Dust collection cabin detection device and cleaning equipment

By adopting a dual-beam sensor arrangement in the cleaning equipment, the problem of inaccurate dust collection chamber detection was solved, achieving higher detection accuracy and a lower false alarm rate for non-full chambers.

CN224247914UActive Publication Date: 2026-05-15BEIJING XIAOMI MOBILE SOFTWARE CO LTD +1
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Filing Date
2025-03-17
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The dust collection chamber detection mechanism of existing cleaning equipment is not arranged properly, resulting in inaccurate detection, low detection accuracy, and a tendency to generate false alarms when the chamber is not full.

Method used

A dual-beam sensor arrangement is adopted, with the first receiver and the second transmitter located on one side of the housing, and the second receiver and the first transmitter located on the other side of the housing, to avoid optical path interference and improve detection accuracy.

Benefits of technology

This improved the accuracy of dust collection chamber detection, reduced the probability of false alarms due to non-full chambers, and enhanced the reliability of the detection device.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224247914U_ABST
    Figure CN224247914U_ABST
Patent Text Reader

Abstract

The utility model relates to a dust collection cabin detection device and cleaning equipment, the dust collection cabin detection device comprises a shell, a first correlation sensor and a second correlation sensor, a dust collection cabin is arranged in the shell, the first correlation sensor comprises a first receiver and a first emitter, and the second correlation sensor comprises a second receiver and a second emitter. The second correlation sensor comprises a second receiver and a second emitter, and correlation light paths of the first receiver and the first emitter and correlation light paths of the second receiver and the second emitter are arranged at intervals and pass through the dust collection cabin; the first receiver and the second transmitter are located on one side of the shell, and the second receiver and the first transmitter are located on the other side of the shell. The detection precision of the dust collection cabin detection device is high, and the probability of false alarm of non-full cabin of the dust collection cabin detection device can be reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, specifically to a dust collection chamber detection device and a cleaning equipment. Background Technology

[0002] Cleaning equipment such as robot vacuums, dust collectors, and mite removers all have internal dust collection chambers to collect dust, particulate matter, hair, and other impurities picked up during cleaning. However, in related technologies, the dust collection chamber's fullness detection mechanism is poorly designed, resulting in inaccurate detection and low precision. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a dust collection chamber detection device, which has high detection accuracy and can reduce the probability of false alarms when the dust collection chamber is not full.

[0005] An embodiment of this utility model also proposes a cleaning device.

[0006] The dust collection chamber detection device of this utility model includes: a housing, in which a dust collection chamber is disposed; a first through-beam sensor and a second through-beam sensor, the first through-beam sensor including a first receiver and a first transmitter, the second through-beam sensor including a second receiver and a second transmitter, the through-beam optical paths of the first receiver and the first transmitter and the through-beam optical paths of the second receiver and the second transmitter being arranged at intervals and both passing through the dust collection chamber, the first receiver and the second transmitter being located on one side of the housing, and the second receiver and the first transmitter being located on the other side of the housing.

[0007] According to the dust collection chamber detection device of this utility model, since the dust collection chamber detection device is equipped with a first through-beam sensor and a second through-beam sensor, compared with the scheme of setting a single through-beam sensor, the detection accuracy of the dust collection chamber detection device can be improved, and the probability of false alarms caused by a single foreign object blocking the through-beam optical path can be reduced. In addition, since the first receiver and the second transmitter are located on one side of the housing, and the second receiver and the first transmitter are located on the other side of the housing, mutual interference between the through-beam optical paths of the first and second through-beam sensors can be avoided, which is beneficial to improving the overall detection accuracy of the dust collection chamber detection device, thereby reducing the probability of false alarms of the dust collection chamber detection device being incomplete.

[0008] In some embodiments, both the first receiver and the second receiver are infrared receivers, and both the first transmitter and the second transmitter are infrared transmitters.

[0009] In some embodiments, the transmission angle of the first transmitter and the second transmitter is α, and the reception angle of the first receiver and the second receiver is β, wherein α≤15° and β≤60°.

[0010] In some embodiments, the distance between the first receiver and the second transmitter is L, the distance between the first receiver and the first transmitter is H, and the transmission angle of the first transmitter and the second transmitter is α, wherein L > 2*H*tan(α / 2).

[0011] In some embodiments, the housing is provided with two detection chambers, which are respectively arranged on opposite sides of the dust collection chamber. The first receiver and the second transmitter are disposed in one detection chamber, and the second receiver and the first transmitter are disposed in the other detection chamber.

[0012] In some embodiments, a partition is provided between the detection chamber and the dust collection chamber, and the partition is provided with a first through-hole and a second through-hole. The through-hole of the first receiver and the first transmitter passes through the first through-hole, and the through-hole of the second receiver and the second transmitter passes through the second through-hole.

[0013] In some embodiments, light-transmitting sheets are installed at the positions of the first and second apertures.

[0014] In some embodiments, a light-transmitting plate is provided between the detection chamber and the dust collection chamber, and the light paths of the first receiver and the first transmitter, as well as the light paths of the second receiver and the second transmitter, can all pass through the light-transmitting plate.

[0015] In some embodiments, the dust collection chamber detection device further includes a straight plate filter element, the filter surface of which is planar, and the first through-beam sensor and the second through-beam sensor are arranged at intervals along a direction parallel to the filter surface of the straight plate filter element.

[0016] In some embodiments, the dust collection chamber detection device further includes a cylindrical filter element, the filter surface of which is cylindrical, and the first through-beam sensor and the second through-beam sensor are arranged at intervals along the axial direction of the cylindrical filter element.

[0017] Another embodiment of the cleaning device of this utility model includes a cleaning body and a dust collection chamber detection device, wherein the dust collection chamber detection device is the dust collection chamber detection device described in any one of the embodiments of this utility model, and the dust collection chamber is disposed inside the cleaning body.

[0018] According to the cleaning equipment of this utility model, since the dust collection chamber detection device is equipped with a first and a second through-beam sensor, compared with a scheme using a single through-beam sensor, the detection accuracy of the dust collection chamber detection device can be improved, and the probability of false alarms caused by a single foreign object blocking the through-beam optical path can be reduced. Furthermore, since the first receiver and the second transmitter are located on one side of the housing, and the second receiver and the first transmitter are located on the other side of the housing, mutual interference between the through-beam optical paths of the first and second through-beam sensors can be avoided, which is beneficial to improving the overall detection accuracy of the dust collection chamber detection device, thereby reducing the probability of false alarms due to the dust collection chamber not being full.

[0019] In some embodiments, the dust collection chamber is detachably connected to the cleaning body. Attached Figure Description

[0020] Figure 1 This is a diagram showing the arrangement of the first and second through-beam sensors of the dust collection chamber detection device according to an embodiment of this utility model.

[0021] Figure 2 This is a schematic diagram of a dust collection chamber detection device according to an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the straight plate filter element of the dust collection chamber detection device according to an embodiment of this utility model.

[0023] Figure 4 This is a schematic diagram of a dust collection chamber detection device according to another embodiment of the present invention.

[0024] Figure 5 This is a front view of the dust collection chamber detection device according to an embodiment of this utility model.

[0025] Figure 6 This is a top view of the dust collection chamber detection device according to an embodiment of this utility model.

[0026] Figure label:

[0027] 1. Shell; 11. Dust collection chamber; 12. Detection chamber; 13. Partition; 131. First through-hole; 132. Second through-hole; 14. Light-transmitting sheet;

[0028] 2. First through-beam sensor; 21. First receiver; 22. First transmitter;

[0029] 3. Second through-beam sensor; 31. Second receiver; 32. Second transmitter;

[0030] 41. First circuit board; 42. Second circuit board;

[0031] 5. Straight filter element; 51. Avoidance notch;

[0032] 6. Cylindrical filter element. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] The following is a reference appendix. Figures 1 to 6 This invention describes a dust collection chamber detection device and a cleaning device according to embodiments of the present invention.

[0035] like Figure 1 and Figure 2 As shown, the dust collection chamber detection device of this utility model embodiment includes: a housing 1, a first through-beam sensor 2, and a second through-beam sensor 3.

[0036] The housing 1 is provided with a dust collection chamber 11. The first through-beam sensor 2 includes a first receiver 21 and a first transmitter 22. The second through-beam sensor 3 includes a second receiver 31 and a second transmitter 32. The through-beam optical paths of the first receiver 21 and the first transmitter 22 and the through-beam optical paths of the second receiver 31 and the second transmitter 32 are arranged at intervals and all pass through the dust collection chamber 11. The first receiver 21 and the second transmitter 32 are located on one side of the housing 1, and the second receiver 31 and the first transmitter 22 are located on the other side of the housing 1.

[0037] It is understood that the first receiver 21 and the second transmitter 32 are located on the same side of the housing 1, and the second transmitter 32 and the first receiver 21 are located on the same other side of the housing 1. That is, the transmitting and receiving ends of the first through-beam sensor 2 and the second through-beam sensor 3 are arranged in opposite directions.

[0038] According to the dust collection chamber detection device of this utility model, since the dust collection chamber detection device is equipped with a first through-beam sensor 2 and a second through-beam sensor 3, compared with the scheme of setting a single through-beam sensor, the detection accuracy of the dust collection chamber detection device can be improved, and the probability of false triggering caused by a single foreign object blocking the through-beam optical path can be reduced. It is understood that the dust collection chamber detection device of this utility model will only issue a full alarm signal when the through-beam optical paths of the first receiver 21 and the first transmitter 22, as well as the through-beam optical paths of the second receiver 31 and the second transmitter 32, are all blocked by foreign objects.

[0039] Furthermore, since the first receiver 21 and the second transmitter 32 are located on one side of the housing 1, and the second receiver 31 and the first transmitter 22 are located on the other side of the housing 1, mutual interference between the optical paths of the first through-beam sensor 2 and the second through-beam sensor 3 can be avoided. This is beneficial to improving the overall detection accuracy of the dust collection chamber detection device, thereby reducing the probability of false alarms due to the dust collection chamber not being full.

[0040] In related technologies, the transmitting and receiving ends of the first and second through-beam sensors 2 and 3 are arranged in the same direction, i.e., the first transmitter 22 and the second transmitter 32 are located on the same side of the housing 1, and the second receiver 31 is located on the other side of the housing 1. Since both the first transmitter 22 and the second transmitter 32 have a certain emission angle, when the installation distance between the first and second through-beam sensors 2 and 3 is too close, there is a problem that the light emitted by the first transmitter 22 may be received by the second receiver 31, or vice versa. Therefore, there is optical path interference between the first and second through-beam sensors 2 and 3, which reduces the detection accuracy. Furthermore, the installation space required for the first and second through-beam sensors 2 and 3 is relatively large, which is not conducive to the arrangement of components.

[0041] In the dust collection chamber detection device of this embodiment, the first receiver 21 and the second transmitter 32 are located on the same side of the housing 1, while the second transmitter 32 and the first receiver 21 are located on the other side of the housing 1. This avoids mutual interference between the through-beam optical paths of the first through-beam sensor 2 and the second through-beam sensor 3. Furthermore, it reduces the installation distance between the first through-beam sensor 2 and the second through-beam sensor 3, facilitating the arrangement of components within the housing 1.

[0042] In one example, such as Figure 2 As shown, the first receiver 21 and the second transmitter 32 are disposed on the first circuit board 41, and the first transmitter 22 and the second receiver 31 are disposed on the second circuit board 42. The first circuit board 41 and the second circuit board 42 are arranged opposite to each other on both sides of the housing 1 to facilitate the assembly of the dust collection chamber detection device.

[0043] It should be noted that the dust collection chamber detection device may also include a third through-beam sensor (not shown) and a fourth through-beam sensor (not shown), or more through-beam sensors and other types of sensors. This utility model does not limit the number of sensors.

[0044] Optionally, both the first receiver 21 and the second receiver 31 are infrared receivers, and both the first transmitter 22 and the second transmitter 32 are infrared transmitters. In other words, both the first receiver 21 and the second receiver 31 are infrared receiving diodes, and both the first transmitter 22 and the second transmitter 32 are infrared emitting diodes. This can improve the detection effect of the first through-beam sensor 2 and the second through-beam sensor 3, and the structure is simple and the cost is low.

[0045] Optionally, such as Figure 1 As shown, the transmission angle of the first transmitter 22 and the second transmitter 32 is α, and the reception angle of the first receiver 21 and the second receiver 31 is β, where α ≤ 15° and β ≤ 60°. For example, the angle of α can be 5°, 10°, or 15°. The angle of β can be 20°, 40°, or 60°.

[0046] Understandably, the emission angle α of the first transmitter 22 and the second transmitter 32 should be smaller to avoid excessive dispersion of the optical power generated by the large-angle transmitter, which could cause receivers with the same sensitivity to fail to trigger beyond a certain distance. The receiving angle β of the first receiver 21 and the second receiver 31 should be appropriately larger, but less than or equal to 60°, to avoid the first receiver 21 mistakenly receiving the signal from the second transmitter 32, and to avoid the second receiver 31 mistakenly receiving the signal from the first transmitter 22, thereby ensuring the reliability of signal reception by the first receiver 21 and the second receiver 31.

[0047] In one example, such as Figure 1 As shown, the distance between the first receiver 21 and the second transmitter 32 is L, the distance between the second receiver 31 and the first transmitter 22 is also L, the distance between the first receiver 21 and the first transmitter 22 is H, and the emission angles of the first transmitter 22 and the second transmitter 32 are both α, where L > 2*H*tan(α / 2). It is understood that the arrangement distance L between the first receiver 21 and the second transmitter 32 (the arrangement distance L between the second receiver 31 and the first transmitter 22) needs to satisfy the above relationship to ensure that the through-beam optical paths of the first through-beam sensor 2 and the second through-beam sensor 3 are not interfered with, resulting in high detection accuracy.

[0048] In some embodiments, such as Figure 2 and Figure 4As shown, the housing 1 has two detection chambers 12, which are respectively arranged on opposite sides of the dust collection chamber 11. The first receiver 21 and the second transmitter 32 are located in one detection chamber 12, and the second receiver 31 and the first transmitter 22 are located in the other detection chamber 12. It can be understood that the first through-beam sensor 2 and the second through-beam sensor 3 are not arranged inside the dust collection chamber 11 to prevent the first through-beam sensor 2 and the second through-beam sensor 3 from obstructing the filtration of foreign objects, which helps to reduce the probability of false alarms when the dust collection chamber detection device is not full.

[0049] Optionally, such as Figure 2 and Figure 4 As shown, a partition 13 is provided between the detection chamber 12 and the dust collection chamber 11. The partition 13 has a first through-beam aperture 131 and a second through-beam aperture 132. The through-beam optical paths of the first receiver 21 and the first transmitter 22 pass through the first through-beam aperture 131, and the through-beam optical paths of the second receiver 31 and the second transmitter 32 pass through the second through-beam aperture 132. It can be understood that the partition 13 can reduce the probability of foreign objects entering the detection chamber 12, thereby further improving the reliability of the first through-beam sensor 2 and the second through-beam sensor 3 during operation. It has little impact on the through-beam optical paths of the first through-beam sensor 2 and the second through-beam sensor 3, making the detection more accurate.

[0050] In one example, such as Figure 2 As shown, a light-transmitting sheet 14 is installed at the positions of the first pair of emission holes 131 and the second pair of emission holes 132. The light-transmitting sheet 14 can be fixed to the first pair of emission holes 131 and the second pair of emission holes 132 by means of adhesive bonding, snap-fit, or screwing. The light-transmitting sheet 14 can be installed on the side of the partition 13 adjacent to the dust collection chamber 11, or on the side of the partition 13 adjacent to the detection chamber 12, to seal the first pair of emission holes 131 and the second pair of emission holes 132. This can prevent foreign objects from passing through the first pair of emission holes 131 and the second pair of emission holes 132 and entering the detection chamber 12, thereby further improving the reliability of the first pair of emission sensors 2 and the second pair of emission sensors 3 during operation.

[0051] For example, the light-transmitting sheet 14 is a transparent acrylic sheet or glass sheet.

[0052] In another example, a light-transmitting plate (not shown) is provided between the detection chamber 12 and the dust collection chamber. The through-beam light paths of the first receiver 21 and the first transmitter 22, as well as the through-beam light paths of the second receiver 31 and the second transmitter 32, can all pass through the light-transmitting plate. It is understood that the light-transmitting plate is enclosed between the detection chamber 12 and the dust collection chamber to prevent foreign objects from entering the detection chamber 12, thereby improving the detection effect of the first through-beam sensor 2 and the second through-beam sensor 3.

[0053] Optionally, such as Figure 2 and Figure 3As shown, the dust collection chamber detection device also includes a straight plate filter element 5. The filter surface of the straight plate filter element 5 is a plane. It can be understood that the straight plate filter element 5 has a cubic structure. The surface of the straight plate filter element 5 along its thickness direction is the filter surface, and the filter surface is a straight surface.

[0054] The first through-beam sensor 2 and the second through-beam sensor 3 are arranged at intervals along a direction parallel to the filter surface of the straight filter element 5. It can be understood that the through-beam optical paths of the first through-beam sensor 2 and the second through-beam sensor 3 are close to and parallel to the filter surface of the straight filter element 5, thereby enabling the detection of the thickness of foreign matter accumulation on the straight filter element 5. Because the first through-beam sensor 2 and the second through-beam sensor 3 are arranged at intervals along a direction parallel to the filter surface of the straight filter element 5, the probability of a single foreign object blocking the through-beam optical path and causing false triggering can be reduced.

[0055] In one example, such as Figure 3 As shown, the straight plate filter element 5 is provided with an avoidance notch 51, which is used for the through-beam optical path of the first through-beam sensor 2 and the second through-beam sensor 3.

[0056] Optionally, such as Figures 4 to 6 As shown, the dust collection chamber detection device also includes a cylindrical filter element 6. The filter surface of the cylindrical filter element 6 is cylindrical. It can be understood that the cylindrical filter element 6 is generally cylindrical in structure, with both its inner and outer walls being cylindrical filter surfaces. The airflow containing impurities within the cleaning equipment flows from the outer to the inner side of the cylindrical filter element 6 to adsorb and filter the impurities in the airflow.

[0057] The first through-beam sensor 2 and the second through-beam sensor 3 are arranged at intervals along the axial direction of the cylindrical filter element 6. It can be understood that the first through-beam sensor 2 and the second through-beam sensor 3 can detect the thickness of foreign matter accumulation on the outer wall of the cylindrical filter element 6. When the thickness of foreign matter accumulation on the outer wall of the cylindrical filter element 6 reaches a certain value, it will block the through-beam light path of the first through-beam sensor 2 and the second through-beam sensor 3, thereby triggering the dust collection chamber detection device's mite alarm program.

[0058] Another embodiment of the cleaning equipment of this utility model includes a cleaning body and a dust collection chamber detection device. The dust collection chamber detection device is the dust collection chamber detection device of this utility model, and the dust collection chamber is located inside the cleaning body.

[0059] According to the cleaning equipment of this utility model, since the dust collection chamber detection device is equipped with a first through-beam sensor 2 and a second through-beam sensor 3, compared with the scheme of setting a single through-beam sensor, the detection accuracy of the dust collection chamber detection device can be improved, and the probability of false alarms caused by a single foreign object blocking the through-beam optical path can be reduced. In addition, since the first receiver 21 and the second transmitter 32 are located on one side of the housing 1, and the second receiver 31 and the first transmitter 22 are located on the other side of the housing 1, the through-beam optical paths of the first through-beam sensor 2 and the second through-beam sensor 3 can avoid mutual interference, which is beneficial to improving the overall detection accuracy of the dust collection chamber detection device, thereby reducing the probability of false alarms of the dust collection chamber detection device being incomplete.

[0060] Optionally, the dust collection chamber 11 is detachably connected to the cleaning body to facilitate cleaning of the dust collection chamber 11 by the user, improving user convenience. For example, the dust collection chamber 11 and the cleaning body can be connected by a snap-fit ​​mechanism.

[0061] For example, cleaning equipment can be a robot vacuum cleaner, a dust mite remover, or an air purifier.

[0062] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A dust collection chamber detection device, characterized in that, include: A housing, wherein a dust collection chamber is provided inside the housing; A first through-beam sensor and a second through-beam sensor, the first through-beam sensor including a first receiver and a first transmitter, the second through-beam sensor including a second receiver and a second transmitter, the through-beam optical paths of the first receiver and the first transmitter and the through-beam optical paths of the second receiver and the second transmitter are arranged at intervals and both pass through the dust collection chamber, the first receiver and the second transmitter are located on one side of the housing, and the second receiver and the first transmitter are located on the other side of the housing.

2. The dust collection chamber detection device according to claim 1, characterized in that, Both the first receiver and the second receiver are infrared receivers, and both the first transmitter and the second transmitter are infrared transmitters.

3. The dust collection chamber detection device according to claim 1, characterized in that, The transmission angle of the first transmitter and the second transmitter is α, and the reception angle of the first receiver and the second receiver is β, wherein α≤15° and β≤60°.

4. The dust collection chamber detection device according to claim 1, characterized in that, The distance between the first receiver and the second transmitter is L, the distance between the first receiver and the first transmitter is H, and the transmission angle of the first transmitter and the second transmitter is α, where L > 2*H*tan(α / 2).

5. The dust collection chamber detection device according to claim 1, characterized in that, The housing is provided with two detection chambers, which are respectively arranged on opposite sides of the dust collection chamber. The first receiver and the second transmitter are located in one detection chamber, and the second receiver and the first transmitter are located in the other detection chamber.

6. The dust collection chamber detection device according to claim 5, characterized in that, A partition is provided between the detection chamber and the dust collection chamber. The partition is provided with a first through-hole and a second through-hole. The through-hole of the first receiver and the first transmitter passes through the first through-hole, and the through-hole of the second receiver and the second transmitter passes through the second through-hole.

7. The dust collection chamber detection device according to claim 6, characterized in that, Light-transmitting sheets are installed at the positions of the first and second pairs of apertures.

8. The dust collection chamber detection device according to claim 5, characterized in that, A light-transmitting plate is provided between the detection chamber and the dust collection chamber, and the light paths of the first receiver and the first transmitter, as well as the light paths of the second receiver and the second transmitter, can all pass through the light-transmitting plate.

9. The dust collection chamber detection device according to any one of claims 1-8, characterized in that, The dust collection chamber detection device also includes a straight plate filter element, the filter surface of which is a plane, and the first and second through-beam sensors are arranged at intervals along a direction parallel to the filter surface of the straight plate filter element.

10. The dust collection chamber detection device according to any one of claims 1-8, characterized in that, The dust collection chamber detection device also includes a cylindrical filter element, the filter surface of which is cylindrical, and the first and second through-beam sensors are arranged at intervals along the axial direction of the cylindrical filter element.

11. A cleaning device, characterized in that, include: Cleaning the main body; A dust collection chamber detection device, wherein the dust collection chamber detection device is any one of claims 1-10, and the dust collection chamber is disposed within the cleaning body.

12. The cleaning equipment according to claim 11, characterized in that, The dust collection chamber is detachably connected to the cleaning body.