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Lubricating oil heating method of frequency converting air-conditioner compressor

A heating method and frequency conversion air conditioner technology, which is applied to liquid variable capacity machinery, mechanical equipment, variable capacity pump components, etc., can solve the problems of inability to start, large starting load of the compressor, damage to the compressor, etc., to save costs, Guarantee the effect of normal startup

Active Publication Date: 2009-03-25
SUZHOU SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the compressors of low-power inverter air conditioners usually do not preheat before starting, but if the outside temperature is low, the lubricating oil will easily solidify, and the compressor will have a large startup load, which will affect the use of the compressor and even damage the compressor; high-power inverter air conditioners The method of tightening the electric heating belt outside the press is adopted. When the external temperature is low, the heating belt is used to heat the lubricating oil; but the cost of using the heating belt is high, and the heating time is long, and the effect is not ideal.

Method used

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  • Lubricating oil heating method of frequency converting air-conditioner compressor
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  • Lubricating oil heating method of frequency converting air-conditioner compressor

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0015] The heating device of the present invention borrows the six-way IGBT and the relevant peripheral circuits of the single-chip microcomputer to drive the frequency conversion compressor, and its connection mode is explained (see figure 1 ). The six IGBTs U+, U-, V+, V-, W+, and W- are respectively connected to the PWM output port of the microcontroller. Every two IGBTs named after U, V, and W are connected in series respectively. At the terminal, the U, V, and W phases of the three-phase coils of the compressor are respectively connected to the midpoint of the branch bridge arm of the corresponding U, V, and W three-way IGBT. When the outdoor temperature is lower than the set temperature, the compressor will heat its own coil before starting to melt the lubricating oil, and then start the compressor normally to ensure that the compressor ...

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Abstract

The invention relates to a method for heating lube of a frequency conversion air-conditioning compressor. A PWM signal is output through a singlechip; two IGBTs for driving the frequency conversion compressor which are connected with a two-phase coil in the compressor respectively and form a loop are opened; and the coil is heated; one of the IGBTs is closed so that the coil produces opposing electromotive force to form a continuous current loop. The method has the following characteristics: under the environment of lower outdoor temperature, the method allows a frequency conversion air conditioner to carry out heating and melting on the lube effectively, ensures the normal startup of the compressor, avoids the occurrence of faults caused by overcurrent of the compressor, does not add extra hardware equipment, only improves the heating method on the basis of the prior circuit and saves the expense for purchasing an additional electric heating belt.

Description

technical field [0001] The invention relates to a method for heating lubricating oil of an inverter air conditioner compressor, in particular, the inverter air conditioner can effectively heat and melt the lubricating oil in an environment with a low outdoor temperature, so as to ensure the normal startup of the compressor and avoid damage caused by the overcurrent of the compressor. cause abnormal phenomena to occur. Background technique [0002] Now, with the enhancement of people's awareness of energy conservation, the application of inverter air conditioners is becoming more and more extensive. At present, the compressors of low-power inverter air conditioners usually do not preheat before starting, but if the outside temperature is low, the lubricating oil will easily solidify, and the compressor will have a large startup load, which will affect the use of the compressor and even damage the compressor; high-power inverter air conditioners The method of tightening the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/06F04C29/04
Inventor 赵恩英宋伟张起云徐锡胜
Owner SUZHOU SAMSUNG ELECTRONICS CO LTD
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