Device for gently closing an oven door

Abstract

The present invention relates to a closing device (1) for closing a baking chamber (B) of an oven (O), comprising a door leaf (2) attached to a shaft (3) and adapted to rotate with the shaft (3), at least two bearings (4a, 4b) adapted to rotatably support the shaft (3), and a rotary brake (5) connected with the shaft (3) and adapted to allow unrestricted rotation of the shaft (3) in one rotational direction and to brake the rotation of the shaft (3) in the opposite rotational direction. This allows the closing movement of the door (2) to take place smoothly and slowly, without the door (2) hitting the walls or edges of the oven (O) and without causing unpleasant noise and / or even damage.

Description

Technical Field

[0001] This invention relates to a device for gently closing oven doors, particularly for cabinet ovens in large bakeries, bakeries and their branches. Background Technology

[0002] In the prior art, cabinet ovens are already known and have multiple baking chambers, typically one above another. The baking chambers have openings through which the respective chambers can be loaded, and the chamber doors are adapted to close these openings to minimize heat escape. The multiple baking chambers of a cabinet oven can be heated individually, allowing different baked goods to be baked in each chamber. Prior art DE 20 2017 101687 U1 is known, disclosing a cabinet oven with one or more stacked baking chambers. The baking chambers are defined by an outer shell located between two side walls, a rear wall, and a chamber door. This prior art document discloses a supply system for supplying air to each baking chamber through at least one side wall.

[0003] In existing cabinet ovens, multiple doors to multiple baking chambers are typically opened with a time delay or as simultaneously as possible to load or remove baking materials. In this technology, because these doors are mounted on a horizontal axis and slam against the oven walls when closed, a knocking sound often occurs. Such noise can be very unpleasant for the operator. Furthermore, the impact or vibration generated within the oven can cause baked goods to slip and can damage oven components, such as sensitive electronic parts. Summary of the Invention

[0004] The purpose of this invention is to provide a closing device for the baking chamber of an oven, which prevents the door from impacting the oven casing and producing a correspondingly loud knocking sound when closed. Furthermore, the purpose of this invention is to provide a closing device for an oven door that has better operability and enhanced user-friendliness.

[0005] To achieve the above-mentioned objectives, in one aspect, this application provides a closing device for the baking chamber of a closed oven, comprising: a door attached to a shaft and adapted to rotate with the shaft; at least two bearings adapted to rotatably support the shaft; and a rotary brake connected to the shaft and adapted to allow the shaft to rotate unrestricted in one rotational direction and brake the rotation of the shaft in the opposite rotational direction.

[0006] On the other hand, this application also provides a rotary brake for oven doors, preferably for use in oven doors of large bakeries, bakeries and branches.

[0007] A closing device for closing the baking chamber of an oven according to the invention includes a door panel attached to a shaft and arranged to rotate with the shaft. Therefore, as the shaft rotates, the door panel also moves between a closed state and an open state. Furthermore, the closing device includes two bearings adapted to rotatably support the shaft.

[0008] Furthermore, the closing device includes a rotary brake connected to a shaft and adapted to allow the shaft to rotate unrestricted in one direction while braking the rotational movement of the shaft in the opposite direction. Thus, the oven door can be opened in one direction (without additional force) but its movement slowed in the other direction. Without the rotary brake, the door's own weight would generate a strong torque, accelerating the door's rotation along the shaft and causing it to strike the oven casing at high speed. However, the rotary brake slows this movement to a very low speed, for example, through friction, allowing the door to close gently without affecting the oven. The rotary brake is preferably stable at high temperatures.

[0009] Preferably, the shaft is further provided with an actuating rod adapted to cause rotational movement of the shaft. This operating lever makes it easier for the user to open and close the door. Due to the rotary brake, the door will automatically begin closing and move slowly toward the oven by simply tapping the operating lever in the direction of closing the door.

[0010] More preferably, the translational or rotational motion of the actuator rod can be converted into the rotational motion of the shaft. Therefore, according to the user's requirements, different actuation possibilities of the actuator rod can be selected, which can be converted into the rotational motion of the shaft and thus cause the oven door to open and close.

[0011] Preferably, the door is adapted to close the oven's baking chamber from the front, i.e., it is attached to the front of the oven.

[0012] More preferably, in the closed state, the door is adapted to be close to the edge of the baking chamber opening and to close the baking chamber, with the door oriented vertically in the closed state. In the open state, the door is adapted to protrude into the baking chamber opening, and then the door is further preferably horizontally aligned and movable upward and / or downward relative to the baking chamber opening. This makes the baking chamber opening accessible and allows the baking chamber to be loaded with food without any problems.

[0013] More preferably, the shaft is positioned at the top or upper side of the baking chamber, such that the door extends horizontally into an opening at the top of the baking chamber when opened. An upward movement of the door opens the baking chamber, while a downward movement of the door closes the baking chamber.

[0014] This allows the door to be easily opened upwards and lowered downwards via a rotary brake, and this arrangement also facilitates the loading of the baking chamber.

[0015] More preferably, the rotary brake is attached to one of the bearings or to the outer casing of the oven. On the one hand, as mentioned above, the shaft is connected to the rotary brake, but the rotary brake also requires accessories to function.

[0016] Mounting it to a bearing or oven housing is an ergonomic and space-saving solution.

[0017] More preferably, the rotary brake is adapted to: not brake the movement of the shaft in the direction of the door moving from the closed state to the open state, i.e., not apply frictional force. The rotary brake is used to brake the movement of the shaft in the direction of the door moving from the open state to the closed state, i.e., reduce the closing speed, preferably keeping the closing speed as constant as possible, thereby making the oven door close smoothly.

[0018] More preferably, the rotary brake is configured such that when the door moves from the open state to the closed state, the rotational movement of the shaft can be caused by the weight of the door itself.

[0019] Preferably, the door panel is made of glass, and more preferably, it has a frame connected to a shaft. The glass door panel allows the user to view the interior of the oven, and the frame allows for a more stable structure and better locking possibilities.

[0020] Preferably, a locking device is also provided on the shaft, which is designed to detachably secure the shaft to at least one, preferably two, rotational positions. This can be, for example, a notch in the shaft or the like, against which a locking element (e.g., a ball) is spring-pressed.

[0021] This allows the door to be secured or fixed in a horizontally open position during loading or unloading of the baking chamber, so as not to interfere with the operator pushing food in or out of the baking chamber.

[0022] To close the door again, simply tap or slightly move the lever, and the locking mechanism will release the movement of the shaft. The door then moves downwards to a vertical position under its own weight, but the movement of the shaft and the door is then stopped by a rotary brake, causing the door to move slowly and without hitting the oven casing.

[0023] Using a rotary brake on the oven door is best suited for ovens in large bakeries, bakeries and their branches, as it allows the door to close gently without impact. Attached Figure Description

[0024] The preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0025] Figure 1 A front view of the closing device 1 according to the present invention is shown.

[0026] Figure 2 A side view of the closing device 1 according to the present invention is shown.

[0027] Figure 3 The front view of the rotary brake 5 is shown.

[0028] Figure 4 An axonometric view of the rotary brake 5 is shown.

[0029] Figure 5 A side view of the rotary brake 5 is shown.

[0030] Figure 6 An exploded view of the closing device 1 is shown, in which the door leaf 2 is in the open position.

[0031] Figure 7 An exploded view of the closing device 1 is shown, in which the door leaf 2 is in the closed position. Specific Implementation

[0033] Figure 1 A general view of the closing device 1 according to the invention is shown. Here, the door leaf 2 is suspended on the shaft 3, thereby providing a rotary brake 5 at one end of the shaft. An actuating rod 6 is provided on the side opposite to the rotary brake 5, by which the shaft can be moved and thus the door leaf can be moved.

[0034] Door 2 completely seals off the baking chamber B behind it (not shown here).

[0035] Figure 2 A side view of the closing device 1 according to the present invention is shown. A rotary brake 5 is mounted in a bearing 4a, which supports the shaft 5. An actuating rod 6 is also rotatably fixed to the shaft 3.

[0036] Figure 3 A detailed view of the rotary brake 5 is shown. Figure 3 The front view is shown. A square groove 52 is provided in the rotary brake to accommodate a pin of a corresponding shape or a shaft serving as a bushing for an adapter. The rotary brake 5 is also provided with two holes 51 through which the rotary brake 5 can be properly secured to the base.

[0037] Figure 4 A side view of the rotary brake 5 is shown. All components here are related to... Figure 2 The same as in the previous one. The portion with the groove 52 is rotatably mounted inside the rotary brake 5.

[0038] Figure 5A cross-sectional view of the rotary brake 5 is shown. It is evident here that it consists of two rotationally symmetrical parts 5a and 5b, the first element 5a being in the form of a flat disc, and the second element 5b being in the form of a slightly thicker cylindrical portion. It can be seen that a shaft can be inserted into a groove 52 to connect to the second element 5b, but essentially passes through elements 5a and 5b. Furthermore, two holes 51 provided in the first element 5a are shown for fixing to the base.

[0039] Figure 6 An exploded view of the locking device 1 is shown, with the door 2 in the open position.

[0040] Therefore, door 2 is in a horizontal position and extends into the baking chamber (not shown here).

[0041] Door leaf 2 is surrounded by frame 7, and door leaf 2 and frame 7 are respectively connected to shaft 3.

[0042] On one side, the shaft is supported by bearing 4a, which consists of two parts (the second bearing 4b is not shown here). A rotary brake 5 is located on the right side of bearing 4a, attached to the right side portion of bearing 4a. Because, as described above... Figure 2 As shown, the recess 52 of the rotary brake (not shown here) has an angular cross section, so a bushing 8 is also provided between the rotary brake and the shaft, which has a circular inner cross section but a square outer cross section, so that the bushing 8 can connect the shaft 3 and the rotary brake 5 to each other.

[0043] Figure 7 An exploded view of locking device 1 is shown again, this time in the closed position of the door. Door leaf 2 is in the vertical position. All other components are the same as in Figure 6.

[0044] The present invention is not limited to the embodiments described above. For example, the bearings may also be provided by other bearings 4a, 4b, and a design without bushing 8 is also possible if the rotary brake 5 or its recess 52 has a circular cross-section.

[0045] Furthermore, shaft 3 will have to be connected to the groove 52 in part 5b of rotary brake 5 in a different way, for example by interference fit or screw or bolt.

[0046] In addition, different rotary brakes 5 can be used, as long as they are able to rotate in one direction without braking, but slow down the rotation in the corresponding other direction.

[0047] Door 2 can also protrude from the outside of the oven rather than into the baking chamber when opened.

Claims

1. A closing device (1) for sealing the baking chamber (B) of an oven (O), comprising: Door leaf (2), which is attached to shaft (3) and adapted to rotate with said shaft (3); At least two bearings (4a, 4b) adapted to rotatably support the shaft (3); and A rotary brake (5) is connected to the shaft (3) and is adapted to allow the shaft (3) to rotate unrestricted in one rotational direction and to brake the rotation of the shaft (3) in the opposite rotational direction; wherein the rotary brake (5) is adjusted such that when the door leaf (2) moves from the open state to the closed state, the weight of the door leaf (2) causes the rotational movement of the shaft (3) and the door leaf (2); the shaft (3) is connected to a groove (52) in a portion (5b) of the rotary brake (5); Among them, an actuating rod (6) is also provided on the shaft (3), which is adapted to cause the shaft (3) to rotate; The translational or rotational motion of the actuator (6) is converted into the rotational motion of the shaft (3); A locking device (9) is also provided on the shaft (3), which is configured to releasably fix the shaft (3) in two rotational positions; A gentle push on the actuating rod (6) can release the locking state of the locking device (9), allowing the door leaf (2) to start closing under its own weight, while the rotary brake (5) brakes the movement. The door is adapted to close the baking chamber (B) of the oven (O) from the front. The door (2) in the closed state is adapted to be close to the edge of the opening of the baking chamber (B) and to close the opening, wherein the door (2) is vertical in the closed state, and the door (2) is adapted to extend into the opening of the baking chamber (B) in the open state, wherein the door (2) is horizontally oriented in the open state.

2. The closing device (1) according to claim 1, wherein, The shaft (3) is arranged on the upper side of the baking chamber (B).

3. The closing device (1) according to claim 1 or 2, wherein, The rotary brake (5) is fixed to one of the at least two bearings (4a, 4b) or to the outer shell of the oven (O).

4. The closing device (1) according to claim 1 or 2, wherein, The rotary brake (5) is adapted to: not to brake the movement of the shaft (3) in the direction of the door leaf (2) moving from the closed state to the open state, and to brake the movement of the shaft (3) in the direction of the door leaf (2) moving from the open state to the closed state.

5. The closing device (1) according to claim 1 or 2, wherein, The door panel (2) is made of glass and includes a frame (7) connected to the shaft (3).

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