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Compressor with oil level detection function and automatic oil return and oil replenishing heat pump system

An oil level detection, heat pump system technology, applied in compressors, heat pumps, machines/engines, etc., can solve the problems of not being able to bring lubricating oil back to the compressor, accumulation, compressor oil shortage, etc., and achieve the effect of ensuring long-term stable operation

Pending Publication Date: 2020-09-11
LONGCHUAN NIUENTAI NEW ENERGY TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technology will have the following problems: after long-term operation of the heat pump system, the lubricating oil will adhere to the pipe wall or accumulate in the corners of the components. Simply increasing the flow rate of the refrigerant or using an oil separator cannot bring the lubricating oil back to the compressor well. Long-term operation The compressor is still at risk of oil shortage

Method used

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  • Compressor with oil level detection function and automatic oil return and oil replenishing heat pump system
  • Compressor with oil level detection function and automatic oil return and oil replenishing heat pump system
  • Compressor with oil level detection function and automatic oil return and oil replenishing heat pump system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 As shown, a compressor with an oil level detection function includes a compressor body 1 and an oil pipe 2, the compressor body 1 and the oil pipe 2 are connected, and the compressor body 1 and the oil pipe 2 The inner bearing is equipped with lubricating oil. Based on the principle of the connector, the liquid level of the lubricating oil in the oil pipe 2 is the same as that of the lubricating oil in the compressor body 1. The oil pipe 2 is equipped with a detection minimum safe oil level 3 and the detection reference position 4, the outside of the oil pipe 2, the detection minimum safe oil level 3 and the detection reference position 4 are connected with an oil level detection circuit 5; the lubricating oil in the oil pipe 2 rises to the minimum safe oil level When the oil level is 3 and above, the oil level detection circuit 5 is connected.

[0029] An oil level detection circuit power supply 6 and a time relay 7 are installed in the oil level detectio...

Embodiment 2

[0033] refer to figure 2 , a heat pump system with automatic oil return and oil replenishment, including a compressor 9 with oil level detection function, a four-way valve 10, a water side heat exchanger 11, a throttling device 12, a fin heat exchanger 13, and an air Liquid separator 14; one end of the compressor 9 is connected with the four-way valve 10, the other end is connected with the gas-liquid separator 14, the other end of the gas-liquid separator 14 is connected with the four-way valve 10, the water One end of the side heat exchanger 11 is connected to the four-way valve 10, and the other end is connected to the throttling device 12, and the other end of the throttling device 12 is connected to a fin heat exchanger 13, and the fin heat exchanger 13 is another One end is connected with the four-way valve 10. The gas-liquid separator 14 is connected with an oil return connection pipeline, and the oil return connection pipeline is respectively a first oil return conne...

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Abstract

The invention discloses a compressor with an oil level detection function and an automatic oil return and oil replenishing heat pump system. The compressor comprises a compressor body and an oil liquid pipe, wherein the compressor body communicates with the oil liquid pipe, lubricating oil is loaded in the compressor body and the oil liquid pipe, the oil liquid pipe is provided with a detection lowest safety oil level and a detection reference position, an oil level detection circuit is connected on the outer side of the oil liquid pipe, and between the detection lowest safety oil level and the detection reference position, the oil level detection circuit connects, and the system comprises the above compressor, and further comprises a four-way valve, a water side heat exchanger, a throttling device, a fin heat exchanger and a gas-liquid separator. According to the compressor, an oil level of the compressor is detected in real time through the oil level detection circuit of the compressor, the heat pump system controls a rotation speed of the compressor and opening and closing of an oil return point according to the oil level condition of the compressor, the purpose of oil return and oil supplementing is achieved, sufficient lubricating oil in the compressor is guaranteed, and the long-term stable operation of the system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of air source heat pumps, in particular to a compressor with an oil level detection function and a heat pump system for automatic oil return and oil replenishment. Background technique [0002] The operation of the compressor requires enough lubricating oil to lubricate the components. The existing heat pump systems generally adopt the following technologies in the oil return of the compressor: 1. Increase the operating frequency of the compressor and increase the flow rate of the refrigerant to achieve the purpose of bringing the lubricating oil back to the compressor. Effect; 2. An oil separator is added to the system, and the oil separator separates the refrigerant in the pipeline from the lubricating oil, and sends the lubricating oil back to the compressor. The above technology will have the following problems: after long-term operation of the heat pump system, the lubricating oil will adhere to the pip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00F04B39/02F25B30/02F25B31/00
CPCF04B39/0207F04B51/00F25B30/02F25B31/004Y02B30/70
Inventor 赵密升周超越刘伟飞徐维振
Owner LONGCHUAN NIUENTAI NEW ENERGY TECH DEV