2012 Air-energy heat pump has been widely used in central hot water because of its remarkable energy saving, environmental protection, safety and easy management. It is favored by various units, schools, enterprises, factories, hotels, hotels, hospitals, bathing centers and families. Supply system, and widely acclaimed. And some manufacturers of air-to-heat pump hot water project gradually exposed a lot of problems in the process of using, the problems include the heat pump hot water unit itself quality problems, project installation, use management and other aspects of the problem, resulting in the hot water supply is not normal , Excessive energy consumption, hot water costs and other consequences. Lesson learned, after-hours division, you want to understand and be familiar with the air heat pump to achieve the level of procurement experts is actually very simple, as long as the key to choose a good air to heat pump, everything is solved, the heat pump product is good and bad can not escape your Eye of fire. You can! Air to heat pump water heater is the fourth generation of new hot water equipment, is a highly efficient heat collection and transfer of heat from the compressor, electronic expansion valve, drying filter, four-way valve, evaporator, condensation Devices, fans and other major components used. It successfully used the inverse Carnot principle, by the electric drive compressor in the heat pump inhalation of low temperature and low pressure gas refrigerant from the evaporator, through the work of the refrigerant compressed into high temperature and pressure gas, high temperature and pressure gas into the condenser to exchange heat with water , Is condensed into a cryogenic liquid in the condenser to release a large amount of heat, the water absorbs the heat it releases and the temperature rises. The condensed high-pressure and low-temperature liquid is throttled and decompressed by the expansion valve, and then the heat of the surrounding air is absorbed by the evaporator to evaporate into the low-pressure gas which is then sucked into the compressor to be compressed, so as to obtain 55 ° C. Hot water above. Preparation of hot water stored in the insulation tank for users to use at any time. According to the source of heat is divided into: air source heat pump, ground source heat pump, water source heat pump 2, according to the way the work is divided into: circulating heat pump, direct heat pump 3, according to the temperature of the water is divided into: ordinary Heat pump, high temperature heat pump 4, according to different purposes are divided into: swimming pool heat pump, breeding heat pump, industrial heat pump, shower heat pump life 5, according to different derived functions are divided into: air conditioning hot water unit, hot and cold Units, floor heating hot water unit, triple for generating units; continuous development of the industry there will be more classification, here no longer enumerated. Select the key point of heat pump unit: Air source heat pump as a new type of energy saving products in our country only ten years of development, but in recent years in the market there have been a large number of different brands of air source heat pump products, workshop-style production, Good and bad quality, low-quality products flooding the market has brought immeasurable loss to consumers, then how to identify the selection of good air-source heat pump products? 1, production license: Because the air-source heat pump is a technical requirements of the professional products , You want to choose the product first see whether it is the State Administration of Quality Supervision, Inspection and Quarantine issued by the national industrial production permit (according to the certificate provided by the manufacturer to check the authenticity of the Internet to prevent counterfeiting, the following types of certificates the same), no Enterprises can be regarded as illegal production of the product, the product has not been tested by the state authorities, quality and performance is difficult to be guaranteed, at the same time, manufacturers, distributors and consumers have to bear the relevant responsibilities as a distributor, consumers should be cautious Careful; take it as the first key point mainly based on the following two points: A, put the law Risk from zero to 100%, do not purchase a legal risk; B, can eliminate more than 95% of the heat pump products, just choose what you want to effectively reduce the risk and workload, improve accuracy from 5%. 2, Trademark Registration Certificate: According to the relevant commodity circulation regulations, heat pump as a commodity, the brand must be registered trademark of the Trademark Office to sell, to prevent some "three noes" manufacturers trouble; can be eliminated more than 20% of the unqualified Heat pump products to improve the reliability of the selection. 3, the performance test report: After testing the authority of the State Department, the performance of the products meet the relevant standards is qualified, the higher the COP value detected to prove the use of more power, good air-source heat pump than the average more than 10% , So sometimes can not be cheap at the time of purchase, a small loss, a good product will let you save more. 4, 3C certification: Heat pump hot water unit is a national compulsory certification products, must pass the China Quality Certification Center of testing, and obtained by the China National Compulsory Certification (CCC certification) before sale. 5, the company business license and tax registration certificate: must be a legitimate business of professional firms to prevent risks. 6, the unit structure and weight: the product weight difference caused by the three main areas: evaporator, condensing heat exchanger and shell; the same structure of the unit, the lighter unit has the suspense of cutting corners, material thin or short, the performance It is difficult to be guaranteed. 7, the type of compressor: Compressor is compared to the heart of the heat pump unit, its performance is very good or bad; currently commercial heat pump unit accepted the United States Copeland compressor optimal, of course, to ensure that the original factory, to prevent Some manufacturers shoddy, with the repair of the compressor. 8, electronic control technology: If the compressor is the heart of the heat pump, then the electronic control is the brain of the heat pump, an excellent electronic control board can effectively solve the complex problems of heat pump units, installation is more simple, more flexible control and reduce heat pump Glitches in the operation of the unit, the stability is guaranteed. 9, throttling technology: throttling technology is to optimize the performance of a heat pump unit a key, there are capillary throttling, thermal expansion valve throttling and electronic throttling throttling three digital expansion valve technology to electronic expansion valve throttling For the most advanced and effective solution to heat pump frost in winter problems, access to higher energy efficiency, more stable and reliable performance. 10, the shell of the process: neat appearance, sheet metal production well, the structure is solid and reliable is a good product standards, a product's shell technology level will reflect the positioning of their products and manufacturing concepts, the shell usually poor material, not beautiful , Not willing to spend the cost of the enterprise in the other components of the input will not be large, largely unwieldy. 11, production equipment: Only good production equipment to make a good heat pump products, at least have a professional performance testing room and test workshop, a product that has not passed the test on the factory you dare? 12, System Matching Level: Whether a heat pump product can run stably under different air temperature and water temperature, the matching level of the system is very critical, just like the car chassis control technology. High level of heat pump products not only to deal with the high temperature caused by high pressure but also to solve the problem of low temperature frost, low unit failure rate, easier maintenance! This and a business technology has a great relationship. 13, the level of project installation: a good product also needs a good installation, find a professional, experienced installation team is the key to the success of a heat pump hot water project, because a good heat pump products installed in a confused project abound Yes, energy-saving projects have become energy-consuming projects, showing the importance of installation. 14, after-sales service: any product has the possibility of failure, timely and capable after-sales service is essential; the first to be timely, the second should have the ability (bad can repair, will repair, some manufacturers even own The product will not repair the broken, so troublesome), the third according to the provisions of the state warranty. Just grasp the key points above, you will be able to pick out a reliable manufacturer of air-to-water heat pump water heater, but also to provide consumers with a safe, reliable, easy to use, energy saving and environmental protection heat pump hot water.