Intelligent uniform-temperature air duct and oven thereof

Abstract

The invention discloses an intelligent uniform-temperature air duct and an oven thereof, and belongs to the field of ovens. Comprising a box body and a shell, a ventilation space is formed between the box body and the shell, and a plurality of air channels are formed in the ventilation space; the air duct comprises an air supply duct system located in a main air duct plate at the rear end outside the box body, a first air duct system located in a first partition air duct plate on one side outside the box body, a second air duct system located in a second partition air duct plate on the other side outside the box body, and an air return duct system located in a main air return plate at the bottom outside the box body. The oven has the beneficial effects that in the scheme, a multi-air-duct scheme is adopted, air passing amount compensation is conducted on different areas of the oven, the air passing uniformity is improved, and in addition, the temperature field in the oven is dynamically adjusted in the mode of temperature monitoring and independent air supply of the different areas. Optionally, patch type heating wires and semiconductor chilling plates can be additionally arranged in different independent air supply ducts of the oven, secondary adjustment is conducted on the air supply temperature in the different air supply ducts, and the uniformity of the temperature is improved.

Description

Technical Field

[0001] The invention relates to an intelligent uniform temperature air duct and an oven thereof, belonging to the field of ovens. Background Art

[0002] As more and more ovens are available on the market, how to make the oven bake more evenly after the oven meets the basic baking capacity is one of the future development directions of oven products. In the current market, when the oven is in use, due to the influence of various complex factors such as uneven heating air field and uneven distance of the baking tray from the heat source, there is a phenomenon of uneven local temperature field in the box, which indirectly leads to poor baking quality of food due to uneven heating during the baking process. We have received feedback from users that when baking the same layer of biscuits / foods, some areas are already burnt, while others are not yet cooked. Therefore, it is necessary to improve the baking uniformity of the oven.

[0003] In the market solution, heating wires are usually installed at different positions of the baking tray, and the shape of the heating wires is changed to make them fit the baking tray space as evenly as possible to optimize the temperature uniformity inside the oven. In addition, there are also some solutions that adjust the air volume of different areas inside the oven by changing the size of the air vents of each air duct of the oven, and adjust the temperature distribution inside the oven by distributing the hot air volume; but in the user feedback of these solutions, some areas are still burnt while others are not yet cooked.

[0004] In general, the current solution mainly controls the temperature by adjusting the heat source, such as the shape of the heating wire; but it is difficult to distribute the heat source evenly in the corresponding position of the heated area. At the same time, during the air supply process, the air supply temperature is single and is affected by the inconsistent air volume in different areas, which is not conducive to the control of the overall temperature field. Summary of the invention

[0005] The object of the present invention is to provide an intelligent uniform temperature air duct and an oven thereof, which can effectively solve the above-mentioned problems.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: It comprises a box body and a shell, a ventilation space is formed between the box body and the shell, and a plurality of air ducts are arranged in the ventilation space; The air duct includes an air supply duct system in a main air duct plate at the rear end outside the box, a first air duct system in a first partition air duct plate on one side outside the box, a second air duct system in a second partition air duct plate on the other side outside the box, and a return air duct system in a main return air plate at the bottom outside the box; A mounting groove is provided in the middle of the main air duct plate, and a blower is provided at the mounting groove; The air supply duct system includes a first integrated air duct connected to the upper end of the installation slot and arranged in the direction of the first partition air duct plate, a second integrated air duct connected to the upper end of the installation slot and arranged in the direction of the second partition air duct plate, and an air inlet duct connected to the lower end of the installation slot and arranged in the direction of the main return air plate; The first air duct system includes a first ventilation duct arranged on the first partition air duct plate, the end of the first ventilation duct is connected to a first ventilation hole, and the first ventilation hole is connected to the inside of the box; The second air duct system includes a second ventilation duct arranged on the second partition air duct plate, the end of the second ventilation duct is connected to a second ventilation hole, and the second ventilation hole is communicated with the interior of the box; The return air duct system comprises a return air duct arranged on the main return air plate, the return air duct is connected with a return air hole, and the return air hole is connected with the interior of the box; The supply air duct system is in communication with the first air duct system, the second air duct system, and the return air duct system; and the return air duct system is in communication with the second air duct system.

[0007] Furthermore: the air supply duct system, the first air duct system, the second air duct system, and the return air duct system are all provided with an auxiliary heat source module for adjusting the temperature; the auxiliary heat source module is integrated by a semiconductor cooling sheet and a patch-type heating wire.

[0008] Further: the first integrated air duct is connected to the first air supply duct, the second air supply duct, the third air supply duct, and the fourth air supply duct; the first ventilation duct includes the first air delivery duct, the second air delivery duct, the third air delivery duct, and the fourth air delivery duct; The output port of the first air supply duct is at the same level as the input port of the first air delivery duct; The output port of the second air supply duct is at the same level as the input port of the second air delivery duct; The output port of the third air supply duct is at the same level as the input port of the third air delivery duct; The output port of the fourth air supply duct is at the same level as the input port of the fourth air delivery duct; The number of the first ventilation holes is four, and they are evenly arranged near the four corners of the first partition air duct plate.

[0009] Further: the first ventilation hole includes a first air supply hole, a second air supply hole, a third air supply hole, and a fourth air supply hole; the first air supply hole is connected to the first air supply duct, the second air supply hole is connected to the second air supply duct, the third air supply hole is connected to the third air supply duct, and the fourth air supply hole is connected to the fourth air supply duct; the first air supply hole and the second air supply hole are at the same horizontal height, and the third air supply hole and the fourth air supply hole are at the same horizontal height.

[0010] Further: the second integrated air duct is connected to the fifth air supply duct, the sixth air supply duct, the seventh air supply duct, and the eighth air supply duct; the second ventilation duct includes the fifth air delivery duct, the sixth air delivery duct, the seventh air delivery duct, and the eighth air delivery duct; The output port of the fifth air supply duct is at the same level as the input port of the fifth air delivery duct; The output port of the sixth air supply duct is at the same level as the input port of the sixth air delivery duct; The output port of the seventh air supply duct is at the same level as the input port of the seventh air delivery duct; The output port of the eighth air supply duct is at the same level as the input port of the eighth air delivery duct; The number of the second ventilation holes is four, and they are evenly arranged near the four corners of the second partition air duct plate.

[0011] Further: the second ventilation hole includes a fifth air supply hole, a sixth air supply hole, a seventh air supply hole, and an eighth air supply hole; the fifth air supply hole is connected to the fifth air supply duct, the sixth air supply hole is connected to the sixth air supply duct, the seventh air supply hole is connected to the seventh air supply duct, and the eighth air supply hole is connected to the eighth air supply duct; the fifth air supply hole and the sixth air supply hole are at the same horizontal height, and the seventh air supply hole and the eighth air supply hole are at the same horizontal height.

[0012] Further: the input port of the air inlet duct is connected to the output port of the return air duct; the return air duct includes a main duct and a branch duct connected to the return air hole; the branch duct includes a first branch duct, a second branch duct, a third branch duct, and a fourth branch duct; the number of the return air holes is four, and they are evenly arrayed at the four corners close to the main return air plate, and the return air holes include a first air outlet hole connected to the first branch duct, a second air outlet hole connected to the second branch duct, a third air outlet hole connected to the third branch duct, and a fourth air outlet hole connected to the fourth branch duct.

[0013] Further: the branch channel also includes a fifth branch channel, the fifth branch channel, and the second ventilation duct also includes a main air supply duct, the main air supply duct is connected to the fifth air supply duct, the sixth air supply duct, and the seventh air supply duct, and the output port of the main air supply duct is at the bottom, and the input end interface of the fifth branch channel is on the other side of the box.

[0014] An intelligent temperature-averaging oven, the box body of the oven is consistent with the box body of the air duct.

[0015] The beneficial effects are: The present invention installs temperature probes at different positions on the bottom of each baking tray at different layers to collect and compare the temperature on the baking tray. At the same time, by setting multiple independent air supply ducts and return air ducts, and using air doors to control the opening and closing of each air duct, air is independently supplied to different areas inside the oven. Optionally, a patch heating wire or a semiconductor cooling sheet can be installed inside each independent air duct to control the hot air temperature in the independent air duct, adjust the air supply temperature in each air duct, and when the temperature reaches the set value, open the air door to control the air supply temperature.

[0016] In this solution, a multi-air duct solution is adopted to compensate for the over-air volume in different areas of the oven to improve the uniformity of over-air flow. In addition, temperature monitoring and independent air supply in different partitions are used to dynamically adjust the temperature field inside the oven. Optionally, patch-type heating wires and semiconductor cooling sheets can be added to different independent air supply ducts of the oven to perform secondary adjustments on the air supply temperature in different air supply ducts to improve temperature uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For ease of explanation, the present invention is described in detail with reference to the following specific implementations and the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the structure of an oven of the present invention; Figure 2 This is a structural diagram of the first partition air duct plate of the present invention; Figure 3 This is a structural diagram of the second partition air duct plate of the present invention; Figure 4 This is the airflow diagram of the first partition air duct plate after the air duct is fully opened in the present invention; Figure 5 This is the airflow diagram of the second partition air duct plate after the air duct is fully opened; Figure 6 This is the airflow diagram of the main air duct plate after the upper air duct of the present invention is opened; Figure 7 This is the airflow diagram of the first partition air duct plate after the upper air duct of the present invention is opened; Figure 8 The internal airflow diagram of the oven after the upper air duct of the present invention is opened; Fig. 9This is the airflow diagram of the second partition air duct plate after the upper air duct of the present invention is opened; Fig.10 This is the airflow diagram of the main return air plate after the upper air duct of the present invention is opened.

[0019] Description of reference numerals: 1. Box; 2. Main air duct plate; 3. First partition air duct plate; 4. Second partition air duct plate; 5. Main return air plate; 6. Air supply duct system; 61. First integrated air duct; 611. First air supply duct; 612. Second air supply duct; 613. Third air supply duct; 614. Fourth air supply duct; 62. Second integrated air duct; 621. Fifth air supply duct; 622. Sixth air supply duct; 623. Seventh air supply duct; 624. Eighth air supply duct; 63. Air inlet duct; 7. First air duct system; 71. First ventilation duct; 711. First air delivery duct; 712. Second air delivery duct; 713. Third air delivery duct; 714. Fourth air delivery duct; 72. First ventilation hole; 721. First air supply hole; 722. Second air supply hole; 723. Third air supply hole; 724. Fourth air supply hole ;8. Second air duct system;81. Second ventilation duct;811. Fifth air supply duct;812. Sixth air supply duct;813. Seventh air supply duct;814. Eighth air supply duct;815. Main air supply duct;82. Second ventilation hole;821. Fifth air supply hole;822. Sixth air supply hole;823. Seventh air supply hole;824. Eighth air supply hole;9. Return air duct system;91. Return air duct;92. Return air hole;911. First branch channel;912. Second branch channel;913. Third branch channel;914. Fourth branch channel;915. Main channel;916. Fifth branch channel;921. First air outlet;922. Second air outlet;923. Third air outlet;924. Fourth air outlet;10. Mounting slot;11. Air blower;12. Auxiliary heat source module;13. Air damper. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0021] It should be noted that, in the description of the present invention, unless otherwise specified, “plurality” means two or more than two; the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside”, “outside”, “front end”, “rear end”, “head” and “tail” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Furthermore, the terms “first,” “second,” “third,” etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0023] Meanwhile, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-5 This is an embodiment of an intelligent uniform temperature air duct and an oven thereof of the present invention. It comprises a box body 1 and an outer shell, a ventilation space is formed between the box body 1 and the outer shell, and a plurality of air ducts are arranged in the ventilation space; The box body 1 in the present device is an oven, and a double-layer or triple-layer baking tray is arranged in the oven; and corresponding through holes are opened in the oven, and these through holes are connected to the ventilation space, participate in the circulation of hot air, and help to achieve uniform temperature inside the entire oven, so that the food in the baking tray can be heated and baked synchronously; and some of the food will not be burnt.

[0025] The air ducts in the device are relatively complex. Four mounting plates are provided to set up these air ducts. The four mounting plates are respectively a main air duct plate 2 located at the rear end of the outer box 1, a first partition air duct plate 3 located at one side of the outer box 1, a second partition air duct plate 4 located at the other side of the outer box 1, and a main return air plate 5 located at the bottom of the outer box 1. Combined with the inner surface of the shell, multiple air ducts are opened in the main air duct plate 2 to form a supply air duct system 6; multiple air duct first air duct system 7 is opened in the first partition air duct plate 3; multiple air ducts are opened in the second partition air duct plate 4 to form a second air duct system 8; multiple air duct return air duct system 9 is opened in the main return air plate 5; In the present device, a mounting groove 10 is provided in the middle portion of the main air duct plate 2, and a blower 11 is provided at the position of the mounting groove 10; the blower 11 is the driving core of the entire ventilation system, and because the blower 11 is provided on the main air duct plate 2, the air duct system on the main air duct plate 2 is called the air supply duct system 6; when the blower 11 is working, the gas in the oven box 1 is extracted, and then transmitted to the remaining first air duct system 7, second air duct system 8, and return air duct system 9 through the air supply duct system 6; so that the hot air in the oven box 1 that has been extracted enters the oven box 1 again along with the first air duct system 7 and the second air duct system 8, so that the heat in the entire oven box 1 is more balanced, and finally returns to the air supply duct system 6 through the return air duct system 9, completing a cycle.

[0026] The blower 11 in the device is driven by a motor that can rotate forward and reverse. By controlling the opening and closing of different dampers 13 and the rotation direction of the fan, it is determined whether different air duct vents are for outlet or return air, thereby distributing and guiding the air volume inside the oven to a certain extent.

[0027] At the same time, in the device, air doors 13 are arranged in different air ducts, and the switch of the air doors 13 can be controlled to realize the conduction of different air ducts, thereby realizing different heating modes.

[0028] The following is the full duct heating mode with the air door 13 fully open.

[0029] Specific structure: The air supply duct system 6 includes a first integrated air duct 61 connected to the upper end of the installation slot 10 and arranged in the direction of the first partition air duct plate 3, a second integrated air duct 62 connected to the upper end of the installation slot 10 and arranged in the direction of the second partition air duct plate 4, and an air inlet duct 63 connected to the lower end of the installation slot 10 and arranged in the direction of the main return air plate 5; After the blower 11 is turned on, negative pressure is formed, and the airflow is supplemented into the installation groove 10 from the air inlet duct 63, and then the impeller of the blower 11 blows one or both of the first integrated air duct 61 and the second integrated air duct 62; the air inlet position of the second integrated air duct 62 in the present device is provided with an electrically controlled damper 13, and when the damper 13 is opened, the second integrated air duct 62 will be connected, and the airflow generated by the blower 11 can enter the second integrated air duct 62, while no damper 13 is provided in the first integrated air duct 61; the current description is of the full-duct heating mode, so the damper 13 of the second integrated air duct 62 is in an open state, then the airflow will enter both the first integrated air duct 61 and the second integrated air duct 62 at the same time.

[0030] After the airflow flows to the first integrated air duct 61, the airflow enters the first air duct system 7 on the first partitioned air duct plate 3; The first air duct system 7 includes a first ventilation duct 71, and the end of the first ventilation duct 71 is connected to a first ventilation hole 72, and the first ventilation hole 72 is connected to the inside of the box body 1; at this time, the airflow passes through the first ventilation duct 71, and then enters the inside of the oven box body 1 from the first ventilation hole 72; After the airflow flows to the second integrated air duct 62, the airflow will enter the second air duct system 8 on the second partitioned air duct plate 4; The second air duct system 8 in the present device includes a second ventilation duct 81 arranged on the second partition air duct plate 4, and the end of the second ventilation duct 81 is connected to a second ventilation hole 82, and the second ventilation hole 82 is connected to the interior of the box body 1; at this time, the air flow will pass through the second ventilation duct 81, and then enter the interior of the oven box body 1 from the second ventilation hole 82.

[0031] At this time, the air inlet 63 in the device is actually connected to the return air duct system 9, so the air flow inside the oven box 1 will flow downward and enter the return air duct system 9; the return air duct system 9 includes a return air duct 91 arranged on the main return air plate 5, and the return air duct 91 is connected to a return air hole 92, and the return air hole 92 is connected to the inside of the box 1; Therefore, the airflow inside the oven body 1 flows downward through the return air hole 92 into the return air duct 91, and then returns to the air inlet duct 63 through the return air duct 91, completing the circulation of the airflow in the entire duct, and achieving temperature balance.

[0032] The air supply duct system 6, the first air duct system 7, the second air duct system 8, and the return air duct system 9 are all provided with an auxiliary heat source module 12 for adjusting the temperature; the auxiliary heat source module 12 is composed of a semiconductor cooling sheet and a patch-type heating wire.

[0033] In this device, semiconductor cooling sheets and patch-type heating wire slots are added, and the semiconductor cooling sheets and patch-type heating wires are integrated into an auxiliary heat source module to adjust the final air outlet temperature in each independent air duct. A temperature sensing unit is installed at the end of the independent air duct. When the auxiliary heat source (semiconductor cooling sheet, auxiliary heating wire) adjusts the supply air temperature to the set value, the air door is opened to supply air.

[0034] See also Figure 6-10 ; At the same time, in order to further improve the temperature balance in the oven, the device adds more air ducts, and at the same time refines the setting position and number of the auxiliary heat source module 12, and refines the setting position of the air door 13; different baking modes of the oven can be realized; first, the upper layer heating mode and the lower layer heating mode are explained.

[0035] The structures of different baking modes are as follows: the first integrated air duct 61 is connected with the first air supply duct 611, the second air supply duct 612, the third air supply duct 613, and the fourth air supply duct 614; the first ventilation duct 71 includes the first air delivery duct 711, the second air delivery duct 712, the third air delivery duct 713, and the fourth air delivery duct 714; The output port of the first air supply duct 611 and the input port of the first air delivery duct 711 are at the same level; The output port of the second air supply duct 612 and the input port of the second air delivery duct 712 are at the same level; The output port of the third air supply channel 613 and the input port of the third air delivery channel 713 are at the same level; The output port of the fourth air supply channel 614 and the input port of the fourth air delivery channel 714 are at the same level; There are four first ventilation holes 72 , which are evenly arranged near the four corners of the first partition air duct plate 3 .

[0036] The first ventilation hole 72 includes a first air supply hole 721, a second air supply hole 722, a third air supply hole 723, and a fourth air supply hole 724; the first air supply hole 721 is connected to the first air supply duct 711, the second air supply hole 722 is connected to the second air supply duct 712, the third air supply hole 723 is connected to the third air supply duct 713, and the fourth air supply hole 724 is connected to the fourth air supply duct 714; the first air supply hole 721 and the second air supply hole 722 are at the same horizontal height, and the third air supply hole 723 and the fourth air supply hole 724 are at the same horizontal height.

[0037] For the upper layer heating mode, it is only necessary to pay attention to which air duct the first air supply hole 721 and the second air supply hole 722 located on the upper layer are connected to; because the first air supply hole 721 and the second air supply hole 722 are arranged in the upper half of the oven housing 1; The first air supply duct 611, the fourth air supply duct 614, the second air delivery duct 712, and the third air delivery duct 713 in the device are provided with dampers 13. When the dampers 13 in the fourth air supply duct 614 and the third air delivery duct 713 are closed, the air flow will not flow to the third air supply hole 723 and the fourth air supply hole 724 located in the lower half of the oven housing 1. The specific direction of the air flow is: from the first air supply duct 611 to the first air delivery duct 711, then through the first air delivery duct 711 to the first air supply hole 721, and enters the box 1 from the first air supply hole 721; from the second air supply duct 612 to the second air delivery duct 712, then through the second air delivery duct 712 to the second air supply hole 722, and enters the box 1 from the second air supply hole 722, completing the transportation of the upper heated air flow, and then exchanging and outputting the heated air flow.

[0038] For the lower layer heating mode, it is only necessary to pay attention to which air duct the third air supply hole 723 and the fourth air supply hole 724 located in the lower layer are connected to; because the third air supply hole 723 and the fourth air supply hole 724 are arranged in the lower half of the oven box 1; The first air supply duct 611, the fourth air supply duct 614, the second air delivery duct 712, and the third air delivery duct 713 in the device are provided with dampers 13. When the dampers 13 in the first air supply duct 611 and the second air delivery duct 712 are closed, the air flow will not flow to the first air supply hole 721 and the second air supply hole 722 located in the upper part of the oven housing 1. The specific direction of the air flow is: from the third air supply duct 613 to the third air delivery duct 713, and then through the third air delivery duct 713 to the third air supply hole 723, and enters the box body 1 from the third air supply hole 723; from the fourth air supply duct 614 to the fourth air delivery duct 714, and then through the fourth air delivery duct 714 to the fourth air supply hole 724, and enters the box body 1 from the fourth air supply hole 724; complete the transportation of the lower layer of heated airflow, and then exchange and output the heated airflow.

[0039] For the exchange and output of heated airflow, it is also divided into upper and lower layers.

[0040] The specific structure is as follows: the second integrated air duct 62 is connected to the fifth air supply duct 621, the sixth air supply duct 622, the seventh air supply duct 623, and the eighth air supply duct 624; the second ventilation duct 81 includes the fifth air delivery duct 811, the sixth air delivery duct 812, the seventh air delivery duct 813, and the eighth air delivery duct 814; The output port of the fifth air supply channel 621 and the input port of the fifth air delivery channel 811 are at the same level; The output port of the sixth air supply duct 622 is at the same level as the input port of the sixth air delivery duct 812; The output port of the seventh air supply duct 623 and the input port of the seventh air delivery duct 813 are at the same level; The output port of the eighth air supply duct 624 is at the same level as the input port of the eighth air delivery duct 814; There are four second ventilation holes 82 , which are evenly arranged near the four corners of the second partition air duct plate 4 .

[0041] The second ventilation hole 82 includes a fifth air supply hole 821, a sixth air supply hole 822, a seventh air supply hole 823, and an eighth air supply hole 824; the fifth air supply hole 821 is connected to the fifth air supply duct 811, the sixth air supply hole 822 is connected to the sixth air supply duct 812, the seventh air supply hole 823 is connected to the seventh air supply duct 813, and the eighth air supply hole 824 is connected to the eighth air supply duct 814; the fifth air supply hole 821 and the sixth air supply hole 822 are at the same horizontal height, and the seventh air supply hole 823 and the eighth air supply hole 824 are at the same horizontal height.

[0042] For the upper layer heating mode, it is only necessary to pay attention to which air duct the fifth air supply hole 821 and the sixth air supply hole 822 are connected to, because the fifth air supply hole 821 and the sixth air supply hole 822 are arranged in the upper part of the oven box 1; The fifth air supply duct 621, the sixth air delivery duct 812, the seventh air delivery duct 813, and the eighth air delivery duct 814 in the device are provided with dampers 13; when the dampers 13 in the seventh air delivery duct 813 and the eighth air delivery duct 814 are closed, the air flow will flow to the fifth air supply hole 821 and the sixth air supply hole 822 located in the upper part of the oven housing 1; The specific air flow direction is: the air flow in the oven box 1 enters the fifth air duct 811 through the fifth air supply hole 821, enters the sixth air duct 812 through the sixth air supply hole 822, and then converges into the main air duct 815; at this time, the main air duct 815 is connected with the return air duct 91 in the return air duct system 9, and the air flow enters the return air duct 91 through the main air duct 815.

[0043] For the lower layer heating mode, it is only necessary to pay attention to which air duct the seventh air supply hole 823 and the eighth air supply hole 824 are connected to, because the seventh air supply hole 823 and the eighth air supply hole 824 are arranged in the lower half of the oven housing 1; The fifth air supply duct 621, the sixth air delivery duct 812, the seventh air delivery duct 813, and the eighth air delivery duct 814 in the device are provided with air doors 13; when the air doors 13 in the fifth air supply duct 621 and the sixth air delivery duct 812 are closed, the air flow will flow to the seventh air supply hole 823 and the eighth air supply hole 824 located in the lower half of the oven housing 1; The specific air flow direction is: the air flow in the oven box 1 passes through the seventh air supply hole 823 and enters the seventh air duct 813; since the main air duct 815 is only connected to the seventh air duct 813, the main air duct 815 at this time is connected to the return air duct 91 in the return air duct system 9, and the air flow passes through the main air duct 815 and enters the return air duct 91; the main air duct 815 is not connected to the eighth air duct 814, so the air flow will not pass through the eighth air supply hole 824.

[0044] Next, let’s look at the biggest differences between the upper and lower heating modes, which are mainly set in the return air duct system 9; The input port of the air inlet duct 63 is connected to the output port of the return air duct 91; the return air duct 91 includes a main channel 915 and a branch channel connected to the return air hole 92; the branch channel includes a first branch channel 911, a second branch channel 912, a third branch channel 913, and a fourth branch channel 914; there are four return air holes 92, which are evenly arrayed at the four corners near the main return air plate 5, and the return air holes 92 include a first air outlet hole 921 connected to the first branch channel 911, a second air outlet hole 922 connected to the second branch channel 912, a third air outlet hole 923 connected to the third branch channel 913, and a fourth air outlet hole 924 connected to the fourth branch channel 914.

[0045] The branch channel also includes a fifth branch channel 916. The fifth branch channel 916 and the second ventilation duct 81 also include a main air supply channel 815. The main air supply channel 815 is connected to the fifth air supply channel 811, the sixth air supply channel 812, and the seventh air supply channel 813. The output port of the main air supply channel 815 is at the bottom, and the input end interface of the fifth branch channel 916 is on the other side of the box 1.

[0046] For the upper layer heating mode, a damper 13 is provided in the main channel 915 of the present device. When the damper 13 is closed, the first branch channel 911, the second branch channel 912, the third branch channel 913 and the fourth branch channel 914 are actually not conductive; therefore, the airflow will not enter the return air duct system 9 from the first air outlet 921, the second air outlet 922, the third air outlet 923 and the fourth air outlet 924; it will only flow through the fifth branch channel 916 connected to the main air supply duct 815, and then merge from the fifth branch channel 916 into the half main channel 915 cut off by the damper 13, and finally complete the circulation from the air inlet duct 63 inside the main channel 915.

[0047] For the lower layer heating mode, the air flow output mode of the upper layer heating mode can be adopted, and another mode can be adopted at the same time; this mode is to open the damper 13 in the main channel 915, and the air flow will pass through the first air outlet 921, the second air outlet 922, the third air outlet 923, and the fourth air outlet 924 into the first branch channel 911, the second branch channel 912, the third branch channel 913, and the fourth branch channel 914, and then be gathered into the main channel 915 by the first branch channel 911, the second branch channel 912, the third branch channel 913, and the fourth branch channel 914, and finally complete the circulation from the air inlet 63 inside the main channel 915 machine.

[0048] In the present device, a plurality of temperature probes are arranged inside the oven box 1. These temperature probes are arranged on both sides of the oven box 1 and near each air supply hole.

[0049] In the switching and selection of different baking modes, this device introduces a temperature probe to collect and compare the temperature on the baking tray. At the same time, by setting up multiple independent air supply ducts and return air ducts, and using air doors to control the opening and closing of each duct, air can be supplied to different areas inside the oven independently. Optionally, a patch heating wire or a semiconductor cooling sheet can be installed inside each independent duct to control the hot air temperature in the independent duct and adjust the air supply temperature in each duct. When the temperature reaches the set value, the air door is opened to control the air supply temperature.

[0050] In this solution, a multi-air duct solution is adopted to compensate for the over-air volume in different areas of the oven to improve the uniformity of over-air flow. In addition, temperature monitoring and independent air supply in different partitions are used to dynamically adjust the temperature field inside the oven. Optionally, patch-type heating wires and semiconductor cooling sheets can be added to different independent air supply ducts of the oven to perform secondary adjustments on the air supply temperature in different air supply ducts to improve temperature uniformity.

[0051] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An intelligent temperature-averaging air duct, characterized in that: The invention comprises a box body (1) and an outer shell, wherein a ventilation space is formed between the box body (1) and the outer shell, and a plurality of air ducts are arranged in the ventilation space; the air ducts comprise an air supply duct system (6) in a main air duct plate (2) located at the rear end outside the box body (1), a first air duct system (7) in a first partition air duct plate (3) on one side outside the box body (1), a second air duct system (8) in a second partition air duct plate (4) on the other side outside the box body (1), and a return air duct system (9) in a main return air plate (5) at the bottom outside the box body (1); a mounting groove (10) is arranged in the middle portion of the main air duct plate (2), and a blower (11) is arranged at the mounting groove (10); The air supply duct system (6) comprises a first integrated air duct (61) connected to the upper end of the mounting groove (10) and arranged in the direction of the first partition air duct plate (3), a second integrated air duct (62) connected to the upper end of the mounting groove (10) and arranged in the direction of the second partition air duct plate (4), and an air inlet duct (63) connected to the lower end of the mounting groove (10) and arranged in the direction of the main return air plate (5); The first air duct system (7) comprises a first ventilation duct (71) arranged on the first partition air duct plate (3), the end of the first ventilation duct (71) being connected to a first ventilation hole (72), and the first ventilation hole (72) being connected to the interior of the box (1); The second air duct system (8) comprises a second ventilation duct (81) arranged on the second partition air duct plate (4), the end of the second ventilation duct (81) being connected to a second ventilation hole (82), and the second ventilation hole (82) being connected to the interior of the box (1); The return air duct system (9) comprises a return air duct (91) arranged on the main return air plate (5), the return air duct (91) being connected to a return air hole (92), the return air hole (92) being connected to the interior of the box body (1); the supply air duct system (6) being connected to the first air duct system (7), the second air duct system (8), and the return air duct system (9); and the return air duct system (9) being connected to the second air duct system (8).

2. The intelligent temperature-averaging air duct according to claim 1, characterized in that: The air supply duct system (6), the first air duct system (7), the second air duct system (8), and the return air duct system (9) are all provided with an auxiliary heat source module (12) for adjusting the temperature; the auxiliary heat source module (12) is composed of a semiconductor cooling sheet and a patch-type heating wire.

3. The intelligent temperature-averaging air duct according to claim 2 is characterized in that: The first integrated air duct (61) is connected to a first air supply duct (611), a second air supply duct (612), a third air supply duct (613), and a fourth air supply duct (614); the first ventilation duct (71) includes a first air delivery duct (711), a second air delivery duct (712), a third air delivery duct (713), and a fourth air delivery duct (714); an output port of the first air supply duct (611) is at the same level as an input port of the first air delivery duct (711); The output port of the second air supply duct (612) and the input port of the second air delivery duct (712) are at the same level; The output port of the third air supply duct (613) and the input port of the third air delivery duct (713) are at the same level; the output port of the fourth air supply duct (614) and the input port of the fourth air delivery duct (714) are at the same level; the number of the first ventilation holes (72) is four, which are evenly arranged in an array near the four corners of the first partition air duct plate (3).

4. The intelligent temperature-averaging air duct according to claim 3 is characterized in that: The first ventilation hole (72) comprises a first air supply hole (721), a second air supply hole (722), a third air supply hole (723), and a fourth air supply hole (724); the first air supply hole (721) is connected to the first air supply duct (711), the second air supply hole (722) is connected to the second air supply duct (712), the third air supply hole (723) is connected to the third air supply duct (713), and the fourth air supply hole (724) is connected to the fourth air supply duct (714); the first air supply hole (721) and the second air supply hole (722) are at the same horizontal height, and the third air supply hole (723) and the fourth air supply hole (724) are at the same horizontal height.

5. The intelligent temperature-averaging air duct according to claim 4 is characterized in that: The second integrated air duct (62) is connected to the fifth air supply duct (621), the sixth air supply duct (622), the seventh air supply duct (623), and the eighth air supply duct (624); the second ventilation duct (81) includes the fifth air delivery duct (811), the sixth air delivery duct (812), the seventh air delivery duct (813), and the eighth air delivery duct (814); the output port of the fifth air supply duct (621) is at the same level as the input port of the fifth air delivery duct (811); The output port of the sixth air supply channel (622) and the input port of the sixth air delivery channel (812) are at the same level; The output port of the seventh air supply channel (623) and the input port of the seventh air delivery channel (813) are at the same level; The output port of the eighth air supply duct (624) is at the same level as the input port of the eighth air delivery duct (814); the number of the second ventilation holes (82) is four, which are evenly arranged near the four corners of the second partition air duct plate (4).

6. The intelligent temperature-averaging air duct according to claim 5, characterized in that: The second ventilation hole (82) includes a fifth air supply hole (821), a sixth air supply hole (822), a seventh air supply hole (823), and an eighth air supply hole (824); the fifth air supply hole (821) is connected to the fifth air supply duct (811), the sixth air supply hole (822) is connected to the sixth air supply duct (812), the seventh air supply hole (823) is connected to the seventh air supply duct (813), and the eighth air supply hole (824) is connected to the eighth air supply duct (814); the fifth air supply hole (821) and the sixth air supply hole (822) are at the same horizontal height, and the seventh air supply hole (823) and the eighth air supply hole (824) are at the same horizontal height.

7. The intelligent temperature-averaging air duct according to claim 6, characterized in that: The input port of the air inlet duct (63) is connected to the output port of the return air duct (91); the return air duct (91) comprises a main duct (915) and a branch duct connected to the return air hole (92); the branch duct comprises a first branch duct (911), a second branch duct (912), a third branch duct (913), and a fourth branch duct (914); the return air holes (92) are four in number and are evenly arrayed at four corners close to the main return air plate (5); the return air holes (92) comprise a first air outlet hole (921) connected to the first branch duct (911), a second air outlet hole (922) connected to the second branch duct (912), a third air outlet hole (923) connected to the third branch duct (913), and a fourth air outlet hole (924) connected to the fourth branch duct (914).

8. The intelligent temperature-averaging air duct according to claim 7, characterized in that: The branch channel also includes a fifth branch channel (916), and the second ventilation channel (81) also includes a main air supply channel (815). The main air supply channel (815) is connected to the fifth air supply channel (811), the sixth air supply channel (812), and the seventh air supply channel (813), and the output port of the main air supply channel (815) is at the bottom, and the input end interface of the fifth branch channel (916) is on the other side of the box (1).

9. An intelligent temperature-averaging oven, characterized in that: The oven comprises the uniform temperature air duct according to any one of claims 1 to 8.

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