There are four types of gas water heaters: flue type, forced exhaust type, constant temperature type and condensing type.
Flue type: large smoke outlet, thick smoke pipe, poor anti-suck ability. Outdoor airflow is easy to blow into the water heater through the thick smoke pipe, causing accidental flameout or downdraft damage to the water heater, so it cannot be installed on high floors (only below seven floors). Because it is an open combustion chamber, the combustion efficiency is not high, and the energy efficiency level is 3. However, it is now in the elimination period. Can be ignored.
Forced exhaust type: It adds a forced exhaust fan on the basis of the hood to suck the air outside the water heater into the combustion chamber to help combustion (high combustion efficiency). The energy efficiency level is Grade 2), and at the same time, the burnt waste gas is forced to be discharged outside. Because of the high wind pressure of the water heater, the smoke outlet is thin. The outdoor terminal is connected with a special windproof smoke pipe, so it can be installed in a high elevator apartment.
Constant temperature type: two main components are added on the basis of forced exhaust machine. Microcomputer display controller and gas proportional valve. When the water pressure. Air pressure When the outside temperature changes, the microcomputer controls the gas proportional valve to automatically adjust the size of the gas to keep the water temperature constant (the constant temperature speed depends on the accuracy of the gas proportional valve). Reaction time: 5-25 seconds) If the water in 10L constant temperature water heater is reduced by half, the capacity of 10L will become about 5 liters, and the temperature will be constant. This shows that the constant temperature effect of the water heater is better. Wash your hands as usual. Dishes don't need the maximum amount of water to wash, just a small amount of water. The thermostat with low water pressure can be started normally, and the water temperature is the same, saving water and gas to some extent. This is impossible for smoke machines and forced exhaust machines. It is precisely because the temperature can be set by itself, the temperature is constant and the water pressure is low. Thermostat is an upgraded version of forced draft machine, and now it is the mainstream model.
Condensing type: The function of condenser is high efficiency and energy saving (national energy efficiency 1). Condenser adds a condensing heat exchanger on the basis of thermostat. Its function is to recover the high-temperature waste gas that should have been discharged from the machine to the condensing heat exchanger to absorb heat again, and at the same time separate the condensed water from the high-temperature waste gas to protect the water heater from corrosion and prolong the service life of the water heater.
What kind of gas water heater is better? We recommend 1 and a.o. Smith gas water heaters.
A.O. Smith gas water heater is a famous American brand. A.O. Smith Company has been producing gas water heaters for more than 70 years since 1936. At present, A.O. Smith gas water heater products have several series 15 machines, such as carbon monoxide safety protection type, constant temperature type and 28L large elevation angle type. A.O. Smith gas water heater has won many national patents such as "patented carbon monoxide safety protection system" and "condensation energy-saving system". In 20 10, A.O. Smith gas products appeared at the Shanghai World Expo, providing hot water and heating services for many venues such as the USA Pavilion.
What kind of gas water heater is good? Recommendation 2. Forest gas water heater.
Linnei gas water heater is a Japanese brand, and there are Shanghai Linnei Co., Ltd. in China and Shanghai. Shanghai Linnei Co., Ltd. was established in September, 1993. It is jointly established by Shanghai Gas (Group) Co., Ltd., Japan Linnei Co., Ltd. and Japan Kei Acid Co., Ltd., with a total investment of150,000 USD and a registered capital of 9.7 million USD. The company focuses on the production of high-performance gas water heaters, gas cookers, heating stoves and range hoods, adhering to the technical background of Japanese Linnei Group for more than 90 years, relying on advanced equipment, technology and research and development capabilities, and always adhering to the concept of "dedication to customers with quality and sincerity", it is gradually developing into a pioneer in China gas appliance industry. In 2007, the range hood won the title of best-selling brand in Shanghai market.
What kind of gas water heater is good? 3. Recommend Wanhe gas water heater.
Guangdong wanhexin electric co., ltd. brand .. Guangdong wanhexin electric co., ltd. was established in August, 1993. Headquartered in Shunde National High-tech Development Zone, Guangdong Province, it is the largest gas appliance professional manufacturing enterprise in China, the initiator and promoter of China gas appliance development strategy, and the third chairman unit of China Hardware Association gas appliance Branch.
What kind of gas water heater is good? 4. Recommend beautiful gas water heaters.
Midea gas water heater is produced by Midea Sanitary Ware Company. Midea gas water heater has 4 categories and 26 series 100 products, covering products with retail price of 6,000 yuan from low-end market to high-end market in 300 yuan.
What kind of gas water heater is good? Recommendation 5. Wan Jiale gas water heater.
The maker of the international standard for gas water heaters in Wan Jiale is the main drafting unit of the national standard for domestic gas water heaters and the participating drafting unit of the national standard for domestic gas cookers. At the same time, it also took the lead in compiling the industry standard of condensing household gas-fired rapid water heaters and participated in the formulation of 43 national, industry and local standards. Among them, there are 22 national standards, 22 industrial standards 10, and 22 local standards 1 1, which has promoted the overall upgrading of national standards and the industrialization and standardization process in gas appliance, China, and is the cradle of engineers in gas appliance, China.
What kind of gas water heater is good? 6. Recommend Haier gas water heater.
Haier Gas Water Heater Co., Ltd. is one of the fastest-growing large-scale backbone enterprises specializing in the production of water heaters in Haier Group. The company has one production base in Haier Industrial Park in Qingdao Economic and Technological Development Zone and one in Wuhan Haier Industrial Park, with an annual production capacity of 5 million units, making it the largest water heater production base in Asia.
What kind of gas water heater is good, recommended 7, Huowang kitchen appliances.
Huowang Kitchen Appliances Co., Ltd. was established in 1992. It is the earliest comprehensive kitchen and bathroom appliance manufacturer with completely independent R&D, production, sales and service capabilities in China, and one of the few domestic first-line high-end kitchen and bathroom appliance suppliers that export kitchen and bathroom appliances with completely independent intellectual property rights and brands.