A sensing device applied to a range hood

Abstract

The utility model relates to a range hood technical field, concretely is a kind of sensing device applied to range hood, sensing device includes sensing device ontology and the cleaning device being contacted with the outer surface of sensing device ontology;Sensing device ontology includes shell, the optical signal transceiver device being set to the inside of shell and drive arrangement;Optical signal transceiver device includes optical signal transmitting device and optical signal receiving device, optical signal transmitting device is used to switch between multiple signal transmitting power, and each signal transmitting power is suitable for one detection mode in the multiple detection mode of sensing device;Drive arrangement is used to drive sensing device ontology to rotate around the horizontal axis of range hood, to switch between the multiple detection direction of sensing device ontology, and multiple detection direction and multiple detection mode one-to-one correspond;Cleaning device is used to clean the outer surface of shell in the rotating process of sensing device ontology;The utility model can switch the different detection mode of sensing device.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a sensing device applied to range hoods. Background Technology

[0002] With the development of technology, more and more sensors are being applied to range hood products to achieve specific intelligent functions, such as human body sensing through human body sensors and smoke concentration detection through smoke concentration sensors.

[0003] In related technologies, the functions of each sensor in a range hood product are generally quite independent, requiring the installation of multiple sensors to meet the multi-functional detection needs of the range hood product, resulting in high hardware costs. In addition, when oil fumes and impurities in the kitchen environment adhere to the surface of the sensor lens, they can affect the normal detection of the sensor, and manual cleaning of the lens is time-consuming and laborious.

[0004] Given the shortcomings of existing technologies, there is an urgent need to research a sensing device for range hoods to solve the above problems. Utility Model Content

[0005] To address the aforementioned technical problems, this invention provides a sensing device for range hoods. This invention applies a sensing device capable of operating multiple detection modes to the range hood. A drive device rotates the sensing device body around the horizontal axis of the range hood, switching between multiple detection directions. This allows the sensing device to switch the detection mode corresponding to each detection direction. Simultaneously, the signal transmission power of the optical signal transmitter can be switched between different detection modes to ensure the detection effect of the sensing device in the corresponding mode. Furthermore, by incorporating a cleaning device that contacts the outer surface of the sensing device body, the cleaning device can clean the outer surface of the housing during the rotation of the sensing device body, improving the cleaning efficiency and effect of the sensing device, thereby effectively saving on the hardware cost and manual cleaning cost of the range hood product.

[0006] This utility model provides a sensing device for use in range hoods, characterized in that the sensing device includes: a sensing device body and a cleaning device that contacts the outer surface of the sensing device body; the sensing device body includes: a housing, an optical signal transceiver disposed inside the housing, and a driving device. The optical signal transceiver includes an optical signal transmitter and an optical signal receiver. The optical signal transmitter is used to switch between multiple signal transmission powers, and each signal transmission power is suitable for one of the multiple detection modes of the sensing device. The driving device is used to drive the sensor body to rotate around the horizontal axis of the range hood, so as to switch between multiple detection directions of the sensor body, and the multiple detection directions correspond one-to-one with the multiple detection modes. The cleaning device is used to clean the outer surface of the housing during the rotation of the sensing device body.

[0007] Furthermore, the range hood includes a smoke collection hood, the sensing device is disposed at the front end of the smoke collection hood, and the horizontal axis is parallel to the front edge of the smoke collection hood.

[0008] Furthermore, the sensing device body is disposed in the groove at the front end of the smoke collection hood, and the cleaning device is disposed on the edge of the groove.

[0009] Furthermore, the main body of the sensing device is cylindrical, and the groove is semi-cylindrical.

[0010] Furthermore, the cleaning device includes a cleaning unit that contacts the housing, the cleaning unit being made of an elastic and soft material.

[0011] Furthermore, the optical signal transmitting device includes at least two sets of optical signal transmitting units, and the optical signal receiving device includes at least one set of optical signal receiving units.

[0012] Furthermore, when the sensing device operates the hand gesture recognition detection mode among the multiple detection modes, the detection direction of the sensing device body is located between the front and the bottom of the range hood, and the signal transmission power of the optical signal transmitting device is the first power.

[0013] Furthermore, when the sensing device operates the human body sensing detection mode among the multiple detection modes, the detection direction of the sensing device is located between 45° above and 45° below the front of the range hood, and the signal transmission power of the optical signal transmitting device is the second power, which is greater than the first power.

[0014] Furthermore, when the sensing device operates the cookware height detection mode among the multiple detection modes, the detection direction of the sensing device body is towards the cookware placement area below the range hood, and the signal transmission power of the optical signal transmitting device is the third power.

[0015] Furthermore, when the sensing device operates the oil fume concentration detection mode among the multiple detection modes, the detection direction of the sensing device body is towards the smoke inlet of the range hood, and the signal transmission power of the optical signal transmitting device is the fourth power.

[0016] Implementing the embodiments of this utility model has the following beneficial effects: This invention applies a sensor capable of operating multiple detection modes to a range hood. A drive device rotates the sensor body around the horizontal axis of the range hood, switching between multiple detection directions. This allows the sensor to switch the detection mode corresponding to each detection direction. Simultaneously, the signal transmission power of the optical signal transmitter can be switched between different detection modes to ensure the detection effect of the sensor in the corresponding mode. Furthermore, a cleaning device that contacts the outer surface of the sensor body cleans the outer surface of the sensor body during rotation, improving cleaning efficiency and effectiveness, thereby effectively saving on hardware costs and manual cleaning costs for the range hood. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this utility model. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] Figure 1 This is a front view of a sensing device provided in this embodiment; Figure 2 This is a side view of a sensing device provided in this embodiment.

[0019] The corresponding reference numerals in the figure are: 1-Sensing device body; 2-Cleaning device; 3-Housing; 4-Optical signal transceiver; 5-Drive device; 6-Optical signal transmitter; 7-Optical signal receiver; 8-Smoke hood. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0022] To address the shortcomings of existing technologies, this invention applies a sensor capable of operating multiple detection modes to a range hood. A drive device rotates the sensor body around the horizontal axis of the range hood, switching between multiple detection directions. This allows the sensor to switch the detection mode corresponding to each detection direction. Simultaneously, the signal transmission power of the optical signal transmitter can be adjusted for different detection modes to ensure optimal detection performance. Furthermore, a cleaning device that contacts the outer surface of the sensor body cleans the outer surface of the sensor housing during rotation, improving cleaning efficiency and effectiveness. This effectively reduces hardware and manual cleaning costs associated with the range hood.

[0023] See Figure 1 and Figure 2 This embodiment provides a sensing device for a range hood. The sensing device includes: a sensing device body 1 and a cleaning device 2 that contacts the outer surface of the sensing device body 1. The sensing device body 1 includes: a housing 3, an optical signal transceiver 4 disposed inside the housing, and a driving device 5. The optical signal transceiver 4 includes: an optical signal transmitter 6 and an optical signal receiver 7. The optical signal transmitter 6 is used to switch between multiple signal transmission powers, and each signal transmission power is suitable for one of the multiple detection modes of the sensing device. The driving device 5 is used to drive the sensing device body 1 to rotate around the horizontal axis of the range hood to switch between multiple detection directions of the sensing device body 1, and the multiple detection directions correspond one-to-one with the multiple detection modes. The cleaning device 2 is used to clean the outer surface of the housing 3 during the rotation of the sensing device body 1.

[0024] Specifically, the detection direction of the sensing device body 1 can refer to the optical signal emission direction of the optical signal emitting device 6.

[0025] Specifically, the optical signal transceiver 4 can be fixed inside the housing.

[0026] In this embodiment, as Figure 1As shown, the range hood includes: a smoke collection hood 8, and a sensing device disposed at the front end of the smoke collection hood 8, with its horizontal axis parallel to the front edge of the smoke collection hood 8. Preferably, the sensing device can be disposed at the middle position of the front end of the smoke collection hood 8.

[0027] As can be seen from the above embodiments, by placing the sensing device at the front end of the smoke hood and rotating it around a horizontal axis parallel to the front edge of the smoke hood to switch between different detection directions, the switching efficiency of different detection directions can be improved while ensuring the detection effect of the detection mode corresponding to the current detection direction.

[0028] In this embodiment, as Figure 2 As shown, the sensor body 1 is located in the groove at the front end of the smoke hood 8, and the cleaning device 2 is located on the edge of the groove.

[0029] In an optional embodiment, the sensing device body 1 is cylindrical and the groove is semi-cylindrical. Preferably, the cleaning device 2 includes two cleaning units, which are respectively disposed on the two edges of the semi-cylindrical groove.

[0030] As can be seen from the above embodiments, by placing the sensor body in the groove at the front end of the smoke hood and the cleaning device on the edge of the groove, the sensor can be better embedded in the smoke hood, reducing the space occupied by the sensor while ensuring the cleaning effect of the sensor.

[0031] In one optional embodiment, the cleaning device 2 is made of a flexible and soft material. Optionally, the flexible and soft material may include, but is not limited to, a brush, a sponge, rubber, etc. Preferably, the cleaning device 2 is elongated.

[0032] In an optional embodiment, the housing 3 is a transparent housing, and the light signal emitted by the light signal emitting device 6 can be emitted through the housing 3. The light signal reflected by the object can also be received by the light signal receiving device 7 through the housing 3.

[0033] In an optional embodiment, the optical signal transmitting device 6 includes at least two sets of optical signal transmitting units, and the optical signal receiving device 7 includes at least one set of optical signal receiving units.

[0034] Schematic, when there are at least two sets of optical signal transmitting units, the emission direction of one set of optical signal transmitting units can be biased to the left side of the middle of the smoke hood 8, and the emission direction of the other set of optical signal transmitting units can be biased to the right side of the middle of the smoke hood 8.

[0035] Indicatively, when at least one set of optical signal receiving units is also a set of optical signal transmitting units, the optical signal emitted by any one of the at least two sets of optical signal transmitting units can be reflected by the object to that set of optical signal transmitting units, so as to ensure the detection effect of the sensing device.

[0036] Indicatively, when the number of groups of optical signal transmitting units is the same as the number of groups of optical signal receiving units, each group of optical signal receiving devices corresponds to one group of optical signal receiving devices, and the optical signal emitted by each group of optical signal transmitting devices can be reflected by the object to the corresponding optical signal receiving device.

[0037] As can be seen from the above embodiments, by setting at least two sets of optical signal emitting units, the optical signal emitting range can be guaranteed to cover the detection range of the sensing device in multiple detection modes, thereby ensuring the multi-mode detection effect of the sensing device.

[0038] In this embodiment, the range hood further includes a controller electrically connected to the optical signal transceiver 4 and the drive device 5, respectively. The controller controls the optical signal transmitter 6 to transmit optical signals, processes the optical signals received by the optical signal receiver 7, and controls the drive device 5 to drive the sensor body 1 to rotate around the horizontal axis of the range hood. Preferably, the controller can adjust the operating current of the optical signal transmitter 6 through a constant current circuit to control the transmission power of the optical signal transmitter 6.

[0039] As can be seen from the above embodiments, by adjusting the operating current of the optical signal transmitter through a constant current circuit, the transmission power of the optical signal transmitter can be adjusted more precisely.

[0040] In one specific embodiment, the multiple detection modes of the sensing device may include: hand gesture recognition detection mode, human body induction detection mode, cookware height detection mode, and oil fume concentration detection mode. Specifically, the controller can drive the sensing device into a certain detection mode according to the working state of the range hood, and adjust the working state of the range hood according to the detection results under that detection mode, thereby adjusting the detection mode of the sensing device.

[0041] In an optional embodiment, when the sensing device operates in the hand gesture recognition detection mode, the detection direction of the sensing device body 1 is located between the front and the bottom of the range hood, and the signal transmission power of the optical signal transmitting device 6 is a first power. Preferably, in this detection mode, the detection direction of the sensing device body 1 is located directly in front of the range hood.

[0042] Specifically, the hand gesture recognition detection mode is used to detect the user's hand gesture, thereby controlling the range hood to turn on and off. The controller can control the light signal transmitter to emit a light signal with a power of the first power, and identify the hand gesture by analyzing the light signal received by the light signal receiver that is reflected by the object.

[0043] In an optional embodiment, when the sensing device operates in human body detection mode, the detection direction of the sensing device body 1 is located between 45° above and 45° below the front of the range hood, and the signal transmission power of the optical signal transmitting device 6 is a second power, which is greater than the first power. Preferably, in this detection mode, the detection direction of the sensing device body 1 is located directly in front of the range hood.

[0044] Specifically, the human body detection mode is used to detect whether there is a person in front of the range hood, thereby controlling the range hood to wake up and enter standby mode. The controller can control the light signal transmitter to emit a light signal with a second power, and analyze the light signal reflected by the object received by the light signal receiver to identify whether there is a person in front of the range hood. Optionally, the second power is generally greater than the first power, thereby achieving a longer sensing distance.

[0045] In an optional embodiment, when the sensing device operates in the cookware height detection mode, the detection direction of the sensing device body 1 is towards the cookware placement area below the range hood, and the signal transmission power of the optical signal transmitting device 6 is the third power.

[0046] Specifically, the cookware height detection mode is used to detect the height of the cookware from the range hood, thereby automatically adjusting the height of the range hood or preventing it from colliding with the cookware during its descent. In cookware height detection mode, the sensor's detection direction (light signal emission direction) is towards the lower rear of the range hood, and the detection direction is at a fixed position below the area where the range hood might collide with the cookware. The controller controls the light signal emitting device to emit a light signal with a third power. By analyzing the light signal received by the light signal receiving device and reflected by objects, it identifies whether a cookware is present in the collision-prone area below the range hood. Optionally, the third power is generally greater than the first power, thereby achieving more accurate cookware height detection.

[0047] In an optional embodiment, when the sensing device operates in the oil fume concentration detection mode, the detection direction of the sensing device body 1 is towards the smoke inlet of the range hood, and the signal transmission power of the optical signal transmitting device 6 is the fourth power.

[0048] Specifically, the fume concentration detection mode is used to detect the concentration of cooking fumes during the cooking process, thereby adjusting the suction power of the range hood. In this mode, the sensor's detection direction (light signal emission direction) is towards the lower rear of the range hood, specifically at a fixed position near the air inlet between the range hood's smoke inlet and the cookware. The controller controls the light signal emitting device to emit a light signal with a fourth power level, and identifies the fume concentration during cooking by analyzing the light signal reflected from objects by the light signal receiving device. Optionally, the fourth power level is generally higher than the first power level, thus achieving more accurate fume concentration detection.

[0049] As can be seen from the above embodiments, when the sensing device operates in different detection modes, the detection direction (light signal emission direction) and the signal emission power of the light signal emitting device can be adjusted in a targeted manner to ensure the detection effect of the sensing device in the corresponding detection mode, thereby realizing the intelligent control of the range hood and improving the user experience of using the range hood.

[0050] This embodiment also provides a flowchart illustrating a control method for a sensing device applied to a range hood. Specifically, the control method may include the following steps: S1: When the range hood is in its initial state, the default detection mode of the sensor is the human body detection mode. If no person is detected, the human body detection mode is maintained. Otherwise, proceed to S2.

[0051] S2: The sensor switches to hand gesture recognition detection mode. If a hand gesture is detected, proceed to S3; otherwise, maintain hand gesture recognition detection mode. If the detection time of hand gesture recognition detection mode expires, return to S1.

[0052] S3: The sensor switches to cookware height detection mode. Upon a hand gesture command, the range hood is turned on and begins to descend. If a collision with the cookware is detected, the range hood stops descending and proceeds to S4; otherwise, the range hood continues to descend to the set position and proceeds to S4.

[0053] S4: The sensor switches to oil fume concentration detection mode. If an oil fume signal is detected, the range hood's suction power (exhaust volume) is adjusted according to the oil fume concentration; if no oil fume signal is detected, proceed to S5.

[0054] Specifically, during the process of the driving device driving the sensing device into the S5 state, the housing facing the lens of the optical signal transmitter and the housing facing the lens of the optical signal receiver will come into contact with the cleaning device installed on the smoke hood, thereby cleaning the housing facing the lens of the optical signal transmitter and the housing facing the lens of the optical signal receiver to avoid contamination.

[0055] S5: The sensor switches to human detection mode. If no person is detected, the range hood's suction power is further reduced to decrease noise and energy consumption, then it returns to S4. If a person is detected, it is determined that cooking may be finished and the range hood needs to be turned off, then it proceeds to S6.

[0056] S6: The sensor switches to hand gesture recognition detection mode. If a hand gesture is detected, the range hood shuts off and returns to S1. Otherwise, it remains in hand gesture recognition detection mode, and returns to S4 if the detection time expires.

[0057] In this embodiment, the range hood equipped with the sensing device can also be equipped with an intelligent voice control module. The intelligent voice control module includes a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the sensing device to operate in the corresponding detection mode, and adjusts the working state of the range hood according to the detection results in the corresponding detection mode, thereby realizing intelligent control of the range hood and improving the ease of use for users.

[0058] As can be seen from the above embodiments, the controller can drive the sensor to enter a certain detection mode according to the working state of the range hood, and adjust the working state of the range hood according to the detection results in this detection mode, thereby adjusting the detection mode of the sensor. Through the intelligent sensing of the sensor, the intelligent control of the range hood is realized, improving the ease of use for users. In addition, by setting a cleaning device that contacts the outer surface of the sensor body, the cleaning device can clean the outer surface of the sensor body housing during the rotation of the sensor body, improving the cleaning efficiency and cleaning effect of the sensor, thereby effectively saving the hardware cost and manual cleaning cost of the range hood product.

[0059] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

[0060] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0061] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A sensing device for use in range hoods, characterized in that, The sensing device includes: a sensing device body (1) and a cleaning device (2) that contacts the outer surface of the sensing device body (1); the sensing device body (1) includes: a housing (3), an optical signal transceiver (4) disposed inside the housing, and a driving device (5). The optical signal transceiver device (4) includes an optical signal transmitter (6) and an optical signal receiver (7). The optical signal transmitter (6) is used to switch between multiple signal transmission powers, and each signal transmission power is suitable for one of the multiple detection modes of the sensing device. The driving device (5) is used to drive the sensor body (1) to rotate around the horizontal axis of the range hood, so as to switch between multiple detection directions of the sensor body (1), and the multiple detection directions correspond one-to-one with the multiple detection modes. The cleaning device (2) is used to clean the outer surface of the housing (3) during the rotation of the sensing device body (1).

2. The sensing device according to claim 1, characterized in that, The range hood includes a smoke collection hood (8), the sensing device is disposed at the front end of the smoke collection hood (8), and the horizontal axis is parallel to the front edge of the smoke collection hood (8).

3. The sensing device according to claim 2, characterized in that, The sensing device body (1) is disposed in the groove at the front end of the smoke hood (8), and the cleaning device (2) is disposed on the edge of the groove.

4. The sensing device according to claim 3, characterized in that, The main body (1) of the sensing device is cylindrical, and the groove is semi-cylindrical.

5. The sensing device according to claim 1, characterized in that, The cleaning device (2) is made of a flexible and soft material.

6. The sensing device according to claim 1, characterized in that, The optical signal transmitting device (6) includes at least two sets of optical signal transmitting units, and the optical signal receiving device (7) includes at least one set of optical signal receiving units.

7. The sensing device according to any one of claims 1 to 6, characterized in that, When the sensing device operates the hand gesture recognition detection mode among the multiple detection modes, the detection direction of the sensing device body (1) is located between the front and the bottom of the range hood, and the signal transmission power of the optical signal transmitting device (6) is the first power.

8. The sensing device according to any one of claims 1 to 6, characterized in that, When the sensing device operates the human body sensing detection mode among the multiple detection modes, the detection direction of the sensing device body (1) is between 45° above and 45° below the front of the range hood, and the signal transmission power of the optical signal transmitting device (6) is the second power, which is greater than the first power.

9. The sensing device according to any one of claims 1 to 6, characterized in that, When the sensing device operates the cookware height detection mode among the multiple detection modes, the detection direction of the sensing device body (1) is towards the cookware placement area below the range hood, and the signal transmission power of the optical signal transmitting device (6) is the third power.

10. The sensing device according to any one of claims 1 to 6, characterized in that, When the sensing device operates the oil fume concentration detection mode among the multiple detection modes, the detection direction of the sensing device body (1) is towards the smoke inlet of the range hood, and the signal transmission power of the optical signal transmitting device (6) is the fourth power.

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