Gel oven with temperature difference

Abstract

The utility model relates to a gel oven with temperature difference, be equipped with drying cavity in the box, the drying cavity bottom is the tray with upper and lower through -hole, the drying cavity bottom sets up lower temperature sensor, the drying cavity top sets up upper temperature sensor, the drying cavity arbitrary side outside non -box door is equipped with normal temperature air duct, and the normal temperature air duct inboard sets up a plurality of normal temperature air -outlet that communicates drying cavity up and down, and the normal temperature air duct is equipped with heating air duct outside, and heating air duct bottom communicates to the tray lower space, and heating air duct and / or tray bottom set up electric heating, the box upper end sets up the air inlet fan, and the air inlet fan air inlet is connected with normal temperature air duct and heating air duct respectively, and the box center above drying cavity sets up the exhaust fan that communicates drying cavity, and the exhaust fan is through the exhaust air duct and divides two roads, and one road connects heating air duct, and the other road connects the box outside, its simple structure can effectively monitor the temperature in the oven, and control the temperature difference formed by upper and lower, ensure solidification from bottom to top, improve solidification quality.

Description

Technical Field

[0001] This utility model relates to an oven, specifically a gel oven with temperature difference. Background Technology

[0002] In recent years, with the development of the power industry, customers have increasingly higher requirements for the appearance quality of epoxy casting products. However, in actual production, the appearance of the products, especially the appearance problems caused by pores generated in the epoxy casting gel, remains a pressing issue for many manufacturers. Currently, gel ovens used for epoxy casting products mostly employ a single-direction air duct with bottom hot air, maintaining a consistent temperature throughout the oven. This results in a disordered and uncontrollable curing sequence within the epoxy mixture, preventing the expulsion of gases during curing and leading to numerous internal pores, which negatively impacts curing performance and the quality of current transformer products. Summary of the Invention

[0003] This invention provides a gel oven with temperature difference that has a simple structure, can effectively monitor the temperature inside the oven, control the temperature difference between the top and bottom to ensure that curing proceeds from bottom to top, and improves the curing quality.

[0004] The technical solution adopted by this utility model is as follows: a gel drying oven with temperature difference, including a box body, an insulation layer on the inner wall of the box body, and a drying cavity sealed by the upper door of the box body. The drying cavity is characterized by: a tray with upper and lower through holes at the bottom; a lower temperature sensor at the bottom of the drying cavity; an upper temperature sensor at the top of the drying cavity; ambient temperature air ducts on any one, two, or three sides of the drying cavity (excluding the door); multiple ambient temperature air inlets connecting to the drying cavity on the inner side of the ambient temperature air ducts; a heating air duct outside the ambient temperature air ducts; the bottom of the heating air duct connecting to the lower space of the tray; and electric heating provided in the heating air duct and / or the bottom of the tray; an air intake fan at the upper end of the box body; the air intake fan connecting to both the ambient temperature air duct and the heating air duct; and an exhaust fan connected to the drying cavity at the center of the box body above the drying cavity; the exhaust fan is divided into two paths via the exhaust air duct, one path connecting to the heating air duct and the other path exiting the box body.

[0005] A gel drying oven with temperature difference includes a box body, an insulation layer on the inner wall of the box body, and a drying cavity sealed by an upper door inside the box body. The oven cavity is characterized by: a tray with upper and lower through holes at the bottom; a lower temperature sensor at the bottom of the drying cavity; an upper temperature sensor at the top of the drying cavity; ambient temperature air ducts and heating air ducts on any one, two, or three sides of the drying cavity (excluding the door); multiple ambient temperature air inlets connecting to the drying cavity on the inner side of the ambient temperature air ducts; the bottom of the heating air duct connecting to the space below the tray; and electric heating elements installed in the heating air ducts and / or at the bottom of the tray. An air intake fan is installed at the upper end of the box body, with air intake connected to both the ambient temperature air duct and the heating air duct. An exhaust fan connected to the drying cavity is installed at the center of the box body above the drying cavity, and the exhaust fan is split into two paths via the exhaust air duct, one path connecting to one or more heating air ducts, and the other path exiting the box body.

[0006] The ambient temperature air vent is equipped with an openable vent cover.

[0007] The air intake fan is connected to the heating air duct via a one-way valve.

[0008] The other path of the exhaust duct is connected to the outside of the housing via a pressure safety valve.

[0009] A heat insulation layer is provided between the normal temperature air duct and the heated air duct.

[0010] The beneficial effects of this utility model are: 1. The multi-sided ambient temperature air duct, combined with an openable vent sealing plate design, allows for selection of the ambient temperature air inlet based on the height of the epoxy resin casting mold on the tray. With dual temperature sensors (upper and lower), the coverage and flow rate of the ambient temperature air in the upper part of the drying cavity can be flexibly adjusted. Combined with precise temperature control of the heating air duct, the temperature difference between the upper and lower parts is stable and controllable, completely solving the porosity problem caused by disordered curing sequence of epoxy mixtures, significantly improving the product appearance qualification rate. The ambient temperature air ducts can be installed on any of the multiple sides of the drying cavity (excluding the door side), and with multiple sets of ambient temperature air outlets, it can adapt to epoxy resin casting molds of different sizes and shapes, eliminating the need to adjust the air duct structure for specific molds and meeting diverse production needs.

[0011] 2. The exhaust duct recirculation design circulates some hot air to the heating duct, recovering waste heat and reducing the energy consumption of electric heating; the one-way valve prevents hot air from flowing back into the heating duct, ensuring heating efficiency and reducing energy consumption by more than 30% compared to traditional direct-vent ovens.

[0012] 3. The one-way valve blocks the reverse flow of airflow to avoid temperature fluctuations in the drying chamber; the pressure safety valve automatically adjusts the pressure inside the chamber to prevent curing defects caused by excessive or insufficient pressure; the through-hole design of the tray ensures uniform hot air penetration, a stable heating gradient between the upper and lower parts of the mold, and a significant improvement in the consistency of product curing. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the structure of this utility model; In the diagram: 1. Box body; 2. Insulation layer; 3. Drying cavity; 4. Tray; 5. Lower temperature sensor; 6. Upper temperature sensor; 7. Normal temperature air outlet; 8. Air inlet fan; 9. One-way valve; 10. Heating air duct; 11. Electric heating; 12. Normal temperature air duct; 13. Exhaust fan; 14. Exhaust air duct; 15. Pressure safety valve; 16. Epoxy casting mold. Detailed Implementation

[0014] The following explanation, in conjunction with the accompanying drawings, will provide further details.

[0015] Figure 1 As shown: A gel drying oven with temperature difference is provided. An insulation layer 2 is provided on the inner wall of the oven body 1. A drying cavity 3, sealed by a front door, is located inside the oven body 1. The bottom of the drying cavity 3 is a tray 4 with upper and lower through holes. A lower temperature sensor 5 is installed at the bottom of the drying cavity 3, and an upper temperature sensor 6 is installed at the top of the drying cavity 3. Room temperature air ducts 12 are provided on both the left and right sides of the drying cavity 3. Multiple room temperature air vents 7, connected to the drying cavity 3, are arranged on the inner side of the room temperature air ducts 12. Each room temperature air vent 7 has an openable vent seal, allowing selection of which vent 7 at which height to open to supply room temperature air based on the height of the epoxy casting mold 16 inside the drying cavity 3. A heating air duct 10 is provided outside the air duct 12. The bottom of the heating air duct 10 is connected to the lower space of the tray 4. An electric heater 11 is provided inside the heating air duct 10. Two air inlet fans 8 are symmetrically arranged on the left and right sides of the upper end of the box 1. The air inlet fans 8 are connected to the normal temperature air duct 12 and the heating air duct 10 on their respective sides. An exhaust fan 13 connected to the drying cavity 3 is provided in the center of the box 1 above the drying cavity 3. Exhaust air ducts 14 are connected to the left and right sides of the exhaust fan 13. Each exhaust air duct 14 is divided into two paths. One path is connected to the heating air duct 10 on its corresponding side, and the other path is connected to the outside of the box through the pressure safety valve 15 on its corresponding side.

[0016] In this embodiment, only the left and right sides of the housing 1 are selected to set up normal temperature air ducts and heating air ducts for air intake, and the same can be set up on the rear side of the housing; in this embodiment, only the corresponding left and right side air ducts are selected to be equipped with air intake fans separately, or the main fan can be used to distribute the air intake, and the technical means are conventional means of air supply technology.

[0017] Based on this embodiment, the air intake fan 8 is connected to the heating air duct 10 via a one-way valve 9.

[0018] Based on this embodiment, a heat insulation layer can also be provided between the normal temperature air duct and the heated air duct.

[0019] Based on this embodiment, the ambient temperature air duct and the heating air duct outside the drying cavity can be set without distinguishing between inside and outside, and can be set on either side of the drying cavity at intervals or in a concentrated manner. Any simple improvement to the setting of the two air ducts is within the protection scope of this utility model.

Claims

1. A gel drying oven with temperature difference, comprising a box body, an insulation layer on the inner wall of the box body, and a drying cavity sealed by a door on the upper part of the box body, characterized in that: The bottom of the drying cavity is a tray with upper and lower through holes. A lower temperature sensor is installed at the bottom of the drying cavity, and an upper temperature sensor is installed at the top of the drying cavity. A normal temperature air duct is provided on any one, two, or three sides of the drying cavity that are not the door. Multiple normal temperature air outlets are provided on the inner side of the normal temperature air duct, which are connected to the drying cavity. A heating air duct is provided outside the normal temperature air duct. The bottom of the heating air duct is connected to the space under the tray. Electric heating is provided in the heating air duct and / or the bottom of the tray. An air intake fan is provided at the top of the box. The air intake fan is connected to the normal temperature air duct and the heating air duct. An exhaust fan connected to the drying cavity is provided at the center of the box above the drying cavity. The exhaust fan is divided into two paths through the exhaust air duct. One path is connected to the heating air duct, and the other path is connected to the outside of the box.

2. A gel drying oven with temperature difference, comprising a box body, an insulation layer on the inner wall of the box body, and a drying cavity sealed by a door on the upper part of the box body, characterized in that: The bottom of the drying cavity is a tray with upper and lower through holes. A lower temperature sensor is installed at the bottom of the drying cavity, and an upper temperature sensor is installed at the top of the drying cavity. A normal temperature air duct and a heating air duct are provided on any one, two, or three sides of the drying cavity that are not the door. Multiple normal temperature air outlets connected to the drying cavity are provided on the inner side of the normal temperature air duct. The bottom of the heating air duct is connected to the space under the tray. Electric heating is provided in the heating air duct and / or the bottom of the tray. An air intake fan is provided at the top of the box. The air intake fan is connected to the normal temperature air duct and the heating air duct. An exhaust fan connected to the drying cavity is provided at the center of the box above the drying cavity. The exhaust fan is divided into two paths through the exhaust air duct. One path is connected to one or more heating air ducts, and the other path is connected to the outside of the box.

3. A gel drying oven with temperature difference according to claim 1 or 2, characterized in that: The ambient temperature air vent is equipped with an openable vent cover.

4. A gel drying oven with temperature difference according to claim 1 or 2, characterized in that: The air intake fan is connected to the heating air duct via a one-way valve.

5. A gel drying oven with temperature difference according to claim 1 or 2, characterized in that: The other path of the exhaust duct is connected to the outside of the housing via a pressure safety valve.

6. A gel drying oven with temperature difference according to claim 1 or 2, characterized in that: A heat insulation layer is provided between the ambient temperature air duct and the heated air duct.

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