Air purifier and filter element service life judgment method

Abstract

The invention discloses an air purifier and a filter element service life judgment method, specifically, the air purifier comprises a body, the body is provided with an air inlet cavity, a filter element is embedded in the air inlet cavity, and the air purifier further comprises a collection assembly; the acquisition assembly is arranged on one side of the body; the collecting assembly is provided with a first air inlet and a second air inlet, the first air inlet and the second air inlet are located in the two sides of the filter element in the thickness direction respectively, the first air inlet is communicated with the air inlet cavity, and the second air inlet is used for being communicated with the external space; the collecting assembly is used for collecting air samples before and after filtration respectively. According to the method, the judgment precision of the service life of the filter element is higher, the filter element can be replaced in time, and waste of the filter element can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to an air purifier and a method for determining the life of a filter element. Background Art

[0002] Existing air purifiers usually have a filter replacement reminder function to facilitate timely replacement of the filter. Some air purifiers use a timed reminder method, that is, to remind you to replace the filter according to the length of use. However, the use environment of each air purifier is different. Replacing the filter only based on the length of use is prone to secondary pollution caused by not replacing the filter in time, and it is also easy to waste the filter due to premature replacement. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an air purifier and a method for determining the life of a filter element, so as to improve the accuracy of the time for replacing the filter element.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: An air purifier, the air purifier comprises a body, the body has an air inlet cavity, a filter element is embedded in the air inlet cavity, and the air purifier further comprises a collection component; The collection component is arranged on one side of the body; The collection component has a first air inlet and a second air inlet, the first air inlet and the second air inlet are respectively located on both sides of the filter element in the thickness direction, and the first air inlet is connected to the air inlet cavity, and the second air inlet is used to communicate with the external space, so that the collection component collects air samples before and after filtration respectively.

[0005] Furthermore, the collection component includes a flip component, a sensor and a three-way valve; The three-way valve has an air outlet, a first air inlet channel and a second air inlet channel; The flip 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.

[0006] Further, the flip assembly includes a drive member and a valve; The driving member is drivingly connected to the valve, and the valve is used to close the outlet end of the first air inlet channel or the outlet end of the second air inlet channel.

[0007] Furthermore, the flip assembly also includes a bracket; The driving member is connected to the outer wall of the three-way valve through a bracket.

[0008] Further, the first air inlet is located at an air inlet end of the first air inlet passage, and the second air inlet is located at an air inlet end of the second air inlet passage.

[0009] Further, the outlet end of the first air inlet channel has a first limiting portion, and the outlet end of the second air inlet channel has a second limiting portion; One end of the valve is drivingly connected to the driving member, and the other end of the valve can be embedded in the first limiting portion or the second limiting portion.

[0010] Furthermore, the driving member is drivingly connected to the valve via a rotating shaft, and one end of the rotating shaft away from the driving member is rotatably plugged into a side wall of the three-way valve.

[0011] Further, the air purifier includes an air inlet net and an air outlet net; The air inlet cavity is arranged at one side of the body, and the air inlet net cover is arranged at one side of the air inlet cavity and covers the outside of the collection component; The air outlet net is arranged on the air outlet side of the body.

[0012] Furthermore, the air purifier also includes a control component; The acquisition component is electrically connected to the control component.

[0013] In order to solve the above technical problems, another technical solution adopted by the present invention is: A method for determining the life of a filter element in the above-mentioned air purifier is characterized by comprising the following steps: S1: Collect air samples before and after purification through a collection component, analyze the air samples before and after purification, and calculate the analyzed data to obtain a filtration efficiency value; S2: If the filtration efficiency is less than 80%-85%, it is determined that the service life of the filter element has expired.

[0014] The beneficial effect of the present invention is that: by setting a collection component, the air before and after purification is collected respectively, and then the filtration efficiency value is obtained, so as to compare the last collected filtration efficiency value with the initial filtration efficiency value, and then the service life of the filter element is more accurately judged. Compared with the prior art, the judgment accuracy of the service life of the filter element is higher, which can ensure that the filter element is replaced in time and avoid the waste of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An exploded view of the air purifier of the present invention; Figure 2 for Figure 1 A magnified view of part A; Figure 3 An exploded view of the acquisition component in the present invention; Figure 4 It is a structural schematic diagram of the air purifier in the present invention; Figure 5 for Figure 4 Section view of the AA plane.

[0016] Description of labels: 1. Main body; 11. Air inlet chamber; 12. Shell; 13. Fan; 2. Collection component; 21. First air inlet; 22. Second air inlet; 23. Turnover component; 231. Driving member; 232. Valve; 233. Bracket; 234. Rotating shaft; 24. Sensor; 241. Detection port; 25. Three-way valve; 251. Air outlet; 252. First air inlet channel; 253. Second air inlet channel; 254. Second limiting part; 255. First limiting part; 256. Cover plate; 257. Valve body; 3. Air inlet net; 4. Air outlet net; 5. Filter element; 6. Control component. DETAILED DESCRIPTION

[0017] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0018] Please refer to Figure 1-Figure 5 , an air purifier, the air purifier comprises a body 1, a collection component 2, an air inlet net 3 and an air outlet net 4; the collection component 2 is embedded in the body 1; the body 1 has an air inlet cavity 11, the air inlet cavity 11 is arranged on one side of the body 1 in the thickness direction, the air inlet net 3 is covered on one side of the air inlet cavity 11 and is covered outside the collection component 2; the air outlet net 4 is arranged on the air outlet side of the body 1; a filter element 5 is embedded in the air inlet cavity 11, and the collection component 2 is arranged on one side of the body 1; the collection component 2 has a first air inlet 21 and a second air inlet 22, the first air inlet 21 and the second air inlet 22 are respectively located on both sides of the filter element 5 in the thickness direction, and the first air inlet 21 is connected with the air inlet cavity 11, and the second air inlet 22 is used to communicate with the external space, so that the collection component 2 collects air samples before and after filtration respectively.

[0019] It is understandable that by setting the collection component 2, the air before and after purification is collected respectively, and then the filtration efficiency value is obtained, so as to more accurately judge the service life of the filter element 5. Compared with the prior art, the judgment accuracy of the service life of the filter element 5 is higher, which can ensure that the filter element 5 is replaced in time and avoid the waste of the filter element 5. Among them, the air before purification refers to the air outside the filter element 5 that has not been purified by the filter element 5, and the air after purification refers to the air that enters the air inlet chamber 11 after being purified by the filter element 5.

[0020] In some embodiments, the collection component 2 includes a flip component 23, a sensor 24 and a three-way valve 25; the three-way valve 25 has an air outlet 251, a first air inlet channel 252 and a second air inlet channel 253; the flip component 23 is used to change the connection relationship between the air outlet 251 and the first air inlet channel 252 and the second air inlet channel 253; the air outlet 251 and the air inlet end of the sensor 24 are arranged relative to each other. By setting the flip component 23, the connection relationship between the air outlet 251 of the three-way valve 25 and the first air inlet channel 252 and the second air inlet channel 253 is changed, and only one sensor 24 can detect the air before and after purification, respectively, reducing the errors caused by the different accuracies of different sensors 24 and improving the measurement accuracy. Preferably, the sensor 24 is a laser dust sensor 24, and other sensors can also be selected in other equivalent embodiments. Among them, the air inlet end of the sensor 24 has a detection port 241.

[0021] In some embodiments, the flip assembly 23 includes a driver 231 and a valve 232; the driver 231 is connected to the valve 232 in a transmission manner, and the valve 232 is used to close the outlet end of the first air inlet channel 252 or the outlet end of the second air inlet channel 253. The valve 232 is controlled by the driver 231, so that the valve 232 changes the connection state between the air outlet 251 and the first air inlet channel 252 and the second air inlet channel 253, thereby realizing that a sensor 24 detects the air quality before and after purification, improves the detection accuracy, and reduces the production cost. Specifically, when the valve 232 blocks the outlet end of the first air inlet channel 252, the second air inlet channel 253 is connected to the air outlet 251, and is used to detect the air before purification, and when the valve 232 blocks the outlet end of the second air inlet channel 253, the first air inlet channel 252 is connected to the air outlet 251, and is used to detect the air after purification. Preferably, the driver 231 is a motor.

[0022] In some embodiments, the flip assembly 23 also includes a bracket 233; the driving member 231 is connected to the outer wall of the three-way valve 25 through the bracket 233, so that the driving member 231 and the three-way valve 25 maintain a relatively stable positional relationship, ensuring the reliability of the valve 232.

[0023] In some embodiments, the first air inlet 21 is located at an air inlet end of the first air inlet passage 252 , and the second air inlet 22 is located at an air inlet end of the second air inlet passage 253 .

[0024] In some embodiments, the outlet end of the first air inlet channel 252 has a first limiter 255, and the outlet end of the second air inlet channel 253 has a second limiter 254; one end of the valve 232 is transmission-connected to the driving member 231, and the other end of the valve 232 can be engaged with the first limiter 254 or the second limiter 255. The first limiter 254 and the second limiter 255 are provided to limit the valve 232, thereby ensuring the blocking effect of the valve 232 on the first air inlet channel 252 and the second air inlet channel 253, and further ensuring the accuracy of the detection result of the sensor 24.

[0025] In some embodiments, the driving member 231 is drivingly connected to the valve 232 via a rotating shaft 234, and one end of the rotating shaft away from the driving member 231 is rotatably plugged into the side wall of the three-way valve 25. Specifically, the three-way valve 25 includes a cover plate 256 and a valve body 257, the cover plate 256 is covered on one side of the valve body 257 to form a first air inlet channel and a second air inlet channel, and the rotating shaft is disposed through the valve body 257 and is relatively rotatably plugged into the cover plate 256.

[0026] In some embodiments, the air inlet net 3 is covered outside the collection component 2 to protect the collection component 2. Specifically, the air inlet net 3 is connected to the body 1 to form a cavity between the air inlet net 3 and the filter element 5, and the second air inlet 22 is connected to the cavity, and the cavity is also connected to the external space, so that the air before purification enters the second air inlet 22.

[0027] In some embodiments, the air purifier further includes a control component 6; the collection component 2 is electrically connected to the control component 6. Specifically, the control component 6 is a control panel, which integrates a display screen and a control circuit. The filtration efficiency value of the air purifier before leaving the factory can be preset in the software of the control panel. Different air purifiers may obtain different filtration efficiency values ​​after testing. The corresponding filtration efficiency value when the particle clean air output ratio is 50% of the initial value can be tested first, and the filtration efficiency value is preset in the control component of the air purifier. When the final measured filtration efficiency is less than the preset filtration efficiency value, it is determined that the service life of the filter element has expired. 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 the wireless terminal through the control component 6, or a buzzer can be used to make a sound to notify the user to replace the filter element 5 in time.

[0028] A method for determining the life of a filter element in the above-mentioned air purifier comprises the following steps: S1: Collect air samples before and after purification respectively through the collection component 2, analyze the air samples before and after purification, and calculate the analyzed data to obtain the filtration efficiency value; S2: If the filtration efficiency is less than 80%-85%, it is determined that the service life of the filter element 5 has expired.

[0029] Embodiment 1 of the present invention is: An air purifier, the air purifier comprises a body 1, a collection component 2, an air inlet net 3 and an air outlet net 4; the collection component 2 is embedded in the body 1; the body 1 has an air inlet cavity 11, the air inlet cavity 11 is arranged on one side of the body 1, the air inlet net 3 is covered on one side of the air inlet cavity 11 and is covered outside the collection component 2; the air outlet net 4 is arranged on the air outlet side of the body 1; a filter element 5 is embedded in the air inlet cavity 11, and the collection component 2 is arranged on one side in the width direction of the body 1; the collection component 2 has a first air inlet 21 and a second air inlet 22, the first air inlet 21 and the second air inlet 22 are respectively located on both sides of the filter element 5 in the thickness direction, and the first air inlet 21 is connected to the air inlet cavity 11, and the second air inlet 22 is used to communicate with the external space, so that the collection component 2 collects air samples before and after filtration respectively. Wherein, the body 1 comprises a shell 12 and a fan 13, and the fan 13 is installed in the shell 11.

[0030] In this embodiment, the collection component 2 includes a flip component 23, a sensor 24 and a three-way valve 25; the three-way valve 25 has an air outlet 251, a first air inlet channel 252 and a second air inlet channel 253; the flip component 23 is used to change the connection relationship between the air outlet 251 and the first air inlet channel 252 and the second air inlet channel 253; the air outlet 251 is arranged relative to the air inlet end of the sensor 24. Preferably, the sensor 24 is a laser dust sensor 24. The sensor 24 detects the concentration of particulate matter in the air before and after purification, and calculates the filtration efficiency value according to the detection result. Among them, the first air inlet 21 is located at the air inlet end of the first air inlet channel 252, and the second air inlet 22 is located at the air inlet end of the second air inlet channel 253.

[0031] In this embodiment, the flip assembly 23 includes a driving member 231, a valve 232 and a bracket 233; the driving member 231 is drivingly connected to the valve 232, and the valve 232 is used to close the outlet end of the first air inlet channel 252 or the outlet end of the second air inlet channel 253; the driving member 231 is connected to the outer wall of the three-way valve 25 through the bracket 233. Preferably, the driving member 231 is a motor.

[0032] In this embodiment, the outlet end of the first air inlet channel 252 has a first limiting portion 255, and the outlet end of the second air inlet channel 253 has a second limiting portion 254; one end of the valve 232 is transmission connected to the driving member 231, and the other end of the valve 232 can be embedded with the first limiting portion 254 or the second limiting portion 255.

[0033] In this embodiment, the driving member 231 is in transmission connection with the valve 232 via a rotating shaft, and one end of the rotating shaft away from the driving member 231 is rotatably plugged into the side wall of the three-way valve 25. Specifically, the three-way valve 25 includes a cover plate 256 and a valve body 257, the cover plate 256 is covered on one side of the valve body 257 to form a first air inlet channel and a second air inlet channel, and the rotating shaft is disposed through the valve body 257 and is relatively rotatably plugged into the cover plate 256.

[0034] In this embodiment, the air purifier further includes a control component 6; the collection component 2 is electrically connected to the control component 6.

[0035] Embodiment 2 of the present invention is: A method for determining the life of a filter element in an air purifier according to the first embodiment comprises the following steps: S1: Collect air samples before and after purification respectively through the collection component 2, analyze the air samples before and after purification, and calculate the analyzed data to obtain the filtration efficiency value; Specifically, the driving member 231 controls the valve 232 to rotate, so that the valve 232 blocks the first air inlet channel 252, and the air outlet 251 is connected to the external space through the second air inlet channel 253. The sensor 24 collects the air sample before purification and analyzes the concentration of particulate matter in the air; The driving member 231 controls the valve 232 to rotate again, so that the valve 232 blocks the second air inlet channel 253, and the air outlet 251 is connected with the air inlet cavity through the first air inlet channel 252. The sensor 24 collects the purified air sample and analyzes the concentration of particulate matter in the purified air. The particle concentrations obtained by analysis before and after purification are calculated to obtain the filtration efficiency; where filtration efficiency = [(particle concentration before purification - particle concentration after purification) / particle concentration before purification] × 100% S2: If the filtration efficiency is less than 82%, it is determined that the service life of the filter element 5 has expired. The filter element was tested for service life, and the test results are as follows: Table 1

[0036] In summary, the present invention provides an air purifier and a method for determining the life of a filter element. The first air inlet and the second air inlet of the collection component are respectively arranged on both sides of the filter element in the thickness direction. The valve is controlled by a driving member to control the connectivity between the first air inlet and the second air inlet and the air outlet, so that the first air inlet and the second air inlet can respectively collect air after purification and air before purification, and then calculate the filtration efficiency, thereby providing data support for determining the life of the filter element and improving the detection accuracy of the filter element life.

[0037] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An air purifier, comprising a body, the body having an air inlet cavity, the air inlet cavity being embedded with a filter element, characterized in that: The air purifier also includes a collection component; The collection component is arranged on one side of the body; The collection component has a first air inlet and a second air inlet, the first air inlet and the second air inlet are respectively located on both sides of the filter element in the thickness direction, and the first air inlet is connected to the air inlet cavity, and the second air inlet is used to communicate with the external space, so that the collection component collects air samples before and after filtration respectively.

2. An air purifier according to claim 1, characterized in that: The collection component includes a flip component, a sensor and a three-way valve; The three-way valve has an air outlet, a first air inlet channel and a second air inlet channel; The flip 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.

3. An air purifier according to claim 2, characterized in that: The flip assembly includes a driving member and a valve; The driving member is drivingly connected to the valve, and the valve is used to close the outlet end of the first air inlet channel or the outlet end of the second air inlet channel.

4. An air purifier according to claim 2, characterized in that: The flip assembly also includes a bracket; The driving member is connected to the outer wall of the three-way valve through a bracket.

5. An air purifier according to claim 2, characterized in that: The first air inlet is located at an air inlet end of the first air inlet passage, and the second air inlet is located at an air inlet end of the second air inlet passage.

6. An air purifier according to claim 3, characterized in that: The outlet end of the first air inlet channel has a first limiting portion, and the outlet end of the second air inlet channel has a second limiting portion; One end of the valve is drivingly connected to the driving member, and the other end of the valve can be embedded in the first limiting portion or the second limiting portion.

7. An air purifier according to claim 3, characterized in that: The driving member is drivingly connected to the valve via a rotating shaft, and one end of the rotating shaft away from the driving member is rotatably plugged into the side wall of the three-way valve.

8. An air purifier according to claim 1, characterized in that: The air purifier comprises an air inlet net and an air outlet net; The air inlet cavity is arranged at one side of the body, and the air inlet net cover is arranged at one side of the air inlet cavity and covers the outside of the collection component; The air outlet net is arranged on the air outlet side of the body.

9. An air purifier according to claim 1, characterized in that: The air purifier also includes a control component; The acquisition component is electrically connected to the control component.

10. A method for determining the life of a filter element in an air purifier according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Collect air samples before and after purification through a collection component, analyze the air samples before and after purification, and calculate the analyzed data to obtain a filtration efficiency value; S2: If the filtration efficiency is less than 80%-85%, it is determined that the service life of the filter element has expired.

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