An air source heat pump
An air source heat pump and heat circuit technology, which is applied in the directions of space heating and ventilation, space heating and ventilation details, heating methods, etc. temperature, system cooling performance degradation, etc.
Active Publication Date: 2022-02-08
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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Problems solved by technology
[0004] In addition, in a multi-connected system with long online piping, if the refrigerant at the outlet of the outdoor heat exchanger does not have sufficient subcooling degree, a certain amount of evaporation will occur due to the loss of pipeline pressure drop, causing the refrigerant to flow in the indoor throttling element. The former is a two-phase state, which affects the reliability of the throttling element on the one hand, and increases the dryness of the refrigerant at the inlet of the heat exchanger of the indoor unit on the other hand, resulting in a decrease in the cooling performance of the system
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0026] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "top", "bottom", "inner", "outer" etc. Orientation or positional relationship is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific or...
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The invention discloses an air source heat pump. A performance auxiliary pipeline is connected in series on a heat exchange circuit, and a bypass pipeline is connected in parallel with the performance auxiliary pipeline. One end of the performance auxiliary pipeline is connected with the indoor heat exchanger, and the other end is connected with the outdoor heat exchanger, and the performance auxiliary pipeline is arranged at the bottom of the outdoor heat exchanger. A control valve is provided on the bypass pipeline. When heating, the control valve is opened, part of the heat exchange medium flowing out of the indoor heat exchanger flows through the performance auxiliary pipeline, and the other part flows through the bypass pipeline, and the two heat exchange mediums merge and then flow together to the outdoor heat exchanger. When cooling, the control valve is closed, and all the heat exchange medium flowing out of the outdoor heat exchanger flows to the indoor heat exchanger through the performance auxiliary pipeline. The setting of the performance auxiliary pipeline and the bypass pipeline can increase the subcooling degree during cooling and improve the cooling capacity of the air source heat pump; during heating, it can prevent frosting and freezing at the bottom of the outdoor heat exchanger, and reduce heat waste at the same time. Improve the heating capacity and energy efficiency of air source heat pumps.
Description
technical field [0001] The invention relates to the technical field of air conditioning equipment, in particular to an 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. Air source heat pump is a form of heat pump. As the name suggests, heat pump is like a pump, which can convert low-level heat energy (such as heat contained in air, soil, and water) that cannot be directly used into high-level heat energy that can be used, so as to save energy. The purpose of some high-level energy (such as coal, gas, oil, electric energy, etc.). [0003] When the air source heat pump is applied, when the ambient temperature and humidity reach certain conditions, frost will form on the air side of the outdoor heat exchanger. However, the wind field distribution on the surface of the outdoor heat exchanger is uneven, and the wind speed ...
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IPC IPC(8): F24F5/00F24F11/42F24F11/61F24F11/64F24F11/65F24F11/84F24F13/22F24F13/30F25B13/00F25B41/20F25B41/34F25B41/37F25B47/02F24F140/20F24F110/12
CPCF24F5/001F24F11/84F24F11/42F24F11/61F24F11/64F24F11/65F24F13/30F24F13/222F25B13/00F25B47/025F24F2140/20F24F2110/12
Inventor 董辰张恒唐亚洲
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST