Efficient double-circulation hot air oven

Abstract

The utility model provides an efficient double-circulation hot air oven which comprises an outer shell, an inner oven body is installed in the outer shell, the inner oven body and a bottom plate of the outer shell are suspended through inner supporting legs, a circulating air back plate is installed on the back face in the inner oven body, and the left end and the right end of the circulating air back plate are each provided with a warped edge protruding inwards. An air return cavity is formed between the circulating air back plate and the left end edge and the right end edge of the inner box body, a back sealing plate is installed on the rear side of the circulating air back plate, a first circulating fan and a second circulating fan are installed on two fan installation bases respectively, and a first annular electric heating pipe is installed on the outer side of an impeller of the first circulating fan; a second annular electric heating pipe is mounted on the outer side of an impeller of the second circulating fan; and a top heating pipe is mounted on the inner side of the top of the box body. The efficient double-circulation hot air oven is simple in structure, and through the structural design of double-machine hot air circulation and the top heating pipe, air distribution can be uniform, heat efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing equipment, and particularly relates to an efficient double-circulation hot air oven. Background Art

[0002] An oven is a device that houses food in a closed space and heats and cooks the food. During cooking with multiple heaters in existing electric ovens, the food is placed in a closed and non-convective space. Although this can maximize the retention of heat and improve heat utilization efficiency, due to the diverse shapes of food, many corners of the food are not fully baked, resulting in over-baking or under-baking in some parts of the baked food. The consequence is uneven baking of the food and loss of its delicious taste. In addition, existing ovens generally do not have a hot air circulation system, which leads to high overall energy consumption and low overall heat efficiency utilization of the oven. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides an efficient double-circulation hot air oven. Through the structural design of double-machine hot air circulation plus a top heating tube, the air distribution can be made uniform, the heat efficiency can be improved, and the energy consumption can be reduced.

[0004] To achieve the above technical solution, the utility model provides an efficient double-circulation hot air oven, which includes an outer shell body. A downward-opening door is arranged on the front side of the outer shell body. An inner box body is installed inside the outer shell body. The inner box body is suspended above the bottom plate of the outer shell body through inner support legs. A circulating air back plate is installed on the back inside the inner box body. Both the left and right ends of the circulating air back plate are provided with inwardly protruding flanges, so that an air return cavity is formed between the circulating air back plate and the left and right end edges of the inner box body. A back sealing plate is installed behind the circulating air back plate. A closed space is formed between the circulating air back plate and the back sealing plate. Two fan mounting seats are installed in parallel and at intervals on the back sealing plate. A first circulating fan and a second circulating fan are respectively installed on the two fan mounting seats, and the two impellers on the first circulating fan and the second circulating fan are respectively located in the closed space formed between the circulating air back plate and the back sealing plate. A first annular electric heating tube is installed outside the impeller of the first circulating fan. A second annular electric heating tube is installed outside the impeller of the second circulating fan. A top heating tube is installed on the inner side of the top of the inner box body. Air distribution holes are provided on the circulating air back plate directly in front of the first circulating fan and the second circulating fan. An air inlet pipe communicating with the outside of the outer shell body is provided on the back sealing plate.

[0005] In the above technical solution, during actual operation, since a sealed space is formed between the circulating air back plate and the back sealing plate, and the impellers of the first circulating air fan and the second circulating air fan are installed in the sealed space, an air inlet pipe communicating with the outside is provided on the back sealing plate, and return air cavities are formed between the left and right ends of the circulating air back plate and the left and right side edges of the inner box body through the provided flanging. Therefore, when the impellers of the first circulating air fan and the second circulating air fan rotate, external air will be sucked into the sealed space through the air inlet pipe, and then after being heated by the first annular electric heating pipe, the second annular electric heating pipe, and the top heating pipe, the heated air will be evenly conveyed into the inner box body through the air distribution holes in front of the impellers of the first circulating air fan and the second circulating air fan to ensure uniform air distribution. At the same time, when the impellers rotate, part of the hot air in the inner box body will be sucked back into the sealed space through the return air cavities at the left and right ends of the circulating air back plate by the first circulating air fan and the second circulating air fan, and after being reheated by the first annular electric heating pipe and the second annular electric heating pipe, it will be evenly conveyed into the inner box body again through the air distribution holes, thereby realizing the circulation of hot air to improve the hot air efficiency and reduce energy consumption.

[0006] Preferably, the outer shell includes a frame body, and a left side plate, a top plate, a rear back plate, a right side plate, and a bottom plate are respectively installed on the frame body. Heat dissipation holes are provided on the rear back plate, the left side plate, the right side plate, and the bottom plate, which not only facilitates the overall assembly of the outer shell but also enhances the heat dissipation of the inner box body.

[0007] Preferably, a control panel is installed on one side of the outer shell where the door is located. A plurality of mechanical knobs and a power switch are installed on the control panel, and an indicator light is correspondingly arranged on one side of each mechanical knob. During actual operation, the various working parameters can be controlled through the mechanical knobs on the control panel, and the power on and off of the device can be controlled through the power switch.

[0008] Preferably, two microwave heaters are installed on the side wall of the inner box body at intervals side by side up and down. During actual operation, the microwave heaters can also be started as needed to perform microwave heating on the food placed in the inner box body.

[0009] Preferably, a shelf is provided in the inner box body to facilitate the placement of food trays.

[0010] Preferably, a handle is provided on the door, and a transparent viewing window is installed in the middle of the door. The handle facilitates the opening and closing of the door, and the transparent viewing window facilitates the observation of the food baking situation in the inner box body.

[0011] The beneficial effects of the high-efficiency double-circulation hot air oven provided by the utility model are as follows: The structure of this high-efficiency double-circulation hot air oven is simple. By adopting the structural design of double-machine hot air circulation plus top heating tubes, the air distribution can be made uniform, the thermal efficiency can be improved, and the energy consumption can be reduced. During actual operation, since a closed space is formed between the circulating air back plate and the back sealing plate, and the impellers of the first circulating air fan and the second circulating air fan are installed in the closed space, the back sealing plate is provided with an air inlet pipe communicating with the outside, and air return cavities are formed between the left and right ends of the circulating air back plate and the left and right end edges of the inner box body through the provided flanging. Therefore, when the impellers of the first circulating air fan and the second circulating air fan rotate, the external air will be sucked into the closed space through the air inlet pipe, and then after being heated by the first annular electric heating tube, the second annular electric heating tube, and the top heating tube, the heated air will be evenly transported into the inner box body through the air distribution holes in front of the impellers of the first circulating air fan and the second circulating air fan, ensuring uniform air distribution. At the same time, when the impellers rotate, part of the hot air in the inner box body will be re-sucked into the closed space through the air return cavities at the left and right ends of the circulating air back plate by the first circulating air fan and the second circulating air fan, and after being reheated by the first annular electric heating tube and the second annular electric heating tube, it will be evenly transported into the inner box body again through the air distribution holes, thereby realizing the circulation of the hot air to improve the hot air efficiency and reduce the energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0013] Figure 2 is an exploded three-dimensional structural schematic diagram of the present utility model.

[0014] Figure 3 is an internal three-dimensional structural schematic diagram of the present utility model.

[0015] Figure 4 is an exploded internal three-dimensional structural schematic diagram of the present utility model.

[0016] Figure 5 is a partial assembly schematic diagram of the internal structure of the present utility model.

[0017] Figure 6 is a partial exploded schematic diagram of the internal structure of the present utility model.

[0018] In the figure: 1. Outer housing; 101. Frame; 102. Rear back panel; 103. Left side panel; 104. Top panel; 105. Right side panel; 106. Bottom panel; 2. Door; 3. Transparent viewing window; 4. Handle; 5. Control panel; 6. Mechanical knob; 7. Indicator light; 8. Power switch; 9. Inner box body; 10. Microwave heater; 11. Inner support leg; 12. Back sealing plate; 13. Fan mounting seat; 14. First circulation fan; 15. First annular electric heating tube; 16. Second circulation fan; 17. Second annular electric heating tube; 18. Air inlet pipe; 19. Top heating tube; 20. Heating tube support; 21. Circulation air back panel; 22. Shelf; 23. Air distribution hole; 24. Flanging. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] Embodiment: An efficient double-circulation hot air oven.

[0021] Referring to Figures 1 to 6 As shown, an efficient double-circulation hot air oven includes: an outer housing 1, the outer housing 1 includes a frame 101, a left side panel 103, a top panel 104, a rear back panel 102, a right side panel 105 and a bottom panel 106 are respectively installed on the frame 101, and heat dissipation holes are provided on the rear back panel 102, the left side panel 103, the right side panel 105 and the bottom panel 106, which not only facilitates the overall assembly of the outer housing 1, but also enhances the heat dissipation of the inner box body 9.

[0022] A downward-opening door 2 is provided on the front side of the frame 101 of the outer housing 1, a handle 4 is provided on the door 2, and a transparent viewing window 3 is installed in the middle of the door 2. The handle 4 is provided to facilitate the opening or closing of the door 2, and the transparent viewing window 3 is provided to facilitate the observation of the food baking situation in the inner box body 9. A control panel 5 is installed on one side of the outer housing 1 where the door 2 is located. Three mechanical knobs 6 and a power switch 8 are installed on the control panel 5, and an indicator light 7 is correspondingly provided on one side of each mechanical knob 6. During actual operation, the working parameters can be controlled by the mechanical knobs 6 on the control panel 5, and the power on and off of the device can be controlled by the power switch 8.

[0023] An inner box body 9 is installed inside the outer shell body 1. A shelf 22 is arranged inside the inner box body 9 to facilitate the placement of food trays. Two microwave heaters 10 are installed on the side wall of the inner box body 9 at upper and lower positions with a certain interval. During actual operation, the microwave heaters 10 can also be started according to needs to perform microwave heating on the food placed inside the inner box body 9. The inner box body 9 is suspended above the bottom plate 106 of the outer shell body 1 through inner support legs 11. Through the above suspension design, it is beneficial to the heat dissipation of the electronic components installed between the inner box body 9 and the outer shell body 1. A circulating air back plate 21 is installed on the back inside the inner box body 9. Flanges 24 protruding inwards are arranged at both the left and right ends of the circulating air back plate 21, so that an air return cavity is formed between the circulating air back plate 21 and the left and right end edges of the inner box body 9. The main function of this air return cavity is to serve as an air return channel when the circulating hot air circulates. A back sealing plate 12 is installed behind the circulating air back plate 21. A closed space is formed between the circulating air back plate 21 and the back sealing plate 12. Two fan mounting seats 13 are installed on the back sealing plate 12 in parallel at intervals. The first circulating fan 14 and the second circulating fan 16 are respectively installed on the two fan mounting seats 13, and the two impellers on the first circulating fan 14 and the second circulating fan 16 are respectively located in the closed space formed between the circulating air back plate 21 and the back sealing plate 12. A first annular electric heating tube 15 is installed outside the impeller of the first circulating fan 14. A second annular electric heating tube 17 is installed outside the impeller of the second circulating fan 16. A top heating tube 19 is installed inside the top of the inner box body 9 through a heating tube support 20. Air distribution holes 23 are arranged on the circulating air back plate 21 directly in front of the first circulating fan 14 and the second circulating fan 16. The function of the air distribution holes 23 is to evenly distribute the hot air formed by the first circulating fan 14 and the second circulating fan 16 into the inner box body 9. An air inlet pipe 18 communicating with the outside of the outer shell body 1 is arranged on the back sealing plate 12. The function of the air inlet pipe 18 is to provide fresh air for the first circulating fan 14 and the second circulating fan 16.

[0024] This efficient double-cycle hot air oven has a simple structure. By adopting the structural design of double-machine hot air circulation plus top heating tubes, it can make the air distribution uniform, improve the thermal efficiency, and reduce energy consumption. During actual operation, since a sealed space is formed between the circulating air back plate 21 and the back sealing plate 12, and the impellers of the first circulating fan 14 and the second circulating fan 16 are installed in the sealed space, an air inlet pipe 18 communicating with the outside is provided on the back sealing plate 12, and air return cavities are formed between the left and right ends of the circulating air back plate 21 and the left and right end edges of the inner box body 9 through the provided flanging 24. Therefore, when the impellers of the first circulating fan 14 and the second circulating fan 16 rotate, the external air will be sucked into the sealed space through the air inlet pipe 18, and then after being heated by the first annular electric heating tube 15, the second annular electric heating tube 17, and the top heating tube 19, the heated air will be evenly transported into the inner box body 9 through the air distribution holes 23 in front of the impellers of the first circulating fan 14 and the second circulating fan 16 to ensure uniform air distribution. At the same time, when the impellers rotate, part of the hot air in the inner box body 9 will be sucked back into the sealed space through the air return cavities at the left and right ends of the circulating air back plate 21 by the first circulating fan 14 and the second circulating fan 16, and after being reheated by the first annular electric heating tube 15 and the second annular electric heating tube 17 again, it will be evenly transported back into the inner box body through the air distribution holes 23 again, thereby realizing the circulation of hot air to improve the hot air efficiency and reduce energy consumption.

[0025] The above is the preferred embodiment of the present invention, but the present invention should not be limited to the content disclosed in this embodiment and the drawings. Therefore, all equivalent or modified implementations completed without departing from the spirit disclosed by the present invention fall within the protection scope of the present invention.

Claims

1. An efficient double - circulation hot - air oven, comprising an outer housing, and a downward - folding door is arranged on the front side of the outer housing, characterized in that: An inner box body is installed inside the outer box body. The inner box body is suspended above the bottom plate of the outer box body through inner support legs. A circulating air back plate is installed on the back surface inside the inner box body. Flanges protruding inwards are provided at both the left and right ends of the circulating air back plate, so that an air return cavity is formed between the circulating air back plate and the left and right end edges of the inner box body. A back sealing plate is installed at the rear side of the circulating air back plate. A closed space is formed between the circulating air back plate and the back sealing plate. Two fan mounting seats are installed in parallel and at intervals on the back sealing plate. The first circulating fan and the second circulating fan are respectively installed on the two fan mounting seats, and the two impellers on the first circulating fan and the second circulating fan are respectively located in the closed space formed between the circulating air back plate and the back sealing plate. A first annular electric heating tube is installed outside the impeller of the first circulating fan. A second annular electric heating tube is installed outside the impeller of the second circulating fan. A top heating tube is installed on the inner side of the top of the inner box body. Air distribution holes are provided on the circulating air back plate directly in front of the first circulating fan and the second circulating fan. An air inlet pipe communicating with the outside of the outer box body is provided on the back sealing plate.

2. The high-efficiency double-cycle hot air oven according to claim 1, characterized in that: The outer box body includes a frame body. A left side plate, a top plate, a rear back plate, a right side plate and a bottom plate are respectively installed on the frame body. Heat dissipation holes are provided on the rear back plate, the left side plate, the right side plate and the bottom plate.

3. The high-efficiency double-circulation hot air oven according to claim 1, characterized in that: A control panel is installed on one side of the outer box body where the door is located. A plurality of mechanical knobs and a power switch are installed on the control panel. An indicator light is correspondingly arranged on one side of each mechanical knob.

4. The high-efficiency double-circulation hot air oven according to claim 1, characterized in that: Two microwave heaters are installed on the side wall of the inner box body, arranged side by side and at intervals up and down.

5. The high-efficiency double-cycle hot air oven according to claim 1, characterized in that: A shelf is arranged inside the inner box body.

6. The high-efficiency double-circulation hot air oven according to claim 1, characterized in that: A handle is provided on the door. A transparent viewing window is installed in the middle of the door.

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