Waste heat recycling stove

Abstract

The application discloses a waste heat recycling stove, which comprises a stove body and at least one heat conducting pipeline, and the bottom of the stove body is provided with a combustion channel, and a burner is arranged in the combustion channel. The heat conducting pipeline comprises a contact section and a surrounding section which are connected with each other. The contact section is located on the outside of the stove body, and is adapted to cover the combustion channel along the side surface and the bottom surface of the stove body in sequence. The surrounding section is located on the inside of the stove body, and is adapted to ascend along the circumference of the burner in the combustion channel and lead out from one side of the stove body. The application can make full use of the waste heat generated during the use of the stove to perform water boiling and steam boiling operations, and does not affect the original functions and performances of the stove, and can effectively improve the energy utilization efficiency.

Description

Technical Field

[0001] This application relates to the field of kitchen appliances technology, specifically to a waste heat recovery stove. Background Technology

[0002] Large wok stoves are a type of Chinese cooking stove in commercial kitchen equipment. They are mainly used in large canteens such as schools, factories, and hotels to cook large pot dishes. They are usually equipped with pots with a diameter of 80 centimeters or more for stir-frying and braising large pot dishes. Currently, large wok stoves in commercial kitchen equipment on the market are usually designed and optimized from an energy-saving perspective, and the energy-saving effect can generally reach about 35%.

[0003] However, existing stoves have the following drawbacks: energy waste mainly occurs during the usage phase. Optimizing only from an energy-saving perspective results in a low upper limit for energy utilization, which still leads to energy waste. In particular, large pot stoves consume a lot of energy and have strong firepower, generating a lot of heat. Correspondingly, they also generate more waste heat when cooking. Summary of the Invention

[0004] One objective of this application is to provide a waste heat recovery stove that can reduce energy waste.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a waste heat recovery and utilization stove, comprising a stove body and at least one heat-conducting pipe, wherein a combustion channel is provided at the bottom of the stove body, and a burner is adapted to be installed in the combustion channel; the heat-conducting pipe includes a contact section and a surrounding section connected to each other; the contact section is located on the outside of the stove body, and the contact section is adapted to sequentially surround and cover the combustion channel along the side and bottom of the stove body; the surrounding section is located on the inside of the stove body, and the surrounding section is adapted to rise around the burner in the combustion channel in a circumferential direction and be led out from one side of the stove body.

[0006] In some embodiments, the heat-conducting pipe has a hollow structure, the contact section is adapted to connect to a water tank, the heat-conducting pipe is adapted to store water and form a liquid section, the end of the surrounding section rises and forms a liquid-free section, and the liquid-free section is adapted to output steam.

[0007] In some embodiments, a water vapor conversion point is formed between the liquid section and the liquid-free section, and the height of the position of the surrounding section leading out of the stove body is higher than the height of the liquid introduced by the contact section, so that the water vapor conversion point is located inside the stove body.

[0008] In some embodiments, the water vapor conversion point is located at or near the burner in the horizontal direction.

[0009] In some embodiments, the surrounding segment includes a first segment and a second segment, the first segment being connected at both ends to the contact segment and the second segment respectively, the second segment being located above the first segment, and the second segment spiraling around in a gradually expanding manner toward the bottom of the stove body and the burner.

[0010] In some embodiments, there are multiple heat-conducting pipes, which are arranged side-by-side and attached to each other in the contact section and the first segment, and the heat-conducting pipes separate from each other in the second segment toward the bottom of the stove body and away from the burner.

[0011] In some embodiments, multiple heat-conducting pipes gradually converge and extend out from the top of the second segment.

[0012] In some embodiments, the first segment is in contact with the sidewall of the combustion channel within the combustion channel; the first segment is spaced around the periphery of the burner, and the inner diameter of the first segment at its minimum position is greater than the outer diameter of the burner at its maximum position.

[0013] In some embodiments, the contact segment is adapted to spirally encircle the side and bottom of the stove body in sequence to the combustion channel, and the encircling segment is adapted to spirally encircle the burner in the combustion channel; adjacent spiral winding structures of the contact segment are in close contact with each other.

[0014] In some embodiments, a viewing opening is provided at the lower part of one side of the stove body; and a smoke exhaust port is provided at the upper part of one side of the stove body.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: the stove of this application absorbs as much residual heat and waste heat as possible from the stove body and the area around the burner by setting heat conduction pipes on the stove body. The arrangement of the heat conduction pipes does not affect the original cooking function and heating performance of the stove. The heat conduction pipes can realize operations such as boiling water and steaming. By connecting with external equipment to export hot water and / or steam, the secondary utilization of energy can be indirectly realized, thereby reducing energy waste. Attached Figure Description

[0016] Figure 1 This is an overall structural view according to a preferred embodiment of the present application.

[0017] Figure 2 This is a top view according to a preferred embodiment of the present application.

[0018] Figure 3 This is a preferred embodiment according to this application. Figure 2 A cross-sectional view along the AA direction.

[0019] Figure 4 This is a schematic diagram showing the height difference between the heat-conducting pipe leading to and from the main body of the stove according to a preferred embodiment of this application.

[0020] Figure 5 This is a schematic diagram of the usage state according to a preferred embodiment of this application.

[0021] Figure 6 This is a preferred embodiment according to this application. Figure 3 A magnified view of point a in the middle.

[0022] Figure 7 This is a schematic diagram of a structure with an increased height of the surrounding section according to another preferred embodiment of this application.

[0023] Figure 8 This is a schematic diagram of the contact segment encryption structure according to another preferred embodiment of this application.

[0024] In the diagram: 1. Main body of the stove; 11. Combustion channel; 12. Observation port; 13. Smoke outlet; 2. Heat conduction pipe; 21. Contact section; 22. Surrounding section; 221. First section; 222. Second section; 3. Burner; 4. Water vapor conversion point. Detailed Implementation

[0025] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0027] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] The following description, in conjunction with the accompanying drawings, further illustrates this application:

[0030] like Figures 1 to 8 As shown, this application provides a waste heat recovery stove, including a stove body 1 and at least one heat conduction pipe 2. The bottom of the stove body 1 is provided with a combustion channel 11, and a burner 3 is suitable for being installed in the combustion channel 11. In this application, the stove body 1 can be a hollow columnar structure with an open top. The burner 3 passes through the combustion channel 11 and enters the stove body 1. The burner 3 can burn inside the stove body 1, thereby heating the pots and other utensils placed above the stove body 1.

[0031] The heat conduction pipe 2 is adapted to be introduced from the outside of the stove body 1 and to cover and surround the outside of the stove body 1 to the combustion channel 11. The heat conduction pipe 2 is adapted to rise around the burner 3 in the combustion channel 11 and be led out from one side of the stove body 1. The heat conduction pipe 2 is an integrated structure design, with part of it located on the outside of the stove body 1 to absorb the heat on the stove body 1, and part of it located inside the stove body 1 to absorb the heat emitted by the burner 3 to the surrounding area. After absorbing heat, the heat conduction pipe 2 can perform operations such as boiling water and steaming by itself or by transferring the heat to the outside.

[0032] Meanwhile, the heat conduction pipe 2 has an open structure above the burner 3, which can reduce the obstruction of the space above the burner 3, so that the heat generated by the burner 3 can be effectively transferred to the pot above the main body of the stove 1. In addition, the heat conduction pipe 2 can also guide the heat generated by the burner 3 to converge and transfer upward to a certain extent, further improving the heating performance of the burner 3.

[0033] To achieve the above functions, the heat conduction pipe 2 is specifically designed to include a contact section 21 and a surrounding section 22 that are connected to each other. The contact section 21 is located on the outside of the stove body 1 and is adapted to surround and cover the combustion channel 11 along the side and bottom of the stove body 1. Combined with the stove body 1's hollow columnar structure design with an open top, the contact section 21 can cover most of the outer area of ​​the stove body 1, thereby achieving large-scale waste heat absorption. The surrounding section 22 is located on the inside of the stove body 1 and is adapted to rise around the burner 3 in the combustion channel 11 and be led out from one side of the stove body 1. When the burner 3 burns, it dissipates heat to the surroundings. The surrounding section 22 can receive and utilize the heat from the burner 3 in the surrounding direction. The structural arrangement of the contact section 21 and the surrounding section 22 avoids the normal use structure of the stove body 1 and will not affect the placement of pots on the stove body 1 or the heating of pots by the burner 3.

[0034] It is understandable that the contact section 21 can also be arranged inside the main body 1 of the stove. However, since both the contact section 21 and the surrounding section 22 are located inside the main body 1 of the stove, it is easy for the heat conduction pipe 2 to take too much heat from the burner 3 and reduce the absorption of residual heat from the main body 1 of the stove, which may lead to a decrease in energy utilization.

[0035] like Figures 1 to 5 In the embodiment shown, the contact section 21 is adapted to spirally encircle the side and bottom of the stove body 1 to the combustion channel 11 in sequence, and the encircling section 22 is adapted to spirally encircle the burner 3 in the combustion channel 11. The spiral structure can improve the smoothness of the transition of the heat conduction pipe 2 on each side, facilitate the layout and design, reduce the probability of structural interference, and have higher structural stability.

[0036] In this application, the heat-conducting pipe 2 aims to utilize the waste heat absorbed from the main body 1 of the stove in the most efficient way. It can directly realize the operation of boiling water and steam by designing its own structure. Preferably, the heat-conducting pipe 2 is designed as a hollow structure. The contact section 21 is suitable for connecting to the water tank. The heat-conducting pipe 2 is suitable for storing water and forming a liquid section. The end of the surrounding section 22 is raised and forms a liquid-free section. The liquid-free section is suitable for outputting steam.

[0037] It is understandable that after the heat-conducting pipe 2 absorbs heat and heats up, it can heat the liquid inside it. After the liquid reaches the boiling point, it can start to generate steam in the liquid-free section. Since the liquid-free section is located at the end of the surrounding section 22, the steam can be directly output to the outside for use, such as steaming vegetables.

[0038] like Figure 3 and 4In the illustrated embodiment, a water vapor conversion point 4 is formed between the liquid section and the liquid-free section. The height of the position where the surrounding section 22 leads out of the stove body 1 is higher than the height of the liquid introduced by the contact section 21, so that the water vapor conversion point 4 is located inside the stove body 1. Since the principle of the heat conduction pipe 2 is to utilize waste heat, the water vapor conversion point 4 is located outside the stove body 1. There will be more liquid in the heat conduction pipe 2, which can store more heat without boiling. Moreover, the water vapor conversion point 4 is outside the stove body 1 and will not be directly heated, which may result in the water vapor conversion point 4 having a low temperature rise and boiling rate, thereby affecting the efficiency of steam burning.

[0039] It is understandable that by adjusting the height difference between the position of the stove body 1 led out by the surrounding section 22 and the height difference between the liquid introduced by the contact section 21, the distance of the water-steam conversion point 4 in the horizontal direction can be made closer to or located on the burner 3, so that the heating and boiling speed at the water-steam conversion point 4 is faster, thereby improving the efficiency of steam burning.

[0040] It is understandable that the heat conduction pipe 2 is first introduced from the outside of the stove body 1, and then leads out after entering the inside of the stove body 1. This also takes into account the distribution location of the water-vapor conversion point 4. Since the waste heat generated at the stove body 1 is less than the waste heat generated around the burner 3, the heat conduction pipe 2 can use the waste heat at the stove body 1 for initial heating, and then use the waste heat around the burner 3 for secondary heating, thereby achieving efficient heating as a whole. If arranged in the opposite way, with the water-vapor conversion point 4 located on the outside of the stove body 1, the heat conduction pipe 2 on the outside of the stove body 1 may not have enough heating efficiency to generate steam at the water-vapor conversion point 4.

[0041] like Figure 5 In the embodiment shown, the surrounding section 22 includes a first segment 221 and a second segment 222. The two ends of the first segment 221 are connected to the contact section 21 and the second segment 222, respectively. The second segment 222 is located above the first segment 221. The second segment 222 spirals around the burner 3 in a gradually expanding manner away from the bottom of the cooktop body 1 and the burner 3. The second segment 222 can form a funnel-shaped outward expansion structure above the burner 3, so that the heat generated by the burner 3 can diffuse outward during the rising process, thereby covering the entire top opening of the cooktop body 1, so that the pot placed on the cooktop body 1 can be heated evenly. That is, the purpose of designing the second segment 222 is to ensure the original cooking performance of the cooktop body 1 and the burner 3.

[0042] like Figures 1 to 8In the illustrated embodiment, there are multiple heat-conducting pipes 2. The heat-conducting pipes 2 are arranged side by side and attached to each other in the contact section 21 and the first segment 221. The heat-conducting pipes 2 are separated from each other in the second segment 222, moving away from the bottom of the stove body 1 and the burner 3. It can be understood that the efficiency of the heat-conducting pipes 2 in burning steam is positively correlated with the cross-section of the hollow channel of the heat-conducting pipes 2. Therefore, by increasing the number of heat-conducting pipes 2, the efficiency of burning steam can be greatly improved. At the same time, the structural arrangement of the heat-conducting pipes 2 in this application can adapt to single or multiple heat-conducting pipes 2, and it is not easy to cause structural interference and will not increase the difficulty of arrangement.

[0043] like Figure 1 , 3 In the embodiments shown in 5, 7 and 8, multiple heat-conducting pipes 2 gradually converge and lead out at the top of the second segment 222, which facilitates the unified extraction, collection and utilization of the steam generated at the heat-conducting pipes 2.

[0044] like Figure 6 In the embodiment shown, the first segment 221 is in close contact with the side wall of the combustion channel 11 within the combustion channel 11, increasing the contact area between the first segment 221 and the stove body 1, while also improving the structural support of the stove body 1 for the surrounding segment 22.

[0045] like Figure 6 In the embodiment shown, the first segment 221 is spaced around the periphery of the burner 3. The inner diameter of the smallest position of the first segment 221 is larger than the outer diameter of the largest position of the burner 3, which can reduce the probability of direct contact between the burner 3 and the first segment 221 and improve the operational stability of the burner 3.

[0046] like Figure 7 In the embodiment shown, the second segment 222 can continuously expand and increase in height, and then lead out the main body 1 of the stove from one side in a near-horizontal manner, which can increase the receiving area of ​​the second segment 222 for the waste heat from the burner 3, thereby improving the efficiency of boiling water and steam.

[0047] like Figure 8 In the embodiment shown, the two adjacent spiral winding structures of the contact segment 21 are in close contact with each other, so that the contact segment 21 is densely distributed on the outer surface of the stove body 1, which can improve the absorption and utilization efficiency of the contact segment 21 for the waste heat of the stove body 1.

[0048] Understandably, the denser the contact sections 21 are, especially when water flows through them, the stronger their heat storage capacity. Therefore, the contact sections 21 can also serve as heat insulation and protection, improving the safety of the stove during use and reducing the probability of burns.

[0049] After the heat conduction pipe 2 is installed on the main body 1 of the stove, it can boil water and generate steam without affecting the cooking function of the main body 1, thereby improving energy utilization.

[0050] In some embodiments, a viewing opening 12 is provided at the lower part of one side of the stove body 1, through which the heat conduction pipe 2 can be introduced. The status of the heat conduction pipe 2 and the burner 3 can be observed at the viewing opening 12.

[0051] In some embodiments, a smoke exhaust port 13 is provided on the upper part of one side of the stove body 1, and the heat conduction pipe 2 can be led out from above the smoke exhaust port 13 to reduce the impact on the smoke exhaust effect of the smoke exhaust port 13.

[0052] In some embodiments, the main body 1 of the stove is made of clay or metal. Clay has a better heat preservation effect, reduces heat loss and improves the heating effect, while metal has a better heat conduction effect, which makes it easier for the heat conduction pipe 2 to obtain heat from the main body 1 of the stove more quickly.

[0053] In some embodiments, the heat conduction pipe 2 is made of copper, which is pollution-free, has high heat absorption, heat conduction and heat storage efficiency, and is convenient for boiling water and steam.

[0054] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are only the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope of this application. All such changes and modifications fall within the scope of this application as claimed. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery stove, characterized in that: The stove body includes a main body and at least one heat-conducting pipe. A combustion channel is provided at the bottom of the main body, and a burner is adapted to be installed in the combustion channel. The heat-conducting pipe includes a contact section and a surrounding section connected to each other. The contact section is located on the outside of the main body and is adapted to sequentially surround and cover the combustion channel along the side and bottom of the main body. The surrounding section is located on the inside of the main body and is adapted to rise around the burner in the combustion channel and extend out from one side of the main body. The heat-conducting pipe has a hollow structure. The contact section is suitable for connecting to a water tank. The heat-conducting pipe is suitable for storing water and forming a liquid section. The end of the surrounding section rises and forms a liquid-free section. The liquid-free section is suitable for outputting steam.

2. The waste heat recovery and utilization stove as described in claim 1, characterized in that: A water vapor conversion point is formed between the liquid section and the liquid-free section. The height of the position where the surrounding section leads out of the stove body is higher than the height of the liquid introduced by the contact section, so that the water vapor conversion point is located inside the stove body.

3. A waste heat recovery stove as described in claim 2, characterized in that: The water vapor conversion point is located at a horizontal distance close to or on the burner.

4. A waste heat recovery stove as described in claim 1, characterized in that: The surrounding section includes a first segment and a second segment. The first segment is connected to the contact segment and the second segment at both ends, respectively. The second segment is located above the first segment and spirals around in a gradually expanding manner toward the bottom of the stove body and the burner.

5. A waste heat recovery stove as described in claim 4, characterized in that: The number of heat-conducting pipes is multiple. The heat-conducting pipes are arranged side by side and attached to each other in the contact section and the first segment. In the second segment, the heat-conducting pipes separate from each other in the direction away from the bottom of the stove body and the burner.

6. A waste heat recovery stove as described in claim 5, characterized in that: The multiple heat-conducting pipes gradually converge and extend out at the top of the second section.

7. A waste heat recovery stove as described in claim 4, characterized in that: The first segment is in contact with the side wall of the combustion channel within the combustion channel; the first segment is spaced around the periphery of the burner, and the inner diameter of the smallest position of the first segment is greater than the outer diameter of the largest position of the burner.

8. A waste heat recovery stove as described in claim 1, characterized in that: The contact section is adapted to spirally encircle the side and bottom of the stove body in sequence to the combustion channel, and the encircling section is adapted to spirally encircle the burner in the combustion channel; the two adjacent spiral winding structures of the contact section are close to each other in contact.

9. A waste heat recovery stove as described in claim 1, characterized in that: A viewing opening is provided on the lower part of one side of the main body of the stove; a smoke exhaust port is provided on the upper part of one side of the main body of the stove.

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