Research on the hottest TRIZ theory in mechanical

Research on TRIZ theory in mechanical innovative design

1 current situation analysis

the amount of wasted energy and carbon emissions in everyone's living habits seems small, but for a populous country, once calculated by a large number of population multipliers, it is a huge amount. For example, the traditional ceiling fans are not in line with the current decoration style, so few people choose to install ceiling fans now, but using ceiling fans alone in mild weather is a cost-effective choice. Using them together with air conditioners in hot weather intensity levels can maximize the effect of indoor cold rooms and achieve the goal of energy conservation. Although ceiling fan lights are currently developed on the market, However, people seldom choose to install ceiling fans because of inconvenient collection and inconsistent decoration style

after market research, it is found that people need to use ceiling fans. Especially in summer, sleeping party hopes that wind energy can blow naturally on people from above rather than on the side

2 product process of developing floor cantilever ceiling fans using TRIZ theory

2.1 general steps of TRIZ systematic problem solving (Figure 1)

Figure 1 general steps of TRIZ systematic problem solving

2.2 functional analysis of problem description

background: traditional ceiling fans are inconsistent with the current decoration style, so few people choose to install ceiling fans in home decoration, but in mild summer, especially when sleeping at night, I hope the wind blows naturally on people from above, which can not only save costs but also have good air mobility

customer needs: the market needs ceiling fans that are safe, practical, beautiful, cheap and convenient to collect

main components and their functions:

blades - accelerate air flow

support - fixed blades, adjusting orientation, wiring, etc

switch - control wind speed, light, etc

available resources:

existing resources: table fans, floor fans, ceiling fans

environment (air, temperature, humidity)

exterior: people, space

interior (space, area, shape, temperature, material)

time: installation of blades, supports, etc

field: electric field, sound field

2.3 TRIZ conflict resolution process (Figure 2)

physical conflict: ceiling fans should be both large and small, with enough space when in use, and the smaller when not in use, the better for collection, which is transformed into technical conflicts (volume, motion, speed and shape) through the separation law

technical contradiction: it refers to that when a part (or a parameter) of the technical system is improved by a known method, the other parts (or other parameters) of the system will deteriorate intolerably. When the installation cantilever of the floor fan destroys its stability due to the outward shift of the center of gravity, the technical characteristics to be improved by the system (fan) here are the volume, length, speed and shape of the moving object

Figure 2 TRIZ conflict resolution process

2.4 TRIZ steps to resolve technical conflicts

Step 1: determine the name of the technical system

system name: floor Gan arm ceiling fan

step 2: problem description

it is necessary to increase the cantilever of the floor ceiling fan, but in this way, the center of gravity of the floor ceiling fan shifts outward, and a slight collision may topple it, which is unsafe to use

step 3: define technical contradictions

improved parameter: "length of moving object" (3)

deteriorated parameters: "weight of moving object" (1), "volume of moving object" (7)

step 4: find the contradiction matrix table

the maximum experimental force used in the test should not exceed the elastic limit of the test specimen. The innovative principles adopted for the technical contradictions are as follows: ① innovative principle 7: nesting; ② According to the innovative principle 29, the low-temperature brittleness, blue brittleness and recrystallization brittleness of materials can be evaluated: gas or hydraulic structure; ③ Innovation principle 34: abandonment and regeneration; ④ Innovation principle 8: anti weight; ⑤ Innovation principle 4: increase asymmetry; ⑥ Innovation principle 17: transition to another dimension; ⑦ Innovation principle 15: dynamic; ⑧ Innovation principle 35: change the properties of objects

step 5: generate ideas

by analyzing patents and examples of applying innovative principles to solve technical contradictions, the following ideas are generated

innovative principle 7 (nesting), change the volume size, such as the telescopic upright part of the support; Innovative principle 4 (increase asymmetry) such as chassis structure

innovative principle 17 (another dimension transition), 34 (abandonment and regeneration), no fan

innovative principle 29 (gas or hydraulic structure) to improve motor power

innovative principle 15 (dynamic): for example, the cantilever can adopt refraction or rotation

using IWB software at the same time can break the limitations of individual knowledge, the limitations of knowledge lifetime and thinking set to a great extent, and wait for many inspirations and relevant practical patents

best solution: floor cantilever fan without fan

3 conclusion

the 17th National Congress of the Communist Party of China put forward the scientific development decision of "energy conservation and emission reduction" and "enhancing the ability of sustainable development". As college teachers, they should seriously study the TRIZ theory and continue to promote it. In the process of using TRIZ theory to develop floor cantilever ceiling fans, the innovative design can be simplified, in order to improve the innovative ability of college students To improve the innovative thinking of college students, it is proposed to provide a way to adopt the technical dimension of dry pulverized coal gasification. (end)