Waste heat recovery energy-saving small frying hearth

Abstract

The utility model discloses a waste heat recovery energy-saving small frying hearth, which belongs to the field of cooking ranges, and comprises a furnace pipe, a furnace end is arranged in the furnace pipe, the furnace pipe comprises a furnace pipe shell and a furnace pipe inner wall, a water chamber is formed between the furnace pipe inner wall and the furnace pipe shell, a waste heat recovery device is arranged in the water chamber, a flue gas downward hole is formed in the furnace pipe inner wall, and a flue gas downward hole is formed in the flue gas downward hole. And the flue gas descending hole is communicated with the waste heat recovery device. The exhaust stroke of the smoke is prolonged through the waste heat recovery device, the tail gas waste heat utilization efficiency is high, and the energy-saving purpose is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of stove technology, specifically a waste heat recovery energy-saving stir-fry 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 waste heat recovery energy-saving stir-fry furnace to solve the problems mentioned in the background art.

[0006] This utility model provides a waste heat recovery energy-saving stir-fry stove, including a furnace shell, a burner head inside the furnace shell, the furnace shell including a furnace shell outer shell and a furnace shell inner wall, a water chamber formed between the furnace shell inner wall and the furnace shell, a waste heat recovery device is provided in the water chamber, and a flue gas downward hole is provided on the furnace shell inner wall, the flue gas downward hole is connected to the waste heat recovery device.

[0007] A further solution: The waste heat recovery device is equipped with an exhaust pipe that passes through the water chamber and extends out of the water chamber.

[0008] A further option: The inner wall of the furnace is provided with one or more flue gas downward holes, which are arranged above the exhaust pipe side.

[0009] A further solution: The waste heat recovery device is equipped with a baffle plate located between the exhaust pipe and the flue gas downflow hole.

[0010] A further embodiment: The bottom of the water chamber is connected to an inlet pipe and a drain pipe, and the water chamber is also equipped with an outlet pipe that extends into the top of the water chamber.

[0011] A further solution: The tail end of the burner head is provided with a ignition gas interface, a main gas interface, and a burner head air inlet.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. A waste heat recovery device is installed in the water chamber. High-temperature flue gas enters the waste heat recovery device through the flue gas downflow hole. The waste heat recovery device is equipped with a baffle, which allows the flue gas to flow only to one side. After circulating once, it is discharged through the exhaust pipe, which extends the exhaust path of the flue gas. During the flow of the flue gas in the waste heat recovery device, it fully exchanges heat with the cooling water in the water chamber to provide hot water for users and utilize the waste heat of the flue gas.

[0014] 2. During the process of flue gas being discharged from the furnace by the waste heat recovery device, it will pass through the water chamber again to exchange heat with the cooling water, thus making a second use of the waste heat of the flue gas and improving the efficiency of waste heat utilization.

[0015] 3. The water chamber is located closest to the flame, which can cool the inner wall of the furnace, improve the service life of the furnace, and provide hot water to users. Water enters from the bottom of the water chamber and exits from the top of the water chamber. Water can only be discharged when the water level in the water chamber is high enough to prevent insufficient water in the water chamber, which could cause high-temperature damage to the inner wall of the furnace and the waste heat recovery device, and affect the service life of the furnace. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a front view of an embodiment of the present utility model;

[0018] Figure 2 This is a top view of an embodiment of the present utility model.

[0019] In the diagram: 1-Furnace shell; 2-Furnace inner wall; 21-Flue gas downflow hole; 3-Furnace head; 31-Main gas interface; 32-Tinder gas interface; 33-Furnace head air inlet; 4-Water chamber; 41-Water inlet pipe; 42-Water outlet pipe; 43-Sewage pipe; 5-Waste heat recovery device; 51-Exhaust pipe; 52-Baffle plate. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] Please see Figure 1 As shown, this embodiment provides a waste heat recovery energy-saving stir-fry stove, including a furnace chamber, a burner head 3 inside the furnace chamber, and a main gas interface 31, a burner head air inlet 33, and a ignition gas interface 32 at the tail of the burner head 3. The gas supplied from the main gas interface 31 mixes with the fresh air supplied from the burner head air inlet 33. Upon startup, the ignition gas interface 32 releases a small amount of gas, which is ignited by the ignition system to form a stable flame, providing a ignition source for the subsequent combustion of the mixed gas.

[0023] The furnace liner includes a furnace liner shell 1 and a furnace liner inner wall 2. A sealed water chamber 4 is formed between the furnace liner inner wall 2 and the furnace liner shell 1. A waste heat recovery device 5 is installed in the water chamber 4. The furnace liner inner wall 2 is provided with a flue gas downhole 21, which is connected to the waste heat recovery device 5.

[0024] The water chamber 4 is equipped with an inlet pipe 41 and a drain pipe 43 at its bottom, and an outlet pipe 42 extending into the top of the water chamber 4. Water enters from the bottom of the water chamber 4 and exits from the top, with water only exiting when the water level in the water chamber 4 is high enough to prevent insufficient water in the water chamber 4, which could cause high-temperature damage to the inner wall 2 of the furnace and the waste heat recovery device 5, affecting the service life of the furnace. The inlet pipe 41, outlet pipe 42, and drain pipe 43 are all equipped with valves. Cooling water can enter the water chamber 4 through the inlet pipe 41 for storage and heat exchange. Opening the valve on the outlet pipe 42 allows water to be supplied to the user. The user can periodically open the valve on the drain pipe 43 to drain the water chamber 4.

[0025] Furthermore, the waste heat recovery device 5 is equipped with an exhaust pipe 51, which passes through the water chamber 4 and extends out of the water chamber 4. During the process of the flue gas being discharged from the furnace by the waste heat recovery device 5, it will pass through the water chamber 4 again to exchange heat with the cooling water, thus making a second use of the waste heat of the flue gas.

[0026] Furthermore, the inner wall 2 of the furnace is provided with one or more flue gas downward holes 21, which are arranged above the exhaust pipe side to prevent the high-temperature flue gas coming out of the flue gas downward holes 21 from being directly discharged through the exhaust pipe 51.

[0027] Specifically, the waste heat recovery device 5 is equipped with a baffle 52 located between the exhaust pipe 51 and the flue gas downflow hole 21. This baffle 52 isolates the annular internal cavity of the waste heat recovery device, requiring the high-temperature flue gas exiting from the downflow hole 21 to circulate nearly once within the internal cavity before exiting through the exhaust pipe 51. This extends the flue gas's exhaust path, allowing for thorough heat exchange with the cooling water in the water chamber during its flow within the waste heat recovery device. This provides hot water to the user, utilizes the waste heat from the flue gas, and improves the efficiency of waste heat utilization.

[0028] 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.

[0029] 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 waste heat recovery energy saving small frying hearth, characterized in that, The device includes a furnace shell, within which a burner head is installed. The furnace shell comprises a furnace shell outer shell and a furnace shell inner wall. A water chamber is formed between the furnace shell and the inner wall. A ring-shaped waste heat recovery device is installed within the water chamber. A flue gas downflow hole is provided on the inner wall of the furnace shell, and the flue gas downflow hole is connected to the waste heat recovery device. The waste heat recovery device is equipped with an exhaust pipe, and the flue gas downflow hole is located above and to the side of the exhaust pipe. A baffle is provided inside the waste heat recovery device, and the baffle is located between the exhaust pipe and the flue gas downflow hole.

2. A small waste heat recovery energy saving stir-frying furnace according to claim 1, characterized in that, The exhaust pipe passes through the water chamber and extends outside the water chamber.

3. The small waste heat recovery energy saving stir-frying furnace according to claim 2, characterized in that, The inner wall of the furnace is provided with one or more flue gas downward holes.

4. The small waste heat recovery energy saving stir-frying furnace according to claim 1, characterized in that, The bottom of the water chamber is connected to an inlet pipe and a drain pipe, and the water chamber is also equipped with an outlet pipe that extends into the top of the water chamber.

5. The heat recovery energy saving small frying hearth according to claim 1, characterized in that, The tail end of the burner head is provided with a ignition gas interface, a main gas interface, and a burner head air inlet.

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