Self-powered sterilizer based on piezoelectric effect
By introducing a piezoelectric power generation system into the sterilizer, mechanical energy is converted into electrical energy to power the sterilizer, solving the problem of traditional sterilizers being not environmentally friendly and energy-efficient, and realizing an environmentally friendly and energy-efficient self-powered sterilizer power supply method.
Patent Information
- Application Number
- CN202422899060.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing disinfection machines mainly rely on traditional energy sources for power, which makes them less environmentally friendly and energy-efficient.
A self-powered system based on the piezoelectric effect is adopted, including a piezoelectric power generation module, a boost power supply module, a voltage stabilizing circuit module, an energy storage module, and a disinfectant booster pump. It uses the mechanical deformation of piezoelectric materials to generate electrical energy and supplies power to the disinfection machine through the self-powered system.
The disinfection machine has achieved an environmentally friendly and energy-saving power supply method, reducing dependence on traditional energy sources. It is suitable for various places, especially those where electricity is inconvenient, thus avoiding energy waste.
Smart Images
Figure CN223774087U_ABST
Abstract
Description
Technical Field
[0001] This utility model patent relates to the field of disinfection machine technology, specifically a self-powered disinfection machine based on the piezoelectric effect. Background Technology
[0002] As people's living standards improve, the importance of hygiene products in daily life is becoming increasingly prominent. Disinfectants and hand sanitizers are now widely used in public places, and disinfection machines are also entering people's lives, especially in large venues such as hospitals and shopping malls, where automatic disinfection machines are widely installed and used. Disinfection machines come in various types, from large-scale machines with a large spray area to small machines placed in public places for hand disinfection. Taking small hand disinfection machines as an example, their working principle is mostly based on a built-in water pump that draws disinfectant and sprays it through nozzles. The disinfectant kills germs upon contact with the skin, and the water pump is the most important electrical component within the machine.
[0003] Meanwhile, with the continuous development of science and technology, piezoelectric power generation and its energy storage technology have come into view. Piezoelectric power generation harvests energy based on the inherent positive piezoelectric effect of novel piezoelectric materials. When a piezoelectric material undergoes mechanical deformation, a potential difference is generated between its upper and lower surfaces. Connecting this potential difference to an external circuit allows for the output of electrical energy. Mechanical deformation is ubiquitous in our surroundings; pedestrians, cars, and machines all generate mechanical deformation. This power generation method based on mechanical deformation has broad application prospects. Mechanical energy generated in the environment can be converted into electrical energy required by electronic devices, providing new energy solutions for multiple fields.
[0004] Currently, disinfection machines are widely used in various occasions, and their energy consumption is also huge. With the widespread use of new energy sources, we are no longer limited to using traditional energy sources for power supply. However, most disinfection machines still rely on traditional energy sources for power supply, which is not environmentally friendly and energy-saving. How to combine piezoelectric power generation technology with disinfection machines to reduce energy consumption is an urgent problem to be solved. Utility Model Content
[0005] The present invention aims to provide a self-powered sterilizer based on the piezoelectric effect, which is mainly used to solve the technical problem that existing sterilizers mainly rely on traditional energy sources for power supply, which is not environmentally friendly and energy-saving.
[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0007] A self-powered disinfection machine based on the piezoelectric effect includes a disinfection body for spraying disinfectant and a self-powered system for supplying power to the disinfection body. The self-powered system includes a piezoelectric power generation module, a boost power supply module, a voltage stabilizing circuit module, an energy storage module, and a disinfectant booster pump built into the disinfection body, all connected in sequence.
[0008] Preferably, the energy storage module is a lithium battery pack or a supercapacitor.
[0009] Preferably, the piezoelectric power generation module includes a piezoelectric power generation unit electrically connected to the boost power module, and the piezoelectric power generation unit includes a power generation component, which is a PVDF piezoelectric film or a piezoelectric ceramic power generation sheet.
[0010] Preferably, the piezoelectric power generation module includes a housing, the upper surface of which has a plurality of grooves for placing piezoelectric power generation units, and the piezoelectric components are located above the groove openings; a cloth blanket is provided on the upper surface of the housing, and the lower surface of the cloth blanket is in contact with the piezoelectric components.
[0011] Preferably, the disinfection machine body is equipped with an atomizing nozzle and a disinfectant storage device, and the two ends of the disinfectant booster pump are respectively connected to the disinfectant storage device and the atomizing nozzle.
[0012] Preferably, the disinfection body has an inwardly recessed disinfection zone in the middle, the atomizing nozzle is installed at the top of the disinfection zone, a drain trough is installed at the bottom of the disinfection zone, and a drain outlet is installed at the bottom of the drain trough.
[0013] Preferably, an infrared sensor is also installed on the disinfection machine body and located in the disinfection area to sense the user's disinfection area and control whether the disinfectant booster pump is working. The infrared sensor is electrically connected to the disinfectant booster pump.
[0014] Preferably, the energy storage module is also connected to an external power source that can provide a stable voltage.
[0015] Preferably, the top of the disinfection machine is equipped with a disinfectant inlet, which is connected to the disinfectant storage device.
[0016] The beneficial effects of this utility model are as follows:
[0017] 1. The piezoelectric power generation module in this solution can be laid in public areas. The power generation component will be converted into electrical energy by the mechanical energy of pedestrians or vehicles (or any frequently moving objects) stepping on it. The intermittent electrical energy is then stored in the energy storage module through the booster power module and the voltage stabilizing circuit module. The energy storage module powers the disinfectant booster pump, enabling the disinfection machine to spray disinfectant normally. Compared with the traditional external stable power supply mode, the power supply method of this solution is more environmentally friendly and energy-saving. It can also be applied to many places where it is inconvenient to provide electricity, solving the technical problem that the existing disinfection machines mainly rely on traditional energy sources for power supply, which is not environmentally friendly and energy-saving enough.
[0018] 2. The housing of the piezoelectric power generation module protects the piezoelectric power generation unit while allowing the power generation component to protrude from the groove surface without hindering mechanical movement. Pressure is applied to the power generation component through the cloth blanket. During installation, the piezoelectric power generation module can be placed directly at the application site or a pit can be dug at the application site and the piezoelectric power generation module can be embedded into the pit, making it parallel to the ground. At the same time, the number of piezoelectric power generation units can be flexibly designed according to the amount of mechanical energy generated in the application scenario (such as pedestrian flow, vehicle flow), providing sufficient energy for the energy storage module while avoiding energy waste. Attached Figure Description
[0019] Figure 1 This is a three-dimensional schematic diagram of a self-powered sterilizer based on the piezoelectric effect, which is the subject of this utility model patent. Figure 1 ;
[0020] Figure 2 This is a three-dimensional schematic diagram of a self-powered sterilizer based on the piezoelectric effect, which is the subject of this utility model patent. Figure 2 ;
[0021] Figure 3 This is a schematic diagram of the internal structure of a self-powered sterilizer based on the piezoelectric effect, which is a patented utility model.
[0022] Figure 4 This is a schematic diagram of the piezoelectric power generation module structure of a self-powered disinfection machine based on the piezoelectric effect, which is a utility model patent.
[0023] Figure 5 This is a schematic diagram of the piezoelectric power generation module structure of a self-powered disinfection machine based on the piezoelectric effect (without a cloth blanket) according to this utility model patent.
[0024] Figure 6 This is a schematic diagram of the piezoelectric power generation unit structure of a self-powered disinfection machine based on the piezoelectric effect, according to this utility model patent.
[0025] Figure 7 This is a power supply process diagram of a self-powered sterilizer based on the piezoelectric effect, which is the subject of this utility model patent.
[0026] The reference numerals in the accompanying drawings of the instruction manual include: 1. Disinfection machine body; 11. Nozzle; 12. Infrared sensor; 13. Drain outlet; 14. Disinfectant storage device; 15. Disinfectant booster pump; 16. Energy storage module; 17. Atomizing nozzle; 2. Base; 3. Equipment switch; 4. Display screen; 5. Drain tank; 6. Disinfection zone; 7. Disinfectant filling port; 8. Charging interface; 9. Blanket; 92. Housing; 93. Piezoelectric power generation unit; 931. Mounting block; 932. Power generation component. Detailed Implementation
[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Example 1:
[0029] like Figure 1 As shown, this embodiment provides a self-powered sterilizer based on the piezoelectric effect, including a sterilizer body 1 and a self-powered system.
[0030] like Figure 1 As shown, the disinfection machine body 1 is equipped with an atomizing nozzle 17 and a disinfectant storage device. A disinfectant filling port 7 is installed on the top and connected to the disinfectant storage device 14. A display screen 4 is provided on the front of the disinfection machine body 1 to display the working status of the disinfection machine body 1. A device switch 3 is also provided below the display screen 4. Turning off the device switch 3 will shut down the device. A recessed disinfection zone 6 is provided in the middle of the disinfection machine body 1. The atomizing nozzle 17 is installed on the top of the disinfection zone 6. The nozzle 11 of the atomizing nozzle 17 can spray out a mist of disinfectant. A drain trough 5 is installed under the base 2 of the disinfection machine body 1. A drain port 13 is provided at the bottom of the drain trough 5.
[0031] like Figure 7 As shown, the self-powered system includes a piezoelectric power generation module, a boost power supply module, a voltage regulator circuit module, an energy storage module 16, and a disinfectant booster pump 15, which are connected in sequence.
[0032] The piezoelectric power generation module includes a piezoelectric power generation unit 93 electrically connected to the boost power supply module. There can be several piezoelectric power generation units 93. The piezoelectric power generation unit 93 is an important component of the entire device. The power generation component 932 is a piezoelectric ceramic power generation sheet. The average voltage generated by the piezoelectric ceramic power generation sheet used in this scheme is 3V at the frequency of simulating human walking.
[0033] Table 1 Technical parameters of piezoelectric ceramic generators
[0034]
[0035] Mechanical energy in the environment occurs randomly. The electrical signals generated by piezoelectric ceramic generators are extremely weak and cannot be directly connected in series with a power source to supply power. Voltage amplification is required. Generally, a boost circuit is used to amplify the voltage. This design uses a boost power supply module that can be directly connected to a battery for charging and has anti-backflow function. Its main function is to receive and amplify the electrical signals generated by the piezoelectric ceramic generators. During testing, by applying pressure to the piezoelectric ceramic generators and adjusting the voltage regulation resistor, the boost power supply module can output a 12V electrical signal, which is then used to charge the battery through subsequent voltage regulation.
[0036] The voltage of the boost power supply module is not constant, so voltage regulation is required. This embodiment uses a voltage regulator amplifier based on LM358, which can regulate and amplify sine waves, weak AC signals, or positive and negative pulse signals. By adjusting the potentiometer on the LM358 chip, the signal output from the boost power supply module can be regulated and amplified.
[0037] The energy storage module 16 uses a lithium battery pack, which consists of three lithium batteries. Using three lithium batteries may pose a safety hazard. Therefore, the three lithium batteries are connected in series using a lithium battery protection board HXYP-3S-CMO2 to provide overcharge protection, over-discharge protection, overcurrent protection, short circuit protection, temperature protection, and equalization protection for the lithium batteries.
[0038] Example 2:
[0039] Based on the above embodiments, this embodiment, for example... Figure 4 , Figure 5 , Figure 6 As shown, the piezoelectric power generation module has a housing 92, and the upper surface of the housing 92 has several grooves for placing the piezoelectric power generation unit 93, such as... Figure 6 As shown, the piezoelectric power generation unit 93 includes a mounting block 931 and a power generation component 932 mounted on the mounting block 931. The power generation component 932 is a piezoelectric ceramic power generation sheet, and the piezoelectric ceramic power generation sheet is located above the groove opening. A cloth 9 is provided on the upper surface of the housing 92, and the thickness of the cloth 9 is 1-2 cm (the number of piezoelectric power generation units 93 is designed according to the mechanical energy generation of the usage scenario, such as pedestrian flow and vehicle flow). The size of each groove matches the piezoelectric ceramic power generation sheet. Figure 5Only one piezoelectric power generation unit 93 is shown in the structural diagram. The remaining grooves can be equipped with piezoelectric power generation units 93 as needed during use. The housing 92 has through holes on the four side walls of the grooves for wires to pass through. The lower surface of the cloth 9 is in contact with the piezoelectric ceramic power generation sheet. The cloth 9 is made of a wear-resistant and elastic material to ensure that pressure can be effectively transmitted to the piezoelectric ceramic power generation sheet.
[0040] In practical applications, piezoelectric power generation modules are laid in public areas, such as the ground at the entrance of shopping malls or the entrance and exit of parking lots, where trampling occurs frequently. When pedestrians or vehicles step on the carpet 9, they repeatedly apply pressure to the piezoelectric ceramic power generation sheet, generating current on the piezoelectric ceramic power generation sheet. The current is then conducted to the boost power supply module through wires, converting mechanical energy into electrical energy. After being processed by the boost power supply module and the voltage stabilizing circuit module, the electrical energy is stored in the lithium battery pack.
[0041] An infrared sensor 12 is installed on the disinfection unit 1 and within the disinfection zone 6 to sense the user's body part and control whether the disinfectant booster pump 15 is working. The infrared sensor 12 is electrically connected to the disinfectant booster pump 15. When the user puts their hand into the disinfection zone 6, the infrared sensor 12 senses it, and the lithium battery pack powers the disinfectant booster pump 15. The disinfectant booster pump 15 then delivers the disinfectant from the disinfectant storage device to the atomizing nozzle 17 for spraying disinfection.
[0042] This solution stores the electrical energy generated by the piezoelectric power generation module in a lithium battery pack after being processed by a self-powered system, providing continuous power support for the disinfectant booster pump 15, reducing reliance on traditional external power sources, and achieving environmentally friendly and energy-saving disinfection operations. At the same time, the number of piezoelectric power generation units 93 can be flexibly designed according to the actual scenario to avoid energy waste.
[0043] The energy storage module 16 is also connected to an external power supply that can provide a stable voltage. The external power supply can be connected as needed through the charging interface 8 on the side of the sterilizer 1.
[0044] When the energy storage module 16 is low on power but a large amount of stable power is needed in a short time (such as the self-powered disinfection machine in this device used in a large-scale epidemic prevention inspection site, which is used frequently and consumes power too quickly), the piezoelectric power generation module cannot provide the required power quickly. It can charge the lithium battery by controlling the discharge of the external power supply, while the piezoelectric power generation module continues to work as a supplementary power source to continuously replenish the energy storage module 16, thus still achieving the purpose of saving energy.
[0045] Example 3:
[0046] Unlike the above embodiments, the power generation component 932 can also be a PVDF piezoelectric film.
[0047] Example 4:
[0048] Unlike the above embodiments, the energy storage module 16 can also be a supercapacitor. Supercapacitors can be charged and discharged quickly, which can better adapt to the frequent start-stop operation of the sterilizer and improve energy utilization efficiency.
[0049] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A self-powered sterilizer based on the piezoelectric effect, characterized in that: It includes a disinfection machine body for spraying disinfectant and a self-powered system for supplying power to the disinfection machine body. The self-powered system includes a piezoelectric power generation module, a boost power supply module, a voltage stabilizing circuit module, an energy storage module, and a disinfectant booster pump built into the disinfection machine body, which are connected in sequence.
2. The self-powered sterilizer based on the piezoelectric effect according to claim 1, characterized in that: The energy storage module is a lithium battery pack or a supercapacitor.
3. A self-powered sterilizer based on the piezoelectric effect according to claim 2, characterized in that: The piezoelectric power generation module includes a piezoelectric power generation unit electrically connected to the boost power module. The piezoelectric power generation unit includes a power generation component, which is a PVDF piezoelectric film or a piezoelectric ceramic power generation sheet.
4. A self-powered sterilizer based on the piezoelectric effect according to claim 1, characterized in that: The piezoelectric power generation module includes a housing, the upper surface of which has several grooves for placing piezoelectric power generation units, and the piezoelectric components are located above the groove openings; a cloth blanket is provided on the upper surface of the housing, and the lower surface of the cloth blanket is in contact with the piezoelectric components.
5. A self-powered sterilizer based on the piezoelectric effect according to claim 1, characterized in that: The disinfection machine is equipped with an atomizing nozzle and a disinfectant storage device. The two ends of the disinfectant booster pump are connected to the disinfectant storage device and the atomizing nozzle, respectively.
6. A self-powered sterilizer based on the piezoelectric effect according to claim 5, characterized in that: The disinfection unit has an inwardly recessed disinfection zone in the middle, the atomizing nozzle is installed on the top of the disinfection zone, the bottom of the disinfection zone is equipped with a drain trough, and the bottom of the drain trough is equipped with a drain outlet.
7. A self-powered sterilizer based on the piezoelectric effect according to claim 6, characterized in that: An infrared sensor is also installed on the disinfection machine body and located in the disinfection area to sense the user's disinfection area and control whether the disinfectant booster pump is working. The infrared sensor is electrically connected to the disinfectant booster pump.
8. A self-powered sterilizer based on the piezoelectric effect according to claim 1, characterized in that: The energy storage module is also connected to an external power source that can provide a stable voltage.
9. A self-powered sterilizer based on the piezoelectric effect according to claim 5, characterized in that: The top of the disinfection machine is equipped with a disinfectant inlet, which is connected to the disinfectant storage device.