An electric leakage-proof oven

Abstract

The utility model relates to the technical field of oven, concretely is a kind of oven of leakage protection, still be equipped with multiple insulation bushings that electric heating tube is penetrated on insulating support, the both ends of the insulation bushing are equipped with annular locating seat, the annular locating seat is penetrated by insulation bushing and is threadedly connected with the both ends of insulation bushing, the inner side of the annular locating seat is attached to insulating support, electric heating tube is wrapped by alumina ceramic insulation bushing, and it is designed in combination with non-contact electric leakage detection system, insulating base and box door insulation coating etc., and multiple protection system is constructed. Even if electric heating tube insulating layer is damaged, non-contact electric leakage detection sensor can also quickly respond alarm, effectively avoid user electric shock risk, provide reliable security guarantee for user.

Description

Technical Field

[0001] This utility model relates to the field of oven technology, specifically to an oven that is leak-proof. Background Technology

[0002] An electric oven is a kitchen appliance that uses electric heating elements to generate heat to bake food. It is widely used in homes and commercial spaces. A typical electric oven consists of a cabinet and a heating element. The heating element is installed on the side wall of the cabinet and is filled with magnesium oxide as an insulation layer. However, it is impossible to guarantee that the magnesium oxide insulation layer will always be intact. During long-term use, the heating element may leak electricity. Once the heating element leaks electricity, the current will be conducted to the metal side wall, making the entire metal cabinet conductive. Users are at risk of electric shock when using the oven. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the shortcomings of the existing technology, this utility model provides an oven that is leak-proof.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oven that prevents electric leakage, comprising an oven body, a door at the front end of the oven body, two insulating supports symmetrically arranged inside the oven body, and multiple heating elements mounted on the insulating supports;

[0007] The insulating support is also provided with a plurality of insulating sleeves through which the heating tubes pass. Both ends of the insulating sleeves are provided with annular positioning seats. The annular positioning seats are through the insulating sleeves and threadedly connected to both ends of the insulating sleeves. The annular positioning seats fit against the inner side of the insulating support.

[0008] Two non-contact leakage current detection sensors are symmetrically arranged on the inner wall of the oven body. A leakage current controller is provided at the upper end of the oven body. The leakage current controller is equipped with a leakage current alarm. A wiring conduit is provided between the leakage current controller and the non-contact leakage current detection sensors. The non-contact leakage current detection sensors and the leakage current controller are connected through a control line, which passes through the wiring conduit.

[0009] To improve the insulation effect of this structure, the present invention includes the following improvements: the lower end of the oven body is provided with multiple insulating bases, and the outer and inner walls of the oven body are coated with an insulating coating.

[0010] Furthermore, an improvement of this utility model is that the outer wall of the heating element is tightly fitted to the inner wall of the insulating sleeve.

[0011] To facilitate the installation of the heating element on the insulating support, the present invention includes the following improvements: the annular positioning seat is provided with a rotating tube that is penetrated by the insulating sleeve, the outer wall of the rotating tube is provided with anti-slip texture, and the annular positioning seat and the rotating tube are an integrated structure.

[0012] To make the heating element more securely installed, the present invention includes the following improvement: the inner side of the insulating bracket is provided with multiple grooves, and the outer end of the annular positioning seat can be inserted into the grooves.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides an oven that prevents electric leakage, which has the following beneficial effects:

[0015] High safety assurance: The heating element is wrapped in an alumina ceramic insulating sleeve, and combined with a non-contact leakage detection system, an insulating base, and an insulating coating on the cabinet door, a multi-layer protection system is constructed. Even if the insulation layer of the heating element is damaged, the non-contact leakage detection sensor can quickly respond with an alarm, effectively avoiding the risk of electric shock to users and providing reliable safety assurance.

[0016] Easy installation and maintenance: The heating element is connected to the insulating support via a threaded connection, and the rotating tube features an anti-slip texture, greatly facilitating installation and disassembly. Maintenance personnel can easily inspect or replace the heating element, reducing maintenance difficulty and costs, and improving the maintainability of the equipment. Attached Figure Description

[0017] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 Side view;

[0019] Figure 3 This utility model Figure 1 The main view;

[0020] Figure 4 This is a schematic diagram of the installation structure of the insulating sleeve in this utility model;

[0021] Figure 5 This is a schematic diagram of the groove structure in this utility model;

[0022] In the diagram: 1. Oven body; 2. Oven door; 3. Insulating base; 4. Insulating bracket; 5. Heating element; 6. Insulating sleeve; 7. Annular positioning seat; 8. Non-contact leakage current detection sensor; 9. Wiring pipe; 10. Leakage current controller; 11. Leakage current alarm; 12. Rotating tube; 13. Anti-slip texture. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 The present invention provides an oven that is leak-proof, comprising an oven body 1, a door 2 at the front end of the oven body 1, two insulating supports 4 symmetrically arranged inside the oven body 1, and multiple heating elements 5 on the insulating supports 4.

[0025] The insulating support 4 is also provided with a plurality of insulating sleeves 6 through which the heating tubes 5 pass. The two ends of the insulating sleeves 6 are provided with annular positioning seats 7. The annular positioning seats 7 are through the insulating sleeves 6 and threadedly connected to the two ends of the insulating sleeves 6. The annular positioning seats 7 fit against the inner side of the insulating support 4.

[0026] Two non-contact leakage current detection sensors 8 are symmetrically arranged on the inner wall of the oven body 1. A leakage current controller 10 is provided at the upper end of the oven body 1. A leakage current alarm 11 is provided on the leakage current controller 10. A wiring pipe 9 is provided between the leakage current controller 10 and the non-contact leakage current detection sensors 8. The non-contact leakage current detection sensors 8 and the leakage current controller 10 are connected by a control line, which passes through the wiring pipe 9.

[0027] The outer wall of the heating element 5 is tightly fitted to the inner wall of the insulating sleeve 6.

[0028] The annular positioning seat 7 is provided with a rotating tube 12 that is penetrated by an insulating sleeve 6. The outer wall of the rotating tube 12 is provided with anti-slip texture 13. The annular positioning seat 7 and the rotating tube 12 are an integrated structure.

[0029] Heating System Operation: After the power is turned on, the heating element 5 inside the oven body 1 starts working, generating heat through the current to heat the interior space of the oven, thus achieving the food baking function. The heating element 5 passes through the insulating sleeve 6, which is made of alumina ceramic material, possessing excellent high-temperature resistance and insulation properties. During installation, the heating element 5 is placed on the insulating support 4 after passing through the insulating sleeve 6. By rotating the rotating tube 12 on the annular positioning seat 7, the threaded connection characteristic is utilized to make the annular positioning seat 7 fit against the inner side of the insulating support 4, firmly fixing the insulating sleeve 6. Because the rotating tube 12 and the insulating sleeve 6 are engaged by threads, the annular positioning seat 7 fits tightly against the inner side of the insulating support 4. Through the combined action of thread friction and the resistance of the positioning seat, even during the transportation of the oven body 1, the annular positioning seat 7 will not loosen, ensuring the stable installation of the heating element 5 and guaranteeing that the heating element 5 is fixed in position and that heat is evenly distributed during the heating process.

[0030] Leakage Detection and Alarm Mechanism: Non-contact leakage detection sensors 8 are symmetrically installed on the inner wall of the oven body 1 to monitor changes in the electric field inside the oven in real time. Taking a common model such as the CT-100 non-contact leakage detection sensor 8 as an example, it is based on the principle of electromagnetic induction and can sensitively capture leakage currents in the milliampere range. When the heating element 5 leaks current due to aging or damage to the insulation layer, the leakage current will change the surrounding electric field. The non-contact leakage detection sensor 8 quickly detects this change and transmits the leakage signal to the leakage controller 10 at the top of the oven body 1 through the control line passing through the wiring conduit 9. The leakage controller 10 accurately analyzes and judges the signal. Once a leakage is confirmed, it immediately triggers the leakage alarm 11 to issue an audible and visual alarm, reminding the user to disconnect the power in time to avoid electric shock accidents.

[0031] The lower end of the oven body 1 is provided with multiple insulating bases 3.

[0032] The insulating base 3 at the bottom of the oven body 1 is made of a material such as phenolic resin, which has good insulation properties and mechanical strength, and insulates the oven from the ground.

[0033] The outer and inner walls of the oven body 1 are coated with an insulating coating.

[0034] The outer and inner walls of the oven body 1 are coated with an insulating layer, typically epoxy insulating varnish, forming a dense insulating protective film that effectively prevents current conduction. These multiple insulation protection measures work together to comprehensively ensure electrical safety during oven operation.

[0035] The inner side of the insulating bracket 4 is provided with multiple grooves, and the outer end of the annular positioning seat 7 can be inserted into the groove. As the rotating tube 12 rotates, the outer end of the annular positioning seat 7 can be inserted into the groove, which makes the heating tube 5 more securely installed.

[0036] The alumina ceramic insulating sleeve 6 is resistant to high temperatures and corrosion, enabling it to operate stably for extended periods in the high-temperature environment of the oven. The detection system, consisting of a non-contact leakage current detection sensor 8 and a leakage current controller 10, offers high sensitivity and rapid response. The insulating base 3 and the oven body 1 feature durable insulating coatings. These characteristics collectively ensure the oven's long-term stable operation, reduce the frequency of malfunctions, extend its service life, and enhance the user experience.

[0037] Insulating sleeve 6: Made of alumina ceramic, common models include 95% alumina ceramic insulating sleeve 6, with a volume resistivity ≥1×10⁻⁶. 12 With a dielectric constant of ≤9.5 (Ω·cm) and a dielectric constant (1MHz), it can maintain excellent insulation performance in high-temperature environments, effectively isolating the heating element 5 from the outside world and preventing leakage.

[0038] Non-contact leakage current detection sensor 8: Model such as CT-100, detection range 0-100mA, response time <0.1s, can quickly and accurately detect minute leakage current, providing reliable data support for leakage current protection.

[0039] Leakage controller 10: Model such as LK-200, has intelligent analysis and processing capabilities, can accurately judge the signals transmitted by the non-contact leakage detection sensor 8, and promptly trigger the leakage alarm 11 to ensure the reliable operation of the alarm system.

[0040] Insulating base 3: Made of phenolic resin, common models such as PF-01, with an insulation resistance ≥1×10⁻⁶. 10 Ω, with a compressive strength ≥100MPa, ensures both good insulation performance and stable support, ensuring the oven is placed securely.

[0041] Insulating coating: Typically, epoxy insulating varnish is used, such as model H01-1, with a coating thickness of 0.1-0.2mm and an insulation resistance ≥1×10⁻⁶. 9 Ω can effectively prevent the oven body 1 and the oven door 2 from becoming conductive, thus enhancing the overall insulation performance of the oven.

[0042] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A leakage-proof oven, comprising an oven body (1), wherein the front end of the oven body (1) is provided with a door (2), characterized in that: The oven body (1) is symmetrically provided with two insulating supports (4), and the insulating supports (4) are provided with multiple heating tubes (5); The insulating support (4) is also provided with a plurality of insulating sleeves (6) through which the heating tubes (5) pass. The two ends of the insulating sleeves (6) are provided with annular positioning seats (7). The annular positioning seats (7) are through the insulating sleeves (6) and threadedly connected to the two ends of the insulating sleeves (6). The annular positioning seats (7) fit against the inner side of the insulating support (4). Two non-contact leakage current detection sensors (8) are symmetrically arranged on the inner wall of the oven body (1). A leakage current controller (10) is provided at the upper end of the oven body (1). A leakage current alarm (11) is provided on the leakage current controller (10). A wiring pipe (9) is provided between the leakage current controller (10) and the non-contact leakage current detection sensor (8). The non-contact leakage current detection sensor (8) and the leakage current controller (10) are connected through a control line. The control line passes through the wiring pipe (9).

2. The leak-proof oven according to claim 1, characterized in that: The lower end of the oven body (1) is provided with multiple insulating bases (3).

3. The leak-proof oven according to claim 2, characterized in that: The outer wall of the heating element (5) is tightly fitted to the inner wall of the insulating sleeve (6).

4. The leak-proof oven according to claim 3, characterized in that: The annular positioning seat (7) is provided with a rotating tube (12) through which the insulating sleeve (6) passes, and the outer wall of the rotating tube (12) is provided with anti-slip texture (13).

5. The leak-proof oven according to claim 4, characterized in that: The annular positioning seat (7) and the rotating tube (12) are an integrated structure.

6. The leak-proof oven according to claim 5, characterized in that: The outer and inner walls of the oven body (1) are coated with an insulating coating.

7. The leak-proof oven according to claim 6, characterized in that: The inner side of the insulating bracket (4) is provided with multiple grooves, and the outer end of the annular positioning seat (7) can be inserted into the inside of the grooves.

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