A treatment method and device for refrigerator probe failure

A processing method and refrigerator technology, which is applied to household refrigeration devices, lighting and heating equipment, household appliances, etc., and can solve the problems of easy aging of connectors, failure of the entire refrigerator to operate normally, disconnection of connecting wires of sensor temperature sensing devices, etc. question

CN103727736BActive Publication Date: 2016-03-09HANGZHOU HUARI HOUSEHOLD APPLIANCE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-03-09

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Abstract

The invention relates to a device and method for malfunction treatment of refrigerator probes. The environmental temperature is defaulted to be 25 DEG C when an environmental temperature probe is malfunctioned; when the environmental temperature probe is in good condition but temperature probes in one chamber or more chambers are malfunctioned, a single-chip processor operates a compressor and a relevant electromagnetic valve of each chamber by reasonable on-off time according to environment temperature levels to control the temperature of the chambers within a reasonable range. The method has the advantages that even if one or more probes are malfunctioned, the temperature of a refrigerator can be controlled within a favorable temperature range to enable articles stored in the refrigerator to keep fresh in a certain period.
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Description

technical field

[0001] The invention relates to the field of refrigerator control, in particular to a method and device for treating failure of a refrigerator probe. Background technique

[0002] figure 1 It is the detection circuit of the conventional refrigerator probe, and the resistance signal of the probe is converted into a voltage signal by connecting one or more resistors in series, and input to the A / D port of the single-chip microcomputer. The temperature probe is a device used to collect the actual temperature in the refrigerator. Generally, a room should have at least one temperature probe, which is one of the most important devices in the normal operation of the refrigerator.

[0003] However, the following reasons may lead to the failure of the probe: 1. The sensor connecting wire is prone to cracks under low temperature for a long time in a cold and hot cycle environment. If cracks occur, the moisture will penetrate into the temperature sensing element along ...

Examples

Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with accompanying drawing:

[0023] figure 2 For adopting the control block diagram of the device of the present invention, the control system adopting the single-chip processor 6 as the core includes a detection unit connected with the single-chip processor 6: a refrigerating room temperature probe 1, a variable temperature room temperature probe 2, and a freezing room temperature probe 3 , ambient temperature probe 4, door switch signal and detection circuit 5; said single-chip processor 6 also drives compressor 8, blower fan 10, solenoid valve 1. 12, solenoid valve 2. 14 through drive circuit; and display button drive circuit 15 drives display button 16. Probes can use negative temperature coefficient (NTC) thermistors, direct heating thermistors, direct heating NTC thermistors, insulated thermistors, etc.

[0024] image 3 In order to adopt the refrigeration flow chart of the device of the pr...