Air outlet and ventilation intensity adjusting structure and bathroom heater

Abstract

The application provides an air outlet and ventilation intensity adjusting structure and a bathroom heater, and relates to the technical field of bathroom heaters. A rotating assembly and a driving motor for driving the rotating assembly to rotate are provided, a baffle for blocking the air duct is arranged on the rotating assembly, and the adjusting mechanism is arranged at the intersection of the air duct. The air outlet and ventilation air ducts are arranged between the left assembly and the right assembly, and the air outlet and ventilation intensity adjusting structure is arranged at the intersection of the air inlet duct and the air outlet and ventilation air ducts. Compared with the prior art, the application has the following technical advantages: the air outlet and ventilation intensity adjusting structure adjusts the intensity of the air outlet and ventilation by adjusting the angle of the air duct baffle and changing the opening degree of the air outlet and ventilation air ducts; the air outlet and ventilation intensity adjusting structure is additionally arranged in the bathroom heater, the air intensity adjusting mode is increased, the adjusting mode is more flexible, the angle adjustment of the air duct baffle is combined with the left and right air wheel assemblies, and the intensity adjusting range of the air outlet and ventilation of the bathroom heater is expanded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bathroom heater, in particular to air outlet and ventilation intensity adjusting structure and bathroom heater. BACKGROUND

[0002] Bathroom heater is a bathroom small household electrical appliance product which combines the functions of heating and air exchange in bathroom. Bathroom heater is usually installed in bathroom for use. The existing bathroom heater usually adopts double motor combination to realize air outlet and ventilation functions, and the intensity adjustment of air outlet and ventilation is usually realized by adjusting the motor speed, so the adjustment mode is relatively single and the adjustment range is relatively small, which cannot meet the diversified needs of users for the intensity of air outlet and ventilation of bathroom heater. SUMMARY

[0003] The present application provides air outlet and ventilation intensity adjusting structure, which is applied to bathroom heater, and realizes the intensity control of air outlet and ventilation of bathroom heater by angle adjustment of air duct baffle and cooperation of left and right air wheel assemblies, which is more flexible and has wider adjustment range.

[0004] The specific technical scheme is air outlet and ventilation intensity adjusting structure, which comprises: a rotating assembly and a driving motor for driving the rotating assembly to rotate, a baffle for blocking the air duct is arranged on the rotating assembly, and the adjusting structure is located at the intersection of the air duct.

[0005] Preferably, the adjusting structure comprises: an upper adjusting mechanism and a lower adjusting mechanism, and the upper adjusting mechanism and the lower adjusting mechanism are coaxially installed.

[0006] Preferably, in the upper adjusting mechanism, an upper motor is installed at the end of the upper assembly rotating shaft, and an upper baffle is fixedly installed on the upper assembly; in the lower adjusting mechanism, a lower motor is installed at the end of the lower assembly rotating shaft, and a lower baffle is fixedly installed on the lower assembly; and the upper assembly and the lower assembly are coaxially connected through a cylindrical pin.

[0007] Preferably, the rotating assembly is provided with two symmetrically arranged baffles.

[0008] Preferably, the rotating assembly is provided with a plate-shaped middle rib position, and the middle rib position is located at the middle position of the two baffles.

[0009] The bath heater comprises a main body, a wind wheel assembly and a wind channel volute are installed in the main body, a ventilation opening is arranged on the side of the main body, an air inlet and an air outlet are arranged on the upper part of the main body, a bath heater air inlet channel, an air outlet channel and a ventilation channel are formed in the bath heater, the bath heater air inlet channel is communicated with the air inlet, the air outlet channel is communicated with the air outlet, and the ventilation channel is communicated with the ventilation opening, the wind wheel assembly comprises a left assembly and a right assembly, the left assembly and the right assembly are symmetrically arranged on the left side and the right side of the main body, the air outlet channel and the ventilation channel are located between the left assembly and the right assembly, and the bath heater further comprises an air outlet and ventilation intensity adjusting structure, which is located at the intersection of the bath heater air inlet channel and the air outlet channel and the ventilation channel.

[0010] Preferably, the air outlet and ventilation intensity adjusting structure is as described above.

[0011] Preferably, the ventilation channel is provided with ventilation ribs.

[0012] Preferably, the air outlet is located above the ventilation opening, and the axis of the ventilation opening is a symmetric axis of the symmetric distribution of the left assembly and the right assembly.

[0013] Compared with the prior art, the present application has the following technical advantages:

[0014] 1. The air outlet and ventilation intensity adjusting structure adjusts the intensity of air outlet and ventilation by adjusting the opening degree of the air outlet channel and the ventilation channel through the angle of the wind channel baffle, and the structure is simple and the adjustment is flexible.

[0015] 2. The air outlet and ventilation intensity adjusting structure is additionally arranged in the bath heater, the air intensity adjusting mode is increased, the adjustment mode is more flexible, the angle adjustment of the wind channel baffle is combined with the left and right wind wheel assemblies, the intensity adjustment range of the air outlet and ventilation of the bath heater is expanded, and the diversified needs of users for the air outlet and ventilation intensity of the bath heater are better met. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings and their descriptions are used to explain the present application and are not intended to limit the present application. In the drawings:

[0017] Figure 1 is a schematic view of the air outlet and ventilation intensity adjusting structure in embodiment 1,

[0018] Figure 2 is a front view of the bath heater in embodiment 1,

[0019] Figure 3 is Figure 2 a sectional view at A-A in embodiment 1,

[0020] Figure 4 is Figure 2 a sectional view at B-B in embodiment 1,

[0021] Figure 5 is a schematic diagram of a bath heater with single motor air outlet and single motor air exchange in Example 1,

[0022] Figure 6 is a schematic diagram of a bath heater with double motor air outlet or air exchange in Example 1,

[0023] Figure 7 is a schematic diagram of a bath heater with single motor air outlet and air exchange in Example 1,

[0024] Figure 8 is a schematic diagram of a bath heater with double motor air outlet and air exchange in Example 1,

[0025] Figure 9 is a schematic diagram of air outlet and air exchange intensity adjustment structure in Example 3,

[0026] Figure 10 is a schematic diagram of bath heater interior in different air outlet states in Example 3,

[0027] Figure 11 is a schematic diagram of bath heater interior in different air exchange states in Example 3,

[0028] Figure 12 is a schematic diagram of bath heater interior in air outlet and air exchange common state in Example 3, wherein:

[0029] 1, main machine, 4, cylindrical pin, 5, air exchange rib position,

[0030] 11, air wheel assembly, 12, air duct volute, 13, air exchange port, 14, air inlet, 15, air outlet, 111, left assembly, 112, right assembly,

[0031] 31, rotating assembly, 32, driving motor, 33, upper adjustment mechanism, 34, lower adjustment mechanism, 311, baffle, 312, middle rib position, 331, upper assembly, 332, upper motor, 333, upper baffle, 341, lower assembly, 342, lower motor, 343, lower baffle,

[0032] Note: Figures 5-8 and Figures 10-12 the arrows in the middle indicate the direction of air flow. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with embodiments and drawings. Herein, the illustrative embodiments of the present application and their descriptions are used to explain the present application, but not as a limitation of the present application.

[0034] In the description of the present application, it should be noted that the terms "inner", "outer", "left", "right" are indicative of the orientation or positional relationship based on the position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] The air outlet and ventilation intensity adjusting structure comprises a rotating assembly 31 and a driving motor 32 for driving the rotating assembly 31 to rotate, and a baffle 311 is arranged on the rotating assembly 31 for blocking the air duct. The adjusting structure is located at the intersection of the air duct. Working principle: the air outlet and ventilation intensity adjusting structure can change the opening degree of the air outlet duct and the ventilation duct by adjusting the angle of the baffle 311, thereby adjusting the intensity of air outlet and ventilation. The structure is simple and flexible to adjust.

[0036] In one embodiment, the adjusting structure comprises an upper adjusting mechanism 33 and a lower adjusting mechanism 34, which are coaxially installed. The two adjusting mechanisms can operate independently and do not interfere with each other. The baffle 311 for adjustment can appear in a variety of angle combinations, realizing the switching of multiple air outlet and ventilation modes and increasing the flexibility of adjustment.

[0037] In one embodiment, in the upper adjusting mechanism 33, an upper motor 332 is installed at the end of the rotating shaft of an upper assembly 331, and an upper baffle 333 is fixedly installed on the upper assembly 331. In the lower adjusting mechanism 34, a lower motor 342 is installed at the end of the rotating shaft of a lower assembly 341, and a lower baffle 343 is fixedly installed on the lower assembly 341. The upper assembly 331 and the lower assembly 341 are coaxially connected through a cylindrical pin 4. Different air outlet and ventilation modes have different air outlet intensities and ventilation intensities. The independently operated upper adjusting mechanism 33 and lower adjusting mechanism 34 are more flexible and diverse in adjusting the air outlet intensity and ventilation intensity.

[0038] In one embodiment, the rotating assembly 31 is provided with two symmetrically arranged baffles 311. This is the design structure of the rotating assembly 31 when only one adjusting mechanism is provided.

[0039] In one embodiment, a plate-shaped middle rib 312 is arranged on the rotating assembly 31. The middle rib 312 is located at the middle position of the two baffles 311. The middle rib 312 plays a role in blocking the air flow and ventilation flow.

[0040] The bath heater comprises a main body 1, a wind wheel assembly 11 and a wind channel volute 12 are installed in the main body 1, a ventilation opening 13 is arranged on the side of the main body 1, an air inlet 14 and an air outlet 15 are arranged on the upper part of the main body 1, a bath heater air inlet channel, an air outlet channel and a ventilation channel are formed in the bath heater, the bath heater air inlet channel is communicated with the air inlet 14, the air outlet channel is communicated with the air outlet 15, and the ventilation channel is communicated with the ventilation opening 13, the wind wheel assembly 11 comprises a left assembly 111 and a right assembly 112, the left assembly 111 and the right assembly 112 are symmetrically arranged on the left and right sides of the main body 1, the air outlet channel and the ventilation channel are located between the left assembly 111 and the right assembly 112, and the bath heater further comprises an air outlet and ventilation intensity adjusting structure as described above, and the air outlet and ventilation intensity adjusting structure is located at the intersection of the bath heater air inlet channel, the air outlet channel and the ventilation channel.

[0041] The air outlet and ventilation intensity adjusting structure is arranged in the bath heater, the air intensity adjusting mode is increased, the adjusting mode is more flexible, the angle of the air channel baffle is adjusted, the left and right wind wheel assemblies are matched, the air outlet and ventilation intensity adjusting range of the bath heater is expanded, and the diversified requirements of users on the air outlet and ventilation intensity of the bath heater are better met.

[0042] In an embodiment, the ventilation channel is provided with ventilation ribs 5.

[0043] In an embodiment, the air outlet 14 is located above the ventilation opening 13, and the axis of the ventilation opening 13 is a symmetric axis of the symmetric distribution of the left assembly 111 and the right assembly 112.

[0044] Embodiment 1: The air outlet and ventilation intensity adjusting structure comprises an upper adjusting mechanism 33 and a lower adjusting mechanism 34, the upper adjusting mechanism 33 and the lower adjusting mechanism 34 are coaxially installed, in the upper adjusting mechanism 33, an upper assembly 331 is provided with an upper motor 332 for driving the rotation of the upper assembly 331, and an upper baffle 333 for blocking the air channel is fixedly arranged on the upper assembly 331, in the lower adjusting mechanism 34, a lower assembly 341 is provided with a lower motor 342 for driving the rotation of the lower assembly 341, and a lower baffle 343 for blocking the air channel is fixedly arranged on the lower assembly 341, the upper assembly 331 and the lower assembly 341 are coaxially connected through a cylindrical pin 4, the upper adjusting mechanism 33 and the lower adjusting mechanism 34 are independently operated while supporting each other, and the structural stability is improved. The adjusting mechanism is located at the intersection of the air channel.

[0045] Working principle: the air outlet and ventilation intensity adjusting structure can change the opening degree of the air outlet and ventilation air duct by adjusting the angle of the baffle 311, thereby adjusting the intensity of air outlet and ventilation, and the structure is simple and flexible. The two adjusting mechanisms can operate independently without interference, and the upper baffle 333 and the lower baffle 343 used for adjustment can appear in various angle combinations to realize switching of various air outlet and ventilation modes. Different air outlet and ventilation modes have different air outlet intensity and ventilation intensity, and the independently operated upper adjusting mechanism 33 and lower adjusting mechanism 34 are more flexible and diverse for adjusting the air outlet intensity and ventilation intensity.

[0046] The existing bath heater adopts a double-motor combination to realize air outlet and ventilation functions, and the intensity adjustment of air outlet and ventilation is mainly realized by adjusting the motor speed, the adjustment mode is relatively single, the ventilation intensity adjustment range is relatively small, and the diversified needs of users for the air outlet and ventilation intensity of the bath heater cannot be met. Therefore, the upgrading design is performed, and the air outlet and ventilation intensity adjusting structure in the embodiment is added to the bath heater.

[0047] The bath heater comprises a main machine 1, a wind wheel assembly 11 and a wind duct volute 12 are installed in the main machine 1, a ventilation port 13 is arranged on the side of the main machine 1, an air inlet port 14 and an air outlet port 15 are arranged on the upper portion of the main machine 1, a bath heater air inlet duct, an air outlet collecting duct and a ventilation collecting duct are formed in the bath heater, the bath heater air inlet duct is in communication with the air inlet port 14, the air outlet collecting duct is in communication with the air outlet port 15, and the ventilation collecting duct is in communication with the ventilation port 13, the wind wheel assembly 11 comprises a left assembly 111 and a right assembly 112, the left assembly 111 and the right assembly 112 are symmetrically arranged on the left and right sides of the main machine 1, and the air outlet collecting duct and the ventilation collecting duct are located in the middle of the left assembly 111 and the right assembly 112. The air outlet and ventilation intensity adjusting structure in the embodiment is installed at the intersection of the bath heater air inlet duct and the air outlet collecting duct and the ventilation collecting duct. In addition, a complete bath heater further comprises a panel, the panel is located above the main machine 1, and the panel is generally provided with an air inlet and outlet port and a display screen. The technical scheme of the present application mainly focuses on the main machine 1, and the panel is designed to be adapted.

[0048] Working principle: the steering and speed of the fixed wind wheel assembly 11 are fixed, when the opening degree of the air outlet and ventilation air duct changes, the air outlet intensity and ventilation intensity also change. Generally, the air outlet intensity becomes weaker with the increase of the air outlet duct opening degree, and the ventilation intensity also becomes weaker with the increase of the ventilation air duct opening degree. The air outlet and ventilation intensity adjusting structure is added to the bath heater, on the one hand, the air intensity adjusting mode is increased, and on the other hand, the angle adjustment of the air duct baffle in cooperation with the left and right wind wheel assemblies expands the air outlet and ventilation intensity adjustment range of the bath heater. The two adjusting mechanisms can operate independently, the adjusting mode is more flexible, and the diversified needs of users for the air outlet and ventilation intensity of the bath heater are better met. Figure 5In the embodiment, 5a and 5b are both single-motor air-out and air-exchange working modes, the upper adjusting mechanism 33 and the lower adjusting mechanism 34 separate the air-exchange air-collector and the air-out air-collector, the air-out air flow and the air-exchange air flow are not mixed, and the air-out and the air-exchange do not interfere with each other, which is the working mode that the single adjusting mechanism does not have. Figure 6 In the embodiment, 6a is a double-motor air-out working mode, the baffle 311 completely separates the air-exchange air-collector, in this state, the air-out air flow only flows to the air-out air-collector; 6b is a double-motor air-exchange working mode, the baffle 311 completely separates the air-out air-collector, in this state, the air-exchange air flow only flows to the air-exchange air-collector. Figure 7 In the embodiment, 7a and 7b are both single-motor air-out and air-exchange working modes, only the single-side air-wheel assembly 11 operates, and the air-collector adjusting mechanism 3 separates the air-in air flow. Figure 8 In the embodiment, the double-motor air-out mode is used for micro air-exchange, the two adjusting mechanisms can independently operate and do not interfere with each other, and the air-out intensity and the air-exchange intensity are more flexible and diverse, which is reflected in Figure 5 、 Figure 7 and Figure 8 In the working modes shown in the embodiments, in Figure 7 and Figure 8 In the working modes shown in the embodiments, the air flow separated by the air-collector adjusting mechanism, the air-out opening degree and the air-exchange opening degree are also adjustable according to the air-out intensity and the air-exchange intensity.

[0049] In another embodiment, the air-exchange rib 5 is arranged in the air-exchange air-collector of the bathroom heater, the air-exchange air-collector is divided into two parts, and the interference of the left assembly 111 and the right assembly 112 during air-exchange is reduced.

[0050] In another embodiment, the air-out port 14 of the bathroom heater is located above the air-exchange port 13, and the axis of the air-exchange port 13 is the symmetric axis of the symmetric distribution of the left assembly 111 and the right assembly 112.

[0051] Embodiment 2: Different from the embodiment 1, only one adjusting mechanism is arranged, the rotating assembly 31 is provided with a driving motor 32 arranged at the end of the rotating shaft of the rotating assembly 31 and used for driving the rotating assembly 31 to rotate, the rotating assembly 31 is provided with two symmetric baffles 311 used for blocking the air-collector, and the adjusting mechanism is located at the intersection of the air-collector. The air-out intensity and the air-exchange intensity adjusting structure can change the opening degree of the air-out air-collector and the air-exchange air-collector by adjusting the angle of the baffle 311, so as to adjust the air-out intensity and the air-exchange intensity, and the structure is simple and the adjustment is flexible.

[0052] The bath heater comprises a main body 1, a wind wheel assembly 11 and a wind channel volute 12 are installed in the main body 1, the side of the main body 1 is provided with an air exchange opening 13, the upper part of the main body 1 is provided with an air inlet 14 and an air outlet 15, a bath heater air inlet channel, an air outlet channel and an air exchange channel are formed in the bath heater, the bath heater air inlet channel is communicated with the air inlet 14, the air outlet channel is communicated with the air outlet 15, and the air exchange channel is communicated with the air exchange opening 13, the wind wheel assembly 11 comprises a left assembly 111 and a right assembly 112, the left assembly 111 and the right assembly 112 are symmetrically distributed on the left and right sides of the main body 1, and the air outlet channel and the air exchange channel are located between the left assembly 111 and the right assembly 112, and the air outlet and air exchange intensity adjusting structure in the embodiment is installed at the intersection of the bath heater air inlet channel, the air outlet channel and the air exchange channel.

[0053] In the embodiment 3, a plate-shaped middle rib 312 is arranged on the rotating assembly 31, and the middle rib 312 is located at the middle position of the two baffles 311. The arrangement of the middle rib 312 can reduce the mutual influence of the left assembly 111 and the right assembly 112 during air outlet and air exchange.

[0054] The bath heater comprises a main body 1, a wind wheel assembly 11 and a wind channel volute 12 are installed in the main body 1, the side of the main body 1 is provided with an air exchange opening 13, the upper part of the main body 1 is provided with an air inlet 14 and an air outlet 15, a bath heater air inlet channel, an air outlet channel and an air exchange channel are formed in the bath heater, the bath heater air inlet channel is communicated with the air inlet 14, the air outlet channel is communicated with the air outlet 15, and the air exchange channel is communicated with the air exchange opening 13, the wind wheel assembly 11 comprises a left assembly 111 and a right assembly 112, the left assembly 111 and the right assembly 112 are symmetrically distributed on the left and right sides of the main body 1, and the air outlet channel and the air exchange channel are located between the left assembly 111 and the right assembly 112, and the air outlet and air exchange intensity adjusting structure in the embodiment is installed at the intersection of the bath heater air inlet channel, the air outlet channel and the air exchange channel. In Figure 10 In the embodiment 3, a plate-shaped middle rib 312 is arranged on the rotating assembly 31, and the middle rib 312 is located at the middle position of the two baffles 311. The arrangement of the middle rib 312 can reduce the mutual influence of the left assembly 111 and the right assembly 112 during air outlet and air exchange. Figure 11 In the embodiment 3, a plate-shaped middle rib 312 is arranged on the rotating assembly 31, and the middle rib 312 is located at the middle position of the two baffles 311. The arrangement of the middle rib 312 can reduce the mutual influence of the left assembly 111 and the right assembly 112 during air outlet and air exchange. Figure 12 In the embodiment 3, a plate-shaped middle rib 312 is arranged on the rotating assembly 31, and the middle rib 312 is located at the middle position of the two baffles 311. The arrangement of the middle rib 312 can reduce the mutual influence of the left assembly 111 and the right assembly 112 during air outlet and air exchange.

[0055] In the embodiment 4, the air outlet 14 is located above the air exchange opening 13, and the axis of the air exchange opening 13 is a symmetric axis of the symmetric distribution of the left assembly 111 and the right assembly 112. The lower shell of the main body 1 is designed to be convex at the axis of the air exchange opening 13, so as to ensure the effective air outlet channel of the air exchange opening 13.

[0056] The above merely describes the preferred embodiments of the present application, but is not intended to limit the present application in other forms. Any person skilled in the art can make changes or modifications to the equivalent embodiments with the disclosed technical contents. However, any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution of the present application and according to the technical essence of the present application still falls within the protection scope of the present application.

Claims

1. A bath heater, comprising a main machine (1), a wind wheel assembly (11) and a wind channel volute (12) are installed in the main machine (1), a ventilation port (13) is arranged on the side of the main machine (1), an air inlet (14) and an air outlet (15) are arranged on the upper part of the main machine (1), a bath heater air inlet channel, an air outlet channel and a ventilation channel are formed in the bath heater, the bath heater air inlet channel is communicated with the air inlet (14), the air outlet channel is communicated with the air outlet (15), and the ventilation channel is communicated with the ventilation port (13), characterized in that, the wind wheel assembly (11) comprises: a left assembly (111) and a right assembly (112), the left assembly (111) and the right assembly (112) are symmetrically distributed on the left and right sides of the main machine (1), and the air outlet channel and the ventilation channel are located in the middle of the left assembly (111) and the right assembly (112). Further comprising: an air outlet and ventilation intensity adjusting structure, the air outlet and ventilation intensity adjusting structure is located at the intersection of the bath heater air inlet channel and the air outlet channel and the ventilation channel; the air outlet and ventilation intensity adjusting structure comprises: an upper adjusting mechanism (33) and a lower adjusting mechanism (34), and the upper adjusting mechanism (33) and the lower adjusting mechanism (34) are coaxially installed; in the upper adjusting mechanism (33), an upper motor (332) is installed at the shaft end of an upper assembly (331), an upper baffle (333) is fixedly installed on the upper assembly (331), in the lower adjusting mechanism (34), a lower motor (342) is installed at the shaft end of a lower assembly (341), and a lower baffle (343) is fixedly installed on the lower assembly (341), the upper assembly (331) and the lower assembly (341) are coaxially connected through a cylindrical pin (4); a ventilation rib (5) is arranged in the ventilation channel, the ventilation rib (5) divides the ventilation channel into two parts, thereby reducing the interference of the left assembly (111) and the right assembly (112) on each other during ventilation; the air outlet (15) is located above the ventilation port (13), and the axis of the ventilation port (13) is a symmetric axis of the symmetric distribution of the left assembly (111) and the right assembly (112).

2. A bath heater, comprising a main machine (1), a wind wheel assembly (11) and a wind channel volute (12) are installed in the main machine (1), a ventilation port (13) is arranged on the side of the main machine (1), an air inlet (14) and an air outlet (15) are arranged on the upper part of the main machine (1), a bath heater air inlet channel, an air outlet channel and a ventilation channel are formed in the bath heater, the bath heater air inlet channel is communicated with the air inlet (14), the air outlet channel is communicated with the air outlet (15), and the ventilation channel is communicated with the ventilation port (13), characterized in that, the wind wheel assembly (11) comprises: a left assembly (111) and a right assembly (112), the left assembly (111) and the right assembly (112) are symmetrically distributed on the left and right sides of the main machine (1), and the air outlet channel and the ventilation channel are located in the middle of the left assembly (111) and the right assembly (112), The application further comprises: an air outlet and ventilation intensity adjusting structure, which is located at the intersection of the shower heater air inlet channel and the air outlet and ventilation air collection channels; the air outlet and ventilation intensity adjusting structure comprises: a rotating assembly (31) and a driving motor (32) for driving the rotating assembly (31) to rotate, the rotating assembly (31) is provided with two symmetrically arranged baffles (311) for blocking the air channel, the rotating assembly (31) is provided with a plate-shaped middle rib position (312), the middle rib position (312) is located at the middle position of the two baffles (311), in the state that the two baffles (311) completely block the ventilation air collection channel, the middle rib position (312) is arranged to extend towards the air outlet (15), the air outlet (15) is located above the ventilation port (13), and the axis of the ventilation port (13) is a symmetric axis on which the left assembly (111) and the right assembly (112) are symmetrically distributed.

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