Uniformly heated biscuit oven

Abstract

The invention relates to the technical field of ovens, in particular to an evenly-heated biscuit oven which comprises a body. A baking cavity is formed in the body; fixing rods are arranged on the two sides of the baking cavity; movable rods are arranged on the two sides of the baking cavity; the movable rod is provided with a guide rail along the length direction; one end of the movable rod is hinged to one end of the fixed rod; a heat-conducting seat is arranged at the other end of the fixing rod; a thermosensitive spring is arranged between the heat conducting seat and the other end of the movable rod; the body is provided with a trigger cavity; the heat conducting seat convexly extends into the trigger cavity; the trigger cavity is slidably provided with a radiator used for abutting against the heat conduction base in the horizontal direction. The trigger cavity is provided with a trigger assembly. According to the invention, the temperature-sensitive spring is in an alternating change of continuous heating and cooling, so that the movable rod drives the baking tray to swing up and down, oil in the baking tray flows from a high position to a low position under the action of gravity, and the oil is uniformly distributed on the surface of the baking tray through reverse overturning and backflow; therefore, the heating uniformity and the baking effect of food materials are improved.

Description

Technical Field

[0001] The invention relates to the technical field of ovens, in particular to a biscuit oven with uniform heating. Background Art

[0002] In the food processing industry, ovens are a common heating device used in a variety of applications, including baking bread, roasting meat, and preparing snacks. Their core operating principle is to generate a high-temperature environment through internal heating elements, allowing ingredients to mature and develop flavor through heat radiation and convection within a confined space.

[0003] However, existing ovens generally have limitations in their design, requiring the baking pan to be fixed during baking. The baking pan is typically placed directly on a fixed rack inside the oven, remaining stationary throughout the baking cycle. This structural design limits the natural flow of oil released by the ingredients during heating to a limited area at the bottom of the baking pan, making it difficult to form a uniform oil film across the surface.

[0004] As baking time increases, these problems become more severe. When grease accumulates in localized areas of the baking pan under the influence of gravity, the surface where the food contacts the pan becomes unevenly distributed. Some areas, covered with ample grease, are gently heated through heat conduction, while the oil film isolates the hot pan surface from burning. Other areas, however, may be depleted of grease, leading to direct contact between the food and the hot pan surface. This contact not only causes a sudden increase in the food's heating rate, leading to localized over-charring, but also damages the food's structure, resulting in a tough texture and rapid moisture loss, seriously affecting the final baking result. Summary of the Invention

[0005] The object of the present invention is to provide a biscuit oven with uniform heating in view of the above-mentioned deficiencies in the prior art.

[0006] The object of the present invention is achieved by the following technical solution: a biscuit oven with uniform heating, comprising a main body; a baking cavity is provided in the main body; fixed rods are provided on both sides of the baking cavity; movable rods are provided on both sides of the baking cavity; guide rails are provided on the movable rods along their lengths; one end of the movable rod is hinged to one end of the fixed rod; the other end of the fixed rod is provided with a heat-conducting seat; a heat-sensitive spring is provided between the heat-conducting seat and the other end of the movable rod;

[0007] The main body is provided with a trigger cavity; the heat-conducting seat protrudes into the trigger cavity; the trigger cavity is provided with a heat sink for abutting against the heat-conducting seat while sliding along the horizontal direction; and the trigger cavity is provided with a trigger assembly.

[0008] The present invention is further configured such that the trigger assembly includes an upper trigger block, an upper connecting block, a lower trigger block, a lower connecting block, and a connecting rod; the upper trigger block and the lower trigger block are respectively slidably disposed in the trigger cavity along a horizontal direction;

[0009] The middle part of the connecting rod is rotatably arranged in the trigger cavity; the upper connecting block is telescopically movably arranged at the top of the connecting rod; the lower connecting block is telescopically movably arranged at the bottom of the connecting rod; one end of the upper trigger block is hinged to the upper connecting block; the other end of the upper trigger block protrudes into the baking cavity; one end of the lower trigger block is hinged to the lower connecting block; the other end of the lower trigger block protrudes into the baking cavity; the other end of the upper trigger block and the other end of the lower trigger block are used to contact the movable rod.

[0010] The present invention is further configured such that the bottom of the radiator is provided with abutting boss for abutting against one end of the lower trigger block; one end of the upper trigger block is provided with a first magnet; and the top of the radiator is provided with a second magnet cooperating with the first magnet.

[0011] The present invention is further configured such that the other end of the upper trigger block and the other end of the lower trigger block are both provided with arc surfaces; and trigger springs are both provided between the upper connecting block and the connecting rod and between the lower connecting block and the connecting rod.

[0012] The present invention is further configured such that a front baffle is movably provided at one end of the guide rail; a rear baffle is movably provided at the other end of the guide rail;

[0013] The movable rod is provided with a strip groove along the length direction; a lower rack is slidably provided in the strip groove; the lower rack is connected to the rear baffle; a first spring is provided between the end of the lower rack close to the rear baffle and the strip groove;

[0014] The movable rod is provided with a gear for rotation; the movable rod is provided with an upper rack for sliding along the length direction; the lower rack is engaged with the bottom of the gear; the upper rack is engaged with the top of the gear;

[0015] A linkage assembly is provided between the upper rack and the front baffle.

[0016] The present invention is further configured such that the linkage assembly includes a first push rod and a second push rod; one end of the first push rod is fixedly connected to the upper rack; the other end of the first push rod is telescopically movably arranged at one end of the second push rod; the other end of the second push rod is hinged to the front baffle; a second spring is provided between the other end of the first push rod and one end of the second push rod.

[0017] The present invention is further configured such that a horizontal groove and a vertical groove are provided at one end of the guide rail; the horizontal groove is connected to the vertical groove; the front baffle is provided with front wheels and rear wheels; the front wheels and rear wheels are movably arranged between the horizontal groove and the vertical groove.

[0018] The present invention is further configured such that the bar groove is provided with a limit block for lifting movement; the limit block is provided with a limit pin for telescopic movement; the outer wall of the lower rack is provided with a limit groove; and the limit pin is movably arranged in the limit groove.

[0019] The present invention is further configured as follows: the limit groove includes a first inclined limit groove and a second inclined limit groove; one end of the first inclined limit groove is connected to one end of the second inclined limit groove; the other end of the first inclined limit groove is arranged at the top of the other end of the second inclined limit groove; the other end of the first inclined limit groove is inclined downward toward one end of the first inclined limit groove and is provided with a first reverse limit groove; the other end of the second inclined limit groove is inclined upward toward one end of the second inclined limit groove and is provided with a second reverse limit groove; one end of the first reverse limit groove is connected to the other end of the first inclined limit groove; one end of the second reverse limit groove is connected to the other end of the second inclined limit groove; the other end of the first reverse limit groove is connected to the other end of the second reverse limit groove.

[0020] The present invention is further configured such that the depth of one end of the first inclined limit groove is greater than the depth of one end of the second inclined limit groove; the depth of the other end of the first inclined limit groove is less than the depth of one end of the first reverse limit groove; the depth of the other end of the second inclined limit groove is greater than the depth of one end of the second reverse limit groove; and a locking pit is provided between the other end of the first reverse limit groove and the other end of the second reverse limit groove.

[0021] The beneficial effects of the present invention are as follows: the present invention uses the thermal spring to alternate between continuous heating and cooling, so that the movable rod drives the baking tray to swing up and down, so that the oil in the baking tray flows from high to low under the action of gravity, and then reverses and flows back, so as to achieve uniform distribution of the oil on the surface of the baking tray, thereby improving the heating uniformity and baking effect of the food. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention after the fixed rod and the movable rod are hidden;

[0025] Figure 4 is a cross-sectional view of the present invention;

[0026] Figure 5 yes Figure 4 A partial enlarged view of part A in the middle;

[0027] Figure 6 This is a schematic diagram of the structure of the fixed rod and the movable rod in the present invention;

[0028] Figure 7 is a cross-sectional view of the movable rod of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the present invention after the movable rod hides the lower rack;

[0030] Figure 9 is a schematic structural diagram of the first rack of the present invention;

[0031] Wherein: 1. Main body; 11. Baking chamber; 12. Trigger chamber; 2. Fixed rod; 3. Movable rod; 31. Guide rail; 32. Strip groove; 33. Horizontal groove; 34. Vertical groove; 4. Heat conducting seat; 41. Thermal spring; 42. Radiator; 43. Abutment boss; 44. Second magnet; 5. Connecting rod; 51. Upper trigger block; 52. Upper connecting block; 53. Lower trigger block; 54. Lower connecting block; 55. Trigger spring; 56. First Magnet; 57, arc surface; 6, lower rack; 61, rear baffle; 62, first spring; 63, gear; 64, connecting bar; 7, upper rack; 71, first push rod; 72, second push rod; 74, front baffle; 75, front wheel; 76, rear wheel; 8, limit block; 81, limit pin; 91, first tilt limit slot; 92, second tilt limit slot; 93, first reverse limit slot; 94, second reverse limit slot; 95, locking pit. DETAILED DESCRIPTION

[0032] The present invention is further described with reference to the following examples.

[0033] Depend on Figures 1 to 9It can be seen that the uniformly heated biscuit oven described in this embodiment includes a main body 1; a baking cavity 11 is provided in the main body 1; fixed rods 2 are provided on both sides of the baking cavity 11; movable rods 3 are provided on both sides of the baking cavity 11; the movable rods 3 are provided with guide rails 31 along the length direction; one end of the movable rod 3 is hinged to one end of the fixed rod 2; a heat-conducting seat 4 is provided at the other end of the fixed rod 2; a thermal spring 41 is provided between the heat-conducting seat 4 and the other end of the movable rod 3; the main body 1 is provided with a trigger cavity 12; the heat-conducting seat 4 protrudes into the trigger cavity 12; the trigger cavity 12 slides in the horizontal direction and is provided with a radiator 42 for abutting against the heat-conducting seat 4; the trigger cavity 12 is provided with a trigger assembly. The present embodiment describes a uniformly heated biscuit oven, wherein the trigger assembly includes an upper trigger block 51, an upper connecting block 52, a lower trigger block 53, a lower connecting block 54 and a connecting rod 5; the upper trigger block 51 and the lower trigger block 53 are respectively slidably arranged in the trigger cavity 12 along the horizontal direction; the middle part of the connecting rod 5 is rotatably arranged in the trigger cavity 12; the upper connecting block 52 is telescopically movable and arranged at the top of the connecting rod 5; the lower connecting block 54 is telescopically movable and arranged at the bottom of the connecting rod 5; one end of the upper trigger block 51 is hinged to the upper connecting block 52; the other end of the upper trigger block 51 protrudes into the baking cavity 11; one end of the lower trigger block 53 is hinged to the lower connecting block 54; the other end of the lower trigger block 53 protrudes into the baking cavity 11; the other end of the upper trigger block 51 and the other end of the lower trigger block 53 are used to contact the movable rod 3. In this embodiment of a uniformly heated biscuit oven, the bottom of the heat sink 42 is provided with a supporting boss 43 for abutting against one end of a lower trigger block 53; one end of the upper trigger block 51 is provided with a first magnet 56; and the top of the heat sink 42 is provided with a second magnet 44 that cooperates with the first magnet 56. In this embodiment of a uniformly heated biscuit oven, the other ends of the upper trigger block 51 and the lower trigger block 53 are both provided with arcuate surfaces 57, wherein the arcuate surfaces 57 facilitate contact with the movable rod 3; and trigger springs 55 are provided between the upper connecting block 52 and the connecting rod 5, and between the lower connecting block 54 and the connecting rod 5.

[0034] Specifically, when using the uniformly heated biscuit oven described in this embodiment, the baking tray is first placed on one end of the guide rail 31, and then inserted along the guide rail 31 so that the two sides of the baking tray are respectively fixed in the guide rails 31 of the movable rods 3 on both sides of the baking cavity 11, and then the oven is closed and started.

[0035] During the operation of the oven, as the temperature of the oven rises, the thermistor spring 41 gradually stretches due to the heat, thereby pushing the movable rod 3 to swing upward until the movable rod 3 contacts the upper trigger block 51. The movable rod 3 pushes the upper trigger block 51 to move into the trigger chamber 12. Under the linkage action of the upper connecting block 52, the connecting rod 5 and the lower connecting block 54, the lower trigger block 53 is driven to move toward the baking chamber 11. At this time, since the upper trigger block 51 is close to the top of the radiator 42, under the action of the first magnet 56 and the second magnet 44, the radiator 42 slides in the direction close to the upper trigger block 51, so that the bottom of the radiator 42 is against the thermal seat 4. At this time, the radiator 42 can dissipate heat for the thermal seat 4 and the thermistor spring 41.

[0036] As the temperature of the thermistor spring 41 drops, the thermistor spring 41 gradually contracts, causing the movable rod 3 to swing downward until the movable rod 3 contacts the lower trigger block 53, and the movable rod 3 pushes the lower trigger block 53 to move into the trigger chamber 12. Under the linkage action of the upper connecting block 52, the connecting rod 5 and the lower connecting block 54, the upper trigger block 51 is driven to move toward the baking chamber 11, and the first magnet 56 is separated from the second magnet 44. At the same time, one end of the lower trigger block 53 pushes against the boss 43 to move, thereby causing the radiator 42 to slide away from the upper trigger block 51, so that the bottom of the radiator 42 is separated from the thermal seat 4.

[0037] By repeating the above steps, the thermosensitive spring 41 is in a state of continuous alternation of heating and cooling, so that the movable rod 3 drives the baking tray to swing up and down, so that the oil in the baking tray flows from high to low under the action of gravity, and then reverses and flows back to achieve uniform distribution of the oil on the surface of the baking tray, thereby improving the uniformity of heating of the food and the baking effect.

[0038] The present embodiment describes a uniformly heated biscuit oven, wherein one end of the guide rail 31 is movably provided with a front baffle 74; the other end of the guide rail 31 is movably provided with a rear baffle 61; the movable rod 3 is provided with a strip groove 32 along the length direction; the strip groove 32 is slidably provided with a lower rack 6; the lower rack 6 is connected to the rear baffle 61 through a connecting bar 64; a first spring 62 is provided between the end of the lower rack 6 close to the rear baffle 61 and the strip groove 32; the movable rod 3 is rotatably provided with a gear 63; the movable rod 3 is slidably provided with an upper rack 7 along the length direction; the lower rack 6 is meshed with the bottom of the gear 63; the upper rack 7 is meshed with the top of the gear 63; a linkage component is provided between the upper rack 7 and the front baffle 74.

[0039] Specifically, in the uniformly heated biscuit oven described in this embodiment, the baking tray is first placed at one end of the guide rail 31, and then inserted along the guide rail 31. The baking tray pushes the rear baffle 61 to move toward the other end of the guide rail 31 until it moves to the preset position. The front baffle 74 abuts against the front end of the baking tray, thereby fixing the baking tray with the cooperation of the front baffle 74 and the rear baffle 61.

[0040] The present embodiment describes a uniformly heated biscuit oven, wherein the linkage assembly includes a first push rod 71 and a second push rod 72; one end of the first push rod 71 is fixedly connected to the upper rack 7; the other end of the first push rod 71 is telescopically movably arranged at one end of the second push rod 72; the other end of the second push rod 72 is hinged to the front baffle 74; a second spring is provided between the other end of the first push rod 71 and one end of the second push rod 72; the second spring is not drawn in the figure; the present embodiment describes a uniformly heated biscuit oven, wherein one end of the guide rail 31 is provided with a horizontal slot 33 and a vertical slot 34; the horizontal slot 33 is connected to the vertical slot 34; the front baffle 74 is provided with a front wheel 75 and a rear wheel 76; the front wheel 75 and the rear wheel 76 are movably arranged between the horizontal slot 33 and the vertical slot 34. The present embodiment describes a uniformly heated biscuit oven, in which the strip groove 32 is provided with a limit block 8 for lifting and lowering movement; the limit block 8 is provided with a limit pin 81 for telescopic movement; a third spring is provided between the limit pin 81 and the limit block 8, which is not shown in the figure; a limit groove is provided on the outer wall of the lower rack 6; and the limit pin 81 is movably provided in the limit groove. The present embodiment describes a uniformly heated biscuit oven, wherein the limiting grooves include a first inclined limiting groove 91 and a second inclined limiting groove 92; one end of the first inclined limiting groove 91 is connected to one end of the second inclined limiting groove 92; the other end of the first inclined limiting groove 91 is arranged at the top of the other end of the second inclined limiting groove 92; the other end of the first inclined limiting groove 91 is inclined downward toward one end of the first inclined limiting groove 91 and is provided with a first reverse limiting groove 93; the other end of the second inclined limiting groove 92 is inclined upward toward one end of the second inclined limiting groove 92 and is provided with a second reverse limiting groove 94; one end of the first reverse limiting groove 93 is connected to the other end of the first inclined limiting groove 91; one end of the second reverse limiting groove 94 is connected to the other end of the second inclined limiting groove 92; the other end of the first reverse limiting groove 93 is connected to the other end of the second reverse limiting groove 94. In the present embodiment, the biscuit oven with uniform heating is described, wherein the depth of one end of the first inclined limit groove 91 is greater than the depth of one end of the second inclined limit groove 92; the depth of the other end of the first inclined limit groove 91 is less than the depth of one end of the first reverse limit groove 93; the depth of the other end of the second inclined limit groove 92 is greater than the depth of one end of the second reverse limit groove 94; and a locking pit 95 is provided between the other end of the first reverse limit groove 93 and the other end of the second reverse limit groove 94.

[0041] Specifically, in the uniformly heated biscuit oven described in this embodiment, before the baking tray is placed, the limit pin 81 is located at one end of the first inclined limit groove 91. At this time, the front wheel 75 and the rear wheel 76 are both located in the horizontal groove 33, and the front baffle 74 does not block one end of the guide rail 31.

[0042] When the baking tray is placed on one end of the guide rail 31 and then inserted along the guide rail 31, the baking tray pushes the rear baffle 61 to move toward the other end of the guide rail 31. At the same time, the lower rack 6 overcomes the action of the first spring 62 and moves toward the other end of the guide rail 31, and the limit pin 81 moves along the first inclined limit groove 91. In addition, during the movement of the lower rack 6, the second rack is driven to move in the opposite direction by the action of the gear 63. The second rack, the first push rod 71, the second push rod 72 and the front baffle 74 all move along one end of the guide rail 31. At this time, since the top surface of the baking tray is in contact with the front baffle 74, the front baffle 74 cannot be flipped, that is, the front wheel 75 and the rear wheel 76 cannot move. When the rear baffle 74 is in the vertical groove 34, the second spring is in a compressed state; until the baking tray pushes the rear baffle 61 to move to the other end of the guide rail 31, the limit pin 81 falls from the other end of the first inclined limit slot 91 into the first reverse limit slot 93. At the same time, the baking tray has completely entered the guide rail 31, and the top surface of the baking tray no longer abuts against the front baffle 74. Under the reset action of the second spring, the front wheel 75 and the rear wheel 76 move into the vertical groove 34, and the front baffle 74 flips ninety degrees. In addition, under the action of the first spring 62, the limit pin 81 moves to the locking pit 95 to lock the lower rack 6. At this time, under the action of the front baffle 74 and the rear baffle 61, the baking tray is clamped.

[0043] When the baking tray needs to be taken out, the baking tray is pushed forcefully toward the other end of the guide rail 31, so that the limit pin 81 moves along the second reverse limit groove 94 until the limit pin 81 falls into the second inclined limit groove 92. Then, under the action of the first spring 62, the lower rack 6 is reset, and at the same time, the second rack and the front baffle 74 are reset, so that the baking tray can be taken out.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A biscuit oven with uniform heating, characterized by: The invention comprises a main body (1); a baking cavity (11) is provided in the main body (1); fixed rods (2) are provided on both sides of the baking cavity (11); movable rods (3) are provided on both sides of the baking cavity (11); the movable rods (3) are provided with guide rails (31) along the length direction; one end of the movable rod (3) is hinged to one end of the fixed rod (2); a heat conducting seat (4) is provided at the other end of the fixed rod (2); a heat-sensitive spring (41) is provided between the heat conducting seat (4) and the other end of the movable rod (3); The body (1) is provided with a trigger cavity (12); the heat conducting seat (4) protrudes into the trigger cavity (12); the trigger cavity (12) is provided with a heat sink (42) for abutting against the heat conducting seat (4) when sliding in a horizontal direction; and the trigger cavity (12) is provided with a trigger assembly.

2. The uniformly heated biscuit oven according to claim 1, characterized in that: The trigger assembly comprises an upper trigger block (51), an upper connecting block (52), a lower trigger block (53), a lower connecting block (54) and a connecting rod (5); the upper trigger block (51) and the lower trigger block (53) are respectively slidably arranged in the trigger cavity (12) along a horizontal direction; The middle part of the connecting rod (5) is rotatably arranged in the trigger cavity (12); the upper connecting block (52) is telescopically arranged at the top of the connecting rod (5); the lower connecting block (54) is telescopically arranged at the bottom of the connecting rod (5); one end of the upper trigger block (51) is hinged to the upper connecting block (52); the other end of the upper trigger block (51) protrudes into the baking cavity (11); one end of the lower trigger block (53) is hinged to the lower connecting block (54); the other end of the lower trigger block (53) protrudes into the baking cavity (11); the other end of the upper trigger block (51) and the other end of the lower trigger block (53) are used to contact the movable rod (3).

3. The uniformly heated biscuit oven according to claim 2, characterized in that: The bottom of the heat sink (42) is provided with abutting boss (43) for abutting against one end of the lower trigger block (53); one end of the upper trigger block (51) is provided with a first magnet (56); and the top of the heat sink (42) is provided with a second magnet (44) that cooperates with the first magnet (56).

4. The uniformly heated biscuit oven according to claim 2, characterized in that: The other end of the upper trigger block (51) and the other end of the lower trigger block (53) are both provided with arc surfaces (57); and a trigger spring (55) is provided between the upper connecting block (52) and the connecting rod (5) and between the lower connecting block (54) and the connecting rod (5).

5. The uniformly heated biscuit oven according to claim 1, characterized in that: A front baffle (74) is movably provided at one end of the guide rail (31); a rear baffle (61) is movably provided at the other end of the guide rail (31); The movable rod (3) is provided with a strip groove (32) along the length direction; a lower rack (6) is slidably provided in the strip groove (32); the lower rack (6) is connected to the rear baffle (61); a first spring (62) is provided between the end of the lower rack (6) close to the rear baffle (61) and the strip groove (32); The movable rod (3) is provided with a gear (63) when it rotates; the movable rod (3) is provided with an upper rack (7) when it slides along the length direction; the lower rack (6) is meshed with the bottom of the gear (63); the upper rack (7) is meshed with the top of the gear (63); A linkage assembly is provided between the upper rack (7) and the front baffle (74).

6. The uniformly heated biscuit oven according to claim 5, characterized in that: The linkage assembly includes a first push rod (71) and a second push rod (72); one end of the first push rod (71) is fixedly connected to the upper rack (7); the other end of the first push rod (71) is telescopically movably arranged on one end of the second push rod (72); the other end of the second push rod (72) is hinged to the front baffle (74); and a second spring is provided between the other end of the first push rod (71) and one end of the second push rod (72).

7. The uniformly heated biscuit oven according to claim 6, characterized in that: One end of the guide rail (31) is provided with a horizontal groove (33) and a vertical groove (34); the horizontal groove (33) is connected to the vertical groove (34); the front baffle (74) is provided with a front wheel (75) and a rear wheel (76); the front wheel (75) and the rear wheel (76) are movably arranged between the horizontal groove (33) and the vertical groove (34).

8. The uniformly heated biscuit oven according to claim 7, characterized in that: The bar-shaped groove (32) is provided with a limit block (8) for lifting movement; the limit block (8) is provided with a limit pin (81) for telescopic movement; the outer wall of the lower rack (6) is provided with a limit groove; the limit pin (81) is movably arranged in the limit groove.

9. The uniformly heated biscuit oven according to claim 8, characterized in that: The limiting groove comprises a first inclined limiting groove (91) and a second inclined limiting groove (92); one end of the first inclined limiting groove (91) is communicated with one end of the second inclined limiting groove (92); the other end of the first inclined limiting groove (91) is arranged at the top of the other end of the second inclined limiting groove (92); the other end of the first inclined limiting groove (91) is inclined downwardly toward one end of the first inclined limiting groove (91) and is provided with a first reverse limiting groove (93); the other end of the second inclined limiting groove (92) is inclined upwardly toward one end of the second inclined limiting groove (92) and is provided with a second reverse limiting groove (94); one end of the first reverse limiting groove (93) is communicated with the other end of the first inclined limiting groove (91); one end of the second reverse limiting groove (94) is communicated with the other end of the second inclined limiting groove (92); the other end of the first reverse limiting groove (93) is communicated with the other end of the second reverse limiting groove (94).

10. The uniformly heated biscuit oven according to claim 9, characterized in that: The depth of one end of the first inclined limiting groove (91) is greater than the depth of one end of the second inclined limiting groove (92); the depth of the other end of the first inclined limiting groove (91) is less than the depth of one end of the first reverse limiting groove (93); the depth of the other end of the second inclined limiting groove (92) is greater than the depth of one end of the second reverse limiting groove (94); and a locking pit (95) is provided between the other end of the first reverse limiting groove (93) and the other end of the second reverse limiting groove (94).

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