CN210889414U - Fan structure for improving air intake, evaporation device and noise reduction humidifier - Google Patents

Abstract

The utility model discloses a fan structure for improving air intake, an evaporation device and a noise reduction humidifier, which comprises a cross flow fan, wherein an air supply area is arranged in the cross flow fan; the cross-flow fan is characterized in that a first axial flow fan and a second axial flow fan are respectively installed at two ends of the cross-flow fan, air supply directions of the first axial flow fan and the second axial flow fan face to the inside of the cross-flow fan, and the fan structure is used for being installed inside an evaporation device so as to reduce the rotating speed and noise of the fan while guaranteeing humidification efficiency.

Description

Fan structure for improving air intake, evaporation device and noise reduction humidifier

Technical Field

The utility model relates to a humidification equipment field, concretely relates to improve fan structure, evaporation device of intake and fall humidifier of making an uproar.

Background

The humidifier is a device for increasing indoor humidity, is mainly used for increasing the indoor air humidity, is commonly used in a living room or a small office, enables people to live or work in an air environment with proper humidity, and avoids various body discomfort caused by air drying; the existing humidifiers are of various types, such as ultrasonic atomization humidifiers and electric heating humidifiers, although the final purpose of each type of humidifier is to increase the indoor air humidity, each type of humidifier has different advantages and disadvantages, the humidification rate of part of humidifiers in unit volume is not high, the consumption of electric energy of some humidifiers during moisture gasification is high, and the humidification quantity which can be generated by the unit power consumption of some humidifiers is limited; for example, the safety performance of the electric heating humidifier is high, and the ultrasonic atomization humidifier has high requirements on water quality.

The humidifier is a natural evaporation type humidifier which is most suitable for the market, an evaporation device on the market is immersed below the water surface of a water storage tank, when the humidifier works, the evaporator rotates, and a fan drives airflow to pass through the evaporator, so that moisture flows to the outside to realize humidification, and the evaporation principle is that moisture is naturally evaporated; because the evaporation device soaks and breeds the bacterium with water contact easily for a long time in the water tank, lead to using the evaporation device of non-consumptive material to need regularly to wash, the evaporation device that uses the consumptive material needs regularly to change.

In order to ensure that the air flow driven by the fan is in full contact with the evaporation device, an air channel needs to be arranged in the shell of the humidifier, the air channel needs to occupy certain equipment volume and material consumption, meanwhile, the fan needs to rotate at a high speed to drive enough air to flow so as to meet the humidification requirement of the evaporation device, the higher the rotating speed is, the larger the inevitable noise is, and therefore, how to improve the utilization rate of the air intake is worthy of research.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improve fan structure, evaporation device of intake and fall the humidifier of making an uproar to it reduces fan speed and noise when guaranteeing humidification efficiency to expect.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a fan structure for improving air intake comprises a cross-flow fan, wherein an air supply area is arranged in the cross-flow fan; the two ends of the cross-flow fan are respectively provided with a first axial flow fan and a second axial flow fan, the air supply directions of the first axial flow fan and the second axial flow fan face the inside of the cross-flow fan, and the fan structure is used for being arranged inside an evaporation device.

Preferably, a baffle is disposed at a middle portion of the cross flow fan, and the baffle is used to form two air supply regions in the cross flow fan.

Preferably, the first axial fan and the second axial fan are both arranged coaxially with the cross-flow fan and are used for driving the cross-flow fan, the first axial fan and the second axial fan to rotate simultaneously by the same transmission shaft

The utility model also provides an improve evaporation device of intake, including the evaporating drum that a plurality of evaporating dish formed, be equipped with the mounting hole in the above-mentioned evaporating dish, be equipped with foretell fan structure in the above-mentioned mounting hole.

Preferably, the evaporation pan is provided with a tapered protrusion, and the tapered protrusion has a front end matching with a rear end for engaging with a tapered protrusion of a different evaporation pan.

Preferably, the central axis of the evaporation drum and the central axis of the cross-flow fan are overlapped, and a gap is formed between a fan blade of the cross-flow fan and the evaporation tray, so that a rotation speed difference is formed between the evaporation drum and the cross-flow fan.

The utility model also provides a noise reduction humidifier, which comprises a shell, wherein the upper part of the shell is provided with an air outlet, and the side wall of the shell is provided with an air inlet; an evaporation water tank is arranged in the shell, and the evaporation device is arranged in the evaporation water tank; the evaporation water tank is provided with a water supply pipe, a water storage tank is arranged below the evaporation water tank, and the lower part of the evaporation water tank is provided with a water outlet which is communicated with the water storage tank.

Preferably, the water storage tank is provided with a water pump, an inlet end of the water pump is communicated with the bottom of the water storage tank, an outlet end of the water pump is connected to a water supply pipe, the delivery capacity of the water pump is larger than the discharge capacity of a water outlet at the lower part of the evaporation water tank, the evaporation water tank is further provided with an overflow opening, and the overflow opening is communicated with the water storage tank.

The technical scheme is that the overflow port is located at the maximum liquid level of the evaporation water tank, and the side wall of the water storage tank is provided with a flow guide inclined plate which is used for being matched with the overflow port for flow guide.

Preferably, the evaporation water tank is provided with a cover body, the air outlet is arranged on the cover body, and the air outlet is provided with a protective grid.

Compared with the prior art, the beneficial effects of the utility model are one of following at least:

the utility model discloses a fan structure is through first axial fan and second axial fan respectively to the regional air supply of cross-flow fan's air supply, and the regional wind unified output of will supplying air of rethread cross-flow fan to increase the intake, make the reduction rotational speed of cross-flow fan under the condition of invariable supply air volume, thereby noise reduction.

The utility model discloses a fan structure will send the subregion to cut apart through the baffle, avoids first axial fan and second axial fan to influence each other in same region, further improves air supply stability.

The utility model discloses an evaporation device with fan structural installation in evaporating drum, makes the air current blow off from evaporating drum's inside, has improved the area of contact of air current with the evaporating dish, and then has improved the utilization ratio of air inlet.

The utility model discloses an evaporation device makes a plurality of evaporating dish installation together through the toper arch, has the clearance of removal between two adjacent evaporating dishes, guarantees the efficiency of evaporation.

The utility model reduces the arrangement of air channels in the humidifier because the fan is directly arranged in the evaporation device, thereby ensuring the humidifying efficiency and further reducing the volume of the humidifier; the air flow circulation requirement in the shell can be ensured through the air inlet and the air outlet, the evaporation device is arranged in the evaporation water tank, water is injected into the evaporation water tank through the water supply pipe, the water is evaporated through the evaporation device, and the air flow is driven by the fan structure to directly contact with the evaporation device, so that humidification is realized; when external water supply is stopped, water in the evaporation water tank can flow into the water storage tank along with the water outlet to be stored, so that the evaporation device is kept dry in a non-use state, and bacteria breeding of the evaporation disc is reduced.

Drawings

Fig. 1 is a schematic view of the fan structure of the present invention.

Fig. 2 is a schematic diagram of the distribution of the fan structure of the present invention.

Fig. 3 is a schematic structural view of the baffle of fig. 1.

Fig. 4 is a schematic diagram of the distribution of the evaporation device of the present invention.

Fig. 5 is a schematic view of the structure of the evaporation pan of fig. 4.

Fig. 6 is a schematic view of the installation of the evaporation pan of fig. 4.

Fig. 7 is a schematic view of the installation of the evaporation device of the present invention.

Fig. 8 is a schematic structural distribution diagram of the noise reduction humidifier.

Fig. 9 is a schematic view of the mask mounting of the noise reducing humidifier.

Fig. 10 is a schematic view showing the installation position relationship of the noise reduction humidifier.

Fig. 11 is a schematic view of the installation of the evaporation device of the noise reduction humidifier.

FIG. 12 is a schematic view of a crossflow blower installation of a noise reducing humidifier.

Fig. 13 is a schematic view of the structure of the housing of the noise reduction humidifier.

Description of reference numerals:

the device comprises a cross-flow fan 1, an evaporation tray 3, a shell 4, an evaporation water tank 5, a water storage tank 6, a cover 7, a protective grid 8, a baffle 101, a first axial flow fan 201, a second axial flow fan 202, a mounting hole 301, a conical protrusion 302, an air outlet 401, an air inlet 402, a water supply pipe 501, a water pump 601 and a flow guide inclined plate 602.

Detailed Description

In order to make the objects, technical solutions and advantages of 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 merely illustrative of the invention and are not intended to limit the invention.

Example 1:

referring to fig. 1, fig. 2 and fig. 3, an embodiment of the present invention is a fan structure for improving air intake, including cross flow fan 1, wherein cross flow fan 1 is a conventional cross flow fan, and the air flow runs through impeller of cross flow fan 1 to realize air supply, because the blade of cross flow fan 1 is acted by twice force, the air flow can reach a long distance, but the air flow is forced to turn in the impeller, so the head loss is large, resulting in lower air supply efficiency, the cross flow fan 1 is provided with an air supply area, and the air flow is injected through the air supply area, so that the blade of cross flow fan 1 is forced once to take away partial air flow, thereby improving the air supply efficiency.

In general, in order to ensure sufficient air supply, the impeller of the cross-flow fan 1 needs to operate at high speed, however, when the impeller rotates, airflow enters the blade cascade from the open position of the impeller and passes through the inside of the impeller, and the higher the rotating speed of the impeller is, the more easily noise is generated; the two ends of the cross flow fan 1 are respectively provided with a first axial flow fan 201 and a second axial flow fan 202, the air supply directions of the first axial flow fan 201 and the second axial flow fan 202 face the inside of the cross flow fan 1, air flow is conveyed to an air supply area through the first axial flow fan 201 and the second axial flow fan 202, and the cross flow fan 1 can realize high-efficiency air supply through simple guiding action, so that the cross flow fan 1 also has a good air supply effect under the condition of reducing the rotating speed.

The fan structure is used for being arranged inside the evaporation device; since the evaporator is generally cylindrical, the length of the cross-flow fan 1 can be adapted to the width of the evaporator, and the cross-flow fan can be inserted into the evaporator to directly apply the sent air flow to the evaporator. Air is respectively supplied to the air supply area of the cross flow fan 1 through the first axial flow fan 201 and the second axial flow fan 202, and the air in the air supply area is uniformly output through the cross flow fan 1, so that the rotating speed of the cross flow fan is reduced under the condition of constant air supply quantity, and the noise is reduced.

Example 2:

based on the above embodiment, another embodiment of the present invention is that, the middle part of the cross flow fan 1 is provided with a baffle 101, wherein the baffle 101 is provided with a plurality of blade openings, 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 for forming two air supply regions inside the cross flow fan 1 by the baffle 101.

The fixing manner of the baffle 101 is various, such as hot melt adhesive fixing, pin limiting and the like; the two air supply areas respectively correspond to the first axial flow fan 201 and the second axial flow fan 202, so that air flows conveyed by the first axial flow fan 201 and the second axial flow fan 202 enter different air supply areas without mutual influence, and turbulence of the air supply areas caused by the fact that the first axial flow fan 201 and the second axial flow fan 202 reversely convey the air flows is prevented; therefore, the cross-flow fan 1 can work stably, the air supply area is divided by the baffle 101, and the air supply stability is further improved.

Example 3:

based on the above embodiment, referring to fig. 1 again, another embodiment of the present invention is that the first axial fan 201 and the second axial fan 202 are both disposed coaxially with the axial fan 1, wherein the first axial fan 201 and the second axial fan 202 are existing axial fans, the outer diameter of the first axial fan 201 and the outer diameter of the second axial fan 202 are adapted to the inner diameter of the sidewall of the axial fan 1, the orientations of the blades of the first axial fan 201 and the second axial fan 202 are opposite, and when the blades of the first axial fan 201 and the blades of the second axial fan 202 rotate in the same direction, the flow direction of the air is opposite; therefore, the same transmission shaft is used for driving the cross-flow fan 1 and the first axial flow fan 201 and the second axial flow fan 202 to rotate simultaneously; when the first axial fan 201, the second axial fan 202 and the cross-flow fan 1 are coaxially arranged, the rotating directions of the blades of the three can be the same, but the air supply directions are different, so that the airflow forms a flow track.

Example 4:

based on the above embodiments, referring to fig. 4 and 7, an embodiment of the present invention is an evaporation device for increasing the intake air, including an evaporation drum formed by a plurality of evaporation trays 3, wherein the evaporation drum is formed by stacking the evaporation trays 3, the lower end of the common evaporation drum is submerged into the water surface, the upper end of the evaporation drum is above the water surface, and water molecules are driven to contact with the air flow above the water surface in a rotating manner to realize evaporation; the evaporation pan 3 is provided with a mounting hole 301, and a fan structure is arranged in the mounting hole 301; the size of the mounting hole 301 is matched with the size of the fan structure, so that the requirements of placing and rotating the fan structure in the mounting hole 301 are met, the cross-flow fan 1 of the fan structure is not in contact with the inner wall of the evaporation disc 3, the evaporation disc 3 is prevented from blocking the normal work of the cross-flow fan 1, the airflow generated by the fan structure directly acts on the evaporation disc 3 on the evaporation roller, and the utilization rate of inlet air is improved.

Example 5:

based on the above embodiment, referring to fig. 5 and fig. 6, another embodiment of the present invention is that a tapered protrusion 302 is disposed on the evaporation pan 3, and the front end of the tapered protrusion 302 matches with the rear end of the tapered protrusion 302 for being engaged with the tapered protrusions 302 of different evaporation pans 3;

wherein, the protruding 302 rear end of toper is equipped with the jack, through the protruding 302 front end of jack butt joint toper to make different evaporating dish 3 closed assembly, because toper arch 302 is the toper, through the degree of depth that changes the protruding 302 inside jack of toper, make and have the clearance between the different evaporating dishes 3, thereby guarantee to pass through the air current between the evaporating dish 3, make the evaporating dish 3 fully contact with the air current of cross-flow fan 1 output, be favorable to improving the evaporation of moisture.

Example 6:

based on the above embodiment, another embodiment of the present invention is that, the central axis of the evaporation drum and the central axis of the cross flow fan 1 coincide with each other, a gap is provided between the fan blade of the cross flow fan 1 and the evaporation tray 3, so as to make the evaporation drum and the cross flow fan 1 form a rotation speed difference, wherein the evaporation drum and the cross flow fan 1 do not interfere with each other when rotating, wherein the cross flow fan 1, the first axial fan 201 and the second axial fan 202 are connected by a transmission shaft and driven by the same motor; wherein, the evaporation roller has a lower rotating speed, and is connected with a speed reducer by another motor, and the speed reducer is in power connection with the evaporation roller; the evaporation roller can rotate relatively stably and slowly, and moisture can be evaporated uniformly.

Example 7:

based on the above embodiments, referring to fig. 8, 9 and 10, an embodiment of the present invention is a noise reduction humidifier, which includes a housing 4, an air outlet 401 is disposed on an upper portion of the housing 4, and an air inlet 402 is disposed on a side wall of the housing 4; the inside of the shell 4 is ensured to be under normal pressure through the air inlet 402 and the air outlet 401, external dry air enters the shell 4 through the air inlet 402, after the inside of the shell 4 is humidified, the external dry air is discharged out of the shell 1 through the air outlet 401, an evaporation water tank 5 is arranged in the shell 4, and the evaporation device is arranged in the evaporation water tank 5; the evaporation water tank 5 is matched with the evaporation tray 3, specifically, the lower part of the evaporation tray 3 of the evaporation device is arranged in the liquid level of the evaporation water tank 5, the evaporation tray 3 rotates slowly along with the work of the evaporation device, liquid in the evaporation water tank 5 is adsorbed on the evaporation tray 3 and moves slowly along with the evaporation tray 3, and in the moving process, the evaporation tray 3 is in contact with airflow blown out by the cross flow fan 1, so that the humidity of the gas is improved, and the humid gas is discharged out of the shell 1 through the air outlet 401, so that the humidification is realized.

A water supply pipe 501 is arranged on the evaporation water tank 5, a water storage tank 6 is arranged below the evaporation water tank 5, a water outlet is arranged at the lower part of the evaporation water tank 5, and the water outlet is communicated with the water storage tank 6; the evaporation water is injected into the evaporation water tank 5 through a 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 disc 3, so that the normal work of the cross-flow fan 1, the first axial flow fan 201 and the second axial flow fan 202 is not influenced under the condition that the adsorption capacity of the evaporation disc 3 is enough; under the same humidification requirement, the rotating speeds of the cross-flow fan 1, the first axial flow fan 201 and the second axial flow fan 202 are reduced, so that the generation of noise is reduced, materials are easier to save in the design of an air channel due to the direct action of an evaporation device, and more importantly, the volume of the humidifier can be further optimized due to the combined design of a fan structure and the evaporation device; through the delivery port of evaporation water tank 5 lower part, when needs stop the humidification, delivery pipe 501 stops supplying water, and the water in the evaporation water tank 5 is whole to flow into storage water tank 6 along with the delivery port and stores, and then guarantees that evaporation device can keep dry under non-user state, avoids under the non-user state, and the soaking of evaporating pan 3 breeds the bacterium in the aquatic.

Example 8:

based on the above-mentioned embodiment, refer to fig. 8, fig. 10, fig. 11, fig. 12, another embodiment of the utility model is that, be equipped with water pump 601 in the above-mentioned storage water tank 6, above-mentioned water pump 601 entry end intercommunication storage water tank 6 bottom, above-mentioned water pump 601 exit end inserts delivery pipe 501, above-mentioned water pump 601 delivery capacity is greater than the emission of the delivery port of evaporation water tank 5 lower part, so that water pump 601 can make evaporation water tank 5 water level rise step by step, still be equipped with the gap on the above-mentioned evaporation water tank 5, above-mentioned gap is linked together with storage water tank 6, inject delivery pipe 501 with the water of storing in the storage water tank 6 through water pump 601, there is delivery pipe 501 to introduce evaporation water tank 5, wherein water pump 601 passes through.

Wherein, water pump 601 or delivery pipe 501 entry optional equipment filter element for by filter element to the rivers that get into evaporation water tank 5 filter, wherein filter element can be current filter screen, make the water source that gets into evaporation water tank 5 filtered by filter element at least once through case dress filter element, and then be used for the water impurity content of evaporation device evaporation to show the reduction.

Further, the overflow port is positioned at the maximum liquid level of the evaporation water tank 5, and the overflow port is positioned at the maximum liquid level of the evaporation water tank 5; set up the maximum liquid level height of gap in order to restrict evaporation water tank 5, when the liquid level reached gap height in evaporation water tank 5, unnecessary water all derived evaporation water tank 5 from the gap, made the water level height in the evaporation water tank 5 maintain invariable, effectively avoided the high floating change of liquid level to produce the influence to evaporation device humidification, made its humidification efficiency compare in current market humidifier and can show the promotion.

A diversion inclined plate 602 is arranged on the side wall of the water storage tank 6, and the diversion inclined plate 602 is used for matching with an overflow port for diversion; the diversion inclined plate 602 is located on one side of the overflow port and is used for guiding water to the diversion inclined plate 602 through the overflow port, and the diversion inclined plate 602 enables water to flow into the bottom of the water storage tank 6 along the inner wall of the water storage tank 6 for storage, so that noise is reduced.

Specifically, the guide plate is positioned on one side of the overflow port and used for guiding water flow to the side wall of the water storage tank 6 by the guide plate; the head end of the diversion sloping plate 602 is located below the overflow port 401, the tail end of the diversion sloping plate 602 extends towards the inner wall of the side wall of the water storage tank 6, the head end to the tail end of the diversion sloping plate 602 gradually inclines, the inclination angle does not exceed 90 degrees, and the flow rate required by the specific inclination angle is set automatically.

Example 9:

based on the above embodiment, referring to fig. 9 and 11, another embodiment of the present invention is that a cover 7 is disposed on the evaporation water tank 5, the air outlet 401 is disposed on the cover 7, and a protective grid 8 is disposed on the air outlet 401; the dry and wet air is separated through the cover body 7, the air flow ports are arranged on two side walls of the cover body 7 and respectively correspond to the first axial flow fan 201 and the second axial flow fan 202 and are used for enabling the air flow to enter the evaporation water tank 5 and evaporation devices in the cover body 7, the air outlet 401 is arranged above the cover body 7, the output direction of the cross flow fan 1 is aligned to the air outlet 401, the air flow can be output from the evaporation water tank 5 and the evaporation devices in the cover body 7, the protection grid 8 is arranged on the air outlet 401, the external objects are effectively prevented from contacting the evaporation devices, and the use safety of products is improved.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (10)

1. The utility model provides an improve fan structure of intake, includes cross-flow fan (1), its characterized in that: an air supply area is arranged in the cross flow fan (1); the evaporator is characterized in that 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), air supply directions of the first axial flow fan (201) and the second axial flow fan (202) face the inside of the cross flow fan (1), and the fan structure is used for being installed inside an evaporator.

2. The fan structure for increasing the air intake according to claim 1, wherein: and a baffle (101) is arranged in the middle of the cross-flow fan (1) and is used for enabling the baffle (101) to form two air supply areas in the cross-flow fan (1).

3. The fan structure for increasing the air intake according to claim 1, wherein: the first axial flow fan (201) and the second axial flow fan (202) are coaxially arranged with the cross-flow fan (1) and are used for driving the cross-flow fan (1), the first axial flow fan (201) and the second axial flow fan (202) to rotate simultaneously through the same transmission shaft.

4. The utility model provides an improve evaporation plant of intake, includes the evaporation drum that a plurality of evaporating dish (3) formed, its characterized in that: the evaporation pan (3) is provided with a mounting hole (301), and the fan structure of any one of claims 1 to 3 is arranged in the mounting hole (301).

5. The evaporation device for increasing the air intake of the air conditioner as claimed in claim 4, wherein: the evaporation tray (3) is provided with a conical bulge (302), the front end and the rear end of the conical bulge (302) are matched, and the conical bulges (302) of different evaporation trays (3) are clamped with each other.

6. The evaporation device for increasing the air intake of the air conditioner as claimed in claim 4, wherein: the central axis of the evaporation drum and the central axis of the cross-flow fan (1) are superposed with each other, and a gap is reserved between a fan blade of the cross-flow fan (1) and the evaporation disc (3) and used for enabling the evaporation drum and the cross-flow fan (1) to form a rotation speed difference.

7. A noise reduction humidifier is characterized in that: the humidifier comprises a shell (4), an air outlet (401) is formed in the upper portion of the shell (4), and an air inlet (402) is formed in the side wall of the shell (4); an evaporation water tank (5) is arranged in the shell (4), and an evaporation device as claimed in any one of claims 4 to 6 is installed in the evaporation water tank (5); the water supply pipe (501) is arranged on the evaporation water tank (5), a water storage tank (6) is arranged below the evaporation water tank (5), a water outlet is arranged at the lower part of the evaporation water tank (5), and the water outlet is communicated with the water storage tank (6).

8. The noise reducing humidifier according to claim 7, wherein: the water storage tank is characterized in that a water pump (601) is arranged in the water storage tank (6), the inlet end of the water pump (601) is communicated with the bottom of the water storage tank (6), the outlet end of the water pump (601) is connected into a water supply pipe (501), the conveying capacity of the water pump (601) is greater than the discharge capacity of a water outlet at the lower part of the evaporation water tank (5), an overflow gap is further arranged on the evaporation water tank (5), and the overflow gap is communicated with the water storage tank (6.

9. The noise reducing humidifier according to claim 8, wherein: the overflow port is located at the maximum liquid level of the evaporation water tank (5), the side wall of the water storage tank (6) is provided with a flow guide inclined plate (602), and the flow guide inclined plate (602) is used for being matched with the overflow port for flow guide.

10. The noise reducing humidifier according to claim 7, wherein: the evaporation water tank (5) is provided with a cover body (7), the air outlet (401) is arranged on the cover body (7), and the air outlet (401) is provided with a protective grid (8).

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