Heat pump type modularized light water cooling water chilling unit for ship and control method thereof

• Main Authors: CHEN HUA, ZHANG JINGWEI, ZHANG XUEWEI, YUAN ZHIFENG, OUYANG TI, LIANG JIERONG
• Format: Patent
• Language: English
• Published: 11.02.2015
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

The invention discloses a heat pump type modularized light water cooling water chilling unit for a ship and a control method thereof. The unit comprises a plurality of mutually independent unit main bodies, an electric control box and a control system. The unit main bodies and the electric control box are independently arranged and the unit main bodies are connected with the electric control box. The unit main bodies and the electric control box are connected with the control system. Each unit main body comprises a compressor, a first shake-proof tube, a four-way reversing valve, a first heat exchanger, an expansion valve, a fresh water heat exchanger, a second shake-proof tube, an electromagnetic valve, an energy regulator, a high pressure switch, a first low pressure switch, a second low pressure switch, a condensing pressure switch and a water regulating valve. The unit has cooling and heating functions simultaneously, a cooling system is automatically regulated to match operation, manual interference is not needed and an optimal energy efficiency ratio can be achieved. Due to adoption of variable flow cooling regulation, the unit can operate in a safe, reliable, efficient and energy-saving state and power is saved. Due to the fact that each unit main body is relatively independent, the size is small, the weight is light, disassembly and transportation are convenient and maintainability is improved.