A hot air circulating heating fan and oven

Abstract

The application relates to the technical field of energy-saving equipment, in particular to a hot air circulating heating fan and an oven, which comprises a center pipe fixedly connected in an inner container, a frame fixedly connected outside the inner container, a motor x fixedly connected on the frame, a fan blade rotatably connected on the frame, a heating sheet arranged in the center pipe, a suction device fixedly connected on the inner container, a mounting frame fixedly connected in the center pipe, and an inclined plate rotatably connected on the mounting frame. The application uses a sensing control device to detect the smoke when the suction device in the circulating air flow is used, and when the food is burnt, the operation mode of the application can be switched, the heating air flow and the circulating air flow are stopped, and the air flow containing the smoke is discharged outward, so that the abnormal energy consumption of the application is reduced, the cleaning work caused by the smoke accumulation is reduced, and the use effect of the application is improved.

Description

Technical Field

[0001] This invention relates to the field of energy-saving equipment technology, specifically to a hot air circulating heating fan and an oven. Background Technology

[0002] An oven is an appliance used for baking food and is one of the most commonly used appliances in households. Ovens are generally divided into two types: convection ovens and flat ovens. Convection ovens use hot air circulation to bake food, making the baking temperature inside the oven more uniform. Flat ovens, on the other hand, use the heat source directly to bake food, and there will be a certain temperature difference in different parts of the oven. They are suitable for foods with special baking requirements. Each type has its own advantages and characteristics.

[0003] When using a convection oven, inexperienced users often fail to accurately control the temperature and time, resulting in food burning. Burnt food produces smoke and odors, making oven cleaning difficult. Furthermore, burnt food causes localized heating, leading to uneven temperatures inside the oven. This forces the oven to consume more energy to compensate for the temperature differences, increasing energy consumption and affecting the oven's energy efficiency. Summary of the Invention

[0004] In view of the technical defects mentioned in the background art, the present invention provides a hot air circulation heating fan and an oven.

[0005] A hot air circulation heating fan includes: a central tube; a frame communicating with the central tube; fan blades fixedly connected to a motor x on the frame, the fan blades being fixed to the output end of the motor x; heating elements disposed inside the central tube, the heating elements generating heat when energized, the heating elements having openings for airflow to pass through, and at least three heating elements being disposed; and a suction device communicating with the frame, the suction device drawing airflow back into the frame.

[0006] More preferably, the hot air circulation heating fan further includes: the heating element can be configured into two states, one in which the openings are aligned to form a straight channel, and the other in which the openings are misaligned to form a spiral channel, and the heating element rotates to switch between these two states.

[0007] More preferably, the hot air circulating heating fan further includes: a fixing block fixedly connected to each heating element; a stop block x fixedly connected to the inner wall of the central tube, with each stop block x arranged in a straight line; a stop block y fixedly connected to the inner wall of the central tube, with each stop block y arranged in a spiral line; a mounting ring rotatably connected to the outer wall of the central tube; a magnetic block fixedly connected to the mounting ring, the magnetic block being able to magnetically attract the fixing block; a motor y fixedly connected to the frame; a gear fixedly connected to the output end of the motor y; and a convex tooth fixedly connected to the mounting ring, the gear meshing with the convex tooth.

[0008] The present invention also provides an oven, including the hot air circulation heating fan as described above, and further including: a casing, a control panel on the casing, the control panel controlling the start and stop of the heating element and motor x, a sensing device inside the suction device that can sense the soot contained in the airflow it draws and feed back to the control panel; a door cover rotatably connected to the casing; an inner liner fixedly connected to the casing, a central tube fixedly connected to the inner liner, a frame fixedly connected to the outside of the inner liner, and a suction device fixedly connected to the inner liner; and branch pipes fixedly connected to the inner liner, the branch pipes being evenly distributed on each inner side wall of the inner liner and communicating with the central tube.

[0009] More preferably, the oven further includes: a connecting shell y fixedly connected to the casing, the connecting shell y communicating with the frame shell; a rotating plate x rotatably connected to the connecting shell y; and a torsion spring x fixedly connected between the rotating plate x and the connecting shell y.

[0010] More preferably, the oven further includes: a connecting shell z fixedly connected to the inner liner, the connecting shell z communicating with the outside; a rotating plate y rotatably connected to the connecting shell z; and a torsion spring y fixedly connected between the rotating plate y and the connecting shell z.

[0011] More preferably, the oven further includes: a fixed frame fixedly connected to the casing; a filter element fixedly connected to the fixed frame for purifying soot, the filter element communicating with the central tube; a mounting bracket fixedly connected inside the central tube; and an inclined plate rotatably connected to the mounting bracket, the rotation of the inclined plate controlling the opening and closing of the central tube.

[0012] More preferably, the oven further includes: a torsion spring z fixedly connected between the inclined plate and the mounting bracket; and an electromagnetic block fixedly connected to the central tube, the electromagnetic block being controlled by the control panel to start and stop.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention uses a heat circulation heating fan to reduce energy consumption and achieve energy saving by circulating heat. The invention uses a sensing device in the suction device in the circulating airflow to detect charred smoke. When charred food is detected, the operating mode of the invention can be switched, stopping the heating airflow and the circulating airflow, and expelling the airflow containing charred smoke. This reduces abnormal energy consumption and the troublesome cleaning work caused by the accumulation of charred smoke, thereby improving the effectiveness of the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance of the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0017] Figure 3This is a schematic diagram of the internal structure from another perspective of the present invention.

[0018] Figure 4 This is a schematic diagram of the connection structure of the central tube, fan blades, and suction device in this invention.

[0019] Figure 5 This is a schematic diagram of the connection structure between the fan blades and the heating element in this invention.

[0020] Figure 6 This is a schematic diagram of the heating element in this invention.

[0021] Figure 7 This is a schematic diagram of the connection structure between the fixed block and the electromagnetic block in this invention.

[0022] Figure 8 This is a schematic diagram showing the positional structure of block x and block y in this invention.

[0023] Figure 9 This is a separation diagram of the connection structure between the connecting shell z and the rotating plate y in this invention.

[0024] Figure 10 This is a schematic diagram of the connection structure between the filter element and the inclined plate in this invention.

[0025] Figure 11 This is a schematic diagram of the structure of the inclined plate after it has been unfolded in this invention.

[0026] The labels in the attached diagram are as follows: 1: Chassis; 2: Door cover; 3: Inner liner; 4: Partition plate; 5: Central tube; 6: Branch tube; 7: Frame shell; 8: Motor x; 9: Fan blade; 10: Heating element; 1001: Through-hole; 11: Wire; 12: Separator mesh; 13: Suction device; 14: Connecting shell x; 15: Connecting tube; 16: Connecting shell y; 17: Rotating plate x; 18: Torsion spring x; 19: Fixing block; 20: Abutment block x; 21: Abutment block y; 22: Mounting ring; 23: Magnetic block; 24: Motor y; 25: Gear; 26: Protruding tooth; 27: Connecting shell z; 28: Rotating plate y; 29: Torsion spring y; 30: Fixing frame; 31: Filter element; 32: Mounting bracket; 33: Inclined plate; 34: Torsion spring z; 35: Electromagnetic block. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example: A hot air circulating heating fan and oven, such as Figures 1-3As shown, the oven includes: a casing 1, with a control panel at the front for operating the oven; a rotating door 2 at the front of the casing 1; an inner cavity 3 fixedly installed inside the casing 1, where food is placed for baking; a sliding partition 4 inside the inner cavity 3 for placing food, the partition 4 having two layers that separates the space inside the inner cavity 3, and the partition 4 being freely removable to allow for adjustable space division within the inner cavity 3; and a hot air circulation fan positioned between the casing 1 and the inner cavity 3, supplying circulating hot air into the inner cavity 3 to even out the temperature while saving energy.

[0029] like Figures 4-6 As shown, the heat circulation heating fan includes: a central pipe 5 fixedly installed at the rear top of the inner liner 3; branch pipes 6 fixedly installed inside the inner liner 3, communicating with the central pipe 5, and the branch pipes 6 are evenly arranged on the upper and lower inner top surfaces and the rear inner side surface of the inner liner 3, so that hot air can be evenly distributed into various positions inside the inner liner 3 through the branch pipes 6; a frame shell 7 fixedly installed on the left outer side wall of the inner liner 3, the frame shell 7 being connected to the left end of the central pipe 5 and communicating with the central pipe 5; a motor x8 fixedly installed on the frame shell 7, the motor x8 being controlled by a control panel; a fan blade 9 rotatably installed on the frame shell 7, the fan blade 9 being fixed to the output end of the motor x8, the fan blade 9 being driven by the motor x8 to rotate and generate airflow; and a heating element 10 rotatably installed inside the central pipe 5. The heating element 10 has a through-hole 1001. When the airflow generated by the fan blade 9 passes through the through-hole 1001 and passes through the heating element 10, it is heated into hot airflow. There are ten heating elements 10 in total. The ten heating elements 10 are staggered so that the through-holes 1001 are staggered and form a spiral channel in the whole, so as to increase the time for the airflow to pass through the heating element 10 and improve the heating effect of the heating element 10 on the airflow. The wire 11 is fixedly installed on the heating element 10. The wire 11 is used to supply power to the heating element 10. The energized heating element 10 can generate heat. The power supply of the wire 11 is controlled by the control panel. The partition net 12 is fixedly installed between the fan blade 9 and the heating element 10 to separate and protect the two.

[0030] like Figures 4-5 As shown, the heat circulation heating fan also includes: a suction device 13 fixedly installed on the left side wall of the inner liner 3, which can draw airflow from the inner liner 3. The suction device 13 is equipped with a sensing and control device that can sense the soot contained in the airflow it draws and feed it back to the control panel; a connecting shell x14 fixedly installed on the left outer side wall of the inner liner 3, which communicates with the frame shell 7; and a connecting pipe 15 fixedly installed between the connecting shell x14 and the suction device 13, which connects the connecting shell x14 and the suction device 13 to return the airflow drawn by the suction device 13 to the frame shell 7, thereby realizing airflow circulation.

[0031] like Figures 6-8As shown, the heat circulation heating fan also includes: a fixing block 19 fixedly installed on each heating element 10; ten abutment blocks x20 fixedly installed on the inner wall of the central tube 5, each abutment block x20 corresponding to the position of each fixing block 19, the ten abutment blocks x20 being arranged in a straight line, each fixing block 19 being able to be rotated by the heating element 10 to abut against the abutment block x20, and when abutting, the channel formed by the through hole 1001 of each heating element 10 is a straight channel; and ten abutment blocks y21 fixedly installed on the inner wall of the central tube 5, each abutment block y21 corresponding to the position of each fixing block 19, the ten abutment blocks y21 being arranged in a spiral shape, each fixing block 19 being able to be rotated by the heating element 10 to abut against the abutment block y21, and when abutting, the channel formed by the through hole 1001 of each heating element 10 is a spiral channel.

[0032] like Figures 6-8 As shown, the heat circulation heating fan also includes: a mounting ring 22 rotatably mounted outside the central tube 5; a magnetic block 23 fixedly mounted on the mounting ring 22, which can magnetically attract the fixed block 19, so that when the magnetic block 23 moves, it can drive the fixed block 19 to move, thereby controlling the rotation of the heating element 10; a motor y24 fixedly mounted on the frame 7, which is controlled by the control panel; a gear 25 fixedly mounted on the output end of the motor y24; and a tooth 26 fixedly mounted on the mounting ring 22, which is distributed along the outer edge of the mounting ring 22. The gear 25 meshes with the tooth 26, and when the gear 25 rotates, it controls the rotation of the mounting ring 22 through the tooth 26, thereby driving the electromagnetic block 35 to move.

[0033] like Figures 4-5 As shown, it also includes: a connecting shell y16 fixedly installed on the top of the chassis 1, the connecting shell y16 being open to the outside, and the airflow drawn in by the fan blade 9 when rotating will enter the central tube 5 from the outside through the connecting shell y16; a rotating plate x17 rotatably installed on the connecting shell y16, the rotating plate x17 being arranged in a row of eight, the rotating plate x17 closing the connecting shell y16, and opening the connecting shell y16 after rotation; and a torsion spring x18 fixedly installed between the rotating plate x17 and the connecting shell y16, the torsion spring x18 enabling the rotating plate x17 to return to its original position after rotation, the torsion spring x18 being sleeved on the shaft of the rotating plate x17.

[0034] like Figure 9As shown, it also includes: a connecting shell z27 fixedly installed on the right side wall of the inner liner 3, the connecting shell z27 communicating with the outside, allowing the inner liner 3 to directly receive external airflow; a rotating plate y28 rotatably installed on the connecting shell z27, the rotating plate y28 is arranged in a row of five, the rotating plate y28 closes the connecting shell z27, and opens the connecting shell z27 after rotation; a torsion spring y29 fixedly installed between the rotating plate y28 and the connecting shell z27, the torsion spring y29 allows the rotating plate y28 to return to its original position after rotation, the torsion spring y29 is sleeved on the shaft of the rotating plate y28.

[0035] like Figures 9-11 As shown, it also includes: a fixed frame 30 fixedly installed on the right side of the casing 1; a filter element 31 fixedly installed on the fixed frame 30, the filter element 31 being connected to the central tube 5, the central tube 5 passing soot into the filter element 31 for purification before discharge; a mounting bracket 32 ​​fixedly installed inside the right end of the central tube 5; a rotatable inclined plate 33 installed on the mounting bracket 32, the inclined plate 33 closing the right end of the central tube 5, and when the inclined plate 33 tilts after rotation, it will open the right end of the central tube 5 to discharge the airflow containing soot to the filter element 31 and accelerate the airflow speed; a torsion spring z34 fixedly installed between the inclined plate 33 and the mounting bracket 32, the torsion spring z34 enabling the inclined plate 33 to self-reset after rotation, the torsion spring z34 being sleeved on the shaft of the inclined plate 33; and an electromagnetic block 35 fixedly installed on the central tube 5, the electromagnetic block 35 being controlled by the control panel to be magnetized, the electromagnetic block 35 being magnetized to attract the inclined plate 33 and control the rotation of the inclined plate 33.

[0036] Using this oven:

[0037] Open the door cover 2, first adjust the position of the shelf 4 according to the volume of the food to be baked, then place the food on the shelf 4, close the door cover 2, and then use the control panel to start the oven and set the required baking time and baking temperature.

[0038] The hot air circulation fan starts, the heating element 10 is energized to generate heat, the motor x8 drives the fan blade 9 to rotate, drawing air from the outside and supplying it into the central tube 5. The rotating plate x17 is rotated by the airflow to open the connecting shell y16, and the torsion spring x18 is twisted. The airflow entering the central tube 5 passes through the heating element 10 and is heated to the set temperature. Then, it is evenly distributed into the inner liner 3 through the branch pipe 6 to bake the food. When both the inner liner 3 and the central tube 5 are filled with airflow, the suction device 13 starts, drawing the airflow from the inner liner 3 towards the frame shell 7, while the fan blade 9 guides it into the central tube. The air is reheated inside the oven and then circulated back into the inner liner 3, thus forming a heat cycle. This allows the oven to recover excess heat and save energy. When the suction device 13 supplies airflow into the inner liner 3, the fan blades 9 no longer need to obtain a large amount of airflow from the outside. Therefore, the airflow passing through the rotating plate x17 decreases, and the force on the rotating plate x17 decreases. The torsion spring x18 can then reset the rotating plate x17 and close the connecting shell y16. Since the airflow no longer needs to be obtained from the outside, the airflow inside the oven enters circulation and is not disturbed by the external environment. Thus, the circulation of hot airflow tends to be stable.

[0039] When food is accidentally burned while using this oven, the circulating hot air will carry the smoke through the suction device 13. The suction device 13 will detect this and immediately: ① The sensing device will cut off the power to the heating element 10, stop the heating airflow, and prevent the food from burning further. At the same time, the hot air circulation fan will stop uniformly controlling the temperature, thereby reducing unnecessary energy consumption; ② The sensing device will control the motor x8 to start, control the magnetic block 23 to rotate, guide the fixing block 19 to abut the block x20, rotate the heating element 10 so that its upper opening 1001 is aligned, and the airflow containing the smoke can quickly pass through the heating element 10 and move towards the filter element 31; ③ The sensing device will control the electromagnetic block 35 to attract the inclined plate 33, causing the inclined plate 33 to tilt and open the central tube 5, so that the filter element 31 can safely process the smoke in the airflow and discharge it. At the same time, the inclined plate 33 will accelerate the airflow towards the filter element 31, so that the filter element 31 can better capture the smoke in the airflow and improve the processing effect of the filter element 31.

[0040] When a certain amount of airflow is discharged from the inner liner 3, the air pressure inside the inner liner 3 is lower than that outside. Then, the rotating plate y28 can be rotated under the action of the air pressure difference, and the torsion spring y29 twists, allowing airflow to enter the inner liner 3 and preventing the door cover 2 from being unable to open due to negative pressure inside the inner liner 3. When the air pressure difference in the inner liner 3 is restored, the torsion spring y29 rotates back to the rotating plate y28, so that the inner liner 3 returns to the closed state.

[0041] In summary, when food burns during use, the oven automatically stops heating and removes the burnt smoke, preventing energy waste caused by the continued increase in energy consumption and reducing cleaning issues. Once the food is no longer being baked and the burnt smoke inside the oven has been completely removed, motor x8 shuts off, fan blade 9 stops rotating, and the oven stops operating. Users can reset the oven using the reset function on the control panel when handling food, so that it can be used again later.

[0042] The recovery function includes: controlling the electromagnetic block 35 to close, the torsion spring z34 controlling the inclined plate 33 to rotate back to the right end of the closed central tube 5, so that when the oven is used again, the hot air flow in the central tube 5 can enter the branch tube 6; and controlling the motor y24 to start and reverse, so that the magnetic block 23 reverses, so that all the heating elements 10 are rotated back to the spiral shape of the through-hole 1001.

[0043] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A hot air circulation heating fan, characterized in that, include: A central tube (5); a frame (7) communicating with the central tube (5); a motor x (8) fixedly connected to the frame (7); a fan blade (9) rotatably connected to the frame (7), the fan blade (9) rotating will generate airflow, the fan blade (9) is fixed to the output end of the motor x (8); a heating element (10) set inside the central tube (5), the heating element (10) generates heat when energized, the heating element (10) has a through-hole (1001) for airflow to pass through, the airflow is heated by the heating element (10) through the through-hole (1001), heating The heating element (10) is provided with at least three elements; a suction device (13) communicates with the frame (7), and the suction device (13) draws airflow back into the frame (7); the heating element (10) can be configured in two states, one is to align the through-holes (1001) to form a straight channel, and the other is to misalign the through-holes (1001) to form a spiral channel. The heating element (10) rotates to switch between these two states; it also includes: a fixing block (19) fixedly connected to each heating element (10); and a fixing block (5) fixedly connected to the central tube (5). The inner wall of the central tube (5) has abutment blocks x (20), each abutment block x (20) is arranged in a straight line. When the fixed block (19) abuts against the abutment block x (20), the channel formed by the through hole (1001) of each heating element (10) is a straight channel; the inner wall of the central tube (5) has abutment blocks y (21), each abutment block y (21) is arranged in a spiral. When the fixed block (19) abuts against the abutment block y (21), the channel formed by the through hole (1001) of each heating element (10) is a spiral channel; the outer wall of the central tube (5) is rotatably connected to the central tube (5). Mounting ring (22) on the side wall; magnetic block (23) fixedly connected to mounting ring (22), magnetic block (23) can magnetically attract fixed block (19), so that the movement of magnetic block (23) can attract the movement of fixed block (19); motor y (24) fixedly connected to frame shell (7); gear (25) fixedly connected to the output end of motor y (24); tooth (26) fixedly connected to mounting ring (22), gear (25) meshes with tooth (26), so that gear (25) can control the rotation of mounting ring (22).

2. An oven, characterized in that, The hot air circulating heating fan according to claim 1 further includes: a casing (1), a control panel on the casing (1), the control panel controlling the start and stop of the heating element (10) and the motor x (8), a sensing device inside the suction device (13), the sensing device being able to sense the soot contained in the airflow it draws and feed it back to the control panel; a door cover (2) rotatably connected to the casing (1); an inner liner (3) fixedly connected to the casing (1), a central tube (5) fixedly connected to the inner liner (3), a frame shell (7) fixedly connected to the outside of the inner liner (3), and a suction device (13) fixedly connected to the inner liner (3); a branch pipe (6) fixedly connected to the inner liner (3), the branch pipe (6) being evenly distributed on each inner side wall of the inner liner (3), and the branch pipe (6) communicating with the central tube (5).

3. The oven according to claim 2, characterized in that, Also includes: A connecting shell y (16) is fixedly connected to the chassis (1), and the connecting shell y (16) communicates with the frame shell (7); a rotating plate x (17) is rotatably connected to the connecting shell y (16), and the rotating plate x (17) controls the opening and closing of the connecting shell y (16); a torsion spring x (18) is fixedly connected between the rotating plate x (17) and the connecting shell y (16).

4. The oven according to claim 3, characterized in that, Also includes: A connecting shell z (27) is fixedly connected to the inner liner (3), and the connecting shell z (27) is in communication with the outside; a rotating plate y (28) is rotatably connected to the connecting shell z (27), and the rotating plate y (28) controls the opening and closing of the connecting shell z (27); a torsion spring y (29) is fixedly connected between the rotating plate y (28) and the connecting shell z (27).

5. The oven according to claim 4, characterized in that, Also includes: A fixed frame (30) is fixedly connected to the chassis (1); a filter element (31) for purifying soot is fixedly connected to the fixed frame (30), and the filter element (31) is connected to the central tube (5); a mounting bracket (32) is fixedly connected inside the central tube (5); a rotatable plate (33) is rotatably connected to the mounting bracket (32), and the rotatable plate (33) controls the opening and closing of the central tube (5).

6. The oven according to claim 5, characterized in that, Also includes: A torsion spring z (34) is fixedly connected between the inclined plate (33) and the mounting bracket (32); an electromagnetic block (35) is fixedly connected to the central tube (5). The electromagnetic block (35) is controlled to start and stop by the control panel. When the electromagnetic block (35) is magnetic, it can attract the inclined plate (33) and control the rotation of the inclined plate (33).

Images