Refrigeration control method for a refrigerator

Abstract

The invention discloses a refrigeration control method for a refrigerator and relates to the technical field of refrigerators. The present invention includes step 1: setting the first supercooling threshold of the refrigerating chamber as Δr1, the second supercooling threshold as Δr2, and the third supercooling threshold as Δr'; setting the first superheating threshold of the freezing chamber as Δf and the second The overheating threshold is Δf'; Step 2: Detect whether the compressor is in the power-on state, and in the power-on state, compare the real-time temperature values ​​Tr_air and Tr_cut out-Δr1 and Tr_cut out-Δr2 of the refrigerator compartment, and the real-time temperature values ​​Tf_air and Tf_cut out of the freezer compartment +Δf for comparison; when the compressor is stopped, compare Tr_air with Tr_cut out‑Δr' and Tf_air with Tf_cut in+Δf' in step 3 to determine the main and auxiliary sequence of compressor control. In the present invention, by setting the first supercooling threshold of the refrigerating room as Δr1, the second supercooling threshold as Δr2, and the third supercooling threshold as Δr', the multivariable parallel control of the compressor is adjusted to control mainly in the refrigerating room, and freezing Complemented by room control, it solves the problem that the existing cold room is easy to over-cool and freeze food.

Description

technical field [0001] The invention belongs to the technical field of refrigerators, and in particular relates to a refrigerator refrigeration control method. Background technique [0002] At present, the control method of the compressor of the refrigerating and freezing refrigerator is generally as follows: when any room of the refrigerating room or the freezing room has a cooling demand, the compressor is turned on, and the refrigeration system starts to work to provide cooling capacity. When the cooling demands of both the refrigerator and the freezer are met, that is, at the shutdown point temperature, the compressor is turned off and the refrigeration system stops working. [0003] Since the shutdown condition of the compressor involves two or more variables of refrigeration temperature and freezing temperature, it is difficult to achieve multiple variables meeting the preset conditions at the same time. Therefore, damper switches are generally used to distribute the c...

AI Technical Summary

Problems solved by technology

[0004] However, in the actual application process, the damper or electromagnetic valve often fails, which leads to uncontrolled refrigeration in the refrigerator, excessive cooling, and frozen food.

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