Air purifier filter element and air purifier

Abstract

The utility model discloses an air purifier filter element and an air purifier. The filter element of the air purifier is used for being detachably installed in a machine body of the air purifier, the machine body is provided with a circuit, a switch component and a filter element detection piece, and the switch component and the filter element detection piece can control the on-off of the circuit; the air purifier filter element comprises a filter main body, a filter frame and a trigger piece, only when the switch component is closed and the filter element of the air purifier is mounted on the machine body to enable the trigger element to trigger the filter element detection element, the circuit is switched from the off state to the on state. According to the utility model, the circuit of the machine body can be automatically switched on only when the filter element is mounted, and is automatically switched off after the filter element is dismounted, so that the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of air purifiers, in particular to an air purifier filter element and an air purifier using the filter element. Background Art

[0002] An air purifier is a device that separates / removes one or more pollutants from the air. Most of them achieve the separation / removal of pollutants through a filter element installed in the body. In existing air purifiers, when the filter element is installed in the body, there is no corresponding detection structure to detect whether the filter element has been installed. As a result, if the power supply is forgotten to be disconnected when replacing the filter element, the air purifier is still in working state, and replacing the filter element at this time will cause hidden dangers. Utility Model Content

[0003] In view of the deficiencies of the above-mentioned prior art, the first aspect of the utility model discloses an air purifier filter element, which is used to be detachably installed in the body of an air purifier, and the body is provided with a circuit, a switch component and a filter element detection component; the air purifier filter element comprises a filter body, a filter frame and a trigger component; the circuit is switched from an off state to an on state only when the switch component is closed and the air purifier filter element is installed in the body so that the trigger component triggers the filter element detection component.

[0004] Optionally, the trigger member is arranged at one end or two opposite ends of the filter frame.

[0005] Optionally, the trigger member protrudes from the filter frame.

[0006] Optionally, the filter frame is provided at one end, two opposite ends of the filter body, or the entire side edge of the filter body.

[0007] Optionally, the filter frame is made of hard material or metal.

[0008] Optionally, the filter frame is provided with a stopper strip that contacts the air outlet surface of the filter body and spans the filter body.

[0009] Optionally, the air purifier filter element and the body are detachably adhered together by Velcro.

[0010] Optionally, one end or two opposite ends of the air purifier filter element include at least one mounting positioning member disposed on the filter frame.

[0011] Optionally, the installation positioning member is formed into a plate-shaped or columnar rib, and the installation positioning member is detachably connected to the filter frame or has an integrally formed structure.

[0012] Optionally, the mounting positioning member is provided with a guiding surface.

[0013] The second aspect of the utility model discloses an air purifier, which includes a body provided with a filter cavity; the filter cavity is provided with any one of the air purifier filter elements described above, the body is provided with a circuit, a switch component and a filter element detection component, and the switch component and the filter element detection component can both control the on and off of the circuit.

[0014] Optionally, the filter element detection member is movably arranged relative to the body, and the body is provided with an elastic reset member acting on the filter element detection member; when the air purifier filter element is installed to the body, the trigger member abuts against the filter element detection member, so that the filter element detection member overcomes the elastic force of the elastic reset member and moves.

[0015] In the utility model, when the filter element is installed in the body, the filter element detection part on the body is triggered, so that it can be detected whether the filter element is installed correctly. Only when the switch component is closed and the air purifier filter element is installed in the body so that the trigger element triggers the filter element detection part, the circuit of the body is switched from the disconnected state to the on state, and after the filter element is removed from the body, the circuit of the body is switched from the on state to the disconnected state, so as to improve the safety of use.

[0016] In order to more clearly illustrate the purpose, technical solutions and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a first exploded structural schematic diagram of the air purifier in Example 1;

[0018] Figure 2 is a second exploded structural schematic diagram of the air purifier in Example 1;

[0019] Figure 3 is a schematic structural diagram of the air purifier filter element in Example 1;

[0020] Figure 4 is a schematic diagram of the partial structure of the air purifier body in Example 1;

[0021] Figure 5 is a schematic diagram of the structure of the air purifier filter element in Example 2;

[0022] Figure 6 is a schematic structural diagram of the air purifier filter element in Example 3;

[0023] Figure 7 is a schematic diagram of the structure of the air purifier filter element from a first perspective in Example 4;

[0024] Figure 8 It is a schematic diagram of the structure of the air purifier filter element from a second perspective in Example 4. DETAILED DESCRIPTION

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but it is easy for those skilled in the art to understand that the present invention can also be implemented in other ways different from those described herein. Therefore, other possible implementation methods that can be known by those skilled in the art based on the embodiments described in this application all belong to the protection scope of this application.

[0026] Example 1

[0027] like Figure 1 and Figure 2 As shown, the air purifier of the embodiment includes a body 11, a cover 12 and a filter element 20. The body 11 is provided with a filter cavity 111, and the filter element 20 is detachably arranged in the filter cavity 111 of the body 11. The filter element 20 can be rectangular as a whole, but is not limited thereto, for example, a circular or elliptical filter element can also be used.

[0028] The cover 12 is connected to the body 11 and is configured to cover the filter cavity 111 and the filter element 20. The cover 12 may be provided with a connection protrusion 120, and the body 11 is correspondingly provided with a connection groove 113, and the connection protrusion 120 is inserted into the connection groove 113 to achieve a detachable connection between the cover 12 and the body 11. The body 11 and the cover 12 may be provided with air flow channels such as air holes (not shown in the figure) to achieve internal and external circulation of gas.

[0029] The filter element 20 includes a filter body 21 such as a filter screen and a filter frame 22 connected to the filter body 21, wherein the filter frame 22 can be arranged at one end, two opposite ends, or the entire side edge of the filter body 21. Preferably, the filter body 21 and the filter frame 22 adopt a detachable connection structure, so that the filter frame 22 can be reused when the filter body 21 is replaced, thereby reducing the use cost.

[0030] In Embodiment 1, the filter frame 22 may be made of a hard material or metal. The filter frame 22 having a certain rigidity and being sufficient to bear the filter body 21 has the advantage that the filter element 20 is not easily deformed during use.

[0031] In Example 1, Figure 2 and 3 As shown, the filter frame 22 is arranged along the entire side edge of the filter body 21, for example, it has a rectangular outer frame 221 in contact with the side wall of the filter body 21. The filter body 21 has an air inlet surface 21a and an air outlet surface 21b. Under the action of the fan in the body 11, the airflow enters the filter body 21 from the air inlet surface 21a, and escapes from the filter body 21 from the air outlet surface 21b after purification. Preferably, the filter frame 22 does not cover the air inlet surface 21a of the filter body 21 to increase the effective use area of ​​the filter body 21.

[0032] like Figure 3 As shown, the filter frame 22 is also provided with a rib 222 and a stop bar 223. The rib 222 is arranged along the edge of the air outlet surface 21b of the filter body 21 and contacts the air outlet surface 21b. The stop bar 223 contacts the air outlet surface 21b of the filter body 21 and spans the filter body 21. During the operation of the air purifier, the rib 222 and the stop bar 223 can resist the force of the airflow on the filter body 21 to better support the filter body 21 and reduce the deformation of the filter body 21 under the airflow. The stop bar 223 can be one or more. For example, a stop bar 223 can be arranged in the middle of the filter body 21 in the length direction. As shown in FIG. Figure 3 As shown, the filter element 20 is also provided with a trigger member 23, which is arranged on the filter frame 22 and can protrude outward from the filter frame 22. The trigger member 22 can be fixedly or movably connected to the filter frame 22, or can have an integrally formed structure with the filter frame 22. Furthermore, the trigger member 23 can be arranged only at one end (for example, the lower end) of the filter frame 22, or can be arranged at opposite ends of the filter frame 22 (for example, the upper and lower ends or the left and right ends), so that the filter element 20 can be switched for use at the opposite ends, thereby improving the convenience of use. Specifically, the trigger member 23 protrudes from the filter frame 22, and the trigger member 23 can be a cylindrical protrusion or other structure, which is not specifically limited here.

[0033] Furthermore, the body 11 is provided with a circuit, a switch component and a filter element detection component 31, and both the switch component and the filter element detection component 31 can control the on-off of the circuit. It should be noted that the switch component is a power switch of the air purifier.

[0034] like Figure 4 As shown, the body 11 is provided with an elastic reset member 32 acting on the filter element detection member 31. The elastic reset member 32 is preferably a spring, but is not limited thereto. For example, an elastic member such as sponge or rubber may also be used. The filter element detection member 31 is movably arranged relative to the body 11. When the filter element 20 is installed in the filter chamber 111 of the body 11, the filter element detection member 31 can abut against the trigger member 23. At this time, the filter element detection member 31 overcomes the elastic force of the elastic reset member 32 and moves, so that it can be judged that the filter element 20 is correctly installed. Among them, only when the switch component is closed and the filter element 20 is installed in the body 11 so that the trigger member 23 triggers the filter element detection member 31, the circuit of the body 11 is switched from the disconnected state to the on state, and the body 11 can work normally. After the filter element 20 is removed from the body 11, the filter element detection member 31 is reset and disconnected from the circuit of the body 11 under the action of the elastic reset member 32 to improve the safety of use.

[0035] In a specific embodiment, Figure 4As shown, the filter element detection member 31 is provided with a rotating shaft 311, a triggered portion 312 and a columnar protrusion 313. The rotating shaft 311 is rotatably connected to the body 11 so that the filter element detection member 31 is rotatably arranged relative to the body 11; the columnar protrusion 313 is connected to an elastic reset member 32 such as a spring. At least a portion of the filter element detection member 31 is arranged in the groove 112 of the body 11, and the triggered portion 312 can protrude to the outside of the groove 112 and abut against the trigger member 23 when the filter element 20 is installed in the body 11. As a variation of the above-mentioned specific embodiment, the filter element detection member 31 can also be arranged to be slidably arranged relative to the body 11.

[0036] In other embodiments of the present invention, filter element detection can also adopt sensing elements such as switch-type sensing elements, pressure sensors, Hall sensors, etc. When the filter element 20 is installed in the body 11, the trigger element 23 can be sensed and detected by the sensing element; after the body 11 is connected to the power supply, and when the filter element 20 is installed and the switch component is closed, the circuit of the body 11 is turned on, the motor in the body 11 is started, and then the body 11 can work normally; correspondingly, when the filter element 20 is removed from the body 11, the sensing element cannot detect the filter element 20, and the body 11 stops working, which can also play the role of filter element installation detection and safety protection.

[0037] If the filter element detection adopts a switch-type sensor, the columnar protrusion 313 is provided with a conductive sheet, and the corresponding position of the body 11 is also provided with a conductive sheet. When the filter element 20 is inserted into the body 11, the filter element detection member 31 overcomes the action of the elastic reset member 32 and swings downward, so that the conductive sheet at the bottom of the columnar protrusion 313 contacts the conductive sheet of the body, and when the switch component is closed, the circuit is turned on.

[0038] If a pressure sensor is used for filter element detection, a pressure sensor is provided at the bottom position of the columnar protrusion 313 inside the body 11. When the filter element detection component 31 is swung downward, the pressure sensor detects the pressure change, that is, sends a signal to the controller. When the switch component is closed, the controller determines that the pressure sensor signal has been received and the switch is closed, and then the circuit is turned on.

[0039] If the filter element detection adopts the Hall sensor, the columnar protrusion 313 is provided with a magnet, and the Hall sensor is installed at the corresponding position inside the body 11. When the filter element detection part 31 is swung down, the Hall sensor detects the change of the magnetic field and sends the change signal to the controller. When the switch component is closed, the controller determines that the Hall sensor signal has been received and the switch is closed, and then the circuit is turned on.

[0040] The above circuit principles that are not described in detail are prior art and will not be described in detail.

[0041] Furthermore, at least one end of the filter element 20 is provided with one or more mounting and positioning members 24, and the mounting and positioning members 24 may have an integrally formed structure with the filter frame 22, or may be detachably connected to the filter frame 22. Figure 2 As shown, the installation positioning member 24 can be a plate-shaped or columnar rib, and the extension direction of the rib is preferably parallel to the installation direction or thickness direction of the filter element 20.

[0042] The body 11 is provided with a positioning groove 114 that cooperates with the installation positioning member 24. When the filter element 20 is installed in the body 11, the installation positioning member 24 is inserted into the positioning groove 114 to fix the filter element 20. Preferably, as Figure 3 As shown, the installation positioning member 24 is provided with a guide surface 241 such as a chamfer at the downstream end of the filter element 20 in the installation direction (that is, the end located at the air outlet surface 21 b ) to facilitate its smooth insertion into the positioning groove 114 .

[0043] Preferably, in order to allow the filter element 20 to be used at the two opposite ends arbitrarily switched and to improve the installation convenience of the filter element 20, one or more installation positioning members 23 can be symmetrically arranged at the two opposite ends (e.g., the left and right ends or the upper and lower ends) of the filter element 20. Figure 2 The mounting locating member 23 shown can be arranged at the middle position of the upper and lower ends of the filter element 20. More preferably, multiple mounting locating members 23 can be arranged at opposite ends of the filter element 20 (for example, two mounting locating members 23 are arranged at the upper and lower ends of the filter element 20) to achieve better positioning and balancing effects.

[0044] Preferably, the filter element 20 and the body 11 can be further detachably bonded together by Velcro, so that the installation of the filter element 20 is more stable and reliable, and does not affect the smooth removal of the filter element 20. Velcro can be provided on the retaining edge 222 of the filter frame 22, and Velcro bonded thereto can be correspondingly provided inside the body 11.

[0045] Example 2

[0046] The difference between Example 2 and Example 1 is the filter element 20. Figure 5 As shown, the filter frame 22 disposed on the periphery of the filter body 21 in Embodiment 2 is made of a relatively soft material such as sponge or rubber, and includes an outer frame 221 and a retaining edge 222 .

[0047] Preferably, one end or two opposite ends of the filter frame 22 in embodiment 2 are provided with mounting locators 24. As a variation of embodiment 2, the filter frame 22 may also not be provided with mounting locators 24, but directly form elastic contact with the side wall of the filter cavity 111 to achieve the fixation of the filter element 20.

[0048] Example 3

[0049] The difference between Example 3 and Example 1 is that the filter element structure is different. In Example 3, the filter element 120 includes a filter body 121 such as a filter screen and a split filter frame, which is composed of filter frames 122 arranged at opposite ends of the filter body 121; wherein, one end or two opposite ends (such as upper and lower ends or left and right ends) of the filter frame 122 is provided with a trigger member 123. Furthermore, one end or two opposite ends (such as upper and lower ends or left and right ends) of the filter frame 122 is provided with one or more installation positioning members 124.

[0050] Specifically, Figure 6 and Figure 7 As shown, a trigger member 123 is provided at the lower end of the filter frame 122, and a mounting positioning member 124 is provided at the middle position of the upper and lower ends of the filter frame 122. The filter frame 122 does not cover the air inlet surface 121a of the filter body 121 to increase the effective use area of ​​the filter body 121; the end of the air outlet surface 121b of the filter body 121 can contact the filter frame 122 to enhance the support effect of the filter frame 122 on the filter body 121.

[0051] Example 4

[0052] like Figure 8 As shown, the difference between Example 4 and Example 1 is that the triggering member on the filter frame 20 in Example 4 is the filter frame 20 body, and there is no need to add a protruding structure.

[0053] When the filter element 20 is installed to the body 11, the filter frame 20 directly abuts against the side wall of the filter chamber 111 to fix the filter element 20; at the same time, the filter frame 20 directly abuts against the filter element detection member 31, so that the filter element detection member 31 overcomes the elastic force of the elastic reset member 32 and moves. When the switch component is closed and energized, the circuit of the body 11 is switched from the disconnected state to the on state.

[0054] It should be noted that, for the sake of simplicity, the specification omits some of the same contents in different embodiments. Therefore, unless there is a contradiction or exclusion, the different embodiments disclosed above can be referenced, referred to or combined with each other, and the technical features / components of different embodiments can also be combined and / or replaced with each other.

[0055] Although the utility model is disclosed as above with preferred embodiments, it is not intended to limit the scope of implementation of the utility model. Any changes made by ordinary technicians in the field according to the utility model without departing from the scope of the invention of the utility model should be covered by the protection scope of the utility model.

Claims

1. An air purifier filter element, which is used to be detachably installed in the body of the air purifier, wherein the body is provided with a circuit, a switch component and a filter element detection component, wherein both the switch component and the filter element detection component can control the on and off of the circuit; the air purifier filter element comprises a filter body and a filter frame, and is characterized in that: The air purifier filter element is provided with a trigger component; the circuit is switched from the disconnected state to the on state only when the switch component is closed and the air purifier filter element is installed to the body so that the trigger component triggers the filter element detection component.

2. The air purifier filter element according to claim 1, characterized in that: The triggering member is arranged at one end or two opposite ends of the filter frame.

3. The air purifier filter element according to claim 2, characterized in that: The trigger member protrudes from the filter frame.

4. The air purifier filter element according to claim 1, characterized in that: The filter frame is provided at one end, two opposite ends or the entire side edge of the filter body.

5. The air purifier filter element according to claim 1, characterized in that: The filter frame is made of hard material or metal.

6. The air purifier filter element according to claim 1, characterized in that: The filter frame is provided with a stopper strip which contacts the air outlet surface of the filter body and spans across the filter body; the air purifier filter element and the body are detachably adhered together by Velcro.

7. The air purifier filter element according to any one of claims 1 to 6, characterized in that: One end or two opposite ends of the air purifier filter element include at least one mounting positioning member arranged on the filter frame.

8. The air purifier filter element according to claim 7, characterized in that: The installation positioning member forms a plate-shaped or columnar rib, and the installation positioning member is detachably connected to the filter frame or is integrally formed; the installation positioning member is provided with a guide surface.

9. An air purifier, comprising a body provided with a filter chamber; characterized in that: The filter cavity is provided with an air purifier filter element as described in any one of claims 1 to 8, and the body is provided with a circuit, a switch component and a filter element detection component, and both the switch component and the filter element detection component can control the on and off of the circuit.

10. The air purifier according to claim 9, characterized in that: The filter element detection component is movably arranged relative to the body, and the body is provided with an elastic reset component acting on the filter element detection component; when the air purifier filter element is installed to the body, the trigger component abuts against the filter element detection component, so that the filter element detection component overcomes the elastic force of the elastic reset component and moves.

Images