Cleaning apparatus and cleaning method

Abstract

To provide a cleaning device and cleaning method that can effectively utilize concentrated water. [Solution] A washing apparatus for washing an object to be washed in a washing process including a pre-process and a post-process, comprising: a reverse osmosis section for filtering raw water by reverse osmosis; a permeate water line for supplying the permeate water from the reverse osmosis section that has passed through and been filtered to the post-process; a concentrated water line for supplying concentrated water separated from the permeate water by the reverse osmosis section to the pre-process; and a replenishment line for supplying raw water to the pre-process when the concentrated water falls below a predetermined amount.

Description

Technical Field

[0001] The present invention relates to a cleaning device and a cleaning method.

Background Art

[0002] It is known that general tap water or groundwater used for cleaning passenger cars and the like contains chlorine residues and mineral components such as calcium, magnesium, and iron. Due to these impurities, when water droplets remain on the vehicle body surface and dry after car washing, there is a problem that water spots, so-called water stains, remain.

[0003] Therefore, in Patent Documents 1 and 2, a two-stage cleaning device is disclosed in which dirt is washed off with tap water in the previous step and washed with permeated water from which such impurities have been removed in advance in the finishing subsequent step.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, concentrated water is generated together with permeated water in the step of obtaining permeated water for finishing by reverse osmosis. Therefore, an object of the present invention is to provide a cleaning device and a cleaning method capable of effectively utilizing concentrated water.

Means for Solving the Problems

[0006] The present invention solves the above problems and is a washing apparatus for washing an object to be washed in a washing process including a pre-process and a post-process, comprising: a reverse osmosis section for filtering raw water by reverse osmosis; a permeate water line for supplying the permeate water from the reverse osmosis section that has passed through and been filtered to the post-process; a concentrated water line for supplying concentrated water separated from the permeate water by the reverse osmosis section to the pre-process; and a replenishment line for supplying raw water to the pre-process when the concentrated water falls below a predetermined amount.

[0007] Furthermore, the present invention is a cleaning apparatus comprising a pre-process cleaning water tank connected to the reverse osmosis section via the concentrated water line and capable of storing concentrated water internally, and a post-process cleaning water tank connected to the reverse osmosis section via the permeate water line and capable of storing permeate water internally.

[0008] Furthermore, the present invention relates to a washing apparatus in which raw water is supplied to the pre-process washing water tank via a replenishment line when the amount of concentrated water stored in the pre-process washing water tank falls below a predetermined amount.

[0009] Furthermore, the present invention relates to a cleaning device in which the pre-process cleaning water tank is equipped with a ball tap valve that opens and closes the supply line that supplies raw water according to the amount of concentrated water stored.

[0010] Furthermore, the present invention relates to a cleaning apparatus that connects the pre-process cleaning water tank and the post-process cleaning water tank, and has a connecting line that supplies the permeate stored in the post-process cleaning water tank to the pre-process cleaning water tank when the amount of permeate stored in the pre-process cleaning water tank reaches a predetermined amount.

[0011] Furthermore, the present invention relates to a washing apparatus for washing an object to be washed in a washing process including a pre-process and a post-process, comprising: a reverse osmosis section for filtering raw water supplied from a raw water source by reverse osmosis; a pre-filter connected between the reverse osmosis section and the raw water source; a permeate line for transporting the permeate from the reverse osmosis section that has passed through and been filtered; a post-process washing water tank connected downstream of the reverse osmosis section via the permeate line; a concentrated water line for transporting concentrated water separated from the permeate by the reverse osmosis section; and a pre-process washing water tank connected downstream of the reverse osmosis section via the concentrated water line. The cleaning apparatus comprises: an ion exchange filter provided in the permeate water line; a restrictor provided in the concentrated water line; a supply line connecting the raw water source and the pre-process cleaning water tank, which supplies raw water to the pre-process cleaning water tank when the concentrated water stored in the pre-process cleaning water tank falls below a predetermined amount; and a connecting line connecting the pre-process cleaning water tank and the post-process cleaning water tank, which supplies permeate stored in the post-process cleaning water tank to the pre-process cleaning water tank when the permeate water stored in the pre-process cleaning water tank reaches a predetermined amount.

[0012] Furthermore, the present invention relates to a cleaning method for cleaning an object to be cleaned in a cleaning process including a pre-process and a post-process, comprising the steps of: filtering raw water by reverse osmosis; supplying the permeate from the reverse osmosis section filtered by reverse osmosis to the post-process; supplying concentrated water separated from the permeate by reverse osmosis to the pre-process; and supplying raw water to the pre-process when the amount of concentrated water falls below a predetermined amount. [Effects of the Invention]

[0013] According to the cleaning apparatus and cleaning method of the present invention, it becomes possible to effectively utilize concentrated water. [Brief explanation of the drawing]

[0014] [Figure 1] This is a block diagram showing the basic configuration of the cleaning device of the present invention. [Figure 2]This is a block diagram of variation 1. [Modes for carrying out the invention]

[0015] The following describes specific embodiments of the cleaning apparatus of the present invention with reference to the drawings. However, the present invention is not limited in any way to these embodiments.

[0016] <Overall configuration of the cleaning device 1> Figure 1 is a block diagram showing the basic configuration of the cleaning device 1 of this embodiment. The cleaning device 1 of this embodiment will be described with reference to Figure 1. As shown in Figure 1, the cleaning device 1 uses raw water supplied from an external water source, i.e., a raw water supply source 9 such as tap water, groundwater, or well water, to clean the object to be cleaned, such as a passenger car (hereinafter sometimes simply referred to as "passenger car"). Note that the object to be washed by the cleaning device 1 of this embodiment is not limited to passenger cars.

[0017] The washing device 1 washes a passenger car in at least two steps, including a pre-washing step to remove dirt adhering to the car body and a post-washing step for finishing. The pre-washing step includes steps such as removing dirt adhering to the car body with water or car shampoo, applying wax along with shampoo washing, applying various coatings such as water-repellent coatings, and rinsing. The post-washing step includes washing away any water remaining on the car body from the pre-washing step using permeate water that has passed through a reverse osmosis membrane. After washing with the washing device 1 of this embodiment, the passenger car does not require the usual step of wiping off the water. In other words, the washing device 1 of this embodiment eliminates the need for the user of the washing device 1 to wipe off the water after washing the passenger car.

[0018] The cleaning device 1 includes a pre-filter 10 for pretreatment that filters impurities contained in raw water from a raw water supply source 9, a reverse osmosis membrane 30 that filters impurities contained in the pretreated water that has passed through the pre-filter 10, a restrictor 150 for applying a predetermined water pressure to the reverse osmosis membrane 30, a pre-process cleaning water tank 50 that stores the concentrated water discharged from the reverse osmosis membrane 30, and a post-process cleaning water tank 90 that stores the permeated water that has passed through the reverse osmosis membrane of the reverse osmosis membrane 30.

[0019] Also, the cleaning device 1 includes a raw water line 1 hundred for sending raw water from the raw water supply source 9 to the reverse osmosis membrane 30, a concentrated water line 300 for sending the concentrated water from the reverse osmosis membrane 30 to the pre-process cleaning water tank 50, and a permeated water line 500 for sending the permeated water from the reverse osmosis membrane 30 to the post-process cleaning water tank 90. The pre-filter 10 is provided in the raw water line 100.

[0020] Also, the cleaning device 1 includes a replenishment system 700 that replenishes the pre-process cleaning water tank 50 by sending raw water when the amount of concentrated water stored in the pre-process cleaning water tank 50 becomes less than or equal to a predetermined amount, a pre-process water supply system 800 that supplies the water stored in the pre-process cleaning water tank 50 for the pre-process, and a post-process water supply system 900 that supplies the water stored in the post-process cleaning water tank 90 for the post-process.

[0021] Here, the replenishment system 700 includes a replenishment line 710 for sending water from the raw water supply source 9 to the pre-process cleaning water tank 50, and a ball tap valve 7 three hundred that is provided in the pre-process cleaning water tank 50 and controls the timing of sending water into the pre-process cleaning water tank 50 from the replenishment line 710. The replenishment line 710 in the illustrated example is provided so as to branch from the raw water line 100 connected to the raw water supply source 9 via a branch point 750. The branch point 750 is located upstream in the water supply direction from the pre-filter 10. Therefore, the replenishment system 700 transfers the water of the raw water supply source 9 to the pre-process cleaning water tank 50 without passing through the pre-filter 10.

[0022] Further, the pre-process water supply system 800 includes a pre-process line 810 that delivers pre-process wash water from the pre-process wash water tank 50, and a transfer pump 830 provided in the pre-process line 810 for transferring the pre-process wash water. Also, the post-process water supply system 900 includes a post-process line 910 that delivers post-process wash water from the post-process wash water tank 90, and a transfer pump 930 provided in the post-process line 910 for transferring the post-process wash water.

[0023] <Prefilter 10> The prefilter 10 is a filter medium for filtering impurities contained in raw water. As such a prefilter 10, a sediment filter that can remove impurities mainly having a size of 5 μm or more, such as sand, dust, and iron rust contained in raw water, can be used. As an example of the sediment filter, one made of polypropylene and having fibers bonded by a heat bonding technique can be mentioned.

[0024] In the prefilter 10 of the present embodiment, in addition to such a sediment filter, an activated carbon filter that can remove residual chlorine contained in raw water can be used in combination. When these sediment filter and activated carbon filter are used in combination, as the connection order, the sediment filter is arranged on the upstream side and the activated carbon filter is arranged on the downstream side. Note that such an activated carbon filter is not essential as the prefilter 10, and the above sediment filter may be used alone.

[0025] <Reverse osmosis membrane 30> The reverse osmosis membrane 30 is an example of a reverse osmosis section. The reverse osmosis membrane 30 is a membrane that filters out impurities contained in the pre-treated water using the reverse osmosis phenomenon. Such a reverse osmosis membrane 30 can remove, for example, more than 90% of impurities that cause water spots (water stains). Permeate water from which impurities have been removed by reverse osmosis is discharged from this reverse osmosis membrane 30. In addition, concentrated water, which is the water remaining after the permeate water has been separated and contains residual impurities, is also discharged from the reverse osmosis membrane 30. In other words, the reverse osmosis membrane 30 discharges permeate water and concentrated water. This reverse osmosis membrane 30 can be seen as a configuration that separates the supplied raw water into permeate water with relatively fewer impurities and concentrated water with relatively more impurities. Furthermore, the permeate water has a lower concentration of impurities than the raw water, and the concentrated water has a higher concentration of impurities than the raw water.

[0026] As described above, the permeate water is sent to the downstream cleaning water tank 90 via the permeate water line 500. The concentrated water is sent to the upstream cleaning water tank 50 via the concentrated water line 300. As will be described in detail later, in this embodiment, both the permeate water and the concentrated water discharged from the reverse osmosis membrane 30 are used to wash the passenger car.

[0027] <Restrictor 150> The concentrated water line 300 is equipped with a restrictor 150 that adjusts the flow rate of concentrated water from the reverse osmosis membrane 30. By providing the restrictor 150, the water pressure of the raw water can be efficiently applied to the reverse osmosis membrane 30. Furthermore, by setting the water pressure using the restrictor 150, the ratio of permeate and concentrated water discharged from the reverse osmosis membrane 30 can be adjusted.

[0028] <Pre-processing wash water tank 50> The pre-process cleaning water tank 50 is a container for storing concentrated water separated by the reverse osmosis membrane 30. The size of the pre-process cleaning water tank 50 can be set according to the volume of concentrated water to be stored. The concentrated water stored in the pre-process cleaning water tank 50 is sent to commercial and household car wash machines and high-pressure washers (high-pressure cleaning guns), etc., and used in the pre-process.

[0029] Here, as described above, a replenishment system 700 is connected to the pre-process cleaning water tank 50. The replenishment system 700 supplies raw water to the pre-process cleaning water tank 50 at predetermined timings. To explain further, when the amount of water stored in the pre-process cleaning water tank 50 falls below a predetermined amount, raw water is supplied to the pre-process cleaning water tank 50 via the replenishment system 700. In this embodiment, when the amount of water stored in the pre-process cleaning water tank 50 falls below a predetermined amount (for example, 1 / 3 of the tank capacity), the ball tap valve 730 is set to open the replenishment line 710 and replenish raw water. This ensures that even when a large amount of water is used in the pre-process cleaning, for example, water can be maintained in the pre-process cleaning water tank 50, and a shortage of water in the pre-process is suppressed.

[0030] In this embodiment, the water volume is adjusted using a ball tap valve 730, but the means for adjusting the water volume are not limited to this. For example, a sensor for detecting the water volume and a valve mechanism that opens and closes in conjunction with the sensor may be provided in the pre-process wash water tank 50. Furthermore, in this embodiment, the supply line 710 is provided to branch off from the raw water line 100 connected to the raw water supply source 9, but it may also be directly connected to the raw water supply source 9.

[0031] <Post-processing cleaning water tank 90> The post-processing wash water tank 90 is a container for storing the permeate water that has passed through the reverse osmosis membrane 30. The size of the post-processing wash water tank 90 can be set according to the volume of permeate water to be stored. The permeate water stored in the post-processing wash water tank 90 is sent to commercial and household car wash machines and high-pressure washers (high-pressure washing guns), etc., and used in the post-processing stage.

[0032] Furthermore, the downstream cleaning water tank 90 may be equipped with means for detecting the amount of water. One example of such means for detecting the amount of water is a ball tap valve. Specifically, the ball tap valve can be set to close the permeate water line 500 and stop supplying permeate water when the amount of water stored in the downstream cleaning water tank 90 becomes full. Alternatively, the downstream cleaning water tank 90 may be equipped with a sensor for detecting the amount of water and a valve mechanism that opens and closes in conjunction with the sensor. To further explain, for example, if the sensor detects that the amount of water in the downstream cleaning water tank 90 exceeds a predetermined amount, the permeate water line 500 may be closed, and the supply line 710 may be opened to maintain the amount of water in the upstream cleaning water tank 50.

[0033] <Ratio of permeate water to concentrated water> In the washing apparatus 1 of this embodiment, the ratio of permeate water and concentrated water separated from the reverse osmosis membrane 30 can be set as appropriate. Known means can be used to adjust this ratio, but as an example, flow rate adjustment valves may be provided in the permeate water line 500 and / or the concentrated water line 300. The ratio of the flow rates of permeate water and concentrated water can be adjusted using such flow rate adjustment valves.

[0034] Here, the ratio of permeate to concentrated water is such that setting a lower proportion of permeate reduces the amount of impurities in the permeate, resulting in higher purity. On the other hand, a lower proportion of permeate increases the amount of raw water used to obtain a predetermined amount of permeate. In other words, a lower proportion of permeate increases the cost of washing.

[0035] For example, in order to maintain a certain level of purity of the permeate in subsequent processes, it is preferable that the ratio of concentrated water to raw water be 50% or more and the ratio of permeate be 50% or less, more preferably that the ratio of concentrated water be 60% or more and the ratio of permeate be 40% or less, and particularly preferably that the ratio of concentrated water be 70% or more and the ratio of permeate be 30% or less. The ratio of concentrated water to permeate to raw water can be arbitrarily set, taking into consideration various factors such as the purity of the permeate and the lifespan of the pre-filter.

[0036] Furthermore, control may be implemented to switch the ratio of permeate and concentrated water when certain conditions are met. For example, the ratio of permeate and concentrated water may be pre-programmed to automatically adjust according to water quality, water pressure, water temperature, etc. Alternatively, the ratio of permeate and concentrated water may be detected and / or controlled via a network such as the Internet. This allows for remote management of the generation of permeate and concentrated water by the washing device 1.

[0037] <Cleaning method using cleaning device 1> Next, the cleaning method using the cleaning device 1 of this embodiment will be described. The cleaning method using the cleaning device 1 includes, for example, the following steps. (1-1) A process of filtering impurities from raw water supplied from raw water source 9 using a pre-filter 10. (1-2) A process in which the pre-treated water filtered by the pre-filter 10 is filtered by the reverse osmosis membrane 30 to separate it into permeate water and concentrated water. (1-3) A step of storing the concentrated water separated by the reverse osmosis membrane 30 in the pre-process wash water tank 50. (1-4) A process in which the permeate separated by the reverse osmosis membrane 30 is stored in the subsequent washing water tank 90. (2-1) A process in which the concentrated water stored in the pre-process washing water tank 50 is sent by the transfer pump 830 to commercial car wash machines or household high-pressure washing guns. (2-2) Process to wash off dirt from the vehicle body (previous process) (3-1) A process in which the permeate water stored in the post-processing washing water tank 90 is sent by the transfer pump 930 to commercial and household car wash machines, high-pressure washing guns, etc. (3-2) A step to wash away any dirt or water droplets remaining on the vehicle body from the previous step (post-step).

[0038] Furthermore, the amount of water used in the preceding process varies depending on the car washing method, and the amount of concentrated water stored in the preceding process washing water tank 50 may become insufficient during the process described above. In that case, the following steps can be performed at any stage of the above steps (1-1) to (3-2). (4) A process in which raw water is supplied to the pre-process wash water tank 50 by the supply system 700 (water replenishment process)

[0039] Furthermore, in the cleaning process using the cleaning apparatus 1 of this embodiment, if a large amount of concentrated water is used in the preceding process, it is expected that a large amount of permeate will also be generated for use in the subsequent process. In such cases, to prevent the generation of permeate from exceeding the capacity of the subsequent cleaning water tank 90, steps (1-1) to (1-4) may be temporarily suspended. In this case, step (4) may be performed in steps (2-1) and (2-2) above.

[0040] As described above, according to the cleaning apparatus 1 and cleaning method of this embodiment, concentrated water that was previously separated by the reverse osmosis membrane 30 and discarded without being used can be used in the pre-cleaning process, thus enabling the efficient use of raw water during cleaning.

[0041] In this way, the concentrated water separated from the permeate is used in the pre-washing process, allowing the ratio of concentrated water to permeate to be increased. This relatively reduces the proportion of impurities in the permeate, making it possible to obtain highly pure permeate without, for example, installing other filtration devices such as ion exchange filters between the reverse osmosis membrane 30 and the post-wash water tank 90.

[0042] Now, regarding the cleaning apparatus 1 of this embodiment, existing cleaning equipment may be used for the parts excluding the components related to the preceding process (pre-process cleaning water tank 50, concentrated water line 300, replenishment system 700, and pre-process water supply system 800). For example, "Hyper Water" (registered trademark) manufactured by Marfied Co., Ltd. can be used. In this way, when using existing cleaning equipment, it is only necessary to prepare the pre-process cleaning water tank 50 and the pre-process water supply system 800, and the various lines that can be connected to them, so the cleaning apparatus 1 of this embodiment can be installed at a reduced cost.

[0043] <Example 1> Figure 2 is a block diagram of the first modified example. Next, a modified example of this embodiment will be described with reference to Figure 2. Note that in Figure 2, the same reference numerals are used for parts identical to those in the above embodiment, and their detailed descriptions are omitted.

[0044] The cleaning apparatus 101 according to Modification 1 includes a permeate supply system 130 that supplies permeate from the post-process cleaning water tank 90 to the pre-process cleaning water tank 50. This permeate supply system 130 includes a connecting line 131 that connects the post-process cleaning water tank 90 and the pre-process cleaning water tank 50, a post-process detection means 133 provided in the post-process cleaning water tank 90 to detect the amount of water, a pre-process detection means 135 provided in the pre-process cleaning water tank 50 to detect the amount of water, and a valve mechanism 137 provided in the connecting line 131 that works in conjunction with the post-process detection means 133 and / or the pre-process detection means 135 to control the flow from the post-process cleaning water tank 90 to the pre-process cleaning water tank 50. The post-process detection means 133 and the pre-process detection means 135 are composed of well-known water level sensors such as contact type sensors.

[0045] By providing such a permeate water supply system 130, when the amount of concentrated water stored in the pre-process wash water tank 50 becomes insufficient, permeate water in the post-process wash water tank 90 can be supplied to the pre-process wash water tank 50 via the connecting line 131. Alternatively, if the generation of permeate water in the post-process wash water tank 90 exceeds a predetermined amount and is about to exceed the capacity of the post-process wash water tank 90, the permeate water in the post-process wash water tank 90 can be released to the pre-process wash water tank 50 via the connecting line 131.

[0046] Furthermore, a ball tap valve may be provided as the downstream process detection means 135 and the valve mechanism 137. To elaborate further, the ball tap valve may be configured to open the connecting line 131 when the amount of water stored in the downstream process cleaning water tank 90 becomes full, thereby supplying permeate water from the downstream process cleaning water tank 90 to the upstream process cleaning water tank 50. Alternatively, the valve mechanism 137 may be configured to include a check valve.

[0047] Now, the washing device 101 according to the modified example 1 is provided in the concentrated water line 300 and includes a restrictor 150 that adjusts the flow rate of permeate water from the reverse osmosis membrane 30. By providing the restrictor 150, the water pressure of the raw water can be efficiently applied to the reverse osmosis membrane 30.

[0048] Furthermore, the washing device 101 is equipped with an ion exchange filter 170 installed in the permeate water line 500. The ion exchange filter 170 performs ion exchange on the permeate water, removing residual ions contained in the permeate water. By installing the ion exchange filter 170, the purity of the permeate water can be increased. More specifically, by installing the ion exchange filter 170, it is possible to obtain permeate water with higher purity compared to when it is not installed, resulting in a higher quality finish for car washing. In addition, since the concentrated water separated from the permeate water is used in the pre-washing process, the raw water can be utilized more effectively compared to when the concentrated water is discarded. Therefore, it is permissible to set the purity of the permeate water to a higher level. Moreover, by increasing the purity of the permeate water, the lifespan of the ion exchange filter 170 can also be extended.

[0049] The illustrated washing device 101 comprises three components: a permeate water supply system 130, a restrictor 150, and an ion exchange filter 170, but is not limited to these. For example, it may be configured to include one of the permeate water supply system 130, the restrictor 150, and the ion exchange filter 170, or a combination of any two of them.

[0050] <Other variations> In the explanation of Figure 1 above, it was explained that the replenishment line 710 supplies raw water when the amount of concentrated water stored in the upstream wash water tank 50 becomes insufficient, but it is not limited to this. For example, the replenishment line 710 may be configured to be used when the amount of permeate stored in the downstream wash water tank 90 reaches the tank's capacity. That is, if a large amount of concentrated water is used in the upstream process, it is expected that a large amount of permeate used in the downstream process will also be generated. In such a case, in order to prevent the generation of permeate from exceeding the capacity of the downstream wash water tank 90, the flow from raw water to the reverse osmosis membrane 30 may be temporarily stopped, and raw water may be directly supplied to the upstream wash water tank 50 via the replenishment line 710 to maintain the amount of water in the upstream wash water tank 50.

[0051] Furthermore, although the cleaning device 1 in the above-described embodiment is equipped with a pre-process cleaning water tank 50, it may also be configured without such a pre-process cleaning water tank 50. To further explain, the concentrated water line 300 from the reverse osmosis membrane 30 may be directly connected to a commercial car wash machine or the like. In this configuration, the replenishment line 710 is directly connected to the concentrated water line 300, and a water volume sensor installed downstream may be used to replenish the water from the replenishment line 710 when the amount of water flowing through the line falls below a certain amount.

[0052] Furthermore, although the cleaning device 1 in the above-described embodiment is equipped with a post-processing cleaning water tank 90, it may also be configured without such a post-processing cleaning water tank 90. ​​To further explain, a permeate water line 500 from the reverse osmosis membrane 30 or ion exchange filter 170 may be directly connected to a commercial car wash machine or the like.

[0053] Furthermore, although the cleaning device 1 of the above-described embodiment is equipped with a restrictor 150, the means for adjusting the flow rate of concentrated water is not limited to this. For example, various types of valves can be used as other means for adjusting the flow rate. Specifically, proportional valves, needle valves, or flow-controlling electronic valves can be used as appropriate, as long as they can maintain the water pressure applied to the reverse osmosis membrane 30 and suppress the amount of concentrated water discharged. Alternatively, the water pressure of the raw water may be adjusted using, for example, a pressure pump. To elaborate further, the means may include restrictor, needle valve adjustment, flow rate control, water pressure adjustment, and combinations thereof.

[0054] Now, although various embodiments and modifications have been described above, these embodiments and modifications can of course be combined to form a complete system. Furthermore, this disclosure is not limited in any way to the embodiments described above, and can be implemented in various forms without departing from the gist of this disclosure. [Explanation of Symbols]

[0055] 1…Water purification system 10… Pre-filter 30...Reverse osmosis membrane 50…Pre-process cleaning water tank 90...Post-processing cleaning water tank 300...Concentrated water line 500... Permeable water line 700... Supply System 800…Front-end water supply system 900... Post-processing water supply system

Claims

1. A cleaning apparatus that cleans an object to be cleaned in a cleaning process that includes a pre-process and a post-process, A reverse osmosis section that filters raw water by reverse osmosis, A permeate line that supplies the permeate water from the reverse osmosis section, which has passed through and been filtered by the reverse osmosis section, to the subsequent process, A concentrated water line that supplies concentrated water separated from the permeate water by the reverse osmosis section to the preceding process, A supply line that supplies raw water to the preceding process when the amount of concentrated water falls below a predetermined level, A cleaning device equipped with the following features.

2. A pre-process washing water tank, which is connected to the reverse osmosis section via the concentrated water line and can store concentrated water inside, A post-process cleaning water tank, which is connected to the reverse osmosis section via the permeate water line and can store permeate water inside, The cleaning apparatus according to claim 1, comprising:

3. The washing apparatus according to claim 2, wherein when the amount of concentrated water stored in the pre-process washing water tank falls below a predetermined amount, raw water is supplied to the pre-process washing water tank via the replenishment line.

4. The washing apparatus according to claim 3, wherein the preceding washing water tank is equipped with a ball tap valve that opens and closes the supply line that supplies raw water in accordance with the amount of concentrated water stored.

5. The cleaning apparatus according to any one of claims 2 to 4, wherein the preceding cleaning water tank and the subsequent cleaning water tank are connected, and a connecting line is connected to supply the permeate stored in the subsequent cleaning water tank to the preceding cleaning water tank when the amount of permeate stored in the preceding cleaning water tank reaches a predetermined amount.

6. A cleaning apparatus that cleans an object to be cleaned in a cleaning process that includes a pre-process and a post-process, A reverse osmosis section that filters raw water supplied from a raw water source by reverse osmosis, A pre-filter connected between the reverse osmosis section and the raw water supply source, A permeate line for supplying the permeate water from the reverse osmosis section that has passed through and been filtered, A post-processing wash water tank connected to the downstream side of the reverse osmosis section via the permeate water line, A concentrated water line for supplying concentrated water separated from the permeate water by the reverse osmosis section, A pre-process wash water tank connected to the downstream side of the reverse osmosis section via the aforementioned concentrated water line, An ion exchange filter provided in the aforementioned permeate water line, A restrictor provided in the aforementioned concentrated water line, A supply line connects the raw water supply source and the pre-process wash water tank, and supplies raw water to the pre-process wash water tank when the concentrated water stored in the pre-process wash water tank falls below a predetermined amount. A connecting line connects the preceding wash water tank and the succeeding wash water tank, and when the amount of permeate stored in the preceding wash water tank reaches a predetermined volume, the permeate stored in the succeeding wash water tank is supplied to the preceding wash water tank. A cleaning device equipped with the following features.

7. A cleaning method for cleaning an object to be cleaned in a cleaning process that includes a preceding process and a succeeding process, The steps include filtering the raw water by reverse osmosis, The step of supplying the permeate from the reverse osmosis section filtered by the reverse osmosis to the subsequent process, The step of supplying concentrated water separated from the permeate water by reverse osmosis to the preceding process, The steps include supplying raw water to the preceding process when the amount of concentrated water falls below a predetermined amount, A cleaning method comprising:

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