Instant-on air energy heat pump water heater and control method thereof

Abstract

The invention discloses an instant air energy heat-pump water heater. The instant air energy heat-pump water heater comprises a shell, a refrigerant circulation circuit and a water tank, wherein the refrigerant circulation circuit and the water tank are arranged in the shell. The refrigerant circulation circuit comprises a compressor, a condenser, a throttling device and an evaporator, wherein the compressor, the condenser, the throttling device and the evaporator are connected with one another through pipelines in sequence to form a circuit. The condenser is arranged in the water tank. The water heater further comprises water way pipeline parts connected with the water tank. The water way pipeline parts include a water inlet pipeline and a water outlet pipeline. An electrical heating module and a water flow regulating valve are arranged on the water outlet pipeline. The compressor, the electrical heating module and the water flow regulating valve are connected with a control module. The control module carries out comprehensive judgment according to the water temperature and controls the working mode of the compressor, the working mode of the electrical heating module and the working mode of the water flow regulating valve. The instant air energy heat-pump water heater is provided with the built-in small-capacity water tank, the installation space is saved, connecting pipes are reduced, and the probability of leakage is reduced; the water heater is instant and convenient to use, and can supply water at constant temperature.

Description

technical field [0001] The invention relates to the field of air energy heat pump water heaters, in particular to an instant-on and ready-to-use air energy heat pump water heater and a control method thereof. Background technique [0002] Traditional air source heat pump water heaters are generally composed of two parts, one is the host part, and the other is the water tank part; for household water tanks, 1. The capacity is generally 150-320L, and the water tank is huge, and it needs to occupy a large part of the installation. Even if some water tanks are installed outside the wall with brackets, due to the weight of water added to the water tank itself, this type of installation is quite dangerous. 2. The material and process used in the inner tank of the water tank, whether it is a stainless steel inner tank or an enamel inner tank, due to defects in the manufacturing process, it is inevitable that the water tank leaks; 3. The heat exchanger inside the water tank generall...

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Problems solved by technology

[0002] The traditional air energy heat pump water heater is generally composed of two parts, one is the host part, and the other is the water tank part; for household water tanks, 1. The capacity is generally 150-320L, and the water tank is huge, and it needs to occupy a large part of the installation. The building area, even if some water tanks are installed outside the wall with brackets, due to the weight of the water tank itself, this type of installation is quite dangerous

2. The material and process used in the inner tank of the water tank, whether it is a stainless steel inner tank or an enamel inner tank, due to defects in the manufacturing process, water tank leakage is unavoidable; 3. The heat exchanger inside the water tank is generally made of copper tubes or stainless steel In areas with poor water quality, the heat exchange tubes will be corroded and perforated, resulting in refrigerant leakage. Once a leak occurs, it will be fatal to the unit; Avoid artificial leakage of refrigerant during installation; 5. Due to the characteristics of water storage heat pumps, the water temperature needs to be raised to a higher temperature, and it takes a long time, which cannot meet the immediate water requirements, and the water temperature fluctuates in the later stage of water use Larger, which affects the comfort of use; in addition, the condensing temperature determines the energy consumption of the unit. The traditional unit with water tank operates at high condensing temperature and high condensing pressure for a long time, which will be a big test for the life of the compressor. ;6. The water storage type water tank is used, and the water generally needs to be mixed when using water. This will cause several problems. 1) The hot water usage rate in the water tank is not high; 2) During the heat preservation process of the water tank, the water temperature will inevitably appear. 3) When the user installs a water valve at home, it is necessary to install a water mixing valve, which increases the cost of materials

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