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Rotary compressor and refrigeration device having the same

A technology of rotating compressors and rotors, which is applied to components of pumping devices for elastic fluids, rotary piston type/swing piston type pump components, mechanical equipment, etc., to increase pump oil volume and pump lift, and prevent sudden Effect of oil discharge and prevention of rotor overheating

Active Publication Date: 2019-04-05
GUANGDONG MEIZHI COMPRESSOR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as before, the oil escapes to the upper chamber of the motor where the exhaust pipe is opened, which becomes the cause of an increase in the amount of oil discharged.

Method used

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  • Rotary compressor and refrigeration device having the same
  • Rotary compressor and refrigeration device having the same
  • Rotary compressor and refrigeration device having the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] figure 1 and figure 2 Among them, an electric motor 6 (hereinafter referred to as motor 6 ) and a compression mechanism part 5 driven by the motor 6 are fixed on the inner peripheral wall of the sealed casing 2 (hereinafter referred to as casing 2 ) of the rotary compressor.

[0047] Lubricating oil 26 (hereinafter referred to as oil 26 or oil) is stored in an oil storage tank 28 disposed at the bottom of the housing 2 .

[0048] The compression mechanism part 5 includes: a main bearing 10 fixed to the inner peripheral wall of the housing 2, a cylinder 40, an auxiliary bearing 15, a crankshaft 30 slidingly engaged with the above two bearings, a piston 16 driven by the crankshaft 30 to rotate eccentrically, and a reciprocating cylinder. slide 18. An exhaust muffler 11 housing a valve device 12 is disposed on the main bearing 10 .

[0049] The crankshaft 30 is fixed by the rotor 8, and the crankshaft 30 includes: a main shaft 31 slidingly fitted with the main bearing ...

Embodiment 2

[0069] image 3 and Figure 4 In the shown embodiment 2, compared with the embodiment 1, in order to increase the pressure drop of the pump chamber, a rotating chamber 20 is added at the outlet of the rotor air hole 8a. On the outer peripheral wall of the rotary chamber 20, a plurality of cylindrical rotary windows 20a are arranged.

[0070] The rotation chamber 20 fixed to the lower end of the rotor 8 by the rotor rivet 8 b is located on the outer periphery of the main bearing 10 near the bearing upper end. This rotation gap (C) is designed to be 0.2mm or less in order to prevent gas leakage. In Embodiment 2, the rotation diameter of the rotation window 20 is larger than the rotation diameter of the rotor air hole 8a. By processing the diameter and shape of the rotation window 20, the pressure drop of the pump chamber 35 can be increased compared with the embodiment 1.

[0071] Under the condition that the oil level of the oil storage tank 28 is stable from the lower end (...

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Abstract

The invention discloses a rotary compressor and a refrigeration device having the same. An electric motor composed of a stator and a rotor, a compression mechanism driven by the rotor, and an oil storage tank are housed in a sealed housing equipped with an exhaust pipe of the rotary compressor. The rotor has a rotor air hole penetrating it; the compression mechanism includes a crankshaft, and the crankshaft It has a shaft core channel running through it, and the shaft core channel has a core on the crankshaft. The shaft end inlet and the shaft end outlet are open at both ends; the rotary compressor also includes a rotor cover fixed on the rotor. The shaft end outlet and the entrance to the rotor air hole are located in the rotor cover, and the lubricating oil is opened at the shaft end of the oil storage tank. The direction of flow is the inlet, shaft core channel, shaft end outlet, rotor cover, and outlet of the rotor air hole. The rotary compressor according to the embodiment of the present invention can prevent sudden oil discharge under high-flow operating conditions, increase the pump oil volume and pump lift of the shaft core channel, prevent the rotor from overheating, and improve the oil discharge volume.

Description

technical field [0001] The invention relates to the refrigeration field, in particular to a rotary compressor and a refrigeration device having the same. Background technique [0002] In the more than 70 years of rotary compressor history, the method of oil supply to the crankshaft has basically remained unchanged. Through the centrifugal force generated by the rotation of the crankshaft shaft core hole, the oil sucked up from the oil storage tank is supplied to the crankshaft, the bearings and pistons that slide with it and other sliding parts. In addition, the amount of pump oil produced by the centrifugal oil supply method is proportional to the inner diameter of the pump chamber of the crankshaft, the rotation speed, and the oil level of the oil storage tank. [0003] Therefore, when the crankshaft rotates at a low speed of 20rps or less, when starting, defrosting operation, or high-speed operation (these are called high-flow operating conditions), the oil volume and oi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C29/02F04C29/12
CPCF04C29/02F04C29/12
Inventor 小津政雄李盖敏王玲
Owner GUANGDONG MEIZHI COMPRESSOR
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