High-efficiency energy-saving cooking range

Abstract

This utility model relates to the field of stove technology and provides a high-efficiency and energy-saving stove, including a panel, an upper and lower burner platform located on the top of the panel, a burner head penetrating the panel, and a heat exchange component located at the bottom of the panel. The upper burner platform includes an outer burner wall, an inner burner wall, and a heat insulation layer between the outer and inner burner walls. The heat exchange component includes a water tank, a flue gas circulation pipe located inside the water tank, and a water inlet and a steam outlet located on the outer wall of the water tank. A flue gas outlet pipe is located at the bottom of the upper burner platform and is connected to the flue gas circulation pipe. This device solves the problem of heat from the furnace directly heating the water in the water tank, causing a drop in the furnace temperature and affecting the normal cooking temperature of the stove. It achieves the effect of avoiding direct heating of the kitchen water in the water tank by heat from the furnace, ensuring that the internal temperature of the furnace does not drop during cooking, and using flue gas to heat the kitchen water, thereby improving the utilization efficiency of the stove.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, and more specifically, to a high-efficiency and energy-saving stove. Background Technology

[0002] In commercial environments such as hotels and restaurants, kitchen stoves generate a lot of heat when cooking. Apart from the needs of cooking, most of this heat is directly emitted outdoors with the fumes, resulting in heat waste. Meanwhile, the kitchen environment has a high demand for hot water, but heating the water would increase costs. Therefore, recovering the heat from the stove for heating hot water can effectively save costs.

[0003] Patent CN221444306U discloses an energy-saving waste heat recovery stove. Heat pipes and heat-conducting fins exchange heat between the high-temperature flue gas and the cold water in the water storage tank, thereby cooling the high-temperature flue gas and raising the water temperature in the water storage tank, thus recovering and utilizing the heat from the high-temperature flue gas. After the flue gas exchanges heat with the cold water in the water storage tank through the heat-conducting pipe, it is discharged through a three-way pipe, which then further transports the flue gas into the stove for re-combustion and utilization, improving the utilization rate of flue gas.

[0004] While the aforementioned stoves can recover and reuse the flue gas from the furnace during heating, using the high temperature of the flue gas to heat the water in the tank, the water tank is directly located outside the furnace, causing the water in the tank to be in direct contact with the furnace. During cooking, even if the water in the tank is fully heated, the maximum temperature will not exceed the boiling point of water, while the cooking temperature of commercial stoves is much higher than the temperature of the water in the tank. Some of the heat from the furnace is transferred through the water tank to heat the water there, causing a drop in the furnace temperature and affecting the stove's normal cooking temperature. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a highly efficient and energy-saving stove that avoids direct heating of kitchen water in the water storage tank by the heat inside the furnace, sets up a heat insulation layer to ensure that the internal temperature of the stove furnace does not drop during cooking, and uses the heat in the flue gas to heat the kitchen water, thereby improving the utilization efficiency of the stove.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-efficiency energy-saving stove includes a panel, an upper burner and a lower burner mounted on top of the panel, a burner head penetrating the panel, and a heat exchange assembly mounted at the bottom of the panel. The upper burner is mounted on top of the lower burner and includes an outer burner wall, an inner burner wall, and a heat insulation layer between the outer and inner burner walls. The heat exchange assembly includes a water tank, a flue gas circulation pipe inside the water tank, and a water inlet and a steam outlet on the outer wall of the water tank. A flue gas outlet pipe is provided at the bottom of the upper burner and is connected to the flue gas circulation pipe.

[0008] The present invention is further configured such that: the outer furnace wall and the inner furnace wall are configured as parallel conical structures, and the top of the outer furnace wall and the inner furnace wall are provided with an annular limiting part.

[0009] The present invention is further configured such that: a flue gas inlet is provided at the bottom of the inner furnace wall, a flue gas chamber is provided at the bottom of the insulation layer, and a flue gas outlet communicating with the flue gas pipe is provided at the bottom of the flue gas chamber.

[0010] The present invention is further configured such that: the lower furnace platform includes a support part connected to the upper furnace platform and a connecting part connected to the panel; the support part is configured as an arc structure; and a heat preservation cavity is provided inside the support part.

[0011] The present invention is further configured such that: the water storage tank is configured as a hollow ring structure, the water storage tank is provided with a heat exchange cavity, and the flue gas circulation pipe is arranged around the heat exchange cavity.

[0012] The present invention is further configured such that: a smoke inlet and a smoke outlet are provided on the inner wall of the water storage tank, the smoke inlet is located at the top of the smoke outlet, one end of the smoke inlet is connected to the smoke outlet pipe and the other end is connected to the flue gas circulation pipe.

[0013] The present invention is further configured such that: the water inlet is located at the bottom of the water storage tank, the steam outlet is located at the top of the water storage tank, and the water inlet and the steam outlet are respectively connected to the heat exchange chamber.

[0014] By adopting the above technical solution, the kitchen water requiring heating enters the heat exchange chamber through the inlet. During the flow of flue gas within the flue gas circulation duct, heat exchange occurs between the flue gas and the kitchen water in the heat exchange chamber, utilizing the heat from the flue gas to heat the kitchen water. After heating, the flue gas is discharged through the exhaust port, and the generated steam is discharged through the steam outlet.

[0015] The present invention is further configured such that: the burner head is located at the bottom of the upper furnace platform and is fixedly connected to the inner furnace wall; a fire cover is provided at the top of the burner head; and an air inlet pipe is connected to the bottom of the burner head.

[0016] The beneficial effects of this utility model are:

[0017] The heat exchange components are installed at the bottom of the panel, and an insulation layer is set between the outer and inner walls of the oven. On the one hand, the heat insulation properties of the insulation layer can reduce the heat diffusion inside the oven during cooking and keep the cooking temperature inside the oven from dropping. On the other hand, the high-temperature flue gas inside the flue gas circulation pipe can exchange heat with the kitchen water to heat the kitchen water and form steam. The steam is then used for steaming rice, effectively improving the utilization efficiency of the stove. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a structural schematic diagram of the high-efficiency energy-saving stove of this utility model.

[0020] Figure 2 for Figure 1 The top view shown.

[0021] Figure 3 For along Figure 2 A cross-sectional view showing section line AA.

[0022] Figure 4 for Figure 3 A magnified view of a portion of region B shown.

[0023] Figure 5 for Figure 3 The image shows a cross-sectional view with the heat exchange components removed.

[0024] Figure 6 for Figure 3 The diagram shows the structure of the heat exchange assembly.

[0025] Explanation of reference numerals in the attached diagram: 1. Panel;

[0026] 2. Upper furnace platform; 21. Limiting part; 22. Outer furnace wall; 23. Inner furnace wall; 24. Flue gas inlet; 25. Insulation layer; 26. Flue gas chamber; 27. Flue gas outlet; 28. Flue gas pipe;

[0027] 3. Lower furnace platform; 31. Support section; 32. Connecting section; 33. Insulation cavity;

[0028] 4. Burner head; 41. Burner cap; 42. Inlet pipe;

[0029] 5. Heat exchange components; 51. Water storage tank; 52. Flue gas inlet; 53. Flue gas outlet; 54. Flue gas circulation pipe; 55. Heat exchange chamber; 56. Water inlet; 57. Steam outlet. Detailed Implementation

[0030] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Please refer to Figure 1-3 A high-efficiency and energy-saving stove includes a panel 1, an upper burner 2 and a lower burner 3 located on top of the panel 1, a burner head 4 penetrating the panel 1, and a heat exchange component 5 located at the bottom of the panel 1. The panel 1 is horizontally positioned, the upper burner 2 is located on top of the lower burner 3, and the burner head 4 is located at the bottom of the upper burner 2. During cooking, the pot is placed on the upper burner 2, which contains a combustion chamber. The lower burner 3 is connected to the panel 1 and separates the upper burner 2 from the heat exchange component 5.

[0032] Please refer to Figure 1-5 The upper furnace platform 2 includes an outer furnace wall 22, an inner furnace wall 23, and a heat insulation layer 25 disposed between the outer furnace wall 22 and the inner furnace wall 23. The outer furnace wall 22 and the inner furnace wall 23 are configured as parallel conical structures with their axes coinciding. The diameter of the outer furnace wall 22 is larger than that of the inner furnace wall 23. Annular limiting parts 21 are provided at the top of the outer furnace wall 22 and the inner furnace wall 23, respectively, and the tops of the outer furnace wall 22 and the inner furnace wall 23 are connected to the limiting parts 21. During cooking, the pot is placed directly on the limiting parts 21, with the bottom of the pot in direct contact with the furnace chamber inside the inner furnace wall 23. The heat insulation layer 25 is filled between the outer furnace wall 22 and the inner furnace wall 23 to reduce the diffusion of temperature within the furnace chamber during cooking and to ensure the cooking temperature within the furnace chamber. The heat insulation layer 25 is made of asbestos, utilizing the heat insulation properties of asbestos to maintain the cooking temperature within the furnace chamber. In other embodiments, the insulation layer 25 can also be made of other materials with good thermal insulation properties, such as rock wool or glass wool. A flue gas inlet 24 is provided at the bottom of the inner furnace wall 23, and a flue gas chamber 26 is provided at the bottom of the insulation layer 25. The flue gas chamber 26 is an annular cavity surrounding the bottom of the upper stove platform 2, and it communicates with the flue gas inlet 24. High-temperature flue gas generated in the furnace during cooking can enter the flue gas chamber 26 through the flue gas inlet 24. A flue gas outlet pipe 28 is provided at the bottom of the upper stove platform 2, and it is connected to the heat exchange assembly 5. A flue gas outlet 27 communicating with the flue gas outlet pipe 28 is provided on the bottom wall of the flue gas chamber 26. The high-temperature flue gas in the flue gas chamber 26 can be discharged through the flue gas outlet 27 to the flue gas outlet pipe 28, and finally enters the heat exchange assembly 5 through the flue gas outlet pipe 28 to heat the kitchen water.

[0033] Please refer to Figure 1-5The lower furnace platform 3 includes a support portion 31 connected to the upper furnace platform 2 and a connecting portion 32 connected to the panel 1. The support portion 31 is designed with an arc structure and is fitted onto the outside of the upper furnace platform 2. The support portion 31 is fixedly connected to the outer furnace wall 22, which serves to separate the upper furnace platform 2 from the heat exchange assembly 5 and to support the upper furnace platform 2 and the pot placed on it. An insulation cavity 33 is provided inside the support portion 31. The air inside the insulation cavity 33 further insulates the furnace chamber on top of the insulation layer 25, reducing heat loss from the furnace chamber. The connecting portion 32 surrounds the support portion 31, and its connection to the panel 1 ensures reliable installation of the upper furnace platform 2 and the lower furnace platform 3.

[0034] Please refer to Figure 1-5 The burner head 4 is fixedly connected to the inner furnace wall 23. A burner cap 41 is provided on the top of the burner head 4. The burner cap 41 has a circular structure and several through holes for gas discharge. An air inlet pipe 42 is connected to the bottom of the burner head 4. Gas can enter the interior of the burner head 4 through the air inlet pipe 42. After mixing with air inside the burner head 4 and being ignited, the flame is released from the burner cap 41 to heat the pot placed on the limiting part 21.

[0035] Please refer to Figure 3-6 The heat exchange assembly 5 includes a water storage tank 51, a flue gas circulation pipe 54 disposed inside the water storage tank 51, and a water inlet 56 and a steam outlet 57 disposed on the outer wall of the water storage tank 51. The water storage tank 51 is configured as a hollow annular structure, with its top connected to the bottom of the panel 1. A heat exchange chamber 55 is disposed inside the water storage tank 51, with the water inlet 56 located at the bottom of the water storage tank 51 and the steam outlet 57 located at the top of the water storage tank 51. The water inlet 56 and the steam outlet 57 are respectively connected to the heat exchange chamber 55. Kitchen water requiring heating can enter the heat exchange chamber 55 through the water inlet 56, and the steam generated after heating is discharged through the steam outlet 57. A smoke inlet 52 and a smoke outlet 53 are provided on the inner wall of the water storage tank 51, with the smoke inlet 52 located at the top of the smoke outlet 53. The flue gas circulation pipe 54 is arranged around the heat exchange chamber 55. Specifically, one end of the smoke inlet 52 is connected to the smoke outlet pipe 28, and the other end is connected to the flue gas circulation pipe 54. One end of the flue gas recirculation duct 54 is connected to the smoke inlet 52, and the other end is connected to the smoke outlet 53. The flue gas in the exhaust pipe 28 can enter the flue gas recirculation duct 54 through the smoke inlet 52. During its flow within the flue gas recirculation duct 54, the flue gas can exchange heat with the kitchen water in the heat exchange chamber 55, using the heat from the flue gas to heat the kitchen water. After heating, the flue gas is discharged through the smoke outlet 53.

[0036] Specifically, during the cooking process, a heat insulation layer 25 is filled between the outer furnace wall 22 and the inner furnace wall 23. The heat insulation properties of the layer 25 reduce the diffusion of temperature within the furnace during cooking, maintaining the cooking temperature inside the furnace. The high-temperature flue gas generated in the furnace enters the flue gas chamber 26 through the flue gas inlet 24, and then is discharged to the flue gas outlet 28 through the flue gas outlet 27. The flue gas in the flue gas outlet 28 enters the flue gas circulation pipe 54 through the flue gas inlet 52. Simultaneously, kitchen water requiring heating enters the heat exchange chamber 55 through the water inlet 56. During the flow of the flue gas within the flue gas circulation pipe 54, it exchanges heat with the kitchen water in the heat exchange chamber 55, using the heat from the flue gas to heat the kitchen water and form steam. After heating, the flue gas is discharged through the flue gas outlet 53, and the steam is discharged through the steam outlet 57.

[0037] The heat exchange component 5 is installed at the bottom of the panel 1, and a heat insulation layer 25 is set between the outer furnace wall 22 and the inner furnace wall 23. On the one hand, the heat insulation performance of the heat insulation layer 25 can be used to reduce the diffusion of temperature in the furnace during cooking and keep the cooking temperature in the furnace from dropping. On the other hand, the high-temperature flue gas inside the flue gas circulation pipe 54 can exchange heat with the kitchen water to heat and form steam. The steam is used for subsequent steaming of rice, which effectively improves the utilization efficiency of the stove.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-efficiency energy-saving stove, characterized in that: The furnace includes a panel (1), an upper furnace platform (2) and a lower furnace platform (3) set on the top of the panel (1), a furnace head (4) set through the panel (1), and a heat exchange assembly (5) set at the bottom of the panel (1). The upper furnace platform (2) is set on top of the lower furnace platform (3). The upper furnace platform (2) includes an outer furnace wall (22), an inner furnace wall (23), and a heat insulation layer (25) set between the outer furnace wall (22) and the inner furnace wall (23). The heat exchange assembly (5) includes a water tank (51), a flue gas circulation pipe (54) set inside the water tank (51), and a water inlet (56) and a steam outlet (57) set on the outer wall of the water tank (51). A flue gas outlet pipe (28) is set at the bottom of the upper furnace platform (2), and the flue gas outlet pipe (28) is connected to the flue gas circulation pipe (54).

2. The high-efficiency energy-saving stove according to claim 1, characterized in that: The outer furnace wall (22) and the inner furnace wall (23) are configured as parallel conical structures, and the top of the outer furnace wall (22) and the inner furnace wall (23) are provided with an annular limiting part (21).

3. The high-efficiency energy-saving stove according to claim 2, characterized in that: The bottom of the inner furnace wall (23) is provided with a flue gas inlet (24), the bottom of the heat insulation layer (25) is provided with a flue gas chamber (26), and the bottom of the flue gas chamber (26) is provided with a flue gas outlet (27) that communicates with the flue gas pipe (28).

4. The high-efficiency energy-saving stove according to claim 1, characterized in that: The lower furnace platform (3) includes a support part (31) connected to the upper furnace platform (2) and a connecting part (32) connected to the panel (1). The support part (31) is configured as an arc structure, and a heat preservation cavity (33) is opened inside the support part (31).

5. A high-efficiency energy-saving stove according to claim 1, characterized in that: The water storage tank (51) is configured as a hollow ring structure, and a heat exchange chamber (55) is provided inside the water storage tank (51). The flue gas circulation pipe (54) is arranged around the heat exchange chamber (55).

6. A high-efficiency energy-saving stove according to claim 5, characterized in that: The inner wall of the water storage tank (51) is provided with a smoke inlet (52) and a smoke outlet (53). The smoke inlet (52) is located at the top of the smoke outlet (53). One end of the smoke inlet (52) is connected to the smoke outlet pipe (28), and the other end is connected to the flue gas circulation pipe (54).

7. A high-efficiency energy-saving stove according to claim 6, characterized in that: The water inlet (56) is located at the bottom of the water storage tank (51), and the steam outlet (57) is located at the top of the water storage tank (51). The water inlet (56) and the steam outlet (57) are respectively connected to the heat exchange chamber (55).

8. A high-efficiency energy-saving stove according to claim 1, characterized in that: The burner head (4) is located at the bottom of the upper furnace platform (2) and is fixedly connected to the inner furnace wall (23). The top of the burner head (4) is provided with a fire cover (41), and the bottom of the burner head (4) is connected with an air inlet pipe (42).

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