Household variable frequency direct heating air energy heat pump water heater

Abstract

The invention discloses a household variable frequency direct heating air energy heat pump water heater. The water heater comprises a compressor, a four-way valve, a plate heat exchanger, an insulation water tank, a circulating water pump, a liquid accumulator, a fin evaporator, a fan, a water outlet pipe and a water inlet pipe; a water feeding port, a circulating inlet and a circulating outlet communicating into the insulation water tank are formed in the outer wall of the insulation water tank in sequence from bottom to top; a second temperature probe is arranged in the insulation water tank; and the plate heat exchanger is provided with a first upper port, a first lower port, a second upper port and a second lower port. In the water heater, a proportional three-way valve is used for water mixing adjustment of water inlet temperature, so that the temperature change difference is equal to the actual demanded temperature difference, the energy consumption demand is low, and the energyconservation effect is excellent; and through lowering of the water inlet and outlet average temperature, the unit condensation temperature is lowered, the product refrigeration efficiency is improved, the energy conservation is improved, the product cost is reduced, and products are accepted by the market easily and achieve certain market competitiveness.

Description

technical field [0001] The invention relates to the technical field of air energy heat pump water heaters, in particular to a household frequency conversion direct heating air energy heat pump water heater. Background technique [0002] Air energy heat pump water heaters are also called "air source heat pump water heaters", "heat pump water heaters", "air energy water heaters" and so on. The heat pump in the air energy heat pump water heater can absorb the low-temperature heat energy in the air, and convert it into high-temperature heat energy after being compressed by the compressor to heat the water temperature. This kind of water heater (air source heat pump water heater) has the characteristics of high efficiency and energy saving, and its power consumption is 1 / 4 of the electric water heater of the same capacity, and 1 / 3 of the gas water heater. [0003] Existing air energy heat pump technology, 1. Based on the water tank heat storage type, in order to maintain the wat...

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Problems solved by technology

[0003] Existing air energy heat pump technology, 1. Based on the water tank heat storage type, in order to maintain the water temperature, the water temperature section of the long-term operation of the unit is a high water temperature section, and the energy saving effect is poor; Instant heat energy requires a very large unit and high cost; 3. Because the air energy relies on the Carnot cycle of the compressor to produce heat, the compressor cannot be turned on and off immediately, and the conventional fixed-speed compressor It is impossible to accurately adjust the user's calorie demand

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