CN220554844U

CN220554844U - Fume hood special for constant temperature and humidity laboratory

Info

Publication number: CN220554844U
Application number: CN202320986789.7U
Authority: CN
Inventors: 勾小程
Original assignee: Xi'an Aikemei Laboratory System Engineering Group Co ltd
Current assignee: Xi'an Aikemei Laboratory System Engineering Group Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2024-03-05
Anticipated expiration: 2033-04-27

Abstract

The utility model discloses a special fume hood for a constant temperature and humidity laboratory, which comprises a fume hood main body and a wind distributing box, wherein a door body is arranged on the front surface of the fume hood main body, the top of the fume hood main body is fixedly connected with a gas collecting hood, the middle position of the top of the gas collecting hood is communicated with an exhaust pipe, the top of the gas collecting hood is fixedly connected with an exhaust fan matched with the exhaust pipe, the wind distributing box is positioned above the fume hood main body, and the top of the wind distributing box is fixedly connected with a blast pipe. The utility model has the advantages of being capable of supplying air into the fume hood, keeping the air discharge quantity consistent with the air supply quantity, leading the air discharge quantity to enter the lower part of the fume hood from the side wall cavity of the fume hood through the air distribution box outlet branch pipe, increasing the uniformity of air intake in the fume hood, simultaneously keeping the air quantity of the exhaust fan and the air blower uniform, not discharging the indoor air quantity, ensuring the temperature and humidity of a laboratory, reducing the energy loss to the maximum extent, improving the temperature and humidity precision and reducing the operation cost.

Description

Fume hood special for constant temperature and humidity laboratory

Technical Field

The utility model relates to the technical field of experimental equipment, in particular to a fume hood special for a constant temperature and humidity laboratory.

Background

Fume hoods are large equipment in laboratories, particularly chemical laboratories, and are used to reduce contact between experimenters and harmful gases, and to completely isolate them from each other by using glove boxes. Fume hoods are the primary barrier to protect personnel from toxic chemical fumes. The device can be used as important safety backup equipment, and can effectively discharge harmful gas when chemical smog, dust and toxic gas are generated like failure in a chemical experiment process, so that workers and laboratory environment are protected.

At present, the existing fume hoods are of full-exhaust type and air-supplementing type, the air supplementing quantity of the air-supplementing type fume hoods is about 70% of the air exhausting quantity, and the two fume hoods in a laboratory with constant temperature and humidity requirements can exhaust air in the room, so that the indoor temperature and humidity cannot be guaranteed, and the energy consumption of an air conditioner is increased.

In order to ensure the stability of the environment in a constant temperature and humidity laboratory, the special fume hood for the constant temperature and humidity laboratory is provided, the fume hood body is of a cuboid structure, the top of the fume hood is provided with a gas collecting hood, then an exhaust fan is connected, a gas supplementing system is connected to a gas distributing box through a blower at the top, a gas distributing box is connected with a branch pipe to enter the lower part of the fume hood through a side wall cavity of the fume hood, the air volumes of the exhaust fan and the blower are uniform, the indoor air volumes are not discharged, the temperature and humidity of the laboratory are ensured, the laboratory with good heat preservation tightness can furthest reduce energy dissipation, improve the temperature and humidity precision and reduce the running cost.

Disclosure of Invention

The utility model aims to provide a special fume hood for a constant temperature and humidity laboratory, which has the advantages of reducing energy loss to the maximum extent, improving temperature and humidity precision and reducing operation cost, and solves the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a special fume hood in constant temperature and humidity laboratory, includes fume hood main part and branch bellows, the front of fume hood main part is provided with the door body, the top fixedly connected with gas collecting channel of fume hood main part, the intermediate position intercommunication at gas collecting channel top has the exhaust duct, the top fixedly connected with of gas collecting channel and the exhaust fan of exhaust duct looks adaptation, the branch bellows is located the top of fume hood main part, the top fixedly connected with blast pipe of branch bellows, the outside of blast pipe is provided with air volume detector one, the equal fixedly connected with intake pipe in both sides of blast pipe, the outside of exhaust duct is provided with air volume detector two, the equal fixedly connected with curb plate in left and right sides of fume hood main part, and the one side that the curb plate is in opposite directions extends to the inner chamber of fume hood main part, the equal fixedly connected with air inlet in one side that the curb plate is in opposite directions, the intake pipe runs through the curb plate and uses with the air inlet cooperation.

Preferably, the air distribution box comprises a top plate, a box body, through grooves and connecting holes, wherein the top plate is positioned at the top of the box body and is fixedly connected with the box body, the through grooves are formed in the middle position of the top plate and are communicated with the air supply pipe, the connecting holes are respectively formed in the left side and the right side of the box body, and the connecting holes are symmetrically arranged.

Preferably, the inner cavity of the box body is fixedly connected with filter screens which are symmetrically distributed, and the filter screens are respectively positioned at two sides of the through groove.

Preferably, the number of the air inlet pipes is the same as the number of the connecting holes, and the top ends of the air inlet pipes are respectively communicated with the connecting holes.

Preferably, a cavity is formed in the side plate, and the bottom end of the air inlet pipe extends to the cavity of the side plate and is communicated with the air inlet.

Preferably, the first air volume detector and the second air volume detector are internally provided with air volume and air speed sensors, and the air volume and air speed sensors are of any type selected from YQGF652 and YQF 3088.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model has the advantages that the air can be supplied to the fume hood through the matching use of the air collecting hood, the exhaust pipe, the exhaust fan, the air supply pipe, the air distribution box, the first air volume detector, the air inlet pipe, the second air volume detector and the side plates, and the exhaust air volume and the air supply volume are kept consistent, the uniformity of the air inlet in the fume hood is increased through the air distribution box connecting branch pipe entering the lower part of the fume hood from the side wall cavity of the fume hood, the air volume of the exhaust fan and the air supply machine is kept equal, the air volume in the room is not discharged, the temperature and the humidity of a laboratory are ensured, the energy loss can be reduced to the greatest extent, the temperature and humidity precision is improved, the operation cost is reduced, the air supplementing quantity of the conventional fume hood is about 70% of the air exhausting quantity, and the air in the room can be exhausted in a laboratory with constant temperature and humidity requirements, and the temperature and the humidity in the room can not be ensured, and the energy consumption of the air conditioner is increased.

Drawings

FIG. 1 is a schematic perspective view of the structure of the present utility model;

FIG. 2 is a partial cross-sectional view of the structure of the present utility model;

FIG. 3 is a schematic diagram showing the split structure of the air distributing box;

fig. 4 is a schematic top view of the filter screen of the present utility model.

In the figure: 1. a fume hood body; 2. a door body; 3. a gas collecting hood; 4. an exhaust pipe; 5. an exhaust fan; 6. an air supply pipe; 7. a wind distributing box; 701. a top plate; 702. a case; 703. a through groove; 704. a connection hole; 8. an air quantity detector I; 9. an air inlet pipe; 10. an air quantity detector II; 11. a side plate; 12. an air inlet; 13. and (3) a filter screen.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a special fume hood in constant temperature and humidity laboratory, including fume hood main part 1 and branch bellows 7, the front of fume hood main part 1 is provided with door body 2, the top fixedly connected with gas collecting hood 3 of fume hood main part 1, the intermediate position intercommunication at gas collecting hood 3 top has exhaust duct 4, the top fixedly connected with of gas collecting hood 3 and the exhaust fan 5 of exhaust duct 4 looks adaptation, branch bellows 7 is located the top of fume hood main part 1, the top fixedly connected with blast pipe 6 of branch bellows 7, the outside of blast pipe 6 is provided with air volume detector one 8, the equal fixedly connected with intake pipe 9 of both sides of blast pipe 6, the outside of exhaust duct 4 is provided with air volume detector two 10, the equal fixedly connected with curb plate 11 in both sides of fume hood main part 1, and the one side that curb plate 11 is in opposite extends to the inner chamber of fume hood main part 1, one side that curb plate 11 is in opposite is all fixedly connected with air inlet 12, intake pipe 9 runs through curb plate 11 and uses with the cooperation of air inlet 12, air volume detector one 8 and air volume detector two 10 embeds air volume sensor, and one in YQF 30652 or one arbitrary model of air volume sensor is adopted to use.

In the utility model, the following components are added: the air distribution box 7 comprises a top plate 701, a box body 702, a through groove 703 and a connecting hole 704, wherein the top plate 701 is positioned at the top of the box body 702 and is fixedly connected with the box body 702, the through groove 703 is formed in the middle position of the top plate 701, the through groove 703 is communicated with the air supply pipe 6, the connecting hole 704 is formed in the left side and the right side of the box body 702 respectively, the connecting hole 704 is symmetrically arranged, and the air distribution box 7 is convenient to clean and maintain by arranging the top plate 701, the box body 702, the through groove 703 and the connecting hole 704, and meanwhile air is supplied to a plurality of air inlet pipes 9 respectively.

In the utility model, the following components are added: the inner chamber fixedly connected with of box 702 is symmetric distribution's filter screen 13, and filter screen 13 is located the both sides of logical groove 703 respectively, through setting up filter screen 13, dust and impurity that carry when can getting rid of the air supply guarantee to let in the air quality of fume hood and accord with the experimental requirement.

In the utility model, the following components are added: the number of the air inlet pipes 9 is the same as that of the connecting holes 704, and the top ends of the air inlet pipes 9 are respectively communicated with the connecting holes 704, so that the blower can blow air to the inner cavity of the air distribution box 7 through the air blowing pipe 6.

In the utility model, the following components are added: the inside of curb plate 11 is provided with the cavity, and the bottom of intake pipe 9 extends to the cavity of curb plate 11 and is linked together with air inlet 12, is favorable to the air in the intake pipe 9 to pass through air inlet 12 and discharges, can increase the homogeneity of the inside intake of fume hood simultaneously.

Working principle: when the utility model is used, a user starts the laboratory air supplementing system, controls the blower to blow air to the air supply pipe 6, air flow enters the inner cavity of the air distribution box 7 along with the air supply pipe 6, dust and other impurities in the air flow are filtered by the filter screen 13, clean air flow respectively enters the air inlet pipe 9 through the connecting holes 704, under the guiding action of the air inlet pipe 9, the air flow gradually flows to the air inlet 12 along the air inlet pipe 9, finally enters the lower part of the inner cavity of the fume hood through the air inlet 12, the exhaust fan 5 is started to enable air in the fume hood main body 1 to flow to the air collecting hood 3, then the air is exhausted through the exhaust pipe 4, the first air volume detector 8 and the second air volume detector 10 work simultaneously to detect the air supply volume and the air exhaust volume, the air supply volume and the air exhaust volume are convenient to be controlled to be uniform, the air volume in the laboratory is not exhausted, and the temperature and humidity in the laboratory are ensured.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

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

Claims

1. The utility model provides a special fume hood in constant temperature and humidity laboratory, includes fume hood main part (1) and divide bellows (7), its characterized in that: the front of fume hood main part (1) is provided with a door body (2), the top fixedly connected with gas collecting channel (3) of fume hood main part (1), the intermediate position intercommunication at gas collecting channel (3) top has exhaust pipe (4), the top fixedly connected with of gas collecting channel (3) with exhaust fan (5) of exhaust pipe (4) looks adaptation, branch bellows (7) are located the top of fume hood main part (1), the top fixedly connected with blast pipe (6) of branch bellows (7), the outside of blast pipe (6) is provided with air quantity detector one (8), the utility model discloses a ventilation hood, including ventilation pipe (6), air inlet pipe (9), exhaust pipe (4), air volume detector two (10), the equal fixedly connected with curb plate (11) in left and right sides of fume hood main part (1), and the inner chamber that one side in opposite directions of curb plate (11) extends to fume hood main part (1), the equal fixedly connected with air inlet (12) in one side in opposite directions of curb plate (11), air inlet pipe (9) run through curb plate (11) and use with air inlet (12) cooperation.

2. A constant temperature and humidity laboratory specific fume hood according to claim 1 wherein: the air distribution box (7) comprises a top plate (701), a box body (702), through grooves (703) and connecting holes (704), wherein the top plate (701) is located at the top of the box body (702) and is fixedly connected with the box body (702), the through grooves (703) are formed in the middle of the top plate (701), the through grooves (703) are communicated with the air supply pipe (6), the connecting holes (704) are formed in the left side and the right side of the box body (702) respectively, and the connecting holes (704) are symmetrically arranged.

3. A constant temperature and humidity laboratory specific fume hood according to claim 2 wherein: the inner cavity of the box body (702) is fixedly connected with filter screens (13) which are symmetrically distributed, and the filter screens (13) are respectively positioned at two sides of the through groove (703).

4. A constant temperature and humidity laboratory specific fume hood according to claim 2 wherein: the number of the air inlet pipes (9) is the same as that of the connecting holes (704), and the top ends of the air inlet pipes (9) are respectively communicated with the connecting holes (704).

5. A constant temperature and humidity laboratory specific fume hood according to claim 1 wherein: the inside of curb plate (11) is provided with the cavity, the bottom of intake pipe (9) extends to the cavity of curb plate (11) and is linked together with air inlet (12).

6. A constant temperature and humidity laboratory specific fume hood according to claim 1 wherein: and the air quantity detector I (8) and the air quantity detector II (10) are internally provided with air quantity and air speed sensors, and the air quantity and air speed sensors are of any type selected from YQGF652 and YQF 3088.