Automatic fire extinguishing device of smoke exhaust system of range hood

Abstract

The utility model relates to an automatic fire extinguishing device of a smoke exhaust system of a range hood, which comprises a control cabinet, a medicament bottle and a high-pressure gas bottle, the medicament bottle and the high-pressure gas bottle are arranged in the control cabinet, a medicament conveying pipe is arranged on the medicament bottle, a medicament spraying port is arranged on the medicament conveying pipe, and a cover plate is arranged on a suspended ceiling; the temperature control mechanism is arranged on the cover plate, and the high-pressure gas cylinder is triggered through the temperature control mechanism, so that the medicament bottle sprays the medicament through the medicament spraying opening; the opening and closing mechanism is arranged on the cover plate, the fuse is fused, the connecting piece is opened under the action of the torsional spring, on one hand, the high-pressure gas cylinder is triggered through the triggering mechanism connected with the steel wire, gas is injected into the medicament bottle, and medicaments are sprayed out; and on the other hand, a gear transmission system in the opening and closing mechanism enables the baffle plate to slide to expose the pesticide spraying opening, so that the pesticide spraying opening is prevented from being blocked by oil smoke, the pesticide can be smoothly sprayed to an area needing fire extinguishing, rapid and effective automatic fire extinguishing is realized, and the safety of a kitchen is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fire extinguishing technical field, concretely relates to an automatic fire extinguishing device of range hood smoke exhaust system. BACKGROUND

[0002] In the existing kitchen environment, the range hood as an important component of the smoke exhaust system is of vital importance to safety. In order to prevent accidents, the automatic fire extinguishing device of the range hood smoke exhaust system is generally equipped to extinguish the fire in the early stage.

[0003] However, the automatic fire extinguishing device on the market at the present stage generally lacks effective protection mechanism for the medicine spraying port in design, which means that in the kitchen environment full of oil fume, oil stains and various small impurities, these impurities are easy to adhere to and gradually accumulate on the medicine spraying port, and with the passage of time, the medicine spraying port may be blocked. Once the medicine spraying port is blocked, even if a fire occurs, the automatic fire extinguishing device may lose its due effect because it cannot quickly and unobstructedly start and release the fire extinguishing agent, so as to fail to effectively suppress and extinguish the early fire. Therefore, an automatic fire extinguishing device of range hood smoke exhaust system is proposed. SUMMARY

[0004] The purpose of the utility model is to provide an automatic fire extinguishing device of range hood smoke exhaust system which effectively protects the medicine spraying port.

[0005] The utility model realizes the above-mentioned purpose through the following technical scheme:

[0006] An automatic fire extinguishing device of range hood smoke exhaust system comprises a control cabinet, a medicine bottle and a high-pressure gas cylinder arranged in the control cabinet, a medicine conveying pipe arranged on the medicine bottle, a medicine spraying port arranged on the medicine conveying pipe, and a cover plate arranged on the ceiling.

[0007] Further comprising:

[0008] A temperature control mechanism is arranged on the cover plate, which triggers the high-pressure gas cylinder to make the medicine bottle spray medicine through the medicine spraying port.

[0009] An opening and closing mechanism is arranged on the cover plate, which makes the medicine spraying port exposed when the temperature control mechanism operates.

[0010] As a further optimization scheme of the utility model, the temperature control mechanism comprises a horizontal rod one, the horizontal rod one is arranged on the cover plate, rotating connecting pieces are arranged at both ends of the horizontal rod one, tooth protrusions are arranged on the upper edges of the connecting pieces, a torsional spring is arranged between the connecting pieces, the torsional spring is sleeved on the horizontal rod one, and a fuse is arranged between the connecting pieces.

[0011] As a further optimization scheme of the utility model, the opening and closing mechanism includes two horizontal rods two, the horizontal rod two is rotationally arranged on the cover plate, the horizontal rod two is located above the connecting piece, gear one is rotationally arranged on the horizontal rod two, the gear one is engaged with the tooth convex, gear two is arranged at the both ends of the horizontal rod two, the rack is slidably arranged on the cover plate, the rack is engaged with the gear two, the connecting rod is arranged on the rack, the connecting rod is slidably arranged on the cover plate, the rack is provided with the shielding plate through the connecting rod.

[0012] As a further optimization scheme of the utility model, the high-pressure gas cylinder is provided with a steel wire pipe, the steel wire pipe is provided with a steel wire, and a trigger mechanism is arranged between the high-pressure gas cylinder and the steel wire.

[0013] As a further optimization scheme of the utility model, the cover plate is provided with an avoiding groove, the cover plate is provided with a movable groove, the connecting rod is slidably arranged on the cover plate through the movable groove, the cover plate is provided with a mounting plate, the cover plate is provided with the steel wire pipe through the mounting plate, and the steel wire pipe is sleeved on the steel wire.

[0014] As a further optimization scheme of the utility model, the avoiding groove is arranged below the medicine spraying opening, and the shielding plate is slidably arranged on the avoiding groove.

[0015] The utility model has the advantages of:

[0016] Different from the prior art, in actual use, when the fuse is fused, the connecting piece is opened under the action of the torsion spring, on the one hand, the trigger mechanism connected by the steel wire triggers the high-pressure gas cylinder, and gas is injected into the medicine bottle and the medicine is sprayed out; on the other hand, the gear transmission system in the opening and closing mechanism makes the shielding plate slide and exposes the medicine spraying opening, so that the oil smoke is prevented from blocking the medicine spraying opening, and the medicine can be smoothly sprayed to the area needing fire extinguishing, rapid and effective automatic fire extinguishing is realized, and the safety of the kitchen is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the cover plate lower surface structure schematic diagram of the utility model;

[0019] Figure 3 It is the temperature control mechanism connecting structure schematic diagram of the utility model.

[0020] In the diagram: 1. Control cabinet; 11. Medicine bottle; 12. High-pressure gas cylinder; 2. Cover plate; 21. Clearance groove; 22. Movable groove; 23. Mounting plate; 3. Temperature control mechanism; 31. Connecting piece; 311. Gear; 32. Crossbar 1; 33. Torsion spring; 34. Fuse; 4. Steel wire; 5. Opening and closing mechanism; 51. Crossbar 2; 52. Gear 1; 53. Gear 2; 54. Rack; 541. Connecting rod; 55. Baffle plate; 6. Steel wire tube; 7. Medicine delivery tube. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1

[0023] like Figure 1 - Figure 3 As shown, an automatic fire extinguishing device for a range hood exhaust system includes a control cabinet 1 and a chemical bottle 11 and a high-pressure gas cylinder 12 installed in the control cabinet 1. The chemical bottle 11 is provided with a delivery pipe 7 and a spray nozzle is provided on the delivery pipe 7. A cover plate 2 is installed on the ceiling.

[0024] It also includes:

[0025] Temperature control mechanism 3 is installed on cover plate 2. The high pressure gas cylinder 12 is triggered by temperature control mechanism 3, so that the medicine bottle 11 sprays medicine through the spray nozzle.

[0026] The opening and closing mechanism 5 is installed on the cover plate 2. When the temperature control mechanism 3 is activated, it is exposed through the opening and closing mechanism 5.

[0027] The temperature control mechanism 3 includes a crossbar 32, which is mounted on the cover plate 2. Rotary connecting pieces 31 are provided at both ends of the crossbar 32. The upper edge of the connecting piece 31 is provided with toothed protrusions 311. The connecting piece 31 has an arc structure. The arc and the toothed protrusions 311 make the connecting piece 31 partially function as a gear. A torsion spring 33 is provided between the connecting pieces 31 to store elastic potential energy. When the fuse 34 has not melted, it overcomes external interference and keeps the device stable. When it melts, it releases energy to drive the connecting piece 31 to move. The torsion spring 33 is sleeved on the crossbar 32. The fuse 34 is provided between the connecting pieces 31.

[0028] The opening and closing mechanism 5 comprises two horizontal rods two 51, which are rotationally arranged on both sides of the cover plate 2, above the connecting piece 31, and on which gear one 52 is rotationally arranged, which is engaged with the tooth convex 311, and gear two 53 is arranged at both ends of the horizontal rod two 51, and the rack 54 is slidingly arranged on the cover plate 2, which is engaged with the gear two 53, and the connecting rod 541 is arranged on the rack 54, which provides connection and support for the shielding plate 55, and also limits the movement track to ensure accurate action, the connecting rod 541 is slidingly arranged on the cover plate 2, and the shielding plate 55 is arranged on the rack 54 through the connecting rod 541, and the arrangement of the two horizontal rods two 51 allows different gear one 52 to rotate in different directions, and each can drive the gear two 53 to rotate.

[0029] The high-pressure gas cylinder 12 is provided with a steel wire tube 6, and the steel wire tube 6 is provided with a steel wire 4, and a trigger mechanism is arranged between the high-pressure gas cylinder 12 and the steel wire 4, which is connected with the connecting piece 31 through the steel wire 4, the avoidance groove 21 provides space for the action of the spraying port and the shielding plate 55 to ensure smooth spraying of the medicament; the movable groove 22 provides a sliding channel for the connecting rod 541 to ensure smooth opening and closing of the shielding plate 55.

[0030] The cover plate 2 is provided with an avoidance groove 21, and the cover plate 2 is provided with a movable groove 22, and the connecting rod 541 is slidingly arranged on the cover plate 2 through the movable groove 22, and the cover plate 2 is provided with a mounting plate 23, and the cover plate 2 is provided with a steel wire tube 6 through the mounting plate 23, and the steel wire tube 6 is sleeved on the steel wire 4.

[0031] The avoidance groove 21 is arranged below the spraying port, and the shielding plate 55 is slidingly arranged on the avoidance groove 21.

[0032] It should be noted that the automatic fire extinguishing device of the range hood smoke exhaust system is provided with torsion springs 33 between the connecting pieces 31, which maintain the relative positions of the connecting pieces 31 in the normal state, and the fuses 34 between the connecting pieces 31 serve as temperature-sensitive elements, and once the ambient temperature reaches the fusing temperature of the fuses 34, the fuses 34 are fused, and under the action of the torsion springs 33, the connecting pieces 31 are opened, after the connecting pieces 31 act, on the one hand, through the trigger mechanism connected with the steel wires 4, the high-pressure gas cylinder 12 is triggered, and then the gas is injected into the medicine bottle 11, and the medicine is sprayed; on the other hand, the opening and closing mechanism 5 operates synchronously, the horizontal rod two 51 is rotatably arranged on the cover plate 2, the gear one 52 on the horizontal rod two 51 corresponding to the connecting piece 31 is engaged with the tooth protrusion 311 on the connecting piece 31, the connecting piece 31 drives the gear one 52 to rotate, and the gear two 53 at both ends of the horizontal rod two 51 is engaged with the rack 54 slidably arranged on the cover plate 2, so that the two racks 54 drive the shielding plates 55 to move to both sides through the connecting rods 541, respectively, the cover plate 2 is provided with an avoiding groove 21 and a movable groove 22, the connecting rod 541 slides through the movable groove 22, and the shielding plate 55 slides on the avoiding groove 21, and the originally shielded part is exposed, at this time, the medicine bottle 11 is triggered by the high-pressure gas cylinder 12, and sprays medicine through the medicine outlet on the medicine pipe 7, since the avoiding groove 21 is arranged below the medicine outlet, the medicine can be smoothly sprayed to the area needing to be extinguished, and the purpose of automatic extinguishing is achieved, so that the medicine outlet on the medicine pipe 7 is shielded when the range hood works normally, and the medicine outlet is prevented from being blocked by oil fume.

[0033] The above-described embodiments only express several embodiments of the present application, and the description is relatively specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application.

Claims

1. A kind of automatic fire extinguishing device of range hood exhaust system, including control cabinet (1) and the reagent bottle (11) and high-pressure gas cylinder (12) being arranged in control cabinet (1), the reagent bottle (11) is provided with medicine delivery tube (7), it is characterized by: The medicine delivery pipe (7) is provided with a medicine spraying port, and the ceiling is provided with a cover plate (2); Further comprising: A temperature control mechanism (3) is arranged on the cover plate (2), and the high-pressure gas cylinder (12) is triggered through the temperature control mechanism (3), so that the medicine bottle (11) sprays medicine through the medicine spraying port; An opening and closing mechanism (5) is arranged on the cover plate (2), and when the temperature control mechanism (3) is actuated, the opening and closing mechanism (5) is used to expose.

2. A fire extinguishing device for a range hood exhaust system according to claim 1, wherein: The temperature control mechanism (3) comprises a horizontal rod (32), the horizontal rod (32) is arranged on the cover plate (2), the horizontal rod (32) is provided with a rotating connecting piece (31) at both ends, the connecting piece (31) is provided with a tooth protrusion (311) at the upper edge, a torsional spring (33) is arranged between the connecting pieces (31), the torsional spring (33) is sleeved on the horizontal rod (32), and a fuse (34) is arranged between the connecting pieces (31).

3. A fire extinguishing device for a range hood exhaust system according to claim 2, wherein: The opening and closing mechanism (5) comprises two horizontal rods (51), the horizontal rods (51) are rotatably arranged on the cover plate (2), the horizontal rods (51) are located above the connecting pieces (31), gear wheels (52) are rotatably arranged on the horizontal rods (51), the gear wheels (52) are engaged with the tooth protrusions (311), gear wheels (53) are arranged at both ends of the horizontal rods (51), a rack (54) is slidably arranged on the cover plate (2), the rack (54) is engaged with the gear wheels (53), a connecting rod (541) is arranged on the rack (54), the connecting rod (541) is slidably arranged on the cover plate (2), and a shielding plate (55) is arranged on the rack (54) through the connecting rod (541).

4. The automatic fire extinguishing device of an exhaust system of a range hood according to claim 2, characterized in that: A steel wire tube (6) is arranged on the high-pressure gas cylinder (12), a steel wire (4) is arranged in the steel wire tube (6), and a triggering mechanism is arranged between the high-pressure gas cylinder (12) and the steel wire (4), which is connected with the connecting piece (31) through the steel wire (4).

5. The automatic fire extinguishing device of an exhaust system of a range hood according to claim 3, characterized in that: An avoiding groove (21) is formed in the cover plate (2), a movable groove (22) is formed in the cover plate (2), the connecting rod (541) is slidably arranged on the cover plate (2) through the movable groove (22), an installation plate (23) is arranged on the cover plate (2), the cover plate (2) is provided with the steel wire tube (6) through the installation plate (23), and the steel wire tube (6) is sleeved on the steel wire (4).

6. A fire extinguishing system for a range hood exhaust system according to claim 5, wherein: The avoiding groove (21) is arranged below the medicine spraying port, and the shielding plate (55) is slidably arranged on the avoiding groove (21).

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