Air filter capable of detecting dust collection condition on surface of filter element

Abstract

The utility model relates to an air filter capable of detecting the dust collection condition on the surface of a filter element, which comprises the filter element (1), a filter shell (2), an end cover (3), a light emitting device (4) and a light sensing device (5), the filter element (1) is arranged in the filter shell (2), the end cover (3) is arranged on the filter shell (2), and the light emitting device (4) and the light sensing device (5) are arranged on the inner surface of the filter shell (2). Compared with the prior art, through the arrangement of the light-emitting device and the light sensing device, the dust collection condition of the surface of the air filter element can be detected, a user is prompted to replace or purge the air filter element, and the inspection method of manual disassembly and visual inspection is not adopted any more, so that the operation time is saved, and the user experience is improved; and the health problem caused by particulate matters can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile, especially a kind of air cleaner that filter core surface dust collection condition can be detected. BACKGROUND

[0002] Air filter element is an important component installed in the air intake system of vehicle engine, its main role is to filter the dust, sand and other impurities in the air entering the engine. Clean air is essential for the normal operation of the engine, because if these impurities enter the engine, it may cause the piston, cylinder wall and other key components to wear out, and even cause the engine performance to decline or damage.

[0003] Air filter element is usually made of composite material with wood pulp fiber as base material or non-woven fabric, etc. These materials can effectively intercept tiny particles in the air. When the air filter element is used for a period of time, its filtering efficiency will decrease due to the accumulation of too much dust and dirt, and at the same time, it will also increase the air intake resistance, affecting the working efficiency of the engine. In the prior art, the replacement or cleaning of the air filter element for vehicle needs to be actively performed by the user himself or by a relevant technical personnel. In actual situation, the air filter element for vehicle is used for a long period of time, and when the user forgets to clean or replace the air filter element for vehicle for a period of time, the dust stored on the surface of the filter element will enter the vehicle cabin, which will have unnecessary impact on the health of the driver and passengers. Therefore, it is necessary to detect the dust collection condition on the surface of the filter element by using appropriate means to prompt replacement or blowing. SUMMARY

[0004] The purpose of the utility model is to provide an air cleaner that can detect the dust collection condition on the surface of the filter element, which can realize detection of the dust collection condition on the surface of the air filter element.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] The utility model provides an air cleaner that can detect the dust collection condition on the surface of the filter element, which comprises a filter element, a filter housing, an end cover, a light emitting device and a light sensing device, wherein the filter element is arranged in the filter housing, the end cover is arranged on the filter housing, and the light emitting device and the light sensing device are arranged on the inner surface of the filter housing.

[0007] Preferably, the light emitting device and the light sensing device are arranged on the side of the inner surface of the filter housing away from the air inlet, where the dust is thicker, and the interference of air intake and air outlet on the detection result is avoided, improving the accuracy of detection.

[0008] Preferably, the light emitting device and the light sensing device are fixedly arranged on the inner surface of the filter housing by screws.

[0009] Preferably, the light emitting device and the light receiving device are fixedly arranged on the inner surface of the filter housing by riveting.

[0010] Preferably, the light emitting device and the light receiving device are closely spaced.

[0011] Further preferably, the light receiving device is arranged directly below the light emitting device with a spacing distance of 0.2-15 cm.

[0012] Preferably, the light emitting device is arranged vertically on the inner surface of the filter housing, and the light emitting direction of the light emitting device is perpendicular to the surface of the filter element.

[0013] Preferably, the light receiving device is arranged vertically on the inner surface of the filter housing, and the light receiving device receives the light reflected by the surface of the filter element.

[0014] Preferably, the light emitting device is provided with a black protective cover on the light emitting port.

[0015] Further preferably, the protective cover is in a divergent shape.

[0016] Preferably, a lens is further arranged in front of the light emitting port of the light emitting device for further focusing the light emitted by the light emitting device.

[0017] Further preferably, the protective cover is used to block the scattering light of the lens from affecting the light receiving device, and the lens and the protective cover are used to block the light of the light emitting device from directly irradiating the light receiving device.

[0018] Preferably, the receiving port of the light receiving device is provided with a dustproof mirror for avoiding dust from entering the interior of the light receiving device, prolonging the service life and improving the detection accuracy.

[0019] Preferably, the light emitting device comprises an LED lamp, and the light receiving device comprises a photoelectric sensor, which have the characteristics of low cost, fast response and good stability, and are suitable for the detection requirements of the air filter.

[0020] Preferably, the air filter further comprises a controller, and the controller is a single-chip microcomputer.

[0021] Preferably, the controller is signal-connected with the light emitting device and the light receiving device, the controller is signal-connected with an automatic ash cleaning system of the automobile, the controller is signal-connected with a vehicle control system, and the controller is used for receiving signals and sending instructions.

[0022] Further preferably, the controller can send an alarm signal to the vehicle control system.

[0023] The air filter can automatically detect the dust accumulation condition on the surface of the filter element, and automatically start a dust cleaning system or send an alarm signal to a vehicle control system according to the detection result, so that the cleanliness and use efficiency of the filter element are improved.

[0024] Preferably, the end cover is connected with the filter housing through a snap connection.

[0025] Preferably, the filter element is in a ring structure, and the filter element is sealingly fixed in the filter housing through the end cover.

[0026] Preferably, the air filter further comprises an air inlet and an air outlet pipe.

[0027] Further preferably, the air inlet is arranged on the filter housing and is in communication with a cavity formed between the filter housing and the filter element, and the cavity is used for gas circulation.

[0028] Further preferably, the air outlet pipe is arranged on the filter housing at a position corresponding to the filter element, and an end of the air outlet pipe close to the filter housing extends into the filter housing and is in communication with the filter element.

[0029] The air filter designed in the utility model can be adapted to various vehicles such as passenger cars, commercial vehicles and non-road machines by adjusting the installation mode.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] (1) The air filter provided by the utility model can realize detection of the dust accumulation condition on the surface of the air filter element through the arrangement of the light emitting device and the light sensing device, and the manual disassembly and visual inspection method is no longer used, so that the operation time is saved, health problems caused by particulate matter are prevented, and user experience is improved.

[0032] (2) The utility model emits detection light through the light emitting device, and the reflected light is collected by the light sensing device after being reflected on the surface of the filter element, and the dust thickness on the surface of the filter element is judged by comparing the light reflection intensity when the surface of the filter element is clean.

[0033] (3) The utility model can remind the user to clean dust or replace when the dust accumulated on the surface of the filter element reaches a threshold value, so that engine damage caused by filter element failure is prevented.

[0034] (4) The utility model can reflect a more accurate dust cleaning / blowing time according to real-time detection feedback, so that the service life of the filter element is prolonged.

[0035] (5) The utility model can provide signal input for an automatic dust cleaning system of an automobile, such as an automatic reverse blowing system, a water washing system and the like. BRIEF DESCRIPTION OF DRAWINGS

[0036] Fig. 1 It is a structure schematic view of the utility model;

[0037] Fig. 2 It is a local schematic view of the utility model;

[0038] In the drawing: 1, filter core, 2, filter housing, 3, end cap, 4, light emitting device, 5, photosensitive device, 6, controller, 7, black protective cover, 8, lens. DETAILED DESCRIPTION

[0039] The utility model will be described in detail below in combination with the drawings and specific embodiments. The embodiment is implemented on the premise of the technical scheme of the utility model, and gives detailed implementation mode and specific operation process, but the protection scope of the utility model is not limited to the following examples.

[0040] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The indicated device or element must have a specific orientation, a specific orientation and operation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the utility model, it needs to be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0042] In the following embodiments or examples, if there is no special description of the function parts or structures, it is indicated that they are all conventional parts or conventional structures adopted in the field to realize the corresponding functions.

[0043] Embodiment 1

[0044] An air filter capable of detecting the dust collection condition of the surface of filter core, comprising a filter housing 2, a filter core 1 arranged in the filter housing, an end cap arranged on the filter housing 2, and further comprising a light emitting device 4 and a photosensitive device 5 arranged on the inner surface of the filter housing 2.

[0045] Embodiment 2

[0046] An air filter capable of detecting the dust accumulation on the surface of the filter element, comprising a filter element 1, a filter housing 2, an end cover 3, a light emitting device 4, and a light sensing device 5, as shown in the figure. Figs. 1-2 The filter element 1 is arranged in the filter housing 2, and the end cover 3 is arranged on the filter housing 2.

[0047] In this embodiment, the light emitting device 4 is an LED lamp for emitting light, which is arranged vertically on the inner surface of the filter housing 2, and the light emitting direction of the light emitting device 4 is perpendicular to the surface of the filter element 1. The light sensing device 5 is a photoelectric sensor for receiving the reflected light from the surface of the filter element 1, which is arranged vertically on the inner surface of the filter housing 2. In this embodiment, the light emitting device 4 and the light sensing device 5 are both fixedly arranged on the side of the inner surface of the filter housing 2 away from the air inlet and the air outlet by screw connection, so as to avoid the interference of the air inlet and the air outlet on the detection result. The light emitting device 4 and the light sensing device 5 are closely spaced, and in this embodiment, the light sensing device 5 is arranged directly below the light emitting device 4. A black protective cover 7 in a diverging shape is arranged on the light outlet of the light emitting device 4, and a lens 8 is arranged in front of the light outlet of the light emitting device 4 through a mounting bracket. In this embodiment, the lens 8 is used for focusing light, and the protective cover 7 is used for blocking the scattered light of the lens from affecting the light sensing device 5. The combination of the lens 8 and the protective cover 7 can be used to block the light of the light emitting device 4 from directly irradiating the light sensing device 5, and a dustproof mirror is arranged on the receiving port of the light sensing device 5. The dustproof mirror is colorless and transparent, which is used to prevent dust from entering the inside of the light sensing device 5. The use of the protective cover and the dustproof mirror can improve the accuracy of detection and prolong the service life of the light emitting device and the light sensing device.

[0048] The working principle of this embodiment is that the light emitting device 4 emits detection light, which is reflected on the surface of the filter element 1, and then enters the light sensing device 5. The light sensing device 5 collects the intensity of the reflected light, and compares it with the light reflection intensity when the surface of the filter element 1 is clean, so as to judge the thickness of the dust on the surface of the filter element 1. According to the detection result, the user is prompted to replace the filter element or perform blowing.

[0049] Embodiment 3

[0050] On the basis of embodiment 2, this embodiment further comprises a controller 6, which is a single-chip microcomputer. The controller 6 is signal-connected with the light emitting device 4 and the light sensing device 5, and is also signal-connected with an automatic dust cleaning system of the automobile and a vehicle control system. The controller 6 is used for receiving signals and sending instructions.

[0051] The air filter provided by the embodiment can detect the dust collection condition of the filter element surface, the light emitting device 4 emits detection light, the filter element 1 surface generates reflection, the reflected light is received by the photosensitive device 5, the photosensitive device 5 transmits the collected signal to the controller 6, the controller 6 calculates the signal and converts into the dust concentration of the filter element 1 surface, when the dust concentration reaches the set threshold value, the controller 6 outputs an alarm signal to the vehicle control system to remind the user to clean dust / replacement; or outputs a signal to the automatic dust cleaning system of the automobile, such as the automatic reverse blowing system to realize automatic cleaning.

[0052] The above description of the embodiments is for facilitating the ordinary skilled person in the art to understand and use the utility model. The person skilled in the art can obviously easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without having to undergo creative labor. Therefore, the utility model is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art according to the disclosure of the utility model without departing from the scope of the utility model should be within the protection scope of the utility model.

Claims

1. An air filter capable of detecting dust accumulation on the filter element surface, characterized in that: The air filter comprises a filter element (1), a filter housing (2), an end cover (3), a light emitting device (4) and a light receiving device (5), wherein the filter element (1) is arranged in the filter housing (2), the end cover (3) is arranged on the filter housing (2), and the light emitting device (4) and the light receiving device (5) are arranged on the inner surface of the filter housing (2).

2. The air cleaner of claim 1, wherein, The light emitting device (4) and the light receiving device (5) are arranged on the side of the inner surface of the filter housing (2) away from the air inlet and the air outlet.

3. The air cleaner of claim 1 wherein, The light receiving device (5) is arranged directly below the light emitting device (4).

4. The air cleaner of claim 1 wherein, The light emitting device (4) is arranged vertically on the inner surface of the filter housing (2), and the light emitting direction of the light emitting device (4) is perpendicular to the surface of the filter element (1).

5. The air cleaner of claim 1 wherein, The light receiving device (5) is arranged vertically on the inner surface of the filter housing (2), and the light receiving device (5) receives the light reflected by the surface of the filter element (1).

6. The air cleaner of claim 1 wherein, A black protective cover (7) and a lens (8) are arranged on the light outlet of the light emitting device (4) to block the direct light of the light emitting device (4) from shining on the light receiving device (5).

7. The air cleaner of claim 1 wherein, A dustproof mirror is arranged on the receiving port of the light receiving device (5) to prevent dust from entering the interior of the light receiving device (5).

8. The air cleaner of claim 1 wherein, The light emitting device (4) comprises an LED lamp, and the light receiving device (5) comprises a photoelectric sensor.

9. The air cleaner of claim 1 wherein, The air filter further comprises a controller (6), which is a single-chip microcomputer.

10. The air cleaner of claim 9, wherein, The controller (6) is signal-connected with the light emitting device (4) and the light receiving device (5), and is signal-connected with an automatic dust cleaning system of a vehicle, a vehicle control system and a signal receiving and instruction sending device.

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