Under the normal operation of the chiller, the indoor controller is composed of MCU, display and control panel, cooling water temperature detection circuit, A / D converter between the cooling water temperature detection circuit and microprocessor, interface circuit for serial communication with outdoor unit, and power supply circuit. The specific parameters are analyzed below.
The microprocessor can use 8031 chip, and the A / D conversion circuit is 8-bit A / D converter (0801). The functions of display and control panel include temperature setting, temperature display, status indication, system start and stop. The temperature setting is changed by "ten" and "one" buttons, with each change of 0.5 ℃: the temperature display adopts 3-digit digital tube, which displays the set temperature in the setting state and the working temperature in the working state; The status indication is realized by two two-color indicator lights, indicating that the system is in power on standby state, normal operation state or low temperature stop state, The input end of U2 is connected to the sending end of microprocessor through resistance, the output end of U2 is connected to the outdoor unit controller through the input end of U1 and diode D2, and the output end of U1 is connected to the receiving end of microprocessor after voltage division through R6 and R7.
Because the heat exchange of water is better than that of air, when the outdoor unit of air conditioner is used to make cold water, its refrigeration capacity is 1.2-1.3 times larger than that of air, so that the refrigeration capacity of 1 HP chiller can reach about 3300W.
The indoor unit is composed of indoor controller 1, cold water package 2, water pump 3, filter 4, water pressure switch, etc. the size of the indoor unit can be 400mm x 600m x 200mm, the volume is about 48l, and the weight is about 30kg, which is convenient for wall mounting and installation. The cold water package is installed in the upper left part of the cabinet. Its size is 230mm x 400mm x 180mm, and its water capacity is 11L. The water pump is installed in the lower part of the cabinet, with a power of 250W and a flow rate of 120L / min. The threshold value of water pressure switch can be adjusted, and the range is 0-0.2mpa. This machine is set at about 0.05Mpa in use. When the actual water pressure is lower than the set threshold value, the water pressure switch will be disconnected to provide the water pressure protection signal to the control system. The filter on the right side of the cabinet can generate water to protect the laser from water pollution.
Nanjing RICOM Refrigeration Equipment Co.,Ltd is an industry-trade integrated manufacturers for 20 years,who is engaged in the industrial temperature control technology,implements the modern quality management system ISO9001:2008 and ISO14001 environment system:2004 standard,to ensure enterprise team in technology innovation,we pay attention to customers' sense of use and satisfaction, and get the consistent recognition of the industry and customers;obtained AAA credit rating certification.In 2016, it was awarded as a contract abiding and trustworthy enterprise.In 2013,the company established the production base of chiller and mould tempering machine in Chuzhou RICOM plastic technology Co.,Ltd.
