Device and method for improving energy efficiency of refrigeration system
A refrigeration system and energy efficiency technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as low energy efficiency, precise control of refrigeration systems, and failure to consider piping, etc., to facilitate maintenance. and maintenance effect
Inactive Publication Date: 2017-12-26
SICHUAN CHANGHONG ELECTRIC CO LTD
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Problems solved by technology
However, this adjustment method does not take into account the impact of the actual length of the pipeline on the system, nor does it accurately control the compressor of the refrigeration system to operate under the best energy efficiency ratio according to the length of the pipeline, resulting in low energy efficiency in the air conditioner or multi-connected system
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[0030] The present invention will be further described below in conjunction with specific examples.
[0031] In order to enable the compressor to operate under the optimal driving curve, it is necessary to modify the driving frequency according to the indoor and outdoor temperature difference, or the outdoor temperature or the indoor temperature. However, the operating frequency of the current compressor is controlled based on the temperature value of the indoor coil as an input, and the operating frequency of the compressor cannot be adjusted or corrected according to changes in the external ambient temperature. Moreover, when the pipeline changes, the impact of the actual length of the pipeline on the system is not considered, and the compressor of the refrigeration system is not accurately controlled according to the length of the pipeline to operate under the best energy efficiency ratio, resulting in air conditioners or multi-line The energy efficiency in the system is no...
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The invention discloses a device for improving the energy efficiency of a refrigeration system. The device comprises an evaporator, a condenser, a compressor, an electric control part and a sensor device, and further comprises a timer device, a refrigerant flowing speed detecting device and a refrigeration power driving module; the sensor device is used for detecting the temperature; the timer device records the starting time and the circulating period of the refrigeration system; the refrigerant flowing speed detecting device detects the refrigerant flowing speed to calculate the pipeline length; the refrigeration power driving module drives the compressor of the refrigeration system to operate based on the indoor coil temperature value and the outdoor temperature and / or indoor temperature input quantity; and the compressor operation frequency is driven based on the driving frequency under the driving curve with optimal outdoor temperature difference. The invention further provides a method for improving the energy efficiency of the refrigeration system. The pipeline length of the refrigeration system can be calculated more accurately; and the proper refrigerant number is determined according to the pipeline length, so that the refrigeration system is conveniently maintained.
Description
technical field [0001] The invention relates to a device and a method for improving the energy efficiency of an air-conditioning and refrigeration system, in particular to a device and a method for improving the refrigeration energy efficiency of multiple indoor unit units, and belongs to the technical field of air-conditioning. Background technique [0002] As refrigeration or heating equipment, air conditioners have become a part of people’s lives, improving the comfort of people’s lives. However, the refrigerant in the air conditioner is fixed. If the length of the pipeline changes during flow, it cannot be adjusted to the optimum level accordingly. Driving under the best driving energy efficiency will consume more electric energy, and the desired effect cannot be achieved. [0003] At present, the multi-connected air conditioners on the market adopt a new technical solution to prevent the refrigerant from drifting when cooling and heating, so as to improve the cooling an...
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IPC IPC(8): F24F11/00
Inventor 阳丹刘东高向军李越峰吴南理
Owner SICHUAN CHANGHONG ELECTRIC CO LTD