Kitchen fire-fighting oil smoke exhausting and air exhausting device

Abstract

The utility model belongs to the technical field of kitchen fire control, and particularly relates to a kitchen fire control oil smoke exhaust device which comprises an oil smoke exhaust fan, a fire box is installed at the front end of the oil smoke exhaust fan, a steel cylinder is arranged on the rear side in the fire box, and ring supports are arranged on the left side and the right side of the steel cylinder in a sleeved mode. The steel cylinder and the control box are separated by the separation pieces in the fire-fighting box, so that the interior of the fire-fighting box is divided into a plurality of neat and orderly classified containing spaces, the ring supports stably support the left end and the right end of the steel cylinder, and the ring supports and the separation pieces are used in cooperation to form a rectangular encirclement ring around the steel cylinder. The moving space of the steel cylinder in the fire-fighting box is limited by the ring support and the isolation piece, so that the steel cylinder is stably placed in the fire-fighting box, and the shielding piece shields the upper end of the control box to prevent electric sparks and electric arcs generated by the control circuit from splashing to the surface of the steel cylinder. The problem that a steel cylinder explodes due to the fact that an existing kitchen fire-fighting oil smoke exhausting and air exhausting device is prone to being affected by electric sparks and electric arcs is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen fire protection, and in particular relates to a kitchen fire protection range fumes exhaust device. Background Art

[0002] As people's living standards gradually improve, they pay more and more attention to diet. The ingredients in the kitchen are becoming more and more abundant, and the cooking methods and eating methods are becoming more and more standardized. In addition, people's awareness of kitchen environmental hygiene has been strengthened, making it fashionable to pursue the goal of "no smoke and no odor". The kitchen must be equipped with corresponding cooking utensils to keep pace with the diet. Range hoods and exhaust fans have become the magic weapon to remove kitchen smoke and odor. Considering fire prevention, fire protection systems will be installed in the kitchen to deal with sudden fires. Various fire extinguishing agents have become the preferred fire protection measures in the kitchen. Selecting a suitable fire extinguishing agent is one of the key means to prevent fires.

[0003] Existing kitchen fire fume exhaust devices are equipped with high-pressure steel cylinders for storing fire extinguishing agents. In order to facilitate the timely discharge of the fire extinguishing agent in the steel cylinder by electric control, the high-pressure steel cylinder containing the fire extinguishing agent and the control circuit are arranged in the same fire fighting box at the same time, so as to shorten the wire length and reduce the line resistance to shorten the control delay time. However, the wiring terminal connectors and pin headers inside the control circuit will generate sparks. When more sparks gather, an arc will be formed. The control circuit is too close to the steel cylinder and will be affected by the sparks and arcs. The steel cylinder will inevitably age and crack if placed for a long time. The fire extinguishing agent in the steel cylinder leaks under high pressure, and the gaseous fire extinguishing agent is slightly sprayed from the cracks into the air around the control circuit. The atmospheric pressure around the steel cylinder is higher than the atmospheric pressure around the control circuit. At the same time, there are many sparks and arcs nearby, and the surrounding air is easily ionized to increase the air temperature. At this time, the temperature around the control circuit is higher than the temperature around the steel cylinder. The sparks and arcs will form high temperatures and ignite the surrounding combustibles. This huge contrast can easily cause the steel cylinder to explode, so this assembly method will have a fatal defect. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and solve the problem that the existing kitchen fire fume extraction and exhaust device is easily affected by electric sparks and arcs and causes explosion of the cylinder.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a kitchen fire fume exhaust device, including a fume exhaust fan:

[0006] A fire extinguishing box is installed at the front end of the range fumes exhaust fan, a steel cylinder is arranged at the rear side of the fire extinguishing box, ring brackets are inserted into the left and right sides of the steel cylinder, a shielding sheet is detachably connected to the front side of the fire extinguishing box, an isolation sheet plugged into the inner wall of the fire extinguishing box is arranged between the shielding sheet and the steel cylinder, the isolation sheet is located at the front end between the two ring brackets, the ring bracket is plugged into the isolation sheet, and a plurality of arc extinguishing fences are installed at the lower end of the shielding sheet;

[0007] A control box is installed below the arc extinguishing fence, a control circuit is installed inside the control box, and a blocking cover covering the control circuit is detachably connected to the upper end of the control box.

[0008] Furthermore, an electric valve controller is installed at the left end of the shielding piece, and an electric high-pressure control valve is installed at the left end of the cylinder. The high-pressure control valve is respectively connected to the electric valve controller and the control circuit signal.

[0009] Furthermore, a plurality of fire extinguishing nozzles are installed at the right end of the range fume exhaust fan, and a high-pressure injection pipe passing through the outside of the fire extinguishing box is connected to the fluid output end of the electric high-pressure control valve through a flange, and the high-pressure injection pipe is connected to the fire extinguishing nozzle, and an exhaust fan located above the fire extinguishing nozzle is installed on the upper part of the range fume exhaust fan.

[0010] Furthermore, the control box is provided with a plurality of heat dissipation holes 1 on its surface, and the fire extinguisher box is provided with a plurality of heat dissipation holes 2 on its surface.

[0011] Furthermore, a main control cabinet is installed at the rear end of the range fumes exhaust fan, and the main control cabinet is connected to the control circuit signal.

[0012] Furthermore, the shielding sheet is perpendicular to the isolation sheet, the isolation sheet is perpendicular to the ring support, and a distance of more than five centimeters is maintained between the blocking cover and the arc extinguishing fence.

[0013] Compared with the prior art, the utility model achieves the following beneficial effects:

[0014] The fire extinguishing box neatly and orderly places the cylinder, ring support, shielding piece, control box, cover, heat dissipation hole, arc extinguishing fence, electric valve controller, isolation piece, high-pressure injection pipe, and electric high-pressure control valve in the same space. The shielding piece and the ring support respectively support the front and rear ends of the isolation piece, and the front and rear ends of the isolation piece rely on the shielding piece and the ring support to maintain the effect of being placed vertically upright inside the fire extinguishing box. The shielding piece and the ring support limit the space for the isolation piece to move inside the fire extinguishing box. The ring support and the shielding piece are used together to strengthen the stability of the isolation piece installed vertically inside the fire extinguishing box. The outer periphery of the isolation piece is firmly inserted into the inner wall of the fire extinguishing box, and the isolation piece is formed inside the fire extinguishing box. The isolating plate separates the steel cylinder from the control box inside the fire extinguisher box, so that the inside of the fire extinguisher box is divided into multiple neatly and orderly classified accommodating spaces. The ring support stably supports the left and right ends of the steel cylinder. The ring support and the isolating plate are used together to form a rectangular encirclement around the steel cylinder. The ring support and the isolating plate limit the space for the steel cylinder to move inside the fire extinguisher box, so that the steel cylinder can be placed firmly inside the fire extinguisher box. The shielding plate shields the upper end of the control box to prevent the sparks and arcs generated by the control circuit from splashing onto the surface of the steel cylinder. The isolating plate prevents the steel cylinder from being disturbed by the sparks and arcs generated by the control circuit inside the fire extinguisher box and causing an explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the external structure of the fire extinguisher box of the utility model;

[0017] Figure 3 This is a cross-sectional view of the internal structure of the fire extinguisher box of the present utility model;

[0018] Figure 4 This is a cross-sectional view of the internal structure of the control box of the utility model;

[0019] Figure 5 This is a cross-sectional view of the connection effect between the high-pressure injection pipe and the fire-extinguishing nozzle of the utility model inside the range fumes exhaust fan.

[0020] In the figure: 1. range hood exhaust fan; 2. fire extinguishing box; 3. main control cabinet; 4. control box; 5. cover; 6. heat dissipation hole 1; 7. control circuit; 8. cylinder; 9. ring support; 10. shielding plate; 11. arc extinguishing fence; 12. electric valve controller; 13. isolation plate; 14. high-pressure injection pipe; 15. electric high-pressure control valve; 16. exhaust fan; 17. fire extinguishing nozzle; 18. heat dissipation hole 2. DETAILED DESCRIPTION

[0021] See also Figure 1-5The utility model provides a technical solution: a kitchen fire fume exhaust device, comprising a fume exhaust fan 1: a fire fighting box 2 is installed at the front end of the fume exhaust fan 1, a steel cylinder 8 is arranged at the rear side of the interior of the fire fighting box 2, and ring brackets 9 are inserted into the left and right sides of the steel cylinder 8, a shielding piece 10 is detachably connected to the front side of the interior of the fire fighting box 2, and an isolation piece 13 plugged into the inner wall of the fire fighting box 2 is arranged between the shielding piece 10 and the steel cylinder 8, the isolation piece 13 is located at the front end between the two ring brackets 9, the ring bracket 9 is plugged into the isolation piece 13, and a plurality of arc extinguishing fences 11 are installed at the lower end of the shielding piece 10; a control box 4 is installed below the arc extinguishing fence 11, a control circuit 7 is installed inside the control box 4, and a baffle 5 covering the upper part of the control circuit 7 is detachably connected to the upper end of the control box 4; a main control cabinet 3 is installed at the rear end of the fume exhaust fan 1, the main control cabinet 3 is connected to the control circuit 7 by signal, and the main control cabinet 3 is connected to the control circuit 7 sends out an electrical signal, and the main control cabinet 3 serves as the main control device to enable the control circuit 7 to achieve a sub-control effect. An electric valve controller 12 is installed at the left end of the shielding piece 10, and an electric high-pressure control valve 15 is installed at the left end of the steel cylinder 8. The high-pressure control valve is respectively connected to the electric valve controller 12 and the control circuit 7 by signal. A plurality of fire extinguishing nozzles 17 are installed at the right end of the range hood exhaust fan 1. The fluid output end of the electric high-pressure control valve 15 is connected to a high-pressure injection pipe 14 that passes through the outside of the fire fighting box 2 through a flange. The high-pressure injection pipe 14 is connected to the fire extinguishing nozzle 17. An exhaust fan 16 located above the fire extinguishing nozzle 17 is installed on the upper part of the range hood exhaust fan 1. The control circuit 7 starts the electric valve controller 12 to spray the fire extinguishing agent in the steel cylinder 8 along the high-pressure injection pipe 14. The fire extinguishing agent flows into the fire extinguishing nozzle 17 along the high-pressure injection pipe 14. The fire extinguishing agent is sprayed from the fire extinguishing nozzle 17, and the exhaust fan 16 blows air to assist in blowing out the fire source;

[0022] The fire extinguishing box 2 neatly and orderly places the steel cylinder 8, the ring support 9, the shielding sheet 10, the control box 4, the cover 5, the heat dissipation hole 6, the arc extinguishing fence 11, the electric valve controller 12, the isolation sheet 13, the high-pressure injection pipe 14, and the electric high-pressure control valve 15 in the same space. The shielding sheet 10 and the ring support 9 respectively support the front and rear ends of the isolation sheet 13, and the front and rear ends of the isolation sheet 13 respectively rely on the shielding sheet 10 and the ring support 9 to maintain the effect of being vertically placed inside the fire extinguishing box 2. The shielding sheet 10 and the ring support 9 limit the space for the isolation sheet 13 to move inside the fire extinguishing box 2. The ring support 9 and the shielding sheet 10 are used together to strengthen the stability of the isolation sheet 13 vertically installed inside the fire extinguishing box 2. The outer periphery of the isolation sheet 13 is firmly inserted into the inner wall of the fire extinguishing box 2. The isolation sheet 13 forms two independent front and rear spaces arranged front and back inside the fire extinguishing box 2. The isolation sheet 13 separates the steel cylinder 8 from the control box 4 inside the fire extinguishing box 2, so that the inside of the fire extinguishing box 2 is divided into a plurality of neatly and orderly classified accommodating spaces;

[0023] The ring support 9 stably supports the left and right ends of the steel cylinder 8. The ring support 9 and the isolation sheet 13 are used together to form a rectangular encirclement around the steel cylinder 8. The ring support 9 and the isolation sheet 13 limit the space for the steel cylinder 8 to move inside the fire extinguishing box 2, so that the steel cylinder 8 is stably placed inside the fire extinguishing box 2.

[0024] The shielding piece 10 shields the front side of the interior of the fire extinguishing box 2 and the position at the front end of the isolation piece 13. The shielding piece 10 shields the top of the control box 4. At the same time, the shielding piece 10 provides a horizontal installation surface for multiple arc-extinguishing fences 11. The shielding piece 10 suspends multiple arc-extinguishing fences 11 above the cover 5. The multiple arc-extinguishing fences 11 are arranged in order from left to right. The spacing between any two adjacent arc-extinguishing fences 11 is equal, forming a number of sub-grids. The "sub-grid arc extinguishing" principle is adopted to divide the arc between any two adjacent arc-extinguishing fences 11 into a number of small arcs, and the arc is consumed between any two adjacent arc-extinguishing fences 11 according to the thermal effect;

[0025] The baffle 5 shields the upper end of the control box 4, and the baffle 5 reduces the air inside the fire extinguishing box 2 from entering the control box 4 and contacting the control circuit 7, thereby reducing the air inside the fire extinguishing box 2 from entering the control box 4, reducing the adverse effect of the arc on the safety of the cylinder 8 caused by the airflow, and preventing the arc from causing damage to the cylinder 8;

[0026] The shielding sheet 10 shields the upper end of the control box 4 to prevent the electric sparks and arcs generated by the control circuit 7 from splashing onto the surface of the cylinder 8, and the isolation sheet 13 prevents the cylinder 8 from being disturbed by the electric sparks and arcs generated by the control circuit 7 inside the fire fighting box 2 and causing explosion;

[0027] The shielding sheet 10 is perpendicular to the isolation sheet 13, the isolation sheet 13 is perpendicular to the ring bracket 9, and the distance between the blocking cover 5 and the arc-extinguishing fence 11 is more than five centimeters, so that there is sufficient space between the blocking cover 5 and the arc-extinguishing fence 11 to ensure airflow and enhance the air flow between the blocking cover 5 and the arc-extinguishing fence 11. The control box 4 is provided with a plurality of heat dissipation holes 16 on the surface, and the fire extinguishing box 2 is provided with a plurality of heat dissipation holes 2 18 on the surface. With the help of the heat dissipation holes 16 and the heat dissipation holes 2 18, the heat inside the fire extinguishing box 2 can be dissipated into the air to reduce the temperature inside the fire extinguishing box 2;

[0028] When the fire extinguishing agent in the cylinder 8 is used up, remove the electric high-pressure control valve 15 from the left end of the cylinder 8, grab the two ring brackets 9 by hand to pull the cylinder 8 out from the fire box 2, and the ring brackets 9 can be used as handles to remove the cylinder 8, which is convenient for replacing the cylinder 8.

Claims

1. A kitchen fire fume exhaust device, comprising a fume exhaust fan (1), characterized in that: A fire extinguishing box (2) is installed at the front end of the fume exhaust fan (1), a steel cylinder (8) is arranged at the rear side of the fire extinguishing box (2), and ring brackets (9) are inserted into the left and right sides of the steel cylinder (8). A shielding sheet (10) is detachably connected to the front side of the fire extinguishing box (2), and an isolation sheet (13) plugged into the inner wall of the fire extinguishing box (2) is arranged between the shielding sheet (10) and the steel cylinder (8). The isolation sheet (13) is located at the front end between the two ring brackets (9), and the ring bracket (9) is plugged into the isolation sheet (13). A plurality of arc extinguishing fences (11) are installed at the lower end of the shielding sheet (10); A control box (4) is installed below the arc extinguishing fence (11), a control circuit (7) is installed inside the control box (4), and a cover (5) covering the control circuit (7) is detachably connected to the upper end of the control box (4).

2. A kitchen fire fume exhaust device as claimed in claim 1, characterized in that: An electric valve controller (12) is installed at the left end of the shielding sheet (10), and an electric high-pressure control valve (15) is installed at the left end of the steel cylinder (8). The high-pressure control valve is respectively connected to the electric valve controller (12) and the control circuit (7) for signals.

3. A kitchen fire fume exhaust device as claimed in claim 2, characterized in that: A plurality of fire extinguishing nozzles (17) are installed at the right end of the range hood exhaust fan (1); a fluid output end of the electric high-pressure control valve (15) is connected to a high-pressure injection pipe (14) extending through the outside of the fire fighting box (2) via a flange; the high-pressure injection pipe (14) is connected to the fire extinguishing nozzle (17); and an exhaust fan (16) located above the fire extinguishing nozzle (17) is installed at the upper part of the range hood exhaust fan (1).

4. A kitchen fire fume exhaust device as claimed in claim 1, characterized in that: The control box (4) has a plurality of heat dissipation holes (6) on its surface, and the fire fighting box (2) has a plurality of heat dissipation holes (18) on its surface.

5. A kitchen fire fume exhaust device as claimed in claim 1, characterized in that: A main control cabinet (3) is installed at the rear end of the range fume exhaust fan (1), and the main control cabinet (3) is connected to the control circuit (7) by signal.

6. A kitchen fire fume exhaust device as claimed in claim 1, characterized in that: The shielding sheet (10) and the isolation sheet (13) are perpendicular to each other, the isolation sheet (13) and the ring bracket (9) are perpendicular to each other, and a distance of more than five centimeters is maintained between the blocking cover (5) and the arc extinguishing fence (11).

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