Refrigerator and control method thereof

A control method and refrigerator technology, which are applied to household refrigerators, freezers, refrigeration components, etc., can solve the problems of slow operation of refrigerants, inability to obtain cooling effects, inability to correctly control the circulation volume of refrigerants, etc. The effect of the increase in input power

Inactive Publication Date: 2008-07-16
TOSHIBA LIFESTYLE PROD & SERVICES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Furthermore, due to the sluggish operation of the refrigerant described above, as shown in FIG. 13, only the inlet portion of the R evaporator 108 is cooled. The problem is that unless the temperature near the outlet is lowered below the necessary temperature, the Cannot get sufficient cooling effect
And, again, this is the reason why refrigerant sluggishness occurs
[0011] Due to the existence of the above problems, the amount of refrigerant circulation cannot be correctly controlled, and the cooling capacity cannot be correctly controlled

Method used

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  • Refrigerator and control method thereof

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no. 1 Embodiment

[0070] Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1-3 .

[0071] Fig. 1 is a timing control flowchart of the control state in the refrigerator 1 of the present embodiment. figure 2 It is a longitudinal sectional view of the refrigerator 1. FIG. 3 shows the refrigeration cycle 10 of the refrigerator 1 .

[0072] First, according to figure 2 , illustrating the structure of the refrigerator 1.

[0073] Refrigerator 1 is provided with refrigerating chamber 2, vegetable chamber 3, ice making chamber 4 and freezing chamber 5 respectively from the upper stage.

[0074] A compressor 12 is provided in the machine compartment 6 at the back of the freezer compartment 5 . In addition, an F evaporator 24 and an F fan 30 are provided on the back of the ice making compartment 4 . In addition, an R evaporator 18 and an R fan 28 are provided on the back side of the vegetable compartment 3 . Further, a condenser fan (hereinafter refe...

no. 2 Embodiment

[0089] Below, refer to Figure 4 , make an explanation with respect to the 2nd embodiment.

[0090] The present embodiment differs from the first embodiment in that the termination time of the refrigerant recovery operation from the F mode to the R mode is determined based on the outlet temperature of the F evaporator 24 .

[0091]The F evaporator 24 operates at a temperature of about -25°C in the F mode, but when transitioning from the F mode to the R mode, as described in the first embodiment, the F valve 20 is closed and the F fan 30 is driven. In this state, the C fan 32 is operated at a high speed.

[0092] In this way, the refrigerant remaining in the F evaporator 24 evaporates due to the temperature in the refrigerator. Also, the inside of the F evaporator 24 is in a vacuum state due to the pumping by the compressor 12 . Thus, the temperature of the F evaporator 24 is set as Figure 4 Shown gradually decreases.

[0093] However, since there is no heat exchange with...

no. 3 Embodiment

[0096] Hereinafter, referring to FIG. 5, a third embodiment will be described.

[0097] The difference is that in the first embodiment, when the refrigerant recovery operation is terminated, the operation is switched to the R mode, but in this embodiment, the R fan 28 is not directly rotated at this time, but even at the beginning its stopped.

[0098] That is, after switching from the refrigerant recovery operation to the R mode, the operation of the R fan 28 is stopped immediately. Then, the stopped state of the R fan 28 is continued until the outlet temperature of the R evaporator 18 decreases. Also, the R fan 28 may be stopped only for the set time t2.

[0099] The reason for the operation as described above is that if the refrigerating room 2 and the vegetable room 3 increase (temperature) in the F mode, in this state, the refrigerant flows and the R fan 28 is rotated, and then evaporates in the R evaporator 18. Refrigerant liquid, forming a vapor. As a result, the pr...

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Abstract

The present invention relates to a refrigerator capable of performing accurate control on the circulation of coolant as well as reducing the influence of response delay come from coolant by providing a refrigerator equipped with a R evaporator and a F evaporator. At the time of transferring from F mode to R mode, the measure of present invention is to block on one hand the coolant flow into the F evaporator and to continue on the other hand the operation of the compressor at the end of F evaporation, while operates C fan to recycle coolant from the F evaporator and then pass the recycled coolant to the condenser for recycle operation, thereafter conducts the R evaporation process.

Description

technical field [0001] The present invention relates to a refrigerator having an evaporator for a refrigerator and an evaporator for a freezer, and a control method for the refrigerator. Background technique [0002] A refrigerator is usually provided with a refrigerating chamber and a freezing chamber. Recently developed refrigerators include refrigerators in which dedicated evaporators are respectively provided in respective refrigeration chambers. Figure 13 shows the refrigeration cycle of these evaporators. [0003] The refrigeration cycle 100 of Fig. 13 is connected with a condenser 103 on the downstream side of the compressor 102, and is branched into two at the downstream side of the condenser 103: a branch pipe is connected with a switching valve (hereinafter referred to as an R valve) 104 for a refrigerating room, The capillary tube for the refrigerator (hereinafter referred to as the R capillary) 106 and the evaporator for the refrigerator (hereinafter referred t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25D11/02F25D29/00F25D17/06F25B5/02F25D11/00
CPCF25D2400/04F25B2600/2511F25B5/02F25B2500/31F25D11/022F25B2400/19F25B2500/12F25D11/00
Inventor 佐久间勉鹿岛弘次田子正人土井隆司野口明裕
Owner TOSHIBA LIFESTYLE PROD & SERVICES CORP
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