Air supply equipment and filth blockage detection method thereof

Abstract

The invention provides air supply equipment and a filth blockage detection method thereof. The air supply equipment comprises an air supply body, a filtering assembly and a detection assembly. The air supply body is provided with an air supply channel. The filtering assembly is installed in the air supply channel. The detection assembly comprises a detection fan blade, a resistance piece and a detection piece. The detection fan blade is rotatably installed in the air supply channel. The resistance piece is used for applying resistance to the detection fan blades to prevent the detection fan blades from rotating. The detection piece is in communication connection with the air supply body and used for detecting whether the fan blades rotate or not. According to the air supply equipment, the filth blockage condition of the filter assembly is judged by detecting whether the detection fan blades rotate or not through the detection part, that is, when the rotation torque borne by the detection fan blades is smaller than the resistance, the detection fan blades stop rotating, the detection part generates a rotation stopping signal and feeds back the rotation stopping signal to the air supply main body, and the air supply main body stops working; and a user is reminded to replace the filter assembly in time, so that the failure of the air supply equipment caused by excessive impurities attached to the filter assembly is avoided, and the reliability and safety of the air supply equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air supply equipment, and in particular to an air supply equipment and a dirt and blockage detection method thereof. Background Art

[0002] With the improvement of the quality of life, people pay more and more attention to health, and the requirements for air quality are getting higher and higher. The demand for fans with filtering effects is increasing. Fans with filters can filter out dust, lint and other impurities in the air in advance when blowing, and send out clean and healthy air, which is deeply loved by consumers. However, after using the filter, due to the long-term use of the filter, if it is not replaced in time, dust, lint and other impurities will adhere to the filter, reducing the air permeability, and affecting the fan's air volume, resulting in a greater pressure on the input air volume. If the fan runs in this state for a long time, it will cause the motor and motherboard power to increase, and continuous operation will damage the fan. Summary of the invention

[0003] Based on this, it is necessary to provide an air supply device and a method for detecting dirt and blockage thereof in response to the above-mentioned problems.

[0004] The technical solution is as follows:

[0005] In one aspect, an air supply device is provided, comprising:

[0006] The air supply body is provided with an air supply channel;

[0007] A filter assembly is installed in the air supply channel;

[0008] The detection component includes a detection blade, a resistance member and a detection member. The detection blade is rotatably installed in the air supply channel. The resistance member is used to apply resistance to the detection blade to hinder the rotation of the detection blade. The detection member is communicatively connected with the air supply body and is used to detect whether the detection blade to which resistance is applied rotates.

[0009] The technical solution is further described below:

[0010] In one embodiment, the air supply body includes a rear net and an air duct body provided with the air supply channel, the air supply channel has an air inlet, the rear net is installed on the air inlet, and the detection fan blade is rotatably installed on the rear net.

[0011] In one embodiment, the resistance member includes a first magnetic body and a second magnetic body, the first magnetic body is installed on the detection fan blade, the second magnetic body is installed on the rear net, and the second magnetic body is used to be attracted with the first magnetic body to apply the resistance to the detection fan blade.

[0012] In one embodiment, the detection blade includes a detection blade, and the first magnetic body is disposed on the detection blade;

[0013] And / or, the rear grille is provided with a mounting channel connected to the air inlet, a mounting bracket is provided in the mounting channel, and the detection fan blade and the second magnetic body are both mounted on the mounting bracket.

[0014] In one embodiment, the first magnetic body is configured as a first magnet, the second magnetic body is configured as a second magnet, and the first magnet and the second magnet have opposite magnetic properties.

[0015] In one embodiment, the detection member includes a detection circuit and a conductive contact, the detection circuit is provided with a positive contact and a negative contact, one of the detection circuit and the conductive contact is installed on the detection fan blade, and the other is installed on the rear net, and the conductive contact is configured to be connected and conductive with both the positive contact and the negative contact when the detection fan blade rotates to a preset position relative to the rear net, and to be separated from at least one of the positive contact and the negative contact when the detection fan blade rotates away from the preset position.

[0016] In one embodiment, the detection blade includes a blade body provided with a mounting cavity, the detection circuit is installed in the mounting cavity, and the positive contact and the negative contact both extend from a side of the blade body close to the conductive contact.

[0017] In one of the embodiments, the air supply body further includes an air supply blade rotatably mounted in the air supply channel, and the air supply blade is coaxially arranged with the detection blade.

[0018] In one embodiment, the filter assembly includes a filter bracket and a filter, the filter is installed on the filter bracket, and the filter bracket is fixed in the air supply channel.

[0019] On the other hand, a dirt and blockage detection method is provided, which is applied to the air supply device, comprising:

[0020] The air supply body is energized to generate a wind field in the air supply channel, and the detection blade is driven to rotate by the wind field in the air supply channel;

[0021] The detection component monitors whether the detection fan blade rotates; when the detection component detects that the detection fan blade rotates, the detection component generates a normal signal and feeds back to the air supply body, and the air supply body works normally; when the detection component detects that the detection fan blade stops rotating, the detection component generates a stop signal and feeds back to the air supply body, the air supply body stops working, and reminds the user to replace the filter component in time.

[0022] The air supply device and its dirty blockage detection method in the above-mentioned embodiment, when in use, the air supply body is powered on and works, the air in the external environment is sucked into the air supply channel, and a wind field is generated in the air supply channel, so that the detection blade is passively rotated, and the detection component monitors the rotation state of the detection blade, and the air in the air supply channel is blown out after being filtered by the filter component to provide clean and healthy wind. At this time, the filter component is in the initial use state, and there is no dust and lint in the air on its surface. The air penetration is high, the air volume is large, the rotational torque received by the detection blade is greater than the resistance of the resistance component to the detection blade, the detection blade is passively rotated, the detection component generates a normal signal and feeds back to the air supply body, and the air supply body works normally. As the air supply body continues to work, the amount of impurities such as dust and lint attached to the filter component continues to increase, the air penetration of the filter component gradually decreases, the wind field air volume in the air supply channel gradually decreases, and the rotational torque received by the detection blade gradually decreases. When the rotational torque applied to the detection blade is less than the resistance of the resistance member to the detection blade, the detection blade stops rotating, the detection member generates a stop signal and feeds it back to the air supply body, the air supply body stops working, and reminds the user to replace the filter component in time to avoid malfunction of the air supply equipment due to excessive impurities attached to the filter component, thereby improving the reliability and safety of the air supply equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] FIG. 1 is a schematic structural diagram of an air supply device according to an embodiment.

[0026] FIG. 2 is an exploded view of the air supply device of FIG. 1 .

[0027] FIG. 3 is a schematic structural diagram of the air duct body in FIG. 2 .

[0028] FIG. 4 is a schematic structural diagram of the rear network in FIG. 2 .

[0029] FIG. 5 is a schematic structural diagram of the detection fan and the detection member in FIG. 2 .

[0030] FIG. 6 is a radial cross-sectional view of the detection fan and the detection member in FIG. 5 .

[0031] FIG. 7 is an axial cross-sectional view of part of the rear screen, the detection fan and the detection member in FIG. 2 .

[0032] Description of reference numerals:

[0033] 10. Air supply equipment; 100. Air supply body; 110. Air supply channel; 120. Rear net; 121. Installation channel; 122. Installation bracket; 123. First installation position; 124. Third installation position; 130. Air duct body; 140. Air supply blade; 150. Motor; 160. Blade knob; 170. Front net; 180. Net cover; 200. Filter assembly; 210. Filter bracket; 220. Filter; 300. Detection assembly; 310. Detection blade; 311. Detection blade; 312. Second installation position; 313. Installation cavity; 314. Blade body; 320. Resistance member; 321. First magnetic body; 322. Second magnetic body; 330. Detection member; 331. Detection circuit; 332. Conductive contact; 333. Positive contact; 334. Negative contact. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] As shown in Fig. 1 and Fig. 2, in one embodiment, an air supply device 10 is provided, comprising an air supply body 100, a filter assembly 200 and a detection assembly 300. The air supply body 100 is provided with an air supply channel 110. The filter assembly 200 is installed in the air supply channel 110. The detection assembly 300 comprises a detection blade 310, a resistance member 320 and a detection member 330. The detection blade 310 is rotatably installed in the air supply channel 110. The resistance member 320 is used to apply resistance to the detection blade 310 to hinder the rotation of the detection blade 310. The detection member 330 is connected to the air supply body 100 for communication, and is used to detect whether the detection blade 310 to which resistance is applied rotates.

[0036] When the air supply device 10 in the above embodiment is used, the air supply body 100 is powered on and works, and the air in the external environment is sucked into the air supply channel 110. A wind field is generated in the air supply channel 110, so that the detection blade 310 rotates passively. The detection member 330 monitors the rotation state of the detection blade 310. The air in the air supply channel 110 is filtered by the filter assembly 200 and blown out to provide clean and healthy wind. At this time, the filter assembly 200 is in the initial use state, and there is no dust and lint in the air on its surface. The air penetration is high, the air intake volume is large, the rotation torque of the detection blade 310 is greater than the resistance of the resistance member 320 to the detection blade 310, the detection blade 310 rotates passively, the detection member 330 generates a normal signal and feeds back to the air supply body 100, and the air supply body 100 works normally. As the air supply body 100 continues to work, the amount of impurities such as dust and lint attached to the filter assembly 200 continues to increase, the air penetration of the filter assembly 200 gradually decreases, the wind volume in the air supply channel 110 gradually decreases, and the rotational torque received by the detection blade 310 gradually decreases. When the rotational torque received by the detection blade 310 is less than the resistance of the resistance member 320 to the detection blade 310, the detection blade 310 stops rotating, the detection member 330 generates a stop signal and feeds it back to the air supply body 100, the air supply body 100 stops working, and reminds the user to replace the filter assembly 200 in time, so as to avoid the air supply device 10 from malfunctioning due to excessive impurities attached to the filter assembly 200, thereby improving the reliability and safety of the air supply device 10.

[0037] It should be noted that the detection blade 310 will not rotate actively after being powered on. The resistance applied by the resistance member 320 to the detection blade 310 can be flexibly adjusted according to actual use needs, thereby adjusting the maximum amount of impurities attached to the filter assembly 200.

[0038] The air supply body 100 can be configured as any structure for air supply in the prior art. The filter assembly 200 can be configured as any filter structure in the prior art that can filter impurities such as dust and fluff in the air.

[0039] Specifically in this embodiment, the filter assembly 200 is detachably installed in the air supply channel 110. The filter assembly 200 includes a filter support 210 and a filter 220. The filter 220 is installed on the filter support 210, and the filter support 210 is fixed in the air supply channel 110. In this way, the convenience of assembling the filter assembly 200 is improved.

[0040] The number of detection components 300 can be flexibly adjusted according to the needs of actual use. The relative positions of the filter component 200 and the detection vane 310 in the air supply channel 110 can be flexibly adjusted according to the needs of actual use. For example, along the axial direction of the air supply channel 110, the detection vane 310 can be installed on the side of the filter component 200 close to the air inlet, or on the side of the filter component 200 away from the air inlet, or the detection vane 310 can be set on both sides of the filter component 200.

[0041] As shown in Fig. 2, Fig. 3 and Fig. 4, optionally, the air supply body 100 includes a rear net 120 and an air duct body 130 provided with an air supply channel 110, the air supply channel 110 has an air inlet, the rear net 120 is installed at the air inlet, and the detection vane 310 is rotatably installed on the rear net 120. In this way, the detection vane 310 can be pre-installed on the rear net 120, and then installed in the air supply channel 110 through the rear net 120, thereby improving the convenience of assembly of the air supply device 10.

[0042] As shown in FIG. 2 , in one embodiment, the resistance member 320 includes a first magnetic body 321 and a second magnetic body 322 . The first magnetic body 321 is installed on the detection fan blade 310 , and the second magnetic body 322 is installed on the rear net 120 . The second magnetic body 322 is used to be attracted to the first magnetic body 321 to apply resistance to the detection fan blade 310 .

[0043] Among them, the number of the first magnetic body 321 and the number of the second magnetic body 322 can be flexibly adjusted according to the needs of actual use. One of the first magnetic body 321 and the second magnetic body 322 is set as a first magnet, and the other is set as a second magnet or a magnetic metal part that can be attracted by the first magnet. Specifically in this embodiment, the first magnetic body 321 is set as a first magnet, and the second magnetic body 322 is set as a second magnet, and the magnetic properties of the first magnet and the second magnet are opposite. In this way, the second magnetic body 322 can apply stable and reliable resistance to the detection fan blade 310 through the first magnetic body 321, thereby improving the reliability of the air supply device 10.

[0044] It should be noted that the second magnetic body 322 may continuously apply resistance to the detection blade 310 through the first magnetic body 321 , or may intermittently apply resistance to the detection blade 310 through the first magnetic body 321 .

[0045] As shown in Fig. 2 and Fig. 5, optionally, the detection blade 310 includes a detection blade 311, and the first magnetic body 321 is disposed on the detection blade 311. In this way, the second magnetic body 322 intermittently applies resistance to the detection blade 310 through the first magnetic body 321, so that the detection blade 310 can rotate at a higher speed, and the first magnetic body 321 can pass through the magnetic attraction area of ​​the second magnetic body 322 at a faster speed, ensuring that the detection blade 310 rotates smoothly.

[0046] As shown in Fig. 2, Fig. 6 and Fig. 7, optionally, the rear net 120 is provided with a mounting channel 121 communicating with the air inlet, and a mounting bracket 122 is provided in the mounting channel 121, and the detection blade 310 and the second magnetic body 322 are both mounted on the mounting bracket 122. In this way, the convenience of assembling the air supply device 10 is improved.

[0047] Specifically in this embodiment, the mounting bracket 122 is disposed at one end of the mounting channel 121 close to the air inlet. The detection blade 310 is mounted on a side of the mounting bracket 122 away from the air inlet and is located in the mounting channel 121.

[0048] As shown in Fig. 2, Fig. 4 and Fig. 5, specifically in this embodiment, the mounting bracket 122 is provided with a first mounting position 123 for mounting the detection blade 310. The detection blade 311 is provided with a second mounting position 312 for mounting the first magnetic body 321. The mounting bracket 122 is also provided with a third mounting position 124 corresponding to the second mounting position 312, and the third mounting position 124 is used to mount the second magnetic body 322.

[0049] In other embodiments, the resistance member 320 may also apply resistance to the detection blade 310 by frictionally engaging with the detection blade 310 or other methods.

[0050] As shown in Figures 4, 5 and 7, in one embodiment, the detection member 330 includes a detection circuit 331 and a conductive contact 332, the detection circuit 331 is provided with a positive contact 333 and a negative contact 334, one of the detection circuit 331 and the conductive contact 332 is installed on the detection fan blade 310, and the other is installed on the rear mesh 120, and the conductive contact 332 is configured to be connected and conductive with both the positive contact 333 and the negative contact 334 when the detection fan blade 310 rotates to a preset position relative to the rear mesh 120 (i.e., the position of the detection fan blade 310 relative to the rear mesh 120 as shown in Figure 7), and to be separated from at least one of the positive contact 333 and the negative contact 334 when the detection fan blade 310 rotates away from the preset position.

[0051] Specifically in this embodiment, when the detection blade 310 rotates to a preset position relative to the rear net 120, the conductive contact 332 is connected to the positive contact 333 and the negative contact 334, and the first magnetic body 321 and the second magnetic body 322 are correspondingly attracted. When the detection blade 310 rotates away from the preset position, the conductive contact 332 is separated from at least one of the positive contact 333 and the negative contact 334, and the first magnetic body 321 and the second magnetic body 322 are separated.

[0052] In other embodiments, the detection member 330 may also be configured as a camera, a rotation speed sensor, or other devices capable of detecting whether the fan blade 310 is rotating.

[0053] As shown in Fig. 6 and Fig. 7, optionally, the detection blade 310 includes a blade body 314 provided with a mounting cavity 313, the detection circuit 331 is mounted in the mounting cavity 313, and the positive contact 333 and the negative contact 334 both extend from one side of the blade body 314 close to the conductive contact 332. In this way, the detection blade 310 can protect the detection circuit 331 and improve the reliability of the air supply device 10.

[0054] Specifically in this embodiment, a first mounting hole and a second mounting hole corresponding to the second magnetic body 322 are provided on one side of the fan blade body 314 close to the second magnetic body 322, and the first mounting hole and the second mounting hole are both connected to the mounting cavity 313, and the positive contact 333 extends out of the fan blade body 314 from the first mounting hole, and the negative contact 334 extends out of the fan blade body 314 from the second mounting hole.

[0055] As shown in FIG. 2 , in one embodiment, the air supply body 100 further includes an air supply blade 140 rotatably installed in the air supply channel 110 , and the air supply blade 140 is coaxially arranged with the detection blade 310 .

[0056] As shown in Figures 2 and 3, specifically in this embodiment, the air supply body 100 also includes a motor 150 and a fan knob 160. The inner side wall of the air supply channel 110 is provided with a first bracket for installing the motor 150, and a mounting groove for installing the filter assembly 200. The output shaft of the motor 150 is suspended along the axial direction of the air supply channel 110. The air supply fan blades 140 are sleeved on the output shaft and are connected to the output shaft in a transmission manner. The fan knob 160 is installed on the output shaft to fix the air supply fan blades 140 on the output shaft. When the motor 150 is powered on to rotate the output shaft at a high speed, the air supply fan blades 140 will rotate synchronously with the rotation direction of the output shaft, thereby achieving an air supply effect.

[0057] As shown in FIG. 2 and FIG. 3 , specifically in this embodiment, the air supply body 100 further includes a front net 170 and a mesh cover 180, and the air supply channel 110 further has an air outlet arranged opposite to the inlet and outlet, and the front net 170 is installed at the air outlet. The mesh cover 180 is installed at the side of the installation channel 121 away from the air inlet. When the motor 150 is powered on, the motor 150 drives the air supply blades 140 to rotate, and the air in the external environment is sucked into the air supply channel 110 through the rear net 120, the mesh cover 180 and the filter net 220, respectively, so that a wind field is generated in the air supply channel 110. In addition, the front net 170, the rear net 120 and the mesh cover 180 can prevent the user's fingers from reaching into the air supply channel 110, thereby improving the safety of the air supply device 10.

[0058] In one embodiment, a dirt and blockage detection method is also provided, which is applied to the air supply device 10 in any of the above embodiments. The dirt and blockage detection method comprises at least the following steps:

[0059] S100, the air supply body 100 is powered on to generate a wind field in the air supply channel 110, and the detection blade 310 is driven to rotate by the wind field in the air supply channel 110;

[0060] S200, the detection component 330 monitors whether the detection fan blade 310 is rotating; when the detection component 330 detects that the detection fan blade 310 is rotating, the detection component 330 generates a normal signal and feeds back to the air supply body 100, and the air supply body 100 works normally; when the detection component 330 detects that the detection fan blade 310 stops rotating, the detection component 330 generates a stop signal and feeds back to the air supply body 100, the air supply body 100 stops working, and reminds the user to replace the filter component 200 in time.

[0061] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0062] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0064] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0065] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0066] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0067] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An air supply device, characterized in that: include: The air supply body (100) is provided with an air supply channel (110); A filter assembly (200) installed in the air supply channel (110); The detection assembly (300) comprises a detection blade (310), a resistance member (320) and a detection member (330); the detection blade (310) is rotatably mounted in the air supply channel (110); the resistance member (320) is used to apply resistance to the detection blade (310) to prevent the detection blade (310) from rotating; the detection member (330) is communicatively connected to the air supply body (100) and is used to detect whether the detection blade (310) to which resistance is applied rotates.

2. The air supply device according to claim 1, characterized in that: The air supply body (100) comprises a rear net (120) and an air duct body (130) provided with the air supply channel (110); the air supply channel (110) has an air inlet; the rear net (120) is mounted on the air inlet; and the detection blade (310) is rotatably mounted on the rear net (120).

3. The air supply device according to claim 2, characterized in that: The resistance member (320) comprises a first magnetic body (321) and a second magnetic body (322); the first magnetic body (321) is mounted on the detection fan blade (310); the second magnetic body (322) is mounted on the rear net (120); the second magnetic body (322) is used to be attracted to the first magnetic body (321) so as to apply the resistance to the detection fan blade (310).

4. The air supply device according to claim 3, characterized in that: The detection blade (310) comprises a detection blade (311), and the first magnetic body (321) is arranged on the detection blade (311); And / or, the rear net (120) is provided with a mounting channel (121) communicating with the air inlet, a mounting bracket (122) is provided in the mounting channel (121), and the detection fan blade (310) and the second magnetic body (322) are both mounted on the mounting bracket (122).

5. The air supply device according to claim 3, characterized in that: The first magnetic body (321) is configured as a first magnet, and the second magnetic body (322) is configured as a second magnet, and the first magnet and the second magnet have opposite magnetic properties.

6. The air supply device according to any one of claims 2 to 5, characterized in that: The detection member (330) comprises a detection circuit (331) and a conductive contact (332); the detection circuit (331) is provided with a positive contact (333) and a negative contact (334); one of the detection circuit (331) and the conductive contact (332) is mounted on the detection fan blade (310), and the other is mounted on the rear net (120); the conductive contact (332) is configured to be connected and conducted with both the positive contact (333) and the negative contact (334) when the detection fan blade (310) rotates to a preset position relative to the rear net (120), and to be separated from at least one of the positive contact (333) and the negative contact (334) when the detection fan blade (310) rotates away from the preset position.

7. The air supply device according to claim 6, characterized in that: The detection fan blade (310) comprises a fan blade body (314) provided with a mounting cavity (313), the detection circuit (331) being mounted in the mounting cavity (313), and the positive contact (333) and the negative contact (334) both extending from a side of the fan blade body (314) close to the conductive contact (332).

8. The air supply device according to any one of claims 1 to 5, characterized in that: The air supply body (100) further comprises an air supply blade (140) rotatably mounted in the air supply channel (110), wherein the air supply blade (140) is coaxially arranged with the detection blade (310).

9. The air supply device according to any one of claims 1 to 5, characterized in that: The filter assembly (200) comprises a filter support (210) and a filter (220); the filter (220) is mounted on the filter support (210); and the filter support (210) is fixed in the air supply channel (110).

10. A dirt and blockage detection method, applied to the air supply device (10) according to any one of claims 1 to 9, characterized in that: include: The air supply body (100) is energized to generate a wind field in the air supply channel (110), and the detection blade (310) is driven to rotate by the wind field in the air supply channel (110); The detection component (330) monitors whether the detection blade (310) rotates; when the detection component (330) detects that the detection blade (310) rotates, the detection component (330) generates a normal signal and feeds back to the air supply body (100), and the air supply body (100) operates normally; when the detection component (330) detects that the detection blade (310) stops rotating, the detection component (330) generates a stop signal and feeds back to the air supply body (100), and the air supply body (100) stops operating, and reminds a user to replace the filter assembly (200) in a timely manner.

Images