Fresh air device and air conditioning cabinet having the same

Abstract

The present invention provides a fresh air device and an air conditioning cabinet equipped with the same, which relates to the technical field of air conditioners. In order to solve the problem that the existing fresh air device requires different valves to open or close different air flow channels in order to achieve the exhaust function, resulting in a complex valve structure and low reliability. The fresh air device includes a shell, a fan assembly and a first valve. The shell is provided with an exhaust port and a first air port. The exhaust port is connected to the indoor room, and the first air port is connected to the outdoor room. The fan assembly is arranged in the inner cavity of the shell. The fan assembly has an air inlet side and an air outlet side. The first valve has an exhaust state for exhausting indoor air through the first air port. In the exhaust state, the first valve opens the exhaust port to connect the indoor room with the air inlet side, closes the air flow channel from the air outlet side to the indoor room, and connects the sewage air channel from the air outlet side to the first air port. The present invention can realize the management of opening or closing different air flow channels by using the same valve, thereby simplifying the valve structure.

Description

Technical Field

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

[0002] Currently, some air conditioners are equipped with fresh air devices to supply fresh air to the interior, reducing air stagnation and improving the user experience. Furthermore, some fresh air devices also have exhaust ducts to dissipate indoor air to prevent excessive carbon dioxide concentrations that can lead to reduced comfort. However, existing fresh air devices require different valves to open and close different airflow channels to achieve this exhaust function, resulting in complex valve structures and low reliability. Summary of the Invention

[0003] The first purpose of the present invention is to provide a fresh air device to solve the technical problem that the existing fresh air device requires different valves to open or close different air flow channels to achieve the exhaust function, resulting in complex valve structure and low reliability.

[0004] The fresh air device provided by the present invention includes a shell, a fan assembly and a first valve. The shell is provided with an exhaust port and a first air port. The exhaust port is connected to the indoor room, and the first air port is connected to the outdoor room. The fan assembly is arranged in the inner cavity of the shell, and the fan assembly has an air inlet side and an air outlet side. The first valve has an exhaust state for discharging indoor air through the first air port. In the exhaust state, the first valve opens the exhaust port to connect the indoor room with the air inlet side, closes the air flow channel from the air outlet side to the indoor room, and connects the sewage air channel from the air outlet side to the first air port.

[0005] When it is necessary to use the fresh air device to exhaust the indoor air to the outdoors, the first valve can be switched to the exhaust state. At this time, the first valve opens the exhaust port to connect the indoor room with the air inlet side, closes the air flow channel from the air outlet side to the indoor room, and connects the sewage air channel from the air outlet side to the first air port, so that the indoor air can flow from the exhaust port to the air inlet side under the action of the fan assembly, and when the above air flows out from the air outlet side, it will not enter the room, but will flow to the first air port through the sewage air channel to be discharged to the outdoors.

[0006] The above-mentioned setting of the fresh air device can not only discharge indoor air to the outdoors, reduce the indoor carbon dioxide concentration and improve comfort, but also make the three channels from the exhaust port to the air inlet side, the air outlet side to the indoor room and the air outlet side to the first air outlet arranged adjacent to each other, so that the air flow channels of the fresh air device are arranged reasonably and compactly. Only by using the first valve in the exhaust state, the opening or closing of the three channels from the exhaust port to the air inlet side, the air outlet side to the indoor room and the air outlet side to the first air outlet can be managed. The design is ingenious, the valve structure is simple and the reliability is high.

[0007] Furthermore, the first valve also has a fresh air state for allowing outdoor air to enter the room. In this fresh air state, the first valve closes the exhaust port to block the indoor air from the air inlet side, opens the airflow path from the air outlet side to the indoor air, and closes the sewage air path. This configuration allows the first valve to still manage the opening or closing of the three channels: the exhaust port to the air inlet side, the air outlet side to the indoor air, and the air outlet side to the first air port, even when in the fresh air state, thereby satisfying the fresh air supply function of the fresh air device.

[0008] Furthermore, the inner cavity of the shell includes an air guide cavity and a receiving cavity separated by a partition, the cavity wall of the air guide cavity is provided with a second air outlet directly connected to the indoor room; the fan assembly is arranged in the receiving cavity, the exhaust air channel is formed in the receiving cavity, the first air outlet is provided in the cavity wall of the receiving cavity; the exhaust outlet is provided in the partition, and the partition is also provided with an air inlet. This arrangement of the fresh air device uses a partition to separate the inner cavity of the shell into an air guide cavity directly connected to the indoor room and a receiving cavity directly connected to the outdoor room, and by providing an exhaust outlet and an air inlet on the partition, it ensures that indoor air is discharged to the outdoor room and outdoor air is supplied to the indoor room, and has a simple structure.

[0009] Furthermore, the first valve is movably disposed on the partition, and includes a first valve body and a second valve body connected at an angle, with the second valve body facing the entrance of the exhaust air passage. In the exhaust state, the first valve body closes the air inlet and exposes the exhaust port, while the second valve body connects the air outlet side with the exhaust air passage. In the fresh air state, the first valve body exposes the air inlet and closes the exhaust port, while the second valve body blocks the air outlet side from the exhaust air passage. This arrangement of the first valve allows switching between the exhaust state and the fresh air state through a simple movement process, simplifying control.

[0010] Furthermore, the air inlet and the air outlet are arranged at intervals along the moving direction of the first valve. This arrangement is beneficial for reducing the width of the first valve body.

[0011] Furthermore, the first valve body is vertically connected to the second valve body, the second valve body being a plate-shaped structure, and the side of the second valve body facing the exhaust air passage is used to close the exhaust air passage. With this arrangement, when the first valve is moved to the fresh air state, the exhaust air passage can be closed using the side of the second valve body facing the exhaust air passage, resulting in a simple structure and reducing the cost of the first valve.

[0012] Furthermore, the exhaust air duct is partially recessed around its inlet, away from the second valve body, to form a mating stop. In the fresh air state, the second valve body is embedded in the mating stop. This arrangement allows the second valve body to form a labyrinthine groove seal at the exhaust air duct inlet by embedding with the mating stop after the fresh air is discharged from the air outlet side, thereby preventing fresh air from leaking into the exhaust air duct.

[0013] Furthermore, the second valve body includes a connecting edge and a sealing edge. The connecting edge is used to connect to the first valve body, and the sealing edge is provided with a rib running along its direction, and the rib is located on the side of the second valve body facing the exhaust air duct. The surface of the mating stop facing the second valve body forms a mating surface, and the mating surface is used to abut and mate with the rib. This arrangement only requires the abutment of the rib and the mating surface to achieve the purpose of sealing, which can reduce the processing precision requirements of the second valve body and improve the reliability of the line-surface sealing.

[0014] Furthermore, a groove is formed in the wall of the accommodating chamber, the groove being opposite to the entrance of the exhaust air passage. The side of the groove facing the exhaust air passage forms an accommodating portion, which is used to accommodate the second valve body in the exhaust state. This arrangement can accommodate the second valve body in the exhaust state, thereby forming a labyrinth groove sealing structure between the second valve body and the wall of the accommodating chamber, preventing indoor air discharged through the air outlet side from flowing back into the air guide chamber through the gap between the second valve body and the wall.

[0015] Furthermore, the fresh air device also includes a second valve, which is movably connected to the housing; in the exhaust state, the second valve connects the sewage exhaust passage and the first air outlet, and closes the fresh air inlet passage from the first air outlet to the air inlet side; in the fresh air state, the second valve connects the first air outlet and the air inlet side, and blocks the sewage exhaust passage and the first air outlet. This arrangement of the fresh air device utilizes the same first and second air outlets to achieve the purpose of both introducing fresh air into the room and exhausting indoor air to the outside, without the need for separate air inlet and exhaust ducts and corresponding connection structures, thereby simplifying the structure of the fresh air device and reducing the cost of the fresh air device.

[0016] The second purpose of the present invention is to provide an air-conditioning cabinet to solve the technical problem that the existing fresh air device requires different valves to open or close different air flow channels in order to achieve the exhaust function, resulting in complex valve structure and low reliability.

[0017] The air-conditioning cabinet provided by the present invention comprises a body and the above-mentioned fresh air device, wherein the body is provided with an installation cavity, and the installation cavity is used to accommodate the fresh air device.

[0018] By setting the above-mentioned fresh air device in the air-conditioning cabinet, the air-conditioning cabinet accordingly has all the advantages of the above-mentioned fresh air device, which will not be described one by one here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 A cross-sectional view of the structure of the fresh air device provided in Example 1 of the present invention when the first valve is in the exhaust state Figure 1 ;

[0021] Figure 2 for Figure 1 A magnified view of the local structure at point A;

[0022] Figure 3 A cross-sectional view of the structure of the fresh air device provided in Example 1 of the present invention when the first valve is in the exhaust state Figure 2 ;

[0023] Figure 4 A structural cross-sectional view of the fresh air device provided in Example 1 of the present invention when the first valve is in the fresh air state;

[0024] Figure 5 for Figure 4 A magnified view of the local structure at point B in the middle;

[0025] Figure 6 A structural cross-sectional view of the fresh air device provided in the second embodiment of the present invention when the first valve is in the exhaust state;

[0026] Figure 7 This is a schematic diagram of the main structure of the air-conditioning cabinet provided in Example 3 of the present invention.

[0027] Description of reference numerals:

[0028] 010-Fresh air device; 020-Body; 030-Fresh air duct; 040-Wall; 100-Casing; 200-Fan assembly; 300-First valve; 400-Second valve; 500-Filter component; 110-Air guide chamber; 111-Second air outlet; 120-Accommodation chamber; 121-First air outlet; 122-Sewage air inlet channel; 123-Sewage air outlet channel; 124-Groove; 125 -Fresh air exhaust channel; 126-Fresh air inlet channel; 127-Mating stop; 128-Mating surface; 130-Partition; 131-Exhaust port; 132-Air inlet; 210-Air inlet side; 220-Air outlet side; 310-First valve body; 320-Second valve body; 321-Connecting edge; 322-Sealing edge; 323-Rib; 324-Sealing piece; 325-Avoidance gap; 326-Guide surface. DETAILED DESCRIPTION

[0029] 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.

[0030] Example 1

[0031] Figure 1 This is a cross-sectional view of the structure of the fresh air device 010 provided in the first embodiment when the first valve 300 is in the exhaust state. Figure 1 , Figure 2 for Figure 1 A magnified view of the local structure at point A. Figure 3 This is a cross-sectional view of the structure of the fresh air device 010 provided in the first embodiment when the first valve 300 is in the exhaust state. Figure 2 .like Figures 1 to 3 As shown, this embodiment provides a fresh air device 010, including a housing 100, a fan assembly 200 and a first valve 300. Specifically, the housing 100 is provided with an exhaust port 131 and a first air port 121. The exhaust port 131 is connected to the indoor room, and the first air port 121 is connected to the outdoor room. The fan assembly 200 is arranged in the inner cavity of the housing 100. The fan assembly 200 has an air inlet side 210 and an air outlet side 220. The first valve 300 has an exhaust state for exhausting indoor air through the first air port 121. In the exhaust state, the first valve 300 opens the exhaust port 131 to connect the indoor room with the air inlet side 210, closes the air flow channel from the air outlet side 220 to the indoor room, and connects the sewage air channel 123 from the air outlet side 220 to the first air port 121. When the first valve 300 is in the exhaust state, the fresh air device 010 is in the exhaust mode. Figure 1 and Figure 3The arrow in the figure indicates the air flow path of the fresh air device 010 in the exhaust mode, and the air flow path shown by the dotted line indicates that this section is blocked by the sewage exhaust channel 123 between the air outlet side 220 and the first air outlet 121.

[0032] When it is necessary to use the fresh air device 010 to exhaust the indoor air to the outside, the first valve 300 can be switched to the exhaust state ( Figure 1 and Figure 3 At this time, the first valve 300 opens the exhaust port 131 to connect the indoor room with the air inlet side 210, closes the air flow channel from the air outlet side 220 to the indoor room, and connects the sewage air channel 123 from the air outlet side 220 to the first air port 121, so that the indoor air can flow from the exhaust port 131 to the air inlet side 210 under the action of the fan assembly 200, and when the above-mentioned air flows out from the air outlet side 220, it will not enter the room, but will flow to the first air port 121 through the sewage air channel 123 to be discharged to the outdoors.

[0033] The above-mentioned setting of the fresh air device 010 can not only discharge indoor air to the outdoors, reduce the carbon dioxide concentration in the room and improve comfort, but also make the three channels from the exhaust port 131 to the air inlet side 210, the air outlet side 220 to the room and the air outlet side 220 to the first air outlet 121 be arranged adjacent to each other, so that the various air flow channels of the fresh air device are arranged reasonably and compactly. Only by using the first valve 300 in the exhaust state, the opening or closing of the three channels from the exhaust port 131 to the air inlet side 210, the air outlet side 220 to the room and the air outlet side 220 to the first air outlet 121 can be managed. The design is ingenious, the valve structure is simple and the reliability is high.

[0034] Please continue to refer to Figure 3 In this embodiment, a waste air inlet channel 122 is formed between the exhaust port 131 and the air inlet side 210 . In the exhaust state, indoor air enters the waste air inlet channel 122 through the exhaust port 131 and flows toward the air inlet side 210 along the waste air inlet channel 122 .

[0035] Figure 4 This is a structural cross-sectional view of the fresh air device 010 provided in the first embodiment when the first valve 300 is in the fresh air state. Figure 5 for Figure 4 A magnified view of the local structure at B in the figure. Figure 4 and Figure 5 As shown, the first valve 300 also has a fresh air state that allows outdoor air to enter the room. In the fresh air state, the first valve 300 closes the exhaust port 131 to block the room from the air inlet side 210, opens the air flow channel from the air outlet side 220 to the room, and closes the sewage air channel 123 from the air outlet side 220 to the first air port 121. When the first valve 300 is in the fresh air state, the fresh air device 010 is in the fresh air mode. Figure 4The arrows in represent the airflow path of the fresh air device 010 in the fresh air mode.

[0036] Please continue to refer to Figure 4 When the first valve 300 is in the fresh air state, the fresh air entering through the air inlet side 210 of the fan assembly 200 is discharged from the air outlet side 220 and then discharged into the room, thus providing fresh air to the room. During this process, the first valve 300 closes the air outlet 131, preventing indoor air from entering the sewage air inlet duct 122 through the air outlet 131. At the same time, the first valve 300 also cuts off the sewage air outlet duct 123 from the air outlet side 220 to the first air outlet 121, preventing the fresh air discharged from the air outlet side 220 from returning to the first air outlet 121 through the sewage air outlet duct 123. This ensures that the fresh air, after being discharged from the air outlet side 220, flows into the room.

[0037] That is to say, when the first valve 300 is in the fresh air state, it is still possible to manage the opening or closing of the three channels from the exhaust port 131 to the air inlet side 210, the air outlet side 220 to the indoor space, and the air outlet side 220 to the first air port 121, thereby meeting the fresh air supply function of the fresh air device 010.

[0038] Please continue to refer to Figure 1 and Figure 3 In this embodiment, the inner cavity of the shell 100 includes an air guide cavity 110 and an accommodating cavity 120 separated by a partition 130, wherein the cavity wall of the air guide cavity 110 is provided with a second air outlet 111 directly connected to the indoor room; the fan assembly 200 is arranged in the accommodating cavity 120, the sewage air discharge channel 123 is formed in the accommodating cavity 120, and the first air outlet 121 is opened in the cavity wall of the accommodating cavity 120; the air outlet 131 is opened on the partition 130, and the partition 130 is also provided with an air inlet 132.

[0039] When the exhaust function of the fresh air device 010 is needed, the first valve 300 is switched to the exhaust state. Under the action of the fan assembly 200, a negative pressure is formed on the air inlet side 210 of the fan assembly 200, and the indoor air will enter the air guide cavity 110 through the second air outlet 111, and further flow to the sewage air inlet channel 122 in the accommodating cavity 120 through the air outlet 131 opened on the partition 130; when the air flow gradually flows to the air inlet side 210, it will be discharged from the air outlet side 220. Since the first valve 300 has closed the air inlet 132 at this time, the air flow channel from the air outlet side 220 to the indoor room is blocked. Therefore, after the air flow is discharged through the air outlet side 220, it will enter the sewage air channel 123, and flow along the sewage air channel 123 to the first air outlet 121, and then be discharged to the outdoors from the first air outlet 121.

[0040] This setting form of the fresh air device 010 uses a partition 130 to separate the inner cavity of the shell 100 into an air guide cavity 110 directly connected to the indoor room, and a accommodating cavity 120 directly connected to the outdoor room, and by providing an exhaust port 131 and an air inlet 132 on the partition 130, it ensures that indoor air is discharged to the outdoors and outdoor air is supplied to the indoor room, and the structure is simple.

[0041] Please continue to refer to Figure 1 and Figure 3 In this embodiment, the first valve 300 is movably arranged on the partition 130. The first valve 300 includes a first valve body 310 and a second valve body 320 connected at an angle. The second valve body 320 is opposite to the entrance of the exhaust air channel 123. In the exhaust state, the first valve body 310 closes the air inlet 132 and exposes the exhaust port 131. The second valve body 320 connects the air outlet side 220 with the exhaust air channel 123. Please continue to refer to Figure 4 In the fresh air state, the first valve body 310 exposes the air inlet 132 and closes the air outlet 131 , and the second valve body 320 blocks the air outlet side 220 and the sewage air discharge channel 123 .

[0042] This arrangement of the first valve 300 allows it to switch between the exhaust state and the fresh air state through a simple movement process, and the control method is simple.

[0043] Please continue to refer to Figure 3 and Figure 4 In this embodiment, the air inlet 132 and the air outlet 131 are arranged at intervals along the moving direction of the first valve 300. That is, along the moving direction of the first valve 300, the air inlet 132 and the air outlet 131 are arranged in a straight line.

[0044] This arrangement of the air inlet 132 and the air outlet 131 can reduce the width of the first valve body 310, so that the first valve body 310 can meet the requirements of closing the exhaust port 131 and exposing the air inlet 132 or closing the air inlet 132 and exposing the air outlet 131 after movement with a smaller width, which is conducive to the compact structural design of the shell 100.

[0045] Here, “the width dimension of the first valve body 310 ” refers to the dimension of the first valve body 310 in a direction perpendicular to the moving direction thereof and parallel to the partition plate 130 .

[0046] In other embodiments, the exhaust port 131 and the air inlet 132 may be arranged in a staggered manner along the moving direction of the first valve body 310. In this case, the exhaust port 131 and the air inlet 132 are spaced apart not only along the moving direction of the first valve body 310 but also along the width direction of the first valve body 310. The width dimension of the first valve body 310 is appropriately increased so that the exhaust port 131 can be covered in the fresh air state.

[0047] Please continue to refer to Figure 2 and Figure 5 In this embodiment, the first valve body 310 is vertically connected to the second valve body 320 . The second valve body 320 is a plate-shaped structure. The side of the second valve body 320 facing the exhaust air channel 123 is used to close the exhaust air channel 123 .

[0048] Through the above arrangement, when the first valve 300 moves to the fresh air state, the sewage exhaust passage 123 can be closed by using the side of the second valve body 320 facing the sewage exhaust passage 123. The structure is simple, which is conducive to reducing the cost of the first valve 300.

[0049] In this embodiment, the first valve body 310 is also a plate-shaped structure. This configuration not only ensures the reliability of sealing or exposing the exhaust port 131 and the air inlet 132, but also further simplifies the structure of the first valve 300, thereby further reducing the cost of the first valve 300.

[0050] Please continue to refer to Figure 5 In this embodiment, the sewage exhaust channel 123 is partially recessed in a direction away from the second valve body 320 at a position surrounding its inlet, forming a matching stop 127; in the fresh air state, the second valve body 320 is embedded in the matching stop 127.

[0051] By setting the second valve body 320 to be embedded in the matching stop 127 in the fresh air state, after the fresh air is discharged from the air outlet side 220, the second valve body 320 can utilize the embedding effect with the matching stop 127 to form a labyrinth groove sealing structure at the entrance of the sewage air channel 123 to prevent the fresh air from leaking into the sewage air channel 123, thereby ensuring the amount of fresh air supplied to the room.

[0052] In this embodiment, in the fresh air state, the second valve body 320 is completely embedded in the mating stop 127, and the surface of the second valve body 320 facing away from the sewage air channel 123 is coplanar with the inner surface of the volute of the fan assembly 200, so that after the fresh air is discharged from the air outlet side 220, it will not be blocked by the second valve body 320, thereby reducing the wind resistance during the fresh air outlet process and ensuring the smoothness of the fresh air outlet.

[0053] Please continue to refer to Figure 2 and Figure 5 In this embodiment, the second valve body 320 includes a connecting edge 321 and a sealing edge 322. Specifically, the connecting edge 321 is used to connect with the first valve body 310, and the sealing edge 322 is provided with a rib 323 along its direction, and the rib 323 is located on the side of the second valve body 320 facing the sewage air discharge channel 123; the mating surface 128 is formed on the surface of the stop 127 facing the second valve body 320, wherein the mating surface 128 is used to abut and mate with the rib 323.

[0054] In this embodiment, the second valve body 320 is a rectangular plate-shaped structure. The second valve body 320 has four sides, one of which is a connecting side 321 for connecting to the first valve body 310 , and the other three sides are sealing sides 322 .

[0055] By providing a rib 323 on the sealing edge 322 of the second valve body 320, the sewage air duct 123 is closed by utilizing the abutment fit between the rib 323 and the mating surface 128 of the mating stop 127. On the one hand, the sealing purpose can be achieved by simply ensuring the abutment fit between the rib 323 and the mating surface 128, which can reduce the machining accuracy requirements for the second valve body 320, and the line-surface sealing reliability is higher. On the other hand, the rib 323 can also be utilized to improve the structural strength of the second valve body 320, reduce the deformation caused by the second valve body 320, and thus extend the service life of the first valve 300.

[0056] Please continue to refer to Figure 2 In this embodiment, a groove 124 can be opened in the cavity wall of the accommodating cavity 120. Specifically, the groove 124 is opposite to the entrance of the exhaust air channel 123, and the groove 124 forms an accommodating portion on the side facing the exhaust air channel 123, wherein the accommodating portion is used to accommodate the second valve body 320 in the exhaust state.

[0057] The setting of the above-mentioned groove 124 can accommodate the second valve body 320 in the exhaust state, thereby forming a labyrinth groove sealing structure between the second valve body 320 and the cavity wall of the accommodating cavity 120, preventing the indoor air discharged through the air outlet side 220 from flowing back to the air guide cavity 110 through the gap between the second valve body 320 and the cavity wall, thereby ensuring the exhaust efficiency.

[0058] Please continue to refer to Figure 1 、 Figure 3 and Figure 4 There are two second air vents 111, which are located at different positions of the air guide cavity 110. Specifically, in this embodiment, the two second air vents 111 are disposed opposite to each other, for discharging air toward the fresh air device 010 in two opposite directions.

[0059] The above-mentioned setting not only ensures the fresh air volume and exhaust efficiency by increasing the number of the second air outlets 111, but also utilizes the different orientations of the second air outlets 111 to achieve the purpose of the fresh air device 010 blowing fresh air in different directions and introducing indoor air at different positions into the air guide cavity 110, so that the indoor environment can meet user needs in a shorter time, thereby improving the user experience.

[0060] Please continue to refer to Figure 1 、 Figure 3 and Figure 4In this embodiment, the fresh air device 010 may further include a second valve 400. Specifically, the second valve 400 is movably connected to the shell 100. In the exhaust state, the second valve 400 connects the sewage exhaust channel 123 and the first air outlet 121, and closes the fresh air inlet channel 126 from the first air outlet 121 to the air inlet side 210. In the fresh air state, the second valve 400 connects the first air outlet 121 and the air inlet side 210, and blocks the sewage exhaust channel 123 and the first air outlet 121.

[0061] When it is necessary to introduce fresh air into the room, the first valve 300 can be made to close the exhaust vent 131 to block the air guide chamber 110 and the air inlet side 210, and the air inlet 132 can be opened to connect the outlet side 220 to the fresh air exhaust channel 125 of the air guide chamber 110. At the same time, the sewage air channel 123 from the outlet side 220 to the first air vent 121 is closed, and the second valve 400 connects the first air vent 121 and the air inlet side 210, and blocks the sewage air channel 123 from the first air vent 121, so that outdoor air enters through the first air vent 121, flows to the air inlet side 210 of the fan assembly 200 through the fresh air inlet channel 126, and under the action of the fan assembly 200, flows into the fresh air exhaust channel 125 from the air outlet side 220 of the fan assembly 200, and enters the air guide chamber 110 through the air inlet 132, and is finally discharged to the room through the second air vent 111, thereby achieving the purpose of introducing fresh air into the room.

[0062] When it is necessary to discharge the indoor air to the outside, the first valve 300 can open the exhaust port 131 to connect the air guide cavity 110 to the sewage air inlet channel 122 on the air inlet side 210, close the air inlet 132 to cut off the fresh air inlet channel 126 from the air outlet side 220 to the air guide cavity 110, and open the sewage air channel 123 from the air outlet side 220 to the first air port 121. The second valve 400 connects the sewage air channel 123 with the first air port 121 and closes the first air port 121. The fresh air inlet 121 is connected to the fresh air inlet duct 126 on the air inlet side 210, so that the indoor air enters the air guide cavity 110 through the second air outlet 111, enters the sewage air inlet duct 122 through the air outlet 131, and then flows toward the air inlet side 210 of the fan assembly 200. Under the action of the fan assembly 200, it flows into the sewage air outlet duct 123 from the air outlet side 220 of the fan assembly 200, and is finally discharged to the outside through the first air outlet 121, thereby achieving the purpose of discharging the indoor air to the outside.

[0063] This setting form of the fresh air device 010 can achieve the purpose of both introducing fresh air into the room and exhausting indoor air to the outside by utilizing the same first air outlet 121 and second air outlet 111, without the need to set up separate air inlet ducts and exhaust ducts and corresponding connecting structures, thereby simplifying the structure of the fresh air device 010 and reducing the cost of the fresh air device 010.

[0064] Please continue to refer to Figure 4In this embodiment, the fresh air device 010 is provided with a filter component 500, and the filter component 500 is located between the first air outlet 121 and the air inlet side 210, and is used to filter the outdoor air entering through the first air outlet 121 in the fresh air mode to make it fresh air.

[0065] Example 2

[0066] Figure 6 This is a cross-sectional view of the structure of the fresh air device 010 provided in the second embodiment when the first valve 300 is in the exhaust state. Figure 6 As shown, this embodiment provides another fresh air device 010. The working principle of the fresh air device 010 in the exhaust mode and the working principle in the fresh air mode are the same as the working principle of the fresh air device 010 in the exhaust mode and the working principle in the fresh air mode provided in the above-mentioned embodiment 1. The only difference is as described below.

[0067] Please continue to refer to Figure 6 In this embodiment, a blocking member 324 is provided on the side of the second valve body 320 facing the sewage exhaust air channel 123. Specifically, the blocking member 324 is spaced apart from the first valve body 310 to form an avoidance gap 325 between the blocking member 324 and the first valve body 310; a guide surface 326 is formed on the surface of the blocking member 324 facing the sewage exhaust air channel 123, which is used to guide the airflow from the air outlet side 220 to the sewage exhaust air channel 123.

[0068] When the first valve 300 switches from the exhaust state to the fresh air state, as the first valve 300 moves on the partition 130, the second valve body 320 will gradually approach the sewage exhaust passage 123. When the second valve body 320 moves to the entrance of the sewage exhaust passage 123, the blocking member 324 will be inserted into the sewage exhaust passage 123. At the same time, the upper passage wall of the sewage exhaust passage 123 will be inserted into the avoidance gap 325, so that the avoidance gap 325 effectively avoids the sewage exhaust passage 123 and prevents movement interference.

[0069] The setting form of the above-mentioned second valve body 320 can also effectively block the sewage air channel 123 in the fresh air state. Moreover, it can also utilize the guide surface 326 set on the blocking member 324 to guide the air flow from the air outlet side 220 to the sewage air channel 123, so that in the exhaust mode, the indoor air discharged through the air outlet side 220 can flow smoothly to the sewage air channel 123, thereby improving the smoothness of the exhaust.

[0070] Example 3

[0071] Figure 7 This is a schematic diagram of the main structure of the air conditioning cabinet provided in this embodiment three. Figure 7As shown, this embodiment provides an air-conditioning cabinet, including a body 020 and the fresh air device 010 in the above-mentioned embodiment one or embodiment two. Specifically, the body 020 is provided with an installation cavity, and the installation cavity is used to accommodate the fresh air device 010.

[0072] By setting the fresh air device 010 in the above-mentioned embodiment 1 or embodiment 2 in the air-conditioning cabinet, the air-conditioning cabinet accordingly has all the advantages of the fresh air device 010 in the above-mentioned embodiment 1 or embodiment 2, which will not be described one by one here.

[0073] Please continue to refer to Figure 7 In this embodiment, the air conditioning cabinet may further include a fresh air duct 030, wherein one end of the fresh air duct 030 is connected to the first air outlet 121 of the fresh air device 010 (see Figure 1 、 Figure 3 、 Figure 4 and Figure 6 ), the other end of the fresh air duct 030 is passed through the wall 040.

[0074] 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.

[0075] 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.

[0076] In the above embodiments, the descriptions of directions such as “inside”, “outside”, and “side” are all based on the drawings.

[0077] 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 first valve (300); the housing (100) is provided with an air outlet (131) and a first air outlet (121); the air outlet (131) is connected to the indoor environment, and the first air outlet (121) is connected to the outdoor environment; The fan assembly (200) is arranged in the inner cavity of the housing (100), and the fan assembly (200) has an air inlet side (210) and an air outlet side (220); the first valve (300) has an exhaust state for exhausting indoor air through the first air outlet (121); in the exhaust state, the first valve (300) opens the air outlet (131) to connect the indoor air with the air inlet side (210), closes the air flow passage from the air outlet side (220) to the indoor air, and connects the sewage air discharge passage (123) from the air outlet side (220) to the first air outlet (121); The inner cavity of the housing (100) comprises an air guide cavity (110) and a receiving cavity (120) separated by a partition (130); a second air outlet (111) directly communicating with the interior of the room is provided on the cavity wall of the air guide cavity (110); The fan assembly (200) is arranged in the accommodating cavity (120), the sewage exhaust passage (123) is formed in the accommodating cavity (120), and the first air outlet (121) is opened in the cavity wall of the accommodating cavity (120); The air outlet (131) is provided on the partition (130), and the partition (130) is also provided with an air inlet (132); A dirty air inlet channel (122) is formed between the air outlet (131) and the air inlet side (210).

2. The fresh air device according to claim 1, characterized in that: The first valve (300) also has a fresh air state for allowing outdoor air to enter the room. In the fresh air state, the first valve (300) closes the exhaust port (131) to block the room from the air inlet side (210), opens the air flow channel from the air outlet side (220) to the room, and closes the sewage air channel (123).

3. The fresh air device according to claim 2, characterized in that: The first valve (300) is movably arranged on the partition (130), and the first valve (300) includes a first valve body (310) and a second valve body (320) connected at an angle, and the second valve body (320) is opposite to the entrance of the exhaust air channel (123); in the exhaust state, the first valve body (310) closes the air inlet (132) and exposes the air outlet (131), and the second valve body (320) connects the air outlet side (220) and the exhaust air channel (123); in the fresh air state, the first valve body (310) exposes the air inlet (132) and closes the air outlet (131), and the second valve body (320) blocks the air outlet side (220) and the exhaust air channel (123).

4. The fresh air device according to claim 3, characterized in that: The air inlet (132) and the air outlet (131) are arranged at intervals along the moving direction of the first valve (300).

5. The fresh air device according to claim 3, characterized in that: The first valve body (310) is vertically connected to the second valve body (320); the second valve body (320) is a plate-shaped structure; a side of the second valve body (320) facing the sewage exhaust passage (123) is used to close the sewage exhaust passage (123).

6. The fresh air device according to claim 5, characterized in that: The sewage exhaust air channel (123) is partially recessed in a direction away from the second valve body (320) at a position surrounding its inlet, forming a matching stop (127); in the fresh air state, the second valve body (320) is embedded in the matching stop (127).

7. The fresh air device according to claim 6, characterized in that: The second valve body (320) includes a connecting edge (321) and a sealing edge (322), wherein the connecting edge (321) is used to connect with the first valve body (310), and the sealing edge (322) is provided with a rib (323) running along the sealing edge, and the rib (323) is located on a side of the second valve body (320) facing the sewage exhaust air channel (123); the mating stop (127) forms a mating surface (128) on the surface facing the second valve body (320), and the mating surface (128) is used to abut and mate with the rib (323).

8. The fresh air device according to claim 3, characterized in that: A groove (124) is formed on the wall of the accommodating cavity (120), and the groove (124) is opposite to the entrance of the exhaust air channel (123). The groove (124) forms an accommodating portion on a side facing the exhaust air channel (123), and the accommodating portion is used to accommodate the second valve body (320) in the exhaust state.

9. The fresh air device according to any one of claims 2 to 8, characterized in that: The fresh air device further comprises a second valve (400), the second valve (400) being movably connected to the housing (100); in the exhaust state, the second valve (400) connects the sewage exhaust passage (123) with the first air outlet (121), and closes the fresh air inlet passage (126) from the first air outlet (121) to the air inlet side (210); in the fresh air state, the second valve (400) connects the first air outlet (121) with the air inlet side (210), and blocks the sewage exhaust passage (123) from the first air outlet (121).

10. An air-conditioning cabinet, characterized in that: It comprises a machine body (020) and the fresh air device according to any one of claims 1 to 9, wherein the machine body (020) is provided with an installation cavity, and the installation cavity is used to accommodate the fresh air device.

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