Fireproof range hood for commercial kitchen

Abstract

The utility model provides a commercial kitchen fireproof range hood, which relates to the technical field of range hoods and comprises a range hood body, a smoke exhaust pipe is fixed on the range hood body, a fireproof component is arranged on the range hood body and comprises a dry powder extinguisher, and the output end of the dry powder extinguisher is fixedly connected with a pipeline. When a fire occurs in the commercial kitchen, the glass tube is fixed in the second stop block, organic solutions with different expansion coefficients are contained in the glass tube, the glass tube is broken after the organic solutions are subjected to thermal expansion at different temperatures, and after the glass tube is broken, the spraying head is fixed to the end, away from the dry powder fire extinguisher, of the glass tube, and the spraying head is fixed to the bottom of the hollow tube. The first stop block descends due to gravity, so that dry powder in the dry powder fire extinguisher enters the hollow pipe through the pipeline and is sprayed out from the through hole formed in the spraying head, flame is completely extinguished through the dry powder, and the technical problem that automatic fire extinguishment cannot be achieved when a fire occurs in a commercial kitchen is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a fire-proof range hood for commercial kitchens. Background Art

[0002] The development of commercial kitchen fireproof range hoods not only focuses on improving the efficiency of oil fume removal, but also includes technical improvements and innovations in intelligent control, safety improvement, environmental protection purification, and easy cleaning and maintenance. With the continuous advancement of technology, commercial kitchen range hoods will be more intelligent, safe and environmentally friendly in the future.

[0003] The existing patent (publication number: CN220551973U) proposes a range hood, which includes a body and an oil guide assembly. The body is provided with a first air inlet and two second air inlets, and the two second air inlets are symmetrically distributed on both sides of the first air inlet; the oil guide assembly includes an oil guide plate and two side plates, the two side plates are respectively connected to the two sides of the oil guide plate, the oil guide plate is located at the air inlet end of the first air inlet, and the side plate is formed by bending and extending the edge of the oil guide plate toward the direction of the second air inlet. The utility model can allow the oil smoke to smoothly enter the second air inlet, making the smoke guide smoother and enhancing the smoking effect of the range hood.

[0004] However, the existing range hoods cannot meet the fire prevention function. The kitchen is one of the main places where fire occurs in home and commercial environments. Grease accumulation and high-temperature cooking may cause fires. Range hoods without fire prevention and fire extinguishing functions cannot suppress or extinguish flames in the early stages, thereby increasing the risk of fire. In an emergency situation where a kitchen fire occurs, if there is no immediately available fire extinguishing function, the fire will spread, increasing the risk of casualties and property losses. Therefore, the utility model proposes a commercial kitchen fire prevention range hood to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to provide a fire-proof range hood for commercial kitchens.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a commercial kitchen fireproof range hood, comprising a range hood body, a smoke exhaust pipe is fixed on the range hood body, and a fireproof component is arranged on the range hood body;

[0007] The fire protection assembly includes a dry powder fire extinguisher, the output end of the dry powder fire extinguisher is fixedly connected to a pipe, the end of the pipe away from the dry powder fire extinguisher is fixedly connected to a hollow tube, a spray head is fixed to the bottom of the hollow tube, a limiting groove is provided on the spray head, a first blocking block is slidably connected in the limiting groove, a through hole is provided on the spray head, a second blocking block is arranged at the bottom of the spray head, and a glass tube is arranged in the second blocking block.

[0008] As a preferred embodiment of a fireproof range hood for commercial kitchens, the hollow tube is fixed on the range hood body, and the hollow tube is arranged in the smoke exhaust pipe.

[0009] The beneficial effect of adopting the above further solution is: because the hollow tube is fixed on the range hood body, and the hollow tube is arranged in the smoke exhaust pipe, the fire protection component as a whole can be supported and fixed on the range hood body.

[0010] As a preferred embodiment of a fireproof range hood for commercial kitchens, the hole arranged at the bottom of the hollow tube is interconnected with the limiting groove.

[0011] The beneficial effect of adopting the above further scheme is that since the holes and the limiting grooves arranged at the bottom of the hollow tube are interconnected, the dry powder in the hollow tube can flow from the interconnected holes and the limiting grooves into the spray head, so that the dry powder can be sprayed out from the support frame.

[0012] As a preferred embodiment of a commercial kitchen fireproof range hood, the second blocking block is threadedly connected to the spray head, and an organic solution is arranged in the glass tube.

[0013] The beneficial effect of adopting the above further scheme is: since the second blocking block is threadedly connected to the spray head and an organic solution is arranged in the glass tube, when the fire-proof component is extinguished, the glass tube in the second blocking block is broken, and the second blocking block can be unscrewed from the spray head by means of a threaded connection, and a new glass tube can be replaced, so that the fire-proof component can continue to be used.

[0014] As a preferred embodiment of a fireproof range hood for commercial kitchens, a support frame is fixed on the smoke exhaust pipe, and the dry powder fire extinguisher is arranged on the support frame.

[0015] The beneficial effect of adopting the above further scheme is: through the setting of the support frame, the dry powder fire extinguisher can be fixed on the dry powder fire extinguisher, which plays a role of supporting and fixing the dry powder fire extinguisher, and the dry powder fire extinguisher is placed upside down at the spraying point, which makes it more convenient to discharge the dry powder in the dry powder fire extinguisher and achieve a better fire extinguishing effect.

[0016] As a preferred embodiment of a fireproof range hood for commercial kitchens, a smoke guide plate is fixed in the smoke exhaust pipe, and the number of the smoke guide plates is two.

[0017] The beneficial effect of adopting the above further solution is that the direction and speed of the airflow can be improved by the smoke guide plate arranged in the smoke exhaust pipe, thereby improving the capture rate and emission efficiency of the oil smoke.

[0018] Compared with the prior art, the advantages and positive effects of the utility model are:

[0019] When a fire occurs in a commercial kitchen, the glass tube fixed in the second blocking block contains organic solutions with different expansion coefficients. When the organic solutions expand due to heat at different temperatures, the glass tube breaks. When the glass tube breaks, the first blocking block drops due to gravity, so that the dry powder in the dry powder fire extinguisher passes through the pipeline to the hollow tube and is sprayed out from the through hole provided on the spray head, so that the dry powder completely extinguishes the flame, thereby solving the technical problem that the commercial kitchen cannot automatically extinguish the fire when a fire occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a fire-proof range hood for commercial kitchens according to the utility model;

[0021] Figure 2 This is a cross-sectional view of the exhaust pipe structure of a fire-proof range hood for commercial kitchens according to the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of a fireproof component of a fireproof range hood for commercial kitchens according to the utility model;

[0023] Figure 4 The utility model is a cross-sectional view of the fireproof component structure of a fireproof range hood for commercial kitchens.

[0024] Reference numerals

[0025] 1. Range hood body; 2. Smoke exhaust pipe; 3. Fire protection component; 31. Dry powder fire extinguisher; 32. Pipe; 33. Hollow pipe; 34. Spray head; 35. Limiting groove; 36. First blocking block; 37. Through hole; 38. Second blocking block; 39. Glass tube; 4. Support frame; 5. Smoke guide plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-4 As shown, a fireproof range hood for commercial kitchens comprises a range hood body 1, a smoke exhaust pipe 2 is fixed on the range hood body 1, and a fireproof component 3 is arranged on the range hood body 1;

[0028] The fire protection component 3 includes a dry powder fire extinguisher 31, the output end of the dry powder fire extinguisher 31 is fixedly connected to a pipe 32, the end of the pipe 32 away from the dry powder fire extinguisher 31 is fixedly connected to a hollow tube 33, a spray head 34 is fixed at the bottom of the hollow tube 33, a limiting groove 35 is provided on the spray head 34, a first blocking block 36 is slidably connected in the limiting groove 35, a through hole 37 is provided on the spray head 34, a second blocking block 38 is provided at the bottom of the spray head 34, and a glass tube 39 is provided in the second blocking block 38. The key to the design of the commercial kitchen fire prevention and control system is that it can quickly respond to fire and effectively extinguish the fire source to ensure the safety of personnel and facilities. In this system, the glass tube 39 and the organic solution inside it act as temperature sensors. This organic solution is selected because it has the characteristic of being able to expand rapidly at a specific high temperature. Once a fire occurs, the local temperature rises sharply, and the volume of the solution expands to a critical point, causing the glass tube 39 to rupture. After the glass tube 39 ruptures, the first blocking block 36 loses its restraint and moves in the direction of gravity. No complex electronic sensing equipment is required, reducing system complexity and maintenance costs. With the displacement of the first blocking block 36, the dry powder in the dry powder fire extinguisher 31 is released, and the dry powder is transported to the hollow tube 33 through the pipeline 32 and accurately sprayed out through the through hole 37 on the spray head 34. The dry powder quickly suppresses the flame with its coverage and chemical properties, effectively controls and extinguishes the initial fire source, and prevents the fire from spreading, thereby solving the technical problem that commercial kitchens cannot automatically extinguish fires when fires occur.

[0029] In the above scheme, there is still a problem that when the exhaust pipe 2 is exhausting oil smoke, the oil smoke cannot be discharged quickly, and the oil smoke will flow back. Figure 1-2 As shown: the hollow tube 33 is fixed on the range hood body 1, and the hollow tube 33 is arranged in the exhaust pipe 2. Since the hollow tube 33 is fixed on the range hood body 1 and the hollow tube 33 is arranged in the exhaust pipe 2, the fire protection component 3 as a whole can be supported and fixed on the range hood body 1, and the hole arranged at the bottom of the hollow tube 33 is interconnected with the limiting groove 35. Since the hole arranged at the bottom of the hollow tube 33 is interconnected with the limiting groove 35, the dry powder in the hollow tube 33 can flow from the interconnected hole and the limiting groove 35 to the spray head 34, so that the dry powder can be sprayed out from the through hole 37;

[0030] like Figure 4 As shown, the second blocking block 38 is threadedly connected to the spray head 34, and an organic solution is arranged in the glass tube 39. Since the second blocking block 38 is threadedly connected to the spray head 34, and the glass tube 39 is arranged in the organic solution, when the fire prevention component 3 is extinguished, the glass tube 39 in the second blocking block 38 is broken, and the second blocking block 38 is screwed off from the spray head 34 by a threaded connection method, and a new glass tube 39 can be replaced, so that the fire prevention component 3 can continue to be used;

[0031] like Figure 1-2As shown, a support frame 4 is fixed on the smoke exhaust pipe 2, and a dry powder fire extinguisher 31 is arranged on the support frame 4. Through the support frame 4, the dry powder fire extinguisher 31 can be fixed on the dry powder fire extinguisher 31, so as to support and fix the dry powder fire extinguisher 31. The dry powder fire extinguisher 31 is placed upside down at the spraying point, which is more convenient for the discharge of dry powder in the dry powder fire extinguisher 31 and achieves a better fire extinguishing effect. A smoke guide plate 5 is fixed in the smoke exhaust pipe 2. There are two smoke guide plates 5. The smoke guide plates 5 arranged in the smoke exhaust pipe 2 can improve the direction and speed of the airflow, thereby improving the capture rate and emission efficiency of oil smoke.

[0032] Working principle:

[0033] like Figure 1-4 As shown, when a fire occurs in a commercial kitchen, the glass tube 39 and the organic solution inside it act as a temperature sensor. This organic solution is selected because it has the characteristic of being able to expand rapidly at a specific high temperature. Once a fire occurs, the local temperature rises sharply, and the volume of the solution expands to a critical point, causing the glass tube 39 to rupture. After the glass tube 39 ruptures, the first blocking block 36 loses its restraint and moves in the direction of gravity. As the first blocking block 36 moves, the dry powder in the dry powder fire extinguisher 31 is released, and the dry powder is transported to the hollow tube 33 through the pipeline 32 and accurately sprayed out through the through hole 37 on the spray head 34. The dry powder quickly suppresses the flame with its coverage and chemical properties, effectively controls and extinguishes the initial fire source, and prevents the fire from spreading. After the fire is successfully extinguished, check and maintain the fire protection components 3. It is crucial that the second blocking block 38 and the sprinkler head 34 are connected by threads, which provides a convenient way of maintenance and replacement. The glass tube 39, as a fragile component, will rupture due to the increase in internal pressure at high temperature, releasing the internal organic solution to help extinguish the fire. Once the glass tube 39 is damaged, the damaged glass tube 39 can be simply removed by unscrewing the second blocking block 38 and replaced with a new glass tube 39, ensuring that the fire protection system can be refilled with organic solution and remain on standby. The design of the smoke exhaust system is crucial for the kitchen because it helps maintain air quality and reduce the impact of oil smoke on the environment and human health. By arranging a smoke guide plate 5 in the smoke exhaust pipe 2, the direction of the airflow can be guided and controlled, and the speed and stability of the airflow can be optimized.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A fire-proof range hood for commercial kitchens, characterized in that: It comprises a range hood body (1), a smoke exhaust pipe (2) is fixed on the range hood body (1), and a fire prevention component (3) is arranged on the range hood body (1); The fire protection assembly (3) comprises a dry powder fire extinguisher (31), the output end of the dry powder fire extinguisher (31) is fixedly connected to a pipe (32), one end of the pipe (32) away from the dry powder fire extinguisher (31) is fixedly connected to a hollow tube (33), a spray head (34) is fixed at the bottom of the hollow tube (33), a limiting groove (35) is provided on the spray head (34), a first blocking block (36) is slidably connected in the limiting groove (35), a through hole (37) is provided on the spray head (34), a second blocking block (38) is provided at the bottom of the spray head (34), and a glass tube (39) is provided in the second blocking block (38).

2. A commercial kitchen fireproof range hood according to claim 1, characterized in that: The hollow tube (33) is fixed on the range hood body (1), and the hollow tube (33) is arranged in the smoke exhaust pipe (2).

3. The commercial kitchen fireproof range hood according to claim 1, characterized in that: The hole arranged at the bottom of the hollow tube (33) and the limiting groove (35) are communicated with each other.

4. The commercial kitchen fireproof range hood according to claim 1, characterized in that: The second blocking block (38) is threadedly connected to the spray head (34), and an organic solution is arranged in the glass tube (39).

5. The commercial kitchen fireproof range hood according to claim 1, characterized in that: A support frame (4) is fixed on the smoke exhaust pipe (2), and the dry powder fire extinguisher (31) is arranged on the support frame (4).

6. The commercial kitchen fireproof range hood according to claim 1, characterized in that: A smoke guide plate (5) is fixed inside the smoke exhaust pipe (2), and the number of the smoke guide plates (5) is two.

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