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 and is designed to solve the problem of poor exhaust during the exhaust process of existing fresh air devices. The fresh air device includes a housing, a fan assembly, and an exhaust duct. The housing has a storage space, and the storage space is provided with a first air outlet connected to the outside. The fan assembly is arranged in the storage space, and the fan assembly forms an air inlet cavity on its air inlet side and an air outlet cavity on its air outlet side. The exhaust duct connects the first air outlet and the air outlet cavity. The air outlet direction of the fan assembly is a first direction. The line connecting the inlet center and the outlet center of the exhaust duct is an exhaust line. The direction of air outlet along the exhaust line is a second direction. The angle between the first direction and the second direction is α, wherein 110°<α<120°. The present invention ensures the smoothness of the fresh air device during the exhaust process.

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 room, reducing air turbidity and improving the user experience. Furthermore, some fresh air devices are equipped with exhaust ducts to exhaust indoor air to the outside, thereby preventing excessive carbon dioxide concentrations in the room and causing reduced comfort. However, existing fresh air devices have issues with exhaust flow. Summary of the Invention

[0003] The first object of the present invention is to provide a fresh air device to solve the technical problem of poor exhaust during the exhaust process of existing fresh air devices.

[0004] The fresh air device provided by the present invention includes a shell, a fan assembly and an exhaust duct. The shell has a accommodating space, and the accommodating space is provided with a first air outlet connected to the outdoors; the fan assembly is arranged in the accommodating space, and the fan assembly forms an air inlet cavity on its air inlet side and an air outlet cavity on its air outlet side. The exhaust duct connects the first air outlet and the air outlet cavity. The air outlet direction of the fan assembly is a first direction, and the line connecting the inlet center of the exhaust duct and the outlet center is the exhaust line. The direction of air outlet along the exhaust line is a second direction. The angle between the first direction and the second direction is α, wherein 110°<α<120°.

[0005] When it is necessary to use the fresh air device to exhaust the indoor air to the outside, the fan assembly starts, forming a negative pressure on the air inlet side to make the indoor air flow into the air inlet chamber; then, the above air flow will continue to flow to the air outlet chamber under the action of the fan assembly, and then flow to the first air outlet through the exhaust duct, thereby achieving the purpose of exhausting air to the outside.

[0006] The fresh air device arranges the exhaust duct in the accommodating space and makes the angle between the exhaust line of the exhaust duct and the air outlet direction of the fan assembly between 110° and 120°, so that in the first direction, the first air outlet is closer to the air outlet cavity, and the height position of the first air outlet is raised. This not only reduces the bending degree of the airflow from the air outlet cavity to the exhaust duct, but also effectively shortens the length of the exhaust duct, thereby shortening the flow path of the airflow from the air outlet cavity to the first air outlet, reducing the exhaust resistance, and ensuring the exhaust smoothness during the exhaust process.

[0007] Furthermore, in the first direction, the distance between the inlet center of the exhaust duct and the outlet center is L1, and the distance between the inlet center of the exhaust duct and the inlet center of the air inlet cavity is L2, where L1:L2∈[0.43,0.54]. This configuration balances the horizontal and vertical dimensions of the fresh air device to minimize the airflow trajectory. It also brings the first air outlet closer to the air outlet cavity in the first direction, thereby further reducing the degree of airflow bending from the air outlet cavity to the exhaust duct and minimizing airflow resistance.

[0008] Furthermore, the exhaust duct includes a transition section and a guide section. The transition section is connected to the air outlet cavity, and the guide section is connected to the first air outlet. This arrangement can effectively reduce the tortuosity of the exhaust duct and optimize the flow path of the airflow from the air outlet cavity to the first air outlet, thereby further reducing exhaust resistance and ensuring smooth air discharge.

[0009] Furthermore, the inner wall of the transition section has a first guide line for guiding airflow, and the inner wall of the guide section has a third guide line for guiding airflow. The first guide line and the third guide line are connected, and the straight line in the first direction, the first guide line, and the third guide line are coplanar. The angle between the direction of airflow exiting along the first guide line and the first direction is β1, and the angle between the direction of airflow exiting along the third guide line and the first direction is β3, wherein 96° < β1 < β3 < 125°, and / or β1 < α < β3. This arrangement allows the airflow to be diverted in multiple stages and gradually, avoiding excessively large single diversion angles, thereby minimizing wind resistance and achieving smooth airflow.

[0010] Furthermore, the inner wall of the transition section also has a second guide line for guiding airflow. The surface on which the second guide line is located is arranged opposite the surface on which the first guide line is located, and the first guide line, the second guide line, and the third guide line are arranged coplanarly. The angle between the direction of air discharge along the second guide line and the first direction is β2, where β1≤β2<β3, and / or 105°<β2<α. This arrangement ensures that the airflow is guided on both opposing surfaces at the moment it enters the exhaust duct from the air outlet cavity, allowing the airflow to smoothly enter the guide section through the transition section, further improving the smoothness of air discharge.

[0011] Furthermore, in the first direction, the second guide line is located between the first guide line and the air inlet cavity. This arrangement allows the inclination of the second guide line disposed lower to be greater than the inclination of the first guide line disposed upper, thereby ensuring the flow cross-sectional area of ​​the transition section, increasing the exhaust volume, and improving the exhaust efficiency.

[0012] Furthermore, the air outlet direction of the first air outlet is a third direction. In the third direction, the length of the transition section is L3, and the length of the guide section is L4, where L3:L4∈[1.05,1.5]. By setting the length of the transition section in the third direction to be longer than the length of the guide section in the third direction, and increasing the horizontal length of the transition section when the dimension of the exhaust line along the first direction is fixed, the angle between the transition section and the horizontal plane can be reduced, thereby reducing the degree of bending of the airflow from the air outlet cavity to the exhaust duct, further improving the smoothness of air outlet.

[0013] Furthermore, the fresh air device further includes a first valve, which is movably connected to the housing and has an exhaust position and a fresh air position. In the exhaust position, the first valve connects the air outlet cavity and the first air port and blocks the first air port from the air inlet cavity. In the fresh air position, the first valve blocks the air outlet cavity and the first air port and connects the first air port to the air inlet cavity. The provision of the first valve enables the transition section to be connected with the first air port. The first valve forms a portion of the pipe wall of the guide section, eliminating the need for other forms of pipe wall structures between the transition section and the first air port. This simplifies the exhaust duct structure while further shortening the flow path of the airflow in the exhaust duct, thereby further improving exhaust smoothness.

[0014] Furthermore, the first valve includes a connected valve plate and a connector, the connector being rotatably connected to the housing. When in the exhaust position, the valve plate is used to form the pipe wall of the guide section to connect the transition section and the first air outlet. This configuration of the first valve not only simplifies the structure of the first valve and reduces its manufacturing cost, but also facilitates the control and switching of the first valve between the exhaust position and the fresh air position.

[0015] Furthermore, the housing has an air guiding cavity, which is located above the accommodating space, and in the first direction, the air outlet cavity is located between the air inlet cavity and the air guiding cavity. This arrangement can optimize the layout of each chamber inside the housing.

[0016] The second purpose of the present invention is to provide an air-conditioning cabinet to solve the technical problem of poor exhaust during the exhaust process of the existing fresh air device.

[0017] The air-conditioning cabinet provided by the present invention includes a body and the above-mentioned fresh air device. The body is provided with an installation cavity, and the installation cavity is used to accommodate the fresh air device. The body has a heat exchange module and a chassis, and the fresh air device is arranged closer to the chassis relative to the heat exchange module.

[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 the embodiment of the present invention in the exhaust mode Figure 1 ;

[0021] Figure 2 A cross-sectional view of the structure of the fresh air device provided in the embodiment of the present invention in the exhaust mode Figure 2 ;

[0022] Figure 3 A side cross-sectional view of a fresh air device provided by an embodiment of the present invention in exhaust mode and in an installed state (filter component not shown);

[0023] Figure 4 A structural cross-sectional view of the fresh air device provided by an embodiment of the present invention in the fresh air mode;

[0024] Figure 5 This is a schematic diagram of the main structure of an air-conditioning cabinet provided in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 010-Fresh air device; 020-Machine body; 021-Heat exchange module; 022-Chassis; 030-Fresh air duct; 040-Wall; 100-Casing; 200-Fan assembly; 300-Exhaust duct; 400-First valve; 500-Second valve; 600-Filter component; 110-Air guide chamber; 120-Accommodation space; 121-Air inlet chamber; 122-Air outlet chamber; 130-First air outlet; 140-Second air outlet; 150-Partition; 151-Exhaust outlet; 152-Air inlet; 310-Transition section; 311-First guide line; 312-Second guide line; 320-Guide section; 321-Third guide line; 410-Valve plate; 420-Connector. DETAILED DESCRIPTION

[0027] 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.

[0028] Figure 1 A cross-sectional view of the structure of the fresh air device 010 provided in this embodiment in the exhaust mode Figure 1 , Figure 2 The structural cross-section of the fresh air device 010 provided in this embodiment in the exhaust mode Figure 2 .like Figure 1 and Figure 2 As shown, this embodiment provides a fresh air device 010, including a shell 100, a fan assembly 200 and an exhaust duct 300. Specifically, the shell 100 has a accommodating space 120, and the accommodating space 120 is provided with a first air outlet 130 connected to the outdoors; the fan assembly 200 is arranged in the accommodating space 120, and the fan assembly 200 forms an air inlet cavity 121 on its air inlet side and an air outlet cavity 122 on its air outlet side, and the exhaust duct 300 connects the first air outlet 130 and the air outlet cavity 122. Figure 1 and Figure 2 In the figure, the solid arrows represent the airflow path of the fresh air device 010 in the exhaust mode.

[0029] Figure 3 This is a side cross-sectional view of the fresh air device 010 provided in this embodiment in exhaust mode and in an installed state (the filter component 600 is not shown). Figure 3 As shown, the air outlet direction of the fan assembly 200 is the first direction, the line connecting the inlet center and the outlet center of the exhaust duct 300 is the exhaust line, the air outlet direction along the exhaust line is the second direction, and the angle between the first direction and the second direction is α, where 110°<α<120°.

[0030] When it is necessary to use the fresh air device 010 to discharge indoor air to the outdoors, the fan assembly 200 is started to form a negative pressure on the air inlet side so that the indoor air flows to the air inlet chamber 121; then, the above air flow will continue to flow to the air outlet chamber 122 under the action of the fan assembly 200, and then flow to the first air outlet 130 through the exhaust duct 300, thereby achieving the purpose of exhausting air to the outdoors.

[0031] The fresh air device 010 sets the exhaust duct 300 in the accommodating space 120, and makes the angle between the exhaust line of the exhaust duct 300 and the air outlet direction of the fan assembly 200 be between 110° and 120°, so that in the first direction, the first air outlet 130 is closer to the air outlet cavity 122, and the height position of the first air outlet 130 is raised, which not only reduces the bending degree of the airflow from the air outlet cavity 122 to the exhaust duct 300, but also effectively shortens the length of the exhaust duct 300, thereby shortening the flow path of the airflow from the air outlet cavity 122 to the first air outlet 130, reducing the exhaust resistance, and ensuring the exhaust smoothness during the exhaust process.

[0032] In this embodiment, the air inlet cavity 121 and the air outlet cavity 122 are both formed in the accommodating space 120 .

[0033] In this embodiment, the first direction is Figure 3 the inlet center of the exhaust duct 300 is represented by the letter A, the outlet center of the exhaust duct 300 is represented by the letter B, and the connecting line AB represents the exhaust line.

[0034] Please continue to refer to Figure 3 In this embodiment, in the first direction, the distance between the inlet center of the exhaust duct 300 and the outlet center thereof is L1, and the distance between the inlet center of the exhaust duct 300 and the inlet center of the air inlet cavity 121 is L2, where L1:L2∈[0.43,0.54].

[0035] The above-mentioned setting can balance the horizontal and vertical dimensions of the fresh air device to compress the trajectory area of ​​the air flow as much as possible. At the same time, it also makes the first air outlet 130 closer to the air outlet cavity 122 in the first direction, thereby further reducing the bending degree of the air flow from the air outlet cavity 122 to the exhaust duct 300, and reducing the air outlet wind resistance as much as possible to meet the requirement of smooth air outlet.

[0036] Preferably, L1 = 89.9 mm, L2 = 175.4 mm.

[0037] Please continue to refer to Figure 1 and Figure 2 , and combined with Figure 3 In this embodiment, the exhaust duct 300 includes a transition section 310 and a guide section 320 , wherein the transition section 310 is used to connect with the air outlet cavity 122 .

[0038] By setting the exhaust duct 300 to this two-stage structure, the tortuosity of the exhaust duct 300 can be effectively reduced, and the flow path of the airflow from the air outlet chamber 122 to the first air outlet 130 can be optimized, which not only further reduces the exhaust resistance and ensures the smoothness of the air outlet, but also reduces the flow time of the airflow in the exhaust duct 300 and improves the exhaust efficiency.

[0039] Please continue to refer to Figure 3 In this embodiment, the inner wall of the transition section 310 has a first guide line 311 for guiding the airflow, and the inner wall of the guide section 320 has a third guide line 321 for guiding the airflow. Specifically, the first guide line 311 and the third guide line 321 are connected, and the straight line in the first direction, the first guide line 311, and the third guide line 321 are coplanar; the angle between the direction of the air outlet along the first guide line 311 and the first direction is β1, and the angle between the direction of the air outlet along the third guide line 321 and the first direction is β3, wherein 96°<β1<β3<125°, and / or, β1<α<β3.

[0040] The above arrangement allows the airflow to be divided into multiple stages and gradually turned, avoiding a single turning angle that is too large, thereby minimizing wind resistance as much as possible and achieving the purpose of smooth airflow.

[0041] In this embodiment, 96°<β1<102°. Preferably, β1=99.1°.

[0042] In this embodiment, 115°<β3<125°. Preferably, β3=120°, that is, the preferred value of the angle between β3 and the horizontal plane is 30°.

[0043] Please continue to refer to Figure 3 In this embodiment, the inner wall of the transition section 310 further has a second guide line 312 for guiding the airflow. Specifically, the surface where the second guide line 312 is located is arranged opposite to the surface where the first guide line 311 is located, and the first guide line 311, the second guide line 312 and the third guide line 321 are arranged in the same plane; the angle between the direction of air outlet along the second guide line 312 and the first direction is β2, wherein β1≤β2<β3, and / or 105°<β2<α.

[0044] The above arrangement allows the airflow to be guided on both sides at the moment it enters the exhaust duct 300 from the air outlet cavity 122, so that the airflow can smoothly enter the guide section 320 through the transition section 310, further improving the smoothness of the air outlet.

[0045] In this embodiment, 105°<β2<115°, preferably, β2=110°.

[0046] It should be noted that Figure 3 , the four dotted lines from top to bottom respectively represent: an extended auxiliary line of the third guide line 321 , an extended auxiliary line of the first guide line 311 , an extended auxiliary line of the exhaust line AB, and an extended auxiliary line of the second guide line 312 .

[0047] Please continue to refer to Figures 1 to 3In this embodiment, in the first direction, the second guide line 312 is located between the first guide line 311 and the air inlet cavity 121. In other words, the first guide line 311 is located above the second guide line 312.

[0048] The above arrangement, on the one hand, makes the inclination of the second guide line 312 arranged at the bottom greater than the inclination of the first guide line 311 arranged at the top, thereby ensuring the flow cross-sectional area of ​​the transition section 310, increasing the exhaust volume, and improving the exhaust efficiency. On the other hand, the inclined second guide line 312 can be used to guide impurities in the indoor air to a certain extent, so that these impurities can flow along the second guide line 312 toward the first air outlet 130, and will not flow back to the air outlet cavity 122.

[0049] Please continue to refer to Figure 3 In this embodiment, the air outlet direction of the first air outlet 130 is the third direction. In the third direction, the length of the transition section 310 is L3, and the length of the guide section 320 is L4, where L3:L4∈[1.05,1.5].

[0050] By setting the length of the transition section 310 in the third direction to be longer than the length of the guide section 320 in the third direction, and when the size of the exhaust line along the first direction is determined, the horizontal length of the transition section 310 is increased, and the angle between the transition section 310 and the horizontal plane can be reduced, thereby reducing the degree of bending of the airflow from the air outlet cavity 122 to the exhaust duct 300, and further improving the smoothness of the air outlet.

[0051] Preferably, L3=105.5 mm, L4=95 mm.

[0052] In this embodiment, the direction of the axis of the first air outlet 130 is taken as a reference, and the direction of the air flow from the first air outlet 130 toward the outside and parallel to the axis of the first air outlet 130 is the third direction. Figure 3 The direction of the X axis is indicated.

[0053] Figure 4 This is a cross-sectional view of the structure of the fresh air device 010 provided in this embodiment in the fresh air mode. Figures 1 to 3 , and combined with Figure 4In this embodiment, the fresh air device 010 may further include a first valve 400. Specifically, the first valve 400 is movably connected to the housing 100 and has an exhaust position and a fresh air position. In the exhaust position, the first valve 400 connects the air outlet cavity 122 with the first air outlet 130 and blocks the first air outlet 130 from the air inlet cavity 121. In the fresh air position, the first valve 400 blocks the air outlet cavity 122 from the first air outlet 130 and connects the first air outlet 130 to the air inlet cavity 121. The first valve 400 in the exhaust position connects the transition section 310 and the first air outlet 130, thereby forming a set of opposing pipe walls of the guide section 320 together with the third guide line 321. Figure 4 In the figure, the solid arrows represent the airflow path of the fresh air device 010 in the fresh air mode.

[0054] The setting of the first valve 400 can not only realize the switching of the fresh air device 010 between the exhaust mode and the fresh air mode, so that in the exhaust mode, the indoor air can flow to the air inlet chamber 121, and finally be discharged to the outside through the first air outlet 130, while in the fresh air mode, the outdoor air can flow to the air inlet chamber 121 through the first air outlet 130, and finally be discharged to the room, but also can realize the connection between the transition section 310 and the first air outlet 130, and use the first valve 400 to form a part of the pipe wall of the guide section 320, without having to set other forms of pipe wall structures between the transition section 310 and the first air outlet 130. While simplifying the structure of the exhaust duct 300, it can further shorten the flow path of the airflow in the exhaust duct 300, thereby further improving the exhaust smoothness.

[0055] Please continue to refer to Figures 1 to 3 In this embodiment, the first valve 400 may include a valve plate 410 and a connecting member 420. Specifically, the connecting member 420 is rotatably connected to the housing 100. When in the exhaust position, the valve plate 410 is used to form the pipe wall of the guide section 320, thereby connecting the transition section 310 and the first air outlet 130. The inner surface of the valve plate 410, that is, the surface of the valve plate 410 facing the pipe lumen of the exhaust duct 300, forms the pipe wall of the guide section 320.

[0056] This arrangement of the first valve 400 not only simplifies the structure of the first valve 400 and reduces the manufacturing cost of the first valve 400 , but also facilitates the control switching of the first valve 400 between the exhaust position and the fresh air position.

[0057] In other embodiments, the first valve 400 can be configured as a movable structure. In this case, the movement trajectory of the first valve 400 can be in the vertical direction, and the first valve 400 can be provided with an upper surface and a lower surface connected at an angle. When the first valve 400 moves to the lower edge of the upper surface where the transition section 310 connects to the first air outlet 130, the first valve 400 is in the exhaust position, and the exhaust duct 300 is in communication with the first air outlet 130. When the first valve 400 moves to the upper edge of the lower surface where the transition section 310 connects to the first air outlet 130, the first valve 400 is in the fresh air position, and the first air outlet 130 is in communication with the air inlet chamber 121.

[0058] Please continue to refer to Figures 1 to 4 In this embodiment, the housing 100 has an air guide cavity 110, which is located above the accommodating space 120. In the first direction, the air outlet cavity 122 is located between the air inlet cavity 121 and the air guide cavity 110. The air guide cavity 110 defines a second air outlet 140 that communicates with the interior of the room.

[0059] This arrangement positions 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. Furthermore, by positioning the air outlet cavity 122 between the air inlet cavity 121 and the air guide cavity 110, the layout of the various chambers within the housing 100 can be optimized.

[0060] Please continue to refer to Figures 1 to 3 In this embodiment, the fresh air device 010 further includes a partition 150, which is disposed inside the housing 100 to separate the internal space of the housing 100 into an air guide cavity 110 and a storage space 120. Specifically, the surface of the partition 150 is substantially parallel to the horizontal plane; the partition 150 defines an exhaust port 151 connecting the air guide cavity 110 and the storage space 120, so that in exhaust mode, the indoor air entering through the second air port 140 can flow through the exhaust port 151 to the air inlet cavity 121, thereby achieving the purpose of exhaust. In addition, referring to Figure 4 The partition 150 is also slidably mounted with a second valve 500. The partition 150 defines an air inlet 152, which is spaced apart from the air outlet 151 along the sliding direction of the partition 150. This allows the second valve 500 to close the air outlet 151 and expose the air inlet 152 in the fresh air mode. Outdoor air entering through the first air outlet 130 can enter the air guide cavity 110 through the air inlet 152 and be further discharged into the room through the second air outlet 140. The accommodation space 120 is also provided with a filter component 600, located between the first air outlet 130 and the air inlet cavity 121, for filtering the outdoor air entering through the first air outlet 130 to produce fresh air.

[0061] The working principle of the fresh air device 010 is as follows.

[0062] Please continue to refer to Figure 1 and Figure 2 In the exhaust mode, the first valve 400 connects the air outlet chamber 122 and the first air port 130 and blocks the first air port 130 from the air inlet chamber 121. The second valve 500 exposes the air outlet 151 and blocks the air flow channel from the air outlet chamber 122 to the air guide chamber 110. As a result, under the action of the fan assembly 200, the indoor air can enter the air guide chamber 110 through the second air port 140, and flow to the air inlet chamber 121 through the air outlet 151, and then flow out of the air outlet chamber 122, and then enter the exhaust duct 300, and then be discharged to the outside through the first air port 130, thereby achieving the purpose of discharging the indoor air to the outside.

[0063] Please continue to refer to Figure 4 In the fresh air mode, the first valve 400 blocks the air outlet chamber 122 and the first air port 130 and connects the first air port 130 and the air inlet chamber 121. The second valve 500 closes the air outlet 151 and exposes the air inlet 152, so that the air flow channel from the air outlet chamber 122 to the air guide chamber 110 is connected. Therefore, under the action of the fan assembly 200, the outdoor air can flow into the air inlet chamber 121 through the first air port 130. In this process, it becomes fresh air through the filter component 600, and then flows out of the air outlet chamber 122, and then enters the air guide chamber 110 through the air inlet 152, and is discharged into the room through the second air port 140, thereby achieving the purpose of introducing fresh air into the room.

[0064] 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 130 and second air outlet 140, 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.

[0065] Figure 5 This is a schematic diagram of the main structure of the air conditioning cabinet provided in this embodiment. Figure 5 As shown, this embodiment provides an air-conditioning cabinet, including a body 020 and the above-mentioned fresh air device 010. Specifically, the body 020 is provided with an installation cavity, which is used to accommodate the fresh air device 010, wherein the body 020 has a heat exchange module 021 and a chassis 022, and the fresh air device 010 is arranged closer to the chassis 022 relative to the heat exchange module 021.

[0066] By setting the above-mentioned fresh air device 010 in the air-conditioning cabinet, the air-conditioning cabinet accordingly has all the advantages of the above-mentioned fresh air device 010, which will not be described one by one here.

[0067] Please continue to refer to Figure 5In 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 130 of the fresh air device 010 (see Figures 1 to 4 ), the other end of the fresh air duct 030 is passed through the wall 040.

[0068] 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.

[0069] 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.

[0070] In the above embodiments, the descriptions of directions such as “inside”, “outside”, “upper”, and “lower” are all based on the drawings.

[0071] 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 an exhaust duct (300), wherein the housing (100) has a receiving space (120), and the receiving space (120) is provided with a first air outlet (130) communicating with the outside of the room; the fan assembly (200) is arranged in the receiving space (120), and the fan assembly (200) forms an air inlet cavity (121) on its air inlet side and an air outlet cavity (122) on its air outlet side; the exhaust duct (300) connects the first air outlet (130) and the air outlet cavity (122); the air outlet direction of the fan assembly (200) is a first direction; the inlet of the exhaust duct (300) is The line connecting the center of the exhaust duct (300) and the center of its outlet is the exhaust line, the direction of air discharge along the exhaust line is the second direction, and the angle between the first direction and the second direction is α, wherein 110°<α<120°; in the first direction, the outlet center of the exhaust duct (300) is located between the inlet center of the exhaust duct (300) and the inlet center of the air inlet cavity (121), the distance between the inlet center of the exhaust duct (300) and the outlet center thereof is L1, and the distance between the inlet center of the exhaust duct (300) and the inlet center of the air inlet cavity (121) is L2, wherein L1:L2∈[0.43,0.54].

2. The fresh air device according to claim 1, characterized in that: The exhaust duct (300) comprises a transition section (310) and a guide section (320), wherein the transition section (310) is used to connect to the air outlet cavity (122), and the guide section (320) is used to connect to the first air outlet (130).

3. The fresh air device according to claim 2, characterized in that: The inner wall of the transition section (310) has a first guide line (311) for guiding airflow, and the inner wall of the guide section (320) has a third guide line (321) for guiding airflow, the first guide line (311) and the third guide line (321) are connected, and the straight line where the first direction is located, the first guide line (311) and the third guide line (321) are coplanar; the angle between the direction of air outlet along the first guide line (311) and the first direction is β1, and the angle between the direction of air outlet along the third guide line (321) and the first direction is β3, wherein 96°<β1<β3<125°, and / or, β1<α<β3.

4. The fresh air device according to claim 3, characterized in that: The inner wall of the transition section (310) further comprises a second guide line (312) for guiding airflow, wherein the surface on which the second guide line (312) is located is arranged opposite to the surface on which the first guide line (311) is located, and the first guide line (311), the second guide line (312) and the third guide line (321) are arranged on the same plane; the angle between the direction of airflow along the second guide line (312) and the first direction is β2, wherein β1≤β2<β3, and / or 105°<β2<α.

5. The fresh air device according to claim 4, characterized in that: In the first direction, the second guide line (312) is located between the first guide line (311) and the air inlet cavity (121).

6. The fresh air device according to any one of claims 2 to 5, characterized in that: The air outlet direction of the first air outlet (130) is a third direction. In the third direction, the length of the transition section (310) is L3, and the length of the guide section (320) is L4, wherein L3:L4∈[1.05,1.5].

7. The fresh air device according to claim 2, characterized in that: The fresh air device further comprises a first valve (400), the first valve (400) being movably connected to the housing (100), and the first valve (400) having an exhaust position and a fresh air position; when in the exhaust position, the first valve (400) connects the air outlet cavity (122) and the first air port (130) and blocks the first air port (130) from the air inlet cavity (121); when in the fresh air position, the first valve (400) blocks the air outlet cavity (122) and the first air port (130) and connects the first air port (130) to the air inlet cavity (121).

8. The fresh air device according to claim 7, characterized in that: The first valve (400) includes a connected valve plate (410) and a connecting member (420), wherein the connecting member (420) is rotatably connected to the housing (100). When in the exhaust position, the valve plate (410) is used to form a pipe wall of the guide section (320) to connect the transition section (310) and the first air outlet (130).

9. The fresh air device according to any one of claims 1-5 or 7-8, characterized in that: The housing (100) has an air guide cavity (110), the air guide cavity (110) is located above the accommodating space (120), and in the first direction, the air outlet cavity (122) is located between the air inlet cavity (121) and the air guide cavity (110).

10. An air conditioning cabinet, characterized in that: The invention 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, the installation cavity is used to accommodate the fresh air device, the machine body (020) has a heat exchange module (021) and a chassis (022), and the fresh air device is arranged closer to the chassis (022) relative to the heat exchange module (021).

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