Laboratory table with fume removal function

Abstract

The present invention relates to a laboratory table with a fume removal function, and particularly, has advantages in terms of energy and vibration by presenting a variable hood capable of surrounding a source of fume generation such that fumes can be effectively sucked into a fan unit. In addition, the laboratory table can be free from vibration from the fan unit due to the source of fume generation and the fan unit being connected to each other in close proximity, thereby ensuring the accuracy of an experiment without inconveniencing the experimenter.

Description

Laboratory bench equipped with fume removal function

[0001] The present invention relates to a workbench installed in a laboratory or research room for conducting various chemical experiments, and in particular, to a workbench capable of effectively capturing and removing fumes generated during an experiment and effectively preventing vibrations caused by the operation of a fume removal system.

[0002] Experiment benches are placed in laboratories or research rooms and are used as a workbench when conducting various science and chemistry experiments.

[0003] When conducting experiments on a workbench like this, harmful gases such as foul odors or fumes (hereinafter referred to as fumes) are generated. To address this, a fume hood is installed in the laboratory to vent the fumes to the outside.

[0004] However, during experiments, there are times when the experimenter is unable to use a fume hood due to the experiment schedule or other factors. In other words, the experimenter may perform the experiment on the workbench without using a fume hood. As a result, the experimenter may be exposed to foul odors and harmful gases generated by the experiment.

[0005] To this end, laboratory benches equipped with fume hood functions are being developed recently. Specifically, a fan unit that generates suction force and a duct that guides fumes drawn into the interior by the suction force provided by the fan unit to the outside are provided on the laboratory bench body or on the reagent stand installed on the laboratory bench. As a result, fumes generated during experiments on the laboratory bench can be discharged directly to the outside of the laboratory bench through the fume hood. At this time, a filter for filtering fumes is installed in the fan unit.

[0006] However, conventional workbenches equipped with fume hood functions are connected by a duct with a long distance between the fume source and the fan unit and several right-angle airflows. Since this causes high resistance (differential pressure) in the flow of fumes, high levels of fan performance and power consumption are required for fume capture, and furthermore, there is a problem that it can cause vibration in the workbenches themselves.

[0007] In particular, conventional fume hoods cannot effectively capture fumes generated on the workbench, so a significant amount of fumes spreads into the surroundings before entering the fume hood, contaminating the indoor air and causing odors and harmful gases to be transmitted to the experimenter.

[0008] In summary, conventional workbenches equipped with fume hood functions are not effective in terms of fume collection, energy, and vibration of the workbenches, so actual customers do not use them often.

[0009] The present invention was devised to solve the problems of the aforementioned prior art, and aims to provide a test bench equipped with a fume function that can rapidly and effectively collect and exhaust fume gas by surrounding the area where fumes are generated to prevent fumes from spreading to the surroundings and then generating suction force from one side.

[0010] In addition, another objective of the present invention is to provide a test bench equipped with a fume function that is highly effective in saving energy and preventing vibration during fume hood operation by minimizing the flow resistance of fumes flowing into the fume hood.

[0011] In addition, another objective of the present invention is to provide a workbench that facilitates the replacement of a filter that filters fumes introduced into a fume hood.

[0012] The experimental table equipped with a fume removal function according to the present invention for solving the above-mentioned problem comprises a table providing an experimental space, a variable hood arranged to surround the upper, both sides and the rear of the experimental space so as to seal all four sides except the front of the experimental space, and a duct arranged in the internal space surrounded by the variable hood and having an inlet formed therein for introducing fumes generated in the experimental space.

[0013] Here, the variable hood maintains an unfolded state to surround the other directions of the test hole, excluding the front, during the experiment in which fumes are generated, and can be varied to a folded state when the experiment is completed.

[0014] More specifically, the variable hood comprises left and right side plates installed facing each other with the inlet in between on both sides of the duct section; and a top plate installed on the upper part of the duct section to surround the experimental space together with the left and right side plates.

[0015] Here, the top plate is installed to be slidable back and forth on the upper part of the duct section, and the left and right plates are installed to be rotatable on the sides of the duct section so as to open and close the inlet.

[0016] Alternatively, the top plate may be installed to slide back and forth on the upper part of the duct section, and the left and right plates may be hinged to the sides of the top plate and folded toward the bottom of the top plate so that they can be stored together on one side of the test table.

[0017] In addition, the duct section is composed of an upper duct in which the inlet is formed and which is positioned upright above the table, and a lower duct that extends below the table and is connected in a straight line to the fan unit. As a result, the fumes can be guided downward in a straight line and directed toward the fan unit.

[0018] At this time, the fan unit is installed on the laboratory floor surface below the experiment table, so the experiment table can be free from the vibration of the fan unit.

[0019] Meanwhile, the above-mentioned inlets may be formed as a pair facing each other on one side and the other side of the duct section. In this case, the variable hood is installed on each side of the duct section where each inlet is formed, and the pair of inlets can be individually opened and closed by the left and right plates forming the variable hood.

[0020] In addition, a mounting slit is formed just below the inlet of the duct section, into which a filter unit for filtering fumes introduced through the inlet is detachably installed. As a result, the experimenter can easily replace the filter on the table without bending over.

[0021] Meanwhile, the variable hood of the present invention is provided on one side of the sink at the sink workbench, so that fumes can be effectively removed even during the process of washing experimental tools at the sink.

[0022] The experiment table equipped with the fume removal function of the present invention configured as described above has the advantage that the experiment area where fume gas is generated is completely surrounded by a variable hood, so the fume gas can be rapidly drawn into the duct and exhausted to the outside before spreading to the outside, thereby preventing contamination of the internal space of the laboratory, and in particular, contact with fume gas is completely blocked for experimenters.

[0023] In addition, by reducing the longitudinal resistance between the fume generator and the fan unit and inducing a straight flow, it is possible to reduce power consumption for operating the fan and minimize vibration of the experiment table itself, thereby having the effect of not causing discomfort to the experimenter.

[0024] In addition, the present invention has the advantage of allowing the experimenter to easily replace the filter by having a structure that allows the filter to be inserted and removed through the fume inlet located on the upper part of the experiment table.

[0025] FIGS. 1 and FIGS. 2 illustrate a test bench equipped with a fume removal function according to the present invention.

[0026] FIG. 3 is a figure illustrating an embodiment of a variable hood applied to a test bench equipped with a fume removal function according to the present invention.

[0027] FIG. 4 is a figure illustrating another embodiment of a variable hood applied to a test bench equipped with a fume removal function according to the present invention.

[0028] FIG. 5 is a drawing showing the flow of fumes on a test bench equipped with a fume removal function according to the present invention.

[0029] FIG. 6 is a drawing showing a detachable state of a filter unit of a test bench equipped with a fume removal function according to the present invention.

[0030] FIG. 7 is a figure illustrating an embodiment in which the height of the fume hood is extended on a test bench equipped with a fume removal function according to the present invention.

[0031] FIG. 8 is a drawing illustrating the use of fume hoods on both sides of a test bench equipped with a fume removal function according to the present invention.

[0032] FIG. 9 is a block diagram illustrating the relationship of components for controlling a fan unit in a sink test bench equipped with a fume removal function according to the present invention.

[0033] FIG. 10 is a drawing showing a fume hood applied to a sink workbench equipped with a fume removal function according to the present invention.

[0034] FIGS. 11 to 13 illustrate an embodiment in which a fume removal function according to the present invention is applied to a sink test table.

[0035] Hereinafter, an embodiment of a test bench equipped with a fume removal function according to the present invention will be described in detail with reference to the attached drawings.

[0036] FIGS. 1 and 2 illustrate a test bench equipped with a fume removal function according to the present invention, and FIGS. 2 and 4 illustrate one embodiment and another embodiment of a variable hood according to the present invention. FIG. 5 illustrates the flow of fumes on a test bench equipped with a fume removal function according to the present invention.

[0037] The experimental table equipped with a fume removal function according to the present invention comprises a table (10) on which an experiment is performed, a support member (20) that separates the table (10) from the ground, a duct member (30) that guides fine particles and gas (hereinafter referred to as 'fume') containing fume generated during the experiment, a variable hood (40) that surrounds the area where fume is generated and causes the fume to flow toward the duct member (30), a fan unit (50) that provides suction force to the duct member (30), and a filter unit (60) installed in the duct member (30) to filter the fume.

[0038] The table (10) is positioned at a certain distance upward from the ground, and since the upper surface and the space above it are spaces where an experimenter in front of the experiment table performs various experiments, a large amount of fumes are generated here.

[0039] The above support member (20) supports the table (10) and may be a general table leg, or may include a drawer or various other frames. By means of this support member (20), the table (10) is firmly positioned at a point spaced a certain distance upward from the ground.

[0040] The above duct section (30) is installed upright starting from the table (10) toward the ground to guide fumes generated in the experimental space (R) in a specific direction.

[0041] To explain in more detail, a through hole (not shown) is formed at the end of the table (10) that is far from the experimenter standing in front of the experiment table, and a duct section (30) is inserted and installed vertically with respect to the ground in this through hole, at which time the upper part of the duct section (30) protrudes upward above the table (10), and the remaining part extends vertically downward below the table (10).

[0042] That is, the duct section (30) is composed of an upper duct (31) protruding above the table (10) and a lower duct (32) extending to the lower end of the upper duct (31).

[0043] An inlet (31a) for introducing fumes is formed in the upper duct (31), and this inlet (31a) is open toward the front. Since liquids, paper, ballpoint pens, etc. may be placed on the workbench, it is preferable that the inlet (31a) be formed at a certain height from the table (10) to prevent them from entering the fan unit (50).

[0044] The lower duct (32) is provided at the bottom of the upper duct (31) and stands upright in a straight line toward the ground toward the fan unit (50). That is, the lower duct (32) is made in the form of a straight square pipe or a circular pipe and is made in a flat shape with no bent or curved parts at all so that fume gas can flow smoothly inside.

[0045] This lower duct (32) is connected to a fan unit (50) and receives suction power from the fan unit (50). Therefore, when the fan unit (50) is operated, suction power is generated, and by this suction power, fumes generated in the experimental space (R) above the table (10) are sucked into the upper duct (31) through the inlet (31a) of the upper duct (31), then flow into the lower duct (32) to flow downward in a straight line, and are discharged toward the fan unit (50) through the lower part of the lower duct (32).

[0046] As described above, the duct section (30) adopted in the present invention is installed through the table (10) in a straight vertical shape without bending or twisting, so it has the advantage of not only reducing the length resistance of the duct section (30) but also inducing the fume to flow in a straight line when flowing inside the duct section (30), thereby suppressing the generation of vibration caused by the flow of the fume. Furthermore, it has the advantage of reducing power consumption because a high level of fan performance is not required for collecting the fume.

[0047] And, if the fan unit (50) includes a box (51) that accommodates a fan that rotates by driving a motor, the lower duct (32) is connected to the box (51) of the fan unit (50) to guide fume gas into the box (51), and the fume gas introduced into the box (51) is discharged to the outside through an exhaust hole (51a) formed in the box (51).

[0048] At this time, the lower part of the lower duct (32) is inserted into the box (51) through the upper surface of the box (51). At this time, the lower part of the lower duct (32) is not to come into contact with the bottom of the box (51), and at the same time, it is preferable to form the horizontal cross-sectional area of ​​the box (51) larger than the horizontal cross-sectional area of ​​the lower duct (32).

[0049] For example, if the depth to which the lower duct (32) is inserted into the box (51) does not exceed 1 / 5 of the depth of the box (51) and the horizontal cross-sectional area of ​​the box (51) is made about 5 times larger than the horizontal cross-sectional area of ​​the lower duct (32), then when fumes are sprayed from the lower duct (32) into the box (51), the fumes do not hit the bottom surface of the box (51) strongly but hit it weakly and spread widely in all directions, so the vibration of the fan unit (50) caused by gas flow can be reduced.

[0050] In addition, a vibration damping member may be installed on the bottom surface of the box (51) of the fan unit (50) to absorb vibrations caused by the rotation of the fan unit (50) itself or vibrations caused by gas flow.

[0051] The above variable hood (40) performs a confinement function to prevent fumes generated during the experiment on the table (10) from going outside the experiment table.

[0052] The variable hood (40) for this purpose is structured to surround the inlet (31a) of the duct section (30) and encircle the space in front of the inlet (31a), that is, the experimental space (R) on the table (10). As a result, the experimental space (R) on the table (10) is structured to be closed on all sides except the front, and is connected directly behind the inlet (31a) of the duct section (30) through which the fumes are discharged, so that the fumes do not spread outside the experimental space (R) but are discharged directly to the fan unit (50).

[0053] For example, if an experimenter places an experimental tool (A), such as a flask containing chemicals, in a specific area on the upper surface of a table (10) and conducts an experiment, a large amount of fume gas is discharged out of the flask through the opening of the flask and spread into the internal space of the laboratory. A variable hood (40) is used to surround the flask seating area and the surrounding area corresponding to the experimental space (R) in order to prevent the spread of fume gas and at the same time rapidly exhaust the fume gas.

[0054] Referring to FIGS. 1 and FIGS. 3, the above-described variable hood (40) is composed of a left plate (41) and a right plate (42) provided at a certain distance apart on the upper surface of the table (10), and a top plate (43) provided on the upper part of the left plate (41) and the right plate (42).

[0055] The above-mentioned left plate (41) and right plate (42) are provided facing each other on the upper surface of the table (10), with the inlet (31a) of the duct section (30) and the experimental tool (A) in between. More specifically, the rear end of the left plate (41) and the rear end of the right plate (42) are in close contact with the upper duct (31) of the duct section (30) protruding over the table (10), so that the inlet (31a) is located between the left plate (41) and the right plate (42). And, the front end of the left plate (41) and the right plate (42) extends forward so that the experimental tool (A in FIG. 8) which discharges fumes, similar to the inlet (31a), is located between the left plate (41) and the right plate (42).

[0056] The upper plate (43) has both ends seated on the upper ends of the left and right plates (41, 42), respectively, to form an experimental space (R) with an open front.

[0057] That is, when the place where the experimental tool is placed and the surrounding space are called the experimental space (R), the upper surface of the experimental space (R) is determined by the top plate (43), the lower surface of the experimental space (R) is determined by the table (10), the left and right sides of the experimental space (R) are determined by the left and right side plates (41, 42), and the rear surface of the experimental space (R) is determined by the front of the upper duct (31) of the duct section (30) where the inlet (31a) is formed. At this time, since nothing is installed on the front side of the experimental space (R), when viewed as a whole, the experimental space (R) is formed as a space that is open only on the front side and surrounded in all other directions.

[0058] In this way, when the fan unit (50) operates and suction force is provided to the duct section (30) while the experimental space (R) is surrounded by the variable hood (40) in all directions except the front, the fumes generated in the experimental space (R) can be quickly discharged before they spread to the outside.

[0059] Meanwhile, the top plate (43) of the variable hood (40) may be composed of a single large panel with a fixed area, but it may also be composed of a plurality of unit panels (43a in FIG. 3) stacked in the vertical direction that are slidably connected to adjacent unit panels in the front-rear direction. This configuration, made by combining a plurality of unit panels (43a), allows the length of the top plate (43) to be freely adjusted, thereby enabling the adjustment of the upper surface area of ​​the exposed experimental space (R).

[0060] The variable hood (40) configured as described above can be provided on the test bench in various forms.

[0061] Referring to FIG. 2, a utility box (11) is provided on the upper side of the table (10) of the experiment table, which typically provides a power outlet, gas cock, USB port, LAN port, etc., and an insertion slit (11a) can be formed in the utility box (11) so that the top plate (43) can slide in and out in the horizontal direction through the insertion slit (11a).

[0062] If the laboratory bench does not have a utility box (11) and is instead equipped with a reagent stand for placing reagents used during the experiment, it is possible to form an insertion slit in the reagent stand so that the top plate (43) can slide in and out. Furthermore, although not illustrated, it is also possible to form an insertion slit at the top of the duct section (30) so that it can slide in and out from the top of the duct section (30).

[0063] As shown in FIG. 3, when the top plate (43) is configured to slide in and out independently, the left plate (41) and the right plate (42) are rotatably installed on the duct section (30) or table (10) separately from the top plate (43) to open and close the inlet (31a) formed in the upper duct (31).

[0064] That is, the rear ends of the left plate (41) and the right plate (42) can be hinged to the upper duct (31), or the rear ends of the left plate (41) and the right plate (42) can be pinned to the table (10) and the utility box (11) so that the left plate (41) and the right plate (42) can be configured to rotate like a hinged door in front of the upper duct (31).

[0065] Meanwhile, as illustrated in FIG. 4, when the top plate (43) and the left and right plates (41) (42) are configured to slide together as a single unit, it is also possible to connect the connection portion between the left plate (41) and the top plate (43) and the connection portion between the right plate (42) and the top plate (43) with a hinge (H) so that the left plate (41) and the right plate (42) can be folded toward the bottom surface of the top plate (43). With this configuration, when the top plate (43) is slid into the insertion slit (11a), the left plate (41) and the right plate (42) are also folded and can be slid into the insertion slit (11a) in a state of close contact with the bottom surface of the top plate (43).

[0066] Here, when the left plate (41) and the right plate (42) are folded and attached to the bottom surface of the top plate (43), magnets and iron plates attached thereto may be installed on each to maintain the close contact state.

[0067] Meanwhile, the inlet (31a) formed in the upper duct (31) may be formed only on one side of the upper duct (31) as described so far, but as shown in FIG. 8, it may also be formed as a pair facing each other on one side and the other side of the upper duct (31). The pair of inlets (31a) formed facing each other in the upper duct (31) in this way can be individually opened and closed by the left and right side plates (41, 42) of the variable hood (40) installed on each side of the duct section (30).

[0068] As a result, when test benches are arranged on both sides centered around the duct section (30), the experimenters may conduct experiments on one of the test benches (10), but they may also conduct experiments on the opposite test bench. In this case, if there are inlets (31a) on both sides facing each other of the upper duct (31), the fumes generated during experiments on both tables (10) can be simultaneously discharged to the outside using only one duct section (30), filter unit (60), and fan unit (50).

[0069] If you do not use both test benches and only conduct an experiment on one of them, then you can close the left plate (41) and the right plate (42) of the variable hood (40) provided on the opposite side to block the inlet (31a) on the opposite side, so that the experiment on one side does not affect the opposite side.

[0070] The above fan unit (50) provides suction force to the duct section (30) to cause fumes from the experimental space (R) to flow into the duct section (30) through the inlet (31a) of the duct section (30) and then discharge them to the outside.

[0071] That is, the fan unit (50) is installed on the lower duct (32) side, and as the fan rotates at high speed, the fumes generated in the experimental space (R) are introduced into the duct section (30) and then flow downward to be discharged to the outside.

[0072] As previously described, this fan unit (50) may generate vibrations caused by the rotation of the fan itself as well as vibrations caused by collision with fume gas. These vibrations pass through the duct section (30) and ultimately affect the table (10), thereby causing inconvenience during the experiment.

[0073] Accordingly, in the present invention, the fan unit (50) is installed in a space physically separated from the experiment table. Preferably, by placing it on the laboratory floor (Ground) below the experiment table, vibrations generated by the fan unit (50) are prevented from being transmitted toward the experiment table and are absorbed by the ground.

[0074] Meanwhile, in the present invention, the fan unit (50) can be controlled to operate or stop automatically without the experimenter having to operate the fan unit (50) separately immediately before or after completing the experiment, thereby providing convenience to the experimenter. More specifically, the fan unit (50) can be controlled to operate or stop automatically according to the unfolding or folding operation of the variable hood (40).

[0075] To this end, a variable motion detection means (90), such as a limit switch mechanically connected to a series of contacts, is installed on one side of the variable hood (40). Accordingly, when the experimenter unfolds the variable hood (40) to start an experiment, the closed contact of the switch is released, and the fan unit (50) is controlled to operate automatically. Then, when the experiment is completed and the variable hood (40) is folded, the open contact of the switch is closed, and the fan unit (50) is controlled to stop automatically. This not only provides convenience to the experimenter but also enables an economical experiment without energy waste.

[0076] Meanwhile, a gas detection sensor (S) for detecting fumes may be installed inside the duct section (30).

[0077] The above gas detection sensor (S) is installed in either the upper duct (31) or the lower duct (32) to measure fumes and fume concentrations flowing into the duct section (30). This gas detection sensor (S) is connected wirelessly or via a wire to the fan unit (50), and when the measured fume concentration increases, the control unit (70 in FIG. 9) increases the rotational speed of the fan unit (50), and when the fume concentration decreases, it controls the rotational speed of the fan unit (50) to decrease.

[0078] That is, the control unit (70) sets the fume concentration in specific intervals and sets the rotation speed of the fan unit (50) for each interval, so that when the fume concentration measured by the gas detection sensor (S) falls into a certain interval, the fan unit (50) rotates at the speed corresponding to that interval. Therefore, as the fume concentration increases, the fan unit (50) rotates faster to increase the suction force, thereby reducing the possibility of harmful fume gas leaking to the outside, and allowing for a more active response to changes in fume concentration.

[0079] Although the above description explained that the gas detection sensor (S) is installed inside the duct section (30), the present invention is not limited thereto and may also be installed inside the variable hood (40).

[0080] Meanwhile, a timer (T) capable of communicating wirelessly or wired with a control unit (70) may be installed on the experimental bench of the present invention. The timer (T) counts the time associated with a specific experiment schedule pre-entered into the control unit (70), and the rotational speed of the fan unit (50) can be controlled differently according to the progress time of the experiment.

[0081] For example, the experimenter can conduct the experiment by setting different fan speeds for each stage during the entire experiment time. Specifically, the experimenter can directly input and save the fan speed data set for each stage into the memory setting button, and then, when the experimenter selects and operates the corresponding memory setting button during the actual experiment, the fan speed can be automatically controlled by the control unit (70). At this time, by operating the fan slowly from the experiment preparation stage, which is just before the experiment begins, the fumes generated at the start of the experiment can be effectively exhausted. This has the advantage of providing convenience to the experimenter, enabling an economical experiment without energy waste, and further contributing to the reduction of unnecessary noise.

[0082] The above filter unit (60) is installed below the inlet (31a) to filter fumes from the experimental space (R) that have entered the duct section (30) through the inlet (31a), and is installed in the upper part of the duct section (30) that protrudes above the table (10), that is, the upper duct (31).

[0083] To do this, a mounting slit (31b) is formed in the upper duct (31) protruding above the table (10), and the mounting slit (31b) is formed below the inlet (31a), and the filter unit (60) is installed by pushing it horizontally into the duct section (30) through the mounting slit (31b), thereby filtering the fume gas introduced through the inlet (31a).

[0084] Here, it is stated that the filter unit (60) is installed inside the duct section (30) through the mounting slit (31b) of the upper duct (31) protruding over the table (10). Therefore, since the mounting slit (31b) is also located above the table (10), when it is necessary to replace the filter unit (60), the experimenter can replace the filter unit (60) by simply reaching out with their hand while sitting on the experiment table, without having to crouch down inside the experiment table.

[0085] A filter sampling port (31c) into which a gas detection tube (D) for checking the filter replacement time is inserted may be formed immediately below where the filter unit (50) is mounted in the duct section (30). Accordingly, the experimenter can easily check the filter replacement time by inserting the gas detection tube (D) into the filter sampling port (31c) at regular intervals and measuring the concentration coming out of the filter.

[0086] Meanwhile, the present invention can also be applied to an experiment table equipped with a sink. Referring to FIGS. 10 to 13, a duct section (30) is installed on one side of the washing space of the sink (12) so that fumes generated when washing experiment tools or when disposing of liquid generated during an experiment into the drain can flow directly into the duct section (30) and flow toward the fan unit (50) without spreading outside the sink.

[0087] A dryer (13) capable of drying experimental tools washed in a sink (12) may be installed on the table (10). The dryer (13) may be installed on one side of the table (10) or may be installed as a built-in unit embedded inside the table (10).

[0088] The above-mentioned dryer (13) and duct section (30) are connected by a pipe (first pipe: 14), so that fumes generated from the dryer (13) flow into the duct section (30) through the first pipe (14). Here, one end of the first pipe (14) is connected to a vent hole (not shown) of the dryer (13), and the other end is connected to the side or rear of the duct section (30). As a result, fumes generated from the dryer (13) flow into the duct section (30) and flow toward the fan unit (50) via a filter unit (60 in FIG. 1).

[0089] At this time, the air discharged from the fan unit (50) may not be exhausted directly into or outside the laboratory, but may be exhausted to the outside through the water pipe of the sink (12). To this end, the fan unit (50) and the drain pipe (15) of the sink (12) are connected by a pipe (second pipe: 16). Specifically, one end of the second pipe (16) is connected to the outlet side of the fan unit (50), and the other end is connected to the drain pipe (15) of the sink (12). As a result, a large amount of moisture generated from the dryer (13) can be introduced into the drain pipe (15) through the second pipe (16) and discharged to the outside of the laboratory.

[0090] As such, the present invention can be applied to a laboratory bench equipped with a sink, and in particular, in a laboratory bench equipped with a dryer, fumes generated during the washing process of laboratory tools and fumes generated from the dryer can be removed together through a single fume hood (filter unit). Additionally, humid air generated from the dryer can be discharged outside the laboratory through the drain pipe of the sink.

[0091] Meanwhile, the on / off operation of the dryer (13) and the on / off operation of the fan unit (50) are controlled in conjunction. In other words, when the dryer (13) is operated, the fan unit (50) is also operated automatically. As a result, even if the user operates only the dryer (13) while the fan unit (50) is not operating, the odor generated from the dryer (13) can be removed through the duct section (30) of the present invention.

[0092] In addition, the present invention may further include a function to change the speed of the fan unit (50) during the drying operation of the dryer (13). In other words, when the dryer (13) is turned ON while the fan unit (50) is stopped or rotating at a low speed, the rotational speed of the fan unit (50) is controlled to increase. As a result, odors generated in the dryer (13) can be quickly removed through the duct section (30) of the present invention.

[0093] In this way, the operation of the dryer (13) and the operation of the fan unit (50) are interlocked, which has the advantage of improving user convenience and improving the fume removal function in the dryer.

[0094] Although each embodiment of the present invention has been described above with reference to the drawings, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the invention as described in the following claims.

Claims

1. A table (10) providing an experimental space (R); A variable hood (40) positioned to surround the upper, both sides and the rear of the above experimental space (R) and to seal all sides except the front of the experimental space (R); and A duct section (30) disposed in an internal space surrounded by the variable hood (40) and having an inlet (31a) formed therein for introducing fumes generated in the experimental space (R); wherein The above variable hood (40) is characterized by maintaining an unfolded state to surround the other directions except the front of the experiment space (R) during an experiment in which fumes are generated, and changing to a folded state when the experiment is completed, thus having a fume removal function.

2. In Claim 1, The above variable hood (40) is a left and right side plate (41, 42) installed facing each other with the inlet (31a) in between on both sides of the duct section (30); and An experimental bench equipped with a fume removal function, characterized by comprising: a top plate (43) installed on the upper part of the duct section (30) and surrounding the experimental space (R) together with the left and right plates (41, 42).

3. In Claim 2, The upper plate (43) is installed to be slidable back and forth on the upper part of the duct section (30), and A test bench equipped with a fume removal function, characterized in that the left plate (41) and the right plate (42) are rotatably installed on the side of the duct section (30) to open and close the inlet (31a).

4. In Claim 2, The upper plate (43) is installed to be slidable back and forth on the upper part of the duct section (30), and A test bench equipped with a fume removal function, characterized in that the left plate (41) and the right plate (42) are hinged (H) to the side of the top plate (43) and folded toward the bottom of the top plate (43).

5. In Claim 1, An experimental bench equipped with a fume removal function, characterized in that the duct section (30) is installed upright on the upper surface of the table (10), and the inlet (31a) is formed at a certain height above the front of the experimental space (R).

6. In Claim 5, A test bench equipped with a fume removal function, characterized in that the above duct section (30) is composed of an upper duct (31) in which the inlet (31a) is formed and which is positioned above the table (10), and a lower duct (32) which extends below the table (10) and is connected to a fan unit (50) that provides suction power to discharge fumes to the outside of the test bench through the duct section (30).

7. In Claim 6, A test bench equipped with a fume removal function, characterized in that the upper and lower ducts (31)(32) are formed in a straight line as a whole to guide the fume introduced through the inlet (31a) downward in a straight line toward the fan unit (50).

8. In Claim 7, A laboratory bench equipped with a fume removal function, characterized in that the above fan unit (50) is installed on the laboratory floor (Ground) below the laboratory bench.

9. In Claim 5, A test bench equipped with a fume removal function, characterized in that the above inlet (31a) is formed as a pair facing each other on one side and the other side of the duct section (30).

10. In Claim 9, A test bench equipped with a fume removal function, characterized in that the variable hood (40) is installed on each side of the duct section (30) in which each inlet (31a) is formed, and the pair of inlets (31a) are individually opened and closed by the left and right side plates (41, 42) forming the variable hood (40).

11. In Claim 5, A test bench equipped with a fume removal function, characterized in that a mounting slit (31b) is formed immediately below the inlet (31a) of the duct section (30) to which a filter unit (60) for filtering fumes introduced through the inlet (31a) is detachably installed.

12. In Claim 1, A fan unit (50) that provides suction power to discharge the above fume to the outside of the test table through the duct section (30), and A control unit (70) that controls the above fan unit (50), and An experimental table equipped with a fume removal function, characterized by further including a gas detection sensor (S) for detecting fumes generated during the above experiment, wherein the rotational speed of the fan unit (50) is controlled differently according to the concentration of fumes measured by the gas detection sensor (S).

13. In Claim 12, A control unit (70) that controls the above fan unit (50), and Further including a timer (T) that counts the time associated with a specific experiment schedule pre-entered in the control unit (70), An experiment table equipped with a fume removal function, characterized in that the rotational speed of the fan unit (50) is controlled differently depending on the duration of the specific experiment.

14. In Claim 1, A laboratory bench equipped with a fume removal function, characterized in that the table (10) is provided with a sink (12) for washing experimental tools, and the duct section (30) and variable hood (40) are installed on one side of the sink (12).

15. In Claim 5, The above variable hood (40) is a test bench equipped with a fume removal function, characterized by completely surrounding the remaining directions except for the front of the test space (R).

16. In Claim 15, The above variable hood (40) is characterized by maintaining an unfolded state to surround the other directions except the front of the experiment space (R) during the experiment, and then changing to a folded state when the experiment is completed, thus having a fume removal function.

17. In Claim 11, A test bench equipped with a fume removal function, characterized in that a filter sampling port (31c) into which a gas detection tube (D) for checking the filter replacement time is inserted is formed immediately below where the filter unit (50) is mounted in the duct section (30).

18. In Claim 1, A test bench equipped with a fume removal function, characterized in that a variable operation detection means (90) for detecting the variable operation of the variable hood (40) is installed on one side of the variable hood (40), and the variable operation detection means (90) provides a signal to automatically operate or stop a fan unit (50) that provides a suction force to cause fumes to flow into the duct section (30) according to the folding or unfolding operation of the variable hood (40).

19. In Claim 1, The table (10) is equipped with a sink (12) for washing experimental tools, and the duct section (30) is installed on one side of the sink (12). On one side of the table (10), a dryer (13) capable of drying washed experimental tools is provided, and A test bench equipped with a fume removal function, characterized in that the dryer (13) and the duct section (30) are connected by a first pipe (14) so ​​that fumes generated from the dryer (13) flow into the duct section (30), and fumes generated from the dryer (13) flow into the duct section (30) through the first pipe (14).

20. In Claim 19, An experimental bench equipped with a fume removal function, characterized in that the on / off operation of the fan unit (50) is linked to the on / off operation of the dryer (13), and when the dryer (13) is operated, the rotational speed of the fan unit (50) increases.

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