An infrared photoelectric sensor designed to prevent moisture absorption

Abstract

This invention relates to the field of sensor technology and provides an infrared photoelectric sensor designed to prevent moisture absorption. The sensor includes a sensor body mounted on a sensor housing. The sensor housing has a first channel, a second channel, and a third channel connected in sequence to form a serpentine airflow channel. The sensor element included in the sensor body extends into the third channel. A wind-guiding mechanism is provided on a first partition between the first and second channels. A first dehumidification mechanism is provided on the top plate of the first channel, corresponding to one side of the wind-guiding mechanism. A second dehumidification mechanism is provided on the second partition between the second and third channels, corresponding to the other side of the wind-guiding mechanism. An air-guiding mechanism is provided within the airflow channel. This invention can ensure ventilation and heat dissipation for the sensor components while preventing moisture in the airflow from affecting the sensor components.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, and in particular to an infrared photoelectric sensor that is resistant to moisture. Background Technology

[0002] A photoelectric sensor is a device that converts light signals into electrical signals. Photoelectric sensors have advantages such as high accuracy, fast response, and non-contact operation. They can also measure a wide range of parameters, have simple structures, and come in various flexible forms. Therefore, photoelectric sensors are widely used in detection and control applications.

[0003] Current photoelectric sensors are prone to damage from moisture when used in humid environments. This is because most photoelectric sensors have heat dissipation vents to facilitate heat dissipation. In humid environments, moisture-laden air from the outside can enter through these vents, causing the internal electrical components of the photoelectric sensor to become damp, which in turn reduces its lifespan. Summary of the Invention

[0004] The purpose of this invention is to provide an infrared photoelectric sensor that is protected from moisture, thereby solving the problem that moisture-laden air entering through the heat dissipation vent can easily cause moisture to get into the electrical components inside the photoelectric sensor, resulting in a short service life for the photoelectric sensor.

[0005] The embodiments of the present invention are implemented as follows:

[0006] An infrared photoelectric sensor designed to prevent moisture absorption includes a sensor body mounted on a sensor housing. The sensor housing has a first channel, a second channel, and a third channel connected in sequence to form a serpentine airflow channel. The sensor element included in the sensor body extends into the third channel. A wind-guiding mechanism is provided on a first partition between the first channel and the second channel, and the first partition has a first vent. A first dehumidification mechanism is provided on the top plate of the first channel, corresponding to one side of the wind-guiding mechanism. A second dehumidification mechanism is provided on a second partition between the second channel and the third channel, corresponding to the other side of the wind-guiding mechanism, and the second partition has a second vent. An air-guiding mechanism is provided within the airflow channel. When the air-guiding mechanism is activated, airflow flowing along the first channel passes through the first dehumidification mechanism, and airflow flowing along the second channel passes through the second dehumidification mechanism.

[0007] In some embodiments provided by the present invention, the air guiding mechanism includes a movable plate slidably disposed on the first partition plate. The end of the movable plate is supported and connected to the first partition plate by a support spring. A third gear is rotatably disposed on the movable plate. A first gear and a second gear are also rotatably disposed on the first partition plate. The first gear meshes with one side of the third gear, and the second gear meshes with the other side of the third gear. The end of the first guide plate included in the air guiding mechanism is fixedly connected to the first gear, and the end of the second guide plate included in the air guiding mechanism is fixedly connected to the second gear.

[0008] In some embodiments provided by the present invention, the first partition is further provided with two sets of flexible sealing elements. One set of flexible sealing elements is used to seal between the first guide plate and the first partition, and the other set of flexible sealing elements is used to seal between the second guide plate and the first partition.

[0009] In some embodiments provided by the present invention, a first short spoiler and a first long spoiler are sequentially arranged at the top of the first channel along the airflow direction, and a first guide plate extending into the first channel is located between the first short spoiler and the first long spoiler.

[0010] In some embodiments provided by the present invention, a second short spoiler and a second long spoiler are sequentially arranged at the bottom of the second channel along the airflow direction, and a second guide plate extending into the second channel is located between the second short spoiler and the second long spoiler.

[0011] In some embodiments provided by the present invention, the air-guiding mechanism includes an air intake mechanism disposed at the inlet of the serpentine airflow channel and an air outlet mechanism disposed at the outlet of the serpentine airflow channel. When the air outlet mechanism and the air intake mechanism are activated, a flowing airflow is formed in the serpentine airflow channel. The first guide plate and the second guide plate included in the air-guiding mechanism tend to rotate to a vertical state, so as to prolong the path of the airflow in the serpentine airflow channel. This can increase the contact time between the airflow and the first dehumidification mechanism and the second dehumidification mechanism to a certain extent, thereby improving the dehumidification effect.

[0012] In some embodiments provided by the present invention, the air-guiding mechanism further includes a first air-guiding mechanism and a second air-guiding mechanism disposed in the second channel. When the air outlet mechanism, the air inlet mechanism, the first air-guiding mechanism and the second air-guiding mechanism are activated simultaneously, the first guide plate blocks the first channel so that the airflow flowing along the first channel passes through the first dehumidification mechanism, and the second guide plate blocks the second channel so that the airflow flowing along the second channel passes through the second dehumidification mechanism.

[0013] In some embodiments provided by the present invention, the first dehumidification mechanism includes a first dehumidification chamber disposed at the top of the first channel. A servo motor is installed at the top of the first dehumidification chamber, the output shaft of the servo motor extends into the servo motor, and a toggle lever is installed on the output shaft of the servo motor. Multiple support shafts are evenly distributed on the toggle lever, and a toggle piece is rotatably disposed on each support shaft. The bottom of the first dehumidification chamber has a first mesh plate, and the bottom surface of the first mesh plate has a first fixed baffle corresponding to the first guide plate. When the first guide plate rotates to the point where its end abuts against the first fixed baffle, the airflow flowing along the first channel passes through the first mesh plate and through the first dehumidification chamber. The airflow through the first dehumidification chamber comes into contact with the dry particles in the first dehumidification chamber, thereby achieving the dehumidification effect. Furthermore, the toggle lever is driven to rotate by the servo motor, which drives the toggle piece to move the dry particles, further ensuring the drying effect of the airflow passing through the first dehumidification chamber.

[0014] In some embodiments provided by the present invention, the second dehumidification mechanism includes a second dehumidification chamber disposed on the second partition, a bottom plate being detachably installed at the bottom of the second dehumidification chamber, and an oscillating motor being disposed on the bottom plate; the top of the second dehumidification chamber has a second mesh plate, and a second fixed baffle corresponding to the second guide plate is fixedly disposed on the second mesh plate.

[0015] In some embodiments provided by the present invention, the sensor component is further provided with a temperature sensor for real-time detection of the temperature on the sensor component. When the temperature is greater than a threshold, the air-guiding mechanism is activated to form airflow in the serpentine airflow channel.

[0016] Compared with the prior art, the infrared photoelectric sensor provided in this embodiment of the invention has a tendency for the first and second guide plates to rotate to a vertical state, so as to extend the path of the airflow in the serpentine airflow channel. This can increase the contact time between the airflow and the first and second dehumidification mechanisms to a certain extent, thereby improving the dehumidification effect. When the induced draft mechanism is activated, the airflow flowing along the first channel passes through the first dehumidification mechanism. At this time, the airflow passing through the first dehumidification chamber contacts the dry particles in the first dehumidification chamber to achieve the dehumidification effect. Furthermore, the servo motor drives the lever to rotate, which in turn moves the deflector to move the dry particles, further ensuring the drying effect of the airflow passing through the first dehumidification chamber. When the airflow flowing along the second channel passes through the second dehumidification mechanism, the oscillation motor causes the base plate to vibrate, so that the airflow flowing through the second dehumidification chamber can fully contact the dry particles in the second dehumidification chamber, ensuring the drying effect of the airflow. In summary, the embodiments of the present invention can ensure ventilation and heat dissipation for sensor components while avoiding the impact of moisture in the airflow on the sensor components. This solves the problem that moisture-laden air entering through the heat dissipation vent can easily cause the electrical components inside the photoelectric sensor to become damp, resulting in a short service life for the photoelectric sensor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0018] Figure 1 This is a structural diagram of an infrared photoelectric sensor designed to prevent moisture absorption.

[0019] Figure 2 This is a partial schematic diagram of the air guiding mechanism provided in an embodiment of the present invention;

[0020] Figure 3 for Figure 1 A magnified schematic diagram of the local structure at point a;

[0021] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point b in the middle.

[0022] Appendix Figure 1-4In the middle section: 100, sensor housing; 101, first channel; 1011, first long spoiler; 1012, first short spoiler; 102, second channel; 1021, second long spoiler; 1022, second short spoiler; 103, third channel; 104, first vent; 105, second vent; 106, first partition; 107, second partition; 200, sensor body; 201, sensor components; 202, temperature sensor; 300, air outlet mechanism; 400, air inlet mechanism; 500, first air intake mechanism; 600, second air intake mechanism; 700, first dehumidification mechanism; 701, the... 702. Dehumidification chamber; 703. Servo motor; 704. First mesh plate; 705. First fixed baffle; 706. Actuating rod; 707. Support shaft; 708. Actuating plate; 809. Air guide mechanism; 800. First guide plate; 801. Second guide plate; 802. Flexible sealing element; 804. Moving plate; 805. Support spring; 806. First gear; 807. Second gear; 808. Third gear; 900. Second dehumidification mechanism; 901. Second dehumidification chamber; 902. Base plate; 903. Second mesh plate; 904. Second fixed baffle; 905. Vibrating motor; 906. Mounting frame; 907. Rubber pad. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The specific implementation of the invention will be described in detail below with reference to specific embodiments.

[0024] like Figure 1As shown, in one embodiment of the present invention, an infrared photoelectric sensor designed to prevent moisture absorption is provided. The infrared photoelectric sensor includes a sensor body 200 mounted on a sensor housing 100. The sensor housing 100 has a first channel 101, a second channel 102, and a third channel 103 sequentially connected to form a serpentine airflow channel. The sensor element 201 included in the sensor body 200 extends into the third channel 103. A wind-guiding mechanism 800 is provided on a first partition 106 between the first channel 101 and the second channel 102. The first partition 106 has a first vent 1. 04; The top plate of the first channel 101 has a first dehumidification mechanism 700 corresponding to one side of the air guiding mechanism 800, and the second partition 107 between the second channel 102 and the third channel 103 has a second dehumidification mechanism 900 corresponding to the other side of the air guiding mechanism 800. The second partition 107 has a second vent 105; The airflow channel has an air-guiding mechanism. When the air-guiding mechanism is activated, the airflow flowing along the first channel 101 passes through the first dehumidification mechanism 700, and the airflow flowing along the second channel 102 passes through the second dehumidification mechanism 900.

[0025] like Figure 1-2 As shown, in a preferred embodiment of the present invention, the air guiding mechanism 800 includes a movable plate 804 slidably disposed on the first partition 106. The end of the movable plate 804 is supported and connected to the first partition 106 by a support spring 805. A third gear 808 is rotatably disposed on the movable plate 804. A first gear 806 and a second gear 807 are also rotatably disposed on the first partition 106. The first gear 806 meshes with one side of the third gear 808, and the second gear 807 meshes with the other side of the third gear 808. The end of the first guide plate 801 of the air guiding mechanism 800 is fixedly connected to the first gear 806, and the end of the second guide plate 802 of the air guiding mechanism 800 is fixedly connected to the second gear 807.

[0026] Furthermore, in this embodiment of the invention, the first partition 106 is also provided with two sets of flexible sealing members 803. One set of flexible sealing members 803 is used to seal between the first guide plate 801 and the first partition 106, and the other set of flexible sealing members 803 is used to seal between the second guide plate 802 and the first partition 106.

[0027] In this embodiment of the invention, the flexible sealing element 803 is used to achieve sealing. Its specific material can be airtight fabric or plastic, and the specific form is not limited.

[0028] For further information, please refer to [link / reference]. Figure 1 In this embodiment of the invention, a first short spoiler 1012 and a first long spoiler 1011 are sequentially arranged on the top of the first channel 101 along the airflow direction, and a first guide plate 801 extending into the first channel 101 is located between the first short spoiler 1012 and the first long spoiler 1011.

[0029] Furthermore, in this embodiment of the invention, a second short spoiler 1022 and a second long spoiler 1021 are sequentially arranged at the bottom of the second channel 102 along the airflow direction, and a second guide plate 802 extending into the second channel 102 is located between the second short spoiler 1022 and the second long spoiler 1021.

[0030] Furthermore, in a preferred embodiment provided by the present invention, the air-guiding mechanism includes an air inlet mechanism 400 disposed at the inlet of the serpentine airflow channel and an air outlet mechanism 300 disposed at the outlet of the serpentine airflow channel. When the air outlet mechanism 300 and the air inlet mechanism 400 are activated, a flowing airflow is formed in the serpentine airflow channel. The first guide plate 801 and the second guide plate 802 included in the air-guiding mechanism 800 tend to rotate to a vertical state, thereby extending the path of the airflow in the serpentine airflow channel. This can, to a certain extent, increase the contact time between the airflow and the first dehumidification mechanism 700 and the second dehumidification mechanism 900, and improve the dehumidification effect.

[0031] Furthermore, in a preferred embodiment provided by the present invention, the air-guiding mechanism further includes a first air-guiding mechanism 500 and a second air-guiding mechanism 600 disposed within the second channel 102. When the air outlet mechanism 300, the air inlet mechanism 400, the first air-guiding mechanism 500, and the second air-guiding mechanism 600 are activated simultaneously, the first guide plate 801 blocks the first channel 101 so that the airflow flowing along the first channel 101 passes through the first dehumidification mechanism 700, and the second guide plate 802 blocks the second channel 102 so that the airflow flowing along the second channel 102 passes through the second dehumidification mechanism 900.

[0032] In this embodiment of the invention, the air outlet mechanism 300, the air inlet mechanism 400, the first air induced mechanism 500, and the second air induced mechanism 600 are all existing fan mechanisms used to achieve the air induced flow effect. To prevent dust, flying insects, etc. from entering the serpentine airflow channel, protective nets are provided at the positions of the air inlet mechanism 400 and the air outlet mechanism 300.

[0033] Furthermore, such as Figure 1 and Figure 4As shown, in this embodiment of the invention, the first dehumidification mechanism 700 includes a first dehumidification chamber 701 disposed at the top of the first channel 101. A servo motor 702 is mounted on the top of the first dehumidification chamber 701. The output shaft of the servo motor 702 extends into the servo motor 702, and a toggle lever 705 is mounted on the output shaft of the servo motor 702. A plurality of support shafts 706 are evenly distributed on the toggle lever 705, and a toggle piece 707 is rotatably disposed on each support shaft 706. The bottom of the first dehumidification chamber 701 has a first mesh plate 703, and the bottom surface of the first mesh plate 703... The first fixed baffle 704 is provided, which corresponds to the first guide plate 801. When the first guide plate 801 is rotated to the point where its end abuts against the first fixed baffle 704, the airflow flowing along the first channel 101 passes through the first mesh plate 703 and through the first dehumidification chamber 701. The airflow through the first dehumidification chamber 701 comes into contact with the dry particles in the first dehumidification chamber 701, thereby achieving the dehumidification effect. Furthermore, the servo motor 702 drives the toggle lever 705 to rotate, which in turn drives the toggle piece 707 to move the dry particles, further ensuring the drying effect of the airflow passing through the first dehumidification chamber 701.

[0034] Furthermore, such as Figure 1 and Figure 3 As shown, in this embodiment of the invention, the second dehumidification mechanism 900 includes a second dehumidification chamber 901 disposed on the second partition 107, a bottom plate 902 detachably mounted on the bottom of the second dehumidification chamber 901, and an oscillating motor 905 disposed on the bottom plate 902; the top of the second dehumidification chamber 901 has a second mesh plate 903, and a second fixed baffle 904 corresponding to the second guide plate 802 is fixedly disposed on the second mesh plate 903.

[0035] Furthermore, in this embodiment of the invention, a mounting frame 906 is installed on the second partition 107 by screws, the end of the base plate 902 abuts against the mounting frame 906, and a rubber pad 907 is provided at the connection between the base plate 902 and the mounting frame 906.

[0036] In this embodiment of the invention, the base plate 902 is vibrated by the oscillating motor 905 so that the airflow flowing through the second dehumidification chamber 901 can fully contact the drying particles in the second dehumidification chamber 901, thus ensuring the drying effect of the airflow.

[0037] In this embodiment of the invention, the airflow dried by the first dehumidification mechanism 700 and the second dehumidification mechanism 900 enters the third channel 103 through the second vent 105 to remove the heat generated by the sensor element 201 during operation.

[0038] Furthermore, in this embodiment of the invention, a temperature sensor 202 is also provided on the sensor component 201 for real-time detection of the temperature on the sensor component 201. When the temperature is greater than a threshold, the air-guiding mechanism is activated to form airflow in the serpentine airflow channel.

[0039] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Other modifications can be readily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and examples shown and described herein.

Claims

1. An infrared photoelectric sensor designed to prevent moisture absorption, characterized in that, The infrared photoelectric sensor includes a sensor body mounted on a sensor housing; the sensor housing has a first channel, a second channel, and a third channel connected in sequence to form a serpentine airflow channel; the sensor element included in the sensor body extends into the third channel; a wind-guiding mechanism is provided on a first partition between the first channel and the second channel, and the first partition has a first vent; a first dehumidification mechanism is provided on the top plate of the first channel corresponding to one side of the wind-guiding mechanism; a second dehumidification mechanism is provided on a second partition between the second channel and the third channel corresponding to the other side of the wind-guiding mechanism, and the second partition has a second vent; an air-guiding mechanism is provided in the airflow channel; when the air-guiding mechanism is activated, the airflow flowing along the first channel passes through the first dehumidification mechanism, and the airflow flowing along the second channel passes through the second dehumidification mechanism; The air intake mechanism includes an air intake mechanism disposed at the inlet of the serpentine airflow channel and an air outlet mechanism disposed at the outlet of the serpentine airflow channel. The air intake mechanism also includes a first air intake mechanism and a second air intake mechanism disposed in the second channel. When the air outlet mechanism, the air inlet mechanism, the first air intake mechanism and the second air intake mechanism are activated simultaneously, the first guide plate blocks the first channel so that the airflow flowing along the first channel passes through the first dehumidification mechanism, and the second guide plate blocks the second channel so that the airflow flowing along the second channel passes through the second dehumidification mechanism. The first dehumidification mechanism includes a first dehumidification chamber disposed at the top of the first channel. A servo motor is installed at the top of the first dehumidification chamber. The output shaft of the servo motor extends into the servo motor, and a toggle lever is installed on the output shaft of the servo motor. Multiple support shafts are evenly distributed on the toggle lever, and a toggle piece is rotatably disposed on each support shaft. The bottom of the first dehumidification chamber has a first mesh plate. The bottom surface of the first mesh plate has a first fixed baffle corresponding to the first guide plate. When the first guide plate rotates to the point where its end abuts against the first fixed baffle, the airflow flowing along the first channel passes through the first mesh plate and through the first dehumidification chamber. The second dehumidification mechanism includes a second dehumidification chamber disposed on the second partition, a base plate detachably installed at the bottom of the second dehumidification chamber, and an oscillating motor disposed on the base plate; the top of the second dehumidification chamber has a second mesh plate, and a second fixed baffle corresponding to the second guide plate is fixedly disposed on the second mesh plate.

2. The moisture-proof infrared photoelectric sensor according to claim 1, characterized in that, The air guiding mechanism includes a movable plate slidably disposed on the first partition. The end of the movable plate is supported and connected to the first partition by a support spring. A third gear is rotatably disposed on the movable plate. A first gear and a second gear are also rotatably disposed on the first partition. The first gear meshes with one side of the third gear, and the second gear meshes with the other side of the third gear. The end of the first guide plate of the air guiding mechanism is fixedly connected to the first gear, and the end of the second guide plate of the air guiding mechanism is fixedly connected to the second gear.

3. The moisture-proof infrared photoelectric sensor according to claim 2, characterized in that, The first partition is also provided with two sets of flexible seals. One set of flexible seals is used to seal between the first guide plate and the first partition, and the other set of flexible seals is used to seal between the second guide plate and the first partition.

4. The moisture-proof infrared photoelectric sensor according to claim 2 or 3, characterized in that, A first short spoiler and a first long spoiler are sequentially arranged at the top of the first channel along the airflow direction, and a first guide plate extending into the first channel is located between the first short spoiler and the first long spoiler.

5. The moisture-proof infrared photoelectric sensor according to claim 4, characterized in that, The bottom of the second channel is provided with a second short spoiler and a second long spoiler in sequence along the airflow direction, and a second guide plate extending into the second channel is located between the second short spoiler and the second long spoiler.

6. The moisture-proof infrared photoelectric sensor according to any one of claims 1-3, characterized in that, The sensor components also include a temperature sensor.

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