Sandwich furnace heat energy recovery and heat preservation equipment

By designing a heat recovery and insulation device for sandwich ovens, the heat from sandwich ovens is recovered and reused using heat-conducting fins and a water pipe system, solving the problem of energy waste in traditional sandwich ovens and achieving efficient utilization of heat energy and cost reduction.

CN224230817UActive Publication Date: 2026-05-12NINGBO QISHANG ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO QISHANG ELECTRIC CO LTD
Filing Date
2025-05-30
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Traditional sandwich ovens waste energy during operation, as heat is dissipated into the surrounding environment through the oven surface, resulting in high energy consumption.

Method used

设计一种三明治炉热能回收保温设备,利用导热鳍片和连接板将热量回收至箱体内,并通过水管进行热交换,实现热能的回收和再利用。

Benefits of technology

有效回收三明治炉产生的热量,减少能源消耗,提高能源利用率,降低设备运行成本,并通过热交换器升高水温供使用。

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of heat energy recovery and heat preservation, and particularly relates to sandwich furnace heat energy recovery and heat preservation equipment which comprises a box body. A sealing cover is arranged at the top of the box body; heat conduction fins are arranged in the box body; the heat conduction fins are arranged at the bottom of the sealing cover and symmetrically arranged in the sealing cover. The end parts of the heat-conducting fins are fixedly connected with a heat-conducting plate; the heat conduction plate is arranged on the side wall of the box body; the end part of the other heat conduction fin is fixedly connected with a heat conduction plate; the outlet heat conduction plate is arranged at the symmetrical plane position of the inlet heat conduction plate; the end parts of the inlet heat-conducting plate and the outlet heat-conducting plate are fixedly connected with a connecting plate; a fixing bolt is arranged in a through hole formed in the side wall of the connecting plate; by means of the structure, heat generated by the sandwich furnace can be effectively recycled and used for preheating, and therefore energy consumption is reduced, the energy utilization rate is increased, and the equipment operation cost is reduced.
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Description

Technical Field

[0001] This utility model belongs to the field of heat energy recovery and insulation technology, specifically a heat energy recovery and insulation device for a sandwich oven. Background Technology

[0002] Sandwich ovens are widely used in the catering industry and home kitchens as food processing equipment. They use heating elements to toast sandwiches to achieve the desired texture and flavor.

[0003] Traditional sandwich ovens waste a lot of energy during operation. In addition to heating the sandwiches, a significant portion of the heat generated by the heating element is dissipated into the surrounding environment through the oven surface.

[0004] With the increasing prominence of global energy issues and the continuous improvement of people's environmental awareness, all sectors are seeking methods and technologies for energy conservation and emission reduction.

[0005] Therefore, this utility model provides a sandwich oven heat recovery and insulation device. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology and solve at least one of the problems mentioned in the background technology, a sandwich oven heat recovery and insulation device is proposed.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A sandwich oven heat recovery and insulation device of this utility model includes a housing; a sealing cover is provided on the top of the housing; heat-conducting fins are provided inside the housing; the heat-conducting fins are located at the bottom of the sealing cover and are symmetrically arranged inside the sealing cover; an inlet heat-conducting plate is fixedly connected to the end of each heat-conducting fin; the inlet heat-conducting plate is located on the side wall of the housing; an outlet heat-conducting plate is fixedly connected to the end of another heat-conducting fin; the outlet heat-conducting plate is located on the symmetrical plane of the inlet heat-conducting plate; a connecting plate is fixedly connected to the ends of the inlet and outlet heat-conducting plates; a fixing bolt is provided inside a through hole opened on the side wall of the connecting plate; this device can effectively recover the heat generated by the sandwich oven and use it for preheating, thereby reducing energy consumption, improving energy utilization, and reducing equipment operating costs.

[0008] Preferably, a water inlet pipe is fixedly connected to the top of the sealing cover; the water inlet pipe is located inside the housing; a water outlet pipe is fixedly connected to the top of the sealing cover; the water outlet pipe is located on the symmetrical side of the water inlet pipe; and connecting blocks are fixedly connected to the ends of the water inlet pipe and the water outlet pipe. This allows for effective heat exchange between the low-temperature water and the high-temperature water discharged from the sandwich oven in the heat exchanger, absorbing heat and thus achieving heat energy recovery. After heat exchange, the water temperature rises, and the water outlet pipe transports the hot water from the heat exchanger to a storage device or other places where hot water is needed for use.

[0009] Preferably, a protrusion is fixed to the top of the housing; a sealing groove is provided at the bottom of the sealing cover; the protrusion is embedded inside the sealing groove; after the protrusion is embedded in the sealing groove, a tight fit can be formed to prevent leakage of air, water or other media, and to prevent heat loss during the heat exchange process, thereby improving the heat recovery efficiency.

[0010] Preferably, filters are installed at the ends of the inlet and outlet pipes; the filters are located on one side of the heat-conducting plate and inside the housing; they can effectively intercept and filter impurities in the water, helping to ensure the cleanliness of the water during the heat exchange process, avoiding the impact of impurities on the heat exchange surface on the heat transfer effect, and ensuring the efficient operation of the heat recovery system.

[0011] Preferably, the interior of the casing is provided with an insulation layer; the insulation layer is arranged in a surrounding manner inside the casing; it can effectively prevent the heat inside the sandwich oven from dissipating to the external environment, reduce heat loss, keep the oven temperature stable, improve thermal energy utilization efficiency, and save energy consumption.

[0012] Preferably, the heat-conducting fins have heat-conducting holes on their sidewalls; the heat-conducting holes are arranged in a linear array on the sidewalls of the heat-conducting fins; this can effectively increase the contact area between the heat-conducting fins and the heat medium, so that heat can be transferred from the heat source to the fins more quickly and efficiently, thereby improving the heat dissipation efficiency of the fins and accelerating the heat recovery speed.

[0013] Preferably, the sidewall of the connecting plate is provided with a tight-fitting pattern; the tight-fitting pattern is provided on the sidewall of multiple connecting plates and arranged in a linear array; this can effectively increase the contact area and friction between the connecting plate and other components, making the connection tighter, reducing the possibility of heat loss through the connection gap, and helping to improve the thermal insulation performance of the equipment.

[0014] Preferably, the heat-conducting fins, the inlet heat-conducting plate, and the outlet heat-conducting plate are made of metallic silver; this effectively provides extremely high thermal conductivity, enabling rapid heat conduction and facilitating quick heat recovery.

[0015] Compared with the prior art, this utility model provides a sandwich oven heat recovery and insulation device, which has the following beneficial effects:

[0016] 1. The sandwich oven heat recovery and insulation device of this utility model connects the sandwich oven to the connecting plate by fixing bolts, so that the heat inlet plate reaches the heat inlet fins and then into the interior of the box. The heat outlet plate allows the heat inside to be fixed to other components through the connecting plate on the other side for heat recovery. This can effectively recover the heat generated by the sandwich oven and use it for preheating, thereby reducing energy consumption, improving energy utilization, and reducing equipment operating costs.

[0017] 2. The sandwich oven heat recovery and insulation device of this utility model allows water to enter the box through the inlet pipe, where the heat-conducting fins can be heated. The heated water can be discharged through the outlet pipe, which allows for better utilization of heat. In the heat exchanger, the low-temperature water exchanges heat with the high-temperature water discharged from the sandwich oven, absorbing heat and thus realizing heat recovery. After the heat exchange, the water temperature rises, and the outlet pipe transports the hot water from the heat exchanger to a storage device or other places where hot water is needed for use. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the box in this utility model;

[0020] Figure 3 This is a schematic diagram of the heat-conducting fins in this utility model;

[0021] Figure 4 This is a schematic diagram of the sealing cap structure in this utility model.

[0022] In the diagram: 11. Housing; 12. Sealing cover; 13. Heat-conducting fins; 14. Inlet heat-conducting plate; 15. Outlet heat-conducting plate; 16. Connecting plate; 17. Fixing bolts; 21. Water inlet pipe; 22. Water outlet pipe; 23. Connecting block; 31. Protrusion; 32. Sealing groove; 41. Filter; 51. Insulation layer; 61. Heat-conducting hole; 71. Tight-fitting texture. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 4As shown, a sandwich oven heat recovery and insulation device according to an embodiment of the present invention includes a housing 11; a sealing cover 12 is provided on the top of the housing 11; heat-conducting fins 13 are provided inside the housing 11; the heat-conducting fins 13 are located at the bottom of the sealing cover 12 and are symmetrically arranged inside the sealing cover 12; an inlet heat-conducting plate 14 is fixedly connected to the end of the heat-conducting fin 13; the inlet heat-conducting plate 14 is located on the side wall of the housing 11; an outlet heat-conducting plate 15 is fixedly connected to the end of another heat-conducting fin 13; the outlet heat-conducting plate 15 is located on the symmetrical plane of the inlet heat-conducting plate 14; a connecting plate 16 is fixedly connected to the ends of the inlet heat-conducting plate 14 and the outlet heat-conducting plate 15; a through hole is provided inside the connecting plate 16. The sandwich oven has fixing bolts 17. During operation, when performing heat recovery processing, the connecting plate 16 can be fixed to the sandwich oven using the fixing bolts 17. The generated heat is conducted to the inside of the housing 11 through the heat-conducting plate 14. Multiple heat-conducting fins 13 are provided inside the housing 11 to better recover and retain heat. The heat can then be discharged through the heat-conducting plate 15. The connecting plate 16 is then fixed to a specific device using the fixing bolts 17, allowing for the recovery and reuse of heat energy. Through the above structure, the heat generated by the sandwich oven can be effectively recovered and used for preheating, thereby reducing energy consumption, improving energy utilization, and reducing equipment operating costs.

[0026] like Figure 1 and Figure 4 As shown, a water inlet pipe 21 is fixedly connected to the top of the sealing cover 12; the water inlet pipe 21 is located inside the housing 11; a water outlet pipe 22 is fixedly connected to the top of the sealing cover 12; the water outlet pipe 22 is located on the symmetrical side of the water inlet pipe 21; a connecting block 23 is fixedly connected to the ends of the water inlet pipe 21 and the water outlet pipe 22; during operation, water can be introduced into the housing 11 through the water inlet pipe 21, and the heat generated by the sandwich oven can heat the water, which is then discharged through the water outlet pipe 22, allowing the heated water to be used for other purposes; through the above structure, the low-temperature water can effectively exchange heat with the high-temperature water discharged from the sandwich oven in the heat exchanger, absorbing heat and thus realizing heat energy recovery, and after heat exchange, the water temperature rises, and the water outlet pipe 22 transports the hot water from the heat exchanger to the storage device or other places where hot water is needed for use.

[0027] like Figure 2 and Figure 4As shown, a protrusion 31 is fixed to the top of the housing 11; a sealing groove 32 is provided at the bottom of the sealing cover 12; the protrusion 31 is embedded inside the sealing groove 32; during operation, the cooperation between the protrusion 31 and the sealing groove 32 can make the housing 11 and the sealing cover 12 more secure, preventing internal heat from overflowing, and the height of the protrusion 31 can prevent internal water from flowing out; through the above structure, the protrusion 31 can be effectively embedded in the sealing groove 32 to form a tight fit, preventing the leakage of air, water or other media, and preventing heat loss during the heat exchange process, thereby improving the heat recovery efficiency.

[0028] like Figure 4 As shown, filters 41 are installed at the ends of the inlet pipe 21 and the outlet pipe 22. The filter 41 is located on one side of the heat-conducting plate 15 and inside the housing 11. During operation, when water is discharged through the inlet pipe 21 and the outlet pipe 22, it can be filtered by the filter 41 to prevent impurities in the water from damaging other components. Through the above structure, impurities in the water can be effectively intercepted and filtered, which helps to ensure the cleanliness of the water during the heat exchange process, avoids the effect of heat transfer due to the deposition of impurities on the heat exchange surface, and ensures the efficient operation of the heat recovery system.

[0029] like Figure 2 As shown, the interior of the housing 11 is provided with an insulation layer 51; the insulation layer 51 is arranged in a surrounding manner inside the housing 11; during operation, the insulation layer 51 can better retain the heat energy inside the housing 11, and the insulation layer 51 can also prevent external cold air from cooling the internal heat; through the above structure, the heat inside the sandwich oven can be effectively prevented from dissipating to the external environment, reducing heat loss, keeping the oven temperature stable, improving heat utilization efficiency, and saving energy consumption.

[0030] like Figure 3 As shown, heat-conducting fins 13 have heat-conducting holes 61 on their sidewalls. The heat-conducting holes 61 are arranged in a linear array on the sidewalls of the heat-conducting fins 13. During operation, the heat-conducting fins 13 can be better heat-conducted through the heat-conducting holes 61, so that heat energy can be better preserved and conducted. Through the above structure, the contact area between the heat-conducting fins 13 and the heat medium can be effectively increased, so that heat can be transferred from the heat source to the fins more quickly and efficiently, thereby improving the heat dissipation efficiency of the fins and accelerating the heat recovery speed.

[0031] like Figures 1 to 3As shown, the sidewall of the connecting plate 16 is provided with a tight-fitting pattern 71; the tight-fitting pattern 71 is located on the sidewall of multiple connecting plates 16 and is arranged in a linear array; during operation, the tight-fitting pattern 71 allows for better heat conduction and contact when the connecting plate 16 is connected to the sandwich oven; through the above structure, the contact area and friction between the connecting plate 16 and other components can be effectively increased, making the connection tighter, reducing the possibility of heat loss through the connection gaps, and helping to improve the heat preservation performance of the equipment.

[0032] like Figures 1 to 4 As shown, the heat-conducting fins 13, the inlet heat-conducting plate 14, and the outlet heat-conducting plate 15 are made of metallic silver. During operation, the heat-conducting fins 13, the inlet heat-conducting plate 14, and the outlet heat-conducting plate 15 enable faster heat conduction during heat recovery, resulting in more stable heat recovery and insulation. Through the above structure, it can effectively achieve extremely high thermal conductivity, quickly conduct heat, and enable rapid heat conduction during heat recovery.

[0033] During operation, when performing heat recovery processing of the sandwich oven, the connecting plate 16 can be fixed to the sandwich oven using fixing bolts 17. The generated heat is conducted to the interior of the housing 11 through the inlet heat conduction plate 14. Multiple heat conduction fins 13 are provided inside the housing 11 to improve heat recovery and insulation. The heat can then be discharged through the outlet heat conduction plate 15. The connecting plate 16 is then fixed to a specific device using fixing bolts 17, enabling the recovery and reuse of heat energy. Water can be introduced into the housing 11 through the inlet pipe 21, and the heat generated by the sandwich oven can heat the water. The water is then discharged through the outlet pipe 22 for further use. The engagement of the protrusion 31 and the sealing groove 32 allows for proper sealing between the housing 11 and the sealing cover 12. It is more robust, preventing internal heat from overflowing, and the height of the protrusion 31 can prevent internal water from flowing out; when water is discharged through the inlet pipe 21 and the outlet pipe 22, it can be filtered by the filter 41 to prevent impurities in the water from damaging other components; the insulation layer 51 can better retain the heat energy inside the box 11, and the insulation layer 51 can also prevent external cold air from cooling the internal heat; the heat conduction holes 61 can make the heat conduction fins 13 better conduct heat, so that the heat energy is better preserved and conducted; the dense texture 71 can make the heat conduction and contact better when the connecting plate 16 is connected to the sandwich oven; the heat conduction fins 13, the inlet heat conduction plate 14 and the outlet heat conduction plate 15 can make the heat energy recovery faster and make the recovery and heat preservation more stable.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sandwich oven heat recovery and insulation device, comprising a housing (11); characterized in that: The top of the housing (11) is provided with a sealing cover (12); the interior of the housing (11) is provided with heat-conducting fins (13); the heat-conducting fins (13) are located at the bottom of the sealing cover (12) and are arranged symmetrically inside the sealing cover (12); the ends of the heat-conducting fins (13) are fixedly connected to an inlet heat-conducting plate (14); the inlet heat-conducting plate (14) is located on the side wall of the housing (11); the end of one of the heat-conducting fins (13) is fixedly connected to an outlet heat-conducting plate (15); the outlet heat-conducting plate (15) is located on the symmetrical plane of the inlet heat-conducting plate (14); the ends of the inlet heat-conducting plate (14) and the outlet heat-conducting plate (15) are fixedly connected to a connecting plate (16); a fixing bolt (17) is provided inside the through hole opened on the side wall of the connecting plate (16).

2. The sandwich oven heat recovery and insulation equipment according to claim 1, characterized in that: The top of the sealing cover (12) is fixedly connected to a water inlet pipe (21); the water inlet pipe (21) is located inside the box (11); the top of the sealing cover (12) is fixedly connected to a water outlet pipe (22); the water outlet pipe (22) is located on the symmetrical side of the water inlet pipe (21); the ends of the water inlet pipe (21) and the water outlet pipe (22) are fixedly connected to a connecting block (23).

3. The sandwich oven heat recovery and insulation equipment according to claim 2, characterized in that: The top of the box (11) is fixed with a protrusion (31); the bottom of the sealing cover (12) is provided with a sealing groove (32); the protrusion (31) is embedded in the sealing groove (32).

4. The sandwich oven heat recovery and insulation equipment according to claim 3, characterized in that: The inlet pipe (21) and outlet pipe (22) are equipped with filters (41); the filters (41) are located on one side of the heat-conducting plate (15) and inside the housing (11).

5. The sandwich oven heat recovery and insulation equipment according to claim 4, characterized in that: The box (11) is provided with an insulation layer (51) inside; the insulation layer (51) is provided in a surrounding manner inside the box (11).

6. The sandwich oven heat recovery and insulation device according to claim 5, characterized in that: The heat-conducting fins (13) have heat-conducting holes (61) on their sidewalls; the heat-conducting holes (61) are arranged in a linear array on the sidewalls of the heat-conducting fins (13).

7. The sandwich oven heat recovery and insulation device according to claim 6, characterized in that: The connecting plate (16) has closely spaced textures (71) on its sidewalls; the closely spaced textures (71) are located on the sidewalls of multiple connecting plates (16) and are arranged in a linear array.

8. The sandwich oven heat recovery and insulation device according to claim 7, characterized in that: The heat-conducting fins (13), the inlet heat-conducting plate (14), and the outlet heat-conducting plate (15) are made of metallic silver.