Heat-pump air-conditioning system, heat-pump air-conditioner, control method thereof, and storage medium

Abstract

The invention discloses a heat pump air conditioning system, comprising a compressor, a four-way valve, an indoor heat exchanger, a first throttling device and a first outdoor heat exchanger which aresequentially connected. The heat pump air conditioning system also comprising a second outdoor heat exchanger and a second throttling device, the second outdoor heat exchanger has a first flow path and a second flow path, the first flow path of the second outdoor heat exchanger communicates with a part between the indoor heat exchanger and the first throttling device, the entry end of the first flow path is connected with the indoor heat exchanger, and the exit end of the first flow path is connected with the first throttling device, the second flow path of the second outdoor heat exchanger communicates with a part between the indoor heat exchanger and the compressor, the entry end of the second flow path is connected with the indoor heat exchanger, and the exit end of the second flow path is connected with the injection orifice of the compressor. The invention also provides a heat pump air conditioner, a control method thereof, and a storage medium. The invention improves the enthalpy difference of the first outdoor heat exchanger and the refrigerant circulation mass at the low temperature of the system, thus improving the heating capacity of the system.

Description

Technical field [0001] The present invention relates to the technical field of air conditioners, in particular to a heat pump air conditioning system, a heat pump air conditioner, a control method thereof, and a storage medium. Background technique [0002] With the inclusion of air source heat pumps in the category of renewable energy in my country, the production of heat pump air conditioners by air-conditioning companies is also increasing. As a highly efficient, energy-saving, and convenient air conditioning device, heat pump air conditioners play an important role in people’s daily production and life. Therefore, improving the low temperature heating capacity of heat pump air conditioners will inevitably become a way for air conditioning companies to enhance their product capabilities. Important support point. [0003] Existing household heat pump air conditioners mainly use air-cooled condensers. When the heat pump air conditioners are used in an environment where the outdoo...

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a heat pump air-conditioning system, a heat pump air conditioner and its control method, and a storage medium, aiming to solve the problem of low heating performance coefficient and low heat energy utilization rate in the existing heat pump air-conditioning system, resulting in insufficient low-temperature heating energy question

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