The so-called home central air conditioning is defined by Feng, director of the air conditioning business marketing department of Haier Group: "As long as a host drags several air conditioning units at the end, no matter whether the end appears in the form of embedded, suspended ceiling or wall hanging, it can be called home central air conditioning." According to this definition, our common one-tow-two and one-tow-three air conditioners also belong to household central air conditioners. Internationally, domestic central air-conditioning is mainly divided into two schools: water-cooled schools represented by the United States, such as Kelly, York, Trane, McVeil and so on; Freon or lithium bromide schools represented by Japan, such as Hitachi, Daikin and Sanyo. In China, the representatives of these two schools are Tsinghua Tongfang's small central air conditioner and Qingdao Haier's one-to-many air conditioner.
Commercial air conditioner
According to international standards, commercial air conditioners are collectively referred to as air conditioning units above 3HP, so there are many types of products involved in commercial air conditioners.
Modular air conditioning units, in the form of large-capacity ceiling embedded, duct type, cabinet type and so on. , mainly used in large photo studios, as well as small offices, entertainment venues, restaurants and other places.
Multi-connected central air conditioning unit is a direct evaporative air conditioning system, which is a centralized, large-scale and intelligent product of ordinary split air conditioning. An outdoor unit can tow 2- 16 indoor units. Its main characteristics are free combination of indoor and outdoor machines, independent control, flexibility, convenience, energy saving and high efficiency, which have attracted more and more attention from the industry.
Household air-cooled heat pump water heater and chiller, mainly using water as refrigerant, is a miniaturized and flexible air conditioning system for central air conditioning, which can be used in various small businesses and large-area, multi-room high-end houses.
The above three types of units are collectively referred to as household central air conditioners, which can be used in high-grade residential places. It can be said that household central air conditioning (or household central air conditioning) belongs to a kind of commercial air conditioning system.
In addition, air-cooled heat pump central air-conditioning units, water-cooled screw chillers, centrifugal chillers, lithium bromide absorption central air-conditioning units and direct-fired central air-conditioning units all belong to centralized and semi-centralized central air-conditioning, that is, central air-conditioning in the traditional sense, which is mainly used in large-scale commercial occasions.