A make-up air type fume hood

Abstract

The utility model provides a kind of air supply type fume hood, comprising: cabinet, install on installation datum;Air supply component, air supply component is arranged at the bottom of cabinet, air supply component is used to supplement gas to maintain indoor pressure balance, while, suck the experimental gas remaining on ground;Air outlet component, air outlet component is arranged on cabinet, and the air outlet end of air outlet component is located at the top of cabinet, air supply component is communicated with air outlet component, air outlet component is used to discharge the gas generated by experiment, by designing air supply component at the bottom of cabinet, it is convenient to supplement gas to maintain indoor pressure balance, while, suck the experimental gas remaining on ground to solve the problem that some organic gas with greater specific gravity is usually generated in laboratory, long-term accumulation in ground portion cannot be effectively excluded.

Description

Technical Field

[0001] This utility model relates to the field of fume hood technology, specifically to a make-up air fume hood. Background Technology

[0002] Currently, there are two types of fume hoods used in laboratories: the traditional single-exhaust type, which typically has a maximum exhaust volume of 1500 m³ / h or 1800 m³ / h, and the traditional make-up air type, which has an air inlet and an exhaust outlet at the top. Both inlets require connection to an external fan to achieve air exchange, thus indirectly reducing the exhaust volume. The first type, the traditional single-exhaust type, has a simpler structure and is therefore less expensive, making it the most commonly used type in laboratories. However, laboratories often generate some heavy organic gases that accumulate on the floor and cannot be effectively removed. The two types of fume hoods mentioned above alone cannot effectively solve the problem of long-term organic gas accumulation on the floor.

[0003] Therefore, existing technologies need further development. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a make-up air type fume hood to solve the technical problem in related technologies that some organic gases with a high specific gravity are usually generated in laboratories and accumulate on the ground and cannot be effectively removed.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a make-up air type fume hood is provided, comprising: a cabinet body, installed on an installation reference; a make-up air component, which is disposed at the bottom of the cabinet body, and is used to supplement gas to maintain indoor pressure balance while absorbing residual experimental gas on the ground; and an exhaust air component, which is disposed on the cabinet body, with the exhaust end of the exhaust air component located at the top of the cabinet body, the make-up air component and the exhaust air component being connected, and the exhaust air component being used to discharge the gas generated in the experiment.

[0006] Furthermore, the air supply assembly includes: a kickboard with multiple air supply ports spaced apart along the width of the cabinet and penetrating the kickboard; and a lower air chamber located on one side of the kickboard, which is connected to both the air supply ports and the air outlet of the air supply assembly. When residual experimental gas on the ground enters the lower air chamber through the air supply ports, the lower air chamber performs preliminary flow equalization treatment on the incoming gas.

[0007] Furthermore, the air supply assembly also includes: an air inlet duct that extends along a first preset trajectory within the cabinet, with one end of the air inlet duct connected to the lower air cavity; and an air supply fan, with the air inlet end of the air supply fan connected to the end of the air inlet duct away from the lower air cavity, and the air outlet end of the air supply fan connected to the air outlet end of the air outlet assembly.

[0008] Furthermore, the cabinet is equipped with an experimental space and an observation port connected to the experimental space. An experimental table is set up in the experimental space. The air outlet component includes: an air outlet duct that extends along a second preset trajectory inside the cabinet, with one end of the air outlet duct connected to the air outlet end of the make-up air component; an upper air chamber with the air inlet end connected to the air outlet of the air outlet duct; and ventilation openings on the experimental table that are connected to the air outlet end of the upper air chamber and the air outlet end of the air outlet component, respectively.

[0009] Furthermore, the air outlet assembly also includes a supplementary air wing, which is located at the air outlet end of the upper air cavity. The supplementary air wing is used to form an air curtain from the airflow coming out of the upper air cavity and deliver it into the experimental space.

[0010] Furthermore, the air outlet assembly also includes a guide vane, which is installed in the experimental space and extends along a third preset trajectory. The guide vane is used to guide the airflow and air curtain toward the air outlet end of the air outlet assembly.

[0011] Furthermore, the air outlet assembly also includes an air outlet fan, which is located at the top of the cabinet, and the air outlet of the air outlet fan forms the air outlet end of the air outlet assembly.

[0012] Furthermore, the fume hood also includes an observation door, which is movably installed at the observation opening along the height of the hood.

[0013] Beneficial effects:

[0014] 1. By designing a gas supply component at the bottom of the cabinet, it is easy to replenish gas to maintain indoor pressure balance, while also absorbing residual experimental gases on the ground to solve the problem that some heavy organic gases are usually generated in the laboratory and accumulate on the ground for a long time without being effectively removed.

[0015] 2. Through the design of the make-up air fan, the heavier gases are drawn in from the ground and then discharged from the laboratory.

[0016] 3. Through the design of the air supply wing, the airflow is directed at a certain angle to form an air curtain and sent into the cabinet. Under the combined action of the air curtain and the exhaust air, the pollutants inside the cabinet are guided to the air outlet of the air outlet component, thereby further expelling the pollutants. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a make-up air type fume hood used in an embodiment of this utility model.

[0018] The above figures include the following reference numerals:

[0019] 1. Kickboard; 2. Lower air chamber; 3. Air inlet duct; 4. Make-up air fan; 5. Air outlet duct; 6. Upper air chamber; 7. Make-up air wing; 8. Deflector plate; 9. Observation door; 10. Air outlet fan; 11. Cabinet; 12. Experimental space. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] According to an embodiment of this utility model, a make-up air type fume hood is provided. Please refer to [link / reference]. Figure 1 ,include:

[0022] A make-up air type fume hood includes: a cabinet body 11, mounted on an installation reference; a make-up air assembly, which is located at the bottom of the cabinet body 11 and is used to replenish gas to maintain indoor pressure balance while absorbing residual experimental gas on the ground; and an exhaust air assembly, which is located on the cabinet body 11 and has its exhaust end located at the top of the cabinet body 11. The make-up air assembly and the exhaust air assembly are connected, and the exhaust air assembly is used to discharge the gas generated in the experiment.

[0023] By adopting the above technical solution, by designing a gas supply component at the bottom of the cabinet 11, it is convenient to replenish gas to maintain indoor pressure balance, while absorbing residual experimental gas on the ground to solve the problem that some organic gases with a large specific gravity are usually generated in the laboratory and accumulate on the ground for a long time and cannot be effectively removed.

[0024] Please refer to Figure 1 The air supply assembly includes: a kick plate 1, on which multiple air supply ports are provided, spaced apart along the width of the cabinet 11, and all of the multiple air supply ports penetrate the kick plate 1; a lower air chamber 2, which is located on one side of the kick plate 1, and is connected to both the air supply ports and the air outlet of the air supply assembly; wherein, when the experimental gas remaining on the ground enters the lower air chamber 2 through the air supply ports, the lower air chamber 2 performs preliminary flow equalization treatment on the incoming gas.

[0025] By adopting the above technical solution and through the design of the lower air chamber 2, it is convenient for the experimental gas remaining on the ground to enter the lower air chamber 2 through the air supply port, and the lower air chamber 2 performs preliminary flow equalization treatment on the gas entering.

[0026] Please refer to Figure 1 The air supply assembly also includes: an air inlet pipe 3, which extends along a first preset trajectory inside the cabinet 11, with one end of the air inlet pipe 3 connected to the lower air chamber 2; and an air supply fan 4, whose air inlet end is connected to the end of the air inlet pipe 3 away from the lower air chamber 2, and whose air outlet end is connected to the air outlet end of the air outlet assembly.

[0027] By adopting the above technical solution and through the design of the make-up air fan 4, the gas with a higher specific gravity is extracted from the ground and then discharged from the laboratory by the make-up air fan 4.

[0028] Please refer to Figure 1 The cabinet 11 is equipped with an experimental space 12 and an observation port connected to the experimental space 12. An experimental table is set inside the experimental space 12. The air outlet component includes: an air outlet duct 5, which extends along a second preset trajectory inside the cabinet 11, and one end of the air outlet duct 5 is connected to the air outlet end of the air supply component; an upper air chamber 6, the air inlet end of the upper air chamber 6 is connected to the air outlet of the air outlet duct 5, and a ventilation opening is provided on the experimental table, which is connected to the air outlet end of the upper air chamber 6 and the air outlet end of the air outlet component respectively.

[0029] By adopting the above technical solution and through the design of the ventilation opening and air outlet, during the experimental operation, not only can the gas with a higher ground density be discharged through the four make-up air fans, but the gas generated during the experimental operation can also be absorbed simultaneously, achieving multiple uses with one machine and completing the rational allocation of resources.

[0030] Please refer to Figure 1 The air outlet assembly also includes a supplementary air wing 7, which is located at the air outlet end of the upper air cavity 6. The supplementary air wing 7 is used to form an air curtain from the airflow coming out of the upper air cavity 6 and send it into the experimental space 12.

[0031] By adopting the above technical solution, through the design of the supplementary air wing 7, the airflow is directed at a certain angle to form an air curtain and sent into the cabinet 11. Under the combined action of the air curtain and the exhaust air, the pollutants in the cabinet 11 are guided to the air outlet of the air outlet component, thereby further discharging the pollutants.

[0032] Please refer to Figure 1 The air outlet assembly also includes a guide plate 8, which is installed in the experimental space 12. The guide plate 8 extends along a third preset trajectory and is used to guide the airflow and air curtain to the air outlet end of the air outlet assembly.

[0033] By adopting the above technical solution and through the design of the guide plate 8, it is easy to guide the direction of the air curtain and exhaust air, thereby further discharging pollutants.

[0034] Please refer to Figure 1The air outlet assembly also includes an air outlet fan 10, which is located on the top of the cabinet 11, and the air outlet of the air outlet fan 10 forms the air outlet end of the air outlet assembly.

[0035] By adopting the above technical solution and through the design of the exhaust fan 10, pollutants brought by the air curtain and exhaust can be quickly discharged.

[0036] Please refer to Figure 1 The fume hood also includes an observation door 9, which is movably installed at the observation opening along the height direction of the cabinet body 11.

[0037] By adopting the above technical solution and through the design of the observation door 9, it is easy to seal the experimental space during the experiment and prevent the gas generated during the experiment from overflowing.

[0038] Working principle:

[0039] When ventilation is required in the laboratory, the make-up air fan 4 is turned on first. The make-up air fan 4 draws the heavier gas from the laboratory floor into the air inlet duct 3 through the make-up air inlet on the kick plate 1, and then discharges it through the air outlet into the upper air chamber 6. The airflow from the upper air chamber 6 is then sent into the experimental space 12 through the make-up air wing 7 to form an air curtain. The pollutants in the cabinet 11 are guided to the air outlet of the air outlet component under the combined action of the air curtain and the exhaust air, thereby further discharging the pollutants.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0041] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0042] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0043] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0044] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A make-up air type fume hood, characterized in that, include: The cabinet (11) is installed on the mounting base; The air supply component is located at the bottom of the cabinet (11). The air supply component is used to supply gas to maintain indoor pressure balance while absorbing residual experimental gas on the ground. An air outlet assembly is disposed on the cabinet (11), with the air outlet end of the air outlet assembly located at the top of the cabinet (11). A makeup air assembly is connected to the air outlet assembly, and the air outlet assembly is used to exhaust the gas generated during the experiment. The makeup air assembly includes: The kickboard (1) is provided with multiple air inlets, which are spaced apart along the width of the cabinet (11) and all of them penetrate the kickboard (1). The lower air chamber (2) is located on one side of the kick plate (1) and is connected to the air supply port and the air outlet of the air outlet assembly respectively. When the experimental gas remaining on the ground enters the lower air chamber (2) through the air inlet, the lower air chamber (2) performs preliminary flow equalization treatment on the gas entering; The air supply component also includes: An air inlet pipe (3) extends along a first preset trajectory inside the cabinet (11), and one end of the air inlet pipe (3) is connected to the lower air chamber (2); The air supply fan (4) has an air inlet end connected to the end of the air inlet pipe (3) away from the lower air chamber (2), and an air outlet end connected to the air outlet end of the air outlet assembly. The cabinet (11) is provided with an experimental space (12) and an observation port communicating with the experimental space (12). An experimental table is provided in the experimental space (12). The air outlet assembly includes: Air outlet pipe (5), the air outlet pipe (5) extends along a second preset trajectory inside the cabinet (11), and one end of the air outlet pipe (5) is connected to the air outlet end of the air supply component; The upper air chamber (6) has an air inlet connected to the air outlet of the air outlet pipe (5). The experimental platform is provided with a ventilation opening, which is connected to the air outlet of the upper air chamber (6) and the air outlet of the air outlet assembly, respectively. The air outlet assembly also includes: The supplementary air wing (7) is located at the air outlet of the upper air cavity (6). The supplementary air wing (7) is used to form an air curtain from the airflow coming out of the upper air cavity (6) and send it into the experimental space (12). The air outlet assembly also includes a guide plate (8), which is installed in the experimental space (12). The guide plate (8) extends along a third preset trajectory and is used to guide the airflow and air curtain to the air outlet end of the air outlet assembly.

2. The make-up air type fume hood according to claim 1, characterized in that, The air outlet assembly further includes an air outlet fan (10), which is disposed on the top of the cabinet (11), and the air outlet of the air outlet fan (10) forms the air outlet end of the air outlet assembly.

3. The make-up air type fume hood according to claim 1, characterized in that, The fume hood also includes an observation door (9), which is movably disposed at the observation port along the height direction of the cabinet body (11).

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