34results about How to "Reduce refrigerant flow" patented technology

The invention discloses a heat exchanger structure. The heat exchanger structure comprises fins and a flat pipe connected with the fins in a locating manner, wherein grooves are concavely formed inwards on two side surfaces of the flat pipe and extend along the length direction of the flat pipe. The invention also discloses an assembly process of the heat exchanger structure, comprising the following steps of: (1) sequentially piling and fixing the fins; (2) embedding a lug boss of a welding material sheet into each groove in a matching manner, and connecting the welding material sheet and the flat pipe in the locating manner; (3) locating the flat pipe connected with the welding material sheet in the locating manner and the fins; and (4) placing the flat pipe and the fins in a brazing furnace to weld. By using the heat exchanger structure and the assembly process thereof, the welding material uniformity is improved, a connecting region is beneficially formed by the welding material around a contact point of the fins and the flat pipe, the welding strength is improved, and because the grooves are arranged in the middle of the flat pipe, the density of microchannels in the center of the flat pipe is reduced, the phenomenon, such as freezing and the like caused by too low temperature in the center is improved, the pipeline groove radius can be correspondingly increased while the welding quality is ensured, and a flanging height is beneficially designed.

An air conditioner, comprising a compressor, an outdoor heat exchanger, an outdoor fan, a heat exchanger in a first room and a heat exchanger in a second room, a dehumidification damper and a room fan, including: the heat exchanger installed in the first room A refrigerant flow path on the upstream side of the air flow, which is used as a refrigerant inlet in the dehumidification and cooling operation of the first room heat exchanger, and subsequently used as a refrigerant outlet in the heating operation, The refrigerant flow is thus formed in one flow system; the other refrigerant flow path provided on the downstream side of the refrigerant in the dehumidification and cooling operation of the heat exchanger in the first room is formed in two or more flow systems Refrigerant flow; and another refrigerant flow passage having two or more flow systems in the second room heat exchanger, the refrigerant flow passage being provided in the refrigerant flow passage having two or more systems The airflow downstream side of the road.

The invention provides an air conditioning unit and a pressure control method thereof. The air conditioning unit comprises an outdoor heat exchanger tube temperature sensing bag, a first electromagnetic valve and a second electromagnetic valve which are electrically connected with a control device. As the control device receives temperature information of the outdoor heat exchanger tube temperature sensing bag and controls on and off of the first electromagnetic valve and the second electromagnetic valve, the control device can automatically conduct flow adjustment according to pressure changes, the pressure of the unit can be kept within an appropriate scope under any environmental condition, and the air conditioning unit runs in the hostile environment; when it is detected that the pressure of the system is too high, the refrigerant flow entering an evaporator is automatically reduced, the evaporating pressure of the system is reduced, the running exhaust pressure of the unit is further reduced, and it is guaranteed that the unit can stably run. The problem that the air conditioning unit cannot run under the hostile working condition when the pressure is too high is solved, and the running reliability and the running comfort of the unit are greatly improved.