0016]

[0017]

[Function] Reduced water has an extremely large effect of eluting protein components adhering to the dialysate flow path of an artificial dialyzer, while oxidized water has a toxin removing effect and a bactericidal effect.
Therefore, washing with alternating use of reducing water and oxidizing water to remove protein components adhering to piping etc. with reducing water, and then removing toxins and sterilizing bacteria with oxidizing water results in a relatively small amount of reducing water. The removal of the protein component can be realized by using, and it becomes possible to surely remove the toxin such as endotoxin hidden in the protein component and sterilize the Gram-negative bacterium.

Such oxidizing water and reducing water can be obtained in large quantities and at low cost simply by electrolyzing water selected from tap water, reverse osmosis water, pure water or tap water treated with soft water.
In addition, since electrolyzed water is a non-chemical substance, it has the characteristics of no persistence and no resistance to bacteria. Therefore, compared with conventional sterilization cleaning with chemical substances, it is possible to significantly reduce the washing step with reverse osmosis water after sterilization cleaning, and it is necessary to completely consider the adverse effect of residual chemical substances on dialysate. Since it does not exist, its handling is extremely simple.

Therefore, in the present invention, when sterilizing and cleaning a plurality of objects to be cleaned by using the oxidizing water and the reducing water simultaneously obtained from the same electrolyzed water generator by supplying raw water,
Three kinds of cleaning liquids are supplied to the object to be cleaned while giving a phase difference to the supply timing. Specifically, the outflow passage of oxidizing water,
Each of the reducing water outflow passage and the water supply passage is provided with a flow path and a switching valve for introducing the cleaning liquid to a plurality of cleaning objects.
Oxidized water and reduced water are simultaneously generated from the same electrolyzed water generator, so when reducing water is being supplied to a certain cleaning target, the reduced water generated at the same time is supplied to other cleaning targets. The switching valve is switched so that the remaining water is supplied to the other cleaning target. When such supply is switched while sequentially shifting the phase, the three kinds of cleaning liquids are always supplied to any one of the cleaning objects, and the electrolytic water can be effectively used without being discarded. Become.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the following, a specific example in which the sterilization cleaning device of the present invention is applied to a sterilization cleaning system for a dialysate flow path of a dialyzer will be described. 1 is a block diagram showing an embodiment of the present invention, FIG.
4 is a configuration diagram showing an electrolyzed water generator and a flow path switching mechanism that constitute a part of the sterilization / cleaning apparatus of the embodiment, FIG. 3 is a configuration diagram illustrating the operation of the flow path switching mechanism according to the embodiment, and FIG. FIG. 4 is a time chart showing the timing of supplying electrolyzed water and water in the sterilization / cleaning apparatus of the same example.

In the sterilizing and washing apparatus of this embodiment, when tap water is supplied to the reverse osmosis apparatus 1 for producing pure water, the pure water obtained is temporarily stored in a pure water tank or the like (not shown). . Then, the pure water is selectively supplied to the electrolyzed water generator 13 and the four-way valve V ₁ of the pure water supply passage 21 by the operation of a pump (not shown). The switching of the pure water supply is performed by the three-way valve 15, and the pure water supply passage 21 is used as a diluent solvent for the dialysate or used for pure water cleaning in the sterilization cleaning process. Further, it is supplied to the electrolyzed water generator 13 as raw water. In addition to pure water, for example, tap water, reverse osmosis water, and tap water that has been subjected to soft water treatment can be used in some cases, and the water referred to in the present invention is a concept including these.

In the electrolyzed water generator 13, the supplied pure water is electrolyzed to oxidize water (OX) and reduce water (RE).
D) is generated and guided from the respective outflow passages 9, 10 to the four-way valves V ₂ , V ₃ . As shown in detail in FIG. 2, the electrolyzed water generator 13 is of a so-called continuous water flow type and has an electrolyzer 2 for containing pure water generated by the reverse osmosis device 1. The interior of 2 is divided by a diaphragm 3 into a cathode chamber 4 and an anode chamber 5. Electrode plates 6 and 7 are provided in the cathode chamber 4 and the anode chamber 5, respectively. The electrode plate 6 provided in the cathode chamber 4 is a cathode, and the electrode plate 7 provided in the anode chamber 5 is an anode voltage. DC power supply 8 so that
Are connected.

However, in the present embodiment, a polarity reversing circuit 11 for reversing the polarity of the voltage applied to both electrode plates 6 and 7 at a certain fixed interval is provided. Therefore, the anode chamber 5 and the cathode chamber 6 in the electrolyzed water generator 13 of this embodiment are alternately replaced by the polarity of the power source 8 being alternately switched. Therefore, the anode chamber 5 and the cathode chamber shown in FIG. The state of 6 shows one mode thereof. That is,
It shows a state in which an anode is applied to the left electrode plate 1 and a cathode is applied to the right electrode plate 2. Hereinafter, the polarity in the state shown in FIG. 2 will be mainly described for convenience.

In the control circuit of the present embodiment, in order to invert the polarity of the voltage applied to the electrode plates 6 and 7 at predetermined time intervals, for example, a signal from a timer (not shown) is output to the polarity inversion circuit 11. Upon receiving this signal, the polarity reversing circuit 11
Reverses the polarity of the voltage applied from the DC power source 8 to both electrode plates 6 and 7 with respect to the polarity that has been supplied until then. It is preferable that the reversal timing of the polarity of the voltage applied to the electrode plates 6 and 7 is performed by sterilizing and washing once as a unit, but in the present invention, it is not particularly limited, and electrolysis is performed n times with the same polarity. You may invert. However, in order to completely elute the metal scale, it can be said that it is preferable to make the energization times in both polarities as equal as possible.

A part of the cations contained in the raw water is deposited on the cathode plate 6 as a scale to reduce the electrolysis capacity. However, as in this embodiment, the electrode plates 6 and 6 are formed at predetermined time intervals.
If the polarity of the voltage applied to 7 is reversed, the cathode plate on which the cations are deposited becomes the anode plate in the next electrolysis. As a result, the metal scale that has been deposited up to that point emits electrons, is cationized again, and is eluted into the raw water. Then, the eluted cations are collected in the cathode chamber (previously the anode chamber) and supplied as reduced water. Further, since the metal scale deposited on the cathode plate 6 is removed by ionization, and the removed cations are collected in the cathode chamber 4 and used as reduced water, the water containing the scale is discarded. There is no need.

However, when the polarity of the voltage applied to both electrode plates 6 and 7 is reversed, the types of electrolyzed water obtained from the outflow paths 9 and 10 of electrolyzed water are also reversed, so in this embodiment, the four-way valve V is used. _The flow path switching mechanism 1 is designed so that the same kind of electrolyzed water is always introduced to the two outflow pipes 9 and 10 connected to _2, V _3.
2 is provided.

The flow path switching mechanism 12 can be constructed by the construction shown in FIG. 2, but the present invention is not limited to the embodiment shown in FIG. In the flow path switching mechanism 12 shown in FIG. 2, each outflow path 9, 1
0 is provided with two three-way valves 19a, 19b, 20a, 20b, and the three-way valves 19a, 20a arranged on the upstream side and the three-way valves 19b, 20b arranged on the downstream side of the other side are connected. Further, at the beginning of switching the polarity of the applied voltage, different types of electrolyzed water remain in the outflow passages 9 and 10, so a drain pipe 25 and a drain valve 25a for pushing this out are also provided.

In such a flow path switching mechanism 12,
The following operation is performed according to the reversal of the polarity of the voltage applied to both electrode plates 6 and 7. That is, when the oxidizing water and the reducing water are introduced as they are from the outflow passages 9 and 10 of the electrolytic cell 2, the three-way valves 19a, 19b and 2 as shown in FIG.
0a and 20b are controlled. When the polarity of the voltage applied to both electrode plates is reversed from this state, the outflow paths 9 and 10 are first
In order to discard the electrolyzed water remaining inside, the three-way valves 19a and 20a are switched as shown in FIG. 3 (B). As a result, the residual electrolyzed water is discarded from the drain pipe 25 via the drain valve 25a, and a different type of electrolyzed water to be supplied next can be introduced.

When the polarity of the voltage applied to both electrode plates is reversed,
Since the type of electrolyzed water directly below the electrolytic cell is also reversed, see Fig. 3 (C).
Three-way valve 19b, as shown in, switching and 20b and drain valve 25a, always the same kind of electrolytic water to be supplied to the four-way valve V _2, V ₃ shown in FIG. Then, when the polarity of the applied voltage is reversed again, residual electrolytic water is extruded as shown in FIG. 3D, and then the three-way valves 19a and 20a are switched as shown in FIG. Supply.

When a predetermined voltage is applied to the two electrode plates 6 and 7 using such an electrolyzed water generator 13, pure water continuously supplied into the electrolytic cell 2 is electrolyzed and cations are generated. The negative ions are collected in the cathode side, that is, the cathode chamber 4, while the anions are collected in the anode side, that is, the anode chamber 5. At this time,
Since the anode chamber 5 and the cathode chamber 4 are separated by the diaphragm 3, only the oxidizing water is discharged from the outlet port 9 of the oxidizing water provided in the anode chamber 5, and the reducing water provided in the cathode chamber 4 is discharged. Only the reducing water is discharged from the outlet 10 of the. The pH value of the generated electrolyzed water is adjusted by the current density of the electrode plate in the electrolytic cell, the contact time or flow rate of the raw water with respect to the electrode plate, the amount of dissociation medium such as NaCl (dissociation degree), etc. It

Oxidized water and reduced water obtained by electrolysis by the electrolyzed water generator 13 are guided to the central supply device 18 by a pump (not shown). At this time, the oxidizing water outflow passage 9 and the reducing water outflow passage 10 from the electrolyzed water generator 13 are connected to the four-way valves V _{2 and} V ₃ , respectively, and the pure water supply passage 21 is connected to the four-way valve V ₁ . Further, the dialyzer is cleaned object as shown in FIG. 1 A, B, when C is 3 groups, each of the four-way valve V _1, V _2, V ₃ from the 3 groups of the dialyzer A, B,
Flow paths are provided for C respectively. For example, from the four-way valve V ₁ to which the pure water supply passage 21 is connected, there are three systems of flow passages 21a, 21b, 2 for three dialyzers A, B, C.
1c is connected to the four way valve V ₂ to which the outflow passage 9 of the oxidizing water is connected, and three flow passages 9a, 9b and 9c are connected to the three dialyzers A, B and C, and the reducing water is supplied. From the four-way valve V ₃ to which the outflow passage 10 is connected, three systems of flow paths 10a, 10b, 10c are connected to three dialyzers A, B, C, respectively.

For example, when dialysis is terminated and the dialysate flow path of the dialyzer is sterilized and washed, the oxidizing water, the reducing water, and the pure water are supplied in the order shown in FIG.
Sent to B and C. The supply timing will be described later. The switching of the four-way valves V _1, V _2, V ₃ is controlled by a controller (not shown).

On the other hand, on the upstream side of the electrolyzed water generator 13, there is provided a mixer 14 for increasing the dissociation degree of electrolyzed water, and a predetermined amount of dissociation medium S is supplied with the operation of the pump 16. It is supplied to the mixer 14 and added to pure water. As such a dissociation medium S, for example, sodium chloride or potassium chloride can be used.

By the way, in order to manage the pH values of the oxidizing water and the reduced water obtained in the electrolyzed water generator 13, for example, EC sensors for detecting the electric conductivity are provided upstream and downstream of the electrolyzed water generator 13. The electric conductivity is measured by these EC sensors, and the current density of the electrode plate in the electrolytic cell in the electrolyzed water generator 13 in the electrolyzed water generator 13 and the contact time of the raw water with the electrode plate are measured based on the potential difference (EC difference) before and after electrolysis. Or flow rate, addition amount of dissociation medium such as NaCl (dissociation degree)
It may be configured to control various electrolysis conditions such as, and manage to a desired pH value. This is the electric conductivity of electrolyzed water and p
It is known that there is a certain correlation with the H value (for example, Japanese Patent Application No. 5-188,16 filed by the present applicant).
(See No. 9), it is possible to estimate the pH value from the potential difference by measuring the electric conductivity using the EC sensor for the sterilizing and cleaning system of the dialyzer where it is difficult to attach the pH sensor. It is because

Specifically, the EC value detected by each EC sensor is input to the controller, the EC difference, that is, the difference in electrical conductivity before and after electrolysis is calculated, and the EC difference is stored in advance in the controller. It is judged whether or not it is within the range of the reference value. If the standard value is not satisfied, the controller outputs a control signal to the control unit of the electrolytic water generator 13 or the pump 16 of the mixer 14 to perform feedback control so that the EC value of the electrolytic water falls within the standard range. I do. Thus, since the pH value of the electrolyzed water, especially the pH value of the oxidizing water correlates with the sterilizing power, in order to effectively realize the sterilizing effect in the sterilizing and cleaning method described later,
You may make it manage the pH value of oxidizing water and raise the reliability of sterilization power. If you mainly want to control the sterilizing ability, you should only detect the EC value of the oxidizing water because the oxidizing water has the sterilizing ability, and omit the actual EC value measurement by the sensor for the reducing water. You can also This is because the oxidizing water and the reducing water generated in the electrolyzed water generator 13 have almost the same pH value, and the function of the reducing water according to the cleaning method described later is to remove proteins and the like adhering to the flow path. Because there is no need to manage it so strictly.

Next, a sterilization cleaning method using the sterilization cleaning device described above will be described. First, in the sterilization cleaning method of the present embodiment, the reducing water obtained by electrolysis is supplied to the dialyzers A, B, and C that have completed dialysis to perform cleaning. The reduced water is strongly alkaline reduced water having a pH of 11 or higher, preferably pH of 11.3 or higher. The cleaning with the reducing water may be circulating cleaning or soaking cleaning, or a combination of these cleanings can be performed. However, in this embodiment, the circulating cleaning for continuously supplying the reducing water is adopted. ing. By washing with such strongly alkaline reducing water, the protein components adhering to the dialysate flow paths of the dialyzers A, B, and C are removed, and since the removing effect is extremely large, compared with conventional washing with reverse osmosis water. An equivalent cleaning effect can be obtained with a small amount of reduced water.

After removing the protein components adhering to the dialysate flow paths of the dialyzers A, B and C, the toxin-removing cleaning and the sterilizing cleaning of the bacteria are then carried out using oxidizing water. This oxidized water has a pH =
It is super-oxidized water of 3 or less, preferably pH = 2.7 or less. The cleaning with the oxidizing water may be circulating cleaning or soaking cleaning, or a combination of these cleanings can be performed. However, in this embodiment, the circulating cleaning for continuously supplying the oxidizing water is adopted. ing. By washing with such super-oxidized water, toxins adhering to the dialysate flow path of the dialyzer can be removed and bacteria can be sterilized, but the toxin removal effect and sterilization effect of the super-oxidized water described above are extremely large. Further, since the protein component is preferably removed with reduced water, it is possible to remove toxins such as endotoxin and sterilize Gram-negative bacteria with a small amount of oxidizing water.

When the washing with the strongly alkaline reduced water and the washing with the super-oxidized water are completed, the protein components and toxins adhering to the dialysate flow paths of the dialyzers A, B and C are removed and the bacteria are sterilized. However, pure water cleaning is performed to wash away the super-oxidized water used for cleaning. This pure water cleaning needs only to remove super-oxidized water, so a small amount of cleaning in a short time is sufficient. As described above, by using the sterilizing and cleaning method of this embodiment, it is possible to improve the cleaning work which has conventionally required a long time using a large amount of pure water. In the cleaning method described above, cleaning with strong alkaline reducing water is performed, then cleaning with super-oxidizing water, and finally cleaning with pure water. Is not limited,
It is also possible to wash several times alternately.

Particularly in this embodiment, one electrolyzed water generator 1 is used.
Super-oxidized water and strong alkaline reduced water obtained from 3 at the same time,
When sterilizing and cleaning the three dialyzers A, B, and C using pure water supplied from the reverse osmosis device, these three kinds of cleaning liquids are supplied with a phase difference in the supply timing.

Specifically, FIG. 4 shows four-way valves V _1, V _{2 and} V ₃ provided in each of the oxidizing water outflow passage 9, the reducing water outflow passage 10 and the pure water supply passage 21. To switch. As shown in FIG. 4, for example, at a certain time t ₁ , pure water from the pure water supply passage 21 is reduced to the dialyzer A, oxidized water from the oxidizing water outflow passage 9 is reduced to the dialyzer C, and reduced from the reduced water outflow passage. Water is supplied to each dialyzer B.

Next, at time t ₂ , the three four-way valves V _1, V _{2 and} V ₃ are switched respectively, and the pure water from the pure water supply passage 21 is transferred to the dialyzer C and the oxidizing water from the oxidizing water outflow passage 9 is supplied. To the dialyzer B, and the reduced water from the reduced water outflow passage to the dialyzer A, respectively. Similarly, at the next time t ₃ ,
Again, the three four-way valves V _1, V _{2 and} V ₃ are switched respectively, and the pure water from the pure water supply passage 21 enters the dialyzer B and the oxidizing water outflow passage 9
Oxidized water is supplied to the dialyzer A, and reduced water from the reduced water outlet is supplied to the dialyzer C.

By repeating these operations in sequence, one dialysis machine can be subjected to the above-mentioned sterilization / cleaning method, that is, removal of protein components with reducing water, sterilization with oxidizing water, and removal of oxidizing water with pure water. And
The generated electrolyzed water is not wasted, and a storage tank is not provided on the way.

The embodiments described above are described for facilitating the understanding of the present invention, but not for limiting the present invention. Therefore, each element disclosed in the above-described embodiments is intended to include all design changes and equivalents within the technical scope of the present invention. For example, the sterilization cleaning apparatus and the sterilization cleaning method of the present invention are applied not only to the above-described cleaning of the dialysate flow path of the dialyzer, but also to other cleaning objects that require cleaning with electrolyzed water. be able to. The generated electrolyzed water is not limited to super-oxidized water or strongly alkaline reduced water, and the property of electrolyzed water can be changed according to the application target.

[0044]

As described above, according to the present invention, the electrolyzed water that can be produced at a low cost is used, and the protein component elution effect of the reduced water and the toxin removal of the oxidized water can be performed without wasting the electrolyzed water. The effect and the bactericidal effect can be effectively exhibited. Also,
By directly guiding the electrolyzed water generated in the electrolysis tank to the object to be cleaned, it is possible to reduce the size of the sterilization cleaning device. For example, in the case of providing one sterilization cleaning device for 3n objects to be cleaned. It is convenient for In addition, by sequentially reversing the polarity of the voltage applied to the electrode plate, the scale deposited on the cathode plate can be removed automatically, and the sterilization / cleaning device is also preferable in terms of maintenance.

[Brief description of drawings]

FIG. 1 is a block diagram showing a sterilization cleaning device of the present invention.

FIG. 2 is a configuration diagram showing an electrolyzed water generator and a flow path switching mechanism that constitute a part of the sterilization cleaning device of the present invention.

FIG. 3 is a configuration diagram illustrating an operation of the flow path switching mechanism according to the present invention.

FIG. 4 is a time chart showing the supply timing of electrolyzed water and water in the sterilizing and cleaning apparatus of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Reverse osmosis device 2 ... Electrolyte tank 3 ... Diaphragm 4 ... Cathode chamber 5 ... Anode chamber 6 ... Cathode plate 7 ... Anode plate 8 ... DC power supply 9 ... Oxidized water outflow passages 9a, 9b, 9c ... Flow passage 10 ... Reduction Water outflow paths 10a, 10b, 10c ... Flow path 11 ... Polarity reversing circuit 12 ... Flow path switching mechanism 13 ... Electrolyzed water generator 15 ... Three-way valve 21 ... Pure water supply paths 21a, 21b, 21c ... Flow path V _1, V _2, V ₃ ... four-way valve (switching valve) A, B, C ... dialyzer (object to be cleaned)

Continuation of the front page (56) Reference JP-A-7-284744 (JP, A) JP-A-5-237478 (JP, A) JP-A-5-50065 (JP, A) JP-A-5-220481 (JP , A) JP 7-116247 (JP, A) JP 7-108064 (JP, A) JP 2-149395 (JP, A) JP 5-329478 (JP, A) JP 52-23888 (JP, A) JP-A-1-317592 (JP, A) JP-A-2-111708 (JP, A) Actual opening 5-63695 (JP, U) Actual opening 2-117028 (JP, A) U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A61L 2/18 A61L 2/02 C02F 1/46 A61M 1/14 563

Claims (3)

(57) [Claims] 1. An electrolytic cell (2) containing raw water is divided into an anode chamber (5) and a cathode chamber (4) by a diaphragm (3), and an electrode plate (2) is formed in each of the anode chamber and the cathode chamber. 6,
7) is provided, and oxidizing water (OX) generated in the anode chamber,
Three types of cleaning liquids, reduced water (RED) generated in the cathode chamber and water (RO) supplied from another supply source,
In a sterilizing and cleaning apparatus that alternately supplies a plurality of cleaning objects (A, B, C), the oxidizing water outflow passage (9) and the reducing water outflow passage (1
0), and a plurality each of the supply path of the water (21)
Directly connect the switching valves (V1, V2, V3) of
Flow paths (21a to 21a) for introducing the cleaning liquid to the plurality of cleaning objects via the switching valves (V1, V2, V3) respectively.
21c, 9a to 9c, 10a to 10c) are directly connected, and
The type of cleaning liquid supplied to each of multiple objects to be cleaned
It is characterized in that the three kinds of cleaning liquids (OX, RED, RO) are supplied to the cleaning object (A, B, C) while making the supply timings different in phase on the same time axis. Sterilizing and cleaning equipment. 2. A polarity reversing circuit (11) for reversing the polarity of the voltage applied to the electrode plates (6, 7), and respective outflow paths (9, 10) of oxidizing water and reduced water generated in the electrolytic cell. The sterilization cleaning device according to claim 1, further comprising: a flow path switching mechanism (12) that switches the switch according to the operation of the polarity reversing circuit. 3. The number of objects to be cleaned is 3n (n: natural number)
The sterilizing / cleaning device according to claim 1 or 2, wherein