Variable refrigerant volume system

A multi-connected system and outdoor unit technology, applied in the field of multi-connected systems, can solve the problems of fluctuating outlet air temperature, affecting the heating effect of the internal heating mechanism, insufficient heating of the indoor mechanism, etc., and achieve the effect of ensuring the heating effect

Inactive Publication Date: 2015-08-12
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the related technology, the first electronic expansion valve is completely closed in the pure heating mode. After a period of time, some high-pressure and high-temperature gaseous refrigerant in the outdoor unit will gradually condense in the plate heat exchanger, and when the time is too long

Method used

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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] 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 .

[0024] 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 variable refrigerant volume system, which comprises an outdoor unit device, a shunting device and a plurality of indoor unit devices, wherein 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; when the variable refrigerant volume system is in a pure heating mode, the shunting device controls the first electronic expansion valve to be completely switched off, and when the variable refrigerant volume system is controlled to enter a liquid discharge state, the shunting device periodically switches off and switches on the first electronic expansion valve. According to the variable refrigerant volume system, the first electronic expansion valve is controlled, and a high-temperature gaseous state refrigerant is enabled to completely enter heating indoor units, so that the heating effect of the variable refrigerant volume system can be ensured.

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 in the market. Among them, the two-pipe heat recovery multi-connection system can realize simultaneous cooling and heating. The internal unit can achieve a better heating effect, and it is necessary to prevent the presence of liquid refrigerant in the plate heat exchanger in the splitter device. [0003] In the related technology, the first electronic expansion valve is completely closed in the pure heating mode. After a period of time, some high-pressure and high-temperature gaseous ref...

Claims

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Application Information

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IPC IPC(8): F25B13/00
CPCF25B13/00F25B2313/006F25B2313/023F25B2313/0231F25B2313/0292F25B2313/0313F25B2313/0315
Inventor 罗彬陈俊伟
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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