Water production equipment

Abstract

The present invention provides a water production system that suppresses the growth of bacteria in the generated water. [Solution] The water production device 60 comprises a water production unit 62 that generates water from moisture in the air taken in, a filter unit 68 that purifies the water generated in the water production unit 62 to produce purified water, a storage unit 70 in which the purified water is stored, and a pump 66 that sends out the purified water from the storage unit 70. The purified water sent out by the pump 66 passes through the filter unit 68 and is returned to the storage unit 70. The storage unit 70 has a suction pipe 706b for the pump 66 to draw in the stored purified water and a supply pipe 706a for supplying the purified water that has passed through the filter unit 68, with the tip of the supply pipe 706a being higher than the tip of the suction pipe 706b.

Description

Technical Field

[0001] The present invention relates to a water producing apparatus.

Background Art

[0002] Patent Document 1 discloses a water producing apparatus. This water producing apparatus includes a cooling unit that cools taken-in air, a water producing 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 the water stored in the water producing tank or the water supply tank, a tank that stores the water delivered by the pump unit, a water level sensor that detects the water level of the water producing tank, and a control unit that, when the water level sensor detects a drop in the water level, causes the pump unit to suck in and deliver the water stored in the water supply tank, and when the water level sensor does not detect a drop in the water level, causes the pump unit to suck in and deliver the water stored in the water producing tank.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of Invention

Problem to be Solved by the Invention

[0004] An object of the present invention is to provide a water producing apparatus in which propagation of various bacteria in generated water is suppressed.

Means for Solving the Problem

[0005] The invention according to Claim 1 includes: a water producing unit that generates water from moisture in taken-in air; a filter unit that purifies the water generated by the water producing unit to generate purified water; a storage unit in which the purified water is stored; and a pump for sucking the purified water from the storage unit. The storage section includes a suction pipe for the pump to draw in the accumulated purified water, and a supply pipe whose tip is located higher than the tip of the suction pipe, for supplying the purified water that has passed through the filter section. The From the suction tube Sucked purified water passes through the filter unit to the Supplied from the supply pipe water producing apparatus.

[0006]

[0007] Claim 2 The invention described in the claim 1 In the water production apparatus described above, the tip of the supply pipe is located at a position higher than the highest water level of purified water accumulated in the storage section.

[0008] Claim 3 The invention described in the claim 1 or 2 In the water production apparatus described above, the storage section further comprises a storage tank that is rectangular in shape when viewed from above, and the supply pipe and the suction pipe are each located at diagonal corners of the storage tank.

[0009] Claim 4 The invention described in the 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 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 the claim 4 In the water production apparatus described above, the tip of the suction pipe is positioned at a predetermined distance from the cooling section when viewed from above.

[0011] Claim 6 The invention described in the claim 3 In the water production apparatus described above, the storage tank comprises 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 device in which the proliferation of bacteria in the generated water is suppressed. [Brief explanation of the drawing]

[0013] [Figure 1]FIG. 1 is an explanatory view schematically showing the configuration of a water producing apparatus according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an external view of a storage tank included in the same water producing apparatus. [Figure 3] (A) to (C) are respectively a plan view, a front view, and a side view showing main parts of the storage tank included in the same water producing apparatus. [Figure 4] FIG. 3 is an explanatory view schematically showing the configuration of a water producing apparatus according to a second embodiment of the present invention. [Figure 5] FIG. 4 is an external view of a storage tank included in the same water producing apparatus. [Figure 6] (A) to (C) are respectively a plan view, a front view, and a side view showing main parts of the storage tank included in the same water producing apparatus. [Mode for Carrying Out the Invention]

[0014] Hereinafter, embodiments for embodying 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, a water producing apparatus 10 according to the first embodiment of the present invention includes a water producing unit 12, a water producing tank 14, a supply pump 16, a filter unit 18, a purified water storage unit 20, and a cold water pump 30.

[0016] The water producing unit 12 has a fan 122, a radiator 124, an evaporator 126, and a HEPA filter 128. The water producing unit 12 can cool the air taken in by the fan 122 through the HEPA filter 128 with the evaporator 126 to cause condensation. That is, the water producing unit 12 can generate water from the moisture in the taken-in air.

[0017] The water producing tank 14 can store the water generated by the water producing unit 12. The water tank 14 is equipped 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 tank 14 is also equipped with an ultraviolet LED 144 for irradiating ultraviolet light inside.

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

[0019] The filter unit 18 is composed of multiple filters 18a to 18e and can purify the water supplied by the supply pump 16. Specifically, the filter unit 18 can produce purified water by removing foreign matter and bacteria from the water and adjusting the mineral content and other components in the water.

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

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

[0022] The main storage section 203a stores a larger amount of purified water than the cooling section 203b. The main storage section 203a is equipped with a water level sensor 207 (see Figure 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 Figures 2 and 3(A) to 3(C).

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

[0024] The lid 204 has small ventilation holes, and by releasing air to the atmosphere through these holes, the creation 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 ultraviolet light into the inside of the storage tank 202, and is located in the center of the side surface 210a of the main storage section 203a. Anything within the area irradiated by ultraviolet light from the ultraviolet LED 205 will be sterilized.

[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 extends vertically through the lid 204 to the vicinity of the bottom surface of the main storage section 203a, and as will be described later, it is a pipe for returning the purified water discharged from the storage tank 202 back to the storage tank 202.

[0027] As shown in Figure 3(a), the return pipe 206a is positioned along the side surface 210b of the main storage section 203a (the surface opposite to the side surface 210a on which the ultraviolet LED 205 is installed) so that it faces the ultraviolet LED 205 when viewed from above. From another perspective, the return pipe 206a is positioned such that the normal to the inner side surface 210b of the storage tank 202 extends through the return pipe 206a in the direction of the ultraviolet LED 205. In other words, the return tube 206a is positioned such that the area over which ultraviolet light is blocked by the return tube 206a is minimized.

[0028] The nozzle 206b is provided at the tip of the return pipe 206a, and its tip is oriented in a direction that intersects the vertical direction (the direction in which the return pipe 206a extends). More specifically, it is preferable that the tip of the nozzle 206b, when viewed from above, is oriented in a direction different from the direction in which the cooling section 203b is located, and is oriented along the side surface 210b. Therefore, the purified water discharged from the nozzle 206b primarily agitates the purified water in the main storage section 203a, and the agitated purified water is sterilized by the ultraviolet LED 205.

[0029] The chilled water pump 30 can deliver the water accumulated in the storage tank 202. The chilled water pump 30 is, for example, an axial flow pump.

[0030] As shown in Figure 1, the water production device 10 further comprises 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 includes a hot water tank 402, a heater 404, and a temperature sensor 405, and is capable of generating and storing hot water. The hot water tank 402 is positioned lower than the main storage unit 203a, and purified water is supplied from the main storage unit 203a. Because the hot water tank 402 is positioned lower than the main storage unit 203a, the purified water flows into the hot water tank 402 without the need for a pump. The heater 404 is installed inside the hot water tank 402 and can heat the purified water inside to, for example, 60-90°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 deliver the hot water stored in the hot water tank 402. The hot water pump 42 is, for example, an axial flow pump.

[0033] The intake valve 44 is a solenoid valve for discharging cold water supplied by the cold water pump 30 or hot water supplied by the hot water pump 42 to the outside. When the cold water side of the 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 water level sensors 142 and 207 and temperature sensors 209 and 405, and can control various parts such as the water production unit 12, supply pump 16, cooling coil 208, heater 404, chilled water pump 30, hot water pump 42, intake valve 44, and each solenoid valve SV1 to SV3.

[0035] Next, we will describe the piping extending from the purified water storage section 20 and the hot water storage section 40, respectively. From the purified water storage section 20, the chilled water delivery line L201, the purified water supply line L202, the purification line L203, and the drainage line L204 extend.

[0036] As shown in Figure 2, the chilled water delivery line L201 is a pipe that extends from the bottom of the cooling unit 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. One of these, the chilled water supply line L205a, is connected to the intake valve 44, and the other, the return line L205b, is connected to the return pipe 206a of the purified water storage unit 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 connects from the bottom of the cooling unit 203b to the suction side (downstream side) of the supply pump 16. Drainage line L204 is a drainage pipe extending from the bottom surface of the cooling unit 203b.

[0038] From the hot water storage section 40, the hot water discharge line L401, the steam line L402, and the drainage line L403 extend. The hot water delivery line L401 is a pipe that extends from the top of the hot water tank 402 to the hot water pump 42. The hot water supply line L404, which extends from the discharge side (downstream side) of the hot water pump 42, is connected to the 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 Figure 2. Drainage line L403 is a drainage pipe that extends from the bottom of the hot water tank 402.

[0040] In the water production system 10 configured in this way, ultraviolet light is irradiated into the storage tank 202, suppressing the growth of bacteria inside the storage tank 202 and in the purified water. Furthermore, the chilled water that leaves the storage tank 202 is circulated back to the storage tank 202 through the chilled water delivery line L201, the chilled water pump 30, and the return line L205b, thus reducing the possibility of bacteria growing in the chilled water supply path.

[0041] Next, the operation of the water production device 10 will be described. The water production device 10 operates according to the following procedures Pa1 to Pa5. However, if possible, each procedure Pa1 to Pa5 may be performed in a different order, performed in parallel, or partially omitted.

[0042] (Procedure Pa1) The control unit 49 activates the water production unit 12. When the water production unit 12 is activated, ambient air is drawn in, and the water condensed in the evaporator 126 is collected in the water production tank 14. The water level in the water tank 14 is detected by the water level sensor 142 and monitored by the control unit 49.

[0043] (Procedure Pa2) The water accumulated in the water production tank 14 is purified by passing through the filter section 18 and supplied as purified water to the storage tank 202. Alternatively, instead of storing and supplying water from the water production tank 14, it is also possible to supply tap water from an external source.

[0044] (Procedure Pa3) The purified water in the tank body 203 of the storage tank 202 first fills the cooling section 203b. The purified water accumulated in the cooling section 203b is cooled by the cooling coil 208. After the cooling section 203b is full, the purified water is supplied through the purified water supply line L202 to the hot water tank 402, which is located lower than the main storage section 203a, and once the hot water tank 402 is full, it is stored in the main storage section 203a. The water level of the purified water accumulated in the main storage section 203a is detected by the water level sensor 207, and the chilled water pump 30 operates unless the water level is at its lowest point. When the chilled water pump 30 is in operation, chilled water circulates from the storage tank 202 through the chilled water delivery line L201 and the return line L205b. The chilled water that returns to the storage tank 202 is sterilized by ultraviolet light irradiated from the ultraviolet LED 205. As a result, cold water flows through the channels formed by the cold water delivery line L201, the cold water pump 30, and the return line L205b, thereby suppressing the growth of bacteria.

[0045] (Procedure Pa4) Procedure Pa4 describes the operation procedure for the water production device 10 to supply chilled water to the outside. When the user presses the cold water button on the control panel (not shown), the control unit 49 opens the cold water side of the water intake valve 44. As a result, some of the chilled water that was circulating from the storage tank 202 through the chilled water delivery line L201 and the return line L205b is discharged to the outside.

[0046] (Procedure Pa5) Procedure Pa5 describes the operation procedure for the water production device 10 to supply hot water to the outside. When the user presses the hot water button on the control 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 production device 10 according to this embodiment suppresses the growth of bacteria in the path that supplies cold water.

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

[0049] The water production unit 62 includes a fan 622, a heat sink 624, an evaporator 626, and a HEPA filter 628. The water production unit 62 cools the air taken in by the fan 622 through the HEPA filter 628 using the evaporator 626, causing condensation. In other words, the water production unit 62 can generate water from the moisture in the taken-in air.

[0050] The water tank 64 can store the water produced by the water production unit 62. The water tank 64 is equipped 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 tank 64 is also equipped with an ultraviolet LED 644 for irradiating the inside with ultraviolet light.

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

[0052] The filter unit 68 is composed of multiple filters 68a to 68e and can purify the water supplied by the supply pump 66. Specifically, the filter unit 68 can produce purified water by removing foreign matter and bacteria from the water and adjusting the mineral content and other components in the water.

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

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

[0055] The main storage section 703a stores a larger amount of purified water than the cooling section 703b. The main storage section 703a is equipped with a water level sensor 707 for detecting the water level. The water level sensor 707 can detect predetermined water levels in stages.

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

[0057] The lid 704 has small ventilation holes H704 (see Figure 5), and by venting to the atmosphere through these ventilation holes H704, the creation of negative pressure inside the storage tank 702 is suppressed.

[0058] The ultraviolet LED 705 is an LED (an example of a light source) that irradiates ultraviolet light into the inside of the storage tank 702, and is located in the center of the side of the main storage section 703a. Anything within the area irradiated by ultraviolet light from the ultraviolet LED 705 will be sterilized.

[0059] The supply pipe 706a is a pipe for supplying purified water that has passed through the filter section 68 to the storage tank 702, and is located at the corner of the main storage section 703a when viewed from above. The upper end of the supply pipe 706a is fixed to the lid 704, and the lower end of the supply pipe 706a is positioned higher than the highest water level of purified water accumulated in the main storage section 703a, and also higher than the tip of the suction pipe 706b.

[0060] The suction pipe 706b is connected to the purification line L703, which will be described later, and is a pipe for the supply pump 66 to draw purified water accumulated in the main storage section 703a. In a plan view, 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 storage section 703a, and is also located at a predetermined distance from the cooling section 703b when viewed from above.

[0061] The chilled water pump 80 can deliver the water accumulated in the storage tank 702. The chilled water pump 80 is, for example, an axial flow pump.

[0062] As shown in Figure 4, the water production device 60 further comprises 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 includes a hot water tank 902, a heater 904, and a temperature sensor 905, and is capable of generating and storing hot water. The hot water tank 902 is positioned lower than the main storage unit 703a, and purified water is supplied from the main storage unit 703a. Because the hot water tank 902 is positioned lower than the main storage unit 703a, the purified water flows into the hot water tank 902 without the need for a pump. The heater 904 is installed inside the hot water tank 902 and can heat the purified water inside to, for example, 60-90°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 deliver the hot water stored in the hot water tank 902. The hot water pump 92 is, for example, an axial flow pump.

[0065] The intake valve 94 is a solenoid valve for discharging cold water supplied by the cold water pump 80 or hot water supplied by the hot water pump 92 to the outside. When the cold water side of the 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 water level sensors 642 and 707 and temperature sensors 709 and 905, and can control various parts such as the water production unit 62, supply pump 66, cooling coil 708, heater 904, chilled water pump 80, hot water pump 92, intake valve 94, and solenoid valves SV6 and SV7.

[0067] Next, we will describe the piping extending from the purified water storage section 70 and the hot water storage section 90, respectively. From the purified water storage section 70, the chilled water delivery line L701, the purified water supply line L702, the purification line L703, and the drainage line L704 extend.

[0068] As shown in Figure 5, the chilled water delivery line L701 is a pipe that extends from the bottom of the cooling unit 703b to the chilled water pump 80. The chilled water supply line L705, which extends from the discharge side (downstream side) of the chilled water pump 80, is connected to the 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 solenoid valve SV7, and joins the downstream side of the solenoid valve SV6 and the upstream side (suction side) of the supply pump 66. Drainage line L704 is a drainage pipe extending from the bottom surface of cooling unit 703b.

[0071] From the hot water storage section 90, the hot water delivery line L901, the steam line L902, and the drainage line L903 extend.

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

[0073] The steam line L902 is a pipe that returns 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) located on the upper side of the tank body 703. Drainage line L903 is a drainage pipe extending from the bottom of the hot water tank 902.

[0074] In the water production system 60 configured in this way, ultraviolet light is irradiated into the storage tank 702, suppressing the growth of bacteria inside the storage tank 702 and in the purified water. In addition, the chilled water that leaves the storage tank 702 is circulated by the supply pump 66 so that it is purified by passing through the purification line L703 and the filter section 68 before returning to the storage tank 702, thereby suppressing the growth of bacteria in the storage tank 702.

[0075] Next, the operation of the water production device 60 will be described. The water production device 60 operates according to the following procedures Pb1 to Pb5. However, if possible, each procedure Pb1 to Pb5 may be performed in a different order, performed in parallel, or partially omitted.

[0076] (Procedure Pb1) The user turns on the power to the water production device 60. When the water level sensor 707 detects that the storage tank 702 is empty, the solenoid valves SV6 and SV7 close. Meanwhile, the water production unit 62 operates, drawing in air from around the water production device 60, and the water condensed in the evaporator 626 accumulates in the water production tank 64. The water level in the water tank 64 is detected by the water level sensor 642 and monitored by the control unit 99.

[0077] (Procedure Pb2) When it is detected that water has accumulated in the water tank 64, the electromagnetic valve SV6 opens, SV7 closes, and the supply pump 66 starts operating. As a result, the water accumulated in the water tank 64 is purified by the supply pump 66 through the filter section 68 and supplied as purified water to the storage tank 702. Alternatively, instead of storing and supplying water from the water production tank 64, it is also possible to supply tap water from an external source.

[0078] (Procedure Pb3) The purified water in the tank body 703 of the storage tank 702 first fills the cooling section 703b. The purified water accumulated in the cooling section 703b is cooled by the cooling coil 708. After the cooling section 703b is full, the purified water is supplied through the purified water supply line L702 to the hot water tank 902, which is located lower than the main storage section 703a, and once the hot water tank 902 is full, it is stored in the main storage section 703a. The water level of the purified water accumulated in the main storage section 703a is detected by the water level sensor 707. When the purified water reaches 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 storage tank 702 through the purification line L703, the supply pump 66, and the filter section 68. Furthermore, the minimum water level detected by the water level sensor 707 is set to a position higher than the tip of the suction pipe 706b. Therefore, even if the water level sensor 707 detects that the minimum water level has been reached, purified water remains in the main storage unit 703a, and the circulation of purified water continues.

[0079] As mentioned above, the supply pipe 706a and the suction pipe 706b are positioned at diagonal corners of the main storage section 703a when viewed from above, and their tip positions are at different heights. Therefore, since the tip of the supply pipe 706a and the tip of the suction pipe 706b are positioned far apart from each other, the purified water discharged from the supply pipe 706a is prevented from being immediately drawn in by the suction pipe 706b. In other words, the possibility that only a portion of the water in the storage tank 702 will be purified is reduced.

[0080] Thus, in the water production device 60, the purified water accumulated in the storage tank 702 is circulated and repeatedly purified in the filter section 68, and is also sterilized by ultraviolet light irradiated from the ultraviolet LED 705.

[0081] (Procedure Pb4) Procedure Pb4 describes the operation procedure for the water production device 60 to supply chilled water to the outside. When the user presses the cold water button on the control 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 chilled water stored in the cooling section 703b of the storage tank 702 is discharged to the outside through the chilled water discharge line L701 and the chilled water supply line L705.

[0082] (Procedure Pb5) Procedure Pb5 describes the operation procedure for the water treatment device 60 to supply hot water to the outside. When the user presses the hot water button on the control 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 is discharged to the outside through the hot water discharge line L901 and the hot water supply line L904. Furthermore, if the water level sensor 707 detects that the water level is at its lowest level, cold and hot water will not be dispensed until the water level recovers to a predetermined height.

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

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

[0085] 10 Water production equipment 12 Water production department 14 Water production tank 16. Supply pump 18 Filter section 18a~18e Filters 20. Water purification storage unit 30 Cold 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 Water purification storage unit 80 Cold 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 storage section 203b Cooling section 204 Lid 205 UV LED 206 Pipe section 206a return tube 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 storage section 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 ports 902 Hot water tank 904 Heater 905 Temperature Sensor H704 Ventilation holes L201 Chilled water delivery line L202 Water purification supply line L203 Purification Line L204 Drainage Line L205a Chilled water supply line L205b Return Line L401 Hot water supply line L402 Steam Line L403 Drainage Line L404 Hot water supply line L701 Chilled water delivery line L702 Water purification supply line L703 Purification Line L704 Drainage Line L705 Chilled Water Supply Line L901 Hot water supply line L902 Steam Line L903 Drainage Line L904 Hot water supply line SV1~SV3 Solenoid Valve SV6, SV7 Solenoid Valves

Claims

1. A water production unit that generates water from moisture in the air it takes in, A filter unit that purifies the water produced in the aforementioned water production unit to produce purified water, A storage section in which the purified water is stored, The system includes a pump for drawing purified water from the storage section, A water production apparatus in which purified water drawn in by the pump is returned to the storage section after passing through the filter section.

2. The storage section includes a suction pipe for the pump to draw up the purified water that has accumulated, It has a supply pipe for supplying purified water that has passed through the filter section, The water production apparatus according to claim 1, wherein the tip of the supply pipe is located higher than the tip of the suction pipe.

3. The water production apparatus according to claim 2, wherein the tip of the supply pipe is located at a position higher than the highest water level of purified water accumulated in the storage section.

4. The aforementioned storage section further comprises a storage tank that is rectangular in shape when viewed from above. The water production apparatus according to claim 3, wherein the supply pipe and the suction pipe are each arranged at diagonally opposite corners of the storage tank.

5. The storage tank comprises a rectangular parallelepiped main storage section in which the purified water is collected, It has a cooling section provided below the bottom surface of the main storage section for cooling the purified water, The water production apparatus according to claim 4, wherein the tip of the suction pipe is located at the bottom of the main storage section.

6. The water production apparatus according to claim 5, wherein the tip of the suction pipe is positioned at a predetermined distance from the cooling unit when viewed from above.

7. The storage tank comprises a rectangular parallelepiped main storage section in which the purified water is collected, The water production apparatus according to claim 1, further comprising a cooling unit provided on the bottom surface of the main storage unit for cooling the purified water.

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