Air collecting assembly

Abstract

The utility model discloses an air collecting assembly, the air collecting assembly is installed in an air purifier, the air purifier comprises a main body, the main body is provided with an air inlet cavity, a filter element is embedded in the air inlet cavity, and the air collecting assembly comprises an overturning assembly, a sensor and a three-way valve; the three-way valve is provided with an air outlet, a first air inlet channel used for being communicated with the air inlet cavity and a second air inlet channel used for being communicated with the external space. The air inlet end of the first air inlet channel and the air inlet end of the second air inlet channel are located on the two sides of the filter element in the thickness direction respectively. The overturning assembly is used for changing the communication relation between the air outlet and the first air inlet channel and the communication relation between the air outlet and the second air inlet channel. And the air outlet is opposite to the air inlet end of the sensor. Compared with the prior art, the service life judgment precision of the filter element is higher, it can be ensured that the filter element is replaced in time, and waste of the filter element can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to an air collection component. Background Technology

[0002] Most air purifiers have a filter replacement reminder function to facilitate timely filter replacement. Some air purifiers use timed reminders, which remind you to replace the filter based on usage time. However, each air purifier is used in different environments, and relying solely on usage time to replace the filter can easily lead to secondary pollution due to delayed filter replacement, or premature filter replacement resulting in waste. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an air collection component that improves the accuracy of filter replacement time.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An air collection component is installed inside an air purifier. The air purifier includes a main body with an air inlet cavity and a filter element embedded therein. The air collection component includes a flip-up component, a sensor, and a three-way valve.

[0006] The three-way valve has an air outlet, a first air inlet channel for communicating with the air inlet chamber, and a second air inlet channel for communicating with the external space.

[0007] The air intake end of the first air intake channel and the air intake end of the second air intake channel are located on both sides of the filter element thickness direction, respectively.

[0008] The flipping component is used to change the connection relationship between the air outlet and the first air inlet channel and the second air inlet channel;

[0009] The air outlet is positioned opposite to the air inlet of the sensor.

[0010] Furthermore, the flipping assembly includes a drive element and a valve;

[0011] The drive component is connected to the valve, and the valve is used to close the outlet end of the first air intake channel or the outlet end of the second air intake channel.

[0012] Furthermore, the flipping assembly also includes a support;

[0013] The drive component is connected to the outer wall of the three-way valve via a bracket.

[0014] Furthermore, the drive component is connected to the valve via a rotating shaft, and the end of the rotating shaft away from the drive component is rotatably inserted into the side wall of the three-way valve.

[0015] Furthermore, the valve's flip angle is greater than or equal to 90°.

[0016] Furthermore, the outlet end of the first air intake channel has a first limiting part, and the outlet end of the second air intake channel has a second limiting part;

[0017] One end of the valve is connected to the drive component, and the other end of the valve can be engaged with the first limiting part or the second limiting part.

[0018] Furthermore, the three-way valve includes a cover plate and a valve body. The cover plate is disposed on one side of the valve body to form the first air inlet channel and the second air inlet channel. The rotating shaft passes through the valve body and is rotatably inserted into the cover plate.

[0019] Furthermore, the air purifier includes an air inlet grille and an air outlet grille;

[0020] The air inlet cavity is located on one side of the main body, and the air inlet mesh cover is located on one side of the air inlet cavity and covers the air collection component.

[0021] The air outlet mesh is located on the air outlet side of the main body.

[0022] Furthermore, a cavity is formed between the air inlet mesh and the filter element, and the cavity is connected to the second air intake channel.

[0023] Furthermore, the air purifier also includes a control component;

[0024] The air collection component is electrically connected to the control component.

[0025] The beneficial effects of this invention are as follows: By incorporating an air collection component within the air purifier, and utilizing a flip-up component to alter the connection between the outlet of the three-way valve and the first and second air inlet channels, air is collected before and after purification, respectively, thereby obtaining a filtration efficiency value. This allows for a more accurate assessment of the filter's lifespan. Furthermore, due to the flip-up component and the three-way valve, filter lifespan detection can be achieved using only a single sensor. Compared to existing technologies, this invention offers higher accuracy in determining filter lifespan, ensuring timely filter replacement while preventing filter waste. Attached Figure Description

[0026] Figure 1 This is an exploded view of the air purifier in this utility model;

[0027] Figure 2 for Figure 1 Enlarged view of section A;

[0028] Figure 3 This is an exploded view of the air collection component in this utility model;

[0029] Figure 4 This is a schematic diagram of the air purifier in this utility model;

[0030] Figure 5 for Figure 4 A cross-sectional view of plane AA.

[0031] Label Explanation:

[0032] 1. Main body; 11. Air inlet cavity; 12. Housing; 13. Fan;

[0033] 2. Air collection assembly; 21. Tilting assembly; 211. Drive component; 212. Valve; 213. Bracket; 214. Rotating shaft; 22. Sensor; 221. Detection port; 23. Three-way valve; 231. Air outlet; 232. First air inlet channel; 233. Second air inlet channel; 234. First limiting part; 235. Second limiting part; 236. Cover plate; 237. Valve body;

[0034] 3. Air inlet screen; 4. Air outlet screen; 5. Filter element; 6. Control components; 7. Cavity. Detailed Implementation

[0035] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0036] Please refer to Figures 1-5An air collection component 2 is installed inside an air purifier. The air purifier includes a main body, an air inlet mesh 3, and an air outlet mesh 4. The main body has an air inlet cavity 11, in which a filter element 5 is embedded. The air inlet cavity 11 is located on one side of the main body 1, and the air inlet mesh 3 covers one side of the air inlet cavity 11 and the air collection component 2. The air outlet mesh 4 is located on the air outlet side of the main body 1. The air collection component 2 includes a flipping component 21, a sensor 22, and a three-way valve 23. Valve 23 has an air outlet 231, a first air inlet channel 232 for communicating with the air inlet chamber 11, and a second air inlet channel 233 for communicating with the external space; the air inlet ends of the first air inlet channel 232 and the second air inlet channel 233 are respectively located on both sides in the thickness direction of the filter element 5; the flipping assembly 21 is used to change the communication relationship between the air outlet 231 and the first air inlet channel 232 and the second air inlet channel 233; the air outlet 231 is arranged opposite to the air inlet end of the sensor 22. Preferably, the sensor 22 is a laser dust sensor 22. The air inlet end of the sensor 22 is provided with a detection port 221, and the air outlet 231 is arranged opposite to the detection port 221.

[0037] Understandably, by installing an air collection component 2 inside the air purifier, and due to the inclusion of a flip component 21, the connection between the air outlet 231 of the three-way valve 23 and the first and second air intake channels 232 is changed, allowing for the collection of air before and after purification. This yields a filtration efficiency value, which is then compared to the filtration efficiency value set at the factory. If the value is less than the set value, the filter element's lifespan is considered to have expired, providing a more accurate assessment of the filter element's lifespan. Furthermore, the flip component 21 and the three-way valve 23 enable filter element lifespan detection using only one sensor 22, reducing errors caused by varying sensor accuracies and improving measurement precision. Compared to existing technologies, this method offers higher accuracy in determining the filter element's lifespan, ensuring timely replacement and preventing waste. The filtration efficiency is calculated as: [(particulate matter concentration before purification - particulate matter concentration after purification) / particulate matter concentration before purification] × 100%.

[0038] In some embodiments, the flipping assembly 21 includes a drive member 211 and a valve 212; the drive member 211 is tractively connected to the valve 212, and the valve 212 is used to close the outlet end of the first air intake channel 232 or the outlet end of the second air intake channel 233. By controlling the valve 212 through the drive member 211, the valve 212 changes the connection state between the outlet 231 and the first air intake channel 232 and the second air intake channel 233, thereby enabling a single sensor 22 to detect the air quality before and after purification, improving detection accuracy and reducing production costs. Specifically, when the valve 212 blocks the outlet end of the first air intake channel 232, the second air intake channel 233 is connected to the outlet 231, which is used to detect the air before purification; conversely, when the valve 212 blocks the outlet end of the second air intake channel 233, the first air intake channel 232 is connected to the outlet 231, which is used to detect the air after purification. Preferably, the drive member 211 is a motor.

[0039] In some embodiments, the flipping assembly 21 further includes a bracket 213; the drive member 211 is connected to the outer wall of the three-way valve 23 through the bracket 213, so that the drive member 211 and the three-way valve 23 maintain a relatively stable positional relationship, ensuring the reliability of the valve 212.

[0040] In some embodiments, the drive member 211 is connected to the valve 212 via a rotating shaft 214, and one end of the rotating shaft 214 away from the drive member 211 is rotatably inserted into the side wall of the three-way valve 23. Specifically, the three-way valve 23 includes a cover plate 236 and a valve body 237. The cover plate 236 covers one side of the valve body 237 to form a first air inlet channel and a second air inlet channel. The rotating shaft 214 passes through the valve body 237 and is rotatably inserted into the cover plate 236.

[0041] In some embodiments, the flip angle of valve 212 is greater than or equal to 90°. Preferably, the flip angle is 90° to 120°, and further, the flip angle is 100°. If the flip angle of valve 212 is too small, the coverage area of ​​the air outlet 231 will be reduced accordingly, affecting the detection results.

[0042] In some embodiments, the outlet end of the first air intake channel 232 has a first limiting portion 235, and the outlet end of the second air intake channel 233 has a second limiting portion 234; one end of the valve 212 is connected to the drive member 211, and the other end of the valve 212 can be engaged with the first limiting portion 234 or the second limiting portion 235. The first limiting portion 234 and the second limiting portion 235 are provided to limit the valve 212, ensuring the sealing effect of the valve 212 on the first air intake channel 232 and the second air intake channel 233, thereby ensuring the accuracy of the detection results of the sensor 22.

[0043] In some embodiments, a cavity 7 is formed between the air inlet mesh 3 and the filter element 5. The cavity 7 is connected to the second air inlet channel 233, which allows the air before purification to enter the second air inlet channel 233 and also protects the second air inlet channel 233.

[0044] In some embodiments, the air purifier further includes a control component 6; the air collection component 2 is electrically connected to the control component 6. Specifically, the control component 6 is a control panel that integrates a display screen and control circuitry. The filtration efficiency value of the air purifier before it leaves the factory can be preset in the software of the control panel. Different air purifiers may yield different filtration efficiency values ​​after testing. The filtration efficiency value corresponding to 50% of the initial value when the particulate matter clean air output ratio is tested can be preset in the control component of the air purifier. When the measured filtration efficiency is less than the set filtration efficiency value, the filter element is determined to have reached the end of its service life. For example, when the air collection component 2 determines that the filtration efficiency value of the filter element 5 is less than 80%-85%, it can be displayed on the control component 6, or a reminder to replace the filter element 5 can be sent to a wireless terminal through the control component 6, or an audible sound can be emitted through a buzzer to notify the user to replace the filter element 5 in time.

[0045] Embodiment 1 of this utility model is as follows:

[0046] An air collection component 2 is installed inside an air purifier. The air purifier includes a main body, an air inlet mesh 3, and an air outlet mesh 4. The main body has an air inlet cavity 11, in which a filter element 5 is embedded. The air inlet cavity 11 is located on one side of the main body 1, and the air inlet mesh 3 covers one side of the air inlet cavity 11 and the air collection component 2. The air outlet mesh 4 is located on the air outlet side of the main body 1. The air collection component 2 includes a flipping component 21, a sensor 22, and a three-way valve 23. The three-way valve 23 has an air outlet 231, a first air inlet channel 232 for communicating with the air inlet cavity 11, and a second air inlet channel 233 for communicating with the external space. The air inlet ends of the first air inlet channel 232 and the second air inlet channel 233 are located on opposite sides of the filter element 5 in the thickness direction. The flipping component 21 is used to change the communication relationship between the air outlet 231 and the first air inlet channel 232 and the second air inlet channel 233. The air outlet 231 is arranged opposite to the air inlet end of the sensor 22. Preferably, the sensor 22 is a laser dust sensor 22. A cavity 7 is formed between the air inlet mesh 3 and the filter element 5, and the cavity 7 is connected to the second air inlet channel 233. The main body includes a housing 12 and a fan 13, with the fan 13 installed inside the housing 12.

[0047] In this embodiment, the flipping assembly 21 includes a drive component 211, a valve 212, and a bracket 213. The drive component 211 is operatively connected to the valve 212, which is used to close the outlet end of the first air intake channel 232 or the outlet end of the second air intake channel 233. Specifically, when the valve 212 blocks the outlet end of the first air intake channel 232, the second air intake channel 233 is connected to the outlet 231, which is used to detect the air before purification. When the valve 212 blocks the outlet end of the second air intake channel 233, the first air intake channel 232 is connected to the outlet 231, which is used to detect the air after purification. Preferably, the drive component 211 is a motor.

[0048] In this embodiment, the drive component 211 is connected to the valve 212 via a rotating shaft 214. The end of the rotating shaft 214 away from the drive component 211 is rotatably inserted into the side wall of the three-way valve 23. Specifically, the three-way valve 23 includes a cover plate 236 and a valve body 237. The cover plate 236 covers one side of the valve body 237 to form a first air inlet channel and a second air inlet channel. The rotating shaft 214 passes through the valve body 237 and is rotatably inserted into the cover plate 236.

[0049] In this embodiment, the valve 212 has a flip angle of 100°.

[0050] In this embodiment, the outlet end of the first air intake channel 232 has a first limiting part 234, and the outlet end of the second air intake channel 233 has a second limiting part 235; one end of the valve 212 is connected to the drive member 211 for transmission, and the other end of the valve 212 can be engaged with the first limiting part 234 or the second limiting part 235.

[0051] In this embodiment, the air purifier also includes a control component 6; the air collection component 2 is electrically connected to the control component 6. Specifically, the control component 6 is a control panel that integrates a display screen and control circuitry. When the air collection component 2 determines that the filtration efficiency of the filter element 5 is less than 80%-85%, it can display this information on the control component 6.

[0052] The working principle of this utility model is as follows:

[0053] The drive unit 211 controls the valve 212 to rotate, causing the valve 212 to block the first air intake channel 232. The air outlet 231 is connected to the external space through the second air intake channel 233. The sensor 22 collects air samples before purification and analyzes the concentration of particulate matter in the air.

[0054] After a certain period of time, the drive unit 211 controls the valve 212 to rotate again, so that the valve 212 blocks the second air intake channel 233. The air outlet 231 is connected to the air intake chamber through the first air intake channel 232. The sensor 22 collects the purified air sample and analyzes the particulate matter concentration in the purified air.

[0055] The filtration efficiency is obtained by calculating the particulate matter concentrations obtained from the analysis before and after purification.

[0056] If the obtained filtration efficiency value is less than 80%-85%, then the filter element 5 is deemed to have reached the end of its service life.

[0057] In summary, the present invention provides a data acquisition module in which the air intake ends of the first and second air intake channels of the air acquisition component are respectively located on both sides of the filter element thickness direction. The valves are controlled by a drive component to control the connection state between the first and second air intake channels and the air outlet, so that the first and second air intake channels can collect purified and unpurified air respectively, thereby calculating the filtration efficiency, providing data support for the lifespan determination of the filter element, and improving the detection accuracy of the filter element lifespan.

[0058] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An air collection assembly installed in an air cleaner, the air cleaner comprising a main body having an air inlet cavity in which a filter cartridge is embedded, characterized in that, The air collection assembly comprises a turnover assembly, a sensor and a three-way valve; The three-way valve has an air outlet, a first air inlet channel for communicating with the air inlet cavity and a second air inlet channel for communicating with an external space; The air inlet ends of the first air inlet channel and the second air inlet channel are respectively located on two sides in the filter core thickness direction; The turnover assembly is used to change the communication relationship between the air outlet and the first air inlet channel and the second air inlet channel; The air outlet is arranged opposite to the air inlet end of the sensor.

2. An air acquisition assembly according to claim 1, wherein, The turnover assembly comprises a driving member and a valve; The driving member is in transmission connection with the valve, and the valve is used to close the air outlet end of the first air inlet channel or the air outlet end of the second air inlet channel.

3. An air acquisition assembly according to claim 2, wherein, The turnover assembly further comprises a bracket; The driving member is connected with the outer wall of the three-way valve through the bracket.

4. An air acquisition assembly according to claim 2, wherein, The driving member is in transmission connection with the valve through a rotating shaft, and one end of the rotating shaft away from the driving member is rotatably inserted into the side wall of the three-way valve.

5. An air acquisition assembly according to claim 4, wherein, The turnover angle of the valve is greater than or equal to 90°.

6. An air acquisition assembly according to claim 2, wherein, The air outlet end of the first air inlet channel has a first limiting part, and the air outlet end of the second air inlet channel has a second limiting part; One end of the valve is in transmission connection with the driving member, and the other end of the valve can be fitted with the first limiting part or the second limiting part.

7. An air acquisition assembly according to claim 4, wherein, The three-way valve comprises a cover plate and a valve body, the cover plate is arranged on one side of the valve body to form the first air inlet channel and the second air inlet channel, and the rotating shaft is arranged through the valve body and is relatively rotatably inserted into the cover plate.

8. An air acquisition assembly according to claim 1, wherein, The air purifier comprises an air inlet net and an air outlet net; The air inlet cavity is arranged on one side of the main body, the air inlet net is arranged on one side of the air inlet cavity and covers the outside of the air collection assembly, and the air outlet net is arranged on the air outlet side of the main body. The air inlet net and the filter core form a cavity, and the cavity communicates with the second air inlet channel.

9. An air acquisition assembly according to claim 8, wherein, The air purifier further comprises a control assembly; 10. An air acquisition assembly according to claim 1, wherein, The air collection assembly is electrically connected with the control assembly. ​

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