Purifying humidifier with double-channel air duct switching device

Abstract

The utility model relates to the field of purification, and discloses a purification humidifier with a double-channel air duct switching device, which comprises a purifier, a plurality of first air ports are circumferentially arranged at the top of the side wall of the purifier, a humidification component is arranged at the top in the purifier, a plurality of second air ports are circumferentially arranged at the top of the side wall of the humidification component, and a switching component is rotatably clamped at the top of the purifier. The switching assembly comprises a plurality of third air ports and fourth air ports which are formed in the circumferential direction, when the first air ports are aligned to the third air ports, the second air ports and the fourth air ports are staggered, and when the second air ports are aligned to the fourth air ports, the first air ports and the third air ports are staggered; by arranging the switching assembly, alignment and dislocation between the air ports can be changed, so that the air flow path is changed, purified air can be directly discharged or discharged after passing through the humidifying assembly, the purifying mode and the purifying and humidifying mode can be flexibly and rapidly switched, the mode can be selected according to the environment requirement, unnecessary humidifying operation is avoided, and the purifying efficiency is improved. The influence on comfort or mould breeding is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to purifier technical field, especially purifier with double channel air duct switching device. BACKGROUND

[0002] With the increasingly serious air pollution problem, the composite household appliance equipment with air purification and humidification functions gradually becomes the market mainstream. However, the current market purifier humidifier still has obvious deficiencies in actual use, mainly in the following two aspects:

[0003] First, the existing purifier humidifier mostly adopts fixed air duct design, can only run the purification and humidification modes synchronously, causes filter core to be in high humidity working environment for a long time, significantly shortens the service life of HEPA filter screen; in addition, in the south plum rain season or the north heating period and the like specific environment, indoor humidity is often in the appropriate range, at this time, if the humidification function continues to run, not only will cause energy waste, but also can cause humidity to be too high, influence comfort and can breed mould; the fixed air duct design cannot flexibly switch the working mode according to the environmental demand, seriously reduces the use efficiency and practicability of the equipment;

[0004] Second, the switching device using mechanical baffle or split type assembly can realize mode separation, but there are problems such as complicated operation (need to disassemble parts to complete mode switching), insufficient sealing (air duct leakage rate > 15%), especially the traditional rotary switching mechanism mostly adopts multilayer superposition type guide vane design, causes the equipment height to increase by more than 30%, not only affects the product appearance and stability, but also reduces the assembly efficiency; in addition, part of purifier adopts the form of electric switching mode, although simplifies the operation, but increases the power consumption and manufacturing cost, at the same time, due to the complex structure, causes the failure rate to rise, further influences the equipment life. SUMMARY

[0005] Therefore, it is necessary to provide purifier humidifier with double channel air duct switching device for the problem that the existing purifier humidifier is difficult to switch mode.

[0006] Purifier humidifier with double channel air duct switching device, comprising:

[0007] Purifier, the top of the side wall of the purifier is circumferentially provided with a plurality of first air outlets;

[0008] Humidification assembly, the humidification assembly is arranged at the inner top of the purifier, and the top of the side wall of the humidification assembly is circumferentially provided with a plurality of second air outlets;

[0009] Switching assembly, the switching assembly is rotationally connected to the top of the purifier, and the switching assembly comprises a plurality of third air outlets and fourth air outlets circumferentially provided;

[0010] The first air port is matched with the third air port, and the second air port is matched with the fourth air port;

[0011] When the first air port is aligned with the third air port, the second air port is misaligned with the fourth air port;

[0012] When the second air port is aligned with the fourth air port, the first air port is misaligned with the third air port.

[0013] In one of the embodiments, the switching assembly comprises a ring plate, the outer bottom of the ring plate is integrally connected with a first side plate, the inner bottom of the ring plate is integrally connected with a second side plate, the third air ports are evenly arranged in the first side plate, and the fourth air ports are evenly arranged in the second side plate.

[0014] In one of the embodiments, one end of the outer side wall of the ring plate is fixedly connected with a tab, and the end of the tab is provided in a rounded corner.

[0015] In one of the embodiments, the center of the ring plate is fixedly connected with a grille.

[0016] In one of the embodiments, the first air port and the third air port are consistent in size and shape, and the second air port and the fourth air port are consistent in size and shape.

[0017] In one of the embodiments, the outer side wall of the humidifying assembly and the inner side wall of the purifier form an air outlet channel, and the air outlet channel is in air connection with the first air port and the second air port.

[0018] In one of the embodiments, the humidifying assembly comprises a water tank, a wet curtain is placed in the water tank in a ring shape, the outer ring area of the wet curtain is greater than or equal to the area of the grille, and the top of the wet curtain is in abutment with the bottom of the grille.

[0019] In one of the embodiments, the outer side wall of the water tank is integrally connected with a through pipe, the end of the through pipe penetrates through and protrudes from the outer side wall of the purifier, and the top plane of the through pipe is flush with the bottom plane of the second air port.

[0020] In one of the embodiments, the top plate is fixedly connected between the top of the purifier and the top of the water tank, the top plate is matched with the ring plate, and the top plate is in abutment with the bottom of the ring plate; the outer side wall of the purifier on the outer side of the first air port is provided with a limiting groove, the inner side wall of the first side plate is in abutment with the outer side wall of the purifier, and the bottom of the first side plate is in abutment with the limiting groove, and the inner side wall of the second side plate is in abutment with the inner side wall of the water tank.

[0021] In one of the embodiments, the side wall of the purifier and the side wall of the water tank corresponding to the position are provided with transparent windows.

[0022] Compared with the prior art, the purifier has the advantages that:

[0023] (1) By setting the switching assembly, the rotating ring plate and the side plate can be rotated to change the alignment and misalignment between the air outlets, thereby changing the airflow path, so that the purified air can be directly discharged or discharged after passing through the humidifying assembly, realizing flexible and rapid switching between the purification and purification humidification modes, and users can select to run the purification mode alone or run the purification humidification mode at the same time according to environmental requirements, avoiding unnecessary humidification operation, preventing the influence on comfort or the breeding of mold, saving energy and prolonging the service life of the filter screen;

[0024] (2) By setting the integrated rotating and clamping ring plate and side plate, mode switching can be completed without disassembling the parts, and the equipment assembly is facilitated, and the operation and assembly convenience are significantly improved;

[0025] (3) By the alignment and misalignment between the air outlets, and the adaptation of the wet curtain and the grid, the sealing performance can be improved, the air duct leakage rate can be reduced, the airflow can be ensured to pass through efficiently, and the purification efficiency can be improved;

[0026] (4) By setting the close fit of the switching assembly and the top of the purifier, abandoning the multi-layer superimposed type flow guide vane design, adopting an integrated air duct structure, the height of the whole machine is reduced by more than 25%, the appearance is more simple and beautiful, and the placing stability and assembly efficiency are improved;

[0027] (5) By adopting a mechanical manual rotating switching mechanism, no additional power is needed, power consumption and manufacturing cost are reduced, failure rate is reduced, and equipment service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a perspective view of a purification humidifier with a double-channel air duct switching device;

[0029] Figure 2 It is a sectional view of a purification humidifier with a double-channel air duct switching device;

[0030] Figure 3 It is an exploded view of a purification humidifier with a double-channel air duct switching device;

[0031] Figure 4 It is a structure schematic view of a purification humidification mode of a purification humidifier with a double-channel air duct switching device (without a wet curtain);

[0032] Figure 5 It is a structure schematic view of a pure purification mode of a purification humidifier with a double-channel air duct switching device (without a wet curtain);

[0033] Figure 6 Part structure diagram of the purification humidifier with double-channel air duct switching device.

[0034] In the correspondence between the reference signs and the component names is:

[0035] 1, purifier; 2, first air port; 3, humidification assembly; 4, second air port; 5, switching assembly; 6, third air port; 7, fourth air port; 8, ring plate; 9, first side plate; 10, second side plate; 11, tab; 12, grille; 13, air outlet duct; 14, water tank; 15, wet curtain; 16, through pipe; 17, top plate; 18, transparent window; 19, limiting groove; 20, first limiting block; 21, second limiting block; 22, limiting plate. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above purpose, features and advantages of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0038] Some embodiments of the present application will be described below with reference to the accompanying drawings.

[0039] As shown in the drawings, the present embodiment discloses a purification humidifier with double-channel air duct switching device, comprising: Figures 1 to 6

[0040] ​The purifier 1 is provided with a plurality of first air inlets 2 in the top of the side wall in a circumferential direction, a humidifying assembly 3 is arranged at the top of the inner side wall of the purifier 1, a plurality of second air inlets 4 are arranged in the top of the side wall of the humidifying assembly 3 in a circumferential direction, and a switching assembly 5 is rotatably connected to the top of the purifier 1, wherein the switching assembly 5 comprises a plurality of third air inlets 6 and fourth air inlets 7 arranged in a circumferential direction, the first air inlets 2 are matched with the third air inlets 6, the second air inlets 4 are matched with the fourth air inlets 7, the second air inlets 4 are misaligned with the fourth air inlets 7 when the first air inlets 2 are aligned with the third air inlets 6, and the first air inlets 2 are misaligned with the third air inlets 6 when the second air inlets 4 are aligned with the fourth air inlets 7. Compared with the prior art, the purifier has the following advantages: (1) the switching assembly 5 is arranged, the rotating ring plate 8 and the side plate can be rotated to change the alignment and misalignment between the air inlets, thereby changing the air flow path, so that the purified air can be directly discharged or discharged after passing through the humidifying assembly 3, the purifying mode and the purifying and humidifying mode can be flexibly and quickly switched, the user can select to run the purifying mode alone or run the purifying and humidifying mode at the same time according to the environmental requirements, unnecessary humidifying operation is avoided, the comfort level is prevented from being affected or mold is prevented from breeding, energy is saved, and the filter screen life is prolonged; (2) the integrated rotating and connecting ring plate 8 and side plate are arranged, the mode switching can be completed without disassembling the components, the equipment assembly is facilitated, and the operation and assembly convenience are significantly improved; (3) the alignment and misalignment between the air inlets and the matching of the wet curtain 15 and the grating 12 can improve the sealing performance, reduce the air duct leakage rate, ensure the efficient air flow, and improve the purification efficiency; (4) the switching assembly 5 is closely matched with the top of the purifier 1, the multi-layer superimposed flow guide vane design is abandoned, the integrated air duct structure is adopted, the overall height is reduced by more than 25%, the appearance is more simple and beautiful, the placing stability and the assembly efficiency are improved; (5) the mechanical manual rotating switching mechanism is adopted, no additional power is required for driving, the power consumption and the manufacturing cost are reduced, the failure rate is reduced, and the service life of the equipment is prolonged.

[0041] The main body of the purifier 1 is used for purifying air, and the main acting structures inside the main body include:

[0042] The air inlet is arranged on the lower half of the outer side wall of the purifier 1, is used for air entering the purifier 1, the filter system is arranged on the lower half of the purifier 1, is used for intercepting dust and other large particles, filtering PM2.5 and other small particles, and adsorbing VOCs and other gaseous pollutants, and the like, and performing multi-layer filtration and purification on the air to obtain purified air, the fan is arranged above the filter system in the purifier 1, is used for providing power for air flow, and ensures that the air can enter from the air inlet and pass through each level of the filter unit in turn and be discharged at last, and the air outlet, that is, the first air inlet 2 or the second air inlet 4, is used for discharging clean air.

[0043] The humidifying assembly 3 is used to increase air humidity, and the switching assembly 5 is used to switch the working mode. The working mode switching principle of the embodiment is as follows:

[0044] (1) Pure air mode (for example, Figure 5 ):

[0045] The switching assembly 5 is rotated, so that the first air port 2 is aligned with the third air port 6 to form an air outlet, while the second air port 4 and the fourth air port 7 are misaligned and closed to block the air flow into the humidifying assembly 3, thereby preventing the humidifying assembly 3 from contacting the air flow. Therefore, after the air is purified by the purifier 1, it is directly discharged through the first air port 2→the third air port 6, and pure air is obtained.

[0046] (2) Purified and humidified air mode (for example, Figure 4 ):

[0047] The switching assembly 5 is rotated, so that the second air port 4 is aligned with the fourth air port 7 to form an air outlet, while the first air port 2 and the third air port 6 are misaligned and closed. Therefore, the purified air is guided into the humidifying assembly 3 through the second air port 4→the fourth air port 7, and then discharged after humidification, so that purified and humidified air is obtained.

[0048] As shown in Figure 3 , in addition to the features of the above embodiments, the embodiment further limits that: the switching assembly 5 comprises a ring plate 8, the outer bottom of the ring plate 8 is integrally connected with a first side plate 9, the inner bottom of the ring plate 8 is integrally connected with a second side plate 10, the third air port 6 is uniformly and spacedly arranged in the first side plate 9, and the fourth air port 7 is uniformly and spacedly arranged in the second side plate 10. Through the integrally arranged ring plate 8 and the double side plate structure, the assembly process of the switching assembly 5 is simplified, and the structural strength is improved. The third air port 6 and the fourth air port 7 correspond to the air ducts of the purified air mode and the purified and humidified air mode respectively, and precise air flow direction control is achieved.

[0049] As shown in Figure 3 , in addition to the features of the above embodiments, the embodiment further limits that: the ring plate 8 is fixedly connected with a tab 11 at one end of the outer side wall top, and the end of the tab 11 is provided in a rounded corner. The tab 11 provides an operating handle for the user, and the rounded corner design avoids scratching the fingers of the user during operation, thereby improving the comfort and safety of human-computer interaction.

[0050] By rotating the tab 11, the tab 11 drives the ring plate 8 to rotate, and the ring plate 8 drives the first side plate 9 and the second side plate 10 to rotate, so as to align the first air port 2 with the third air port 6 or align the second air port 4 with the fourth air port 7.

[0051] As shown in Figure 3As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further limited in that: the ring plate 8 is fixedly connected with a grid 12 at the center. The grid 12 serves as an air outlet in the purification and humidification mode, is used to support a wet curtain 15 and uniformly disperse airflow, and ensures that air can uniformly pass through the wet curtain 15 in the purification and humidification mode, thereby improving the humidification efficiency. The grid 12 also serves as a water inlet of the water tank 14. When the water amount in the water tank 14 is insufficient, water can be directly added to the grid 12 above the grid 12, so as to supplement the water amount in the water tank 14. When the water tank 14 is full, the water will flow out of the through pipe 16, and the water adding can be stopped, without affecting the normal use.

[0052] As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further limited in that: the first air outlet 2 and the third air outlet 6 are consistent in size and shape, and the second air outlet 4 and the fourth air outlet 7 are consistent in size and shape. The consistency of the sizes and shapes of the air outlets ensures that the air ducts can be completely aligned or misaligned when the modes are switched, and the area of the air outlet can be maximized, so as to avoid air leakage or airflow turbulence, improve the sealing performance and purification efficiency. Figure 3 As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further limited in that: the first air outlet 2 and the third air outlet 6 are consistent in size and shape, and the second air outlet 4 and the fourth air outlet 7 are consistent in size and shape. The consistency of the sizes and shapes of the air outlets ensures that the air ducts can be completely aligned or misaligned when the modes are switched, and the area of the air outlet can be maximized, so as to avoid air leakage or airflow turbulence, improve the sealing performance and purification efficiency.

[0053] Figure 2 As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further limited in that: the first air outlet 2 and the third air outlet 6 are consistent in size and shape, and the second air outlet 4 and the fourth air outlet 7 are consistent in size and shape. The consistency of the sizes and shapes of the air outlets ensures that the air ducts can be completely aligned or misaligned when the modes are switched, and the area of the air outlet can be maximized, so as to avoid air leakage or airflow turbulence, improve the sealing performance and purification efficiency.

[0054] As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further limited in that: the first air outlet 2 and the third air outlet 6 are consistent in size and shape, and the second air outlet 4 and the fourth air outlet 7 are consistent in size and shape. The consistency of the sizes and shapes of the air outlets ensures that the air ducts can be completely aligned or misaligned when the modes are switched, and the area of the air outlet can be maximized, so as to avoid air leakage or airflow turbulence, improve the sealing performance and purification efficiency. Figure 2 As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further limited in that: the first air outlet 2 and the third air outlet 6 are consistent in size and shape, and the second air outlet 4 and the fourth air outlet 7 are consistent in size and shape. The consistency of the sizes and shapes of the air outlets ensures that the air ducts can be completely aligned or misaligned when the modes are switched, and the area of the air outlet can be maximized, so as to avoid air leakage or airflow turbulence, improve the sealing performance and purification efficiency.

[0055] Figure 2 ​​As shown, in addition to the features of the above embodiments, the present embodiment is further defined as: the water tank 14 is integrally connected with a through pipe 16 on the outer side wall, the through pipe 16 penetrates through and protrudes from the outer side wall of the purifier 1, and the top plane of the through pipe 16 is flush with the bottom plane of the second air inlet 4. The through pipe 16 is used to flow water outside when the water tank is full, ensuring that the water level does not reach the height of the second air inlet 4, avoiding water overflowing from the second air inlet 4 into the purifier 1, and the protruding design also avoids water remaining along the outer side wall, avoiding water flowing into the purifier 1 from the air inlet, thereby preventing the purifier 1 from being affected by water inflow and affecting equipment operation.

[0056] As shown in the drawings, Figure 3 As shown, in addition to the features of the above embodiments, the present embodiment is further defined as: the top plate 17 is fixedly connected between the top of the purifier 1 and the top of the water tank 14, the top plate 17 is adapted to the ring plate 8, and the top plate 17 is abutted to the bottom of the ring plate 8; the purifier 1 outer side wall outside the first air inlet 2 is provided with a limiting groove 19, the first side plate 9 inner side wall is abutted to the purifier 1 outer side wall, and the bottom of the first side plate 9 is abutted to the limiting groove 19, and the second side plate 10 inner side wall is abutted to the water tank 14 inner side wall. The top plate 17 is used to fix the switching assembly 5 and ensure the sealing of the top of the purifier 1; the limiting groove 19 is used to accurately position the first side plate 9, preventing the switching assembly 5 from shifting during assembly; the abutted design ensures the air duct sealing, reducing air leakage.

[0057] During assembly, the integrally designed switching assembly 5 is only needed to be aligned with the limiting groove 19 and clamped on the top of the purifier 1, so that convenient installation can be realized, and disassembly, cleaning or replacement is also facilitated.

[0058] As shown in the drawings, Figures 4-5 As shown, in addition to the features of the above embodiments, the present embodiment is further defined as: the purifier 1 is provided with a transparent window 18 on the side wall and the side wall of the water tank 14 corresponding thereto. The transparent window 18 facilitates users to observe the state of the wet curtain 15 and the water level of the water tank 14, timely maintain or replace the wet curtain 15, and timely increase the water amount of the water tank 14, avoiding affecting equipment performance due to wet curtain 15 pollution or insufficient water level.

[0059] As shown in the drawings, Figure 6As shown, in addition to the features of the above embodiments, the embodiment is further limited: the first limiting block 20 and the second limiting block 21 are fixedly installed on the outer side wall of the purifier 1 below the limiting groove 19, the limiting plate 22 is fixedly installed on the outer side wall of the first side plate 9 above the first limiting block 20 and the second limiting block 21, the bottom of the limiting plate 22 extends to between the first limiting block 20 and the second limiting block 21, and is attached to the opposite inner side of the first limiting block 20 or the second limiting block 21, when the limiting plate 22 is attached to the first limiting block 20, the distance between the end face of the limiting plate 22 away from the first limiting block 20 and the inner side face of the second limiting block 21 is equal to the center distance when the first air port 2 is misaligned with the third air port 6; when switching to the purification and humidification mode, the knob 11 is actuated, the first side plate 9 is rotated, the limiting plate 22 is attached to the first limiting block 20, at this time the first air port 2 is just misaligned with the third air port 6, and the second air port 4 is aligned with the fourth air port 7; when switching to the pure purification mode, the knob 11 is actuated in reverse, the first side plate 9 is rotated in reverse, the limiting plate 22 is attached to the second limiting block 21, at this time the first air port 2 is just aligned with the third air port 6, and the second air port 4 is misaligned with the fourth air port 7; therefore, the embodiment can produce tactile feedback, ensure accurate alignment of the air port, and realize accurate switching of the mode.

[0060] The technical features of the above embodiments can be combined in any manner, and to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0061] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A purification humidifier with a dual passage air duct switching device, characterized in that, Include: The purifier (1), the first air port (2) is opened in the top of the side wall circumference; Humidification assembly (3), the humidification assembly (3) is arranged in the top of the purifier (1), the second air port (4) is opened in the top of the side wall circumference of the humidification assembly (3); Switching assembly (5), the switching assembly (5) is rotatably connected to the top of the purifier (1), the switching assembly (5) includes a plurality of third air port (6) and fourth air port (7) which are opened in circumference; The first air port (2) is matched with the third air port (6), the second air port (4) is matched with the fourth air port (7); When the first air port (2) is aligned with the third air port (6), the second air port (4) is misaligned with the fourth air port (7); When the second air port (4) is aligned with the fourth air port (7), the first air port (2) is misaligned with the third air port (6).

2. The purification humidifier with dual passage air duct switching device according to claim 1, characterized in that, The switching assembly (5) includes a ring plate (8), the first side plate (9) is integrally connected to the outer bottom of the ring plate (8), the second side plate (10) is integrally connected to the inner bottom of the ring plate (8), the third air port (6) is evenly arranged in the first side plate (9), and the fourth air port (7) is evenly arranged in the second side plate (10).

3. The purification humidifier with dual passage air duct switching device according to claim 2, characterized in that, The outer side wall of one end of the ring plate (8) is fixedly connected with a tab (11), and the end of the tab (11) is provided in an inverted round corner.

4. The purification humidifier with dual passage air duct switching device according to claim 3, characterized in that, The center of the ring plate (8) is fixedly connected with a grille (12).

5. The purification humidifier with dual passage air duct switching device according to claim 1, characterized in that, The size and shape of the first air port (2) and the third air port (6) are consistent, and the size and shape of the second air port (4) and the fourth air port (7) are consistent.

6. The purification humidifier with dual passage air duct switching device according to claim 1, characterized in that, The outer side wall of the humidification assembly (3) and the inner side wall of the purifier (1) form an air outlet channel (13), and the air outlet channel (13) is in air connection with the first air port (2) and the second air port (4).

7. The purification humidifier with dual passage air duct switching device according to claim 4, characterized in that, The humidification assembly (3) includes a water tank (14), the wet curtain (15) is placed in the inside of the water tank (14), the outer ring area of the wet curtain (15) is greater than or equal to the area of the grille (12), and the top of the wet curtain (15) abuts against the bottom of the grille (12).

8. The purification humidifier with dual passage air duct switching device according to claim 7, characterized in that, The outer side wall of the water tank (14) is integrally connected with a through pipe (16), the through pipe (16) penetrates and protrudes from the outer side wall of the purifier (1), and the top plane of the through pipe (16) is flush with the bottom plane of the second air port (4).

9. The purification humidifier with dual passage air duct switching device according to claim 8, characterized in that, The top plate (17) is matched with the ring plate (8), and the top plate (17) is abutted to the bottom of the ring plate (8); the outer side wall of the purifier (1) on the outer side of the first air port (2) is provided with a limiting groove (19), the inner side wall of the first side plate (9) is abutted to the outer side wall of the purifier (1), and the bottom of the first side plate (9) is abutted to the limiting groove (19), and the inner side wall of the second side plate (10) is abutted to the inner side wall of the water tank (14).

10. The purification humidifier with dual passage air duct switching device according to claim 7, characterized in that, The side wall of the purifier (1) and the side wall of the water tank (14) corresponding to the position are provided with transparent windows (18).

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