Self-cleaning embedded oven

Abstract

The invention belongs to the technical field of ovens, and particularly relates to a self-cleaning embedded oven. Comprising a shell, a rotating disc, a heating assembly, a cleaning assembly and a control device, the rotating disc, the heating assembly and the cleaning assembly are all arranged in a heating cavity of the shell, the cleaning assembly is arranged on the rotating disc, and a driving assembly is arranged in an equipment cavity of the shell and used for driving the rotating disc to rotate. The heating assembly and the driving assembly are both electrically connected with the control device, and the control device switches the heating power of the heating assembly according to the weight change on the rotary disc so as to bake food and carbonized residues. The control device drives the cleaning assembly to scrape residues at the bottom of the shell through the driving assembly according to the weight change on the rotary disc, and a negative pressure fan is arranged on the side wall of the shell, communicates with the exterior of the shell and is used for sucking out the scraped residues; the interior of the oven can be automatically cleaned, and meanwhile the cleaning efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ovens, and in particular relates to a self-cleaning built-in oven. Background Art

[0002] Built-in ovens are designed to be embedded in cabinets. Their main features include space saving, comprehensive functions, large capacity and easy cleaning. This design not only looks neater and more advanced, but also improves the convenience and efficiency of cooking. The working principle of built-in ovens is mainly based on heating tubes and hot air systems. The heating tubes generate heat through electric current to directly heat the food; while the hot air system circulates the heated air inside the oven through a fan to achieve uniform heat distribution. In addition, the oven is also equipped with high-precision temperature sensors and intelligent control systems to ensure that the oven works within the set temperature range, enabling it to achieve precise temperature control and constant temperature baking to ensure the taste and nutrition of the food. At the same time, in order to ensure the hygiene of use, it is necessary to clean the inside and outside of the oven regularly to keep it in good working condition and extend its service life.

[0003] When some food manufacturers for pastries produce solid baked food, the space-saving feature of the built-in oven is more applicable due to the need for large-scale production. However, in the process of baking food, the food is easy to drip to the bottom of the oven when it is placed in the oven, or some liquid food is easy to boil and drip to the bottom of the oven during the baking process and is dried and solidified. It is difficult to clean it in real time in large-scale production. When baking multiple batches of food, the food remaining in the oven is easy to produce odor, affecting the quality of the food. Although the oven in the prior art has an automatic cleaning program and corresponding device, it takes a long time to clean it with detergent, and it takes a long time to dry it after cleaning before the next batch of food can be baked, resulting in low food production efficiency.

[0004] Based on this, in order to ensure food production efficiency, it is necessary to design a self-cleaning embedded oven that can automatically clean the inside of the oven and improve the cleaning efficiency. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a self-cleaning built-in oven.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A self-cleaning built-in oven of the present invention comprises a shell, a turntable, a heating component, a cleaning component and a control device, wherein the turntable, the heating component and the cleaning component are all arranged in the heating cavity of the shell, the cleaning component is arranged on the turntable, a driving component is arranged in the equipment cavity of the shell for driving the turntable to rotate, the heating component and the driving component are both electrically connected to the control device, the control device switches the heating power of the heating component for baking food and carbonizing residues according to the weight change on the turntable, the control device drives the cleaning component to scrape the residue at the bottom of the shell through the driving component according to the weight change on the turntable, and a negative pressure fan is arranged on the side wall of the shell to be connected to the outside of the shell for sucking out the scraped residue.

[0008] Furthermore, a central axis is provided at the bottom of the shell, the turntable is rotatably provided on the central axis, the driving assembly includes a sleeve, the sleeve is movably sleeved on the central axis and coaxially connected to the bottom of the turntable, a spring is provided at the bottom of the sleeve, the cleaning assembly is transmission-connected to the central axis, and the spring drives the sleeve to rise and fall according to the weight change on the turntable, so as to drive the cleaning assembly to contact or separate from the bottom of the shell.

[0009] Furthermore, a pressure sensor is provided at the bottom of the spring, and the pressure sensor is electrically connected to the control device. The control device adjusts the heating power of the heating component according to the weight of the pressure sensor.

[0010] Furthermore, the cleaning component includes a swing frame, the rotating shaft of the swing frame is horizontally rotated and arranged at the bottom of the turntable, the central shaft is provided with teeth, the rotating shaft of the swing frame is provided with teeth and meshes with the central shaft, the swing frame and the sleeve are synchronously lifted and lowered on the central shaft to drive the swing frame to rotate.

[0011] Furthermore, a scraper is provided on a side opposite to the rotating shaft on the swing frame, and the scraper is used to scrape off carbonized residues when contacting the bottom of the shell.

[0012] Furthermore, a groove is provided at the bottom of the shell, the cleaning area of ​​the swing frame is located in the groove, and the negative pressure fan is connected to the groove.

[0013] Furthermore, the drive assembly also includes a motor, an upper bevel gear and a lower bevel gear, the upper bevel gear and the lower bevel gear are respectively rotatably connected to the top and bottom of the shell equipment cavity, a transmission bevel gear is provided at the bottom of the sleeve, and bevel teeth are provided on the upper and lower sides of the transmission bevel gear for respectively meshing with the upper bevel gear and the lower bevel gear when the weight on the turntable changes, the motor is connected to the upper bevel gear transmission shaft, and the transmission shaft ends of the upper bevel gear and the lower bevel gear are meshed and transmitted with each other.

[0014] Furthermore, a hydraulic cylinder is provided on the swing frame, and the scraper is connected to the piston of the hydraulic cylinder. The liquid inside the hydraulic cylinder absorbs heat and expands, and then pushes the scraper to abut against the bottom of the shell to scrape off the residue.

[0015] The beneficial effects of the present invention are:

[0016] (1) Therefore, the oven is controlled to be in different working modes through the control device, and the heating component is adjusted to different heating powers according to different working modes. When the oven is in the baking mode for baking food, the heating component is at a normal baking temperature, and the turntable drives the food on the turntable to rotate under the driving action of the driving component, so that the food in different positions can be evenly baked, and the cleaning component at the bottom of the turntable is also retracted; when the oven is in the cleaning mode, the food in the oven has been baked and taken out, and the heating component is at an ultra-high temperature. The ultra-high temperature of the heating component bakes the residue dripping on the bottom of the shell to carbonization. Since food such as cake liquid has a certain stickiness, it is difficult to clean it by ordinary wiping after high-temperature carbonization. Therefore, it is scraped by the cleaning component set at the bottom of the turntable, and then the scraped residue is sucked out of the shell by the negative pressure fan to complete the cleaning of the oven. Not only is the cleaning efficiency high, but the cleaning effect is also better;

[0017] (2) The swing frame and the bottom of the turntable form a hinge-like connection structure, so that the swing frame rotates at the bottom of the turntable, and the teeth on one end of the swing frame shaft mesh with the central axis. When the turntable and the sleeve drive the swing frame to move up and down synchronously, the swing frame will rotate accordingly. When the turntable moves up, the swing frame rotates to abut against the bottom of the shell, and when the turntable moves down, the swing frame rotates to separate from the bottom of the shell;

[0018] (3) The volume and pressure of the liquid in the hydraulic cylinder will change with the change of temperature. When baking food normally, the swing frame is in the retracted state, so the scraper blade will not be affected by the expansion and contraction of the scraper blade with the pressure change of the hydraulic cylinder. When in the cleaning mode, the swing frame is lowered. At this time, the scraper blade at the bottom of the swing frame is still some distance away from the bottom of the shell and will not directly contact. Only after the heating component is heated for a period of time and the residue at the bottom of the shell is gradually hardened and carbonized, the liquid in the hydraulic cylinder absorbs heat and expands as the temperature rises, and the pressure increases, pushing the scraper blade out to contact the bottom of the shell. After a period of heating, on the one hand, the residue at the bottom of the shell is carbonized, and on the other hand, the hydraulic cylinder absorbs enough heat to pressurize the liquid to push the scraper blade, which can ensure the cleaning effect of the residue at the bottom of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the internal structure of the present invention in a baking state;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention in the initial stage of the cleaning state;

[0022] Figure 3 It is a schematic diagram of the internal structure of the present invention in the later stage of the cleaning state;

[0023] Figure 4 For the present invention Figure 3 The enlarged view of point A in the middle;

[0024] Figure 5 It is a schematic diagram of the top view of the turntable structure of the present invention;

[0025] Legend: 1. Shell; 2. Heating component; 3. Negative pressure fan; 4. Groove; 5. Turntable; 6. Swing frame; 7. Hydraulic cylinder; 8. Scraper; 9. Sleeve; 10. Center shaft; 11. Upper bevel gear; 12. Lower bevel gear. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0027] like Figure 1-Figure 5 As shown, a self-cleaning built-in oven of the present invention comprises a shell 1, a turntable 5, a heating component 2, a cleaning component and a control device. The turntable 5, the heating component 2 and the cleaning component are all arranged in the heating chamber of the shell 1, and the cleaning component is arranged on the turntable 5. A driving component is arranged in the equipment chamber of the shell 1 for driving the turntable 5 to rotate. The heating component 2 and the driving component are both electrically connected to the control device. The control device switches the heating power of the heating component 2 according to the weight change on the turntable 5 for baking food and carbonizing the residue at the bottom of the shell 1. The control device drives the cleaning component to scrape the residue at the bottom of the shell 1 through the driving component according to the weight change on the turntable 5. A negative pressure fan 3 is arranged on the side wall of the shell 1 and is connected to the outside of the shell 1 for sucking out the scraped residue.

[0028] When some pastry food manufacturers produce solid baked foods, they need to produce them on a large scale, so the space-saving feature of built-in ovens is more applicable. A large-capacity built-in oven can be placed in the production workshop. However, in the process of baking food, the food is easy to drip to the bottom of the oven when it is placed in the oven, or some liquid food is easy to boil and drip to the bottom of the oven during the baking process and is dried and solidified. For example, when making cakes, cake liquid is easy to drip, which is difficult to clean in real time during large-scale production. When baking multiple batches of food, the food remaining in the oven is easy to produce odor, affecting the quality of the food. Although the oven in the prior art has an automatic cleaning program and corresponding device, it takes a long time to clean with detergent, and it takes a long time to dry after cleaning before the next batch of food can be baked, resulting in low food production efficiency;

[0029] In order to improve the cleaning efficiency in the oven between each production batch and avoid the odor caused by the food dripping and sticking to the bottom of the oven and continuing to bake, the oven is controlled by the control device to be in different working modes, and the heating component 2 is adjusted to different heating powers according to different working modes. When the oven is in the baking mode for baking food, the heating component 2 is at a normal baking temperature, and the turntable 5 drives the food on the turntable 5 to rotate under the driving action of the driving component, so that the food at different positions can be evenly baked, and the cleaning component at the bottom of the turntable 5 is also retracted; when the oven is in the cleaning mode, the food in the oven has been baked and taken out, and the heating component 2 is at an ultra-high temperature. The ultra-high temperature of the heating component 2 bakes the residue dripping on the bottom of the shell 1 to carbonization. Since food such as cake liquid has a certain viscosity, it is difficult to be cleaned by general wiping after high-temperature carbonization. Therefore, it is scraped by the cleaning component arranged at the bottom of the turntable 5, and then the scraped residue is sucked out of the shell 1 by the negative pressure fan 3 to complete the cleaning of the oven. Since general built-in ovens are cleaned by soaking in detergent and then drying, foods such as cake batter and protein need to be soaked for a long time after sticking in the oven. By carbonizing the residues through ultra-high temperature baking and then scraping them off with the cleaning component, not only is the cleaning efficiency higher, but the cleaning effect is also better.

[0030] Furthermore, since food needs to be placed on the turntable 5 when the oven is in baking mode, and the turntable 5 is empty when it is in cleaning mode, the turntable 5 is under different pressures in the two modes. Through the pressure change, the oven automatically determines the working mode it is in, and automatically adjusts the heating state of the heating component 2 to achieve self-cleaning of the oven.

[0031] Specifically, in one embodiment, a central axis 10 is provided at the bottom of the housing 1, and the turntable 5 is rotatably provided on the central axis 10. The driving assembly includes a sleeve 9, which is movably sleeved on the central axis 10 and coaxially connected to the bottom of the turntable 5. A spring is provided at the bottom of the sleeve 9, and the cleaning assembly is transmission-connected with the central axis 10. The spring drives the sleeve 9 to rise and fall according to the weight change on the turntable 5, so as to drive the cleaning assembly to contact or separate from the bottom of the housing 1; a pressure sensor is provided at the bottom of the spring, and the pressure sensor is electrically connected to the control device, and the control device adjusts the heating power of the heating assembly 2 according to the weight of the pressure sensor;

[0032] The central axis 10 is fixed to the bottom of the housing 1, the top of the sleeve 9 is connected to the bottom of the turntable 5, and the spring at the bottom of the sleeve 9 pushes the sleeve 9 and the turntable 5 upward, so that the turntable 5 can produce relative displacement under the two weight states of placing food and taking food away. When it is necessary to bake food, the food is placed on the turntable 5, so that the turntable 5 and the sleeve 9 are pressed downward, and the downward pressure will output a signal to the control device through the pressure sensor, so that the control device instructs the heating component 2 to switch to the baking mode, and the downward movement of the sleeve 9 and the turntable 5 will drive the cleaning component to retract and not contact the bottom of the housing 1; when cleaning, the food is taken away from the turntable 5 after baking, and the weight is reduced, so that the spring pushes the sleeve 9 and the turntable 5 to reset and move upward. After the pressure of the pressure sensor is reduced, the signal is output to the control device, so that the control device instructs the heating component 2 to switch to the cleaning mode, and the upward movement of the sleeve 9 and the turntable 5 will drive the cleaning component to be lowered and contact the bottom of the housing 1, and as the turntable 5 rotates, the residues carbonized at high temperature on the bottom of the housing 1 are scraped off.

[0033] Further, the cleaning assembly includes a swing frame 6, the rotating shaft of the swing frame 6 is horizontally rotated and arranged at the bottom of the turntable 5, the central shaft 10 is provided with teeth, the rotating shaft of the swing frame 6 is provided with teeth and meshes with the central shaft 10, and the swing frame 6 and the sleeve 9 are synchronously lifted and lowered on the central shaft 10 to drive the swing frame 6 to rotate;

[0034] The swing frame 6 forms a hinge-like connection structure with the bottom of the turntable 5, so that the swing frame 6 rotates at the bottom of the turntable 5, and the teeth on one end of the swing frame 6 shaft mesh with the central axis 10. When the turntable 5 and the sleeve 9 drive the swing frame 6 to move up and down synchronously, the up and down movement of the swing frame 6 will rotate accordingly. When the turntable 5 moves up, the swing frame 6 rotates to abut against the bottom of the shell 1, and when the turntable 5 moves down, the swing frame 6 rotates to separate from the bottom of the shell 1.

[0035] In order to prevent the residues from boiling or fermenting when the food is placed on the turntable 5 and dripping onto the turntable 5 or the swing frame 6, the turntable 5 has a hollow structure. Therefore, the swing frame 6 has a similar hollow structure, which reduces the projected area so that the food can drip directly onto the bottom of the shell 1 for easy cleaning.

[0036] Furthermore, a scraper 8 is provided on the side opposite to the rotating shaft on the swing frame 6, and the scraper 8 is used to scrape off the carbonized residue when it contacts the bottom of the shell 1; the scraper 8 can be made of a high-temperature resistant flexible material, such as high-temperature resistant rubber, or other metal materials.

[0037] Furthermore, a groove 4 is provided at the bottom of the shell 1, the cleaning area of ​​the swing frame 6 is in the groove 4, and the negative pressure fan 3 is connected to the groove 4; the projection of the turntable 5 at the bottom of the shell 1 is in the groove 4, and the groove 4 can enable the scraper 8 to completely sweep away the carbonized residue when scraping it, avoiding being swept into the active range of the swing frame 6 under the rotation of the swing frame 6, and when the residue is scraped and swept to the notch of the groove 4 at the position of the negative pressure fan 3, it can be sucked out by the negative pressure fan 3.

[0038] Further, the driving assembly also includes a motor, an upper bevel gear 11 and a lower bevel gear 12, the upper bevel gear 11 and the lower bevel gear 12 are rotatably connected to the top and bottom of the equipment cavity of the housing 1 respectively, a transmission bevel gear is provided at the bottom of the sleeve 9, and bevel teeth are provided on the upper and lower sides of the transmission bevel gear for respectively meshing with the upper bevel gear 11 and the lower bevel gear 12 when the weight on the turntable 5 changes, the motor is connected to the transmission shaft of the upper bevel gear 11, and the transmission shaft ends of the upper bevel gear 11 and the lower bevel gear 12 are meshed and transmitted with each other;

[0039] When food is placed on the turntable 5, the weight increases, and the sleeve 9 and the turntable 5 move downward, so that the bevel teeth on the lower side of the sleeve 9 mesh with the lower bevel gear 12. After the food is taken away, the weight decreases, and the sleeve 9 and the turntable 5 move upward, so that the bevel teeth on the upper side of the sleeve 9 mesh with the upper bevel gear 11, and both can achieve transmission. In addition, the diameter of the upper bevel gear 11 is larger than the diameter of the lower bevel gear 12, so that the rotation speed of the turntable 5 is slower in the baking mode in which the sleeve 9 meshes with the lower bevel gear 12, and the placed food is thrown out, while the rotation speed of the turntable 5 is faster in the cleaning mode in which the sleeve 9 meshes with the upper bevel gear 11, so that the scraper 8 has sufficient contact speed and force with the carbonized residues sticking to the bottom of the housing 1, so as to scrape off the residues.

[0040] Because the swing frame 6 in the above embodiment will be directly lowered and contact the bottom of the shell 1 in the cleaning mode when no food is placed on the turntable 5, the residue that has not been baked to carbonization will be evenly wiped on the bottom of the shell 1 with the scraping action of the scraper 8, which will expand the residual range of the residue and make it difficult to clean. In order to avoid this problem, in one embodiment, a hydraulic cylinder 7 is provided on the swing frame 6, and the scraper 8 is connected to the piston of the hydraulic cylinder 7. After the liquid inside the hydraulic cylinder 7 absorbs heat and expands, it pushes the scraper 8 to abut against the bottom of the shell 1 to scrape off the residue; the volume and pressure of the liquid in the hydraulic cylinder 7 will change according to the change of temperature. When it is in the normal baking state, the swing frame 6 is in the retracted state. Therefore, the expansion and contraction of the scraper 8 as the pressure of the hydraulic cylinder 7 changes will not have any effect. When in cleaning mode, the swing frame 6 is lowered. At this time, the scraper 8 at the bottom of the swing frame 6 is still some distance away from the bottom of the shell 1 and will not directly contact it. Only after the heating component 2 is heated for a period of time and the residue at the bottom of the shell 1 is gradually hardened and carbonized, the liquid in the hydraulic cylinder 7 absorbs heat and expands as the temperature rises, and the pressure increases, pushing the scraper 8 out to contact the bottom of the shell 1. After a period of heating, on the one hand, the residue at the bottom of the shell 1 is carbonized, and on the other hand, the hydraulic cylinder 7 absorbs enough heat to pressurize the liquid to push the scraper 8, which can ensure the cleaning effect of the residue at the bottom of the shell 1.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A self-cleaning built-in oven, characterized in that: It includes a shell, a turntable, a heating component, a cleaning component and a control device, wherein the turntable, the heating component and the cleaning component are all arranged in the heating cavity of the shell, the cleaning component is arranged on the turntable, a driving component is arranged in the shell equipment cavity for driving the turntable to rotate, the heating component and the driving component are both electrically connected to the control device, the control device switches the heating power of the heating component for baking food and carbonizing the residue at the bottom of the shell according to the weight change on the turntable, the control device drives the cleaning component to scrape the residue at the bottom of the shell through the driving component according to the weight change on the turntable, and a negative pressure fan is arranged on the side wall of the shell and is connected to the outside of the shell for sucking out the scraped residue.

2. A self-cleaning built-in oven according to claim 1, characterized in that: A central axis is provided at the bottom of the shell, the turntable is rotatably provided on the central axis, the driving assembly includes a sleeve, the sleeve is movably sleeved on the central axis and coaxially connected to the bottom of the turntable, a spring is provided at the bottom of the sleeve, the cleaning assembly is transmission-connected to the central axis, and the spring drives the sleeve to rise and fall according to the weight change on the turntable, so as to drive the cleaning assembly to contact or separate from the bottom of the shell.

3. A self-cleaning built-in oven according to claim 2, characterized in that: A pressure sensor is provided at the bottom of the spring. The pressure sensor is electrically connected to the control device. The control device adjusts the heating power of the heating component according to the weight of the pressure sensor.

4. A self-cleaning built-in oven according to claim 2, characterized in that: The cleaning component includes a swing frame, the rotating shaft of the swing frame is horizontally rotated and arranged at the bottom of the turntable, the central shaft is provided with teeth, the rotating shaft of the swing frame is provided with teeth and meshes with the central shaft, the swing frame and the sleeve are synchronously lifted and lowered on the central shaft to drive the swing frame to rotate.

5. A self-cleaning built-in oven according to claim 4, characterized in that: A scraper is arranged on one side of the swing frame opposite to the rotating shaft, and the scraper is used to scrape off carbonized residues when contacting the bottom of the shell.

6. A self-cleaning built-in oven according to claim 4, characterized in that: The bottom of the shell is provided with a groove, the cleaning area of ​​the swing frame is located in the groove, and the negative pressure fan is connected to the groove.

7. The self-cleaning built-in oven according to claim 5, characterized in that: The driving assembly also includes a motor, an upper bevel gear and a lower bevel gear, the upper bevel gear and the lower bevel gear are rotatably connected to the top and bottom of the shell equipment cavity respectively, a transmission bevel gear is arranged at the bottom of the sleeve, and bevel teeth are arranged on the upper and lower sides of the transmission bevel gear for respectively meshing with the upper bevel gear and the lower bevel gear when the weight on the turntable changes, the motor is connected to the transmission shaft of the upper bevel gear, and the transmission shaft ends of the upper bevel gear and the lower bevel gear are meshed and transmitted with each other.

8. The self-cleaning built-in oven according to claim 5, characterized in that: The swing frame is provided with a hydraulic cylinder, and the scraper is connected to the piston of the hydraulic cylinder. The liquid inside the hydraulic cylinder absorbs heat and expands, thereby pushing the scraper to abut against the bottom of the shell to scrape off residues.

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