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Dual-temperature air conditioning system, control method and air conditioner

An air-conditioning system, control and adjustment technology, applied in air-conditioning systems, refrigeration and liquefaction, space heating and ventilation, etc. And efficient operation, the effect of decoupling

Active Publication Date: 2020-09-01
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved in this application is to overcome the defect that the two throttling devices in the dual-temperature air-conditioning system in the prior art cannot achieve stable control, resulting in the system being unable to operate stably, reliably, and efficiently, thereby providing a dual-temperature air-conditioning System, control method and air conditioner

Method used

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  • Dual-temperature air conditioning system, control method and air conditioner
  • Dual-temperature air conditioning system, control method and air conditioner
  • Dual-temperature air conditioning system, control method and air conditioner

Examples

Experimental program
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Effect test

Embodiment 1

[0087] A dual-temperature system, including a double-suction double-row compressor 1, an oil separator 6, an oil return control valve 7, a first four-way valve 21 and a second four-way valve 22, an outdoor heat exchanger 3, and a first throttle device 41 and second throttling device 42 , first indoor heat exchanger 51 and second indoor heat exchanger 52 , outdoor fan 9 and indoor fan 8 . The double-suction double-row compressor has a first suction port 101 and a first discharge port 103 connected to the first compression cylinder, and a second suction port 102 and a second discharge port connected to the second compression cylinder 104, and the oil return port 105 that communicates with the oil sump at the bottom of the compressor.

[0088] The first exhaust port 103 is connected to the outdoor heat exchanger 3 through the first four-way valve 21, the second exhaust port 104 is connected to the oil separator 6, and the oil separator 6 is connected to the outdoor heat exchanger...

Embodiment 2

[0090] An air conditioning system, comprising a double-suction double-row compressor 1, an oil separator 6, an oil return stop valve 10, an oil return capillary 11, a first four-way valve 21 and a second four-way valve 22, an outdoor heat exchanger 3, The first throttling device 41 and the second throttling device 42 , the first indoor heat exchanger 51 and the second indoor heat exchanger 52 , the outdoor fan 9 and the indoor fan 8 . The double-suction double-row compressor has a first suction port 101 and a first discharge port 103 connected to the first compression cylinder, and a second suction port 102 and a second discharge port connected to the second compression cylinder 104, and the oil return port 105 that communicates with the oil sump at the bottom of the compressor.

Embodiment 3

[0092] Embodiment 3 is basically the same as Embodiment 1 or 2, the difference is that in this embodiment, the oil return device is omitted, and the gas discharged from the first cylinder and the gas discharged from the second cylinder are compressed The mixture inside the shell of the machine is discharged through the third exhaust port 106, and the third exhaust port 106 is respectively connected to a port of the first four-way valve 21 and the second four-way valve 22.

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Abstract

The application provides a dual-temperature air conditioning system, a control method and an air conditioner. The dual-temperature air conditioning system comprises a compressor, an outdoor heat exchanger, a first indoor heat exchanger and a second indoor heat exchanger, wherein after confluence, a first pipeline and a second pipeline communicate with the outdoor heat exchanger through a third pipeline; a first throttling device is arranged on the third pipeline; a second throttling device is arranged on the second pipeline; and the opening of the second throttling device is fixed; corresponding opening benchmark and opening upper and lower limits of the opening of the first throttling device can be selected from a preset throttling device opening figure, and is controlled according to first exhaust temperature or second exhaust temperature of the compressor, or is controlled and adjusted according to the third exhaust temperature of a third exhaust opening. According to the dual-temperature air conditioning system disclosed by the invention, the stable control of the two throttling devices in the dual-temperature air conditioning system can be realized, so that the dual-temperature air conditioning system is guaranteed to stably, reliably and efficiently run.

Description

technical field [0001] The present application relates to the technical field of air conditioning, in particular to a dual-temperature air conditioning system, a control method, and an air conditioner. Background technique [0002] Existing air-conditioning systems usually use a single-suction single-row compressor, which forms a refrigeration cycle with indoor and outdoor single-row or multi-row heat exchangers to heat or cool indoor air to meet the comfort requirements of the indoor environment. Since the air conditioning system has only one pair of suction and exhaust ports connected to the indoor and outdoor heat exchangers, only one evaporation temperature and condensation temperature can be realized. In order to realize cascaded heating or cooling of indoor air, the patent application number CN105444453A proposes a dual-temperature air-conditioning system with dual-cylinder parallel compressors to improve system energy efficiency and slow down the energy efficiency dec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B31/00F25B41/06F25B41/04F25B49/02F24F3/06F24F13/30F24F11/83F24F11/64F25B41/20F25B41/30
CPCF25B13/00F25B31/00F25B31/004F25B49/02F24F3/065F24F13/30F24F11/83F24F11/64
Inventor 郑波吕如兵黄健贵梁祥飞
Owner GREE ELECTRIC APPLIANCES INC
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