Two reverse osmosis water purifiers without wastewater discharge

Abstract

According to the two innovative schemes of the wastewater-discharge-free reverse osmosis water purifier, the first one is that concentrated water and tap water are mixed to serve as domestic water to achieve wastewater-discharge-free, the tap water quality is improved, pure water flushing and unqualified pure water backflow functions thoroughly achieve zero-aging water, control of a magnetic control switch is innovated, and the wastewater-discharge-free zero-aging-water reverse osmosis water purifier has the advantages that the wastewater discharge-free zero-aging-water reverse osmosis water purifier is simple in structure and low in cost. A pressure reducing valve, a high-pressure switch, a low-pressure switch and a one-way valve are abandoned, and the reverse osmosis water purifier has the advantages of high pure water quality, simplicity in control, few accessories, constant pressure intensity, small size, low failure rate, high safety and the like, and is an optimal design scheme for eliminating a traditional reverse osmosis water purifier. A second reverse osmosis water dispenser without wastewater discharge and a booster pump is innovatively designed by using tap water pressure as power to produce pure water and matching a normally-open low-voltage switch with a folding bucket, realizes low pressure, automatic control and full sealing, and has the advantages of no pollution, simple structure, few accessories, low cost, small volume, low failure rate, high safety and the like. The method is an optimal design scheme for eliminating barreled water dispensers.

Description

Technical Field

[0001] This invention belongs to the field of reverse osmosis water purifier technology, and relates to an innovative solution for resolving wastewater discharge and stagnant water problems in reverse osmosis water purifiers, as well as the application of reverse osmosis technology in water dispensers. Background Technology

[0002] As people's living standards continue to improve, more and more people are paying attention to drinking water hygiene, and all kinds of water purifiers have appeared on the market. At present, the production of reverse osmosis water purifiers is developing very rapidly in my country, and its proportion in the entire water purifier market is getting larger and larger.

[0003] Since 2020, the market trend has shifted towards high-flow-rate reverse osmosis membranes without storage tanks. The advantages of using high-flow-rate reverse osmosis membranes are their small size and lack of risk of explosion; however, these advantages come at a higher cost.

[0004] The pure water flow rate of a tankless reverse osmosis water purifier is 0.5L / min-2L / min, which is less than that of a pressure tank water purifier, so it cannot dispense pure water during a power outage.

[0005] Tankless reverse osmosis water purifiers produce pure water while simultaneously discharging pure water. The initial TDS value of the 500cc of pure water produced by the reverse osmosis membrane is very high, which many users are unaware of. They buy a pure water machine but end up drinking concentrated purified water.

[0006] Tankless reverse osmosis water purifiers cannot solve the wastewater discharge problem, and water waste still exists.

[0007] The main disadvantages of bottled water dispensers include the following:

[0008] Hygiene issues: Bottled water is exposed to air after opening, making it prone to bacterial and microbial growth. Although water dispensers are usually equipped with some kind of filtration system, dirt and bacteria can accumulate in the internal pipes and water tank over time. Water dispensers that have not been cleaned for a long time may have bacterial levels far exceeding safety standards, and may even develop algae and unpleasant odors.

[0009] Higher costs: Purchasing bottled water incurs an initial expense, which increases with rising water consumption. Furthermore, transporting and replacing bottled water requires labor costs, especially in remote areas where costs are even higher. Repairing the water dispenser also incurs additional expenses.

[0010] Not environmentally friendly enough: The large number of bottled water containers used are usually made of plastic, and the production and disposal of these plastic containers puts pressure on the environment. If discarded plastic containers are not disposed of properly, they can cause long-term pollution to soil and water sources.

[0011] Water source is difficult to trace: The source of bottled water is difficult to trace. Some bottled water is labeled as natural mineral water, but the actual water source may be a garbage dump; some are labeled as mineral water, but are actually tap water. These situations make it difficult to guarantee water quality.

[0012] Inferior water buckets may contain carcinogens: Bottled water buckets are mostly made of PC material, which can produce chemicals such as bisphenol A (BPA) over time. Some small water plants do not strictly disinfect their buckets, making them a breeding ground for bacteria.

[0013] Ozone residue: Bottled water is usually disinfected with ozone, but ozone residue can produce bromate, a carcinogen, in the water, causing chronic harm to the body.

[0014] In order to ensure food safety, people need a lot of pure water in their daily lives. However, the pure water sources available on the market have many problems as mentioned above. There is an urgent need for a reverse osmosis water dispenser that does not require a booster pump, produces no wastewater, is low-cost, produces high-quality water, has a low failure rate, and is highly safe. Summary of the Invention

[0015] For ease of description, all solenoid valves in this article are normally closed solenoid valves, with the electrical on / off state consistent with the water on / off state. As long as the water on / off state is not changed, the product can be converted to a normally open solenoid valve.

[0016] One of the two types of wastewater-free reverse osmosis water purifiers of this invention is a zero-stale water reverse osmosis water purifier, comprising: a tap water inlet 1, a pre-filter assembly 2, a booster pump 3, a reverse osmosis membrane 4, a wastewater ratio 8, a post-filter 10, a pure water faucet 9, a tap water faucet 11, and a dual water storage tank 12; the dual water storage tank 12 is a single water storage tank that stores both pure water and non-pure water. The dual water storage tank 12 is divided into two parts by a movable separator 13: a pure water area 14 and a non-pure water area 15; a permanent magnet 20 is fixed at the position where the separator 13 moves the most, and the permanent magnet 20 can be made of electroplated waterproof neodymium iron boron; when the pure water area 14 has the most pure water, a magnetic switch 19 is installed on the outer wall of the tank closest to the permanent magnet 20; the tap water inlet 1 is connected to the reverse osmosis membrane 4 via the pre-filter assembly 2, the booster pump 3, and the reverse osmosis membrane 4. The permeate inlet 5 is connected; the tap water inlet 1 is also connected to the non-pure water inlet / outlet 17 of the non-pure water area 15; the pure water inlet / outlet 16 of the pure water area 14 is connected to the pure water faucet 9 through the post-filter 10, and is also connected to the reverse osmosis membrane pure water outlet 6 of the reverse osmosis membrane 4; the concentrate inlet / outlet 18 of the non-pure water area 15 is connected to the tap water faucet 11 and the wastewater ratio 8 outlet, and the reverse osmosis membrane concentrate outlet 7 of the reverse osmosis membrane 4 is connected to the wastewater ratio 8 inlet; when producing pure water, when the pure water area 14 has the most pure water, the non-pure water area 15 of the dual water tank 12 still has a certain amount of non-pure water to prevent the non-pure water TDS from rising too much. The permanent magnet 20 approaches the magnetic control switch 19 to a certain distance to make it conduct, and the control circuit controls the booster pump 3 to cut off the power; when the pure water faucet is opened to release a certain amount of pure water, the permanent magnet 20 moves away from the magnetic control switch 19 to a certain distance to make it disconnect, and the control circuit controls the booster pump 3 to start. This solution uses a normally open magnetic switch to control the start and stop of the booster pump 3. Its key feature is that the booster pump 3 starts when only a small amount of pure water is added to the tank, resulting in fresher pure water from the pure water tap 9 (e.g., ...). Figure 1 ).

[0017] Based on the above scheme, an additional magnetic control switch is added. When the pure water in the pure water area 14 of the dual water tank 12 is at its minimum, a second magnetic control switch 21 is installed on the outer wall of the tank closest to the permanent magnet 20. When the pure water tap is opened to release pure water, and the pure water area 14 has the minimum amount of pure water, the permanent magnet 20 approaches the second magnetic control switch 21 to a certain distance to activate it, and the control circuit controls the booster pump 3 to start, beginning the production of pure water. When producing pure water, and the pure water area 14 has the maximum amount of pure water, the permanent magnet 20 approaches the first magnetic control switch 19 to a certain distance to activate it, and the control circuit controls the booster pump 3 to de-energize, stopping the production of pure water. This scheme uses two normally off magnetic control switches to control the start and stop of the booster pump 3. The permanent magnet 20 approaches the first magnetic control switch 19 to activate it, controlling the booster pump 3 to de-energize it, and the permanent magnet 20 approaches the second magnetic control switch 21 to activate it, controlling the booster pump 3 to start. The advantage is that the booster pump 3 starts when the pure water in the tank is almost empty, reducing the number of times the booster pump 3 starts. (e.g.) Figure 2 )

[0018] Based on the above scheme, an inlet solenoid valve 24, a pure water flushing solenoid valve 25, and a check valve 26 are added to enhance the pure water flushing function. The tap water inlet 1 is connected to the inlet of the booster pump 3 via the pre-filter assembly 2 and the inlet solenoid valve 24. The pure water inlet and outlet 16 of the pure water zone 14 are connected to the inlet of the booster pump 3 via the check valve 26 and the pure water flushing solenoid valve 25. The water purifier only adds three accessories, including a pure water flushing RO membrane function to achieve zero stagnant water. When producing pure water, the booster pump 3 starts, the inlet solenoid valve 24 is energized, and the pure water flushing solenoid valve 25 is de-energized. When producing pure water, the pure water zone 14 produces pure water. At its maximum, the permanent magnet 20 approaches the first magnetic control switch 19 to activate it. The control circuit then de-energizes the booster pump 3, the inlet solenoid valve 24, and the pure water flushing solenoid valve 25. After a certain period of time, or immediately afterward, the booster pump 3 starts to flush the RO membrane with pure water. After flushing the RO membrane for a certain period, the booster pump 3 is de-energized and enters standby mode. The pure water faucet 9 is opened to release pure water. When the pure water level in the pure water zone 14 is at its lowest, the permanent magnet 20 approaches the second magnetic control switch 21 to activate it. The control circuit then energizes the inlet solenoid valve 24, de-energizes the pure water flushing solenoid valve 25, and energizes the booster pump 3 to begin producing pure water. The inlet solenoid valve 24 and the pure water flushing solenoid valve 25 can be replaced by a three-way solenoid valve to simplify the water circuit and control. (e.g.) Figure 3 )

[0019] Based on the above scheme, a pure water probe 27, a pure water reflux solenoid valve 28, and a pure water qualified solenoid valve 29 are added. The pure water outlet 6 of the reverse osmosis membrane is connected to the pure water inlet and outlet 16 of the pure water area 14 through the pure water probe 27 and the pure water qualified solenoid valve 29. The outlet of the pure water probe 27 is connected to the concentrated water inlet and outlet 18 of the non-pure water area 15 through the pure water reflux solenoid valve 28. The water purifier adds a pure water detection function to achieve the ultimate zero stagnant water and adds an alarm function. A pure water TDS qualified value is set, for example, the qualified value is 50ppm. When the pure water probe 27 detects that the pure water TDS is less than or equal to the qualified TDS value, the control circuit controls the pure water qualified solenoid valve 29 to be energized and the pure water reflux solenoid valve 28 to be de-energized. When the pure water probe 27 detects that the pure water TDS is greater than the qualified TDS value, the control circuit controls the pure water qualified solenoid valve 29 to be de-energized and the pure water reflux solenoid valve 28 to be energized, and the unqualified pure water flows back to the non-pure water area 15 of the dual water storage tank 12. When the control circuit continuously receives a non-compliant pure water signal from the pure water probe 27 for a period exceeding a certain value, the control circuit will shut down the machine and issue an alarm signal for replacing the reverse osmosis membrane 4. The pure water reflux solenoid valve 28 and the pure water compliance solenoid valve 29 can be replaced by a single three-way solenoid valve, simplifying the water circuit and control. (e.g.) Figure 4 )

[0020] All four schemes above can be supplemented with a non-pure water probe 22 or a wastewater solenoid valve 23. The non-pure water probe 22 is installed near the concentrate inlet / outlet 18 of the non-pure water area 15, and the wastewater solenoid valve 23 is connected to the wastewater outlet 8. If only the non-pure water probe 22 is added, the TDS of the concentrate in the non-pure water area 15 will increase when producing pure water. When the non-pure water probe 22 detects that the TDS has risen to a certain high value, the control circuit controls the booster pump 3 to de-energize. When the TDS drops to a certain low value, the control circuit controls the booster pump 3 to resume normal operation. If both the non-pure water probe 22 and the wastewater solenoid valve 23 are added, the TDS of the concentrate in the non-pure water area 15 will increase when producing pure water. When the non-pure water probe 22 detects that the TDS has risen to a certain high value, the control circuit controls the wastewater solenoid valve 23 to energize and release the concentrate. When the TDS drops to a certain low value, the control circuit controls the wastewater solenoid valve 23 to de-energize and stop releasing the concentrate.

[0021] Among the four innovative solutions mentioned above, the application of the magnetic control switch is the key innovation. The control circuit controls the operation of the water purifier according to the on / off state of the magnetic control switch. The magnetic control switch controls the start and stop of the booster pump 3 by position control, so that except for the local high pressure when the booster pump 3 starts, the pressure of the water purifier does not fluctuate at other times and remains constant at the tap water pressure. The operation control of the water purifier is independent of the pressure, eliminating the use of pressure reducing valves, high-pressure switches, low-pressure switches and some one-way valves. The application of the magnetic control switch adds many rare advantages to this patent, which is based on zero wastewater and zero stagnant water, such as fewer accessories, simple control, small size, constant pressure, low failure rate and high safety. It has outstanding substantive features and significant progress.

[0022] The second type of reverse osmosis water purifier without wastewater discharge is a reverse osmosis water dispenser without wastewater discharge and booster pump. It includes a tap water inlet 1, an inlet solenoid valve 24, a pre-filter assembly 2, a reverse osmosis membrane 4, a one-way valve 26, a folding water tank 40, a first normally open low-pressure switch 30, a post-filter 10, a pure water faucet 9, and a wastewater ratio 8. The tap water inlet 1 is connected to the reverse osmosis membrane inlet 5 of the reverse osmosis membrane 4 via the inlet solenoid valve 24 and the pre-filter assembly 2. The pure water outlet 6 of the reverse osmosis membrane 4 is connected to the reverse osmosis membrane inlet 5 via the one-way valve 26 and the first normally open low-pressure switch 30. 0. The post-filter 10 is connected to the pure water faucet 9, and the outlet of the one-way valve 26 is connected to the pure water inlet and outlet at the bottom of the folded water tank 40; the reverse osmosis membrane concentrate outlet 7 of the reverse osmosis membrane 4 is connected to the wastewater ratio 8; the first normally open low-pressure switch 30 is the power switch for the inlet solenoid valve 24; when the folded water tank 40 is full of pure water, the first normally open low-pressure switch 30 is turned off, the inlet solenoid valve 24 is de-energized, and the production of pure water stops; when the pure water in the folded water tank 40 decreases to a certain amount, the first normally open low-pressure switch 30 is turned on, the inlet solenoid valve 24 is energized, and the production of pure water begins.

[0023] Based on the aforementioned reverse osmosis water dispenser with no wastewater discharge and no booster pump, the bottom of the folding water tank 40 is equipped with an automatic valve 37 for the pure water inlet and outlet. The automatic valve 37 includes upper and lower valves, and a handle and a second pure water faucet 38 are installed on the top. When the folding water tank 40 is lifted with the handle, the upper and lower valves of the automatic valve 37 automatically disengage, closing the upper and lower water inlets respectively, preventing leakage. When the automatic valve 37 is reconnected, the upper and lower valves automatically open, restoring water flow. This innovative design allows one water purifier to be equipped with multiple folding water tanks 40. When the folding water tank 40 is filled with pure water, it can independently provide pure water to the user without the need for a separate water purifier. (e.g.) Figure 5 )

[0024] Based on the aforementioned wastewater-free, pump-free reverse osmosis water dispenser, it may further include a second normally-operated low-pressure switch 31 and a concentrate tank 34; the first normally-operated low-pressure switch 30 and the second normally-operated low-pressure switch 31 are connected in series as the power switch for the inlet solenoid valve 24; the concentrate tank 34 has a sealing port 32 and a float opening 33 on its top, and a concentrate faucet 39 is installed on its side at a lower position; the reverse osmosis membrane concentrate outlet 7 of the reverse osmosis membrane 4 is connected to the sealing port 32 of the concentrate tank 34 through the wastewater ratio 8 and the second normally-operated low-pressure switch 31; when the concentrate tank 34 is not full, the float in the float opening 33 does not float, and the concentrate tank 34 is connected to the atmosphere, producing pure water. When the concentrate tank 34 is full, the float in the float opening 33 rises, the concentrate tank 34 is sealed, the pressure increases, the second normally open low-pressure switch 31 is disconnected, the inlet solenoid valve 24 is de-energized, and the production of pure water stops. When at least one of the folding water tank 40 and the concentrate tank 34 is full, at least one of the first normally open low-pressure switch 30 and the second normally open low-pressure switch 31 is disconnected, the inlet solenoid valve 24 is de-energized, and the production of pure water stops. When the pure water in the folding water tank 40 decreases to a certain amount, and the concentrate tank 34 is not full, both the first normally open low-pressure switch 30 and the second normally open low-pressure switch 31 are turned on, the inlet solenoid valve 24 is energized, and the production of pure water begins.

[0025] Based on the aforementioned reverse osmosis water dispenser with no wastewater discharge and no booster pump, it also includes an automatic heater 35 and a hot water faucet 36. The automatic heater 35 and the hot water faucet 36 are connected in series, and then connected in parallel with the pure water faucet 9. The automatic heater 35 has an independent switch control and requires enhanced insulation measures to reduce the number of times the water is repeatedly boiled. (e.g.) Figure 6 )

[0026] The key innovation of the above-mentioned reverse osmosis water dispenser with no wastewater discharge and no booster pump is the application of a normally open low-pressure switch in conjunction with a folding water bucket 40. The normally open low-pressure switch replaces the normally closed micro switch of the traditional low-pressure switch with a normally open micro switch. The normally open low-pressure switch disconnects when the pressure is higher than 0.006Mpa (60cm water column pressure) and conducts when the pressure is lower than 0.002Mpa (20cm water column pressure). Assuming the highest point of the folding water tank 40 is 35cm, and the position of the first normally open low-pressure switch 30 is 50cm lower than the highest point of the folding water tank 40, when producing pure water, if the pressure at the first normally open low-pressure switch 30 is higher than 0.006Mpa, the folding water tank 12 is full of pure water, and the inlet solenoid valve 24 is de-energized to stop producing pure water. At this time, the pressure at the highest point of the folding water tank 40 is only 10cm water column pressure, making the folding water tank 40 very safe. When discharging pure water, if the pressure at the first normally open low-pressure switch 30 is lower than 0.2m water column pressure, the inlet solenoid valve 24 is energized to start producing pure water. At this time, the folding water tank 40 is only 5cm high and still contains a small amount of pure water. The design is simple and safe, which is a major advantage. The pressure obtained by the reverse osmosis membrane 4 in producing pure water is the tap water pressure minus the pressure of the folding water tank 40. With a pressure less than 0.006 MPa, which is negligible compared to tap water pressure, the reverse osmosis membrane 4 achieves maximum pressure during pure water production, maximizing both the quality and speed of pure water production. This is a crucial advantage that mechanical control cannot achieve. The folding water tank 40 changes volume with slight pressure variations, controlling the amount of pure water dispensed. It is airtight, completely sealed, hygienic, and pollution-free—a key advantage unmatched by any other water dispenser. The constant-current low-pressure switch, combined with the automatic electrical control of the folding water tank 40, offers numerous rare advantages, including high-quality pure water, complete sealing and pollution-free operation, simple control, low pressure, no noise, water and energy saving, fewer parts, low cost, small size, low failure rate, and high safety. It possesses outstanding substantive features and significant advancements, making it the optimal design solution for replacing traditional bottled water dispensers. Attached Figure Description

[0027] Figure 1 It is a reverse osmosis water purifier that produces no wastewater discharge. Figure 1 ;

[0028] Figure 2 It is a reverse osmosis water purifier that produces no wastewater discharge. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of a reverse osmosis water purifier with no wastewater discharge and pure water rinsing function;

[0030] Figure 4 This is a schematic diagram of a reverse osmosis water purifier with zero wastewater discharge, pure water rinsing, and pure water testing functions.

[0031] Figure 5 This is a schematic diagram of a reverse osmosis water dispenser that discharges wastewater but has no booster pump.

[0032] Figure 6 This is a schematic diagram of a reverse osmosis water dispenser that has no wastewater discharge and no booster pump.

[0033] The components include: 1. Tap water inlet; 2. Pre-filter assembly; 3. Booster pump; 4. Reverse osmosis membrane; 5. Reverse osmosis membrane inlet; 6. Reverse osmosis membrane pure water outlet; 7. Reverse osmosis membrane concentrate outlet; 8. Wastewater ratio; 9. Pure water faucet / first pure water faucet; 10. Post-filter; 11. Tap water faucet; 12. Dual water tanks; 13. Separator membrane; 14. Pure water zone; 15. Non-pure water zone; 16. Pure water inlet / outlet; 17. Non-pure water inlet / outlet; 18. Concentrate inlet / outlet; 19. Magnetic control switch / first magnetic control switch; 20. Permanent magnet. 21 Second magnetic control switch, 22 Non-pure water probe, 23 Wastewater solenoid valve, 24 Inlet solenoid valve, 25 Pure water flushing solenoid valve, 26 Check valve, 27 Pure water probe, 28 Pure water reflux solenoid valve, 29 Pure water qualified solenoid valve, 30 First normally open low-pressure switch, 31 Second normally open low-pressure switch, 32 Sealing port, 33 Float opening, 34 Concentrate tank, 35 Automatic heater, 36 Hot water faucet, 37 Automatic valve, 38 Second pure water faucet, 39 Concentrate faucet, 40 Folding water tank. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figure 4 The working process of a zero-wastewater, zero-stagnant-water reverse osmosis water purifier is as follows:

[0036] Preparation: Connect the zero-wastewater, zero-stagnant-water reverse osmosis water purifier. Do not power on the water purifier. Open the pure water faucet 9 and the tap water faucet 11 to purge the air from the water purifier. Then close the pure water faucet 9 and the tap water faucet 11. Power on the water purifier to start producing pure water.

[0037] Producing pure water: Open the pure water faucet 9 to release pure water. When the pure water in the pure water area 14 is at its minimum, the permanent magnet 20 approaches the second magnetic control switch 21 to turn it on. The control circuit controls the inlet solenoid valve 24 to be energized, the pure water flushing solenoid valve 25 to be de-energized, and the booster pump 3 to start producing pure water. If the pure water faucet 9 is not closed, the pure water will be discharged from the faucet. If the pure water faucet 9 is closed, the pure water will enter the pure water area 14 of the dual water tank 12 until it is full. Then, the permanent magnet 20 approaches the first magnetic control switch 19 to turn it on. The control circuit controls the booster pump 3 to be de-energized, the inlet solenoid valve 24 to be de-energized, and the pure water flushing solenoid valve 25 to be energized, thus stopping the production of pure water.

[0038] Pure water flushing: When pure water is produced and the pure water zone 14 has the most pure water, the permanent magnet 20 approaches the first magnetic control switch 19 to turn it on. The control circuit controls the booster pump 3 to de-energize, the inlet solenoid valve 24 to de-energize, and the pure water flushing solenoid valve 25 to energize. After a certain period of time or immediately, the booster pump 3 starts to flush the RO membrane with pure water. After flushing the RO membrane with pure water for a certain period of time, the booster pump 3 is de-energized. The pure water flushing is completed and the machine enters standby mode.

[0039] Dispensing pure water: Turn on the pure water tap 9 and dispense pure water from the pure water area 14 of the dual water tank 12 under the pressure of tap water. The permanent magnet 20 moves with the isolation membrane 13. When the pure water area 14 has the least amount of pure water, the permanent magnet 20 approaches the second magnetic control switch 21 to make it conduct. The control circuit controls the inlet solenoid valve 24 to be energized, the pure water flushing solenoid valve 25 to be de-energized, and the booster pump 3 to be energized to start producing pure water. At this time, the pure water dispensed is a mixture of freshly produced pure water and pure water from the pure water area 14 of the dual water tank 12. When the pure water area 14 is empty, freshly produced pure water is dispensed.

[0040] Dispensing purified water and tap water: Under any circumstances, open the purified water tap 9 to dispense purified water, and open the tap water tap 11 to allow tap water to enter the non-pure water area 15 to dilute the concentrated water. The tap water tap 11 dispenses mixed water. The two taps dispense water without interfering with each other.

[0041] Reference Figure 6 The working process of a reverse osmosis water dispenser with no wastewater discharge and no booster pump is as follows:

[0042] Preparation: Connect the reverse osmosis water purifier with no wastewater discharge and no booster pump, turn on the power to the water purifier, and turn on the first pure water faucet 9, the second pure water faucet 38 and the hot water faucet 36. When the air in the first pure water faucet 9 and the hot water faucet 36 is exhausted, turn them off and pure water enters the folding water tank 40. When the air in the second pure water faucet 38 is exhausted, turn it off and enter the normal pure water production state.

[0043] To dispense pure water: Open any one of the first pure water tap 9, the second pure water tap 38, or the hot water tap 36 to dispense pure water. The amount of pure water in the folding water tank 40 will decrease. When the pressure in the folding water tank 40 decreases to less than 0.002 MPa, the first normally open low-pressure switch 30 will be turned on, controlling the inlet solenoid valve 24 to be energized, and pure water production will begin.

[0044] Pure water production: After the pure water production starts, if the pure water pressure in the folding water tank 40 is less than 0.006 MPa, the pure water production continues. When the pure water pressure in the folding water tank 40 increases to a level greater than 0.006 MPa, the first normally open low-pressure switch 30 closes, controls the inlet solenoid valve 24 to de-energize, and stops the pure water production.

[0045] Dispensing concentrated water: Concentrated water can be dispensed at any time by opening the concentrated water tap 39. As long as the concentrated water tank 34 is not full, the water dispenser will work normally. When the concentrated water tank 34 is full, the concentrated water needs to be dispensed in time to restore the normal operation of the water dispenser.

[0046] Hot water dispensing: The pure water heating and hot water dispensing functions of this patent are basically the same as those of traditional water dispensers. However, the automatic heater 35 requires enhanced heat preservation measures to reduce repeated boiling of pure water and lower energy consumption.

[0047] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the principles and methods of the present invention should be included within the protection scope of the present invention.

Claims

1. Two kinds of waste water discharge-free reverse osmosis water purifiers, characterized in that, A zero-wastewater reverse osmosis water purifier includes: a tap water inlet (1), a pre-filter assembly (2), a booster pump (3), a reverse osmosis membrane (4), a wastewater ratio (8), a post-filter (10), a pure water faucet (9), a tap water faucet (11), and a dual water tank (12). The dual water tank (12) is divided into two parts by a movable isolation membrane (13), one part being a pure water area (14) and the other part being a non-pure water area (15). A permanent magnet (20) is fixed at the position where the isolation membrane (13) moves the most to produce pure water. When the pure water area (14) has the most pure water, a magnetic switch (19) is installed on the outer wall of the tank closest to the permanent magnet (20). The tap water inlet (1) is connected to the reverse osmosis membrane inlet (5) of the reverse osmosis membrane (4) through the pre-filter assembly (2) and the booster pump (3). The tap water inlet (1) is also connected to the non-pure water inlet and outlet (17) of the non-pure water area (15); the pure water inlet and outlet (16) of the pure water area (14) is connected to the pure water faucet (9) through the post-filter (10) and to the pure water outlet (6) of the reverse osmosis membrane (4); the concentrated water inlet and outlet (18) of the non-pure water area (15) is connected to the tap water faucet (11) and the wastewater ratio (8) outlet, and the concentrated water outlet (7) of the reverse osmosis membrane (4) is connected to the wastewater ratio (8) inlet; when pure water is produced, when the pure water area (14) has the most pure water, the permanent magnet (20) approaches the magnetic control switch (19) to a certain distance to make it conduct, and the control circuit controls the booster pump (3) to de-energize; when a certain amount of pure water is released, the permanent magnet (20) moves away from the magnetic control switch (19) to a certain distance to make it disconnect, and the control circuit controls the booster pump (3) to start.

2. The two waste water discharge-free reverse osmosis water purifiers according to claim 1, characterized in that, It also includes a second magnetic control switch (21). When the pure water in the pure water area (14) of the dual water tank (12) is at its minimum, the second magnetic control switch (21) is installed at the position closest to the permanent magnet (20) on the outer wall of the tank. When pure water is released and the pure water in the pure water area (14) is at its minimum, the permanent magnet (20) approaches the second magnetic control switch (21) to a certain distance to make it conduct, thereby controlling the booster pump (3) to start. When pure water is produced and the pure water in the pure water area (14) is at its maximum, the permanent magnet (20) approaches the first magnetic control switch (19) to a certain distance to make it conduct, thereby controlling the booster pump (3) to be de-energized.

3. The two waste water discharge-free reverse osmosis water purifiers according to claim 2, characterized in that, It also includes an inlet solenoid valve (24), a pure water flushing solenoid valve (25) and a check valve (26) to add a pure water flushing function; the tap water inlet (1) is connected to the inlet of the booster pump (3) through the pre-filter assembly (2) and the inlet solenoid valve (24), and the pure water inlet and outlet (16) of the pure water area (14) are connected to the inlet of the booster pump (3) through the check valve (26) and the pure water flushing solenoid valve (25).

4. The waste water free reverse osmosis water purifier as claimed in claim 3 wherein, It also includes pure water probe (27), pure water backflow solenoid valve (28), pure water qualified solenoid valve (29), increase pure water detection function; The reverse osmosis membrane pure water outlet (6) is communicated with the pure water inlet and outlet (16) of the pure water area (14) through the pure water probe (27), the pure water qualified solenoid valve (29), and the pure water backflow solenoid valve (28) is communicated with the concentrated water inlet and outlet (18) of the non-pure water area (15) through the pure water probe (27) outlet.

5. The waste water free reverse osmosis water purifier as claimed in claim 4 wherein, The pure water detection also has an alarm function, when the computer control circuit continuously obtains the pure water unqualified signal from the pure water probe (27) for more than a certain value, the control circuit controls the stop and sends the alarm signal of the reverse osmosis membrane (4).

6. The two waste water discharge free reverse osmosis water purifier according to claim 1 or 2 or 3 or 4 or 5, characterized in that, It also includes non-pure water probe (22) or also includes non-pure water probe (22) and waste water solenoid valve (23); The non-pure water probe (22) is installed near the concentrated water inlet and outlet (18) of the non-pure water area (15), and the waste water solenoid valve (23) is communicated with the waste water ratio (8) outlet; When producing pure water, the concentrated water TDS of the non-pure water area (15) will rise, when the non-pure water probe (22) detects that the concentrated water TDS rises to a certain high value, the control circuit controls the booster pump (3) to be powered off or controls the waste water solenoid valve (23) to be powered on to discharge the concentrated water, when the concentrated water TDS reduces to a certain low value, the control circuit controls the booster pump (3) to restore normal work or controls the waste water solenoid valve (23) to be powered off to stop discharging the concentrated water.

7. Two kinds of waste water discharge-free reverse osmosis water purifiers, characterized in that, The waste water discharge-free booster pump-free reverse osmosis drinking water machine comprises a tap water inlet (1), a water inlet solenoid valve (24), a pre-filter core group (2), a reverse osmosis membrane (4), a one-way valve (26), a folding water bucket (40), a first always-on low-voltage switch (30), a post-filter core (10), a pure water faucet (9) and a waste water ratio (8). The tap water inlet (1) is communicated with the reverse osmosis membrane inlet (5) of the reverse osmosis membrane (4) through the water inlet solenoid valve (24) and the pre-filter core group (2), the reverse osmosis membrane pure water outlet (6) of the reverse osmosis membrane (4) is communicated with the pure water faucet (9) through the one-way valve (26), the first always-on low-voltage switch (30) and the post-filter core (10), and the outlet of the one-way valve (26) is communicated with the bottom pure water inlet and outlet of the folding water bucket (40). The reverse osmosis membrane concentrated water outlet (7) of the reverse osmosis membrane (4) is communicated with the waste water ratio (8). The first always-on low-voltage switch (30) is a power switch of the water inlet solenoid valve (24). When the folding water bucket (40) is full of pure water, the first always-on low-voltage switch (30) is disconnected, the water inlet solenoid valve (24) is powered off, and the pure water production is stopped. When the amount of pure water in the folding water bucket (40) is reduced to a certain amount, the first always-on low-voltage switch (30) is turned on, the water inlet solenoid valve (24) is powered on, and the pure water production is started.

8. The waste water free reverse osmosis water purifier as claimed in claim 7 wherein, It also includes an automatic valve (37) and a second pure water faucet (38), the bottom end of the folding water bucket (40) is equipped with an automatic valve (37), the top of the folding water bucket (40) is equipped with a handle and a second pure water faucet (38), the automatic valve (37) includes two upper and lower valves, when the folding water bucket (40) is lifted with the handle, the upper and lower valves of the automatic valve (37) are automatically disconnected, and the two valves close the upper and lower water outlets respectively, without water leakage; when the automatic valve (37) of the folding water bucket (40) is restored to connection, the upper and lower valves of the automatic valve (37) are automatically opened, and the water supply is restored.

9. The waste water free reverse osmosis water purifier as claimed in claim 8 wherein, It also includes a second always-on low-voltage switch (31) and a concentrated water bucket (34); the first always-on low-voltage switch (30) and the second always-on low-voltage switch (31) are connected in series to be the power switch of the water inlet electromagnetic valve (24), the concentrated water bucket (34) has a sealing port (32) and a floating ball opening (33) on the top, and a concentrated water faucet (39) is arranged on the side at a low position; the reverse osmosis membrane (4) is connected in communication with the sealing port (32) of the concentrated water bucket (34) through the waste water ratio (8) and the second always-on low-voltage switch (31); when the concentrated water in the concentrated water bucket (34) is not full, the floating ball in the floating ball opening (33) does not float up, the concentrated water bucket (34) is in communication with the atmosphere, and when the pure water is made, if the concentrated water in the concentrated water bucket (34) is full, the floating ball in the floating ball opening (33) floats up, the concentrated water bucket (34) is sealed, the pressure is increased, the second always-on low-voltage switch (31) is disconnected, the water inlet electromagnetic valve (24) is powered off, and the pure water making is stopped; when at least one of the folding water bucket (40) and the concentrated water bucket (34) is full, at least one of the first always-on low-voltage switch (30) and the second always-on low-voltage switch (31) is disconnected, the water inlet electromagnetic valve (24) is powered off, and the pure water making is stopped; when the pure water in the folding water bucket (40) is reduced to a certain amount and the concentrated water bucket (34) is not full, the first always-on low-voltage switch (30) and the second always-on low-voltage switch (31) are both turned on, the water inlet electromagnetic valve (24) is powered on, and the pure water making is started.

10. The waste water free reverse osmosis water purifier as claimed in claim 9 wherein, It also includes an automatic heater (35) and a hot water faucet (36), the automatic heater (35) and the hot water faucet (36) are connected in series, and then connected in parallel with the pure water faucet (9), the automatic heater (35) has an independent switch control.

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