TWM603800U - Air exhaust cabinet - Google Patents

Abstract

An exhaust cabinet is used to solve the problem that harmful substances are not completely discharged when the conventional exhaust cabinet is operated. The system includes: a cabinet with a first side and a second side, the cabinet has an operating window on the first side, the operating window communicates with an operating space in the cabinet, and the cabinet has a A first air flow channel and a second air flow channel, the first air channel and the second air channel communicate with the operating space; a movable air valve slidably combined on the first side; an air inlet unit with at least one air The duct is located in the cabinet; an air guide unit is located on the bottom side of the cabinet and communicates with the at least one air duct, and the air guide unit obliquely blows the airflow toward the second side; and an air outlet unit having an outlet The air duct body communicates with the first air flow channel and the second air flow channel.

Description

Exhaust cabinet

This creation is about a kind of exhaust cabinet, especially a kind of exhaust cabinet that can reduce harmful substances staying in the operating space.

In general industries, when volatile solvents such as chemicals and reagents are configured, as well as microorganisms and other bacteria experiments, they usually need to be carried out in specific equipment such as exhaust cabinets according to regulations; in this way, the exhaust cabinet can be used to avoid poisoning Gas or harmful bacteria escape in the air, causing environmental pollution, and even accidentally inhaled by the operator, causing harm to the human body.

Please refer to Figure 1, which is a conventional exhaust cabinet 9, the conventional exhaust cabinet 9 has a cabinet 91, the cabinet 91 has an operating platform 911, the operating platform 911 for For chemical preparation operations and microbiological experiments, the inner wall of the cabinet 91 and the operating platform 911 enclose an operating space 912 and an accommodating space 913. One side of the cabinet 91 has an operating window 914; a door panel 92 It is slidably combined with the cabinet 91 to adjust the opening height of the operating window 912. The door panel 92 has an air inlet side 921 and an air outlet side 922. The air inlet side 921 and the air outlet side 922 are formed between An air duct 923, the air inlet side 921 is combined with an air outlet unit 93, and the air outlet side 922 is used for blowing out the air flow generated by the air outlet unit 93; an air exhaust unit 94 is located in the accommodation space 913. An embodiment similar to the conventional exhaust cabinet 9 has been disclosed in the Republic of China Patent Publication No. M279718.

When operating the conventional exhaust cabinet 9, the operator can move the door panel 92 up and down to properly adjust the size of the operating window 912, and at the same time, turn on the air outlet unit 93 and the air exhaust unit 94 to facilitate the air outlet The air flow generated by the unit 93 can be blown out from the air outlet side 922 through the air duct 923 of the door panel 92 to prevent harmful substances in the operating space 912 from leaking to the outside of the cabinet 91 through the operating window 912, and by The air exhaust unit 94 extracts harmful substances scattered in the operating space 912.

However, in the above-mentioned conventional exhaust cabinet 9, under the condition that the exhaust air volume remains unchanged, when the opening area of the operating window 912 increases with the door panel 92, it is easy to cause the wind speed in the operating space 912 to decrease, which causes The conventional exhaust cabinet 9 is likely to leak harmful gases; and the harmful substances in the operating space 912 are blown and discharged by only one air duct 923, and it is difficult to establish a stable air flow pattern in the operating space 912, so that it is too large. Most of the harmful substances still stay in the operation space 912 and are not completely discharged, thereby endangering the health and safety of the experimenter.

In view of this, it is indeed necessary to improve the conventional exhaust cabinet.

In order to solve the above problems, the purpose of this creation is to provide an exhaust cabinet which can reduce the occurrence of hazardous substances staying in the operating space.

The second purpose of this creation is to provide an exhaust cabinet that can reduce manufacturing costs.

Another purpose of this creation is to provide an exhaust cabinet that can improve the convenience of use.

Another purpose of this creation is to provide an exhaust cabinet that can improve the smoothness of air flow and a better exhaust effect.

The directionality or similar terms used in the full text of this creation, such as "front", "rear", "left", "right", "up (top)", "down (bottom)", "inner", "outer" , "Side", etc., mainly refer to the direction of the attached drawings. The directional or similar terms are only used to help explain and understand the embodiments of the creation, and are not used to limit the creation.

The use of the quantifiers "one" or "one" for the elements and components described in the full text of this creation is only for the convenience of use and to provide the usual meaning of the scope of this creation; in this creation, it should be interpreted as including one or at least one, and single The concept of also includes the plural, unless it clearly implies other meanings.

The approximate terms such as "combination", "combination" or "assembly" mentioned in the full text of this creation mainly include the types that can be separated without destroying the components after being connected, or the components can not be separated after being connected, and have common knowledge in the field Those can be selected based on the materials of the components to be connected or assembly requirements.

The exhaust cabinet of the present invention includes: a cabinet with a first side and a second side opposite to each other, the cabinet has an operating window on the first side, the operating window and an operating space in the cabinet Connected, the cabinet has a first air channel and a second air channel, the first air channel and the second air channel are connected to the operating space; a movable air door slidably combined with the first cabinet Side to adjust the operating window to a predetermined opening height; an air inlet unit located between the first side and the second side, the air inlet unit having at least one air duct located in the cabinet; an air guide unit, Located on the bottom side of the cabinet and connected to the at least one air duct, the air guiding unit obliquely blows the air flow toward the second side to form an oblique blowing angle; and an air outlet unit having an air outlet pipe body, the The air outlet pipe body communicates with the first air channel and the second air channel.

According to this, the exhaust cabinet of this creation, through the arrangement of the two air ducts of the first air flow channel and the second air flow channel, changes the traditional air flow discharge method and can save the total exhaust air volume; at the same time, the air flow is uniform. It can be discharged from the air outlet pipe to the outdoor space to reduce the occurrence of harmful substances staying in the operating space, thereby stabilizing the circulating air flow inside the cabinet to completely eliminate the harmful existing in the operating space Substances are scattered outside the cabinet from the operating window, which has the effect of saving energy and enhancing the safety of operators.

Wherein, the cabinet body may have a plurality of partitions, and the plurality of partitions and the inner wall of the cabinet may respectively form the first air flow channel and the second air flow channel. In this way, the structure is simple and easy to manufacture, and has the effect of reducing manufacturing costs.

Wherein, the movable valve can be connected with a transmission component, and the other end of the transmission component can be connected with a counterweight. In this way, after the movable valve is moved to a proper position, it can be positioned by the weight of the weight body, which has the effect of improving the convenience of use.

Wherein, the air inlet unit may have an air inlet pipe body which communicates with the outdoor space and the at least one air duct. In this way, the structure is simple and easy to manufacture, and has the effect of reducing manufacturing costs.

Among them, the number of the air ducts can be two. In this way, the airflow entering from the air inlet pipe body can be evenly dispersed, which has the effect of ensuring that the airflow does not overflow.

Wherein, the air inlet unit may have a branching channel, the branching channel can be located between the air inlet pipe body and the at least one air channel, and the branching channel can connect the air inlet pipe body and the two air channels. In this way, the airflow can be symmetrically divided into the two air ducts, which can improve the smoothness of the airflow.

Wherein, the air guide unit may have a communicating piece that communicates with the at least one air duct, and the communicating piece may have a plurality of through holes, and the plurality of through holes are adjacent to the first side of the cabinet. In this way, the airflow in the two air ducts can flow out through the through holes of the communicating member and blow obliquely toward the second side, which has the effect of improving the smoothness of the airflow.

Among them, the oblique blowing angle can be 15 to 75 degrees. In this way, the air flow can be smoothly flowed into the first air flow channel and the two air flow channels, respectively, which can have the effect of improving the smoothness of the air flow.

Wherein, the air outlet unit may have a first fan and a second fan. The first fan is located in the first air flow channel, and the second fan is located in the second air flow channel. In this way, the first fan and the second fan can be used to guide the air flow, which has the effect of improving the smoothness of the air flow and a better exhaust effect.

Wherein, the first fan and the second fan may each be an exhaust fan. In this way, the system can have the effect of improving the air discharge.

Wherein, the air outlet unit may have a third fan located in the air guide unit. In this way, the third fan can blow the air flow out of the through holes of the connecting member, which has the effect of improving the smoothness of the air flow.

In order to make the above and other purposes, features and advantages of this creation more obvious and easy to understand, the following is a detailed description of the preferred embodiments of this creation, together with the accompanying drawings:

Please refer to Figure 2, which is a preferred embodiment of the exhaust cabinet of the present invention, which includes a cabinet 1, a movable valve 2, an air inlet unit 3, an air guide unit 4 and an air outlet unit 5. The movable air valve 2 is slidably combined with the cabinet 1, and the air inlet unit 3, the air guide unit 4, and the air outlet unit 5 are located in the cabinet 1.

Please refer to Figures 2 and 3, the cabinet 1 can be located on a base 10, and the cabinet 1 can be a frame with a general hollow structure. This creation does not limit the basic structure of the cabinet 1. Those skilled in the art can change the shape of the cabinet 1 based on actual needs; in this embodiment, the peripheral wall of the cabinet 1 has a first side 1a and a second side 1b opposite, and a third side opposite 1c and a fourth side 1d, the third side 1c and the fourth side 1d are connected between the first side 1a and the second side 1b. The cabinet has an operating window 11 located on the first side 1a, and the cabinet 1 has an operating space S, which is connected to the operating window 11 so that the operator can operate The window 11 operates in the operating space S.

Please refer to Figures 3 and 4. In addition, the cabinet 1 has a first air passage P1 and a second air passage P2. The first air passage P1 may be located on the second side 1b of the cabinet 1, and the The second air flow channel P2 may be located between the first side 1a and the second side 1b of the cabinet 1. In detail, the cabinet 1 may have several partitions 12, and the several partitions 12 can respectively form the first air passage P1 and the second air passage P2 with the inner wall of the cabinet 1, each The partition 12 has a plurality of perforations 121, and the first air passage P1 and the second air passage P2 can communicate with the operation space S through the plurality of perforations 121.

The movable valve 2 is located on the first side 1a of the cabinet 1, and the movable valve 2 is preferably made of a transparent material such as explosion-proof glass. Wherein, in order to make the movable valve 2 easy to lift, the movable valve 2 can be connected to a transmission assembly M, and the other end of the transmission assembly M is connected to a counterweight W; the operator can move the movable valve 2 (ie : Move the movable valve 2 up and down) to adjust the operating window 11 to a predetermined opening height (that is, adjust the opening area of the operating window 11). After the movable valve 2 is moved to a proper position, you can use The weight body W is positioned by gravity.

The air inlet unit 3 is located between the first side 1a and the second side 1b of the cabinet 1, the air inlet unit 3 may have an air inlet pipe body 31 and at least one air duct 32, and the air inlet pipe body 31 may Connecting the outdoor space with the at least one air duct 32, for example: the air inlet pipe body 31 can be connected to an external laboratory table to achieve the function of exhausting air in the laboratory space, and the at least one air duct 32 is located in the cabinet In this embodiment, the number of the air ducts 32 is two, and the two air ducts 32 can be located on the third side 1c and the fourth side 1d of the cabinet 1 respectively. Preferably, the air inlet unit 3 may also have a flow divider 33 located between the inlet pipe body 31 and the two air ducts 32, and the flow divider 33 may communicate with the inlet pipe body 31 and The two air ducts 32; so that the air flow in the outdoor space can enter from the air inlet pipe body 31 as shown in the arrow K1 in Figure 4, and enter the two air channels 32 through the flow divider 33, so that the air flow can be as shown in the arrow K2 in Figure 4 Blow down as shown.

Please refer to Figures 3 and 4, the air guiding unit 4 is located on the bottom side of the cabinet 1, the air guiding unit 4 may have a connecting piece 41 which may communicate with the two air ducts 32, and the connecting piece 41 may have a plurality of through holes 411, the plurality of through holes 411 are adjacent to the first side 1a of the cabinet 1, the airflow in the two air ducts 32 can flow out through the plurality of through holes 411 of the connecting member 41, and make The airflow can be obliquely blown toward the second side 1b as shown in the arrow K3 in Figure 4, and the oblique blowing direction of the airflow can form an oblique blowing angle θ with a horizontal plane, and the oblique blowing angle θ can be 15 to 75 degrees; Preferably, the oblique blowing angle θ can be selected to be 45 degrees, so that the air flow can flow into the first air flow channel P1 and the second air flow channel P2 smoothly.

Please refer to Figure 4, the air outlet unit 5 is located between the first side 1a and the second side 1b of the cabinet 1, the air outlet unit 5 may have an air outlet pipe body 51, the air outlet pipe body 51 is used to discharge harmful substances generated in the operation space S. The air outlet pipe body 51 can communicate with the first air flow channel P1 and the second air flow channel P2, and can discharge the gas in the operation space S to Outdoor space.

In particular, the air outlet unit 5 may have a first fan 52 and a second fan 53, and the first fan 52 and the second fan 53 may be, for example, power elements such as exhaust fans. In detail, the first fan 52 may be located in the first airflow channel P1, the second fan 53 may be located in the second airflow channel P2, and the first fan 52 and the second fan 53 can be used to guide airflow to flow. It is ensured that the air flow in the first air flow channel P1 and the second air flow channel P2 can flow out from the air outlet pipe body 51 in the direction of arrow K6, which can improve the smoothness of air flow and a better exhaust effect. Preferably, the air outlet unit 5 may also have a third fan 54 which may be located in the communicating member 41 of the air guiding unit 4, and the third fan 54 may transfer the air flow from the communicating member 41 A plurality of through holes 411 are blown out to ensure that the air flow in the communicating member 41 can flow out from the plurality of through holes 411 in the direction of arrow K3, which can improve the smoothness of the air flow.

Please refer to Figures 4 and 5. According to the aforementioned structure, the operator can operate the exhaust cabinet of this creation to activate the air inlet and outlet equipment connected to the air inlet unit 3 and the air outlet unit 5, and perform the activity The valve 2 slides to the predetermined opening height, so that the operating window 11 can have a larger opening area as shown in Figure 4, or a smaller opening area as shown in Figure 5, so that the operator can conveniently operate Work in space S. When the air flow from the outdoor space enters the air inlet pipe body 31 as indicated by the arrow K1, it first enters the two air ducts 32 through the branch passage 33, and is blown down to the connecting piece 41 as indicated by the arrow K2, and then passes through the connecting piece 41. The plurality of through holes 411 of the arrow K3 blow obliquely toward the second side 1b.

At this time, part of the airflow can flow to the right in the direction of arrow K4, and enter the first airflow channel P1 through the perforations 121 of the partition 12, and another part of the airflow can flow upwards in the direction of arrow K5. And enter the second air flow channel P2 through the through holes 121 of the partition plate 12; at the same time, the first air blower 52 and the second air blower 53 can also be arranged to assist the first air flow channel P1 and the second air flow channel P1. The airflow in the second airflow channel P2 enters the air outlet pipe body 51, so that the airflow can be discharged from the air outlet pipe body 51 to the outdoor space in the direction of arrow K6, so as to reduce the occurrence of harmful substances staying in the operation space S; In this way, it can be ensured that the airflow in the operating space S can be maintained in a stable state, and harmful substances can be effectively prevented from floating out of the cabinet 1 from the operating window 11 to avoid endangering the safety of operators. In addition, after the operator has finished operating the exhaust cabinet of this creation, the operator can move the movable valve 2 down as shown in Figure 6 to adjust the opening area of the operating window 11 and close the operating window 11.

To sum up, the exhaust cabinet of this creation, through the arrangement of the two air ducts of the first air flow channel and the second air flow channel, changes the traditional air flow discharge method and can save the total exhaust air volume; The air flow can be discharged from the air outlet pipe to the outdoor space, reducing the occurrence of harmful substances staying in the operating space, thereby stabilizing the circulating air flow inside the cabinet to completely eliminate the existence of the operating space Hazardous substances are scattered outside the cabinet from the operating window, which can achieve energy saving and improve the safety of operators.

Although this creation has been disclosed using the above-mentioned preferred embodiment, it is not intended to limit this creation. Anyone who is familiar with this technique does not depart from the spirit and scope of this creation and makes various changes and modifications relative to the above-mentioned embodiment. The technical scope protected by the creation, therefore, the scope of protection of this creation shall be subject to the scope of the attached patent application.

﹝本 Creation﹞ 1: cabinet 1a: first side 1b: second side 1c: third side 1d: Fourth side 10: Pedestal 11: Operation window 12: Partition 121: Piercing 2: active valve 3: Inlet unit 31: Air inlet pipe body 32: Wind tunnel 33: shunt 4: Air guide unit 41: Connecting parts 411: Through hole 5: Air outlet unit 51: Outlet pipe body 52: The first fan 53: The second fan 54: The third fan K1, K2, K3, K4, K5, K6: Arrow M: Transmission components P1: The first air flow channel P2: Second air flow channel S: Operating space W: counterweight θ: oblique blowing angle ﹝Used ﹞ 9: Exhaust cabinet 91: cabinet 911: operating platform 912: operating space 913: housing space 92: door panel 921: wind side 922: wind side 923: air channel 93: Air outlet unit 94: Ventilation unit

[Figure 1] A sectional view of a conventional exhaust cabinet. [Figure 2] A perspective view of a preferred embodiment of this creation. [Picture 3] Partial enlarged view as shown in Picture 2. [Figure 4] A cross-sectional view of a preferred embodiment of this creation. [Figure 5] The operation situation diagram shown in Figure 4. [Figure 6] The action situation diagram shown in Figure 5.

1: cabinet

1a: first side

1b: second side

10: Pedestal

11: Operation window

12: Partition

121: Piercing

2: active valve

3: Inlet unit

31: Air inlet pipe body

32: Wind tunnel

4: Air guide unit

41: Connecting parts

411: Through hole

5: Air outlet unit

51: Outlet pipe body

52: The first fan

53: The second fan

54: The third fan

K1, K2, K3, K4, K5, K6: Arrow

M: Transmission components

P1: The first air flow channel

P2: Second air flow channel

S: Operating space

W: counterweight

θ: oblique blowing angle

Claims (11)

An exhaust hood, including: A cabinet has a first side and a second side opposite to each other, the cabinet has an operating window on the first side, the operating window communicates with an operating space in the cabinet, and the cabinet has a first side. An airflow channel and a second airflow channel, the first airflow channel and the second airflow channel communicate with the operating space; A movable air valve slidably combined with the first side of the cabinet to adjust the operating window to a predetermined opening height; An air inlet unit located between the first side and the second side, the air inlet unit having at least one air duct located in the cabinet; An air guiding unit located on the bottom side of the cabinet and communicating with the at least one air duct, the air guiding unit obliquely blows the air flow toward the second side and forms an oblique blowing angle; and An air outlet unit has an air outlet pipe body which communicates with the first air flow channel and the second air flow channel. Such as the exhaust cabinet of claim 1, wherein the cabinet body has a plurality of partitions, and the plurality of partitions and the inner wall of the cabinet respectively form the first air flow channel and the second air flow channel. For example, the exhaust cabinet of claim 1, wherein the movable valve is connected to a transmission component, and the other end of the transmission component is connected to a counterweight. For example, the exhaust cabinet of claim 1, wherein the air inlet unit has an air inlet pipe body, and the air inlet pipe body communicates with the outdoor space and the at least one air duct. Such as the exhaust cabinet of claim 4, in which the number of the air duct is two. For example, the exhaust cabinet of claim 5, wherein the air inlet unit has a branch flow channel located between the air inlet pipe body and the at least one air channel, and the branch flow channel communicates the air inlet pipe body and the two air channels. Wind channel. For example, the exhaust cabinet of claim 1, wherein the air guide unit has a communicating piece that communicates with the at least one air duct, the communicating piece has a plurality of through holes, and the plurality of through holes are adjacent to the first part of the cabinet. One side. Such as the exhaust cabinet of claim 1, wherein the oblique blowing angle is 15 to 75 degrees. For example, the exhaust cabinet of any one of claims 1 to 8, wherein the air outlet unit has a first fan and a second fan, the first fan is located in the first air flow channel, and the second fan is located in the second fan. Airflow channel. Such as the exhaust cabinet of claim 9, wherein the first fan and the second fan are respectively an exhaust fan. For example, the exhaust cabinet of claim 9, wherein the air outlet unit has a third fan, and the third fan is located in the air guide unit.

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