Fan structure for increasing air intake, evaporation device and noise-reducing humidifier

Abstract

The present invention discloses a fan structure for increasing the air intake volume, an evaporating device and a noise-reducing humidifier, comprising a cross-flow fan, in which an air supply area is provided; a first axial flow fan and a second axial flow fan are respectively installed at both ends of the cross-flow fan, and the air supply directions of the first axial flow fan and the second axial flow fan are both toward the inside of the cross-flow fan. The fan structure is used to be installed inside the evaporating device, in the hope of reducing the fan speed and noise while ensuring the humidification efficiency.

Description

Technical Field

[0001] The present invention relates to the field of humidification equipment, and in particular to a fan structure for increasing air intake volume, an evaporation device and a noise-reducing humidifier. Background Art

[0002] A humidifier is a device that increases indoor humidity. It is mainly used to increase indoor air humidity. It is commonly found in living rooms or small offices, allowing people to live or work in an air environment with suitable humidity and avoid various physical discomforts caused by dry air. There are many types of existing humidifiers, such as ultrasonic atomizing humidifiers and electric humidifiers. Although the ultimate goal of various humidifiers is to increase indoor air humidity, each type of humidifier has different advantages and disadvantages. The humidification rate per unit volume of some humidifiers is not high, some humidifiers consume a lot of electricity when vaporizing water, and some humidifiers are limited in the amount of humidification that can be generated per unit power consumption. For example, electric humidifiers have high safety performance requirements, and ultrasonic atomizing humidifiers have high requirements for water quality.

[0003] The most suitable humidifier for the market is the natural evaporation type. The evaporating device on the current market is immersed below the water surface of the water tank. When working, the evaporator rotates and the fan drives the air flow through the evaporator, thereby sending the moist air to the outside to achieve humidification. The evaporation principle is to utilize the natural evaporation of water. Since the evaporating device is immersed in the water tank and in contact with water for a long time, it is easy to breed bacteria, resulting in the use of non-consumable evaporating devices. The evaporating device needs to be cleaned regularly, and the evaporating device using consumables needs to be replaced regularly.

[0004] In order to ensure that the airflow driven by the fan is in full contact with the evaporating device, an air duct needs to be set in the shell of the humidifier. The setting of the air duct requires a certain amount of equipment volume and material consumption. At the same time, the fan needs to rotate at high speed to drive sufficient gas flow to meet the humidification needs of the evaporating device. The higher the speed, the greater the noise that will inevitably be generated. Therefore, it is worth studying how to improve the utilization rate of the incoming air volume. Summary of the invention

[0005] The object of the present invention is to provide a fan structure, an evaporating device and a noise-reducing humidifier for increasing the air intake volume, so as to reduce the fan speed and noise while ensuring the humidification efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A fan structure for increasing the amount of air intake comprises a cross-flow fan, in which an air supply area is provided; a first axial flow fan and a second axial flow fan are respectively installed at both ends of the cross-flow fan, and the air supply directions of the first axial flow fan and the second axial flow fan are both toward the inside of the cross-flow fan, and the fan structure is used to be installed inside an evaporating device.

[0008] Preferably, a baffle is provided in the middle of the cross flow fan, so as to form two air supply areas inside the cross flow fan.

[0009] Preferably, the first axial flow fan and the second axial flow fan are both coaxially arranged with the cross flow fan, so that the cross flow fan and the first axial flow fan and the second axial flow fan are driven to rotate by the same transmission shaft at the same time.

[0010] The present invention further provides an evaporation device for increasing the air intake volume, comprising an evaporation roller formed by a plurality of evaporation disks, wherein the evaporation disks are provided with mounting holes, and the mounting holes are provided with the fan structure.

[0011] Preferably, a conical protrusion is provided on the evaporation plate, and the front end and the rear end of the conical protrusion are matched, so that the conical protrusions of different evaporation plates can be engaged with each other.

[0012] Preferably, the central axis of the evaporation drum coincides with the central axis of the cross-flow fan, and a gap is provided between the blades of the cross-flow fan and the evaporation disk to create a rotation speed difference between the evaporation drum and the cross-flow fan.

[0013] The present invention also provides a noise reduction humidifier, which includes a shell, an air outlet is provided on the upper part of the shell, and an air inlet is provided on the side wall of the shell; an evaporative water tank is provided in the shell, and the evaporative device is installed in the evaporative water tank; a water supply pipe is provided on the evaporative water tank, a water storage tank is provided below the evaporative water tank, a water outlet is provided at the lower part of the evaporative water tank, and the water outlet is communicated with the water storage tank.

[0014] Preferably, a water pump is provided in the water tank, the inlet end of the water pump is connected to the bottom of the water tank, the outlet end of the water pump is connected to the water supply pipe, the delivery volume of the water pump is greater than the discharge volume of the water outlet at the lower part of the evaporation water tank, and the evaporation water tank is also provided with an overflow port, which is connected to the water tank.

[0015] A further technical solution is that the overflow port is located at the maximum liquid level of the evaporation water tank, and a guide ramp is provided on the side wall of the water storage tank, and the guide ramp is used to cooperate with the overflow port for drainage.

[0016] Preferably, a cover is provided on the evaporation water tank, the air outlet is placed on the cover, and a protective grille is provided on the air outlet.

[0017] Compared with the prior art, the beneficial effects of the present invention are at least one of the following:

[0018] The fan structure of the present invention supplies air to the air supply area of ​​the cross-flow fan through the first axial flow fan and the second axial flow fan respectively, and then the wind in the air supply area is uniformly output through the cross-flow fan, thereby increasing the air intake volume and reducing the rotation speed of the cross-flow fan under the condition of constant air supply volume, thereby reducing noise.

[0019] The fan structure of the present invention divides the air supply area by a baffle, thereby preventing the first axial flow fan and the second axial flow fan from influencing each other in the same area, and further improving the air supply stability.

[0020] The evaporation device of the present invention installs a fan structure in the evaporation drum, so that the airflow is blown out from the inside of the evaporation drum, thereby increasing the contact area between the airflow and the evaporation disk, and further improving the utilization rate of the incoming air.

[0021] The evaporation device of the present invention enables a plurality of evaporation plates to be installed together through the conical protrusions, and a movable gap is provided between two adjacent evaporation plates to ensure the evaporation efficiency.

[0022] The noise reduction humidifier of the present invention has a fan installed directly inside the evaporating device, thereby reducing the arrangement of the air duct in the humidifier, so that the volume of the humidifier can be further reduced while ensuring the humidification efficiency; the air flow circulation demand in the shell can be guaranteed by the air inlet and the air outlet, the evaporating device is placed in the evaporating water tank, and water is injected into the evaporating water tank through the water supply pipe, so that the water evaporates through the evaporating device, and the air flow is driven by the fan structure to directly contact the evaporating device to achieve humidification; when the external water supply stops, all the water in the evaporating water tank can flow into the water storage tank through the water outlet for storage, thereby ensuring that the evaporating device remains dry when not in use, and reducing the growth of bacteria on the evaporating disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the fan structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the fan structure distribution of the present invention.

[0025] Figure 3 for Figure 1 Schematic diagram of the baffle structure.

[0026] Figure 4 It is a schematic diagram of the distribution of the evaporation device of the present invention.

[0027] Figure 5 for Figure 4 Schematic diagram of the structure of the evaporation plate.

[0028] Figure 6 for Figure 4 Schematic diagram of the installation of the evaporator.

[0029] Figure 7 This is a schematic diagram of the installation of the evaporation device of the present invention.

[0030] Figure 8 Schematic diagram of the structural distribution of the noise reduction humidifier.

[0031] Fig. 9 This is a schematic diagram of the installation of the noise reduction humidifier cover.

[0032] Fig.10 This is a schematic diagram of the installation position of the noise reduction humidifier.

[0033] Fig.11 This is a schematic diagram of the installation of the evaporation device of the noise reduction humidifier.

[0034] Fig.12 Schematic diagram of the crossflow fan installation for the noise reduction humidifier.

[0035] Fig.13 This is a schematic diagram of the shell structure of the noise reduction humidifier.

[0036] Description of reference numerals:

[0037] 1-crossflow fan, 3-evaporation plate, 4-shell, 5-evaporation water tank, 6-water storage tank, 7-cover, 8-protective grille, 101-baffle, 201-first axial flow fan, 202-second axial flow fan, 301-mounting hole, 302-conical protrusion, 401-air outlet, 402-air inlet, 501-water supply pipe, 601-water pump, 602-guide inclined plate. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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.

[0039] Embodiment 1:

[0040] refer to Figure 1 , Figure 2 , Figure 3 As shown, one embodiment of the present invention is a fan structure for increasing the air intake volume, comprising a crossflow fan 1, wherein the crossflow fan 1 is an existing crossflow fan, and the airflow passes through the impeller of the crossflow fan 1 to realize air supply. Since the blades of the crossflow fan 1 are acted upon twice, the airflow can reach a very long distance, but the airflow is forced to be deflected in the impeller, so the pressure head loss is large, resulting in low air supply efficiency. An air supply area is provided in the crossflow fan 1, and the airflow is injected into the air supply area so that the blades of the crossflow fan 1 can take away part of the airflow by being acted upon once, thereby improving the air supply efficiency.

[0041] Normally, in order to ensure sufficient air supply, the impeller of the crossflow fan 1 needs to run at a high speed. However, when the impeller rotates, the airflow enters the blade grid from the opening of the impeller and passes through the inside of the impeller. The higher the impeller speed, the more likely it is to generate noise. The first axial flow fan 201 and the second axial flow fan 202 are respectively installed at both ends of the crossflow fan 1. The air supply directions of the first axial flow fan 201 and the second axial flow fan 202 are both toward the inside of the crossflow fan 1. The airflow is transported to the air supply area through the first axial flow fan 201 and the second axial flow fan 202. The crossflow fan 1 can achieve efficient air supply through a simple guiding effect. Therefore, the crossflow fan 1 also has a good air supply effect when the speed is reduced.

[0042] The fan structure is used to be installed inside the evaporation device; since the evaporation device is usually cylindrical, the crossflow fan 1 can be inserted into the evaporation device when the length is adapted to the width of the evaporation device, and the airflow sent out directly acts on the evaporation device. The first axial flow fan 201 and the second axial flow fan 202 respectively send air to the air supply area of ​​the crossflow fan 1, and then the air in the air supply area is uniformly output through the crossflow fan 1, so that the crossflow fan can reduce the rotation speed under the condition of constant air supply, thereby reducing noise.

[0043] Embodiment 2:

[0044] Based on the above embodiment, another embodiment of the present invention is that a baffle 101 is provided in the middle of the above-mentioned cross-flow fan 1, wherein a plurality of blade openings are opened on the baffle 101, and the baffle 101 is inserted into the blades of the cross-flow fan 1 through the blade openings and fixed in the middle of the cross-flow fan 1, so that the baffle 101 forms two air supply areas inside the cross-flow fan 1.

[0045] Among them, there are many ways to fix the baffle 101, such as hot melt adhesive fixing, pin limiting, etc.; through the two air supply areas corresponding to the first axial flow fan 201 and the second axial flow fan 202 respectively, the airflows delivered by the first axial flow fan 201 and the second axial flow fan 202 enter different air supply areas without affecting each other, thereby preventing the first axial flow fan 201 and the second axial flow fan 202 from delivering air in reverse and causing turbulence in the air supply area; thereby facilitating the stable operation of the cross-flow fan 1, and dividing the air supply area by the baffle 101, further improving the air supply stability.

[0046] Embodiment 3:

[0047] Based on the above embodiments, Figure 1As shown, another embodiment of the present invention is that the above-mentioned first axial flow fan 201 and the second axial flow fan 202 are both coaxially arranged with the cross-flow fan 1, wherein the first axial flow fan 201 and the second axial flow fan 202 are existing axial flow fans, and the outer diameter dimensions of the first axial flow fan 201 and the second axial flow fan 202 are adapted to the inner diameter dimension of the side wall of the cross-flow fan 1, and the fan blades of the first axial flow fan 201 and the second axial flow fan 202 are in opposite directions, so that when the fan blades of the first axial flow fan 201 and the fan blades of the second axial flow fan 202 rotate in the same direction, the gas flows in opposite directions; thereby, the cross-flow fan 1 and the first axial flow fan 201 and the second axial flow fan 202 are driven to rotate by the same transmission shaft at the same time; when the first axial flow fan 201, the second axial flow fan 202 and the cross-flow fan 1 are coaxially arranged, the fan blades of the three can rotate in the same direction, but the air supply directions are different, so that the airflow forms a flow trajectory.

[0048] Embodiment 4:

[0049] Based on the above embodiments, reference Figure 4 , Figure 7 As shown, one embodiment of the present invention is an evaporation device for increasing the amount of air intake, comprising an evaporation roller formed by a plurality of evaporation disks 3, wherein the evaporation roller is formed by stacking the evaporation disks 3, and the lower end of the evaporation roller is usually immersed in the water surface, and the upper end of the evaporation roller is above the water surface, and the water molecules are driven to contact with the airflow above the water surface in the form of rotation to achieve evaporation; the evaporation disk 3 is provided with a mounting hole 301, and the mounting hole 301 is equipped with a fan structure; wherein the size of the mounting hole 301 is adapted to the fan structure to meet the requirements of placing and rotating the fan structure in the mounting hole 301, and the cross-flow fan 1 of the fan structure does not contact the inner wall of the evaporation disk 3, so as to avoid the evaporation disk 3 hindering the normal operation of the cross-flow fan 1, so that the airflow generated by the fan structure directly acts on the evaporation disk 3 on the evaporation roller, thereby improving the utilization rate of the air intake.

[0050] Embodiment 5:

[0051] Based on the above embodiments, reference Figure 5 , Figure 6 As shown, another embodiment of the present invention is that the evaporation plate 3 is provided with a conical protrusion 302, and the front end and the rear end of the conical protrusion 302 are matched, so that the conical protrusions 302 of different evaporation plates 3 are engaged with each other;

[0052] Among them, a socket is provided at the rear end of the conical protrusion 302, and the front end of the conical protrusion 302 is connected to the socket through the front end, so that different evaporation plates 3 can be stacked. Since the conical protrusion 302 is conical, a gap is created between different evaporation plates 3 by changing the depth of the socket inside the conical protrusion 302, thereby ensuring that air can pass through the evaporation plates 3, so that the evaporation plates 3 are fully in contact with the airflow output by the cross-flow fan 1, which is beneficial to improving the evaporation of moisture.

[0053] Embodiment 6:

[0054] Based on the above embodiment, another embodiment of the present invention is that the central axis of the above-mentioned evaporation roller coincides with the central axis of the cross-flow fan 1, and there is a gap between the fan blades of the above-mentioned cross-flow fan 1 and the evaporation disk 3, which is used to form a rotation speed difference between the evaporation roller and the cross-flow fan 1, wherein the evaporation roller and the cross-flow fan 1 do not interfere with each other when they rotate, wherein the cross-flow fan 1, the first axial flow fan 201, and the second axial flow fan 202 are connected by a transmission shaft and driven by the same motor; wherein the evaporation roller rotates at a slower speed, and another motor is connected to the reducer, and the reducer is connected to the evaporation roller power; the evaporation roller rotates relatively slowly and stably, which is conducive to the uniform evaporation of moisture.

[0055] Embodiment 7:

[0056] Based on the above embodiments, reference Figure 8 , Fig. 9 , Fig.10 As shown, one embodiment of the present invention is a noise reduction humidifier, the humidifier includes a shell 4, an air outlet 401 is provided on the upper part of the shell 4, and an air inlet 402 is provided on the side wall of the shell 4; the air inlet 402 and the air outlet 401 ensure that the inside of the shell 4 is under normal air pressure, the external dry gas enters the shell 4 through the air inlet 402, and is discharged from the shell 1 through the air outlet 401 after being humidified inside the shell 4, the shell 4 is provided with an evaporation water tank 5, and the evaporation device is installed in the evaporation water tank 5; the evaporation water tank 5 is adapted to the evaporation disk 3, specifically, the lower part of the evaporation disk 3 of the evaporation device is placed in the liquid level of the evaporation water tank 5, and as the evaporation device works, the evaporation disk 3 rotates slowly, the liquid in the evaporation water tank 5 is adsorbed on the evaporation disk 3, and moves slowly with the evaporation disk 3, during its movement, the evaporation disk 3 contacts with the airflow blown out by the cross-flow fan 1, thereby increasing the humidity of the gas, and the humidified gas is discharged from the shell 1 through the air outlet 401 to achieve humidification.

[0057] A water supply pipe 501 is provided on the evaporation water tank 5, a water storage tank 6 is provided below the evaporation water tank 5, a water outlet is provided at the lower part of the evaporation water tank 5, and the water outlet is communicated with the water storage tank 6; evaporation water is injected into the evaporation water tank 5 through the water supply pipe 501, and the water injection height of the evaporation water tank 5 is lower than the lower end of the mounting hole 301 of the evaporation disk 3, so as to ensure that the adsorption amount of the evaporation disk 3 is sufficient without affecting the normal operation of the cross flow fan 1, the first axial flow fan 201, and the second axial flow fan 202; under the same humidification demand, the cross flow fan 1, the first axial flow fan 201, The rotation speed of the second axial flow fan 202 is reduced, thereby reducing the generation of noise. Since it directly acts on the evaporating device, it is easier to save materials in the air duct design. More importantly, the fan structure and the evaporating device are designed in combination, which can further optimize the volume of the humidifier. Through the water outlet at the bottom of the evaporating water tank 5, when humidification needs to be stopped, the water supply pipe 501 stops supplying water, and all the water in the evaporating water tank 5 flows into the water storage tank 6 through the water outlet for storage, thereby ensuring that the evaporating device can remain dry when not in use, and avoiding the evaporating disk 3 being immersed in water and breeding bacteria when not in use.

[0058] Embodiment 8:

[0059] Based on the above embodiments, reference Figure 8 , Fig.10 , Fig.11 , Fig.12 As shown, another embodiment of the present invention is that a water pump 601 is provided in the water storage tank 6, the inlet end of the water pump 601 is connected to the bottom of the water storage tank 6, and the outlet end of the water pump 601 is connected to the water supply pipe 501, the delivery amount of the water pump 601 is greater than the discharge amount of the water outlet at the lower part of the evaporation water tank 5, so that the water pump 601 can gradually increase the water level of the evaporation water tank 5, and the evaporation water tank 5 is also provided with an overflow port, which is connected to the water storage tank 6, and the water stored in the water storage tank 6 is injected into the water supply pipe 501 through the water pump 601, and the water supply pipe 501 is introduced into the evaporation water tank 5, wherein the water pump 601 is connected to the water supply pipe 501 through a pipeline, and the water supply pipe 501 can be a three-way pipe structure.

[0060] Among them, a filter element is optionally installed at the inlet of the water pump 601 or the water supply pipe 501, which is used to filter the water flow entering the evaporation water tank 5 by the filter element, wherein the filter element can be an existing filter net. By installing the filter element, the water source entering the evaporation water tank 5 is filtered by the filter element at least once, thereby significantly reducing the impurity content of the water used for evaporation of the evaporation device.

[0061] Furthermore, the overflow port is located at the maximum liquid level of the evaporation water tank 5; the overflow port is located at the maximum liquid level of the evaporation water tank 5; the overflow port is set to limit the maximum liquid level height of the evaporation water tank 5. When the liquid level in the evaporation water tank 5 reaches the height of the overflow port, excess water is discharged from the overflow port to the evaporation water tank 5, so that the water level height in the evaporation water tank 5 is maintained constant, effectively avoiding the influence of the floating change of the liquid level height on the humidification of the evaporation device, so that the humidification efficiency can be significantly improved compared with the existing humidifiers on the market.

[0062] The side wall of the water tank 6 is provided with a guide inclined plate 602, which is used to cooperate with the overflow outlet for drainage; wherein the guide inclined plate 602 is located on one side of the overflow outlet, and is used for the overflow outlet to drain water to the guide inclined plate 602, and the guide inclined plate 602 allows the water to flow along the inner wall of the water tank 6 into the bottom of the water tank 6 for storage, thereby reducing the generation of noise.

[0063] Specifically, the guide plate is located on one side of the overflow port, and is used to guide the water flow to the side wall of the water tank 6 by the guide plate; the head end of the guide inclined plate 602 is located below the overflow port 401, and the tail end of the guide inclined plate 602 extends toward the inner wall of the side wall of the water tank 6, and the guide inclined plate 602 is gradually inclined from the head end to the tail end, and the inclination angle does not exceed 90 degrees. The specific inclination angle required flow rate is set by yourself.

[0064] Embodiment 9:

[0065] Based on the above embodiments, reference Fig. 9 , Fig.11 As shown, another embodiment of the present invention is that a cover body 7 is provided on the evaporation water tank 5, the air outlet 401 is placed on the cover body 7, and a protective grille 8 is provided on the air outlet 401; the dry and wet air are separated by the cover body 7, and air flow openings are provided on both side walls of the cover body 7, and the air flow openings correspond to the first axial flow fan 201 and the second axial flow fan 202 respectively, and are used for air flow to enter the evaporation water tank 5 and the evaporation device in the cover body 7, wherein the air outlet 401 is arranged above the cover body 7, so that the output direction of the cross-flow fan 1 is aligned with the air outlet 401, so that the air flow can be output from the evaporation water tank 5 and the evaporation device in the cover body 7, and the protective grille 8 is provided on the air outlet 401, so as to effectively prevent foreign objects from contacting the evaporation device, thereby improving the safety of product use.

[0066] The "one embodiment", "another embodiment", "embodiment", "preferred embodiment" and the like mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment as included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0067] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components and / or layout of the subject combination layout. In addition to the variations and modifications made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. An evaporation device for increasing air intake, comprising an evaporation roller formed by a plurality of evaporation disks (3), characterized in that: The evaporation disk (3) is provided with a mounting hole (301), and a fan structure for increasing the air intake volume is installed in the mounting hole (301), and the fan structure for increasing the air intake volume comprises a cross-flow fan (1), and an air supply area is provided in the cross-flow fan (1); a first axial flow fan (201) and a second axial flow fan (202) are respectively installed at two ends of the cross-flow fan (1), and the air supply directions of the first axial flow fan (201) and the second axial flow fan (202) are both oriented toward the inside of the cross-flow fan (1), and the fan structure is used to be installed inside the evaporation device; A baffle (101) is provided in the middle of the cross-flow fan (1), and is used to form two air supply areas inside the cross-flow fan (1) through the baffle (101); The first axial flow fan (201) and the second axial flow fan (202) are both coaxially arranged with the cross flow fan (1), and are used to simultaneously drive the cross flow fan (1) and the first axial flow fan (201) and the second axial flow fan (202) to rotate via the same transmission shaft.

2. The evaporation device for increasing air intake according to claim 1, characterized in that: The evaporation plate (3) is provided with a conical protrusion (302), the front end and the rear end of the conical protrusion (302) being matched, so that the conical protrusions (302) of different evaporation plates (3) are mutually engaged.

3. The evaporation device for increasing air intake according to claim 1, characterized in that: The central axis of the evaporation drum coincides with the central axis of the cross-flow fan (1), and a gap is provided between the fan blades of the cross-flow fan (1) and the evaporation disk (3) to form a rotation speed difference between the evaporation drum and the cross-flow fan (1).

4. A noise reduction humidifier, characterized in that: The humidifier comprises a shell (4), an air outlet (401) is provided at the upper part of the shell (4), and an air inlet (402) is provided at the side wall of the shell (4); an evaporation water tank (5) is provided in the shell (4), and an evaporation device according to any one of claims 1 to 3 is installed in the evaporation water tank (5); a water supply pipe (501) is provided on the evaporation water tank (5), a water storage tank (6) is provided below the evaporation water tank (5), and a water outlet is provided at the lower part of the evaporation water tank (5), and the water outlet is connected to the water storage tank (6).

5. The noise reduction humidifier according to claim 4, characterized in that: A water pump (601) is provided in the water storage tank (6); an inlet end of the water pump (601) is connected to the bottom of the water storage tank (6); an outlet end of the water pump (601) is connected to a water supply pipe (501); a delivery volume of the water pump (601) is greater than a discharge volume of a water outlet at the bottom of the evaporation water tank (5); an overflow port is also provided on the evaporation water tank (5); and the overflow port is connected to the water storage tank (6).

6. The noise reduction humidifier according to claim 5, characterized in that: The overflow port is located at the maximum liquid level of the evaporation water tank (5), and a guide inclined plate (602) is provided on the side wall of the water storage tank (6), wherein the guide inclined plate (602) is used to cooperate with the overflow port for drainage.

7. The noise reduction humidifier according to claim 4, characterized in that: A cover body (7) is provided on the evaporation water tank (5), the air outlet (401) is disposed on the cover body (7), and a protective grille (8) is provided on the air outlet (401).

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