Oil eliminator auxiliary device of air conditioning system and control method thereof

An oil separator and auxiliary device technology, which is applied to the components of pumping devices for elastic fluids, machines/engines, liquid variable capacity machines, etc. Foreign matter clogging and other problems, to increase the cooling and heating capacity, improve the effect of EER/COP

Inactive Publication Date: 2008-05-07
HAIER GRP CORP +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The air conditioning system that uses an oil separator plus an oil return capillary returns the lubricating oil separated by the oil separator back to the compressor through the oil return capillary. If a little water or foreign matter enters the unit during installation and maintenance, the oil return capillary will be easily contaminated by foreign matter. Blockage or ice blockage occurs, at this time the compressor lubricating oil cannot return to the compressor normally, and the compressor will be damaged due to lack of oil operation after a long time

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  • Oil eliminator auxiliary device of air conditioning system and control method thereof

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Embodiment Construction

[0036] The present invention is described in detail below in conjunction with accompanying drawing, figure 1 It is a schematic diagram of the oil separator auxiliary device of the present invention. As shown in the figure, a solenoid valve is connected in series with a branch pipe 16 between the oil outlet of the oil separator 13 on the exhaust side of the compressor 11 and the suction pipe of the compressor 11. Valve 14, the solenoid valve 14 has the characteristics of the unloading valve in the air conditioning system, so after using this device, the unloading valve in the system can be combined with the solenoid valve 14 in the device, and it is controlled by the program to realize unloading or return. The function of the oil; the oil return capillary in the device passes through the branch pipe 16 and is connected in parallel with the solenoid valve on the same circuit.

[0037] The air-conditioning system oil separator auxiliary device and the oil return control method of...

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Abstract

The invention relates to an auxiliary device of an oil separator in an air-conditioning system and a control method for the auxiliary device, which comprises a compressor, an oil separator and a return capillary. A pipe branch is in parallel provided with the return capillary between an oil outlet of the oil separator on exhausting side of the compressor and an air suction pipe of the compressor. A solenoid valve is connected in series on the pipe branch. The solenoid valve and an unloading valve of the air-conditioning system are merged into a whole, and oil unloading or return is carried out through controlling the solenoid valve respectively by the program. The control method for the auxiliary device of the oil separator is composed of selecting the return capillary and controlling opening period and duration of the solenoid valve. The invention has the advantages of effectively solving contradiction between normal oil return of the compressor assured by frequency conversion or variable capacity air-conditioning system and realizing high EER / COP and good cooling or heating, the unloading valve and the solenoid valve being merged into a whole, oil return of the compressor being optimized and cost of the system being not increased.

Description

technical field [0001] The present invention relates to an air conditioning system, in particular to an auxiliary oil return device for an oil separator of a variable frequency or variable capacity compressor in the air conditioning system and a method for controlling the oil return of the compressor Background technique [0002] The lubricating oil in the air conditioner compressor is very important to the normal operation of the compressor. At any time when the air conditioner is running, it is necessary to ensure that there is sufficient lubricating oil in the compressor. [0003] When the air conditioner unit is running, the lubricating oil in the compressor will be brought to the indoor units and piping along with the circulation of the refrigerant. If the taken away compressor lubricating oil cannot return to the compressor in time, the There will be less and less lubricating oil in the compressor, and the moving contact parts such as bearings and volutes in the compre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/04F04C29/02
Inventor 杜光林张晓兰毛守博涂虬何建奇
Owner HAIER GRP CORP
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