燃气热水器设计.doc

燃气热水器设计

<一>  热水器 9
第一章. 改装的目的及意义 9
第一节. 改装的目的及意义 9
第二节. 热水器质量评测的几个指标： 10
第三节. 燃气热水器 11
第四节. 电加热热水器： 12
第二章. 燃气热水器工作原理 13
第三章. 旧型直排式热水器 13
第一节. 对旧型直排式热水器改装的技术分析 13
第二节. 传统平衡式热水器本体密封性结构存在的问题 14
第三节. 理论分析 15
第四节. 实验分析 15
第四章．改装设计（强排平衡式燃气热水器） 20
第一节. 密封燃烧室新设计 20
第五章．阀体 22
第一节. 传统单向阀 22
第二节. 单向复合阀 24
第六章. 容积式电热水器 26
第一节. 箱体系统 27
第二节. 控制系统的分类和比较 30
第三节. 电热水器的工作原理 35
第七章．改装后热水器的安全性和五大性能 36
第一节. 安全性 36
第二节. 五大节能技术 37
第八章. 总结 37

论文摘要一
    燃气热水器最初起源于日本，它是指利用民用燃气燃料供给热水的设备。在国内,燃气热水器也以其即洗即用、方便快捷的优点成为广大居民解决洗浴和用热水的好产品。 最初流行的是直排式燃气热水器，但使用该热水器造成的中毒、缺氧窒息死亡事件此起彼伏。原因在于热水器安装于室内，室内燃烧将造成室内空气严重污染和极度缺氧等现象，最终导致伤亡事件的发生。为了减小伤亡，保证安全，生产厂家在直排式燃气热水器的基础上增加了烟道，推出了烟道式燃气热水器，并同时增设了一系列的安全保证措施。如：特设20分钟定时关机装置、防干烧保护装置、防止不完全燃烧熄火保护装置等。继烟道式燃气热水器之后，生产厂家又推出了强排式燃气热水器。所谓强排式热水器，就是在烟道式燃气热水器内增加了强制通风的风机和电机。.
   虽然以前的燃气热水器给广大用户带来不少方便，但由于在技
术上还没有完全成熟，其中也有很多不利的因素，因此还需要改进。通过国家有关政策的宏观调控，在行业内强制性淘汰了一些不利因素或推行新政，有利于燃气热水器行业的快速良性发展和产业集中化，如1999年强制性将直排燃气热水器淘汰出局，使产业得到快速升级。目前，深圳、上海等一些大城市已开始禁止烟道式燃气热水器的生产与销售，燃气热水器的发展又将面临新的机遇与挑战。目前使用的大部分燃气热水器采用的是由手动燃气阀门和进水阀门来控制燃气热水器的出水温度。当冷水入口温度、水流量等因素发生变化时，出水温度也将发生变化，洗浴时水温忽冷忽热，不舒适甚至造成对人体的伤害；而部分采用电脑常规控制方式的燃气热水器，当冷水入口温度、水流量等因素发生变化时，由于对水温采用以输出偏差为基础的反馈控制方式，控制系统对变化的跟踪性能差，不易得到良好的控制性能。随着科学技术的发展，特别是随着消费者对价格的敏感度的降低，热水器的技术要求也越来越高，安全、舒适成为首选。因此，加强产品研发投入、增强产品科技含量已成为行业共识。而人采用直观判断来进行控制阀的操作，往往能得到良好的水温控制效果，因此，很自然地想到运用智能控制，把人的直观推断知识反映到控制过程上来，以实现性能优良的控制。 人工智能的出现弥补了传统燃气热水器技术上的不足.燃气热水器当年之所以能够独步江湖的“秘笈”，便是即开即洗，无需等待的方便、快捷等优点。虽然目前被电热水器夺去盟主地位，但技术的升级、安全性能的提高、产品的创新以及多年的消费惯性为燃气热水器的主流回归奠定了基础。
•关键词：燃气热水器  直排式热水器 强排式热水器 

Abstract  One
The fuel gas Water Heater origins from Japan, is the use civil fuel gas fuel supplies hot water equipment. In domestic, the fuel gas Water Heater also by it’s namely washes namely with, the convenience quick merit becomes the general inhabitants to solve takes a bath, to use the hot water the good product.
     At first the popular is the straight platoon type fuel gas Water Heater. In this period of time, because uses the Water Heater to create is poisoned, the oxygen deficit suffocates the death event continuously. The reason is in the Water Heater room installs, the room burning has created in the room the air serious pollution and the extreme oxygen deficit finally causes the casualties’ event the occurrence. In order to reduce the casualties, guarantees the security, produced the factory to increase the smoke in the straight platoon type fuel gas Water Heater foundation to say, has promoted the smoke type fuel gas Water Heater, and simultaneously additionally built a series of safe guarantees measure， for example: Ad hoc 20 minute fixed time close installs, guards against burning the protective device, and prevents the incomplete combustion flameout protective device and so on. After continues the smoke type fuel gas Water Heater, produced the factory to promote the strong platoon type fuel gas Water Heater. The so-called strong platoon type Water Heater, was increased the forced draft air blower and the electrical machinery in the smoke type fuel gas Water Heater.
     Although the before fuel gas Water Heater brought many for the user communities convenient, but because has not been mature in the technology, also had very many disadvantageous factors, therefore also needed to improve. Through the national related policy macroeconomic regulation and control, compulsory elimination some disadvantage factors or carries out the new deal in the profession, is advantageous to the fuel gas Water Heater profession fast benign development and the industrial centralization, if in 1999 compulsory leaves office the straight platoon fuel gas Water Heater elimination, enable the industry to obtain the fast promotion. At present, Shenzhen 、Shanghai and so on some cities started to forbid the smoke type fuel gas Water Heater the production and the sale, the fuel gas Water Heater development face the new opportunity and the challenge. At present uses the majority of fuel gases Water Heater uses the manual fuel gas valve and the inlet valve gate controls the fuel gas Water Heater the water leakage temperature, when the cold water inlet temperature, factor and so on water current capacity changes, the water leakage temperature also changes, takes a bath when the water temperature is now hot and now cold, not comfortable even creates to the human body injury; But partially uses the computer convention control mode the fuel gas Water Heater, when the cold water inlet temperature, factor and so on water quantity of heat changes, because uses to the water temperature take outputs the deviation as the foundation reaction control way, the control system to the change track energy balance, is not easy to obtain the good control performance. Along with science and technology development, especially along with consumer to price sensitivity reducing, Water Heater specification more and more high, is safe, comfortably becomes the first choice. Therefore, strengthens the product research and development investment, the enhancement product technology content has become the  profession mutual recognition. But the person uses direct-viewing judges carries on the control valve the operation, often can obtain the good water temperature control effect, therefore, very natural thought the utilization intelligence control, person's direct-viewing inference knowledge reflected comes up to the controlled process, realizes the performance fine control.
     The artificial intelligence appearance has made up in the traditional fuel gas Water Heater technology insufficiency The fuel gas Water Heater same year therefore could alone the rivers and lakes "the secrets", then be namely opens namely washes, does not need conveniently, quickly to wait for and so on the merit. Although at present is taken away by the electric boiler the hegemony status, but the technical promotion, the security performance enhancement, the product innovation as well as many years expense inertia have laid the foundation for the fuel gas Water Heater mainstream return. At the same time, the transport the natural gas from the west to the east project is advancing step by step, for fuel gas Water Heater profession solution energy bottleneck question; Haired, is beautiful and so on the brand involvement fuel gas Water Heater market, indicated the fuel gas Water Heater has favored again by the profession. Certainly, the gas, the electricity, the light tripod vertical aspect also will continue very long period of time, the fuel gas hot water thinks highly of the palm rivers and lakes also to have section of very long road will going.
Key word: The fuel gas Water Heater
The straight platoon type Water Heater
The  strong platoon type Water Heater