Cooling system for cold and hot water machine set with fan disc pipe

Abstract

The invention discloses a control system with fan coil unit for cool-hot water unit, realizing interlocking control of host controller and terminal controller. The control system comprises fan coil unit, coil pipe controller, host controller and centralized controller. The power for motor of fan coil unit is provided by host controller, on which current transformer and current detecting circuit, which is used to detect current of fan coil unit supply, are set; by detection and judgment for the current of fan coil unit, host controller and coil pipe controller accomplish interlocking control for power supply of motor of fan coil unit, host and centralized controller respectively. It is provided with simple and separated operation, automatic adjusting temperature and so on. There is no need to worry about the energy waste by the factors such as human management and it is conquered that host without loading works. It is provided with cool air resistance in winter and hot air resistance in summer. It provides more comfortable circumstance for user and is widely applied in the control system of cool water unit and cool-hot water unit with terminal equipment.

Description

technical field [0001] The invention relates to a control system of a central air-conditioning unit with terminal equipment, in particular to a control system of a cold and hot water unit with a fan coil. Background technique [0002] At present, the air-cooled heat pump chiller and hot water unit plus fan-coil air-conditioning system is independently controlled by two controllers, the main controller and the terminal controller. control, as shown in Figure 1. The disadvantages of the above-mentioned control method are: 1. The host needs to be managed by a special person for long-term use by the user, which is very inconvenient to use; 2. Since this type of system is composed of multiple terminal controllers and the host controller, once the operation is not coordinated, such as the coil has been If you forget to turn off the main unit, the main unit will continue to work without load, which will cause a huge waste of energy; 3. In winter, there is no automatic anti-cold wi...

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Problems solved by technology

The disadvantages of the above-mentioned control methods are: 1. The host needs to be managed by a special person for long-term use by the user, which is very inconvenient to use; 2. Since this type of system is composed of multiple terminal controllers and host controllers, once the operation is not coordinated, such as the coil has been All closed, if you forget to turn off the host, the host will continue to work without load, which will cause a huge waste of energy; 3. In winter, there is no automatic anti-cold wind function at the end, which cannot achieve the effect of comfortable use

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