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Low-temperature continuous heating oil return system, oil return control method and air conditioning equipment

An oil return system and low-temperature technology, which is applied in lighting and heating equipment, mechanical equipment, refrigerators, etc., can solve the problem of refrigerated oil accumulated in electric heating components, achieve stable indoor environment temperature, increase low-temperature heating capacity, and ensure reliable operation sexual effect

Pending Publication Date: 2020-05-05
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a low-temperature continuous heating oil return system, oil return control method and air-conditioning equipment to solve the problem in the prior art that the low-temperature continuous heating of the unit causes the electric heating components to accumulate refrigerated oil

Method used

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  • Low-temperature continuous heating oil return system, oil return control method and air conditioning equipment
  • Low-temperature continuous heating oil return system, oil return control method and air conditioning equipment
  • Low-temperature continuous heating oil return system, oil return control method and air conditioning equipment

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Embodiment 1

[0031] figure 1 It is a structural schematic diagram of a low-temperature continuous heating oil return system according to an embodiment of the present invention, such as figure 1 As shown, the system includes an indoor unit and an outdoor unit. The outdoor unit includes an outdoor heat exchanger 4, a compressor 1, an auxiliary throttling component 11, an electric heating component 6, etc. The above system also includes:

[0032] An oil return pipeline is arranged between the suction port of the compressor 1 and the electric heating component 6, so that the lubricating oil in the electric heating component 6 flows back to the suction port of the compressor 1 through the oil return pipeline;

[0033] The oil return capillary 7 and the oil return solenoid valve 8 are arranged on the oil return pipeline, one end of the oil return capillary 7 is connected to the bottom of the electric heating component 6, the other end is connected to one end of the oil return solenoid valve 8, a...

Embodiment 2

[0050] image 3 It is a flow chart of the oil return control method for low-temperature continuous heating according to an embodiment of the present invention. This method is applied to the oil return system for low-temperature continuous heating introduced in the above embodiments, such as image 3 As shown, the method includes the following steps:

[0051] Step S301, monitoring the running state of the unit, and obtaining the cumulative working hours of the electric heating components;

[0052] Step S302, judging whether the unit meets the electric heating oil discharge condition according to the running state and the accumulated working hours;

[0053] Step S303, if the oil discharge condition of the electric heating is met, the oil return solenoid valve is controlled to open to perform the oil discharge operation, so that the lubricating oil in the electric heating component flows back to the suction port of the compressor through the oil return pipeline.

[0054] The ab...

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Abstract

The invention discloses a low-temperature continuous heating oil return system, an oil return control method and air conditioning equipment. The system comprises an oil return pipeline, an oil returncapillary and an oil return electromagnetic valve, wherein the oil return pipeline is arranged between an air suction port of a compressor and an electric heating component; the oil return capillary and the oil return electromagnetic valve are arranged on the oil return pipeline, one end of the oil return capillary is connected with the bottom of the electric heating component, and the other end of the oil return capillary is connected with one end of the oil return electromagnetic valve; and the other end of the oil return electromagnetic valve is connected with the air suction port of the compressor. According to the low-temperature continuous heating oil return system, the oil return control method and the air conditioning equipment, the oil return pipeline is arranged between the air suction port of the compressor of the air conditioning equipment and the electric heating component, and the oil return capillary and the oil return electromagnetic valve are also arranged, so that lubricating oil in the electric heating component flows back to the air suction port of the compressor through the oil return pipeline. Therefore, the problem of oil storage in the electric heating component is solved, the operation reliability of a unit is ensured, the low-temperature heating capacity of the unit is improved, continuous heating in a low-temperature environment is realized, the indoor environment temperature is more stable, and the use comfort of users is ensured.

Description

technical field [0001] The invention relates to the field of unit technology, in particular to an oil return system for low-temperature continuous heating, an oil return control method, and air-conditioning equipment. Background technique [0002] When the air source heat pump is in heating operation, the outdoor heat exchanger acts as an evaporator, and its temperature is low. When the temperature is below zero and the outdoor environment has a certain humidity, frosting may occur on the outdoor heat exchanger. [0003] Frosting of the outdoor heat exchanger will lead to poor heat transfer performance of the heat exchanger, blockage of air circulation, and poor heating capacity of the unit. complaint. [0004] Therefore, when the unit is in heating operation, it will judge according to the operating status of the unit and defrost the unit in due course to ensure the heating effect of the unit. When the existing air conditioning unit is in defrosting operation, it is gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F25B49/02F25B43/00F25B31/00F25B41/00F24F11/42F25B41/40
CPCF25B47/022F25B49/02F25B43/00F25B31/00F25B41/00F24F11/42
Inventor 朱世强李立民张仕强金孟孟
Owner GREE ELECTRIC APPLIANCES INC
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