CN110560446A - Ventilation cabinet - Google Patents
Ventilation cabinet Download PDFInfo
- Publication number
- CN110560446A CN110560446A CN201910732314.3A CN201910732314A CN110560446A CN 110560446 A CN110560446 A CN 110560446A CN 201910732314 A CN201910732314 A CN 201910732314A CN 110560446 A CN110560446 A CN 110560446A
- Authority
- CN
- China
- Prior art keywords
- exhaust
- air
- air supply
- wallboard
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
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- Devices For Use In Laboratory Experiments (AREA)
Abstract
The invention discloses a fume hood, which comprises a working space, a plurality of air inlets and a plurality of air outlets, wherein the working space forms the working space of the fume hood; an air supply chamber having an air supply port communicating with the work space and an air supply pipe communicating with the outside; an air supply system capable of introducing external air into the work space through the air supply chamber; an exhaust chamber having an exhaust port communicating with the work space and an exhaust pipe communicating with the outside; and an exhaust system capable of exhausting air introduced into the working space from the outside and harmful gas generated in the working space to the outside through the exhaust chamber. The ventilation cabinet is provided with the external air which is exhausted together with the generated harmful gas, so that the air pressure in the laboratory can be prevented from rising, and the working environment of the laboratory can be improved. On the basis of discharging harmful gas generated in a laboratory, outside air is introduced into the equipment, so that the function and the efficiency of the fume hood are improved.
Description
Technical Field
The invention is used in the field of experimental equipment, and particularly relates to a fume hood.
background
Typically, a counter-top fume hood is used for the purpose of cleaning the laboratory environment.
Except for a microorganism laboratory, other laboratories which generate a large amount of harmful gases such as organic and inorganic preprocessing and the like need to use a fume hood, so the fume hood is used for ensuring the safety of laboratory personnel using organic solvents, dust, biological substances, biological dangerous substances and the like.
the inside workspace that has of general fume chamber, there is the air exit at the top, has the operation panel in the workspace, bench installation experimental facilities, and the harmful gas that experimental facilities produced is discharged to the air exit.
However, when the fume hood is used in a sealed environment, air supply equipment needs to be additionally provided, and when the fume hood is used in an indoor sealed environment, outside air, dust and discharged air can enter a laboratory through a gap of a door or a window, so that the cleanness and the balance of the temperature and the humidity in the laboratory are difficult to keep through forced air supply equipment.
Harmful gases generated in a common fume hood are directly exhausted to the outside without being treated basically, so that outdoor air pollution is caused, and the safety of outdoor personnel is threatened.
general fume chamber can a large amount of exhaust when using, leads to that indoor air is not enough, atmospheric pressure rises, and the outdoor gas of discharge can enter into indoorly more easily like this, and the laboratory staff can get the disease in the aspect of the respiratory track more easily.
A common fume hood hardly keeps indoor constant temperature and humidity through a large amount of exhaust, and if the indoor constant temperature and humidity are to be kept, a large amount of energy needs to be wasted, and the cost of a laboratory is increased.
In order to increase the exhaust volume, a general fume hood uses a high-power exhaust fan, so that the cost is high, but a good effect cannot be achieved.
Disclosure of Invention
the present invention has been made to solve at least one of the problems occurring in the prior art, and an object of the present invention is to provide a hood which introduces outside air into equipment on the basis of exhausting harmful gas generated in a laboratory, thereby improving the function and efficiency of the hood.
The technical scheme adopted by the invention for solving the technical problems is as follows: a ventilation cabinet comprises
The working space is arranged inside the fume hood;
An air supply chamber having an air supply port communicating with the work space and an air supply pipe communicating with the outside;
An air supply system capable of introducing external air into the work space through the air supply chamber;
An exhaust chamber having an exhaust port communicating with the work space and an exhaust pipe communicating with the outside; and
and the exhaust system can exhaust air introduced into the working space from the outside and harmful gas polluted in the working space to the outside through the exhaust chamber.
Preferably, the fume chamber has the shell, workspace has top wallboard, end wallboard, preceding wallboard, back wallboard, left wallboard and right wallboard, workspace's top wallboard, preceding wallboard, left wallboard and right wallboard and intermediate layer between the shell forms the air supply chamber, be equipped with on workspace's top wallboard, preceding wallboard, left wallboard and right wallboard the air supply mouth, workspace's back wallboard with intermediate layer between the shell forms the air discharge chamber, be equipped with on workspace's the back wallboard the air discharge mouth.
Preferably, the gas supply system comprises
the air supply fan is connected with the air supply pipe;
And a supply air filter capable of removing dust from outside air introduced into the work space through the supply duct.
Preferably, the exhaust system comprises
The exhaust fan is connected with the exhaust pipe;
And an exhaust filter capable of removing harmful gas discharged through the exhaust pipe.
Preferably, calcium hydroxide or sodium hydroxide or a mixture of calcium hydroxide and sodium hydroxide is arranged in the air supply filter and/or the air exhaust filter.
Preferably, the gas supply system further comprises
A gas supply sensor capable of detecting an internal pressure of the work space;
And the air supply electric air valve is connected with the air supply pipe and can control the air supply amount of the external air according to the signal of the air supply sensor.
Preferably, the exhaust system further comprises
An exhaust gas sensor capable of detecting an internal pressure of the work space;
And the exhaust electric air valve is connected with the exhaust pipe and can control the exhaust amount of harmful gas according to the signal of the exhaust sensor.
Preferably, still include the controller, air feed sensor, air feed electronic blast gate, exhaust sensor and exhaust electronic blast gate all with the controller is connected.
Preferably, the device further comprises a display screen, and the display screen is connected with the controller.
Preferably, the gas supply pipe and the gas exhaust pipe are both located at the top of the housing.
one of the above technical solutions has at least one of the following advantages or beneficial effects:
The ventilation cabinet is provided with the external air which is exhausted together with the generated harmful gas, so that the air pressure in the laboratory can be prevented from rising, and the working environment of the laboratory can be improved.
on the basis of discharging harmful gas generated in a laboratory, outside air is introduced into the equipment, so that the function and the efficiency of the fume hood are improved.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a schematic cross-sectional isometric view of one embodiment shown in FIG. 1;
FIG. 3 is a cross-sectional side view of one embodiment shown in FIG. 1.
reference numerals:
The air box 100, the space room 110, the air supply room 120, the air supply port 121, the air supply pipe 122, the air supply system 123, the air supply fan 124, the air supply filter 125, the air discharge filter 135, the air supply electric air valve 126, the air discharge electric air valve 136, the air supply sensor 127, the air supply sensor 137, the air discharge room 130, the air discharge port 131, the air discharge pipe 132, the air discharge system 133, and the air discharge fan 134.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
in the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.
In the present invention, "a plurality" means one or more, "a plurality" means two or more, "more than", "less than", "more than", and the like are understood as not including the number; the terms "above", "below", "within" and the like are to be understood as including the number. In the description of the present invention, if there is description of "first" and "second" for the purpose of distinguishing technical features only, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the present invention, unless explicitly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
The laboratory worker's hands for operating, testing or treating the harmful material of the fume hood 100 of the present invention are the same as those of a general fume hood, and detailed explanation thereof may be omitted.
Referring to fig. 1, an embodiment of the present invention provides a fumehood 100 comprising a workspace, an air supply plenum 120, an air supply system 123, an air exhaust plenum 130, and an air exhaust system 133, wherein the workspace is provided inside the fumehood; the air supply chamber 120 has an air supply port 121 communicating with the work space and an air supply pipe 122 communicating with the outside; the air supply system 123 can introduce external air into the work space through the air supply chamber 120; the exhaust chamber 130 has an exhaust port 131 communicating with the work space and an exhaust pipe 132 communicating with the outside; and the exhaust system 133 can exhaust air introduced into the work space from the outside and harmful gas generating pollution in the work space to the outside through the exhaust chamber 130.
the ventilation hood 100 is introduced with external air, and the external air is discharged together with generated harmful gas, so that the air pressure in the laboratory can be prevented from rising, and the working environment of the laboratory can be improved. Which introduces outside air into the equipment on the basis of exhausting harmful gases generated in the laboratory, thereby improving the function and efficiency of the hood 100.
the fume hood 100 purifies harmful gas generated from the fume hood, discharges the gas through an exhaust pipe, and introduces external air. The space 110 for inducing the flow of air is formed of a double structure, and the space 110 is formed of an air supply chamber 120 and an air discharge chamber 130. Referring to fig. 2 and 3, the fumehood 100 has a housing, a working space having a top wall panel 110b, a bottom wall panel 110a, a front wall panel 110c, a rear wall panel 110e, a left wall panel and a right wall panel 110d, an air supply chamber 120 formed by interlayers between the top wall panel 110b, the front wall panel 110c, the left wall panel and the right wall panel 110d of the working space and the housing, the housing and the walls of the working space forming a double-layer structure, the air supply chamber 120 for introducing air, air supply ports 121 provided on the top wall panel 110b, the front wall panel 110c, the left wall panel and the right wall panel 110d of the working space, air supply ducts 122 provided in spaces on the top, the left and right sides, and the front of the fumehood 100 except a lower floor of the working space, and external air is introduced into the working space through the air.
Referring to fig. 2 and 3, an exhaust chamber 130 is formed by an interlayer between the rear wall panel 110e of the working space and the housing, the exhaust chamber 130 extends from the top to the rear of the working space, an exhaust port 131 is formed in the rear wall panel 110e of the working space, and air introduced into the working space from the outside is exhausted together with harmful gas generated from the hood 100 through the air supply chamber 120.
referring to fig. 1 and 2, the air supply pipe 122 and the air exhaust pipe 132 are both located at the top of the housing.
Here, referring to fig. 1, the air supply system 123 includes an air supply fan 124 and an air supply filter 125, and the air supply fan 124 is connected to the air supply duct 122 for introducing external air into the work space. The air supply filter 125 is used to remove dust from the outside air introduced into the work space through the air supply pipe 122, and prevent the dust from the outside air from entering the work space.
Referring to fig. 1, the exhaust system 133 includes an exhaust fan 134 and an exhaust filter 135, and the exhaust fan 134 is connected to the exhaust duct 132 for exhausting air introduced into the work space from the outside and harmful gas generated in the work space to the outside through the exhaust chamber 130. The exhaust filter 135 is used to remove harmful gas discharged through the exhaust pipe 132, and prevent the harmful gas from being directly discharged to the outside, thereby causing pollution of outdoor air and threatening the safety of outdoor personnel.
In some embodiments, the exhaust system 133 and the gas supply system 123 may use an exhaust filter 135 for removing harmful gases and a high efficiency filter for removing dust, such as activated carbon or zeolite, to remove organic harmful gases that cannot be removed by the general perchloric acid fume hood 100.
In some embodiments, the introduction of the acid-base gas by the gas supply filter 125 and/or the gas exhaust filter 135 may collect or dissolve the collected particles, and the substance dissolving the collected particles is calcium hydroxide or sodium hydroxide or a mixture of calcium hydroxide and sodium hydroxide.
Referring to fig. 1, in some embodiments, the air supply system 123 further includes an air supply sensor 127 and an air supply electric damper 126, the air supply sensor 127 being configured to detect an internal pressure of the work space; an air supply electric damper 126 is connected to the air supply pipe 122 for controlling the supply amount of the outside air in accordance with a signal from the air supply sensor 127. The exhaust system 133 further includes an exhaust sensor 137 and an exhaust electric damper 136, the exhaust sensor 137 being used to detect the internal pressure of the work space; an exhaust electric damper 136 is connected to the exhaust pipe 132 for controlling the exhaust amount of the harmful gas according to a signal from the exhaust sensor 137.
The air supply sensor 127 and the air discharge sensor 137 are formed by pressure reduction sensors for sensing the internal pressure of the work space, and the air supply system 123 for introducing the external air and the air discharge system 133 for discharging the harmful gas can be manually or automatically controlled according to the data of the air supply sensor 127 and the air discharge sensor 137. Preferably, a controller is further included, the air supply sensor 127, the air supply electric air valve 126, the air exhaust sensor 137 and the air exhaust electric air valve 136 are all connected with the controller, and the controller automatically controls the air supply system 123 for introducing the external air and the air exhaust system 133 for exhausting the harmful gas according to the data of the air supply sensor 127 and the air exhaust sensor 137.
In some embodiments, a display screen is further included, and the display screen is connected to the controller, and the display screen can display the states of the exhaust system 133 and the air supply system 123, and the display screen on the controller can be used to know whether a fault occurs.
The inside of the hood 100 is introduced with external air through the air supply chamber 120 at the front and both sides of the working space, and harmful gas generated in the hood 100 is exhausted to the outside through the exhaust chamber 130 and the exhaust duct 132 through the exhaust ports 131 at the top and the rear of the hood 100.
and the external air introduced through the front and both side surfaces of the hood 100 is gradually raised toward the rear of the interior through the bottom of the work space, moved to the top, and exhausted to the outside through the exhaust chamber 130 and the exhaust duct 132.
The filter for removing harmful gas in the exhaust system 133 for exhausting air introduced from the outside and harmful gas generating pollution in the work space includes a collecting device, and collected particles are purified by dissolved substances and then exhausted, thereby preventing pollution to the laboratory environment.
In addition, the working space of the embodiment of the invention introduces a proper amount of outside air, so that the exhaust function of the fume hood 100 is improved, and the air pressure is prevented from being increased due to excessive air loss in a laboratory.
In the embodiment of the invention, external air is introduced into the working space of the laboratory ventilation cabinet 100, so that excessive energy consumption and high cost caused by maintaining constant temperature and humidity in a laboratory when indoor air flows away are prevented.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. fume chamber, its characterized in that: comprises that
the working space is arranged inside the fume hood;
An air supply chamber having an air supply port communicating with the work space and an air supply pipe communicating with the outside;
an air supply system capable of introducing external air into the work space through the air supply chamber;
an exhaust chamber having an exhaust port communicating with the work space and an exhaust pipe communicating with the outside; and
And the exhaust system can exhaust air introduced into the working space from the outside and harmful gas polluted in the working space to the outside through the exhaust chamber.
2. A fumehood according to claim 1, wherein: the fume chamber has the shell, workspace has top wallboard, end wallboard, preceding wallboard, back wallboard, left wallboard and right wallboard, workspace's top wallboard, preceding wallboard, left wallboard and right wallboard and intermediate layer between the shell forms the air supply chamber, be equipped with on workspace's top wallboard, preceding wallboard, left wallboard and right wallboard the air supply mouth, workspace's back wallboard with intermediate layer between the shell forms the air discharge chamber, be equipped with on workspace's the back wallboard the air discharge mouth.
3. A fumehood according to claim 1, wherein: the gas supply system comprises
The air supply fan is connected with the air supply pipe;
And a supply air filter capable of removing dust from outside air introduced into the work space through the supply duct.
4. A fumehood according to claim 3, wherein: the exhaust system comprises
The exhaust fan is connected with the exhaust pipe;
And an exhaust filter capable of removing harmful gas discharged through the exhaust pipe.
5. A fumehood according to claim 4 wherein: and calcium hydroxide or sodium hydroxide or a mixture of the calcium hydroxide and the sodium hydroxide is arranged in the air supply filter and/or the air exhaust filter.
6. A fumehood according to claim 4 wherein: the gas supply system further comprises
A gas supply sensor capable of detecting an internal pressure of the work space;
And the air supply electric air valve is connected with the air supply pipe and can control the air supply amount of the external air according to the signal of the air supply sensor.
7. A fumehood according to claim 6, wherein: the exhaust system further comprises
An exhaust gas sensor capable of detecting an internal pressure of the work space;
and the exhaust electric air valve is connected with the exhaust pipe and can control the exhaust amount of harmful gas according to the signal of the exhaust sensor.
8. A fumehood according to claim 7, wherein: the air supply sensor, the air supply electric air valve, the exhaust sensor and the exhaust electric air valve are all connected with the controller.
9. a fumehood according to claim 8 wherein: the display screen is connected with the controller.
10. A fumehood according to claim 2 wherein: the air supply pipe and the exhaust pipe are both positioned at the top of the shell.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20190078774 | 2019-07-01 | ||
| KRKR1020190078774 | 2019-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110560446A true CN110560446A (en) | 2019-12-13 |
Family
ID=68774972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910732314.3A Pending CN110560446A (en) | 2019-07-01 | 2019-08-09 | Ventilation cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110560446A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618062A (en) * | 2020-05-20 | 2020-09-04 | 西安长庆科技工程有限责任公司 | Fume hood with simple tail gas treatment facility and tail gas treatment method |
| CN113578908A (en) * | 2021-08-02 | 2021-11-02 | 深圳市嘉鸿顺实业有限公司 | Ventilation cabinet |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6907298A (en) * | 1969-05-12 | 1970-11-16 | ||
| CN202356386U (en) * | 2011-12-13 | 2012-08-01 | 深圳市威尔迅驰科技有限公司 | Energy-saving ventilation cabinet with centered air supplement |
| CN104101065A (en) * | 2014-06-25 | 2014-10-15 | 南京诺丹工程技术有限公司 | Air supplement control system used for air supplement air curtain of ventilation cabinet |
| CN104438273A (en) * | 2014-11-18 | 2015-03-25 | 天长市明辉实验设备有限公司 | Novel laboratory fume cupboard |
| CN205362184U (en) * | 2016-01-18 | 2016-07-06 | 重庆松昌科技有限公司 | Novel ventilation hood |
| CN109530382A (en) * | 2015-04-10 | 2019-03-29 | 倚世节能科技（上海）有限公司 | Vent cabinet |
| CN208853426U (en) * | 2018-06-11 | 2019-05-14 | 广州惠勒实验室设备有限公司 | A kind of laboratory hood wind speed control system |
-
2019
- 2019-08-09 CN CN201910732314.3A patent/CN110560446A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6907298A (en) * | 1969-05-12 | 1970-11-16 | ||
| CN202356386U (en) * | 2011-12-13 | 2012-08-01 | 深圳市威尔迅驰科技有限公司 | Energy-saving ventilation cabinet with centered air supplement |
| CN104101065A (en) * | 2014-06-25 | 2014-10-15 | 南京诺丹工程技术有限公司 | Air supplement control system used for air supplement air curtain of ventilation cabinet |
| CN104438273A (en) * | 2014-11-18 | 2015-03-25 | 天长市明辉实验设备有限公司 | Novel laboratory fume cupboard |
| CN109530382A (en) * | 2015-04-10 | 2019-03-29 | 倚世节能科技（上海）有限公司 | Vent cabinet |
| CN205362184U (en) * | 2016-01-18 | 2016-07-06 | 重庆松昌科技有限公司 | Novel ventilation hood |
| CN208853426U (en) * | 2018-06-11 | 2019-05-14 | 广州惠勒实验室设备有限公司 | A kind of laboratory hood wind speed control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618062A (en) * | 2020-05-20 | 2020-09-04 | 西安长庆科技工程有限责任公司 | Fume hood with simple tail gas treatment facility and tail gas treatment method |
| CN113578908A (en) * | 2021-08-02 | 2021-11-02 | 深圳市嘉鸿顺实业有限公司 | Ventilation cabinet |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191213 |
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| RJ01 | Rejection of invention patent application after publication |