CN107022871B - Washing method and apparatus using efficient dissolution concentration technique of nanobubbles - Google Patents

Abstract

The invention relates to a washing method and a device using an effective dissolving and concentrating technology of nano bubbles, which can execute a nano bubble washing process of an open type micro-nano bubble dissolving and concentrating process or a nano bubble washing process of a closed type micro-nano bubble pressurizing, dissolving and concentrating process, wherein in the nano bubble washing process of the open type micro-nano bubble dissolving and concentrating process, the temperature of cleaning water or rinsing water is regulated to be normal temperature or a specified temperature lower than the normal temperature to continuously generate micro-nano bubbles, the micro-nano bubbles are dissolved and concentrated, the cleaning water or the rinsing water is converted into nano bubble oxygen active water, in the nano bubble washing process of the closed type micro-nano bubble pressurizing, dissolving and concentrating process, the solubility of the micro-nano bubbles of the cleaning water and the rinsing water is improved, and more dissolved oxygen and nano bubbles are dissolved and concentrated, to convert into nano-bubble oxygen activated water with high concentration.

Description

Washing method and apparatus using efficient dissolution concentration technique of nanobubbles

Technical Field

The present invention relates to a washing method and apparatus using an efficient nanobubble dissolution and concentration technique, which can improve cleanliness and reduce washing time by providing a washing machine with a nanobubble (NANO BUBBLE) generation and circulation function, and converting washing water and rinsing water into nanobubble active water having physicochemical characteristics of Dissolved Oxygen (DO, hereinafter, referred to as DO), a micro-NANO BUBBLE (M-NANO BUBBLE, hereinafter, referred to as NB), or a nanobubble (NANO BUBBLE, hereinafter, referred to as NB).

Background

The present applicant invented a green washing method and apparatus thereof which greatly improves washing ability by using physicochemical characteristics of nano bubbles and can perform washing even without using a detergent even if a small amount of detergent is used, and to which korean registration No. 10-1161477 discloses a nano bubble washing method and apparatus under the name of "washing method and apparatus using physicochemical characteristics of nano bubbles".

As shown in fig. 1, the nanobubble washing apparatus is a washing apparatus having a nanobubble generation circulation system based on a conventional washing apparatus, and the nanobubble generation circulation system NB is a washing apparatus using physicochemical characteristics of nanobubbles installed in a path of a circulation pipe in the vortex type washing apparatus of fig. 2 and the drum type washing apparatus of fig. 3.

On the other hand, since the washing method and the washing mode of the whirling type or drum type washing device are different from each other, but the same washing principle is applied, the following washing method applied to the whirling type washing device will be described as an example.

In the washing method and apparatus using the physicochemical characteristics of the nanobubbles of the prior art, a part of the disclosed processes prevent the nanobubble washing, and thus it is difficult to exhibit the washing power and the sterilizing power.

As shown in fig. 1, a conventional general washing apparatus includes: a washing outer tub 2 supported to be suspended inside the washing machine casing 1; a washing tank 3 as a washing and dewatering tank rotatably provided inside the outer tank; a washing blade 4 rotatably provided at the center of the bottom surface of the washing tub; a clutch 5 arranged at the lower part of the central part of the bottom surface of the outer groove and used for distinguishing and transmitting power; a drive motor 6 having a motor rotating shaft 7 for driving the clutch; a drive pulley 8 for transmitting a driving force of the drive motor to the clutch; a belt 10 connected with the driving pulley; a driven pulley 9 receiving the power of the driving motor by a belt; a washing shaft 13 coupled to the washing blade, which performs a washing action of the laundry when in a washing mode; a dewatering tank 14 which is coupled to a washing tank as a washing/drying tank and rotates the washing tank 3 at a high speed in a dewatering mode; a drain valve 11 for draining water in a dehydration mode; and a clutch lever 12 which is interlocked with the operation of the drain valve when in the washing mode and the dehydrating mode.

Although the above-described washing apparatus describes the configuration of the indirect drive washing system, a direct drive washing system washing machine is generally used in which the drive motor 6 and the clutch 5 are integrated, and a brushless dc motor or a synchronous ac motor, which is easy to control the rotation speed, and an inverter, which controls the rotation speed and direction of the drive motor, are used to thereby reform the configuration of the drive mechanism.

As shown in fig. 2, the washing apparatus using the physicochemical characteristics of the nanobubbles is configured based on the washing apparatus of fig. 1, and the washing outer tank of fig. 2 is further provided with a nanobubble generation circulation system NB including: a nano bubble generating device which is arranged on the path of the circulating pipe 30, the path of the circulating pipe 30 is used for making the water flow to the external tank again after descending and circulating from the washing external tank 2, and is controlled by a microcomputer; and a dissolution part integrated with the nano-bubble generation device. The nano-bubble generation circulation system NB is disposed at a position lower than the lowest water level among water levels set in the washing machine, thereby being fixed to the lower surface of the outer tub 2 or the fixed portion of the washing machine housing 1.

The washing method of the washing device using the physicochemical characteristics of the nanobubbles comprises the following steps: a micro-nano bubble pretreatment step, namely supplying water to the washing outer tank to generate and dissolve micro-nano bubbles until the outer tank is full of water, so that the oxidative decomposition force of the micro-nano bubbles is used; after the washing outer tank is full of water, continuously operating a nano bubble generation circulating device in order to generate and dissolve more micro-nano bubbles in the pretreated washing water, so that the washing water is converted into nano bubble oxygen active water and is uniformly combined with a physical washing function by utilizing the rotating force of a washing blade and the friction of the washing tank, thereby playing a washing role; and a step of stopping the operation of the nano bubble generation circulation device and draining water when the post-treatment is finished.

However, in the above micro-nano bubble post-treatment step, the efficiency of the composite washing by the physical washing stroke using the rotational force of the washing blade and the frictional force of the washing tank together with the nano bubble washing is rather lower than the efficiency of the washing performed by being divided into the nano bubble washing and the physical washing, and thus, it is prevented to obtain the nano bubble oxygen activated water having the intended washing power. That is, in the micro-nano bubble pre-treatment step, the nano bubble generation circulation device continues to operate while the pre-treated washing water passes through the micro-nano bubble post-treatment step, and therefore, if the micro-nano bubbles are generated and dissolved in the washing water or before the micro-nano bubbles are dissolved and concentrated and then converted into the nano bubble oxygen activated water having a sufficient washing power, the washing blade rotates and the friction force of the washing tank acts, a part of the micro-nano bubbles generated and contained in the washing tank is crushed and dissolved, but before most of the micro-nano bubbles are crushed and dissolved in the water, the micro-nano bubbles float on the surface of the water in a short time and disappear, thereby preventing the continuous dissolution and concentration, and thus, the washing water is not only hardly converted into the nano bubble oxygen activated water, but also reaches the limit of the washing power as a result, and thus the objective washing is hardly realized.

In order to improve the problems in the above-described micro-nano bubble post-treatment step, it is preferable to change the washing method in which the nano bubble generation circulation means is continuously activated and the washing blade is rotated, to a washing method in which the rotation of the washing blade is omitted, as described below.

First, a process of continuously operating only the nanobubble generating and circulating device without rotating the washing blade is changed to a process of dissolving and concentrating nanobubbles only in the washing water, or an electrolyte such as a surfactant or an inorganic salt, which is a catalyst for enhancing the generation of the nanobubbles, is used to efficiently dissolve and concentrate the nanobubbles, and then the washing water is converted into nanobubble oxygen active water, second, a reaction time is additionally set so that the nanobubble oxygen active water can perform a sufficient washing action with the laundry, third, when the reaction with the laundry is finished, a normal washing action using a frictional force of the washing tank together with a rotational force of the washing blade is performed in order to separate dirt such as a decomposed and sterilized corpse from the laundry, and fourth, when the washing action is finished, a process of draining is changed to a process of performing the water discharge.

Further, it is preferable that a temperature adjusting device is provided in a circulation path of the nanobubble generation circulation system to help the generation and dissolution concentration of the nanobubbles, thereby extending a repeated circulation process per unit time of the nanobubbles to generate the nanobubbles in the washing water, and the nanobubble process is performed at a normal temperature or a temperature lower than the normal temperature in order to dissolve and concentrate more air per unit volume, thereby increasing gas solubility in the washing system, and as a result, dissolved oxygen and nanobubbles having high concentration are dissolved and concentrated to improve the crushing efficiency of the nanobubbles, thereby enhancing the washing power and sterilizing power based on the expression of physicochemical characteristics in a target time.

On the other hand, with the trend of the high-tech information industry era, a technology for reducing the washing time together with various additional functions for improving the cleanliness is being studied according to the desire of consumers who need more effective and faster washing.

When considering a tendency of reducing a washing time including washing and rinsing to within one hour based on a conventional washing machine, if a washing process and a rinsing process are divided into a first washing and a main washing and a first rinsing and a main rinsing, a time except for a drainage time is only 10 minutes per process, and an applicable washing algorithm is changed according to a kind of laundry and a kind and a degree of contamination, but as a result, a shorter washing time reduces a micro-nano bubble process processing time, thereby becoming an obstacle element of dissolved oxygen and dissolution and concentration of nano bubbles as a core element for improving washing power, and thus it is difficult to optimize the dissolution and concentration of the dissolved oxygen and the nano bubbles.

Therefore, in the washing method and apparatus using physicochemical characteristics of nano bubbles, it is preferable to combine an efficient process of optimizing more concentration of dissolved oxygen and nano bubble dissolution concentration in a shorter time and unit time, and to improve the nano bubble washing system more reasonably than the nano bubble washing system disclosed above, thereby overcoming the limit of expression of washing power and sterilizing power.

Also, the preferable improvement method as described above can be applied not only to the washing stroke but also to the rinsing stroke, so that the effect of nano bubble washing can be enlarged.

In contrast, the present invention has been made in order to solve the above-described conventional problems and successfully improve the performance, and has been derived in consideration of the physicochemical characteristics and solubility characteristics of nanobubbles, which are gases.

Disclosure of Invention

The main object of the present invention is to provide a washing method and apparatus using efficient nanobubble dissolution and concentration technology, which can improve cleanliness and reduce washing time by providing a nanobubble generation cycle function to a washing machine and converting washing water or rinsing water into nanobubble oxygen activated water having physicochemical characteristics of dissolved oxygen and nanobubbles.

It is still another object of the present invention to provide a washing method using an efficient nanobubble dissolution and concentration technique and an apparatus thereof, which can separate a nanobubble treatment for supplying washing water or rinsing water from a physical washing, construct a circulation-type improved sanitary washing environment having a washing function and a sterilization function, and perform an open nanobubble washing process for providing a temperature adjustment function to the washing water or rinsing water.

Another object of the present invention is to provide a washing method and apparatus using efficient nanobubble dissolution and concentration technology, which is capable of performing an open-type nanobubble cleaning process and a closed-type outer washing tank, increasing gas solubility by applying pressure to the inside of the outer washing tank, thereby increasing efficiency of dissolution and concentration of the nanobubbles, and activating cleaning water and rinsing water into nanobubble oxygen activated water having high washing and sterilizing capabilities, thereby improving cleanliness and reducing washing time, and which is capable of performing a closed-type nanobubble washing process using nanobubble dissolution and concentration technology.

It is still another object of the present invention to provide a washing method using an efficient nanobubble dissolution and concentration technique and an apparatus thereof, which can perform efficient nanobubble dissolution and concentration, simplify the structure of a nanobubble washing apparatus, and reduce the manufacturing cost, by directly receiving power from a motor of a main driving apparatus of the washing apparatus in a circulation pressurizing motor pump of a nanobubble generation apparatus, which serves to generate nanobubbles and to circulate the nanobubbles in such a manner that an open-type or closed-type nanobubble washing process is performed.

Still another object of the present invention is to provide a washing method and apparatus using efficient dissolution and concentration technique of nanobubbles, which performs only one kind of treatment in the above-mentioned open or closed type nanobubble washing process, and performs a "pure nanobubble washing method" using no detergent or a "hybrid nanobubble washing method" using less detergent or chemicals.

The washing apparatus using open nanobubbles effective dissolution and concentration technology, which uses physicochemical characteristics of the nanobubbles to construct a circulating sanitary washing environment to generate a washing liquid for washing and sterilization, according to an embodiment of the present invention, includes: an outer washing tank for containing washing water or rinsing water forming a vortex; a washing tank as a washing and dewatering tank disposed inside the outer washing tank; a washing blade which is provided inside the washing tank so as to be capable of rotating, and generates a turbulent flow while periodically rotating forward and backward; a driving mechanism for generating the rotation motion of the washing tank and the washing blade as the washing and dehydrating tank; a nanobubble generating circulation system includes a circulation pipe for generating nanobubble water of a nano level in the inside of the washing tank and circulating the nanobubble water, a temperature adjusting device for receiving washing water or rinsing water and circulating the washing water and the rinsing water, the temperature adjusting device performing a cooling or heating function to adjust the temperature of the circulated liquid to a specific temperature, the nanobubble generating device receiving the washing water or rinsing water circulated after the temperature adjustment and performing a nanobubble process, and a dissolving part for receiving the washing water or rinsing water subjected to the nanobubble process and performing dissolution and concentration.

The nano bubble generating device includes: a pump for pressurizing the washing water or the rinsing water at a predetermined pressure or more and circulating the washing water or the rinsing water; a pump driving motor for driving the pump; a mixing part for mixing the washing water or rinsing water pressurized by the pump and the inflowing air; and a plurality of air supply units for supplying or self-sucking compressed air containing oxygen, wherein the nano-bubble generation device is connected to and integrated with a dissolving part, and the dissolving part mixes and dissolves air pressurized to a predetermined pressure or more with washing water or rinsing water pressurized to a predetermined pressure or more, thereby generating micro-nano-bubbles as very small bubbles. The temperature control device and the dissolving part may be used or omitted depending on the kind of laundry and the washing capacity.

As described above, in the washing apparatus using the effective dissolution and concentration technique of the open type nano bubbles, the temperature control means is provided in the circulation path of the nano bubble generation circulation system to facilitate the generation and dissolution and concentration of the micro-nano bubbles, thereby extending the repeated circulation process per unit time of the micro-nano bubbles to generate the micro-nano bubbles in the washing water, and the micro-nano bubble process is performed at the normal temperature or at the temperature lower than the normal temperature to dissolve and concentrate more air per unit volume, thereby increasing the gas solubility in the washing system, and as a result, the dissolved oxygen and the nano bubbles having high concentration are dissolved and concentrated to improve the breaking efficiency of the nano bubbles, thereby enhancing the washing power and the sterilizing power based on the expression of the physicochemical characteristics in the target time.

Therefore, the washing method using the effective dissolution concentration technique of the open nanobubbles according to an embodiment of the present invention comprises: a micro-nano bubble pretreatment step, wherein cleaning water or rinsing water is supplied to the washing outer tank to generate and dissolve micro-nano bubbles until the outer tank is full of water, so that the oxidative decomposition force of the micro-nano bubbles is used; after the washing outer tank is full of water, the nano bubble generating device continues to operate to execute one of the work of continuously generating the nano bubbles in the washing water or the rinsing water at normal temperature or below or the work of continuously generating the nano bubbles by using electrolyte comprising a surfactant or inorganic salts as a catalyst, so that the nano bubbles and dissolved oxygen are effectively dissolved and concentrated and are converted into nano bubble oxygen active water; a reaction step of nano bubble oxygen active water, wherein the washing water or rinsing water which is transformed into the nano bubble oxygen active water through the micro-nano bubble post-treatment step is stored for a specified time to give time for reacting with the washings; after the reaction of the nano bubble oxygen active water is finished, executing a common washing function; and draining water after washing is finished.

As described above, the washing method of the nano bubble cleaning process is improved to be standard to sequentially perform the nano bubble pre-treatment step, the micro nano bubble post-treatment step, the reaction step of the nano bubble oxygen active water, the general washing step, and the water discharge step, and is applied to the open type washing system, and thus may be referred to as an open type nano bubble cleaning process or a nano bubble washing process.

According to another embodiment of the present invention, a washing method and apparatus using an effective dissolution and concentration technique of closed nano bubbles is introduced into a closed washing outer tank, and a micro-nano bubble extrusion dissolution and concentration process of applying pressure to the inside of the washing outer tank is performed, so that the gas solubility of washing water or rinsing water contained in the washing outer tank is further improved, thereby effectively dissolving and concentrating nano bubbles and dissolved oxygen and achieving optimization, so that the washing water or rinsing water is converted into stronger nano bubble oxygen active water to express required washing power and sterilization power, and thus the micro-nano bubble pressurization dissolution and concentration process of reducing washing time is applied to washing and rinsing strokes, thereby realizing novel and effective washing.

The micro-nano bubble pressurizing, dissolving and concentrating process prolongs the repeated circulating treatment in each unit time of the micro-nano bubbles to generate the micro-nano bubbles in the cleaning water, and in order to dissolve and concentrate more air in each unit volume, the micro-nano bubbles are treated at normal temperature or below through a closed washing system, so that the gas solubility in the washing system is greatly increased, and as a result, the dissolved oxygen and the nano bubbles with high concentration are dissolved and concentrated to improve the breaking efficiency of the nano bubbles, thereby further strengthening the washing power and the bactericidal power based on the expression of physicochemical characteristics in required time.

And, the micro-nano bubble pressurization dissolution concentration process has a basic process of micro-nano bubble dissolution concentration in a repeated circulation process of making the top space of the pressure-resistant closed washing outer tank reach a specified pressure and maintaining the pressure for a specified time, and even if the washing power of the nano bubble oxygen active water is still insufficient after the basic process is finished, the pressure is reduced by discharging a specific pressure, and then the nano bubble generation circulation system NB is operated again, so that the micro-nano bubble dissolution concentration process is continuously repeated, and the promotion process of the washing and sterilizing power can be strengthened.

That is, the washing apparatus using the effective dissolution and concentration technique of the closed nano bubbles includes: a closed outer washing tank which is hermetically pressurized so as to function as a pressure tank capable of withstanding a predetermined pressure and which contains washing water or rinsing water; a washing tank as a washing/dehydrating tank; a washing blade which is provided inside the washing tank so as to be capable of rotating, and generates a turbulent flow while periodically rotating forward and backward; a driving mechanism including a clutch fixed to one side of an outer bottom surface of the closed washing outer tub to selectively rotate the washing tub and the washing blades according to each washing stroke, and a driving motor for driving the clutch; and a nanobubble generation circulation system NB including a circulation pipe for circulating the washing water or the rinsing water downward from the closed washing outer tank and then returning the washing water or the rinsing water to the closed washing outer tank, a temperature adjustment device for performing a cooling or heating function to adjust the temperature of the circulated liquid to a specific temperature, a nanobubble generation device for receiving the temperature-adjusted circulated washing water or rinsing water and performing nanobubble treatment, and a dissolution part for receiving the micro-nanobubble treated washing water or rinsing water and performing dissolution and concentration. However, the temperature control device and the dissolving section may be used according to the type of laundry and the washing capacity.

The nano bubble generating device includes: a pump for pressurizing the washing water or the rinsing water at a predetermined pressure or more and circulating the washing water or the rinsing water; a pump driving motor for driving the pump; a mixing part for mixing the washing water or rinsing water pressurized by the pump and the inflowing air; and a plurality of air supply units for supplying or self-sucking compressed air containing oxygen, wherein the nano-bubble generation device is connected to and integrated with a dissolving part, and the dissolving part mixes and dissolves air pressurized to a predetermined pressure or more with washing water or rinsing water pressurized to a predetermined pressure or more, thereby generating micro-nano bubbles (10 μm to several tens of nm) and nano-bubbles (several hundreds of nm or less) as very small bubbles and dissolving the micro-nano bubbles, thereby performing washing using an efficient nano-bubble dissolving and concentrating technique having a micro-nano-bubble dissolving and concentrating enhancing function capable of performing a nano-bubble cleaning process in a closed manner.

The washing apparatus using the effective dissolution and concentration technology of the closed nano-bubbles includes: a closed type washing outer tank improved to easily seal the upper part of the outer tank, and having a structure in which one or more drawing nozzles are formed on the side surface of the outer tank, and the drawing nozzles are provided at the lower part of the outer tank, thereby circulating washing water or rinsing water; an upper closed type outer tub cover, a sealing member for maintaining airtightness is attached to the inner side of the closed type washing outer tub cover, a hinge is installed at one side of the cover for opening or closing the cover, and one or more clamps are installed at the other side of the cover, thereby having airtightness when the cover is closed; an auxiliary device comprises a ventilation valve, a silencer and a pressure gauge, wherein the ventilation valve plays a function of leading air out when water is supplied or drained, and plays a function of maintaining pressure or adjusting pressure when the ventilation valve is converted into a pressure-resistant sealed type, the silencer is combined with the ventilation valve and is used for minimizing noise generated when compressed air is drained for adjusting pressure, the pressure gauge displays the internal pressure of the sealed type washing outer tank, and plays a role of adjusting pressure in linkage with the ventilation valve when the internal pressure exceeds a specified pressure, and the pressure gauge can be not used in the case of low-pressure household use or can be selected to be used when high pressure is required.

The pressure gauge, the vent valve and the noise eliminator as auxiliary devices can be selectively mounted on the upper part of the closed washing outer tank cover or the upper part of the side surface according to the washing environment and the device structure, thereby having the micro-nano bubble pressurization, dissolution, concentration and reinforcement function capable of executing the closed nano bubble washing process.

In addition, in another embodiment of the present invention, a washing method using an effective dissolving and concentrating technology of closed type nanobubbles, which is applicable to a nanobubble pressurizing dissolving and concentrating process, includes: a micro-nano bubble pretreatment step of supplying cleaning water or rinsing water to the closed washing outer tank to generate and dissolve micro-nano bubbles until the outer tank is full of water, so as to use the oxidative decomposition force of the micro-nano bubbles; a nano-bubble post-treatment step of converting the washing outer tank into a pressure-tight type after the washing outer tank is filled with water, and performing one of a work of treating the micro-nano bubbles at a temperature of or above room temperature and a predetermined pressure or a work of continuously generating the micro-nano bubbles at a temperature of or below room temperature and a predetermined pressure using an electrolyte including a surfactant or an inorganic salt as a catalyst to convert the nano-bubbles and dissolved oxygen, which are increased in number, into nano-bubble oxygen active water in order to generate high-concentration micro-nano bubbles and to improve the solubility of the micro-nano bubbles as gas for the washing water or rinsing water subjected to the micro-nano-bubble pre-treatment step; a reaction step of nano bubble oxygen active water, under the same temperature and pressure conditions, the micro-nano bubble post-treatment step is finished and the nano bubble oxygen active water is converted into cleaning water or rinsing water of the nano bubble oxygen active water, and the cleaning water or the rinsing water is stored for a specified time, so that the reaction time with the washed objects is given; after the reaction of the nano bubble oxygen active water is finished and the pressurization and sealing state of the washing outer tank is released, executing common washing; and draining water after washing is finished.

The micro-nano bubble pressurizing, dissolving and concentrating process has a micro-nano bubble dissolving and concentrating basic stroke which enables a closed washing outer tank to reach a specified pressure and maintains a repeated circulation process for a specified time, and also comprises a micro-nano bubble dissolving and concentrating promotion stroke, wherein the micro-nano bubble dissolving and concentrating promotion stroke refers to that under the condition that the washing power of the nano-bubble oxygen active water is still insufficient after the basic stroke is finished, the pressure is reduced by discharging the specified pressure, and then the nano-bubble generating and circulating system is operated again, so that the micro-nano bubble dissolving and concentrating process is continuously and repeatedly carried out, and the washing and sterilizing power can be enhanced to the required level.

As described above, the washing method of the open type nano bubble washing process is improved to be standardized to sequentially perform the nano bubble pre-treatment step, the micro nano bubble post-treatment step, the reaction step of nano bubble oxygen activated water, the general washing step, and the water discharge step, and is applied to the open type washing system, and thus may be referred to as an open type nano bubble washing process or a nano bubble washing process.

Hereinafter, a washing method of a washing apparatus for performing the closed type nano bubble washing process will be described in detail with reference to still another embodiment.

In the washing device, when the washing mode is selected in a state that the washing articles are put into the washing tank and the cover of the closed type washing outer tank is closed, the washing process of passing through the washing, rinsing and dehydrating processes can be automatically realized within a preset time according to the control signal of the controller.

The micro-nano bubble pretreatment step comprises the following working procedures: opening a water supply valve provided in a water supply pipe to supply washing water or rinsing water for washing to the inside of the washing tank, discharging air corresponding to the volume of the supplied water through a vent valve when water supply is started, flowing the washing water or rinsing water supplied to the inside of the washing tank communicated with the inside of the outer washing tank through a plurality of through holes formed along the outer circumferential surface of the washing tank into the inside of the outer washing tank through the through holes in the inside of the washing tank, moving the washing water or rinsing water to a nano-bubble generation circulation system having a nano-bubble generation device placed outside the outer washing tank when the washing water or rinsing water fills up the inside of the outer tank and the washing tank at about 1/2 having a predetermined height, and repeatedly treating the supplied washing water by a nano-bubble process for a predetermined number of times or more so that the nano-bubble generation circulation system performs nano-bubble generation treatment together with oxygen in the air at one time, the generated nano bubbles are mixed and dissolved in the dissolving part, and then the nano bubble generating process is performed a plurality of times by circulating the washing water or the rinsing water, and when the washing water or the rinsing water is filled to a predetermined height in the outer tub and the washing tub, the water supply valve is closed, and the excessive water supply is finished.

The micro-nano bubble post-processing step includes a step of performing micro-nano bubble pressurization, dissolution and concentration, wherein the step of performing micro-nano bubble pressurization, dissolution and concentration refers to a step of ending the operation of the nano bubble generation circulation system after the washing water or the rinsing water is converted into the nano bubble oxygen active water with high concentration of dissolved oxygen and nano bubbles above a specified level expressing the washing and sterilizing functions is converted into the nano bubble oxygen active water with high concentration of dissolved oxygen and nano bubbles by increasing the volume and the pressure of the washing water in the pressure-resistant closed washing outer tank and gradually increasing the gas solubility if the washing outer tank of the washing machine is pressurized along with the end of water supply and the nano bubble generation device is continuously operated at normal temperature or lower than the normal temperature to repeatedly circulate the washing water or the rinsing water.

The reaction step of the nano bubble oxygen activity comprises the following working procedures: the washing water transformed into nano-bubble oxygen active water in a specified time under a specified temperature and pressure condition expresses the washing and sterilizing functions of the washing water and plays a washing role. When the reaction step of the nano-bubble oxygen activated water is finished, the nano-bubble generating device receives a control signal of the controller, and releases the pressurized and sealed state of the inside of the sealed washing outer tank.

Next, as a normal washing step, a stirring washing action is performed to exert a washing function based on the rotational force of the washing blade and the frictional force between the inner peripheral edge of the washing tub, and then, as a water discharge step, when the washing action as required is completed, a water discharge valve provided in a water discharge pipe is opened to discharge the nano bubble oxygen activated water used in the closed washing outer tub, the washing tub, and the nano bubble generation circulation system to the outside of the washing apparatus through the water discharge pipe.

In the washing method using the effective dissolution and concentration technique of the closed nano bubbles, a predetermined amount of an electrolyte such as a surfactant or an inorganic salt may be added as a catalyst for generating more micro-nano bubbles when water is supplied.

According to still another embodiment of the present invention, the washing method using the effective dissolution concentration technique of open or closed type nanobubbles may be applied to a 'pure nanobubble washing method' in which only a nanobubble washing process is applied in the first washing and the main washing and the first rinsing and the main rinsing of the rinsing stroke, and the nanobubble washing process is applied to the first washing of the washing stroke and mixed by applying a chemical detergent washing method to the main washing, and a 'hybrid nanobubble washing scheme' in which the nanobubble washing process is applied to the rinsing stroke, thereby providing a novel and effective washing method.

The pure nanometer bubble washing method is a mode of only applying nanometer bubble cleaning treatment to the whole washing process, and the whole washing process comprises a washing process including first cleaning and main cleaning, a rinsing process including first rinsing and main rinsing and a dewatering process.

The first cleaning executes nano bubble cleaning processing, the nano bubble cleaning processing sequentially executes a micro-nano bubble pretreatment step, a micro-nano bubble post-treatment step, a nano bubble oxygen active water reaction step, a common washing step and a water drainage step, the main cleaning executes a nano bubble cleaning stroke, the nano bubble cleaning stroke sequentially executes the micro-nano bubble pretreatment step, the micro-nano bubble post-treatment step, the nano bubble oxygen active water reaction step, the common washing step and a water drainage step, new rinsing water is supplied to execute a rinsing stroke after the main cleaning, in the rinsing stroke, a series of processes same as the washing stroke are sequentially executed in the rinsing time except for the water drainage and the rinsing stroke in the rinsing stroke, the rinsing stroke is executed for a short time together with the water drainage, and therefore, the rinsing is repeatedly executed for a plurality of times, that is, the nano bubble rinsing process is completed by the nano bubble pre-treatment process, the nano bubble post-treatment process, the nano bubble oxygen active water reaction process, the general washing process, and the water discharge process, and then, after the rinsing process is completed, the washing tub and the washing blades are rotated at a high speed as the final dehydration process is performed, the laundry in the washing tub moves to the outside by the centrifugal force, the contained water is discharged to the outside of the washing apparatus through the through hole of the washing tub, and is discharged to the outside of the washing apparatus through the water discharge valve and the water discharge pipe provided at the lower portion of the outside tub, and if the dehydration process is performed for a set time and the dehydration is completed, the operation of the washing apparatus is completely stopped, thereby completing the pure nano bubble washing.

This completes the open-type or closed-type pure nanobubble washing method to which the standard nanobubble washing process is applied.

In the hybrid nano bubble washing method, the first washing in the washing process is a washing method to which a nano bubble washing process is applied, the main washing is a mixed washing to which a conventional chemical detergent washing method is applied, and the first rinsing and the main rinsing in the rinsing process are a mixed washing method to which a nano bubble washing process is applied, and then a dehydration process.

In the washing process, a micro-nano bubble pretreatment step, a micro-nano bubble post-treatment step, a reaction step of nano-bubble oxygen active water, a general washing step and a water discharge step of nano-bubble cleaning treatment are sequentially performed as a first cleaning, then, a water supply and washing input step of a washing method using a chemical detergent, a stirring and washing step using a rotating force of a washing blade and a friction force with a washing tank, and a water discharge step are sequentially performed as a main cleaning to finish a mixed cleaning process, then, in a rinsing process performed by supplying new rinsing water, the rinsing process sequentially performs the micro-nano bubble cleaning treatment micro-nano bubble pretreatment step, the nano-bubble post-treatment step, the reaction step of nano-bubble oxygen active water, the general washing step and the water discharge step in the first rinsing and the main rinsing respectively to finish the nano-bubble rinsing process, then, after the rinsing stroke is completely finished, the washing tub and the washing blades are rotated at a high speed as the final dehydration stroke is performed, the laundry in the washing tub moves outward by centrifugal force, and the contained water is discharged to the outer tub through the through hole of the washing tub and is discharged to the outside of the washing apparatus through a drain valve and a drain pipe provided at the lower portion of the outer tub.

This completes the open-type or closed-type hybrid nanobubble cleaning method in which the standard nanobubble cleaning process and the chemical detergent cleaning method are mixed.

On the other hand, in the above-mentioned "pure nanobubble washing method", only the nanobubble washing process in the overall washing process is repeatedly performed, and in the above-mentioned "hybrid nanobubble washing method", the nanobubble washing process and the chemical detergent washing process in the overall washing process are used in combination, so that the number of times of use of the nanobubble washing process can be selectively applied according to the washing or washing algorithm based on the purpose of washing, the number of kinds of laundry, and the kind and degree of contaminants, and the specific steps of using the nanobubble washing process can be flexibly changed according to the dissolved oxygen and the solubility concentration of nanobubbles.

As described above, the present invention provides a sanitary washing environment having washing and sterilizing functions by providing a circulation type nano bubble generation system to activate washing water and rinsing water into nano bubble oxygen activated water, and also provides a micro-nano bubble dissolution and concentration process to perform washing even if a chemical detergent, a catalyst, or the like is used as an auxiliary detergent or a chemical detergent is not used at all, and wear and fuzz of clothes are reduced by performing washing by a reaction of nano bubble oxygen activated water, unlike a conventional washing method using a water flow and a washing tub together with a chemical detergent, thereby minimizing side effects after completion of washing, and particularly, it can be used for special washing such as treatment of children or atopic dermatitis since there is no detergent left.

Furthermore, the present invention can provide a washing machine with additional water treatment technology and a circulation type nano bubble generating device without changing the structure of the existing washing machine to a great extent, seal the inside of the washing outer tank, and apply pressure to the inside of the washing outer tank, so that the present invention is easy to be put into practical use, reduces the amount of electricity and water used together with the reduction of the washing time, and can implement green washing innovation of washing with less detergent, and further washing without detergent, thereby realizing green innovation of preventing misuse of chemical detergent, inhibiting water use, preventing environmental pollution, reducing greenhouse gas and energy, reducing cost, etc.

The above-described effects are applied to a washing apparatus of a vortex type or a drum type, etc., and thus, the micro-nano bubble processing method is applicable to not only home-use and enterprise-use washing machines, but also large-scale washing plants, and further, dyeing plants, etc., and thus, the micro-nano bubble processing method can be widely applied to various industrial fields.

Drawings

A brief description of the drawings showing exemplary embodiments for the purpose of promoting an understanding of the principles of the invention follows.

Fig. 1 is a schematic sectional view of an embodiment of a conventional general washing machine.

Fig. 2 is a schematic sectional view of a washing apparatus adapted to a washing method using physicochemical characteristics of nano bubbles, which is adapted to an eddy current type washing machine.

Fig. 3 is a schematic cross-sectional view of a washing apparatus to which a washing method using physicochemical characteristics of nano bubbles is applied, which is applied to a drum-type washing machine.

Fig. 4 is a schematic sectional view of a washing apparatus using an effective dissolution and concentration technique of open type nano bubbles, which is shown by an open washing outer tank according to an embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of a washing apparatus using an effective dissolution and concentration technique of open nano-bubbles according to an embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of a washing apparatus using an effective dissolution and concentration technique of closed nano-bubbles, illustrating a closed structure according to still another embodiment of the present invention.

Fig. 7A and 7B are schematic cross-sectional views of a lid for closing and opening a washing outer tank of a washing apparatus using a sealed nanobubble effective dissolution and concentration technique according to still another embodiment of the present invention.

Fig. 8A and 8B are schematic cross-sectional views respectively illustrating a driving structure of a washing apparatus using an effective dissolution concentration technique of open type nano bubbles according to the principle of another embodiment of the present invention.

Fig. 9A and 9B are schematic cross-sectional views illustrating driving structures of a washing apparatus using an effective dissolution concentration technique of closed type nano bubbles, respectively, according to the principle of still another embodiment of the present invention.

Detailed Description

Hereinafter, the washing apparatus using the effective dissolution and concentration technique of open-type or closed-type nanobubbles according to the present invention is an apparatus for providing a dissolution and concentration process of micro-nanobubbles to a washing apparatus using physicochemical characteristics of nanobubbles, and the present invention has a similar structure to that of the washing apparatus using physicochemical characteristics of nanobubbles of the applicant cited as the prior art, and therefore, the same components will be briefly described and the same reference numerals will be given to the same parts in the drawings, thereby describing an exemplary embodiment in detail with reference to the drawings.

Fig. 4 shows a schematic structure of an embodiment of a washing apparatus using an efficient nanobubble dissolution concentration technique, which is an open type and performs a nanobubble washing process, according to an embodiment of the present invention.

The washing apparatus using the effective dissolution concentration technique of the open type nano bubbles includes: an open-type washing outer tub 2 for containing washing water or rinsing water; a washing tank 3 as a washing and dewatering tank; a washing blade 4 which is provided in the washing tub 3 so as to be capable of rotating, and which generates turbulence while periodically rotating forward and backward; a driving mechanism including a clutch 5 and a driving motor 6, wherein the clutch 5 is fixed on the outer bottom surface of the open type washing outer tank 2, and selectively rotates the washing tank 3 and the washing blade 4 according to each washing stroke, and the driving motor 6 is used for driving the clutch 5; and a nanobubble generation circulation system NB for receiving the washing water or the rinsing water from the outer tank to perform a nanobubble circulation process.

The nanobubble generation circulation system NB includes: a circulation pipe 30 receiving and circulating the washing water or the rinsing water; a temperature control device 100 that performs a cooling or heating function to make the temperature of the circulating liquid reach a specific temperature; a nano bubble generating device 40 for receiving the cleaning water or rinsing water circulated after temperature adjustment and performing micro-nano bubble treatment on the cleaning water and the rinsing water; and a dissolving unit 90 for receiving the washing water or the rinsing water treated with the micro-nano bubbles and dissolving and concentrating the washing water or the rinsing water, so that the nano-bubble generation circulation system performs a nano-bubble generation and dissolution function of mixing the washing water or the rinsing water with oxygen in the air to generate micro-nano bubbles and dissolving the micro-nano bubbles and the nano bubbles.

As shown in fig. 5, the nano-bubble generating device 40 includes: a pressure circulating pump 50 for circulating the washing water or the rinsing water under pressure at a predetermined pressure or higher; a pump driving motor 60 for driving the pump; a mixing part 70 for mixing the washing water or rinsing water pressurized by the pump with the inflow air; and an air supply unit 80 for supplying or sucking compressed air containing oxygen, thereby mixing the cleaning water or rinsing water pressurized to a predetermined pressure or more with the air pressurized to a predetermined pressure or more, mixing the water with the air, and generating micro-nano bubbles (10 μm to several tens of nm) and nano bubbles (several hundreds of nm or less) as very small bubbles by the bubbles, so that the nano bubble generation device is connected to and integrated with the dissolution part.

The temperature control device 100 and the dissolving part 90 may be used or omitted depending on the kind of laundry and the washing capacity.

As described above, the washing apparatus using the effective dissolution and concentration technique of the open type nano bubbles is provided with the temperature control function so that the nano bubble generator 40 can be operated alone and washed when operating, and can be washed at normal temperature or at a temperature lower than the normal temperature, thereby allowing the nano bubbles and dissolved oxygen generated and contained in the washing water or the rinsing water to be more effectively dissolved and concentrated without being floated on the surface of the water.

In addition, the washing apparatus using the effective dissolution concentration technique of the open nano bubbles as described above may also include the following methods: in order to increase the generation of micro-nano bubbles and to improve the efficiency of dissolution and concentration, water is supplied, and a predetermined amount of an electrolyte such as a surfactant or an inorganic salt is added as a catalyst.

That is, the washing apparatus using the effective dissolution and concentration technique of the open nanobubbles according to the embodiment of the present invention changes the washing process and the washing temperature in the open outer washing tank 2 and the washing tank 3, thereby solving the problem of the complex washing accompanying the physical washing and improving the washing effectiveness.

The washing method using the effective dissolution concentration technique of the open nanobubbles according to an embodiment of the present invention having the above-described structure includes: a micro-nano bubble pretreatment step of supplying washing water or rinsing water to the open type washing outer tank 2 to generate and dissolve micro-nano bubbles until the outer tank is full of water, thereby using the oxidative decomposition force of the micro-nano bubbles; a micro-nano bubble post-treatment step, wherein after the open type washing outer tank is filled with water, one of the work of continuously operating the nano bubble generating device and continuously generating micro-nano bubbles in cleaning water or rinsing water at normal temperature or below, or continuously generating the micro-nano bubbles by using electrolytes such as a surfactant or inorganic salts as a catalyst, so that the nano bubbles and dissolved oxygen are effectively dissolved and concentrated, and then the nano bubbles and the dissolved oxygen are converted into nano bubble oxygen active water; a reaction step of the nano bubble oxygen activated water, after finishing the post-treatment, giving time for reacting with the washings at a predetermined time and the same temperature to the washing water or the rinsing water stored in the washing water or the rinsing water converted into the nano bubble oxygen activated water; a step of executing a general washing function after finishing the reaction of the nano bubble oxygen active water; and draining after washing.

Therefore, the standard open type nano bubble washing process is finished after the processes of the micro-nano bubble pretreatment step, the micro-nano bubble post-treatment step, the nano bubble oxygen active water reaction step, the common washing step and the water drainage step.

On the other hand, according to still another embodiment of the present invention, as a basic method for optimizing the concentration of dissolved nano-bubbles and dissolved oxygen in the washing water or the rinsing water in a short time, a micro-nano bubble pressurized dissolution concentration process is applied.

The micro-nano bubble pressurized solvent concentration process prolongs the repeated circulation treatment in each unit time of the micro-nano bubbles, thereby generating the micro-nano bubbles in the washing water, and in order to dissolve and concentrate more air in each unit volume, the micro-nano bubble treatment is performed at normal temperature or below, thereby increasing the gas solubility in the washing system, and as a result, the dissolved oxygen and the nano bubbles with high concentration are dissolved and concentrated, thereby improving the breaking efficiency of the nano bubbles, and thereby enhancing the washing power and the bactericidal power based on the expression of physicochemical characteristics in a required time.

The micro-nano bubble pressurizing, dissolving and concentrating process has a basic process of micro-nano bubble dissolving and concentrating in a repeated circulation process of enabling the top space of the pressure-resistant and sealed washing outer tank to reach a specified pressure and maintaining for a specified time, and has a promotion process of repeating the micro-nano bubble dissolving and concentrating process by discharging specific pressure to reduce pressure and operating the nano bubble generating and circulating system NB again under the condition that the washing power of nano bubble oxygen active water is insufficient even after the basic process is finished, so that the washing and sterilizing power can be strengthened finally.

Fig. 6 illustrates a washing apparatus of an effective nanobubble dissolution and concentration technique, which is constructed in a hermetic type and performs a nanobubble washing process according to an embodiment of the present invention to which the above-described nanobubble pressurization dissolution and concentration process is applied.

The washing apparatus using the efficient dissolving and concentrating technique of the closed type nano bubbles is similar in mechanism to the washing apparatus using the efficient dissolving and concentrating technique of the nano bubbles, and the washing and dehydrating works are performed in the same manner. However, in order to provide a function of greatly increasing the solubility of gas, a peripheral device required for the open outer washing tank for containing washing water or rinsing water is attached to the outer washing tank so as to form a pressure-resistant closed outer washing tank formed by a pressure tank receiving a predetermined pressure, or a device improved so as to be capable of receiving a pressure is used.

That is, the washing apparatus using the effective dissolution and concentration technique of the closed type nanobubbles according to the embodiment of the present invention includes: a closed outer washing tank 20 formed of a pressure tank capable of receiving a predetermined pressure therein and containing washing water or rinsing water; a washing tank 3 as a washing and dewatering tank; a washing blade 4 which is provided in the washing tub 3 so as to be capable of rotating, and which generates turbulence while periodically rotating forward and backward; a driving mechanism including a clutch 5 and a driving motor 6, wherein the clutch 5 is fixed on the outer bottom surface of the closed washing outer tank 20, and selectively rotates the washing tank 3 and the washing blade 4 according to each washing stroke, and the driving motor 6 is used for driving the clutch 5; and a nanobubble generation circulation system NB for receiving the washing water or the rinsing water from the outer tank to perform a nanobubble circulation process.

The nanobubble generation circulation system NB includes: a circulation pipe 30 for circulating the washing water or the rinsing water after receiving the washing water or the rinsing water; a temperature control device 100 that performs a cooling or heating function to make the temperature of the circulating liquid reach a specific temperature; a nano bubble generating device 40 for receiving the cleaning water or rinsing water circulated after the temperature is adjusted, and performing micro-nano bubble processing on the cleaning water and the rinsing water; and a dissolving part 90 for receiving the washing water or rinsing water treated by the micro-nano bubbles and dissolving and concentrating the washing water or rinsing water.

The temperature control device 100 and the dissolving part 90 may be used or omitted depending on the type of laundry and the washing capacity.

The nano bubble generating device 40 includes: a pressure circulating pump 50 for circulating the washing water or the rinsing water under pressure at a predetermined pressure or higher; a pump driving motor 60 for driving the pump; a mixing part 70 for mixing the washing water or rinsing water pressurized by the pump with the inflow air; and an air supply unit 80 for supplying or self-sucking compressed air containing oxygen, thereby mixing the air pressurized to a predetermined pressure or more with the washing water or rinsing water pressurized to a predetermined pressure or more and flowing, mixing them, generating micro-nano bubbles (10 μm to several tens of nm) and nano bubbles (several hundreds of nm or less) as very small bubbles, and dissolving the micro-nano bubbles and nano bubbles, thereby having a micro-nano bubble dissolution and concentration enhancing function of performing a closed-type nano bubble washing process.

As shown in fig. 6, the washing apparatus using the effective dissolution and concentration technique of the closed nano bubbles includes: a pressure-resistant, sealed washing outer tub 20 formed of a single type of pressure tub so as to be able to withstand a predetermined pressure; the outer tub sealing type lid 24 is used to seal the upper part of the sealing type washing outer tub 20, and the sealing type washing outer tub 20 has a function of dissolving and concentrating more nano bubbles and dissolved oxygen by greatly increasing the solubility of the micro nano bubbles/nano bubbles as gas by sealing the pressure tub and the above system in addition to supplying or discharging washing water or rinsing water by attaching the manometer 27, the vent valve 28, and the muffler 29 coupled to the vent valve as an auxiliary means functioning as a pressure tub.

The closed type outer washing tank 20 is configured to easily close the open type outer washing tank 2 and an upper portion of the open type outer washing tank 2, and has a structure in which washing water or rinsing water circulates by forming one or more drawing nozzles 21 at a side surface of the closed type outer washing tank 20 and forming a drawing nozzle 22 at a lower portion of the closed type outer washing tank 20.

As shown in fig. 7A and 7B, a sealing member 25 for maintaining inner airtightness is attached to an outer tub sealing type lid 24 for sealing an upper portion of the sealed type washing outer tub 20, a hinge 23 is formed at one side of the lid for opening or closing the lid, and one or more clamps 26 are attached to the other side of the lid, thereby maintaining airtightness even when the lid is closed. The air vent valve 28 as an auxiliary device performs an air inlet and outlet function when water supply or water discharge is performed, and functions to maintain or adjust pressure when a pressure-tight type is converted, the muffler 29 coupled to the air vent valve functions to minimize noise generated when compressed air is discharged for pressure adjustment, the pressure gauge 27 displays the internal pressure of the airtight washing tub 20 and functions to adjust pressure in conjunction with the air vent valve when a specific pressure is exceeded, and the pressure gauge may be selectively used when a high pressure is required due to a large washing capacity without using the pressure gauge in a low-pressure home washing machine.

In addition to the pressure-resistant structure and material that can withstand a predetermined pressure, the closed washing outer tub 20 and the closed cover 24 of the outer tub are made of a pressure-resistant structure and material that can withstand a predetermined pressure, and the nanobubble generation circulation system NB is also made of a pressure-resistant structure and material that can withstand a predetermined pressure, and the pressure gauge 27, the vent valve 28, and the muffler 29, which are auxiliary devices, can be selectively attached to the upper portion of the closed washing outer tub cover or the upper portion of the side surface thereof depending on the washing environment and the device structure.

The washing method using the closed nano-bubble effective dissolving and concentrating technology, which is suitable for the continuous circulation type micro-nano bubble pressurizing dissolving and concentrating process and is formed in the way, executes a micro-nano bubble pretreatment step, a micro-nano bubble post-treatment step, a micro-nano bubble oxygen active water reaction step, a common washing function execution step and a drainage step. The above steps are explained in detail as follows.

The micro-nano bubble pressurized dissolution and concentration process for understanding the invention is described as follows: the above process is a method for improving gas solubility by dissolving more air as a gas in water, and the above process seals and pressurizes a washing system, and repeatedly pressurizes micro-nano bubbles at a temperature at or below room temperature and a specific pressure higher than atmospheric pressure to improve the solubility of the micro-nano bubbles as a gas, and converts cleaning water and rinse water into strong nano bubble oxygen activated water containing dissolved oxygen and nano bubbles at a higher concentration, which are dissolved and concentrated, in a liquid, thereby expressing excellent physicochemical characteristics of the dissolved oxygen and the nano bubbles.

In the micro-nano bubble pressurized dissolution and concentration process, in order to provide a function of increasing the solubility of gas in which more air is dissolved in the liquid to obtain high-concentration dissolved oxygen and nano bubbles, the "henry's law" based on the pressurized washing of the outer washing tank in the closed washing machine body is used, and when the temperature is low, the solubility of gas increases as the pressure is higher. According to the theory, the temperature of the cleaning water and the rinsing water contained in the sealed washing outer tank is maintained at normal temperature or lower than the normal temperature, and the cleaning water and the rinsing water are converted into the pressure tank of the sealed washing outer tank, so that the micro-nano bubbles are repeatedly and circularly pressurized under the specified pressure, the gas solubility is increased, and the dissolving and concentrating effects of the micro-nano bubbles are more effectively performed.

In connection with this, the micro-nano bubble/nano bubble dissolution/concentration Condition according to another embodiment of the present invention is a balance Condition (equivalent Condition) indicating a headspace Pressure of the closed type washing outer tank and a Liquid temperature, and the micro-nano bubble/nano bubble dissolution amount as the gas is determined in a range of 0.5 to 3.0Volume in consideration of a Pressure in a range of-2 to 25 ℃ and a water injection Pressure (misting Pressure) + a Liquid Head Pressure (Liquid Head Pressure) + an Equilibrium Pressure (equivalent Pressure).

Therefore, when the micro-nano bubbles/nano bubbles are treated on the washing water or the rinsing water, the pressure of the pressure-resistant closed washing outer tank, the temperature of the liquid, the dissolving and concentrating stroke of the micro-nano bubbles and the cycle period of the nano bubble generating and circulating system NB can be arbitrarily adjusted according to the concentration of the nano bubbles and dissolved oxygen, the type and quantity of the washing objects and the type and degree of pollution, and the method is applicable to the operation method of the washing device.

Hereinafter, the operation of the washing apparatus using the effective dissolution and concentration technique of the closed type nanobubbles will be described in detail as follows: if the cover of the outer washing tank is closed after water is supplied to the washing tank and the washing mode is selected after power is applied, the process of passing through the washing, rinsing and dehydrating strokes is automatically started within a specified time according to the control signal of the controller.

In the micro-nano bubble pretreatment step, which is the first step of the closed nano bubble cleaning process, when water supply is started, air corresponding to the volume of the supplied water is discharged through the vent valve 28, and water is stored in the closed washing outer tank 20. When the water is filled to about 1/2 at a predetermined height in the sealed washing outer tank 20, the nanobubble generation circulation system NB provided outside the washing outer tank is started to operate, and the washing water or the rinsing water is adjusted to a constant temperature by the temperature adjusting device 100 or the washing water is transferred to the nanobubble generation device 40, so that the nanobubbles are generated by the nanobubble treatment together with the oxygen in the air for the first time, and the dissolved water is mixed and dissolved in the dissolving part 90, and then the water is transferred to the sealed washing device 20 again. In the nanobubble generation circulation system NB, the cleaning water or the rinse water descends from the closed washing outer tank 20 to the circulation pipe 30, passes through the temperature control device 100, is supplied to the nanobubble generation device 40 under pressure, receives the compressed air containing oxygen from the air supply means 80, and mixes the air and the water in an appropriate manner to generate nanobubbles in the nanobubble generation device 40, and dissolves the air in the dissolution part 90, thereby activating the cleaning water or the rinse water into nanobubble oxygen-activated water. The activated liquid is again introduced into the closed-type washing outer tub 20 through the circulation pipe 30, and the circulation is continuously or limitedly repeated.

Next, as the micro-nano bubble post-treatment step, when the pre-treated washing water or rinsing water is filled to a predetermined height in the closed type washing outer tank 20, the water supply valve is closed to end the excessive water supply, and then the vent valve 28 is closed to stop the flow of air, so that the washing apparatus is switched to a closed type system having an internal pressure. The pretreated washing water or rinsing water contained in the closed type washing outer tank 20 converted into the closed type continues to generate micro-nano bubbles or nano bubbles by the nano bubble generation circulation system NB until a desired level is reached, and the micro-nano bubbles or nano bubbles are accumulated, dissolved and concentrated by the repeated circulation process of mixing and dissolving in the dissolving part and then being transferred to the closed type washing outer tank 20 again. When the washing apparatus is switched to the closed state and the nano-bubble generation circulation system NB is operated to repeatedly circulate the washing water or the rinsing water, the nano-bubbles are generated and accumulated, the volume of the washing water or the rinsing water containing the bubbles gradually expands, and if the above phenomenon continues, the pressure in the closed washing system gradually increases. When the pressure in the closed-type washing outer tub 20 becomes high, the washing water or the rinsing water is repeatedly circulated and pressurized to a predetermined level or more, and the circulation is continued until the supporting pressure of the head space reaches the closed-type washing outer tub 20. In the closed outer washing tank 20, the solubility of the gas in the washing water or rinsing water at room temperature or at a temperature adjusted to room temperature or lower by the temperature adjusting device 100 increases during the repeated cycles of the transfer of the supporting pressure as the headspace of the closed outer washing tank 20, that is, during the cycles of the pressurized state at a predetermined level of low temperature and high pressure, the phenomenon of the micro-nano bubbles or nano bubbles breaking and dissolving accelerates geometrically, thereby rapidly increasing the dissolved oxygen concentration, and the physicochemical properties play a greater role when the micro-nano bubbles break, so that the harmful organic substances which are difficult to decompose are decomposed, and the oxidative decomposition force of the bactericidal microorganisms becomes stronger. On the other hand, stabilized nanobubbles which are not completely broken and disappear are accumulated, concentrated and remained, and the washing effect is positively influenced by the gradual and continuous breaking action.

As described above, when the pressure of the headspace of the outer washing tub 20 is maintained at the supporting pressure for a predetermined time, the nanobubbles and the dissolved oxygen are sufficiently dissolved and concentrated in the washing water or the rinsing water, the washing water and the rinsing water are converted into nano-bubble oxygen activated water of a target degree, and the basic process of the dissolution and concentration of the nano-bubble generation circulation system is stopped, and, even after the basic stroke, when the washing power of the nano bubble oxygen active water is insufficient, after the vent valve 28 and the muffler 29 coupled to the vent valve discharge the predetermined pressure of the headspace of the sealed washing outer tub 20 and reduce the pressure, the micro-nano bubble dissolving and concentrating process is continuously repeated by operating the nano bubble generating circulation system NB again, so that the promotion stroke of the washing force and the sterilizing force can be strengthened.

On the other hand, in order to improve the formation of micro-nano bubbles and further improve the efficiency of dissolution and concentration together with the above-mentioned washing method, there may be also included a method of adding an electrolyte such as a surfactant or an inorganic salt as a catalyst in the course of supplying water. Thus finishing the micro-nano bubble post-treatment step for dissolving and concentrating the effective micro-nano bubbles.

Next, as the reaction step of the nano bubble oxygen activated water, as described above, when the post-treatment step is completed, the nano bubble generation circulation system is stopped, the washing water or the rinsing water stored in the closed washing outer tub 20 and converted into the nano bubble oxygen activated water is reacted with the place where the washing is contacted at a specific temperature and pressure for a predetermined time, thereby performing a washing action of decomposing contaminated dirt in the washing and sterilizing microorganisms such as bacteria, and then, a sufficient reaction time is given to perform a desired washing action, and when the reaction of the nano bubble oxygen activated water is completed, the nano bubble generation apparatus 40 stops operating after receiving a control signal of the controller, and the vent valve 28 is opened to pressurize the closed washing outer tub 20 and is in a contact closed state.

Next, as a normal washing step, a washing function based on the rotational force of the washing blade 4 and the frictional force with the inner peripheral portion of the washing tub 3 is combined to perform the agitation washing action, and then, as a water discharge step, when the required washing action is finished, the water discharge valve 11 provided in the water discharge pipe is opened to discharge the nano bubble oxygen activated water for washing the closed type washing outer tub 20, the washing tub 3, and the nano bubble generation circulation system NB to the outside of the washing apparatus through the water discharge pipe 15.

Further, in the washing method using the effective dissolution and concentration technique of the closed nano bubbles, an electrolyte using a predetermined amount of a surfactant, an inorganic salt, or the like may be added as a catalyst for generating more micro nano bubbles when water is supplied.

Therefore, the standard closed type nano bubble washing process is finished, wherein the standard closed type nano bubble washing process is executed after the micro-nano bubble pretreatment step, the micro-nano bubble post-treatment step, the nano bubble oxygen activated water reaction step, the common washing step and the number discharge step.

According to still another embodiment of the present invention, the washing method using the effective dissolution concentration technique of open or closed type nanobubbles may be applied to a 'pure nanobubble washing method' in which only a nanobubble washing process is applied to the first washing and the first rinsing and the main rinsing of the main washing and rinsing stroke, and the first washing of the washing stroke is applied to the nanobubble washing process and the main washing is mixed by a chemical detergent washing method, and the rinsing stroke is applied to a 'hybrid nanobubble washing scheme' of the nanobubble washing process, thereby providing a novel and effective washing method.

The pure nanometer bubble washing method is a mode of only applying nanometer bubble cleaning treatment to the whole washing process, and the whole washing process comprises a washing process including first cleaning and main cleaning, a rinsing process including first rinsing and main rinsing and a dewatering process.

In the washing process, nano bubble cleaning treatment is performed by cleaning for the first time, the nano bubble cleaning treatment sequentially performs a micro-nano bubble pretreatment step, a micro-nano bubble post-treatment step, a nano bubble oxygen active water reaction step, a common washing step and a water drainage step, the nano bubble cleaning process is mainly performed by cleaning, the micro-nano bubble pretreatment step, the micro-nano bubble post-treatment step, the nano bubble oxygen active water reaction step, the common washing step and the water drainage step are sequentially performed by the nano bubble cleaning process, a rinsing process performed by supplying new rinsing water is performed between rinsing and rinsing of rinsing and main rinsing for the first time and is performed for a short time together with water drainage, and new rinsing water is supplied, so that in the process of repeatedly performing rinsing for a plurality of times, a series of processes same as the washing process are sequentially performed within the rinsing time except for water drainage and dehydration, that is, the nano bubble rinsing process is completed by the nano bubble pre-treatment process, the nano bubble post-treatment process, the nano bubble oxygen active water reaction process, the normal washing process, and the water discharge process of the nano bubble cleaning process, and then, after the rinsing process is completely completed, the washing tub and the washing blade are rotated at a high speed as the final dehydration process is performed, the laundry in the washing tub moves to the outside by the centrifugal force, the contained water is discharged to the outer tub through the through hole of the washing tub, and is discharged to the outside of the washing apparatus through the water discharge valve and the water discharge pipe provided at the lower portion of the outer tub, and if the dehydration process is performed for a set time and the dehydration is completed, the operation of the washing apparatus is completely stopped, thereby completing the pure nano bubble washing.

This completes the open-type or closed-type pure nanobubble washing method to which the standard nanobubble washing process is applied.

In the hybrid nano bubble washing method, the first washing in the washing process is a washing method to which a nano bubble washing process is applied, the main washing is a mixed washing to which a conventional chemical detergent washing method is applied, and the first rinsing and the main rinsing in the rinsing process are a mixed washing method to which a nano bubble washing process is applied, and then a dehydration process.

In the washing process, a micro-nano bubble pretreatment step, a micro-nano bubble post-treatment step, a reaction step of nano-bubble oxygen active water, a general washing step and a water discharge step of nano-bubble cleaning treatment are sequentially performed as a first cleaning, then, a water supply and washing input step of a washing method using a chemical detergent, a stirring and washing step using a rotating force of a washing blade and a friction force with a washing tank, and a water discharge step are sequentially performed as a main cleaning to finish a mixed cleaning process, then, in a rinsing process performed by supplying new rinsing water, the rinsing process sequentially performs the micro-nano bubble cleaning treatment micro-nano bubble pretreatment step, the nano-bubble post-treatment step, the reaction step of nano-bubble oxygen active water, the general washing step and the water discharge step in the first rinsing and the main rinsing respectively to finish the nano-bubble rinsing process, then, after the rinsing stroke is completely finished, the washing tub and the washing blades are rotated at a high speed as the final dehydration stroke is performed, the laundry in the washing tub moves outward by centrifugal force, and the contained water is discharged to the outer tub through the through hole of the washing tub and is discharged to the outside of the washing apparatus through a drain valve and a drain pipe provided at the lower portion of the outer tub.

This completes the open-type or closed-type hybrid nanobubble cleaning method in which the standard nanobubble cleaning process and the chemical detergent cleaning method are mixed.

On the other hand, in the above-mentioned "pure nanobubble washing method", only the nanobubble washing process in the overall washing process is repeatedly performed, and in the above-mentioned "hybrid nanobubble washing method", the nanobubble washing process and the chemical detergent washing process in the overall washing process are used in combination, so that the number of times of use of the nanobubble washing process can be selectively applied according to the washing or washing algorithm based on the purpose of washing, the number of kinds of laundry, and the kind and degree of contaminants, and the specific steps of using the nanobubble washing process can be flexibly changed according to the dissolved oxygen and the solubility concentration of nanobubbles.

Among them, the physicochemical properties of oxygen nanobubbles of interest and nanobubble oxygen activated water containing high concentration of dissolved oxygen and nanobubbles as the result of the treatment of the oxygen nanobubbles are described in detail in Japanese patent application No. 10-1161477, and therefore, only the features thereof will be described briefly.

The characteristics of the nano bubble oxygen active water can be simply summarized to express powerful sterilization and washing power. That is, in the nano treatment in water in which bubbles are bonded, the surface tension of water is reduced by the small aggregation of water molecule clusters (clusters) due to countless collisions and damage impacts between water molecules and nano bubbles, and the penetration force of laundry or the like is improved, in the water of the bubble, the increase of the dissolved oxygen concentration and the increase of the contact surface with oxygen due to the nano-sized crushing, particularly, the instantaneous high heat, the instantaneous shock wave, the radical effect and the like of the energy emitted when the nano-bubble is crushed form a complex combination, therefore, the water treatment agent is easy to combine with a pollution source in water, so that through strong sterilization and oxidative decomposition force, the detergent composition has excellent effects on high-purity sterilization and disinfection of microorganisms, oxidative decomposition of hardly decomposable organic substances, and purification of water by discoloration, deodorization, and the like, and thus innovative washing and cleaning is realized.

Hereinafter, the structure of the nano-bubble washing system according to the present invention is improved by innovating the structure of the nano-bubble washing system, and the driving means, which is the power source of the open-type or closed-type nano-bubble washing device, and the nano-bubble generation circulation system NB are integrally connected, so that the manufacturing cost for simplifying the structure of the washing device is reduced together with the auxiliary function for efficiently dissolving and concentrating the nano-bubbles and dissolved oxygen.

In the nanobubble washing apparatus, there are two means for providing a driving force, one of which is, as shown in fig. 2, a driving force for rotating the washing tub 3 and the washing blades 4 by the driving motor 6 as a main driving means of the washing apparatus, and the other is, as shown in fig. 5, a driving force for pressurizing and circulating the washing water or the rinsing water at a predetermined pressure or more in the nanobubble generation apparatus 40 having the pump-driving motor 60 for driving the pressurizing and circulating pump 50 as a core means of the nanobubble generation circulation system NB.

As described above, the applications of the power transmitted by the drive motor 6 of the nano bubble washing apparatus and the pump drive motor 60 of the nano bubble generation apparatus 40 are different, but both functions and functions as the source of the driving force are the same, and therefore, the above-described two driving apparatuses are improved as follows.

As shown in fig. 8A and 8B, the interference-driven washing method of fig. 8A and the direct-driven washing method of fig. 8B using the washing apparatus of the effective dissolution and concentration technique of the open type nano bubbles can be applied, and as shown in fig. 9A and 9B, the interference-driven washing method of fig. 9A and the direct-driven washing method of fig. 9B using the washing apparatus of the effective dissolution and concentration technique of the closed type nano bubbles can be applied.

That is, the pump driving motor 60 may be omitted in the washing apparatus, only the pressurizing circulation pump 50 and the driving motor 6 may be directly connected and integrated, and the driving motor 6 may be operated by a driving force of the clutch to be converted into rotation of the washing blade 4 or the washing tub 3 by a normal power dividing function, and the nanobubble generation circulation system NB may be configured by changing to the clutch 110 for transmitting a new driving force so as to drive only the pressurizing circulation pump 50.

The nano-bubble generating device 40 having the above structure may be applied to various forms instead of the above structure according to purposes and uses.

In the nanobubble generator 40, the technique or process for treating the nanobubbles or nanobubbles is a simple and epoch-making method using fluid mechanics, and relates to a method of cutting and pulverizing bubbles into micron or smaller, even nano-level sizes in the process of mixing water with air or oxygen, and the above methods can be broadly classified into "air shear method", "pressurized dissolution method", "spiral flow method", "ultrasonic method", etc., and various methods can be used to develop and apply various types of nanobubble generators or nanobubble generators according to the application method, but the above structure is applicable to any method.

As described above, the open-type or closed-type nanobubble washing system to which the principle of the present invention is applied is a method of applying oxidative decomposition force based on physicochemical characteristics of nanobubbles, and the present invention is constituted by a continuous circulation and continuous decomposition/continuous sterilization system in which washing water or rinsing water is continuously and repeatedly circulated from an open-type washing outer tank 2 or a closed-type washing outer tank 20 to a nanobubble generation circulation system NB through a circulation pipe 30, and sterilization and oxidative decomposition are performed by nanobubble oxygen active water in which concentrated nanobubbles and dissolved oxygen are dissolved, whereby a sanitary and safe environment is established by blocking the generation and proliferation of bacteria in a washing apparatus as a method and an apparatus of washing laundry in a green state in which complete washing and sterilization of laundry are achieved, and is applicable to an eddy current type washing apparatus or a drum type washing apparatus, and thus, depending on washing capacity and washing amount, the washing machines are classified into household use, enterprise use, industrial use, and the like.

As described above, the embodiments are merely to illustrate the present invention in more detail, and the scope of the present invention is not limited to the above embodiments. Before, terms or words used in the present specification and the claimed invention should not be construed as limited to dictionary meanings, but should be construed as meanings and concepts conforming to the technical idea of the present invention on the basis of the principle that the inventor can appropriately define the concept of the terms for explaining the invention itself in the best way.

Therefore, the configuration shown in the drawings and the embodiments described in the present specification is only the most preferred embodiment of the present invention, and does not represent all the technical ideas of the present invention, and therefore it should be understood that there are many equivalent technical means and modifications that can replace the above-described embodiments from the viewpoint of the present application.

Claims (8)

1. A washing device using an effective dissolving and concentrating technique of closed micro-nano bubbles, comprising:

a closed outer washing tank which is hermetically pressurized so as to function as a pressure tank capable of withstanding a predetermined pressure and which contains washing water or rinsing water;

a washing tank as a washing/dehydrating tank;

a washing blade which is provided inside the washing tank so as to be capable of rotating, and generates a turbulent flow while periodically rotating forward and backward;

a driving mechanism including a clutch fixed to one side of an outer bottom surface of the closed washing outer tub to selectively rotate the washing tub and the washing blades according to each washing stroke, and a driving motor for driving the clutch; and

a micro-nano bubble generating and circulating system comprises a circulating pipe, a temperature adjusting device, a micro-nano bubble generating device and a dissolving part, wherein the circulating pipe is used for generating nano-level micro-nano bubble water in the washing tank and circulating the micro-nano bubble water, the circulating pipe enables cleaning water or rinsing water to return to a closed washing outer tank after descending and circulating from the closed washing outer tank, the temperature adjusting device performs a cooling or heating function so as to adjust the temperature of the circulating cleaning water or rinsing water to a specific temperature, the micro-nano bubble generating device receives the cleaning water or rinsing water circulated after temperature adjustment and performs micro-nano bubble treatment, the dissolving part receives the cleaning water or rinsing water subjected to micro-nano bubble treatment to perform dissolving and concentration, and the washing device utilizing the effective dissolving and concentrating technology of the closed micro-nano bubbles is characterized in that,

more than one leading-out nozzle is arranged on the side surface of the closed washing outer tank, the leading-in nozzle is arranged at the lower part of the closed washing outer tank,

the washing device using the effective dissolving and concentrating technology of the closed micro-nano bubbles comprises an upper pressure-resistant closed washing outer tank cover and an auxiliary device,

a sealing member for maintaining airtightness is attached to the inner side of the outer washing tub cover, a hinge is installed at one side of the outer washing tub cover to open or close the outer washing tub cover, one or more clamps are installed at the other side of the outer washing tub cover to provide airtightness when the outer washing tub cover is closed,

the auxiliary device includes:

a breather valve which has a function of drawing air when water is supplied or discharged, and a function of maintaining or adjusting pressure when the breather valve is pressurized and converted to a closed type;

a muffler device combined with the vent valve for minimizing noise generated when pressure reduction or discharge for adjusting pressure is performed; and

a pressure gauge which displays the internal pressure of the closed washing outer tank, and plays a role of adjusting the pressure by interlocking with the vent valve when the internal pressure exceeds a predetermined pressure, and the pressure gauge can be not used in the case of low pressure or can be selectively used in the case of high pressure,

the closed washing outer tank and the washing outer tank cover have a pressure-resistant structure and material capable of withstanding a predetermined pressure, and a pressure gauge, a vent valve, and a muffler device as auxiliary devices can be selectively attached to the upper portion of the washing outer tank cover or the upper portion of the side surface of the washing outer tank depending on the washing environment and the device structure.

2. A washing method using an effective dissolving and concentrating technology of closed micro-nano bubbles is characterized by comprising the following steps:

a micro-nano bubble pretreatment step of supplying cleaning water or rinsing water to the closed washing outer tank to generate and dissolve micro-nano bubbles until the outer tank is full of water, so as to use the oxidative decomposition force of the micro-nano bubbles;

a micro-nano bubble post-treatment step of converting the washing outer tank into a pressure-tight type after the washing water is filled with water, and performing one of a work of treating the micro-nano bubbles at a temperature of or below normal temperature and a specified pressure or a work of continuously generating the micro-nano bubbles at a temperature of or below normal temperature and a specified pressure by using an electrolyte including a surfactant or an inorganic salt as a catalyst, so as to convert the washing water or the rinsing water into micro-nano bubble oxygen active water;

a reaction step of micro-nano bubble oxygen active water, namely, under the condition of the same temperature and pressure, converting the micro-nano bubble post-treatment step into washing water or rinsing water of the micro-nano bubble oxygen active water for storing water for a specified time so as to give reaction time with the washed objects;

after the reaction of the micro-nano bubble oxygen active water is finished and the pressure sealing state of the washing outer tank is released, executing a common washing step; and

and draining after washing.

3. The washing method using the effective dissolving and concentrating technology of the closed micro-nano bubbles according to claim 2, wherein the micro-nano bubble pressurizing dissolving and concentrating process has a basic stroke of micro-nano bubble dissolving and concentrating for making the closed washing outer tank reach a specified pressure and maintaining the repeated cycle process for a specified time, and further comprises a promoting stroke of micro-nano bubble dissolving and concentrating, wherein the promoting stroke of micro-nano bubble dissolving and concentrating means that the micro-nano bubble generating and concentrating process is continuously repeated by performing pressure reduction by discharging the specified pressure and then re-operating the micro-nano bubble generating and circulating system under the condition that the washing power of the micro-nano bubble oxygen active water is still insufficient after the basic stroke is finished, so that the washing and sterilizing power can be enhanced.

4. The washing method using the effective dissolution concentration technique of the closed micro-nano bubbles according to claim 2, wherein the micro-nano bubble pre-treatment step comprises the steps of: opening a water supply valve provided in a water supply pipe to supply washing water or rinsing water for washing to the inside of a washing tank, and discharging air corresponding to the volume of the supplied water through a vent valve when water supply is started, wherein the washing tank is communicated with the inside of an outer washing tank through a plurality of through holes formed along the outer circumferential surface of the washing tank, so that the washing water or rinsing water supplied to the inside of the washing tank flows into the inside of the outer washing tank through the through holes, and the washing water or rinsing water moves to a micro-nano bubble generation circulation system having a micro-nano bubble generation device placed outside the outer washing tank when the washing water or rinsing water fills the outer washing tank and the inside of the washing tank at about 1/2 of a predetermined height, and the supplied washing water or rinsing water is subjected to a micro-nano bubble process for a predetermined number of times or more, the micro-nano bubble generation device is enabled to perform micro-nano bubble processing together with oxygen in the air at one time, generated micro-nano bubbles are mixed and dissolved in the dissolving part, then, the micro-nano bubble process is executed for many times by circulating cleaning water and rinsing water, and if the cleaning water or the rinsing water is filled to the specified height of the inner parts of the outer tank and the washing tank, the water supply valve is closed, and redundant water supply is finished.

5. The washing method using the effective dissolution concentration technique of the closed micro-nano bubbles according to claim 2, wherein the micro-nano bubble post-treatment step comprises the steps of: if the outer tub of the washing machine is switched to a pressure-tight closed type as the water supply is finished and the micro-nano bubble generating device continues to operate at room temperature or a temperature lower than the room temperature to repeatedly circulate the washing water or the rinsing water, the volume of the washing water or the rinsing water inside the pressure-tight closed type washing outer tub becomes large and the pressure thereof gradually becomes high, so that the gas solubility is increased, the dissolved oxygen and the micro-nano bubbles are dissolved and concentrated to a high concentration, and the washing water or the rinsing water is converted into micro-nano bubble oxygen activated water containing the high-concentration dissolved oxygen and the micro-nano bubbles above a predetermined level and exhibiting the washing and sterilizing functions, and then the micro-nano bubble generation circulation system ends.

6. The washing method using the effective dissolution and concentration technique of the closed type micro-nano bubbles according to claim 2, wherein the micro-nano bubble post-treatment step further comprises a step of adding a specified amount of surfactant or electrolyte of inorganic salts as a catalyst for generating more micro-nano bubbles when supplying water.

7. The washing method using the effective dissolution and concentration technology of the closed micro-nano bubbles according to claim 2, wherein the reaction step of the oxygen activity of the micro-nano bubbles comprises the following steps: under the same temperature and pressure conditions formed in the micro-nano bubble post-treatment step, the washing water or rinsing water converted into micro-nano bubble oxygen active water plays a washing role in a specified time to perform washing and sterilizing functions, and if the reaction of micro-nano bubble oxygen activity is finished, the pressurized and sealed state in the sealed washing outer tank is released.

8. The washing method using the effective dissolution and concentration technology of the closed micro-nano bubbles according to claim 2, wherein in the micro-nano bubble post-processing step, when the micro-nano bubbles of the washing water or the rinsing water are processed, the temperature of the washing water or the rinsing water in the washing system, the dissolution and concentration stroke of the micro-nano bubbles, and the cycle period of the micro-nano bubble generation and circulation system can be adjusted according to the concentrations of the micro-nano bubbles and dissolved oxygen, or according to the types, the quantity, and the pollution types and the degree of the washed objects.

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