Large gas cooking stove convenient for waste heat recovery and utilization

Abstract

The utility model relates to the technical field of gas cooking stoves, and discloses a gas cooking stove convenient for waste heat recycling, which comprises a stove body, cookware, a hearth, a grating frame, an air pipe, an air pump, a gas pipe, an ignition needle and a flue, a heat exchange water tank is arranged in the stove body, a heat exchange pipe is arranged in the heat exchange water tank, and one end of the heat exchange pipe is communicated with the flue. A smoke exhaust pipe with one end connected with the heat exchange pipe is arranged outside the heat exchange water tank, a water storage tank is arranged on the upper side of the stove body, a connecting water pipe is arranged between the water storage tank and the heat exchange water tank, a recycling pump and a recycling valve are arranged on the connecting water pipe, and a hot water faucet communicated with the water storage tank is arranged on the upper side of the stove body. The heat exchange water tank is further connected with a water inlet pipe communicated with an urban water network, and a water inlet valve is arranged on the water inlet pipe. After flue gas passes through the heat exchange pipe, the flue gas can exchange heat with water in the heat exchange water tank through the heat exchange pipe due to the fact that the outer wall of the heat exchange pipe is in contact with the water in the heat exchange water tank.

Description

Technical Field

[0001] The utility model belongs to the technical field of large gas stoves, and particularly relates to a large gas stove which is convenient for recycling waste heat. Background Art

[0002] A large pot stove is a type of stove in the kitchen, usually a commercial kitchen equipment, a type of Chinese cooking stove. Large pot stoves can generally be divided into three types: gas large pot stoves, electromagnetic large pot stoves, and steam large pot stoves. As a heating device for cooking, gas stoves have been widely used by people all over the world.

[0003] At present, a Chinese patent with publication number CN107676821A and publication date of February 9, 2018 discloses a commercial stove, including a panel, a furnace, an air inlet pipe, a built-in burner in the furnace, and a duct. The furnace is composed of an inner and outer layer, a cavity is provided between the inner layer and the outer layer of the furnace, a smoke exhaust hole is provided on the inner layer of the furnace, and an infrared reflective net is covered on the inner wall of the inner layer of the furnace; the air inlet pipe is divided into a transverse pipe and a longitudinal pipe, the longitudinal pipe is connected to the transverse pipe, the end of the longitudinal pipe is an air inlet, a fire outlet is provided at one end of the transverse pipe, and a main fire outlet is provided at the other end; a fire ignition valve is connected to the transverse pipe between the fire outlet and the longitudinal pipe, and a main fire air linkage valve is connected to the transverse pipe between the main fire outlet and the longitudinal pipe; the fire outlet, the main fire outlet, and the duct outlet are all connected to the burner; a display screen is provided on the panel, and a Hall sensor switch is fixed on the main fire air linkage valve, and the Hall sensor switch is electrically connected to the display screen on the stove panel.

[0004] The flue gas generated in the furnace of this commercial stove is discharged through the flue. The flue gas generated in the furnace itself has a relatively high temperature. Directly discharging the flue gas into the air cannot fully recycle the heat therein, which is not conducive to energy saving and environmental protection. Utility Model Content

[0005] The utility model aims to provide a large gas stove which is convenient for waste heat recovery and utilization, and can be beneficial for recovering and utilizing the heat in the smoke.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a large gas stove that is convenient for waste heat recovery and utilization, comprising a stove body, a pot located on the stove body, a furnace arranged in the stove body and located below the pot, a grille arranged inside the furnace and supported on the below of the pot, an air pipe arranged in the stove body and having its end inserted into the grille, an air pump arranged in the stove body and connected to one end of the air pipe away from the grille, a gas pipe arranged in the stove body and having its end inserted into the grille, an ignition needle arranged in the grille, and a flue arranged on the below of the furnace, wherein the gas pipe is arranged in the stove body and having its end inserted into the grille, A heat exchange water tank is arranged in the stove body, a heat exchange tube with one end connected to the flue is arranged in the heat exchange water tank, a smoke exhaust pipe with one end connected to the heat exchange tube is arranged outside the heat exchange water tank, a smoke exhaust pump is arranged on the smoke exhaust pipe, a water storage tank is arranged on the upper side of the stove body, a connecting water pipe is arranged between the water storage tank and the heat exchange water tank, a reuse pump and a reuse valve are arranged on the connecting water pipe, a hot water faucet connected to the water storage tank is arranged on the upper side of the stove body, a water inlet pipe connected to the city water network is also connected to the heat exchange water tank, and a water inlet valve is arranged on the water inlet pipe.

[0007] The utility model is further configured as follows: the water inlet valve and the reuse valve are both solenoid valves, a temperature sensor is arranged inside the upper side of the heat exchange water tank, a controller electrically connected to the temperature sensor is arranged on the outer wall of the heat exchange water tank, and the controller is electrically connected to the water inlet valve, the reuse valve and the reuse pump through wires.

[0008] The utility model is further configured as follows: the heat exchange tube extends in an S-shape in the heat exchange water tank.

[0009] The utility model is further configured as follows: an exhaust groove extending in a vertical direction is provided on the upper side wall of the stove body, and a plurality of smoke holes are provided on the inner wall of the exhaust groove, one end of which is connected to the exhaust groove and the other end is connected to the smoke exhaust pipe.

[0010] The utility model is further configured as follows: a filter cotton plate extending in the vertical direction and covering the outside of multiple smoke holes is arranged in the exhaust groove, and slide rails with an L-shaped cross-section are arranged on the outer wall of the stove body and on both sides of the exhaust groove, a mesh cover plate is embedded between the slide rails on both sides, and a positioning plate is arranged on the upper end of the mesh cover plate, which abuts against the upper end surface of the slide rail.

[0011] The utility model is further configured as follows: an oil drop slide extending obliquely downward is provided at the lower end of the exhaust groove, and an oil receiving box is provided on the outer wall of the stove body and below the oil drop slide.

[0012] The utility model is further configured as follows: a groove for embedding the side of the oil receiving box is provided on the outer wall of the stove body and below the oil drop slide, a first magnet plate is provided on the inner wall of the groove, and a second magnet plate for engaging with the first magnet plate is provided on the side of the oil receiving box.

[0013] In summary, the utility model has the following beneficial effects:

[0014] 1. When the high-temperature flue gas is discharged from the flue, the flue gas will first enter the heat exchange tube in the heat exchange water tank. After the flue gas passes through the heat exchange tube, the outer wall of the heat exchange tube contacts the water in the heat exchange water tank, so the flue gas can exchange heat with the water in the heat exchange water tank through the heat exchange tube, thereby increasing the temperature of the water in the heat exchange water tank; then, the recycling pump and the recycling valve are turned on, and the hot water can be transported into the water storage tank through the connecting water pipe, and the operator can take the hot water in the water storage tank by opening the hot water tap; at the same time, when the hot water in the heat exchange water tank is emptied, the water inlet valve can be opened to use the water inlet pipe to add cold water to the heat exchange water tank; finally, the heat in the flue gas can be recycled;

[0015] 2. The temperature sensor can be used to monitor the water temperature in the heat exchange water tank. When the temperature reaches 60 degrees Celsius, the controller can control the recycling valve and the recycling pump to start. After the recycling valve is opened, the recycling pump can send the hot water in the heat exchange water tank to the water storage tank; and when the hot water in the heat exchange water tank is emptied, the controller can open the water inlet valve and use the water inlet pipe to add cold water to the heat exchange water tank;

[0016] 3. The heat exchange tube is extended in an S shape in the heat exchange water tank, which can increase the contact area between the heat exchange tube and the water in the heat exchange water tank, and at the same time prolong the time for the flue gas to be transmitted in the heat exchange tube, which can ultimately facilitate a more sufficient heat exchange between the flue gas and water;

[0017] 4. The smoke discharged from the exhaust pipe can pass through multiple smoke holes and enter the exhaust slot, and then be discharged through the exhaust slot;

[0018] 5. When the smoke enters the exhaust slot, the filter cotton board arranged in the exhaust slot can filter the smoke to avoid the smoke directly discharged from polluting the air environment; at the same time, when the filter cotton board needs to be replaced, it is only necessary to move the grid cover between the two slide rails upwards, and then the exhaust slot can be opened to take out the filter cotton board therein, which is finally conducive to more convenient replacement of the filter cotton board;

[0019] 6. Since the smoke contains oil, the oil filtered by the filter cotton plate will gather at the lower end of the filter cotton plate under its own gravity, and then the oil can drip from the lower end of the filter cotton plate, and the dripping oil can slide down along the oil drop slide and fall into the oil receiving box;

[0020] 7. The side of the oil receiving box is embedded in the groove, and the first magnet plate and the second magnet plate are used for attraction. At this time, the oil receiving box can stably collect the oil falling from the oil drop slide; at the same time, when the oil receiving box is fully loaded, the first magnet plate and the second magnet plate can be disassembled and assembled more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a structural sectional view of the utility model;

[0024] Figure 3 It is a partial structural sectional view of the stove body at the exhaust groove position in the utility model.

[0025] In the figure, 1, stove body; 11, pot; 12, furnace; 121, grille; 122, ignition needle; 123, flue; 13, air pipe; 14, air pump; 15, gas pipe; 16, hot water tap; 17, exhaust groove; 171, smoke hole; 172, oil drop slide; 18, slide rail; 19, groove; 191, first magnet plate; 2, heat exchange water tank; 21, heat exchange pipe; 22, smoke exhaust pipe; 221, smoke exhaust pump; 3, water storage tank; 31, connecting water pipe; 311, recycling pump; 312, recycling valve; 32, water inlet pipe; 321, water inlet valve; 33, temperature sensor; 34, controller; 4, filter cotton board; 5, grid cover; 51, positioning plate; 6, oil receiving box; 61, second magnet plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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] A large gas stove that is convenient for waste heat recovery and utilization, refer to Figure 1 , Figure 2The large gas stove for waste heat recovery comprises a stove body 1, a pot 11, a furnace 12, a grille 121, an air pipe 13, an air pump 14, a gas pipe 15, an ignition needle 122, and a flue 123, wherein the pot 11 is located on the stove body 1, and the furnace 12 is arranged in the stove body 1 and located at the lower side of the pot 11, and the grille 121 is fixed to the inner side of the furnace 12 by bolts and supported on the lower side of the pot 11, and the air pipe 13 is connected to the stove body 1 by a hoop and the end thereof is inserted into the stove body 1. Inside the grille 121, the air pump 14 is fixed to the stove body 1 by bolts and is connected to the end of the air pipe 13 away from the grille 121, and the outside air is injected into the furnace 12 through the air pump 14 and the air pipe 13; at the same time, the gas pipe 15 is connected to the stove body 1 through a clamp and the end enters the grille 121, and the ignition needle 122 is installed in the grille 121, wherein the flue 123 is installed on the lower side of the furnace 12, and the flue 123 is used to discharge the smoke generated in the furnace 12.

[0028] Reference Figure 1 , Figure 2 , Figure 3 A heat exchange water tank 2 is fixed in the stove body 1 by bolts, and a heat exchange tube 21 having one end connected to the flue 123 is fixed in the heat exchange water tank 2 by bolts, and the heat exchange tube 21 extends in an S shape in the heat exchange water tank 2, wherein a smoke exhaust pipe 22 having one end connected to the heat exchange tube 21 is fixed outside the heat exchange water tank 2 by bolts, and a smoke exhaust pump 221 is installed on the smoke exhaust pipe 22, and the smoke exhaust pump 221 facilitates the smooth movement of smoke in the heat exchange tube 21; at the same time, an exhaust groove 17 extending in the vertical direction is provided on the upper side wall of the stove body 1, and a plurality of smoke holes 171 are provided on the inner wall of the exhaust groove 17, one end of which is connected to the exhaust groove 17 and the other end of which is connected to the smoke exhaust pipe 22, and the plurality of smoke holes 171 are evenly spaced along the vertical direction; wherein a vertically extending and covering plurality of smoke holes 171 is also placed in the exhaust groove 17 A filter cotton plate 4 is arranged outside a smoke hole 171, and slide rails 18 with an L-shaped cross-section are welded on the outer wall of the stove body 1 and located on both sides of the exhaust groove 17, and a mesh cover plate 5 is embedded between the slide rails 18 on both sides, and a positioning plate 51 that abuts against the upper end surface of the slide rail 18 is integrally arranged on the upper end of the mesh cover plate 5; wherein an oil drop slide 172 extending downward along an inclination is provided at the lower end of the exhaust groove 17, and an oil receiving box 6 is also provided on the outer wall of the stove body 1 and located below the oil drop slide 172, and a groove 19 for the side edge of the oil receiving box 6 to be embedded is provided on the outer wall of the stove body 1 and located below the oil drop slide 172, and a first magnet plate 191 is fixed to the inner wall of the groove 19 by bolts, wherein a second magnet plate 61 for attracting the first magnet plate 191 is fixed to the side edge of the oil receiving box 6 by bolts.

[0029] Reference Figure 1 , Figure 2A water storage tank 3 is also fixed to the upper side of the stove body 1 by bolts, and a connecting water pipe 31 is installed between the water storage tank 3 and the heat exchange water tank 2, the upper end of the connecting water pipe 31 is connected to the water storage tank 3 and the lower end is connected to the heat exchange water tank 2, wherein a recycling pump 311 and a recycling valve 312 are also installed on the connecting water pipe 31, and a hot water faucet 16 connected to the water storage tank 3 is also installed on the upper side of the stove body 1, and a water inlet pipe 32 connected to the city water network is also connected to the heat exchange water tank 2 by bolts, and a water inlet valve 321 is installed on the water inlet pipe 32, wherein the water inlet valve 321 and the recycling valve 312 are both solenoid valves, and a temperature sensor 33 is installed on the upper side of the heat exchange water tank 2, and a controller 34 electrically connected to the temperature sensor 33 is installed on the outer wall of the heat exchange water tank 2 by bolts, wherein the controller 34 is electrically connected to the water inlet valve 321, the recycling valve 312 and the recycling pump 311 through wires.

[0030] Principle: When the high-temperature flue gas is discharged from the flue 123, the flue gas will first enter the heat exchange tube 21 in the heat exchange water tank 2. After the flue gas passes through the heat exchange tube 21, since the outer wall of the heat exchange tube 21 contacts the water in the heat exchange water tank 2, the flue gas can exchange heat with the water in the heat exchange water tank 2 through the heat exchange tube 21, thereby increasing the temperature of the water in the heat exchange water tank 2. The temperature sensor 33 can be used to monitor the water temperature in the heat exchange water tank 2. When the temperature reaches 60 degrees Celsius, the controller 34 can control the reuse valve 312 and the reuse pump 311 to start. After the reuse valve 312 is opened, the reuse pump 311 can send the hot water in the heat exchange water tank 2 into the water storage tank 3. When the hot water in the heat exchange water tank 2 is emptied, the controller 34 can open the water inlet valve 321 to use the water inlet pipe 32 to replenish cold water in the heat exchange water tank 2. Finally, the heat in the flue gas can be recycled.

[0031] When the smoke enters the exhaust groove 17, the filter cotton board 4 arranged in the exhaust groove 17 can filter the smoke to prevent the directly discharged smoke from polluting the air environment; at the same time, when the filter cotton board 4 needs to be replaced, it is only necessary to move the mesh cover plate 5 between the two slide rails 18 upwards, and then the exhaust groove 17 can be opened to take out the filter cotton board 4 therein, which can finally facilitate the more convenient replacement of the filter cotton board 4; the oil filtered by the filter cotton board 4 will be collected to the lower end of the filter cotton board 4 under the action of its own gravity, and then the oil can drip from the lower end of the filter cotton board 4, and the dripping oil can slide down along the oil drop slide 172 and fall into the oil receiving box 6.

Claims

1. A large gas stove for facilitating waste heat recovery, comprising a stove body (1), a pot (11) located on the stove body (1), a furnace (12) arranged in the stove body (1) and located below the pot (11), a grille (121) arranged inside the furnace (12) and supported below the pot (11), an air pipe (13) arranged in the stove body (1) and having its end inserted into the grille (121), an air pump (14) arranged in the stove body (1) and connected to an end of the air pipe (13) away from the grille (121), a gas pipe (15) arranged in the stove body (1) and having its end inserted into the grille (121), an ignition needle (122) arranged in the grille (121), and a flue (123) arranged below the furnace (12), characterized in that: A heat exchange water tank (2) is arranged inside the stove body (1), a heat exchange pipe (21) having one end connected to the flue (123) is arranged inside the heat exchange water tank (2), a smoke exhaust pipe (22) having one end connected to the heat exchange pipe (21) is arranged outside the heat exchange water tank (2), and a smoke exhaust pump (221) is arranged on the smoke exhaust pipe (22), a water storage tank (3) is arranged on the upper side of the stove body (1), a connecting water pipe (31) is arranged between the water storage tank (3) and the heat exchange water tank (2), a recycling pump (311) and a recycling valve (312) are arranged on the connecting water pipe (31), a hot water tap (16) connected to the water storage tank (3) is arranged on the upper side of the stove body (1), and a water inlet pipe (32) connected to the city water network is also connected to the heat exchange water tank (2), and a water inlet valve (321) is arranged on the water inlet pipe (32).

2. A large gas stove for waste heat recovery according to claim 1, characterized in that: The water inlet valve (321) and the recycling valve (312) are both solenoid valves. A temperature sensor (33) is provided inside the upper side of the heat exchange water tank (2). A controller (34) electrically connected to the temperature sensor (33) is provided on the outer wall of the heat exchange water tank (2). The controller (34) is electrically connected to the water inlet valve (321), the recycling valve (312) and the recycling pump (311) via wires.

3. A large gas stove for waste heat recovery according to claim 1, characterized in that: The heat exchange tube (21) extends in an S shape inside the heat exchange water tank (2).

4. A large gas stove for waste heat recovery according to claim 1, characterized in that: An exhaust groove (17) extending in a vertical direction is provided on the upper side wall of the stove body (1), and a plurality of smoke holes (171) are provided on the inner wall of the exhaust groove (17), one end of which is connected to the exhaust groove (17) and the other end of which is connected to the smoke exhaust pipe (22).

5. A large gas stove for waste heat recovery according to claim 4, characterized in that: A filter cotton plate (4) extending in the vertical direction and covering the outside of the plurality of smoke holes (171) is arranged in the exhaust groove (17); slide rails (18) with an L-shaped cross section are arranged on the outer wall of the stove body (1) and located on both sides of the exhaust groove (17); a mesh cover plate (5) is embedded between the slide rails (18) on both sides; and a positioning plate (51) is arranged at the upper end of the mesh cover plate (5) to abut against the upper end surface of the slide rail (18).

6. A large gas stove for waste heat recovery according to claim 5, characterized in that: An oil drop slide (172) extending obliquely downward is provided at the lower end of the exhaust groove (17), and an oil receiving box (6) is provided on the outer wall of the stove body (1) and below the oil drop slide (172).

7. A large gas stove for waste heat recovery according to claim 6, characterized in that: A groove (19) for embedding the side edge of the oil receiving box (6) is provided on the outer wall of the stove body (1) and below the oil drop slide (172); a first magnet plate (191) is provided on the inner wall of the groove (19); and a second magnet plate (61) for attracting the first magnet plate (191) is provided on the side edge of the oil receiving box (6).

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