Air regulation type ventilation cabinet

Abstract

The invention relates to the technical field of aluminum product production, in particular to an air regulation type ventilation cabinet. The ventilation cabinet comprises a ventilation cabinet body, the inner bottom wall of the ventilation cabinet body is slidably provided with a lifting storage rack used for placing experiment materials, and the area of a ventilation opening is changed when the lifting storage rack ascends and descends; a temperature sensor used for sensing ventilation temperature is arranged on one side of the top face of the lifting storage rack, and an adjusting mechanism used for driving the lifting storage rack to ascend and descend is arranged on the edge of one side of the lifting storage rack. And an air cooler is arranged on the surface of the adjusting mechanism. According to the invention, the temperature sensor senses the temperature of the gas generated by the experiment, when the high-temperature gas is generated, the controller controls the hot-air blower to operate and exhaust the rising gas flow, and when the low-temperature gas is generated, the cold-air blower operates and exhaust the falling gas flow, so that the hot-air blower or the cold-air blower is selected to be started according to the temperature of the experiment gas; and the ventilation is more efficient and more energy-saving.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum product production, in particular to an air-regulating fume hood. Background Art

[0002] Cabinet exhaust hoods are commonly known as fume hoods, which are similar to closed hoods. Small parts spray paint cabinets and chemical laboratory fume hoods are typical structures of cabinet exhaust hoods. Large room fume hoods have one side completely open, and operators work inside the cabinet. They are mainly used for large-scale painting, powder bagging, etc. The working opening of the fume hood has a great influence on the airflow distribution in the cabinet, and the airflow distribution directly affects the working effect of the cabinet exhaust hood.

[0003] Traditional fume hoods are generally ventilated by a single fixed fan, which is not convenient for exhaust according to the flow direction of the experimental gas. When adjusting the air volume, an air volume regulating valve is mostly used to adjust the air volume. Under operating conditions where a large air volume is required, a high-power fan is required, which increases the cost. Summary of the invention

[0004] The object of the present invention is to provide an air conditioning fume hood to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention aims to provide an air-regulating fume hood, including a fume hood body, a lifting rack for placing experimental materials being slidably arranged on the bottom wall of the fume hood body, and the ventilation opening area is changed when the lifting rack is lifted or lowered; a temperature sensor for sensing the ventilation temperature is arranged on one side of the top surface of the lifting rack, and an adjusting mechanism for driving the lifting rack to rise and fall is arranged on one side edge of the lifting rack; a cold air blower is arranged on the surface of the adjusting mechanism, and a hot air blower is axially symmetrically arranged on the end of the surface of the adjusting mechanism away from the cold air blower, and the adjusting mechanism synchronously drives the cold air blower and the hot air blower to move when driving the lifting rack to rise and fall.

[0006] As a further improvement of the technical solution, the lifting rack includes a base frame, a surface frame and a cylinder, a slide groove is provided on one side of the bottom wall of the fume hood body, sliding protrusion blocks are provided on both sides of the bottom surface of the base frame, the sliding protrusion blocks are slidably arranged inside the slide groove, a cavity is provided inside the base frame, the surface frame is movably sleeved inside the cavity, and a cylinder for pushing the lifting rack to move horizontally is provided on one side of the outer surface of the base frame;

[0007] An upper exhaust passage is arranged on one side of the inner wall of the fume hood close to the lifting rack, and a lower exhaust passage is arranged below the upper exhaust passage.

[0008] As a further improvement of the present technical solution, the adjustment mechanism includes a dual-axis motor, a drive assembly and a connecting pipe. The dual-axis motor is fixedly installed on one side edge of the base frame. The drive assembly is in two groups and is fixedly arranged on the output shafts at both ends of the dual-axis motor. The connecting pipe is threadedly connected to the surface of the drive assembly.

[0009] As a further improvement of the present technical solution, the drive assembly includes a dense-thread screw and a wide-thread screw, one end of the dense-thread screw is fixed to the output shaft of the dual-axis motor, and one end of the wide-thread screw is fixed to an end of the dense-thread screw away from the dual-axis motor.

[0010] As a further improvement of the technical solution, one side of the temperature sensor is electrically connected to a controller, and the controller is installed on the top edge of the lifting rack and is electrically connected to the hot air blower and the cold air blower respectively.

[0011] As a further improvement of the present technical solution, the top surface of the hot air blower is connected to a telescopic universal tube, the top of the telescopic universal tube is connected to an upper exhaust port, and the upper exhaust port is fixedly installed on the top surface of the fume hood body; the bottom of the cold air blower is connected to a bent universal tube, one end of the bent universal tube is connected to a lower exhaust port, and the lower exhaust port is fixedly installed on a side of the fume hood body away from the upper exhaust port.

[0012] As a further improvement of the technical solution, the surfaces of the cold air blower and the hot air blower are both slidably provided with limit transverse plates, the surfaces of the limit transverse plates are slidably provided with fixed plates, and the fixed plates are fixedly mounted on the inner wall of the fume hood.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this air-adjusting fume hood, the temperature sensor senses the temperature of the gas generated in the experiment. When high-temperature gas is generated, the controller controls the operation of the hot air blower to discharge the rising airflow. When low-temperature gas is generated, the cold air blower is operated to discharge the descending airflow. The hot air blower or the cold air blower can be selected according to the temperature of the experimental gas, making ventilation more efficient and energy-saving.

[0015] When the cylinder drives the lifting rack to move, the cold air fan and the hot air fan follow it. After moving to the position where personnel conduct experiments, the dual-axis motor drives the drive assembly to rotate, thereby driving the lifting rack to rise and fall, adjusting the size of the ventilation aperture. At the same time, the hot air fan and the cold air fan follow the lifting and falling, achieving the effect of adjusting the air volume of the fume hood. When the ventilation aperture of the lifting rack is adjusted to the maximum, the hot air fan and the cold air fan are also closest to the experimental position, which greatly improves the airflow efficiency and ventilation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the hot air blower and the cold air blower of the present invention;

[0019] Figure 4 It is a schematic diagram of the upper exhaust port structure of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the lower exhaust port of the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the temperature sensor of the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of the lifting rack of the present invention;

[0023] Figure 8 It is a schematic diagram of the structure of the fume hood of the present invention.

[0024] The meaning of each number in the figure is:

[0025] 1. Fume cabinet;

[0026] 2. Lifting rack; 21. Base frame; 22. Surface frame; 23. Cylinder;

[0027] 3. Temperature sensor;

[0028] 4. Adjustment mechanism; 41. Dual-axis motor; 42. Driving assembly; 421. Close-thread screw; 422. Wide-thread screw; 43. Connecting pipe;

[0029] 5. Cold air blower; 6. Hot air blower; 7. Controller; 8. Telescopic universal tube; 9. Upper exhaust port; 10. Bending universal tube; 11. Lower exhaust port; 12. Fixed plate. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] Example

[0033] See also Figure 1-Figure 8 As shown, the purpose of this embodiment is to provide an air-adjusting fume hood, including a fume hood body 1, a lifting rack 2 for placing experimental materials is slidably provided on the bottom wall of the fume hood body 1, and the lifting rack 2 changes the ventilation opening area when it is raised or lowered;

[0034] A temperature sensor 3 for sensing ventilation temperature is provided on one side of the top surface of the lifting rack 2, and an adjustment mechanism 4 for driving the lifting rack 2 to move up and down is provided on one side edge of the lifting rack 2;

[0035] A cold air blower 5 is arranged on the surface of the adjusting mechanism 4, and a hot air blower 6 is arranged axially symmetrically on one end of the surface of the adjusting mechanism 4 away from the cold air blower 5. When the adjusting mechanism 4 drives the lifting rack 2 to rise and fall, it simultaneously drives the cold air blower 5 and the hot air blower 6 to move.

[0036] The temperature sensor 3 senses the temperature of the gas generated in the experiment. When high-temperature gas is generated, the controller 7 controls the operation of the hot air blower 6 to discharge the rising airflow. When low-temperature gas is generated, the cold air blower 5 is operated to discharge the descending airflow, thereby achieving the goal of selecting to turn on the hot air blower 6 or the cold air blower 5 according to the temperature of the experimental gas, and ventilation is more efficient and energy-saving; when the cylinder 23 drives the lifting rack 2 to move, the hot air blower 6 and the cold air blower 5 follow the movement. After moving to the position where personnel conduct experiments, the dual-axis motor 41 drives the driving component 42 to rotate, thereby driving the lifting rack 2 to rise and fall, adjusting the size of the ventilation aperture, and at the same time, the hot air blower 6 and the cold air blower 5 follow the lifting and falling, achieving the effect of adjusting the air volume of the fume hood. When the ventilation aperture of the lifting rack 2 is adjusted to the maximum, the hot air blower 6 and the cold air blower 5 are also closest to the experimental position, which greatly improves the airflow efficiency and ventilation effect.

[0037] See also Figure 7 Combined with Figure 8As shown, in order to facilitate the movement of the lifting rack 2 to the position where the personnel conduct the experiment, so as to ensure that the gas generated by the experiment can be better ventilated and discharged, the specific structure of the lifting rack 2 is disclosed. The lifting rack 2 includes a base frame 21, a surface frame 22 and a cylinder 23. A slide groove is provided on one side of the bottom wall of the fume hood 1, and sliding protrusions are provided on both sides of the bottom surface of the base frame 21. The sliding protrusions are slidably arranged inside the slide groove. A cavity is provided inside the base frame 21, and the surface frame 22 is movably sleeved inside the cavity. A cylinder 23 for pushing the lifting rack 2 to move horizontally is provided on one side of the outer surface of the base frame 21;

[0038] An upper exhaust duct is provided on one side of the inner wall of the fume hood 1 close to the lifting rack 2, and the upper exhaust duct facilitates the rise of hot gas generated by the experiment, and a lower exhaust duct is provided below the upper exhaust duct, and the lower exhaust duct facilitates the fall of cold gas;

[0039] Open the cylinder 23 to drive the sliding protrusion at the bottom of the lifting rack 2 to slide in the slide groove of the bottom wall of the fume hood 1, and move the lifting rack 2 to the position where personnel conduct experiments. When the lifting rack 2 moves, because the adjustment mechanism 4 is installed on the lifting rack 2, the adjustment mechanism 4, the hot air blower 6 and the cold air blower 5 will be driven to move at the same time. On the one hand, the lifting rack 2 can be convenient for personnel to place experimental tools. On the other hand, the hot air blower 6 and the cold air blower 5 will always work near the experimental position, and the ventilation effect is better, which effectively avoids personnel from operating at a position far away from the fan. In addition, when the surface frame 22 is lifted and lowered inside the bottom frame 21, its ventilation aperture will expand or shrink, which is convenient for adjusting the air volume.

[0040] See also Figure 2 Combined with Figure 3 As shown, in order to facilitate the adjustment of the positions of the hot air blower 6 and the cold air blower 5 to achieve the effect of adjusting the air volume, the specific structure of the adjustment mechanism 4 is disclosed. The adjustment mechanism 4 includes a dual-axis motor 41, a drive assembly 42 and a connecting pipe 43. The dual-axis motor 41 is fixedly installed on one side edge of the base frame 21. The number of the drive assembly 42 is two groups and is fixedly arranged with the output shafts at both ends of the dual-axis motor 41. The connecting pipe 43 is threadedly connected to the surface of the drive assembly 42.

[0041] After the dual-axis motor 41 is powered on, it will drive the driving assembly 42 to rotate, and the surface frame 22 connected to the lower position of the driving assembly 42 will follow the lifting and lowering to change the ventilation diameter. At the same time, the driving assembly 42 will drive the connecting pipe 43 to lift and lower, thereby driving the hot air blower 6 and the cold air blower 5 to lift and lower inside the upper exhaust channel and the lower exhaust channel to achieve the effect of adjusting the air volume of the fume hood. When the ventilation diameter of the lifting shelf 2 is adjusted to the maximum, the hot air blower 6 and the cold air blower 5 are also closest to the experimental position, which greatly improves the airflow efficiency and ventilation effect.

[0042] See also Figure 2 Combined with Figure 3 As shown, in order to drive the hot air blower 6 and the cold air blower 5 to rise and fall and adjust the distance from the experimental position, the specific structure of the driving component 42 is further disclosed. The driving component 42 includes a dense threaded screw 421 and a wide threaded screw 422. One end of the dense threaded screw 421 is fixed to the output shaft of the dual-axis motor 41, and one end of the wide threaded screw 422 is fixed to the end of the dense threaded screw 421 away from the dual-axis motor 41.

[0043] The dual-axis motor 41 drives the dense-thread screw 421 and the wide-thread screw 422 to rotate. When the dense-thread screw 421 rotates, it will drive the surface frame 22 to rise and fall slightly inside the bottom frame 21, and the hot air blower 6 and the cold air blower 5 connected to the wide-thread screw 422 will rise and fall synchronously over a large distance. The closer the distance, the greater the air volume, and vice versa.

[0044] See also Figure 6 As shown, in order to select to turn on the hot air blower 6 or the cold air blower 5 according to the temperature of the experimental gas to make ventilation more efficient and energy-saving, the temperature sensor 3 is further disclosed, and a controller 7 is electrically connected to one side of the temperature sensor 3. The controller 7 is installed on the top edge of the lifting rack 2 and is electrically connected to the hot air blower 6 and the cold air blower 5 respectively.

[0045] Among them, the working principle of the controller 7 is as well known to those skilled in the art. It refers to a main command device that controls the start, speed regulation, braking and reversal of the motor by changing the wiring of the main circuit or the control circuit and changing the resistance value in the circuit in a predetermined order. When the experimental gas is generated, the temperature sensor 3 senses the temperature of the gas generated by the experiment. When high-temperature gas is generated, the hot air blower 6 is controlled by the controller 7 to operate, and the hot gas itself will flow upward. At this time, the hot air blower 6 can discharge the rising hot air flow more efficiently and quickly. When low-temperature gas is generated, the cold air blower 5 will discharge the descending air flow when it is running. The hot air blower 6 or the cold air blower 5 can be automatically turned on according to the gas temperature generated by the experiment, making ventilation more efficient and energy-saving.

[0046] See also Figure 5 Combined with Figure 6 As shown, in order to ensure that the hot air blower 6 and the cold air blower 5 do not affect the exhaust when they are lifted or lowered, the hot air blower 6 and the cold air blower 5 are further disclosed on the basis of the above structure. The top surface of the hot air blower 6 is connected with a telescopic universal tube 8, and the top of the telescopic universal tube 8 is connected with an upper exhaust port 9, which is fixedly installed on the top surface of the fume hood 1. The bottom of the cold air blower 5 is connected with a bent universal tube 10, and one end of the bent universal tube 10 is connected with a lower exhaust port 11, which is fixedly installed on the side of the fume hood 1 away from the upper exhaust port 9.

[0047] When the hot air blower 6 is displaced, the telescopic universal tube 8 is deformed accordingly, and the hot air flow absorbed by the hot air blower 6 is discharged through the upper exhaust port 9. When the cold air blower 5 is displaced, the bending universal tube 10 is deformed, and the cold air flow is discharged through the lower exhaust port 11.

[0048] A limit transverse plate is slidably provided on the surface of the cold air blower 5 and the hot air blower 6 , and a fixing plate 12 is slidably provided on the surface of the limit transverse plate. The fixing plate 12 is fixedly installed on the inner wall of the fume hood body 1 .

[0049] The improvement lies in that: when the cold air blower 5 and the hot air blower 6 are moving, the limiting horizontal plate limits the cold air blower 5 and the hot air blower 6, making it easier for the cylinder 23 to drive the cold air blower 5 and the hot air blower 6 to move horizontally, and the fixed plate 12 limits the limiting horizontal plate, so that the driving component 42 will not cause offset rotation when driving the cold air blower 5 and the hot air blower 6 to rise and fall.

[0050] In summary, the working principle of this scheme is as follows: open the cylinder 23, drive the sliding protrusion block at the bottom of the lifting rack 2 to slide in the slide groove of the bottom wall of the fume hood 1, and move the lifting rack 2 to the position where the personnel conduct experiments. When the lifting rack 2 moves, because the adjustment mechanism 4 is installed on the lifting rack 2, it will drive the adjustment mechanism 4, the hot air blower 6 and the cold air blower 5 to move at the same time. On the one hand, the lifting rack 2 can facilitate the personnel to place experimental tools. On the other hand, the hot air blower 6 and the cold air blower 5 will always work near the experimental position, and the ventilation effect is better, which effectively avoids the personnel from operating at a position far away from the fan. In addition, when the surface frame 22 is lifted and lowered inside the bottom frame 21, its ventilation aperture will expand or shrink, which is convenient for adjusting the air volume;

[0051] When the experimental gas is generated, the temperature sensor 3 senses the temperature of the gas generated by the experiment. When high-temperature gas is generated, the hot air blower 6 is controlled by the controller 7 to operate, and the hot gas itself will flow upward. At this time, the hot air blower 6 can discharge the rising hot air flow more efficiently and quickly. When low-temperature gas is generated, the cold air blower 5 will operate to discharge the descending air flow. The hot air blower 6 or the cold air blower 5 can be automatically turned on according to the temperature of the gas generated by the experiment, making ventilation more efficient and energy-saving.

[0052] After the double-axis motor 41 is powered on, it drives the dense-thread screw 421 and the wide-thread screw 422 to rotate. When the dense-thread screw 421 rotates, it drives the surface frame 22 to rise and fall slightly inside the bottom frame 21, and the hot air blower 6 and the cold air blower 5 connected to the wide-thread screw 422 will synchronously rise and fall a large distance in the upper exhaust channel and the lower exhaust channel to achieve the effect of adjusting the air volume of the fume hood. When the ventilation diameter of the lifting rack 2 is adjusted to the maximum, the hot air blower 6 and the cold air blower 5 are also closest to the experimental position, which greatly improves the airflow efficiency and ventilation effect.

[0053] When the hot air blower 6 is displaced, the telescopic universal tube 8 is deformed accordingly, and the hot air flow absorbed by the hot air blower 6 is discharged through the upper exhaust port 9. When the cold air blower 5 is displaced, the bending universal tube 10 is deformed, and the cold air flow is discharged through the lower exhaust port 11.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A ventilation hood, comprising a ventilation hood body (1), characterized in that: The bottom wall of the fume hood (1) is slidably provided with a lifting rack (2) for placing experimental materials, and the lifting rack (2) changes the area of ​​the ventilation opening when it is raised or lowered; A temperature sensor (3) for sensing ventilation temperature is provided on one side of the top surface of the lifting rack (2), and an adjustment mechanism (4) for driving the lifting rack (2) to move up and down is provided on one side edge of the lifting rack (2); A cold air blower (5) is arranged on the surface of the adjusting mechanism (4), and a hot air blower (6) is axially symmetrically arranged on one end of the surface of the adjusting mechanism (4) away from the cold air blower (5). When the adjusting mechanism (4) drives the lifting rack (2) to move upward or downward, it drives the cold air blower (5) and the hot air blower (6) to move synchronously.

2. The air conditioning fume hood according to claim 1, characterized in that: The lifting rack (2) comprises a bottom frame (21), a surface frame (22) and a cylinder (23); a slide groove is arranged on one side of the inner bottom wall of the fume hood (1); sliding protrusion blocks are arranged on both sides of the bottom surface of the bottom frame (21); the sliding protrusion blocks are slidably arranged inside the slide groove; a cavity is arranged inside the bottom frame (21); the surface frame (22) is movably sleeved inside the cavity; and a cylinder (23) for pushing the lifting rack (2) to move horizontally is arranged on one side of the outer surface of the bottom frame (21); An upper exhaust passage is arranged on one side of the inner wall of the fume hood body (1) close to the lifting rack (2), and a lower exhaust passage is arranged below the upper exhaust passage.

3. The air conditioning fume hood according to claim 2, characterized in that: The adjusting mechanism (4) comprises a dual-axis motor (41), a driving assembly (42) and a connecting pipe (43); the dual-axis motor (41) is fixedly mounted on a side edge of the base frame (21); the driving assembly (42) is provided in two groups and is fixedly arranged on the output shafts at both ends of the dual-axis motor (41); and the connecting pipe (43) is threadedly connected to the surface of the driving assembly (42).

4. The air conditioning fume hood according to claim 3, characterized in that: The driving assembly (42) comprises a dense-thread screw (421) and a wide-thread screw (422), one end of the dense-thread screw (421) being fixedly arranged with the output shaft of the dual-axis motor (41), and one end of the wide-thread screw (422) being fixedly arranged with an end of the dense-thread screw (421) away from the dual-axis motor (41).

5. The air conditioning fume hood according to claim 3, characterized in that: One side of the temperature sensor (3) is electrically connected to a controller (7), and the controller (7) is installed on the top edge of the lifting rack (2) and is electrically connected to the hot air blower (6) and the cold air blower (5) respectively.

6. The air conditioning fume hood according to claim 1, characterized in that: The top surface of the hot air blower (6) is connected to a telescopic universal tube (8), the top of the telescopic universal tube (8) is connected to an upper exhaust port (9), and the upper exhaust port (9) is fixedly installed on the top surface of the fume hood (1); the bottom of the cold air blower (5) is connected to a curved universal tube (10), one end of the curved universal tube (10) is connected to a lower exhaust port (11), and the lower exhaust port (11) is fixedly installed on a side of the fume hood (1) away from the upper exhaust port (9).

7. The air conditioning fume hood according to claim 6, characterized in that: The surfaces of the cold air blower (5) and the hot air blower (6) are both slidably provided with limit transverse plates, the surfaces of the limit transverse plates are slidably provided with fixed plates (12), and the fixed plates (12) are fixedly mounted on the inner wall of the fume hood body (1).

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