CN108151222A - Air supplement type exhaust cabinet - Google Patents

Abstract

The invention relates to an air supplement type exhaust cabinet, which is used for solving the problem of energy waste caused by air extraction when the traditional exhaust cabinet is used and comprises the following components: the cabinet body is provided with an inner shell, the inner shell surrounds an operation chamber and is provided with an air inlet, an operation window is arranged on the surface of the cabinet body opposite to the air inlet, and a first air flow channel is formed between the cabinet body provided with the operation window and the inner shell provided with the air inlet; the door sheet group comprises an outer door sheet and an inner door sheet, the outer door sheet can be used for opening and closing the operation window, and the inner door sheet can be used for opening and closing the air inlet of the inner shell; one end of the air supplementing unit is connected to the outside by an outdoor pipe, and the other end of the air supplementing unit is connected to the first air flow channel by an extension pipe; and one wind guiding unit with one end connected to the wind outlet of the inner casing and the other end connected to outdoor or centralized via one pipe.

Description

Supplementary air exhaust cabinet

technical field

The invention relates to an exhaust cabinet used in a chemical work room, in particular to an exhaust cabinet used to supply outdoor air into the operating space of the exhaust cabinet, so as to prevent the exhaust cabinet from being directly carried out by an airtight air-conditioned room. Air extraction, resulting in insufficient air-conditioning cooling in the air-conditioning room and waste of energy.

Background technique

In the process of laboratory work, it is often necessary to carry out chemical preparation operations and microbial experiments. Since harmful substances are likely to be produced in the above operations, it is necessary to prevent the harmful substances from being exposed to the air and cause environmental pollution, and to prevent operators from accidentally inhaling them. These are important issues that the industry must guard against at present.

Please refer to Fig. 1, it is a kind of traditional exhaust cabinet 9, and this exhaust cabinet 9 is located in the airtight room of an air-conditioning equipment 90, and this exhaust cabinet 9 inside is provided with an operating room A, and this operating room A has a The operating platform 91 can be used for chemical preparation operations and microbiological experiments. One surface of the exhaust cabinet 9 is provided with an operating window 92, and a door sheet 93 is slidably combined with the cabinet body to adjust the operating window 92 to a predetermined opening. degree, the exhaust cabinet 9 is additionally provided with an air deflector 94, so that the operating room A is isolated from an exhaust channel 95, and the exhaust channel 95 is connected to an air outlet 96, and the air outlet 96 can make the exhaust cabinet 9 Harmful gas discharge.

Above-mentioned exhaust cabinet 9 is generally arranged in a large amount in the airtight room of an air conditioner 90, therefore, when this exhaust cabinet 9 operates, under the situation that the harmful gas in this exhaust cabinet 9 continues to discharge, make this exhaust cabinet 9 The air-conditioning air cooled by the air conditioner 90 is continuously supplemented into the interior of the operation room A to maintain the air pressure inside the operation room A.

The above-mentioned traditional exhaust cabinet adopts the supplementary air type exhaust, and through the operation window 92 opened by the door sheet 93, the compensation airflow is obtained from the supplementary wind power system of the building and enters the operation room A of the exhaust cabinet 9. Such a design, The air-conditioning energy consumption of the air-conditioning equipment 90 is caused by supplementary air. Moreover, the supplementary air flow cannot establish a stable air flow pattern in the operating room A of the exhaust cabinet 9, so the problems of air turbulence and eddy current have not been solved, and the risk of overflow that endangers the health and safety of experimenters still exists . In addition, if multiple exhaust cabinets 9 are used in parallel in the airtight room of the air conditioner 90 , it will result in higher energy consumption.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a supplementary air exhaust cabinet, which has a supplementary air unit, and the supplementary air unit has an outdoor pipe connected to the outdoor, so that the exhaust cabinet can operate During this time, the air-tight air-conditioning room will not be pumped, so as to avoid abnormal temperature of the air-conditioning room in the air-conditioning room, and has the effect of saving energy.

The air supply type exhaust cabinet of the present invention comprises: a cabinet body with an inner shell, the inner shell surrounds an operating room and an air inlet, and an operation window is arranged on the surface of the cabinet body opposite to the air inlet , a first air flow channel is formed between the inner shell with the operating window and the cabinet with the air inlet; a door set includes an outer door and an inner door, and the outer door can be used to The operating window is used for opening and closing, and the inner door can be used to open and close the air inlet of the inner shell; a supplementary air unit, one end is connected to the outdoor with an outdoor pipe, and the other end is connected to the first air flow channel with an extension pipe; and An air guide unit, one end is connected to an air outlet of the above-mentioned inner shell, and the other end is connected to the outdoor or centrally processed by a duct.

Accordingly, in the supplementary air exhaust cabinet of the present invention, since the door set has an outer door and an inner door, and a first air flow channel is formed between the outer door and the inner door, and utilizes The outdoor pipe of an air supply unit introduces the outdoor air into the operating room. Therefore, when the air supply exhaust cabinet is used in operation, it can ensure that the introduced air comes from the outside and will not pump air into the airtight air-conditioned room. The temperature in the air-conditioning room can be controlled in a constant temperature state, which has the effect of saving energy.

Wherein, the inner casing is provided with a deflector, and a second airflow passage is formed between the deflector and the inner casing, and the second airflow passage communicates with the air outlet of the inner casing, so that the operation The effect that the gas in the room is discharged more effectively.

Wherein, the cabinet body is provided with a central processing unit, and a spraying member and a temperature sensing element are arranged in the inner shell, and the temperature sensing element can send a signal to the central processing unit to generate a warning signal or sound and start spraying. In this way, when abnormal conditions such as combustion are formed in the operating chamber, the abnormal conditions can be quickly eliminated.

Wherein, the central processing unit can instruct a power element to start the outer door and the inner door to close the operation window and the air inlet. In this way, when abnormal conditions such as combustion are formed in the operating room, it has the ability to prevent the abnormal conditions from spreading. Effect.

Wherein, the inner door is provided with several air holes, and the air holes communicate with the first air flow passage and the inner shell, so that the air replenished in the first air flow passage can also be filled into the operating room in a small amount through the air holes. Above, in this way, the vortex phenomenon formed above the operating chamber A can be effectively eliminated.

Wherein, the door set is provided with two counterweights, and the two counterweights are respectively connected to the above-mentioned outer door and the above-mentioned inner door with connectors, and two displacement sensors are arranged in the above-mentioned cabinet to sense the movement of the two counterweights. In this way, the two displacement sensors can send a signal to the central processing unit, and then the outer door and the inner door have easy lifting and precise displacement, so as to achieve the effect of accurately adjusting the exhaust air volume and supplementary air volume.

Wherein, the connecting piece can also be driven to rotate around the warp transmission assembly and the driven power element, thereby achieving the effect that the outer door piece and the inner door piece are conveniently controlled to rise and fall.

Among them, the above-mentioned door set also includes a pedal multi-stage control switch, which can control the above-mentioned outer door and inner door to be fully opened or partially opened at the same time, so that the operator can conveniently control the outer door and the inner door. The effect of door lift.

Wherein, the above-mentioned door set also includes a manual button, which can control the movement of the above-mentioned inner door, and then achieve the effect that the operator can conveniently control the lifting of the inner door.

Wherein, the door set includes an area sensor, which can send a signal to the central processing unit when a person leaves the supplementary air exhaust cabinet, so that the above-mentioned power element can drive the outer door and the inner door to move, In this way, when the operator leaves the supplementary air exhaust cabinet, the outer door and the inner door can be automatically closed to a set height, thereby ensuring that the gas in the supplementary air exhaust cabinet will not overflow.

Wherein, the supplementary air unit also includes an intake valve, and the opening angle of the intake valve can be changed to control the supplementary air volume, thereby achieving the effect of precisely controlling the supplementary air volume.

Wherein, the supplementary air unit further includes a first air volume detection element, and the first air volume detection element is arranged in the first air flow channel or the extension pipe, so as to achieve the effect of precisely controlling the supplementary air.

Wherein, the air guide unit is provided with an exhaust valve, and the opening angle of the exhaust valve can be changed to control the exhaust air volume, thereby achieving the effect of precisely controlling the exhaust air volume in the operating room to be greater than the make-up air volume of the first airflow channel .

Wherein, the air guide unit can also be provided with a power element of an exhaust fan, so as to achieve the effect of precisely controlling the exhaust air volume.

Wherein, the supplementary air unit is provided with a blower power element, thereby achieving the effect of precisely controlling the exhaust air volume in the operating room to be greater than the supplementary air volume in the first airflow channel.

Wherein, the air guide unit further includes a second air volume detection element, which is arranged in the inner casing, so as to achieve the effect of precisely controlling the exhaust air volume.

Description of drawings

Fig. 1: Schematic diagram of the structure of the exhaust cabinet in the prior art;

Fig. 2: a perspective view of a supplementary air exhaust cabinet according to a preferred embodiment of the present invention;

Fig. 3: a side sectional view of a supplementary air exhaust cabinet according to a preferred embodiment of the present invention;

Fig. 4: a perspective view of a door panel set in a preferred embodiment of the present invention;

Figure 5: Figure 1 of the action example of the supplementary air exhaust cabinet in Figure 3;

Figure 6: Figure 2 of the operation example of the supplementary air exhaust cabinet in Figure 3.

[Description of Reference Signs]

﹝this invention﹞

1 cabinet

10 base 11 inner shell

12 Air inlet 13 Operating window

14 Air deflector 15 Air outlet

16 Spray member 17 Temperature sensing element

18 central processing unit 19 displacement sensor

2 door groups

21 Outer door 22 Inner door

221 Air hole 23 Weight body

24 Connecting piece 25 Transmission component

26 Power element 27 Control switch

28 Area sensor 29 Manual button

20 panic button

3 make-up air unit

31 Outdoor tube 32 Extension tube

33 Air intake valve 34 The first air volume detection element

4 air guide unit

41 Conduit 42 Exhaust valve

43 Second air volume detection element

A operating room

P1 1st airflow path P2 2nd airflow path

〔current technology〕

9 exhaust cabinet

90 Air Conditioning Equipment 91 Operating Platform

92 Operating window 93 Door sheet

94 Air deflector 95 Exhaust channel

96 air outlet

A operating room

Detailed ways

In order to make the above-mentioned and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are specifically cited below, together with the accompanying drawings, as follows:

The directional terms mentioned in the description of the present invention, such as: above, below, inside, outside, etc. or their approximate terms, mainly refer to the directions of the drawings, and the directional terms are only used to assist in explaining and understanding the various embodiments of the present invention. , not to limit the present invention.

The "indoor" mentioned in the description of the present invention can be a building space, or an airtight space, or an air-conditioned airtight room, or a traditional laboratory.

The "outdoor" mentioned in the description of the present invention can be isolated from the outside of the above-mentioned building space, or the outside of the above-mentioned airtight space, or the outside of the above-mentioned air-conditioned air-tight room, or the outside of the above-mentioned traditional laboratory.

Please refer to Fig. 2, 3, it is a preferred embodiment of the air supply type exhaust cabinet of the present invention, a cabinet body 1 is provided with a door sheet group 2, an air supply unit 3 and an air guiding unit 4, the door The sheet group 2 is arranged on a surface of the cabinet body 1, and the door sheet group 2 further divides the cabinet body 1 into an operating room A and a first air flow channel P1 by an inner door sheet 22. The air supply unit 3 An outdoor air can be introduced into the first airflow channel P1 and the operation room A, and the air guide unit 4 can guide the air in the operation room A to the outside through the second air flow channel P2.

The cabinet body 1 preferably forms a square body and can be arranged on a base 10. The cabinet body 1 has an inner shell 11, and the inner shell 11 can encircle an operating room A and set an air inlet 12, which is connected with the inner shell 11. The surface of the cabinet body 1 opposite to the air inlet 12 is provided with an operation window 13, and the operation window 13 and the air inlet 12 can be opened and closed by an outer door sheet 21 and an inner door sheet 22 of the door sheet group 2 respectively. A first air flow channel P1 is formed between the inner shell 11 and the cabinet body 1 where the operation window 13 and the air inlet 12 are set, and the first air flow channel P1 communicates with the supplementary air unit 3 so that outdoor air can pass through the air inlet. The tuyeres 12 are added into the inner shell 11 . A deflector 14 can also be provided in the inner shell 11 to avoid forming a dead angle, so that the flow of the air flow can be smoother and can avoid the formation of turbulent flow, and a first deflector 14 can also be formed between the inner shell 11. The second air flow channel P2 is used to guide the air in the operating room A to the air guide unit 4 through the second air flow channel P2. The inner shell 11 is provided with an air outlet 15 , so that the air in the operating room A can be guided out through the air guide unit 4 through the air outlet 15 . A spraying member 16 can also be set in the inner shell 11, and the spraying member 16 can be connected with a fire extinguishing material (not shown in the accompanying drawings) and connected with a temperature sensing element 17. When abnormal phenomena such as combustion occur in the operating room A, The temperature sensing element 17 can send a warning signal or sound, and activate the outer door sheet 21 and the inner door sheet 22 of the door sheet group 2 to close the operation window 13 and the air inlet 12, and make the spraying member 16 spray fire extinguishing material . The top of this cabinet body 1 is provided with a central processing unit 18, and this central processing unit 18 can receive the signal that temperature sensing element 17, detection element and control element send and make corresponding action, the top of this cabinet body 1 is relatively It is best to form an unclosed through space, so that the door panel group 2 can be conveniently installed and maintained.

Please refer to Figures 1, 2 and 3, the door set 2 includes an outer door 21 and an inner door 22, the outer door 21 can be used to open and close the operation window 13 of the cabinet body 1, the inner door 22 can be used to open and close the air inlet 12 of the inner shell 11, the outer door 21 and the inner door 22 are preferably made of transparent materials such as explosion-proof glass, and the inner door 22 can also be provided with several air holes 221, The air hole 221 communicates with the first air flow channel P1 and the inner shell 11, so that a small amount of gas replenished in the first air flow channel P1 can be filled into the inner shell 11 through the several air holes 221, so that the gas formed in the operating room The vortex phenomenon above A can be effectively eliminated. In order to make the outer door 21 and the inner door 22 easy to lift, the door set 2 can also be provided with a counterweight 23, and the counterweight 23 is respectively connected to the outer door 21 and the inner door 22 with a connecting piece 24 such as a chain. , the connector 24 can also rotate around the transmission assembly 25 and be driven by a power element 26 such as a motor. If necessary, the cabinet 1 can also be provided with two displacement sensors 19, and the two displacement sensors 19 are electrically connected to the central processing unit 18 The two displacement sensors 19 can respectively sense the displacement of the counterweight 23 , and then the central processing unit 18 controls the displacement of the outer door 21 and the inner door 22 . In addition, in order to conveniently control the lifting of the outer door 21 and the inner door 22 , the door set 2 may further include a control switch 27 , an area sensor 28 , a manual button 29 and an emergency button 20 . Wherein, the control switch 27 can be a foot-operated control switch as shown in FIG. The sheet 22 is fully opened or partially opened at the same time; the area sensor 28 can be arranged at the position adjacent to the operation window 13 of the cabinet body 1, and when the operator leaves and does not use the exhaust cabinet, the area sensor 28 can sense and send out a The signal is sent to the above-mentioned central processing unit 18, and the above-mentioned power element 26 is started by the central processing unit 18, in order to drive the outer door sheet 21 and the inner door sheet 22 to drop to a set height; the manual button 29 can be pressed by the operator himself. Press to control the inner door 22 to rise and fall to the required height; moreover, in the operation room A of the cabinet 1, when abnormal conditions such as abnormal combustion occur, the operator can press the emergency button 20, The outer door sheet 21 and the inner door sheet 22 are rapidly lowered to close the operation window 13 and the air inlet 12, and the spraying member 16 is used to spray the fire extinguishing material.

The supplementary air unit 3 can supplement the outdoor air into the first airflow passage P1, which can be connected to the outside by an outdoor pipe 31 at one end, and connected to the first airflow passage P1 by an extension pipe 32 at the other end as shown in the figure. The supplementary air unit 3 can also be provided with an air intake valve 33, and the opening angle of the intake valve 33 can be changed to control the supplementary air volume. In addition, in order to accurately control the gas in the operating room A in a negative pressure state, the supplementary air unit 3 may also include a first air volume detection element 34, which is arranged in the first air flow channel P1 Or the extension pipe 32 is used to detect the supplementary air volume supplied from the outdoor pipe 31 into the inner casing 11 . When the first air volume detection element 34 senses that the supplementary air volume is greater than the set value, the first air volume detection element 34 will send a signal to the above-mentioned central processing unit 18 to control the intake valve 33 to open at a smaller angle, so as to reduce the supply air volume to the operating room A, so that the supplementary air volume in the operating room A is always smaller than the exhaust air volume of the first air flow channel P1, so as to ensure that the air in the operating room A will not circulate into the air outlet 12 and The operating window 13 overflows.

The air guide unit 4 can guide the air in the operating room A to the outside, as shown in the figure, one end is connected to an air outlet 15 of the inner shell 11, and the other end is connected to the outside with a conduit 41 Or be processed centrally, the air guide unit 4 can also be provided with an exhaust valve 42 and a second air volume detection element 43, the opening angle of the exhaust valve 42 can be changed to control the exhaust air volume, the second air volume detection The measuring element 43 is arranged in the inner shell 11, and is used for detecting the exhaust air volume discharged from the duct 41 to the outside. When the second air volume detection element 43 senses that the exhaust air volume is less than the set value, the second air volume detection element 43 will send a signal to the above-mentioned central processing unit 18 to control the exhaust valve 42 to open at a Larger angle, thereby achieving the effect of increasing the exhaust air volume to the outside. If necessary, the wind guide unit 4 can also be provided with power components such as exhaust fans, or the air supply unit 3 can be provided with power components such as blowers to make the flow of gas smoother, and to ensure that the supplementary air volume in the operating room A is always less than the first An exhaust air volume of the air passage P1.

Please refer to Fig. 5, which is the usage situation of the air supply type exhaust cabinet of the present invention, the user can manually press the manual button 29 or step on the control switch 27 to raise the outer door 21 and the inner door 22 to a predetermined height , In this way, the operator can work in the operating room A conveniently.

Please refer to Fig. 6, when an abnormal phenomenon such as combustion occurs in the operating room A, the sensing element 17 can send out a warning signal or sound, or the operator can activate the outer door of the door sheet group 2 by pressing the emergency button 20 Sheet 21 and inner door sheet 22 close the operation window 13, air inlet 12 and air intake valve 33 of the supplementary air unit 3, and make the spraying member 16 spray fire extinguishing material in the operation room A to avoid spreading to the supplementary air type exhaust cabinet.

To sum up, the air supply type exhaust cabinet of the present invention, since the door set 2 has an outer door 21 and an inner door 22, and a door is formed between the outer door 21 and the inner door 22. The first airflow passage P1, and the outdoor air is introduced into the operating room A by the outdoor pipe 31 of an air supply unit 3. Therefore, when the air supply type exhaust cabinet is used in operation, it can ensure that the introduced air comes from the outside and does not The air-tight air-conditioning room is pumped, so that the temperature in the air-conditioning room can be controlled at a constant temperature, which has the effect of saving energy.

Claims (16)

1. a kind of supplementary air type exhaust gas cabinet, which is characterized in that it includes：

One cabinet, there are one inner casings for tool, which goes out an operating room and set an air intake vent, opposite with the air intake vent Cabinet surface set an action pane, the cabinet of the action pane is set and the air intake vent is set the inner casing between Form first gas channel；

One door piece group, including an external door piece and an inner door sheet, external door piece can be used for aforesaid operations window being opened and closed, inner door sheet Available for the air intake vent of above-mentioned inner casing is opened and closed；

One benefit wind unit, is connected to outdoor, the other end is connected to first gas channel with extension by one end with outdoor pipe； And

One wind deflector unit is connected to an air outlet of above-mentioned inner casing by one end and is connected to by the other end with a conduit Outdoor is focused on.

2. supplementary air type exhaust gas cabinet according to claim 1, it is characterised in that：

Setting is there are one deflector in the inner casing, and second gas channel is formed between the deflector and the inner casing, this Two gas channels are connected with the air outlet of the inner casing.

3. supplementary air type exhaust gas cabinet according to claim 1, it is characterised in that：

The cabinet sets a central processing unit, and a sprinkling component and a temperature sensor, the temperature are set in the inner casing Sensing element can send out a signal to the central processing unit, to generate alarm signal or a sound and start the sprinkling structure Part.

4. supplementary air type exhaust gas cabinet according to claim 3, it is characterised in that：

The central processing unit can indicate a dynamical element, to start the external door piece and inner door sheet by the action pane and inlet air Mouth is closed.

5. supplementary air type exhaust gas cabinet according to claim 1, it is characterised in that：

The inner door sheet sets several stomatas, which connects first gas channel and the inner casing.

6. supplementary air type exhaust gas cabinet according to claim 4, it is characterised in that：

This piece group is provided with two weight bodies, which is connected to above-mentioned external door piece and above-mentioned inside door with connector Piece, and two displacement sensors are equipped with to sense the displacement of two weight body in above-mentioned cabinet.

7. supplementary air type exhaust gas cabinet according to claim 6, it is characterised in that：

The connector can drive rotation with pile warp transmission component and by dynamical element.

8. supplementary air type exhaust gas cabinet according to claim 6, it is characterised in that：

Above-mentioned door piece group further includes the control switch of foot-operated multisection type, and control switch can control above-mentioned external door piece and interior Door piece is opened simultaneously into standard-sized sheet or part.

9. supplementary air type exhaust gas cabinet according to claim 6, it is characterised in that：

Above-mentioned door piece group further includes a hand push button, which can control above-mentioned inner door sheet to move.

10. supplementary air type exhaust gas cabinet according to claim 4, it is characterised in that：

This piece group includes an area sensor, which can send out when personnel leave the supplementary air type exhaust gas cabinet One signal allows above-mentioned dynamical element that the external door piece and inner door sheet to be driven to close to a setting height to central processing unit Degree.

11. supplementary air type exhaust gas cabinet according to claim 1, it is characterised in that：

The benefit wind unit further includes an intake valve, which can be changed opening angle, to control benefit air quantity.

12. supplementary air type exhaust gas cabinet according to claim 1, it is characterised in that：

The benefit wind unit further includes a first air quantity detecing element, which is located at first gas channel Or in extension.

13. supplementary air type exhaust gas cabinet according to claim 1, it is characterised in that：

The wind deflector unit sets an air bleeding valve, which can be changed opening angle, to control exhaust air rate.

14. supplementary air type exhaust gas cabinet according to claim 1, it is characterised in that：

The wind deflector unit can also set exhaust fan dynamical element.

15. supplementary air type exhaust gas cabinet according to claim 1, it is characterised in that：

The benefit wind unit sets pressure fan dynamical element.

16. supplementary air type exhaust gas cabinet according to claim 1, it is characterised in that：

The wind deflector unit further includes a second air quantity detecing element, which is located in above-mentioned inner casing.