Air conditioning system

An air-conditioning system and equipment technology, applied in heating and ventilation control systems, heating and ventilation safety systems, space heating and ventilation, etc., can solve problems such as compressor damage and system instability, and achieve improved stability and improved stability Effects on sex and performance

Active Publication Date: 2009-07-08
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, a problem with air conditioning systems according to prior art is that the system can become unstable and prone to compressor damage etc. if not properly controlled

Method used

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Experimental program
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Embodiment Construction

[0034] Air conditioning systems include general residential cooling air conditioners for cooling only, heating air conditioners for heating only, heat pump air conditioners for both cooling and heating, and multi-unit air conditioners for cooling and heating multiple indoor spaces . Next, a heat pump type air conditioner (hereinafter referred to as "air conditioner") as an example of an air conditioning system will be described in detail.

[0035] Embodiments of the present invention will be described below with reference to the drawings.

[0036] figure 1 The view of : shows the structure of the air conditioner 100 according to the first embodiment of the present invention. figure 2 is a block diagram showing the control flow of the air conditioner 100 .

[0037] refer to figure 1 and 2 , the air conditioner 100 includes a compressor 110 , an indoor heat exchanger 120 , an outdoor heat exchanger 130 , a first expansion valve 141 , a second expansion valve 142 , a phase ...

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PUM

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Abstract

In an air conditioning system, a first expansion device and a second expansion device playing a different role from each other are controlled in a different control method suitable for each role, thereby improving the performance and stability of the system. Furthermore, the control method for the first expansion device is differentiated according to the operation state of the air conditioning system, thereby improving the stability of the system. Furthermore, the intermediate pressure can be adjusted more rapidly and precisely according to the state of the air conditioning system by differentiating the control method for the first expansion device for adjusting the intermediate pressure depending on the degree of superheat of the refrigerant, thereby improving the stability and performance of the system. Furthermore, the first expansion device is gradually opened by controlling such that a change in opening degree may change according to the opening time of the first expansion device, thereby improving the stability of the system and achieving more stable switching of the control method for the first expansion device.

Description

technical field [0001] The present invention relates to an air conditioning system, and more particularly, to an air conditioning system capable of improving the performance and stability of the system. Background technique [0002] In general, an air conditioning system is an apparatus for cooling or heating an indoor space by compressing, condensing, expanding, and evaporating a refrigerant. [0003] Air conditioning systems are classified into a conventional air conditioner including an outdoor unit and an indoor unit connected to the outdoor unit and a multi-connected air conditioner including an outdoor unit and a plurality of indoor units connected to the outdoor unit. Also, air conditioning systems are classified into refrigeration air conditioners that supply only cooling air to indoor spaces by driving refrigerant circulation in only one direction and cooling air conditioners that supply cool or warm air to indoor spaces by selectively and bidirectionally driving re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00F25B49/02
CPCF25B2600/2513F25B2700/21151F25B2700/21152F25B2700/2116F25B2700/2117F24F11/84F24F11/62F25B41/31
Inventor 高永桓金范锡千万浩
Owner LG ELECTRONICS INC
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