CN212662491U

CN212662491U - Automatic fire extinguisher for kitchen

Info

Publication number: CN212662491U
Application number: CN202020739247.6U
Authority: CN
Inventors: 黄森林; 姚勇
Original assignee: Beijing Century Flourishes Kitchen Equipment Co ltd
Current assignee: Beijing Century Flourishes Kitchen Equipment Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2021-03-09
Anticipated expiration: 2030-05-07

Abstract

The utility model relates to an automatic fire extinguishing device for a kitchen, which comprises a lifting component; a water nozzle is fixedly connected to the kitchen ceiling; the water spray head is communicated with the water supply tank; a third electromagnetic valve is arranged on the water supply tank; the smoke sensor is connected with the third electromagnetic valve through a transmission wire; the lifting assembly comprises a mounting frame, a first winding roller, a second winding roller, a motor and a lifting rope; the mounting frame is arranged on one surface of the suspended ceiling, which is far away from the ground, and is fixedly connected with the suspended ceiling; the first winding roller is rotatably supported on the mounting frame; the motor is coaxially and fixedly connected with the first winding roller; the output end of the motor is provided with a driving wheel; the second winding roller is rotatably supported on the mounting frame; one end of the second winding roller, which is positioned at the outer side of the mounting frame, is coaxially and fixedly connected with a driven wheel; a transmission belt is sleeved between the driving wheel and the driven wheel; the lifting rope is wound on the first winding roller, and one end of the lifting rope, which is far away from the first winding roller, is connected with the smoke sensor; the transmission wire is wound on the second winding roller. The utility model has the advantages of more convenient cleaning and maintenance of the smoke sensor.

Description

Automatic fire extinguisher for kitchen

Technical Field

The utility model belongs to the technical field of kitchen fire control safety's technique and specifically relates to a kitchen automatic fire extinguishing device is related to.

Background

Currently, the current practice is. The kitchen is the place with the most open fire in various places such as a home or a restaurant, the space of the kitchen is compact due to more accumulated combustible substances, a large number of large-scale heating devices are arranged in the large-scale kitchen, the power consumption in the kitchen is centralized, the electric load is large, and various dotted lines and cables are compact; the edible oil used during cooking is also a combustible substance, and the gas is also used during cooking, so that a kitchen is a place easy to cause fire; common fire in a kitchen is caused by overhigh oil temperature or fuel gas leakage during cooking, and the property and life safety of people seriously damaged by fire hidden danger is serious, so that the automatic fire extinguishing device is particularly important to be installed in the kitchen, can quickly and automatically sense and extinguish fire when the fire occurs, and provides safety guarantee for people.

An automatic fire extinguishing system special for a kitchen is disclosed in the prior Chinese utility model with the publication number of CN 206518792U; the method comprises the following steps: the fire-fighting spray head, the thermal sensor, the smoke sensor and the controller are arranged on the kitchen ceiling, and the gas electromagnetic valve is arranged on the gas pipeline; the sensor and the smoke sensor are in signal connection with a receiving end of the controller; the gas electromagnetic valve is in signal connection with a control command output end of the controller; the fire-fighting nozzle comprises a top cover and a bottom cover which are sequentially arranged from top to bottom and are rotatably connected, and the top cover is fixedly arranged on a kitchen ceiling; the top cover is internally provided with a communicating pipe and a driving device for driving the bottom cover to rotate along the vertical rotating shaft; the communicating pipe is communicated with the water pipe system, and more than 2 nozzles are arranged on the bottom cover.

The above prior art solutions have the following drawbacks: in practical application, a kitchen is an important place for cooking, so a large amount of impurities such as oil smoke and the like are generated every day, the oil smoke has strong adhesiveness, some dust impurities in the kitchen are added, the oil smoke mixed dust can form a waxy impurity layer on various equipment in the kitchen, for example, a waxy oil smoke layer is accumulated on the wall of a household kitchen at intervals, the impurities such as the oil smoke and the dust can enter a thermal sensor and a smoke sensor difficultly to be avoided, the impurities are accumulated and adhered in the thermal sensor and the smoke sensor, the smoke sensor and the thermal sensor are detection devices with high sensitivity, the impurities such as the oil smoke and the like are adhered on the smoke sensor or the thermal sensor to influence the detection sensitivity and the detection correctness of the impurities, false alarm or non-timely fire alarm is caused, and the oil smoke impurities on an alarm need to be regularly cleaned and maintained, among the above-mentioned technical scheme, thermoinduction ware and smoke sensor all install on the kitchen furred ceiling, because the kitchen furred ceiling is higher, need use tools such as ladders to climb to kitchen furred ceiling department when clearing up thermoinduction ware or smoke sensor, the kitchen space is limited, adds the high altitude clearance and has certain potential safety hazard, therefore clearance maintenance process is comparatively inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a kitchen automatic fire extinguishing device which has the advantage of more convenient cleaning and maintenance of the smoke sensor.

The above object of the present invention is achieved by the following technical solutions:

an automatic fire extinguishing device for a kitchen comprises the kitchen, a cooking bench, a fume hood and a smoke sensor; the kitchen range is arranged in a kitchen, a gas pipeline is arranged in the kitchen, and two ends of the gas pipeline are respectively communicated with a gas supply tank and the kitchen range which are positioned outside the kitchen; the fume hood is positioned above a gas nozzle of the cooking bench and is matched with the cooking bench in size; an air suction opening is arranged on one surface of the oil fume cover facing the gas nozzle and is communicated with the outside through a pipeline; a suspended ceiling is arranged on the roof of the kitchen; the smoke sensor is arranged on the suspended ceiling; the lifting assembly is also included; a water nozzle is fixedly connected to a suspended ceiling of a kitchen; the nozzle of the water spray head faces the ground; a water supply tank is arranged outside the kitchen, and the water spray head is communicated with the water supply tank; a third electromagnetic valve is arranged at the outlet of the water supply tank; a transmission wire connected with the third electromagnetic valve is arranged on the smoke sensor; the lifting assembly comprises a mounting frame, a first winding roller, a second winding roller, a motor and a lifting rope; the mounting frame is arranged on one surface of the suspended ceiling, which is far away from the ground, and is fixedly connected with the suspended ceiling; the first winding roller is rotatably supported on the mounting frame; the motor is coaxially and fixedly connected with the first winding roller; the output end of the motor is provided with a driving wheel; the second winding roller is rotatably supported on the mounting frame; one end of the second winding roller, which is positioned at the outer side of the mounting frame, is coaxially and fixedly connected with a driven wheel; a transmission belt is sleeved between the driving wheel and the driven wheel; the lifting rope is wound on the first winding roller, and one end of the lifting rope, which is far away from the first winding roller, is connected with the smoke sensor; the transmission wire is wound on the second winding roller.

By adopting the technical scheme, when a fire disaster happens due to overhigh oil temperature in the pot during cooking, the smoke sensor receives a smoke signal and transmits the signal to the third electromagnetic valve on the water supply tank, the third electromagnetic valve is opened, and high-pressure water is sprayed out from the water spray head to extinguish the flame in the kitchen; when the smoke sensor needs to be cleaned and maintained, the motor is started, the first winding roller rotates, and the second winding roller is driven to synchronously rotate through transmission of the transmission belt; the lifting rope and the transmission wire are unreeled, and the mounting plate drives the smoke sensor to fall on the ground, so that the smoke sensor can be conveniently cleaned and maintained; after cleaning and maintenance are finished, a motor is started to drive a first winding roller and a second winding roller to wind, a lifting rope and a transmission wire are wound synchronously, and a mounting plate drives a smoke sensor to move upwards to a hanging top; through setting up lifting unit, the people need not climb to furred ceiling department and maintain and clear up the smoke sensor, makes the maintenance and the clearance of smoke sensor more convenient.

The present invention may be further configured in a preferred embodiment as: the ceiling is provided with a mounting plate, and the smoke sensor is arranged on the mounting plate; a mounting opening is formed in the position, corresponding to the mounting plate, of the hoisting top; the lifting assembly further comprises a mounting rod; the mounting rod is obliquely arranged above the mounting opening, and a first guide wheel is rotatably connected to the mounting rod at the center of the mounting opening; the first guide wheel is a grooved wheel; the lifting rope is erected in a groove of the first guide wheel.

Through adopting above-mentioned technical scheme, can fix and guide the position of lifting rope through setting up first guide wheel, reduce the swing of lifting rope, the receiving and releasing of lifting rope is more smooth.

The present invention may be further configured in a preferred embodiment as: a second guide wheel is rotatably connected to the mounting rod below the first guide wheel; the second guide wheel is a grooved wheel; the transmission wire is lapped in the groove of the second guide wheel.

Through adopting above-mentioned technical scheme, can fix and guide the position of transmission line through setting up the second guide wheel, reduce the swing of transmission line, receive and release of transmission line is more smooth.

The present invention may be further configured in a preferred embodiment as: a connecting rib is arranged on one surface of the mounting plate, which is far away from the smoke sensor; the connecting ribs are provided with a plurality of connecting ribs and connected with the corners of the mounting plate, and one ends of the connecting ribs departing from the mounting plate are converged into a point above the center of the mounting plate; the lifting rope is fixedly connected with one end of each connecting rib deviating from the mounting plate.

Through adopting above-mentioned technical scheme, through the splice bar, the lifting rope is when going up and down to the mounting panel, and the point of application of force is in the central point of mounting panel and puts, makes the operation of mounting panel at the lift in-process more steady.

The present invention may be further configured in a preferred embodiment as: a fixing piece is arranged between the smoke sensor and the mounting plate; the fixing piece comprises a connecting rod, a limiting ring and a clamping block; the connecting rod is a cylindrical rod; the limiting ring is arranged at one end of the connecting rod; the clamping block is convexly arranged on the periphery of one end of the connecting rod, which is far away from the limiting ring; a first jack is arranged on the mounting plate, and a second jack communicated with the first jack is arranged on the outer side of the first jack; the shape formed by the arrangement of the first jack and the second jack is matched with the shape formed by the arrangement of the connecting rod and the clamping block; the bottom of the inner side wall of the second jack is provided with a clamping hole communicated with the first jack; the outer side of the smoke sensor is provided with a mounting wing plate, and a mounting hole penetrating through the mounting wing plate is formed in the mounting wing plate of the smoke sensor; the mounting hole is matched with the shape formed by arranging the connecting rod and the clamping block; the mounting passes in the mounting hole on the smoke sensor inserts the first jack and the second jack of mounting panel, and the joint piece of mounting is located the joint hole, makes things convenient for the ann of smoke sensor on the mounting panel to tear open.

By adopting the technical scheme, when the smoke sensor is installed, the installation hole in the installation wing plate corresponds to the first jack and the second jack in the installation plate, then the connecting rod and the clamping block of the fixing piece are aligned to the first jack and the second jack and pressed inwards, when the connecting rod is inserted into the bottom of the first jack, the connecting rod is rotated, the clamping block is rotated to be clamped into the clamping hole, and the smoke sensor is kept stable on the installation plate; when the smoke sensor needs to be replaced, the connecting rod is rotated, the clamping block is switched into the second jack from the clamping hole, and the connecting rod and the clamping block are pulled out of the first jack and the second jack; through setting up the mounting, it is more convenient to make the dismantlement of smoke sensor on the mounting panel to the convenience is changed smoke sensor.

The present invention may be further configured in a preferred embodiment as: the fixed piece also comprises a slide sheet and a pressure spring; the sliding sheet is arranged on the connecting rod and is positioned between the limiting ring and the clamping block; the sliding sheet is in sliding fit with the connecting rod; the compression spring is sleeved between the limiting ring and the sliding sheet; the elastic direction of the pressure spring is parallel to the sliding direction of the sliding sheet.

By adopting the technical scheme, when the smoke sensor is installed, the connecting rod and the clamping block of the fixing piece are aligned with the first inserting hole and the second inserting hole and pressed inwards, the sliding sheet is tightly attached to the installation wing plate of the smoke sensor, the pressure spring contracts under the action of the sliding sheet and the limiting ring, when the smoke sensor needs to be replaced, the connecting rod is rotated, the clamping block is transferred into the second inserting hole from the clamping hole, the connecting rod is driven to move upwards under the action of the pressure spring, and the connecting rod and the clamping block are popped out of the first inserting hole and the second inserting hole; through setting up the mounting, make the dismantlement of smoke sensor on the mounting panel more convenient.

The present invention may be further configured in a preferred embodiment as: the device also comprises a temperature sensor; a fire extinguishing agent nozzle is arranged on one surface of the oil fume cover facing the gas nozzle; a fire extinguishing agent tank is arranged outside the kitchen and is communicated with a fire extinguishing agent nozzle through a pipeline, and a second electromagnetic valve is arranged at the outlet of the fire extinguishing agent tank; the temperature sensor is arranged on one surface of the oil fume cover facing the gas nozzle and is connected with the second electromagnetic valve through an electric wire.

By adopting the technical scheme, when the dish is fried and a fire disaster occurs due to overhigh oil temperature in the pot, the temperature sensor positioned at the fume hood firstly senses a fire disaster signal, then transmits the signal to the second electromagnetic valve on the fire extinguishing agent tank, and the fire extinguishing agent is driven by high pressure to be sprayed out from the fire extinguishing agent nozzle to extinguish the oil fire.

The present invention may be further configured in a preferred embodiment as: a first electromagnetic valve is arranged at the opening of the gas supply tank; the temperature sensor is connected with the first electromagnetic valve through an electric wire.

Through adopting above-mentioned technical scheme, when the temperature-sensing ware of lampblack cover department senses fire signal, give the first solenoid valve on the gas supply jar with the signal transmission, thereby the gas supply is cut off to first solenoid valve closing, and the gas lasts the supply and encourages the intensity of a fire or even explodes when avoiding the conflagration.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the lifting assembly is arranged, so that the smoke sensor is more convenient to clean and maintain;

2. through setting up the mounting, make things convenient for the ann of smoke sensor on the mounting panel to tear open to the convenience is to smoke sensor's change.

Drawings

FIG. 1 is a schematic structural view of an automatic fire extinguishing apparatus for a kitchen;

FIG. 2 is a cross-sectional view of the lifting assembly;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

FIG. 4 is a cross-section taken to show the mounting member in cooperation with the smoke sensor and mounting plate;

figure 5 is an exploded view showing the mounting member in cooperation with the smoke sensor and mounting plate.

In the figure, 1, kitchen; 10. a gas supply tank; 100. a first solenoid valve; 11. a fire suppressant tank; 110. a second solenoid valve; 13. a suspended ceiling; 130. a water spray head; 131. an installation port; 14. a water supply tank; 140. a third electromagnetic valve; 15. mounting a plate; 150. connecting ribs; 151. a first jack; 152. a second jack; 153. a clamping hole; 2. a cooking bench; 20. a gas nozzle; 3. a lampblack hood; 31. a fire suppressant spray head; 4. a temperature sensor; 5. a smoke sensor; 50. a transmission wire; 51. installing wing plates; 510. mounting holes; 6. a lifting assembly; 60. a mounting frame; 61. a first winding roller; 62. a second winding roller; 620. a driven wheel; 63. a motor; 630. a driving wheel; 631. a drive belt; 64. mounting a rod; 640. a first guide wheel; 641. a second guide wheel; 65. a lifting rope; 7. a fixing member; 70. a connecting rod; 71. a limiting ring; 72. a clamping block; 73. sliding blades; 74. and (5) pressing a spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses an automatic fire extinguisher for kitchen, which comprises a kitchen 1, a cooking bench 2, a fume hood 3, a temperature sensor 4, a smoke sensor 5, a lifting component 6 and a fixing component 7; the cooking bench 2 is arranged in the kitchen 1, in the embodiment, the cooking bench 2 is a natural gas cooking bench, a lighting device is arranged in the cooking bench 2, and a plurality of gas nozzles 20 are arranged on the upper surface of the cooking bench 2; a gas pipeline is arranged in the kitchen 1, two ends of the gas pipeline are respectively communicated with a gas supply tank 10 and a cooking bench 2 which are positioned outside the kitchen, and a first electromagnetic valve 100 is arranged at an opening of the gas supply tank 10; the lampblack cover 3 is positioned above the gas nozzle 20 of the cooking bench 2 and is matched with the cooking bench 2 in size; an air suction opening is arranged on one surface of the lampblack hood 3 facing the gas nozzle 20 and is communicated with the outside through a pipeline; a fire extinguishing agent nozzle 31 is arranged on one surface of the lampblack cover 3 facing the gas nozzle 20; a fire extinguishing agent tank 11 is arranged outside the kitchen, the fire extinguishing agent tank 11 is communicated with a fire extinguishing agent nozzle 31 through a pipeline, and a second electromagnetic valve 110 is arranged at the outlet of the fire extinguishing agent tank 11; the fire extinguishing agent tank 11 is filled with the fire extinguishing agent at high pressure, and the fire extinguishing agent tank 11 is used for extinguishing the fire of the edible oil, so that a dry powder fire extinguishing agent or a foam fire extinguishing agent can be used; a foam fire suppressant is used in this example; the temperature sensors 4 are arranged on one side, facing the gas nozzle 20, of the lampblack hood 3, the number of the temperature sensors 4 can be arranged according to the size of the cooking bench 2 in the kitchen 1, and a plurality of cooking benches 2 can be arranged when the cooking benches 2 are large, so that the detection range of the temperature sensors can cover the whole cooking bench 2; the detection head of the temperature detector 4 can adopt a thermocouple, a thermistor and the like, and adopts a thermistor in the embodiment; the temperature sensor 4 is internally provided with an information processing module and is connected with a first electromagnetic valve 100 on the fuel gas supply tank 10 and a second electromagnetic valve 110 on the fire extinguishing agent tank 11 through lines; can set for information processing module, flame distance temperature-sensing ware is far away when normally frying dish, and the temperature is lower, and when the conflagration breaing out, flame can rise, and the temperature of temperature-sensing ware 4 department lasts to rise, and information processing module gives first solenoid valve 100 and second solenoid valve 110 with the signal transmission and controls its switching.

Referring to fig. 1 and 2, a ceiling 13 is arranged on the roof of the kitchen 1, a water nozzle 130 is fixedly connected to the ceiling 13 of the kitchen 1, and the nozzle of the water nozzle 130 faces the ground; a water supply tank 14 is arranged outside the kitchen, water is contained in the water supply tank 14 under high pressure, and the water inlet of the water spray head 130 is communicated with the outlet of the water supply tank 14; a third solenoid valve 140 is provided at the outlet of the water supply tank 14; a mounting plate 15 is arranged on the suspended ceiling 13 of the kitchen 1; the smoke sensor 5 is arranged on the mounting plate 15; the smoke sensor 15 is internally provided with an information processing module and is connected with a third electromagnetic valve 140 on the water supply tank 14 through a line; the lifting assembly 6 is disposed within the ceiling 13 of the galley 1 and is connected to the mounting plate 15.

Referring to fig. 3, a mounting opening 131 is formed in a position corresponding to the mounting plate 15 on the ceiling 13 of the kitchen 1; the lifting assembly 6 comprises a mounting frame 60, a first roller 61, a second roller 62, a motor 63, a mounting rod 64 and a lifting rope 65; the mounting rack 60 is arranged on one surface of the suspended ceiling 13, which is far away from the ground, and is fixedly connected with the suspended ceiling 13; the mounting bracket 60 is U-shaped and the U-shaped opening faces the mounting opening 131; the first winding roller 61 is rotatably supported on the mounting bracket 60; the motor 63 is fixed on the mounting frame 60 and coaxially and fixedly connected with the first winding roller 61; a driving wheel 630 is coaxially and fixedly connected to the output end of the motor 63 and positioned outside the mounting frame 60; the second winding roller 62 is rotatably supported on the mounting frame 60 and is positioned below the first winding roller 61, and a driven wheel 620 is coaxially and fixedly connected to one end of the second winding roller 62, which is positioned outside the mounting frame 60; a transmission belt 631 is sleeved between the driving wheel 630 and the driven wheel 620; the mounting rod 64 is obliquely arranged above the mounting opening 131, and a first guide wheel 640 is rotatably connected to the mounting rod 64 at the center of the mounting opening 131; a second guide wheel 641 is rotatably connected to the mounting lever 64 below the first guide wheel 640; the first guide wheel 640 and the second guide wheel 641 are both grooved wheels with grooved outer peripheries.

Referring to fig. 3, a connecting rib 150 is disposed on a side of the mounting plate 15 away from the smoke sensor 5, the connecting rib 150 may be a reinforcing bar with certain rigidity, and four connecting ribs 150 are provided, and one end of each connecting rib 150 facing the mounting plate 15 is fixedly connected to four corners of the mounting plate 15; one ends of the four connecting ribs 150 departing from the mounting plate 15 are converged into a point above the center of the mounting plate 15; one end of the lifting rope 65 is fixedly connected with the first winding roller 61 and wound on the first winding roller 61, and one end of the lifting rope 65 departing from the first winding roller 61 is fixedly connected with one ends of the four connecting ribs 150 departing from the mounting 15; the lifting rope 65 and the connecting rib 150 can be fixed in a binding or welding mode; the transmission wire 50 on the smoke sensor 5 is wound on the second winding roller 62; the lifting rope 65 is arranged in a groove of the first guide wheel 640; the transmission wire 50 is laid in the groove of the second guide wheel 641.

The implementation principle of the embodiment is as follows: when cooking, when a fire disaster occurs due to overhigh oil temperature in the pot, the temperature sensor 4 positioned at the fume hood 3 firstly senses a fire disaster signal, then transmits the signal to the first electromagnetic valve 100 on the fuel gas supply tank 10 and the second electromagnetic valve 110 on the inactivator tank 11, the first electromagnetic valve 100 is closed to cut off the fuel gas supply, and the continuous fuel gas supply during the fire disaster is avoided to help the fire behavior and even explode; the second electromagnetic valve 110 is opened, and the fire extinguishing agent is driven by high pressure to be sprayed out from the fire extinguishing agent spray head 31 to extinguish the oil fire; when the fire is great and the external inflammable matters are ignited, the smoke sensor 5 receives smoke signals and transmits the signals to the third electromagnetic valve 140 on the water supply tank 14, the third electromagnetic valve 140 is opened, and high-pressure water is sprayed out from the water spray head 130 to extinguish the flame in the kitchen; the temperature sensor 4 is close to the ground, so that the disassembly and the maintenance are convenient; when the smoke sensor 5 needs to be cleaned and maintained, the motor 63 is started, the first winding roller 61 rotates, and the second winding roller 62 is driven to synchronously rotate through the transmission of the transmission belt 631; the lifting rope 65 and the transmission wire 50 are unreeled, and the mounting plate 15 drives the smoke sensor 5 to be lowered to the ground, so that the smoke sensor can be conveniently cleaned and maintained; after cleaning and maintenance are finished, the motor 63 is started to drive the first winding roller 61 and the second winding roller 62 to wind, the lifting rope 65 and the transmission wire 50 are wound synchronously, and the mounting plate 15 drives the smoke sensor 5 to move upwards to the position of the mounting opening 131; the first winding roller 61 drives the second winding roller 62 to wind and unwind synchronously, so that the problems of knotting and the like caused by the fact that the transmission wire 50 cannot be wound in time can be reduced; the position of the lifting rope 65 can be fixed and guided by arranging the connecting rib 150 and the first guide wheel 640, so that the swinging of the lifting rope 65 is reduced, and the winding and unwinding of the lifting rope 65 are smoother; to sum up, through setting up lifting unit 6, the people need not climb 13 departments of furred ceiling and maintain and clear up smoke sensor 5, make smoke sensor 5's maintenance and clearance more convenient.

In practical applications, after oil smoke or dust enters the smoke sensor 5, the oil smoke or dust may adhere to a circuit board or a wire inside the smoke sensor 5, and in addition, steam may be generated during cooking in the kitchen 1, and the steam mixed with the oil smoke and the dust may corrode electrical components inside the smoke sensor 5, so that the smoke sensor 5 needs to be replaced, and the smoke sensor 5 needs to be detached from the mounting plate 15.

To facilitate the installation and removal of the smoke sensor 5 on the mounting plate 15, with reference to fig. 4 and 5, a fixing member 7 is provided between the smoke sensor 5 and the mounting plate 15; the fixing piece comprises a connecting rod 70, a limiting ring 71, a clamping block 72, a sliding sheet 73 and a pressure spring 74; the connecting rod 70 is a cylindrical rod; the limiting ring 71 is arranged on the end face of one end of the connecting rod 70, and the axis of the limiting ring coincides with the axis of the connecting rod 70; the connecting rod 70 and the limiting ring 71 are integrally cast and molded; the clamping block 72 is convexly arranged on the periphery of one end of the connecting rod 70, which is far away from the limiting ring 71, and is fixedly connected with the connecting rod 70; the sliding sheet 72 is arranged on the connecting rod 70 and is positioned between the limiting ring 71 and the clamping block 72; the sliding piece 73 is in sliding fit with the connecting rod 70; the pressure spring 74 is sleeved between the limiting ring 71 and the sliding sheet 73; the elastic direction of the pressure spring 74 is parallel to the sliding direction of the sliding sheet 73; a first jack 151 is formed on the mounting plate 75, and a second jack 152 communicated with the first jack 151 is formed on the outer side of the first jack 151; the shape of the first insertion hole 151 and the second insertion hole 152 is matched with the shape of the connection rod 70 and the clamping block 72; the bottom of the inner side wall of the second jack 152 is provided with a clamping hole 153 communicated with the first jack 151; the outer side of the smoke sensor 5 is provided with a mounting wing plate 51, and the mounting wing plate 51 of the smoke sensor 5 is provided with a mounting hole 510 penetrating through the mounting wing plate 51; the mounting hole 510 is matched with the shape formed by the arrangement of the connecting rod 70 and the clamping block 72; when the smoke sensor 5 is mounted on the mounting plate 15, the fixing member is inserted into the first insertion hole 151 and the second insertion hole 152 of the mounting plate 15 through the mounting hole 510 of the smoke sensor 5, and the catching piece 72 of the fixing member 7 is located in the catching hole 153.

The implementation principle of the fixing piece is as follows: when the smoke sensor 5 is installed, the installation hole 510 on the installation wing plate 51 corresponds to the first insertion hole 151 and the second insertion hole 152 on the installation plate 15, then the connecting rod 70 and the clamping block 72 of the fixing piece 7 are aligned with the first insertion hole 151 and the second insertion hole 152 and pressed inwards, the sliding piece 73 is tightly attached to the installation wing plate 51 of the smoke sensor 5, the pressure spring 74 contracts under the action of the sliding piece 73 and the limiting ring 71, when the connecting rod 70 is inserted into the bottom of the first insertion hole 151, the connecting rod 70 is rotated, the clamping block 72 is rotated to be clamped into the clamping hole 153, and the smoke sensor 5 is kept stable on the installation plate 15; when the smoke sensor 5 needs to be replaced, the connecting rod 70 is rotated, the clamping block 73 is transferred into the second jack 152 from the clamping hole 153, the connecting rod 70 is driven to move upwards under the action of the pressure spring 74, and the connecting rod 70 and the clamping block 72 are ejected out of the first jack 151 and the second jack 152; by providing the fixing member 7, the detachment of the smoke sensor 5 from the mounting plate 15 is facilitated, so that the smoke sensor 5 can be replaced conveniently.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An automatic fire extinguishing device for a kitchen comprises the kitchen (1), a cooking bench (2), a fume hood (3) and a smoke sensor (5); the cooking bench (2) is arranged in the kitchen (1), a gas pipeline is arranged in the kitchen (1), and two ends of the gas pipeline are respectively communicated with a gas supply tank (10) and the cooking bench (2) which are positioned outside the kitchen (1); the lampblack cover (3) is positioned above a gas nozzle (20) of the cooking bench (2) and is matched with the cooking bench (2) in size; an air suction opening is formed in one surface, facing the gas nozzle (20), of the lampblack hood (3), and the air suction opening is communicated with the outside through a pipeline; a suspended ceiling (13) is arranged on the roof of the kitchen (1); the smoke sensor (5) is arranged on the suspended ceiling (13); the method is characterized in that: the lifting device also comprises a lifting component (6); a water spray head (130) is fixedly connected to a suspended ceiling (13) of the kitchen (1); the nozzle of the water nozzle (130) faces the ground; a water supply tank (14) is arranged outside the kitchen (1), and a water spray head (130) is communicated with the water supply tank (14); a third electromagnetic valve (140) is arranged at the outlet of the water supply tank (14); a transmission wire (50) connected with the third electromagnetic valve (140) is arranged on the smoke sensor (5); the lifting assembly (6) comprises a mounting frame (60), a first winding roller (61), a second winding roller (62), a motor (63) and a lifting rope (65); the mounting rack (60) is arranged on one surface of the suspended ceiling (13) deviating from the ground and is fixedly connected with the suspended ceiling (13); the first winding roller (61) is rotatably supported on the mounting frame (60); the motor (63) is coaxially and fixedly connected with the first winding roller (61); the output end of the motor (63) is provided with a driving wheel (630); the second winding roller (62) is rotatably supported on the mounting frame (60); one end of the second winding roller (62) positioned at the outer side of the mounting frame (60) is coaxially and fixedly connected with a driven wheel (620); a transmission belt (631) is sleeved between the driving wheel (630) and the driven wheel (620); the lifting rope (65) is wound on the first winding roller (61), and one end of the lifting rope (65) departing from the first winding roller (61) is connected with the smoke sensor (5); the transmission wire (50) is wound on a second winding roller (62).

2. An automatic fire extinguishing apparatus for kitchen according to claim 1, characterized in that: a mounting plate (15) is arranged on the suspended ceiling (13), and the smoke sensor (5) is arranged on the mounting plate (15); a mounting opening (131) is formed in the position, corresponding to the mounting plate (15), of the suspended ceiling (13); the lifting assembly (6) further comprises a mounting rod (64); the mounting rod (64) is obliquely arranged above the mounting opening (131), and a first guide wheel (640) is rotatably connected to the mounting rod (64) at the center of the mounting opening (131); the first guide wheel (640) is a grooved wheel; the lifting rope (65) is erected in a groove of the first guide wheel (640).

3. An automatic fire extinguishing apparatus for kitchen according to claim 2, characterized in that: a second guide wheel (641) is rotatably connected to the mounting rod (64) below the first guide wheel (640); the second guide wheel (641) is a grooved wheel; the transmission wire (50) is laid in a groove of the second guide wheel (641).

4. An automatic fire extinguishing apparatus for kitchen according to claim 2, characterized in that: a connecting rib (150) is arranged on one surface of the mounting plate, which is far away from the smoke sensor; the connecting ribs (150) are provided with a plurality of connecting ribs and are connected with the corners of the mounting plate (15), and one ends of the connecting ribs (150) departing from the mounting plate (15) are converged into a point above the center of the mounting plate (15); the lifting rope (65) is fixedly connected with one end of each connecting rib (150) deviating from the mounting plate (15).

5. An automatic fire extinguishing apparatus for kitchen according to claim 3, characterized in that: a fixing piece (7) is arranged between the smoke sensor (5) and the mounting plate (15); the fixing piece (7) comprises a connecting rod (70), a limiting ring (71) and a clamping block (72); the connecting rod (70) is a cylindrical rod; the limiting ring (71) is arranged at one end of the connecting rod (70); the clamping block (72) is convexly arranged on the periphery of one end, away from the limiting ring (71), of the connecting rod (70); a first jack (151) is formed in the mounting plate (15), and a second jack (152) communicated with the first jack (151) is formed in the outer side of the first jack (151); the shape formed by the arrangement of the first insertion hole (151) and the second insertion hole (152) is matched with the shape formed by the arrangement of the connecting rod (70) and the clamping block (72); the bottom of the inner side wall of the second jack (152) is provided with a clamping hole (153) communicated with the first jack (151); a mounting wing plate (51) is arranged on the outer side of the smoke sensor (5), and a mounting hole (510) penetrating through the mounting wing plate (51) is formed in the mounting wing plate (51) of the smoke sensor (5); the mounting hole (510) is matched with the shape formed by the arrangement of the connecting rod (70) and the clamping block (72); the fixing piece (7) penetrates through a mounting hole (510) in the smoke sensor (5) and is inserted into a first jack (151) and a second jack (152) of the mounting plate (15), and a clamping block (72) of the fixing piece (7) is located in a clamping hole (153).

6. An automatic fire extinguishing apparatus for kitchen according to claim 5, characterized in that: the fixed piece (7) further comprises a slide sheet (73) and a pressure spring (74); the sliding piece (73) is arranged on the connecting rod (70) and is positioned between the limiting ring (71) and the clamping block (72); the sliding sheet (73) is in sliding fit with the connecting rod (70); the pressure spring (74) is sleeved between the limiting ring (71) and the sliding sheet (73); the elastic direction of the pressure spring (74) is parallel to the sliding direction of the slide sheet (73).

7. An automatic fire extinguishing apparatus for kitchen according to claim 1, characterized in that: also comprises a temperature sensor (4); a fire extinguishing agent nozzle (31) is arranged on one surface of the lampblack hood (3) facing the gas nozzle (20); a fire extinguishing agent tank (11) is arranged outside the kitchen (1), the fire extinguishing agent tank (11) is communicated with a fire extinguishing agent nozzle (31) through a pipeline, and a second electromagnetic valve (110) is arranged at the outlet of the fire extinguishing agent tank (11); the temperature sensor (4) is arranged on one surface of the oil fume cover (3) facing the gas nozzle (20) and is connected with the second electromagnetic valve (110) through an electric wire.

8. An automatic fire extinguishing apparatus for kitchen according to claim 7, characterized in that: a first electromagnetic valve (100) is arranged at the opening of the gas supply tank (10); the temperature sensor (4) is connected with the first electromagnetic valve (100) through an electric wire.