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Refrigerator-freezer, controller of refrigerator-freezer, and method for determination of leakage of refrigerant

A control device and refrigerant technology, which is applied in household refrigeration devices, refrigeration and liquefaction, cooling fluid circulation devices, etc., can solve problems such as cost increase, failure to detect refrigerant leakage, compressor failure, etc.

Inactive Publication Date: 2009-07-15
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, it can be considered that the problem is that the refrigerant leakage cannot be detected, and if the operation continues, the compressor will fail.
In addition, there is a problem that the refrigerant detector is expensive, which increases the cost

Method used

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  • Refrigerator-freezer, controller of refrigerator-freezer, and method for determination of leakage of refrigerant
  • Refrigerator-freezer, controller of refrigerator-freezer, and method for determination of leakage of refrigerant
  • Refrigerator-freezer, controller of refrigerator-freezer, and method for determination of leakage of refrigerant

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Experimental program
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Embodiment Construction

[0062] best practice

[0063] Several embodiments of the present invention will be described below with reference to the accompanying drawings. image 3 is a longitudinal sectional view of the refrigeration refrigerator according to Embodiment 1 of the present invention, Figure 4 It is a schematic diagram of the refrigerating cycle unit of this refrigerating refrigerator.

[0064] 1001 represents the main body of the refrigerator, which is composed of an insulating box 1002 and an inner container 1003, and divides the interior into a refrigerator compartment 1004, a vegetable compartment 1005 and a freezer compartment 1006, each having independent opening and closing doors 1020-1022. An evaporator 1007 and a cooling fan 1008 are arranged on the back side of the vegetable compartment 1005 and operate in synchronization with the compressor 1011 . The back of the refrigerator compartment 1004 has a cool air circulation duct 1009 for supplying cool air to the inside of the re...

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PUM

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Abstract

A refrigerator-freezer is described, in which refrigerant leakage from the refrigeration cycle can be safely detected. The refrigerator-freezer comprises: a refrigeration cycle formed by a compressor, a capillary, an evaporator and an accumulator connected in series, and filled with a flammable refrigerant; a cooling fan configured to blow the cold air cooled by the evaporator in the refrigerator-freezer; and a refrigerant leakage detection system configured to detect leakage of the flammable refrigerant, wherein the refrigerant leakage detection system is provided with a temperature sensor configured to measure the temperature of a refrigerant conduit of the evaporator and judges that the flammable refrigerant is leaking in the low pressure side of the refrigeration cycle when the temperature is detected by the temperature sensor with the compressor being halted is no lower than a predetermined temperature.

Description

technical field [0001] The present invention relates to a refrigeration refrigerator with a refrigerant leakage detection device, a control device of the refrigeration refrigerator, and a refrigerant leakage judging method of the refrigeration refrigerator. Background technique [0002] In recent years, interest in the protection of the ozone layer and global warming has increased worldwide, and improvements in refrigerants used in refrigerating cycles such as refrigeration refrigerators and air conditioners have been demanded. At present, most commercially available refrigerators use HFC (hydrogen fluorocarbon) refrigerants, but the global warming coefficient of HFC refrigerants is larger than that of natural refrigerants. Therefore, as future refrigerants, HC (hydrocarbon) refrigerants that do not damage the ozone layer and have a low global warming coefficient are being studied. [0003] However, HC refrigerant is flammable, so the possibility of a fire developing when t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02F25B1/00F25D11/00F25B5/02F25B49/00F25D11/02F25D17/06F25D29/00
CPCF25B2700/21174F25B2700/171F25B2600/0253F25D2400/04F25D17/065F25D2700/14F25B2700/21175F25B2600/0251F25B49/005F25B2500/222F25B2600/2507F25D11/022F25D2700/12F25D2317/0682Y02B30/741F25B5/02Y02B40/32F25B2400/12F25D2700/10F25D2700/122F25D29/00Y02B30/70Y02B40/00
Inventor 野中光佐久间勉堀江宗弘上野山仪彦桥本昌二平井慎二猿田进山本亮介住广胜志
Owner KK TOSHIBA