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Novel fireproof electrical box applied to air conditioner

A technology for air conditioners and electrical boxes, applied in the field of electrical boxes, can solve the problems of unstable fire performance of cable fire trough boxes, affecting the fire performance of cable fire trough boxes, expansion failure of fireproof materials, etc. The effect of low material cost and improved fire performance

Pending Publication Date: 2019-11-12
GREE ELECTRIC APPLIANCES INC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent application number is CN201420260562.5 discloses a cable fireproof tank box, the tank box is provided with a vent hole, the expansion fireproof material layer is processed on the vent hole by dip coating, in case of high temperature or overheating, The fireproof material expands to block the vent hole, thereby isolating oxygen and achieving the purpose of fire prevention. However, the fireproof material is combined on the vent hole by dip coating, which has low reliability, poor adhesion, and is easy to fall off, making the cable fireproof groove The overall fireproof performance of the box is unstable; and the vent hole is easy to contact with volatile corrosive gases, which will easily cause the fireproof material to expand and fail, and also affect the overall fireproof performance of the cable fireproof box

Method used

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  • Novel fireproof electrical box applied to air conditioner
  • Novel fireproof electrical box applied to air conditioner
  • Novel fireproof electrical box applied to air conditioner

Examples

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Effect test

Embodiment 1

[0030] see Figure 1 to Figure 2 , in this specific embodiment, the intumescent flame retardant material layer 2 is arranged on the inner wall of the box body 1 ; the fireproof and flame retardant material layer 3 is arranged on the outer wall of the box body 1 . Specifically, the intumescent flame-retardant material layer 2 and the fire-resistant flame-retardant material layer 3 are respectively formed on the inner wall and the outer wall of the box body 1 by an integrated injection molding process. By arranging the intumescent flame retardant material layer 2 on the inner wall of the box body 1, taking advantage of the feature that the intumescent flame retardant material 2 is easy to be thermally expanded at high temperature or overheating, it can rapidly expand under heat and compress the cavity 11 when a fire occurs. Space, exhaust all the air in the cavity 11, isolate the air, reduce the oxygen content, make the flame inside the box body 1 self-extinguish, prevent the sh...

Embodiment 2

[0037] In this specific embodiment 2, the quick-installation structure of the baffle plate of this embodiment is basically the same as that of embodiment 1, the difference is that, see Figure 1 to Figure 3 , the fire retardant material layer 3 is arranged on the inner wall of the box body 1; the intumescent flame retardant material layer 2 is arranged on the fire retardant material layer 3. By arranging the intumescent flame-retardant material layer 2 and the fire-proof flame-retardant material layer 3 on the inner wall of the box body 1, the intumescent flame-retardant material layer 2 can be heated and expanded rapidly when a fire breaks out, compressing the space of the cavity 11, and closing the cavity All the air in 11 is exhausted, the air is isolated, the oxygen content is reduced, the flame inside the box body 1 is self-extinguished, and the short circuit in the new fireproof electrical box is prevented from igniting the surrounding components, thereby achieving the ef...

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Abstract

The invention discloses a novel fireproof electrical box applied to an air conditioner, which includes a box body, an expanded flame-retardant material layer and a fireproof flame-retardant material layer, wherein the box body has a cavity; the expanded flame-retardant material layer is arranged on the box body and located in the cavity for rapid expansion under high temperature or overheating conditions to exhaust the air in the cavity to achieve the purpose of flame retardancy; and the fireproof flame-retardant material layer is arranged on the box body for fire prevention and flame retardancy to prevent the flames inside the box body from escaping or the flames outside the box body from entering. According to the novel fireproof electrical box applied to the air conditioner, through a novel flame-retardant mode of combining the expanded flame-retardant material layer and the fireproof flame-retardant material layer, a dual fireproof protection role is played for the novel fireproofelectrical box applied to the air conditioner, the fireproof performance of the novel fireproof electrical box applied to the air conditioner can be improved more comprehensively, and the safety and the reliability of air conditioner products are improved.

Description

technical field [0001] The invention relates to an electrical box, in particular to a novel fireproof electrical box applied to an air conditioner. Background technique [0002] The dense electronic components on the PCB are one of the parts that are most likely to short-circuit and catch fire. There are several main reasons for the fire on the PCB board: first, there is dust on the circuit board, which causes a short circuit and arcs; Aging leads to bad contacts, which cause short circuits. The electrical box is a component that protects the PCB board. On the one hand, it is to prevent the short circuit in the electrical box from igniting the surrounding components. It has good flame retardant and fireproof properties, eliminating fire hazards. [0003] The patent application number is CN201420260562.5 discloses a cable fireproof tank box, the tank box is provided with a vent hole, the expansion fireproof material layer is processed on the vent hole by dip coating, in ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K5/00H05K5/02
CPCH05K5/00H05K5/0247
Inventor 张奇罗袁伟黎优霞陈志伟夏光辉梁博王现林
Owner GREE ELECTRIC APPLIANCES INC
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