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A dual-temperature air-conditioning system, control method, and air conditioner

A technology of air-conditioning system and control method, which is applied in the directions of air-conditioning system, refrigeration and liquefaction, space heating and ventilation, etc. It can solve the problems that throttling devices cannot achieve stable control, and the system cannot operate stably, reliably, and efficiently, and achieve reliable and efficient operation

Active Publication Date: 2021-07-30
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 by the present invention 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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  • A dual-temperature air-conditioning system, control method, and air conditioner
  • A dual-temperature air-conditioning system, control method, and air conditioner
  • A dual-temperature air-conditioning system, control method, and air conditioner

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Embodiment 1

[0080]A dual-temperature system, including a double-suction and double-row compressor 1, an oil separator 6, a first oil return control valve 7, a first four-way valve 21 and a second four-way valve 22, an outdoor heat exchanger 3, a second A throttling device 41 and a second throttling device 42 , a first indoor heat exchanger 51 and a second indoor heat exchanger 52 , an outdoor fan 9 and an 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.

[0081] 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 o...

Embodiment 2

[0083] An air conditioning system, including a double-suction and double-row compressor 1, an oil separator 6, a second oil return control valve 10, an oil return capillary 11, a first four-way valve 21 and a second four-way valve 22, and an outdoor heat exchange 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

[0085] A dual-temperature system, including a double-suction double-row compressor 1, an oil separator 6, a first oil return control valve 7, a first four-way valve 21 and a second four-way valve 22, an outdoor heat exchanger 3, a first The 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.

[0086] 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...

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Abstract

The invention provides a dual-temperature air-conditioning system, a control method and an air conditioner. The dual-temperature air-conditioning system includes: a compressor, an outdoor heat exchanger, a first indoor heat exchanger, and a second indoor heat exchanger. The compressor includes a first cylinder and the second cylinder; the outdoor heat exchanger communicates with the first indoor heat exchanger through the first pipeline, the first pipeline is provided with a first throttling device, and the outdoor heat exchanger also communicates with the second indoor heat exchanger through the second pipeline The heater is connected, and the second pipeline is provided with a second throttling device; the opening degree of the first throttling device can be controlled and adjusted according to the exhaust superheat degree of the first exhaust port, and the opening degree of the second throttling device can be adjusted according to the second Exhaust superheat control regulation at the exhaust port. According to the present invention, it is possible to realize the stable control of the two throttling devices in the dual-temperature air-conditioning system, prevent the mutual influence of the opening degrees between the two throttling devices in the actual control, and the situation that the coupling cannot lead to stable control, and ensure the dual-temperature air-conditioning The system operates stably, reliably and efficiently.

Description

technical field [0001] The invention 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 decay rate und...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00F25B31/00F25B41/30F25B41/20F25B49/02F24F3/06F24F13/30F24F11/83F24F11/64
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