Steam cabinet capable of automatically opening and closing door

Abstract

The utility model belongs to the technical field of food processing equipment, and mainly relates to a steam cabinet capable of automatically opening and closing a door, which comprises a cabinet body and a cabinet door, a connecting shaft is connected onto the cabinet door, a lifting component and a door opening and closing component are arranged on the cabinet body, and a door locking component is arranged between the cabinet body and the cabinet door. The door opening and closing assembly comprises a driving motor, a transmission lead screw, a sliding base, a driving rod, a fixing plate and a push-pull rod. A sliding assembly is arranged on the cabinet door. The driving motor and the fixed plate are fixed on the cabinet body, the output shaft is connected with the transmission lead screw, and the sliding seat is in threaded connection outside the transmission lead screw; the push-pull rod is provided with three connecting ends, one end of the driving rod is hinged to the sliding base, the other end is hinged to the first connecting end, and the second connecting end is hinged to the fixing plate. The sliding assembly comprises a sliding rail and a sliding block, and the third connecting end is hinged to the sliding block. The driving motor accurately controls the rotation angle of the motor by controlling the number and frequency of pulses so as to accurately control the opening and closing angles of the cabinet door.

Description

Technical Field

[0001] This utility model belongs to the technical field of food processing equipment, and mainly relates to a steamer that can automatically open and close its door. Background Technology

[0002] A steamer, also known as a steam oven or steam cabinet, is a kitchen appliance used to cook or heat food using steam. It is designed based on traditional steaming methods and is commonly used in restaurants, hotels, canteens, and other settings requiring large-scale food preparation.

[0003] When food is cooked in a steamer, the door temperature is high, and opening the door can easily cause burns, posing a high risk. Furthermore, this manual operation is inefficient. Existing steamers typically use the extension and retraction of a cylinder to open and close the door. For example, Chinese patent document CN215108132U discloses an automatic door opening and closing device for a steamer, including a lifting shaft, lifting components, a sliding sleeve, a locking plate, a locking cylinder, and an opening and closing mechanism. The opening and closing mechanism includes an opening and closing connecting plate, an opening and closing cylinder, and a retractable connecting shaft. The opening and closing cylinder is connected to the side wall of the steamer. One end of the connecting shaft is connected to the outer wall of the door, and the other end is connected to the opening and closing connecting plate. The opening and closing connecting plate includes a first end and a second end. The first end is fixedly connected to the connecting shaft, and the second end is fixedly connected to the extension shaft of the opening and closing cylinder. The opening and closing connecting plate also includes a rotation fulcrum located between the first end and the second end on the steamer door frame. The extension and retraction of the opening and closing cylinder can drive the opening and closing of the door.

[0004] The existing cabinet door opening uses a cylinder. Although the cylinder has a fast response speed and reduces the risk of burns, it is difficult to control the speed throughout the stroke, especially near the end of the stroke, where it is easy to generate a large impact force, which may damage the cabinet door and related components. The cylinder's movement speed and position control accuracy is relatively low, making it difficult to achieve precise control of the cabinet door opening angle and position. Utility Model Content

[0005] This invention provides a steamer that can automatically open and close its door, thereby solving the problem of difficulty in achieving precise control of the door opening angle and position in the prior art.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A steamer with an automatic door opening and closing mechanism includes a cabinet body and a door mounted on the cabinet body. A connecting shaft, capable of rotating and lifting relative to the cabinet body, is connected to the door. The cabinet body is equipped with a lifting assembly for driving the connecting shaft to rise and fall, and a door opening and closing assembly for driving the door to rotate. A door locking assembly is also provided between the cabinet body and the door. The door opening and closing assembly includes a drive motor, a transmission screw, a slide block, a drive rod, a fixing plate, and a push-pull rod. The door is equipped with a sliding assembly. The drive motor and the fixing plate are both fixed to the cabinet body, and their output shafts are connected to the transmission screw. The slide block is threaded onto the transmission screw. The push-pull rod has a first connecting end, a second connecting end, and a third connecting end. One end of the drive rod is hinged to the slide block, and the other end is hinged to the first connecting end. The second connecting end is hinged to the fixing plate. The sliding assembly includes a slide rail fixed to the door and a slider slidably mounted on the slide rail. The third connecting end is hinged to the slider.

[0008] Beneficial effects: This utility model uses a drive motor to drive a transmission screw to rotate. The transmission screw is threadedly connected to a slide block. When the transmission screw rotates, the slide block slides in the extension direction of the transmission screw. At the same time, the slide block drives the drive rod to move. The drive rod drives the push-pull rod to rotate around the fixed plate so that the push-pull rod pulls the slider. The slider slides on the slide rail and opens the cabinet door. Compared with the existing method of using a cylinder to open and close the cabinet door, the drive motor can precisely control the rotation angle and displacement of the motor by controlling the number and frequency of pulses, thus achieving precise control of the opening and closing angle of the steam cabinet door.

[0009] Furthermore, the fixed plate is also provided with a limiting plate, and a limiting hole is provided on the limiting plate. The driving rod passes through the limiting hole and can swing within the limiting hole.

[0010] Beneficial effects: The limiting elongated hole ensures the range of motion of the drive rod, that is, it determines the maximum opening angle of the cabinet door, preventing the cabinet door from opening too wide due to excessive movement angle and displacement of the drive rod.

[0011] Furthermore, the slide rails are arranged in parallel at intervals in the vertical direction, and a connecting rod extending in the vertical direction connects the sliders on the two slide rails. The third connecting end is hinged to the connecting rod.

[0012] Beneficial effect: The slide rail with two connecting rods moves more stably than a slide rail with only one connecting rod.

[0013] Furthermore, the push-pull rod includes a first segment, a second segment, and a third segment. The third segment is connected to the end of the second segment and is arranged at an obtuse angle to the second segment. The second connecting end is located on the second segment, and the third connecting end is located on the third segment. The first segment is connected to the second segment near the second connecting end. The first segment and the third segment are both located on the same side of the second segment, and there is an acute angle between the first segment and the second segment.

[0014] Furthermore, the cabinet has two doors, which are respectively located on opposite sides of the cabinet; the door opening and closing assembly has two sets.

[0015] Beneficial effects: Two cabinet doors are more conducive to transporting food into the cabinet than one cabinet door, reducing operation time, and the two cabinet doors are set on opposite sides of the cabinet, which is more aesthetically pleasing.

[0016] Furthermore, the two sets of door opening and closing components are located on the same side of the cabinet.

[0017] Beneficial effect: The appearance is neater.

[0018] Furthermore, the lifting assembly includes a first linear drive member and a crank plate fixed to the drive end of the first linear drive member. The crank plate is hinged to a connecting shaft, and the connecting shaft can rotate relative to the crank plate, while the crank plate can drive the connecting shaft to move up and down in the vertical direction.

[0019] Furthermore, the door locking assembly has multiple sets in the vertical direction.

[0020] Beneficial effects: Multiple locking components make the lock more secure and improve sealing.

[0021] Furthermore, each lock assembly includes a second linear drive fixed to the cabinet body, a baffle fixed to the drive end of the second linear drive, and a lock plate fixed to the cabinet door. When the cabinet door is closed, the cabinet door descends, which allows the lock plate to engage with the drive end of the second linear drive. The second linear drive retracts the baffle, which presses the lock plate firmly.

[0022] Furthermore, the door locking plate includes a first plate segment, a second plate segment, and a reinforcing rib plate located between the first plate segment and the second plate segment. The first plate segment is fixed to the cabinet door and perpendicular to the second plate segment. The lower end of the second plate segment is provided with a slot adapted to the driving end of the second linear drive member.

[0023] Beneficial effect: The presence of reinforcing ribs increases the strength of the connection between the first and second plate segments, making them less prone to breakage. Attached Figure Description

[0024] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0025] Figure 1 This utility model omits a lock state diagram that eliminates the need for a protective cover;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0028] Figure 4 This is a schematic diagram of the door lock plate.

[0029] Figure 5 This is a schematic diagram showing one of the cabinet doors of this utility model in an open state;

[0030] Figure 6 for Figure 5 Enlarged diagram of point C in the middle.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Cabinet body; 2. Connecting shaft; 3. Locking cylinder; 4. Locking plate; 5. Cabinet door; 6. Slide rail; 7. Protective cover; 8. Turning plate; 9. Lifting cylinder; 10. Rotating seat; 11. Fixed seat; 12. Stepper motor; 13. L-shaped drive plate; 14. Drive rod; 15. Limiting elongated hole; 16. Limiting plate; 17. Slide plate; 18. Slide groove; 19. Second connecting end; 20. Lead screw housing; 21. Slider; 22. Connecting rod; 23. Third connecting end; 24. First connecting end; 25. Fixed plate; 26. First rod segment; 27. Third rod segment; 28. Second rod segment; 29. ​​Baffle; 30. Reinforcing rib plate; 31. First plate segment; 32. Second plate segment; 33. Slot; 34. Push-pull rod. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] The following describes various non-limiting embodiments of this utility model. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Embodiment 1 of a steamer with an automatic door opening and closing mechanism provided by this utility model:

[0036] like Figure 1 and Figure 2As shown, a steamer with an automatic door opening and closing mechanism includes a cabinet body 1 and two doors 5 mounted on the cabinet body 1, located on opposite front and rear sides of the cabinet body 1. Each door 5 is connected to a connecting shaft 2 that allows it to rotate and move up and down relative to the cabinet body 1. Each door 5 also has a sliding assembly. The cabinet body 1 has two sets of lifting assemblies for driving the connecting shaft 2 to move up and down, and two sets of door opening and closing assemblies for driving the door 5 to rotate. Both sets of door opening and closing assemblies are located on the left side of the cabinet body 1. A door locking assembly is also provided between the cabinet body 1 and the door 5. For ease of description, the door 5 located on the front side of the cabinet body 1 will be described below as an example.

[0037] In this embodiment, the cabinet 1 has a cuboid shape. For ease of description, the height direction of the cabinet 1 is defined as the up-down direction, the length direction of the cabinet 1 is defined as the front-back direction, and the width direction of the cabinet 1 is defined as the left-right direction.

[0038] like Figure 1 and Figure 2 As shown, the rotating end of the cabinet door 5 is provided with four fixed seats 11 arranged at equal intervals in the vertical direction. The connecting shaft 2 is fixed between the four fixed seats 11. The cabinet body 1 is provided with four rotating seats 10 arranged at equal intervals in the vertical direction. Each rotating seat 10 is provided with a through hole extending in the vertical direction. The connecting shaft 2 passes through the four through holes coaxially at the same time. The connecting shaft 2 can not only rotate in the through holes, but also move up and down along the axis of the through holes.

[0039] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, each door opening and closing assembly includes a drive motor, a lead screw, a slide block, a drive rod 14, a fixing plate 25, and a push-pull rod 34. The drive motor and fixing plate 25 are both fixed to the cabinet 1, and the output shaft of the drive motor is fixedly connected to the lead screw. The cabinet 1 has a lead screw housing 20, and the lead screw is rotatably mounted inside the lead screw housing 20, extending in the front-to-back direction. The slide block is located at the outer end of the lead screw housing 20 and includes a sliding plate 17 and an L-shaped drive plate 13 connected together. The sliding plate 17 is threadedly connected to the lead screw. The lead screw housing 20 has a groove 18 extending in the front-to-back direction and adapted to the sliding plate 17. The sliding plate 17 and the groove 18... 8. Sliding assembly, the outer side of the drive motor and the slide is also provided with a protective cover 7 fixed on the cabinet 1. The fixing plate 25 is located on the front side of the protective cover 7. A limiting plate 16 is provided between the protective cover 7 and the fixing plate 25. The limiting plate 16 is connected to the protective cover 7. The limiting plate 16 and the protective cover 7 are provided with a limiting elongated hole 15 that extends and communicates in the left and right direction. One end of the drive rod 14 is hinged to the L-shaped drive plate 13, and the other end passes through the limiting elongated hole 15 and can swing in the limiting elongated hole 15 when the L-shaped drive plate 13 moves. The push-pull rod 34 has a first connecting end 24, a second connecting end 19, and a third connecting end 23. The first connecting end 24 is hinged to one end of the extension limiting elongated hole 15 of the drive rod 14, and the second connecting end 19 is hinged to the fixing plate 25. The push-pull rod 34 includes a first rod segment 26, a second rod segment 28, and a third rod segment 27. The third rod segment 27 is connected to the end of the second rod segment 28 and is arranged at an obtuse angle to the second rod segment 28. The second connecting end 19 is located on the second rod segment 28, and the third connecting end 23 is located on the third rod segment 27. The first rod segment 26 is connected to the second rod segment 28 near the second connecting end 19. The first rod segment 26 and the third rod segment 27 are both located on the same side of the second rod segment 28, and the first rod segment 26 and the second rod segment 28 form an acute angle. In this embodiment, the drive motor is a stepper motor 12.

[0040] like Figure 2 As shown, the sliding assembly includes a slide rail 6 fixed on the cabinet door 5 and a slider 21 slidably mounted on the slide rail 6. The slide rail 6 has two parallel slide rails extending along the width direction of the cabinet door 5 in the vertical direction. A connecting rod 22 extending in the vertical direction is connected between the two sliders 21. The third connecting end 23 is hinged to the connecting rod 22.

[0041] like Figure 1As shown, the lifting assembly includes a first linear drive and a crank plate 8 fixed to the drive end of the first linear drive. The crank plate 8 has an L-shaped structure. In this embodiment, the first linear drive is a lifting cylinder 9. The end of the crank plate 8 away from the lifting cylinder 9 is hinged to the top of the connecting shaft 2. The lifting cylinder 9 is located on the left side of the cabinet 1, and its piston rod is parallel to the connecting shaft 2. The connecting shaft 2 can rotate relative to the crank plate 8, and the crank plate 8 can drive the connecting shaft 2 to move up and down in the vertical direction. In other embodiments, the first linear drive can also be a first electric push rod.

[0042] like Figure 1 , Figure 3 and Figure 4 As shown, the door locking assembly has three sets evenly spaced in the vertical direction. Each set of door locking assemblies includes a second linear drive fixed to the front side of the cabinet 1 and arranged perpendicular to the cabinet 1, a baffle 29 fixed to the drive end of the second linear drive, and a door locking plate 4 fixed to the corresponding position on the cabinet door 5. In this embodiment, the second linear drive is a door locking cylinder 3. The door locking plate 4 includes a first plate segment 31, a second plate segment 32, and a reinforcing rib 30 located between the first plate segment 31 and the second plate segment 32. The first plate segment 31 is fixed to the cabinet door 5 and perpendicular to the second plate segment 32. The lower end of the second plate segment 32 is provided with a slot 33 adapted to the piston rod of the door locking cylinder 3. When the cabinet door 5 is closed, the cabinet door 5 descends, allowing the door locking plate 4 to engage with the piston rod of the door locking cylinder 3. The piston rod of the door locking cylinder 3 retracts, allowing the baffle 29 to press the door locking plate 4 tightly. In other embodiments, the number of door locking assemblies can be selected according to actual needs and is not limited to the three sets mentioned above.

[0043] The working process of this utility model is as follows:

[0044] When the cabinet door 5 of this utility model is opened, the piston rods of the sliding block, lifting cylinder 9, and locking cylinder 3 are all in the extended state, and the slider 21 is located on the right side of the slide rail 6. The closing and locking steps are as follows: the stepper motor 12 rotates, the sliding block drives the drive rod 14 to move backward, the drive rod 14 drives the push-pull rod 34 to rotate around the fixed plate 25, and the push-pull rod 34 pulls the connecting rod 22 to move closer to the cabinet body 1. During the movement, the connecting rod 22 slides on the slide rail 6, and at the same time, the connecting rod 22 drives the cabinet door 5 to close. When the sliding block is at the zero position, the cabinet door 5 is completely closed. After the cabinet door 5 is closed, the lifting cylinder 9 returns to the zero position, the crank plate 8 drives the connecting shaft 2 to move downwards, and the connecting shaft 2 drives the cabinet door 5 to move downwards until the locking plate 4 engages with the piston rod on the locking cylinder 3. Then, the piston rod of the lifting cylinder 9 retracts, and the baffle 29 presses the locking plate 4 to move backwards until the piston rod of the lifting cylinder 9 returns to the zero position, that is, the cabinet door 5 is locked. At this time, the slide, the piston rod of the lifting cylinder 9, and the piston rod of the locking cylinder 3 are all in the zero position, and the slider 21 is located on the left side of the slide rail 6. To open the cabinet door 5, simply follow the reverse steps.

[0045] Compared to existing methods that use cylinders to open and close cabinet doors 5, this invention allows for precise control of the opening and closing angles of the cabinet door 5 by controlling the number and frequency of pulses, thereby enabling accurate control of the rotation angle and displacement of the motor.

[0046] Embodiment 2 of the steamer with automatic door opening and closing provided by this utility model:

[0047] The main difference between this embodiment and Embodiment 1 is that in Embodiment 1, both the first and second linear drive components are cylinders. In this embodiment, the first and second linear drive components can also be electric actuators.

Claims

1. A steamer with an automatic door opening and closing mechanism, comprising a cabinet body and a door mounted on the cabinet body, wherein a connecting shaft capable of rotating and lifting relative to the cabinet body is connected to the door, the cabinet body is provided with a lifting assembly for driving the connecting shaft to rise and fall and a door opening and closing assembly for driving the door to rotate, and a door locking assembly is further provided between the cabinet body and the door, characterized in that, The door opening and closing assembly includes a drive motor, a transmission screw, a slide block, a drive rod, a fixing plate, and a push-pull rod, and the cabinet door is equipped with a sliding assembly; The drive motor and the fixing plate are both fixed on the cabinet, and the output shaft is connected to the transmission screw. The slide is threaded to the outside of the transmission screw. The push-pull rod has a first connecting end, a second connecting end and a third connecting end. One end of the drive rod is hinged to the slide, the other end is hinged to the first connecting end, and the second connecting end is hinged to the fixing plate. The sliding assembly includes a slide rail fixed to the cabinet door and a slider slidably mounted on the slide rail, and the third connecting end is hinged to the slider.

2. A steamer with an automatic door opening and closing mechanism according to claim 1, characterized in that, The fixed plate is also provided with a limiting plate, and a limiting hole is opened on the limiting plate. The driving rod passes through the limiting hole and can swing within the limiting hole.

3. A steamer with an automatic door opening and closing mechanism according to claim 2, characterized in that, The slide rails are arranged in parallel at intervals in the vertical direction. A connecting rod extending in the vertical direction connects the sliders on the two slide rails. The third connecting end is hinged to the connecting rod.

4. A steamer with an automatic door opening and closing mechanism according to claim 3, characterized in that, The push-pull rod includes a first segment, a second segment, and a third segment. The third segment is connected to the end of the second segment and is arranged at an obtuse angle to the second segment. The second connecting end is located on the second segment, and the third connecting end is located on the third segment. The first segment is connected to the second segment near the second connecting end. The first segment and the third segment are both located on the same side of the second segment, and there is an acute angle between the first segment and the second segment.

5. A steamer with an automatic door opening and closing mechanism according to claim 4, characterized in that, The cabinet has two doors, which are located on opposite sides of the cabinet body; the door opening and closing assembly has two sets.

6. A steamer with an automatic door opening and closing mechanism according to claim 5, characterized in that, The two sets of door opening and closing components are located on the same side of the cabinet.

7. A steamer with an automatic door opening and closing mechanism according to any one of claims 1-6, characterized in that, The lifting assembly includes a first linear drive and a crank plate fixed to the drive end of the first linear drive. The crank plate is hinged to a connecting shaft, and the connecting shaft can rotate relative to the crank plate, while the crank plate can drive the connecting shaft to move up and down in the vertical direction.

8. A steamer with an automatic door opening and closing mechanism according to any one of claims 1-6, characterized in that, The door locking assembly has multiple sets in the vertical direction.

9. A steamer with an automatic door opening and closing mechanism according to claim 8, characterized in that, Each locking assembly includes a second linear drive fixed to the cabinet body, a baffle fixed to the drive end of the second linear drive, and a locking plate fixed to the cabinet door. When the cabinet door is closed, the cabinet door descends, which allows the locking plate to engage with the drive end of the second linear drive. The second linear drive retracts the baffle, which presses the locking plate firmly.

10. A steamer with an automatically opening and closing door according to claim 9, characterized in that, The door lock plate includes a first plate segment, a second plate segment, and a reinforcing rib plate located between the first plate segment and the second plate segment. The first plate segment is fixed to the cabinet door and perpendicular to the second plate segment. The lower end of the second plate segment is provided with a slot adapted to the driving end of the second linear drive member.

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