Ultralow-temperature variable-frequency cascade control system
A control system and ultra-low temperature technology, applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as unreasonable collocation, inefficient operation, low energy efficiency ratio, etc., to achieve the best operating effect and the best energy-saving effect Effect
Inactive Publication Date: 2021-09-24
西麦柯(广东)制冷科技股份有限公司
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Problems solved by technology
The matching of the existing cascade refrigeration system is unreasonable. When the high-temperature section is running, the first stage cannot hold down the second stage, resulting in inefficient operation and low energy efficiency ratio; and the control system of the unit is unstable and prone to failure
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Embodiment Construction
[0017] In order to make those skilled in the art better understand the technical solution of the present invention, the following in conjunction with the attached figure 1 The present invention is further analyzed.
[0018] Such as figure 1 As shown, an ultra-low temperature frequency conversion cascade control system is characterized in that it includes a first steam separator 1, a first-stage compressor 2, a first oil separator 3, a condenser 4, a first liquid storage tank 5, a plate exchange Heater 6, second oil separator 7, secondary compressor 8, second steam separator 9, expansion tank 10, air cooler 11, second liquid storage tank 12 and main control machine 13; the first steam separator The output end of the device 1 is connected with the input end of the first-stage compressor 2, and the first steam separator 1 is used to separate the moisture entrained in the steam, so as to improve the quality of the steam entering the first-stage compressor 2; The output end of th...
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The invention relates to an ultralow-temperature variable-frequency cascade control system. The ultralow-temperature variable-frequency cascade control system is characterized in that a first steam separator communicates with a first-stage compressor; the first-stage compressor communicates with a first oil separator; the first oil separator communicates with a condenser; the condenser communicates with a first liquid storage tank; the first liquid storage tank communicates with a plate heat exchanger and the first steam separator; a second steam separator communicates with a second-stage compressor and an expansion tank; the second stage compressor communicates with a second oil separator; the second oil separator communicated with the plate heat exchanger and the expansion tank; the plate heat exchanger communicated with the first steam separator and a second liquid storage tank; the second liquid storage tank communicates with an air cooler and the secondary compressor; the air cooler communicates with the second steam separator; a main control machine is electrically connected with the first-stage compressor and the plate heat exchanger. According to the system, a frequency conversion control technology is added, a CPU operation center carries out comprehensive control, tracks and controls the operation of each module in real time, automatically adjusts and perfects the operation parameters, and achieves the optimal operation effect and energy-saving effect.
Description
technical field [0001] The invention relates to an ultra-low temperature variable frequency cascade control system, which belongs to the technical field of ultra-low temperature refrigerators. Background technique [0002] In the prior art, refrigerating units are currently divided into two types: single system and cascade refrigerating system. When ultra-low temperature is required, the cascade refrigerating system is often used. Cascade refrigeration system is widely used in commercial food or pharmaceutical processing, transportation, storage and other fields, and plays an important role in food preservation and pharmaceutical quality preservation, such as shopping supermarkets, pharmaceutical companies, marine fishing, etc. The matching of the existing cascade refrigeration system is unreasonable. When the high-temperature section is running, the first stage cannot hold down the second stage, resulting in inefficient operation and low energy efficiency ratio; and the con...
Claims
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IPC IPC(8): F25B7/00F25B49/02
CPCF25B7/00F25B49/02F25B2600/021
Inventor 黄昌强
Owner 西麦柯(广东)制冷科技股份有限公司