Intelligent lifting hand dryer and control method thereof

Abstract

The application relates to the technical field of hand dryers, and discloses an intelligent lifting hand dryer and a control method thereof, which comprises a hand dryer body and an intelligent lifting assembly. The intelligent lifting assembly comprises a shell, an intelligent control module, a memory alloy lifting module, a cold and hot liquid supply module and a hanging seat. The hand dryer body is sleeved outside the hanging seat and is slidingly connected to the surface of the shell. The intelligent control module is arranged at the top of the shell and is electrically connected with the cold and hot liquid supply module. The power supply in the hand dryer body supplies power to the intelligent control module. The intelligent lifting hand dryer detects the height difference between the user's hand and the shell through the intelligent control module, divides the height difference into multiple gears, improves the use comfort, adopts a split type design, does not need to make large-scale changes to the existing hand dryer body, and reduces the production difficulty and cost. The control method describes the specific process of the intelligent control module in controlling the cooperative work of various components according to the sensing signal, realizes automatic height adjustment, and improves the use experience.

Description

Technical Field

[0001] This invention relates to the technical field of public health facilities, and in particular to an intelligent lifting hand dryer with a user-friendly height adjustment function and its control method. Background Technology

[0002] In modern life, with people's increasing awareness of personal hygiene and environmental protection, hand dryers are becoming increasingly common in public places such as restrooms and restaurants. As a convenient hygiene and cleaning device, hand dryers can quickly and effectively help users dry their hands, reduce paper towel waste, and improve hygiene levels.

[0003] In the prior art, for example, patent publication number CN 105025765 B discloses a hand dryer in which the control device is designed with a normal operating mode and a motor heating operating mode. In the normal mode, the motor drives air to dry the hands, and this mode is activated by a sensor. In the heating mode, the stator and rotor of the motor are energized and heated to a predetermined temperature so that the motor can output heated air even when the normal mode is turned on, thereby improving the drying efficiency.

[0004] However, traditional hand dryers are usually installed at a fixed height, which limits their applicability and user experience to some extent. For users with significant differences in height, the fixed-height installation method may cause inconvenience or even discomfort during use, especially for children and shorter adults who may find it difficult to adapt.

[0005] To address these issues, some manufacturers have attempted to improve the adaptability and user comfort of hand dryers by manually or automatically adjusting their height. However, existing solutions often suffer from complex operation, limited adjustment range, and slow response time, failing to meet the need for quick and precise adjustments based on different user requirements.

[0006] Furthermore, existing hand dryers suffer from drawbacks such as high energy consumption, complex maintenance, and high noise levels, all of which affect their market penetration and user experience. Therefore, developing a hand dryer that intelligently adjusts its height based on the user's height, while also featuring high energy efficiency, low noise operation, and ease of maintenance has become a crucial industry need.

[0007] This invention addresses the limitations of traditional hand dryers in height adjustment by providing an intelligent lifting hand dryer. By integrating an intelligent lifting component and a temperature-sensitive memory alloy material, this hand dryer can automatically adjust its height according to the user's height, thus providing a more personalized and comfortable user experience. Simultaneously, through optimized design of its heating and liquid circulation systems, energy consumption is effectively reduced, and the device's response speed and ease of maintenance are improved, significantly enhancing the overall performance and market competitiveness of the hand dryer. Summary of the Invention

[0008] The present invention aims to at least partially solve one of the technical problems in the related art.

[0009] Therefore, the purpose of this invention is to propose an intelligent lifting hand dryer that can precisely adjust the height of the hand dryer body to easily adapt to the needs of people of different heights, ensuring that users maintain the most comfortable standing posture during use, allowing each user to enjoy personalized service, and greatly improving the user experience. This intelligent lifting hand dryer adopts an innovative split-type structural design, with the intelligent lifting component and the hand dryer body separated, eliminating the need for large-scale modifications to existing hand dryer products. It combines intelligent functions such as lifting adjustment with the excellent performance of traditional hand dryers, significantly reducing production difficulty and cost while ensuring performance, thus possessing good economic value and market prospects.

[0010] To achieve the above objectives, this invention proposes an intelligent lifting hand dryer, comprising a hand dryer body and an intelligent lifting assembly. The intelligent lifting assembly includes a housing fixed to a wall or other mounting location, an intelligent control module, a shape memory alloy lifting module, a hot and cold liquid supply module, and a mounting bracket. The shape memory alloy lifting module is disposed inside the housing, and the hot and cold liquid supply module is also disposed inside the housing and located on one side of the bottom of the shape memory alloy lifting module, connected to the shape memory alloy lifting module. The mounting bracket is symmetrically and slidably connected to the surface of the housing and fixedly connected to the shape memory alloy lifting module by locking bolts. The hand dryer body is sleeved on the outside of the mounting bracket and slidably connected to the surface of the housing. The intelligent control module is disposed at the top of the housing and electrically connected to the hot and cold liquid supply module, with the power source in the hand dryer body supplying power to the intelligent control module.

[0011] This invention discloses an intelligent lifting hand dryer that can precisely adjust its height to easily adapt to the needs of people of different heights, ensuring that users maintain the most comfortable standing posture during use. This allows each user to enjoy personalized service and greatly enhances the user experience. The device adopts a split design, which achieves height adjustment without requiring large-scale modifications to existing hand dryers, greatly reducing production difficulty and costs. At the same time, the split design also gives purchasing users greater choice; they can flexibly select the configuration they need according to their own requirements without additional expenses.

[0012] In summary, this device enables height adjustment, meeting users' needs for comfortable standing posture and personalized services. Its modular design greatly reduces production and purchasing costs, bringing users a more convenient and economical experience.

[0013] In addition, the intelligent lifting hand dryer proposed in the above application may also have the following additional technical features:

[0014] Specifically, the intelligent control module includes a sensor base, a human infrared sensor, an ultrasonic ranging sensor, a sub-controller, and a wind speed sensor. The sensor base is snapped into and fixed to the top of the housing. The human infrared sensor and the ultrasonic ranging sensor are respectively fixedly connected to the surface of the sensor base and arranged left and right along the X-axis. The sub-controller is bolted to the top wall inside the housing. The power supply in the hand dryer body supplies power to the sub-controller. The sub-controller includes a mounting box, a microprocessor, and a height judgment module. The mounting box is bolted to the top wall inside the housing. The microprocessor and the height judgment module are respectively fixedly connected to the inner wall of the mounting box and arranged left and right along the X-axis. The wind speed sensor is fixedly connected to the inner wall of the air inlet at the bottom of the hand dryer body. The outputs of the human infrared sensor, the height judgment module, and the wind speed sensor are respectively connected to the input of the microprocessor. The output of the ultrasonic ranging sensor is connected to the input of the height judgment module.

[0015] Specifically, the shape memory alloy lifting module includes a lower fixed plate frame, a middle sliding plate frame, an upper sliding plate frame, a top connecting plate frame, three sets of limiting sleeves, and three sets of shape memory alloys. The lower fixed plate frame is fixedly connected to the inner wall of the housing. The middle sliding plate frame, the upper sliding plate frame, and the top connecting plate frame are sequentially slidably connected to the inner wall of the housing from bottom to top, and are located on one side of the top of the lower fixed plate frame. A connecting hole is provided on the surface of the top connecting plate frame corresponding to the position of the mounting bracket. The mounting bracket is fixedly connected to the top connecting plate frame by locking bolts and connecting holes. The three sets of limiting sleeves are respectively fixedly connected to the lower fixed plate frame. The fixed plate frame surface, the middle sliding plate frame surface, and the upper sliding plate frame surface are positioned correspondingly; each of the three sets of limiting sleeves has a reaction chamber inside, and each of the three sets of limiting sleeves has an installation groove at its top, which is connected to the inside of the reaction chamber; each of the three sets of shape memory alloys is disposed inside the three sets of installation grooves; one end of each of the three sets of shape memory alloys penetrates into the inside of the three sets of reaction chambers; the other end of each of the three sets of shape memory alloys is connected to the bottom of the middle sliding plate frame, the bottom of the upper sliding plate frame, and the bottom of the top connecting plate frame, respectively; all three sets of shape memory alloys are made of TI-NI shape memory alloy with two-way memory.

[0016] Specifically, the shape memory alloy lifting module further includes a limiting sleeve assembly, which includes a first sleeve, a second sleeve, a third sleeve, and a fourth column. The first sleeve is threadedly connected to the top periphery of the lower fixed plate frame, the second sleeve is threadedly connected to the top periphery of the middle sliding plate frame, the third sleeve is threadedly connected to the top periphery of the upper sliding plate frame, and the fourth column is threadedly connected to the bottom periphery of the top connecting plate frame. The first sleeve, the second sleeve, the third sleeve, and the fourth column are positioned correspondingly and are arranged along a coaxial line. One end of the second sleeve is slidably connected to the inner wall of the first sleeve, and the other end of the second sleeve is sleeved on the outer side of one end of the third sleeve. The other end of the third sleeve is sleeved on the outer side of one end of the fourth column.

[0017] Specifically, the hot and cold liquid supply module includes a first circulation supply mechanism, a second circulation supply mechanism, and a heating component. The first and second circulation supply mechanisms are respectively located inside the housing and on one side of the bottom of the shape memory alloy lifting module. The first and second circulation supply mechanisms have the same structure. The first circulation supply mechanism includes a liquid storage tank, a pump body, a first water distributor, three sets of inlet pipes, three sets of connecting seats, an inlet end, an outlet end, three sets of return pipes, a second water distributor, and a solenoid valve. The liquid storage tank is bolted to the inner wall of the housing, and the pump body is bolted to the inner wall of the housing and located on one side of the top of the liquid storage tank. The input end of the pump body is connected to the inside of the liquid storage tank, and the output end of the pump body is connected to the input end of the first water distributor. The system is as follows: three sets of connecting seats are fixedly connected to the surfaces of three sets of limiting sleeves; the liquid inlet and liquid outlet are respectively disposed on the surfaces of the three sets of connecting seats and communicate with the interior of the reaction chamber; the input ends of the three sets of liquid inlet pipes are respectively connected to the output ends of the first water distributor; the output ends of the three sets of liquid inlet pipes are respectively connected to the three sets of liquid inlet heads; the input ends of the three sets of liquid return pipes are respectively connected to the three sets of liquid outlet heads; the output ends of the three sets of liquid return pipes are respectively connected to the input ends of the second water distributor; the output end of the second water distributor communicates with the interior of the storage tank; the solenoid valves are respectively disposed on the surfaces of the three sets of liquid inlet heads and the three sets of liquid outlet heads; and the input ends of the pump body and the multiple sets of solenoid valves are respectively connected to the output ends of the microprocessor.

[0018] Specifically, the heating assembly includes an electric heating plate and a temperature sensor, wherein the electric heating plate and the temperature sensor are respectively fixedly connected to the inner wall of the liquid storage tank in the first circulation supply mechanism, the input end of the electric heating plate is connected to the output end of the microprocessor, and the output end of the temperature sensor is connected to the input end of the microprocessor.

[0019] This invention also proposes a control method for an intelligent lifting hand dryer, applied to the aforementioned intelligent lifting hand dryer, comprising the following steps:

[0020] S1) When the human infrared sensor detects a hand signal, it sends a detection signal to the microprocessor;

[0021] S2) The microprocessor controls the ultrasonic ranging sensor to detect the height difference between the shell and the hand based on the detection signal sent by the human infrared sensor;

[0022] S3) The height determination module divides the height difference into multiple levels based on the height difference data detected by the ultrasonic ranging sensor;

[0023] S4) Based on the data from the height determination module, the microprocessor controls the first circulation supply mechanism to inject heated liquid into the corresponding number of reaction chambers, causing the corresponding number of shape memory alloys to deform and thus raising the plate frame to achieve the corresponding height adjustment;

[0024] S5) After the wind speed sensor detects that the hand dryer has finished operating, it sends a detection signal to the microprocessor;

[0025] S6) The microprocessor controls the first circulation supply mechanism to empty the liquid inside the corresponding number of reaction chambers according to the detection signal sent by the wind speed sensor, and controls the second circulation supply mechanism to inject room temperature liquid into the corresponding number of reaction chambers, so that the corresponding number of shape memory alloys will deform, thereby driving the plate frame to lower and reset.

[0026] Preferably, before step S4, the method further includes:

[0027] Before the microprocessor controls the first circulation supply mechanism to inject heated liquid into the corresponding number of reaction chambers, it controls the heating component to heat the liquid inside the storage tank of the first circulation supply mechanism so that the liquid temperature is higher than the high-temperature phase transition temperature of the shape memory alloy.

[0028] Preferably, the heating assembly heats and maintains the temperature of the liquid inside the storage tank using an electric heating plate and a temperature sensor, specifically including:

[0029] The electric heating plate heats the liquid inside the storage tank until it reaches its boiling point;

[0030] After the temperature sensor detects that the liquid has reached its boiling point, it sends a detection signal to the microprocessor.

[0031] The microprocessor controls the electric heating plate to stop operating based on the detection signal sent by the temperature sensor;

[0032] When the liquid cools to the first set temperature value, the temperature sensor sends a detection signal to the microprocessor;

[0033] Based on the detection signal sent by the temperature sensor, the microprocessor controls the electric heating plate to continue running and reheat the liquid inside the storage tank until the liquid reaches the boiling point again.

[0034] Preferably, in step S4, the microprocessor controls the first circulation supply mechanism to inject heated liquid into the corresponding number of reaction chambers in stages, specifically including:

[0035] In the first step, the microprocessor controls the first circulation supply mechanism to inject heated liquid into the lower reaction chamber, which heats the lower shape memory alloy and drives the middle sliding plate, upper sliding plate, and top connecting plate to move upward.

[0036] In the second step, the microprocessor controls the first circulation supply mechanism to inject heated liquid into the middle reaction chamber, so that the middle shape memory alloy is heated and drives the upper sliding plate and the top connecting plate to move further upward;

[0037] The third step involves the microprocessor controlling the first circulation supply mechanism to inject heated liquid into the upper reaction chamber, causing the upper shape memory alloy to heat up and drive the top connecting plate frame to move further upward.

[0038] Preferably, in step S6, the microprocessor controls the second circulation supply mechanism to inject room temperature liquid into the corresponding number of reaction chambers in stages, specifically including:

[0039] In the first step, the microprocessor controls the second circulation supply mechanism to inject room temperature liquid into the upper reaction chamber, which cools the upper shape memory alloy and causes the top connecting plate to move downward;

[0040] In the second step, the microprocessor controls the second circulation supply mechanism to inject room temperature liquid into the middle reaction chamber, which cools the middle shape memory alloy and drives the upper sliding plate and the top connecting plate to move further downward;

[0041] The third step involves the microprocessor controlling the second circulation supply mechanism to inject room-temperature liquid into the lower reaction chamber, which cools the lower shape memory alloy and causes the middle sliding plate, upper sliding plate, and top connecting plate to move downwards and reset.

[0042] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0043] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0044] 1. The present invention has a reasonable structure. The intelligent lifting component set in the present invention can accurately adjust the height of the hand dryer body, making it easy to adapt to the needs of people of different heights, ensuring that users can maintain the most comfortable standing posture when using it, so that every user can enjoy personalized service and greatly improve the user experience.

[0045] 2. The intelligent lifting component in this invention is equipped with an intelligent sensing control module. The intelligent sensing control module is used to detect the height difference between the shell and the user's hand and classify the height difference to provide accurate data support for the lifting height of the hand dryer body. The intelligent sensing control module is also used to detect the operating status of the hand dryer body, so as to drive the hand dryer body to reset to the initial height after the hand dryer body finishes operating.

[0046] 3. The intelligent lifting component in this invention adopts a shape memory alloy lifting module. The shape memory alloy lifting module utilizes the phase change characteristics of shape memory alloys. By controlling temperature or stress conditions, the shape memory alloy is made to change shape, thereby driving the lifting mechanism to operate. Compared with the transmission lifting mechanism, the shape memory alloy lifting module has the advantages of fast response speed, large driving force and high reliability.

[0047] 4. The intelligent lifting component in this invention is equipped with a hot and cold liquid supply module, which can quickly and accurately adjust the temperature of the shape memory alloy, thereby efficiently triggering its deformation process and significantly improving the stability and response speed of the lifting mechanism.

[0048] 5. This invention adopts a split design, which enables height adjustment without requiring large-scale modifications to the existing hand dryer body, greatly reducing production difficulty and cost. At the same time, the split design also gives users more choices, allowing them to flexibly choose the required configuration according to their own needs without additional expenses, bringing users a more convenient and economical experience. Attached Figure Description

[0049] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0050] Figure 1 This is a schematic diagram of the structure of an intelligent lifting hand dryer according to the present invention;

[0051] Figure 2 This is a schematic diagram of the intelligent lifting component structure in an intelligent lifting hand dryer according to the present invention;

[0052] Figure 3 This is a schematic diagram of the intelligent sensing control module in an intelligent lifting hand dryer of the present invention;

[0053] Figure 4 This is a schematic diagram of the sub-controller structure in an intelligent lifting hand dryer according to the present invention;

[0054] Figure 5 This is a schematic diagram of the shape memory alloy lifting module structure in an intelligent lifting hand dryer according to the present invention;

[0055] Figure 6 This is a schematic diagram of the limiting sleeve structure in an intelligent lifting hand dryer according to the present invention;

[0056] Figure 7 This is a schematic diagram of the hot and cold liquid supply module in an intelligent lifting hand dryer according to the present invention;

[0057] Figure 8 This is a schematic diagram of the electromagnetic valve structure in an intelligent lifting hand dryer according to the present invention;

[0058] Figure 9 This is a schematic diagram of the heating component structure in an intelligent lifting hand dryer according to the present invention.

[0059] As shown in the figure:

[0060] 1. Hand dryer body; 2. Intelligent lifting assembly; 21. Housing; 22. Intelligent control module; 23. Shape memory alloy lifting module; 24. Hot and cold liquid supply module; 25. Hanging base;

[0061] 221. Sensor base; 222. Human infrared sensor; 223. Ultrasonic ranging sensor; 224. Controller; 225. Wind speed sensor; 2241. Mounting box; 2242. Microprocessor; 2243. Height determination module;

[0062] 231. Lower fixed plate frame; 232. Middle sliding plate frame; 233. Upper sliding plate frame; 234. Top connecting plate frame; 235. Limiting sleeve; 236. Shape memory alloy;

[0063] 2351. Reaction chamber; 2352. Mounting cylinder groove;

[0064] 237. Limiting sleeve assembly; 2371. First sleeve; 2372. Second sleeve; 2373. Third sleeve; 2374. Fourth column rod;

[0065] 241. First circulation supply mechanism; 242. Second circulation supply mechanism; 243. Heating component;

[0066] 2411. Storage tank; 2412. Pump body; 2413. First distributor; 2414. Inlet pipe; 2415. Connecting seat; 2416. Inlet end; 2417. Outlet end; 2418. Return pipe; 2419. Second distributor; 24110. Solenoid valve;

[0067] 2431. Electric heating plate; 2432. Temperature sensor. Detailed Implementation

[0068] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0069] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0070] like Figures 1-8 As shown in the figure, an intelligent lifting hand dryer according to an embodiment of the present invention includes a hand dryer body 1 and an intelligent lifting assembly 2. The intelligent lifting assembly 2 includes a housing 21 fixed to a wall or other suitable installation position, an intelligent control module 22, a shape memory alloy lifting module 23, a hot and cold liquid supply module 24, and a hanging bracket 25. The shape memory alloy lifting module 23 is disposed inside the housing 21, and the hot and cold liquid supply module 24 is disposed inside the housing 21 and located on one side of the bottom of the shape memory alloy lifting module 23. The hot and cold liquid supply module 24 is connected to the shape memory alloy lifting module 23. The hanging bracket 25 is symmetrically and slidably connected to the surface of the housing 21 and is fixedly connected to the shape memory alloy lifting module 23 by locking bolts. The hand dryer body 1 is sleeved on the outside of the hanging bracket 25 and slidably connected to the surface of the housing 21. The intelligent control module 22 is disposed on the top of the housing 21 and is electrically connected to the hot and cold liquid supply module 24. The power supply in the hand dryer body 1 supplies power to the intelligent control module 22.

[0071] Specifically, this device incorporates an intelligent lifting component 2 on top of the existing hand dryer body 1. The intelligent lifting component 2 can precisely adjust the height of the hand dryer body 1 to easily adapt to the needs of people of different heights, ensuring that users maintain the most comfortable standing posture during use. This allows each user to enjoy personalized service and greatly enhances the user experience. The device adopts a split design, which achieves height adjustment without requiring large-scale modifications to the existing hand dryer body 1, greatly reducing production difficulty and costs. At the same time, the split design also gives purchasing users greater choice; they can flexibly select the required configuration according to their own needs without additional expenses.

[0072] In use, the intelligent sensing control module 22 in the intelligent lifting component 2 detects the height difference between the housing 21 and the user's hand, and classifies the height difference into levels. Then, the intelligent sensing control module 22 controls the operation of the hot and cold liquid supply module 24 according to the level data. The hot and cold liquid supply module 24 injects heated liquid into the shape memory alloy lifting module 23. After the corresponding number of shape memory alloys 236 in the shape memory alloy lifting module 23 come into contact with the heated liquid, they are heated and deformed. The deformed shape memory alloys 236 drive the shape memory alloy lifting module 23 to rise in height. As the height of block 23 increases, it simultaneously moves the hanging base 25 and the hand dryer body 1 upwards, achieving height adjustment. When the hand dryer body 1 needs to be reset, the hot and cold liquid supply module 24 operates to inject room temperature liquid into the shape memory alloy lifting module 23. After the corresponding number of shape memory alloys 236 in the shape memory alloy lifting module 23 come into contact with the room temperature liquid, they cool and deform. The deformed shape memory alloys 236 drive the shape memory alloy lifting module 23 to decrease in height. As the height of the shape memory alloy lifting module 23 decreases, it simultaneously moves the hanging base 25 and the hand dryer body 1 downwards, achieving the reset of the hand dryer body 1.

[0073] In this embodiment, shape memory alloy 236 is a smart material with the ability to change its shape under specific external stimuli (such as temperature, magnetic field, or electric current). The most common stimulus is temperature, i.e., temperature-sensitive shape memory effect. The shape structure of shape memory alloy 236 can be any independent or combined shape suitable for its deformation, such as switching between vertical and curved shapes under temperature changes, or switching between folding height and size.

[0074] In one embodiment of the present invention, such as Figures 1-5 As shown, the intelligent control module 22 includes a sensor base 221, a human infrared sensor 222, an ultrasonic ranging sensor 223, a sub-controller 224, and a wind speed sensor 225. The sensor base 221 is snapped and fixed to the top of the housing 21. The human infrared sensor 222 and the ultrasonic ranging sensor 223 are respectively fixedly connected to the surface of the sensor base 221 and are positioned left and right along the X-axis. The sub-controller 224 is bolted to the inner top wall of the housing 21. The power supply in the hand dryer body 1 supplies power to the sub-controller 224. The sub-controller 224 includes a mounting box 2241, a microprocessor 2242, and... The height determination module 2243 is configured such that the mounting box 2241 is bolted to the top wall of the housing 21, the microprocessor 2242 and the height determination module 2243 are fixedly connected to the inner wall of the mounting box 2241 and are arranged left and right along the X-axis, the wind speed sensor 225 is fixedly connected to the inner wall of the air inlet at the bottom of the hand dryer body 1, the output terminals of the human infrared sensor 222, the height determination module 2243 and the wind speed sensor 225 are respectively connected to the input terminal of the microprocessor 2242, and the output terminal of the ultrasonic ranging sensor 223 is connected to the input terminal of the height determination module 2243.

[0075] It should be noted that the human infrared sensor 222 described in this embodiment is used to detect human hand information, the ultrasonic ranging sensor 223 is used to detect the height difference between the hand and the shell 21, and the wind speed sensor 225 is used to detect the operating status of the hand dryer body 1. During the drying operation, the wind speed at the air inlet at the bottom of the hand dryer body 1 will increase. The wind speed sensor 225 determines whether the hand dryer body 1 is in operation by sensing the wind speed. The microprocessor 2242 is used to process data information, and the height judgment module 2243 classifies the height difference detected by the ultrasonic ranging sensor 223 into three levels. The three levels correspond to three sets of shape memory alloys 236, realizing three height adjustments.

[0076] It should also be noted that the structure, connection relationship and control relationship of the human infrared sensor 222, ultrasonic ranging sensor 223, microprocessor 2242, height judgment module 2243 and wind speed sensor 225 are all existing technologies, and therefore will not be described in detail here.

[0077] Specifically, in use, when a hand is extended above the sensor base 221, the human infrared sensor 222 detects the hand and sends data to the microprocessor 2242. The microprocessor 2242 then activates the ultrasonic ranging sensor 223 based on this data. The ultrasonic ranging sensor 223 detects the height difference between the housing 21 and the hand. The detected data is then transmitted to the height judgment module 2243, which categorizes the height difference data and sends the categorized data back to the microprocessor 2242. The microprocessor then... 2242 controls the operation of the pump 2412 and solenoid valve 24110 in the first circulation supply mechanism 241 according to the graded data. The pump 2412 delivers the heated liquid to the corresponding number of reaction chambers 2351. The corresponding number of reaction chambers 2351 are adapted to the grade. The corresponding number of shape memory alloys 236 deform after being heated, and their height increases. The height adjustment is achieved by increasing the height of the corresponding shape memory alloys 236 to adapt to the current height of the person. Then, simply insert your hands into the hand dryer body 1 to dry them. During the drying process, the airflow at the air inlet at the bottom of the hand dryer body 1 will accelerate. The wind speed sensor 225 determines whether the hand dryer body 1 is in operation by sensing the wind speed. When the wind speed sensor 225 detects that the wind speed is lower than the set value, it means that the hand dryer body 1 has finished operating. Then, the microprocessor 2242 controls the pump 2412 and the solenoid valve 24110 in the first circulation supply mechanism 241 to stop operating based on the data detected by the wind speed sensor 225. Before the solenoid valve 24110 stops operating, the reaction chamber 2351 is filled with... After heating, the liquid flows back into the storage tank 2411. Then, the microprocessor 2242 controls the pump 2412 and the solenoid valve 24110 in the second circulation supply mechanism 242 to operate. The pump 2412 delivers room temperature liquid to the corresponding number of reaction chambers 2351. The corresponding number of reaction chambers 2351 are adapted to the gear position. The corresponding number of shape memory alloys 236 deform after cooling, and their height decreases. The height adjustment is achieved by the corresponding reduction of the height of the shape memory alloys 236, so that the height of the hand dryer body 1 is reset for the next use.

[0078] In one embodiment of the present invention, such as Figures 5-9As shown, the shape memory alloy lifting module 23 includes a lower fixed plate frame 231, a middle sliding plate frame 232, an upper sliding plate frame 233, a top connecting plate frame 234, three sets of limiting sleeves 235, and three sets of shape memory alloys 236. The lower fixed plate frame 231 is fixedly connected to the inner wall of the housing 21. The middle sliding plate frame 232, the upper sliding plate frame 233, and the top connecting plate frame 234 are sequentially slidably connected to the inner wall of the housing 21 from bottom to top, and are located on one side of the top of the lower fixed plate frame 231. A connecting hole is provided on the surface of the top connecting plate frame 234 corresponding to the position of the mounting bracket 25. The mounting bracket 25 is fixedly connected to the top connecting plate frame 234 by locking bolts and connecting holes. The three sets of limiting sleeves... Cylinders 235 are fixedly connected to the surfaces of the lower fixed plate frame 231, the middle sliding plate frame 232, and the upper sliding plate frame 233, respectively, and their positions correspond to each other. Each of the three sets of limiting sleeves 235 has a reaction chamber 2351 inside. The top of each of the three sets of limiting sleeves 235 has an installation groove 2352, which communicates with the interior of the reaction chamber 2351. Three sets of shape memory alloys 236 are respectively disposed inside the three sets of installation grooves 2352. One end of each set of shape memory alloys 236 penetrates into the interior of the three sets of reaction chambers 2351, and the other end of each set of shape memory alloys 236 is connected to the bottom of the middle sliding plate frame 232, the bottom of the upper sliding plate frame 233, and the bottom of the top connecting plate frame 234, respectively.

[0079] All three shape memory alloys 236 use TI-NI shape memory alloys with two-way memory.

[0080] It should be noted that the low-temperature phase transformation temperature of the shape memory alloy 236 described in this embodiment is set at 40 degrees Celsius, and the high-temperature phase transformation temperature is set at 80 degrees Celsius. The shape memory alloy 236 at the low-temperature phase transformation temperature is in the martensitic state, and the shape memory alloy 236 at the high-temperature phase transformation temperature is in the austenitic state. The height of the shape memory alloy 236 in the austenitic state is higher than that in the martensitic state.

[0081] Understandably, the shape memory alloy 236 only changes in height.

[0082] It should also be noted that the inner wall of the housing 21 is provided with sliding grooves to facilitate the sliding of the middle sliding plate frame 232, the upper sliding plate frame 233, and the top connecting plate frame 234.

[0083] Specifically, in use, heated liquid is injected sequentially from bottom to top into the reaction chambers 2351 of the three sets of limiting sleeves 235. When the heated liquid is injected into the lower set of reaction chambers 2351, the lower set of shape memory alloys 236 deforms, increasing its height and causing the middle sliding plate 232, upper sliding plate 233, and top connecting plate 234 to move upwards. Similarly, when the heated liquid is injected into the middle set of reaction chambers 2351, the middle set of shape memory alloys 236 deforms, increasing its height and causing the upper sliding plate 233 and top connecting plate 234 to move upwards. Finally, when the heated liquid is injected into the upper set of reaction chambers 2351, the upper set of shape memory alloys 236 deforms, increasing its height and causing the top connecting plate 234 to move upwards. These three height adjustments correspond to the three settings in the height judgment module 2243, providing good performance. When lowering the height, the heated liquid inside the reaction chambers 2351 is emptied, and then the process continues from the bottom... Room temperature liquid is injected sequentially into the reaction chambers 2351 of the three sets of limiting sleeves 235. After the room temperature liquid is injected into the lower set of reaction chambers 2351, the lower set of shape memory alloys 236 deforms, its height decreases, and it drives the middle sliding plate 232, the upper sliding plate 233, and the top connecting plate 234 to move down. After the room temperature liquid is injected into the middle set of reaction chambers 2351, the middle set of shape memory alloys 236 deforms, its height decreases, and it drives the upper sliding plate 233 and the top connecting plate 234 to move down. After the room temperature liquid is injected into the upper set of reaction chambers 2351, the upper set of shape memory alloys 236 deforms, its height decreases, and it drives the top connecting plate 234 to move down. The three height adjustments correspond to the three gears in the height judgment module 2243. During the lifting and lowering process, the top connecting plate 234 synchronously drives the hanging seat 25 to move. The movement of the hanging seat 25 synchronously drives the hand dryer body 1 to move, achieving lifting and lowering, resulting in good performance.

[0084] In one embodiment of the present invention, such as Figure 5As shown, the shape memory alloy lifting module 23 also includes a limiting sleeve assembly 237. The limiting sleeve assembly 237 includes a first sleeve 2371, a second sleeve 2372, a third sleeve 2373, and a fourth column 2374. The first sleeve 2371 is threaded to the top periphery of the lower fixed plate frame 231, the second sleeve 2372 is threaded to the top periphery of the middle sliding plate frame 232, the third sleeve 2373 is threaded to the top periphery of the upper sliding plate frame 233, and the fourth column 2374... The column rod 2374 is threaded around the bottom of the top connecting plate frame 234. The first sleeve 2371, the second sleeve 2372, the third sleeve 2373 and the fourth column rod 2374 are positioned correspondingly and are arranged along the same axis. One end of the second sleeve 2372 is slidably connected to the inner wall of the first sleeve 2371, and the other end of the second sleeve 2372 is sleeved on the outside of one end of the third sleeve 2373. The other end of the third sleeve 2373 is sleeved on the outside of one end of the fourth column rod 2374.

[0085] It should be noted that the limiting cylinder assembly 237 described in this embodiment is used to improve the structural stability when the plate is raised or lowered.

[0086] Specifically, when the middle sliding plate frame 232 rises, the bottom of the second sleeve 2372 slides upward along the inner wall of the first sleeve 2371. The top of the second sleeve 2372 drives the bottom of the third sleeve 2373, the upper sliding plate frame 233, the fourth column rod 2374, and the top connecting plate frame 234 to move upward. When the upper sliding plate frame 233 rises, the bottom of the third sleeve 2373 slides upward along the inner wall of the second sleeve 2372. The top of the third sleeve 2373 drives the fourth column rod 2374 and the top connecting plate frame 234 to move upward. When the top connecting plate frame 234 rises, the bottom of the fourth column rod 2374 slides upward along the inner wall of the third sleeve 2373.

[0087] In one embodiment of the present invention, such as Figure 2 , Figures 5-9As shown, the hot and cold liquid supply module 24 includes a first circulation supply mechanism 241, a second circulation supply mechanism 242, and a heating component 243. The first circulation supply mechanism 241 and the second circulation supply mechanism 242 are respectively disposed inside the housing 21 and located on one side of the bottom of the shape memory alloy lifting module 23. The first circulation supply mechanism 241 and the second circulation supply mechanism 242 have the same structure. The first circulation supply mechanism 241 includes a liquid storage tank 2411, a pump body 2412, and a first water distributor 24. 13. Three sets of inlet pipes 2414, three sets of connecting seats 2415, inlet end 2416, outlet end 2417, three sets of return pipes 2418, a second water distributor 2419, and a solenoid valve 24110. The storage tank 2411 is bolted to the inner wall of the housing 21, and the pump body 2412 is bolted to the inner wall of the housing 21 and located on one side of the top of the storage tank 2411. The input end of the pump body 2412 is connected to the inside of the storage tank 2411, and the output end of the pump body 2412 is connected to the first water distributor. The input end of the water dispenser 2413 is connected to the three sets of connecting seats 2415, which are respectively fixedly connected to the surfaces of the three sets of limiting sleeves 235. The liquid inlet end 2416 and the liquid outlet end 2417 are respectively set on the surfaces of the three sets of connecting seats 2415 and are connected to the inside of the reaction chamber 2351. The input ends of the three sets of liquid inlet pipes 2414 are respectively connected to the output ends of the first water distributor 2413, and the output ends of the three sets of liquid inlet pipes 2414 are respectively connected to the three sets of liquid inlet ends 2416. The three sets of return pipes... The input terminals of 2418 are connected to three sets of liquid outlet terminals 2417 respectively. The output terminals of the three sets of return liquid pipes 2418 are connected to the input terminals of the second water distributor 2419 respectively. The output terminal of the second water distributor 2419 is connected to the inside of the liquid storage tank 2411. The solenoid valves 24110 are respectively installed on the surfaces of the three sets of liquid inlet terminals 2416 and the three sets of liquid outlet terminals 2417. The input terminals of the pump body 2412 and the multiple sets of solenoid valves 24110 are respectively connected to the output terminals of the microprocessor 2242.

[0088] It should be noted that the liquid storage tank 2411 described in this embodiment contains liquid, which is distilled water.

[0089] It should also be noted that the hot and cold liquid supply module 24 is used to inject heated distilled water and room temperature distilled water into the three reaction chambers 2351 successively. The temperature of the heated distilled water is higher than the high-temperature phase transformation temperature of the shape memory alloy 236, while the temperature of the room temperature distilled water is lower than the low-temperature phase transformation temperature of the shape memory alloy 236. When the hot distilled water comes into contact with the shape memory alloy 236, it can quickly heat up and deform the shape memory alloy 236, returning it from the martensitic state to the original austenitic state. When the room temperature distilled water comes into contact with the shape memory alloy 236, it can quickly cool down and deform the shape memory alloy 236, changing it from the austenitic state to the modified martensitic state. By injecting heated distilled water into the corresponding reaction chamber 2351, the corresponding height can be adjusted, resulting in good performance.

[0090] It should also be noted that the structure, connection and control relationship of the pump body 2412 and the solenoid valve 24110 are existing technologies, so they will not be described in detail here.

[0091] Specifically, this device is equipped with a hot and cold liquid supply module 24, which includes a first circulation supply mechanism 241, a second circulation supply mechanism 242, and a heating component 243. The heating component 243 is located inside the liquid storage tank 2411 in the first circulation supply mechanism 241 and is used to heat the liquid inside the liquid storage tank 2411 in the first circulation supply mechanism 241 to make its temperature higher than the high-temperature phase transformation temperature of the shape memory alloy 236. The liquid inside the liquid storage tank 2411 in the second circulation supply mechanism 242 does not need to be heated because the liquid temperature at room temperature is lower than the low-temperature phase transformation temperature of the shape memory alloy 236, which is sufficient for the shape memory alloy 236 to deform upon contact. When heated, the shape memory alloy 236 will deform from the martensitic state back to the original austenitic state. The height of the shape memory alloy 236 in the austenitic state is higher than that in the martensitic state, thereby driving the plate frame to move and achieve height adjustment. By heating the corresponding number of shape memory alloys 236, the corresponding height adjustment can be achieved.

[0092] When the shape memory alloy 236 is heated, the solenoid valve 24110 in the first circulation supply mechanism 241 is opened by the microprocessor 2242. Then, the microprocessor 2242 controls the pump 2412 in the first circulation supply mechanism 241 to be energized and run. The pump 2412 operates to draw liquid from the storage tank 2411 and delivers it to the reaction chamber 2351 through the cooperation of the first water distributor 2413, the liquid inlet pipe 2414, and the liquid inlet end 2416. The high-temperature liquid entering the reaction chamber 2351 comes into contact with the shape memory alloy 236, and the shape memory alloy 236... 36 undergoes deformation upon heating, returning from the martensitic state to the original austenitic state. The height of the shape memory alloy 236 in the austenitic state is higher than that in the martensitic state, thereby driving the plate frame to rise and achieving height adjustment. During drainage, the solenoid valve 24110 on the pump body 2412 and the inlet end 2416 is closed. The liquid inside the reaction chamber 2351 flows back to the storage tank 2411 through the outlet end 2417, the return pipe 2418, and the second water separator 2419. Then, the solenoid valve 24110 on the outlet end 2417 is closed.

[0093] When cooling the shape memory alloy 236, the microprocessor 2242 opens the solenoid valve 24110 in the second circulation supply mechanism 242, and then the microprocessor 2242 controls the pump body 2412 of the second circulation supply mechanism 242 to be energized and run. The pump body 2412 runs to draw liquid from the storage tank 2411, and delivers it to the reaction chamber 2351 through the first water distributor 2413, the liquid inlet pipe 2414 and the liquid inlet end 2416. The room temperature liquid entering the reaction chamber 2351 comes into contact with the shape memory alloy 236, and the shape memory alloy 236... 6. Cooling causes deformation, returning from the austenitic state to the modified martensitic state. The height of the shape memory alloy 236 in the martensitic state is lower than that in the austenitic state, thereby driving the plate frame to move down and achieve height adjustment. During drainage, the solenoid valve 24110 on the pump body 2412 and the liquid inlet 2416 is closed. The liquid inside the reaction chamber 2351 flows back to the liquid storage tank 2411 through the liquid outlet 2417, the return pipe 2418, and the second water distributor 2419. Then the solenoid valve 24110 on the liquid outlet 2417 is closed.

[0094] The number of shape memory alloys 236 corresponds to the three gears in the height judgment module 2243. The microprocessor 2242 heats the corresponding number of shape memory alloys 236 according to the current gear information determined by the height judgment module 2243, thereby achieving corresponding height adjustment and achieving good performance.

[0095] In one embodiment of the present invention, such as Figure 9As shown, the heating assembly 243 includes an electric heating plate 2431 and a temperature sensor 2432. The electric heating plate 2431 and the temperature sensor 2432 are respectively fixedly connected to the inner wall of the liquid storage tank 2411 in the first circulation supply mechanism 241. The input end of the electric heating plate 2431 is connected to the output end of the microprocessor 2242, and the output end of the temperature sensor 2432 is connected to the input end of the microprocessor 2242.

[0096] It should be noted that the heating component 243 described in this embodiment is used to heat the liquid inside the liquid storage tank 2411 in the first circulation supply mechanism 241. The temperature of the heated liquid needs to be higher than the high-temperature phase transformation temperature of the shape memory alloy 236. After the shape memory alloy 236 comes into contact with the heated liquid, it is heated and deformed, returning from the martensitic state to the original austenitic state. The height of the shape memory alloy 236 in the austenitic state is higher than that in the martensitic state, thereby driving the plate frame to move to achieve height adjustment, resulting in good performance.

[0097] It should also be noted that, through the cooperation of the electric heating plate 2431 and the temperature sensor 2432, the liquid inside the storage tank 2411 can also be kept warm. The electric heating plate 2431 is energized to heat the liquid inside the storage tank 2411 until it reaches its boiling point. Once the liquid inside the storage tank 2411 reaches its boiling point, the temperature sensor 2432 transmits the detected temperature data to the microprocessor 2242. The microprocessor 2242 then controls the electric heating plate 2431 to stop operating. When the liquid cools down to a first set temperature value (note that this first set temperature value is greater than the high-temperature phase transition temperature of the shape memory alloy 236), the temperature sensor 2432... 2. The detected temperature data is transmitted to the microprocessor 2242. The microprocessor 2242 controls the electric heating plate 2431 to continue operating and heat the liquid inside the storage tank 2411 until it reaches the boiling point again. After the liquid inside the storage tank 2411 is heated to the boiling point, the temperature sensor 2432 transmits the detected temperature data to the microprocessor 2242. The microprocessor 2242 then controls the electric heating plate 2431 to stop operating. This process is repeated to heat the liquid inside the storage tank 2411 to achieve heat preservation. The temperature of the liquid after heat preservation is always higher than the high-temperature phase transformation temperature of the shape memory alloy 236, ensuring that the shape memory alloy 236 can undergo deformation in the future.

[0098] It should also be noted that the structure, connection and control relationship of the electric heating plate 2431 and the temperature sensor 2432 are existing technologies, and therefore will not be described in detail here.

[0099] In summary, the intelligent lifting hand dryer of this invention can precisely adjust the height of the hand dryer body 1 to easily adapt to the needs of people of different heights, ensuring that users maintain the most comfortable standing posture during use. This allows each user to enjoy personalized service and greatly enhances the user experience. The device adopts a split design, which achieves height adjustment without requiring large-scale modifications to the existing hand dryer body 1, greatly reducing production difficulty and cost. At the same time, the split design also gives purchasing users greater choice, allowing them to flexibly select the required configuration according to their own needs without additional expenses.

[0100] In the description of this specification, 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 invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0101] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0102] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A smart lifting hand dryer, comprising a hand dryer body (1) and a smart lifting assembly (2), characterized in that... : The intelligent lifting assembly (2) includes a housing (21) fixed to a wall or other mounting location, an intelligent control module (22), a shape memory alloy lifting module (23), a hot and cold liquid supply module (24), and a mounting bracket (25); The shape memory alloy lifting module (23) is installed inside the housing (21); it includes a lower fixed plate frame (231), a middle sliding plate frame (232), an upper sliding plate frame (233), a top connecting plate frame (234), a limiting sleeve (235), and a shape memory alloy (236); the limiting sleeve (235) is provided with a reaction chamber (2351), and the top of the limiting sleeve (235) is provided with an installation groove (2352) communicating with the inside of the reaction chamber (2351); the shape memory alloy (236) is respectively installed inside the installation groove (2352), one end of the shape memory alloy (236) penetrates into the inside of the reaction chamber (2351), and the other end is connected to the bottom of the middle sliding plate frame (232), the bottom of the upper sliding plate frame (233), and the bottom of the top connecting plate frame (234); The hot and cold liquid supply module (24) is located inside the housing (21) and on one side of the bottom of the shape memory alloy lifting module (23), and is connected to the shape memory alloy lifting module (23); it includes a first circulation supply mechanism (241), a second circulation supply mechanism (242) and a heating component (243); The mounting bracket (25) is slidably connected to the surface of the housing (21) and fixedly connected to the shape memory alloy lifting module (23); The hand dryer body (1) is sleeved on the outside of the hanging base (25) and slidably connected to the surface of the housing (21); The intelligent control module (22) is located on the top of the housing (21) and is electrically connected to the hot and cold liquid supply module (24). The power supply in the hand dryer body (1) supplies power to the intelligent control module (22).

2. The intelligent lifting hand dryer according to claim 1, characterized in that... : The lower fixed plate frame (231) is fixedly connected to the inner wall of the housing (21); the middle sliding plate frame (232), the upper sliding plate frame (233) and the top connecting plate frame (234) are slidably connected to the inner wall of the housing (21) in sequence from bottom to top, and are located on the top side of the lower fixed plate frame (231); The limiting sleeves (235) are fixedly connected to the surfaces of the lower fixed plate frame (231), the middle sliding plate frame (232), and the upper sliding plate frame (233), respectively, and their positions correspond to each other.

3. The intelligent lifting hand dryer according to claim 2, characterized in that... The shape memory alloy lifting module (23) further includes a limiting sleeve assembly (237), which includes a first sleeve (2371), a second sleeve (2372), a third sleeve (2373), and a fourth column (2374). The first sleeve (2371) is threaded around the top of the lower fixed plate frame (231), the second sleeve (2372) is threaded around the top of the middle sliding plate frame (232), the third sleeve (2373) is threaded around the top of the upper sliding plate frame (233), and the fourth column (2374) is threaded around the bottom of the top connecting plate frame (234). The first sleeve (2371), the second sleeve (2372), the third sleeve (2373), and the fourth column (2374) are positioned correspondingly and are arranged along the same axis; One end of the second sleeve (2372) is slidably connected to the inner wall of the first sleeve (2371), and the other end is sleeved on the outer side of one end of the third sleeve (2373); The other end of the third sleeve (2373) is fitted onto the outside of one end of the fourth column (2374).

4. The intelligent lifting hand dryer according to claim 1, characterized in that... : The first circulating supply mechanism (241) and the second circulating supply mechanism (242) are respectively disposed inside the housing (21) and located on one side of the bottom of the shape memory alloy lifting module (23); The first circulating supply mechanism (241) includes a liquid storage tank (2411), a pump body (2412), a first water distributor (2413), an inlet pipe (2414), a connecting seat (2415), an inlet end (2416), an outlet end (2417), a return pipe (2418), a second water distributor (2419), and a solenoid valve (24110); The liquid storage tank (2411) is filled with liquid; The pump body (2412) has its input end connected to the inside of the liquid storage tank (2411) and its output end connected to the input end of the first water distributor (2413). The inlet pipe (2414) is connected to the output end of the first water distributor (2413), and the output end is connected to the inlet end (2416); The liquid inlet (2416) and liquid outlet (2417) are disposed on the surface of the connector (2415) and communicate with the interior of the reaction chamber (2351); The inlet of the return pipe (2418) is connected to the outlet (2417), and the outlet is connected to the inlet of the second water distributor (2419). The output end of the second water distributor (2419) is connected to the inside of the liquid storage tank (2411); The solenoid valves (24110) are respectively disposed on the surfaces of the inlet end (2416) and the outlet end (2417); The input terminals of the pump body (2412) and the solenoid valve (24110) are connected to the output terminal of the intelligent control module (22).

5. The intelligent lifting hand dryer according to claim 4, characterized in that... The heating assembly (243) includes an electric heating plate (2431) and a temperature sensor (2432), which are respectively fixedly connected to the inner wall of the liquid storage tank (2411) in the first circulation supply mechanism (241). The input end of the electric heating plate (2431) is connected to the output end of the intelligent control module (22), and the output end of the temperature sensor (2432) is connected to the input end of the intelligent control module (22).

6. The intelligent lifting hand dryer according to claim 1, characterized in that... The intelligent control module (22) includes a sensor base (221), a human infrared sensor (222), an ultrasonic ranging sensor (223), a sub-controller (224), and a wind speed sensor (225). The sensing base (221) is snapped and fixed to the top of the housing (21). The human infrared sensor (222) and the ultrasonic ranging sensor (223) are respectively fixedly connected to the surface of the sensing base (221) and are arranged left and right along the X-axis. The sub-controller (224) is bolted to the top wall inside the housing (21) and includes a mounting box (2241), a microprocessor (2242), and a height determination module (2243). The mounting box (2241) is bolted to the top wall inside the housing (21). The microprocessor (2242) and the height judgment module (2243) are respectively fixedly connected to the inner wall of the mounting box (2241) and are arranged left and right along the X-axis. The wind speed sensor (225) is fixedly connected to the inner wall of the air inlet at the bottom of the hand dryer body (1); The output terminals of the human infrared sensor (222), the height determination module (2243), and the wind speed sensor (225) are respectively connected to the input terminal of the microprocessor (2242), and the output terminal of the ultrasonic ranging sensor (223) is connected to the input terminal of the height determination module (2243).

Images