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Oil return control system of scroll compressor

A scroll compressor and oil return control technology, which is applied in the direction of rotary piston machinery, mechanical equipment, machines/engines, etc., can solve the problems of air conditioning system capacity attenuation and compressor efficiency reduction, and achieve the improvement of air conditioning system capacity and capacity Increased efficiency, reduced harmful overheating effects

Inactive Publication Date: 2016-02-24
江森自控日立万宝压缩机(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in any case, this oil return method will cause the reduction of compressor efficiency and the attenuation of air conditioning system capacity

Method used

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  • Oil return control system of scroll compressor
  • Oil return control system of scroll compressor
  • Oil return control system of scroll compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] refer to figure 1 and figure 2 , a scroll compressor oil return control system, which includes a scroll compressor 1 and an oil separator 6.

[0023] The scroll compressor 1 includes a housing 12 and a scroll compressor assembly installed in the housing 12. The scroll compressor assembly includes a frame 4, a fixed scroll 2, a moving scroll 3, and a crankshaft 5. And the motor, the fixed scroll 2 and the moving scroll 3 are installed on the top of the frame 4, the fixed scroll 2 and the moving scroll 3 are combined to form a scroll compression chamber, the middle part of the frame 4 is provided with a shaft hole, and the crankshaft 5 passes through the shaft hole, the eccentric part 51 on the upper part of the crankshaft 5 is inserted into the eccentric sleeve of the moving scroll 3, the rotor 42 of the motor is installed on the lower part of the crankshaft 5, the stator 41 of the motor is fixedly installed under the frame 4, and the fixed scroll The rotary disk 2 ha...

Embodiment 2

[0028] combined reference image 3 The difference between this embodiment and Embodiment 1 is that the scroll compressor oil return control system also includes an oil return auxiliary device and a solenoid valve 8, and the oil return auxiliary device is composed of an impurity filter 9 and a capillary tube 7 The two ends of the oil return auxiliary device are connected in series on the oil return pipe, that is, the 9 ends of the impurity filter are connected to the oil outlet 60 of the oil separator, and the 7 ends of the capillary are connected to the oil inlet pipe 23 through the oil return pipe. In this embodiment, the electromagnetic The valve 8 is connected in series between the impurity filter 9 and the capillary 7 .

[0029] When the air conditioning system is running, the oil separator 6 separates the refrigerating machine oil contained in the exhaust of the compressor 1, and filters the impurities through the impurity filter 9 (the impurity filter 9 prevents the capi...

Embodiment 3

[0031] refer to Figure 4 The difference between this embodiment and Embodiment 2 is that the oil return control system of the scroll compressor also includes a heat exchanger 91, the heat exchanger 91 has a low-temperature channel and a high-temperature channel, and the high-temperature channel 93 of the heat exchanger 91 is connected in series On the oil return pipe near the oil inlet pipe 23 end of the oil return auxiliary device (it can also be directly connected to the oil separator oil outlet 60 without using the oil return auxiliary device). The return oil temperature is lowered through the heat exchanger 91 to achieve the purpose of cooling the compressor. The heat exchanger 91 may be a plate heat exchanger or a fin heat exchanger or other heat exchangers.

[0032] The low-temperature refrigerating machine oil returns to the scroll compression cavity and the medium temperature and medium pressure in the cavity (T m , P m ) refrigerant mixture, thereby reducing the t...

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PUM

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Abstract

The invention provides an oil return control system of a scroll compressor. The oil return control system comprises the scroll compressor and an oil separator. The scroll compressor comprises a shell and a scroll compressor assembly arranged in the shell. According to the scroll compressor assembly, a fixed scroll disc and a movable scroll disc are combined to form a scroll compression cavity, the fixed scroll disc is provided with a fixed scroll disc air inlet and a fixed scroll disc exhaust port, and the fixed scroll disc air inlet and the fixed scroll disc exhaust port are communicated with the scroll compression cavity; a compressor air inlet pipe is connected to the fixed scroll disc air inlet, and the fixed scroll disc exhaust port enables the scroll compression cavity to be communicated with the internal space of the shell; the fixed scroll disc is further provided with an oil inlet communicated with the scroll compression cavity, and the oil inlet is connected with an oil inlet pipe; the oil separator is provided with an oil separator air inlet, an oil separator exhaust port and an oil separator oil outlet, an end pipe of a compressor exhaust pipe is connected to the oil separator air inlet, and the oil separator oil outlet is communicated with the oil inlet pipe through an oil return pipe. By means of the oil return control system, the operation efficiency and reliability of the compressor can be remarkably improved, and the capacity and energy efficiency of a whole machine of an air conditioner system can be remarkably improved.

Description

technical field [0001] The invention relates to compressor structure and refrigeration technology, in particular to oil return control of compressor and air conditioning system. Background technique [0002] For general air-conditioning systems, in order to ensure that the compressor does not run out of oil and cause failure, or (and) the refrigeration machine oil is brought into the heat exchanger with the refrigerant to cause the heat exchange effect to deteriorate, it is often installed in the system. Splitter. The oil return of the air conditioning system is generally, the compressor exhausts to the oil separator, the oil separator separates the oil from the refrigerant, and returns the separated oil to the suction side (low pressure side) pipeline or gas-liquid separator. For example, in the compressor oil return system proposed by the Chinese patent application No. 201210331060.2, the oil separated by the oil separator is returned to the suction side. Whether it is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/02F04C29/00F04C29/04F04C18/02
Inventor 杨家祥伍圣念陈锦波马家志李杨星董子玄徐东何武鹏
Owner 江森自控日立万宝压缩机(广州)有限公司