Heat pump and electric heater double-stage heating and heat regenerating type warm water, boiled water and hot water adjusting machine

Abstract

The invention relates to a heat pump and electric heater double-stage heating and heat regenerating type warm water, boiled water and hot water adjusting machine. The heat pump and electric heater double-stage heating and heat regenerating type warm water, boiled water and hot water adjusting machine has the advantages that a siphon circulating electric heating mode and a single-tank double heating mode are integrated to heat the boiled water at high efficiency and store the heat; the cold boiled water is prepared by high-efficiency heat regenerating circulating; the heat of the supplied water is absorbed by a semiconductor thermoelectric chip to prepare vegetable washing water, the heat of the cold boiled water is recovered to prepare ice boiled water, and the sensible heat of the boiled water is recovered to realize the stepped heating of the supplied water by the semiconductor thermoelectric chip and the electric heater; the mixing amount of the boiled water and the ice boiled water is adjusted by a drinking water temperature adjusting valve to prepare the warm boiled water; the mixing amount of the boiled water and the supplied water is adjusted by an automatic adjusting valve to prepare the hot water; the functions, such as the boiled water, the ice boiled water, the warm boiled water, the hot water and the vegetable washing water, are realized.

Description

(1) Technical field [0001] The invention relates to a heat pump and an electric heater double-stage heating back heat warming hot water conditioner. (2) Background technology [0002] Existing product has following deficiency: [0003] 1. Due to the low heating efficiency of the horizontally arranged heat storage electric water heater heating tank, on the one hand, it leads to slow static preheating, and the hot water needs to wait for a long time; on the other hand, the dynamic heating capacity is insufficient. The preheating and instant heating dual-mode electric water heater adopts dual heating tanks, the large heat storage tank undertakes the static preheating and heat storage mode, and the small outlet heating tank undertakes the dynamic instant heating mode; thus, the product cost is doubled without significantly improving The heating and heat storage efficiency of electric water heaters leads to excessive power consumption, which is not suitable for the distribution ...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the low heating efficiency of the heat storage electric water heater heating tank arranged horizontally, on the one hand, the static preheating is slow, and the hot water needs to wait for a long time; on the other hand, the dynamic heating capacity is insufficient

The preheating and instant heating dual-mode electric water heater adopts dual heating tanks, the large heat storage tank undertakes the static preheating and heat storage mode, and the small outlet heating tank undertakes the dynamic instant heating mode; thus, the product cost is doubled without significantly improving The heating and heat storage efficiency of electric water heaters leads to excessive power consumption, which is not suitable for the distribution requirements of Chinese households and limits its household penetration rate

[0004] 2. The existing direct drinking machine products form a heat recovery cycle of boiling water through a 15°C large temperature difference regenerator. High-power electric heaters not only increase investment but also increase the risk of product leakage; at the same time, the heating temperature cannot reach the sterilization temperature above 92°C stipulated by the national standard to meet the sanitary requirements of drinking water; the product sampling test results show that: even in the above In summer when the water temperature is as high as 30°C, the sterilization temperature is only about 85°C, which seriously affects the safety of drinking water.

[0006] 4. The existing water heater products control the mixing ratio between the hot water and the upper water in the heating tank through the automatic temperature regulating valve to keep the water temperature at the outlet of the water heater constant. However, due to the small heat storage capacity of the hot water, it is difficult to compete with the gas water heater in terms of water supply.

[0007] 5. The five commonly used functions of boiling water, iced boiling water, warm boiling water, hot water, and vegetable washing water that are widely required by each family need to be realized by multiple products, resulting in repeated investment and placement of various water appliances

[0008] 6. The electric water heater is only composed of an electric heating tube and a hot water tank, so it is simple to manufacture, low in cost, and high in reliability. However, the thermoelectric conversion is affected by the law of energy conservation and the heat preservation of the hot water tank, making its heating efficiency far lower than 1, which is This leads to excessive power consumption, insufficient heating capacity, and high requirements for power distribution; among them, the heating efficiency of the instant electric water heater is about 0.85-0.95, and the power consumption is 5-9kW; while the thermal storage electric water heater is due to Long holding time and large heat dissipation surface area lead to large heat loss, so although its power consumption is only 2-3kW, its cumulative heating efficiency is only 0.50-0.60

[0009] 7. The air source heat pump water heater makes full use of the scientific principle of the heat pump cycle. 1 part of electric energy drives the compressor to form a heat pump cycle. It absorbs 4 parts of low-grade heat from the environment through the evaporator, and is upgraded to 5 parts of high-grade heat by the heat pump cycle. , and then heat the hot water through the condenser to make the heating efficiency as high as 5; therefore, although the heating capacity is as high as 5-14kW, the power consumption is only 1-4.5kW, so the power saving effect is very obvious, and the household power distribution requirements are greatly reduced ; However, the heat pump circuit needs to be composed of refrigerant components such as compressors, condensers, throttle valves, and evaporators, while the heat storage and heat supply circuits are composed of water components such as circulating pumps, hot water tanks, and valves. Therefore, its manufacturing and installation are complex, costly to maintain, and less reliable

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