Comprehensive energy-saving device for waste heat recovery of ultrasonic dishwasher

Abstract

The invention discloses a comprehensive energy-saving device for recovery of waste heat of an ultrasonic dish-washing machine. The comprehensive energy-saving device is composed of a flushing and cleaning segment, a round pipe heat exchanger, a heat pipe exchanger, an exhaust outlet, a hot air inlet, a hot water outlet pipe, a flushing water tank and an overflow pipe. Inflow water of the dish-washing machine enters the round pipe heat exchanger first and then enters the efficient phase-change heat-exchange heat pipe exchanger after being heated by overflow water in the round pipe heat exchanger, and the inflow water absorbs heat of hot steam and hot exhaust air from the air side of the evaporation segment on the condensation segment and flows out of the hot water outlet pipe after being further heated. Feedwater is heated by heating pipes in an electric heater to reach a specified temperature after undergoing secondary heat recovery heat exchange by the utilization of waste heat resources, and then the feedwater respectively flows to a cleaning pipe spray nozzle and a water inlet pipe of an ultrasonic washing segment through two paths, so that the requirements for hot water supply and supplement of hot water to the ultrasonic washing segment are met. The comprehensive energy-saving device fully utilizes the waste heat resources of the dish-washing machine, reduces electric heating power, obviously reduces energy consumption of the dish-washing machine, achieves hot water cooling and hot air humidity reducing discharge and is simple in structure and easy to implement.

Description

technical field [0001] The invention relates to an ultrasonic dishwasher, in particular to a method and a device for recycling waste heat resources such as circulating water of the dishwasher, hot steam, hot exhaust air, etc. to heat the inlet water of the dishwasher, and belongs to the technical field of comprehensive energy utilization. Background technique [0002] Ultrasonic automatic dishwashers are widely used in canteens, restaurants, hotels and other places, with high washing efficiency and no special detergent required. Existing ultrasonic dishwashers generally include procedures such as ultrasonic washing, rinsing, cleaning, sterilizing and drying. In order to improve the ultrasonic cleaning effect and cleaning efficiency of the washed tableware, it is necessary to heat the inlet water of the dishwasher to above 45-50°C; the existing commercial dishwashers generally use electric heating to heat the inlet water to meet the requirements. water temperature. Therefor...

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Problems solved by technology

[0003] Existing fully automatic commercial ultrasonic dishwashers, such as the OBD-QJ230 and other series of fully automatic ultrasonic dishwashers that have a relatively high market share in the domestic tableware cleaning and disinfection equipment market, have not systematically recovered the waste heat discharged by the dishwasher. It not only leads to the high electric heating power of the dishwasher, but also increases the energy consumption of the equipment, and because the temperature of the hot water discharged from the dishwasher is high, and the hot air discharged from the disinfection and drying process has a large moisture content, resulting in a certain degree of pollution to the environment

[0004] China Invention Patent Application No. 201210254171.8, the application date is July 23, 2012, the name is "Hot water source energy-saving ultrasonic dishwasher and method for cleaning kitchen utensils with the device", and it is proposed that the hot water source enters the coil fan as a drying machine. The method of drying the heat source of the machine, but it does not involve the waste heat recovery method of the hot water and hot air discharged from the dishwasher and the specific device for heating the water inlet of the dishwasher

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