Control system and control method for frostless refrigerator heater

A control system and defrosting heater technology, applied in lighting and heating equipment, household refrigeration equipment, household appliances, etc., can solve the problems of high cost, difficult verification of single-chip software, long time, etc., and achieve the effect of avoiding high temperature
CN102261809BInactive Publication Date: 2013-03-20HISENSE RONGSHENG YANGZHOU REFRIGERATOR CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
HISENSE RONGSHENG YANGZHOU REFRIGERATOR CO LTD
Publication Date
2013-03-20
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to a control system and control method for a frostless refrigerator heater. The control system for the frostless refrigerator heater comprises a singlechip processor, as well as a refrigerating chamber temperature sensor, a freezing chamber temperature sensor, a defrosting temperature sensor and a door switching signal which are respectively connected with the singlechip processor, wherein the singlechip processor is respectively connected with a compressor, a fan motor, a defrosting heater and an electric air door through driving circuits; the control system also comprises a temperature control circuit which is connected between the driving circuits of the defrosting temperature sensor and the defrosting heater. According to the invention, by additional arrangement of the temperature control circuit, the function of controlling the defrosting heater by hardware circuits can be achieved, namely, no matter what status the single chip processor is in, the defrosting heater can be forced to power off when the temperature of the defrosting temperature sensor RV is too high, thus the safety performance of the product can be improved and the requirement of the safety standard can be satisfied.
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Description

technical field

[0001] The invention belongs to the technical field of electrical equipment, and in particular relates to a control system and a control method for a frost-free refrigerator heater. Background technique

[0002] The evaporator of the refrigerator will accumulate frost on the surface after cooling for a period of time. If the frost layer is too thick, the heat exchange will deteriorate and the cooling performance will deteriorate. Therefore, the frost accumulation on the surface of the evaporator should be removed to ensure the performance of the refrigerator. The advantage of a frost-free refrigerator is that it can defrost automatically, and does not require the user to remove the frost accumulated on the surface of the evaporator. The control system of the frost-free refrigerator includes an automatic frosting process. During the defrosting process, the defrosting heater is energized and heated to remove the frost on the evaporator.

[0003] Most of the cu...

Claims

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