Energy level adjustment method of screw compressor
A technology of screw compressors and adjustment methods, which is applied in the direction of machines/engines, etc., and can solve the problems of small air intake of screw compressors, difficulty in ensuring, and difficulty in meeting the cooling needs of motors
Active Publication Date: 2019-02-05
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0003] The inventors have found that at least the following problems exist in the prior art: during the actual operation of the screw compressor, it is difficult to ensure that it operates under full load, but can only operate at a partial energy level, which makes the energy efficiency of the screw compressor low. The screw compressor has a small air intake, which makes it difficult to meet the cooling needs of the motor
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[0029] Combine below Figure 1 to Figure 3 The technical solution provided by the present invention is described in more detail.
[0030] see figure 1 , an embodiment of the present invention provides a method for adjusting the energy level of a screw compressor, comprising the following steps:
[0031] Step S10, providing a reference working condition, and measuring the current A corresponding to the maximum energy level of the screw compressor under the reference working condition 1 And the current A corresponding to the minimum energy level of the screw compressor 2 .
[0032] The benchmark working conditions include: cooling mode, heating mode, sweeping mode, and dehumidification mode.
[0033] Optionally, the modes of the reference working condition and the actual working condition are the same, for example, both are cooling working conditions, both are heating working conditions, both are dehumidifying working conditions, and both are both sweeping wind working condi...
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The invention discloses a screw compressor energy level adjusting method, and belongs to the field of air-conditioning. The screw compressor energy level adjusting method is used for increasing energy level of screw compressors. The screw compressor energy level adjusting method comprises following steps: reference working conditions are provided so as to obtain the current A1 corresponding to the largest energy level and the current A2 corresponding to the smallest energy level under reference working conditions; the current Amax1 corresponding to the largest energy level in actual working conditions is measured; loading of a screw compressor is carried out, and the largest current Amax2 corresponding to the largest energy level after loading is measured; the smallest current Amin corresponding to the smallest energy level after loading of the screw compressor is calculated based on the parameters; load Q under actual energy level is calculated based on the parameters and the current value A under actual energy level in actual working conditions; load Q and the theory load value Qm recorded in a control system are compared, and calibration of the position of a slide valve is realized. According to the screw compressor energy level adjusting method, the largest current is obtained via loading, and screw compressor energy efficiency can be increased based on the largest current value.
Description
technical field [0001] The invention relates to the field of air conditioning equipment, in particular to a method for adjusting the energy level of a screw compressor. Background technique [0002] At present, in the refrigeration application field of semi-hermetic screw compressors, the motor used to drive the screw compressor is cooled by the suction of the screw compressor. When the screw compressor is running at full load, the energy efficiency is the highest, the corresponding suction volume is the largest, and the motor can be effectively cooled. [0003] The inventors have found that at least the following problems exist in the prior art: during the actual operation of the screw compressor, it is difficult to ensure that it operates under full load, but can only operate at a partial energy level, which makes the energy efficiency of the screw compressor low. The screw compressor has a small air intake, which makes it difficult to meet the cooling needs of the motor. ...
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IPC IPC(8): F04C28/12
CPCF04C28/12
Inventor 何汝龙安亚洲练浩民周巍
Owner GREE ELECTRIC APPLIANCES INC