Air source heat pump hot water units

Abstract

The invention discloses an air supply heat pump hot water assembly. The key points of the invention mainly are that at least two compressors are connected in parallel; a first temperature sensor, a pressure sensor and a first controller are also connected in parallel; a first control circuit which compares the temperature signal measured by the first temperature sensor with a set value of environment temperature and leads the corresponding compressor to enter an on state according to the comparison result is arranged on the first controller, and a second control circuit which compares the pressure signal measured by the pressure sensor with a set value of pressure and controls the rotate speed of a fan according to the comparison result is also arranged on the first controller. The invention fundamentally solves the problem that the hot water quantity required by users is not matched with the heating capacity of the assembly when running in winter and summer, and the invention can guarantee the safe and reliable running of the compressor through changing the air flow of the fan. Furthermore, the invention additionally adopts a connecting air channel and a cold water circulation device to recycle the cooling energy wasted before, so as to enhance the utilization rate of the hot water assembly and reduce the energy cost of users.

Description

technical field [0001] The invention relates to the technical field of air source heat pumps, in particular to a hot water unit that uses an air source heat pump to produce hot water. Background technique [0002] Air source heat pump is a kind of equipment that can obtain low-grade heat energy from natural air, do work through electricity, and output high-grade heat energy that can be used. Its work adopts the principle of Carnot cycle. The specific working process is: after the compressor works, the gaseous refrigerant of high temperature and high pressure is discharged; the gaseous refrigerant of high temperature and high pressure enters the condenser through the four-way valve to release heat, and then becomes medium temperature and high pressure. Liquid; the medium-temperature and high-pressure liquid refrigerant is throttled and depressurized by the drying filter, sight glass and expansion valve, and becomes a low-temperature and low-pressure liquid, and then passes th...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an air source heat pump hot water unit to solve the problem that the amount of hot water required by the user does not match the heating capacity of the unit during winter and summer operation. The hot water unit has high thermal efficiency, Low cost of use, safe and reliable operation

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