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.

The invention relates to the technical field of air conditioners, and discloses an air conditioner control method, device, air conditioner and storage medium. The method includes: when the air conditioner is in a cooling mode, acquiring the current operating frequency of the compressor; When the operating frequency reaches the minimum limit frequency, judge whether the indoor temperature of the indoor environment where the air conditioner is located is lower than the set temperature; when the indoor temperature of the indoor environment where the air conditioner is located is lower than the set temperature, increase the opening degree of the first electronic expansion valve , and reduce the opening of the second electronic expansion valve to reduce the refrigerant pressure between the outdoor heat exchanger and the flash evaporator, and reduce the refrigerant flow at the indoor heat exchanger, thereby making the liquid entering the indoor heat exchanger Refrigerant is reduced, so that the output cooling load of the air conditioner can better match the actual demand, so as to ensure that the compressor of the air conditioner is in a state of non-stop to maintain a stable indoor temperature, and at the same time reduce the risk of liquid backflow, enhance the reliability of the system, and improve the user. purpose of comfort.

The invention provides a parameter control method and control device of an air conditioner and the air conditioner. The control method comprises the steps that when the temperature variable quantity of the real-time environment temperature relative to the preset temperature is smaller than or equal to the preset temperature variable quantity, the current real-time temperature of the current position of a user and the average temperature of the local environment where the current position is located are detected; the average air speed of the local environment is determined according to the current rotating speed of an indoor draught fan of the air conditioner and / or the air supply parameter of an air deflector of the air conditioner; and the equivalent air outlet temperature parameter of the air conditioner is determined according to at least one parameter of the current real-time temperature, the average temperature and the average air speed, and the equivalent air outlet temperature parameter is controlled to be larger than or equal to the first equivalent air outlet temperature parameter and be smaller than or equal to the second equivalent air outlet temperature parameter. By means of the technical scheme, the blowing feeling of the air conditioner can be reduced, an air conditioner room has no blowing feeling, and therefore the use comfort of the air conditioner is improved.

The invention relates to the field of air conditioners and discloses a frequency conversion air conditioner and a condensation-preventing control method for a frequency conversion module radiator of the frequency conversion air conditioner. The frequency conversion air conditioner comprises an intermediate heat exchanger (5). The intermediate heat exchanger (5) comprises a main heat exchange flow path (51) and an auxiliary heat exchange flow path (52). The refrigerating outlet end of the main heat exchange flow path (51) is provided with a first branch flow path (511) connected to the inlet end of the auxiliary heat exchange flow path, and a second branch flow path (512) arranged to be capable of cooling the frequency conversion module radiator (6). The first branch flow way is provided with a branch throttling part (511a). The condensation-preventing control method includes the steps that S1, the temperature Tf of the frequency conversion module radiator and the environment temperature Ti of the environment where the frequency conversion module radiator is located are detected; and S2, when Tf is smaller than Ti, the refrigerant flow flowing through the auxiliary heat exchange flow way is reduced, it is avoided that the refrigerant temperature of a refrigerant flowing through the second branch flow way is reduced to the temperature below the environment air dew point temperature, and therefore condensation water is effectively prevented from being generated on the frequency conversion module radiator.