A dual hot air circulation oven

Abstract

The utility model discloses a kind of double hot air circulation ovens, including mounting seat, the top of mounting seat is fixedly connected with oven, one side of oven is connected with sealing door by hinge, the inboard of sealing door is fixedly connected with silica gel sealing ring and inflatable sealing air bag, the inboard of sealing door and one side of oven are all fixedly connected with magnetic metal sealing pressure strip, two magnetic metal sealing pressure strips are attracted, inflatable sealing air bag is located between silica gel sealing ring and magnetic metal sealing pressure strip, the top outer wall of oven is fixedly connected with air pump. The utility model carries out basic sealing between sealing door and oven by silica gel sealing ring, then, by air pump, inert gas is input into inflatable sealing air bag, to further seal between sealing door and oven, to ensure sealing property when silica gel sealing ring appears aging, deformation, to avoid heat loss in oven.

Description

Technical Field

[0001] This utility model relates to the field of industrial oven technology, and in particular to a dual hot air circulation oven. Background Technology

[0002] An oven is a sealed appliance used to bake food or dry products. Generally, electric ovens have heating elements at the top and bottom of the cavity. The energy emitted by the heating elements is partly exchanged with the food through thermal radiation, and partly heated by the surrounding air through convection.

[0003] A search revealed a Chinese patent with publication number CN213811415U, which discloses a hot air circulation oven. Although the patent achieves the effect of hot air circulation, keeping the temperature inside the baking cavity constant and stable, and ensuring temperature uniformity, the silicone sealing ring is prone to aging and deformation as the usage time increases, leading to a decrease in sealing performance and heat loss inside the oven. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing silicone sealing rings are prone to aging and deformation, leading to a decrease in sealing performance, and to propose a dual hot air circulation oven.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dual hot air circulation oven includes a mounting base, with an oven fixedly connected to the top of the mounting base. A sealing door is connected to one side of the oven via a hinge. A silicone sealing ring and an inflatable sealing airbag are fixedly connected to the inner side of the sealing door. Magnetic metal sealing strips are fixedly connected to both the inner side of the sealing door and one side of the oven, and the two magnetic metal sealing strips attract each other. The inflatable sealing airbag is located between the silicone sealing ring and the magnetic metal sealing strips. An air pump is fixedly connected to the top outer wall of the oven. A spring tube is sealed and inserted into the air inlet end of the air pump, and the other end of the spring tube is inserted into the inflatable sealing airbag.

[0007] Furthermore, an installation plate is fixedly connected to one side of the outer wall of the oven, and an air inlet box is fixedly connected to the top of the installation plate. A return pipe is sealed and inserted into one side of the air inlet box, and the other end of the return pipe is inserted into the oven.

[0008] Furthermore, an exhaust fan is fixedly connected inside the air intake box, and a first air outlet pipe is sealed and inserted into the other side of the air intake box. A diverter pipe is sleeved at the other end of the first air outlet pipe, and a heating wire is installed inside the diverter pipe. Both ends of the diverter pipe are sleeved with connecting pipes, and both ends between the two connecting pipes are sleeved with a second air outlet pipe. The second air outlet pipe is located inside the oven, and multiple hollow plates are inserted into the outer wall of the second air outlet pipe. Multiple air outlet holes are provided on the top of the hollow plates.

[0009] Furthermore, a control panel and a thermometer are fixedly connected to one side of the mounting base, and the control panel is electrically connected to the exhaust fan, heating wire and air pump.

[0010] Furthermore, the bottom of the mounting base is fixedly connected with multiple rollers.

[0011] Furthermore, an observation window is embedded in one side of the sealed door, and a handle is fixedly connected to the outer wall of one side of the sealed door.

[0012] Furthermore, a latch is fixedly connected between the sealed door and the oven.

[0013] Furthermore, multiple placement plates are snapped between the inner walls of both sides of the oven, and the top of the placement plates is provided with through holes.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. A silicone sealing ring is used to create a basic seal between the oven door and the oven. Then, an inert gas is introduced into the inflatable sealing airbag by an air pump to further seal the oven door and the oven. This ensures the seal even if the silicone sealing ring ages or deforms, thus preventing heat loss from inside the oven.

[0016] 2. The exhaust fan draws the gas from inside the oven into the air inlet box through the return pipe, and then into the distribution pipe through the first air outlet pipe. The heating wire is activated, and the gas is heated by the heating wire. The heated gas is then fed into the hollow plate through the connecting pipe and the second air outlet pipe, and then into the oven through the air outlet, thereby heating the product. This achieves dual hot air circulation heating, which ensures uniform heating of the product. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a dual hot air circulation oven proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a dual hot air circulation oven proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the heating tube structure of a dual hot air circulation oven proposed in this utility model;

[0020] Figure 4 This is an enlarged structural diagram of the cabinet door portion of a dual hot air circulation oven proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of the exploded structure of the cabinet door of a dual hot air circulation oven proposed in this utility model.

[0022] In the diagram: 1. Mounting base; 101. Control panel; 102. Thermometer; 103. Roller; 2. Oven; 201. Sealed door; 202. Observation window; 203. Lock; 3. Placement plate; 4. Mounting plate; 5. Air inlet box; 6. Exhaust fan; 7. First air outlet pipe; 8. Diverter pipe; 9. Heating wire; 10. Connecting pipe; 11. Second air outlet pipe; 12. Hollow plate; 13. Air outlet; 14. Return pipe; 15. Silicone sealing ring; 16. Inflatable sealing airbag; 17. Magnetic metal sealing strip; 18. Air pump; 19. Spring tube. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-5 A dual hot air circulation oven includes a mounting base 1, an oven 2 is fixed to the top of the mounting base 1 by bolts, a sealing door 201 is connected to one side of the oven 2 by a hinge, a silicone sealing ring 15 and an inflatable sealing airbag 16 are glued to the inner frame of the sealing door 201, and the silicone sealing ring 15 provides a basic seal between the sealing door 201 and the oven 2.

[0025] Magnetic metal sealing strips 17 are glued to the inside of the sealed door 201 and one side of the oven 2. The two magnetic metal sealing strips 17 attract each other and close the sealed door 201 tightly. The inflatable sealing airbag 16 is located between the silicone sealing ring 15 and the magnetic metal sealing strips 17.

[0026] The silicone sealing ring 15 can be made of polyimide silicone rubber or PFA-coated silicone. The inflatable sealing airbag 16 is made of PET or TPU, both of which have high heat resistance. The magnetic metal sealing strip 17 can be made of H-type magnetic sealing strip, coated magnetic metal sealing strip, or modified PVC and permanent magnet composite strip, which have good heat resistance.

[0027] An air pump 18 is fixed to the top outer wall of the oven 2 by bolts. A spring tube 19 is sealed and inserted into the air inlet end of the air pump 18. The other end of the spring tube 19 is inserted into the inflatable sealing air bag 16. Inert gas is introduced into the inflatable sealing air bag 16 through the air pump 18, thereby further sealing the sealing door 201 and the oven 2.

[0028] A mounting plate 4 is fixed to one side of the outer wall of the oven 2 by bolts. An air inlet box 5 is fixed to the top of the mounting plate 4 by bolts. An air inlet hole is provided on the air inlet box 5. A return pipe 14 is sealed and inserted into one side of the air inlet box 5. The other end of the return pipe 14 is inserted into the oven 2. An exhaust fan 6 is fixed inside the air inlet box 5 by bolts. A first exhaust pipe 7 is sealed and inserted into the other side of the air inlet box 5. A diverter pipe 8 is sleeved at the other end of the first exhaust pipe 7. A heating wire 9 is provided inside the diverter pipe 8. The power cord of the heating wire 9 passes out of the diverter pipe 8.

[0029] Both ends of the diversion pipe 8 are fitted with connecting pipes 10, and both ends between the two connecting pipes 10 are fitted with second air outlet pipes 11. The second air outlet pipe 11 is located inside the oven 2. Multiple hollow plates 12 are inserted into the outer wall of the second air outlet pipe 11. Multiple air outlet holes 13 are provided on the top of the hollow plates 12. The hot gas in the oven 2 is drawn into the air inlet box 5 through the return pipe 14 by the exhaust fan 6, and then input into the diversion pipe 8 through the first air outlet pipe 7. The heating wire 9 is activated, and the gas is circulated and heated by the heating wire 9. The heated gas is input into the hollow plate 12 through the connecting pipe 10 and the second air outlet pipe 11, and then input into the oven 2 through the air outlet holes 13, thereby heating the product. After that, the gas in the oven 2 is drawn into the air inlet box 5 through the return pipe 14 by the exhaust fan 6, thereby realizing dual hot air circulation heating.

[0030] A control panel 101 and a thermometer 102 are fixed to one side of the mounting base 1 by bolts, so as to facilitate observation of the temperature inside the oven 2. The control panel 101 is electrically connected to the exhaust fan 6, the heating wire 9 and the air pump 18. Multiple rollers 103 are fixed to the bottom of the mounting base 1 by bolts. Brakes are provided on the rollers 103 to facilitate the movement and placement of the oven 2.

[0031] An observation window 202 is embedded in one side of the sealed door 201. A handle is fixed to the outer wall of one side of the sealed door 201 by bolts. A latch 203 is fixed between the sealed door 201 and the oven 2 by bolts, and the sealed door 201 is locked by the latch 203.

[0032] The inner walls on both sides of the oven 2 are equipped with a slide rack, on which multiple placement plates 3 are attached by a sliding snap-fit ​​mechanism. The top of the placement plate 3 is provided with a through hole so that hot air can pass through the through hole to heat the product. The number and placement position of the placement plates 3 can be selected according to the actual situation.

[0033] The working principle of this embodiment is as follows: When in use, first, open the sealing door 201, then place the product on the placement plate 3, and then close the sealing door 201. At this time, the two magnetic metal sealing strips 17 attract each other to close the sealing door 201 tightly, and the lock 203 locks the sealing door 201. The silicone sealing ring 15 provides a basic seal between the sealing door 201 and the oven 2. Then, the air pump 18 is started by controlling the control panel 101. The air pump 18 introduces inert gas into the inflatable sealing airbag 16, thereby further sealing the sealing door 201 and the oven 2.

[0034] Then, the exhaust fan 6 operates, drawing some air and gas from inside the oven 2 into the air inlet box 5 via the return pipe 14, and then into the distribution pipe 8 via the first outlet pipe 7. The heating wire 9 is activated, heating the gas. The heated gas is then fed into the hollow plate 12 via the connecting pipe 10 and the second outlet pipe 11, and then into the oven 2 via the outlet hole 13, heating the product from both above and below, thus achieving dual hot air circulation heating. Afterward, the hot gas in the oven 2 is drawn into the air inlet box 5 via the return pipe 14 through the exhaust fan 6, and some atmospheric air is also drawn into the air inlet box 5 for reheating, thereby achieving the heating of the product.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dual hot air circulation oven, comprising a mounting base (1), an oven (2) fixedly connected to the top of the mounting base (1), and a sealing door (201) connected to one side of the oven (2) via a hinge, characterized in that, The inner side of the sealing door (201) is fixedly connected with a silicone sealing ring (15) and an inflatable sealing airbag (16). The inner side of the sealing door (201) and the side frame of the oven (2) are both fixedly connected with magnetic metal sealing strips (17). The two magnetic metal sealing strips (17) attract each other. The inflatable sealing airbag (16) is located between the silicone sealing ring (15) and the magnetic metal sealing strips (17). The top outer wall of the oven (2) is fixedly connected with an air pump (18). The air inlet end of the air pump (18) is sealed with a spring tube (19). The other end of the spring tube (19) is inserted into the inflatable sealing airbag (16).

2. The dual hot air circulation oven according to claim 1, characterized in that, An installation plate (4) is fixedly connected to one side of the outer wall of the oven (2), and an air inlet box (5) is fixedly connected to the top of the installation plate (4). A return pipe (14) is sealed and inserted into one side of the air inlet box (5), and the other end of the return pipe (14) is inserted into the oven (2).

3. A dual hot air circulation oven according to claim 2, characterized in that, An exhaust fan (6) is fixedly connected inside the air intake box (5). A first exhaust pipe (7) is sealed and inserted into the other side of the air intake box (5). A diverter pipe (8) is sleeved at the other end of the first exhaust pipe (7). A heating wire (9) is installed inside the diverter pipe (8). A connecting pipe (10) is sleeved at both ends of the diverter pipe (8). A second exhaust pipe (11) is sleeved at both ends between the two connecting pipes (10). The second exhaust pipe (11) is located inside the oven (2). Multiple hollow plates (12) are inserted into the outer wall of the second exhaust pipe (11). Multiple air outlets (13) are provided on the top of the hollow plates (12).

4. A dual hot air circulation oven according to claim 1, characterized in that, A control panel (101) and a thermometer (102) are fixedly connected to one side of the mounting base (1). The control panel (101) is electrically connected to the exhaust fan (6), heating wire (9) and air pump (18).

5. A dual hot air circulation oven according to claim 1, characterized in that, The bottom of the mounting base (1) is fixedly connected to multiple rollers (103).

6. A dual hot air circulation oven according to claim 1, characterized in that, An observation window (202) is embedded in one side of the sealed door (201), and a handle is fixedly connected to the outer wall of one side of the sealed door (201).

7. A dual hot air circulation oven according to claim 1, characterized in that, A latch (203) is fixedly connected between the sealed door (201) and the oven (2).

8. A dual hot air circulation oven according to claim 1, characterized in that, Multiple placement plates (3) are snapped between the inner walls of both sides of the oven (2), and the top of the placement plates (3) is provided with through holes.

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