Direct-discharge type gas energy-saving waste heat recovery steam large cooking range

Abstract

The utility model discloses a direct-discharge type fuel gas energy-saving waste heat recovery steam large cooking range, which belongs to the field of cooking ranges and comprises a furnace pipe, a furnace end connected with a controller is arranged in the furnace pipe, a frying pan is mounted above the furnace pipe and positioned right above the furnace end, the furnace pipe comprises a furnace pipe shell and a furnace pipe inner wall, a flue gas downward hole is formed in the furnace pipe inner wall, and a flue gas downward hole is formed in the furnace pipe inner wall. A water chamber is formed between the inner wall of the boiler furnace and the boiler furnace shell, a waste heat recovery device is arranged in the water chamber and comprises a hollow body, a smoke inlet pipe communicated with the interior of the body and the smoke downstream hole is arranged on the body, a smoke outlet pipe communicated with the interior of the body is arranged on the side face of the body, and the body and the smoke outlet pipe are provided with a plurality of water flow circulating pipes. High-temperature flue gas flowing through the body is cooled through the water flow circulating pipe, water is evaporated to generate steam to provide a heat source for other devices, tail gas waste heat is utilized, and the purpose of saving energy is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of stove technology, specifically a direct-vent gas-fired energy-saving waste heat recovery steam stove. Background Technology

[0002] During stove use, the smoke produced by combustion will be discharged through the gap between the pot and the stove. The smoke carries away some heat, resulting in reduced cooking efficiency and requiring more time to achieve the desired cooking effect. This causes heat loss and waste, increases energy consumption, and also raises the ambient temperature, especially in summer, making the cook feel uncomfortable. The smoke also contains harmful substances, which can also threaten the health of the cook.

[0003] Therefore, modern stoves prioritize energy efficiency, incorporating cookware that fits snugly against the stove to create a relatively enclosed space between the cookware and the combustion chamber. This reduces the likelihood of smoke escaping through gaps, thus improving cooking efficiency. Based on the characteristics of the smoke itself, a bottom-exhaust system is chosen, which involves creating exhaust vents on the inner wall of the combustion chamber and discharging the smoke through a flue. While this reduces the impact of smoke on the surrounding environment, it doesn't solve the problem of wasted heat from the smoke.

[0004] Although energy-saving stoves have emerged, which incorporate a water tank jacket in the furnace to utilize waste heat, these primarily cool and insulate the furnace walls in the combustion zone rather than utilizing the waste heat from the flue gas. This results in excessively high flue gas emission temperatures, sometimes exceeding 180°C, which affects the lifespan of subsequent equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a direct-vent gas-fired energy-saving waste heat recovery steam stove to solve the problems mentioned in the background art.

[0006] This utility model provides a direct-vent gas-fired energy-saving waste heat recovery steam stove, including a furnace, a burner head connected to a controller inside the furnace, and a wok installed above the furnace, with the wok located directly above the burner head;

[0007] The furnace chamber includes a furnace chamber shell and a furnace chamber inner wall. The furnace chamber inner wall is provided with a flue gas downward hole. A water chamber is formed between the furnace chamber inner wall and the furnace chamber shell. A waste heat recovery device is provided in the water chamber.

[0008] The waste heat recovery device includes a hollow body, an inlet pipe that connects the interior of the body to the flue gas downward hole, an outlet pipe that connects to the interior of the body on the side of the body, and several water circulation pipes on the body and the outlet pipe.

[0009] A further solution: The main body is provided with two smoke inlet pipes, which are located on the side opposite to the smoke outlet pipe.

[0010] A further solution: the wok is sealed to the furnace liner.

[0011] A further solution includes a stove body, with the furnace and controller located inside the stove body. The controller is located outside the furnace and communicates with a control terminal. The controller is equipped with a start switch, an ignition switch, and a flame adjustment switch. The start switch, ignition switch, and flame adjustment switch pass through the stove body and are located on the front of the stove body.

[0012] A further solution: A viewing tube is installed on the front of the stove body, and the other end of the viewing tube passes through the outer shell of the furnace and the inner wall of the furnace, communicating with the inside of the furnace.

[0013] A further solution: A water level gauge is installed on the front of the stove body, and the water level gauge extends through the outer shell of the furnace and into the water chamber.

[0014] A further solution: The bottom of the stove body is equipped with support legs.

[0015] A further solution: The water chamber is equipped with an inlet pipe and an outlet pipe located on opposite sides. An inlet valve is installed on the inlet pipe, and a faucet is installed on the outlet pipe extending out of the stove body. The faucet is located above the wok.

[0016] A further option: The top of the water chamber is provided with a steam collection pipe that connects to the interior of the water chamber.

[0017] A further solution: The bottom of the burner head is equipped with an air inlet pipe, the air inlet pipe is equipped with an air inlet valve, and the top of the burner head is equipped with an igniter. The air inlet valve, the igniter and the controller are associated.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: a waste heat recovery device is set in the water chamber, and high-temperature flue gas enters the body through the flue gas downhole and the flue gas inlet pipe. Several water circulation pipes are set in the body and the flue gas outlet pipe. The two ends of the water circulation pipes are connected to the water chamber. Water enters the water circulation pipes, and the water circulation pipes play a role in obstructing the flow of flue gas. The flue gas in the body and the cooling water in the water circulation pipes fully exchange heat, utilize the waste heat of the flue gas, and cause the water in the water chamber to generate steam, which is then transported to other equipment through the steam collection pipe. It can also provide hot water for users. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a half-sectional structural diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a front view of an embodiment of the present utility model;

[0022] Figure 3 This is a side view of an embodiment of the present utility model;

[0023] Figure 4 This is a top view of an embodiment of the present utility model;

[0024] Figure 5 This is a top view of the internal structure of the furnace in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the waste heat recovery device according to an embodiment of the present invention.

[0026] In the diagram: 1-Wok; 2-Outer shell of the stove; 3-Inner wall of the stove; 31-Downward flue gas vent; 4-Waste heat recovery device; 41-Main body; 42-Inlet pipe; 43-Water circulation pipe; 44-Outlet pipe; 45-Exhaust pipe; 5-Stove head; 51-Air inlet pipe; 6-Water chamber; 61-Water inlet pipe; 611-Water inlet valve; 62-Water level gauge; 63-Outlet pipe; 631-Water tap; 64-Steam collection pipe; 7-Observation tube; 8-Stove body; 81-Support leg; 9-Controller; 91-Start switch; 92-Ignition switch; 93-Flame adjustment switch. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-6As shown, this embodiment provides a direct-vent gas-fired energy-saving waste heat recovery steam stove, including a stove body 8, a furnace liner disposed within the stove body 8, and a controller 9. The stove body 8 has support legs 81 at its bottom. A burner head 5 connected to the controller 9 is disposed inside the furnace liner. A wok 1 is installed above the furnace liner, and the wok 1 is sealed to the furnace liner, positioned directly above the burner head 5. The furnace liner includes a furnace liner outer shell 2 and a furnace liner inner wall 3. The furnace liner inner wall 3 has a flue gas downward flow hole 31. A water chamber 6 is formed between the furnace liner inner wall 3 and the furnace liner outer shell 2. A steam collection pipe 64 communicating with the interior of the water chamber 6 is provided at the top of the water chamber 6. A waste heat recovery device 4 is disposed within the water chamber 6. The waste heat recovery device 4 includes a hollow body 41. The body 41 is provided with a smoke inlet pipe 42 that connects the interior of the body 41 to the flue gas downflow hole 31. The side of the body 41 is provided with a smoke outlet pipe 44 that connects to the interior of the body 41. The body 41 and the smoke outlet pipe 44 are provided with several water circulation pipes 43. The smoke outlet pipe 44 is connected to the exhaust pipe 45. The cooled flue gas exhaust gas is discharged from the stove body 8 through the exhaust pipe 45 for further treatment.

[0030] The burner head 5 has an air inlet pipe 51 at its bottom, with an air inlet valve on the pipe. An igniter is located at the top of the burner head 5. The air inlet valve and igniter are connected to the controller 9. The controller 9 is located outside the burner and communicates with a control terminal. The controller 9 allows for control of the burner's start-up, ignition, and flame size adjustment. The controller 9 has a start switch 91, an ignition switch 92, and a flame adjustment switch 93. These switches pass through the burner body 8 and are located on the front of the burner body 8 for easy operation.

[0031] When cooking, the machine can be turned on using the start switch 91, ignited using the ignition switch 92, and the intake valve controlled by the flame adjustment switch 93 to control the intake air volume and adjust the flame size. Within the enclosed space between the wok 1 and the furnace, the combustion flue gas enters the main body 41 through the flue gas downpipe 31 and the flue gas inlet pipe 42. As it flows through the main body 41 towards the exhaust pipe 45, the high-temperature flue gas exchanges heat with the cooling water in the water circulation pipe 43, reducing the exhaust temperature and utilizing the waste heat of the flue gas. Multiple water circulation pipes 43 are arranged within the main body 41 and the exhaust pipe 44, with both ends of the water circulation pipes 43 connected to the water chamber 6, increasing the contact area between the water and the flue gas. The high-temperature flue gas causes the water in the water circulation pipes 43 and the water chamber 6 to generate steam, which is discharged from the steam collection pipe 64 and transported through pipelines to other applicable equipment, providing a heat source for them.

[0032] Furthermore, the main body 41 is provided with two smoke inlet pipes 42, which are located on the side opposite to the smoke outlet pipe 44. The main body 41 has a ring structure. High-temperature flue gas enters the main body from the smoke inlet pipe 42 on one side of the main body 41 and flows to the smoke outlet pipe 44 in two directions. The water circulation pipe 43 can not only reduce the temperature of the flue gas, but also act as a flow obstruction, reduce the flue gas flow rate, extend the flue gas path, and enable the flue gas to fully exchange heat with the cooling water.

[0033] Furthermore, the water chamber 6 is provided with an inlet pipe 61 and an outlet pipe 63 located on opposite sides. An inlet valve 611 is installed on the inlet pipe 61, and a faucet 631 is installed on the outlet pipe 63 extending out of the stove body 8. The faucet 631 is located above the wok 1, making it convenient to add water to the wok.

[0034] Furthermore, a viewing tube 7 is installed on the front of the stove body 8. The other end of the viewing tube 7 passes through the outer shell 2 and the inner wall 3 of the furnace liner and communicates with the inside of the furnace liner. Both ends of the viewing tube 7 are sealed with light-transmitting material, allowing the flame inside the furnace liner to be observed from the outside. Even further, a clearance groove 46 is provided on the main body 41 for the viewing tube 7 to pass through. The clearance groove 46 is located between the two smoke inlet pipes 42, which can cause the high-temperature flue gas entering the main body 41 from one smoke inlet pipe 42 to preferentially flow to the side away from the other smoke inlet pipe 42 towards the smoke outlet pipe 44.

[0035] Furthermore, a water level gauge 62 is installed on the front of the stove body 8. The water level gauge 62 extends through the outer shell 2 of the furnace liner into the water chamber 6, and can provide feedback on the water level in the water chamber 6. The water level gauge 62 can provide feedback on the water level to the controller 9, which can control the opening and closing of the water inlet valve 611. The controller 9 can also send an early warning to the control terminal, and the operator can control the opening and closing of the water inlet valve 611 through the control terminal.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A direct-vent gas-fired energy-saving waste heat recovery steam boiler, characterized in that, It includes a furnace chamber, inside which is a burner head connected to a controller, and a wok is installed on top of the furnace chamber, with the wok located directly above the burner head; The furnace chamber includes a furnace chamber shell and a furnace chamber inner wall. The furnace chamber inner wall is provided with a flue gas downward hole. A water chamber is formed between the furnace chamber inner wall and the furnace chamber shell. A waste heat recovery device is provided in the water chamber. The waste heat recovery device includes a hollow body, an inlet pipe that connects the interior of the body to the flue gas downward hole, an outlet pipe that connects to the interior of the body on the side of the body, and several water circulation pipes on the body and the outlet pipe.

2. The direct-vent gas-fired energy-saving waste heat recovery steam boiler stove according to claim 1, characterized in that, The main body is provided with two smoke inlet pipes, which are located on the side opposite to the smoke outlet pipe.

3. The direct-vent gas-fired energy-saving waste heat recovery steam boiler stove according to claim 1, characterized in that, The wok is sealed to the furnace liner.

4. A direct-vent gas-fired energy-saving waste heat recovery steam boiler according to claim 1, characterized in that, It also includes a stove body, with the furnace and controller located inside the stove body. The controller is located outside the furnace and is connected to a control terminal. The controller is equipped with a start switch, an ignition switch, and a flame adjustment switch. The start switch, ignition switch, and flame adjustment switch pass through the stove body and are located on the front of the stove body.

5. A direct-vent gas-fired energy-saving waste heat recovery steam boiler stove according to claim 4, characterized in that, A fire observation tube is installed on the front of the stove body, and the other end of the fire observation tube passes through the outer shell of the furnace and the inner wall of the furnace and communicates with the inside of the furnace.

6. A direct-vent gas-fired energy-saving waste heat recovery steam boiler according to claim 4, characterized in that, A water level gauge is installed on the front of the stove body, and the water level gauge extends into the water chamber through the outer shell of the furnace.

7. A direct-vent gas-fired energy-saving waste heat recovery steam boiler stove according to claim 4, characterized in that, The stove body is equipped with support legs at the bottom.

8. A direct-vent gas-fired energy-saving waste heat recovery steam boiler according to claim 1, characterized in that, The water chamber is equipped with an inlet pipe and an outlet pipe located on opposite sides. The inlet pipe is equipped with an inlet valve, and the outlet pipe extends out of the stove body and is equipped with a faucet located above the wok.

9. A direct-vent gas-fired energy-saving waste heat recovery steam boiler according to claim 1, characterized in that, The top of the water chamber is equipped with a steam collection pipe that connects to the interior of the water chamber.

10. A direct-vent gas-fired energy-saving waste heat recovery steam boiler according to claim 1, characterized in that, The burner head is equipped with an air inlet pipe at the bottom, an air inlet valve on the air inlet pipe, and an igniter at the top of the burner head. The air inlet valve, igniter and controller are associated.

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