Novel ventilation cabinet

Abstract

The utility model discloses a novel ventilation cabinet which comprises a cabinet body, an air inlet communicated with the outside is formed in one side of the cabinet body, and an air outlet is formed in the top of the cabinet body; the partition plate is arranged in the cabinet body; the partition plate and the cabinet body form an exhaust channel, and the top of the exhaust channel is communicated with the air outlet; an opening communicated with the exhaust channel is formed between the bottom of the partition plate and the cabinet body, and the exhaust channel is communicated with the cabinet body through the opening. The partition plate can be controlled to move in the cabinet body to change the size of the exhaust channel and the size of the opening. Through the movable partition plate, the size of the exhaust channel can be changed according to the air volume to be matched with the conditions of different air speeds, and the exhaust efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, and in particular to a novel fume hood. Background Art

[0002] Fume hoods are a common equipment in laboratories, especially chemical laboratories. Their function is to reduce the contact of experimenters with harmful gases and they are a primary barrier to protect personnel from the hazards of toxic chemical fumes.

[0003] At present, the volume of the exhaust passage of the existing fume hood is fixed, and the volume of the exhaust passage cannot be changed according to the size of the air volume, thereby affecting the ventilation efficiency of the fume hood. Utility Model Content

[0004] The utility model aims to provide a novel fume hood, which is designed to be able to change the volume of the exhaust passage according to the size of the air volume.

[0005] The utility model is realized by the following technical solutions:

[0006] A new type of fume hood, comprising:

[0007] The cabinet has an air inlet connected to the outside on one side and an air outlet on the top;

[0008] A partition is arranged in the cabinet; the partition and the cabinet form an exhaust passage, the top of the exhaust passage is connected to the air outlet; an opening connected to the exhaust passage is formed between the bottom of the partition and the cabinet, and the exhaust passage is connected to the cabinet through the opening;

[0009] The partition can be controlled to move within the cabinet to change the size of the exhaust passage and the size of the opening.

[0010] In a further technical solution, a rotating plate and a sealing plate are also included;

[0011] One end of the rotating plate is hinged to the cabinet, and the other end is hinged to the partition; the rotating plate has a through cavity for gas to pass through;

[0012] One end of the sealing plate is connected to the cabinet, and the other end is connected to the rotating plate or the partition; the sealing plate has deformation capability.

[0013] In a further technical solution, two ends of the telescopic rod are hinged to the cabinet and the rotating plate respectively.

[0014] In a further technical solution, a plurality of connecting beams are provided in the through cavity; one end of the telescopic rod is hinged to the connecting beam.

[0015] In a further technical solution, the inner side wall of the cabinet is provided with a plurality of slide grooves parallel to each other, and the two ends of the partition plate have a plurality of protrusions which are respectively embedded in the plurality of slide grooves.

[0016] In a further technical solution, an air supply port is also provided on the top of the cabinet.

[0017] In a further technical solution, the top of the cabinet is provided with an air collecting hood, and the diameter of the air collecting hood gradually decreases from the bottom to the top; the air outlet is arranged at the top of the air collecting hood.

[0018] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0019] The utility model has a new fume hood in which the partition moves in the cabinet according to the size of the air volume, thereby changing the size of the exhaust passage and the size of the opening, and is suitable for different wind speeds; the airflow enters the cabinet through the air inlet, then enters the exhaust passage through the opening, and finally exits the cabinet through the air outlet. The utility model can change the volume of the exhaust passage according to the size of the air volume through the movable partition, match different wind speeds, and increase the exhaust efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a partial structural schematic diagram of the partition;

[0022] Figure 3 It is a structural schematic diagram of the rotating plate.

[0023] Icons: 1-cabinet, 1a-air inlet, 1b-air supply port, 1c-chute, 1d-exhaust channel, 1e-opening, 11-air collecting hood, 11a-air outlet, 2-partition, 21-protrusion, 3-rotating plate, 3a-through cavity, 31-connecting beam, 4-sealing plate, 5-telescopic rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0026] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. They are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0029] Please refer to Figure 1-Figure 3 A new type of fume hood includes a cabinet body 1, a partition 2, a rotating plate 3, a sealing plate 4 and a plurality of telescopic rods 5.

[0030] like Figure 1 As shown, the cabinet 1 has a cavity inside, and an air inlet 1a is provided on one side of the cabinet 1, and outdoor air enters the cavity of the cabinet 1 through the air inlet; an air outlet 11a is also provided on the top of the cabinet 1, and the air entering the cabinet 1 is discharged from the air outlet 11a.

[0031] like Figure 1As shown, one end of the rotating plate 3 is hinged to the inner wall of the cabinet 1 away from the air inlet 1a, and the other end is hinged to the partition 2; the partition 2 and the inner wall of the cavity form an exhaust channel 1d, and an opening 1e is formed between the bottom of the partition 2 and the inner bottom of the cabinet 1. The airflow enters the exhaust channel 1d through the opening 1e and is finally discharged from the air outlet 11a; the rotating plate 3 rotates, driving the partition 2 to move, thereby changing the size of the opening 1e and the size of the exhaust channel 1d.

[0032] like Figure 1 and Figure 2 As shown, the inner wall of the cabinet body 1 is provided with a plurality of mutually parallel slide grooves 1c, and the two ends of the partition 2 have a plurality of protrusions 21, which are respectively embedded in the plurality of slide grooves 1c; the shape of the slide groove 1c matches the trajectory of the movement of the partition 2, thereby guiding the movement of the partition 2.

[0033] In this embodiment, the inner walls of two parallel cabinets 1 are respectively provided with two slide grooves 1c along the height direction, and each side of the partition 2 is respectively provided with two protrusions 21 that are inserted into the slide grooves 1c; it is natural that the number of the slide grooves 1c and the protrusions 21 is not limited to two, and can be flexibly set according to usage requirements.

[0034] like Figure 1 As shown, one end of the sealing plate 4 is connected to the cabinet 1, and the other end is connected to the rotating plate 3; the sealing plate 4 has deformation ability, and the sealing plate 4 cuts off the connection between the cavity in the cabinet 1 and the air outlet 11a, so that the airflow can only be discharged from the air outlet 11a through the exhaust channel 1d; specifically, the sealing plate 4 is made of plastic material and has a plurality of corrugations, so that the sealing plate 4 can be deformed under the action of external force to follow the rotation of the rotating plate 3.

[0035] In another embodiment, the other end of the sealing plate 4 is connected to the partition plate 2 .

[0036] like Figure 1 and Figure 3 As shown, a plurality of connecting beams 31 are provided in the through cavity 3a, one end of a plurality of telescopic rods 5 is hinged to the connecting beam 31, and the other end is hinged to the inner wall of the cabinet 1. By extending and shortening the telescopic rods 5, the rotating plate 3 is driven to rotate upward or downward, thereby changing the size of the exhaust passage 1d and the size of the opening 1e.

[0037] In this embodiment, two connecting beams 31 are preferably provided in the through cavity 3a, and the number of telescopic rods 5 is also preferably two. Such a configuration can increase the stability of the rotating plate 3 to better drive the rotating plate 3 to rotate; it is natural that the number of connecting beams 31 and telescopic rods 5 is not limited to two, and can be flexibly set according to usage requirements.

[0038] In this embodiment, the telescopic rod 5 is an electric rod, a hydraulic rod or others, which is not limited in this embodiment.

[0039] like Figure 1 As shown, the top of the cabinet 1 has an air collecting hood 11, the diameter of the air collecting hood 11 gradually decreases from the bottom to the top, and the air outlet 11a is arranged at the top of the air collecting hood 11; by setting the air collecting hood 11, a guiding effect is played on the airflow, so that the airflow can be better discharged from the air outlet 11a.

[0040] like Figure 1 As shown, an air supply port 1 b is also provided on the top of the cabinet 1 , and the flow speed of the air flow in the cabinet 1 is enhanced through the air supply port 1 b.

[0041] The working principle of this embodiment is:

[0042] The partition 2 moves in the cabinet 1 according to the amount of wind, thereby changing the size of the exhaust passage 1d and the size of the opening 1e, which is suitable for different wind speeds; the airflow enters the cabinet 1 through the air inlet 1a, then enters the exhaust passage 1d through the opening 1e, and finally exits the cabinet 1 through the air outlet 11a.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of fume hood, characterized in that: include: The cabinet has an air inlet connected to the outside on one side and an air outlet on the top; A partition is arranged in the cabinet; the partition and the cabinet form an exhaust passage, the top of the exhaust passage is connected to the air outlet; an opening connected to the exhaust passage is formed between the bottom of the partition and the cabinet, and the exhaust passage is connected to the cabinet through the opening; The partition can be controlled to move within the cabinet to change the size of the exhaust passage and the size of the opening.

2. A novel fume hood according to claim 1, characterized in that: Also includes a rotating plate and a sealing plate; One end of the rotating plate is hinged to the cabinet, and the other end is hinged to the partition; the rotating plate has a through cavity for gas to pass through; One end of the sealing plate is connected to the cabinet, and the other end is connected to the rotating plate or the partition; the sealing plate has deformation capability.

3. A novel fume hood according to claim 2, characterized in that: It also includes a plurality of telescopic rods, both ends of which are hinged to the cabinet body and the rotating plate respectively.

4. A novel fume hood according to claim 3, characterized in that: A plurality of connecting beams are arranged in the through cavity; one end of the telescopic rod is hinged to the connecting beam.

5. A novel fume hood according to claim 1, characterized in that: The inner side wall of the cabinet is provided with a plurality of slide grooves which are parallel to each other, and the two ends of the partition plate are provided with a plurality of protrusions which are respectively embedded in the plurality of slide grooves.

6. A novel fume hood according to claim 1, characterized in that: An air supply port is also provided on the top of the cabinet.

7. A novel fume hood according to claim 1, characterized in that: The top of the cabinet is provided with an air collecting hood, and the aperture of the air collecting hood gradually decreases from the bottom to the top; the air outlet is arranged at the top of the air collecting hood.

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