Air handling unit and air conditioner

Abstract

The present invention discloses an air handling device and an air conditioner. The air handling device includes: a housing, a first air duct, a second air duct, a first impeller, a second impeller, an air inlet, an air outlet, and an air outlet damper. The present invention makes full use of the space below the first impeller, arranges a second impeller in parallel therewith, and provides a first air duct for accommodating the first impeller and a second air duct for accommodating the second impeller. When high-power air supply is required, the two impellers can operate simultaneously, and compared with the existing air handling equipment with a single impeller, the air volume is larger. When low-power air supply is required, it can be achieved by controlling the operation of one of the impellers.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, and particularly to an air handling device and an air conditioner. Background Art

[0002] Currently, air conditioners do not have an exhaust function. The fresh air is realized by a centrifugal impeller, which continuously sends fresh air from the outdoor side to the indoor side through a fresh air duct. At present, the maximum fresh air volume of the fresh air air conditioners on the market is basically about 60 m³. How to further increase the fresh air volume, add an exhaust function and a health function is an urgent problem to be solved at present. Summary of the Invention

[0003] The main object of the present invention is to provide an air handling device, aiming to solve the problem of small air volume of the air handling device in the prior art.

[0004] To achieve the above object, the present invention provides an air handling device, comprising:

[0005] A housing having an air inlet, an air outlet, a first air duct connecting the air inlet and the air outlet, and a second air duct connecting the air inlet and the air outlet, wherein the first air duct and the second air duct are independently arranged;

[0006] A first impeller and a second impeller respectively arranged in the first air duct and the second air duct, and used for sucking indoor air from the air inlet and discharging it from the air outlet; the first impeller is located above the second impeller;

[0007] An air outlet damper installed on the housing for opening and closing the air outlet.

[0008] In one embodiment, the diameter of the first impeller is larger than that of the second impeller.

[0009] In one embodiment, both the first impeller and the second impeller are centrifugal impellers, and the central axes of the first impeller and the second impeller extend in the same direction; the first air duct has an extension section extending downward, and the extension section shares the same air duct plate with the second air duct.

[0010] In one embodiment, the extension section includes an inner air duct plate and an outer air duct plate arranged oppositely, the extension section shares the inner air duct plate with the second air duct, and the perpendicular line passing through the axis of the first impeller is closer to the outer air duct plate than the perpendicular line passing through the axis of the second impeller.

[0011] In one embodiment, the air duct plate extends downward at the air outlet and divides the air outlet into a first outlet corresponding to the first air duct and a second outlet corresponding to the second air duct.

[0012] In one embodiment, the air handling device further includes a mounting plate disposed inside the housing, and a volute disposed on the mounting plate; the volute and the mounting plate define the first air duct and the second air duct, and the mounting plate is provided with a first inlet corresponding to the first air duct and a second inlet corresponding to the second air duct.

[0013] In one embodiment, a main air duct communicating with the air inlet is formed inside the housing, and the main air duct communicates with the first air duct and the second air duct; a fresh air duct communicating with the outside and the main air duct is further formed inside the housing;

[0014] The air handling device further includes a first air damper for opening or blocking the fresh air duct and the main air duct.

[0015] In one embodiment, an exhaust air duct communicating with the first air duct and the second air duct is formed inside the housing, and the air handling device further includes a second air damper for opening or blocking the fresh air duct and the main air duct.

[0016] In one embodiment, the first air damper includes a rotating cylinder provided with a side opening, and the second air damper is disposed at the lower end of the rotating cylinder; when the opening faces the main air duct, the fresh air duct communicates with the main air duct; at the same time, the fresh air duct is blocked from the exhaust air duct.

[0017] In one embodiment, a purification component docked with the first air duct and a humidification component docked with the second air duct are further disposed in the main air duct; the air handling device includes a purification mode, in which the first air damper is closed, indoor air enters the main air duct through the air inlet, and sequentially passes through the first air duct and / or the second air duct and is discharged from the air outlet.

[0018] In one embodiment, the air handling device includes an exhaust mode, in which the first air damper and the air outlet damper are closed, the second air damper is opened, air enters the main air duct through the air inlet, passes through the first air duct and / or the second air duct and enters the exhaust air duct, and is discharged from the fresh air duct.

[0019] In one embodiment, the air handling device includes a fresh air mode, in which the first air damper and the air outlet damper are opened, the air inlet and the second air damper are closed, and air enters the main air duct from the fresh air duct, then passes through the first air duct and / or the second air duct and is discharged from the air outlet.

[0020] The present invention also provides an air conditioner including the above air handling device.

[0021] The present invention makes full use of the space below the first wind wheel to arrange a second wind wheel in parallel therewith, and arranges a first air duct for accommodating the first wind wheel and a second air duct for accommodating the second wind wheel. When high-power air supply is required, the two wind wheels can operate simultaneously, and the air volume is larger compared with the existing air treatment equipment with a single wind wheel. When low-power air supply is required, it can be achieved by controlling the operation of one of the wind wheels.

[0022] In addition, according to different user requirements, each air door and the switches of the two wind wheels can be controlled to change the flow direction of the air in the housing. Different combinations of the switch states of the wind wheels and the air doors correspond to different functional modes, thereby realizing the switching of the fresh air function, the exhaust function, the purification function, and the humidification function. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 It is a schematic structural diagram of an embodiment of the air treatment device of the present invention;

[0025] Figure 2 It is Figure 1 a schematic structural diagram of the installation frame in the embodiment;

[0026] Figure 3 It is Figure 1 a schematic structural diagram of the first air duct and the second air duct in the embodiment;

[0027] Figure 4 It is Figure 1 a schematic structural diagram of the volute in the embodiment;

[0028] Figure 5 It is Figure 1 a schematic structural diagram of the fresh air passage in the embodiment;

[0029] Figure 6 It is Figure 1 a side view of the air treatment device in the embodiment;

[0030] Figure 7 It is Figure 6 a wind path diagram of the A-A section of the air treatment device in the purification mode in the embodiment;

[0031] Figure 8 It is Figure 6 a wind direction diagram of the B-B section of the air treatment device in the fresh air mode in the embodiment;

[0032] Figure 9 For Figure 6 The wind direction diagram of the C-C section of the air handling device in the exhaust mode in the embodiment;

[0033] Explanation of the reference numerals in the drawings:

[0034]

[0035] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes solution A, or solution B, or the solution that both A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0039] The present invention provides an air handling device, referring to Figures 1 to 9, the air handling device includes a housing having an air inlet 111, an air outlet 112, a first air duct 151 connecting the air inlet 111 and the air outlet 112, and a second air duct 152 connecting the air inlet 111 and the air outlet 112. The first air duct 151 and the second air duct 152 are independently arranged. In addition, the air handling device further includes a first impeller 210 and a second impeller 220, which are respectively arranged in the first air duct 151 and the second air duct 152. The first impeller 210 and the second impeller 220 are used to suck indoor air from the air inlet 111 and discharge it from the air outlet 112. The first impeller 210 is located above the second impeller 220. The air handling device further includes an air outlet damper, which is installed on the housing and used to open and close the air outlet 112.

[0040] In this embodiment, the housing includes a rectangular parallelepiped-shaped outer shell 110, and the outer shell 110 includes a front panel and a bottom shell. The air inlet 111 is arranged on the front panel, and the air outlet 112 is arranged on the bottom shell. An installation frame 130 is arranged inside the housing. The installation frame 130 includes a vertically arranged installation plate 131, and the installation plate 131 divides the interior of the housing into a front chamber near the front panel and a rear chamber. In this embodiment, the first air duct 151 and the second air duct 152 are arranged in the rear chamber. Specifically, a first inlet 133 and a second inlet 134 are arranged on the installation plate 131, and a volute 150 buckled at the first inlet 133 and the second inlet 134 is arranged on the right side of the installation plate 131. The volute 150 and the installation plate 131 are configured to form a first air duct 151 docked with the first inlet 133 and a second air duct 152 docked with the second inlet 134.

[0041] The two air ducts are separated by an air duct plate 153 and are independent of each other. The first impeller 210 is arranged at the first inlet 133, and the second impeller 220 is arranged at the second inlet 134. The air duct plate 153 on the volute 150 extends downward to form the air outlet 112. The air outlet damper is arranged at the air outlet 112 and is used to control the opening and closing of the air outlet 112. The rotation of the air outlet damper is controlled by a motor or a servo motor to realize the opening and closing of the air outlet 112. When the door body is opened, air is output from the air outlet 112 at the bottom shell.

[0042] Refer to Figure 2, due to the limitation of the overall size of the air handling device, generally only one wind wheel is provided. In the illustrated orientation, the present invention utilizes the space below the first wind wheel 210 to arrange the second wind wheel 220 in parallel therewith. The first wind wheel 210 and the second wind wheel 220 maintain a certain distance, and the distance between their outer contours is controlled within 8 - 100 mm. The two wind wheels are separated by an air duct plate 153, and the air duct plate 153 maintains a certain gap with each wind wheel to form an air flow passage. When high-power air supply is required, the two wind wheels can operate simultaneously, and compared with the existing air handling equipment with a single wind wheel, the air volume is larger. When low-power air supply is required, it can be achieved by controlling the operation of one of the wind wheels.

[0043] In addition, for different user requirements, the opening and closing of each air damper and the two wind wheels can be controlled to change the flow direction of the air in the housing. Different combinations of the opening and closing states of the wind wheels and air dampers correspond to different function modes, thereby realizing the switching of the fresh air function, exhaust function, purification function, and humidification function.

[0044] In one embodiment, referring to Figures 1 to 9 , the diameter of the first wind wheel 210 is larger than the diameter of the second wind wheel 220. In this embodiment, the first wind wheel 210 is arranged above the second wind wheel 220. The tail section of the first air duct 151 corresponding to the first wind wheel 210 is arranged vertically downward, and the second wind wheel 220 is arranged on one side of the tail section of the first air duct 151. The second air duct 152 is also arranged vertically downward and correspondingly arranged on one side of the first air duct 151. Thus, while ensuring that the size of the tail section of the first air duct 151 meets the air volume requirements of the air, the space on one side is utilized as much as possible to arrange the second air duct 152 and the second wind wheel 220 to make the air volume larger. Specifically, the first wind wheel 210 and the first air duct 151 are arranged in the upper and left regions of the mounting plate 131, and the second wind wheel 220 and the second air duct 152 are arranged in the lower right corner region of the mounting plate 131. The diameter of the first wind wheel 210, while meeting the air duct layout, is as close as possible to the width dimension of the housing 110 to increase the exhaust air volume. The second wind wheel 220 and the second air duct 152 make full use of the remaining space. Therefore, the diameter of the second wind wheel 220 is smaller than the diameter of the first wind wheel 210. Thus, the air handling device has three gears of wind speeds: high gear wind speed, with both wind wheels turned on; medium gear wind speed, with only the first wind wheel 210 turned on; low gear wind speed, with only the second wind wheel 220 turned on. Thus, different wind speed requirements and function requirements can be met.

[0045] In one embodiment, referring to Figures 1 to 9, both the first wind wheel 210 and the second wind wheel 220 are centrifugal wind wheels, and the axes of the first wind wheel 210 and the second wind wheel 220 extend in the same direction; the first air duct 151 has an extension section 151a extending downward, and the extension section 151a shares the same air duct plate 153 with the second air duct 152. In this embodiment, the first wind wheel 210 and the second wind wheel 220 are arranged on the mounting plate 131, and the axes of both are perpendicular to the mounting plate 131. The extension section 151a of the first air duct 151 extends vertically downward along the edge of the corresponding mounting plate 131, so that the extension direction of the extension section 151a is the tangential direction of the first wind wheel 210, whereby the air flow can be vertically downward output along the extension section 151a to reduce wind resistance. Here, the side of the extension section 151a close to the first wind wheel 210 is defined as the inner side, and the second air duct 152 and the second wind wheel 220 are arranged on the inner side of the extension section 151a. In this embodiment, by arranging the second wind wheel 220 close to the first air duct 151, the air duct plate 153 at the position of the extension section 151a close to the second wind wheel 220 can be shared with the first air duct 151, realizing reasonable utilization of space.

[0046] In one embodiment, referring to Figures 1 to 9 , the extension section 151a includes an inner air duct plate 153a and an outer air duct plate 153b arranged oppositely, the extension section 151a shares the inner air duct plate 153a with the second air duct 152, and the perpendicular line passing through the axis of the first wind wheel 210 is closer to the outer air duct plate 153b than the perpendicular line passing through the axis of the second wind wheel 220. In this embodiment, the side of the extension section 151a close to the first wind wheel 210 is defined as the inner side of the extension section 151a, the second wind wheel 220 is arranged inside the extension pipe, and the axis of the second wind wheel 220 is arranged on the side of the perpendicular line of the axis of the first wind wheel 210 away from the extension section 151a. Thus, the space below the first wind wheel 210 and on one side of the extension section 151a can be further utilized. When the internal space of the housing and the width of the mounting plate 131 permit, the second wind wheel 220 is arranged as far as possible in the direction away from the extension section 151a. Thus, a larger space can be obtained to place the second wind wheel 220, and the outer diameter of the second wind wheel 220 can be maximized. If the first wind wheel 210 and the second wind wheel 220 are arranged with their centers aligned, the perpendicular lines of their axes are collinear, and the space on the side of the second wind wheel 220 away from the extension section 151a is not utilized, affecting the air volume during air exhaust.

[0047] In one embodiment, referring to Figures 1 to 9, the air duct plate 153 extends downward at the air outlet 112 and divides the air outlet 112 into a first outlet 112a corresponding to the first air duct 151 and a second outlet 112b corresponding to the second air duct 152. The first outlet 112a and the second outlet 112b are located at the lower part of the housing. In this embodiment, the air duct plate 153 of the extension section 151a close to the second air wheel 220 continues to extend downward to divide the air outlet 112, so that the air output of the first outlet 112a and the second outlet 112b can be controlled separately.

[0048] In one embodiment, referring to Figures 1 to 9 , the air handling device further includes a mounting plate 131 disposed in the housing and a volute 150 disposed on the mounting plate 131. The volute 150 and the mounting plate 131 respectively form the first air duct 151 and the second air duct 152. The mounting plate 131 is provided with a first inlet 133 corresponding to the first air duct 151 and a second inlet 134 corresponding to the second air duct 152. In this embodiment, the mounting plate 131 is further provided with a surrounding plate 160 perpendicular to its plate surface and extending outward. The surrounding plate 160 corresponds to the air duct plate 153 of the volute 150 one by one. The surrounding plate 160 and the volute 150 are also provided with a corresponding snap structure for the installation of the volute 150, and at the same time, the airtightness of the first air duct 151 and the second air duct 152 is improved.

[0049] In one embodiment, referring to Figures 1 to 9 , a main air duct 170 communicating with the air inlet 111 is further formed in the housing. The main air duct 170 is also communicated with the first air duct 151 and the second air duct 152. A fresh air duct 140 communicating with the outside and the main air duct 170 is further formed in the housing. The air handling device further includes a first air door 141 for conducting or blocking the fresh air duct 140 and the main air duct 170.

[0050] In this embodiment, the mounting plate 131 divides the interior of the outer shell 110 into two front and rear chambers. The rear side of the mounting plate 131 and the outer shell 110 form a receiving chamber for receiving the volute 150. The first air duct 151 and the second air duct 152 are disposed in the receiving chamber. The mounting plate 131 and the mounting frame 130 on its front side and the external outer shell 110 form the main air duct 170.

[0051] In this embodiment, the side edges of the installation frame 130 are recessed inward to form a first installation position 135 for accommodating the fresh air duct 140. The fresh air duct 140 is a cylindrical pipe. The upper end of the fresh air duct 140 is open to form a fresh air inlet 143, and the lower end abuts against the bottom plate 137 of the installation frame 130. A first communication port communicating with the fresh air duct 140 is provided on the side wall of the fresh air duct 140. The first air door 141 is a rotating cylinder with an opening on one side and can rotate within the fresh air duct 140. When the opening faces the main air duct 170 and is docked with the first communication port, the fresh air duct 140 communicates with the main air duct 170; when the opening faces away from the first communication port, the fresh air duct 140 is blocked from the main air duct 170. The air treatment device includes a fresh air mode. In the fresh air mode, the first air door 141 and the air outlet door are opened, the air inlet 111 and the second air door 142 are closed, and air enters the main air duct 170 from the fresh air duct 140, and then passes through the first air duct 151 and / or the second air duct 152 and is discharged from the air outlet 112.

[0052] In one embodiment, an exhaust air duct 180 communicating with the first air duct 151 and the second air duct 152 is further formed in the housing. The air treatment device further includes a second air door 142, and the second air door 142 is used to conduct or block the fresh air duct 140 and the main air duct 170. The second air door 142 is arranged at the lower end of the rotating cylinder; when the opening faces the main air duct 170, the fresh air duct 140 communicates with the main air duct 170; meanwhile, the fresh air duct 140 is blocked from the exhaust air duct 180.

[0053] In this embodiment, the bottom plate 137 of the mounting frame 130 extends downward to form a second partition plate 183. The second partition plate 183, the bottom case and the mounting plate 131 are configured to form the exhaust air passage 180. An exhaust air inlet is further provided on the mounting plate 131. The exhaust air inlet can be provided only in the first air duct 151 or the second air duct 152, or exhaust air inlets can be provided in both air ducts. Thus, single-duct exhaust or double-duct exhaust can be achieved. Specifically, the exhaust air inlet includes a first exhaust air outlet 181 communicated with the first air duct 151 and a second exhaust air outlet 182 communicated with the second air duct 152. The exhaust air inlet on the mounting plate 131 is communicated with the above-mentioned exhaust air passage 180. The second partition plate 183 extends from the surface of the mounting plate 131 towards the first mounting position 135 where the fresh air passage 140 is located. A second communication port 136 communicating the exhaust air passage 180 and the fresh air passage 140 is further provided on the bottom plate 137 of the mounting frame 130. A circular plate body is provided at the lower end of the above-mentioned rotary drum. The plate body is configured as a second air door 142. A third through hole is further provided on the plate body. When the arc-shaped long plate rotates to close the first communication port, the plate body at the lower end also rotates to open the second communication port 136, realizing the communication between the exhaust air passage 180 and the fresh air passage 140.

[0054] Thus, the air treatment device includes an exhaust air mode. In the exhaust air mode, the first air door 141 and the air outlet air door are closed, and the second air door 142 is opened. Air enters the main air duct 170 through the air inlet 111, enters the exhaust air passage 180 through the first air duct 151 and / or the second air duct 152, and is discharged from the fresh air passage 140.

[0055] In one embodiment, referring to Figures 1 to 9 The air treatment device further includes a main air duct 170 provided inside the housing and used for communicating the air inlet 111 with the first air duct 151 and the second air duct 152. The air treatment device further includes a second communication port 136 communicating the fresh air passage 140 and the main air duct 170, and a second communication port 136 valve for controlling the opening and closing of the second communication port 136. In this embodiment, an air inlet air door 121 is provided at the air inlet 111. The air inlet air door 121 is preferably a louver door. In the fresh air mode, the air inlet 111 is closed, the second communication port 136 is opened, external air enters from the fresh air inlet 143, and sequentially enters the room through the second communication port 136, the main air duct 170, the first air duct 151 and / or the second air duct 152, and the air outlet 112.

[0056] In one embodiment, referring to Figures 1 to 9, a purification component docked with the first air duct 151 and a humidification component docked with the second air duct 152 are further provided in the main air duct 170; the air treatment device includes a purification mode, in which the first air damper 141 is closed, indoor air enters the main air duct 170 through the air inlet 111, and sequentially passes through the first air duct 151 and / or the second air duct 152, and is discharged from the air outlet 112.

[0057] In this embodiment, the purification component includes a purification part and a purification part bracket for supporting the purification part. The purification part can be mesh-shaped, and common mesh-shaped purification parts can be HEPA nets, formaldehyde removal nets, TVOC removal nets, activated carbon nets, odor removal nets, etc.; it can also be in the form of non-mesh-shaped plasma, ultraviolet germicidal lamps, etc.

[0058] A first partition 132 is provided inside the installation frame 130. The first partition 132 is arranged between the first inlet 133 and the second inlet 134, separating an upper installation position and a lower installation position. A first filter 310 and a health net 320 are provided in the upper installation position, enabling the first air duct 151 to have filtering and purification functions. The first filter 310 is a HEPA net. At the same time, a humidification component is provided in the lower installation position to enable the second air duct 152 to have a humidification function. A second filter 350 can also be provided in the second air duct 152 to filter the air entering the second air duct 152. The second filter 350 is a HEPA net. In the purification mode, the first air impeller 210 can be controlled to rotate alone so that indoor air is purified by the health net 320 and the first filter 310 and then discharged from the first air duct 151. The two air impellers can also be turned on simultaneously. The first air duct 151 is deeply purified by the first filter 310 and the health net 320, and the second air duct 152 is primarily purified by the second filter 350. When there is a humidification requirement, the second air impeller 220 can be turned on alone or the two air impellers can be turned on simultaneously to realize the humidification treatment of the air entering the device. In this embodiment, the health net 320 also includes formaldehyde removal nets, TVOC removal nets, activated carbon nets, odor removal nets, etc.; it can also be in the form of non-mesh-shaped plasma, ultraviolet germicidal lamps, etc.

[0059] In one embodiment, refer to Figures 1 to 9, the side of the mounting plate 131 facing away from the volute 150 and the housing form the main air duct 170. The humidifying assembly includes a wet film disposed at the second inlet 134 and a water tank 340 disposed on the opposite side of the extension section 151a. The wet film is disposed at the second inlet 134 and the water tank 340 is disposed on the opposite side of the extension section 151a, making full use of the space in the lower mounting position, enabling the size of the water tank 340 to be made larger and enhancing the working duration of the humidifying assembly. In addition, a heating assembly 360, preferably a ceramic heater, may be disposed in the main air duct 170 to heat the air. It should be noted that in the above air duct diagram, the direction of the magnetic induction line in physics is borrowed to identify the wind direction. A circle with a dot represents the direction perpendicular to the drawing and facing the reader, and a circle with a cross represents the direction perpendicular to the drawing and away from the reader.

[0060] The present invention also provides an air conditioner including the above air treatment device. The air conditioner includes a fresh air mode, an exhaust mode, and a purification mode.

[0061] When the fresh air mode is started, the first air damper 141 opens, and the air on the outdoor side passes through the fresh air passage 140 to reach the main air duct 170. At this time, the two air wheels operate simultaneously, and the inhaled air is separately inhaled by the two air wheels in upper and lower paths. The upper path of air sequentially passes through the first filter 310 and the health net 320 and then reaches the first air wheel 210, and finally reaches the room through the air outlet 112. The lower path of air passes through the second filter 350, then passes through the wet film and reaches the second air wheel 220, and finally reaches the room through the air outlet 112. Of course, in this mode, the two air wheels can also operate independently to achieve independent fresh air purification mode and fresh air humidification mode. In addition, the fresh air heating mode can also be started in this mode to realize the heating function of fresh air.

[0062] When the exhaust mode is started, at this time, the air outlet damper, the indoor air passes through the air inlet 111 and reaches the surface in upper and lower layers respectively. The upper path of air sequentially passes through the first filter 310 and the health net 320 and then reaches the first air wheel 210, and then passes through the exhaust passage 180 at the air outlet 112 to reach the second air damper 142; the lower path of air passes through the second filter 350, then passes through the wet film and reaches the second air wheel 220. In this mode, the humidifying assembly does not operate; finally, it passes through the exhaust passage 180 at the air outlet 112 to reach the new second air damper 142. After the two air flows converge, they reach the fresh air inlet 143 through the fresh air passage 140, and then are discharged to the outside through the fresh air pipe. During this process, according to the user's selection, a strong exhaust mode can be selected, where both air wheels operate, or a general exhaust mode, where only one of the two air wheels operates.

[0063] Start the purification mode. At this time, the first air damper 141 is closed, blocking the air flow with the outdoor side. The indoor air passes through the air inlet 111 and reaches the surface in upper and lower layers respectively. One path of the upper-layer air passes through the first filter 310 and the health net 320 in sequence and then reaches the first air wheel 210, and then reaches the indoor through the air outlet 112. One path of the lower-layer air passes through the second filter 350, passes through the wet film and then reaches the second air wheel 220, and finally reaches the indoor through the air outlet 112. Of course, in the purification mode, if you want the purification and humidification mode, you can start the lower small air wheel without running the upper large air wheel. If you don't want humidification, you can start the upper large air wheel without running the lower small air wheel.

[0064] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. An air treatment device, characterized in that, include: A housing, the housing having an air inlet, an air outlet, a first air duct connecting the air inlet and the air outlet, and a second air duct connecting the air inlet and the air outlet, wherein the first air duct and the second air duct are independently arranged; A first wind wheel and a second wind wheel are respectively disposed in the first wind duct and the second wind duct, and the first wind wheel and the second wind wheel are used to suck indoor air from the air inlet and discharge it from the air outlet; The first wind wheel is located above the second wind wheel; An air outlet door, mounted on the housing, for opening and closing the air outlet; A main air duct connected to the air inlet is formed in the shell, and the main air duct is connected to the first air duct and the second air duct; a fresh air channel connected to the outside of the house and the main air duct is also formed in the shell; The air treatment device further includes a first air door, which is used to conduct or block the fresh air channel and the main air duct; An exhaust passage communicating with the first air passage and the second air passage is formed in the housing, and the air treatment device further comprises a second air door, which is used to conduct or block the fresh air passage and the main air passage; The first damper includes a rotating drum provided with a side opening, and the second damper is arranged at the lower end of the rotating drum; when the opening faces the main air duct, the fresh air channel is connected with the main air duct; at the same time, the fresh air channel is blocked from the exhaust air channel.

2. The air treatment device according to claim 1, characterized in that, The diameter of the first wind wheel is greater than the diameter of the second wind wheel.

3. The air treatment device according to claim 2, characterized in that, The first wind wheel and the second wind wheel are both centrifugal wind wheels, and the central axes of the first wind wheel and the second wind wheel extend in the same direction; the first wind duct has an extension section extending downward, and the extension section shares the same wind duct plate with the second wind duct.

4. The air treatment device according to claim 3, characterized in that, The extension section includes an inner air duct plate and an outer air duct plate which are arranged opposite to each other. The extension section and the second air duct share the inner air duct plate. The vertical line passing through the axis of the first wind wheel is closer to the outer air duct plate than the vertical line passing through the axis of the second wind wheel.

5. The air treatment device according to claim 4, wherein The air duct plate extends downward at the air outlet and divides the air outlet into a first outlet corresponding to the first air duct and a second outlet corresponding to the second air duct.

6. The air treatment device according to claim 1, wherein The air treatment device also includes a mounting plate arranged in the shell, and a volute arranged on the mounting plate; the volute and the mounting plate construct the first air duct and the second air duct, and the mounting plate is provided with a first inlet corresponding to the first air duct, and a second inlet corresponding to the second air duct.

7. The air treatment device according to claim 1, characterized in that The main air duct is also provided with a purification component connected to the first air duct, and a humidification component connected to the second air duct; the air treatment device includes a purification mode. In the purification mode, the first damper is closed, and the indoor air enters the main air duct through the air inlet, and passes through the first air duct and / or the second air duct in sequence, and is discharged from the air outlet.

8. The air treatment device according to claim 1, characterized in that, The air handling device includes an exhaust air mode. In the exhaust air mode, the first air damper and the air outlet damper are closed, the second air damper is open, air enters the main air duct through the air inlet, passes through the first air duct and / or the second air duct to enter the exhaust air passage, and is discharged from the fresh air passage.

9. The air treatment device according to claim 1, characterized in that The air handling device includes a fresh air mode. In the fresh air mode, the first air damper and the air outlet damper are open, the air inlet and the second air damper are closed, air enters the main air duct from the fresh air passage, and then passes through the first air duct and / or the second air duct and is discharged from the air outlet.

10. An air conditioner, characterized in that, An air handling device according to any one of claims 1-9 is included.

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