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Method for controlling and/or preventing a fire in a vehicle air-conditioning system

A technology for air-conditioning equipment and vehicles, which can be used in fire protection equipment, fire rescue and other directions, and can solve problems such as flammability

Inactive Publication Date: 2014-03-05
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the downside of this refrigerant is its flammability
Although R1234yf is not classified as highly combustible, it is flammable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The 2.3.3.3-Tetrafluorprop-1-en (HFO-1234yf of Honeywell Company) of 500ml is ignited in glass tank and utilizes subsequently

[0014] a) pure water

[0015] b) A water-based gel solution of 10% calcium chloride (w / v) and 1% Prevento (w / v) extinguished.

[0016] In comparative experiment a), the fire could be extinguished, but fluoride was detected in the fire fighting water. With the use of the extinguishing agent according to the invention according to experiment b), on the one hand the fire was quickly extinguished and, on the other hand, free fluoride was no longer detected in the fire fighting water. Hydrogen fluoride produced during a fire occurs as an insoluble precipitate in the form of calcium fluoride (CaF 2 ) form condensation.

[0017] Similar results can be achieved with the gelling agent Firesorb.

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PUM

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Abstract

The invention relates to a method for controlling and / or preventing a fire in a vehicle air-conditioning system which contains 2,3,3,3-tetrafluorprop-1-ene as a coolant. Said method is characterised in that at least the components of the air-conditioning system containing the coolant are brought into contact with an extinguishing agent which contains an aqueous solution or suspension of a compound containing calcium and a gelling extinguishing agent additive.

Description

technical field [0001] The invention relates to a method for preventing and / or preventing fires in an air-conditioning system in a vehicle. Background technique [0002] The vast majority of new cars leave the factory with an air conditioning unit that includes a heat exchanger, usually filled with refrigerant. But traditional refrigerants are suspected of damaging the environment, and so certain car models specifically strive to introduce European-wide standards for new refrigerants. The refrigerant 2.3.3.3-Tetra-fluorprop-1-en (also known as R1234yf) favored in this process is clearly more environmentally friendly according to the manufacturer's instructions. But the downside of this refrigerant is its flammability. Although R1234yf is not classified as highly combustible, it is flammable. According to the manufacturer's instructions, combustion produces hydrogen fluoride (HF), an extremely toxic and corrosive compound. [0003] Common extinguishing agents such as wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
CPCA62C3/07A62D1/0035
Inventor T·韦勒S·洛伊特纳R·克恩
Owner ROBERT BOSCH GMBH