Dish washing machine hot water/dining room air conditioner combined supply heat pump system

Abstract

The invention relates to the technical field of heat pumps, in particular to a heat pump system for combined supply of a kitchen dish washing machine and a dining room air conditioner. The system canprovide low-cost hot water for the kitchen dish washing machine, cold air or frozen water needed by the air conditioner is supplied to a dining room at the air conditioner season, treated exhaust airof the kitchen is utilized for being supplied to a heat pump in winter, and the energy efficiency of the heat pump is improved. According to the system, the power supply capacity of the dish washing machine is reduced by 60% or above, and the hot water heating cost is reduced by 70% or above compared with electric heating; and meanwhile, the free air conditioner can be achieved in the dining room,the kitchen exhaust air is utilized in winter for heat energy recycling, and meanwhile the energy efficiency of the heat pump is improved.

Description

technical field [0001] The invention relates to the technical field of heat pumps, in particular to a heat pump system used for joint supply of kitchen dishwashers and air conditioners in restaurants. Background technique [0002] With the increase in labor costs and the popularization of dishwasher technology, as well as people's higher and higher requirements for food hygiene and tableware cleaning, most unit canteens and public catering departments use dishwashers for cleaning and disinfection of tableware. In order to ensure the comfort of the restaurant in summer, the restaurant is equipped with cabinet air-conditioning units or central air-conditioning equipment. During the air-conditioning season, both dishwashers and air conditioners consume a lot of electricity. [0003] When the dishwasher is running, it needs to use hot water to wash the tableware. Generally, there are the following processes: 1. Pre-cleaning, hot water at 35-45 °C is required; 2. Main washing, h...

AI Technical Summary

Problems solved by technology

The operating cost is high and takes up a large power supply capacity, especially in the case of some large-scale schools with limited power supply capacity, the installation of dishwashers in the restaurant kitchen takes up a large power supply capacity, affecting other departments and student dormitories The installation and use of air conditioners

[0004] Since the heat energy of the air source heat pump hot water unit is taken from the air, its heating energy efficiency is greatly affected by the environment. Especially in the severe winter, the operation of the air source heat pump is affected by low temperature, low efficiency and frost, and the energy efficiency drops sharply. , even low temperature and high pressure protection, the unit cannot operate normally

However, in the severe cold season, the range hood and ventilator in the kitchen operate as usual, and the smoke and hot air generated in the kitchen are discharged outside, resulting in waste of heat energy

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