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Multi-connected air conditioning system and control method thereof

A multi-connected air conditioner and control method technology, which is applied in heating and ventilation control systems, heating and ventilation safety systems, refrigerators, etc., can solve the problems of poor system pressure difference control effect, increase stability and improve system pressure difference The effect of control

Active Publication Date: 2013-10-30
珠海格力机电工程有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0005] The main purpose of the present invention is to provide a multi-connected air-conditioning system and its control method to solve the problem of poor system pressure difference control effect in the multi-connected system

Method used

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  • Multi-connected air conditioning system and control method thereof
  • Multi-connected air conditioning system and control method thereof
  • Multi-connected air conditioning system and control method thereof

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Embodiment Construction

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] figure 1 is a schematic diagram of a multi-connected air conditioning system according to an embodiment of the present invention, such as figure 1 As shown, the multi-connected air conditioning system includes: a first outdoor heat exchanger 1, a second outdoor heat exchanger 2, a first valve 3, a second valve 4, a control board 5, a pressure detection device 6, a compressor 7, four Through valve 8, indoor heat exchanger 9, temperature sensor 10, throttle valve 11 and gas-liquid separator 12.

[0026] Among them, the first outdoor heat exchanger 1 and the second outdoor heat exchanger 2 are connected in parallel, the A end is the water inlet, and the B end is the water outlet. After th...

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Abstract

The invention discloses a multi-connected air conditioning system and a control method thereof. The multi-connected air conditioning system comprises a compressor (7), an indoor heat exchanger (9), a four-way valve (8), a first outdoor heat exchanger (1), a second outdoor heat exchanger (2), a pressure detecting device (6) and a main control board (5). The pressure detecting device (6) is used for detecting system pressure of the multi-connected air conditioning system. The main control board (5) is connected with the pressure detecting device (6) and used for controlling the first outdoor heat exchanger (1) and / or the second outdoor heat exchanger (2) to operate according to the system pressure. By the multi-connected air conditioning system, single or two outdoor heat exchangers can be controlled to operate according to the system pressure, appropriate system heat exchange amount can be kept to allow the system to keep appropriate pressure, control capability of system pressure difference is increased, and stability of system operation is increased.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a multi-connected air conditioning system and a control method thereof. Background technique [0002] In the water source multi-connected air conditioning system, the refrigerant mainly exchanges heat with water in the outdoor unit heat exchanger to achieve the effect of condensation or evaporation. The size of the heat exchanger of the outdoor unit affects the quality of the heat exchange of the system. [0003] During the actual operation of multi-connected air-conditioning system units, the heat exchange demand of the outdoor unit condenser varies with the number of opened indoor units. When the refrigerant flow rate changes, if the heat exchange capacity of a constant size is maintained, there will be It may cause insufficient or excessive condensation of the refrigerant, so that the pressure value of the system cannot be maintained within an appropriate range. When the high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B41/04F24F11/00F24F11/02F25B41/20
Inventor 黄春李绍斌宋培刚曹勇胡朝发
Owner 珠海格力机电工程有限公司
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