Fuel gas short soup stove capable of efficiently utilizing flue gas emission heat energy in whole process

Abstract

The short fuel gas soup stove comprises a stove, a hearth, a burner, a water tank and a smoke hood, the hearth is of a double-layer hollow structure composed of a hearth inner shell and a hearth outer shell, a smoke cavity is formed in the double-layer hollow structure of the hearth, and a plurality of steps which are gradually reduced from top to bottom are arranged on the outer surface of the hearth inner shell; a plurality of air holes are formed in the vertical wall of each step, the smoke cavity is outwards communicated with a smoke exhaust pipe, a pressure self-adaptive valve mechanism is arranged in the smoke exhaust pipe, the smoke exhaust pipe is connected with a smoke exhaust chimney, the smoke exhaust chimney penetrates through the water tank from bottom to top, and the smoke hood is of a double-layer hollow structure formed by a hood inner shell and a hood outer shell. And a water storage cavity is formed in the double-layer hollow structure of the smoke hood. Considering that the soup cooking time of a short soup stove is long and a large amount of smoke heat energy and high-temperature steam are emitted during the period, the corresponding structure is improved to efficiently and fully utilize smoke in the whole exhaust process, and the purposes of environmental protection, energy conservation and energy conservation are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen equipment, and more particularly to a gas-fired short soup cooker which can efficiently utilize the heat energy of smoke emission in the whole process. Background Art

[0002] The short soup stove is mainly used as a kitchen utensil for making soup in canteens of hotels, restaurants, colleges and universities, government agencies, industrial and mining enterprises, etc.

[0003] For example, ZL202322368887.7 discloses an energy-saving gas-fired short soup stove, which includes a base, an operating table fixedly connected to the base, a pot rack fixedly installed on the operating table, and a soup bucket placed on the pot rack.

[0004] Another example is a highly safe gas-fired single-head short soup stove disclosed in ZL202320265864.0, which includes a short soup stove, a pot rack is provided on the top surface of the short soup stove, a liftable bracket and a baffle are slidably connected to the pot rack, the bracket and the baffle are linked, and an oil pan is slidably connected to the bottom of the short soup stove.

[0005] The above two patents and even those short soup stoves disclosed on the patent website are all technically tackled from the safety aspect of the short soup stove. They all overlooked that the short soup stove is used for boiling soup for several hours, and a large amount of smoke and heat are wasted. Summary of the invention

[0006] The purpose of the present invention is to overcome the above defects of the prior art and to provide an environmentally friendly, energy-saving and energy-saving gas-fired short soup boiler that can efficiently utilize the heat energy of flue gas emissions throughout the entire process. The efficient and full utilization of the entire process is intended to: the front flue gas circulates in the furnace to assist in heating, and the rear flue gas flows through the flue hood and is discharged during the waste heat recovery.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions: a gas short soup stove with efficient utilization of flue gas emission heat energy throughout the whole process, comprising a stove, a furnace is provided on the stove, a burner is provided in the furnace, a water tank is provided next to the furnace, and a smoke hood is provided above the stove, characterized in that the furnace is composed of a chamber inner shell and a chamber outer shell to form a double-layer hollow structure, a smoke cavity is formed in the double-layer hollow structure of the furnace, the outer surface of the chamber inner shell is provided with a plurality of steps which gradually shrink from top to bottom, and a plurality of air holes are provided on the vertical wall of each step, the smoke cavity is connected to a smoke exhaust pipe to the outside, a valve mechanism is provided in the smoke exhaust pipe, the smoke exhaust pipe is connected to a row of chimneys, the smoke exhaust chimneys pass through the water tank from bottom to top, the smoke hood is composed of a hood inner shell and a hood outer shell to form a double-layer hollow structure, and a water storage cavity is formed in the double-layer hollow structure of the smoke hood.

[0008] The present invention takes into account that a short soup stove takes a long time to cook soup, during which a large amount of flue gas heat energy is emitted, and thus improves the corresponding structure to efficiently and fully utilize the flue gas in the entire process of emission, thereby achieving the purpose of environmental protection and energy saving.

[0009] The full process of efficient and full utilization aims at: 1. The front flue gas circulates in the furnace to assist heating, and the combustion chamber of the furnace is designed as a stepped structure. The soup bucket is selected according to its own size and the corresponding step is inserted and placed stably. After combustion in the combustion chamber covered by the lower part of the soup bucket, the flue gas enters the hollow flue cavity of the furnace. The valve mechanism opens and closes adaptively according to the size of the airflow. Part of the airflow is pushed back and comes out from the air holes on the side wall of the step that is not against the soup bucket above. This part of the high-temperature flue gas impacts and heats the side wall of the soup bucket, and finally rises to the hood; 2. The rear flue gas flows through the flue hood and the waste heat is returned during the discharge The heat of the flue gas heats the chimney, and because the chimney runs through the water tank, the water in the water tank is heated. The flue gas coming out of the chimney, the flue gas directly coming up from the furnace, and the steam generated by making soup enter the hood, thereby heating the hood. The hood is designed with a double-layer structure to store water, and then heats the water in the water storage cavity. After the water in the hood or the water tank is heated, it can be directly added to the soup bucket and the hot water supply in the entire kitchen, thereby effectively reducing energy consumption and achieving the purpose of environmental protection and energy saving.

[0010] Preferably, the smoke hood and the water tank are connected via a connecting water tank, the smoke hood, the connecting water tank and the inner cavity of the water tank are communicated, the smoke hood is provided with a water inlet joint, and the water tank is provided with a drain faucet.

[0011] The smoke hood, the connecting water tank and the inner cavity of the water tank are connected to increase the water storage capacity and allow the water inside them to conduct heat to each other, thereby causing the overall water temperature to rise together.

[0012] Preferably, the valve mechanism comprises a valve plate, the shape of which matches the cross-section of the smoke exhaust pipe, the upper half of the valve plate is provided with a horizontally arranged shaft sleeve, a rotating shaft is sleeved inside the shaft sleeve, and both ends of the rotating shaft are connected to the pipe wall of the smoke exhaust pipe.

[0013] The opening and closing of the valve is caused by its own weight. It only allows the rotating shaft to hang the valve plate. If the smoke flow is large, it can be opened. If the smoke flow is small, it cannot be opened, allowing the smoke to adaptively adjust its outlet.

[0014] Preferably, the smoke hood is in a convex shape with a small top and a large bottom, the convex lower half of the smoke hood is a smoke collecting chamber, the lower side of the smoke collecting chamber is a smoke inlet, the convex upper half of the smoke hood is a smoke exhaust duct, and the upper side of the smoke exhaust duct is a smoke exhaust port.

[0015] The smoke hood is designed to be small at the top and large at the bottom. On the one hand, it is convenient to absorb more high-temperature flue gas and steam. On the other hand, the discharge process of high-temperature flue gas and steam will be slow due to the contraction of the route, and this time can be fully utilized to absorb the waste heat.

[0016] Preferably, a smoke barrier core of a closed box structure is provided at the lower end of the smoke exhaust duct at the critical point of entering the smoke collection chamber. The smoke barrier core is in an inverted convex shape with a larger upper portion and a smaller lower portion. The lower half of the inverted convex shape of the smoke barrier core is a smoke inlet chamber, and a plurality of smoke inlet holes are provided on the vertical side wall of the smoke inlet chamber. The upper half of the inverted convex shape of the smoke barrier core is a smoke exhaust chamber, and a plurality of smoke exhaust holes are provided on the horizontal top wall of the smoke exhaust chamber.

[0017] The smoke barrier core is mainly used to reduce the emission velocity of smoke and steam, so that the waste heat can be fully absorbed during this time.

[0018] Preferably, a plurality of heat absorbing tubes are suspended in the smoke collecting chamber, and the inner cavities of the heat absorbing tubes are communicated with the water storage chamber of the smoke hood.

[0019] The purpose of the heat absorption pipe is to absorb more waste heat from flue gas and steam.

[0020] Preferably, the heat absorbing tubes are arranged in two rows, and the whole is in a herringbone shape when viewed from the horizontal side.

[0021] Beneficial effects: Taking into account that a short soup stove takes a long time to cook soup, during which a large amount of flue gas heat energy and high-temperature steam are emitted, the present invention improves the corresponding structure to efficiently and fully utilize the flue gas in the entire process of emission, thereby achieving the purpose of environmental protection and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 The main view; Figure 3 for Figure 2 AA structural cross-sectional view; Figure 4 It is a structural schematic diagram of the furnace and the exhaust chimney of the present invention; Figure 5 It is a schematic diagram of the structure of the water tank and the smoke hood of the present invention; Figure 6 It is a schematic diagram of the structure of the smoke barrier core of the present invention; Figure 7 It is a structural schematic diagram of the valve mechanism of the present invention.

[0023] In the figure: 1-stove, 2-furnace, 3-burner, 4-water tank, 5-smoke hood, 6-smoke exhaust pipe, 7-smoke exhaust chimney, 8-valve mechanism, 9-connecting water tank, 10-water inlet joint, 11-drain faucet, 12-smoke barrier core, 13-heat absorbing tube, 21-chamber inner shell, 22-chamber outer shell, 23-smoke cavity, 24-step, 25-air vent, 51-hood inner shell, 52-hood outer shell, 53-water storage cavity, 54-smoke collecting chamber, 55-smoke exhaust duct, 81-valve plate, 82-shaft sleeve, 83-rotating shaft, 121-smoke inlet chamber, 122-smoke inlet hole, 123-smoke exhaust chamber, 124-smoke exhaust hole. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features and objectives of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0025] Example: Figure 1 , Figure 2 and Figure 3 As shown, a gas-fired short soup stove with efficient utilization of flue gas exhaust heat energy throughout the whole process comprises a stove 1, a furnace 2 is arranged on the stove 1, a burner 3 is arranged in the furnace 2, a water tank 4 is arranged beside the furnace 2, and a smoke hood 5 is arranged above the stove 1.

[0026] like Figure 4 As shown, the furnace 2 is composed of a double-layer hollow structure consisting of an inner shell 21 and an outer shell 22. A smoke cavity 23 is formed in the double-layer hollow structure of the furnace 2. The outer surface of the inner shell 21 is provided with four steps 24 which gradually decrease from top to bottom. A plurality of air holes 25 are provided on the vertical wall of each step 24.

[0027] The smoke cavity 23 is connected to a smoke exhaust pipe 6 outwardly, and the smoke exhaust pipe 6 is connected to a chimney 7. The smoke exhaust chimney 7 runs through the water tank 4 from bottom to top.

[0028] like Figure 5 As shown, the smoke hood 5 is composed of a double-layer hollow structure consisting of a hood inner shell 51 and a hood outer shell 52, and a water storage chamber 53 is formed in the double-layer hollow structure of the smoke hood 5. The smoke hood 5 is in a convex shape with a small top and a large bottom. The lower half of the convex shape of the smoke hood 5 is a smoke collecting chamber 54, and the lower side of the smoke collecting chamber 54 is a smoke inlet. The upper half of the convex shape of the smoke hood 5 is a smoke exhaust duct 55, and the upper side of the smoke exhaust duct 55 is a smoke exhaust outlet.

[0029] like Figure 6As shown, a smoke barrier core 12 of a closed box structure is provided at the lower end of the smoke exhaust duct 55 at the critical point of entering the smoke collecting chamber 54. The smoke barrier core 12 is in an inverted convex shape with a larger upper portion and a smaller lower portion. The lower half of the inverted convex shape of the smoke barrier core 12 is a smoke inlet chamber 121, and a plurality of smoke inlet holes 122 are provided on the vertical side wall of the smoke inlet chamber 121. The upper half of the inverted convex shape of the smoke barrier core 12 is a smoke exhaust chamber 123, and a plurality of smoke exhaust holes 124 are provided on the horizontal top wall of the smoke exhaust chamber 123.

[0030] A plurality of heat absorbing tubes 13 are suspended in the smoke collecting chamber 54, and the inner cavity of the heat absorbing tube 13 is connected with the water storage cavity of the smoke cover 5. The heat absorbing tubes 13 are arranged in two rows, and the whole is in a herringbone shape when viewed from the horizontal side.

[0031] The hood 5 and the water tank 4 are connected via a connecting water tank 9. The hood 5, the connecting water tank 9 and the inner cavity of the water tank 4 are connected. The hood 5 is provided with a water inlet joint 10, and the water tank 4 is provided with a drain tap 11. A drain pipe is also provided at the lower part of the water tank 4 for regular and complete water replacement or cleaning of the interior.

[0032] like Figure 7 As shown, a valve mechanism 8 is provided in the smoke exhaust pipe 6, and the valve mechanism 8 includes a valve plate 81. The shape of the valve plate 81 is consistent with the cross-section of the smoke exhaust pipe 6. The upper half of the valve plate 81 is provided with a horizontally arranged shaft sleeve 82, and a rotating shaft 83 is sleeved in the shaft sleeve 82. The two ends of the rotating shaft 83 are connected to the pipe wall of the smoke exhaust pipe 6.

[0033] Use: The front flue gas circulates in the furnace to assist heating. The soup bucket is placed stably after selecting the corresponding step according to its size. The combustion chamber covered by the lower part of the soup bucket is burned, and the flue gas enters the hollow flue gas cavity of the furnace. The valve mechanism opens and closes adaptively according to the size of the airflow. Part of the airflow is pushed back and comes out from the air vents on the side wall of the step that does not lean against the soup bucket. This part of the high-temperature flue gas impacts and heats the side wall of the soup bucket. The rear flue gas flows through the flue hood and recovers waste heat during the discharge. First, the airflow pressure is large and then the valve mechanism is pushed open to enter the exhaust chimney. The heat of the flue gas heats the exhaust chimney. Because the exhaust chimney runs through the water tank, the water in the water tank is heated. The flue gas from the exhaust chimney and the flue gas directly from the furnace and the water vapor enter the hood, thereby heating the hood and then heating the water in the water storage cavity. Finally, the hot water is supplied to the soup bucket or the hot water supply in the kitchen.

Claims

1. A gas-fired short soup stove with efficient utilization of flue gas exhaust heat energy, comprising a stove, a furnace is provided on the stove, a burner is provided in the furnace, a water tank is provided beside the furnace, and a smoke hood is provided above the stove, characterized in that: The furnace chamber is composed of a double-layer hollow structure consisting of a chamber inner shell and a chamber outer shell, a smoke cavity is formed in the double-layer hollow structure of the furnace chamber, the outer surface of the chamber inner shell is provided with a plurality of steps which gradually decrease from top to bottom, a plurality of air holes are provided on the vertical wall of each step, the smoke cavity is connected to a smoke exhaust pipe to the outside, a valve mechanism is provided in the smoke exhaust pipe, the smoke exhaust pipe is connected to a row of chimneys, the smoke exhaust chimneys pass through the water tank from bottom to top, the smoke hood is composed of a hood inner shell and a hood outer shell to form a double-layer hollow structure, a water storage cavity is formed in the double-layer hollow structure of the smoke hood.

2. A gas-fired short soup boiler with efficient utilization of flue gas heat energy throughout the entire process according to claim 1, characterized in that: The smoke hood and the water tank are connected via a connecting water tank, the smoke hood, the connecting water tank and the inner cavity of the water tank are communicated, a water inlet joint is arranged on the smoke hood, and a water drain faucet is arranged on the water tank.

3. A gas-fired short soup boiler with efficient utilization of flue gas exhaust heat energy throughout the entire process according to claim 1, characterized in that: The valve mechanism comprises a valve plate, the shape of which matches the cross section of the smoke exhaust pipe. The upper part of the valve plate is provided with a horizontally arranged shaft sleeve, a rotating shaft is sleeved in the shaft sleeve, and both ends of the rotating shaft are connected to the pipe wall of the smoke exhaust pipe.

4. A gas-fired short boiler with efficient utilization of flue gas heat energy throughout the entire process according to claim 1, characterized in that: The smoke hood is in a convex shape with a small top and a large bottom. The convex lower half of the smoke hood is a smoke collecting chamber, the lower side of the smoke collecting chamber is a smoke inlet, the convex upper half of the smoke hood is a smoke exhaust duct, and the upper side of the smoke exhaust duct is a smoke exhaust port.

5. A gas-fired short soup boiler with efficient utilization of flue gas exhaust heat energy throughout the entire process according to claim 4, characterized in that: The lower end of the smoke exhaust duct is provided with a smoke barrier core of a closed box structure at the critical point of entering the smoke collection chamber. The smoke barrier core is in an inverted convex shape with a larger upper part and a smaller lower part. The lower half of the inverted convex shape of the smoke barrier core is the smoke inlet chamber, and a plurality of smoke inlet holes are provided on the vertical side wall of the smoke inlet chamber. The upper half of the inverted convex shape of the smoke barrier core is the smoke exhaust chamber, and a plurality of smoke exhaust holes are provided on the horizontal top wall of the smoke exhaust chamber.

6. A gas-fired short soup boiler with efficient utilization of flue gas exhaust heat energy throughout the entire process according to claim 4 or 5, characterized in that: A plurality of heat absorbing tubes are suspended in the smoke collecting chamber, and the inner cavities of the heat absorbing tubes are communicated with the water storage chamber of the smoke hood.

7. A gas-fired short boiler with efficient utilization of flue gas heat energy throughout the entire process according to claim 6, characterized in that: The heat absorbing tubes are arranged in two rows, and are in a herringbone shape as a whole when viewed from the horizontal side.

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