A fresh air device and an indoor unit of an air conditioner

Abstract

The present invention relates to a fresh air device and an indoor unit of an air conditioner. The fresh air device includes a box body; the box body is provided with an indoor air inlet, an outdoor air inlet, an indoor air outlet and an outdoor air outlet through holes; components in the box body cooperate to form a moisture absorption channel and a moisture release channel; the air inlet baffle component and the air outlet baffle component selectively cover the indoor air inlet, the outdoor air inlet, the indoor air outlet and the outdoor air outlet, change the air inlets and outlets of the moisture absorption channel and the moisture release channel, and combine with the rotation of the turntable body to adsorb and release moisture, thereby achieving the effect of humidifying or dehumidifying the air, obtaining different working modes, improving the functional diversity, and avoiding the problem in the prior art that manual water supply by the user is required for humidification using a wet film, and the operation is not convenient enough. It also effectively solves the problems that water storage in a water tank is prone to breeding mosquitoes, microorganisms and generating peculiar smells.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to a fresh air device and an indoor unit of an air conditioner. Background Art

[0002] In the prior art, some air conditioners are equipped with fresh air devices connected to the outside. Fresh air (outdoor air) enters the room through the fresh air device, and fresh air can be introduced without opening the doors and windows. Even when the doors and windows are closed during the operation of the air conditioner, the phenomenon of decreasing O2 concentration and increasing CO2 concentration can be avoided. Furthermore, the phenomenon of dizziness, nausea and other symptoms caused by the decrease of O2 concentration and the increase of CO2 concentration, which damage human health, can be avoided. In addition, to avoid discomfort caused by the large introduction of dry air when the air conditioner is used in areas with too low humidity or in dry autumn and winter seasons, a water tank structure is designed in the fresh air device circuit of the indoor unit of the air conditioner. The user manually supplies water, and a wet film is set. The wet film is wetted by the stored water in the water tank. When dry air passes through, moist air is sent to the room to form an ideal humidifying effect. However, in this design, the independent water tank structure requires the user to manually supply water, and the operation is not convenient enough. If an external water circuit is used, pipeline transformation is required, which increases the site requirements. Long-term water accumulation in the water tank will cause the breeding of mosquitoes or microorganisms, and at the same time will cause peculiar smell, affecting the user experience. In addition, only humidification can be achieved in this design, and the demand for the dehumidification function of users in areas with too high humidity or in rainy seasons with heavy humidity cannot be met. Summary of the Invention

[0003] Based on this, the purpose of the present invention is to provide a fresh air device, which can introduce fresh air and has the functions of humidification and dehumidification when applied to an indoor unit of an air conditioner.

[0004] A fresh air device includes a box body; the box body is hollow and is provided with an indoor air inlet, an outdoor air inlet, an indoor air outlet and an outdoor air outlet penetrating through it;

[0005] A moisture absorption channel for adsorbing moisture contained in the air, a moisture release channel for releasing moisture to the air, a turntable assembly, a heater, an air inlet baffle assembly and an air outlet baffle assembly are arranged in the box body;

[0006] The turntable assembly includes a turntable body, which is made of a hydrophilic material that absorbs moisture and releases moisture when heated, and is rotatably arranged in the moisture absorption channel and the moisture release channel; the heater is arranged in the moisture release channel and is located on the side of the turntable body facing the air inlet direction;

[0007] The air inlet baffle assembly is fixed to the box body, and its movable cover covers the indoor air inlet or the outdoor air inlet, and makes the air inlet ends of the moisture absorption channel and the moisture release channel communicate with the indoor air inlet and the outdoor air inlet in pairs correspondingly; the air outlet baffle assembly is fixed to the box body, and its movable cover covers the indoor air outlet or the outdoor air outlet, and makes the air outlet ends of the moisture absorption channel and the moisture release channel communicate with the indoor air outlet and the outdoor air outlet in pairs correspondingly.

[0008] In the fresh air device according to the embodiment of the present invention, a moisture absorption channel and a moisture release channel are arranged in the box body. The turntable body made of a special hydrophilic material circulates and rotates in the moisture absorption channel and the moisture release channel. Further combined with the settings of the air inlet baffle assembly and the air outlet baffle assembly, different working modes are obtained through the switching of indoor air inlet, outdoor air inlet, indoor air outlet, and outdoor air outlet, and the cooperation with the moisture absorption channel and the moisture release channel. When the turntable body moves to the moisture absorption channel, the moisture in the humid air can be adsorbed in the turntable body, achieving the effect of dehumidifying the air. However, when the part of the turntable body adsorbed with moisture moves to the moisture release channel, by the heating and temperature rising effect of the heater, the water vapor adsorbed in the turntable body is released and re-enters the flowing air, achieving the effect of humidifying the air; through air external circulation and air internal circulation, multiple working modes with different functions can be obtained by matching with moisture absorption and moisture release operations, such as fresh air humidification, fresh air dehumidification, indoor air circulation humidification, or indoor air circulation dehumidification functions, improving the functional diversity and fully meeting the different needs of users; in addition, the setting of the turntable body avoids the problem that in the prior art, manual water supply by the user is required for humidification using a wet film, and the operation is not convenient enough, and effectively solves the problems that water storage in the water tank is prone to breeding mosquitoes, microorganisms, and generating odors.

[0009] Furthermore, a turntable channel assembly, a first filter screen, a second filter screen, a first air duct volute, and a second air duct volute are also arranged in the box body;

[0010] The turntable channel assembly includes a turntable support and a channel separator; the turntable support forms a turntable channel, and the channel separator is fixed to the turntable support and divides the turntable channel into a first turntable channel and a second turntable channel along the radial direction;

[0011] The turntable assembly further includes a driving device; the turntable body is rotatably arranged on the turntable support, and its rotation axis coincides with the central axis of the turntable channel; the driving device drives the turntable body to circulate and rotate and sequentially passes through the first turntable channel and the second turntable channel;

[0012] The first filter screen, the first turntable channel, and the first air duct volute are sequentially connected to form the moisture absorption channel; the second filter screen, the second turntable channel, and the second air duct volute are sequentially connected to form the moisture release channel, wherein the heater is disposed in the second turntable channel.

[0013] Further, the indoor air inlet, the outdoor air inlet, and the outdoor air outlet are all located on the side of the box body facing the back of the fresh air device, and the indoor air outlet is located on the side of the box body facing the side of the fresh air device, making the air inlet and outlet design of the fresh air device more reasonable, and enabling the pipes matched with it to be arranged on the back of the indoor unit of the air conditioner, improving the overall appearance beauty of the unit; the indoor air inlet includes a first indoor air inlet and a second indoor air inlet, the outdoor air inlet includes a first outdoor air inlet and a second outdoor air inlet, and the indoor air outlet includes a first indoor air outlet and a second indoor air outlet; wherein, the first indoor air inlet and the second indoor air inlet are arranged adjacent to each other; the first outdoor air inlet and the second outdoor air inlet are arranged adjacent to each other and are correspondingly located below the first indoor air inlet and the second indoor air inlet; the first indoor air outlet and the second indoor air outlet are arranged adjacent to each other.

[0014] Further, the air inlet baffle assembly includes a first air inlet baffle and a second air inlet baffle. The first air inlet baffle selectively covers the first indoor air inlet or the first outdoor air inlet, and connects the first outdoor air inlet or the first indoor air inlet to the air inlet end of the moisture absorption channel; the second air inlet baffle selectively covers the second indoor air inlet or the second outdoor air inlet, and connects the second outdoor air inlet or the second indoor air inlet to the air inlet end of the moisture release channel;

[0015] The air outlet baffle assembly movably covers the second indoor air outlet, connecting the air outlet end of the moisture absorption channel to the first indoor air outlet, and connecting the air outlet end of the moisture release channel to the outdoor air outlet; or, the air outlet baffle assembly movably covers the first indoor air outlet, connecting the air outlet end of the moisture release channel to the second indoor air outlet, and connecting the air outlet end of the moisture absorption channel to the outdoor air outlet.

[0016] Furthermore, the cross-section of the turntable channel is circular, and the turntable body has a circular structure matching the cross-section of the turntable channel; the turntable body is provided with a body gear along the circumferential direction; the driving device is fixed to the turntable support, and includes a driving motor and a driving gear rotatably connected to the driving motor, and the driving gear meshes with the body gear. By using the cooperation of the driving gear and the body gear, the turntable body can be driven from its outer periphery, providing power for its rotation without blocking the turntable body, thus avoiding affecting its contact with moisture in the air and its reception of the heat energy of the heater.

[0017] Furthermore, the cross-sections of both the first turntable channel and the second turntable channel are fan-shaped, and the cross-sectional area of the first turntable channel is larger than that of the second turntable channel. This setting helps the first turntable channel to fully contact the air so as to adsorb the moisture in the air.

[0018] Furthermore, the heater has the same shape as the cross-section of the second turntable channel, which facilitates the heater to fully heat the turntable body located in the second turntable channel and release the adsorbed moisture back into the air.

[0019] Furthermore, the first air duct volute includes a first air guide ring, a first centrifugal fan and a first fan motor; the first air guide ring is fixed to the turntable support, has a hollow structure, and is provided with a first air guide inlet and a first air guide outlet; the first fan motor is fixedly arranged inside the first air guide ring, the first centrifugal fan is fixedly connected to the first fan motor, and rotates around the axis under the drive of the first fan motor;

[0020] The second air duct volute includes a second air guide ring, a second centrifugal fan and a second fan motor; the second air guide ring is fixedly connected to the turntable support and the inner side of the box body, has a hollow structure, and is provided with a second air guide inlet and a second air guide outlet; the second fan motor is fixedly arranged inside the second air guide ring, the second centrifugal fan is fixedly connected to the second fan motor, and rotates around the axis under the drive of the first fan motor.

[0021] The first air duct volute and the second air duct volute are used to provide power for the air flow in the box body and limit its flow direction to achieve various functions.

[0022] Further, the box body includes a first box board and a second box board that are detachably fixed. The first box board is disposed facing the front of the fresh air device, and a maintenance window is formed therethrough. The first filter screen and the second filter screen are integrally fixed HEPA filter screens, which are detachably fixed in the box body and can be movably passed through the maintenance window. The detachable and fixed setting of the first box board and the second box board facilitates the assembly of each component in the fresh air device and the maintenance and replacement operations during subsequent use, and the HEPA filter screen can be directly replaced from the maintenance window, further simplifying the difficulty of subsequent maintenance.

[0023] In addition, an indoor unit of an air conditioner provided by an embodiment of the present invention includes an indoor unit body and the fresh air device described above. The indoor unit body includes a housing, and a receiving cavity is provided in the housing. The fresh air device is disposed in the receiving cavity. The housing is provided with a side air outlet and a back air outlet. The side air outlet is communicated with the indoor air outlet of the fresh air device, and the back air outlet is communicated with the indoor air inlet, the outdoor air inlet, and the outdoor air outlet of the fresh air device.

[0024] For the indoor unit of the air conditioner according to the embodiment of the present invention, by providing the fresh air device, it is possible to comprehensively perform the humidity adjustment function of humidifying or dehumidifying the indoor air. Combining the two modes of indoor and outdoor air circulation and indoor circulation, multiple function modes can be obtained, effectively improving the functional diversity and meeting the different needs of users.

[0025] For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0026] Figure 1 It is an exploded schematic view of the structure of the fresh air device according to Embodiment 1 of the present invention;

[0027] Figure 2 It is an overall schematic view of the structure of the fresh air device according to Embodiment 1 of the present invention;

[0028] Figure 3 It is a schematic view of a partial structure of the fresh air device according to Embodiment 1 of the present invention from a first angle;

[0029] Figure 4 It is a schematic view of a partial structure of the fresh air device according to Embodiment 1 of the present invention from a second angle;

[0030] Figure 5 It is a schematic view of the turntable assembly and the turntable support member according to Embodiment 1 of the present invention;

[0031] Figure 6 It is a schematic view of the turntable body and the driving device according to Embodiment 1 of the present invention;

[0032] Figure 7 Schematic diagram of air flow in the moisture absorption channel in the fresh air humidification function mode described in Embodiment 1 of the present invention;

[0033] Figure 8 Schematic diagram of air flow in the moisture release channel in the fresh air humidification function mode described in Embodiment 1 of the present invention;

[0034] Figure 9 Schematic diagram of air flow in the moisture absorption channel in the fresh air dehumidification function mode described in Embodiment 1 of the present invention;

[0035] Figure 10 Schematic diagram of air flow in the moisture release channel in the fresh air dehumidification function mode described in Embodiment 1 of the present invention;

[0036] Figure 11 Schematic diagram of air flow in the moisture absorption channel in the circulating humidification function mode described in Embodiment 1 of the present invention;

[0037] Figure 12 Schematic diagram of air flow in the moisture release channel in the circulating humidification function mode described in Embodiment 1 of the present invention;

[0038] Figure 13 Schematic diagram of air flow in the moisture absorption channel in the circulating dehumidification function mode described in Embodiment 1 of the present invention;

[0039] Figure 14 Schematic diagram of air flow in the moisture release channel in the circulating dehumidification function mode described in Embodiment 1 of the present invention;

[0040] Figure 15 Front schematic diagram of the indoor unit structure of the air conditioner described in Embodiment 2 of the present invention;

[0041] Figure 16 Side schematic diagram of the indoor unit structure of the air conditioner described in Embodiment 2 of the present invention;

[0042] Figure 17 Back schematic diagram of the indoor unit structure of the air conditioner described in Embodiment 2 of the present invention. Detailed implementation manners

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0044] Example 1

[0045] Please refer to Figures 1-4 , Figure 1 , which is an exploded schematic view of the structure of the fresh air device described in Embodiment 1 of the present invention. Figure 2 , which is an overall schematic view of the structure of the fresh air device described in Embodiment 1 of the present invention. Figure 3 , which is a schematic view of the local structure of the fresh air device described in Embodiment 1 of the present invention from Angle 1. Figure 4 , which is a schematic view of the local structure of the fresh air device described in Embodiment 1 of the present invention from Angle 2. As shown in the figure, Embodiment 1 of the present invention provides a fresh air device, which is applied to an indoor unit of an air conditioner. It includes a box body 1. The box body 1 is provided in a hollow manner, and is provided with an indoor air inlet, an outdoor air inlet, an indoor air outlet, and an outdoor air outlet 17 through it; a moisture absorption channel for adsorbing moisture contained in the air, a moisture release channel for releasing moisture to the air, a turntable assembly, a heater 24, an air inlet baffle assembly 7, and an air outlet baffle assembly 8 are arranged in the box body 1.

[0046] The turntable assembly includes a turntable body 31, which is made of a hydrophilic material that absorbs moisture and releases moisture when heated, and is rotatably arranged in the moisture absorption channel and the moisture release channel; the heater 24 is arranged in the moisture release channel and is located on one side of the turntable body facing the air inlet direction.

[0047] The air inlet baffle assembly 7 is fixed to the inner side of the box body 1, and movably covers the indoor air inlet or the outdoor air inlet, and makes the air inlet ends of the moisture absorption channel and the moisture release channel communicate with the indoor air inlet and the outdoor air inlet in pairs correspondingly; the air outlet baffle assembly 8 is fixed to the inner side of the box body 1, and movably covers the indoor air outlet or the outdoor air outlet 17, and makes the air outlet ends of the moisture absorption channel and the moisture release channel communicate with the indoor air outlet and the outdoor air outlet 17 in pairs correspondingly.

[0048] Specifically, a turntable channel assembly, a first filter screen 41, a first air duct volute 5, a second filter screen 42, and a second air duct volute 6 are further arranged in the box body;

[0049] The turntable channel assembly includes a turntable support 21 and a channel separator 22. The turntable support 21 forms a turntable channel, and the channel separator 22 is fixed to the turntable support 21 and divides the turntable channel into a first turntable channel 231 and a second turntable channel 232 along the radial direction; Please refer to Figure 5 , Figure 5Schematic diagram of the turntable assembly and the turntable support member according to Embodiment 1 of the present invention. The turntable assembly further includes a driving device 32. The turntable body 31 is rotatably disposed on the turntable support member 21, and its rotation axis coincides with the central axis of the turntable channel. The driving device 32 drives the turntable body 31 to rotate cyclically and sequentially passes through the first turntable channel 231 and the second turntable channel 232.

[0050] In this embodiment, the first filter screen 41, the first turntable channel 231, and the first air duct volute 5 are sequentially connected to form the moisture absorption channel; the second filter screen 42, the second turntable channel 232, and the second air duct volute 6 are sequentially connected to form the moisture discharge channel.

[0051] As an alternative embodiment, in this embodiment, the indoor air inlet, the outdoor air inlet, and the outdoor air outlet 17 are all located on the side of the box body 1 facing the back of the fresh air device, and the indoor air outlet is located on the side of the box body 1 facing the side of the fresh air device, making the air inlet and outlet design of the fresh air device more reasonable and enabling the pipes matching it to be arranged on the back of the indoor unit of the air conditioner, improving the overall appearance beauty of the unit.

[0052] Please refer to Figure 2 , the indoor air inlet includes a first indoor air inlet 11 and a second indoor air inlet 12, the outdoor air inlet includes a first outdoor air inlet 13 and a second outdoor air inlet 14, and the indoor air outlet includes a first indoor air outlet 15 and a second indoor air outlet 16. Among them, the first indoor air inlet 11 and the second indoor air inlet 12 are adjacent to each other; the first outdoor air inlet 13 and the second outdoor air inlet 14 are adjacent to each other and are correspondingly located below the first indoor air inlet 11 and the second indoor air inlet 12; the first indoor air outlet 15 is adjacent to the second indoor air outlet.

[0053] The positions of the first indoor air inlet 11, the second indoor air inlet 12, the first outdoor air inlet 13, and the second outdoor air inlet 14 are arranged such that the first air inlet baffle 71 and the second air inlet baffle 72 can be turned up or down to selectively cover each air inlet to achieve the switching between indoor air intake and outdoor air intake.

[0054] The air inlet baffle assembly 7 includes a first air inlet baffle 71 and a second air inlet baffle 72. The first air inlet baffle 71 selectively covers the first indoor air inlet 11 or the first outdoor air inlet 13, and connects the first outdoor air inlet 13 or the first indoor air inlet 11 to the moisture absorption channel. The second air inlet baffle 72 selectively covers the second indoor air inlet 12 or the second outdoor air inlet 14, and connects the second outdoor air inlet 14 or the second indoor air inlet 12 to the air inlet end of the moisture release channel. The air outlet baffle assembly 8 movably covers the second indoor air outlet 16, connecting the air outlet end of the moisture absorption channel to the first indoor air outlet 15, and connecting the moisture release channel to the outdoor air outlet 17. Or, the air outlet baffle assembly 8 movably covers the first indoor air outlet 15, connecting the air outlet end of the moisture release channel to the second indoor air outlet, and connecting the air outlet end of the moisture absorption channel to the outdoor air outlet 17.

[0055] As an alternative embodiment, in this embodiment, please refer to Figure 6 , Figure 6 is a schematic structural diagram of the turntable body and the driving device described in Embodiment 1 of the present invention. As shown in the figure, the cross-section of the turntable channel is circular, and the turntable body 31 has a circular structure matching the cross-section of the turntable channel. The turntable body 31 is provided with a body gear 311 along the circumferential direction. The driving device 32 is fixed to the turntable support 21, and includes a driving motor 321 and a driving gear 322 rotatably connected to the driving motor 321. The driving gear 322 meshes with the body gear 311. By using the cooperation of the driving gear 322 and the body gear 311, the turntable body 31 can be driven from the outer periphery thereof, providing power for its rotation without blocking the turntable body 31, and avoiding affecting its contact with moisture in the air and its reception of the heat energy of the heater 24.

[0056] The cross-sections of both the first turntable channel 231 and the second turntable channel 232 are fan-shaped. The angles of the two fans are complementary, and the cross-sectional area of the first turntable channel 231 is larger than the cross-sectional area of the second turntable channel 232. This setting helps the first turntable channel 231 to fully contact the air, so as to adsorb moisture in the air.

[0057] As an alternative embodiment, in this embodiment, the heater 24 has the same shape as the cross-section of the second turntable channel 232, which is convenient for the heater 24 to fully heat the turntable body 31 located in the second turntable channel 232 and release the adsorbed moisture back into the air.

[0058] Specifically, the first air duct volute 5 includes a first air guide ring, a first centrifugal fan, and a first fan motor; the first air guide ring is fixed to the turntable support 21, which is of a hollow structure and is provided with a first air guide inlet and a first air guide outlet; the first fan motor is fixedly arranged within the first air guide ring, the first centrifugal fan is fixedly connected to the first fan motor, and rotates around the axis under the drive of the first fan motor; the second air duct volute 6 includes a second air guide ring, a second centrifugal fan, and a second fan motor; the second air guide ring is fixedly connected to the turntable support 21 and the inner side of the box body 1, which is of a hollow structure and is provided with a second air guide inlet and a second air guide outlet; the second fan motor is fixedly arranged within the second air guide ring, the second centrifugal fan is fixedly connected to the second fan motor, and rotates around the axis under the drive of the first fan motor. The first air duct volute 5 and the second air duct volute 6 are used to provide power for the air flow within the box body 1 and limit its flow direction to achieve various functions.

[0059] As an alternative embodiment, in this embodiment, the box body 1 includes a first box board 18 and a second box board 19 that are detachably fixed. The first box board 18 is arranged on the front side facing the fresh air device and is provided with a maintenance window 10 that penetrates through it; the first filter screen and the second filter screen are an integrally fixed HEPA filter screen, which is detachably fixed within the box body 1 and can be movably passed through the maintenance window 10. HEPA (High Efficiency Particulate Air Filter), that is, a high-efficiency air filter, has an efficiency of 99.7% for 0.1 micrometers and 0.3 micrometers, and can effectively filter pollutants such as smoke, dust, and bacteria to ensure the indoor air quality. The detachable and fixed arrangement of the first box board 18 and the second box board 19 facilitates the assembly of each component within the fresh air device and the maintenance and replacement operations during subsequent use, and the HEPA filter screen can be directly replaced through the maintenance window 10, further simplifying the difficulty of subsequent maintenance. Further preferably, a heat insulation material is attached to the outer side of the box body 1, which can reduce the condensation problem caused by the temperature difference between the inside and the outside.

[0060] In the fresh air device according to Embodiment 1 of the present invention, a moisture absorption channel and a moisture release channel are arranged in the box body. A turntable body made of a special hydrophilic material circulates and rotates in the first turntable channel and the second turntable channel, that is, it continuously switches between the moisture absorption channel and the moisture release channel. Further, in combination with the settings of the inlet air baffle assembly and the outlet air baffle assembly, different working modes are obtained through the switching of indoor inlet air, outdoor inlet air, indoor outlet air, and outdoor outlet air, and the cooperation with the moisture absorption channel and the moisture release channel. When the turntable body moves to the moisture absorption channel, the moisture in the humid air can be adsorbed into the turntable body, achieving the effect of dehumidifying the air. However, when the part of the turntable body adsorbed with moisture moves to the moisture release channel, by the heating and temperature rising effect of the heater, the water vapor adsorbed in the turntable body is released and re-enters the flowing air, achieving the effect of humidifying the air; through the external air circulation and the internal air circulation, multiple working modes with different functions can be obtained by the combination of moisture absorption and moisture release operations, such as the functions of fresh air humidification, fresh air dehumidification, indoor air circulation humidification, or indoor air circulation dehumidification.

[0061] When the indoor air humidity is low and it is necessary to realize the indoor and outdoor air circulation, the fresh air humidification function mode is applied. At this time:

[0062] Please refer to Figure 7 , Figure 7 which is the schematic diagram of the air flow in the moisture absorption channel in the fresh air humidification function mode according to Embodiment 1 of the present invention. As shown in the figure, for the moisture absorption channel, the inlet air baffle assembly 7 is switched, so that the first inlet air baffle 71 is turned down and covers the first outdoor air inlet 13, and the moisture absorption channel intakes air from the first indoor air inlet 11; the outlet air baffle assembly 8 is movably covered on the first indoor air outlet 15, so that the moisture absorption channel is communicated with the outdoor air outlet 17; the air inhaled from the first indoor air inlet 11 sequentially passes through the first filter screen 41 and the first turntable channel 231, and the water vapor contained in the air is adsorbed on the turntable body 31 in the first turntable channel 231, realizing the collection of moisture; the dried air is discharged to the outside through the first air duct volute 5 and the outdoor air outlet 17.

[0063] Please refer to Figure 8 , Figure 8Schematic diagram of air flow in the moisture release channel in the fresh air humidification function mode described in Embodiment 1 of the present invention. As shown in the figure, for the moisture release channel, the air inlet baffle assembly 7 is switched, so that the second air inlet baffle 72 is turned up and covers the second indoor air inlet 12, and the moisture release channel intakes air from the second outdoor air inlet 14; the air outlet baffle assembly 8 is movably covered on the first indoor air outlet 15, so that the moisture release channel is communicated with the second indoor air outlet 16; as the turntable body 31 rotates around the axis, the part of it that has adsorbed water vapor rotates into the second turntable channel 232, and the air inhaled from the second outdoor air inlet 14 sequentially passes through the second filter screen 42 and the second turntable channel 232, and the heater 24 located in the second turntable channel 232 heats up. The turntable body 31 is heated and the water vapor adsorbed on the turntable body 31 is released back into the air again, achieving the purpose of humidifying the air and drying the part of the turntable body 31. Subsequently, the outdoor air carrying water vapor is discharged into the indoor space from the second indoor air outlet 16 after passing through the second air duct volute 6 to increase the humidity of the indoor air.

[0064] When the indoor air humidity is too high and air indoor-outdoor circulation needs to be achieved, the fresh air dehumidification function mode is applied. At this time:

[0065] Please refer to Figure 9 , Figure 9 Schematic diagram of air flow in the moisture absorption channel in the fresh air dehumidification function mode described in Embodiment 1 of the present invention. As shown in the figure, for the moisture absorption channel, the air inlet baffle assembly 7 is switched, so that the first air inlet baffle 71 is turned up and covers the first indoor air inlet 11, and the moisture absorption channel intakes air from the first outdoor air inlet 13; the air outlet baffle assembly 8 is movably covered on the second indoor air outlet 16, so that the moisture absorption channel is communicated with the first indoor air outlet 15; the air inhaled from the first outdoor air inlet 13 sequentially passes through the first filter screen 41 and the first turntable channel 231, and the water vapor contained in the air is adsorbed on the turntable body 31 in the first turntable channel 231 to collect moisture, achieving the purpose of dehumidifying the air; the dried air is discharged into the indoor space from the first indoor air outlet 15 after passing through the first air duct volute 5 to inject dry fresh air into the room;

[0066] Please refer to Figure 10 , Figure 10This is a schematic diagram of the air flow in the moisture discharge channel in the fresh air dehumidification function mode described in Embodiment 1 of the present invention. As shown in the figure, for the moisture discharge channel, the air inlet baffle assembly 7 is switched, so that the second air inlet baffle 72 is turned down and covers the second outdoor air inlet 14, and the moisture discharge channel intakes air from the second indoor air inlet 12; the air outlet baffle assembly 8 movably covers the second indoor air outlet 16, so that the moisture discharge channel is communicated with the outdoor air outlet 17; as the turntable body 31 rotates around the axis, the part thereof adsorbed with water vapor rotates into the second turntable channel 232, and the air inhaled from the second indoor air inlet 12 sequentially passes through the second filter screen 42 and the second turntable channel 232, and is heated and raised in temperature by the heater 24, so that the water vapor adsorbed on the turntable body 31 is released into the air again, and the turntable body 31 of this part is restored to dryness, so as to continue to dehumidify the air after rotating back into the first turntable channel 231; then the air carrying water vapor is discharged to the outside through the outdoor air outlet 17.

[0067] When the indoor air humidity is low and indoor air circulation needs to be realized, the circulation humidification function mode is applied. At this time:

[0068] Please refer to Figure 11 , Figure 11 This is a schematic diagram of the air flow in the moisture absorption channel in the circulation humidification function mode described in Embodiment 1 of the present invention. As shown in the figure, for the moisture absorption channel, the air inlet baffle assembly 7 is switched, so that the first air inlet baffle 71 is turned up and covers the first indoor air inlet 11, and the moisture absorption channel intakes air from the first outdoor air inlet 13; the air outlet baffle assembly 8 movably covers the first indoor air outlet 15, so that the moisture absorption channel is communicated with the outdoor air outlet 17; the air inhaled from the first outdoor air inlet 13 sequentially passes through the first filter screen 41 and the first turntable channel 231, and the water vapor contained in the air is adsorbed on the turntable body 31 in the first turntable channel 231 to realize the collection of moisture; the dried air is discharged to the outside through the outdoor air outlet 17 after passing through the first air duct volute 5;

[0069] Please refer to Figure 12 , Figure 12Schematic diagram of air flow in the moisture discharge channel in the cycle humidification function mode described in Embodiment 1 of the present invention. As shown in the figure, for the moisture discharge channel, the air inlet baffle assembly 7 is switched, so that the second air inlet baffle 72 is turned down and covers the second outdoor air inlet 14, and the moisture discharge channel intakes air from the second indoor air inlet 12; the air outlet baffle assembly 8 movably covers the first indoor air outlet 15, so that the moisture discharge channel is communicated with the second indoor air outlet 16; as the turntable body 31 rotates around the axis, the part thereof adsorbed with water vapor rotates into the second turntable channel 232, and the indoor air inhaled from the second outdoor air inlet 14 sequentially passes through the second filter screen 42 and the second turntable channel 232, and the heater 24 located in the second turntable channel 232 heats up. The turntable body 31 is heated and the water vapor adsorbed on the turntable body 31 is released into the air again, so as to achieve the purpose of humidifying the air and drying the turntable body 31 of this part again. Subsequently, the air carrying water vapor passes through the second air duct volute 6 and is discharged from the second indoor air outlet 16 back into the indoor space to increase the humidity of the indoor air.

[0070] When the indoor air humidity is relatively high and indoor air circulation needs to be achieved, the cycle dehumidification function mode is applied. At this time:

[0071] Please refer to Figure 13 , Figure 13 Schematic diagram of air flow in the moisture absorption channel in the cycle dehumidification function mode described in Embodiment 1 of the present invention. As shown in the figure, for the moisture absorption channel, the air inlet baffle assembly 7 is switched, so that the first air inlet baffle 71 is turned down and covers the first outdoor air inlet 13, and the moisture absorption channel intakes air from the first indoor air inlet 11; the air outlet baffle assembly 8 movably covers the second indoor air outlet 16, so that the moisture absorption channel is communicated with the first indoor air outlet 15; the air inhaled from the first outdoor air inlet 13 sequentially passes through the first filter screen 41 and the first turntable channel 231, and the water vapor contained in the air is adsorbed on the turntable body 31 in the first turntable channel 231 to collect moisture, so as to achieve the purpose of dehumidifying the air; the dried air passes through the first air duct volute 5 and is discharged from the first indoor air outlet 15 back into the room to reduce the humidity of the indoor air;

[0072] Please refer to Figure 14 , Figure 14Schematic diagram of air flow in the moisture release channel in the circulating dehumidification function mode described in Embodiment 1 of the present invention. As shown in the figure, for the moisture release channel, the air inlet baffle assembly 7 is switched, so that the second air inlet baffle 72 is turned up and covers the second indoor air inlet 12, and the moisture release channel intakes air from the second outdoor air inlet 14; the air outlet baffle assembly 8 movably covers the second indoor air outlet 16, so that the moisture release channel is communicated with the outdoor air outlet 17; as the turntable body 31 rotates around the axis, the part of it that has adsorbed water vapor rotates into the second turntable channel 232. The air inhaled from the second outdoor air inlet 14 sequentially passes through the second filter screen 42 and the second turntable channel 232. The heater 24 located in the second turntable channel 232 heats up, the turntable body 31 is heated, and the water vapor adsorbed on the turntable body 31 is released back into the air again, so that the part of the turntable body 31 is dried again, so as to continue to dehumidify the air after rotating back into the first turntable channel 231; subsequently, the air carrying water vapor is discharged to the outside through the second air duct volute 6 and the outdoor air outlet 17.

[0073] In summary, the fresh air device described in Embodiment 1 of the present invention obtains the above different function modes through structural settings, effectively improves the functional diversity, and fully meets the different needs of users; in addition, the setting of the turntable body 31 avoids the problem that in the prior art, manual water supply by users is required for wet film humidification, and the operation is not convenient enough, and effectively solves the problems that water storage in the water tank is prone to breeding mosquitoes, microorganisms and generating peculiar smells. In addition, by limiting the positions of the indoor air inlet, outdoor air inlet, indoor air outlet and outdoor air outlet on the box body, the air inlet and outlet design of the fresh air device is more reasonable, and in addition, the pipeline matched with it can be arranged on the back of the whole air conditioner indoor unit, improving the overall appearance beauty of the machine.

[0074] Example 2

[0075] Please refer to Figures 15-17 , Figure 15 Front view schematic diagram of the structure of the air conditioner indoor unit described in Embodiment 2 of the present invention, Figure 16 Side view schematic diagram of the structure of the air conditioner indoor unit described in Embodiment 2 of the present invention, Figure 17 Rear view schematic diagram of the structure of the air conditioner indoor unit described in Embodiment 2 of the present invention. Embodiment 2 of the present invention provides an air conditioner indoor unit, which includes an indoor unit body and the fresh air device 100 described above; the indoor unit body includes a housing 91, a receiving cavity 92 is arranged inside the housing 91, and the fresh air device 100 is arranged in the receiving cavity 92; the housing 91 is provided with a side air outlet 93 and a rear air outlet 94. The side air outlet 93 is communicated with the indoor air outlet of the fresh air device, and the rear air outlet 94 is communicated with the indoor air inlet, outdoor air inlet and outdoor exhaust outlet of the fresh air device.

[0076] The indoor unit of the air conditioner described in Embodiment 2 of the present invention can comprehensively adjust the humidity by humidifying or dehumidifying the indoor air. By combining the two modes of indoor and outdoor air circulation and indoor circulation, multiple functional modes can be obtained, effectively improving the functional diversity and meeting the different needs of users.

[0077] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A fresh air device, which is applied to an indoor unit of an air conditioner, and is characterized in that: It includes a box body; the box body is hollow, and is provided with an indoor air inlet, an outdoor air inlet, an indoor air outlet, an outdoor air outlet, a turntable channel assembly, a first filter screen, a second filter screen, a first air duct volute and a second air duct volute through it; Inside the box body, there are provided a moisture absorption channel for adsorbing moisture contained in the air, a moisture release channel for releasing moisture to the air, a turntable assembly, a heater, an air inlet baffle assembly and an air outlet baffle assembly; The turntable assembly includes a turntable body which is made of a hydrophilic material that absorbs moisture and releases moisture when heated, and is rotatably arranged in the moisture absorption channel and the moisture release channel; the heater is arranged in the moisture release channel and is located on one side of the turntable body facing the air inlet direction; The turntable channel assembly includes a turntable support and a channel partition; the turntable support forms a turntable channel, and the channel partition is fixed to the turntable support and divides the turntable channel into a first turntable channel and a second turntable channel along the radial direction; The first filter screen, the first turntable channel and the first air duct volute are sequentially connected to form the moisture absorption channel; the second filter screen, the second turntable channel and the second air duct volute are sequentially connected to form the moisture release channel, and the heater is arranged in the second turntable channel; The air inlet baffle assembly is fixed to the box body, and movably covers the indoor air inlet or the outdoor air inlet, and makes the air inlet ends of the moisture absorption channel and the moisture release channel communicate with the indoor air inlet and the outdoor air inlet in pairs correspondingly; the air outlet baffle assembly is fixed to the box body, and movably covers the indoor air outlet or the outdoor air outlet, and makes the air outlet ends of the moisture absorption channel and the moisture release channel communicate with the indoor air outlet and the outdoor air outlet in pairs correspondingly; The indoor air inlet includes a first indoor air inlet and a second indoor air inlet, the outdoor air inlet includes a first outdoor air inlet and a second outdoor air inlet, and the indoor air outlet includes a first indoor air outlet and a second indoor air outlet; the air inlet baffle assembly includes a first air inlet baffle and a second air inlet baffle, the first air inlet baffle selectively covers the first indoor air inlet or the first outdoor air inlet, and makes the first outdoor air inlet or the first indoor air inlet communicate with the air inlet end of the moisture absorption channel; the second air inlet baffle selectively covers the second indoor air inlet or the second outdoor air inlet, and makes the second outdoor air inlet or the second indoor air inlet communicate with the air inlet end of the moisture release channel; The air outlet baffle assembly movably covers the second indoor air outlet, making the air outlet end of the moisture absorption channel communicate with the first indoor air outlet, and the air outlet end of the moisture release channel communicate with the outdoor air outlet; or, the air outlet baffle assembly movably covers the first indoor air outlet, making the air outlet end of the moisture release channel communicate with the second indoor air outlet, and the air outlet end of the moisture absorption channel communicate with the outdoor air outlet.

2. The fresh air device according to claim 1, characterized in that: The turntable assembly further includes a driving device; the turntable body is rotatably arranged on the turntable support, and its rotation axis coincides with the central axis of the turntable channel; The driving device drives the turntable body to rotate cyclically and sequentially passes through the first turntable channel and the second turntable channel.

3. The fresh air device according to claim 2, characterized in that: The indoor air inlet, the outdoor air inlet, and the outdoor air outlet are all located on the side of the box body facing the back of the fresh air device, and the indoor air outlet is located on the side of the box body facing the side of the fresh air device; wherein, the first indoor air inlet and the second indoor air inlet are arranged adjacent to each other; the first outdoor air inlet and the second outdoor air inlet are arranged adjacent to each other and are correspondingly located below the first indoor air inlet and the second indoor air inlet; the first indoor air outlet and the second indoor air outlet are arranged adjacent to each other; the cross-section of the turntable channel is circular, and the turntable body has a circular structure matching the cross-section of the turntable channel; a body gear is arranged along the circumference of the turntable body; the driving device is fixed to the turntable support and includes a driving motor and a driving gear rotatably connected to the driving motor, and the driving gear meshes with the body gear.

4. The fresh air device according to claim 3, wherein: The cross-sections of the first turntable channel and the second turntable channel are both fan-shaped, and the cross-sectional area of the first turntable channel is larger than the cross-sectional area of the second turntable channel.

5. The fresh air device according to claim 4, characterized in that: The heater has the same shape as the cross-section of the second turntable channel.

6. The fresh air device according to claim 2, characterized in that: The first air duct volute includes a first air guide ring, a first centrifugal fan, and a first fan motor; the first air guide ring is fixed to the turntable support, has a hollow structure, and is provided with a first air guide inlet and a first air guide outlet; the first fan motor is fixedly arranged in the first air guide ring, the first centrifugal fan is fixedly connected to the first fan motor, and rotates around the axis under the drive of the first fan motor; The second air duct volute includes a second air guide ring, a second centrifugal fan, and a second fan motor; the second air guide ring is fixedly connected to the turntable support and the inner side of the box body, has a hollow structure, and is provided with a second air guide inlet and a second air guide outlet; the second fan motor is fixedly arranged in the second air guide ring, the second centrifugal fan is fixedly connected to the second fan motor, and rotates around the axis under the drive of the first fan motor.

7. The fresh air device according to claim 2, characterized in that: The box body includes a first box board and a second box board which are detachably fixed, wherein the first box board is arranged facing the front of the fresh air device and is provided with a maintenance window therethrough; the first filter screen and the second filter screen are integrally fixed HEPA filter screens, which are detachably fixed in the box body and can be movably passed through the maintenance window.

8. An indoor unit of an air conditioner, characterized in that: It includes an indoor unit body and the fresh air device according to any one of claims 1-7; the indoor unit body includes a housing, a receiving cavity is provided inside the housing, and the fresh air device is arranged in the receiving cavity; the housing is provided with a side air outlet and a back air outlet, the side air outlet is communicated with the indoor air outlet of the fresh air device, and the back air outlet is communicated with the indoor air inlet, the outdoor air inlet and the outdoor air outlet of the fresh air device.

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