CN110686284B

CN110686284B - Energy-saving and environment-friendly cooking bench

Info

Publication number: CN110686284B
Application number: CN201810774682.XA
Authority: CN
Inventors: 吴丹
Original assignee: Ningbo University
Current assignee: Ningbo University
Priority date: 2018-07-08
Filing date: 2018-07-08
Publication date: 2021-03-26
Anticipated expiration: 2038-07-08
Also published as: CN110686284A

Abstract

An energy-saving and environment-friendly cooking bench belongs to the technical field of kitchen burners and solves the problems of heat energy recovery and efficient oil smoke removal in waste gas. The method is characterized in that: the energy-saving environment-friendly cooking bench comprises an oil fume collecting cover, an exhaust gas circulating channel, a gas combustion cooker, a retreatment system and an exhaust device; a centrifugal fan is arranged in the oil fume collecting cover, and a cooling water tank is arranged in the retreatment system; the cooker divides the cooking bench into an oil smoke area and a combustion area, and after the oil smoke rises to the oil smoke collecting cover, the centrifugal fan separates the oil smoke into concentrated oil smoke and waste gas; the concentrated oil smoke flows back to a combustion area to be oxidized to generate high-temperature carbon dioxide, carbon monoxide, water and a small amount of oxygen-containing organic matters, the high-temperature carbon dioxide, the carbon monoxide, the water and the small amount of oxygen-containing organic matters enter a retreatment system to transfer heat energy to a water tank, warm water in the water tank can be reused, the small amount of oxygen-containing organic matters are cooled and condensed to liquid oil at the periphery of the water tank, oil smoke in the gas; the waste gas returns to the smoke area again to supplement the rising gas flow on the cooker, thus forming circulation; is suitable for household use.

Description

Energy-saving and environment-friendly cooking bench

Technical Field

The invention belongs to the technical field of kitchen burners, and particularly relates to an energy-saving and environment-friendly burner.

Background

A large amount of oil smoke is generated in catering manufacturing, and the oil smoke is often directly discharged outdoors, so that the environment is seriously polluted. Particulate matters and Volatile Organic Compounds (VOCs) consisting of liquid oil droplets and solid particulate matters in the oil smoke cause great harm to human bodies, and are a great carcinogenic pollution source, so that purification and treatment of the oil smoke are urgent. At present, people generally use a mechanical purification method, an electrostatic deposition method, a catalytic combustion method and the like to treat catering oil fume, but a plurality of methods respectively have the problems of low purification rate, high operation difficulty, high manufacturing cost and the like, and are difficult to popularize and popularize.

Therefore, there is a need to develop a cooking bench device suitable for the people to use, which has high oil fume purifying efficiency, simple operation, low product cost and high heat energy utilization rate of gas, and brings beneficial effect to the improvement of air quality.

Disclosure of Invention

The invention aims to provide a cooking bench which uses a direct combustion method to oxidize oil smoke, further condenses the incompletely oxidized high-temperature oil smoke gas into oil drops through cooling and recovers heat energy, aiming at the limitation of technical equipment for purifying the oil smoke in kitchens at home and abroad.

The invention adopts the following scheme to realize the purpose of the invention:

an energy-saving and environment-friendly cooking bench comprises an oil fume collecting cover 1, an exhaust gas circulating channel 2, a gas combustion cooker 3, a retreatment system 4 and an exhaust device 5; the oil fume collecting cover 1 is arranged on the gas combustion cooker 3, the retreatment system 4 is arranged at the back of the gas combustion cooker 3, and the exhaust device 5 is arranged at the upper end of the retreatment system 4.

The oil fume collecting cover 1 is provided with an outer cover 1-1 and an inner container 1-2, the upper end of the inner container 1-2 is provided with an inverted V-shaped waste gas collecting cover 1-2-1, the lower end of the inner container is provided with a supporting barrel 1-2-2, the upper end of the inner container 1-2 is provided with a centrifugal fan 1-3, the wall surface of the upper end of the supporting barrel 1-2-2 is provided with a concentrated oil smoke overflow port 1-4, a gap between the outer cover 1-1 and the inner container 1-2 is set to be a concentrated oil smoke backflow channel 1-5, a concentrated oil smoke one-way circulation valve 1-6 and a concentrated oil smoke outflow port 1-7 are arranged in the concentrated oil smoke backflow channel 1-5 at the bottom of the outer cover 1-1 and the inner container 1-2, and the inner edge at the bottom of the inner container 1-2. The thick oil smoke flows from the thick oil smoke overflow port 1-4 to the thick oil smoke backflow channel 1-5 and flows into the gas combustion area from the thick oil smoke flow outlet 1-7 through the thick oil smoke one-way flow valve 1-6.

The oil fume collecting cover 1 is characterized in that C-shaped openings 1-9 are orderly formed in the outer cover 1-1 and the inner container 1-2 in a working area facing personnel.

The waste gas circulating channel 2 comprises a waste gas circulating pipeline 2-1 and a waste gas uniform spreader 2-2; the waste gas circulation pipeline 2-1 is in a C shape and is placed on the back of the oil smoke collecting cover 1, the upper end of the waste gas circulation pipeline 2-1 is communicated with the top end of the waste gas collecting cover 1-2-1, and the lower end is communicated with the waste gas uniform distributor 2-2; the waste gas uniform diffuser 2-2 is arranged at the lowest end of the inner wall of the supporting barrel 1-2-2 of the inner container 1-2 and is tightly attached to the inner wall of the supporting barrel 1-2-2. The waste gas flows through the waste gas circulation pipeline 2-1 from the top end of the waste gas collecting cover 1-2-1 and flows out to the periphery of the pot from the waste gas uniform diffuser 2-2.

The gas combustion cooker 3 comprises a gas pipe 3-1, a combustion-supporting gas input pipe 3-2 and a gas combustor 3-3; the gas combustion stove 3 is arranged under the oil smoke collecting cover 1, and the outer cover 1-1 and the inner container 1-2 are tightly buckled at the upper port of the gas combustion stove 3.

The reprocessing system 4 comprises a burnt gas outlet 4-1, a burnt gas collecting channel 4-2, a burnt gas collecting pipeline 4-3, a burnt gas collecting furnace 4-4 and a heat energy recovery water tank 4-5; the retreatment system 4 is arranged at the back of the oil fume collecting cover 1 and the gas combustion cooker 3, the heat energy recovery water tank 4-5 is arranged inside the burnt gas collecting furnace 4-4, the burnt gas outlet 4-1 is arranged at the periphery of the upper end of the gas combustion cooker 3, and the burnt gas collecting pipeline 4-3 is tightly buckled with the outer wall of the upper end of the gas combustion cooker 3.

The heat energy recovery water tank 4-5 comprises a water tank 4-5-1, a cold water input pipe 4-5-2, a hot water output pipe 4-5-3, a waste oil receiving hopper 4-5-4 and a pointed cone group 4-5-5; the water tank 4-5-1 is a sealed barrel, and the lower end of the water tank is a cone; the waste oil receiving hopper 4-5-4 is arranged right below the cone of the water tank 4-5-1; the pointed cone group 4-5-5 is tightly fixed on the outer surface of the water tank 4-5-1.

The exhaust device 5 comprises a gas collecting cover 5-1, an exhauster 5-2 and an exhaust pipe 5-3; the lower port of the gas collecting hood 5-1 closely covers the upper port of the burnt gas collecting furnace 4-4.

The invention has the beneficial effects that:

when the boiler is used, a cooking bench is divided into an oil smoke area and a combustion area, generated oil smoke gas rises to the upper end of an oil smoke collecting cover 1, under the action of a centrifugal fan 1-3, oil smoke is thrown to the edge of an inner container and flows back to the combustion area through a thick oil smoke overflow port 1-4, the oil smoke gas is basically oxidized after being combusted to generate high-temperature carbon dioxide, carbon monoxide, water and a small amount of oxygen-containing organic matters, after entering a retreatment system 4, the high-temperature gas transmits heat energy to a water tank, and the temperature of water in the water tank is increased; a small amount of incompletely oxidized high-temperature oxygen-containing organic matters are condensed into liquid oil at the periphery of the cooling water tank, so that oil smoke in gas is further removed, the purification rate is improved, heat energy is recovered, the use cost of the cooking bench is low, the operation is convenient, the continuous use is realized, and the design purpose is achieved.

Drawings

FIG. 1 is a schematic view of the overall structure of the energy-saving and environment-friendly cooking bench

FIG. 2-a is a schematic view of the structure of the energy-saving and environment-friendly cooking bench gas collecting device of the present invention

FIG. 2-b is a sectional view showing the internal structure of the energy-saving and environment-friendly cooking bench gas collecting device according to the present invention

FIG. 3-a is a schematic view of the structure of the energy-saving and environment-friendly gas combustion range of the present invention

FIG. 3-b is a sectional view of the internal structure of the energy-saving and environment-friendly gas combustion range of the present invention

FIG. 4 is an exploded view of the energy-saving and environment-friendly cooking bench waste gas reprocessing system of the present invention

FIG. 5 is a schematic view of the energy-saving and environment-friendly heat energy recovery water tank of the cooking bench of the present invention

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

the invention relates to an energy-saving environment-friendly cooking bench, which comprises an oil fume collecting cover 1, an exhaust gas circulating channel 2, a gas combustion cooker 3, a retreatment system 4 and an exhaust device 5; the oil fume collecting cover 1 is arranged on the combustion cooker 3, the retreatment system 4 is arranged at the back of the gas combustion cooker 3, the exhaust device 5 is arranged at the upper end of the retreatment system 4, and the two energy-saving and environment-friendly cooking benches are connected into a whole. As shown in fig. 1.

According to the energy-saving and environment-friendly cooking bench, oil smoke generated when a cooker is used is collected to the oil smoke collecting cover 1 and is separated into thick oil smoke and waste gas, the thick oil smoke returns to a combustion area of a gas combustion cooker 3 and is basically oxidized to generate high-temperature carbon dioxide, carbon monoxide, water and a small amount of oxygen-containing organic matters, after the thick oil smoke enters a retreatment system 4, the high-temperature gas transmits heat energy to a water tank, and the temperature of water in the water tank is increased; a small amount of incompletely oxidized high-temperature oxygen-containing organic matters are condensed into liquid oil at the periphery of the cooling water tank, so that oil smoke in the gas is further removed, the purification rate is improved, and meanwhile, heat energy is recovered; the waste gas returns to the waste gas uniform diffuser 2-2, flows out around the pot, and is combined with hot oil smoke in the pot to rise to form circulation.

Example 1

The invention relates to an energy-saving and environment-friendly cooking bench oil fume collecting cover 1 which is provided with an outer cover 1-1 and an inner container 1-2, wherein the upper end of the inner container 1-2 is provided with an inverted V-shaped waste gas collecting cover 1-2-1, the lower end is provided with a supporting barrel 1-2-2, the upper end of the inner container 1-2 is provided with a centrifugal fan 1-3, the wall surface of the upper end of the supporting barrel 1-2-2 is provided with a concentrated oil fume overflow port 1-4, a gap between the outer cover 1-1 and the inner container 1-2 is provided with a concentrated oil fume backflow channel 1-5, a concentrated oil fume one-way circulation valve 1-6 is arranged in a concentrated oil fume backflow channel 1-5 at the bottom of the outer cover 1-1 and the inner container 1, a thick oil smoke gas outlet 1-7, and a pot supporting ridge 1-8 arranged at the bottom of the inner container 1-2. As shown in fig. 2-a, 2-b.

The cookware is placed on a cookware support ridge 1-8 on the cooking bench to divide the cooking bench into a combustion area and an oil smoke area, oil smoke generated during use of the cookware rises to an oil smoke collecting cover 1, under the action of a centrifugal fan 1-3, the oil smoke with higher density is extruded to the wall surface of an inner container 1-2, concentrated oil smoke flows out from a concentrated oil smoke overflow outlet 1-4, passes through a concentrated oil smoke backflow channel 1-5 and flows into a gas combustion area from a concentrated oil smoke outflow outlet 1-7 through a concentrated oil smoke one-way circulation valve 1-6; when the coal gas or the natural gas is burnt, the fire Yan with the temperature of 600-2000 ℃ can be usually generated, and the oil smoke gas is oxidized to generate carbon dioxide and water under certain conditions; the shape of a centrifugal blade of the centrifugal fan 1-3 is reasonably set, and the rotating speed of the centrifugal fan 1-3 is adjusted, so that the thick oil smoke flowing out of the thick oil smoke flow outlet 1-7 does not influence the combustion of the fuel gas in the combustion area; the invention is provided with the thick oil smoke one-way circulation valve 1-6, so that flame generated by combustion of gas is prevented from flowing backwards into the thick oil smoke backflow channel 1-5, and condensed oil stains in the channel are ignited to cause fire.

Example 2

The energy-saving environment-friendly cooking bench is provided with an oil fume collecting cover 1 and an exhaust gas circulating channel 2, wherein the exhaust gas circulating channel 2 comprises an exhaust gas circulating pipeline 2-1 and an exhaust gas uniform diffuser 2-2; the waste gas circulation pipeline 2-1 is in a C shape and is placed on the back of the oil smoke collecting cover 1, the upper end of the waste gas circulation pipeline 2-1 is communicated with the top end of the waste gas collecting cover 1-2-1, and the lower end is communicated with the waste gas uniform distributor 2-2; the waste gas uniform diffuser 2-2 is arranged at the lowest end of the inner wall of the supporting barrel 1-2-2 of the inner container 1-2 and is tightly attached to the inner wall of the supporting barrel 1-2-2. As shown in fig. 2-a, 2-b.

The cookware is placed on a cookware support ridge 1-8 on the cooking bench to divide the cooking bench into a combustion area and an oil smoke area, oil smoke generated during use of the cookware rises to an oil smoke collecting cover 1, the oil smoke with higher density is extruded on the wall surface of an inner container 1-2 under the action of a centrifugal fan 1-3, and the rest waste gas flows into a waste gas circulating pipeline 2-1 from the top end of the waste gas collecting cover 1-2-1 and flows out of a waste gas uniform diffuser 2-2 around the cookware to flow together with hot oil smoke in the cookware and rise to form circulation.

Example 3

The energy-saving environment-friendly cooking bench is provided with a gas combustion cooking appliance 3, and comprises a gas pipe 3-1, a combustion-supporting gas input pipe 3-2 and a gas burner 3-3; the gas combustion stove 3 is arranged under the oil smoke collecting cover 1, and the outer cover 1-1 and the inner container 1-2 are tightly buckled at the upper port of the gas combustion stove 3; the periphery of the upper end of the gas combustion stove 3 is provided with a burnt gas outlet 4-1, a burnt gas collecting channel 4-2 and a burnt gas collecting pipeline 4-3. As shown in fig. 3-a, 3-b.

The cookware is placed on cookware support ridges 1-8 on the cooking bench to divide the cooking bench into a combustion area and an oil smoke area, and the thick oil smoke flows into the gas combustion area from thick oil smoke outlets 1-7 along paths 1-10; the gas flows into the gas burner 3-3 from the gas pipe 3-1 to burn, flame of 600-2000 ℃ is generated under the pan, and the combustion-supporting gas input pipe 3-2 inputs combustion-supporting oxygen to regulate and control the combustion state of the gas; the thick oil smoke flows into a gas combustion area, is oxidized to generate carbon dioxide and water, and a small amount of high-temperature oxygen-containing organic matters and carbon monoxide which are not completely oxidized flow into a burnt gas outlet 4-1 together and are collected by a burnt gas collecting pipeline 4-3 to enter a burnt gas collecting channel 4-2.

Example 4

The energy-saving and environment-friendly cooking bench is provided with a retreatment system 4, and comprises a burnt gas outlet 4-1, a burnt gas collecting channel 4-2, a burnt gas collecting pipeline 4-3, a burnt gas collecting furnace 4-4 and a heat energy recovery water tank 4-5. The retreatment system 4 is arranged at the back of the oil fume collecting cover 1 and the gas combustion stove 3, the heat energy recovery water tank 4-5 is arranged inside the burnt gas collecting furnace 4-4, the burnt gas outlet 4-1 is arranged at the periphery of the upper end of the gas combustion stove 3, the burnt gas collecting pipeline 4-3 is tightly buckled with the outer wall of the upper end of the gas combustion stove 3, and the upper port of the burnt gas collecting furnace 4-4 is provided with an exhaust device 5. The exhaust device 5 comprises a gas collecting cover 5-1, an exhaust fan 5-2 and an exhaust pipe 5-3. As shown in fig. 4.

The heat energy recovery water tank 4-5 comprises a water tank 4-5-1, a cold water input pipe 4-5-2, a hot water output pipe 4-5-3, a waste oil receiving hopper 4-5-4 and a pointed cone group 4-5-5; the water tank 4-5-1 is a sealed barrel, and the lower end of the water tank is a cone; the waste oil receiving hopper 4-5-4 is arranged right below the cone of the water tank 4-5-1; the pointed cone group 4-5-5 is tightly fixed on the outer surface of the water tank 4-5-1. As shown in fig. 5.

High-temperature combusted gas flowing out of a gas combustion cooker 3 flows in from a combusted gas outlet 4-1, is collected by a combusted gas collecting pipeline 4-3, enters a combusted gas collecting channel 4-2, enters a combusted gas collecting furnace 4-4 through the combusted gas collecting pipeline 4-3, heat energy is transferred to water in a water tank by a pointed cone group 4-5-5 around a heat energy recovery water tank 4-5, hot water in the water tank can be discharged from a hot water output pipe 4-5-3 for reuse, and cold water is put in from a cold water input pipe 4-5-2; the oil smoke gas which is not completely oxidized is condensed into liquid oil stain in the pointed cone group 4-5-5 and is concentrated in the waste oil receiving hopper 4-5-4 to be discharged.

Although the terms oil fume collecting hood, exhaust gas circulation channel, gas combustion range, aftertreatment system, exhaust device, exhaust gas uniform spreader, waste oil receiving hopper, exhaust gas circulation pipe, one-way circulation valve, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is not in accordance with the spirit of the present invention.

Claims

1. An energy-saving and environment-friendly cooking bench comprises an oil fume collecting cover (1), an exhaust gas circulating channel (2), a gas combustion cooker (3), a retreatment system (4) and an exhaust device (5); the oil fume collecting cover (1) is arranged on the gas combustion cooker (3), the retreatment system (4) is arranged at the back of the gas combustion cooker (3), and the exhaust device (5) is arranged at the upper end of the retreatment system (4); the oil fume collecting cover (1) is provided with an outer cover (1-1) and an inner container (1-2), the upper end of the inner container (1-2) is an inverted V-shaped waste gas collecting cover (1-2-1), the lower end of the inner container is a supporting barrel (1-2-2), the upper end of the inner container (1-2) is provided with a centrifugal fan (1-3), the wall surface of the upper end of the supporting barrel (1-2-2) is provided with a thick oil fume overflow outlet (1-4), a gap between the outer cover (1-1) and the inner container (1-2) is provided with a thick oil fume backflow channel (1-5), a thick oil fume one-way circulation valve (1-6) and a thick oil fume outflow port (1-7) are arranged in the thick oil fume backflow channel at the bottoms of the outer cover (1-1) and the inner container (1-2), the inner edge at the bottom of the inner container (1-2) is provided with a supporting, the concentrated oil smoke flows from the concentrated oil smoke overflow outlet (1-4) to the concentrated oil smoke backflow channel (1-5) and flows from the concentrated oil smoke flow outlet (1-7) to the gas combustion area through the concentrated oil smoke one-way flow valve (1-6); the waste gas circulating channel (2) comprises a waste gas circulating pipeline (2-1) and a waste gas uniform spreader (2-2); the waste gas circulation pipeline (2-1) is C-shaped and is placed behind the oil smoke collecting cover (1), the upper end of the waste gas circulation pipeline (2-1) is communicated with the top end of the waste gas collecting cover (1-2-1), and the lower end of the waste gas circulation pipeline is communicated with the waste gas uniform distributor (2-2); the waste gas uniform diffuser (2-2) is arranged at the lowest end of the inner wall of the supporting barrel (1-2-2) of the inner container (1-2) and is tightly attached to the inner wall of the supporting barrel (1-2-2), and waste gas flows through the waste gas circulating pipeline (2-1) from the top end of the waste gas collecting cover (1-2-1) and flows out of the waste gas uniform diffuser (2-2) to the periphery of the cooker; the reprocessing system (4) comprises a burnt gas outlet (4-1), a burnt gas collecting channel (4-2), a burnt gas collecting pipeline (4-3), a burnt gas collecting furnace (4-4) and a heat energy recovery water tank (4-5); the heat energy recovery water tank (4-5) is arranged inside the burnt gas collecting furnace (4-4); the burnt gas outlet (4-1) is arranged around the upper end of the gas combustion stove (3), and the burnt gas collecting pipeline (4-3) is tightly buckled with the outer wall of the upper end of the gas combustion stove (3).

2. An energy saving and environmental friendly cooking top as set forth in claim 1, wherein: the oil fume collecting cover (1) is characterized in that C-shaped openings (1-9) are formed in the outer cover (1-1) and the inner container (1-2) in a tidy manner in a working area facing personnel.

3. An energy saving and environmental friendly cooking top as set forth in claim 1, wherein: the gas combustion cooker (3) comprises a gas pipe (3-1), a combustion-supporting gas input pipe (3-2) and a gas combustor (3-3); the gas combustion stove (3) is arranged under the oil fume collecting cover (1), and the outer cover (1-1) and the inner container (1-2) are tightly buckled on the upper port of the gas combustion stove (3).

4. An energy saving and environmental friendly cooking top as set forth in claim 1, wherein: the heat energy recovery water tank (4-5) comprises a water tank (4-5-1), a cold water input pipe (4-5-2), a hot water output pipe (4-5-3), a waste oil receiving hopper (4-5-4) and a pointed cone group (4-5-5); the water tank (4-5-1) is a sealed barrel, and the lower end of the water tank is a cone; the waste oil receiving hopper (4-5-4) is arranged under the cone of the water tank (4-5-1); the pointed cone group (4-5-5) is tightly fixed on the outer surface of the water tank (4-5-1).

5. An energy saving and environmental friendly cooking top as set forth in claim 1, wherein: the centrifugal fan (1-3) has the comprehensive effect that the thick oil smoke flowing out of the thick oil smoke flow outlet (1-7) does not influence the combustion of the fuel gas in the combustion area.