Single-supply heating type screw air source heat pump

Abstract

The invention discloses a single-supply heating type screw air source heat pump. The single-supply heating type screw air source heat pump comprises a case, wherein a double-screw type compressor, a first condenser, a second condenser, an expansion valve, a gas-liquid separator, a filter, a liquid storage tank, a heat preservation water tank, a water inlet and a water outlet are arranged in the case; an evaporator is arranged outside the case; the water inlet communicates with the heat preservation water tank through the second condenser and the first condenser in sequence; the lower part of the heat preservation water tank communicates with the water outlet; the double-screw type compressor communicates with the double-screw type compressor to form a circulation loop after sequentially passing through the first condenser and the second condenser, and then communicating with the expansion valve, the evaporator, the gas-liquid separator, the filter and the liquid storage tank in sequence; and a gas outlet of the gas-liquid separator communicates with the double-screw type compressor. The air source heat pump is an all-in-one design and is good in heating effect, high in working efficiency, efficient, energy-saving, small in vibration, low in noise, not prone to icing and frosting, and long in service life.

Description

technical field [0001] The invention relates to the technical field of heat pumps, in particular to a heating-only screw air source heat pump. Background technique [0002] The air source heat pump is an energy-saving device that uses high-level energy to make heat flow from low-level heat source air to high-level heat source. It is a form of heat pump. As the name implies, a heat pump is like a pump, which can convert low-level thermal energy that cannot be directly used (such as the heat contained in air, soil, and water) into high-level thermal energy that can be used, thereby saving some high-level energy (such as coal, gas, oil, etc.) , electricity, etc.) purpose. [0003] As an energy-saving and environment-friendly heating system, air source heat pump has been widely used in different heating places. Air source heat pump compressors are currently mainly divided into three types: centrifugal type, scroll type and screw type, and the application occasions are differe...

AI Technical Summary

Problems solved by technology

[0006] The heating effect is not good, resulting in low outlet water temperature (especially in low-temperature environment), high noise, and freezing of circulating water pump during intermittent operation; and most of the existing household integrated air source heat pumps are fixed. It is inconvenient to move. Some household integrated air source heat pumps have rollers. However, after the water tank in the household integrated air source heat pump is filled with water, there will be a lot of pressure on the rollers. Long-term use in this way will shorten the service life of the rollers. It is greatly reduced. After the roller is damaged, the household integrated air source heat pump may be dumped, which poses a safety hazard.

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