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Refrigerator

A technology for refrigerators and cold rooms, applied in the field of refrigerators, which can solve the problems of reduced cooling performance, uneconomical performance, and lack of reliable defrosting of coolers for cold rooms, achieving reliable defrosting and saving power consumption

Inactive Publication Date: 2010-12-22
TOSHIBA LIFESTYLE PROD & SERVICES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, the temperature of the cooler for the refrigerator compartment does not rise to a predetermined temperature (the defrosting end temperature), and the defrosting of the cooler for the refrigerator compartment cannot be reliably performed.
As a result, even if it is shifted to the refrigeration mode, since there is residual frost in the refrigerator for the refrigerator, the refrigerator cannot be cooled efficiently, resulting in a decline in cooling performance, and an increase in power consumption to compensate for this. presents the problem of becoming uneconomical

Method used

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Examples

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Effect test

no. 2 Embodiment

[0098] exist Figure 8 to Figure 11 In the second embodiment shown, the specific conditions, the operation timing and the stop timing of the refrigerator defrosting heater 26 for refrigerator compartments are changed from those of the first embodiment.

[0099] Specifically, first, if Figure 8 As shown, when "R fan operation" is executed after "F cooling" is executed, the execution of "F cooling" (freezing mode) and "R cooling" (refrigerating mode) is regarded as one cycle. The number of times is counted (step B1).

[0100] and, if Figure 9 As shown, in the defrosting mode, in step A103, if it is judged that the number of times counted in step A12 is not more than the prescribed N times (NO), then whether the number of cycles counted in step B1 is the prescribed N' Determination of times (for example, 20 times) or more (step B101), in this step B101, if it is judged that it is not N' times or more (NO), the process proceeds to step A104.

[0101] On the other hand, in st...

no. 3 Embodiment

[0114] exist Figure 12 to Figure 15 In the third embodiment shown, the specific conditions, the operation timing and the stop timing of the refrigerator defrosting heater 26 for refrigerator compartments are changed from those in the first embodiment.

[0115] Specifically, first as Figure 12 As shown, when the "R fan operation" after "F cooling" is executed, the counting of the temperature rise time of the R evaporator (cooler 20 for refrigerating room) is simultaneously started (step C1).

[0116] And, in step A4, if it is judged that the "R evaporator temperature" detected by the cooler temperature sensor 28 for the refrigerating room has become more than a predetermined temperature (defrosting end temperature) (YES), the R fan is stopped, and the R fan is stopped. Counting of the temperature rise time of the evaporator (step C2). Then, it is judged whether the temperature rise time of the R evaporator counted so far is longer than a predetermined time (for example, 30 ...

no. 4 Embodiment

[0126] exist Figure 16 and Figure 17 In the fourth embodiment shown, the specific conditions, the operation timing and the stop timing of the refrigerator defrosting heater 26 for refrigerator compartments are changed from those in the first embodiment.

[0127] Specifically, first, if Figure 16 As shown, after executing "F cooling" (step A1), it is judged whether or not the number of specific counts is predetermined N"" times (for example, 3 times) (step D1). At this time, if it is judged not to be the prescribed N"" times (NO), then proceed to step A4 through step A2 (R fan operation), but if it is judged to be the prescribed N"" times (YES), then the R fan After operating and operating the R evaporator heater (step D2), clear the counted number of times judged in step D1 (step D3), and proceed to step A4.

[0128] In step A4, if it is judged that "R evaporator temperature" is above the predetermined temperature (defrosting end temperature) (YES), stop the R fan and th...

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Abstract

A refrigerator according to the invention can settle the problem of overgreat temperature increase of refrigerating chamber and simultaneously execute the defrosting of cooler used by the refrigerating chamber. Commonly the refrigerating chamber activates a fan used by the refrigerating chamber for executing the defrosting of cooler used by the refrigerating chamber in a freezing mode. Furthermore, the switching from the freezing mode to a cold preserving mode is executed independently from the detection result of cooler temperature sensor used by the refrigerating chamber. At a state that a special condition is satisfied, the fan used by the refrigerating chamber is activated in the freezing mode and the defrosting of cooler used by the refrigerating chamber is executed (step A202, A203). Furthermore when the detection result of the cooler temperature sensor used by refrigerating chamber is above a first preset temperature (YES in step A205), the switching (step A208-A210) from the freezing mode to the cold preserving mode is executed.

Description

technical field [0001] The present invention relates to an improved refrigerator for defrosting a cooler for a refrigerator. Background technique [0002] Conventionally, in a refrigerator, a freezer compartment and a refrigerator compartment are provided, and a cooler for the freezer compartment is provided for cooling the freezer compartment, a cooler for the refrigerator compartment is provided for cooling the refrigerator compartment, and a cooler for the freezer compartment is provided. A defrosting heater for the cooler for the freezer, a fan for the refrigerator that circulates the air in the refrigerator in contact with the cooler for the refrigerator, and a cooler temperature sensor for the refrigerator that detects the temperature of the cooler for the refrigerator , also has a freezing mode in which the freezer is cooled by the cooler for the freezer, a refrigeration mode in which the refrigerator is cooled by the cooler for the freezer, and cooling for the freeze...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25D11/02F25D21/08F25D29/00
Inventor 天生胜久富坚萌子岛崎树一吉冈功博野口好文
Owner TOSHIBA LIFESTYLE PROD & SERVICES CORP
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