Fresh air device and air conditioner having the same

Abstract

The present invention provides a fresh air device and an air conditioner having the same, which relates to the technical field of air conditioning equipment, and aims to solve the problem of complex structure of the existing double-pipe air inlet and exhaust structure for introducing fresh air and exhausting dirty air. It includes a shell, a fan assembly and a valve assembly. The shell is provided with an air guide chamber and an air exchange channel. The air exchange channel has a first air outlet, and the air guide chamber has a second air outlet. The fan assembly is arranged in the air exchange channel and has an air inlet side and an air outlet side. In the exhaust mode, the air exchange channel includes a dirty air inlet channel connecting the air guide chamber and the air inlet side, and a dirty air outlet channel connecting the air outlet side and the first air outlet. The valve assembly connects the air guide chamber and the dirty air inlet channel, and connects the dirty air outlet channel and the first air outlet. In the fresh air mode, the valve assembly connects the first air outlet and the air inlet side, and connects the air outlet side and the air guide chamber. The present invention utilizes the same first air outlet and second air outlet to achieve the purpose of both introducing fresh air into the room and exhausting indoor air, and has a simple structure.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to a fresh air device and an air conditioner having the same. Background Art

[0002] Currently, some air conditioners are equipped with fresh air devices to supply fresh air to the room, reducing air stagnation and improving the user experience. Existing fresh air devices come in either single-pipe or dual-pipe configurations. Single-pipe configurations are unable to exhaust polluted air, making the air heavy and uncomfortable when carbon dioxide concentrations are too high. Dual-pipe configurations often require an additional pipe and connection, which not only complicates the structure and increases costs, but also requires an additional wall hole during after-sales installation, forcing users to pay for an additional hole, further increasing installation costs.

[0003] However, if it involves a structure that both takes in fresh air and exhausts sewage air through a single pipe, although the technical problem of not needing to drill an extra hole is overcome, the flow channel structure inside the fresh air device will become extremely complicated, causing difficulties for the feasibility and reliability of the structure. Summary of the Invention

[0004] The first object of the present invention is to provide a fresh air device to solve the technical problem of complex structure of the existing double-pipe air intake and exhaust structure for introducing fresh air and exhausting polluted air.

[0005] The fresh air device provided by the present invention includes a shell, a fan assembly and a valve assembly, the shell is provided with an air guide chamber and an air exchange channel connected to the air guide chamber, the air exchange channel has a first air outlet connected to the outside, and the air guide chamber has a second air outlet connected to the room; the fan assembly is arranged in the air exchange channel, and the fan assembly has an air inlet side and an air outlet side; the valve assembly is movably arranged in the air exchange channel, for switching the air exchange channel between a fresh air mode and an exhaust mode; in the exhaust mode, the air exchange channel includes a sewage air inlet channel connected between the air guide chamber and the air inlet side, and a sewage air outlet channel connected between the air outlet side and the first air outlet; the valve assembly connects the air guide chamber and the sewage air inlet channel, and connects the sewage air outlet channel and the first air outlet, so that the airflow in the air guide chamber is discharged to the outside through the first air outlet; in the fresh air mode, the valve assembly connects the first air outlet and the air inlet side, and connects the air outlet side and the air guide chamber.

[0006] When fresh air needs to be introduced into the room, the valve assembly connects the first air outlet and the air inlet side, and connects the air outlet side and the air guide cavity, so that outdoor air can enter through the first air outlet and flow to the air inlet side under the action of the fan assembly, and flow to the air guide cavity through the air outlet side, and then enter the room through the second air outlet, thereby achieving the purpose of supplying fresh air to the room; when indoor air needs to be discharged to the outside, the valve assembly connects the air guide cavity and the sewage air inlet channel, and connects the sewage air channel and the first air outlet, so that indoor air can enter the air guide cavity through the second air outlet under the action of the fan assembly, and flow along the sewage air inlet channel to the air inlet side, and then flow out from the air outlet side, so as to flow to the first air outlet through the sewage air channel and be discharged to the outside, thereby achieving the purpose of discharging indoor air to the outside, so as to prevent the indoor carbon dioxide concentration from being too high. This type of fresh air device uses the same first air outlet and second air outlet to achieve the purpose of both introducing fresh air into the room and exhausting indoor air to the outside. There is no need to add additional pipes and corresponding connection structures, nor is there a need to add additional wall holes during after-sales installation. This not only simplifies the structure of the fresh air device and reduces the structural cost, but also reduces the after-sales installation cost.

[0007] In the above process, the fresh air device sets a waste air inlet channel between the air guide chamber and the air inlet side of the fan assembly, and uses the waste air inlet channel to directly connect the air guide chamber and the air inlet side, so that the indoor air entering the air guide chamber can be introduced into the air inlet side and enter from the air inlet side. There is no need to set a complex valve structure on the volute of the fan assembly, and to control the opening or closing of the valve structure to achieve the introduction of indoor air to the air inlet side. This not only ensures the sealing of the overall structure of the volute, thereby effectively avoiding the air leakage caused by the valve structure set on the volute, but also reduces the number of valves set, simplifies the structure of the fresh air device, and improves the working reliability of the fresh air device. In addition, the waste air inlet channel added between the air guide chamber and the air inlet side also increases the number and volume of cavities between the second air port and the air inlet side, thereby effectively ensuring the air intake in the exhaust mode. In addition, since the design of this solution does not require processing and improvement of the volute, it also reduces the manufacturing cost.

[0008] Furthermore, the direction in which the waste air inlet duct extends is substantially parallel to the radial direction of the impeller of the fan assembly. This arrangement effectively shortens the length of the waste air inlet duct, thereby shortening the flow path of indoor air from the air guide cavity to the air inlet side, thereby improving exhaust efficiency while also reducing the space occupied by the interior of the housing.

[0009] Furthermore, the channel wall on one side of the sewage air inlet channel is formed by the volute of the fan assembly. This arrangement allows indoor air to flow along the volute of the fan assembly toward the air inlet side after entering the sewage air inlet channel through the air guide cavity, thus guiding the sewage air in the sewage air inlet channel to a certain extent and saving piping materials.

[0010] Furthermore, the fresh air device further includes a filter assembly disposed within the air exchange duct, the filter assembly being spaced from and opposite the air inlet side, with the waste air inlet duct located between the filter assembly and the air inlet side. This arrangement forms a waste air inlet duct within the air exchange duct without requiring additional physical piping, thereby saving space within the housing and reducing the manufacturing cost of the fresh air device.

[0011] Furthermore, a sewage exhaust duct is provided inside the housing, and the lumen of the sewage exhaust duct forms the sewage exhaust passage. This arrangement makes the sewage exhaust passage independent from other passages inside the housing, thereby preventing interference between the indoor air inlet and outlet processes.

[0012] Furthermore, a dirty air inlet is provided on the wall of the air guide cavity adjacent to the air exchange channel. The dirty air inlet forms the entrance to the dirty air inlet channel, and along a set direction, the dirty air inlet is at least partially offset from the dirty air exhaust duct, wherein the set direction is perpendicular to the extension direction of the dirty air inlet duct and the flow direction of the airflow in the dirty air exhaust duct. This arrangement creates an air inlet gap between the outer contour of the dirty air exhaust duct and the dirty air inlet, which helps reduce the resistance of the dirty air flowing into the dirty air inlet channel when it is sucked into the fan assembly. This ensures smooth exhaust while also reducing the load on the fan assembly.

[0013] Furthermore, the polluted air inlet has a first edge and a second edge that are opposite and spaced apart along the set direction, and the polluted air exhaust duct has a first tube wall and a second tube wall that are opposite and spaced apart along the set direction. Projected along the extension direction of the polluted air inlet channel, the polluted air inlet and the polluted air exhaust duct are opposite each other, and air inlet gaps are formed between the first edge and the first tube wall, and between the second edge and the second tube wall. This arrangement allows polluted air to pass through both sides of the polluted air exhaust duct along the set direction, thereby improving the uniformity of the airflow rate and pressure on the air inlet side of the fan assembly, which is conducive to improving the operating efficiency of the fan assembly.

[0014] Furthermore, in the fresh air mode, the air exchange channel includes a fresh air inlet channel connected between the first air outlet and the air inlet side, and a fresh air outlet channel connected between the air outlet side and the air guide cavity. The valve assembly connects the first air outlet with the fresh air inlet channel, and connects the fresh air outlet channel with the air guide cavity. This arrangement allows outdoor air to enter the fresh air inlet channel through the first air outlet, flow from the air inlet side of the fan assembly to its air outlet side, and then enter the air guide cavity through the fresh air outlet channel, and finally be discharged into the room through the second air outlet, thereby achieving the purpose of introducing fresh air into the room.

[0015] Furthermore, the valve assembly includes a first valve, which is movably connected to the housing; in the exhaust mode, the first valve connects the exhaust air channel with the first air outlet and blocks the first air outlet from the fresh air inlet channel; the first valve is provided with an arc-shaped guide surface on a side facing the exhaust air channel, with a recessed portion of the arc-shaped guide surface facing the exhaust air channel; in the fresh air mode, the first valve connects the first air outlet and the fresh air inlet channel and blocks the exhaust air channel from the first air outlet. This arrangement can guide the airflow in the exhaust air channel, allowing the airflow in the exhaust air channel to flow smoothly to the first air outlet, effectively reducing resistance during the exhaust process and improving the smoothness of the exhaust process.

[0016] Furthermore, the valve assembly also includes a second valve, which is movably connected to the shell; in the exhaust mode, the second valve connects the air guide cavity with the sewage air inlet channel, blocks the fresh air exhaust channel from the air guide cavity, and connects the air outlet side with the sewage air exhaust channel; in the fresh air mode, the second valve blocks the air guide cavity with the sewage air inlet channel, connects the fresh air exhaust channel with the air guide cavity, and blocks the air outlet side with the sewage air exhaust channel. This arrangement allows only one second valve to be used to manage the opening or closing of the sewage air inlet channel from the air guide cavity to the air inlet side, the fresh air exhaust channel from the air outlet side to the air guide cavity, and the sewage air exhaust channel from the air outlet side to the first air outlet. The valve structure is simple and the reliability is high.

[0017] The second object of the present invention is to provide an air conditioner to solve the technical problem of the complex structure of the existing double-pipe air intake and exhaust structure for introducing fresh air and exhausting polluted air.

[0018] The air conditioner provided by the present invention includes an air conditioner indoor unit and an air conditioner outdoor unit. The air conditioner outdoor unit is connected to the air conditioner indoor unit through a refrigerant pipeline. The air conditioner indoor unit includes a body and the above-mentioned fresh air device. The body has a accommodating cavity, and the fresh air device is installed in the accommodating cavity.

[0019] By arranging the above-mentioned fresh air device in the indoor unit of the air conditioner, the air conditioner accordingly has all the advantages of the above-mentioned fresh air device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 A side structural cross-section of the fresh air device provided in the embodiment of the present invention in the exhaust mode Figure 1 ;

[0022] Figure 2 A side structural cross-section of the fresh air device provided in the embodiment of the present invention in the exhaust mode Figure 2 ;

[0023] Figure 3 A side structural cross-sectional view of the fresh air device provided by an embodiment of the present invention in fresh air mode;

[0024] Figure 4 A top view of the structure of a fresh air device provided by an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the main structure of an air conditioner indoor unit provided by an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 010-Fresh air device; 020-Body; 030-Fresh air duct; 040-Wall; 100-Casing; 200-Fan assembly; 300-Valve assembly; 400-Filter assembly; 500-Sewage exhaust duct; 110-Air guide cavity; 120-Air exchange channel; 130-First air outlet; 140-Second air outlet; 150-Partition; 160-Sewage air inlet; 170-Fresh air inlet ;121-sewage air inlet channel;122-sewage air exhaust channel;123-fresh air inlet channel;124-fresh air exhaust channel;161-first edge;162-second edge;210-air inlet side;220-air outlet side;230-impeller;240-volute;310-first valve;311-arc-shaped guide surface;320-second valve;510-first pipe wall;520-second pipe wall. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] Figure 1 The side view of the fresh air device 010 provided in this embodiment in the exhaust mode Figure 1 .like Figure 1As shown, this embodiment provides a fresh air device 010, including a shell 100, a fan assembly 200 and a valve assembly 300. Specifically, the shell 100 is provided with an air guide cavity 110 and an air exchange channel 120 connected to the air guide cavity 110, the air exchange channel 120 is provided with a first air outlet 130 connected to the outdoors, and the air guide cavity 110 is provided with a second air outlet 140 connected to the indoors; the fan assembly 200 is provided in the air exchange channel 120, and the fan assembly 200 has an air inlet side 210 and an air outlet side 220; the valve assembly 300 is movably provided in the air exchange channel 120, for switching the air exchange channel 120 between a fresh air mode and an exhaust mode.

[0030] Figure 2 The side view of the fresh air device 010 provided in this embodiment in the exhaust mode Figure 2 Please continue to refer to Figure 1 , and combined with Figure 2 In the exhaust mode, the air exchange channel 120 includes a sewage air inlet channel 121 connected between the air guide chamber 110 and the air inlet side 210, and a sewage air outlet channel 122 connected between the air outlet side 220 and the first air outlet 130; the valve assembly 300 connects the air guide chamber 110 with the sewage air inlet channel 121, and connects the sewage air outlet channel 122 with the first air outlet 130, so that the airflow in the air guide chamber 110 is discharged to the outside through the first air outlet 130.

[0031] Figure 3 This is a side structural cross-sectional view of the fresh air device 010 provided in this embodiment in the fresh air mode. Figure 3 As shown, in the fresh air mode, the valve assembly 300 connects the first air port 130 with the air inlet side 210 , and connects the air outlet side 220 with the air guide cavity 110 .

[0032] When fresh air needs to be introduced into the room, the valve assembly 300 connects the first air vent 130 with the air inlet side 210, and connects the air outlet side 220 with the air guide cavity 110, so that outdoor air can enter through the first air vent 130 and flow toward the air inlet side 210 under the action of the fan assembly 200, and flow to the air guide cavity 110 through the air outlet side 220, and then enter the room through the second air vent 140, thereby achieving the purpose of supplying fresh air to the room; when the indoor air needs to be discharged to the outside, the valve assembly 300 is closed. The air guide cavity 110 is connected to the sewage air inlet duct 121, and the sewage air outlet duct 122 is connected to the first air outlet 130. This allows indoor air to enter the air guide cavity 110 through the second air outlet 140 under the action of the fan assembly 200, flow along the sewage air inlet duct 121 to the air inlet side 210, and then flow out from the air outlet side 220 to flow through the sewage air outlet duct 122 to the first air outlet 130 and be discharged outdoors, thereby achieving the purpose of exhausting indoor air to the outdoors to prevent the indoor carbon dioxide concentration from being too high. This arrangement of the fresh air device 010, using the same first air outlet 130 and second air outlet 140, can achieve the purpose of both introducing fresh air into the room and exhausting indoor air to the outdoors, without the need for additional piping and corresponding connection structures, nor the need for additional wall holes during after-sales installation. This not only simplifies the structure of the fresh air device 010 and reduces the structural cost, but also reduces the after-sales installation cost.

[0033] In the above process, the fresh air device 010 sets a sewage air inlet channel 121 between the air guide chamber 110 and the air inlet side 210 of the fan assembly 200, and uses the sewage air inlet channel 121 to directly connect the air guide chamber 110 and the air inlet side 210, so that the indoor air entering the air guide chamber 110 can be introduced into the air inlet side 210 and enter from the air inlet side 210. There is no need to set a complex valve structure on the volute 240 of the fan assembly 200, and to achieve the introduction of indoor air to the air inlet side 210 by controlling the opening or closing of the valve structure. This not only ensures the sealing of the overall structure of the volute 240, thereby effectively avoiding air leakage caused by the valve structure set in the volute 240, but also reduces the number of valve settings, simplifies the structure of the fresh air device 010, and improves the working reliability of the fresh air device 010. Furthermore, the addition of the waste air inlet channel 121 between the air guide cavity 110 and the air inlet side 210 increases the number and volume of cavities between the second air outlet 140 and the air inlet side 210, thereby effectively ensuring the air intake in the exhaust mode. Furthermore, since this design does not require any processing modifications to the volute 240, manufacturing costs are reduced.

[0034] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the extension direction of the sewage air inlet channel 121 is substantially parallel to the radial direction of the impeller 230 of the fan assembly 200 .

[0035] This setting can effectively shorten the length of the dirty air inlet channel 121, so as to shorten the flow path of the indoor air from the air guide cavity 110 to the air inlet side 210. On the one hand, it enables the indoor air to flow to the air inlet side 210 of the fan assembly 200 in a timely manner, thereby improving the exhaust efficiency. On the other hand, it can also reduce the occupation of the internal space of the shell 100 by the dirty air inlet channel 121.

[0036] It should be noted that the above-mentioned "the extension direction of the sewage air inlet channel 121 is basically parallel to the radial direction of the impeller 230 of the fan assembly 200" includes both the situation that the extension direction of the sewage air inlet channel 121 is parallel to the radial direction of the impeller 230 of the fan assembly 200, and the situation that the extension direction of the sewage air inlet channel 121 is at a certain angle to the radial direction of the impeller 230 of the fan assembly 200, and the angle can be between -5° and 5°.

[0037] In other embodiments, the sewage air inlet channel 121 may be configured to be inclined. In this case, the extension direction of the sewage air inlet channel 121 forms an angle with the radial direction of the impeller 230 of the fan assembly 200. This configuration can also guide the indoor air entering the air guide cavity 110 to the air inlet side 210 of the fan assembly 200, thereby achieving the purpose of exhausting the indoor air to the outside.

[0038] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the channel wall on one side of the sewage air inlet channel 121 is formed by the volute 240 of the fan assembly 200.

[0039] This setting of the sewage air inlet channel 121, on the one hand, allows the indoor air to enter the sewage air inlet channel 121 through the air guide chamber 110, and then flow along the volute 240 of the fan assembly 200 to its air inlet side 210, which plays a certain guiding role for the sewage air in the sewage air inlet channel 121, and ensures the smooth flow of the sewage air from the air guide chamber 110 to the air inlet side 210. On the other hand, by using the volute 240 to form the channel wall on one side of the sewage air inlet channel 121, it can save pipeline materials, which not only reduces the cost of the fresh air device, but also reduces the occupation of the internal space of the shell 100 while ensuring that the air intake volume remains unchanged.

[0040] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the fresh air device 010 may further include a filter assembly 400. Specifically, the filter assembly 400 is arranged in the air exchange channel 120. The filter assembly 400 is opposite to and spaced from the air inlet side 210. The sewage air inlet channel 121 is located between the filter assembly 400 and the air inlet side 210.

[0041] This arrangement utilizes the space between the filter assembly 400 and the air inlet side 210 to form the waste air inlet channel 121. On the one hand, the waste air inlet channel 121 is limited between the air inlet side 210 and the filter assembly 400. While ensuring the air intake volume in the exhaust mode, it can also avoid the increase in the load of the fan assembly 200 caused by excessive opening of the waste air inlet channel 121. On the other hand, the waste air inlet channel 121 is formed in the air exchange channel 120 without the need for additional physical pipelines, which saves space inside the shell 100 and reduces the manufacturing cost of the fresh air device 010.

[0042] In other embodiments, a physical pipeline connecting the air guide cavity 110 and the air inlet side 210 can be set inside the shell 100, and the pipe cavity of the physical pipeline can be used to form a dirty air inlet channel 121. This setting can also guide the indoor air entering the air guide cavity 110 to the air inlet side 210 of the fan assembly 200.

[0043] Figure 4 This is a top view of the structure of the fresh air device 010 provided in this embodiment. Figure 1 and Figure 2 , and combined with Figure 4 In this embodiment, a sewage exhaust duct 500 is provided inside the housing 100 . Specifically, the lumen of the sewage exhaust duct 500 forms a sewage exhaust passage 122 .

[0044] This arrangement of using the lumen of a physical pipeline to form the exhaust air channel 122 makes the exhaust air channel 122 independent of other channels inside the shell 100 (such as the exhaust air channel 121), effectively preventing mutual interference between the indoor air during the entry and discharge processes, and ensuring the smooth flow of indoor air from the air guide cavity 110 to the air inlet side 210 and the smooth flow of indoor air from the air outlet side 220 to the first air outlet 130.

[0045] Please continue to refer to Figure 4 In this embodiment, a dirty air inlet 160 is opened on the cavity wall of the air guide cavity 110 adjacent to the air exchange channel 120. The dirty air inlet 160 forms the channel entrance of the dirty air inlet channel 121, and along the set direction, the dirty air inlet 160 is at least partially staggered with the dirty air exhaust duct 500, wherein the set direction is perpendicular to the extension direction of the dirty air inlet duct and the flow direction of the airflow in the dirty air exhaust duct 500.

[0046] Figure 4In the figure, the direction indicated by arrows ab is the set direction. That is, the phrase "along the set direction, the dirty air inlet 160 is at least partially offset from the dirty air exhaust duct 500" means that, at the location of the dirty air inlet 160, along the extension direction of the dirty air inlet channel 121, the dirty air inlet 160 does not completely overlap with the dirty air exhaust duct 500, thereby creating an air intake gap between the dirty air inlet 160 and the dirty air exhaust duct 500.

[0047] The above-mentioned arrangement enables the indoor air to enter the sewage air inlet channel 121 through the sewage air inlet port 160 after entering the air guide cavity 110 through the second air outlet 140. Moreover, by setting the sewage air inlet port 160 to be at least partially offset from the sewage exhaust duct 500 along the set direction, an air inlet gap is created between the outer contour of the sewage exhaust duct 500 and the sewage air inlet port 160. This is beneficial to reducing the resistance of the sewage air in the process of flowing toward the sewage air inlet channel 121 when being sucked into the fan assembly 200, thereby reducing the load of the fan assembly 200 while ensuring the smoothness of the exhaust.

[0048] It should be noted that, in this embodiment, a partition 150 is provided inside the housing 100 , and the partition 150 divides the internal space of the housing 100 into an air guide cavity 110 and an air exchange passage 120 , and the dirty air inlet 160 is opened on the partition 150 .

[0049] Please continue to refer to Figure 4 In this embodiment, the dirty air inlet 160 has a first edge 161 and a second edge 162 that are opposite and spaced apart along a set direction, and the sewage exhaust duct 500 has a first tube wall 510 and a second tube wall 520 that are opposite and spaced apart along a set direction. Projected along the extension direction of the sewage air inlet channel 121, the dirty air inlet 160 is opposite to the sewage exhaust duct 500, and an air inlet gap is formed between the first edge 161 and the first tube wall 510 and between the second edge 162 and the second tube wall 520.

[0050] This arrangement forms air inlet gaps between the first edge 161 and the first tube wall 510 and between the second edge 162 and the second tube wall 520, so that dirty air can pass through both sides of the exhaust air duct 500 along the set direction, thereby improving the uniformity of the air flow rate and pressure on the air inlet side 210 of the fan assembly 200, which is beneficial to improving the operating efficiency of the fan assembly 200.

[0051] It should be noted that Figure 1 and Figure 2 In the figure, the airflow path shown by the dotted line indicates that this section is blocked by the sewage duct 500, specifically, blocked by the first pipe wall 510 of the sewage duct 500; and the airflow entering through the second pipe wall 520 of the sewage duct 500, due to Figure 1 and Figure 2 It is not shown for the purpose of illustrating a side cross-section.

[0052] Please continue to refer to Figures 1 to 3 In this embodiment, the air exchange channel 120 is located below the air guide cavity 110. This arrangement places the second air outlet 140 relatively high, so that in fresh air mode, the fresh air entering through the second air outlet 140 does not get too close to the ground, thus preventing dust from being blown up.

[0053] Please continue to refer to Figure 3 In this embodiment, in fresh air mode, the air exchange duct 120 includes a fresh air inlet duct 123 connected between the first air outlet 130 and the air inlet side 210, and a fresh air outlet duct 124 connected between the air outlet side 220 and the air guide cavity 110. The valve assembly 300 connects the first air outlet 130 with the fresh air inlet duct 123 and connects the fresh air outlet duct 124 with the air guide cavity 110. The partition 150 also defines a fresh air inlet 170, through which the fresh air outlet duct 124 communicates with the air guide cavity 110.

[0054] This setting allows outdoor air to enter the fresh air inlet channel 123 through the first air outlet 130 in the fresh air mode, and flow from the air inlet side 210 of the fan assembly 200 to its air outlet side 220, and then enter the air guide cavity 110 through the fresh air exhaust channel 124, and finally be discharged into the room through the second air outlet 140, thereby achieving the purpose of introducing fresh air into the room.

[0055] In addition, in the exhaust mode, the valve assembly 300 blocks the first air outlet 130 from the fresh air inlet channel 123 , and blocks the fresh air outlet channel 124 from the air guide cavity 110 .

[0056] In this embodiment, the valve assembly 300 is disposed between the first air vent 130 and the fresh air inlet duct 123, and between the fresh air exhaust duct 124 and the air guide cavity 110. The valve assembly 300 controls the connection or blockage between the first air vent 130 and the fresh air inlet duct 123, and controls the connection or blockage between the fresh air exhaust duct 124 and the air guide cavity 110. This allows the air inlet side 210 to maintain communication with both the fresh air inlet duct 123 and the sewage air inlet duct 121, and the air outlet side 220 to maintain communication with both the fresh air exhaust duct 124 and the sewage air exhaust duct 122. This effectively utilizes the ventilation area of ​​the air inlet side 210 and the air outlet side 220 of the fan assembly 200 and fully utilizes the power of the fan assembly 200. The arrangement of the valve assembly 300 controls the connection between the corresponding air vents, ducts, and the air inlet side 210 and the air outlet side 220 in the fresh air mode and the exhaust mode, respectively. The control in the two modes does not interfere with each other, thereby improving control flexibility.

[0057] Please continue to refer to Figures 1 to 3In this embodiment, the valve assembly 300 may include a first valve 310, which is movably connected to the housing 100. In exhaust mode, the first valve 310 connects the waste air passage 122 with the first air outlet 130 and blocks the first air outlet 130 from the fresh air inlet 123. A curved guide surface 311 is provided on a side of the first valve 310 facing the waste air passage 122, with a recessed portion of the curved guide surface 311 facing the waste air passage 122. In fresh air mode, the first valve 310 connects the first air outlet 130 with the fresh air inlet 123 and blocks the waste air passage 122 from the first air outlet 130.

[0058] By setting an arc-shaped guide surface 311 on the first valve 310, the airflow in the sewage exhaust air channel 122 can be guided, so that the airflow in the sewage exhaust air channel 122 can flow smoothly to the first air outlet 130, effectively reducing the resistance during the exhaust process and improving the smoothness of the exhaust process.

[0059] Please continue to refer to Figures 1 to 3 In this embodiment, the valve assembly 300 may further include a second valve 320 movably connected to the housing 100. In exhaust mode, the second valve 320 connects the air guide cavity 110 with the waste air inlet passage 121, blocks the fresh air exhaust passage 124 from the air guide cavity 110, and connects the air outlet side 220 with the waste air exhaust passage 122. In fresh air mode, the second valve 320 blocks the air guide cavity 110 from the waste air inlet passage 121, connects the fresh air exhaust passage 124 from the air guide cavity 110, and blocks the air outlet side 220 from the waste air exhaust passage 122.

[0060] The above-mentioned setting of the fresh air device 010 can not only use the same first air outlet 130 and second air outlet 140 to discharge indoor air to the outside and introduce outdoor fresh air into the room, thereby reducing the indoor carbon dioxide concentration and improving comfort, but also, only using one second valve 320, it can realize the management of opening or closing of the three channels: the sewage air inlet channel 121 from the air guide chamber 110 to the air inlet side 210, the fresh air exhaust channel 124 from the air outlet side 220 to the air guide chamber 110, and the sewage air exhaust channel 122 from the air outlet side 220 to the first air outlet 130. The valve structure is simple and the reliability is high.

[0061] This embodiment further provides an air conditioner, including an air conditioner indoor unit and an air conditioner outdoor unit, wherein the air conditioner outdoor unit is connected to the air conditioner indoor unit via a refrigerant pipeline.

[0062] Figure 5 The main structure diagram of the indoor unit of the air conditioner provided in this embodiment is shown in FIG. Figure 5 As shown, the air conditioner indoor unit includes a body 020 and the above-mentioned fresh air device 010. Specifically, the body 020 is provided with a accommodating cavity, and the fresh air device 010 is installed in the accommodating cavity.

[0063] By setting the above-mentioned fresh air device 010 in the indoor unit of the air conditioner, the air conditioner accordingly has all the advantages of the above-mentioned fresh air device 010, which will not be described in detail here.

[0064] Please continue to refer to Figure 5 In this embodiment, the air conditioner indoor unit may further include a fresh air duct 030, wherein one end of the fresh air duct 030 is connected to the first air outlet 130 of the fresh air device 010 (see Figures 1 to 3 ), the other end of the fresh air duct 030 is passed through the wall 040.

[0065] In this embodiment, the air-conditioning indoor unit is a cabinet air-conditioning unit.

[0066] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

[0067] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0068] In the above embodiments, the descriptions of directions such as “inside”, “outside”, “upper”, “lower”, and “side” are all based on the drawings.

[0069] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fresh air device, characterized in that: The invention comprises a housing (100), a fan assembly (200) and a valve assembly (300); the housing (100) is provided with an air guide cavity (110) and an air exchange channel (120) connected to the air guide cavity (110); the air exchange channel (120) is provided with a first air outlet (130) connected to the outside of the room; the air guide cavity (110) is provided with a second air outlet (140) connected to the room; the fan assembly (200) is provided in the air exchange channel (120), and the fan assembly (200) has an air inlet side (210) and an air outlet side (220); the valve assembly (300) is movably provided in the air exchange channel (120) and is used to switch the air exchange channel (120) between a fresh air mode and an exhaust air mode; In the exhaust mode, the air exchange channel (120) includes a sewage air inlet channel (121) connected between the air guide cavity (110) and the air inlet side (210), and a sewage air outlet channel (122) connected between the air outlet side (220) and the first air outlet (130); the valve assembly (300) connects the air guide cavity (110) and the sewage air inlet channel (121), and connects the sewage air outlet channel (122) and the first air outlet (130), so that the air flow in the air guide cavity (110) is discharged to the outside through the first air outlet (130); the channel wall on one side of the sewage air inlet channel (121) is formed by the volute (240) of the fan assembly (200); a sewage air outlet duct (500) is provided inside the housing (100), and the tube cavity of the sewage air outlet duct (500) forms the sewage air outlet channel (122); In the fresh air mode, the valve assembly (300) connects the first air port (130) with the air inlet side (210), and connects the air outlet side (220) with the air guide cavity (110).

2. The fresh air device according to claim 1, characterized in that: The extension direction of the sewage air inlet channel (121) is substantially parallel to the radial direction of the impeller (230) of the fan assembly (200).

3. The fresh air device according to claim 1, characterized in that: The fresh air device further comprises a filter assembly (400), the filter assembly (400) being arranged in the air exchange channel (120), the filter assembly (400) being opposite to and spaced from the air inlet side (210), and the dirty air inlet channel (121) being located between the filter assembly (400) and the air inlet side (210).

4. The fresh air device according to claim 1, characterized in that: A dirty air inlet (160) is provided on a cavity wall of the air guide cavity (110) adjacent to the air exchange channel (120), and the dirty air inlet (160) forms a channel entrance of the dirty air inlet channel (121), and along a set direction, the dirty air inlet (160) is at least partially offset from the dirty air exhaust duct (500), wherein the set direction is perpendicular to the extension direction of the dirty air inlet channel (121) and the flow direction of the airflow in the dirty air exhaust duct (500).

5. The fresh air device according to claim 4, characterized in that: The dirty air inlet (160) has a first edge (161) and a second edge (162) that are opposite and spaced apart along the set direction, and the sewage exhaust duct (500) has a first tube wall (510) and a second tube wall (520) that are opposite and spaced apart along the set direction. Projected along the extension direction of the sewage air inlet channel (121), the dirty air inlet (160) is opposite to the sewage exhaust duct (500), and an air inlet gap is formed between the first edge (161) and the first tube wall (510) and between the second edge (162) and the second tube wall (520).

6. The fresh air device according to any one of claims 1 to 5, characterized in that: In the fresh air mode, the air exchange channel (120) includes a fresh air inlet channel (123) connected between the first air outlet (130) and the air inlet side (210), and a fresh air outlet channel (124) connected between the air outlet side (220) and the air guide cavity (110), and the valve assembly (300) connects the first air outlet (130) and the fresh air inlet channel (123), and connects the fresh air outlet channel (124) and the air guide cavity (110).

7. The fresh air device according to claim 6, characterized in that: The valve assembly (300) includes a first valve (310), and the first valve (310) is movably connected to the housing (100); in the exhaust mode, the first valve (310) connects the sewage exhaust air channel (122) and the first air outlet (130), and blocks the first air outlet (130) and the fresh air inlet channel (123); the first valve (310) is provided with an arc-shaped guide surface (311) on a side facing the sewage exhaust air channel (122), and the recessed portion of the arc-shaped guide surface (311) faces the sewage exhaust air channel (122); in the fresh air mode, the first valve (310) connects the first air outlet (130) and the fresh air inlet channel (123), and blocks the sewage exhaust air channel (122) and the first air outlet (130).

8. The fresh air device according to claim 6, characterized in that: The valve assembly (300) further includes a second valve (320), which is movably connected to the housing (100); in the exhaust mode, the second valve (320) connects the air guide cavity (110) with the sewage air inlet channel (121), blocks the fresh air exhaust channel (124) from the air guide cavity (110), and connects the air outlet side (220) with the sewage air exhaust channel (122); in the fresh air mode, the second valve (320) blocks the air guide cavity (110) with the sewage air inlet channel (121), connects the fresh air exhaust channel (124) with the air guide cavity (110), and blocks the air outlet side (220) from the sewage air exhaust channel (122).

9. An air conditioner, characterized in that: The air conditioner comprises an indoor air conditioner and an outdoor air conditioner, wherein the outdoor air conditioner is connected to the indoor air conditioner via a refrigerant pipeline, and the indoor air conditioner comprises a body (020) and a fresh air device according to any one of claims 1 to 8, wherein the body (020) is provided with a receiving cavity, and the fresh air device is installed in the receiving cavity.

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