A fan coil temperature control panel with cleaning mode

Abstract

The invention discloses a fan coil temperature control panel with a cleaning mode. The hardware of the fan coil temperature control panel is identical with that of an existing temperature control panel. The fan coil temperature control panel with the cleaning mode comprises keys, a liquid crystal display screen, a control mainboard and an output terminal, wherein both the liquid crystal display screen and the keys are arranged on the upper portion of a temperature control panel body, an output board is arranged on the bottom of the temperature control panel, and the liquid crystal display screen, the keys and the output terminal are all connected with the control mainboard in the temperature control panel; the cleaning mode is added based on the existing automatic mode, refrigerating mode, heating mode, dehumidifying mode and air feeding mode of the existing temperature control panel. In the cleaning mode, air-conditioner circulating water can flow in a fan coil in a circulation mode during cleaning simply by opening an electric water valve, a fan does not need to be started, and cyclic cleaning of a system is facilitated.

Description

technical field [0001] The invention relates to the field of central air-conditioning terminal control, in particular to a central air-conditioning terminal fan coil temperature control panel with a cleaning mode. Background technique [0002] Generally, the central air-conditioning system of a large building mainly includes the cold and hot water main engine and the refrigeration circulating water pump in the computer room, the fan coil units (ranging from hundreds to thousands of units) scattered in each room, and the chilled water circulation pipes connected to them. [0003] The fan coil unit is composed of a water coil unit and a fan. It is connected to the main chilled water pipe externally. An electric water valve is installed at the water inlet pipe. When the electric valve is energized, the valve opens, and cold or hot water enters the coil, exchanges heat with the air, and is sent out by the fan coil. Air-conditioning or heating; the electric valve is powered off a...

AI Technical Summary

Problems solved by technology

[0006] However, the existing fan coil temperature control panel does not have the function of independently opening the electric water valve. When cleaning each cycle, you must first turn on the fan on the temperature control panel, set the cooling mode, and at the same time set the temperature setting value to be lower than the room temperature, or Set the heating mode and set the temperature setting value higher than the room temperature at the same time to open the electric water valve

That is to say, when the existing temperature control panel opens the water valve, the fan will run, and there is no function of only turning on the water valve without turning on the fan

[0007] In addition, the central air-conditioning chilled water pipe network is generally very complex and huge, and the cleaning time is long. A large-scale system cleaning often lasts for more than a week. During this period, hundreds of fan coil units need to start the fans, which will cause a lot of power waste ; And cleaning is in the non-cooling or heating spring and autumn transitional seasons, when the fan coil unit is turned on in the room, even the low-grade wind speed will cause discomfort to the people in the room; the air-conditioning fee is charged by directly measuring the electricity bill of the fan users, it will cause inaccurate billing

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