Evaporative humidifier

Abstract

The utility model relates to an evaporative humidifier, which belongs to the technical field of humidifiers and comprises an outer casing, a first water tank, a wet curtain, a fan, a third water tank and a water replenishing component, the first water tank, the wet curtain, the fan, the third water tank and the water replenishing component are arranged in the outer casing, an air inlet and an air outlet are arranged on the outer casing, and an air passage is arranged between the air inlet and the air outlet. Water stored in the first water tank is conveyed to the third water tank through the water supplementing assembly. A heater is arranged at the bottom of the third water tank, water stored in the third water tank is heated by the heater to become boiled water, a sewer pipe is arranged at the bottom of the third water tank, an electromagnetic valve is arranged on the sewer pipe, after the water stored in the third water tank is boiled, the electromagnetic valve is opened, and the boiled water flows to the wet curtain through the sewer pipe to wet the wet curtain; the wet steam in the wet curtain also enters the air passing channel along with the air flow and is discharged out of the outer shell from the air outlet, so that the temperature of the wet steam is reduced, a user is not prone to being scalded, and the safety of the humidifier product is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of humidifiers, and particularly relates to an evaporative humidifier. Background Art

[0002] Existing warm mist humidifiers mainly use a heating element to heat water and discharge the water vapor generated by the hot water directly out of the shell to achieve a humidification effect. The water vapor discharged by this humidifier product is high in temperature and can easily burn the user. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an evaporative humidifier, which cools the boiling water produced by the heater through a wet curtain, and produces low-temperature moist water vapor which is discharged from the air outlet along with the wind flow, effectively solving the problem of easy scalding caused by water vapor.

[0004] The utility model is implemented as follows: an evaporative humidifier is provided, comprising an outer shell and a first water tank, a wet curtain and a fan arranged in the outer shell, an air inlet and an air outlet respectively arranged on the outer shell, an air passage duct is arranged between the air inlet and the air outlet, the fan and the wet curtain are respectively arranged in the air passage duct, a third water tank is arranged above the wet curtain, the water stored in the first water tank is transported to the third water tank through a water replenishing component; a heater is arranged at the bottom of the third water tank, the heater heats the water stored in the third water tank to make it boiled water, a downpipe is arranged at the bottom of the third water tank, the downpipe is located above the wet curtain, an electromagnetic valve is arranged on the downpipe, and a thermostat is arranged on the third water tank. After the water stored in the third water tank is boiled, the thermostat controls the heater to stop heating and simultaneously controls the electromagnetic valve to open, the boiled water in the third water tank flows through the downpipe to the wet curtain below to wet the wet curtain, and the moist water vapor in the wet curtain enters the air passage duct with the wind flow and is discharged from the outer shell through the air outlet.

[0005] Furthermore, a second water tank and a second water supply pipe are provided in the outer shell. The second water tank is located between the wet curtain and the first water tank. The lower part of the wet curtain is located in the second water tank. The second water tank collects excess hot water after wetting the wet curtain. A second water pump, a low water level sensor and a high water level sensor are respectively provided in the second water tank. One end of the second water supply pipe is connected to the second water pump, and the other end thereof is connected to the third water tank. The second water pump returns water to the third water tank through the second water supply pipe; when the low water level sensor is triggered, the second water pump is controlled to start and return water to the third water tank through the second water supply pipe; when the high water level sensor is triggered, the first water pump is controlled to stop running, stop supplying water to the third water tank, and at the same time control the heater to stop heating.

[0006] Furthermore, a normally open solenoid valve and a return pipe are provided on the second water tank. The normally open solenoid valve is provided on the return pipe, and the outlet of the return pipe is connected to the first water tank. After the normally open solenoid valve is powered off, the return pipe is connected, and the hot water in the second water tank flows back to the first water tank through the return pipe.

[0007] Furthermore, a central shell is arranged in the outer shell, and an upper water tank body, a middle shell and a lower water tank body are respectively arranged on the central shell, the upper water tank body and the lower water tank body are respectively positioned on the outer shell, the upper water tank body and the middle shell are connected by a plurality of spokes, the gap between adjacent spokes is part of the air duct, a sealing ring is arranged at the connection between the middle shell and the lower water tank body, the wet curtain is arranged between the upper water tank body and the lower water tank body, the middle shell is located in the cavity in the middle of the wet curtain, the third water tank is arranged on the upper water tank body, the second water tank is arranged on the lower water tank body, a plurality of water holes are arranged on the middle shell to communicate with the second water tank, the second water pump, the second water supply pipe, the low water level sensor and the high water level sensor are respectively located in the middle shell.

[0008] Furthermore, the water replenishment component includes a first water pump and a first water replenishment pipe. The first water pump is arranged in the first water tank. One end of the first water replenishment pipe is connected to the first water pump, and the other end thereof is connected to the third water tank. The first water pump replenishes water to the third water tank through the first water replenishment pipe.

[0009] Furthermore, a low water level probe and a high water level probe are respectively provided on the third water tank. When the water stored in the third water tank is lower than the position of the low water level probe, the low water level probe is triggered to control the start of the first water pump to replenish water to the third water tank; when the water stored in the third water tank is higher than the position of the high water level probe, the high water level probe is triggered to control the first water pump to stop replenishing water to the third water tank.

[0010] Furthermore, a water diversion box is provided between the third water tank and the wet curtain, and a water diversion cavity is provided on the water diversion box. The water diversion cavity is located directly below the sewer pipe. The water diversion cavity collects boiled water falling from the sewer pipe. A plurality of water drop holes are provided on the bottom surface of the water diversion cavity. The wet curtain is located directly below the water drop holes. The boiled water in the water diversion cavity drips from the water drop holes onto the wet curtain to moisten the wet curtain.

[0011] Furthermore, an annular step is provided around the top of each of the water drop holes.

[0012] Furthermore, a water collecting box is provided between the wet curtain and the second water tank, and a plurality of drain holes are provided on the water collecting box, so that excess hot water in the wet curtain drips into the second water tank through the drain holes.

[0013] Compared to the prior art, the present invention provides an evaporative humidifier comprising an outer shell, a first water tank, a wet curtain, a fan, and a third water tank disposed within the outer shell. The outer shell is provided with an air inlet and an air outlet, respectively. A flow duct is provided between the air inlet and the air outlet. The fan and the wet curtain are disposed within the flow duct. The third water tank is disposed above the wet curtain. Water stored in the first water tank is transferred to the third water tank via a water replenishment assembly. A heater is disposed at the bottom of the third water tank to heat the water stored in the third water tank to boil water. A downpipe is disposed at the bottom of the third water tank, the downpipe being located above the wet curtain. A solenoid valve is disposed on the downpipe. A thermostat is disposed on the third water tank. When the water stored in the third water tank boils, the thermostat controls the heater to stop heating and simultaneously controls the solenoid valve to open. The boiled water in the third water tank flows through the downpipe to the wet curtain below to moisten the wet curtain. The moist water vapor in the wet curtain is transported with the wind into the flow duct and discharged from the outer shell through the air outlet. The utility model cools the boiled water produced by the heater through a wet curtain, and then produces low-temperature moist water vapor which is discharged out of the air outlet along with the wind flow, effectively solving the problem of easy scalding caused by water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional schematic diagram of a preferred embodiment of the evaporative humidifier of the present utility model;

[0015] Figure 2 for Figure 1 Cross-sectional view of the middle MM;

[0016] Figure 3 for Figure 1 Cross-sectional view of NN;

[0017] Figure 4 for Figure 2 A three-dimensional schematic diagram of the center shell;

[0018] Figure 5 for Figure 4 A three-dimensional diagram from another angle;

[0019] Figure 6 for Figure 2 A three-dimensional schematic diagram of the middle water distribution box;

[0020] Figure 7 for Figure 2 Schematic diagram of the central water collection box.

[0021] The symbols in the accompanying drawings are described as follows:

[0022] Outer shell 1, air inlet 101, air outlet 102; first water tank 2; second water tank 3; third water tank 4, downpipe 41, open mouth 42; water collecting box 5, downhole 51, water collecting cavity 52; first water pump 6; second water pump 7; first water supply pipe 8; second water supply pipe 9; wet curtain 10; fan 11; air duct 12; solenoid valve 13; heater 14; high water level sensor 15; normally open solenoid valve 16; return pipe 17; central shell 18; upper water tank body 19; middle shell 20; lower water tank body 21; spokes 22; sealing ring 23; water through hole 24; low water level probe 25; high water level probe 26; water distribution box 27, water distribution cavity 271, downhole 272, annular step 273. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Please also refer to Figures 1 to 5 As shown in the figure, a preferred embodiment of the evaporative humidifier of the present invention includes an outer shell 1 and a first water tank 2, a second water tank 3, a third water tank 4, a second water pump 7, a second water supply pipe 9, a wet curtain 10, a fan 11 and a water supply assembly arranged in the outer shell 1. The water in the first water tank 2 is transported to the third water tank 4 through the water supply assembly. The water supply assembly includes a first water pump 6 and a first water supply pipe 8. Figure 2 and Figure 3 In the figure, the dotted line segment with an arrow indicates the direction of air flow.

[0025] An air inlet 101 and an air outlet 102 are provided on the outer shell 1. The air inlet 101 is provided on the side of the outer shell 1, and the air outlet 102 is provided on the top of the outer shell 1. An air duct 12 is provided between the air inlet 101 and the air outlet 102. A first water tank 2 is located at the bottom of the outer shell 1. A first water pump 6 is provided in the first water tank 2. A fan 11 and a wet curtain 10 are provided in the air duct 12.

[0026] The second water tank 3 is located between the wet curtain 10 and the first water tank 2. The lower portion of the wet curtain 10 is located within the second water tank 3. The second water pump 7 is located within the second water tank 3. The third water tank 4 is located above the wet curtain 10. One end of a first water supply pipe 8 is connected to the first water pump 6, and the other end is connected to the third water tank 4. The first water pump 2 supplies water to the third water tank 4 through the first water supply pipe 8. One end of a second water supply pipe 9 is connected to the second water pump 7, and the other end is connected to the third water tank 4. The second water pump 7 returns water to the third water tank 4 through the second water supply pipe 9.

[0027] A heater 14 is located at the bottom of the third water tank 4, heating the water therein to boil it. A downpipe 41 is located at the bottom of the third water tank 4, positioned above the wet curtain 10. A solenoid valve 13 is installed on the downpipe 41, and a thermostat (not shown) is also installed on the third water tank 4. Once the water in the third water tank 4 boils, the thermostat controls the heater 14 to stop heating and the solenoid valve 13 to open. The boiling water in the third water tank 4 flows through the downpipe 41 to the wet curtain 10 below, moistening it. The moisture in the wet curtain 10 then flows with the airflow into the airflow duct 12 and is discharged from the outer housing 1 through the air outlet 102. An opening 42 is located at the top of the third water tank 4, communicating with the airflow duct 12.

[0028] In the present invention, the water stored in the third water tank 4 is heated by the heater 14 to become boiling water. The boiling water in the third water tank 4 flows through the downpipe 41 into the wet curtain 10, moistening it. After the boiling water moistens the wet curtain 10, it becomes hot water. The hot steam from the boiling water enters the air duct 12 through the open port 42 and is discharged through the air outlet 102. The moist water vapor in the wet curtain 10 also flows into the air duct 12 with the airflow and is discharged through the air outlet 102. After the boiling water passes through the wet curtain 10, its temperature drops, and the resulting moist water vapor also cools, reducing the risk of burns to users and improving the safety of the humidifier. Furthermore, the present invention uses boiled and sterilized water to generate both hot steam (i.e., hot humidification) and moist water vapor (i.e., cold humidification). The hot steam from the hot humidification and the moist water vapor from the cold humidification are simultaneously discharged through the fan 11 through the air outlet 102, thereby increasing the humidification output.

[0029] The second water tank 3 collects excess hot water after wetting the wet pad 10. It is also equipped with a low water level sensor (not shown) and a high water level sensor 15. When the low water level sensor is triggered, the second water pump 7 is activated, returning water to the third water tank 4 through the second water supply pipe 9. When the high water level sensor 15 is triggered, the first water pump 6 is stopped, stopping the return of water to the third water tank 4, and the heater 14 is also stopped. This prevents excess hot water in the second water tank 3 from overflowing and wasting heat energy, thereby reducing power consumption. Furthermore, the water used in humidification is boiled and sterilized, and only this boiled and sterilized water participates in the circulating humidification process.

[0030] The second water tank 3 is also provided with a normally open solenoid valve 16 and a return pipe 17. The normally open solenoid valve 16 is provided on the return pipe 17, and the outlet of the return pipe 17 is connected to the first water tank 2. When the normally open solenoid valve 16 is de-energized, the return pipe 17 is opened, and the hot water in the second water tank 3 flows back into the first water tank 2 through the return pipe 17. This prevents the wet curtain 10 from being immersed in hot water, making it less likely to breed bacteria when it is dehydrated.

[0031] A central housing 18 is disposed within the outer shell 1. An upper water tank 19, a middle housing 20, and a lower water tank 21 are disposed on the central housing 18. The upper water tank 19 and the lower water tank 21 are positioned on the outer shell 1. The upper water tank 19 and the middle housing 20 are connected by a plurality of spokes 22. The gaps between adjacent spokes 22 form part of the air duct 12. A sealing ring 23 is provided at the connection between the middle housing 20 and the lower water tank 21. The wet curtain 10 is disposed between the upper water tank 19 and the lower water tank 21. The middle housing 20 is located within the cavity in the center of the wet curtain 10. The third water tank 4 is disposed on the upper water tank 19, and the second water tank 3 is disposed on the lower water tank 21. A plurality of water holes 24 are provided in the middle housing 20 to communicate with the second water tank 3. The second water pump 7 , the second water supply pipe 9 , the low water level sensor and the high water level sensor 15 are respectively located in the middle shell 20 , and the first water supply pipe 8 is located in the cavity of the wet curtain 10 .

[0032] A low water level probe 25 and a high water level probe 26 are respectively provided on the third water tank 4. When the water stored in the third water tank 4 is lower than the position of the low water level probe 25, the low water level probe 25 is triggered to control the start of the first water pump 6 to replenish water to the third water tank 4; when the water stored in the third water tank 4 is higher than the position of the high water level probe 26, the high water level probe 26 is triggered to control the first water pump 6 to stop replenishing water to the third water tank 4.

[0033] An anti-dry-burning temperature sensor (not shown in the figure) is set on the heater 14. When the temperature of the heater 14 exceeds the set temperature, the anti-dry-burning temperature sensor is triggered to control the heater 14 to stop heating, providing overheating protection for the humidifier.

[0034] Please also refer to Figure 2 、 Figure 6 As shown, a water diversion box 27 is disposed between the third water tank 4 and the wet curtain 10. A water diversion chamber 271 is provided on the water diversion box 27. The water diversion chamber 271 is located directly below the downpipe 41 and collects the boiled water that falls from the downpipe 41. Multiple water droplets 272 are provided on the bottom surface of the water diversion chamber 271, extending through the water diversion box 27. The wet curtain 10 is located directly below the water droplets 272. The boiled water in the water diversion chamber 271 drips through the water droplets 272 onto the wet curtain 10, moistening it.

[0035] An annular step 273 is provided around the top of each of the water holes 272. The annular step 273 is provided to facilitate the uniform drainage of the boiled water collected in the water-dividing box 27 and to evenly distribute the boiled water to the wet curtain 10, ensuring that the wet curtain 10 is completely wetted.

[0036] Please also refer to Figure 2 、 Figure 7As shown, a water collecting box 5 is provided between the wet curtain 10 and the second water tank 3. A plurality of drain holes 51 are provided on the water collecting box 5. The excess hot water in the wet curtain 10 drips into the second water tank 3 through the drain holes 51. A water collecting cavity 52 is also provided on the water collecting box 5. The drain holes 51 are provided on the bottom surface of the water collecting cavity 52. ​​The water collecting cavity 52 collects the excess hot water dripping from the wet curtain 10. The purpose of providing the water collecting box 5 is to collect the excess hot water in the wet curtain 10 and reduce the noise caused by the hot water dripping into the second water tank 3. On the other hand, the water collecting box 5 supports the wet curtain 10. The wet curtain 10 is at a certain distance from the inner bottom surface of the second water tank 3. After the humidifier is turned off, the wet curtain 10 does not need to be immersed in the hot water remaining in the second water tank 3. The wet curtain 10 is in a water-deficient state.

[0037] In the evaporative humidifier of this utility model, the water circulation process is as follows:

[0038] The water in the first water tank 2 is transported to the third water tank 4 via the first water pump 6 and the first water supply pipe 8. The water in the third water tank 4 is heated by the heater 14 to become boiling water, which then flows from the downpipe 41 into the wet curtain 10. The boiling water moistens the wet curtain 10 and becomes hot water, which is collected by the second water tank 3. The hot steam from the boiling water passes through the air duct 12 and is discharged from the air outlet 102. The hot water collected in the second water tank 3 is transported to the third water tank 4 via the second water pump 7 and the second water supply pipe 9 for recycling. The circulating water for humidification in this utility model is boiled and sterilized water, not cold water or raw water. The moisture for humidification is generated by boiled and sterilized water. Using boiled water for humidification prevents moisture from carrying bacteria and ensures the quality of the air after humidification.

[0039] In addition, after the humidifier is turned off, the excess hot water in the second water tank 3 flows back to the first water tank 2 through the normally open solenoid valve 16 and the return pipe 17. There is no excess hot water at the wet curtain 10 and it is not immersed in hot water for a long time. The wet curtain 10 is short of water and is not easy to breed bacteria.

[0040] The utility model uses a heater 14 to heat the water stored in the third water tank 4 and turn it into boiling water. The hot steam generated by the boiling water enters the air duct 12 from the open port 42 and is then discharged from the outer shell 1 from the air outlet 102. The boiling water flows from the downpipe 41 into the wet curtain 10 to moisten the wet curtain. The moist water vapor in the wet curtain 10 also enters the air duct 12 with the wind flow and is discharged from the outer shell 1 from the air outlet 102. Not only does the humidification amount increase through hot humidification and cold humidification, but the boiling water is cooled after passing through the wet curtain 10, and the low-temperature moist water vapor is discharged from the air outlet 102 with the wind flow, which effectively solves the problem of easy burns caused by water vapor.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An evaporative humidifier, comprising an outer shell, a first water tank, a wet curtain, and a fan disposed within the outer shell, an air inlet and an air outlet disposed on the outer shell, an air duct disposed between the air inlet and the air outlet, the fan and the wet curtain disposed within the air duct, and characterized in that: A third water tank is arranged above the wet curtain, and the water stored in the first water tank is transported to the third water tank through the water replenishment component; a heater is arranged at the bottom of the third water tank, and the heater heats the water stored in the third water tank to make it boiled water, and a downpipe is arranged at the bottom of the third water tank, and the downpipe is located above the wet curtain, and a solenoid valve is arranged on the downpipe, and a thermostat is arranged on the third water tank. After the water stored in the third water tank is boiled, the thermostat controls the heater to stop heating and controls the solenoid valve to open at the same time, and the boiled water in the third water tank flows through the downpipe to the wet curtain below to moisten the wet curtain, and the moist water vapor in the wet curtain enters the air duct with the wind flow and is discharged from the outer shell through the air outlet.

2. The evaporative humidifier according to claim 1, wherein A second water tank and a second water supply pipe are also provided in the outer shell. The second water tank is located between the wet curtain and the first water tank. The lower part of the wet curtain is located in the second water tank. The second water tank collects excess hot water after wetting the wet curtain. A second water pump, a low water level sensor and a high water level sensor are respectively provided in the second water tank. One end of the second water supply pipe is connected with the second water pump, and the other end thereof is connected with the third water tank. The second water pump returns water to the third water tank through the second water supply pipe; when the low water level sensor is triggered, the second water pump is controlled to start and return water to the third water tank through the second water supply pipe; when the high water level sensor is triggered, the first water pump is controlled to stop running and stop returning water to the third water tank, and the heater is controlled to stop heating at the same time.

3. The evaporative humidifier according to claim 2, wherein A normally open solenoid valve and a return pipe are also provided on the second water tank. The normally open solenoid valve is provided on the return pipe, and the outlet of the return pipe is connected to the first water tank. After the normally open solenoid valve is powered off, the return pipe is connected, and the hot water in the second water tank flows back to the first water tank through the return pipe.

4. The evaporative humidifier according to claim 2, wherein: A central shell is arranged in the outer shell, and an upper water tank body, a middle shell body and a lower water tank body are respectively arranged on the central shell, the upper water tank body and the lower water tank body are respectively positioned on the outer shell, the upper water tank body and the middle shell body are connected by a plurality of spokes, the gap between adjacent spokes is part of the air duct, a sealing ring is arranged at the connection between the middle shell body and the lower water tank body, the wet curtain is arranged between the upper water tank body and the lower water tank body, the middle shell is located in the cavity in the middle of the wet curtain, the third water tank is arranged on the upper water tank body, the second water tank is arranged on the lower water tank body, a plurality of water holes are arranged on the middle shell body to communicate with the second water tank, the second water pump, the second water supply pipe, the low water level sensor and the high water level sensor are respectively located in the middle shell.

5. The evaporative humidifier according to claim 1, wherein The water replenishment assembly includes a first water pump and a first water replenishment pipe. The first water pump is arranged in the first water tank. One end of the first water replenishment pipe is connected to the first water pump, and the other end thereof is connected to the third water tank. The first water pump replenishes water to the third water tank through the first water replenishment pipe.

6. The evaporative humidifier according to claim 5, characterized in that A low water level probe and a high water level probe are respectively provided on the third water tank. When the water stored in the third water tank is lower than the position of the low water level probe, the low water level probe is triggered to control the start of the first water pump to replenish water to the third water tank; when the water stored in the third water tank is higher than the position of the high water level probe, the high water level probe is triggered to control the first water pump to stop replenishing water to the third water tank.

7. The evaporative humidifier according to claim 1, wherein A water diversion box is provided between the third water tank and the wet curtain, and a water diversion cavity is provided on the water diversion box. The water diversion cavity is located directly below the sewer pipe and collects boiled water falling from the sewer pipe. A plurality of water drop holes are provided on the bottom surface of the water diversion cavity. The wet curtain is located directly below the water drop holes. The boiled water in the water diversion cavity drips from the water drop holes onto the wet curtain to moisten the wet curtain.

8. The evaporative humidifier according to claim 7, wherein An annular step is provided on the periphery of the top of each of the water drop holes.

9. The evaporative humidifier according to claim 1, wherein A water collecting box is provided between the wet curtain and the second water tank. A plurality of drain holes are provided on the water collecting box. The excess hot water in the wet curtain drips into the second water tank through the drain holes.

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