CN210358473U

CN210358473U - Energy-conserving intelligent fume hood

Info

Publication number: CN210358473U
Application number: CN201920792799.0U
Authority: CN
Inventors: 张�浩
Original assignee: Sino Pharmengin Corp
Current assignee: Sino Pharmengin Corp
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-04-21
Anticipated expiration: 2029-05-29

Abstract

The utility model relates to the technical field of experimental ventilation, and provides an energy-saving intelligent fume hood, which comprises a body with a cavity, an electric three-way valve, a fresh air channel, an exhaust channel, an electric airtight valve and a return air channel, wherein the air outlet of the fresh air channel is communicated with one interface of the three-way valve, and the remaining two interfaces of the three-way valve are respectively communicated with the air inlet and the air outlet of the return air channel; the body is provided with a computer which is used for controlling the conduction of three interfaces of the electric three-way valve and controlling the work of the electric sealed valve. The utility model discloses an aspect makes the air in the cavity flow through the return air passageway, has avoided operation panel department pollutant concentration not up to standard, and on the other hand passes through the cooperation of electronic three-way valve and electronic airtight valve, can confirm whether exhaust air or make the air circulate in the cavity according to the pollution conditions of air and flow, when the air circulates in the cavity, can alleviate the cavity load, and then practiced thrift the energy.

Description

Energy-conserving intelligent fume hood

Technical Field

The utility model relates to an experiment ventilation technical field specifically is an energy-conserving intelligent fume hood.

Background

In carrying out the scientific experiment, inevitably utilize volatility or dangerous material to carry out the experiment and explore, adopt the fume hood can control the diffusion scope of pollutant effectively, play better environmental protection benefit, but present fume hood ventilation mode is comparatively single, only set up the exhaust duct, can't guarantee personnel operation panel department pollutant concentration and reach the requirement, in addition, do not classify the pollutant, discharge indoor air outdoors tastedly, the indoor air volume of outdoor air infiltration has inevitably been increased, the indoor load has been increased, and then lead to the waste of the energy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an energy-conserving intelligent fume hood, on the one hand through the return air passageway, make the air in the cavity flow, avoided operation panel department pollutant concentration not up to standard, on the other hand passes through the cooperation of electronic three-way valve and electronic airtight valve, can confirm whether exhaust air or make the air circulate in the cavity according to the pollution condition of air and flow, when the air circulates in the cavity, can alleviate the cavity load, and then practiced thrift the energy.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: an energy-saving intelligent fume hood comprises a body with a cavity, an electric three-way valve, a fresh air channel, an air exhaust channel, an electric airtight valve and a return air channel, wherein the fresh air channel is used for conveying outside fresh air into the cavity, the air exhaust channel is used for conveying air in the cavity out of the body, the electric airtight valve is used for plugging or opening the air exhaust channel, the return air channel is used for allowing air in the cavity to circularly flow in the cavity, an air outlet of the fresh air channel is communicated with one interface of the three-way valve, and the remaining two interfaces of the three-way valve are respectively communicated with an air inlet and an air outlet of the return air channel; and a computer which is used for controlling the conduction of three interfaces of the electric three-way valve and controlling the work of the electric sealed valve is arranged on the body.

Further, the air return channel comprises an air supply pipe and an air return cabin used for receiving air supplied by the air supply pipe, and an air inlet of the air supply pipe and an air outlet of the air return cabin are respectively communicated with the rest two interfaces of the electric three-way valve.

Furthermore, the air outlet of the air supply pipe is a conical air supply outlet, and the caliber of the conical air supply outlet is reduced along the flowing direction of air in the air supply pipe.

Furthermore, a filter and a variable frequency blower are sequentially arranged in the air supply pipe along the flowing direction of the air in the air supply pipe.

Furthermore, the air inlet of the air return cabin is an air suction opening capable of sucking air sent by the air supply pipe, and the air suction opening is opposite to the air outlet of the air supply pipe.

Further, the return air cabin is provided with a strip-shaped return air inlet for allowing the air in the cavity to enter the return air cabin.

Further, a concentration sensor for detecting the air pollution degree in the chamber is arranged in the chamber, and the concentration sensor is in communication connection with the computer.

Further, the passageway of airing exhaust includes the exhaust pipe, electronic airtight valve is located in the exhaust pipe, be equipped with the frequency conversion exhaust fan in the exhaust pipe, electronic airtight valve with the frequency conversion exhaust fan is followed the direction that the air flows in the exhaust pipe is laid in proper order.

Furthermore, a visual sliding window and an air speed sensor for monitoring the air speed on the surface of the visual sliding window are arranged on the body, and the air speed sensor is in communication connection with the computer.

Further, an operation table for experimental operation and an illuminating lamp for providing illumination for the operation table are further arranged in the chamber.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides an energy-conserving intelligent fume hood, on the one hand through the return air passageway, makes the air in the cavity flow, has avoided operation panel department pollutant concentration not up to standard, and on the other hand passes through the cooperation of electronic three-way valve and electronic airtight valve, can confirm whether exhaust air or make the air circulate in the cavity according to the pollution condition of air, when the air circulates in the cavity, can alleviate the cavity load, and then practiced thrift the energy.

Drawings

Fig. 1 is a perspective view of an energy-saving intelligent fume hood provided by an embodiment of the present invention;

fig. 2 is a front view of an energy-saving intelligent fume hood provided by an embodiment of the present invention;

in the reference symbols: 1-body; 2-fresh air pipe; 3-an electric three-way valve; 4-blast pipe; 5-a filter; 6-frequency conversion blower; 7-a conical air supply outlet; 8-a central processing unit; 9-a human-computer interaction panel; 10-a concentration sensor; 11-a lighting lamp; 12-an air suction opening; 13-an operation table; 14-a return air cabin; 15-strip air return; 16-an electrically operated airtight valve; 17-variable frequency exhaust fan; 18-an exhaust duct; 19-a storage cabinet; 20-support rollers; 21-a visual sliding window; 22-a wind speed sensor; 23-fume hood frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides an energy-saving intelligent fume hood, including a body 1 having a cavity, an electric three-way valve 3 for transporting external fresh air to a fresh air channel in the cavity, an air exhaust channel for transporting air in the cavity to the outside of the body 1, an electric airtight valve 16 for plugging or opening the air exhaust channel, and a return air channel for circulating air in the cavity. The air outlet of the fresh air channel is communicated with one interface of the three-way valve, and the remaining two interfaces of the three-way valve are respectively communicated with the air inlet and the air outlet of the return air channel; and a computer which is used for controlling the conduction of three interfaces of the electric three-way valve 3 and controlling the work of the electric closed valve 16 is arranged on the body 1. In this embodiment, the main body 1 is erected by a fume hood frame 23, and has a relatively closed cavity, and there are three channels in the cavity, which are a fresh air channel, a return air channel and an air supply channel, wherein the fresh air channel includes a fresh air pipe 2, which supplies fresh air from the outside into the cavity, so that a part of the fresh air channel is located inside the main body 1, and a part of the fresh air channel is located outside the main body 1, and similarly, the air discharge channel discharges harmful air in the cavity to the outside, so that a part of the fresh air channel is located inside the main body 1, and a part of the fresh air channel is located outside the main body 1, where the discharge mode can be optimized, and the harmful air can be discharged after being processed to prevent air pollution, and the purpose of the return air channel is to form circulating air in the cavity, so that the air in the cavity circulates to prevent the concentration of pollutants at the operation console. It is mentioned here that the air in the chamber can be classified into harmful air and harmless air according to the degree of danger, which are all wastes generated during the experiment, but have harmful and harmless components, if the air is harmful, the air needs to be discharged out of the body 1 through the air exhaust channel, if the air is harmless, the air can be circulated in the chamber through the air return channel and is not discharged, thereby avoiding the external air with a large temperature difference with the temperature in the chamber from entering the chamber, bringing unnecessary load to the chamber and further saving energy. The control logic of the present embodiment is to control the electric three-way valve 3 and the electric airtight valve 16 through a computer, where the computer is a conventional technology, and the control here is also a very conventional technology, and the computer includes a central processing unit 8 and a human-computer interaction panel 9, before the fume hood is arranged, the operation modes of the central processing unit 8 and the human-computer interaction panel 9 are preset, for example, which valve of the electric three-way valve 3 is closed and which valve is turned on is controlled by a button on the human-computer interaction panel 9, and which button is turned on or off is controlled by the electric airtight valve 16, and then an action command is issued by the central processing unit 8, and for example, the connections between the central processing unit 8 and the electric three-way valve 3 and between the central processing unit 8 and the electric airtight valve 16 can be both electrically connected and can be wirelessly connected and wait, which are very conventional technologies, and will not be described in detail herein. The specific flow paths controlled by the computer can be divided into the following two types: firstly, when harmful air exists in the cavity, the interface communicated with the fresh air pipe 2 is communicated, the interface communicated with the blast pipe 4 is communicated, the interface communicated with the return air cabin 14 is closed, fresh air is filled into the cavity, then the electric sealing valve 16 is opened, the harmful air in the cavity can be discharged out of the body 1, secondly, when harmless air exists in the cavity, the interface communicated with the fresh air pipe 2 is closed, the interface communicated with the blast pipe 4 is communicated, the interface communicated with the return air cabin 14 is communicated, the electric sealing valve 16 is also kept closed, the harmless air can only circularly flow in the blast pipe 4 and the return air cabin 14, and in the second mode, the interface communicated with the fresh air pipe 2 can be communicated actually, the fresh air can be filled into the cavity, but the harmless air in the cavity needs to be prevented from leaking from the position, it is therefore preferable to shut down the interface.

The following are specific examples:

in order to optimize the above scheme, please refer to fig. 1 and fig. 2, the return air channel includes a blast pipe 4 and a return air compartment 14 for receiving air sent from the blast pipe 4, and an air inlet of the blast pipe 4 and an air outlet of the return air compartment 14 are respectively communicated with the remaining two ports of the electric three-way valve 3. In this embodiment, the return air channel is subdivided into two parts, one part is the blast pipe 4, the other part is the return air compartment 14, the fresh air pipe 2 and the blast pipe 4 are communicated through two of the ports of the electric three-way valve 3, and the blast pipe 4 and the return air compartment 14 are communicated through the other two ports of the electric three-way valve 3.

In order to further optimize the above scheme, referring to fig. 1 and fig. 2, the air outlet of the air supply pipe 4 is a tapered air supply outlet 7, and the aperture of the tapered air supply outlet 7 is reduced along the air flowing direction in the air supply pipe 4. In this embodiment, the tapered air outlet 7 is provided to accelerate the flow velocity of the air, so that the air forms an air curtain when the air is ejected out of the air delivery pipe 4, thereby preventing the air in the chamber from being emitted out of the chamber and reducing the exposure of the operator to pollutants. Preferably, two rows of conical air delivery openings 7 are provided to form a better air curtain.

As an optimized scheme of the embodiment of the present invention, please refer to fig. 1 and 2, a filter 5 and a frequency conversion blower 6 are sequentially installed in the air supply pipe 4 along the direction of the air flowing in the air supply pipe 4. In this embodiment, by providing the filter 5, the contaminants in the outdoor intake air can be filtered to prevent the intake air from being brought into the room. The variable frequency blower 6 can accelerate the air flow speed.

As an optimized scheme of the embodiment of the present invention, please refer to fig. 1 and fig. 2, the air inlet of the air return cabin 14 is an air suction opening 12 capable of sucking the air sent from the air supply pipe 4, and the air suction opening 12 is opposite to the air outlet of the air supply pipe 4. In this embodiment, the air inlet pipe is L-shaped, so the air inlet 12 is disposed right below the conical air outlet 7 to induce the air flow to form a stable air flow structure, thereby enhancing the isolation of the pollutants in the chamber from the people.

As an optimization scheme of the embodiment of the present invention, please refer to fig. 1 and fig. 2, the air return cabin 14 has a strip-shaped air return opening 15 for the air in the chamber to enter the air return cabin 14. In the present embodiment, the strip-shaped air return opening 15 is provided to allow the contaminants in the chamber to flow into the air return compartment 14 with the airflow by the suction force of the variable frequency blower 6 and to be discharged out of the main body 1 through the exhaust duct 18.

As an optimization scheme of the embodiment of the present invention, please refer to fig. 1 and fig. 2, a concentration sensor 10 for detecting an air pollution degree in the chamber is disposed in the chamber, and the concentration sensor 10 is in communication connection with the computer. In this embodiment, after the experiment operation is completed, the person clicks the end button through the human-computer interaction panel 9, so that the fume hood automatically enters the delayed closing procedure. In most experiments, when the experimental test is finished, the concentration of pollutants in the cavity of the fume hood is generally at a higher level, and at the moment, if the system is stopped, the pollutants are diffused to the cavity, so that the quality of air in the cavity is adversely affected. To this end, a concentration sensor 10 is disposed at the top of the fume hood for monitoring the concentration level of the pollutants in the chamber, so that the concentration of the pollutants in the chamber is kept in an operating state when the concentration of the pollutants in the chamber reaches a set value, and the automatic control system closes each control device (i.e. the electric three-way valve 3, the electric airtight valve 16 and the two motors) until the concentration of the pollutants in the chamber reaches a requirement, so that the whole system is in a closed state.

As an optimization scheme of the embodiment of the utility model, please refer to fig. 1 and fig. 2, the passageway of airing exhaust includes exhaust pipe 18, electronic airtight valve 16 is located in exhaust pipe 18, be equipped with frequency conversion exhaust fan 17 in the exhaust pipe 18, electronic airtight valve 16 with frequency conversion exhaust fan 17 follows the direction that air flows in the exhaust pipe 18 is laid in proper order. In this embodiment, the variable frequency exhaust fan 17 is provided to accelerate the exhaust of the air in the chamber.

As an optimization scheme of the embodiment of the utility model, please refer to fig. 1 and fig. 2, be equipped with visual austral window, sliding sash 21 and be used for monitoring the air velocity transducer 22 of the wind speed on the visual austral window, sliding sash 21 face on the body 1, air velocity transducer 22 with computer communication is connected. In this embodiment, the visual sliding window 21 is provided to facilitate the observation of the inside of the fume hood by an operator, and the wind speed sensor 22 is provided to measure the flowing speed of the air in the chamber and display the flowing speed on the man-machine exchange panel, when the wind speed is lower than a set value, the central processing unit 8 sends an instruction to control the variable frequency exhaust fan 17 to increase the wind volume, so that the wind speed reaches the set value.

As an optimization scheme of the embodiment of the present invention, please refer to fig. 1 and fig. 2, an operation console 13 for experimental operation and an illuminating lamp 11 for providing illumination for the operation console 13 are further disposed in the chamber. In this embodiment, the console 13 may be used for the operator to perform the experiment operation, and the illumination lamp 11 may provide illumination.

Referring to fig. 1 and 2, as an optimized solution of the embodiment of the present invention, a storage cabinet 19 for storing articles is further disposed in the chamber. In this embodiment, the storage cabinet 19 is provided to store some common articles.

As an optimized solution of the embodiment of the present invention, please refer to fig. 1 and fig. 2, a support roller 20 is disposed below the fume hood frame 23. In this embodiment, the rollers are provided to facilitate movement of the frame. Preferably, the roller is provided with a locking member to prevent it from sliding freely.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An energy-conserving intelligent fume hood, includes the body that has the cavity, its characterized in that: the air conditioner further comprises an electric three-way valve, a fresh air channel for conveying outside fresh air into the cavity, an air exhaust channel for conveying air in the cavity out of the body, an electric airtight valve for plugging or opening the air exhaust channel, and an air return channel for circulating air in the cavity, wherein an air outlet of the fresh air channel is communicated with one interface of the three-way valve, and the remaining two interfaces of the three-way valve are respectively communicated with an air inlet and an air outlet of the air return channel; and a computer which is used for controlling the conduction of three interfaces of the electric three-way valve and controlling the work of the electric sealed valve is arranged on the body.

2. The energy-saving intelligent fume hood as claimed in claim 1, wherein: the air return channel comprises an air supply pipe and an air return cabin used for receiving air supplied by the air supply pipe, and an air inlet of the air supply pipe and an air outlet of the air return cabin are respectively communicated with the rest two interfaces of the electric three-way valve.

3. An energy-saving intelligent fume hood as claimed in claim 2, wherein: the air outlet of the air supply pipe is a conical air supply outlet, and the caliber of the conical air supply outlet is reduced along the flowing direction of air in the air supply pipe.

4. An energy-saving intelligent fume hood as claimed in claim 2, wherein: and a filter and a variable frequency blower are sequentially arranged in the air supply pipe along the flowing direction of the air in the air supply pipe.

5. An energy-saving intelligent fume hood as claimed in claim 2, wherein: the air inlet of the air return cabin is an air suction opening capable of sucking air sent by the air supply pipe, and the air suction opening is opposite to the air outlet of the air supply pipe.

6. An energy-saving intelligent fume hood as claimed in claim 2, wherein: the air return cabin is provided with a strip-shaped air return opening for allowing air in the cavity to enter the air return cabin.

7. The energy-saving intelligent fume hood as claimed in claim 1, wherein: and a concentration sensor for detecting the air pollution degree in the chamber is arranged in the chamber, and the concentration sensor is in communication connection with the computer.

8. The energy-saving intelligent fume hood as claimed in claim 1, wherein: the passageway of airing exhaust includes the exhaust pipe, electronic airtight valve is located in the exhaust pipe, be equipped with the frequency conversion exhaust fan in the exhaust pipe, electronic airtight valve with the frequency conversion exhaust fan is followed the direction that the air flows in the exhaust pipe is laid in proper order.

9. The energy-saving intelligent fume hood as claimed in claim 1, wherein: the wind speed sensor is in communication connection with the computer.

10. The energy-saving intelligent fume hood as claimed in claim 1, wherein: the chamber is also provided with an operation table for experimental operation and an illuminating lamp for providing illumination for the operation table.