Refrigerator

A technology of refrigerators and cooling fans, applied in the field of refrigerators, which can solve problems such as low temperature, overcooling of stored objects, and inability to cool stored objects, and achieve the effect of improving antibacterial properties and freshness preservation

Active Publication Date: 2015-01-28
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when the amount of storage is small, the cooling operation may be excessive, resulting in "overcooling" of the storage
[0006] In addition, after a sufficient period of time, the stored object maintains its temperature by its own heat capacity, so there is a tendency that the larger the stored volume, the lower the temperature will be compared with the internal air temperature.
Therefore, the storage becomes "too cold" and cannot cool the storage at an optimal temperature

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0077] Below, according to figure 1 The first embodiment of the present invention is explained through FIG. 5 . figure 1 It is a side sectional view of the refrigerator in the first embodiment of the present invention, figure 2 It is a control block diagram of the refrigerator in 1st Embodiment of this invention. in addition, Figure 3A It is a characteristic diagram of the air volume, static pressure and rotational speed of the cooling fan of the refrigerator in the first embodiment of the present invention, Figure 3B is a characteristic diagram of the rotational speed of the cooling fan and the storage capacity of the refrigerator in the first embodiment of the present invention, Figure 4 It is a control flowchart of the refrigerator in 1st Embodiment of this invention. Figure 5A is a characteristic diagram of the air volume and rotation speed of the cooling fan including the correction factor in the refrigerator in the first embodiment of the present invention, ...

no. 2 approach

[0105] Below, according to Figure 6 The refrigerator in 2nd Embodiment of this invention is demonstrated to FIG. 9. FIG. Figure 6 is a control block diagram of the refrigerator in the second embodiment of the present invention, Figure 7A It is a characteristic diagram of the air volume, static pressure, and input current of the cooling fan of the refrigerator in the second embodiment of the present invention, Figure 7B It is a characteristic diagram of the input current to the cooling fan and the storage capacity of the refrigerator in the second embodiment of the present invention. Figure 8 is a control flowchart of the refrigerator in the second embodiment of the present invention, Figure 9A is a characteristic diagram of the air volume of the cooling fan and the input current including correction factors in the refrigerator in the second embodiment of the present invention, Figure 9B It is a characteristic diagram of the input current to the cooling fan and the st...

no. 3 approach

[0121] Below, according to Figure 10 to Figure 12 The refrigerator in 3rd Embodiment of this invention is demonstrated. Figure 10 is a control block diagram of the refrigerator in the third embodiment of the present invention, Figure 11AIt is a characteristic diagram of the air volume, static pressure and rotational speed of the cooling fan of the refrigerator in the third embodiment of the present invention, Figure 11B It is a characteristic diagram of the rotation speed of the cooling fan of the refrigerator in 3rd Embodiment of this invention, and a storage capacity. Figure 12 It is a control flowchart of the refrigerator in 3rd Embodiment of this invention. In addition, the same code|symbol is attached|subjected to the same part as 1st Embodiment or 2nd Embodiment, and description is abbreviate|omitted.

[0122] The refrigerator in the third embodiment of the present invention constituted as above is characterized in that there is no correction step (step S3 to ste...

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PUM

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Abstract

A refrigerator provided with: a storage chamber which is demarcated by thermally-insulated walls and a thermally insulated door, and which stores storage items; a cooler for cooling the storage chamber; a damper (12) which controls the amount of cold air provided to the storage chamber; the thermally insulated door which covers the storage chamber; and door open/closed detection units (13a-13d) which detect if the thermally insulated door is open or closed. The refrigerator is also provided with: a cooling fan (10) which supplies cold air to the storage chamber; a fan motor which drives the cooling fan (10); a rotation speed detection unit (15) for detecting the rotation speed of the fan motor; and an arithmetic control unit (14) which arithmetically processes the detection results from the rotation speed detection unit (15). Furthermore, the arithmetic control unit (14) estimates the storage amount of the storage chamber on the basis of the detection results from the door open/closed detection units (13a-13d) and the detection results from the rotation speed detection unit (15).

Description

technical field [0001] The present invention relates to a refrigerator having a function of detecting a storage state in the refrigerator. Background technique [0002] In recent years, household refrigerators generally adopt an indirect cooling method in which a fan circulates cold air in the refrigerator. In the conventional refrigerator, the temperature in the refrigerator is kept at an appropriate temperature by controlling and adjusting the temperature based on the detection result of the temperature in the refrigerator. For example, there is a refrigerator provided with a movable cold air discharge device as a refrigerator that maintains the temperature inside the refrigerator uniformly (see Patent Document 1). [0003] Figure 48 It is a perspective view of the refrigerator compartment of the conventional refrigerator seen from the front. Such as Figure 48 As shown, the movable cold air discharge device 302 provided in the refrigerator compartment 301 of the refrig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D11/00
CPCF25D17/062F25D29/00F25B2600/112F25B2700/02F25D13/00F25D17/06F25D29/005F25D2317/068F25D2700/00F25D2700/02
Inventor 中川雅至上迫丰志柿田健一森贵代志
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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