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 a water-cooled air-cooled cabinet air conditioner adopts the control scheme shown in Figure 1, it is required to develop at least three types of controllers, namely, mainboard A for single-compressor systems, mainboard B for dual-compressor systems, and mainboard C for applications For multi-compressor systems, the disadvantages of this approach are...

AI Technical Summary

Problems solved by technology

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

[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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