Refrigerator

A technology for refrigerators and mechanical rooms, used in refrigerators/freezers, household refrigerators, program control, etc., can solve problems such as deterioration of refrigeration efficiency, and achieve the effect of preventing high temperature and excessive high temperature

Inactive Publication Date: 2009-10-28
KK TOSHIBA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of such a conventional refrigerator, since the compressor is switched to low-speed operation regardless of the outside air temperature when the fan in the mechanical room fails, there is a problem that even if the outside air temperature is low, Even if the normal operation of the compressor is continued, the refrigerant temperature will not become excessively high, and the low-speed operation will be performed, thereby deteriorating the refrigeration efficiency.

Method used

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Examples

Experimental program
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Effect test

no. 1 approach

[0026] Such as figure 1 As shown, the main body of the refrigerator 1 is formed by an insulated box 2 , and the internal storage room is divided into a refrigerator room 4 and a freezer room 6 .

[0027] The refrigerating evaporator (hereinafter referred to as "R evaporator") 7 and the cooling fan (hereinafter referred to as "R fan") 8 are arranged on the back side of the refrigerator compartment 4, and the freezing evaporator (hereinafter referred to as "F evaporator") ”) 14 and a cooling fan (hereinafter referred to as “F fan”) 13 are disposed on the back of the freezer compartment 6 . A machine room 10 is provided at the lower back of the freezer compartment 6 to form a space. A compressor 11, a machine room fan 20, a three-way valve 15, and the like are provided in the machine room 10 as will be described later.

[0028] Such as figure 2 As shown, the refrigerating cycle is sequentially connected to the compressor 11 and the condenser 12 that discharge the refrigerant,...

no. 2 approach

[0051] use Figure 4 , Figure 6 A refrigerator according to a second embodiment of the present invention will be described. The structure of the refrigerator 1 in this embodiment is the same as that of the first embodiment, and is Figure 1 ~ Figure 3 construction shown. Therefore, in the following description, components common to those of the first embodiment will be described using common reference numerals.

[0052] The present embodiment is characterized in that the control device 21 controls the compressor 11 when the C fan 20 stops abnormally. Continue the operation of the refrigeration cycle. If the C fan 20 cannot be restarted after N restart attempts, it is regarded as an abnormal failure, and the compressor 11 is stopped according to the outside air temperature, and the operation of the refrigeration cycle is stopped.

[0053] The functional structure of the control device 21 is the same as that of the first embodiment, and is Figure 4 The functional structur...

no. 3 approach

[0061] use Figure 4 , Figure 7 A refrigerator according to a third embodiment of the present invention will be described. The structure of the refrigerator 1 in this embodiment is the same as that of the first embodiment, and is Figure 1 ~ Figure 3 construction shown. Therefore, in the following description, components common to those of the first embodiment will be described using common reference numerals.

[0062] The feature of this embodiment also lies in the control of the compressor 11 when the C fan 20 is abnormally stopped by the control device 21. The control device 21 performs the following control: when the C fan 20 is abnormally stopped, it tries to restart N times. If the C fan 20 cannot be restarted, it is regarded as an abnormal failure, and the compressor 11 is stopped according to the outside air temperature, and thereafter if the outside air temperature drops, the compressor 11 is restarted, thereby intermittently operating the refrigeration cycle with...

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PUM

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Abstract

The invention provides a refrigerator, in case of abnormal stop of a mechanical chamber, capable preventing temperature overtop of the mechanical chamber, and also preventing temperature overtop of the casing of the refrigerator. For the refrigerator of the invention, a compressor (11) is provided in the mechanical chamber (10), and a mechanical chamber fan (20) is fixed for cooling the machien in the mechanical chamber, which is characterized in that: a control device (21) is used for detecting abnormal stop of the fan in the mechanical chamber, and preventing temperature overtop of the mechanical chamber and the refrigerator casing caused by stoping the compressor; and a fan abnormality display (23) is used for displaying abnormality of the fan of the mechanical chamber when the compressor stops.

Description

technical field [0001] The present invention relates to refrigerators. Background technique [0002] The machine room of the refrigerator is a relatively narrow space, but machines that generate heat during operation, such as a compressor or a condenser, are installed in the machine room. Therefore, a fan is installed in the machine room in order to air-cool the machines that generate heat. The fan in the mechanical room sometimes stops due to a failure. If the compressor continues to operate while the fan is stopped, the temperature of the compressor rises, and the temperature of the refrigerant in the compressor rises. It also rises excessively, and there are cases where the outer shell of the refrigerator becomes high temperature particularly in an environment where the outside air temperature is high. [0003] Conventionally, in this type of refrigerator, there is known a technique of controlling the fan in the mechanical room as described in Japanese Patent Applicatio...

Claims

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Application Information

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IPC IPC(8): F25D11/00F25D29/00G05B19/048
CPCY02B40/32Y02B40/00
Inventor 天生胜久野口好文吉冈功博岛崎树一
Owner KK TOSHIBA
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