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Multi-line system

A multi-connection system and compressor technology, applied in the field of multi-connection systems, can solve problems such as damage, inability to realize effective protection of multi-connection systems, insufficient intelligence and comprehensiveness, etc., and achieve stable and reliable operation

Active Publication Date: 2017-05-03
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if there is a high drop such as 90 meters between the flow distribution device and the outdoor unit, the pressure value of the pressure sensor will far exceed its pressure range, which may damage the pressure in the flow distribution device to collect the front and rear pressure values ​​of the electronic expansion valve. sensor
Therefore, the control logic is not intelligent and comprehensive enough to effectively protect the multi-connected system

Method used

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Examples

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Embodiment Construction

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0022] The multi-connection system proposed according to the embodiment of the present invention is described below with reference to the accompanying drawings.

[0023] like Figure 1 to Figure 5 As shown, the multi-connected system of the embodiment of the present invention includes: an outdoor unit 10 , a plurality of indoor units such as four indoor units 21 , 22 , 23 , 24 , and a distribution device 30 .

[0024] Among them, the outdoor unit device 10 includes a compressor 101, a four-way valve 102, an outdoor heat exchanger 103, a...

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Abstract

The invention discloses a multi-connection system, which includes an outdoor unit, a flow distribution device, and a plurality of indoor unit devices, wherein the outdoor unit includes a compressor, an outdoor heat exchanger and a four-way valve. When the flow distribution device When the pressure value reaches the system withstand pressure value, the outdoor unit device obtains the current pressure value of the compressor, and when the current pressure value of the compressor is lower than the pressure frequency limit value, the outdoor unit device obtains the current pressure value of the compressor according to the The current pressure value of the compressor updates the pressure frequency limit value of the compressor. The multi-line system can judge whether to regenerate the pressure frequency limit value of the compressor according to the current pressure value of the compressor when the pressure value of the flow splitting device reaches the system withstand pressure value, so that the compressor can be regenerated according to the adjusted pressure frequency limit value. Protection control enables the entire system to be effectively protected.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a multi-connected system. Background technique [0002] With the continuous development of air-conditioning technology and the strengthening of people's awareness of environmental protection, heat recovery multi-line systems are becoming more and more popular in the market. The two-pipe heat recovery multi-connection system is one of the mainstream heat recovery multi-connection systems on the market at present. The two-pipe heat recovery multi-connection system can realize simultaneous cooling and heating. In order to make multiple indoor unit systems To achieve better results in heating and cooling, it is necessary to effectively control the subcooling degree of the split device, which requires the pressure sensor to accurately collect the front and rear pressure values ​​of the electronic expansion valve in the split device. [0003] The current mainstream control lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00F25B41/04F25B41/06F25B41/20F25B41/34
CPCF25B13/00F25B49/022F25B2500/07F25B41/31F25B41/20
Inventor 罗彬陈俊伟
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD