Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multi-split air conditioning system and starting control method thereof

A multi-connected air conditioner and start-up process technology, which is applied in the direction of mechanical equipment, etc., can solve the problems of low pressure in the system, the inability to effectively avoid compressor liquid shock, impact, etc., to achieve the effect of preventing liquid shock, stable and reliable operation, and ensuring the operation effect

Active Publication Date: 2019-04-16
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the opening of the expansion valve of the internal and external units is too small during startup, it will affect the air-conditioning effect and even lead to failures such as low pressure in the system, and if the opening is too large, it will not be able to effectively avoid compressor liquid shock

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-split air conditioning system and starting control method thereof
  • Multi-split air conditioning system and starting control method thereof
  • Multi-split air conditioning system and starting control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

[0043] figure 1 It is a schematic diagram of the main steps of the embodiment of the start-up control method of the multi-connected air-conditioning system of the present invention. The multi-connected air-conditioning system in this embodiment includes an outdoor unit and a plurality of indoor units connected to the outdoor unit. Expansion valves for adjusting refrigerant flow are arranged on both sides of the outer unit and the inner unit, and the compressor is arranged in the outer unit. Such as figure 1 As shown, the startup control method of this embodiment includes steps S1-S3:

[0044] In step S1, during the start-up process of the mu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of air conditioners, in particular to a multi-split air conditioning system and a starting control method thereof. The multi-split air conditioning systemand the starting control method thereof aim to solve the problems that in the prior art, when an air conditioning system is started, the air conditioning effect is affected and even the system has ultralow pressure and other faults if the opening degrees of expansion valves of an indoor unit and an outdoor unit are too small, but compressor liquid impact cannot be effectively avoided if the opening degrees are too large. The starting control method of the multi-split air conditioning system includes the following steps of obtaining operation parameters of a compressor in a timed mode in the starting process of the multi-split air conditioning system, obtaining an operation mode of the multi-split air conditioning system, calculating target opening degree values of expansion valves according to the operation mode and the operation parameters, and adjusting the opening degrees of the expansion valves on the outdoor unit side or the indoor unit side according to the operation mode and thetarget opening degree values of the expansion valves. Compared with a method that expansion valves are kept in a fixed opening degree in the starting process in the prior art, the operation effect ofthe multi-split air conditioning system is guaranteed to the maximum extent under the condition of effectively preventing liquid impact, and stable and reliable operation of the system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a multi-connected air conditioning system and a start-up control method thereof. Background technique [0002] In a multi-split air conditioning system, the outdoor unit is connected to multiple indoor units. In order to ensure the normal operation of the system, it is necessary to add refrigerant on site according to the pipeline length and pipe diameter of the internal and external units. However, at the same time, too much refrigerant will cause liquid hammer damage to the compressor at the initial stage of system operation. [0003] The invention patent document with the publication number CN107642873A (application date: 2017.10.31, publication date: 2018.01.30) discloses a method for controlling the opening of the electronic expansion valve when the air conditioner is started. Determine whether the startup is in a cold start state, a hot start state or an intermedi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/84F24F11/64
CPCF24F11/64F24F11/84
Inventor 禚百田时斌程绍江张锐钢王军
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com