Multi-evaporator heat pump capable of achieving self defrosting and continuous heating and control method thereof
A technology for evaporators and heat pumps, which is applied in the field of multi-evaporator heat pumps and their control, can solve the problems of large influence, affecting the service life of pipelines, affecting heating effects, etc., and achieve the effect of stable system operation
Pending Publication Date: 2019-11-05
北京四季通能源科技有限公司
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Problems solved by technology
Stopping heating will affect the heating effect, especially for the use of fan coil units as the heating end. At the same time, the pipelines of the heat pump system are constantly subjected to cold and heat shocks.
Affect the service life of the pipeline
Method used
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Embodiment Construction
[0027] The present invention will be further described below in conjunction with the accompanying drawings, but not as a limitation of the present invention.
[0028] see figure 1 , a multi-evaporator heat pump for continuous heating from defrosting, comprising an evaporator, a compressor 1, a condenser 2, a first expansion valve 9 and a second expansion valve 8;
[0029] There are more than two evaporators, and more than two evaporators are connected in parallel;
[0030] The evaporator includes a first evaporator 3, a second evaporator 4 and a third evaporator 5;
[0031] The outlet of the compressor 1 is connected to the first valve 6, the first valve 6 is connected to the inlet of the condenser 2 through the first pipeline 22, the outlet of the condenser 2 is connected to the first expansion valve 9 through the second pipeline 23, and the first expansion valve 9 passes through The third pipe 24 is connected to the first inlet valve 13 of the first evaporator, the first i...
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The invention discloses a multi-evaporator heat pump capable of achieving self defrosting and continuous heating and a control method thereof. The multi-evaporator heat pump comprises two or more evaporators connected in parallel. An outlet of a compressor is sequentially connected with a first valve, a first pipeline, a condenser, a second pipeline, a first expansion valve, a third pipeline and evaporator first inlet valves. The evaporator first inlet valves are connected with inlets of the evaporators. Outlets of the evaporators are sequentially connected evaporator first outlet valves, a fourth pipeline, a gas and liquid separator and an inlet of the compressor. The fourth pipeline is connected with a fifth pipeline. The fifth pipeline is connected with an inlet of the condenser througha second valve. The outlet of the compressor is connected with a sixth pipeline. The sixth pipeline is connected with evaporator second inlet valves which are connected with the inlets of the evaporators. The outlets of the evaporators are connected with evaporator second outlet valves which are connected with a second expansion valve through a seventh pipeline. The second expansion valve is connected with an outlet of the condenser. The multi-evaporator heat pump can achieve continuous heating and self defrosting.
Description
technical field [0001] The invention relates to the application field of heat pumps, in particular to a multi-evaporator heat pump for self-defrosting continuous heat supply and a control method thereof. Background technique [0002] At present, the basic functions of heat pumps on the market can realize heating and cooling, and can be used for heating in winter and cooling in summer. During the heating process, the evaporator must be defrosted. In the existing heat pump structure, the heat pump needs to stop heating during defrosting to perform defrosting. Stopping heating will affect the heating effect, especially for the use of fan coil units as the heating end. At the same time, the pipelines of the heat pump system are constantly impacted by cold and heat. affect the service life of the pipeline. Contents of the invention [0003] In order to solve the deficiencies in the prior art, the present invention provides a multi-evaporator heat pump capable of continuous he...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F25B5/02F25B41/06F25B47/02F25B41/20F25B41/31
CPCF25B5/02F25B47/022F25B2347/021F25B41/31
Inventor 李继民朱宁武赏磊
Owner 北京四季通能源科技有限公司