Water production equipment

Abstract

To provide a water producing device that prevents the propagation of bacteria in produced water. [Solution] The water production device 60 comprises a water production section 62 that produces water from moisture in the air that is taken in, a filter section 68 that purifies the water produced in the water production section 62 to produce purified water, a storage section 70 that stores the purified water, and a pump 66 that delivers the purified water from the storage section 70, and the purified water delivered by the pump 66 passes through the filter section 68 and is returned to the storage section 70. The storage section 70 has a suction pipe 706b that sucks up the purified water that has accumulated in the pump 66, and a supply pipe 706a that supplies the purified water that has passed through the filter section 68, and the tip of the supply pipe 706a is positioned higher than the tip of the suction pipe 706b.

Description

[Technical Field]

[0001] The present invention relates to a water production device. [Background technology]

[0002] Patent Document 1 discloses a water production device that includes a cooling unit that cools the air that is taken in, a water production tank that stores water condensed by the cooling unit, a water supply tank that stores water supplied from the outside, a pump unit that sucks in and delivers water stored in the water production tank or the water supply tank, a tank that stores water delivered by the pump unit, a water level sensor that detects the water level in the water production tank, and a control unit that causes the pump unit to suck in and deliver water stored in the water supply tank when the water level sensor detects a drop in the water level, and causes the pump unit to suck in and deliver water stored in the water production tank when the water level sensor does not detect a drop in the water level. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7188723 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a water producing apparatus that suppresses the propagation of bacteria in the produced water. [Means for solving the problem]

[0005] The invention described in claim 1 comprises a water production unit that produces water from moisture in the air taken in, a filter unit that purifies the water produced in the water production unit to produce purified water, a storage unit that stores the purified water, and a pump that draws the purified water from the storage unit, The storage unit has a suction tube for sucking the purified water accumulated in the pump, and a supply tube whose tip is located higher than the tip of the suction tube and for supplying the purified water that has passed through the filter unit, The aforementioned From the suction tube The purified water is sucked through the filter unit. Supplied from a supply pipe It is a water production device.

[0006]

[0007] Claim 2 The invention described in claim 1 In the water producing apparatus described above, the tip of the supply pipe is located higher than the highest water level of purified water stored in the reservoir.

[0008] Claim 3 The invention described in claim 1 or 2 In the water production apparatus described above, the storage section further has a storage tank that is rectangular in plan view, and the supply pipe and the suction pipe are each arranged at diagonal corners of the storage tank.

[0009] Claim 4 The invention described in claim 3 In the water production apparatus described above, the storage tank has a rectangular main storage section in which the purified water accumulates, and a cooling section located below the bottom surface of the main storage section for cooling the purified water, and the tip of the suction pipe is located at the bottom of the main storage section.

[0010] Claim 5 The invention described in claim 4 In the water making apparatus described above, the tip of the suction pipe is arranged at a position spaced a predetermined distance from the cooling section in a plan view.

[0011] Claim 6 The invention described in claim 3 In the water production apparatus described above, the storage tank has a rectangular parallelepiped main storage section in which the purified water is stored, and a cooling section provided on the bottom surface of the main storage section for cooling the purified water. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a water production apparatus in which the propagation of bacteria in the produced water is suppressed. [Brief explanation of the drawings]

[0013] [Figure 1]1 is an explanatory diagram schematically illustrating the configuration of a water making apparatus according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an external view of a storage tank provided in the water production apparatus. [Figure 3] 1(A) to 1(C) are a plan view, a front view, and a side view, respectively, showing the main part of the storage tank provided in the water production apparatus. [Figure 4] FIG. 4 is an explanatory diagram schematically showing the configuration of a water making apparatus according to a second embodiment of the present invention. [Figure 5] FIG. 2 is an external view of a storage tank provided in the water production apparatus. [Figure 6] 1(A) to 1(C) are a plan view, a front view, and a side view, respectively, showing the main part of the storage tank provided in the water production apparatus. DETAILED DESCRIPTION OF THE INVENTION

[0014] Next, embodiments of the present invention will be described with reference to the accompanying drawings to facilitate understanding of the present invention.

[0015] [First embodiment] As shown in FIG. 1, the water production device 10 according to the first embodiment of the present invention includes a water production section 12, a water production tank 14, a supply pump 16, a filter section 18, a purified water storage section 20, and a cold water pump 30.

[0016] The water production section 12 has a fan 122, a radiator 124, an evaporator 126, and a HEPA filter 128. The water production section 12 can cool and condense the air taken in by the fan 122 through the HEPA filter 128 in the evaporator 126. In other words, the water production section 12 can produce water from the moisture in the taken-in air.

[0017] The water preparation tank 14 can store the water produced by the water preparation unit 12. The water preparation tank 14 is provided with a water level sensor 142 for detecting the water level. The water level sensor 142 can detect predetermined water levels in stages. Specifically, the water level is detected in, for example, two stages. The water preparation tank 14 is also provided with an ultraviolet LED 144 for irradiating the interior with ultraviolet light.

[0018] The supply pump 16 can send out the water stored in the water tank 14 via an electromagnetic valve SV1. The supply pump 16 is, for example, a diaphragm pump.

[0019] The filter unit 18 is made up of a plurality of filters 18a to 18e, and can purify the water delivered by the supply pump 16. Specifically, the filter unit 18 can produce purified water by removing foreign matter, germs, etc. from the water and adjusting the components, such as minerals, contained in the water.

[0020] The purified water reservoir 20 stores the purified water produced by the filter unit 18 and can produce cold water. As shown in FIG. 2, the purified water storage unit 20 includes a storage tank 202, an ultraviolet LED 205, and a pipe unit 206.

[0021] The storage tank 202 is a tank that can store purified water and is composed of a tank body 203 and a lid 204 that covers the tank body 203. The outside of the tank body 203 and the lid 204 are covered with a heat insulating material (not shown). As shown in Figures 3(B) and 3(C), the tank body 203 is formed at least by a main storage section 203a having a rectangular parallelepiped outer shape and a cooling section 203b having a cylindrical outer shape, and one space is formed inside.

[0022] The main reservoir 203a stores a larger amount of purified water than the cooling portion 203b. The main reservoir 203a is provided with a water level sensor 207 (see FIG. 1) for detecting the water level. The water level sensor 207 can detect predetermined water levels in stages. Note that the water level sensor 207 is not shown in FIG. 2 and FIGS. 3(A) to 3(C).

[0023] As shown in Figure 3(B), cooling section 203b has a smaller volume than main reservoir 203a and is disposed below the bottom surface of main reservoir 203a. The purified water stored in cooling section 203b comes into contact with cooling coil 208 (see Figure 1) disposed inside cooling section 203b and is cooled. The water in cooling section 203b is cooled to, for example, 4 to 8°C and maintained at a temperature that inhibits the growth of bacteria. A temperature sensor 209 for measuring the water temperature is provided at the bottom of the cooling section 203b. The outer shape of the cooling section 203b is not limited to a cylindrical shape, but may be, for example, a rectangular parallelepiped shape.

[0024] A small vent hole is formed in the lid 204, and by opening to the atmosphere through this vent hole, the generation of negative pressure inside the storage tank 202 is suppressed.

[0025] The ultraviolet LED 205 is an LED (an example of a light source) that irradiates the inside of the storage tank 202 with ultraviolet light, and is provided at the center of the side surface 210a of the main storage section 203a. Anything within the range irradiated with ultraviolet light by the ultraviolet LED 205 is subjected to a sterilization process.

[0026] The pipe section 206 has a return pipe 206a and a nozzle 206b that extend in one direction. The return pipe 206a is a pipe that passes through the lid 204 in the vertical direction and extends to near the bottom of the main storage section 203a, and is a pipe for returning purified water sent out from the storage tank 202 to the storage tank 202, as described below.

[0027] 3(a), the return pipe 206a is arranged along the side surface 210b of the main storage section 203a (the surface facing the side surface 210a on which the ultraviolet LEDs 205 are provided) so as to face the ultraviolet LEDs 205 in a plan view. From another perspective, the return pipe 206a is arranged so that the normal to the inner side surface 210b of the storage tank 202 passes through the return pipe 206a and extends in the direction of the ultraviolet LEDs 205. That is, the return pipe 206a is arranged so that the area where ultraviolet light is blocked by the return pipe 206a is small.

[0028] Nozzle 206b is provided at the tip of return pipe 206a, and the tip faces in a direction intersecting the vertical direction (the direction in which return pipe 206a extends). More specifically, the tip of nozzle 206b preferably faces in a direction different from the direction in which cooling unit 203b is located and in a direction along side surface 210b in a plan view. Therefore, the purified water that is mainly in the main reservoir 203a is stirred by the purified water coming out of the nozzle 206b, and the stirred purified water is sterilized by the ultraviolet LEDs 205.

[0029] The cold water pump 30 can pump out the water stored in the storage tank 202. The cold water pump 30 is, for example, an axial flow pump.

[0030] As shown in FIG. 1, the water production device 10 further includes a hot water storage unit 40, a hot water pump 42, a water intake valve 44, and a control unit 49.

[0031] The hot water storage unit 40 has a hot water tank 402, a heater 404, and a temperature sensor 405, and can generate and store hot water. The hot water tank 402 is disposed at a lower position than the main storage section 203a, and purified water is supplied from the main storage section 203a. Because the hot water tank 402 is disposed at a lower position than the main storage section 203a, purified water flows into the hot water tank 402 without using a pump. The heater 404 is provided inside the hot water tank 402 and can heat the purified water therein to, for example, 60 to 90°C. The temperature sensor 405 can measure the temperature of the hot water inside the hot water tank 402 .

[0032] The hot water pump 42 can pump out hot water stored in the hot water tank 402. The hot water pump 42 is, for example, an axial flow pump.

[0033] The water intake valve 44 is an electromagnetic valve for discharging to the outside the cold water pumped by the cold water pump 30 or the hot water pumped by the hot water pump 42. When the cold water side of the water intake valve 44 is opened, cold water is discharged, and when the hot water side is opened, hot water is discharged.

[0034] The control unit 49 receives output signals from the water level sensors 142, 207 and the temperature sensors 209, 405, etc., and can control each part such as the water production unit 12, the supply pump 16, the cooling coil 208, the heater 404, the cold water pump 30, the hot water pump 42, the water intake valve 44, and each solenoid valve SV1 to SV3.

[0035] Next, the pipes extending from the purified water reservoir 20 and the hot water reservoir 40 will be described. Extending from the purified water reservoir 20 are a cold water delivery line L201, a purified water supply line L202, a purification line L203, and a drainage line L204.

[0036] 2, the chilled water delivery line L201 is a pipe extending from the bottom surface of the cooling section 203b to the chilled water pump 30. The pipe extending from the discharge side (downstream side) of the chilled water pump 30 branches into a chilled water supply line L205a and a return line L205b along the way. One of these, the chilled water supply line L205a, is connected to the water intake valve 44, and the other, the return line L205b, is connected to the return pipe 206a of the purified water storage section 20. The purified water supply line L202 is a pipe that extends from a hole formed in the bottom surface of the main storage section 203a to the bottom of the hot water tank 402.

[0037] The purification line L203 is a pipe that is connected from the bottom surface of the cooling section 203b to the suction side (downstream side) of the supply pump 16. The drain line L204 is a pipe for draining water that extends from the bottom surface of the cooling section 203b.

[0038] From the hot water storage section 40 extend a hot water delivery line L401, a steam line L402, and a drain line L403. The hot water delivery line L401 is a pipe extending from the top of the hot water tank 402 to the hot water pump 42. A hot water supply line L404 extending from the discharge side (downstream side) of the hot water pump 42 is connected to the water intake valve 44.

[0039] The steam line L402 is a pipe for returning steam generated inside the hot water tank 402 to the storage tank 202, and extends from the top of the hot water tank 402 to the lid 204 of the storage tank 202 as shown in FIG. The drain line L403 is a pipe extending from the bottom of the hot water tank 402 for drainage.

[0040] In the water production device 10 configured in this manner, ultraviolet rays are irradiated inside the storage tank 202, preventing the proliferation of bacteria inside the storage tank 202 and in the purified water. In addition, the cold water coming out of the storage tank 202 is circulated back to the storage tank 202 through the cold water delivery line L201, the cold water pump 30, and the return line L205b, thereby reducing the possibility of bacteria propagating in the path through which the cold water is supplied.

[0041] Next, we will explain the operation of the water production device 10. The water production device 10 operates according to the following steps Pa1 to Pa5. However, if possible, the order of steps Pa1 to Pa5 may be changed, they may be performed in parallel, or some of them may be omitted.

[0042] (Step Pa1) The control unit 49 operates the water production unit 12. When the water production unit 12 operates, ambient air is taken in, and water condensed in the evaporator 126 accumulates in the water production tank . The water level in the water preparation tank 14 is detected by a water level sensor 142 and monitored by the control unit 49.

[0043] (Step Pa2) The water stored in the water preparation tank 14 is purified through the filter unit 18 and supplied to the storage tank 202 as purified water. Instead of storing water in the water preparation tank 14 and supplying it, tap water can also be supplied from outside.

[0044] (Step Pa3) The purified water that enters the tank body 203 of the storage tank 202 first fills the cooling section 203b. The purified water that has accumulated in the cooling section 203b is cooled by the cooling coil 208. After the cooling section 203b is filled, the purified water is supplied to the hot water tank 402, which is located lower than the main storage section 203a, through the purified water supply line L202, and when the hot water tank 402 is filled, the purified water is stored in the main storage section 203a. The level of purified water stored in the main reservoir 203a is detected by a water level sensor 207, and the cold water pump 30 operates unless the water level is the lowest. When the cold water pump 30 operates, cold water circulates from the storage tank 202 through the cold water delivery line L201 and the return line L205b, and the cold water returned to the storage tank 202 is sterilized by ultraviolet light irradiated from the ultraviolet LED 205. As a result, the cold water flows through the flow path formed by the cold water delivery line L201, the cold water pump 30, and the return line L205b, thereby suppressing the propagation of bacteria.

[0045] (Step Pa4) This procedure Pa4 is an operational procedure in which the water making apparatus 10 supplies cold water to the outside. When the user presses a cold water button provided on an operation panel (not shown), the control unit 49 opens the cold water side of the water intake valve 44. As a result, part of the cold water that has been circulating from the storage tank 202 through the cold water delivery line L201 and the return line L205b is discharged to the outside.

[0046] (Step Pa5) This procedure Pa5 is an operational procedure in which the water making apparatus 10 supplies hot water to the outside. When the user presses a hot water button provided on an operation panel (not shown), the control unit 49 operates the hot water pump 42 and opens the hot water side of the water intake valve 44. As a result, the hot water stored in the hot water tank 402 is discharged to the outside.

[0047] As described above, the water making apparatus 10 according to this embodiment prevents the propagation of bacteria in the path through which cold water is supplied.

[0048] Second Embodiment Next, a water making apparatus 60 according to a second embodiment of the present invention will be described. As shown in FIG. 4, the water production device 60 according to the second embodiment of the present invention includes a water production section 62, a water production tank 64, a supply pump 66, a filter section 68, a purified water storage section 70, and a cold water pump 80.

[0049] The water production section 62 has a fan 622, a radiator 624, an evaporator 626, and a HEPA filter 628. The water production section 62 can cool and condense the air taken in by the fan 622 through the HEPA filter 628 in the evaporator 626. In other words, the water production section 62 can produce water from the moisture in the taken-in air.

[0050] The water preparation tank 64 can store the water produced by the water preparation unit 62. The water preparation tank 64 is provided with a water level sensor 642 for detecting the water level. The water level sensor 642 can detect predetermined water levels in stages. Specifically, the water level is detected in, for example, two stages. The water preparation tank 64 is also provided with an ultraviolet LED 644 for irradiating the interior with ultraviolet light.

[0051] The supply pump 66 can pump out the water stored in the water tank 64 via an electromagnetic valve SV6. The supply pump 66 is, for example, a diaphragm pump.

[0052] The filter unit 68 is made up of a plurality of filters 68a to 68e, and can purify the water sent out by the supply pump 66. Specifically, the filter unit 68 can produce purified water by removing foreign matter, germs, etc. from the water and adjusting the components, such as minerals, contained in the water.

[0053] The purified water reservoir (an example of a reservoir) 70 stores the purified water produced by the filter unit 68 and can produce cold water. As shown in FIG. 5, the purified water reservoir 70 includes a reservoir tank 702, an ultraviolet LED 705, a supply pipe 706a, and a suction pipe 706b.

[0054] The storage tank 702 is a tank that can store purified water and is composed of a tank body 703 and a lid 704 that covers the tank body 703. The outside of the tank body 703 and the lid 704 are covered with a heat insulating material (not shown). As shown in Figures 6(B) and 6(C), the tank body 703 is formed at least by a main storage section 703a having a rectangular parallelepiped outer shape and a cooling section 703b having a cylindrical outer shape, and one space is formed inside.

[0055] Main reservoir 703a stores a larger amount of purified water than cooling portion 703b. Main reservoir 703a is provided with water level sensor 707 for detecting the water level. Water level sensor 707 can detect predetermined water levels in stages.

[0056] As shown in Figure 6(B), cooling section 703b has a smaller volume than main reservoir 703a and is disposed below the bottom surface of main reservoir 703a. The purified water stored in cooling section 703b comes into contact with cooling coil 708 (see Figure 4) disposed inside cooling section 703b and is cooled. The water in cooling section 703b is cooled to, for example, 4 to 8°C. A temperature sensor 709 for measuring the water temperature is provided at the bottom of the cooling section 703b. The outer shape of the cooling section 703b is not limited to a cylindrical shape, but may be, for example, a rectangular parallelepiped shape.

[0057] A small vent hole H704 (see FIG. 5) is formed in the lid 704, and the storage tank 702 is opened to the atmosphere through this vent hole H704, thereby preventing negative pressure from being generated inside the storage tank 702.

[0058] The ultraviolet LED 705 is an LED (an example of a light source) that irradiates the inside of the storage tank 702 with ultraviolet light, and is provided at the center of the side surface of the main storage section 703a. Anything within the range irradiated with ultraviolet light by the ultraviolet LED 705 is subjected to a sterilization process.

[0059] Supply pipe 706a is a pipe for supplying purified water that has passed through filter section 68 to storage tank 702, and is arranged at a corner of main storage section 703a in plan view. The upper end of supply pipe 706a is fixed to lid 704, and the lower end of supply pipe 706a is located higher than the highest water level of purified water stored in main reservoir 703a and higher than the tip of suction pipe 706b.

[0060] The suction pipe 706b is connected to the purification line L703 described later, and is a pipe through which the supply pump 66 sucks up purified water accumulated in the main storage section 703a. When viewed from above, it is located at a corner of the main storage section 703a, diagonally opposite the corner where the supply pipe 706a is located. The upper end of the suction tube 706b is fixed to the lid 704, and the lower end of the suction tube 706b is located at the bottom of the main reservoir 703a and is located a predetermined distance away from the cooling section 703b in a plan view.

[0061] The cold water pump 80 can pump out the water stored in the storage tank 702. The cold water pump 80 is, for example, an axial flow pump.

[0062] As shown in FIG. 4, the water production device 60 further includes a hot water storage unit 90, a hot water pump 92, a water intake valve 94, and a control unit 99.

[0063] The hot water storage unit 90 has a hot water tank 902, a heater 904, and a temperature sensor 905, and can generate and store hot water. The hot water tank 902 is disposed at a lower position than the main storage section 703a, and purified water is supplied from the main storage section 703a. Because the hot water tank 902 is disposed at a lower position than the main storage section 703a, purified water flows into the hot water tank 902 without using a pump. The heater 904 is provided inside the hot water tank 902 and can heat the purified water therein to, for example, 60 to 90°C. The temperature sensor 905 can measure the temperature of the hot water inside the hot water tank 902 .

[0064] The hot water pump 92 can pump out hot water stored in the hot water tank 902. The hot water pump 92 is, for example, an axial flow pump.

[0065] The water intake valve 94 is an electromagnetic valve for discharging to the outside the cold water pumped by the cold water pump 80 or the hot water pumped by the hot water pump 92. When the cold water side of the water intake valve 94 is opened, cold water is discharged, and when the hot water side is opened, hot water is discharged.

[0066] The control unit 99 receives output signals from the water level sensors 642, 707 and the temperature sensors 709, 905, etc., and can control various parts such as the water production unit 62, the supply pump 66, the cooling coil 708, the heater 904, the cold water pump 80, the hot water pump 92, the water intake valve 94, and the solenoid valves SV6, SV7.

[0067] Next, the pipes extending from the purified water reservoir 70 and the hot water reservoir 90 will be described. Extending from the purified water reservoir 70 are a cold water delivery line L701, a purified water supply line L702, a purification line L703, and a drainage line L704.

[0068] 5, the cold water delivery line L701 is a pipe extending from the bottom surface of the cooling section 703b to the cold water pump 80. A cold water supply line L705 extending from the discharge side (downstream side) of the cold water pump 80 is connected to the water intake valve 94.

[0069] The purified water supply line L702 is a pipe that extends from a hole formed in the bottom surface of the main storage section 703a to the bottom of the hot water tank 902.

[0070] The purification line L703 is a pipe that extends from the suction pipe 706b, passes through the electromagnetic valve SV7, and joins the downstream side of the electromagnetic valve SV6 and the upstream side (suction side) of the supply pump 66. The drain line L704 is a pipe for draining water that extends from the bottom surface of the cooling section 703b.

[0071] Extending from the hot water reservoir 90 are a hot water delivery line L901, a steam line L902, and a drain line L903.

[0072] The hot water delivery line L901 is a pipe extending from the top of the hot water tank 902 to the hot water pump 92. A hot water supply line L904 extending from the discharge side (downstream side) of the hot water pump 92 is connected to the water intake valve 94.

[0073] The steam line L902 is a pipe for returning steam generated inside the hot water tank 902 to the storage tank 702, and extends from the top of the hot water tank 902 to a connection port 712 (see Figure 5) provided on the upper side of the tank body 703. The drain line L903 is a pipe for draining water that extends from the bottom of the hot water tank 902.

[0074] In the water production apparatus 60 configured in this manner, ultraviolet rays are irradiated inside the storage tank 702, suppressing the propagation of bacteria inside the storage tank 702 and in the purified water. In addition, the supply pump 66 circulates the cold water discharged from the storage tank 702 so that it passes through the purification line L703 and filter unit 68, where it is purified, and then returns to the storage tank 702, suppressing the propagation of bacteria in the storage tank 702.

[0075] Next, we will explain the operation of the water production device 60. The water production device 60 operates according to the following steps Pb1 to Pb5. However, if possible, the order of steps Pb1 to Pb5 may be changed, they may be performed in parallel, or some of them may be omitted.

[0076] (Step Pb1) A user turns on the power of the water production device 60. When the water level sensor 707 detects that the storage tank 702 is empty, the electromagnetic valves SV6 and SV7 close. Meanwhile, the water production section 62 is operated, air around the water production device 60 is taken in, and water condensed in the evaporator 626 is accumulated in the water production tank 64 . The water level in the water preparation tank 64 is detected by a water level sensor 642 and monitored by the control unit 99 .

[0077] (Step Pb2) When it is detected that water has accumulated in the water tank 64, the electromagnetic valve SV6 opens, the electromagnetic valve SV7 closes, and the supply pump 66 operates. As a result, the water stored in the water preparation tank 64 is purified by passing it through the filter unit 68 by the supply pump 66 and is supplied to the storage tank 702 as purified water. Instead of storing water in the water preparation tank 64 and supplying it, tap water can also be supplied from outside.

[0078] (Step Pb3) The purified water that has entered the tank body 703 of the storage tank 702 first fills the cooling section 703b. The purified water that has accumulated in the cooling section 703b is cooled by the cooling coil 708. After the cooling section 703b is filled, the purified water is supplied to the hot water tank 902, which is located lower than the main storage section 703a, through the purified water supply line L702, and when the hot water tank 902 is filled, the purified water is stored in the main storage section 703a. The level of purified water accumulated in the main reservoir 703a is detected by a water level sensor 707, and when the purified water accumulates to a predetermined level, the electromagnetic valve SV6 closes and the electromagnetic valve SV7 opens. In this state, the supply pump 66 operates, and purified water circulates from the reservoir tank 702 through the purification line L703, the supply pump 66, and the filter unit 68. The minimum water level detected by water level sensor 707 is set to a position higher than the tip of suction tube 706b. Therefore, even if water level sensor 707 detects the minimum water level, purified water remains in main reservoir 703a, and the circulation of purified water continues.

[0079] As described above, supply pipe 706a and suction pipe 706b are respectively arranged at diagonally opposite corners of main reservoir 703a in plan view, and the heights of their tip positions are different. Therefore, since the tip of supply pipe 706a and the tip of suction pipe 706b are positioned apart from each other, purified water discharged from supply pipe 706a is prevented from being immediately sucked into suction pipe 706b, which reduces the possibility that only part of the water in storage tank 702 is purified.

[0080] In this way, in the water production device 60, the purified water stored in the storage tank 702 is circulated and repeatedly purified by the filter unit 68, and is also subjected to a sterilization treatment by ultraviolet light irradiated from the ultraviolet LEDs 705.

[0081] (Step Pb4) This procedure Pb4 is an operational procedure in which the water production device 60 supplies cold water to the outside. When the user presses the cold water button provided on the operation panel (not shown), the cold water pump 80 operates and the cold water side of the water intake valve 94 opens. As a result, the cold water stored in the cooling section 703b of the storage tank 702 passes through the cold water delivery line L701 and the cold water supply line L705 and is discharged to the outside.

[0082] (Step Pb5) This procedure Pb5 is an operational procedure in which the water production device 60 supplies hot water to the outside. When the user presses the hot water button provided on the operation panel (not shown), the hot water pump 92 operates and the hot water side of the water intake valve 94 opens. As a result, the hot water stored in the hot water tank 902 passes through the hot water delivery line L901 and the hot water supply line L904 and is discharged to the outside. When the water level sensor 707 detects that the water level is at the lowest level, cold water and hot water will not be discharged until the water level returns to a predetermined height.

[0083] As described above, the water production apparatus 60 according to this embodiment prevents the proliferation of bacteria in the produced purified water.

[0084] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions that do not depart from the gist of the present invention are within the scope of application of the present invention. [Explanation of symbols]

[0085] 10 Water production equipment 12 Water production department 14 Water Tank 16 Supply pump 18 Filter section 18a~18e filters 20 Purified water storage section 30 Chilled water pump 40 Hot water storage section 42 Hot water pump 44 Water intake valve 49 Control Unit 60 Water production equipment 62 Water production department 64 Water Tank 66 Supply Pump 68 Filter section 68a~68e filters 70 Purified water storage section 80 Chilled water pump 90 Hot water storage section 92 Hot water pump 94 Water intake valve 99 Control Unit 122 fans 124 Heat sink 126 Evaporator 128 HEPA filter 142 Water level sensor 144 UV LED 202 Storage Tank 203 Tank body 203a Main reservoir 203b Cooling section 204 Lid 205 UV LED 206 Pipe section 206a Return pipe 206b Nozzle 207 Water level sensor 208 Cooling coil 209 Temperature Sensor 210a, 210b side 402 Hot Water Tank 404 Heater 405 Temperature Sensor 622 fans 624 Heat sink 626 Evaporator 628 HEPA Filter 642 Water level sensor 644 UV LED 702 Storage Tank 703 Tank body 703a Main reservoir 703b Cooling section 704 Lid 705 UV LED 706a supply pipe 706b suction tube 707 Water Level Sensor 708 Cooling coil 709 Temperature Sensor 712 Connection port 902 Hot water tank 904 Heater 905 Temperature Sensor H704 Ventilation hole L201 Chilled water delivery line L202 Purified water supply line L203 Purification Line L204 Drain line L205a Chilled water supply line L205b feedback line L401 Hot water delivery line L402 Steam Line L403 Drain line L404 Hot water supply line L701 Chilled water delivery line L702 purified water supply line L703 Purification Line L704 Drain line L705 Chilled water supply line L901 Hot water delivery line L902 Steam Line L903 Drain line L904 Hot water supply line SV1~SV3 solenoid valves SV6, SV7 solenoid valves

Claims

1. a water production unit that generates water from the moisture in the air that has been taken in; a filter unit that purifies the water produced in the water production unit and produces purified water; a reservoir for storing the purified water; a pump for drawing purified water from the reservoir; The storage unit has a suction pipe for sucking the purified water accumulated by the pump; a supply pipe whose tip is located higher than the tip of the suction pipe and which supplies purified water that has passed through the filter unit; The water producing device has purified water sucked through the suction pipe, which passes through the filter section and is supplied from the supply pipe.

2. 2. The water producing apparatus according to claim 1, wherein the tip of the supply pipe is located higher than the highest level of purified water stored in the reservoir.

3. The storage unit further includes a storage tank having a rectangular shape in a plan view, 3. The water producing apparatus according to claim 1, wherein the supply pipe and the suction pipe are respectively arranged at diagonally opposite corners of the storage tank.

4. The storage tank has a rectangular parallelepiped main storage section in which the purified water is stored, A cooling unit provided below the bottom surface of the main storage unit and cooling the purified water, 4. The water producing apparatus according to claim 3, wherein the tip of the suction pipe is located at the bottom of the main reservoir.

5. 5. The water producing apparatus according to claim 4, wherein the tip of the suction pipe is disposed at a position spaced a predetermined distance from the cooling section in a plan view.

6. The storage tank has a rectangular parallelepiped main storage section in which the purified water is stored, 4. The water producing apparatus according to claim 3, further comprising a cooling section provided on the bottom surface of the main reservoir section for cooling the purified water.

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