Fresh air device and air conditioner

Abstract

The application provides a fresh air device and an air conditioner, and relates to the technical field of air conditioners. The fresh air device provided by the embodiment of the application can realize the functions of pollution discharge and purification because the first cavity is provided with a dirty air outlet and a purification outlet, and the second cavity is provided with an indoor air outlet and an outdoor air outlet. In addition, the fresh air filter separates the first area and the second area, the dirty air outlet and the air inlet are located in the first area, and the purification outlet is located in the second area. Therefore, when the purification function is used, indoor air passes through the first filter and is purified. When the pollution discharge function is used, indoor dirty air does not pass through the first filter, and the pollutants in the indoor air can be discharged to the outdoor air as much as possible, and the filter is not excessively burdened. Therefore, the fresh air device provided by the embodiment of the application can realize the functions of purification and pollution discharge, and can better ensure the quality of indoor air.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a fresh air device and an air conditioner. Background Technology

[0002] Currently, most household air conditioners use an internal circulation system, where indoor air enters the air conditioner, exchanges heat with the heat exchanger, and then returns to the room without exchanging air with the outside. This circulation method leads to a deterioration in indoor air quality after prolonged use, especially when doors and windows are closed. To address this, some air conditioners have incorporated fresh air systems to introduce outdoor air; however, these systems currently have limited functionality and cannot adequately meet users' needs for purifying indoor air. Summary of the Invention

[0003] The problem addressed by this invention is how to enrich the functions of fresh air devices to better meet users' needs for purifying indoor air.

[0004] To address the aforementioned problems, in a first aspect, the present invention provides a fresh air device, comprising a housing and a first filter and a fan blade disposed within the housing. The housing forms a first cavity and a second cavity. The first cavity has a purification port and a waste air port, the purification port being used to connect to an indoor environment, and the waste air port being used to connect to an indoor environment. The first cavity and the second cavity are connected via an air intake port. The fan blade is used to draw air from the first cavity to the second cavity through the air intake port. The first filter is disposed in the first cavity and opposite to the purification port, used to filter air entering the first cavity from the purification port. Both the waste air port and the purification port can be selectively opened or closed. The second cavity has an indoor exhaust port and an outdoor exhaust port, the indoor exhaust port being used to connect to an indoor environment, and the outdoor exhaust port being used to connect to an outdoor environment. Both the indoor exhaust port and the outdoor exhaust port can be selectively opened or closed.

[0005] In this embodiment, when the purification port and indoor exhaust port are closed, and the waste air port and outdoor exhaust port are open, indoor air, driven by the fan blades, sequentially passes through the waste air port, the first chamber, the intake port, the second chamber, and the outdoor exhaust port to reach the outside, thus achieving an active waste removal function. Conversely, when the purification port and indoor exhaust port are open, and the waste air port and outdoor exhaust port are closed, outdoor air sequentially passes through the purification port, the first filter, the first chamber, the intake port, the second chamber, and the indoor exhaust port to reach the room, achieving a purification function. Therefore, the fresh air device provided in this embodiment can achieve both waste removal and purification functions. Furthermore, when using the purification function, indoor waste air passes through the first filter, while when using the waste removal function, indoor waste air does not pass through the first filter, allowing pollutants in the indoor air to be discharged to the outside as much as possible without placing excessive burden on the filter. Therefore, using the fresh air device provided in this embodiment can achieve both purification and waste removal functions, thereby better ensuring indoor air quality.

[0006] In an optional embodiment, the first cavity and the second cavity are arranged in a first direction and separated by a partition. The air inlet is located on the partition, and the waste air inlet and the purification inlet are both located on the side of the first cavity away from the second cavity in the first direction. When used in an air conditioner, especially a wall-mounted air conditioner, the first direction can be horizontal. In this case, when the waste air discharge or purification function is activated, the indoor air enters the fresh air device laterally. Furthermore, by locating the waste air inlet and the purification inlet on the side of the first cavity away from the second cavity in the first direction, the waste air inlet and the purification inlet can be located on the left or right side of the air conditioner. This keeps the waste air inlet and the purification inlet as far away as possible from the heat exchange air inlet at the top of the air conditioner, preventing the air intake of the air conditioner body from affecting the air intake of the waste air inlet and the purification inlet, thus avoiding a decrease in waste air discharge and purification capabilities.

[0007] In an optional embodiment, the fan blade is a centrifugal fan blade disposed within the second chamber, with its axial air intake side facing the air inlet. Both the indoor exhaust outlet and the outdoor exhaust outlet are located on one side of the fan blade's radial direction. When the first chamber, the second chamber, and the air conditioning unit are arranged sequentially, the indoor exhaust outlet and the air inlet are perpendicular to each other. However, the centrifugal fan blade, with its axial air intake and radial air exhaust characteristics, can well adapt to situations where the indoor exhaust outlet and the air inlet are perpendicular.

[0008] In an optional embodiment, the first chamber and the second chamber are arranged in a first direction and separated by a partition. An air inlet is disposed on the partition. A second filter is also disposed within the first chamber. The first chamber includes a first region and a second region, separated by the second filter. The air inlet and the stale air inlet are located on the side wall of the first region, and the purified air inlet is located on the side wall of the second region. The first filter is disposed within the second region. By placing the stale air inlet and the air inlet on the side wall of the first region, indoor air entering through the stale air inlet is directly discharged outdoors without passing through the filter; while air entering through the purified air inlet can pass through both the first and second filters for stronger filtration and purification, thus better ensuring indoor air quality.

[0009] In an optional embodiment, a first support plate and a second support plate are respectively provided on two inner walls opposite to each other in a first direction of the first cavity, wherein the second support plate is disposed on a partition, and the two ends of the second filter are respectively connected to the first support plate and the second support plate. The first support plate, the second filter and the second support plate together divide the first cavity into a first region and a second region.

[0010] In an optional embodiment, the first support plate and the second support plate are positioned differently in the second direction. The second filter element is plate-shaped and inclined in both the first and second directions. In the first direction, the end of the second filter element connected to the second support plate is closer to the partition than the end of the second filter element connected to the first support plate. The second direction is perpendicular to the first direction. In this embodiment, the inclined arrangement of the second filter element can increase its area and improve the purification effect; a gradually narrowing flow channel is formed between the second filter element and the partition; this can reduce the airflow resistance of the indoor air entering through the vent.

[0011] In an optional embodiment, a third support plate is also provided in the second region. The third support plate and the first support plate are disposed on the inner wall of the same side of the first cavity, and the first support plate and the third support plate are respectively located on opposite sides of the purification port. The two ends of the first filter element are respectively connected to the first support plate and the third support plate and cover the purification port.

[0012] In an optional embodiment, both the first support plate and the third support plate are slidably engaged with the first filter element, and a first mounting port is provided on the housing for the first filter element to be extracted from or inserted into the first cavity. By slidably engaging the first filter element with the first and third support plates and providing the first mounting port, the installation and removal of the first filter element can be made more convenient.

[0013] In an optional embodiment, both the first support plate and the second support plate are slidably engaged with the second filter element, and a second mounting port is provided on the housing for the second filter element to be extracted from or inserted into the first cavity. By slidably engaging the second filter element with the first and second support plates and providing the second mounting port, the installation and removal of the second filter element can be made more convenient.

[0014] In an optional implementation, the fresh air system also includes a switching component for selectively opening one of the indoor and outdoor exhaust vents while simultaneously blocking the other. Since the indoor and outdoor exhaust vents are not used simultaneously, selectively opening one by switching the component reduces the use of drive mechanisms (such as motors), resulting in a more compact structure and lower costs.

[0015] In an optional implementation, the switching component includes a first rotating damper, which is rotatably connected to the inner wall of the second cavity. The first rotating damper can selectively open the indoor exhaust vent while blocking the outdoor exhaust vent, or open the outdoor exhaust vent while blocking the indoor exhaust vent, by rotating.

[0016] In an optional embodiment, the fresh air unit also includes an air valve, which is installed on the outside of the housing and communicates with the outdoor exhaust vent and the fresh air vent. The air valve has a main valve port for connecting to the outside. By setting the air valve, the two openings connecting the fresh air unit to the outside can be combined into a single main valve port, thus reducing the number of openings in the wall and simplifying the fit between the fresh air unit and the wall.

[0017] In an optional embodiment, the housing is provided with a sliding door, which can be slid to selectively open one of the waste air vent and the purification air vent.

[0018] Secondly, the present invention provides an air conditioner, including an air conditioner body and a fresh air device according to any of the foregoing embodiments, wherein the first cavity, the second cavity and the air conditioner body are arranged sequentially along the length of the air conditioner. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a fresh air device from a first-view perspective in one embodiment of this application;

[0020] Figure 2 This is a schematic diagram of a fresh air device in one embodiment of this application from a second perspective;

[0021] Figure 3 This is a first cross-sectional view of the fresh air device in fresh air mode in one embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the fresh air device with the air valve removed in one embodiment of this application;

[0023] Figure 5 This is an exploded view of a fresh air device in one embodiment of this application;

[0024] Figure 6 This is a second cross-sectional view of the fresh air device in fresh air mode in one embodiment of this application;

[0025] Figure 7 This is a third sectional view of the fresh air device in fresh air mode in one embodiment of this application;

[0026] Figure 8 This is a first cross-sectional view of the fresh air device in the sewage discharge mode in one embodiment of this application;

[0027] Figure 9 This is a second cross-sectional view of the fresh air device in the sewage discharge mode in one embodiment of this application;

[0028] Figure 10 This is a third cross-sectional view of the fresh air device in the sewage discharge mode in one embodiment of this application;

[0029] Figure 11 This is a first cross-sectional view of the fresh air device in purification mode in one embodiment of this application;

[0030] Figure 12 This is a second cross-sectional view of the fresh air device in purification mode in one embodiment of this application;

[0031] Figure 13 This is a schematic diagram of an air conditioner in one embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 010-Air conditioner; 100-Fresh air unit; 110-Casing; 111-Middle casing; 112-Partition; 113-Air inlet; 114-Support frame; 115-End plate; 116-First support plate; 117-Second support plate; 118-Third support plate; 119-Vortex; 120-First cavity; 121-First zone; 122-Second zone; 123-Fresh air inlet; 124-Purification port; 125- 126 - Sliding door; 130 - Second chamber; 131 - Indoor exhaust vent; 132 - Outdoor exhaust vent; 140 - Fan blade; 150 - Second filter element; 151 - Second filter frame; 160 - First filter element; 161 - First filter frame; 170 - Air valve; 171 - Main valve port; 172 - First rotating damper; 173 - Second rotating damper; 200 - Air conditioner body; 210 - Air inlet; 220 - Air outlet. Detailed Implementation

[0033] Air conditioners are typically used with doors and windows closed to minimize the escape of cool or warm air from indoors. However, current household air conditioners often operate on an internal recirculation system, meaning they don't exchange indoor and outdoor air. If this exchange isn't maintained for extended periods, indoor air quality deteriorates, leading to increased carbon dioxide and harmful volatile organic compound (VOC) concentrations. While air conditioners with fresh air intake systems can improve indoor air quality by introducing fresh outdoor air, current systems are limited in function, only introducing fresh air and failing to significantly enhance air quality improvement.

[0034] To address the shortcomings of the prior art, this application provides a fresh air device that can exhaust indoor air to the outside and purify indoor air through indoor circulation, thereby improving indoor air quality, via a single fan blade.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Figure 1 This is a schematic diagram of a fresh air device 100 in one embodiment of this application from a first perspective; Figure 2 This is a schematic diagram of a fresh air device 100 in one embodiment of this application from a second perspective; Figure 3 This is a first cross-sectional view of a fresh air device 100 in a fresh air mode according to one embodiment of this application. Figures 1 to 3 As shown, the fresh air device 100 provided in this embodiment includes a housing 110 and a fan blade 140 and a second filter element 150 disposed within the housing 110. A first cavity 120 and a second cavity 130 are formed within the housing 110. In this embodiment, the first cavity 120 and the second cavity 130 are arranged in a first direction and separated by a partition 112. An air inlet 113 is provided on the partition 112, and the fan blade 140 is used to guide the air from the first cavity 120 to the second cavity 130 through the air inlet 113.

[0037] The first chamber 120 has a waste air inlet 125, a clean air inlet 124, and a fresh air inlet 123. The clean air inlet 124 and the waste air inlet 125 are used to connect to the indoor environment, and the fresh air inlet 123 is used to connect to the outdoor environment. The first chamber 120 is connected to the second chamber 130 through an air intake 113. The first chamber 120 includes a first region 121 and a second region 122, which are separated by a second filter element 150. The air intake 113 and the waste air inlet 125 are located on the side wall of the first region 121, and the clean air inlet 124 and the fresh air inlet 123 are located on the side wall of the second region 122. The fresh air inlet 123, the clean air inlet 124, and the waste air inlet 125 can all be selectively opened or closed. A first filter element 160 is disposed within the second region 122.

[0038] The second cavity 130 has an indoor exhaust vent 131 and an outdoor exhaust vent 132 (see...). Figure 4 The indoor exhaust vent 131 is used to connect to the indoor environment, and the outdoor exhaust vent 132 is used to connect to the outdoor environment. Both the indoor exhaust vent 131 and the outdoor exhaust vent 132 can be selectively opened or closed.

[0039] As can be seen, in this embodiment of the application, the fresh air device 100 can achieve the function of active sewage discharge by setting the sewage vent 125 on the housing 110, and can achieve the function of indoor air purification by setting the purification vent 124 through internal circulation. Furthermore, since the second filter element 150 separates the first area 121 and the second area 122, and the air inlet 113 and the fresh air inlet 123 are located in different areas, as are the purification inlet 124, while the waste air inlet 125 is located in the same area as the air inlet 113, when the waste air inlet 125 is open (fresh air inlet 123 and purification inlet 124 are closed) for waste discharge, the indoor air entering through the waste air inlet 125 can bypass the second filter element 150 and be directly drawn into the second chamber 130 by the fan blade 140, and finally discharged to the outside through the outdoor exhaust vent 132; when the purification inlet 124 is open (fresh air inlet 123 and purification inlet 124 are closed) for indoor air purification, the indoor air can pass through the first filter element 160 and the second filter element 150 in sequence, then enter the second chamber 130, and finally be discharged into the room through the indoor exhaust vent 131. When fresh air is introduced by opening the fresh air inlet 123 (and closing the waste air inlet 125), the fresh air enters the first chamber 120, passes through the second filter 150 from the second area 122, enters the first area 121, is then drawn into the second chamber 130 by the fan blade 140, and is finally discharged into the room from the indoor exhaust vent 131.

[0040] In alternative embodiments, if filtration of the fresh air is not required, the second filter 150 may not be provided.

[0041] Furthermore, in this embodiment, the purification port 124 and the waste air port 125 are both located on the side of the first cavity 120 away from the second cavity 130 in the first direction, and the fresh air port 123 is located on the side of the first cavity 120 in the second direction. The first direction is perpendicular to the second direction, and the partition 112 is parallel to the second direction.

[0042] Furthermore, in this embodiment, the fan blade 140 is a centrifugal fan blade disposed within the second cavity 130. The axial air intake side of the fan blade 140 faces the air inlet 113, and both the indoor exhaust outlet 131 and the outdoor exhaust outlet 132 are located on one side of the fan blade 140 in the radial direction. The centrifugal fan blade has the characteristics of axial air intake and radial air exhaust, which can well adapt to the situation where the indoor exhaust outlet 131 and the air inlet 113 are perpendicular to each other.

[0043] In this embodiment, the fresh air device 100 also includes a damper 170, which is installed on the outside of the housing 110 and communicates with the outdoor exhaust port 132 and the fresh air inlet 123. The damper 170 has a main valve port 171 for connecting to the outside. By setting the damper 170, the two openings of the fresh air device 100 that communicate with the outside can be combined into a single main valve port 171, which reduces the number of openings on the wall, simplifies the fit between the fresh air device 100 and the wall, and facilitates the installation of the fresh air device 100. Figure 4 This is a schematic diagram of the fresh air device 100 with the air valve 170 removed in one embodiment of this application. Figure 4 As shown, the outdoor exhaust vent 132 and the fresh air vent 123 are located on the same side of the housing 110. After the damper 170 is installed, the damper 170 covers the outdoor exhaust vent 132 and the fresh air vent 123. The opening and closing of the outdoor exhaust vent 132 and the fresh air vent 123 are controlled independently, and the main valve 171 can remain in a normally open state.

[0044] In this embodiment, a first support plate 116 and a second support plate 117 are respectively disposed on two inner walls opposite each other in a first direction of the first cavity 120. The second support plate 117 is disposed on the partition 112. The two ends of the second filter element 150 are respectively connected to the first support plate 116 and the second support plate 117. The first support plate 116, the second filter element 150, and the second support plate 117 together divide the first cavity 120 into a first region 121 and a second region 122. Figure 3 As shown, the area above the second filter element 150 and the first support plate 116 is the first area 121, and the area to the lower left of the second filter element 150 is the second area 122.

[0045] Furthermore, the first support plate 116 and the second support plate 117 are positioned differently in the second direction, with the first support plate 116 being higher than the second support plate 117. The second filter element 150 is plate-shaped and inclined in both the first and second directions. In the first direction, the end of the second filter element 150 connected to the second support plate 117 is closer to the partition plate 112 than the end of the second filter element 150 connected to the first support plate 116. The inclined arrangement of the second filter element 150 increases the filtration area and improves the filtration effect. Additionally, the second filter element 150 and the partition plate 112 form a tapering flow channel downstream of the first region 121, reducing the resistance to draft air.

[0046] Furthermore, the projection of the second filter element 150 along the first direction onto the partition 112 covers at least 80% of the air inlet 113. Since the air entering through the fresh air inlet 123 can only reach the first area 121 and then the air inlet 113 through the second filter element 150, by ensuring that the projection of the second filter element 150 onto the partition 112 covers at least 80% of the air inlet 113, the second filter element 150 is large enough to increase the intake volume of fresh air to a certain extent, while also improving the filtration effect.

[0047] In this embodiment, a third support plate 118 is further provided on the inner wall of the second region 122 of the first cavity 120. The third support plate 118 and the first support plate 116 are disposed on the same side of the first cavity 120. The first filter element 160 is located between the first support plate 116 and the third support plate 118, and both ends of the first filter element 160 are respectively connected to the first support plate 116 and the third support plate 118. In this embodiment, both the first support plate 116 and the third support plate 118 are slidably engaged with the first filter element 160. A first mounting port is provided on the housing 110 for the first filter element 160 to be pulled out of or inserted into the first cavity 120. By slidably engaging the first filter element 160 with the first support plate 116 and the third support plate 118 and providing the first mounting port, the installation and removal of the first filter element 160 can be made more convenient.

[0048] Furthermore, both the first support plate 116 and the second support plate 117 are slidably engaged with the second filter element 150. A second mounting port is provided on the housing 110, allowing the second filter element 150 to be extracted from or inserted into the first cavity 120. By slidably engaging the second filter element 150 with the first support plate 116 and the second support plate 117, and by providing the second mounting port, the installation and removal of the second filter element 150 becomes more convenient.

[0049] In this embodiment, the fresh air device 100 further includes a switching component for selectively opening one of the indoor exhaust vent 131 and the outdoor exhaust vent 132 while simultaneously blocking the other. Since the indoor exhaust vent 131 and the outdoor exhaust vent 132 are not used simultaneously, selectively opening one of them using the switching component reduces the use of a drive mechanism, resulting in a compact structure and reduced costs.

[0050] In an optional embodiment, the switching component includes a first rotating damper 172, which is rotatable relative to the inner wall of the second cavity 130. The first rotating damper 172 can selectively open the indoor exhaust vent 131 while simultaneously blocking the outdoor exhaust vent 132, or open the outdoor exhaust vent 132 while simultaneously blocking the indoor exhaust vent 131, by rotating. In this embodiment, the switching component is disposed on the damper 170. In other optional embodiments, the switching component can be disposed on the housing 110. In this embodiment, the switching component also includes a motor for driving the first rotating damper 172 to rotate.

[0051] In this embodiment, the fresh air device 100 further includes a second rotating damper 173, which can be rotated to selectively open or close the fresh air inlet 123. A separate motor can be provided to drive the second rotating damper 173. In this embodiment, the second rotating damper 173 is mounted on the air valve 170; in other optional embodiments, the second rotating damper 173 can also be rotatably connected to the housing 110.

[0052] In this embodiment, when the purification function is activated, indoor air passes through the first filter 160 and the second filter 150 before being returned to the room; when the fresh air function is activated, outdoor air passes through the second filter 150 before entering the room. Considering that the fresh air function and the purification function deal with different objects—the fresh air function primarily filters outdoor air, focusing on removing particulate matter, while the purification function primarily purifies indoor air, focusing on volatile organic compounds (VOCs)—the first filter 160 and the second filter 150 can be of different types or have different filtration capacities.

[0053] In this embodiment, a sliding door 126 is provided on the housing 110. The sliding door 126 can be slid to selectively open either the sewage vent 125 or the purification vent 124. Since the sewage discharge function and the purification function can only be activated selectively, only one of the sewage vent 125 and the purification vent 124 will be opened. Therefore, the purification vent 124 and the sewage vent 125 can also be opened or closed through the same sliding door 126. When the sewage vent 125 is opened, the sliding door 126 blocks the purification vent 124, and when the purification vent 124 is opened, the sliding door 126 blocks the sewage vent 125. Furthermore, the sliding door 126 can simultaneously block both the purification vent 124 and the sewage vent 125. In this embodiment, a motor can be provided to drive the sliding door 126 to move.

[0054] Figure 5 This is an exploded view of a fresh air device 100 in one embodiment of this application. Figure 5As shown in this embodiment, the housing 110 of the fresh air device 100 can be assembled from multiple components, including a volute 119, a middle shell 111, an end plate 115, and a support frame 114. The middle shell 111, end plate 115, and support frame 114 together form a first cavity 120. A partition 112 and a fresh air inlet 123 are located on the middle shell 111, while a waste air inlet 125 and a purification inlet 124 are formed on the end plate 115. In this embodiment, a portion of the first support plate 116 and a third support plate 118 are located on the support frame 114, and the support frame 114 rests against the end plate 115. In other optional embodiments, the first support plate 116 and the third support plate 118 can also be directly disposed inside the end plate 115.

[0055] In this embodiment, since the fan blade 140 is a centrifugal fan blade, a volute 119 is used to form the second cavity 130. The fan blade 140 is disposed within the second cavity 130, and the shape of the volute 119 matches the shape of the fan blade 140. In other optional embodiments, the fan blade 140 can also be an axial flow fan blade. In this case, the fan blade 140 can also be disposed in the air inlet 113, and the volute 119 forming the second cavity 130 can be replaced with other shapes.

[0056] In this embodiment, the second filter element 150 is disposed within the second filter frame 151, and the first filter element 160 is disposed within the first filter frame 161. This improves the edge strength of the filter element, facilitates sliding cooperation with the support plate, and also facilitates the loading and unloading of the filter element.

[0057] The operating principles of the fresh air unit 100 in three different modes are described below.

[0058] Figure 6 This is a second cross-sectional view of the fresh air device 100 in fresh air mode in one embodiment of this application; Figure 7 This is a third cross-sectional view of the fresh air device 100 in fresh air mode according to one embodiment of this application. Figure 3 , Figure 6 , Figure 7 As shown, in fresh air mode, sliding door 126 blocks the purification port 124 and the waste air port 125. Second rotating damper 173 opens the fresh air port 123, and first rotating damper 172 opens the indoor exhaust port 131 and closes the outdoor exhaust port 132. When fan blade 140 rotates, outdoor fresh air enters from the main valve port 171 of damper 170, passes through the fresh air port 123 into the first chamber 120, then passes through the second filter 150 into the second chamber 130, and finally exits into the room from the indoor exhaust port 131. The hollow arrows in the diagram indicate the airflow direction. During this process, because the outdoor exhaust port 132 is blocked, fresh air entering damper 170 will not directly enter the second chamber 130 from the outdoor exhaust port 132.

[0059] Figure 8 This is a first cross-sectional view of the fresh air device 100 in the sewage discharge mode in one embodiment of this application; Figure 9 This is a second cross-sectional view of the fresh air device 100 in the sewage discharge mode in one embodiment of this application; Figure 10 This is a third cross-sectional view of the fresh air device 100 in the sewage discharge mode according to one embodiment of this application. Figures 8 to 10 As shown, in the sewage discharge mode, the sliding door 126 opens the sewage vent 125 and closes the purification vent 124. The fresh air vent 123 is blocked by the second rotating damper 173, and the indoor exhaust vent 131 is also blocked by the second rotating damper 173. When the fan blade 140 rotates, indoor air enters the first area 121 of the first chamber 120 from the sewage vent 125, then directly enters the second chamber 130 from the air intake vent 113, and then enters the exhaust section of the volute 119 under the action of the fan blade 140. At this time, since the first rotating damper 172 blocks the indoor exhaust vent 131, the gas enters the damper 170 from the outdoor exhaust vent 132, and then is discharged to the outside from the main valve 171.

[0060] Figure 11 This is a first cross-sectional view of a fresh air device 100 in purification mode in one embodiment of this application; Figure 12 This is a second cross-sectional view of a fresh air device 100 in purification mode according to one embodiment of this application. Figure 11 and Figure 12 As shown, in purification mode, sliding door 126 opens purification port 124 and closes waste air port 125. Fresh air port 123 is blocked by second rotating damper 173, outdoor exhaust port 132 is blocked by first rotating damper 172, and indoor exhaust port 131 is open. After fan blade 140 rotates, indoor air enters the first chamber 120 through purification port 124, passes through first filter 160 and second filter 150, then enters the second chamber 130 through air intake port 113, and is then exhausted into the room through indoor exhaust port 131. Indoor air returns to the room after passing through fresh air device 100, undergoing two filtrations in the process, thus achieving purification.

[0061] Figure 13 This is a schematic diagram of an air conditioner 010 in one embodiment of this application. Figure 13 As shown, the air conditioner 010 provided in this embodiment includes an air conditioner body 200 and a fresh air device 100 provided in the above embodiment. In this embodiment, the air conditioner 010 is a wall-mounted air conditioner; in other optional embodiments, it can also be a cabinet air conditioner or a multi-split air conditioner.

[0062] In this embodiment, the air conditioning unit 200 is mainly used for temperature regulation and includes necessary components such as a heat exchanger and a fan. The air conditioning unit 200 includes an air inlet 210 and an air outlet 220. The air inlet 210 is located on the upper side of the air conditioning unit 200, and the air outlet 220 is located on the lower side of the air conditioning unit 200. The fresh air device 100 is located on one side of the air conditioning unit 200 in the horizontal direction, and the first cavity 120, the second cavity 130, and the air conditioning unit 200 are arranged in sequence. In this structure, the waste air outlet 125 and the purification outlet 124 are located on the side of the fresh air device 100 away from the air conditioning unit 200. Therefore, when the air is intake, it is not easily affected by the air intake 210 on the upper side of the air conditioning unit 200, thus ensuring the intake volume of the waste air outlet 125 and the purification outlet 124.

[0063] In this embodiment, when the fresh air device 100 is normally installed on the air conditioning unit 200, the indoor exhaust vent 131 and the fresh air vent 123 are located at the lower position of the fresh air device 100. The indoor exhaust vent 131 and the air outlet 220 are arranged side by side in the horizontal direction, and the lower position of the fresh air vent 123 facilitates connection to the external fresh air duct.

[0064] In this embodiment, an integrated panel can be provided on the outside of the fresh air device 100 and the air conditioning unit 200, which protects the fresh air device 100 and the air conditioning unit 200 while improving aesthetics. Although the present invention has been disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A fresh air device, characterized in that The air purifier comprises a housing (110), a first filter (160) and a fan blade (140) arranged in the housing (110), the housing (110) is formed with a first cavity (120) and a second cavity (130), the first cavity (120) is provided with a purified air outlet (124) and a dirty air outlet (125), the purified air outlet (124) is used for communicating with indoor air, the dirty air outlet (125) is used for communicating with indoor air, the first cavity (120) and the second cavity (130) are communicated through an air inlet (113), the fan blade (140) is used for guiding air in the first cavity (120) to the second cavity (130) through the air inlet (113), the first filter (160) is arranged in the first cavity (120) and opposite to the purified air outlet (124), and is used for filtering air entering the first cavity (120) from the purified air outlet (124), the purified air outlet (124) and the dirty air outlet (125) can be selectively opened or closed, the second cavity (130) is provided with an indoor air outlet (131) and an outdoor air outlet (132), the indoor air outlet (131) is used for communicating with indoor air, the outdoor air outlet (132) is used for communicating with outdoor air, and the indoor air outlet (131) and the outdoor air outlet (132) can be selectively opened or closed. The fan blade (140) is a centrifugal fan blade arranged in the second cavity (130), an axial air inlet side of the fan blade (140) faces the air inlet (113), and the indoor air outlet (131) and the outdoor air outlet (132) are located on one side of the fan blade (140) in a radial direction. The first cavity (120) and the second cavity (130) are arranged in a first direction and are separated by a partition plate (112), the air inlet (113) is arranged on the partition plate (112), the first cavity (120) is further provided with a second filter (150), the first cavity (120) comprises a first area (121) and a second area (122), the first area (121) and the second area (122) are separated by the second filter (150), the air inlet (113) and the dirty air outlet (125) are located on a side wall of the first area (121), the purified air outlet (124) is located on a side wall of the second area (122), and the first filter (160) is arranged in the second area (122).

2. The fresh air device according to claim 1, characterized in that, The first cavity (120) and the second cavity (130) are arranged in a first direction and are separated by a partition plate (112), the air inlet (113) is arranged on the partition plate (112), and the dirty air outlet (125) and the purified air outlet (124) are both arranged on a side of the first cavity (120) away from the second cavity (130) in the first direction.

3. The fresh air device according to claim 1, characterized in that, The first cavity (120) is provided with a first support plate (116) and a second support plate (117) on two inner walls opposite in the first direction, respectively, wherein the second support plate (117) is arranged on the partition plate (112), two ends of the second filter element (150) are connected to the first support plate (116) and the second support plate (117), respectively, and the first support plate (116), the second filter element (150) and the second support plate (117) together divide the first cavity (120) into the first region (121) and the second region (122).

4. The fresh air device according to claim 3, characterized in that, The first support plate (116) and the second support plate (117) are different in position in a second direction, the second filter element (150) is plate-shaped and inclined to the first direction and the second direction, in the first direction, one end of the second filter element (150) connected to the second support plate (117) is closer to the partition plate (112) than one end of the second filter element (150) connected to the first support plate (116), and the second direction is perpendicular to the first direction.

5. The fresh air device according to claim 3, characterized in that, The second region (122) is further provided with a third support plate (118), the third support plate (118) and the first support plate (116) are arranged on the inner wall of the same side of the first cavity (120), and the first support plate (116) and the third support plate (118) are located on opposite sides of the purification port (124), respectively, two ends of the first filter element (160) are connected to the first support plate (116) and the third support plate (118), respectively, and cover the purification port (124).

6. The fresh air device according to claim 5, characterized in that, The first support plate (116) and the third support plate (118) are both in sliding fit with the first filter element (160), the shell (110) is provided with a first mounting port, and the first mounting port is used for extracting or loading the first filter element (160) from or into the first cavity (120).

7. The fresh air device according to claim 3, characterized in that, The first support plate (116) and the second support plate (117) are both in sliding fit with the second filter element (150), the shell (110) is provided with a second mounting port, and the second mounting port is used for extracting or loading the second filter element (150) from or into the first cavity (120).

8. The fresh air device according to any one of claims 1-7, characterized in that, The fresh air device (100) further comprises a switching assembly, which is used for selectively opening one of the indoor exhaust port (131) and the outdoor exhaust port (132) and simultaneously sealing the other one.

9. The fresh air device according to claim 8, characterized in that, The switching assembly comprises a first rotary damper (172), which is rotationally connected to an inner wall of the second cavity (130), and can selectively open the indoor exhaust port (131) and simultaneously seal the outdoor exhaust port (132), or open the outdoor exhaust port (132) and simultaneously seal the indoor exhaust port (131) by rotation.

10. The fresh air device according to any one of claims 1-7, characterized in that, A sliding door (126) is arranged on the shell (110), and the sliding door (126) can selectively open one of the dirty air outlet (125) and the purification outlet (124) by sliding.

11. An air conditioner characterized by comprising: The air conditioner comprises an air conditioner main body (200) and the fresh air device (100) according to any one of claims 1-10, and the first cavity (120), the second cavity (130) and the air conditioner main body (200) are sequentially arranged in the length direction of the air conditioner.

Images