多级冷媒循环与废热回收耦合的工业变频空调系统

Abstract

本申请涉及工业空调领域，特别是一种多级冷媒循环与废热回收耦合的工业变频空调系统。该系统包括室外换热单元、至少两个空调主机、送风组件以及系统控制器。所述系统控制器配置为协调控制室外换热单元及送风组件的运行。各空调主机与室外换热单元之间设置有热介质分配单元，该单元负责接收多个空调主机输出的热交换介质，并调节流量后输送给室外换热单元。所述热介质分配单元内集成有逆流换热模块，该模块包含压缩机、第一换热器和第二换热器。该系统有效回收空调系统产生的废热并将其用于外部加热需求，显著减少额外能源消耗。

Claims

1. A multi-stage refrigerant cycle and waste heat recovery coupled industrial variable frequency air conditioning system, characterized in that, The system includes an outdoor heat exchange unit, at least two air conditioning units, an air supply assembly, and a system controller. The system controller is configured to coordinate and control the operation of the outdoor heat exchange unit and the air supply assembly. A heat medium distribution unit is provided between each air conditioning unit and the outdoor heat exchange unit. This heat medium distribution unit receives the heat exchange medium output from multiple air conditioning units, adjusts the flow rate, and then delivers it to the outdoor heat exchange unit. The heat medium distribution unit integrates a counter-current heat exchange module, which includes a compressor, a first heat exchanger, and a second heat exchanger. The compressor and the first heat exchanger form a closed-loop refrigerant system. The circuit consists of: the first heat exchanger located in the main transport channel of the heat medium distribution unit, with its refrigerant flow channel and heat exchange medium flow channel forming a counter-current heat exchange relationship; the compressor is configured to pressurize the refrigerant, so that the refrigerant in the first heat exchanger is in a heat-absorbing state, thereby partially absorbing the heat energy contained in the heat exchange medium flowing through the main transport channel; the second heat exchanger is connected between the compressor outlet end and the first heat exchanger inlet end in the refrigerant circuit, and is configured to transfer the heat energy absorbed by the refrigerant from the heat exchange medium to the external fluid to be preheated; the heat medium distribution unit is equipped with a bypass pipeline and a multi-pass control valve group.

2. The industrial inverter air conditioning system of claim 1, wherein, The outdoor heat exchange unit includes a frame structure, a heat exchanger group, and a fan assembly. The heat exchanger group consists of multiple sets of parallel finned tube heat exchangers, and its internal flow channels are connected to the heat medium distribution unit through pipe interfaces to form a loop. The fan assembly adopts a multi-fan array layout, and each fan is independently equipped with a variable frequency drive device and connected to the system controller signal.

3. The industrial inverter air conditioning system coupled with multi-stage refrigerant cycle and waste heat recovery according to claim 1, characterized in that, The air conditioning unit includes an inverter compressor, an indoor heat exchanger, and a throttling device.

4. The industrial inverter air conditioning system coupled with waste heat recovery according to claim 1, wherein, The air supply assembly includes multiple distributed air supply units, each of which is independently located in the temperature control area; each air supply unit integrates a fan drive module, an air duct processing chamber, and an air volume adjustment mechanism.

5. The industrial inverter air conditioning system coupled with waste heat recovery according to claim 1, wherein, The system controller has a modular structure, including a core processing unit, a peripheral interface unit, and an operation interface unit. The peripheral interface unit provides industrial communication interfaces, including a bus interface for connecting to the air conditioning unit, a fieldbus interface for controlling the heat medium distribution unit, a wireless communication interface for receiving environmental sensors, and a distributed control interface for connecting the air supply components. The operation interface unit includes a touch screen and physical control elements.

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