Product Design And Reliability Analysis Of Home Wall Mounted Gas Center Water Heater Controller

Home wall mounted gas center water heater is a household-based small heat supply equipment that derives from Europe. Its energy comes from the burning of gas fuel, such as natural gas, liquefied petroleum gas and city gas. It can supply domestic hot water and circulation hot water for heat supply for a family. It has advantages of small volume, lightweight, easy to install, expediency to use and no occupation. Room temperature can be adjusted in accordance with user's need freely, and people only need to pay his share. This can meet people's need much more. In these years, many water heater manufacturers of our country begin to introduce foreign technology and launch their products. Energy policy, environment development and market require of our country are beneficial to household-based gas heat supply system, that give home wall mounted gas center water heater a chance to develop.A home wall mounted gas center water heater controller product based on AVR microprocessor ATMega16L is designed. Information technology and traditional appliance control technology are adopted in the controller that embodies the feature of information appliance and realized home intelligence and automation. The cycle of product development is shorten owing to adopting integrated development environment based on high level language. Many novel ideas promote produce's image. The quality is updated and cost is lowered because of using electronic components with high reliability and low cost. Product's reliability and safety are enhanced by adopting reliability design methods such as hardware interlock, charge couple and error warning etc., during the phases of design, model, middle experimental production and mass production. Human Simulating Intelligent Control (HSIC) algorithm is adopted to control water temperature. Control parameters for domestic hot water and circulation hot water are modified through experiments and effect is nice. The controller can save energy and protect environment because it can control temperature and select economical mode or comfortable mode for heat supply.Reliable performances and short cycle of development prove the design is scientific and effective.