Energy-saving barbecue oven using waste heat thawing

Abstract

The utility model relates to barbecue stove technical field discloses a kind of energy-saving barbecue oven thawing by utilizing waste heat, including frame body and the electric heating mechanism being set on frame body, electric heating mechanism includes the electric heating wire for heating and baking food material, frame body is provided with the heat preservation cover that can carry out heat conduction, heat preservation cover is located above electric heating wire, heat preservation cover is placed with the thawing tray that can heat conduction;After a round of barbecue ends, electric heating wire is powered off, the food material to be thawed in next round is placed on thawing tray, waste heat of electric heating wire is transferred to heat preservation cover, heat on heat preservation cover is transferred to thawing tray, to thaw food material on thawing tray. The utility model relates to energy-saving barbecue oven thawing by utilizing waste heat, can utilize the waste heat after electric heating wire power off, thaw next round barbecue food material, compared with natural thawing speed faster, energy utilization rate is high, improve economy and energy saving.

Description

Technical Field

[0001] This utility model relates to the field of barbecue oven technology, and more specifically, to an energy-saving barbecue oven that utilizes waste heat for defrosting. Background Technology

[0002] As people's living standards improve, their diets become more diverse, with barbecue becoming increasingly popular. However, barbecue is a rather tedious process. During the barbecue, the chef needs to manually flip the skewers while constantly monitoring their doneness to prevent uneven heating or burning on one side. Barbecue chefs have limited energy. To improve the quality of barbecue, some automatic barbecue grills have emerged on the market to assist in the barbecue process.

[0003] Some existing barbecue grills, including the frame and the electric heating mechanism mounted on the frame, require the next batch of food to be grilled after the previous batch is finished. This next batch of food (such as meat) generally needs to be thawed before grilling, usually through natural thawing or a dedicated thawing machine (such as a microwave). To avoid wasting energy during the thawing process, the electric heating mechanism needs to be turned off, and then turned back on for grilling once thawing is complete. Natural thawing is slow, affecting the progress of the next batch of grilling; using a dedicated thawing machine is costly and requires additional energy, resulting in poor economy and energy efficiency. Utility Model Content

[0004] To address at least one of the aforementioned problems, this invention provides an energy-saving barbecue grill utilizing waste heat for defrosting. The grill includes a frame and an electric heating mechanism mounted on the frame. The electric heating mechanism includes an electric heating wire for heating and grilling food. A heat-conducting insulation cover is mounted on the frame, positioned above the electric heating wire. A heat-conducting defrosting tray is placed on the insulation cover. After one round of grilling, the electric heating wire is de-energized, and the next batch of food to be defrosted is placed on the defrosting tray. The residual heat from the electric heating wire is transferred to the insulation cover, and the heat from the insulation cover is transferred to the defrosting tray to defrost the food. This energy-saving barbecue grill utilizing waste heat for defrosting can utilize the residual heat after the electric heating wire is de-energized to defrost the next batch of food, resulting in faster defrosting speed, higher energy efficiency, and improved economy and energy saving compared to natural defrosting.

[0005] Optionally, the inner bottom of the defrosting tray is provided with multiple protrusions.

[0006] Optionally, the protrusion is a strip-shaped protrusion that extends along a first direction, and a plurality of the protrusions are distributed along a second direction, wherein the first direction and the second direction are perpendicular to each other.

[0007] Optionally, the upper part of the defrosting tray is provided with a flange in annular shape.

[0008] Optionally, the flange is provided with a hanging hole.

[0009] Optionally, the frame is provided with a placement frame, the heat insulation cover is placed on the upper side of the placement frame, the inner side of the placement frame is provided with a through groove, the electric heating wire is placed below the through groove, the heat insulation cover is provided with an inner cavity, the upper side of the placement frame is provided with an annular first placement surface, and the lower side of the heat insulation cover is provided with an annular abutting surface corresponding to the first placement surface; during thawing, the abutting surfaces abut against the first placement surface, the air heated by the residual heat of the electric heating wire rises, the heated air flows upward through the through groove and gathers in the inner cavity, thereby raising the temperature of the heat insulation cover.

[0010] Optionally, a handle is provided on the upper side of the heat preservation cover, and both the heat preservation cover and the defrosting tray are made of metal.

[0011] Optionally, the upper side of the heat preservation cover is provided with a second placement surface and a third placement surface, which are respectively located on both sides of the handle. The defrosting tray includes a first defrosting tray and a second defrosting tray. During defrosting, the first defrosting tray is placed on the second placement surface for defrosting, and the second placement surface is placed on the third placement surface for defrosting.

[0012] Optionally, the handle is inverted U-shaped, the upper side of the heat preservation cover is provided with a fourth placement surface, a clearance groove is formed between the handle and the fourth placement surface, and the defrosting tray also includes a third defrosting tray that can be accommodated in the clearance groove; during defrosting, the third defrosting tray is placed on the fourth placement surface for defrosting.

[0013] Optionally, the electric heating mechanism further includes a chain and a motor for driving the chain. The upper side of the chain drives in a horizontal or near-horizontal direction. The electric heating wire includes a first electric heating wire disposed on the upper side of the chain and a second electric heating wire disposed on the lower side of the chain. Both the first and second electric heating wires are electric heating nickel wires. The first electric heating wire is located directly above or nearly directly above the second electric heating wire. The upper side of the chain is provided with a feeding area and a discharging area. In use, the thawed food is placed in the feeding area. The motor drives the chain to move, so that the chain moves the food in the feeding area to between the first and second electric heating wires for heating and baking. The motor continues to drive the chain to move, so that the chain carries the baked food to the discharging area for manual removal.

[0014] Compared to existing technologies, the energy-saving barbecue grill utilizing waste heat for defrosting in this invention can use the residual heat after the electric heating wire is turned off to defrost the next batch of food for grilling. This is faster than natural defrosting, has higher energy efficiency, and improves economy and energy saving. The inner bottom of the defrosting tray has multiple protrusions to prevent uneven heating of the food, which can lead to burning or food sticking to the bottom and being difficult to separate, thus improving the quality of the defrosted food. By increasing the number and area of ​​the protrusions, large-area contact between the food and the inner bottom of the defrosting tray is avoided, thereby... To avoid problems such as food sticking to the bottom and being difficult to separate, the defrosting tray has a flange on the upper ring, allowing you to hold the tray by hand. The flange also has hanging holes for easy storage; specifically, the defrosting tray can be hung on an external hook. During defrosting, the first defrosting tray is placed on the second surface, and the second surface is placed on the third surface, allowing for simultaneous defrosting of food on both trays, increasing the amount of food that can be defrosted and improving the utilization rate of residual heat. Attached Figure Description

[0015] Figure 1 This is a perspective view of the energy-saving barbecue grill that utilizes waste heat for defrosting according to this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0017] Figure 3 This is a schematic diagram of the defrosting tray of the energy-saving barbecue oven that utilizes waste heat for defrosting according to this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the energy-saving barbecue oven that utilizes waste heat for defrosting during the barbecue process according to this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of section B;

[0020] Figure 6 This is a cross-sectional view of the energy-saving barbecue grill that utilizes waste heat for defrosting according to this utility model;

[0021] Figure 7 for Figure 6 Enlarged view of section C;

[0022] Figure 8 This is a schematic diagram of the structure of the frame of the energy-saving barbecue grill that utilizes waste heat for defrosting according to this utility model.

[0023] Figure 9 This is a schematic diagram of the structure of the energy-saving barbecue oven heat preservation cover that utilizes waste heat for defrosting according to this utility model;

[0024] The component names corresponding to the various labels in the figure are as follows: 1 is the frame, 102 is the speed control switch, 103 is the adjustment knob, 2 is the food, 21 is the skewer, 3 is the electric heating wire, 31 is the first electric heating wire, 32 is the second electric heating wire, 4 is the heat preservation cover, 401 is the inner cavity, 402 is the contact surface, 403 is the handle, 404 is the second placement surface, 405 is the third placement surface, 406 is the fourth placement surface, 407 is the clearance groove, 5 is the defrosting tray, 51 is the first defrosting tray, 52 is the second defrosting tray, 53 is the third defrosting tray, 501 is the protrusion, 502 is the flange, 503 is the hanging hole, 6 is the placement frame, 601 is the through groove, 602 is the first placement surface, 71 is the chain, 711 is the feeding area, 712 is the unloading area, and 72 is the motor. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0028] See Figures 1-9 This utility model provides an energy-saving barbecue grill that utilizes waste heat for defrosting. It includes a frame 1 and an electric heating mechanism mounted on the frame 1. The electric heating mechanism includes an electric heating wire 3 for heating and grilling defrosted food 2. A heat-conducting insulation cover 4 is mounted on the frame 1, positioned above the electric heating wire 3. The electric heating wire 3 heats the air it comes into contact with using waste heat. According to the principle of hot air rising, this heated air rises into the insulation cover 4, thus concentrating the heat on the insulation cover 4. A heat-conducting defrosting tray 5 is placed on top of the grill. After one round of grilling, the electric heating wire 3 is turned off, and the next batch of food to be defrosted 2 is placed on the defrosting tray 5. The residual heat of the electric heating wire 3 is transferred to the heat preservation cover 4, and the heat on the heat preservation cover 4 is transferred to the defrosting tray 5 to defrost the food 2 on the defrosting tray 5. This utility model is an energy-saving grill that uses residual heat for defrosting. It can use the residual heat after the electric heating wire is turned off to defrost the next batch of grilled food. Compared with natural defrosting, it is faster, has higher energy utilization, and improves economy and energy saving.

[0029] See Figures 1-3The inner bottom of the defrosting tray 5 is provided with multiple protrusions 501 to prevent uneven heating of the food to be defrosted in the defrosting tray 5, which could cause the food to burn or stick to the bottom and be difficult to separate, thus improving the quality of the defrosted food. The protrusions 501 are strip-shaped protrusions that extend along a first direction and are distributed along a second direction. The first and second directions are perpendicular to each other. By increasing the number and area of ​​the protrusions 501, large-area contact between the food to be defrosted and the inner bottom of the defrosting tray 5 can be avoided, thus preventing problems such as burning or sticking. The upper part of the defrosting tray 5 is provided with a flange 502, which can be held by hand to pick up the defrosting tray 5. The flange 502 is provided with a hanging hole 503 for easy storage of the defrosting tray 5. Specifically, the defrosting tray 5 can be hung on an external hook through the hanging hole 503 for storage.

[0030] See Figure 1 , Figure 6 , Figure 7 and Figure 8 The frame 1 is provided with a placement frame 6, and the heat preservation cover 4 is placed on the upper side of the placement frame 6. The inner side of the placement frame 6 is provided with a through groove 601, and the electric heating wire 3 is placed below the through groove 601. The heat preservation cover 4 is provided with an inner cavity 401. The upper side of the placement frame 6 is provided with an annular first placement surface 602, and the lower side of the heat preservation cover 4 is provided with an annular contact surface 402 that corresponds to and abuts against the first placement surface 602. During defrosting, the contact surface 402 abuts against the first placement surface 602. The air heated by the residual heat of the electric heating wire 3 rises and flows upward through the through groove 601 and gathers in the inner cavity 401, thereby raising the temperature of the heat preservation cover 4 and transferring the heat of the heat preservation cover 4 to the defrosting tray to defrost the food to be defrosted on the defrosting tray. The defrosting efficiency is high.

[0031] See Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 The heat preservation cover 4 has a handle 403 on its upper side for easy access by the barbecue personnel. Both the heat preservation cover 4 and the defrosting tray 5 are made of metal with high thermal conductivity, so that heat can be transferred to the food to be defrosted. Specifically, the heat preservation cover 4 and the defrosting tray 5 are made of stainless steel. The heat preservation cover 4 has a second placement surface 404 and a third placement surface 405 on its upper side, which are respectively located on both sides of the handle 403. The defrosting tray 5 includes a first defrosting tray 51 and a second defrosting tray 52. ​​During defrosting, the first defrosting tray 51 is placed on the second placement surface 404 for defrosting, and the second placement surface 404 is placed on the third placement surface 405 for defrosting. This allows the food to be defrosted on the first defrosting tray 51 and the second defrosting tray 52 to be defrosted simultaneously, increasing the amount of food that can be defrosted and improving the utilization rate of residual heat.

[0032] See Figures 6-8 The handle 403 is inverted U-shaped, and a fourth placement surface 406 is provided on the upper side of the heat preservation cover 4. A clearance groove 407 is formed between the handle 403 and the fourth placement surface 406. The defrosting tray 5 also includes a third defrosting tray 53 that can be accommodated in the clearance groove 407. During defrosting, the third defrosting tray 53 is placed on the fourth placement surface 406 for defrosting. Specifically, the length of the handle 403 is greater than the length of the defrosting tray 5, and the height of the handle 403 is greater than the height of the defrosting tray 5 (when it contains food to be defrosted), so that the third defrosting tray 53 can be smoothly placed on the fourth placement surface 406 for defrosting, further increasing the amount of food that can be defrosted and improving the utilization of residual heat.

[0033] See Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The electric heating mechanism also includes a chain 71 and a motor 72 for driving the chain 71. The upper side of the chain 71 is driven in a horizontal or near-horizontal direction. The electric heating wire 3 includes a first electric heating wire 31 disposed on the upper side of the chain 71 and a second electric heating wire 32 disposed on the lower side of the chain 71. Both the first electric heating wire 31 and the second electric heating wire 32 are nickel electric heating wires. Nickel heating wires can generate higher heat at lower voltages, improving grilling efficiency. The principle is as follows: the resistivity of nickel (approximately 6.9 × 10⁻⁶) The resistivity (Ω·m) is much higher than that of highly conductive materials such as copper or aluminum, but lower than that of some high-resistivity alloys (such as nickel-chromium alloys). This moderate resistivity allows the nickel wire to provide sufficient resistance even with a short length or a large cross-sectional area, thereby generating enough heat at low voltage. The aforementioned low-voltage heating power supply method is safer to use. The first heating wire 31 is located directly above or nearly directly above the second heating wire 32. The upper side of the chain 71 is provided with a loading area 711 and a unloading area 712. In use, the thawed food 2 is placed in the loading area 711. The motor 72 drives the chain 71 to move the food 2 in the loading area 711 to the space between the first heating wire 31 and the second heating wire 32 for heating and grilling. The motor 72 continues to drive the chain 71 to move the grilled food 2 to the unloading area 712 for manual removal. There is no need to manually flip the food 2 during grilling, making it convenient to use and improving grilling efficiency.

[0034] Specifically, the food 2 is a skewer with skewers 21. Two chains 71 are symmetrically arranged and operate synchronously. One end of the skewer 21 is placed on one chain 71, and the other end is placed on the other chain 71. The motor 72 can be a speed-regulating motor, and its speed can be adjusted by the speed control switch 102 on the frame 1 to adjust the corresponding transmission speed according to different skewers. The speed control switch 102 can be a rotary switch. Specifically, if the skewers are ingredients that are not easy to cook through, the speed can be slowed down appropriately. The motor 72 is used to increase the heating and grilling time of the first heating wire 31 and the second heating wire 32 on the skewers; conversely, if the skewers are easy to grill, the motor 72 is adjusted to shorten the heating and grilling time of the first heating wire 31 and the second heating wire 32 on the skewers. In addition, an adjustment knob 103 can be provided on the frame 1 to adjust the heating power of the first heating wire 31 and the second heating wire 32 to adjust the heating temperature. The adjustment knob 103 can be set as a slider or a knob. In this embodiment, it is set as a slider.

[0035] This utility model discloses an energy-saving barbecue grill that utilizes residual heat for defrosting. It uses the residual heat after the electric heating wire is turned off to defrost the next batch of food, resulting in faster defrosting and higher energy efficiency compared to natural defrosting, thus improving economy and energy saving. The defrosting tray has multiple raised sections on its inner bottom to prevent uneven heating of the food, which can lead to burning or food sticking to the bottom and being difficult to separate, thus improving the quality of the defrosted food. By increasing the number and area of ​​the raised sections, large-area contact between the food and the inner bottom of the defrosting tray is avoided, further preventing burning. This design addresses issues such as food sticking to the bottom and being difficult to separate. The upper part of the defrosting tray has a ring-shaped flange for easy handling. Hanging holes on the flange facilitate storage of the defrosting tray, allowing it to be hung on external hooks. During defrosting, the first defrosting tray is placed on the second surface, and the second surface is placed on the third surface, allowing for simultaneous defrosting of food on both trays, increasing the amount of food that can be defrosted and improving the utilization rate of residual heat.

[0036] In the description of this disclosure, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure 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, and therefore should not be construed as a limitation of this disclosure.

[0037] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0039] In this disclosure, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first feature or in indirect contact with the first feature through an intermediate medium.

[0040] It should be noted that when a component is described as being "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is described as being "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An energy-saving barbecue grill that utilizes waste heat for defrosting, characterized in that, The device includes a frame (1) and an electric heating mechanism mounted on the frame (1). The electric heating mechanism includes an electric heating wire (3) for heating and grilling food (2). A heat-conducting heat insulation cover (4) is mounted on the frame (1). The heat insulation cover (4) is located above the electric heating wire (3). A heat-conducting defrosting tray (5) is placed on the heat insulation cover (4). After one round of grilling is completed, the electric heating wire (3) is turned off, and the next round of food (2) to be defrosted is placed on the defrosting tray (5). The residual heat of the electric heating wire (3) is transferred to the heat insulation cover (4), and the heat on the heat insulation cover (4) is transferred to the defrosting tray (5) to defrost the food (2) on the defrosting tray (5).

2. The energy-saving barbecue grill utilizing waste heat for defrosting according to claim 1, characterized in that, The inner bottom of the defrosting tray (5) is provided with multiple protrusions (501).

3. The energy-saving barbecue grill utilizing waste heat for defrosting according to claim 2, characterized in that, The protrusion (501) is a strip-shaped protrusion, the protrusion (501) extends along a first direction, and a plurality of the protrusions (501) are distributed along a second direction, the first direction and the second direction being perpendicular to each other.

4. The energy-saving barbecue grill utilizing waste heat for defrosting according to claim 1, characterized in that, The upper part of the defrosting tray (5) is provided with a flange (502).

5. The energy-saving barbecue grill utilizing waste heat for defrosting according to claim 4, characterized in that, The flange (502) is provided with a hanging hole (503).

6. The energy-saving barbecue grill utilizing waste heat for defrosting according to claim 1, characterized in that, The frame (1) is provided with a placement frame (6), the heat preservation cover (4) is placed on the upper side of the placement frame (6), the inner side of the placement frame (6) is provided with a through groove (601), the electric heating wire (3) is placed below the through groove (601), the heat preservation cover (4) is provided with an inner cavity (401), the upper side of the placement frame (6) is provided with an annular first placement surface (602), and the lower side of the heat preservation cover (4) is provided with an annular contact surface (402) that corresponds to and abuts against the first placement surface (602). When thawing, the contact surface (402) abuts against the first placement surface (602), and the air heated by the residual heat of the electric heating wire (3) rises. The heated air flows upward through the through groove (601) and gathers in the inner cavity (401) so that the temperature of the heat preservation cover (4) rises.

7. The energy-saving barbecue grill utilizing waste heat for defrosting according to claim 1, characterized in that, The heat insulation cover (4) is provided with a handle (403) on the upper side. Both the heat insulation cover (4) and the defrosting tray (5) are made of metal.

8. The energy-saving barbecue grill utilizing waste heat for defrosting according to claim 7, characterized in that, The heat preservation cover (4) is provided with a second placement surface (404) and a third placement surface (405) on its upper side. The second placement surface (404) and the third placement surface (405) are respectively located on both sides of the handle (403). The defrosting tray (5) includes a first defrosting tray (51) and a second defrosting tray (52). When defrosting, the first defrosting tray (51) is placed on the second placement surface (404) for defrosting, and the second placement surface (404) is placed on the third placement surface (405) for defrosting.

9. The energy-saving barbecue grill utilizing waste heat for defrosting according to claim 8, characterized in that, The handle (403) is inverted U-shaped, and a fourth placement surface (406) is provided on the upper side of the heat preservation cover (4). A clearance groove (407) is formed between the handle (403) and the fourth placement surface (406). The defrosting tray (5) also includes a third defrosting tray (53) that can be accommodated in the clearance groove (407). During defrosting, the third defrosting tray (53) is placed on the fourth placement surface (406) for defrosting.

10. The energy-saving barbecue grill utilizing waste heat for defrosting according to any one of claims 1-9, characterized in that, The electric heating mechanism further includes a chain (71) and a motor (72) for driving the chain (71) to rotate. The upper side of the chain (71) is driven in a horizontal or near-horizontal direction. The electric heating wire (3) includes a first electric heating wire (31) disposed on the upper side of the chain (71) and a second electric heating wire (32) disposed on the lower side of the chain (71). The first electric heating wire (31) and the second electric heating wire (32) are both electric heating nickel wires. The first electric heating wire (31) is located directly above or nearly directly above the second electric heating wire (32). 1) The upper side is provided with a feeding area (711) and a discharging area (712); when in use, the thawed food (2) is placed in the feeding area (711), and the chain (71) is driven by the motor (72) to rotate, so that the chain (71) moves the food (2) in the feeding area (711) to the space between the first electric heating wire (31) and the second electric heating wire (32) for heating and baking. The motor (72) continues to drive the chain (71) to rotate, so that the chain (71) moves the baked food (2) to the discharging area (712) for manual removal.

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