Multi-split system

A multi-connection system and indoor unit technology, applied in the field of multi-connection systems, can solve problems such as limited adjustment range, insufficient intelligence, and difficult system operation, and achieve the best results

Active Publication Date: 2015-07-01
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

[0003] However, in the related art, the medium-pressure control strategy for the diverter device is to control the pressure difference before and after the first electronic expansion valve in the diverter device according to a certain value or within a certain range

Method used

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Embodiment Construction

[0022] 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.

[0023] The multi-connection system proposed according to the embodiment of the present invention is described below with reference to the accompanying drawings.

[0024] Such as 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 .

[0025] Among them, the outdoor unit device 10 includes a compressor 101, a four-way valve 102, an outdoor heat exchanger 103...

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Abstract

The invention discloses a multi-split system. The multi-split system comprises an outdoor unit device, a shunting device and multiple indoor unit devices; the shunting device comprises a gas-liquid separator, a first heat exchange assembly, a first electronic expansion valve, a second heat exchange assembly and a second electronic expansion valve. The shunting device controls the first electronic expansion valve according to a preset medium voltage initial control target value and obtains the supercooling degree values and superheat degree values of the heating indoor unit devices and opening degree values of throttling elements in all the indoor unit devices, and if the opening degree value of the throttling element in any indoor unit device reaches the maximum opening degree, the shunting device adjusts the current medium voltage control target value according to the supercooling degree values and the superheat degree values of the heating indoor unit devices. The multi-split system can automatically adjust the medium voltage control target value according to the state parameters of operating heating indoor units and operating refrigerating indoor units, so that the simultaneous refrigerating and heating effect of the multi-split system is optimal.

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. To achieve better results, it is necessary to carry out medium pressure control on the shunt device. [0003] In the related art, the medium pressure control strategy for the diverter device is to control the pressure difference between the front and rear of the first electronic expansion valve in the diverter device according to a certain value or within a certain r...

Claims

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Application Information

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IPC IPC(8): F25B13/00F25B41/04F25B41/06F25B41/20F25B41/34
CPCF24F3/065F24F11/30F24F11/62F25B49/02F24F11/64F25B2600/00F25B41/20F25B2313/0231F25B2400/23F25B2600/2509Y02B30/70
Inventor 罗彬谭志军
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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