Method for controlling temperature of mechanical refrigerator in frequency conversion mode

Abstract

The invention relates to a method for controlling the temperature of a mechanical refrigerator in a frequency conversion mode. The method comprises the following steps of: (a), a control chip of the refrigerator partitions environment temperature and sets corresponding standard temperature; (b), the control chip of the refrigerator calculates temperature difference between the temperature of a refrigerating chamber and the standard temperature of a temperature interval in which the current environment temperature is positioned; (c), the control chip drives a compressor of the refrigerator to refrigerate the refrigerating chamber within preset time according to the temperature difference, and calculates the temperature difference between the environment temperature and the current temperature of the refrigerating chamber; (d), if the temperature difference is greater than corresponding preset temperature, the control chip repeats the step (c), and stops the running of the compressor until the temperature difference is smaller than or equal to the corresponding preset temperature; and (e), the control chip starts to execute from the step (b) at regular time. By the method, the mechanical refrigerator can be subjected to frequency conversion control according to the current temperature and has the effects of energy conservation, low noise, quick freezing and the like; and the rotation speed of the compressor of the refrigerator can be adjusted at any time, the temperature of the refrigerator can be controlled accurately, and the frequent starting and stopping of the compressor can be avoided.

Description

technical field [0001] The invention relates to a temperature control method for a refrigerator, in particular to a frequency conversion temperature control method for a mechanical refrigerator. Background technique [0002] The frequency conversion technology of refrigerators has achieved obvious effects in energy saving, low noise, quick freezing and other aspects, and has become an inevitable trend in the development of the refrigerator industry. Existing variable frequency refrigerator compressor speed is adjusted by detecting the difference between the temperature sensor temperature of the refrigerating room, the variable room, and the freezing room and the set temperature of each room. This control method can only be used on electronic temperature-controlled refrigerators. The start / stop of the mechanical refrigerator compressor is controlled by the on / off of the thermostat, and the temperature of the refrigerator and freezer cannot be detected and set, and the variabl...

AI Technical Summary

Problems solved by technology

The start / stop of the mechanical refrigerator compressor is controlled by the on / off of the thermostat, and the temperature of the refrigerator and freezer cannot be detected and set, and the variable speed control of the compressor cannot be performed.

The price difference between inverter refrigerators and mechanical refrigerators of the same volume is about 1,000 yuan. The huge price difference affects the popularization speed of inverter refrigerators

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