JP3962460B2 - Concentrated electrolyzed water production method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing concentrated electrolyzed water obtained from electrolyzed water produced by an electrolyzed water producing device and an apparatus therefor .
[0002]
[Prior art]
In the electrolyzed water generating device, for example, effective chlorine concentration (ppm), hydrogen ion concentration (pH) can be obtained by increasing the electrolyte concentration of the electrolyzed water, increasing the electrolysis current value, or reducing the flow rate of the electrolyzed water. It is possible to obtain concentrated electrolyzed water with improved
[0003]
[Problems to be solved by the invention]
By the way, the concentrated electrolyzed water obtained by the electrolyzed water generating device generally has a water temperature of room temperature or higher, so that the volatilization of chlorine gas in acidic water or the decomposition of hypochlorous acid is likely to occur. May decrease in a short time. Moreover, when the electrolysis current value is increased in the electrolyzed water generating device, the load on the electrode may increase and the life of the electrode may be reduced.
[0004]
[Means for Solving the Problems]
In order to address the above problems , the present invention circulates and supplies the electrolyzed water generated by the electrolyzed water generator to the ice making part of the circulation type ice making machine, and the pure water component is supplied during the ice making process in the ice making part. This is a method for producing concentrated electrolyzed water that can be removed to increase the effective chlorine concentration and lead to cooled concentrated electrolyzed water. In the implementation, the electrolyzed water generated by the electrolyzed water generator is used. A water supply means for circulatingly supplying the ice making water tank of the circulation type ice making machine through the ice making part of the ice making machine, and the pure water component is removed and concentrated in the ice making process in the ice making part and cooled and cooled. The present invention provides an apparatus for producing concentrated electrolyzed water, comprising a deriving means for deriving concentrated electrolyzed water stored in the ice making water tank from the ice making water tank.
[0005]
[Operation and effect of the invention]
The concentrated electrolyzed water produced by the production method and the apparatus of the present invention is obtained by removing pure water components of electrolyzed water produced by the electrolyzed water producing device by ice making at an ice making part of a circulation type ice making machine. Therefore, in acidic electrolyzed water, the pH value is lowered and the effective chlorine concentration is increased, and in alkaline electrolyzed water, the pH value is raised and the effective chlorine concentration is increased. Expected to improve efficacy by increasing concentration.
[0006]
Further, the concentrated electrolyzed water produced by the production method and the apparatus of the present invention is obtained by circulatingly supplying the electrolyzed water produced by the electrolyzed water producing device to the ice making part of the circulation type ice making machine, and by making ice in the ice making part. Since it is obtained by removing a predetermined amount of pure water component of electrolyzed water and is itself cooled, a component (eg, chlorine gas or hypochlorous acid) in concentrated electrolyzed water is stable for a long time. It is preserved and its function is not impaired in a short time. In addition, when the sterilization treatment of the article to be treated is performed using the concentrated electrolyzed water (cold water) generated by the production method and apparatus of the present invention, the product temperature of the article to be treated can be lowered, Bacterial growth in the article to be treated after the sterilization treatment can be suppressed, and a good sterilization / bacteriostatic effect can be obtained.
[0007]
The apparatus for producing concentrated electrolyzed water according to the present invention can be configured by connecting an introduction pipe for electrolyzed water and a lead-out pipe for concentrated electrolyzed water to an existing circulating ice maker equipped with an ice making water tank. Since the basic configuration of the machine can be used effectively, it can be manufactured easily and inexpensively. In addition, the apparatus for producing concentrated electrolyzed water according to the present invention produces cooled concentrated electrolyzed water and also produces ice containing almost no impurities. After washing and sterilization treatment, the ice can be used for good cooling storage.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The concentrated electrolyzed water production apparatus shown in FIG. 1 includes an electrolyzed water generating device A, a flow-down type ice maker B, and a concentrated electrolyzed water tank C, and the electrolyzed water generating device A and the flow-down type ice maker B include an introduction pipe. 11, and the flow-down type ice making machine B and the concentrated electrolyzed water tank C are connected via a lead-out pipe 13.
[0009]
The electrolyzed water generating device A is a per se known one having a diaphragm membrane electrolyzer 15, the operation of which is controlled by a control device (not shown), and supply of dilute salt water to the dilute salt water conduit 14. The electrolyzed water (acidic water and alkaline water) generated by energization between the electrode plates 17 and 19 is led to the four-way switching valve 25 through the conduits 21 and 23, and one electrolyzed water passes through the introduction pipe 11. Water is supplied to the ice making machine B, and the other electrolyzed water is supplied to a water storage tank (not shown) through the conduit 27. The electrolyzed water supplied from the electrolyzed water generator A to the ice maker B can be switched by switching the four-way switching valve 25, and the acidic water is supplied from the electrolyzed water generator A to the ice maker B. It is also possible to supply alkaline water.
[0010]
The ice making machine B is a flow-down type ice making machine which is a type of circulation type ice making machine known per se, and its operation is controlled by a control device (not shown). In addition, an ice making water tank 33 and a stocker 35 are provided below. In addition, the ice making machine B cools the ice making plate 31 during the ice making process by cooling the ice making plate 31 during the ice making process, and the water spray pipe 36 for spraying the electrolyzed water supplied through the introduction pipe 11 during the water supply process from the upper back to the lower side of the ice making plate 31. A refrigeration circuit including a compressor 37, a condenser 39, an expansion valve 41, an evaporator 43, a hot gas valve 45, and the like that are sometimes heated is provided, and electrolyzed water in the ice making water tank 33 is placed on the front surface of the ice making plate 31 during the ice making process. A circulation pump 47 and a water spray pipe 48 are provided.
[0011]
Further, the ice making water tank 33 detects that the water level in the ice making water tank 33 has reached the upper specified value and outputs a water supply stroke completion signal and detects that the water level has reached the lower specified value. A water level sensor 49 for outputting a completion signal of the stroke is provided, and water in the ice making water tank 33 is discharged outside the apparatus when the water level in the ice making water tank 33 reaches an abnormal water level (water level higher than the upper specified value). An overflow pipe 51 is provided. Further, between the ice making plate 31 and the ice making water tank 33, a guide plate 53 for guiding the water flowing down from above to the ice making water tank 33 and guiding the ice I that has been made and dropped by the ice making plate 31 to the stocker 35 is disposed. Has been. The stocker 35 is provided with an ice storage sensor 55 that detects that the ice storage level in the stocker 35 has reached the upper limit.
[0012]
The concentrated electrolyzed water tank C is a concentrated electrolyzed water supplied from the ice making water tank 33 by driving the pump 57 interposed in the outlet pipe 13 during the water collecting process executed after the water supply process, ice making process and deicing process of the ice making machine B. A water level sensor 59 that is a tank for storing water and detects that the water level in the tank C has reached the upper limit value is provided. The concentrated electrolyzed water tank C is provided with a water supply valve 61, a water supply pipe 63, and a pump 65 for using the concentrated electrolyzed water for use. The outlet pipe 13 is provided with a drain valve 67.
[0013]
In the concentrated electrolyzed water production apparatus configured as described above, the water supply process, the ice making process, the deicing process, and the water collecting process are performed until the water level in the concentrated electrolyzed water tank C or the ice storage level in the stocker 35 reaches the upper limit. The cycle is executed repeatedly. In the water supply stroke, the electrolyzed water generating device A is operated, and electrolyzed water generated by the electrolyzed water generating device A flows toward the ice making water tank 33 through the introduction pipe 11 and the water spray pipe 36, and the water level sensor 49 is defined upward. By detecting the value, the operation of the electrolyzed water generator A is stopped, the water supply stroke is completed, and the ice making stroke is started.
[0014]
During the ice making process, the compressor 37 operates to cool the ice making plate 31 with the hot gas valve 45 closed, and the pump 47 is driven to circulate and supply the electrolyzed water in the ice making water tank 33 to the ice making plate 31. Thus, ice mainly composed of pure water component of the electrolyzed water is generated on the front surface of the ice making plate 31. This ice making process is completed when the water level sensor 49 detects the lower specified value and the pump 47 is stopped, and then the hot gas valve 45 is opened to start the deicing process, and the pump 57 is driven. The water collection process begins. In the deicing process, the ice making plate 31 is heated and the ice I is detached from the ice making plate 31 and falls to the stocker 35. On the other hand, in the water collecting process, the concentrated electrolyzed water in the ice making water tank 33 is supplied to the concentrated electrolyzed water tank C in a cooled state by driving the pump 57.
[0015]
Therefore, if the above concentrated electrolyzed water production apparatus is used, for example, 0.8 liter of water, pH 2.7, effective chlorine concentration of 30 ppm, and water temperature of 20 ° C. from electrolyzed water of 0.4 liter, pH 2.6, effective in one cycle. Concentrated electrolyzed water with a chlorine concentration of 55 ppm and a water temperature of 2 ° C. can be produced, and the water volume is 0.8 liter, pH 5.0, the effective chlorine concentration is 30 ppm, and the water temperature is 20 ° C. From the electrolyzed water, the water volume is 0.4 liter, pH 4.3, effective chlorine Concentrated electrolyzed water with a concentration of 56 ppm and a water temperature of 2 ° C. can be produced, and the amount of water is 0.8 liter, pH 8.5, effective chlorine concentration is 30 ppm, and the amount of water is 0.4 liter from electrolyzed water with a water temperature of 20 ° C., pH 9.1, effective chlorine concentration. Concentrated electrolyzed water of 55 ppm and water temperature 2 ° C. can be produced.
[0016]
By the way, the concentrated electrolyzed water obtained as described above removes the pure water component of the electrolyzed water generated by the electrolyzed water generating device A by ice making at the ice making unit (ice making plate 31) of the circulation type ice making machine B. In the case of acidic electrolyzed water, the pH value is lowered and the effective chlorine concentration is increased, and in alkaline electrolyzed water, the pH value is raised and the effective chlorine concentration is increased. Even so, improvement in efficacy can be expected by increasing the effective chlorine concentration.
[0017]
Further, the concentrated electrolyzed water circulates and supplies the electrolyzed water generated by the electrolyzed water generating device A to the ice making unit of the circulation type ice making machine B, and the ice making in the ice making unit makes a predetermined amount of pure water component of the electrolyzed water. Since it is obtained by removing it and itself cooled, components (for example, chlorine gas or hypochlorous acid) in concentrated electrolyzed water can be stored stably for a long time, and its function can be achieved in a short time. It will not be damaged. In addition, when the article to be treated is sterilized using the concentrated electrolyzed water (cold water), the product temperature of the article to be treated can be lowered. Proliferation can be suppressed, and a good bactericidal and bacteriostatic effect can be obtained.
[0018]
Further, the concentrated electrolyzed water production apparatus can be configured by connecting the electrolyzed water introduction pipe 11 and the concentrated electrolyzed water outlet pipe 13 to an existing circulating ice making machine B having an ice making water tank 33, and the existing circulating Since the basic configuration of the ice making machine B can be effectively used, it can be manufactured easily and inexpensively. In addition, the concentrated electrolyzed water production apparatus produces cooled concentrated electrolyzed water and produces ice containing almost no impurities. For this reason, for example, fish and other foods can be washed and sterilized using the concentrated electrolyzed water. After that, the ice can be used for good cooling storage.
[0019]
In the above embodiment, the flow-down type ice making machine B is adopted as the circulation type ice making machine, but other circulation type ice making machines such as a cell type can be adopted. Moreover, although the electrolyzed water generating apparatus A was equipped with the electrolytic cell 15 of a diaphragm membrane and produces | generates acidic electrolyzed water and alkaline electrolyzed water as an electrolyzed water generating apparatus, it implemented, but other electrolyzed water generating apparatuses are employ | adopted. It is also possible to carry out. In addition, the concentrated electrolyzed water tank C is temporarily stored for use, but it can also be used directly from the ice making water tank 33 for use.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing an embodiment of a concentrated electrolyzed water production apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS A ... Electrolyzed water production | generation apparatus, B ... Circulation type ice maker, C ... Concentrated electrolyzed water tank, I ... Ice, 11 ... Introducing pipe, 13 ... Outlet pipe, 33 ... Ice making water tank.

Claims (2)

The electrolyzed water generated by the electrolyzed water generator is circulated and supplied to the ice making unit of the circulation type ice maker, and its pure water component is removed during the ice making process in the ice making unit to increase the effective chlorine concentration and to be cooled. A method for producing concentrated electrolyzed water in which concentrated electrolyzed water is derived . A water supply means for circulating and supplying the electrolyzed water generated by the electrolyzed water generator to the ice making water tank of the circulation type ice making machine through the ice making part of the ice making machine, and the pure water component in the ice making process in the ice making part. An apparatus for producing concentrated electrolyzed water comprising deriving means for deriving the concentrated electrolyzed water that has been removed and concentrated and cooled and stored in the ice making water tank from the ice making water tank .

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