Air conditioner and its rotary compressor

Abstract

The invention discloses an air conditioner and a rotary compressor thereof. The rotary compressor includes a motor and a pump body. The crankshaft is located inside the rotor of the motor and is fixedly connected to it. An oil passage is opened inside the crankshaft, and the oil inlet of the oil passage is located on the crankshaft. The oil outlet of the upper end is located below the oil inlet, and also includes: a gear pump with an inner rotor and an outer rotor arranged on the upper side of the motor, the inner rotor is fixedly connected to the upper end of the crankshaft, and the outer rotor is sleeved outside the inner rotor , the oil discharge chamber of the gear pump communicates with the oil inlet of the oil channel; the top seat fixed on the upper side of the motor, the lower end of the top seat is provided with an accommodation groove and the gear pump is located in the accommodation groove, and the upper end of the top seat is provided with an oil inlet port , the oil inlet of the top seat communicates with the oil suction chamber of the gear pump; the partition plate fixedly connected with the lower end of the top seat, the partition plate blocks the notch of the accommodation groove, and the crankshaft passes through the partition plate and is fixedly connected with the inner rotor. The rotary compressor can effectively solve the problem that the oil return volume of the rotary compressor is small.

Description

technical field [0001] The invention relates to the technical field of air conditioner manufacturing, and more specifically, relates to an air conditioner and a rotary compressor thereof. Background technique [0002] The rotary compressor directly drives the rotary piston to rotate to complete the compression of the gaseous refrigerant, which is more suitable for small air conditioners, especially for household air conditioners. The rotary compressor includes a motor and a pump body. The motor is located on the upper side of the pump body. The crankshaft of the pump body is in interference fit with its rotor. The crankshaft drives other parts of the pump body to rotate to achieve gas compression. [0003] In order to reduce friction, it is necessary to add refrigerated oil to the rotary compressor, and the refrigerated oil is mainly concentrated at the bottom of the rotary compressor. When the rotary compressor is running, the refrigerated oil is supplied to the matching p...

AI Technical Summary

Problems solved by technology

Due to the small area of ​​the oil return channel of the rotary compressor in the prior art and the high air pressure in the space below the motor when it works at high frequency, the amount of refrigerated oil accumulated in the space above the motor returns to the pump body is small, that is, the return The amount of oil is less, and the amount of refrigerated oil discharged from the rotary compressor to the refrigeration cycle system is relatively large, so the amount of refrigerated oil returned to the pump body is less, which increases the friction of the components of the compressor and causes more serious wear, which is easy to cause If the rotary compressor is damaged, if the oil volume of the air conditioning system is large, that is, the oil discharge volume of the compressor is large, the performance of the heat exchanger of the refrigeration system will be low, and the performance of the air conditioner will be reduced.

Images