Highly effective natural energy heat pump

Abstract

The present invention discloses a highly-effective natural energy heat pump, belonging to the heat pump application technical field. A refrigerant closed circulation system is formed by connected refrigerant channels such as a compressor (1), an indoor heat exchanger (2), a throttling device (3) and an outdoor heat exchanger (4), etc., and is controlled by an electric control device (5). The heat pump is characterized in that: a flow splitting device (6) is connected with a control valve (7) in series; the indoor heat exchanger (2) is divided into at least two refrigerant output channels through the flow splitting device (6), wherein at least one channel is connected with the throttling device (3); and at least the other channel in which the flow can be controlled by the control valve (7), is connected with an inlet of at least one natural energy heat exchanger (8). The outlet of the natural energy heat exchanger (8) is connected with the throttling device (3), and the inlet of the natural energy heat exchanger (8) is further connected with an inlet of an air returning valve (9). The outlet of the air returning valve (9) is connected with an air returning pipeline. The heat pump is capable of using natural energy to effectively and quickly heat, reducing frost, preventing the compressor (1) from oil deficiency, liquid impact and high-temperature high pressure damages. The heat pump is long in service life and wide in application range.

Description

Technical field [0001] The invention relates to a heat pump system, in particular to a high-efficiency natural energy heat pump, which belongs to the technical field of heat pump applications. Background technique [0002] Heat pumps have obvious energy-saving advantages because their heating energy efficiency ratio is always greater than 1, and they have been vigorously promoted and applied in modern society where energy is scarce. After the refrigerant enters the condenser, it releases heating heat and condenses into a medium-temperature and medium-pressure liquid refrigerant, which is then decompressed into a low-temperature and low-pressure refrigerant through the throttling device, then flows into the evaporator to absorb heat energy, and finally returns to the compressor to complete the cycle . When the ambient temperature of the condenser is low, it is easy to cause insufficient refrigerant quantity of the system evaporator, too low return air pressure, too little re...

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Problems solved by technology

When the ambient temperature of the condenser is low, it is easy to cause insufficient refrigerant quantity of the system evaporator, too low return air pressure, too little return air and oil return of the compressor, and excessive exhaust temperature due to excessive stagnant liquid in the condenser. In addition, although the relative heating energy efficiency is relatively high at this time, due to the small amount of refrigerant sucked into the compressor, the compressor is in a light-load working state, the heating power of the heat pump is not easy to exert, and the heating speed is not ideal; when the condenser When the ambient temperature is high, it is easy to cause adverse phenomena such as excessive refrigerant quantity of the system evaporator, excessive return gas and exhaust pressure due to insufficient condensation and liquefaction of the high-temperature gaseous refrigerant, and, although the compressor is working under heavy load at this time The relative input power is relatively high, but due to the high condensing temperature and low heat absorption capacity of refrigerant evaporation, the heating power of the heat pump is also low, and the heating speed is also slow. Furthermore, the heating energy efficiency of the heat pump is relatively Low, the system is unstable

Under the existing conventional technology, the actual use effect and actual service life of the heat pump are not fully satisfactory, which also greatly limits the popularization and application of this new generation of energy-saving and environmentally friendly products. Methods to alleviate the above shortcomings of heat pumps, but the results are not ideal

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