Indoor air source heat pump water heater

Abstract

The indoor air source heat pump water heater is a kind of hot water supplier with air as heat source. The present invention has evaporator installed in the air inlet of the air exchanging fan to exhaust air outdoor and contacting closely to the air exchanging fan; compressor, throttle unit and drying filter installed below water reservoir and connected to the lower opening of the condensator inside the water reservoir. The present invention has the advantages of stable heat pump work state, easy regulation of the throttle unit, high efficiency of the heat pump, no frosting in the evaporator, compact structure, small volume, low noise, etc.

Description

technical field [0001] The invention relates to an energy-saving heat supply device in the fields of thermodynamics and heat transfer, in particular to an air-source heat pump water heater using air as a heat source. Background technique [0002] The existing air source heat pump water heater is mainly composed of a compressor, a condenser, a throttling device, an evaporator, and a fan. The compressor, evaporator, and throttling device are generally installed outdoors, and the fan evaporator absorbs the outdoor air. Therefore, the following problems will arise: because the outdoor climate changes greatly throughout the year, the adjustment of the working condition of the air source heat pump is complicated; especially when the temperature is low, the thermal efficiency of the air source heat pump is reduced; when the temperature of the atmosphere When the humidity is low and the humidity is high, the evaporator is severely frosted, and a defrosting device must be installed, ...

AI Technical Summary

Problems solved by technology

[0002] The existing air source heat pump water heater is mainly composed of a compressor, a condenser, a throttling device, an evaporator, and a fan. The compressor, evaporator, and throttling device are generally installed outdoors, and the fan evaporator absorbs the outdoor air. Therefore, the following problems will arise: because the outdoor climate changes greatly throughout the year, the adjustment of the working condition of the air source heat pump is complicated; especially when the temperature is low, the thermal efficiency of the air source heat pump is reduced; when the temperature of the atmosphere When the humidity is low and the humidity is high, the evaporator is severely frosted, and a defrosting device must be installed, which will cause a complex structure and a significant drop in heat pump output

In addition, installing components such as compressors, evaporators, and throttling devices outdoors also adds trouble to the building facade.

[0003] The prior art discloses an air source heat pump water heater that integrates a compressor, a throttling device, and a condenser. The condenser is placed in a water storage tank with a coil structure, but the compressor, throttling device and other components It is placed on the condenser. This structure will make it difficult for the condenser to return oil, so that the compressor will be overheated due to lack of oil, or even destroyed.

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