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Multi-connected capacity control method and air conditioning system

A technology of capacity control and multi-connection, which is applied in the direction of mechanical equipment, etc., can solve the problems of single control method and rough influence on the capacity of the control method, so as to achieve the effect of fitting the comfort experience and improving the operation effect

Active Publication Date: 2021-12-17
四川长虹空调有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of existing multi-connected operation, the capacity control of the compressor is mostly controlled according to the total capacity of the indoor unit, and further correction control is performed on the basis of the total capacity. The control method is single, and the control method cannot clearly reflect the impact of different factors on the capacity. more rough

Method used

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Embodiment Construction

[0019] In order to make the technical means, creative features, objectives and effects of the invention easy to understand, the present invention will be further described below in conjunction with specific examples.

[0020] In the first aspect of the present invention, the multi-line capacity control method based on the indoor set temperature includes the following steps:

[0021] S101: Record the indoor set temperatures T of all n indoor units in heating mode or cooling mode according to a certain time interval t 设i (i=1,2,...,n), set the indoor temperature T 设i The average value of is set as the indoor set temperature characteristic value T 特 ;

[0022] S102: Calculate the corresponding indoor set temperature change value δT 设i , the δT 设i Set the indoor temperature T for the nearest two consecutive records 设i Difference;

[0023] S103: Get the δT 设i The maximum value of δT 设MAX , and make a judgment: if δT 设MAX ≤The preset first indoor set temperature change thre...

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Abstract

The invention discloses a multi-line capacity control method and an air conditioning system, including: taking δT 设i The maximum value of δT 设MAX , and make a judgment: if δT 设MAX ≤The first indoor set temperature change threshold A<0, then the indoor set temperature characteristic value T 特 In the original T 特 Subtract the first temperature correction value B on the basis; if δT 设MAX ≥When the second indoor set temperature change threshold C>0, the indoor set temperature characteristic value T 特 In the original T 特 Add the second temperature correction value D on the basis; if it is in the heating mode, set the temperature characteristic value T according to the indoor 特 The increase or decrease of the capacity control target parameter is positively related to the increase or decrease control; if it is in the cooling mode, it is set according to the indoor temperature characteristic value T 特 The increase and decrease changes of the capacity control target parameters are positively correlated with the increase or decrease control. The invention has fine control, significantly improves the effect of multi-connection operation, and provides comfortable user experience.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a multi-line capacity control method and an air conditioning system. Background technique [0002] Multi-connected central air conditioner is a type of central air conditioner for users, commonly known as "one-to-many", which means that one outdoor unit is connected to two or more indoor units through piping. A primary refrigerant air conditioning system in the form of direct evaporative heat transfer. Multi-connected systems are currently being increasingly widely used in small and medium-sized buildings and some public buildings. [0003] In the process of existing multi-connected operation, the capacity control of the compressor is mostly controlled according to the total capacity of the indoor unit, and further correction control is performed on the basis of the total capacity. The control method is single, and the control method cannot clearly reflect t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/64F24F11/61F24F11/70
CPCF24F11/64F24F11/61F24F11/70
Inventor 徐强
Owner 四川长虹空调有限公司