Hypochlorous Acid Generator

Abstract

To provide a hypochlorous acid generation device that can restrain water containing hypochlorous acid from entering an unintended portion of a device body even if the water containing the hypochlorous acid overflows from a storage tank.SOLUTION: A hypochlorous acid generation device 10 comprises a hypochlorous acid generation part 19 for generating hypochlorous acid, and a drainage part 42 for draining water containing the hypochlorous acid. The hypochlorous acid generation part 19 comprises a first storage tank 20 for storing the water containing the hypochlorous acid, a water release opening 19a for releasing the water containing the hypochlorous acid overflowing from the first storage tank 20, and a first drain pan 19b for guiding the water containing the hypochlorous acid released from the water release opening 19a, to the drainage part 42.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a hypochlorous acid generator that generates water containing hypochlorous acid by electrolysis. [Background technology]

[0002] Patent Document 1 discloses an air conditioner with an air sterilization function that can eliminate the sound made when electrolyzed water is discharged into a drain pan. This air conditioner has an indoor unit that includes an indoor heat exchanger, a drain pan that receives drain water from the indoor heat exchanger, and a blower that sends air to the indoor heat exchanger, and in air conditioning operation, the air conditioner also includes a gas-liquid contact member that is arranged on the air flow path of the blower and to which electrolyzed water is supplied, an electrolyzed water tray that receives the electrolyzed water discharged from the gas-liquid contact member and discharges the electrolyzed water into the drain pan via a discharge part provided at the bottom, and an electrolyzed water guide part that is interposed between the discharge part and the bottom of the drain pan and guides the electrolyzed water discharged from the discharge part to the drain pan. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-74735 Summary of the Invention [Problem to be solved by the invention]

[0004] Water containing hypochlorous acid is known to cause corrosion of metal materials, but the air conditioning device disclosed in Patent Document 1 had insufficient measures to prevent hypochlorous acid-containing water from entering (leaking) into unintended parts of the device body if the water overflowed from the electrolysis unit. Here, "unintended parts within the device body" refers to parts of the device that were not designed to be infiltrated by hypochlorous acid-containing water. Therefore, if hypochlorous acid-containing water enters an unintended part of the device body and comes into contact with the metal materials that make up the device body, corrosion of the metal materials may occur, and the corroded metal materials may cause various malfunctions in the function of the device body.

[0005] The present disclosure solves the above-mentioned conventional problems and provides a hypochlorous acid generating device that can prevent water containing hypochlorous acid from entering unintended parts of the device body even if the water containing hypochlorous acid overflows from a storage tank. [Means for solving the problem]

[0006] The hypochlorous acid generator of the present disclosure includes a hypochlorous acid generator that generates hypochlorous acid and a drainage unit that drains hypochlorous acid-containing water. The hypochlorous acid generator includes a first storage tank that stores hypochlorous acid-containing water, a water diversion opening for discharging hypochlorous acid-containing water that overflows from the first storage tank, and a first drain pan that guides the hypochlorous acid-containing water that has been released from the water diversion opening to the drainage unit. [Effects of the Invention]

[0007] The hypochlorous acid generator of the present disclosure can allow water containing hypochlorous acid that overflows from the first storage tank to escape through the water escape opening into the first drain pan. Therefore, even if the water containing hypochlorous acid overflows from the first storage tank, the water containing hypochlorous acid can be prevented from entering unintended parts of the device body. [Brief explanation of the drawings]

[0008] [Figure 1]FIG. 1 is a diagram showing the configuration of a space purification system according to the first embodiment. [Figure 2] FIG. 2 is a diagram showing the configuration of the hypochlorous acid generator according to the first embodiment. [Figure 3] FIG. 3 is a top view schematically showing the configuration of the hypochlorous acid generator. [Figure 4] FIG. 4 is a vertical cross-sectional view of the hypochlorous acid generating unit taken along line AA in FIG. [Figure 5] FIG. 5 is a perspective view showing the configuration of the water-repellent opening, the first drain pan, the first storage tank, the second storage tank, the frame, the second drain pan, the recess, and the drainage channel in the first embodiment. [Figure 6] FIG. 6 is a front view showing the configuration of the first drain pan, the frame, the second drain pan, the recess, and the drainage channel according to the first embodiment. [Figure 7] FIG. 7 is a perspective view showing the configuration of the first drain pan, the first storage tank, the second storage tank, the drainage section, and the frame body according to the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Before describing the embodiments of the present disclosure in detail, an overview of the embodiments will be described. The present embodiments relate to a hypochlorous acid generator. The hypochlorous acid generator is installed in a space purification system that adjusts humidity and sprays water containing a component that purifies the air (hereinafter referred to as an "air purification component") into a room. The air purification component may be, for example, hypochlorous acid with bactericidal or deodorizing properties. This sterilizes or deodorizes the room.

[0010] In a hypochlorous acid generator, water and high-concentration salt water are supplied separately to a storage tank (electrolytic cell), and these are mixed in the storage tank to produce a mixed water, which is low-concentration salt water.The resulting salt water is then electrolyzed to produce hypochlorous acid water.

[0011] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 7. However, in some cases, more detailed explanation than necessary will be omitted. For example, detailed explanation of already well-known matters or redundant explanation of substantially the same configuration will be omitted. This is to avoid the following explanation from being unnecessarily redundant and to make it easier for those skilled in the art to understand.

[0012] The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0013] [1-1.Configuration] [1-1-1. Space purification system] Referring to FIG. 1, a space purification system 100 is described.

[0014] The space purification system 100 is a device that, when circulating air in an indoor space 62 (also referred to as "room"), adds air purification components together with atomized water to air (RA: Return Air) from the indoor space 62. The space purification system 100 sterilizes and deodorizes the indoor space 62 by supplying air (SA: Supply Air) that has circulated inside to the indoor space 62. Here, hypochlorous acid is used as the air purification component, and the water containing the air purification component is hypochlorous acid water.

[0015] The space purification system 100 includes a hypochlorous acid generator 10, a duct 64a, a duct 64c, a low-reactivity duct 67a, and a low-reactivity duct 67c. The low-reactivity duct 67a and the low-reactivity duct 67c are collectively referred to as a duct 67.

[0016] [1-1-2. Hypochlorous acid generator] The hypochlorous acid generator 10 includes a housing 1, a purification air duct 5, a HEPA (High Efficiency Particulate Air) filter 11, a purification conveying fan 12, a micronization section 14, a control section 41, a hypochlorous acid generator 19, a drainage section 42, a second storage tank 43, a second drain pan 45, and a drainage channel 46.

[0017] With reference to FIG. 2, the housing 1, the purification air duct 5, the HEPA filter 11, the purification transport fan 12, the atomizing unit 14, and the control unit 41 will be described.

[0018] Housing 1 forms the outer shell of hypochlorous acid generator 10. Housing 1 has suction port 2a, suction port 2c, air outlet 3a, and air outlet 3c. Intake port 2a and suction port 2c are collectively referred to as suction port 2. Air outlet 3a and air outlet 3c are collectively referred to as air outlet 3.

[0019] The intake port 2a and the intake port 2c are arranged on one side surface of the housing 1. The intake port 2a and the intake port 2c are intake ports through which the air 8a and the air 8c outside the housing 1 obtained from the indoor space 62 are taken into the hypochlorous acid generator 10, respectively.

[0020] The air inlet 2a is connected via a duct 64a to an indoor air inlet 65a provided on the ceiling or the like of the indoor space 62. The air inlet 2a can draw air 8a from the indoor space 62 into the hypochlorous acid generator 10 through the indoor air inlet 65a.

[0021] The air inlet 2c is connected via a duct 64c to an indoor air inlet 65c provided on the ceiling or the like of the indoor space 62. The air inlet 2c can draw air 8c from the indoor space 62 into the hypochlorous acid generator 10 through the indoor air inlet 65c.

[0022] The air 8a and air 8c obtained from the indoor space 62 can also be called non-temperature-controlled air of the indoor space 62 that has not been temperature-controlled, or temperature-controlled air that has been temperature-controlled by an air conditioner or the like separately installed in the indoor space 62.

[0023] The air outlet 3a and the air outlet 3c are arranged on the other side surface of the housing 1 (the side surface opposite to the one side surface of the housing 1).

[0024] The air outlet 3a is an outlet that discharges air 9a (SA) that has circulated inside the hypochlorous acid generator 10 into the indoor space 62. The air outlet 3a is in communication with an indoor air outlet 68a provided on the ceiling or the like of the indoor space 62 via a low-reactivity duct 67a. The air outlet 3a can blow out the air 9a that has circulated inside the hypochlorous acid generator 10 from the indoor air outlet 68a toward the indoor space 62.

[0025] The air outlet 3c is an outlet that discharges the air 9c (SA) that has circulated inside the hypochlorous acid generator 10 into the indoor space 62. The air outlet 3c is in communication with an indoor air outlet 68c provided on the ceiling or the like of the indoor space 62 via a low-reactivity duct 67c. The air outlet 3c can blow out the air 9c that has circulated inside the hypochlorous acid generator 10 from the indoor air outlet 68c toward the indoor space 62.

[0026] The air 9a contains atomized hypochlorous acid water.

[0027] The air 9c contains atomized hypochlorous acid water.

[0028] The low-reactivity duct 67a and the low-reactivity duct 67c are both ducts connected downstream of the purification air duct 5, and have inner walls made of a low-reactivity material that is poorly reactive with hypochlorous acid water. The low-reactivity material is, for example, a polyolefin-based material. The polyolefin-based material includes, for example, at least one of polyethylene and polypropylene.

[0029] The cleaning air duct 5 is provided in the housing 1, and connects the intake 2 (the intake duct 2a and the intake duct 2c) with the outlet 3 (the outlet 3a and the outlet 3c). The cleaning air duct 5 is an air duct through which both the air 8a and the air 8c flow. It can also be said that the cleaning air duct 5 is an air duct through which the air 8a and the air 8c flow together.

[0030] The HEPA filter 11 is an air filter that removes dirt, dust, etc. from the air that flows into the hypochlorous acid generator 10 and outputs purified air. The HEPA filter 11 is disposed adjacent to the intake port 2a and the intake port 2c. The HEPA filter 11 is disposed in the purified air duct 5. The HEPA filter 11 is disposed upstream of the hypochlorous acid generator 19.

[0031] The purifying conveying fan 12 is a device for transporting air that has passed through the HEPA filter 11 along the purifying air duct 5 to the atomization unit 14. The purifying conveying fan 12 generates an air flow in the purifying air duct 5. The purifying conveying fan 12 draws air through the suction port 2 and blows it sequentially through the atomization unit 14 and the outlet 3 to the duct 67. More specifically, the purifying conveying fan 12 is a double-intake centrifugal fan. A known configuration can be adopted for the centrifugal fan. The purifying conveying fan 12 draws air through suction ports (not shown) provided on the left and right sides of the atomization unit 14 and transports the air to the atomization unit 14 through an outlet (not shown). The purifying conveying fan 12 is arranged in the purifying air duct 5. The purifying conveying fan 12 is arranged downstream of the hypochlorous acid generation unit 19. The purifying conveying fan 12 is arranged upstream of the atomization unit 14. The air volume, i.e., the rotation speed, of the purifying conveying fan 12 is controlled in accordance with an output signal from the control unit 41. When the purification transport fan 12 is operated, air is sent to the atomization section 14 .

[0032] The atomization unit 14 is a unit for humidifying the air taken into the purification air duct 5, and during humidification, it adds hypochlorous acid to the air introduced from the purification conveying fan 12 along with atomized water. The atomization unit 14 dilutes the hypochlorous acid water generated by the hypochlorous acid generation unit 19 with water, atomizes the diluted hypochlorous acid water by centrifugal crushing, and releases it into the air. The atomized hypochlorous acid water is released outside the housing 1 from the outlet 3 with the liquid components evaporated. The atomization unit 14 has a centrifugal crushing unit and a mixing tank, not shown. The micronization unit 14 uses a humidification motor (not shown) to rotate the centrifugal crushing unit, which uses centrifugal force to suck up hypochlorous acid water stored in a mixing tank (hypochlorous acid water generated by the hypochlorous acid generation unit 19 and water supplied from a water supply unit (not shown) in the mixing tank, diluting the hypochlorous acid water). This causes the hypochlorous acid water to scatter, collide, and crush in the surrounding area (centrifugal direction), thereby moistening the air passing through. The micronization unit 14 adjusts the humidification capacity (amount of humidification) by changing the rotation speed of the humidification motor in response to an output signal from the control unit 41. The amount of humidification can also be considered the amount of air purification component added to the air. A separate water supply unit (not shown) is also connected to the micronization unit 14. The separate water supply unit (not shown) supplies water to the mixing tank of the micronization unit 14 in response to an output signal from the control unit 41.

[0033] The control unit 41 controls the purification conveying fan 12, the hypochlorous acid generation unit 19, and the micronization unit 14. The control unit 41 controls the supply amount of hypochlorous acid water and the supply amount of water to the micronization unit 14, thereby controlling the concentration of hypochlorous acid in the mixed water of the micronization unit 14.

[0034] The hypochlorous acid generator 19 dilutes salt water (sodium chloride aqueous solution) stored in the salt water tank 23 to a predetermined concentration in the first storage tank 20 and performs electrolysis to generate hypochlorous acid water of a predetermined concentration. The hypochlorous acid generator 19 is disposed upstream of the purification conveying fan 12 in the purification air duct 5. The hypochlorous acid generator 19 includes the first storage tank 20, an electrode 21, a water supply unit 30, a salt water supply unit 32, a water stop unit 34, an electrolyzed water conveying unit 28, a water-proof opening 19a, and a first drain pan 19b.

[0035] 3 and 4, the first storage tank 20, the electrode 21, the water supply unit 30, the salt water supply unit 32, the water blocking unit 34, and the electrolyzed water transport unit 28 will be described. For ease of explanation, as shown in the figures, an XYZ Cartesian coordinate system is defined in which the horizontal direction along the longitudinal direction of the hypochlorous acid generator 19 is the X direction, the horizontal direction perpendicular to the X direction is the Y direction, and the direction perpendicular to both, i.e., the vertical direction, is the Z direction.

[0036] The first storage tank 20 stores a mixture of water and saltwater to be electrolyzed. The mixture is saltwater diluted to a predetermined concentration. The first storage tank 20 includes an electrolysis region 36 and a water supply channel 38.

[0037] The electrolysis region 36 is a region where plate-shaped electrodes 21 for performing electrolysis are disposed. Water is supplied to the upstream side of the electrolysis region 36 from a water supply channel 38. A bottom surface 50 of the electrolysis region 36 in the first storage tank 20 slopes downward from the upstream side to the downstream side along the X direction.

[0038] The water supply channel 38 is disposed adjacent to the electrolysis region 36 on the upstream side in the Y direction, and water flows toward the electrolysis region 36. The water supply channel 38 includes a first inclined surface 54 and a second inclined surface 55. The first inclined surface 54 slopes downward along the X direction. The second inclined surface 55 is disposed downstream of the first inclined surface 54, slopes downward along the Y direction, and is connected to the bottom surface 50 of the electrolysis region 36.

[0039] The electrode 21 is disposed in the first storage tank 20, and when, for example, the first storage tank 20 is detected to be full of water in response to an output signal from the control unit 41, it electrolyzes the mixed water by passing current through it, thereby generating electrolyzed water, which is hypochlorous acid water of a predetermined concentration. The electrode 21 generates hypochlorous acid water by electrolyzing a chloride aqueous solution (e.g., salt water) as an electrolyte.

[0040] The electrolyte is not particularly limited as long as it is capable of generating hypochlorous acid water and contains even a small amount of chloride ions, and examples thereof include aqueous solutions containing sodium chloride, calcium chloride, magnesium chloride, etc. as solutes. Hydrochloric acid is also acceptable.

[0041] The water supply unit 30 supplies water supplied from a water pipe outside the hypochlorous acid generator 10 to the water supply path 38 in response to an output signal from the control unit 41. The water supply unit 30 is disposed above the first inclined surface 54, and causes water to flow out from the outlet 30a of the water supply unit 30 onto the first inclined surface 54.

[0042] In response to an output signal from control unit 41, saltwater supply unit 32 supplies saltwater to water supply channel 38 downstream of the position where water is supplied from water supply unit 30 when water supply unit 30 is supplying water. The amount of saltwater supplied at one time can be determined appropriately through experiments or simulations, and may be, for example, about 1 / 1000 of the amount of water supplied at one time. Saltwater supply unit 32 has saltwater tank 23, saltwater transfer pump 24, check valve 25, and flow path 26.

[0043] The saltwater tank 23 stores high-concentration saltwater (aqueous solution of sodium chloride). This saltwater is, for example, saturated salt water. The saltwater tank 23 is connected to a tubular flow path 26 via a saltwater transfer pump 24.

[0044] The operation of the saltwater transfer pump 24 is controlled based on an output signal from the control unit 41. The saltwater transfer pump 24 connects the saltwater tank 23 and the flow path .

[0045] Check valve 25 is disposed in flow path 26 upstream of outlet 27 of flow path 26. Check valve 25 is disposed in a position where it is not submerged in the mixed water. Check valve 25 is disposed above water level L1 when first storage tank 20 is full.

[0046] Outlet 27 is disposed above second inclined surface 55 at a position where it is immersed in the mixed water when first storage tank 20 is full. Outlet 27 is located below water level L1 when first storage tank 20 is full. Outlet 27 remains immersed in the mixed water or the hypochlorous acid water produced by electrolysis even during the period when the mixed water is being electrolyzed by passing electricity through it.

[0047] The flow path 26 is disposed between the check valve 25 and the outlet 27. The flow path 26 is also referred to as the "nozzle" of the salt water supply unit 32.

[0048] The water stop unit 34 is a water level sensor that detects when the water level in the first storage tank 20 reaches the full water level L1, and supplies the detection result to the control unit 41.

[0049] The electrolyzed water transport unit 28 supplies electrolyzed water, i.e., hypochlorous acid water, from the first storage tank 20 to the mixing tank of the atomization unit 14 in response to an output signal from the control unit 41. The electrolyzed water transport unit 28 can also be called a hypochlorous acid water supply unit. The electrolyzed water transport unit 28 sends out almost the entire amount of hypochlorous acid water in the first storage tank 20 to the water supply pipe 29.

[0050] The water supply pipe 29 is connected between the electrolytic water transport unit 28 and the atomization unit 14, and supplies the hypochlorous acid water toward the atomization unit 14.

[0051] The water-avoiding opening 19a, the first drain pan 19b, the second storage tank 43, the second drain pan 45, and the drainage channel 46 will be described with reference to FIGS.

[0052] The water diversion opening 19a is an opening provided in a frame 44 that stands in the Z-axis direction from the open end of the first storage tank 20. The water diversion opening 19a connects the first storage tank 20 and the first drain pan 19b, and allows hypochlorous acid water that overflows from the first storage tank 20 to escape to the first drain pan 19b.

[0053] The first drain pan 19b is a flow path for guiding the hypochlorous acid water released from the water diversion opening 19a to the drainage section 42. The first drain pan 19b is disposed so as to be inclined in the direction of gravity toward the drainage section 42.

[0054] The second storage tank 43 stores the water containing hypochlorous acid that flows out of the first storage tank 20 without passing through the water diversion opening 19a. The second storage tank 43 is disposed below the first storage tank 20.

[0055] The second drain pan 45 is a flow path that guides water containing hypochlorous acid that has overflowed from the second storage tank 43 to the drainage unit 42. The second drain pan 45 is disposed tilted in the direction of gravity toward the drainage unit 42. The second drain pan 45 is disposed below the first drain pan 19b and abuts against the first drain pan 19b. The second drain pan 45 has a recess 45a.

[0056] The recess 45a is a groove extending from the open end of the second storage tank 43 toward the drainage portion 42. The recess 45a is part of a drainage channel formed by the abutment of the first drain pan 19b and the second drain pan 45.

[0057] Drainage channel 46 is a flow path that guides water containing hypochlorous acid that has overflowed from second storage tank 43 to drain section 42. Drainage channel 46 is formed by first drain pan 19b and second drain pan 45 abutting against each other.

[0058] The drain unit 42 drains water containing hypochlorous acid from the hypochlorous acid generator 10 via a drain pump (not shown). The water drained from the drain unit 42 includes water containing hypochlorous acid that has overflowed from the first storage tank 20 and water containing hypochlorous acid that has overflowed from the second storage tank 43.

[0059] [1-2. Operation] The operation of the hypochlorous acid generator 19 in the space purification system 100 configured as above will be described below.

[0060] When the control unit 41 detects, using a water level sensor (not shown), that the level of the hypochlorous acid-containing water has reached level L1, it controls the operation of the salt water supply unit 32 and the water supply unit 30 so that the level of the hypochlorous acid-containing water does not rise any further. However, if a malfunction occurs in the water level sensor, the control unit 41 cannot correctly detect the level of the hypochlorous acid-containing water stored in the first storage tank 20. If the control unit 41 cannot correctly detect the level of the hypochlorous acid-containing water, it cannot correctly control the operation of the salt water supply unit 32 and the water supply unit 30. As a result, the level of the hypochlorous acid-containing water exceeds level L1 and overflows from the first storage tank 20. The hypochlorous acid-containing water overflowing from the first storage tank 20 is released into the first drain pan 19b through a water-repellent opening 19a provided in the frame 44. The water containing hypochlorous acid that has escaped into the first drain pan 19b is guided to the drain portion 42 according to the inclination of the first drain pan 19b.

[0061] Furthermore, a chemical reaction may occur between the material forming the first storage tank 20 and the water containing hypochlorous acid, causing the strength of the first storage tank 20 to deteriorate, resulting in damage to the first storage tank 20. In this case, the water containing hypochlorous acid that flows out of the first storage tank 20 is stored in the second storage tank 43 located below. If the first storage tank 20 is damaged and the water containing hypochlorous acid flows out of the first storage tank 20, the control unit 41 cannot detect the correct water level using the water level sensor and cannot correctly control the salt water supply unit 32 and the water supply unit 30. Therefore, the control unit 41 controls the salt water supply unit 32 and the water supply unit 30 to continue supplying water and salt water to the first storage tank, causing the water containing hypochlorous acid stored in the second storage tank 43 to overflow from the second storage tank 43. The water containing hypochlorous acid that overflows from the second storage tank 43 is directed to the drainage channel 46. The water containing hypochlorous acid guided to the drainage channel 46 is guided to the drainage section 42 according to the inclination of the second drain pan 45.

[0062] [1-3. Effects, etc.] In this embodiment, the hypochlorous acid generator 10 includes a hypochlorous acid generator 19 that generates hypochlorous acid and a drainage unit 42 that drains water containing hypochlorous acid. The hypochlorous acid generator 19 includes a first storage tank 20 that stores water containing hypochlorous acid, a water diversion opening 19a that allows water containing hypochlorous acid that overflows from the first storage tank 20 to escape, and a first drain pan 19b that guides the water containing hypochlorous acid that has escaped from the water diversion opening 19a to the drainage unit 42.

[0063] As a result, the hypochlorous acid generator 10 allows the water containing hypochlorous acid (hypochlorous acid water) that has overflowed from the first storage tank 20 to escape from the water diversion opening 19a to the first drain pan 19b, and can easily guide the water to the drain section 42. Therefore, even if the water containing hypochlorous acid overflows from the first storage tank 20, the water containing hypochlorous acid can be prevented from entering (leaking out of) unintended parts of the hypochlorous acid generator 10.

[0064] In addition, in this embodiment, the hypochlorous acid generator 10 is provided with a second storage tank 43 that is arranged below the first storage tank 20 and stores water containing hypochlorous acid that overflows without passing through the water diversion opening 19a, and a second drain pan 45 that guides water containing hypochlorous acid that overflows from the second storage tank 43 to the drain section 42.

[0065] As a result, the hypochlorous acid generator 10 stores water containing hypochlorous acid (hypochlorous acid water) that flows out of the first storage tank 20 without passing through the water diversion opening 19a in the second storage tank 43. Furthermore, the hypochlorous acid generator 10 can easily guide the water containing hypochlorous acid that overflows from the second storage tank 43 from the second drain pan 45 to the drainage section 42. Therefore, even if the water containing hypochlorous acid overflows from the first storage tank 20, the water containing hypochlorous acid can be prevented from entering (flowing out of) unintended parts of the hypochlorous acid generator 10.

[0066] In the present embodiment, the hypochlorous acid generator 10 is provided with a drainage channel 46 that guides water containing hypochlorous acid (hypochlorous acid water) that overflows from the second storage tank 43 to the drainage section 42. The second drain pan 45 has a recess 45a that is a part of the drainage channel 46 formed by contacting the first drain pan 19b.

[0067] As a result, the hypochlorous acid generator 10 can easily guide water containing hypochlorous acid (hypochlorous acid water) that overflows from the second storage tank 43 to the drain section 42 via the drain channel 46. Furthermore, the hypochlorous acid generator 10 can easily form the drain channel 46 by abutting the second drain pan 45, which has the recess 45a, against the first drain pan 19b. Therefore, even if the water containing hypochlorous acid overflows from the first storage tank 20, the water containing hypochlorous acid can be prevented from entering (leaking out) into unintended parts of the hypochlorous acid generator 10.

[0068] In the present embodiment, the first drain pan 19b provided in the hypochlorous acid generator 10 is disposed so as to be inclined in the direction of gravity toward the drainage section 42.

[0069] As a result, the hypochlorous acid generator 10 can use gravity to easily guide the water containing hypochlorous acid (hypochlorous acid water) that has overflowed from the first storage tank 20 from the first drain pan 19b to the drainage section 42. Therefore, even if the water containing hypochlorous acid overflows from the first storage tank 20, the water containing hypochlorous acid can be prevented from entering (flowing out of) unintended parts of the hypochlorous acid generator 10.

[0070] In the present embodiment, the second drain pan 45 provided in the hypochlorous acid generator 10 is disposed so as to be inclined in the direction of gravity toward the drainage section 42.

[0071] As a result, the hypochlorous acid generator 10 can use gravity to easily guide the water containing hypochlorous acid (hypochlorous acid water) that has overflowed from the second storage tank 43 from the second drain pan 45 (drainage channel 46) to the drainage section 42. Therefore, even if the water containing hypochlorous acid overflows from the first storage tank 20, the water containing hypochlorous acid can be prevented from entering (leaking out of) unintended parts of the hypochlorous acid generator 10. [Industrial Applicability]

[0072] The present disclosure is applicable to a hypochlorous acid generator in which water containing hypochlorous acid (hypochlorous acid water) may overflow from a storage tank, or a space purification system including a hypochlorous acid generator. [Explanation of symbols]

[0073] 1 chassis 2 Intake port 2a Intake port 2c Intake port 3 Air outlet 3a Air outlet 3c air outlet 8a Air 8c Air 9a Air 9c Air 5 Purifying Airway 10 Hypochlorous acid generator 11 HEPA filter 12 Purification conveying fan 14 Miniaturization section 19 Hypochlorous acid generator 19a Water escape opening 19b First drain pan 20 First storage tank 21 electrodes 23 Brine Tank 24 Brine transport pump 25 Check valve 26 Flow path 27 Outlet 28 Electrolyzed water transport section 29 Water pipe 30 Water supply section 30a Outlet 32 Brine Supply Section 34 Water stop section 36 Electrolysis area 38 Water supply channel 41 Control Unit 42 Drainage section 43 Second Reservoir 44 Frame 45 Second drain pan 45a recess 46 Drainage Channel 50 bottom 54 1st slope 55 Second slope 64a Duct 64c Duct 65a Indoor intake port 65c indoor intake 67 Duct 67a Low Reactivity Duct 67c Low Reactivity Duct 68a Indoor air outlet 68c indoor air outlet 62 Indoor Space 100 Space Purification System

Claims

1. A hypochlorous acid generating unit that generates hypochlorous acid; A drainage unit that drains the water containing hypochlorous acid, The hypochlorous acid generating unit is A first storage tank for storing water containing hypochlorous acid; A water escape opening for releasing the water containing hypochlorous acid that overflows from the first storage tank; A first drain pan that guides the water containing hypochlorous acid that has been released from the water-removal opening to the drainage section, A second storage tank is arranged below the first storage tank and stores the water containing hypochlorous acid that overflows without passing through the water escape opening; A hypochlorous acid generator comprising: a second drain pan that guides the water containing hypochlorous acid that overflows from the second storage tank to the drainage section.

2. A drainage channel is provided to guide the water containing hypochlorous acid that overflows from the second storage tank to the drainage section, The second drain pan is The hypochlorous acid generator according to claim 1, further comprising a recess that is a part of the drainage channel and is formed by contacting the first drain pan.

3. The first drain pan is The hypochlorous acid generator according to claim 1 or 2, which is disposed so as to be inclined in the direction of gravity toward the drainage section.

4. The second drain pan is The hypochlorous acid generator according to claim 1 , which is disposed at an angle in the direction of gravity toward the drainage section.

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