Sectional type additional heating device used for electronic direct cooling refrigerator

Abstract

The invention provides a sectional type additional heating device used for an electronic direct cooling refrigerator. The sectional type additional heating device used for the electronic direct cooling refrigerator comprises a first compensating heater fixedly arranged on a refrigerating chamber evaporator aluminum plate and a second compensating heater fixedly arranged on a refrigerating chamber inner container around a refrigerating chamber temperature sensor. As the refrigerating chamber evaporator and the periphery of the refrigerating chamber temperature sensor are heated at the same time, the temperature of the refrigerating chamber rises again integrally and uniformly; as the refrigerating chamber temperature sensor can sense temperature change of the refrigerating chamber in time and rapidly, the start and stop of a compressor can be controlled efficiently and reasonably even at the presence of a relatively low environmental temperature, the normal start-stop ratio of the compressor is realized, and consequently the use demands of a user can still be met at the presence of the relatively low environmental temperature.

Description

technical field [0001] The invention relates to the technical field of refrigerators, in particular to a segmented compensation heating device for an electronic direct cooling refrigerator. [0002] Background technique [0003] At present, refrigerators are roughly divided into mechanical refrigerators, electronic refrigerators and computer refrigerators. Among them, both mechanical refrigerators and electronic refrigerators belong to single-system refrigerators. When the ambient temperature is low, temperature compensation is realized by a compensation heater arranged on the evaporator of the refrigerator compartment. The mechanical refrigerator controls the start and stop of the compressor through the thermostat. The temperature-sensing capillary probe of the thermostat is set on the evaporator of the refrigerating chamber. The compensation heater heats the evaporator of the refrigerating chamber, which can quickly increase the local temperature of the probe end to achie...

AI Technical Summary

Problems solved by technology

[0004] For electronic direct-cooling refrigerators, since the refrigerating room evaporator is set at the back of the refrigerating room, and the refrigerating room temperature sensor is generally set on the side of the refrigerating room or other parts that are not in contact with the refrigerating room evaporator, this setting is because the refrigerating room evaporates The temperature of the refrigerator is relatively low. If the temperature sensor of the refrigerator is close to the evaporator of the refrigerator, it will not be able to detect a more accurate temperature of the refrigerator.

However, the compensation heater is set on the evaporator of the refrigerator. When the ambient temperature is low and the compensation heater is working, since the temperature of the refrigerator evaporator itself is low, it takes a certain time for the temperature to rise, and the temperature sensor of the refrigerator is far from the compensation heater. The temperature sensor in the refrigerating room is far away, so the temperature sensor in the refrigerating room cannot detect changes in the temperature of the refrigerating room in time, resulting in the main control board not being able to effectively control the start of the compressor. However, the temperature of the freezer will be too high due to the long-term non-refrigeration of the freezer, which cannot meet the user's temperature requirements for frozen food storage.

Images