CN213134421U - Fume hood with automatic fire extinguishing function - Google Patents
Fume hood with automatic fire extinguishing function Download PDFInfo
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- CN213134421U CN213134421U CN202021847309.1U CN202021847309U CN213134421U CN 213134421 U CN213134421 U CN 213134421U CN 202021847309 U CN202021847309 U CN 202021847309U CN 213134421 U CN213134421 U CN 213134421U
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- fume hood
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Abstract
The utility model provides a fume hood with an automatic fire extinguishing function, which relates to the technical field of laboratory equipment and comprises a fume hood body, wherein the fume hood body is provided with an exhaust pipe and a glass lifting door, and further comprises a fire extinguishing mechanism, a flame detector and a control unit, the fire extinguishing mechanism comprises a fire extinguishing tank and a fire extinguishing nozzle, the fire extinguishing tank is arranged on the fume hood body, an automatic valve is arranged at the outlet of the fire extinguishing tank, the fire extinguishing nozzle is arranged in the fume hood and is communicated with the automatic valve through a fire extinguishing hose, the flame detector is arranged in the fume hood and is used for detecting the occurrence of flame, and the control unit is respectively electrically connected with the flame detector and the automatic; the condition in the fume chamber is detected through the flame detector, and the article that can handle in the cabinet is detected and is sent out the signal by the flame detector at the initial stage of catching a fire, and the linkage of controller control automatic fire extinguisher sprays extinguishing agent, quick automatic fire extinguishing.
Description
Technical Field
The application relates to the technical field of laboratory equipment, particularly, relate to a fume chamber of taking automatic fire extinguishing function.
Background
In a research place such as a hospital, a school, various research institutes and the like, experimental research is frequently required, air pollution in a laboratory is often caused due to the use of various chemical substances in the laboratory, and some substances are bad in taste and harmful to health, so that the experimental research is required to be carried out by adopting a fume hood. With the improvement of safety consciousness, occasions using the fume hood are more and more. Some articles treated in the fume hood may have fire hazards.
SUMMERY OF THE UTILITY MODEL
An object of the application provides a take fume chamber of automatic fire extinguishing function, its condition in surveying the fume chamber through flame detector, article that can be in the in cabinet processing are at the initial stage of catching a fire, are detected and send out the signal by flame detector, and the linkage of controller control automatic fire extinguisher sprays the fire extinguishing agent, quick automatic fire extinguishing.
The embodiment of the application is realized by the following technical scheme:
the utility model provides a take fume chamber of automatic fire extinguishing function, includes the fume chamber body, the fume chamber body is equipped with exhaust pipe and glass overhead door, still includes fire extinguishing mechanism, flame detector and the control unit, fire extinguishing mechanism is including fire extinguishing tank and fire extinguishing nozzle, fire extinguishing tank install in the fume chamber body, the export of fire extinguishing tank is equipped with automatic valve, and fire extinguishing nozzle installs in the fume chamber and through fire hose intercommunication automatic valve, flame detector installs the emergence that is used for detecting flame in the fume chamber, the control unit is connected in flame detector and automatic valve electricity respectively.
Further, the flame detector also comprises an audible and visual alarm which is electrically connected with the control unit and used for giving an alarm by emitting audible and visual signals when the flame detector detects flame.
Furthermore, the exhaust pipe of fume chamber body is equipped with automatic blast gate, automatic blast gate electricity connect in the control unit.
And the opening and closing control mechanism is electrically connected with the control unit and used for closing the glass lifting door when the flame detector detects flame.
Further, switching control mechanism includes a plurality of pulleys, rotatory output mechanism, zip and balancing weight, rotatory output mechanism install in the fume chamber body, a plurality of pulley mounting are in the fume chamber, zip one end connect in glass overhead door upper end, the zip other end is connected the balancing weight, and on a plurality of pulleys of zip wraparound, rotatory output mechanism installs in fume chamber and its output transmission connection pulley.
Furthermore, the fire extinguishing nozzle comprises a connecting part used for being connected with a fire extinguishing hose, a nozzle used for spraying mist and a nozzle body connected between the connecting part and the nozzle, at least two swirl flow deflectors which are arranged in an oblique manner are arranged in the nozzle body, a swirl pore channel is formed by oblique gaps of the at least two swirl flow deflectors, and at least one direct pore channel is radially arranged on each swirl flow deflector so that direct fluid sprayed from the direct pore channel and swirl fluid sprayed from the swirl pore channel realize turbulent flow.
Furthermore, the cyclone flow deflectors are semicircular, and planes of the two semicircular cyclone flow deflectors are obliquely arranged at an included angle of 30-90 degrees.
The technical scheme of the embodiment of the application has at least the following advantages and beneficial effects:
this application reasonable in design, simple structure through the condition in the flame detector surveys the fume chamber, and the article that can handle in the cabinet is detected and is sent out the signal by flame detector at the initial stage of catching a fire, and the linkage of controller control automatic fire extinguisher sprays the fire extinguishing agent, quick automatic fire extinguishing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic front view of a fume hood with an automatic fire extinguishing function according to embodiment 1 of the present application;
fig. 2 is a schematic side view of a fume hood with an automatic fire extinguishing function according to embodiment 1 of the present application;
fig. 3 is a schematic structural diagram of a showerhead provided in embodiment 1 of the present application;
fig. 4 is a partial view of an oblique structure of a baffle in a sprinkler provided in embodiment 1 of the present application;
FIG. 5 is a top view of FIG. 4;
icon: 1-a fume hood body, 11-an automatic air valve, 12-a glass lifting door, 121-an opening and closing control mechanism, 121 a-a pulley, 121 b-a rotary output mechanism, 121 c-a zipper, 121 d-a balancing weight, 2-a fire extinguishing mechanism, 21-a fire extinguishing tank, 22-a fire extinguishing nozzle, 221-a nozzle body, 222-a swirl flow deflector, 223-a swirl hole channel, 224-a direct injection hole channel, 23-an automatic valve, 24-a fire extinguishing hose, 3-a flame detector, 4-a control unit and 5-an audible and visual alarm.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1
As shown in fig. 1 to 5, the embodiment provides a fume hood with an automatic fire extinguishing function, which comprises a fume hood body, wherein the fume hood body is provided with an exhaust pipe and a glass lifting door, and further comprises a fire extinguishing mechanism, a flame detector and a control unit, the fire extinguishing mechanism comprises a fire extinguishing tank and a fire extinguishing nozzle, the fire extinguishing tank is mounted on the fume hood body, an automatic valve is arranged at an outlet of the fire extinguishing tank, the fire extinguishing nozzle is mounted in the fume hood and is communicated with the automatic valve through a fire extinguishing hose, the flame detector is mounted in the fume hood for detecting the occurrence of flame, and the control unit is electrically connected with the flame detector and the automatic valve respectively; design more than adopting, through the condition in the fire detector surveys the fume chamber, article that can handle in the cabinet are detected and are sent out the signal by the fire detector at the initial stage of catching a fire, and the linkage of controller control automatic fire extinguisher sprays the fire extinguishing agent, quick automatic fire extinguishing.
In order to let the staff in time know the conflagration that takes place, this device still includes audible-visual annunciator, audible-visual annunciator is connected with the control unit electricity and is used for sending reputation when flame detector detects flame and reports to the police, design more than the adoption, report to the police through sound and light, can make the staff audio-visual understanding to have taken place the conflagration in the fume chamber, can in time handle, and simultaneously, audible-visual annunciator's warning can be triggered earlier, start the fire extinguishing operation of putting out a fire the mechanism after interval a period, design more than the adoption, can give staff certain operating time, whether the judgement of accessible staff decides need put out a fire, avoid flame detector wrong report, lead to the loss of sample.
In order to have better fire extinguishing effect, in this embodiment, the exhaust pipe of fume chamber body is equipped with automatic blast gate, and automatic blast gate electricity is connected in the control unit, and when fire detector detected there is flame, the automatic blast gate of control unit control was closed, reduced the oxygen content in the fume chamber, played better fire extinguishing effect. In a similar way, in this embodiment, this device still includes the on-off control mechanism who is used for controlling the glass lift door and opens and close, and on-off control mechanism is connected with the control unit electricity and is used for closing the glass lift door when flame detector detects flame. Particularly, switching control mechanism includes a plurality of pulleys, rotatory output mechanism, zip and balancing weight, and rotatory output mechanism installs in the fume chamber body, and a plurality of pulleys are installed in the fume chamber, and zip one end is connected in glass lift door upper end, and the zip other end is connected in the balancing weight, and on the zip round-connection a plurality of pulleys, rotatory output mechanism installed in the fume chamber and its output transmission connection pulley.
In this embodiment, the fire extinguishing nozzle includes a connection portion for connecting with a fire extinguishing hose, a nozzle for spraying mist, and a nozzle body connected between the connection portion and the nozzle, at least two swirl flow deflectors arranged in an oblique manner are provided in the nozzle body, a swirl flow channel is formed by an oblique clearance of the at least two swirl flow deflectors, at least one (preferably 1 to 4) direct flow channel is provided on each swirl flow deflector along a radial direction so that a turbulent flow is realized between direct flow sprayed from the direct flow channel and swirl flow sprayed from the swirl flow channel, preferably, the swirl flow deflectors are semi-circular, planes of the two semi-circular swirl flow deflectors are arranged in an oblique manner at an included angle of 30 to 90 degrees, and a square "S" in fig. 5 is a contact portion between the two obliquely crossed flow deflectors and the nozzle body or a positioning portion for fixing the two obliquely crossed flow deflectors.
Two common hydraulic generation methods for mist generation today are: a direct pressure spray type in which high-pressure liquid is sprayed at high speed through a nozzle, and a swirl atomization type in which liquid is supplied to a cup or a raw plate rotating at high speed and swirl atomization is performed by centrifugal force. The direct pressure spray type mist has large axial kinetic energy, long spray distance, large flow, poor atomization effect and poor charged insulation capability; the diameter of the mist of the rotational flow atomization type mist is small, the distribution of the mist is uniform, the atomization angle is large, and the charged insulating property is good. The spray head has the advantages of direct injection pressure spray type spray head and rotational flow spray type spray head, and has long spray distance and good atomization effect.
In the embodiment, the atomizing cone angle of the nozzle is 30-90 degrees, and the nozzle has better swirl atomizing effect and better droplet electrification insulating property when the atomizing cone angle is 30-90 degrees, wherein the preferable atomizing cone angle is 30-50 degrees, and the optimal atomizing cone angle is 35 degrees. In the embodiment, 2 direct injection holes are formed in the rotational flow guide piece, direct injection and rotational flow turbulent flow spraying are realized through the direct injection holes, and the injection distance is obviously increased.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. The utility model provides a take fume chamber of automatic fire extinguishing function, includes the fume chamber body, the fume chamber body is equipped with exhaust pipe and glass-frame riser door, its characterized in that: still including fire extinguishing mechanism, flame detector and the control unit, fire extinguishing mechanism is including the jar of putting out a fire and the shower nozzle of putting out a fire, the jar of putting out a fire install in the fume chamber body, the jar export of putting out a fire is equipped with automatic valve, and the shower nozzle of putting out a fire is installed in the fume chamber and is linked through fire hose automatic valve, flame detector installs the emergence that is used for detecting flame in the fume chamber, the control unit is connected in flame detector and automatic valve electricity respectively.
2. The fume hood with automatic fire extinguishing function according to claim 1, wherein: the flame detector is electrically connected with the control unit and used for sending out sound and light to give an alarm when the flame detector detects flame.
3. The fume hood with automatic fire extinguishing function according to claim 1, wherein: the exhaust pipe of fume chamber body is equipped with automatic blast gate, automatic blast gate electricity connect in the control unit.
4. The fume hood with automatic fire extinguishing function according to claim 1, wherein: the glass lifting door is characterized by further comprising an opening and closing control mechanism used for controlling the opening and closing of the glass lifting door, and the opening and closing control mechanism is electrically connected with the control unit and used for closing the glass lifting door when the flame detector detects flame.
5. The fume hood with automatic fire extinguishing function according to claim 4, characterized in that: the opening and closing control mechanism comprises a plurality of pulleys, a rotary output mechanism, a zipper and a balancing weight, the rotary output mechanism is installed on the fume hood body, the pulleys are installed on the fume hood, one end of the zipper is connected to the upper end of the glass lifting door, the other end of the zipper is connected with the balancing weight, the zipper is wound on the pulleys, and the rotary output mechanism is installed on the fume hood and the output end of the fume hood in a transmission mode and is connected with the pulleys.
6. The fume hood with automatic fire extinguishing function according to claim 1, wherein: the fire extinguishing nozzle comprises a connecting part used for being connected with a fire extinguishing hose, a nozzle used for spraying mist and a nozzle body connected between the connecting part and the nozzle, at least two swirl flow deflectors which are arranged in an oblique manner are arranged in the nozzle body, a swirl pore passage is formed by oblique gaps of the at least two swirl flow deflectors, and at least one direct injection pore passage is radially arranged on each swirl flow deflector so that direct injection fluid sprayed from the direct injection pore passage and swirl fluid sprayed from the swirl pore passage realize turbulent flow.
7. A fume hood with automatic fire extinguishing function according to claim 6, characterized in that: the cyclone flow deflectors are semicircular, and planes of the two semicircular cyclone flow deflectors are obliquely arranged at an included angle of 30-90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021847309.1U CN213134421U (en) | 2020-08-28 | 2020-08-28 | Fume hood with automatic fire extinguishing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021847309.1U CN213134421U (en) | 2020-08-28 | 2020-08-28 | Fume hood with automatic fire extinguishing function |
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| Publication Number | Publication Date |
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| CN213134421U true CN213134421U (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021847309.1U Active CN213134421U (en) | 2020-08-28 | 2020-08-28 | Fume hood with automatic fire extinguishing function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023092877A1 (en) * | 2021-11-25 | 2023-06-01 | 倚世节能科技（上海）有限公司 | Fume hood and fire-extinguishing method |
| CN116585643A (en) * | 2023-07-14 | 2023-08-15 | 倚世节能科技（上海）有限公司 | Fire extinguishing method and computer storage medium |
-
2020
- 2020-08-28 CN CN202021847309.1U patent/CN213134421U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023092877A1 (en) * | 2021-11-25 | 2023-06-01 | 倚世节能科技（上海）有限公司 | Fume hood and fire-extinguishing method |
| CN116585643A (en) * | 2023-07-14 | 2023-08-15 | 倚世节能科技（上海）有限公司 | Fire extinguishing method and computer storage medium |
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