Pure water humidifier

Abstract

The utility model relates to a pure water humidifier, which belongs to the technical field of humidifiers, and comprises a casing, a pre-filtering assembly is arranged in the casing, the pre-filtering assembly is connected with an RO (reverse osmosis) membrane filter, a pure water outlet end of the RO membrane filter is connected with a TDS (total dissolved solids) sensor, a wastewater discharge end of the RO membrane filter is connected with a proportioning valve, a water tank is arranged in the casing, and the water tank is provided with a water vapor discharge pipe. Water vapor is discharged through the water vapor discharging pipe and the machine shell in sequence, a humidifying assembly is arranged in the water tank, and a water supply pump body is arranged in the machine shell. The water purifier has the effects of efficiently saving water and prolonging the service life of the RO membrane component.

Description

Technical Field

[0001] This application relates to the field of humidifier technology, and in particular to a pure water humidifier. Background Technology

[0002] Most existing humidifiers use tap water and lack deep water treatment, which can lead to problems such as scaling inside the humidifier tank and nozzle clogging. This results in frequent descaling of the water tank, and nozzle clogging can also cause the humidity accuracy in the laboratory to fail to meet the standards, affecting experimental results.

[0003] Publication No. CN103245026A discloses an ultrasonic pure water humidifier that filters the water source through a primary filter and a reverse osmosis (RO) membrane module. Tap water is filtered to become pure water before humidification. This reduces the "white powder" phenomenon during humidification. However, this solution still has the following drawbacks:

[0004] In reverse osmosis (RO) membrane modules, tap water is separated into pure water and wastewater. In this system, wastewater is discharged directly, meaning the discharge volume is fixed and cannot be adjusted according to actual needs. Therefore, even when water quality is good or a large amount of wastewater is not required, a fixed discharge volume will still occur, resulting in low pure water production and water waste. Conversely, if the water quality is poor, impurities will easily accumulate on the RO membrane surface, accelerating fouling and clogging, and affecting its filtration performance. Utility Model Content

[0005] In order to achieve efficient water conservation and extend the service life of reverse osmosis (RO) membrane modules, this application provides a pure water humidifier.

[0006] The pure water humidifier provided in this application adopts the following technical solution:

[0007] A pure water humidifier includes a casing, a pre-filtration component inside the casing, an RO membrane filter connected to the pre-filtration component, a TDS sensor connected to the pure water outlet of the RO membrane filter, a proportional regulating valve connected to the wastewater discharge end of the RO membrane filter, a water tank inside the casing, a water vapor discharge pipe inside the water tank, water vapor being discharged sequentially through the water vapor discharge pipe and the casing, a humidification component inside the water tank, and a water supply pump inside the casing.

[0008] By adopting the above technical solutions, the pre-filtration component can perform preliminary filtration of tap water, remove large particulate impurities and suspended solids, reduce direct pollution to the RO membrane, and extend the service life of the RO membrane.

[0009] The water then passes through an RO membrane filter into a water tank. The humidification unit acts on the pure water in the tank to achieve pure water humidification, effectively avoiding the "white powder" phenomenon (i.e., unfiltered dissolved solids enter the air with the water vapor and form white deposits), improving the cleanliness of the humidified air, and thus improving the humidity control quality of the experimental or working environment.

[0010] The TDS sensor dynamically provides feedback on water quality, allowing for adjustments to the wastewater discharge ratio based on this information. If the water quality is good, wastewater discharge is reduced, conserving water resources and increasing pure water production. Conversely, if the water quality is poor, wastewater discharge is increased to keep the RO membrane surface clean, preventing contamination and clogging, and extending its lifespan. This proportional control valve balances the wastewater to pure water ratio, achieving efficient water conservation and long-term protection for the RO membrane.

[0011] Optionally, the concentrate discharge end of the RO membrane filter is connected to a drain solenoid valve.

[0012] By adopting the above technical solution, the drain solenoid valve can open at appropriate time intervals to discharge wastewater, maintaining the filtration capacity of the RO membrane. This process effectively reduces the accumulation of pollutants on the membrane surface, improves the water purification efficiency of the RO membrane, and maintains the stable operation of the system. Furthermore, when manual removal of the RO membrane for replacement / cleaning is required, the drain solenoid valve also discharges all concentrated wastewater.

[0013] Optionally, the pre-filtration assembly includes a PP filter and a GAC ​​filter, wherein the PP filter is connected to the GAC filter and the GAC filter is connected to the RO membrane filter.

[0014] By adopting the above technical solutions, the PP filter removes large particulate impurities, and the GAC filter removes chemical contaminants, which can prevent the RO membrane from being blocked by particulate matter or corroded by chemical substances, extend the service life of the RO membrane, and reduce the cleaning frequency and replacement cost of the RO membrane.

[0015] Optionally, a low-pressure switch is provided between the PP filter and the GAC filter, the GAC filter is connected to the water supply pump body, an inlet solenoid valve is provided between the GAC filter and the water supply pump body, the water supply pump body is connected to the RO membrane filter, and a high-pressure switch is provided between the water supply pump body and the RO membrane filter.

[0016] By adopting the above technical solution, a low-pressure switch is installed between the PP filter and the GAC filter to detect the inlet water pressure. If the inlet water pressure is too low, for example due to blockage in the water supply pipeline or PP filter, the low-pressure switch will sense the pressure drop. When the inlet water pressure falls below the set safety threshold, the low-pressure switch will promptly cut off the power to the water pump to prevent the pump from running dry and to protect it from burning out.

[0017] The high-pressure switch is installed between the water supply pump and the RO membrane filter, primarily to detect the outlet water pressure. When a blockage occurs in a pipe or filter (such as the RO membrane) at the outlet, continued operation of the pump will cause the outlet water pressure to rise sharply. When the outlet water pressure exceeds the set safety threshold, the high-pressure switch will promptly cut off the power to the pump, preventing it from continuing to apply pressure and avoiding damage to the pipes or RO membrane filter due to excessive pressure, or causing system malfunction.

[0018] Therefore, the combined use of low-pressure and high-pressure switches provides a dual protection mechanism for the water pump and the entire humidifier system, preventing the water pump from running dry when there is no water or insufficient water intake, and preventing equipment failure caused by excessive pressure at the outlet.

[0019] Optionally, an overflow pipe is connected to the top of the water tank, and the overflow pipe extends out of the housing.

[0020] By adopting the above technical solution, the overflow pipe provides the water tank with an automatic overflow protection function, which guides excess water to a safe area for discharge, thus avoiding equipment damage caused by excessive water level.

[0021] Optionally, a drain pipe is provided at the bottom of the water tank, the drain pipe is connected to a regulating pipe, the regulating pipe is connected to the overflow pipe, and a drain valve is provided between the regulating pipe and the overflow pipe.

[0022] By adopting the above technical solution, the drain pipe is located at the bottom of the water tank and is used to drain the water in the water tank when needed, such as when cleaning the water tank regularly or maintaining the humidifier. When the drain valve is opened, the water in the water tank can pass through the drain pipe, regulating pipe and overflow pipe in sequence to empty the water tank.

[0023] If the overflow pipe and the drain pipe are directly connected as a single unit, slight errors between them during actual installation may lead to problems such as poor connection, inadequate sealing, or even pipe deformation, resulting in poor drainage or leakage. Therefore, the function of the regulating pipe is to compensate for any deviations that may occur between the overflow pipe and the drain pipe during actual installation, and to help them connect more flexibly under different installation conditions.

[0024] Optionally, the water tank is equipped with a liquid level observation tube, and the casing is equipped with a liquid level observation window.

[0025] By adopting the above technical solution, the liquid level observation tube is connected to the inside of the water tank, allowing for real-time monitoring of water level changes. The liquid level observation window on the casing further enhances convenience, enabling users to directly view the water level without opening the device or disassembling the casing, facilitating timely water replenishment.

[0026] Optionally, the humidification component includes several electric heating elements, which are controlled by a proportional humidity controller built into the housing.

[0027] By adopting the above technical solution, the electric heating element adjusts its heating power through a proportional humidity controller, thereby precisely controlling the amount of steam generated. The proportional humidity controller adjusts the heating power of the electric heating element based on real-time humidity changes, preventing overheating or overcooling during the heating process. This achieves more stable and precise humidity control, reduces humidity fluctuations, and improves the overall performance of the humidifier. Especially in environments requiring precise humidity control (such as laboratory or industrial applications), this design ensures that the humidity remains within the ideal range.

[0028] Furthermore, thanks to the proportional humidity controller, the heating power of the electric heating element is not always fully on or off, but rather dynamically adjusted according to the current humidity requirements. For example, when the ambient humidity approaches the set value, the heating power gradually decreases, thereby avoiding unnecessary energy consumption.

[0029] Optionally, the housing is provided with a display screen, which is used to display the humidification amount, real-time humidification amount, water temperature, the operating status of the humidification component, TDS value and equipment operating status. The housing is also provided with alarm switch contacts, humidity high limit switch contacts, fan interlock switch control contacts and RS485 interface.

[0030] By adopting the above technical solutions, the real-time display function helps users monitor the humidifier's operating status at any time, facilitating equipment monitoring and adjustments to ensure the humidifier operates in optimal condition. Simultaneously, users can understand water quality conditions based on the TDS value, proactively preventing water quality issues from affecting the equipment.

[0031] When the equipment malfunctions, the alarm switch contacts can be connected to an external alarm device to trigger an alarm and remind the user to take timely measures.

[0032] The sensor connected to the humidity high limit switch contacts is used to detect whether the ambient humidity exceeds the set maximum limit. Once the humidity exceeds the predetermined range, the contact will trigger the device to stop humidifying or issue an alarm to ensure that the ambient humidity is not too high.

[0033] The fan interlock switch contacts connect to the external fan. When the humidifier starts working, the fan automatically starts synchronously to ensure that the humidified air is evenly distributed. When the humidifier stops running, the fan will also automatically turn off to avoid over-ventilation. When the ambient humidity is too high, the fan interlock switch can increase the fan speed, thereby increasing airflow and accelerating the removal of moisture to reduce the ambient humidity.

[0034] The RS485 interface enables digital control of the cluster, reducing the control risks associated with using analog signals.

[0035] Optionally, the housing is provided with a partition and an independent electrical chamber. The partition separates the housing into a filtration chamber and a humidification chamber. The exhaust port on the housing is connected to the humidification chamber. The humidification chamber is located between the filtration chamber and the independent electrical chamber. The water tank and humidification assembly are located in the humidification chamber. The pre-filtration assembly, the RO membrane filter, and the water supply pump are all located in the filtration chamber. A cooling fan is also provided in the filtration chamber to dissipate heat from the water supply pump.

[0036] By adopting the above technical solution, the partition divides the inside of the equipment into a filtration chamber, a humidification chamber, and an independent electrical chamber. This design can effectively isolate different functional modules, avoid the influence of water vapor, humidity, or heat on electrical components, and improve equipment safety.

[0037] Cooling fans can effectively reduce the temperature of the water pump body, preventing performance degradation or failure due to overheating, and improving the reliability and continuous working capacity of the equipment.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] 1. The pre-filtration component can perform preliminary filtration of tap water, removing large particulate impurities and suspended solids, reducing direct contamination of the RO membrane, and extending the service life of the RO membrane;

[0040] 2. Water enters the water tank through the RO membrane filter. The humidification component acts on the pure water in the tank to achieve pure water humidification, effectively avoiding the "white powder" phenomenon (i.e., unfiltered dissolved solids enter the air with water vapor and form white deposits), improving the cleanliness of the humidified air, thereby improving the humidity control quality of the experimental or working environment.

[0041] 3. The TDS sensor can dynamically provide feedback on water quality. Based on the water quality information from the TDS sensor, the wastewater discharge ratio can be adjusted. If the water quality is good, wastewater discharge is reduced, saving water resources and increasing pure water production; if the water quality is poor, wastewater discharge is increased to keep the RO membrane surface clean, prevent RO membrane contamination and clogging, and extend its service life. In this way, the ratio of wastewater to pure water is balanced through a proportional control valve, achieving efficient water saving and long-term protection of the RO membrane.

[0042] 4. The combined use of low-pressure and high-pressure switches provides a dual protection mechanism for the water pump and the entire humidifier system. It can prevent the water pump from running dry when there is no water or insufficient water inlet, and it can also prevent equipment failure caused by excessive pressure at the outlet.

[0043] 5. The electric heating element's heating power is adjusted by a proportional humidity controller, thereby precisely controlling the amount of steam generated. The proportional humidity controller adjusts the heating power of the electric heating element based on real-time humidity changes, preventing overheating or undercooling during the heating process. This achieves more stable and precise humidity control, reducing humidity fluctuations, especially in environments requiring precise humidity control (such as laboratory or industrial applications), ensuring that the humidity remains within the ideal range.

[0044] 6. The partition divides the interior of the equipment into a filtration chamber, a humidification chamber, and an independent electrical chamber. This design effectively isolates different functional modules, preventing moisture, humidity, or heat from affecting electrical components and improving equipment safety. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0046] Figure 2 This is a schematic diagram illustrating the structure of the proportional control valve and the water tank in the embodiments of this application.

[0047] Figure 3 This is a schematic diagram illustrating the structure of the display screen in an embodiment of this application.

[0048] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Electrical independent chamber; 12. Partition; 13. Filter chamber; 14. Humidification chamber; 16. Liquid level observation window; 2. Pre-filtration assembly; 21. PP filter; 22. GAC filter; 23. Low-pressure switch; 24. Water supply pump body; 25. Inlet solenoid valve; 3. RO membrane filter; 31. High-pressure switch; 32. Proportional regulating valve; 33. Drain solenoid valve; 34. TDS sensor; 4. Cooling fan; 5. Water tank; 51. Water vapor discharge pipe; 52. Drain pipe; 53. Regulating pipe; 54. Drain valve; 55. Liquid level observation pipe; 56. Overflow pipe; 6. Humidification assembly; 61. Electric heating element; 71. Display screen; 72. Alarm switch contact; 73. Humidity high limit switch contact; 74. Fan interlock switch control contact; 75. RS485 interface Detailed Implementation

[0049] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0050] This application discloses a pure water humidifier.

[0051] like Figure 1 The pure water humidifier includes a casing 1, with an independent electrical chamber 11 inside the casing 1. The independent electrical chamber 11 is located on one side inside the casing 1. A partition 12 is also welded inside the casing 1, which separates a filter chamber 13 and a humidification chamber 14 inside the casing 1. The filter chamber 13 is located on the other side inside the casing 1, and the humidification chamber 14 is located between the filter chamber 13 and the independent electrical chamber 11. The exhaust port at the top of the casing 1 is connected to the humidification chamber 14.

[0052] like Figure 1 and Figure 2The filter chamber 13 is equipped with a pre-filtration component 2 and an RO membrane filter 3. In this embodiment, the pre-filtration component 2 includes a PP filter 21 and a GAC ​​filter 22. In other embodiments, the pre-filtration component 2 may only include one of the PP filter 21 and the GAC filter 22, or other water purification filters. The inlet end of the PP filter 21 is connected to an external water source pipeline, and the outlet end of the PP filter 21 is connected to the inlet end of the GAC filter 22. A low-pressure switch 23 is installed in the pipeline between the PP filter 21 and the GAC filter. A water supply pump body 24 is connected to the outlet end of the GAC filter 22. An inlet solenoid valve 25 is installed in the pipeline between the GAC filter 22 and the water supply pump body 24. The outlet end of the water supply pump body 24 is connected to the inlet end of the RO membrane filter 3. A high-pressure switch 31 is installed in the pipeline between the pump body and the RO membrane filter 3. The concentrated water discharge end of the RO membrane filter 3 is connected to a proportional regulating valve 32 and a drain solenoid valve 33, and a TDS sensor 34 is installed on the pure water outlet pipe of the RO membrane filter 3. A cooling fan 4 is also installed inside the filter chamber 13.

[0053] like Figure 1 and Figure 3 A water tank 5, made of stainless steel, is installed inside the humidification chamber 14. The water tank 5 is connected to the pure water outlet of the RO membrane filter 3. A water vapor discharge pipe 51 and an overflow pipe 56 are installed on the top of the water tank 5. The overflow pipe 56 extends vertically downwards into the casing 1 and connects to the drain outlet 15. A drain pipe 52 is installed at the bottom of the water tank 5, and a regulating pipe 53 is connected to it. The regulating pipe 53 is connected to the bottom of the overflow pipe 56, and a drain valve 54 is installed at the connection between the overflow pipe 56 and the regulating pipe 53. The regulating pipe 53 is threaded to both the overflow pipe 56 and the drain pipe 52. A liquid level observation pipe 55 is installed on the side of the water tank 5 facing the electrical independent chamber 11, and a liquid level observation window 16 is provided on the casing 1. Water vapor can be discharged sequentially through water vapor discharge pipe 51 and the exhaust port at the top of housing 1. Alternatively, a nozzle (not shown in the figure) can be installed on water vapor discharge pipe 51, and water vapor can be discharged from the exhaust port at the top of housing 1 after passing through the nozzle.

[0054] like Figure 1 The water tank 5 contains a humidification component 6. In this embodiment, the humidification component 6 includes several electric heating tubes 61, which are controlled by a proportional humidity controller built into the housing 1. The proportional humidity controller (not shown in the figure) is located in the independent electrical chamber 11 and can be directly connected to a humidity transmitter. Furthermore, it can also include a group control logic module, allowing the heating tubes to operate in groups, thus improving control accuracy and reliability. In other embodiments, the humidification component 6 can also be an ultrasonic atomizing transducer.

[0055] The housing 1 is also equipped with a display screen 71, which is a large LCD dot matrix display screen. The display screen 71 is connected to the components in the independent electrical chamber 11. The display screen 71 is used to display the humidification amount, real-time humidification amount, water temperature, operating status of electric heating element 61 (currently operating at what percentage of power), TDS value, and equipment operating status (running or stopped). The housing 1 is also equipped with an alarm switch contact 72, a high humidity limit switch contact 73, a fan interlock switch control contact 74, and an RS485 interface 75. The alarm switch contact 72, the high humidity limit switch contact 73, the fan interlock switch control contact 74, and the RS485 interface 75 are connected to the components in the independent electrical chamber 11.

[0056] The implementation principle of this application embodiment is as follows: tap water is filtered into pure water through PP filter 21, GAC filter 22 and RO membrane filter 3 in sequence. Then the pure water is stored in water tank 5. Electric heating tube 61 heats the water in stainless steel water tank 5 to boiling, generating pure and sterile steam to humidify the air, effectively avoiding the "white powder" phenomenon (that is, unfiltered dissolved solids enter the air with water vapor and form white deposits), improving the cleanliness of the humidified air, thereby improving the humidity control quality of the experimental or working environment.

[0057] During use, the TDS sensor 34 can dynamically provide feedback on water quality. The TDS value can be viewed on the display screen 71. The TDS value should be kept below 10 PPM. If the TDS value exceeds 10 PPM, an alarm will be triggered and the machine will be shut down.

[0058] Based on the water quality information fed back by the TDS sensor 34, the wastewater discharge ratio can be manually adjusted. If the water quality is good, wastewater discharge is reduced, saving water resources and increasing pure water production; if the water quality is poor, wastewater discharge is increased to keep the RO membrane surface clean, prevent RO membrane contamination and clogging, and extend its service life. In this way, the ratio of wastewater to pure water is balanced through the proportional control valve, achieving efficient water saving and long-term protection of the RO membrane.

[0059] The electric heating element 61 adjusts its heating power via a proportional humidity controller, thereby precisely controlling the amount of steam generated. The proportional humidity controller adjusts the heating power of the electric heating element 61 based on real-time humidity changes, preventing overheating or overcooling during the heating process. This achieves more stable and precise humidity control, and features heat preservation and preheating functions to reduce humidity fluctuations. Especially in environments requiring precise humidity control (such as laboratory or industrial applications), it ensures that the humidity remains within the ideal range.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pure water humidifier, characterized in that: The device includes a housing (1), a pre-filtration assembly (2) is provided inside the housing (1), an RO membrane filter (3) is connected to the pre-filtration assembly (2), a TDS sensor (34) is connected to the pure water outlet of the RO membrane filter (3), a proportional regulating valve (32) is connected to the wastewater discharge end of the RO membrane filter (3), a water tank (5) is provided inside the housing (1), a water vapor discharge pipe (51) is provided in the water tank (5), water vapor is discharged through the water vapor discharge pipe (51) and the housing (1) in sequence, a humidification assembly (6) is built into the water tank (5), and a water supply pump body (24) is built into the housing (1).

2. The pure water humidifier according to claim 1, characterized in that: The concentrated water discharge end of the RO membrane filter (3) is connected to a drain solenoid valve (33).

3. The pure water humidifier according to claim 1, characterized in that: The pre-filtration component (2) includes a PP filter (21) and a GAC ​​filter (22), wherein the PP filter (21) is connected to the GAC filter (22) and the GAC filter (22) is connected to the RO membrane filter (3).

4. The pure water humidifier according to claim 3, characterized in that: A low-pressure switch (23) is provided between the PP filter (21) and the GAC filter (22). The GAC filter (22) is connected to the water supply pump body (24). An inlet solenoid valve (25) is provided between the GAC filter (22) and the water supply pump body (24). The water supply pump body (24) is connected to the RO membrane filter (3). A high-pressure switch (31) is provided between the water supply pump body (24) and the RO membrane filter (3).

5. The pure water humidifier according to claim 1, characterized in that: The top of the water tank (5) is connected to an overflow pipe (56), which extends out of the housing (1).

6. The pure water humidifier according to claim 5, characterized in that: The bottom of the water tank (5) is provided with a drain pipe (52), the drain pipe (52) is connected to a regulating pipe (53), the regulating pipe (53) is connected to the overflow pipe (56), and a drain valve (54) is provided between the regulating pipe (53) and the overflow pipe (56).

7. The pure water humidifier according to claim 1, characterized in that: The water tank (5) is equipped with a liquid level observation tube (55), and the casing (1) is equipped with a liquid level observation window (16).

8. The pure water humidifier according to claim 1, characterized in that: The humidification component (6) includes several electric heating tubes (61), which are controlled by a proportional humidity controller built into the housing (1).

9. The pure water humidifier according to claim 1, characterized in that: The housing (1) is provided with a display screen (71), which is used to display the humidification amount, real-time humidification amount, water temperature, the operating status of the humidification component (6), TDS value and equipment operating status. The housing (1) is also provided with an alarm switch contact (72), a humidity high limit switch contact (73), a fan interlock switch control contact (74) and an RS485 interface (75).

10. The pure water humidifier according to claim 1, characterized in that: The housing (1) is provided with a partition (12) and an independent electrical chamber (11). The partition (12) separates the housing (1) into a filter chamber (13) and a humidification chamber (14). The exhaust port on the housing (1) is connected to the humidification chamber (14). The humidification chamber (14) is located between the filter chamber (13) and the independent electrical chamber (11). The water tank (5) and the humidification component (6) are located in the humidification chamber (14). The pre-filtration component (2), the RO membrane filter (3), and the water supply pump body (24) are all located in the filter chamber (13). The filter chamber (13) is also provided with a cooling fan (4) for cooling the water supply pump body (24).

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