Fire extinguishing device for kitchen stove

Abstract

The utility model discloses a kitchen stove fire extinguishing device, and belongs to the technical field of fire extinguishing. A kitchen stove fire extinguishing device comprises a shell with a liquid supply assembly and further comprises a protective cover arranged on the shell in a lifting mode, an atomizing nozzle is arranged in the protective cover, the spraying end of the atomizing nozzle faces the opening end of the protective cover, and the atomizing nozzle is communicated with the output end of the liquid supply assembly; the protective plate is rotationally connected to the open end of the protective cover, a limiting plate is fixedly connected to the rotating shaft, a through hole is formed in the limiting plate, and when the limiting plate and the through hole are arranged in a staggered mode, the limiting plate can abut against the outer wall of the protective plate; the driving part is used for driving the rotating shaft to rotate; according to the utility model, oil fume generated by the cooking range can be blocked, so that fine and loose oil fume generated by combustion of oil substances is attached to the outer surface of the protection plate, the oil fume is prevented from being attached to the inner wall of the protection cover and the atomization spray head, and the phenomenon that thermal oxidation decomposition products in the oil fume block the atomization spray head is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing, in particular to a kitchen stove fire extinguishing device. Background Art

[0002] It is not uncommon for kitchen fires to occur due to improper use of stoves. The reason is that cooking oil fires, as a special type of fire, are the main cause of kitchen fires. Dry chemical fire extinguishing agents, such as foam and dry powder, can effectively extinguish flames on the surface of cooking oil, but cannot effectively prevent the fire from rekindling. Wet chemical fire extinguishing agents such as light water foam fire extinguishing systems and saponification reaction foam fire extinguishing systems are used to extinguish Class K fires, which pollute the environment, are troublesome to clean up later, and are expensive. Therefore, kitchen fire extinguishing has always been a concern for people. With the development of science and technology and the improvement of fire extinguishing equipment, high-pressure fine water mist can be used to extinguish Class A, Class B, and Class C fires, and is also suitable for cooking oil fires.

[0003] After searching, the existing Chinese patent publication number: CN218248192U discloses a kitchen stove fire extinguishing device, including a device body, a lifting structure and a fire extinguishing cover. A water cavity is arranged inside the rear side of the device body, a submersible pressure pump is installed at the bottom of the water cavity, an L-shaped delivery hose is installed on the top of the submersible pressure pump, a delivery hose is installed at one end of the outer side of the L-shaped delivery hose, the delivery hose passes through the top of the fire extinguishing cover, and a water mist nozzle is installed at the end of the delivery hose. Two lifting grooves are arranged on the front side of the device body, the lifting structure includes two screw rods, screw nut seats are installed on the two screw rods, and a support frame assembly is installed on the front side of the two screw nut seats. A temperature sensor and a smoke sensor are installed at the bottom of the front side of the device body. The automatic fire extinguishing cover can be lowered to cover the stove when the stove catches fire, so that the stove area is in a vacuum environment, the flame is quickly organized to burn, and the fire extinguishing effect is good. Since the fire extinguishing cover covers the stove, only a small amount of water is needed without splashing, which saves costs and facilitates subsequent processing.

[0004] The fire extinguishing cover provided in the above patent is a hollow structure, and there is no baffle at the bottom. The fire extinguishing cover is provided directly above the stove, which is convenient for extinguishing fire, so that the stove can be used normally when there is no fire. Therefore, long-term use of the stove will produce more oil smoke. The oil smoke goes upward, so the combustion of oil substances produces fine and loose oil smoke that adheres to the inside of the fire extinguishing cover and the nozzle. There are more thermal oxidation decomposition products in the oil smoke, which will cause the water mist nozzle to be blocked over a long period of time. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that oil smoke affects a water mist nozzle and a fire extinguishing cover, and proposes a kitchen stove fire extinguishing device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A kitchen stove fire extinguishing device includes a housing with a liquid supply assembly, and further includes: a protective cover that is liftably arranged on the housing. Among them, an atomizing nozzle is arranged inside the protective cover, the spraying end of the atomizing nozzle faces the opening end of the protective cover, and the atomizing nozzle is communicated with the output end of the liquid supply assembly; a protective plate that is rotatably connected to the opening end of the protective cover. Among them, a rotating shaft is mainly rotatably connected inside the protective cover, a limiting plate is fixedly connected to the rotating shaft, through holes are formed in the limiting plate, and when the limiting plate and the through holes are arranged in a dislocation manner, the limiting plate can abut against the outer wall of the protective plate; a driving part for driving the rotating shaft to rotate.

[0008] To facilitate applying an elastic force to the protective plate, preferably, a connecting seat is fixedly connected to the outer wall of the protective cover, a first fixing block is fixedly connected to the top of the connecting seat, the protective plate is rotatably connected to the connecting seat through a connecting plate, a second fixing block is fixedly connected to the bottom of the connecting plate, and the first fixing block is connected to the second fixing block through an elastic band.

[0009] To facilitate connecting the atomizing nozzle, preferably, a support plate is fixedly connected to the inner wall of the protective cover, and the atomizing nozzle is fixedly connected to the support plate.

[0010] To facilitate rotating the rotating shaft, further, the driving part includes a driving machine fixedly connected to the support plate, and the rotating shaft is fixedly connected to the output end of the driving machine.

[0011] To drive the movable plate to move up and down in the housing, preferably, a sliding groove is formed in the housing, a reciprocating lead screw is rotatably connected in the sliding groove, a movable plate is threadedly connected to the reciprocating lead screw, and the movable plate is in contact with the inner wall of the sliding groove, and the protective cover is fixedly connected to the movable plate.

[0012] To facilitate supplying fire extinguishing liquid to the atomizing nozzle, preferably, the liquid supply assembly includes a liquid storage tank fixedly connected to the housing, a water pump is arranged in the liquid storage tank, the input end of the water pump is communicated with the liquid storage tank through a pipeline, and the output end of the water pump is fixedly connected to the atomizing nozzle through a pipeline.

[0013] To facilitate rotating the protective plate to form an opening of the protective cover, preferably, a smoke sensor and a temperature sensor are respectively arranged on the housing, and the smoke sensor and the temperature sensor are electrically connected to the driving part through a control board.

[0014] Compared with the prior art, the present utility model provides a kitchen stove fire extinguishing device, which has the following beneficial effects:

[0015] 1. The kitchen stove fire extinguishing device blocks the oil smoke generated by the stove through a closed protective plate, so that the fine and loose oil smoke generated by the burning of oil substances adheres to the outer surface of the protective plate, preventing the oil smoke from adhering to the inner wall of the protective cover and the atomizing nozzle, and preventing the thermal oxidation decomposition products in the oil smoke from clogging the atomizing nozzle;

[0016] 2. The kitchen stove fire extinguishing device rotates the shaft to make the through hole on the protective plate coincide with the limit plate. At this time, the rubber band will quickly expand the protective plate toward the outside to form an expansion plate pattern on the outside of the opening end of the protective cover. When the protective cover descends, the protective plate can first be made to abut against the outside of the stove, first intercepting the air outside the stove, so as to reduce the amount of oxygen in the air entering the stove and improve the protective cover's blocking effect on oxygen.

[0017] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. On the one hand, the utility model can block the oil smoke generated by the stove, so that the fine and loose oil smoke generated by the combustion of oil substances adheres to the outer surface of the protective plate, preventing the oil smoke from adhering to the inner wall of the protective cover and the atomizing nozzle, and preventing the thermal oxidation decomposition products in the oil smoke from clogging the atomizing nozzle. On the other hand, when the protective cover is lowered, the protective plate can first be made to collide with the outside of the stove, and the air outside the stove can be intercepted first, so as to reduce the amount of oxygen in the air entering the stove and improve the protective cover's blocking effect on oxygen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a kitchen stove fire extinguishing device proposed by the utility model from a first perspective;

[0019] Figure 2 This is a structural schematic diagram of a kitchen stove fire extinguishing device proposed by the utility model from a second viewing angle;

[0020] Figure 3 This is a schematic structural diagram of a kitchen stove fire extinguishing device proposed by the utility model;

[0021] Figure 4 The utility model is a partial structural diagram of a kitchen stove fire extinguishing device.

[0022] In the figure: 1. shell; 2. movable plate; 3. protective cover; 301. connecting seat; 302. first fixed block; 4. driving machine; 5. support plate; 6. atomizing nozzle; 7. protective plate; 701. connecting plate; 702. second fixed block; 8. rotating shaft; 9. through hole; 10. limit plate; 11. rubber band; 12. slide groove; 13. reciprocating screw rod; 14. smoke sensor; 15. temperature sensor; 16. liquid storage tank. DETAILED DESCRIPTION

[0023] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] Embodiment:

[0026] Referring to Figures 1 - 4 , a kitchen stove fire extinguishing device includes a housing 1 with a liquid supply assembly, and further includes: a protective cover 3 that is liftably arranged on the housing 1. Among them, an atomizing nozzle 6 is arranged in the protective cover 3, the spraying end of the atomizing nozzle 6 faces the opening end of the protective cover 3, and the atomizing nozzle 6 is communicated with the output end of the liquid supply assembly; a protective plate 7 that is rotatably connected to the opening end of the protective cover 3. Among them, a rotating shaft 8 is mainly rotatably connected in the protective cover 3, a limiting plate 10 is fixedly connected to the rotating shaft 8, and a through hole 9 is opened on the limiting plate 10. When the limiting plate 10 and the through hole 9 are misaligned, the limiting plate 10 can abut against the outer wall of the protective plate 7; a driving part for driving the rotating shaft 8 to rotate.

[0027] In addition, a support plate 5 is fixedly connected to the inner wall of the protective cover 3, and the atomizing nozzle 6 is fixedly connected to the support plate 5. The liquid supply assembly can convey the fire extinguishing liquid into the atomizing nozzle 6, so that the atomizing nozzle 6 can spray out a mist state spray, and the spray sprayed by the atomizing nozzle 6 will be sprayed towards the opening end of the protective cover 3, so that the atomizing nozzle 6 sprays out water mist to extinguish the fire of the stove.

[0028] It should be explained that the above-mentioned driving part includes a driving machine 4 fixedly connected to the support plate 5, and the rotating shaft 8 is fixedly connected to the output end of the driving machine 4, and the driving machine 4 can be a motor.

[0029] Moreover, the protective cover 3 can move up and down on the housing 1, so that the protective cover 3 moves towards the stove, covers the stove, reduces the amount of external oxygen intervening, prevents the continuation of the flame, and thus achieves the effect of quickly extinguishing the fire and reducing damage.

[0030] Referring to Figure 2 and Figure 4, a protection plate 7 is also rotatably connected to the open end of the protective cover 3, and the protection plate 7 can block the open end of the protective cover 3. Moreover, the cross-sectional area of the through hole 9 is larger than that of the limiting plate 10. To facilitate the elastic opening of the position of the protection plate 7, a connecting seat 301 is fixedly connected to the outer wall of the protective cover 3. A first fixing block 302 is fixedly connected to the top of the connecting seat 301. The protection plate 7 is rotatably connected to the connecting seat 301 through a connecting plate 701. A second fixing block 702 is fixedly connected to the bottom of the connecting plate 701. The first fixing block 302 is connected to the second fixing block 702 through an elastic band 11.

[0031] When it is necessary to block the open end of the protective cover 3, the protection plate 7 can be rotated at this time so that the through hole 9 on the protection plate 7 coincides with the limiting plate 10. At this time, the elastic band 11 will be stretched to form an elastic effect. Subsequently, the switch of the driving machine 4 is started, so that the driving machine 4 drives the rotating shaft 8 to rotate, and then the positions of the limiting plate 10 and the through hole 9 are staggered and do not coincide. Due to the stretching effect of the elastic band 11, the limiting plate 10 will abut against the outer wall of the protection plate 7, and then the open end of the protective cover 3 can be blocked. When there is no fire and the stove is in normal use, the oil fume will rise upward, and the oil fume generated by the stove will be blocked by the unfolded protection plate 7, so that the thin and loose oil fume generated by the combustion of oily substances adheres to the outer surface of the protection plate 7, preventing the oil fume from adhering to the inner wall of the protective cover 3 and the atomizing nozzle 6, and preventing the phenomenon that the thermal oxidation decomposition products in the oil fume block the atomizing nozzle 6.

[0032] Furthermore, to facilitate the rapid extinguishing of a fire in the stove, a smoke sensor 14 and a temperature sensor 15 are respectively arranged on the outer shell 1. The smoke sensor 14 and the temperature sensor 15 are electrically connected to the driving part through a control board. When the smoke sensor 14 and the temperature sensor 15 detect smoke and excessive temperature, the switch of the driving part can be started, so that it can drive the rotating shaft 8 to rotate, and the water pump is started synchronously.

[0033] To facilitate the lifting and moving of the protective cover 3, a sliding groove 12 is opened on the outer shell 1. A reciprocating lead screw 13 is rotatably connected in the sliding groove 12. A movable plate 2 is threadedly connected to the reciprocating lead screw 13, and the movable plate 2 is in contact with the inner wall of the sliding groove 12. The protective cover 3 is fixedly connected to the movable plate 2, and the reciprocating lead screw 13 can be driven by a driving motor, and the driving motor is electrically connected to the control board and is used in cooperation with the driving part.

[0034] When a stove fire occurs, the open end of the protective cover 3 needs to be quickly unsealed. At this time, the smoke sensor 14 and the temperature sensor 15 will detect the smoke and excessively high temperature. At this time, the driving motor 4 will drive the rotating shaft 8 to rotate, so that the limit plate 10 moves into the through hole 9. During this process, the rubber band 11 will quickly unfold the protective plate 7 toward the outside, so that it forms an expansion plate pattern on the outside of the open end of the protective cover 3. When the protective cover 3 descends, the protective plate 7 can first be made to collide with the outside of the stove, and the air outside the stove is first intercepted, so as to reduce the amount of oxygen in the air entering the stove, thereby improving the oxygen blocking effect of the protective cover 3.

[0035] Furthermore, the above-mentioned liquid supply component includes a liquid storage tank 16 fixedly connected to the outer shell 1, and a water pump is arranged in the liquid storage tank 16. The input end of the water pump is connected with the liquid storage tank 16 through a pipeline, and the output end of the water pump is fixedly connected with the atomizing nozzle 6 through a pipeline. When the protective plate 7 is unfolded toward the outside, during this process, the water pump will transport the fire-extinguishing liquid in the liquid storage tank 16 to the atomizing nozzle 6, so as to cooperate with the protective cover 3 to quickly extinguish the fire on the stove and reduce damage.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A kitchen stove fire extinguishing device, comprising a housing (1) with a liquid supply assembly, characterized in that, It further includes: A protective cover (3) vertically arranged on the housing (1), wherein, an atomizing nozzle (6) is arranged inside the protective cover (3), the spraying end of the atomizing nozzle (6) faces the open end of the protective cover (3), and the atomizing nozzle (6) is communicated with the output end of the liquid supply assembly; A protection plate (7) rotatably connected to the open end of the protective cover (3), wherein, a rotating shaft (8) is mainly rotatably connected inside the protective cover (3), a limiting plate (10) is fixedly connected to the rotating shaft (8), a through hole (9) is formed in the limiting plate (10), and when the limiting plate (10) and the through hole (9) are arranged in a dislocation manner, the limiting plate (10) can abut against the outer wall of the protection plate (7); A driving part for driving the rotating shaft (8) to rotate.

2. The kitchen stove fire extinguishing device according to claim 1, characterized in that, A connecting seat (301) is fixedly connected to the outer wall of the protective cover (3), a first fixing block (302) is fixedly connected to the top of the connecting seat (301), the protection plate (7) is rotatably connected to the connecting seat (301) through a connecting plate (701), a second fixing block (702) is fixedly connected to the bottom of the connecting plate (701), and the first fixing block (302) is connected to the second fixing block (702) through an elastic band (11).

3. The kitchen stove fire extinguishing device according to claim 1, characterized in that, A support plate (5) is fixedly connected to the inner wall of the protective cover (3), and the atomizing nozzle (6) is fixedly connected to the support plate (5).

4. The kitchen stove fire extinguishing device according to claim 3, characterized in that, The driving part includes a driving machine (4) fixedly connected to the support plate (5), and the rotating shaft (8) is fixedly connected to the output end of the driving machine (4).

5. The kitchen stove fire extinguishing device according to claim 1, characterized in that, A chute (12) is formed in the housing (1), a reciprocating lead screw (13) is rotatably connected in the chute (12), a movable plate (2) is threadedly connected to the reciprocating lead screw (13), and the movable plate (2) is in fit with the inner wall of the chute (12), and the protective cover (3) is fixedly connected to the movable plate (2).

6. The kitchen stove fire extinguishing device according to claim 1, characterized in that, The liquid supply assembly includes a liquid storage tank (16) fixedly connected to the housing (1), a water pump is arranged inside the liquid storage tank (16), the input end of the water pump is communicated with the liquid storage tank (16) through a pipeline, and the output end of the water pump is fixedly connected to the atomizing nozzle (6) through a pipeline.

7. The kitchen stove fire extinguishing device according to claim 1, characterized in that, A smoke sensor (14) and a temperature sensor (15) are respectively arranged on the housing (1), and the smoke sensor (14) and the temperature sensor (15) are electrically connected to the driving part through a control board.

Images