5results about How to "Improve oil return efficiency" patented technology

This application relates to the field of refrigeration systems, disclosing a refrigeration oil, a working fluid composition for refrigeration machines, and a refrigeration system. By adding a specific type of surfactant, this application significantly reduces the surface tension of the refrigeration oil, improves its compatibility with refrigerants such as hydrofluorocarbons, and reduces oil film formation or oil residue in the refrigeration system. The refrigeration oil described in this application has suitable viscosity and solubility viscosity, meeting the normal operating requirements of the compressor, while also effectively inhibiting the formation of oil film on the heat exchanger surface, thereby improving heat exchange efficiency. Furthermore, this refrigeration oil has good lubricity, low-temperature fluidity, and thermochemical stability, which can promote the circulation of the refrigeration oil in the refrigeration system pipeline, improve oil return efficiency, and extend the compressor's service life.

This invention relates to the field of multi-split air conditioning system technology, specifically to a disturbance control method for the outer loop electronic expansion valve of an air conditioning system. The problem this invention addresses is how to actively eliminate oil and refrigerant blockage and reduce exhaust temperature during defrosting or oil return processes through forced disturbance control of the outer loop electronic expansion valve. To solve this problem, this invention provides a control method comprising: acquiring the operating status parameters of the air conditioning system; determining whether the air conditioning system has triggered a disturbance program based on the status parameters; correcting the reference setting based on the exhaust temperature, compressor return superheat, and oil separator return oil temperature during the execution of the disturbance mode; determining whether to exit the disturbance program based on the exhaust temperature and the execution duration of the disturbance program during defrosting and oil return modes; and automatically exiting the disturbance program when the air conditioning system exits the defrosting or oil return mode.

The application provides a compressor and an air conditioner, the compressor comprising: a shell, an inside of the shell being provided with a positioning structure, the positioning structure dividing the inside of the shell into a first containing cavity and a second containing cavity; a stator core, the stator core being arranged in the first containing cavity, and at least part of the positioning structure being connected with a first end of the stator core; a snap ring assembly, the snap ring assembly being arranged in the first containing cavity, the snap ring assembly comprising a plurality of clamping portions, the snap ring assembly being connected with a second end of the stator core through the clamping portions, and a first backflow channel being formed between adjacent clamping portions and between part of an outer wall of the stator core and part of a surface of the first containing cavity; and a pump body assembly, the pump body assembly being arranged in the second containing cavity, and the first backflow channel being arranged in communication with the second containing cavity. The path of vibration transmission of the stator core to the shell can be blocked, an efficient oil return channel can be constructed to improve the oil return efficiency of the compressor, and the problems of excessive vibration and noise of the motor part of the compressor and low heat dissipation efficiency of the motor can be solved.

The utility model belongs to the technical field of rolling oil filtering, and relates to a rolling oil filtering device which comprises a through hole shaft rotatably mounted on a filter cartridge, an oil inlet pipe communicated with one end of the through hole shaft through a rotary joint, the through hole shaft connected with a first motor through a bevel gear transmission part, and a first filtering system connected with the other end of the through hole shaft. A first filtering system and a second filtering system are sequentially installed in an inner cavity of the filtering cylinder from top to bottom, an oil return pipeline is arranged on the filtering cylinder, the oil inlet end of the oil return pipeline is communicated with the filtering cylinder, and the oil outlet end of the oil return pipeline is located between the first filtering system and the second filtering system. According to the utility model, primary filtration is carried out through the first filtration system, impurities with larger particle sizes are intercepted and then enter the second filtration system to be deeply purified, so that finer impurities are further removed, and the rolling oil is circularly filtered through the oil return pipeline, so that the filtration frequency of the rolling oil is increased, the rolling oil participates in the filtration process again, and the filtration sufficiency is improved; and the filtering quality is further ensured.

The utility model discloses a combined oil return sealing structure which comprises a main shaft, an oil slinger, an end cover and a labyrinth type oil seal. The main shaft is divided into a primary shaft and a secondary shaft from left to right, the radius of the primary shaft is smaller than that of the secondary shaft, the left end of the primary shaft penetrates through the transmission device, and an annular groove is formed in the right end of the primary shaft; the oil slinger is assembled on the primary shaft, the left side of the oil slinger is attached to the right side of the transmission device, and the right side of the oil slinger is attached to the left side face of the secondary shaft. The labyrinth type oil seal is installed on the secondary shaft in a clearance mode, a trapezoid ring groove and an annular boss are arranged on the outer side of the labyrinth type oil seal, the annular boss is in clearance fit with a groove in the corresponding position of the end cover, and a plurality of ring grooves are formed in an inner hole of the labyrinth type oil seal; a plurality of oil holes communicated with the annular groove are further formed in the labyrinth type oil seal, and an axial hole jointly communicated with the oil holes is further formed in the labyrinth type oil seal. According to the utility model, a sealing structure and a lubricating oil backflow path are optimized, the oil return efficiency is improved, and the risks of retention and oil degradation are reduced; meanwhile, the oil leakage risk is effectively reduced.