Teaching toy based on Bernoulli principle
By designing an educational toy based on Bernoulli's principle, which uses a motor to drive the rotation of the wing wheels and airflow to suspend the thin ring sheet to demonstrate Bernoulli's principle, the problem of existing educational toys lacking fun and intuitiveness is solved, and a combination of fun, science and inspiration is achieved.
Patent Information
- Application Number
- CN202520270314.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing teaching aids lack interest, scientific rigor, and intuitiveness when demonstrating Bernoulli's principle, making it difficult to effectively stimulate students' learning interest.
Design an educational toy that includes a handle, motor, power supply, impeller, and circular sheet. The motor drives the impeller to rotate, and the airflow and pressure gradient are achieved through the design of the guide channel, so that the circular sheet is suspended and rotated, demonstrating Bernoulli's principle.
This educational toy combines fun, scientific rigor, and intuitiveness, allowing students to operate it independently, experience Bernoulli's principle firsthand, and enhance their learning interest.
Smart Images
Figure CN223757172U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a teaching demonstration teaching toy, concretely relates to a teaching toy based on Bernoulli principle. BACKGROUND
[0002] Bernoulli principle is one of the basic theories of fluid mechanics, and the principle describes the relationship between velocity and pressure in ideal fluid. Specifically, Bernoulli principle points out that in the stable flow of fluid, when the flow rate increases, the pressure of the fluid will decrease, and when the flow rate decreases, the pressure of the fluid will increase.
[0003] In the process of explaining Bernoulli principle to students, teachers often need to use demonstration equipment to directly show Bernoulli principle. Due to the lack of suitable demonstration teaching aids, teachers often demonstrate Bernoulli principle to students by blowing ping pong balls with a hair dryer. Although it can achieve certain demonstration purposes, the effect of demonstration in terms of intuitiveness, scientificity, inspiration and interest is not ideal. UTILITY MODEL CONTENT
[0004] The utility model solves the technical problem that the existing technology is insufficient, and provides a teaching toy based on Bernoulli principle, which integrates interest, scientificity, intuitiveness and inspiration.
[0005] The utility model adopts the technical scheme that a teaching toy based on Bernoulli principle comprises a handle, a motor, a power supply, a wing wheel and a circular ring sheet. The motor and the power supply are arranged in the handle respectively, the motor is powered by the power supply, a power switch is installed on the handle, the output end of the motor is connected with the wing wheel, a plurality of guide grooves are formed on the surface of the wing wheel, the plurality of guide grooves respectively lead to the middle part of the wing wheel, the inner diameter of the circular ring sheet is greater than the outer diameter of the middle part of the wing wheel, the wing wheel drives the surrounding air to flow after the motor is started, the air pressure of the periphery of the middle part of the wing wheel is the smallest, and the circular ring sheet is suspended on the outside of the middle part of the wing wheel and rotates around the middle part of the wing wheel.
[0006] The teaching toy integrates interest, scientificity, intuitiveness and inspiration, and can directly show Bernoulli principle. After the motor is started, the wing wheel rotates, the wing wheel drives the surrounding air to flow when rotating, based on Bernoulli principle, the air flow rate of the periphery of the middle part of the wing wheel is the largest and the air pressure is the smallest, so that the flowing air not only drives the circular ring sheet to rotate around the middle part of the wing wheel, but also makes the circular ring sheet suspended on the outside of the middle part of the wing wheel. While the wing wheel and the circular ring sheet rotate respectively, the air flows along the plurality of guide grooves towards the middle part of the wing wheel, and the air is supplemented to the middle part of the wing wheel, so that the circular ring sheet can be in a rotating and suspended state continuously.
[0007] The circular ring sheet can be held by hand before the motor is started, and the circular ring sheet is outside the middle part of the wing wheel, then the motor is started, and the circular ring sheet starts to rotate and suspend; or the circular ring sheet can be held by hand close to the front side of the wing wheel after the motor is started, and the circular ring sheet is released when the air suction force is felt, so that the circular ring sheet is automatically shifted to the outside of the middle part of the wing wheel to rotate and suspend under the action of the air flow. The above operation can be completed by the students themselves, which is convenient for the students to personally experience the Bernoulli principle and is highly inspiring.
[0008] As preferred, the wing wheel is spherical or ellipsoidal, the output end of the motor is connected with the back hemisphere of the wing wheel, the plurality of guide grooves are distributed on the surfaces of the front and back hemispheres of the wing wheel, the guide grooves on the front and back hemispheres of the wing wheel are symmetrically arranged and separated by a circular plate, and the cross-sectional area of each guide groove gradually increases in the direction towards the circular plate. The design of the guide grooves can ensure that the air flow rate of the periphery of the middle part of the wing wheel is maximum and the air pressure is minimum, so that the circular ring sheet can stably rotate and suspend on the periphery of the middle part of the wing wheel.
[0009] As preferred, in the guide grooves on the front hemisphere of the wing wheel, two adjacent guide grooves are separated by a first sector plate; and in the guide grooves on the back hemisphere of the wing wheel, two adjacent guide grooves are separated by a second sector plate.
[0010] As preferred, the rotating speed of the motor is adjustable, so that the state of the circular ring sheet under different rotating speeds can be more directly shown to the students, which is beneficial to stimulate the students' interest in exploring scientific principles.
[0011] As preferred, the wing wheel is made of wood, plastic or metal, and the circular ring sheet is made of paper, plastic sheet or foam. In actual application, the materials of the wing wheel and the circular ring sheet include but are not limited to the above-mentioned materials, and other known materials can also be used, as long as they can be processed into the structure and achieve the corresponding function.
[0012] Compared with the prior art, the teaching toy has the following advantages: the teaching toy based on the Bernoulli principle integrates interest, science, directness and inspiration, can directly show the Bernoulli principle, and the students can also complete the demonstration operation by themselves to personally experience the Bernoulli principle. After the motor is started, the wing wheel is driven to rotate, the surrounding air is driven to flow when the wing wheel rotates, based on the Bernoulli principle, the air flow rate of the periphery of the middle part of the wing wheel is maximum and the air pressure is minimum, so that the flowing air not only can drive the circular ring sheet to rotate around the middle part of the wing wheel, but also can make the circular ring sheet suspend on the outside of the middle part of the wing wheel. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1This is a front view (excluding the annular sheet) of the educational toy based on Bernoulli's principle in the embodiment.
[0014] Figure 2 This is an isometric view of the demonstration state of the educational toy based on Bernoulli's principle after it is powered on, as shown in the example.
[0015] Figure 3 This is a front view of the demonstration state of the educational toy based on Bernoulli's principle after it is powered on, as shown in the example.
[0016] Figure 4 This is an axonometric view of the annular sheet in the embodiment;
[0017] The specific reference numerals in the figure are as follows:
[0018] 1-Handle, 11-Power switch, 2-Motor, 3-Wheelwheel, 31-Guide groove, 32-Circular plate, 33-First sector plate, 34-Second sector plate, 4-Circular thin sheet. Detailed Implementation
[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0020] The example of an educational toy based on Bernoulli's principle, such as Figures 1-3 As shown, the device includes a handle 1, a motor 2, a power supply (not shown), an impeller 3, and a circular thin plate 4. The motor 2 and the power supply are respectively located inside the handle 1. The motor 2 is powered by the power supply and its speed is adjustable. A power switch 11 is installed on the handle 1. The output end of the motor 2 is connected to the impeller 3. The surface of the impeller 3 has 16 guide grooves 31, which lead to the middle of the impeller 3. The inner diameter of the circular thin plate 4 is larger than the outer diameter of the middle of the impeller 3.
[0021] In this embodiment, the impeller 3 is a spherical shape made of plastic, and the annular sheet 4 is made of a plastic sheet, such as... Figure 4 As shown. The output end of the motor 2 is connected to the rear hemisphere of the impeller 3. Sixteen guide grooves 31 are distributed on the surface of the front and rear hemispheres of the impeller 3. Each of the front and rear hemispheres of the impeller 3 has eight guide grooves 31. The guide grooves 31 on the front and rear hemispheres of the impeller 3 are symmetrically arranged and separated by a circular plate 32. In the direction towards the circular plate 32, the cross-sectional area of each guide groove 31 gradually increases. Among the eight guide grooves 31 on the front hemisphere of the impeller 3, two adjacent guide grooves 31 are separated by a first sector plate 33. Among the eight guide grooves 31 on the rear hemisphere of the impeller 3, two adjacent guide grooves 31 are separated by a second sector plate 34.
[0022] The working principle of the teaching toy is as follows: when the power switch 11 is turned on, the motor 2 is started to drive the wing wheel 3 to rotate, and the air around the wing wheel 3 is driven to flow. Based on the Bernoulli principle, the air flow rate of the outer periphery of the middle part of the wing wheel 3 is the largest, and the air pressure is the smallest. From the middle part of the wing wheel 3 to the two ends of the wing wheel 3, the air flow rate gradually decreases and the air pressure gradually increases, thereby forming a flow rate gradient and a pressure gradient. Therefore, the flowing air can not only drive the circular ring sheet 4 to rotate around the middle part of the wing wheel 3, but also make the circular ring sheet 4 suspended outside the middle part of the wing wheel 3, Figure 2 The two arc arrows indicate the rotation direction of the circular ring sheet 4. While the wing wheel 3 and the circular ring sheet 4 rotate respectively, the air flows along the 16 guide grooves 31 towards the middle part of the wing wheel 3, and the air is supplemented to the middle part of the wing wheel 3, so that the circular ring sheet 4 can continuously rotate and suspend.
[0023] The above-mentioned teaching toy integrates interest, science, intuition and inspiration, and can intuitively display the Bernoulli principle. Students can also complete the demonstration operation by themselves, and personally experience the Bernoulli principle.
Claims
1. A teaching toy based on Bernoulli's principle, characterized in that, The utility model relates to a kind of wing wheel air floaters, including handle, motor, power supply, wing wheel and annular sheet, the motor and the power supply are respectively arranged in the handle, the motor is powered by the power supply, power switch is installed on the handle, the output of the motor is connected with the wing wheel, the surface of the wing wheel is provided with several guide grooves, the several guide grooves are respectively connected to the middle part of the wing wheel, the inner diameter of the annular sheet is greater than the outer diameter of the middle part of the wing wheel, the wing wheel is spherical or ellipsoidal, the output of the motor is connected with the back hemisphere of the wing wheel, the several guide grooves are distributed on the surface of the front hemisphere and back hemisphere of the wing wheel, the guide groove on the front hemisphere and back hemisphere of the wing wheel is symmetrically arranged and is separated by circular plate, in the direction towards the circular plate, the cross-sectional area of each guide groove gradually increases, after the motor starts, the wing wheel drives ambient air to flow, the air pressure of the periphery of the middle part of the wing wheel is minimum, the annular sheet is suspended in the outside of the middle part of the wing wheel and rotates around the middle part of the wing wheel.
2. A teaching toy based on Bernoulli's principle according to claim 1, characterized in that, In the guide groove on the front hemisphere of the wing wheel, two adjacent guide grooves are separated by first sector plate;In the guide groove on the back hemisphere of the wing wheel, two adjacent guide grooves are separated by second sector plate.
3. A teaching toy based on Bernoulli's principle according to claim 1, characterized in that, The rotating speed of the motor can be adjusted.
4. A teaching toy based on Bernoulli's principle according to claim 1, characterized in that, The wing wheel is made of wood, plastic or metal, and the annular sheet is made of paper sheet, plastic sheet or foam.