Dish-washing machine heat recovery device and method and dish-washing machine

Abstract

The invention relates to the field of household appliances, in particular to a dish-washing machine heat recovery device and method and a dish-washing machine. The dish-washing machine heat recovery device comprises an outer-side water tank and a heat exchange device arranged in the outer-side water tank and used for performing heat exchange with water in the outer-side water tank, a cold water inlet and a hot water outlet are formed in the outer-side water tank, and the outer-side water tank is communicated with an outside water source through a cold water inlet and is communicated with a dish-washing machine inner container through a hot water outlet. A water inlet for feeding water into the heat exchange device and a water outlet for discharging water of the heat exchange device are further formed in the outer-side water tank, the heat exchange device is communicated with the dish-washing machine inner container through the water inlet and is communicated with a water discharging pipe through the water outlet. The heat recovery device can recover hot water at a recovery washing stage, improves the water temperature of water used at a hot-rinsing stage in a heat exchange mode, further reduces a heating temperature point of the water used at the hot-rinsing stage, reduces power consumption and does not produce power consumption in the hot water recovery process at a washing stage.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a dishwasher heat recovery device and method, and a dishwasher. Background technique [0002] With the improvement of people's living standards and the advancement of science and technology, whether various consumer products are energy-saving, environmentally friendly and low-carbon has attracted more and more attention from consumers. The energy consumption value of products in the dishwasher industry has dropped repeatedly in recent years, and the innovation points of various brands focus on how to reduce power consumption. The main power consumption link of the dishwasher is the heating stage of the washing pump, mainly the main washing and heating and drying stages. Usually the power of the washing pump for dishwashers is 1200W-1800W. At present, the methods to reduce power consumption in the industry are mostly to adopt auxiliary solutions to reduce the heating time or l...

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Problems solved by technology

[0003] However, the existing solutions to reduce power consumption only reduce or reduce power consumption during the implementation process, rather than no power consumption. For example, if the fan is dry, the power consumption of the motor driving the fan is small, which reduces power consumption, but still generates power consumption.

At present, most of the products in the industry will directly drain the hot water (usually 55-65 degrees Celsius) of the main wash after the main wash is completed, but this part of the hot water for the main wash has not been recycled, thus wasting direct waste. The heat in the drained part of the hot water needs to be heated for the cold water during the final bleaching process, which increases power consumption and wastes energy

[0004] Based on the above description, there is an urgent need for a new dishwasher heat recovery device and method to solve the problems in the prior art that cold water needs to be heated during the bleaching process, which increases power consumption and wastes energy.

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