Air conditioner intelligent control method

Abstract

The invention relates to air conditioner filed, in particular to an intelligent control method of air conditioner. By overcoming the shortcomings of the prior art, the invention needs not to develop multiple selection systems corresponding to multiple system requirements or manually set the selection system by dial-up, jumping wire, and other methods, instead, the invention utilizes a general control mainboard to perform automatic detection of system number in accordance with air inlet temperature, air outlet temperature, air inlet pressure, air outlet pressure that are fed back from the compressor, overload protection quantity and other parameters, and then invokes the corresponding control program to control, so that one control mainboard is general for multiple-type or multi-system air-conditioning system, and the problems in the prior art including complex types, various dial-up codes, complex wiring, and complex production, debugging and maintenance of the control mainboard can be solved. In addition, aiming at multi-system and multi-compressor air conditioner, the intelligent control balances the compressors to perform controlling function, so that the service life of complete air conditioning unit is prolonged and the reliability is also improved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an intelligent control method for the air conditioner. Background technique [0002] In the existing central air-conditioning system, one type of unit is often divided into different types of single compressor, double compressor and multi-compressor. For different air-conditioning control objects due to the different number of compressors, the current general practice is to develop multiple controllers for one type of model or to use artificial settings such as jumpers or dialing codes to distinguish different systems. For example, if the water-cooled air-cooled cabinet air conditioner adopts figure 1 The control scheme shown requires the development of at least three types of controllers, namely, mainboard A for single-compressor systems, mainboard B for dual-compressor systems, and mainboard C for multi-compressor systems. The disadvantages of this approach are obvious: A larg...

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Problems solved by technology

For example, if the water-cooled air-cooled cabinet air conditioner adopts figure 1 The control scheme shown requires the development of at least three types of controllers, namely, mainboard A for single-compressor systems, mainboard B for dual-compressor systems, and mainboard C for multi-compressor systems. The disadvantages of this approach are obvious: A large number of controller models have been developed, and the controller models corresponding to each model are different, causing a large number of problems in storage, production, and after-sales maintenance; if using figure 2 The scheme shown, using a controller board C and then distinguishing different systems through jumpers or dialing codes, is a great improvement over the first scheme, but its disadvantage is that it is necessary to artificially set dialing codes for different control objects , jumper, these settings need to be checked in detail in the manual, which is still a difficult problem for production and customers. Practice has proved that the proportion of faults caused by the problem of dial jumper is very high, and the maintenance cost is also high; in short, the current method , either the controller model is complex and difficult to maintain, or it needs to be set manually, which is easy to cause setting errors, cause the unit to not work normally, and generate a large number of complaints and other problems

[0003] In addition, many current units do not consider the problem of balanced operation of compressors. Basically, when the load is small, a certain compressor (such as compressor 1) is used. When the load becomes larger, compressor 2 is started, and when the load is larger, compressor 3 is started, etc. This causes the problem that in the transitional season, when the load is not large for a long time, the compressor 1 runs for a long time, and the other can not get the running time, which makes the use of the compressor 1 serious, and even greatly reduces the service life. Other compressors are still in good condition, resulting in a significant reduction in the service life of the whole machine

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