Exhaust superheat degree control method of refrigerating and heat pump unit
A technology of exhaust superheat and heat pump units, which is applied in the direction of refrigerators, refrigeration components, refrigeration safety arrangements, etc., can solve the problems of high cost and expensive pressure sensors, and achieve the effect of reducing control costs and ensuring safe operation
Inactive Publication Date: 2018-06-15
韩军
14 Cites 4 Cited by
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The invention discloses an exhaust superheat degree control method of a refrigerating and heat pump unit. The exhaust superheat degree control method of the refrigerating and heat pump unit comprisesthe following steps that S1, the exhaust temperature of a compressor is collected through an exhaust temperature sensor; S2, the temperature at an air inlet (or a liquid outlet pipe) when an air heatexchanger serves as a condenser or the outlet water temperature when a water-cooling heat exchanger serves as a condenser are measured; S3, the environment temperature corrected value or the water temperature corrected value is calculated; S4, a controller collects the temperatures in the S1, S2 and S3 and calculates the exhaust superheat degree. After the unit runs and goes into a normal state, the controller judges the size relation between the exhaust superheat degree and an exhaust superheat threshold value, and if the exhaust superheat degree is larger than or equal to the exhaust superheat threshold value, the unit is within a safety range; and if the exhaust superheat degree is smaller than the exhaust superheat threshold value, a failure code is reported. According to the exhaust superheat degree control method of the refrigerating and heat pump unit, the exhaust superheat degree can be calculated on the basis that the controller and the sensor are not additionally arranged, and it is guaranteed that the unit safely runs.
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Property | Measurement | Unit |
Heat transfer area | 70.0 | m² |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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