Large kitchen exhaust inlet automatic opening and closing system based on smoke sensing function

Abstract

The utility model provides a large kitchen air suction opening automatic opening and closing system based on a smoke sensing function, which comprises a smoke exhaust hood, a plurality of blade units are arranged at the bottom of the smoke exhaust hood, a reset mechanism is arranged on one side of the bottom of the smoke exhaust hood, the bottom of the reset mechanism is arranged at one ends of the blade units, and the other end of the blade units is connected with the smoke exhaust hood. The range hood is characterized in that a reset mechanism is arranged in the range hood, a blade control mechanism is arranged below the reset mechanism, the bottom face of the blade control mechanism is arranged on one side of the inner bottom face of the range hood, and a plurality of sensing units are arranged on the inner side of the middle of the range hood. The multiple blade units are driven by the blade control mechanism to change the direction, so that the smoke exhaust amount is concentrated above a single cooking range, and the effect of automatically adjusting the smoke exhaust amount for a heavy oil smoke area is achieved; the directions of all the blades can be reset at a time through lifting of the reset mechanism; the whole system is simple in structure and convenient to operate, and the commercial smoke exhaust flexibility is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of commercial kitchen equipment, in particular to an automatic opening and closing system for large kitchen air intakes based on a smoke sensing function. Background Art

[0002] In commercial kitchens, the motor power of the suction equipment is specific, and the air intake can basically meet the requirements at the beginning. However, over time, the suction volume will gradually decrease due to motor power attenuation and other problems, which will especially affect the suction of oil smoke generated by the stove when cooking.

[0003] The prior art includes: a range hood, a control center and a main air inlet; and also includes: at least one additional air inlet, a connector, an oil fume duct and a first oil fume concentration sensor; wherein each additional air inlet is connected to at least one oil fume duct via a connector, and one additional air inlet corresponds to one connector; the oil fume duct is arranged above the cooking area in the kitchen, and one oil fume duct corresponds to one cooking area; the first oil fume concentration sensor is used to obtain oil fume concentration data for each cooking area; the control center is used to control the operation or stop of the range hood, control the opening and closing of at least one additional air inlet and control the opening and closing of the valve of each oil fume duct based on the oil fume concentration data of each cooking area.

[0004] Although the technical problem that smoke generated at multiple points in an open kitchen cannot be sucked away in time by the range hood in the prior art is alleviated, it is not possible to exhaust smoke from above individual stoves in a commercial kitchen. Utility Model Content

[0005] In response to the above problems, the present invention provides an automatic opening and closing system for large kitchen air intakes based on a smoke sensor function, the purpose of which is to solve the technical problem of exhausting smoke from above individual stoves in commercial kitchens.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic opening and closing system for large kitchen air intakes based on a smoke sensing function, comprising a smoke exhaust hood, a plurality of blade units being provided at the bottom of the smoke exhaust hood, a reset mechanism being provided on one side of the bottom of the smoke exhaust hood, the bottom of the reset mechanism being provided at one end of the plurality of blade units, a blade control mechanism being provided below the reset mechanism, the bottom surface of the blade control mechanism being provided on one side of the inner bottom surface of the smoke exhaust hood, and a plurality of sensing units being provided on the inner side of the middle portion of the smoke exhaust hood.

[0007] Furthermore, the blade unit includes a blade shaft, a blade body is provided in the middle of the blade shaft, both ends of the blade shaft are rotatably connected to blade fixing blocks, and multiple blade fixing blocks are respectively provided on both sides of the inner bottom surface of the smoke exhaust hood, one end of the blade shaft is coaxially connected to the blade control roller, and the outer side of the blade control roller is provided with anti-slip grooves.

[0008] Furthermore, the reset mechanism includes a blade positioning felt, which is arranged at the bottom of the blade pressure plate, and the top surface of the blade pressure plate is provided with a plurality of downward pressing movable units symmetrically arranged in pairs, the middle parts of the plurality of downward pressing movable units are threadedly connected to the middle part of the downward pressing control shaft, and the tops of the plurality of downward pressing movable units are slidably connected to the middle part of the downward pressing slide bar, and the two ends of the downward pressing control shaft are respectively rotatably connected to the lower part of the reset fixed block, and the plurality of reset fixed blocks are respectively arranged on the inner sides of the two ends of the smoke exhaust hood, and the two ends of the downward pressing slide bar are respectively arranged on the upper parts of the plurality of reset fixed blocks.

[0009] Furthermore, the downward-pressing movable unit includes an upper movable block, the two ends of the lower part of the upper movable block are respectively rotatably connected to the upper ends of the parallel rockers, the lower ends of the multiple parallel rockers are respectively rotatably connected to the two ends of the lower movable block, the bottom of the lower movable block is arranged on the top surface of the blade pressure plate, and tension springs are respectively provided on both sides of one end of the upper movable block, and the other ends of the multiple tension springs are respectively provided on both sides of the other end of the lower movable block.

[0010] Furthermore, a movable slide groove is provided on the top surface of the upper movable block, and the movable slide groove is slidably connected to the middle part of the downward slide bar. A threaded hole is provided in the middle part of the upper movable block, and the threaded hole is threadedly connected to the middle part of the downward control shaft.

[0011] Furthermore, a plurality of dual-axis motors are provided in the middle of the downward pressure control shaft, and the plurality of dual-axis motors are all provided in the middle of the downward pressure slide bar. A plurality of threaded rods are provided in the middle of the downward pressure control shaft, which are symmetrically arranged in pairs, and the plurality of threaded rods are respectively threadedly connected to the top of the downward pressure movable unit.

[0012] Furthermore, the blade control mechanism includes a control base, and control motors are respectively provided at both ends of the control base, and the output ends of multiple control motors are coaxially connected to the control screws, and the two ends of multiple control screws are respectively rotatably connected to the two ends of the control base, and the middle parts of multiple control screws are respectively threadedly connected to the middle parts of the control sliders, and the bottoms of multiple control sliders are respectively slidably connected to the middle parts of the control slides, and multiple control slides are respectively arranged in the middle part of the top surface of the control base, and the top surface of the control slider is provided with an anti-slip rubber block.

[0013] Furthermore, the sensing unit includes a smoke sensor and an infrared heat source sensor.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The stove with the largest amount of oil smoke is sensed by multiple sensing units, and the blade control mechanism drives multiple blade units to change direction, so that the exhaust volume is concentrated above a single stove, thereby achieving the effect of automatically adjusting the exhaust volume for heavy oil smoke areas; by lifting the reset mechanism, the direction of all blades can be reset at once; the entire system has a simple structure and is easy to operate, which greatly improves the flexibility of commercial smoke exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the front section of the internal structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the blade unit structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the split structure of the blade unit of the utility model;

[0021] Figure 6 This is a schematic diagram of the reset mechanism structure of the utility model;

[0022] Figure 7 This is a schematic diagram of the disassembly of the reset mechanism structure of the utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the downward pressing active unit of the utility model;

[0024] Figure 9 This is a schematic diagram of the structure of the blade control mechanism of the utility model;

[0025] Figure 10 This is a schematic diagram of the structure of the blade control mechanism of the utility model;

[0026] Figure 11 It is a schematic structural diagram of the sensing unit of the utility model.

[0027] In the figure: 1. Smoke exhaust hood; 2. Blade unit; 21. Blade shaft; 22. Blade body; 23. Blade fixing block; 24. Blade control roller; 3. Reset mechanism; 31. Blade positioning felt; 32. Blade pressure plate; 33. Down-pressing movable unit; 331. Upper movable block; 3311. Movable slide; 3312. Threaded hole; 332. Parallel rocker; 333. Lower movable block; 334. Tension spring; 34. Down-pressing control shaft; 341. Dual-axis motor; 342. Threaded rod; 35. Down-pressing slide; 36. Reset fixing block; 4. Blade control mechanism; 41. Control base; 42. Control motor; 43. Control screw; 44. Control slider; 45. Control slider; 46. Anti-slip rubber block; 5. Sensing unit; 51. Smoke sensor; 52. Infrared heat source sensor. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the utility model embodiments in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the utility model embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of utility model protection.

[0029] For details, please refer to the examples Figure 1-3 The automatic opening and closing system of the large kitchen air intake vent based on the smoke sensing function includes an exhaust hood 1, a plurality of blade units 2 are provided at the bottom of the exhaust hood 1, a reset mechanism 3 is provided on one side of the bottom of the exhaust hood 1, the bottom of the reset mechanism 3 is provided at one end of the plurality of blade units 2, a blade control mechanism 4 is provided below the reset mechanism 3, the bottom surface of the blade control mechanism 4 is provided on one side of the inner bottom surface of the exhaust hood 1, and a plurality of sensing units 5 are provided on the inner side of the middle part of the exhaust hood 1.

[0030] For details, please refer to the examples Figure 4-5 The blade unit 2 includes a blade shaft 21, a blade body 22 is provided in the middle of the blade shaft 21, both ends of the blade shaft 21 are rotatably connected to the blade fixing blocks 23, and multiple blade fixing blocks 23 are respectively provided on both sides of the inner bottom surface of the smoke exhaust hood 1. One end of the blade shaft 21 is coaxially connected to the blade control roller 24, and the outer side of the blade control roller 24 is provided with anti-slip grooves. This design allows the blade shaft 21 to be above the center of the blade body 22. When the reset mechanism 3 is lifted, the blade body 22 naturally droops and resets.

[0031] For details, please refer to the examples Figure 6-8The reset mechanism 3 includes a blade positioning felt 31, the blade positioning felt 31 is provided at the bottom of the blade pressure plate 32, the top surface of the blade pressure plate 32 is provided with a plurality of downward pressing movable units 33 symmetrically arranged in pairs, the middle parts of the plurality of downward pressing movable units 33 are threadedly connected to the middle part of the downward pressing control shaft 34, the tops of the plurality of downward pressing movable units 33 are slidably connected to the middle part of the downward pressing slide 35, the two ends of the downward pressing control shaft 34 are respectively rotatably connected to the lower part of the reset fixing block 36, the plurality of reset fixing blocks 36 are respectively provided on the inner sides of the two ends of the exhaust hood 1, and the two ends of the downward pressing slide 35 are respectively provided with a plurality of The upper part of the reset fixed block 36, the pressing movable unit 33 includes an upper movable block 331, the two ends of the lower part of the upper movable block 331 are respectively rotatably connected to the upper ends of the parallel rocking arms 332, the lower ends of the multiple parallel rocking arms 332 are respectively rotatably connected to the two ends of the lower movable block 333, the bottom of the lower movable block 333 is arranged on the top surface of the blade pressure plate 32, and tension springs 334 are respectively provided on both sides of one end of the upper movable block 331, and the other ends of the multiple tension springs 334 are respectively provided on both sides of the other end of the lower movable block 333, the top surface of the upper movable block 331 is provided with a movable sliding groove 3311, the movable The movable slide 3311 is slidably connected to the middle part of the downward slide 35, and a threaded hole 3312 is opened in the middle part of the upper movable block 331. The threaded hole 3312 is threadedly connected to the middle part of the downward control shaft 34. The middle part of the downward control shaft 34 is provided with multiple dual-axis motors 341. Multiple dual-axis motors 341 are all provided in the middle part of the downward slide 35. The middle part of the downward control shaft 34 is provided with multiple threaded rods 342 symmetrically arranged in pairs. Multiple threaded rods 342 are respectively threadedly connected to the top of the downward movable unit 33. This design uses the force of multiple tension springs 334 to make the downward movable unit 33 It is always in a downward pressure state, and the blade pressure plate 32 always presses the blade positioning felt 31 on the blade control roller 24 in the multiple blade units 2. When the blade body 22 rotates, the friction between the blade positioning felt 31 and the blade control roller 24 keeps the rotated blade body 22 at an unchanged angle after rotation; when the multiple dual-axis motors 341 drive the downward pressure control shaft 34 to rotate, the threaded rod 342 and the threaded hole 3312 are threadedly matched to drive the upper movable block 331 to move, and the downward pressure movable unit 33 symmetrically arranged through the connecting beam drives the blade pressure plate 32 to lift, and the blade positioning felt 31 leaves the multiple blade control rollers 24.

[0032] In the embodiment, a fume protection plate may be provided on the side and top surface of the reset mechanism 3 facing the blade to prevent the fume from affecting the mechanical structure.

[0033] For details, please refer to the examples Figure 9-10The blade control mechanism 4 includes a control base 41, and control motors 42 are respectively provided at both ends of the control base 41. The output ends of multiple control motors 42 are coaxially connected to control screws 43, and the two ends of multiple control screws 43 are respectively rotatably connected to the two ends of the control base 41. The middle parts of multiple control screws 43 are respectively threadedly connected to the middle parts of control sliders 44, and the bottoms of multiple control sliders 44 are respectively slidably connected to the middle parts of control slides 45. Multiple control slides 45 are respectively arranged in the middle part of the top surface of the control base 41, and the top surface of the control slider 44 is provided with an anti-slip rubber block 46. This design drives the control screws 43 to rotate respectively through two control motors 42, and then drives the two control sliders 44 to move along the direction. The two control sliders 44 move from both ends to the middle, and drive the blade control roller 24 to rotate when passing under the blade control roller 24 through the anti-slip rubber block 46, that is, drives the blade body 22 to turn to the direction of movement.

[0034] For details, please refer to the examples Figure 11 The sensing unit 5 includes a smoke sensor 51 and an infrared heat source sensor 52. This design uses the smoke sensor 51 and the infrared heat source sensor 52 to sense the stove head whose oil smoke volume exceeds a preset value.

[0035] In an embodiment, the system includes a manual mode: the blade control mechanism 4 is controlled by controlling the surface of the stove to direct the blade to a specified position; an automatic mode: after the sensing unit 5 senses that the amount of oil smoke exceeds a preset value, the blade control mechanism 4 is automatically controlled to direct the blade to a specified position; both modes will automatically control the reset mechanism 3 to lift up and the blade control mechanism 4 to reset after a preset time, thereby resetting the directions of all blades.

[0036] Principle of operation: Taking the automatic mode as an example, first, the smoke sensor 51 and the infrared heat source sensor 52 sense that the stove has an oil smoke volume exceeding the preset value; the two control motors 42 respectively drive the control screw 43 to rotate, and then drive the two control sliders 44 to move along the direction to the two sides of the corresponding stove. The two control sliders 44 drive the blade control roller 24 to rotate when passing under the blade control roller 24 through the anti-slip rubber block 46, that is, drive the blade body 22 to turn to the direction of the corresponding stove; the downward pressing active unit 33 is always in a downward pressing state through the force of multiple tension springs 334, and the blade pressure plate 32 always presses the blade positioning felt 31 on the blade control roller 24 in the multiple blade units 2. When the blade body 22 rotates At this time, the friction between the blade positioning felt 31 and the blade control roller 24 keeps the angle of the rotated blade body 22 unchanged after rotation; thereby, the output of the smoke exhaust equipment is concentrated above the corresponding stove; after a preset time, the automatic control reset mechanism 3 drives the downward pressure control shaft 34 to rotate through multiple dual-axis motors 341, and drives the upper movable block 331 to move through the threaded cooperation of the threaded rod 342 and the threaded hole 3312, and drives the blade pressure plate 32 to lift up through the downward pressure movable unit 33 symmetrically arranged on the connecting beam, and the blade positioning felt 31 leaves the multiple blade control rollers 24; because the blade shaft 21 is above the center of the blade body 22, when the reset mechanism 3 is lifted, the blade body 22 naturally droops and resets, and the process is completed.

[0037] Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic opening and closing system for large kitchen air intakes based on a smoke sensor function, comprising a smoke exhaust hood (1), characterized in that: The bottom of the smoke exhaust hood (1) is provided with a plurality of blade units (2), a reset mechanism (3) is provided on one side of the bottom of the smoke exhaust hood (1), the bottom of the reset mechanism (3) is provided at one end of the plurality of blade units (2), a blade control mechanism (4) is provided below the reset mechanism (3), the bottom surface of the blade control mechanism (4) is provided on one side of the inner bottom surface of the smoke exhaust hood (1), and a plurality of sensing units (5) are provided on the inner side of the middle portion of the smoke exhaust hood (1).

2. The large kitchen air intake automatic opening and closing system based on smoke sensing function according to claim 1 is characterized by: The blade unit (2) comprises a blade shaft (21), a blade body (22) is provided in the middle of the blade shaft (21), both ends of the blade shaft (21) are rotatably connected to blade fixing blocks (23), a plurality of blade fixing blocks (23) are respectively provided on both sides of the inner bottom surface of the smoke exhaust hood (1), one end of the blade shaft (21) is coaxially connected to a blade control roller (24), and an outer side of the blade control roller (24) is provided with anti-slip grooves.

3. The automatic opening and closing system for large kitchen air intake vents based on smoke sensing function according to claim 1 is characterized by: The reset mechanism (3) includes a blade positioning felt (31), the blade positioning felt (31) is arranged at the bottom of the blade pressure plate (32), the top surface of the blade pressure plate (32) is provided with a plurality of downward pressing movable units (33) symmetrically arranged in pairs, the middle parts of the plurality of downward pressing movable units (33) are all threadedly connected to the middle part of the downward pressing control shaft (34), the tops of the plurality of downward pressing movable units (33) are all slidably connected to the middle part of the downward pressing slide (35), the two ends of the downward pressing control shaft (34) are respectively rotatably connected to the lower part of the reset fixed block (36), the plurality of reset fixed blocks (36) are respectively arranged on the inner sides of the two ends of the smoke exhaust hood (1), and the two ends of the downward pressing slide (35) are respectively arranged on the upper parts of the plurality of reset fixed blocks (36).

4. The automatic opening and closing system for large kitchen air intakes based on smoke sensing according to claim 3 is characterized by: The downward-pressing movable unit (33) comprises an upper movable block (331), the lower ends of the upper movable block (331) are respectively rotatably connected to the upper ends of the parallel rockers (332), the lower ends of the plurality of parallel rockers (332) are respectively rotatably connected to the two ends of the lower movable block (333), the bottom of the lower movable block (333) is arranged on the top surface of the blade pressure plate (32), tension springs (334) are respectively provided on both sides of one end of the upper movable block (331), and the other ends of the plurality of tension springs (334) are respectively arranged on both sides of the other end of the lower movable block (333).

5. The automatic opening and closing system for large kitchen air intakes based on smoke sensing according to claim 4 is characterized in that: A movable slide groove (3311) is provided on the top surface of the upper movable block (331), and the movable slide groove (3311) is slidably connected to the middle part of the downward pressing slide bar (35). A threaded hole (3312) is provided in the middle part of the upper movable block (331), and the threaded hole (3312) is threadedly connected to the middle part of the downward pressing control shaft (34).

6. The automatic opening and closing system for large kitchen air intakes based on smoke sensing according to claim 3 is characterized by: A plurality of dual-axis motors (341) are provided in the middle of the downward pressure control shaft (34), and the plurality of dual-axis motors (341) are all provided in the middle of the downward pressure slide bar (35). A plurality of threaded rods (342) are symmetrically arranged in pairs in the middle of the downward pressure control shaft (34), and the plurality of threaded rods (342) are respectively threadedly connected to the top of the downward pressure movable unit (33).

7. The automatic opening and closing system for large kitchen air intakes based on smoke sensing according to claim 1 is characterized by: The blade control mechanism (4) includes a control base (41), and control motors (42) are respectively provided at both ends of the control base (41). The output ends of the plurality of control motors (42) are respectively coaxially connected to control screws (43). The two ends of the plurality of control screws (43) are respectively rotatably connected to the two ends of the control base (41). The middle parts of the plurality of control screws (43) are respectively threadedly connected to the middle parts of the control sliders (44). The bottom parts of the plurality of control sliders (44) are respectively slidably connected to the middle parts of the control slides (45). The plurality of control slides (45) are respectively provided at the middle parts of the top surface of the control base (41). The top surface of the control slider (44) is provided with an anti-slip rubber block (46).

8. The automatic opening and closing system for large kitchen air intakes based on smoke sensing according to claim 1 is characterized by: The sensing unit (5) comprises a smoke sensor (51) and an infrared heat source sensor (52).

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