Smokeless electric oven with detachable rotating cover

Abstract

The smokeless electric oven with the detachable rotating cover comprises an oven shell and an oven cover, when the oven cover needs to be installed on the oven shell, the oven cover is vertically placed to form a vertical angle with the oven shell, then two transverse flat shafts of the oven cover are aligned with vertical openings of installation bases on the oven shell, and the installation bases are arranged on the oven shell. And then, the oven cover is rotated downwards to the horizontal direction relative to the oven shell, so that the oven cover can be quickly mounted on the oven shell. When the oven cover needs to be disassembled and the oven cover is rotated to form a 90-degree angle with the oven shell, the transverse flat shaft is also rotated by 90 degrees, the height direction of the transverse flat shaft is rotated to the horizontal direction, and the height of the transverse flat shaft is smaller than the width of the vertical opening, so that the transverse flat shaft is not limited by the vertical opening any more; and the oven cover can be quickly separated from the oven shell by upwards pulling the oven cover. The device is high in assembly efficiency and convenient to clean.

Description

Technical Field

[0001] This utility model relates to the field of barbecue equipment, and in particular to a smokeless electric grill with a detachable rotating cover. Background Technology

[0002] Electric grills can grill and cook food, and have advantages such as being clean and hygienic, small in size, and safe to use. They are becoming increasingly popular in the catering industry and in households.

[0003] Chinese patent application CN104921616B discloses a portable smokeless electric grill, comprising a grill body 1, a top cover 2, an electric heating element 5, and a conical oil collection box 7 located at the lower end of the heating element 53. The oil collection box 7 has an oil outlet 71 in the middle of its bottom wall and a smoke outlet 72 on its upper side wall. The generated fumes are drawn into a fume extraction device 91 through the smoke outlet 72 and then treated by a fume purification device 92. This invention features a novel structure, portability, easy cleaning, energy saving, environmental friendliness, and smokeless hygiene. The aforementioned patent has the following problems: 1. The oven body 1 is a one-piece molded shell, forming a deep storage cavity inside. The top cover 2, electric heating element device 5, converter 51, control panel 52, heating element 53, baking tray 6, oil collection box 7, oil collection tray 8, fume extraction device 91, and oil fume purification device 92 all need to be placed inside the oven body 1. This makes it inconvenient to assemble these components into the oven body during installation, affecting assembly efficiency and consequently production efficiency. 2. Because the fume extraction device has a ventilation function, oil fumes are sucked into the shell during grilling, and oil stains adhere to the inner wall of the shell. With increased use, the oil stains accumulate and flow down the inner wall to the bottom wall of the shell, making cleaning difficult. 3. The top cover is inserted horizontally into the oven body. It needs to be removed during grilling and replaced after grilling. This operation is inconvenient and easily damages the cover.

[0004] The utility model patent with publication number CN217090424 U is the applicant's prior patent. This patent discloses an electric oven with an oil filter screen. The patent includes a bottom shell 1, and an installation cavity 11 is provided inside the bottom shell 1. The installation cavity 11 is arranged from bottom to top with a heat insulation plate 4, a heating element 3, and a baking tray 2. An oil filter screen 5 and a fan 6 are also provided inside the installation cavity 11. When in use, the fan works and generates suction, so that the oil fumes on the top of the baking tray enter the installation cavity through the air inlet, pass through the oil filter screen, and are blown out from the air outlet. When the oil fumes pass through the oil filter screen, the grease adheres to the oil filter screen. The fumes are blown out from the air outlet under the action of the fan and start the next cycle. Grease, dirt, etc. are all absorbed by the oil filter screen and will not be absorbed on the side wall of the installation cavity, nor will they flow to the bottom wall of the installation cavity. Furthermore, the oil filter screen can be replaced after long-term use to maintain the oil fume separation effect of the oil filter screen, effectively preventing oil stains from contaminating the installation cavity and improving the convenience of cleaning for users. The utility model patent CN217090424 U has the following problems: 1. The bottom shell 1 is a one-piece molded shell, forming a deep mounting cavity 11. The heat insulation plate 4, heating element 3, baking tray 2, oil filter 5, fan 6, and oil collection box 8 all need to be installed in the mounting cavity 11. Because the bottom shell 1 is a single piece, it is inconvenient to assemble these components into the oven body, affecting assembly efficiency and consequently production efficiency. 2. Since the channel formed between the oil filter 5 and the heat insulation plate 4 is a straight channel, during grilling, the fumes are quickly drawn into the bottom shell 1 by the fan 6. The fumes remain on the oil filter 5 for a short time, affecting its adsorption effect. As usage time increases, the accumulated oil will flow down the inner wall of the shell to the bottom wall, making cleaning difficult. 3. The top cover is directly placed on the oven body. The cover needs to be removed during grilling and replaced after grilling. It is very inconvenient to operate and can easily damage the lid. Summary of the Invention

[0005] To address the aforementioned problems, this utility model discloses a split-type multi-functional smokeless electric oven with high assembly efficiency, long contact time between oil fumes and the oil filter components, and ideal oil extraction effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A smokeless electric oven with a detachable rotating cover includes an oven shell 1 and an oven cover 2. Inside the oven shell 1, from bottom to top, are arranged a fan 3, a heat insulation plate 4, and an electrically controlled heating plate 5. The heat insulation plate 4 has a receiving cavity 40. The electrically controlled heating plate 5 includes a heating tube 51 and an electrical control box 52 and an auxiliary mounting box 53 connecting the two ends of the heating tube 51. After the electrical control box 52 and the auxiliary mounting box 53 are installed on the oven shell 1, the heating tube 51 is placed inside the receiving cavity 40. An air inlet 41 and an air outlet 42 are respectively provided on the two side walls of the receiving cavity 40. An oil filter assembly 6 and an oil receiving tray 7 are also provided inside the oven shell 1.

[0008] The oven cover 2 is detachably and rotatably mounted on the oven shell 1. Two protruding mounting seats 96, each consisting of a vertical support 961 and a vertical baffle 962 connected together, are provided on the top surface of the oven shell 1 near the air inlet 41. The vertical support 961 includes a top insertion surface, an inner vertical closing surface, and an outer vertical movable support surface. An arc-shaped transverse groove 963 is formed in the vertical movable support surface within the vertical support 961, and a groove corresponding to the arc shape is formed on the insertion surface. A vertical opening 964 communicating with the transverse groove 963, the width of the vertical opening 964 being smaller than the width of the arc-shaped transverse groove 963, and a vertically arranged arc-shaped snap-fit ​​surface 965 offset from the arc-shaped transverse groove 963 on the vertical baffle 962; the oven cover 2 includes a rotating cover body 21, with two opposing rotating support arms 22 on one side of the rotating cover body 21, and a vertical rotating surface 23 on the side of the rotating support arm 22 opposite to the other rotating support arm, and a surface 23 on the outer side of the rotating support arm 22 that is connected to the vertical rotating surface 23. A transverse flat shaft 25 protrudes laterally from the vertical rotating surface 23 on the vertical rotating surface 24. The transverse flat shaft 25 is separated from the arc-shaped rotating surface 24 by a certain distance. The width of the transverse flat shaft 25 is greater than its height, and the height of the transverse flat shaft 25 is less than the width of the vertical opening 964. The width of the transverse flat shaft 25 is greater than the width of the vertical opening 964. The transverse flat shaft 25 can be inserted into the vertical opening 964 and enter the arc-shaped transverse groove 963 when the oven lid 2 is vertically upright. After the oven lid 2 rotates from the vertical direction, it is always restricted within the arc-shaped horizontal groove 963 by the vertical opening 964. An air inlet opening 26 communicating with the air inlet 41 is formed between the rotating lid body 21 and the two rotating support arms 22. An air outlet 27 communicating with the air outlet 42 is provided on the other side of the rotating lid body 21. A vertical baffle plate 28 separating the air inlet opening 26 and the air outlet 27 is provided at the bottom of the rotating lid body 21. A handle 29 is provided on the top surface of the rotating lid body 21 next to the air outlet 27.

[0009] To better realize this utility model, the preferred technical solution is as follows: the oven shell 1 includes a base 8 and a hollow central support 9 that can be detachably installed on the base 8; the fan 3 and the oil receiving tray 7 are arranged inside the base 8; the oven cover 2, the heat insulation tray 4, and the electric heating plate 5 are arranged on the central support 9; and a baking tray 501 with an oil leakage port or a cooking tray 502 with a closed bottom is provided on the heating tube 51.

[0010] The base 8 has an annular outer wall 80. An annular insert plate 81 is provided at the top of the annular outer wall of the base 8. An inner annular locking platform 811 and an outer annular locking platform 812 with a height lower than the annular insert plate 81 are provided on the inner and outer sides of the annular insert plate 81, respectively. A front vertical locking plate 82 and a rear vertical locking plate 83 connecting the annular outer wall of the base 8 are provided on the front and rear sides of the interior of the base 8, respectively. A positioning sleeve 84 is provided on the base 8 between the front vertical locking plate 82 and the annular outer wall 80 of the base. An annular locking notch 841 is provided on the inner wall of the top of the positioning sleeve 84.

[0011] The middle support 9 is provided with an annular outer wall 90. The bottom end face of the annular outer wall 90 is provided with an annular clamping groove 91 for inserting an annular plug-in piece 81 for circumferential fixation. At the bottom of the middle support 9, there are front strip slots 92 and rear strip slots 93 for inserting a front vertical snap-fit ​​plate 82 and a rear vertical snap-fit ​​plate 83, respectively. At the top front side of the annular outer wall 90 of the middle support, there is a notch 901 for placing an electrical control box 52. At the bottom front side of the middle support 9, there is a protruding sleeve 94 that communicates with the notch 901. The lower end of the protruding sleeve 94 is inserted into the annular snap-fit ​​notch 841 of the positioning sleeve 84. When the annular plug-in piece 81 is inserted into the annular clamping groove 91, the protruding sleeve 94 is inserted downward into the positioning sleeve 84, while the front vertical snap-fit ​​plate 82 and the rear vertical snap-fit ​​plate 83 are inserted upward into the front strip slot 92 and the rear strip slot 93, respectively.

[0012] An upper slot 95 is provided on the upper end of one side of the annular outer wall 90 of the middle support 9. Several locking blocks 85 are provided on the base 8, which are offset inward from the upper slot 95. When the two ends of the oil filter assembly 6 are respectively locked in the upper slot 95 and the locking blocks 85, it is placed at an angle between the base 8 and the middle support 9. The oil filter assembly 6 and the side wall of the heat insulation plate 4 form an oil fume buffer channel 10 that is wider at the top and narrower at the bottom. The oil fume buffer channel 10 is connected to the air inlet 41.

[0013] To better realize this utility model, a further preferred technical solution is as follows: an installation hole 211 is provided on the rotating cover body 21 between the air inlet opening 26 and the air outlet opening 27, an annular installation step 212 is provided in the installation hole 211, a transparent glass plate 210 is fixed in the annular installation step 212, a sealing ring 213 is provided at the contact point between the transparent glass plate 210 and the installation hole, and the handle 29 is fixed on the surface of the transparent glass plate 210.

[0014] To better realize this utility model, a further preferred technical solution is as follows: At least two protruding buffer seats 214 are provided at the bottom of the rotating cover body 21 located at one end of the handle 29. An embedding groove 215 is provided in the buffer seat 214, with the opening of the embedding groove 215 facing downward. A slot 216 communicating with the embedding groove 215 is provided on the side wall of the embedding groove 215. A conical elastic block 217 with a thicker upper part and a thinner lower part is installed in the embedding groove 215. A locking head 218 is provided on the side wall of the conical elastic block 217, which can be locked into the slot 216 to fix the conical elastic block 217 in the embedding groove 215. The height of the conical elastic block 217 is greater than the depth of the embedding groove 215. When the oven cover 2 is closed on the middle support 9, the bottom of the conical elastic block 217 is locked on the annular outer wall 90 of the middle support 9.

[0015] To better realize this utility model, a further preferred technical solution is as follows: a fan mounting base 86 for mounting the fan 3 is provided in the base 8. The fan mounting base 86 includes a first through plate seat 861 and a second through plate seat 862 that pass through the front vertical snap-fit ​​plate 82 and the rear vertical snap-fit ​​plate 83, respectively. A pair of lower insertion holes 860 are provided on the first through plate seat 861, a pair of middle insertion holes 900 opposite to the lower insertion holes 860 are provided on the middle support 9, and a pair of upper insertion holes 520 are provided on the electrical control box 52. A fan drive circuit board 31 is fixed on the fan 3, and a pair of electrode pins 32 are fixed on the fan drive circuit board 31. The electrode pins 32 pass through the lower insertion holes 860, the middle insertion holes 900, and the upper insertion holes 520 in sequence and are connected to the power supply in the electrical control box 52.

[0016] To better realize this utility model, a further preferred technical solution is as follows: A fan mounting port communicating with the fan mounting base 86 is provided at the bottom of the base 8. A fan protective cover 30 is fastened to the fan mounting port. Several horizontal slots 801 are provided on one side wall of the fan mounting port, and several vertical slots 802 are provided on the other side wall of the fan mounting port. A horizontal locking platform 803 is provided on one side of each vertical slot 802. A horizontal insert 301 capable of being horizontally inserted into the horizontal slot is provided on one side of the fan protective cover 30. An opening is provided on the other side of the fan protective cover 30. The U-shaped elastic hook 302 facing downwards includes a vertical fixing post 303 fixed to the top surface of the fan protective cover 30 and an elastic arm 304 connected to the vertical fixing post 303 in a U-shape. The length of the U-shaped elastic arm 304 is greater than the length of the vertical fixing post 303. A protruding hook 305 is provided on the outer wall of the elastic arm 304. The bottom of the protruding hook 305 is provided with a horizontal locking surface that engages with the transverse locking platform 803. The outer side of the protruding hook 305 is provided with a guide slope that facilitates the protruding hook 305 to move upwards over the transverse locking platform 803.

[0017] To better realize this utility model, a further preferred technical solution is: the lower end of the oil filter screen assembly 6 is provided with a strip-shaped card plate 61 that is stuck on the card block 85. The thickness of the strip-shaped card plate 61 is less than the thickness of the oil filter screen assembly 6. The strip-shaped card plate 61 is set perpendicular to the bottom surface of the oil filter screen assembly 6. A number of reinforcing ribs 62 are provided between the strip-shaped card plate 61 and the bottom surface of the oil filter screen assembly 6.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] In this invention, during product manufacturing and assembly, the fan, oil tray, and oil filter assembly are mounted on the base, and the middle support is placed on top of the base. The annular insert piece is inserted into the annular clamping groove to axially fix the middle support and the base during assembly. Simultaneously, as the annular insert piece of the base is inserted upwards into the annular clamping groove of the middle support, the protruding sleeve of the middle support is inserted downwards into the positioning sleeve of the base. The front and rear vertical locking plates of the base are respectively inserted upwards into the front and rear strip slots of the middle support, enabling rapid assembly with multiple locking mechanisms between the base and the middle support. Then, a heat insulation plate, an electrically controlled heating plate, a baking tray or cooking tray, and an oven lid are installed on the middle support. This design eliminates the need for a single-piece bottom shell in existing technologies, improving assembly efficiency, significantly enhancing the product's structural rationality, and increasing production efficiency by more than three times. Furthermore, when cleaning is required, the product can be quickly disassembled for thorough cleaning, avoiding the space limitations of disassembly parts and incomplete cleaning of the internal components in existing technologies.

[0020] 2. Because the oil filter assembly and the side wall of the heat insulation plate form an oil fume buffer channel that is wider at the top and narrower at the bottom, when the oil fume enters from the air inlet and passes through the oil fume buffer channel, the pressure will gradually increase, slowing down the downward speed of the oil fume. This increases the contact time between the oil fume and the oil filter assembly, thus improving the oil absorption effect.

[0021] 3. After rotating the oven lid 90 degrees relative to the middle support, pull the oven lid upward to quickly separate it from the middle support. Align the oven lid vertically with the mounting bracket on the middle support to quickly install the oven lid. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention viewed from above.

[0023] Figure 2 This is a perspective view of the oven lid and oven shell of this utility model after separation;

[0024] Figure 3 for Figure 2 Enlarged view of a portion at point A;

[0025] Figure 4 This is an exploded view of the present invention, including the baking tray and the cooking tray.

[0026] Figure 5 This is an exploded view of the present invention after removing the baking tray, cooking tray, and oven lid;

[0027] Figure 6 This is a planar cross-sectional view cut along the width direction when using a baking pan in this utility model;

[0028] Figure 7 This is a three-dimensional cross-sectional view of the baking pan cut along its length in this utility model.

[0029] Figure 8 for Figure 7 A magnified view of section B;

[0030] Figure 9 This is a perspective view of the central support of this utility model from the front.

[0031] Figure 10 This is a perspective view of the central support of this utility model from the back.

[0032] Figure 11 This is a perspective view of the base of this utility model from the front.

[0033] Figure 12 This is a perspective view of the base of this utility model from the back.

[0034] Figure 13 This is a perspective view of the oven lid of this utility model from the front.

[0035] Figure 14 This is a perspective view of the oven lid of this utility model from the back.

[0036] Figure 15 for Figure 13 A magnified view of a portion at point C;

[0037] Figure 16 for Figure 14 A magnified view of a portion at point D;

[0038] Figure 17 This is a bottom view of the oven lid of this utility model;

[0039] Figure 18 for Figure 17 AA cross-section view;

[0040] Figure 19 for Figure 18 A magnified view of a portion at point E;

[0041] Figure 20 This is an exploded view of the oven lid of this utility model;

[0042] Figure 21 for Figure 20 A magnified view of a portion at point F;

[0043] Figure 22 This is a structural diagram showing the fit between the fan protective cover and the base of this utility model;

[0044] Figure 23 for Figure 22 A magnified view of a portion of point G;

[0045] Figure 24 This is a perspective view of the fan protective cover of this utility model;

[0046] Figure 25 This is a schematic diagram of the horizontal insert and U-shaped elastic hook of the fan protective cover of this utility model.

[0047] Figure 26 This is a perspective view of the oil filter screen assembly of this utility model. Detailed Implementation

[0048] To gain a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of this disclosure.

[0049] The following is in conjunction with the appendix Figure 1-26 The present invention will be further described in detail with reference to specific embodiments:

[0050] This utility model relates to a smokeless electric oven with a detachable rotating cover, comprising an oven shell 1 and an oven cover 2. Inside the oven shell 1, from bottom to top, are arranged a fan 3, a heat insulation plate 4, and an electrically controlled heating plate 5. The heat insulation plate 4 has a receiving cavity 40. The electrically controlled heating plate 5 includes a heating tube 51 and an electrical control box 52 and an auxiliary mounting box 53 connecting the two ends of the heating tube 51. After the electrical control box 52 and the auxiliary mounting box 53 are installed on the oven shell 1, the heating tube 51 is positioned within the receiving cavity 40. An air inlet 41 and an air outlet 42 are respectively provided on the side walls of the receiving cavity 40. An oil filter assembly 6 and an oil receiving tray 7 are also provided inside the oven shell 1. The above are all prior art. The utility model patent CN217090424 U in the background art is the applicant's prior patent and also discloses these contents, which will not be described in detail here.

[0051] See appendix Figure 3-12 The oven shell 1 includes a base 8, a hollow central support 9 detachably mounted on the base 8, a baking tray 501 with an oil drain, and a bottom-sealed cooking tray 502. The fan 3 and the oil collection tray 7 are disposed inside the base 8, and the oven cover 2, the heat insulation plate 4, and the electrically controlled heating plate 5 are disposed on the central support 9. In use, the baking tray 501 with an oil drain is placed on the heating tube 51 for grilling, or the bottom-sealed cooking tray 502 is placed on the heating tube 51 for boiling or frying.

[0052] To further illustrate how the base 8 and the intermediate support 9 are quickly and securely connected, see Appendix. Figure 11-12 The base 8 is provided with an annular outer wall 80. An annular insert plate 81 is provided at the top of the annular outer wall of the base 8. An inner annular locking platform 811 and an outer annular locking platform 812 with a height lower than the annular insert plate 81 are provided on the inner and outer sides of the annular insert plate 81, respectively. A front vertical locking plate 82 and a rear vertical locking plate 83 connecting the annular outer wall of the base 8 are provided on the front and rear sides of the interior of the base 8, respectively. A positioning sleeve 84 is provided on the base 8 between the front vertical locking plate 82 and the annular outer wall 80 of the base. An annular locking notch 841 is provided on the inner wall of the top of the positioning sleeve 84.

[0053] See Figure 9 , 10 The middle support 9 is provided with an annular outer wall 90. The bottom end face of the annular outer wall 90 is provided with an annular clamping groove 91 for inserting an annular plug-in piece 81 for circumferential fixation. The bottom of the middle support 9 is provided with a front strip slot 92 and a rear strip slot 93 for inserting a front vertical snap-fit ​​plate 82 and a rear vertical snap-fit ​​plate 83, respectively. The top front side of the annular outer wall 90 of the middle support is provided with a notch 901 for placing an electrical control box 52. The bottom front side of the middle support 9 is provided with a protruding sleeve 94 that communicates with the notch 901. The lower end of the protruding sleeve 94 is inserted into the annular snap-fit ​​notch 841 of the positioning sleeve 84.

[0054] In the production and assembly of this utility model, the fan 3, oil receiving tray 7, and oil filter screen assembly 6 are mounted on the base 8, and then the intermediate support 9 is placed on the base 8. The annular insert piece 81 is inserted into the annular clamping groove 91 to axially fix the intermediate support 9 and the base 8 during assembly. Simultaneously, as the annular insert piece 81 of the base 8 is inserted upwards into the annular clamping groove 91 of the intermediate support 9, the protruding sleeve 94 of the intermediate support 9 is inserted downwards into the positioning sleeve 84 of the base 8, and the front vertical... The snap-fit ​​plate 82 and the rear vertical snap-fit ​​plate 83 are inserted upwards into the front strip slot 92 and the rear strip slot 93 of the middle support 9, respectively, enabling the base 8 and the middle support 9 to achieve rapid assembly with multiple locking mechanisms. Then, the heat insulation plate 4, the electrically controlled heating plate 5, the baking tray 501 or the cooking tray 502, and the oven lid 2 are installed on the middle support 9. This design eliminates the need for a single-piece bottom shell in existing technologies, improving assembly efficiency, significantly enhancing the product's structural rationality, and increasing production efficiency by more than three times. Furthermore, when cleaning is required, the assembly and disassembly can be completed quickly for thorough cleaning, avoiding the space limitations of disassembling the integral shell and the incomplete cleaning of the interior of the shell in existing technologies.

[0055] In the existing technology CN217090424U, the oil filter assembly is directly and rigidly inserted into the housing. However, due to the very limited space near the motor, inserting the oil filter assembly in CN217090424U is often very difficult, requiring prolonged alignment and force to install it into the housing. Even when successfully installed, the oil filter assembly is often bent, making assembly inconvenient and affecting the oil filtration effect. This utility model overcomes these technical defects. (See [reference needed]). Figure 8 The base 8 has several locking blocks 85 offset inward from the upper locking slot 95. When the two ends of the oil filter assembly 6 are respectively locked in the upper locking slot 95 and the locking blocks 85, it is tilted between the base 8 and the middle support 9. The oil filter assembly 6 and the side wall of the heat insulation plate 4 form an oil fume buffer channel 10 that is wider at the top and narrower at the bottom. This oil fume buffer channel 10 is connected to the air inlet 41. Because when installing the oil filter assembly 6, the lower end of the oil filter assembly 6 is first locked in the locking block 85 of the base 8, and then the middle support 9 is covered, so that the upper end of the oil filter assembly 6 is locked in the upper locking slot 95 of the middle support 9, the oil filter assembly 6 can be quickly installed between the base 8 and the middle support 9, and the oil filter assembly 6 will not be bent, thus ensuring the oil filtering effect of the oil filter assembly 6. Furthermore, since the oil filter assembly 6 and the side wall of the heat insulation plate 4 form an oil fume buffer channel 10 that is wider at the top and narrower at the bottom, when the oil fume enters from the air inlet 41 and passes through the oil fume buffer channel 10, the pressure will gradually increase, slowing down the downward speed of the oil fume. This increases the contact time between the oil fume and the oil filter assembly 6, thereby improving the oil absorption effect.

[0056] See Figure 1-4 , Figure 13-21 To improve the efficiency of the oven cover 2, the oven cover 2 is detachably and rotatably mounted on the annular outer wall 90 of the central support 9. Two mounting seats 96 protruding from the central support 9 are provided on the top surface of the annular outer wall 90 near the air inlet 41. Each mounting seat 96 includes a vertical support seat 961 and a vertical baffle 962 connected together. The vertical support seat 961 includes a top insertion surface, an inner vertical closing surface, and an outer vertical movable support surface. An opening is provided in the vertical movable support surface within the vertical support seat 961. The arc-shaped horizontal groove 963 has a vertical opening 964 on its insertion surface that communicates with the arc-shaped horizontal groove 963. The width of the vertical opening 964 is smaller than the width of the arc-shaped horizontal groove 963. A vertically arranged arc-shaped snap-fit ​​surface 965, offset from the arc-shaped horizontal groove 963, is provided on the vertical baffle 962. The oven lid 2 includes a rotating lid body 21. Two opposing rotating support arms 22 are provided on one side of the rotating lid body 21. A vertical rotating surface 23 is provided on the side of each rotating support arm 22 opposite to the other rotating support arm. The outer side of the oven lid 2 is provided with an arc-shaped rotating surface 24 perpendicular to the vertical rotating surface 23. A transverse flat shaft 25 protrudes laterally from the vertical rotating surface 23. The transverse flat shaft 25 is separated from the arc-shaped rotating surface 24 by a certain distance. The width of the transverse flat shaft 25 is greater than its height, and the height of the transverse flat shaft 25 is less than the width of the vertical opening 964. The transverse flat shaft 25 can be inserted into the vertical opening 964 and enter the arc-shaped transverse groove 963 when the oven lid 2 is vertically upright. The horizontal flat shaft 25 is restricted within the arc-shaped horizontal groove 963 by the vertical opening 964 after the oven cover 2 rotates from the vertical direction. An air inlet opening 26 communicating with the air inlet 41 is formed between the rotating cover body 21 and the two rotating support arms 22. An air outlet 27 communicating with the air outlet 42 is provided on the other side of the rotating cover body 21. A vertical baffle plate 28 separating the air inlet opening 26 and the air outlet 27 is provided at the bottom of the rotating cover body 21. A handle 29 is provided on the top surface of the rotating cover body 21 next to the air outlet 27.

[0057] When it is necessary to install the oven lid 2 onto the middle support 9, place the oven lid 2 vertically at a perpendicular angle to the middle support 9. Then, align the two transverse flat shafts 25 of the oven lid 2 with the vertical opening 964 of the mounting base 96 on the middle support 9 and insert them into the arc-shaped transverse groove 963. Next, rotate the oven lid 2 downwards to a horizontal position relative to the middle support 9. In this way, the oven lid 2 is quickly installed onto the middle support 9. Since the width of the transverse flat shafts 25 is greater than the width of the vertical opening 964, the oven lid 2 can rotate relative to the middle support 9. When it is necessary to remove the oven cover 2, rotate the oven cover 2 to a 90-degree angle with the middle support 9. After the oven cover 2 rotates 90 degrees, the horizontal flat shaft 25 also rotates 90 degrees. The height direction of the horizontal flat shaft 25 is turned to the horizontal direction. Since the height of the horizontal flat shaft 25 is less than the width of the vertical opening 964, the vertical opening 964 no longer restricts the horizontal flat shaft 25. Pulling the oven cover 2 upward can quickly separate it from the middle support 9.

[0058] During the rotation of the oven lid 2 relative to the central support 9, the arc-shaped transverse groove 963 of the vertical support 961 and the transverse flat shaft 25 of the oven lid 2 are the first movable connection support points, while the arc-shaped snap-fit ​​surface 965 of the vertical baffle 962 and the arc-shaped rotating surface 24 of the oven lid 2 are the second movable connection support points. Moreover, since the arc-shaped snap-fit ​​surface 965 of the vertical baffle 962 and the arc-shaped transverse groove 963 of the vertical support 961 are staggered, and the transverse flat shaft 25 and the arc-shaped rotating surface 24 are separated by a distance, a stepped double-point snap-fit ​​is achieved for the oven lid 2 during rotation, ensuring the stability of the oven lid 2 rotation.

[0059] Regardless of whether the oven lid 2 is used for grilling with a baking pan 501 with an oil drain on the heating element 51, or for cooking or frying with a closed bottom cooking pan 502 on the heating element 51, the oven lid 2 should not be removed. When using the baking pan 501 for grilling, the oven lid 2 is rotated open and positioned on the middle support 9. The fumes generated during grilling are circulated and filtered by the suction of the fan 3. The fumes enter the middle support 9 from the air inlet 41. The fumes form a wide-at-the-top and narrow-at-the-bottom oil fume buffer channel 10 between the oil filter assembly 6 and the side wall of the heat insulation plate 4. When the fan is used to extract the fumes, the pressure of the fumes entering from the air inlet 41 gradually increases as they pass through the oil fume buffer channel 10, slowing down the downward speed of the fumes. This increases the contact time between the fumes and the oil filter assembly 6, allowing for longer absorption of the fumes. The purified gas then circulates continuously from the air outlet 42.

[0060] When using the cooking plate 502 for cooking or frying, you can choose to cover the oven lid 2 or leave it open. When the oven lid 2 is closed, since cooking or frying produces less smoke than grilling, the oil fumes from the food mix with the fresh air coming in through the air intake opening 26, diluting the concentration of the oil fumes. The mixed gas then enters the air inlet 41, forming a smoke buffer channel 10 that is wider at the top and narrower at the bottom between the oil filter assembly 6 and the side wall of the heat insulation plate 4. The pressure gradually increases, slowing down the downward speed of the mixed gas, allowing for prolonged absorption of smoke. The purified gas is then output from the air outlet 42 and the air vent 27.

[0061] To facilitate observation of the food's condition during preparation, a transparent glass plate 210 is provided on the oven lid 2. An installation hole 211 is provided on the rotating lid body 21 between the air inlet 26 and the air outlet 27. An annular installation step 212 is provided inside the installation hole 211. The transparent glass plate 210 is fixed inside the annular installation step 212. A sealing ring 213 is provided at the contact point between the transparent glass plate 210 and the installation hole. The handle 29 is fixed to the surface of the transparent glass plate 210.

[0062] To ensure that the movable end of the oven lid 2 can smoothly close onto the middle support 9 and avoid damage to the oven lid 2, at least two protruding buffer seats 214 are provided at the bottom of the rotating cover body 21 located at one end of the handle 29. An embedding groove 215 is provided in the buffer seat 214, with the opening of the embedding groove 215 facing downward. A latch 216 communicating with the embedding groove 215 is provided on the side wall of the embedding groove 215. A conical elastic block 217 with a thicker upper part and a thinner lower part is installed in the embedding groove 215. A latch 218 is provided on the side wall of the conical elastic block 217, which can be inserted into the latch 216 to fix the conical elastic block 217 in the embedding groove 215. The height of the conical elastic block 217 is greater than the depth of the embedding groove 215. When the oven lid 2 closes onto the middle support 9, the bottom of the conical elastic block 217 is locked onto the annular outer wall 90 of the middle support 9. When the oven lid 2 is pressed against the middle support 9, the conical elastic block 217 will undergo elastic deformation. The compressed conical elastic block 217 will become shorter and thicker, and will be more tightly locked in the embedded groove 215, so that the oven lid 2 is more tightly and gently fastened to the middle support 9.

[0063] A fan mounting base 86 for mounting the fan 3 is provided in the base 8. The fan mounting base 86 includes a first through plate seat 861 and a second through plate seat 862 that pass through the front vertical snap plate 82 and the rear vertical snap plate 83, respectively. A pair of lower insertion holes 860 are provided on the first through plate seat 861, a pair of middle insertion holes 900 opposite to the lower insertion holes 860 are provided on the middle support 9, and a pair of upper insertion holes 520 are provided on the electrical control box 52. A fan drive circuit board 31 is fixed on the fan 3, and a pair of electrode pins 32 are fixed on the fan drive circuit board 31. The electrode pins 32 pass through the lower insertion holes 860, the middle insertion holes 900, and the upper insertion holes 520 in sequence and are connected to the power supply in the electrical control box 52.

[0064] The base 8 has a fan mounting port at its bottom that communicates with the fan mounting base 86. A fan protective cover 30 is fastened to the fan mounting port. Several horizontal slots 801 are provided on one side wall of the fan mounting port, and several vertical slots 802 are provided on the other side wall of the fan mounting port. A horizontal locking platform 803 is provided on one side of the vertical slots 802. A horizontal insert 301 that can be horizontally inserted into the horizontal slot is provided on one side of the fan protective cover 30. A U-shaped elastic hook 302 with its opening facing downward is provided on the other side of the fan protective cover 30. The U-shaped elastic hook 302 includes a vertical fixing post 303 fixed to the top surface of the fan protective cover 30 and an elastic arm 304 connected to the vertical fixing post 303 in a U-shape. The length of the U-shaped elastic arm 304 is greater than the length of the vertical fixing post 303. A protruding hook 305 is provided on the outer wall of the elastic arm 304. The bottom of the protruding hook 305 is provided with a horizontal locking surface that engages with the transverse locking platform 803. The outer side of the protruding hook 305 is provided with a guide slope that facilitates the protruding hook 305 to pass upward over the transverse locking platform 803.

[0065] The lower end of the oil filter assembly 6 is provided with a strip-shaped clamping plate 61 that is clamped on the clamping block 85. The thickness of the strip-shaped clamping plate 61 is less than the thickness of the oil filter assembly 6. The strip-shaped clamping plate 61 is set perpendicular to the bottom surface of the oil filter assembly 6. Several reinforcing ribs 62 are provided between the strip-shaped clamping plate 61 and the bottom surface of the oil filter assembly 6.

[0066] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or alterations made by those skilled in the art, without departing from the scope of the utility model's technical solution, using the disclosed technical content, are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A smokeless electric oven with a detachable rotating cover, comprising an oven shell (1) and an oven cover (2), wherein a fan (3), a heat insulation plate (4), and an electrically controlled heating plate (5) are arranged sequentially from bottom to top inside the oven shell (1), wherein the heat insulation plate (4) is provided with a receiving cavity (40), wherein the electrically controlled heating plate (5) includes a heating tube (51) and an electrical control box (52) and an auxiliary installation box (53) connecting the two ends of the heating tube (51), wherein the electrical control box (52) and the auxiliary installation box (53) are installed on the oven shell (1) so that the heating tube (51) is located in the receiving cavity (40), wherein an air inlet (41) and an air outlet (42) are respectively provided on the two side walls of the receiving cavity (40), and an oil filter assembly (6) and an oil receiving tray (7) are also provided inside the oven shell (1). Its features are: The oven cover (2) is detachably and rotatably mounted on the oven shell (1). Two mounting seats (96) protruding from the oven shell (1) are provided on the top surface of the oven shell (1) near the air inlet (41). Each mounting seat (96) includes a vertical support seat (961) and a vertical baffle (962) connected together. The vertical support seat (961) includes a top insertion surface, an inner vertical closing surface, and an outer vertical movable support surface. An arc-shaped transverse groove (963) is formed in the vertical movable support surface within the vertical support seat (961), and a groove (962) is formed on the insertion surface that corresponds to the arc-shaped transverse groove (963). 63) A vertical opening (964) is connected to the horizontal opening (964), the width of which is less than the width of the arc-shaped horizontal groove (963). A vertical arc-shaped snap-fit ​​surface (965) is provided on the vertical baffle (962) and is offset from the arc-shaped horizontal groove (963). The oven cover (2) includes a rotating cover body (21). Two opposing rotating arms (22) are provided on one side of the rotating cover body (21). A vertical rotating surface (23) is provided on the side of the rotating arm (22) opposite to the other rotating arm. An arc perpendicular to the vertical rotating surface (23) is provided on the outside of the rotating arm (22). A transverse flat shaft (25) protrudes laterally from the vertical rotating surface (23) on the curved rotating surface (24). The transverse flat shaft (25) is separated from the curved rotating surface (24) by a certain distance. The width of the transverse flat shaft (25) is greater than its height. The height of the transverse flat shaft (25) is less than the width of the vertical opening (964). The width of the transverse flat shaft (25) is greater than the width of the vertical opening (964). The transverse flat shaft (25) can be inserted into the vertical opening (964) and enter the curved transverse groove (963) when the oven lid (2) is vertically upright. The transverse flat shaft (25) can be inserted into the vertical opening (964) and enter the curved transverse groove (963) when the oven lid (2) is vertically upright. (2) After rotating from the vertical direction, it is always restricted in the arc-shaped horizontal groove (963) by the vertical opening (964). A supplementary air intake opening (26) communicating with the air inlet (41) is formed between the rotating cover body (21) and the two rotating support arms (22). An air outlet (27) communicating with the air outlet (42) is provided on the other side of the rotating cover body (21). A vertical wind baffle (28) separating the supplementary air intake opening (26) and the air outlet (27) is provided at the bottom of the rotating cover body (21). A handle (29) is provided on the top surface of the rotating cover body (21) next to the air outlet (27).

2. A smokeless electric oven with a detachable rotating cover according to claim 1, characterized in that... The oven shell (1) includes a base (8) and a hollow central support (9) that can be detachably installed on the base (8). The fan (3) and the oil receiving tray (7) are located inside the base (8). The oven cover (2), the heat insulation plate (4), and the electric heating plate (5) are located on the central support (9). A baking tray (501) with an oil drain or a cooking tray (502) with a closed bottom is provided on the heating tube (51). The base (8) is provided with an annular outer wall (80), and an annular insert plate (81) is provided at the top of the annular outer wall of the base (8). An inner annular locking platform (811) and an outer annular locking platform (812) with a height lower than the annular insert plate (81) are provided on the inner and outer sides of the annular insert plate (81). A front vertical locking plate (82) and a rear vertical locking plate (83) connecting the annular outer wall of the base (8) are provided on the front and rear sides of the base (8). A positioning sleeve (84) is provided on the base (8) between the front vertical locking plate (82) and the annular outer wall (80) of the base. An annular locking notch (841) is provided on the inner wall of the top of the positioning sleeve (84). The middle support (9) is provided with a middle support annular outer wall (90). The bottom end face of the middle support annular outer wall (90) is provided with an annular clamping groove (91) for inserting an annular plug-in piece (81) for circumferential fixation. At the bottom of the middle support (9), there are front strip slots (92) and rear strip slots (93) for inserting a front vertical snap-fit ​​plate (82) and a rear vertical snap-fit ​​plate (83), respectively. At the top front side of the middle support annular outer wall (90), there is a notch (901) for placing an electrical control box (52). The bottom front side of the seat (9) protrudes downward and is provided with a protruding sleeve (94) communicating with the notch (901). The lower end of the protruding sleeve (94) is inserted into the annular snap-fit ​​notch (841) of the positioning sleeve (84). When the annular insert piece (81) is inserted into the annular clamping groove (91), the protruding sleeve (94) is inserted downward into the positioning sleeve (84), while the front vertical snap-fit ​​plate (82) and the rear vertical snap-fit ​​plate (83) are inserted upward into the front strip slot (92) and the rear strip slot (93) respectively. An upper slot (95) is provided on the upper end of one side of the annular outer wall (90) of the middle support (9). Several locking blocks (85) are provided on the base (8) and are offset inward from the upper slot (95). When the two ends of the oil filter assembly (6) are respectively locked in the upper slot (95) and the locking blocks (85), they are placed at an inclination between the base (8) and the middle support (9). The oil filter assembly (6) and the side wall of the heat insulation plate (4) form an oil fume buffer channel (10) that is wider at the top and narrower at the bottom. The oil fume buffer channel (10) is connected to the air inlet (41).

3. A smokeless electric oven with a detachable rotating cover according to claim 1, characterized in that... An installation hole (211) is provided on the rotating cover body (21) between the air inlet opening (26) and the air outlet (27). An annular installation step (212) is provided in the installation hole (211). A transparent glass plate (210) is fixed in the annular installation step (212). A sealing ring (213) is provided at the contact point between the transparent glass plate (210) and the installation hole. The handle (29) is fixed on the surface of the transparent glass plate (210).

4. A smokeless electric oven with a detachable rotating cover according to claim 2, characterized in that... At least two protruding buffer seats (214) are provided at the bottom of the rotating cover body (21) located at one end of the handle (29). An embedding groove (215) is provided in the buffer seat (214). The embedding groove (215) is open downward. A slot (216) communicating with it is provided on the side wall of the embedding groove (215). A conical elastic block (217) with a thicker top and a thinner bottom is installed in the embedding groove (215). A locking head (218) is provided on the side wall of the conical elastic block (217) that can be inserted into the slot (216) to fix the conical elastic block (217) in the embedding groove (215). The height of the conical elastic block (217) is greater than the depth of the embedding groove (215). The bottom of the conical elastic block (217) is locked on the annular outer wall (90) of the middle support when the oven cover (2) is closed on the middle support (9).

5. A smokeless electric oven with a detachable rotating cover according to claim 2, characterized in that... A fan mounting base (86) for installing a fan (3) is provided in the base (8). The fan mounting base (86) includes a first through plate seat (861) and a second through plate seat (862) that pass through the front vertical snap plate (82) and the rear vertical snap plate (83) respectively. A pair of lower insertion holes (860) are provided on the first through plate seat (861). A pair of middle insertion holes (900) opposite to the lower insertion holes (860) are provided on the middle support (9). A pair of upper insertion holes (520) are provided on the electrical control box (52). A fan drive circuit board (31) is fixed on the fan (3). A pair of electrode pins (32) are fixed on the fan drive circuit board (31). The electrode pins (32) pass through the lower insertion hole (860), the middle insertion hole (900), and the upper insertion hole (520) in sequence and are connected to the power supply in the electrical control box (52).

6. A smokeless electric oven with a detachable rotating cover according to claim 2, characterized in that... The base (8) has a fan mounting port at its bottom that communicates with the fan mounting base (86). A fan protective cover (30) is fastened to the fan mounting port. Several horizontal slots (801) are provided on one side wall of the fan mounting port, and several vertical slots (802) are provided on the other side wall of the fan mounting port. A horizontal locking platform (803) is provided on one side of the vertical slot (802). A horizontal insert (301) that can be horizontally inserted into the horizontal slot is provided on one side of the fan protective cover (30). A U-shaped elastic hook (302) with its opening facing downward is provided on the other side of the fan protective cover (30). The snap hook (302) includes a vertical fixing post (303) fixed to the top surface of the fan protective cover (30) and an elastic arm (304) connected to the vertical fixing post (303) in a U-shape. The length of the U-shaped elastic arm (304) is greater than the length of the vertical fixing post (303). A protruding snap hook (305) is provided on the outer wall of the elastic arm (304). The bottom of the protruding snap hook (305) is provided with a horizontal snap surface that engages with the transverse snap platform (803). The outer side of the protruding snap hook (305) is provided with a guide slope that facilitates the protruding snap hook (305) to move upward over the transverse snap platform (803).

7. A smokeless electric oven with a detachable rotating cover according to claim 2, characterized in that... The lower end of the oil filter assembly (6) is provided with a strip-shaped card plate (61) that is clipped onto the card block (85). The thickness of the strip-shaped card plate (61) is less than the thickness of the oil filter assembly (6). The strip-shaped card plate (61) is set perpendicular to the bottom surface of the oil filter assembly (6). Several reinforcing ribs (62) are provided between the strip-shaped card plate (61) and the bottom surface of the oil filter assembly (6).

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