CN113134500A - Exhaust cabinet - Google Patents

Abstract

The invention relates to an air exhaust cabinet, comprising: a cabinet body with an inner cavity, the inner cavity constitutes a working cavity, along the width direction of the air exhaust cabinet, the cabinet body has a left side plate and a right side plate, and the cavity wall of the inner cavity includes a left side plate and a right side plate. Part of the inner surface of the side panel and part of the inner surface of the right panel, the left panel and/or the right panel are physical and chemical panels or anti-folding panels respectively, and extend from the top to the bottom of the fume hood respectively; the left aluminum profile , extending from the top to the bottom along the height direction of the fume hood, at least partially forming the left front wall of the fume hood, the left side aluminum profile is installed with the left side plate; and/or the right side aluminum profile, extending from the top to the bottom along the height direction The bottom, at least in part, constitutes the right front wall of the fume hood, and the right side aluminum profile is installed with the right side plate. The left and right side panels of the fume hood of the invention are simple to process, the damage phenomenon of the fume hood during transportation is reduced, and the service life is prolonged.

Description

a fume hood

technical field

The invention relates to the technical field of exhaust, in particular to an exhaust cabinet.

Background technique

Ventilation equipment can generally be described as a device that removes exhaust gas, harmful gases and particulate matter from a working space to the outside of the working space (usually outdoors). This kind of equipment has a wide range of applications in industry and life, such as , factories that produce toxic and harmful or particulate gas in industrial production, biological and chemical laboratories of R&D institutions, kitchens that generate oil fume during cooking, etc., all need ventilation equipment to isolate toxic gases and particulate matter in a certain working space from users. , to prevent users from inhaling toxic and harmful gases and particles, and to discharge toxic and harmful gases and particles outdoors.

The left and right side panels of the existing fume hood are generally formed by splicing multiple steel plates, and the processing is complicated. After the fume hood is assembled and then transported as a whole, there is damage during the transportation process, and the fume hood is in complex condition. When used in a laboratory environment, the service life of the fume hood will be affected due to corrosion and humidity.

SUMMARY OF THE INVENTION

The problems solved by the invention are that the left and right side panels of the existing fume hood are complicated to process, the fume hood is damaged during transportation, and the service life is low.

In order to solve the above problems, the purpose of the present invention is to provide a fume hood, comprising: a cabinet body having an inner cavity, the inner cavity forming a working cavity, and along the width direction of the fume hood, the cabinet body has a left a side plate and a right side plate, the cavity wall of the inner cavity includes a part of the inner surface of the left side plate and a part of the inner surface of the right side plate, the left side plate and/or the right side plate are respectively The physicochemical board or the anti-folding board respectively extends from the top to the bottom of the fume hood; the aluminum profile on the left side extends from the top to the bottom along the height direction of the fume hood, at least partially constituting the The left front wall of the fume hood, the left aluminum profile is installed with the left panel; and/or the right aluminum profile extends from the top to the bottom along the height direction, at least partially constituting the The right front wall of the fume hood, and the right side plate is installed on the right side aluminum profile.

Optionally, the rear wall and/or the top wall of the working chamber are respectively a physicochemical board or an anti-Bite board.

Optionally, it also includes: a work table, the work table constitutes the bottom wall of the work cavity, and the work table is a physical and chemical plate or ceramics.

Optionally, the thickness of the left side plate is 10mm to 20mm, and the thickness of the right side plate is 10mm to 20mm.

Optionally, it also includes: a viewing window, which is arranged on the front wall of the cabinet, the viewing window can be opened along the height direction as a whole to form a front opening open to the indoor environment, and the glass on the viewing window can be opened along the The width direction is opened to form a front opening that is open to the indoor environment.

Optionally, a socket is provided on the rear wall of the working chamber, and a control switch is provided on the front wall of the cabinet, the control switch and the socket are connected by a live wire, and the control switch is used for conducting or Disconnect the live wire to control the socket to be energized or de-energized.

Optionally, the control switch is a knob, and the knob can be rotated to a first position or a second position; in the first position, the knob conducts the live wire; in the second position, the The knob cuts the live wire.

Optionally, a plurality of sockets are provided on the rear wall of the working chamber, and each of the sockets corresponds to a control switch; wherein, the distribution form of the plurality of sockets is the same as that of the corresponding control switches.

Optionally, the rear wall of the working chamber is provided with a first protective cover in an openable manner, and the first protective cover is used to cover the socket; the front wall of the cabinet body is openable in a manner A second protective cover is provided, and the second protective cover is used to cover the control switch.

Optionally, also include:

an air inlet passage extending along the first direction, and an air inlet is provided on the air inlet passage;

The adjustment channel extends along the second direction, along the second direction, the adjustment channel has an inlet and an outlet, the inlet of the adjustment channel is communicated with the outlet of the air inlet channel, and the adjustment channel is in the first The area of any cross section in the direction is greater than the area of the cross section of the outlet of the air inlet channel;

an air outlet channel, an air outlet is arranged on the air outlet channel, and the inlet of the air outlet channel is detachably connected with the outlet of the adjustment channel;

An orifice plate extending along a third direction is arranged in the adjustment channel and/or at the air outlet, and the first direction, the second direction and the third direction form a set angle with each other.

Optionally, along the second direction, the adjustment channel includes a first adjustment channel and a second adjustment channel that are detachably connected, the inlet is arranged in the first adjustment channel, and the outlet is arranged in the second adjustment channel. aisle;

The orifice plate includes one of the following or any combination thereof: a first orifice plate, a second orifice plate and a third orifice plate; wherein,

the first orifice plate extends along the third direction and is arranged at the connection between the first adjustment channel and the second adjustment channel;

The second orifice plate extends along the third direction, and the second orifice plate is arranged at the connection between the second adjustment channel and the inlet of the air outlet channel;

The third orifice plate is arranged at the air outlet and covers the air outlet.

Optionally, along the second direction, the working cavity is located between the air inlet channel and the air outlet, the air outlet is arranged below the cabinet body, and the air outlet faces the interior The cavity is arranged to supply air into the working cavity.

Optionally, the inlet of the air outlet channel and the outlet of the adjustment channel are detachably connected through the combination of the concave part and the convex part.

Optionally, along the third direction, the inlet of the air outlet channel and the outlet of the adjustment channel are detachably connected.

Optionally, the first adjustment channel and the second adjustment channel are detachably connected through the combination of the concave portion and the convex portion.

Optionally, along the third direction, the first adjustment channel and the second adjustment channel are detachably connected.

Optionally, the adjustment channel and the air outlet channel are respectively formed by extrusion molding of aluminum profiles or plastic extrusion molding.

Optionally, it further includes: a base cabinet located below the working cavity, the base cabinet has an aluminum profile frame, and the aluminum profile frame has an installation groove, and the installation groove is used for installing a plate piece to form a storage cavity.

Optionally, the aluminum profile frame includes: a top aluminum profile frame, a bottom aluminum profile frame, a left aluminum profile frame, a right aluminum profile frame, a rear aluminum profile frame, and a front aluminum profile frame surrounded by aluminum profiles.

Optionally, the plate components include: a top plate component installed on the top aluminum profile frame, a bottom plate component installed on the bottom aluminum profile frame, a left plate component installed on the left aluminum profile frame, an installation The right plate member of the right aluminum profile frame, the rear plate member installed on the rear aluminum profile frame, and the front plate member installed on the front aluminum profile frame, wherein the front plate member is connected to the front aluminum profile frame. The profile frame is pivotally connected to form the base cabinet door.

Optionally, the front aluminum profile frame includes a front aluminum profile extending along the height direction, and the front aluminum profile includes:

a first installation surface, the first installation surface is located outside the storage cavity;

a second installation surface, which is perpendicular to the first installation surface, and the second installation surface is located in the storage cavity;

a first installation groove, recessed on the first installation surface;

The bottom cabinet door is rotatably connected to the front aluminum profile through a loose leaf, and the loose leaf includes: a first part, a second part and a third part that are vertically connected to each other, the first part is attached to the second installation surface, The second part is located in the first installation groove, the third part protrudes from the first installation groove, and the third part has a first shaft hole penetrating the third part along the height direction ;

The bottom cabinet door is provided with a second installation groove and a second shaft hole extending along the height direction. After the third part is installed in the second installation groove, the shaft passes through the first shaft at the same time. hole and the second shaft hole.

Optionally, the first installation groove passes through the first installation surface along the width direction.

Optionally, along the height direction, the second shaft holes are respectively provided on both sides of the second installation slot.

As above, at least one of the left side panel and the right side panel of the fume hood provided by the present invention is a physical and chemical panel or an anti-folding panel, and the left side panel and the right side panel respectively extend from the top to the bottom of the fume hood, And the cavity wall of the working cavity of the fume hood is formed, that is, the left side plate and the right side plate are integrally processed and formed, instead of a spliced processing method, which makes the processing of the left side plate and the right side plate simple. And because at least one of the left and right panels of the fume hood is a physical and chemical board or an anti-folding board, which improves the strength of the left and right panels of the fume hood, and is easy to prevent corrosion and moisture, Extends the life of the fume hood in complex laboratory environments.

The left and right plates are respectively installed on the left aluminum profile and the right aluminum profile, using the assembly method of aluminum profile + physical and chemical board/anti-fold special board, the aluminum profile has high processing precision, easy to produce, suitable for assembly , can directly transport aluminum profiles and physical and chemical boards/anti-fold special boards, and complete the assembly of the fume hood on site, without the need to transport the fume hood as a whole, which reduces the occurrence of damage during the overall transportation of the fume hood.

In order to make the above-mentioned content of the present invention more obvious and easy to understand, preferred embodiments are hereinafter described in detail with reference to the accompanying drawings.

Description of drawings

Fig. 1 is the perspective view 1 of the fume hood according to the embodiment of the present invention;

Fig. 2 is the perspective view 2 of the fume hood according to the embodiment of the present invention;

3 is a partial enlarged view of the fume hood according to the embodiment of the present invention;

FIG. 4 is a three-dimensional view of the fume hood according to the embodiment of the present invention;

Fig. 5 is the perspective view 4 of the fume hood according to the embodiment of the present invention;

6 is a perspective view five of the fume hood according to the embodiment of the present invention;

7 is a perspective view 1 of the air supply structure in the fume hood according to the embodiment of the present invention;

FIG. 8 is a perspective view 2 of the air supply structure in the fume hood according to the embodiment of the present invention;

Fig. 9 is a partial enlarged view of the supplementary air structure in the fume hood according to the embodiment of the present invention;

FIG. 10 is a perspective view 1 of the bottom cabinet in the fume hood according to the embodiment of the present invention;

Fig. 11 is a perspective view 2 of the bottom cabinet in the fume hood according to the embodiment of the present invention;

12 is a perspective view three of the bottom cabinet in the fume hood according to the embodiment of the present invention;

Fig. 13 is a partial enlarged view of the bottom cabinet in the fume hood according to the embodiment of the present invention;

14 is a partial enlarged view of the bottom cabinet in the fume hood according to the embodiment of the present invention.

Detailed ways

The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the invention will be presented in conjunction with the preferred embodiment, this does not mean that the features of the invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of the invention. The following description will contain numerous specific details in order to provide a thorough understanding of the present invention. The invention may also be practiced without these details. Furthermore, some specific details will be omitted from the description in order to avoid obscuring or obscuring the gist of the present invention. It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

Referring to FIGS. 1 to 3 , the present invention provides a fume hood 6 , comprising: a cabinet body 60 having an inner cavity 60a, the inner cavity 60a constituting a working cavity, along the width direction of the fume hood 6 ( FIG. 1 Z direction), the cabinet 60 has a left side panel 61 and a right side panel 62, and the cavity wall of the inner cavity 60a includes a part of the inner surface of the left side panel 61 and the right side panel 62. Part of the inner surface, that is, part of the inner surface of the left side plate 61 is the left wall of the working chamber, and part of the inner surface of the right side plate 62 is the right wall of the working chamber; in this embodiment, the left side plate 61 and all The right side plate 62 is respectively a physicochemical board or an anti-folding board, and extends from the top to the bottom of the fume hood 6 respectively, then the left wall of the working cavity and the right wall of the working cavity are respectively a physicochemical board or an anti-folding special board. board; in other embodiments, one of the left side board 61 and the right side board 62 is a physical and chemical board or an anti-folding board, and extends from the top to the bottom of the fume cupboard 6 .

As above, at least one of the left side panel 61 and the right side panel 62 of the fume hood 6 provided by the present invention is a physical and chemical board or an anti-folding board, and the left side panel 61 and the right side panel 62 are formed by the fume hood 6 respectively. The top of the hood extends to the bottom, and constitutes the cavity wall of the working cavity of the fume hood 6, that is, the left side panel 61 and the right side panel 62 are integrally processed and formed, and are no longer spliced. The right side plate 62 is easy to process. And since at least one of the left side panel 61 and the right side panel 62 of the fume cupboard 6 is a physical and chemical board or an anti-folding board, this improves the strength of the left side panel 61 and the right side panel 62 of the fume cupboard 6, and It is easy to prevent corrosion and moisture, and prolong the service life of the fume hood 6 in complex laboratory environments.

In addition, the fume hood 6 also includes a left aluminum profile 63 that extends from the top to the bottom along the height direction of the fume hood 6 (shown in the X direction in FIG. 1 ), at least partially constituting the exhaust air The left front wall of the cabinet 6, the left aluminum profile 63 is mounted with the left side panel 61; and the right aluminum profile 64 extends from the top to the bottom along the height direction, at least partially constituting the On the right front wall of the fume cupboard 6 , the right side plate 62 is installed on the right side aluminum profile 64 . In other embodiments, the left aluminum profile 63 or the right aluminum profile 64 may be provided.

Since the left side plate 61 and the right side plate 62 are respectively installed on the left aluminum profile 63 and the right aluminum profile 64, using the assembly method of aluminum profile + physicochemical board/anti-fold special board, the processing precision of the aluminum profile is high, and the output is easy. It is suitable for assembly. It can directly transport aluminum profiles and physical and chemical boards/anti-folding boards. The assembly of the fume hood 6 is completed on site, and there is no need to transport the fume hood 6 as a whole, which reduces the damage to the fume hood 6 during the overall transportation. phenomenon occurs.

Optionally, the rear wall and/or the top wall of the working chamber are respectively a physicochemical board or an anti-Bite board. After this arrangement, the strength of the cavity wall of the working cavity is improved, and it is easy to prevent corrosion and moisture, which prolongs the service life of the fume hood 6 in a complex laboratory environment. Among them, the left and right walls of the working chamber are oppositely arranged along the width direction of the exhaust cabinet 6, the top wall of the working chamber and the bottom wall described later are oppositely arranged along the height direction of the exhaust cabinet 6, and the rear wall of the working chamber is opposite to the exhaust cabinet 6. The front opening of the cabinet 6, which will be described later, is oppositely arranged along the thickness direction of the fume cupboard 6 (shown in the Y direction in FIG. 1).

Referring to FIG. 2 , the fume hood 6 further includes: a work surface 60b, the work surface 60b constitutes the bottom wall of the work cavity, and the work surface 60b is a physical and chemical board or ceramics. After this arrangement, the strength of the bottom wall of the work surface 60b is improved, and it is easy to prevent corrosion and moisture, which prolongs the service life of the fume hood 6 in a complex laboratory environment.

Optionally, the thickness of the left side plate 61 of the present invention is 10mm to 20mm, including 10mm and 20mm; the thickness of the right side plate 62 (shown by T in FIG. 3 ) is 10mm to 20mm, including 10mm and 20mm . Further optionally, the thickness of the left side plate 61 of the present invention is 12.7 mm, and the thickness of the right side plate 62 is 12.7 mm. That is, the left side panel 61 and the right side panel 62 of the present invention are narrowed, and correspondingly, the thicknesses of the left aluminum profile 63 and the right aluminum profile 64 are also narrowed, so that the fume hood 6 of the present invention uses a narrow frame , Compared with the traditional fume cupboard 6, the side panel of each cupboard can reduce the width space.

In this way, more experimental equipment can be placed (increased R&D benefits) or the required area of use can be reduced (reduced site costs). Because the narrow frame design can be achieved, the total width of each original fume hood can also be retained, and the use space inside the working cavity can be expanded. In this way, researchers can operate more experiments in each cabinet, thereby increasing experimental efficiency and scientific research output.

1 and 4, the fume cupboard 6 further comprises: a viewing window 65, which is arranged on the front wall of the cabinet body 60, and the viewing window 65 can be opened in the height direction as a whole to form a front opening open to the indoor environment, The front opening is used as an operation port, and the viewing window 65 moves down to the lowest position along the height direction to close the front opening; in addition, the glass on the viewing window 65 of the present invention can be opened along the width direction to form a front opening open to the indoor environment, After this setting, the user does not need to pull up the entire window 65, which is convenient for operation.

2 and 5, a socket 66 is provided on the rear wall of the working chamber of the present invention, and a control switch 67 is provided on the front wall of the cabinet 60, and the control switch 67 and the socket 66 pass through the live wire connection, the control switch 67 is used to turn on or off the live wire, so as to control the socket 66 to be in the power-on or power-off state. The socket 66 may be a three-phase socket or a two-phase socket, and is connected to the ground wire and the neutral wire. After this setting, after the electrical device in the working chamber is connected to the socket 66, there is no need to plug and unplug frequently, and the socket 66 is directly controlled by the control switch 67 to be powered on or off, and then the electrical device is controlled to be powered on or off, avoiding frequent plugging and unplugging. The inconvenience caused and the impact on the service life of electrical devices.

In this embodiment, a plurality of sockets 66 are arranged on the rear wall of the working chamber, and each socket 66 corresponds to a control switch 67; wherein, the distribution form of the plurality of sockets 66 is the same as that of the corresponding control switches 67, In this way, the power-on or power-off of the corresponding socket 66 can be accurately controlled by the control switch 67 . For example, referring to FIG. 5 , four sockets 66 are provided on the rear wall of the working chamber, and four control switches 67 are provided on the front wall of the cabinet 60. The control switch 67 in the upper left corner controls the power-on or off of the socket 66 in the upper left corner. Electricity, the control switch 67 in the upper right corner controls the power-on or power-off of the socket 66 in the upper right corner, the control switch 67 in the lower left corner controls the power-on or power-off of the socket 66 in the lower left corner, and the control switch 67 in the lower right corner controls the socket 66 in the lower right corner. power-on or power-off.

Optionally, referring to FIG. 5 , the control switch 67 of the present invention is a knob, and the knob can be rotated to a first position or a second position; in the first position, the knob conducts the live wire; In the second position, the knob cuts the live wire. Wherein, the periphery of the control switch 67 is marked OFF/ON. When the knob is rotated to ON, the knob conducts the live wire; when the knob is rotated to OFF, the knob cuts off the live wire.

It should be noted that the type of the control switch 67 is not limited to a knob, and it is sufficient to cut off or conduct the live wire, for example, a push-type control switch 67 .

In addition, referring to FIGS. 1 and 2 , the rear wall of the working chamber is provided with a first protective cover 68 in an openable manner, and the first protective cover 68 is used to cover the socket 66 ; the cabinet body 60 A second protective cover 69 is provided on the front wall of the device in an openable manner, and the second protective cover 69 is used to cover the control switch 67 . The first protective cover 68 functions to protect the socket 66 , and the second protective cover 69 functions to protect the control switch 67 to avoid damage to the socket 66 and the control switch 67 caused by environmental or external factors. In this embodiment, the first protective cover 68 is rotatably connected with the rear wall of the working chamber, and the second protective cover 69 is rotatably connected with the front wall of the cabinet 60 .

Referring to FIGS. 6 to 9 , the fume hood 6 of the present invention further includes a supplementary air structure 1, and the supplementary air structure 1 includes: an air inlet channel 10 extending along a first direction (shown in the X direction in FIG. 7 ), the air inlet The air channel 10 is provided with an air inlet 11; the adjustment channel 20 extends along a second direction (shown in the Y direction in FIG. 7 ). Along the second direction, the adjustment channel 20 has an inlet and an outlet, and the adjustment channel The inlet of 20 is communicated with the outlet of the air inlet channel 10, and the area of any cross section of the adjustment channel 20 in the first direction is larger than the area of the cross section of the outlet of the air inlet channel 10; A channel 30, an air outlet 31 is provided on the air outlet channel 30, and the inlet of the air outlet channel 30 is detachably connected to the outlet of the adjustment channel 20; the adjustment channel 20 and/or the outlet The tuyere 31 is provided with an orifice plate extending along a third direction (shown in the Z direction in FIG. 7 ), and the first direction, the second direction and the third direction form a set angle with each other.

After this setting, the outside air from the air inlet channel 10 enters the adjustment channel 20, which is equivalent to entering a large space from a small space. After the outside air passes through the orifice, the influence of the jet on the uneven flow field is reduced, and part of the dynamic pressure is reduced It is converted into static pressure to reduce the speed of the outside air, and finally the wind speed of the air outlet 31 is uniform, so that the air outlet 31 can evenly supply air to the working chamber of the fume cupboard 6, which plays the role of voltage stabilization and noise reduction.

The black dashed arrow in FIG. 8 shows the circulation direction of the outside air on the air supply structure 1. The initial speed of the outside air entering the air inlet channel 10 from the air inlet 11 of the air supply structure 1 is relatively large, and the outside air passes through the adjustment channel 20. After that, the velocity of the outside air can be adjusted after the equalizing of the orifice plate, and finally the outlet air velocity of the air outlet 31 is uniform and the velocity is small.

In addition, since the inlet of the air outlet channel 30 is detachably connected to the outlet of the adjustment channel 20, the air outlet channel 30 and the adjustment channel 20 are modularized and assembled after being processed separately, so that mass production can be realized. It also facilitates the transportation of the air supply structure 1, and does not need to be transported as a whole after assembly, thereby reducing damage to the air supply structure 1 during transportation.

Optionally, the adjustment channel 20 and the air outlet channel 30 are respectively extruded by aluminum profiles to realize modular processing of the adjustment channel 20 and the air outlet channel 30 . In addition, the extrusion molding of aluminum profiles has the characteristics of high precision, simple processing, easy transportation of bulk parts to reduce transportation difficulty, and simple modular structure and installation. However, the modular processing of the adjustment channel 20 and the air outlet channel 30 is not limited to extrusion molding, and may also be plastic extrusion molding or other methods capable of modular processing.

The set angles between the first direction, the second direction and the third direction are selected according to the actual requirements of the air supplement structure 1 . Optionally, the angle between the first direction and the second direction is 80° to 90°, including 80° and 90°; the angle between the first direction and the third direction is 80° to 90°, including 80° and 90°; the angle between the second direction and the third direction is 80° to 90°, inclusive. Optionally, the first direction is the height direction of the fume hood 6 , the second direction is the thickness direction of the fume hood 6 , and the third direction is the width direction of the fume hood 6 .

Referring to FIG. 9 , along the second direction, the adjustment channel 20 includes a first adjustment channel 201 and a second adjustment channel 202 that are detachably connected, and the inlet is provided in the first adjustment channel 201 . The outlet is provided in the second adjustment channel 202 , and the second adjustment channel 202 and the inlet of the air outlet channel 30 are detachably connected. That is, the adjustment channel 20 is modularized and divided into two parts to be processed separately, and then the assembly is completed after the separate processing, so that mass production can be realized. Optionally, the first adjustment channel 201 and the second adjustment channel 202 are respectively formed by extrusion molding of aluminum profiles or plastic extrusion molding.

It should be noted that the adjustment channel 20 is not limited to be divided into two parts, and can be changed according to actual needs, for example, three parts that are detachably connected to each other.

Referring to FIGS. 7 and 9 , the orifice plate includes one of the following or any combination thereof: a first orifice plate 21 , a second orifice plate 22 and a third orifice plate 32 ; The second orifice plate 22 extends along the third direction, and is located at the connection between the first adjustment channel 201 and the second adjustment channel 202 ; the second orifice plate 22 extends along the third direction, and the second orifice plate 22 is located in The connection between the second adjustment channel 202 and the inlet of the air outlet channel 30 ; the third orifice plate 32 is arranged at the air outlet 31 and covers the air outlet 31 .

That is, the air supplement structure 1 includes the first orifice plate 21 or the second orifice plate 22 or the third orifice plate 32; or the first orifice plate 21 and the second orifice plate 22; or the second orifice plate 22 and the third orifice plate 32; or, the first orifice plate 21 and the third orifice plate 32; or, the combination of the first orifice plate 21, the second orifice plate 22 and the third orifice plate 32. According to the air volume of the air inlet 11 , the air supplement structure 1 selects and sets the corresponding form of orifice plate.

In this embodiment, the air supplement structure 1 includes a first orifice plate 21 , a second orifice plate 22 and a third orifice plate 32 . The initial velocity of the outside air entering the air inlet channel 10 from the air inlet 11 of the supplementary air structure 1 is relatively large. After the flow is equalized, after the third orifice plate 32 equalizes the flow three times, the wind speed of the final air outlet 31 is uniform and the speed is small.

Optionally, along the second direction, the working chamber is located between the air inlet channel 10 and the air outlet 31 , the air outlet 31 is provided below the cabinet 60 , and the air outlet 31 is disposed toward the inner cavity 60a to supply air into the working cavity. Equivalently, in this embodiment, the air supplement structure 1 is placed behind the fume cupboard 6 . The air inlet channel 10 of the air supplement structure 1 is located at the rear side of the fume cupboard 6 , not on both sides in the width direction (ie, the third direction) of the fume cupboard 6 . With this arrangement, the thickness of the columns on both sides of the fume cupboard 6 can be reduced.

Since the air outlet of the existing fume hood is located in the middle of the top, the air inlet channel of the existing fume hood is located on both sides of the width direction of the cabinet, and the columns on both sides are relatively thick (for example, the width of the column is 11.5cm), which leads to The negative pressure on both sides of the working chamber of the wind cabinet is the smallest. By adopting the air supply structure 1 of the present invention, the air supply cabinet 6 can be realized using a narrow frame structure while the air supply is realized, and the turbulent flow and wind resistance on both sides can be greatly reduced with a thin thickness, resulting in excessively low and unstable negative pressure. The hidden danger of harmful gas leakage in the cabinet is reduced, and the safety performance of the fume cupboard 6 itself is improved.

In addition, the structure of the rear air intake channel no longer needs to be "hanged" on the basic structure of the fume hood with a large and heavy structure like many existing air supply structures. Because the center of gravity of the air supply structure 1 of the present invention is pulled back, self-balancing is no longer heavy from top to bottom, and the keel material and steel bars of the fume hood 6 originally used to support the traditional air supply structure 1 can also be reduced. The overall weight of the fume cupboard 6 can be greatly reduced. Since the fume hood 6 needs to be handled manually in many links in the transportation and installation process, after the weight is greatly reduced, the safety and work-related injury risks of many installers can be simultaneously greatly reduced.

In addition, referring to FIG. 9 , the inlet of the air outlet channel 30 and the outlet of the adjustment channel 20 are detachably connected through the combination of the concave part and the convex part. Optionally, along the third direction, the inlet of the air outlet channel 30 is detachably connected to the outlet of the adjustment channel 20 . In this embodiment, the inlet of the air outlet channel 30 is provided with a convex portion oppositely arranged in the height direction, the outlet of the adjustment channel 20 is provided with a concave portion corresponding to the convex portion, and the adjustment channel 20 is inserted into the air outlet channel along the third direction At the entrance of 30, the convex part and the concave part are combined to realize detachable connection, the installation is convenient, the connection is reliable, and the movement of the adjustment channel 20 and the air outlet channel 30 in the second direction is restricted. However, the detachable connection method between the inlet of the air outlet channel 30 and the outlet of the adjustment channel 20 is not limited to this, and a detachable connection can be realized, such as a snap connection.

In addition, the first adjustment channel 201 and the second adjustment channel 202 are detachably connected through the combination of the concave portion and the convex portion. Optionally, along the third direction, the first adjustment channel 201 and the second adjustment channel 202 are detachably connected. In this embodiment, the first adjustment channel 201 is provided with a convex portion oppositely disposed along the height direction, the second adjustment channel 202 is provided with a concave portion corresponding to the convex portion, and the second adjustment channel 202 is inserted into the first adjustment channel along the third direction 201, so that the convex part and the concave part are combined to realize detachable connection, the installation is convenient, the connection is reliable, and the movement of the first adjustment channel 201 and the second adjustment channel 202 in the second direction is restricted. However, the detachable connection manner of the first adjustment channel 201 and the second adjustment channel 202 is not limited to this, and a detachable connection can be realized, for example, a snap connection.

As a preferred embodiment of the present invention, the air inlet channel 10 has a first outlet and a second outlet spaced along a third direction (shown in the Z direction in FIG. 7 ), and the cross section of the outlet of the air inlet channel 10 has a The area is the sum of the area of the cross-section of the first outlet and the area of the cross-section of the second outlet. As a preferred embodiment of the present invention, the area of the cross section of the first outlet is equal to the area of the cross section of the second outlet.

As a preferred embodiment of the present invention, the aperture ratio of the first orifice plate 21 is 30% to 80%, including 30% and 80%. Further preferably, the aperture ratio of the first orifice plate 21 is 52%. More preferably, the aperture ratio of the first orifice plate 21 is 55%. The shape of the openings on the first orifice plate 21 is not limited. As a preferred embodiment of the present invention, the first orifice plate 21 adopts a hexagonal orifice plate with a circumscribed circle diameter of 6 mm. The shape of the openings of the first orifice plate 21 may also be circular, square, triangular and other orifice plates of various specifications.

As a preferred embodiment of the present invention, the opening ratio of the second orifice plate 22 is 30% to 80%, including 30% and 80%. Further preferably, the aperture ratio of the second orifice plate 22 is 52%. More preferably, the aperture ratio of the second orifice plate 22 is 55%. The shape of the openings on the second orifice plate 22 is not limited. As a preferred embodiment of the present invention, the second orifice plate 22 adopts a hexagonal orifice plate with a circumscribed circle diameter of 6 mm. The shape of the openings of the second orifice plate 22 may also be circular, square, triangular and other orifice plates of various specifications.

As a preferred embodiment of the present invention, the aperture ratio of the third orifice plate 32 is 30% to 80%, including 30% and 80%. Further preferably, the aperture ratio of the third orifice plate 32 is 52%. More preferably, the aperture ratio of the third orifice plate 32 is 55%. The shape of the openings on the third orifice plate 32 is not limited. As a preferred embodiment of the present invention, the third orifice plate 32 is a hexagonal orifice plate with a circumscribed circle diameter of 6 mm. The shape of the openings of the third orifice plate 32 may also be circular, square, triangular and other orifice plates of various specifications.

As a preferred embodiment of the present invention, after the outside air flows through the air inlet channel 10 , the adjustment channel 20 and the air outlet channel 30 in sequence from the air inlet 11 , the air is evenly supplied by the air outlet 31 , the uniform air supply is defined as follows: (Vmax-Vav)/Vav≤30%, or, (Vav-Vmin)/Vav≤30%, where Vmax is the maximum measured wind speed at the air outlet 31, and Vav is The average value of the wind speed measurement at the air outlet 31 , and Vmin is the minimum value of the wind speed measurement at the air outlet 31 . As a preferred embodiment of the present invention, the uniform air supply is defined as follows: (Vmax-Vav)/Vav≤10%, or, (Vav-Vmin)/Vav≤10%. After the air supply structure 1 of the present invention is provided with the first orifice plate 21, the second orifice plate 22 and the third orifice plate 32 as described in the foregoing embodiments, the air outlet 31 supplies air uniformly, which satisfies the definition of uniform air supply.

As a preferred embodiment of the present invention, the area of the cross section of the outlet of the air inlet channel 10 is S1, and the area of any cross section of the adjustment channel 20 is S2, 0.04≤S1/S2≤0.06. As a preferred embodiment of the present invention, 0.045≤S1/S2≤0.056.

1, 2, and 10 to 12, the fume hood 6 of the present invention further includes: a base cabinet 7, located below the working cavity in the height direction, the base cabinet 7 has an aluminum profile frame 70, The aluminum profile frame 70 has a mounting groove 71 for mounting a plate member to form a storage cavity 70a.

Since the bottom cabinet 7 adopts an aluminum profile frame 70, the aluminum profile frame 70 is formed by connecting a plurality of cut aluminum profiles. The aluminum profiles have high processing precision, easy production, and are suitable for assembly; and the aluminum profiles are provided with installation slots. 71. Plate parts with corresponding functions can be installed on the aluminum profiles according to the needs of users. For example, according to the requirements of anti-corrosion, moisture-proof, fire prevention, etc., the plate parts with these functions are selected to be installed on the installation slot 71 of the aluminum profile frame 70, The individual requirements are realized, unlike the traditional base cabinet 7, which has a single function, and can only be customized for cabinets with different functions; and as the user's functional requirements change, the aluminum profile frame 70 can be replaced and installed on the aluminum profile frame 70. Plate parts with corresponding functions , the user experience is good.

And it can realize multiple purposes on one base cabinet 7. For example, the left side of the base cabinet 7 can be made into a corrosion-resistant base cabinet, and the right side can be made into a fireproof cabinet, or the upper side of the base cabinet 7 can be made into a corrosion-resistant base cabinet. The bottom can be made into a fireproof cabinet, etc. That is, the aluminum profile frame 70 can be divided into different functional areas, which are formed by installing the corresponding functional plate parts in the installation grooves 71 of the corresponding areas, and a plurality of functional areas are distributed along the width direction or height direction of the fume hood at intervals. , or there are functional areas at intervals in both the height direction and the width direction. In addition, the replacement of the plate parts in the subsequent installation groove 71 is very convenient, and it can be replaced wherever it is broken, thereby reducing maintenance costs.

Referring to FIG. 11 , the aluminum profile frame 70 of the present invention includes: a top aluminum profile frame 72 , a bottom aluminum profile frame 73 , a left aluminum profile frame 74 , a right aluminum profile frame 75 , and a rear aluminum profile frame 76 surrounded by aluminum profiles. , the front aluminum profile frame 77; the aluminum profile frame is in the shape of four sides, but the specific shape of the aluminum profile frame is not limited, and the corresponding changes are made according to the actual use requirements. Among them, the top aluminum profile frame 72 and the bottom aluminum profile frame 73 are respectively surrounded by four aluminum profiles, and are arranged at intervals along the height direction (shown in the X direction in FIG. 11 ); the left aluminum profile frame 74 and the right aluminum profile frame 75 are respectively It is surrounded by four aluminum profiles and arranged at intervals along the width direction (shown in the Z direction in FIG. 11 ); the front aluminum profile frame 77 and the rear aluminum profile frame 76 are respectively surrounded by four aluminum profiles, and are arranged along the thickness direction (Figure 11). 11 shown in the Y direction) interval setting.

As shown in FIG. 11 , the rear aluminum profile frame 76 includes two sub-rear aluminum profile frames distributed along the width direction, and the front aluminum profile frame 77 includes three sub-front aluminum profile frames distributed along the width direction. Cabinet 7 has three base cabinet doors. However, the number of each aluminum profile frame is not limited, and the corresponding changes are made according to the actual needs.

Optionally, referring to FIG. 11 , the aluminum profile frame 70 is divided into four functional areas, the upper functional area A and the lower functional area B are arranged at intervals along the height direction on the left, and the upper functional area is arranged at intervals along the height direction on the right side. C and the lower functional area D, the two functional areas on the left and the two functional areas on the right are spaced apart in the width direction by the plate pieces in the middle mounting groove 71 .

Correspondingly, the plate members include: a top plate member 81 installed in the installation groove 71 of the top aluminum profile frame 72 , a bottom plate member installed in the installation groove 71 of the bottom aluminum frame 73 , The left plate member in the installation groove 71 of the left aluminum profile frame 74 , the right plate member 83 installed in the installation groove 71 of the right aluminum profile frame 75 , and the installation groove 71 of the rear aluminum profile frame 76 The rear plate part inside, and the front plate part 82 installed in the installation groove 71 of the front aluminum profile frame 77 . Wherein, the front plate member 82 is rotatably connected with the front aluminum profile frame 77 to form a base cabinet door.

Referring to FIGS. 13 and 14 again, the front aluminum profile frame 77 includes a front aluminum profile 771 extending along the height direction (shown in the X direction in FIG. 11 ), and the front aluminum profile 771 includes: a first installation The first installation surface 772 is located outside the storage cavity 70a; the second installation surface 773 is perpendicular to the first installation surface 772, and the second installation surface 773 is located in the storage cavity 70a, That is, the second installation surface 773 is adjacent to the first installation surface 772 ; the first installation groove is recessed in the first installation surface 772 .

The bottom cabinet door is rotatably connected to the front aluminum profile 771 through the loose-leaf 9. In this embodiment, each bottom cabinet door is rotatably connected to the front aluminum profile 771 through two loose-leaf 9 spaced along the height direction, but The number of loose sheets 9 is not limited to this.

Optionally, the loose leaf 9 is made of PPS material, which has the characteristics of corrosion resistance, high temperature resistance, high strength and simple installation. However, the material of the loose-leaf 9 is not limited to this, and the bottom cabinet door can be rotatably connected to the front aluminum profile 771 through the loose-leaf 9 .

The leaflet 9 of the present invention includes: a first part 91 , a second part 92 and a third part 93 that are vertically connected to each other, the first part 91 is attached to the second mounting surface 773 , and the second part 92 is located at In the first installation groove, the third part 93 protrudes from the first installation groove, and the third part 93 has a first shaft hole penetrating the third part 93 along the height direction; the The door of the base cabinet 7 is provided with a second installation slot 821 and a second shaft hole 822 extending along the height direction. After the third part 93 is installed in the second installation slot 821, the third part 93 will not The protruding second installation slot 821 is equivalent to being "hidden" in the door of the base cabinet 7, and the rotating shaft 94 passes through the first rotating shaft hole and the second rotating shaft hole 822 at the same time to realize the rotational connection.

After this setting, after installing the bottom cabinet 7 doors, most of the loose-leaf 9 is covered. On the one hand, it protects the loose-leaf 9 and prevents damage to the loose-leaf 9, such as corrosion of the loose-leaf 9 by corrosive liquid; on the other hand, the bottom Cabinet 7 is integrated and beautiful.

Optionally, the first installation groove passes through the first installation surface 772 along the width direction (shown in the Z direction in FIG. 13 ), which facilitates the installation of the leaflet 9 in the first installation groove.

Optionally, referring to FIG. 14 , along the height direction (shown in the X direction in FIG. 14 ), the second shaft holes 822 are respectively provided on both sides of the second installation slot 821 . This facilitates the rotational connection between the top and bottom of the door of the base cabinet 7 and the loose leaf 9 through the rotating shaft 94 .

To sum up, the above-mentioned embodiments provided by the present invention merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present invention should still be covered by the claims of the present invention.

Claims (23)

1. An exhaust hood, comprising:

the cabinet body is provided with an inner cavity, the inner cavity forms a working cavity, the cabinet body is provided with a left side plate and a right side plate along the width direction of the exhaust cabinet, the cavity wall of the inner cavity comprises a part of inner surface of the left side plate and a part of inner surface of the right side plate, and the left side plate and/or the right side plate are respectively a physiochemical plate or an anti-doubling plate and respectively extend from the top to the bottom of the exhaust cabinet;

the left side aluminum profile extends from the top to the bottom along the height direction of the exhaust cabinet, at least part of the left side aluminum profile forms the left front wall of the exhaust cabinet, and the left side aluminum profile is provided with the left side plate; and/or

The right side aluminium alloy is followed the direction of height by the top extends to the bottom, at least part constitutes the right front wall of cabinet of airing exhaust, the right side aluminium alloy is installed the right side board.

2. A hood as in claim 1 wherein the back and/or top walls of the working chamber are physiochemical boards or resistive boards, respectively.

3. A hood as claimed in claim 1 further comprising: the table surface comprises a bottom wall of the working cavity, and the table surface is a chemical board or ceramic.

4. A hood as in claim 1 wherein said left side panel is 10mm to 20mm thick and said right side panel is 10mm to 20mm thick.

5. A hood as claimed in claim 1 further comprising: the window is located the antetheca of the cabinet body, the window is whole to be able to follow the direction of height is opened in order to form to the open preceding opening of indoor environment, glass on the window can be followed width direction is opened in order to form to the open preceding opening of indoor environment.

6. An exhaust cabinet according to claim 1, wherein a socket is provided on a rear wall of the working chamber, a control switch is provided on a front wall of the cabinet body, the control switch is connected to the socket through a live wire, and the control switch is used for switching on or off the live wire to control the socket to be in a power-on or power-off state.

7. A hood as in claim 6 wherein the control switch is a knob rotatable to a first position or a second position; in the first position, the knob turns on the live wire; in the second position, the knob cuts off the hot line.

8. A cabinet according to claim 7, wherein a plurality of sockets are provided on the rear wall of the working chamber, each socket corresponding to a control switch; the distribution form of the plurality of sockets is the same as the distribution form of the plurality of corresponding control switches.

9. A hood as in claim 6 wherein said rear wall of said working chamber is openably provided with a first protective cover for covering said socket; a second protective cover is arranged on the front wall of the cabinet body in an openable mode and used for covering the control switch.

10. A hood as claimed in claim 1 further comprising:

the air inlet channel extends along a first direction, and an air inlet is formed in the air inlet channel;

the adjusting channel extends along a second direction, the adjusting channel is provided with an inlet and an outlet along the second direction, the inlet of the adjusting channel is communicated with the outlet of the air inlet channel, and the area of any cross section of the adjusting channel in the first direction is larger than that of the cross section of the outlet of the air inlet channel;

the air outlet channel is provided with an air outlet, and the inlet of the air outlet channel is detachably connected with the outlet of the adjusting channel;

and a pore plate extending along a third direction is arranged in the adjusting channel and/or at the air outlet, and the first direction, the second direction and the third direction form a set angle with each other.

11. A hood according to claim 10 wherein said adjustment path includes a first adjustment path and a second adjustment path detachably connected to each other along said second direction, said inlet is provided in said first adjustment path, and said outlet is provided in said second adjustment path;

the orifice plate comprises one or any combination of the following: a first orifice plate, a second orifice plate, and a third orifice plate; wherein,

the first orifice plate extends along the third direction and is arranged at the joint of the first adjusting channel and the second adjusting channel;

the second pore plate extends along the third direction, and is arranged at the joint between the inside of the second adjusting channel and the inlet of the air outlet channel;

the third orifice plate is arranged at the air outlet and covers the air outlet.

12. An exhaust cabinet according to claim 10, wherein along the second direction, the working chamber is located between the air inlet passage and the air outlet, the air outlet is located below the cabinet body, and the air outlet is disposed toward the inner chamber to supply air into the working chamber.

13. A hood as claimed in claim 10 wherein the inlet of the outlet air duct is removably connected to the outlet of the adjustment duct by a combination of recesses and projections.

14. A hood as claimed in claim 13 wherein, in said third direction, the inlet of said outlet duct is removably connected to the outlet of said adjustment duct.

15. A hood as in claim 11 wherein said first adjustment channel and said second adjustment channel are removably connected by a combination of a female portion and a male portion.

16. A hood according to claim 15 wherein said first adjustment channel and said second adjustment channel are removably connected in said third direction.

17. A hood as in claim 10 wherein said adjustment duct and said air outlet duct are formed by extrusion of aluminum or plastic, respectively.

18. A hood as claimed in claim 1 further comprising: the end cabinet is located the below of working chamber, the end cabinet has aluminum section frame, aluminum section frame has the mounting groove, the mounting groove is used for installing sheet spare in order to constitute the storage chamber.

19. A hood as in claim 18 wherein said aluminum frame comprises an aluminum frame: top aluminium alloy frame, bottom aluminium alloy frame, left aluminium alloy frame, right aluminium alloy frame, back aluminium alloy frame, preceding aluminium alloy frame.

20. A hood as claimed in claim 19 wherein the sheet material member comprises: install in the top panel spare of top aluminium alloy frame, install in the bottom panel spare of bottom aluminium alloy frame, install in the left panel spare of left side aluminium alloy frame, install in the right panel spare of right side aluminium alloy frame, install in the back panel spare of back aluminium alloy frame, install in the preceding panel spare of preceding aluminium alloy frame, wherein, preceding panel spare with preceding aluminium alloy frame rotates and connects in order to constitute end cabinet door.

21. A hood as claimed in claim 19 wherein the front aluminum frame includes a front aluminum profile extending in the height direction, the front aluminum profile including:

a first mounting face located outside of the storage cavity;

a second mounting surface perpendicular to the first mounting surface, the second mounting surface being located within the storage cavity;

the first mounting groove is concavely arranged on the first mounting surface;

the bottom cabinet door is connected with the front aluminum section bar through a hinge in a rotating manner, and the hinge comprises: the first part is attached to the second mounting surface, the second part is located in the first mounting groove, the third part extends out of the first mounting groove, and the third part is provided with a first rotating shaft hole penetrating through the third part along the height direction;

the bottom cabinet door is provided with a second mounting groove and a second rotating shaft hole extending in the height direction, the third portion is mounted in the second mounting groove, and a rotating shaft penetrates through the first rotating shaft hole and the second rotating shaft hole simultaneously.

22. A hood according to claim 21, wherein said first mounting slot extends through said first mounting surface in said width direction.

23. A cabinet according to claim 21, wherein said second shaft hole is formed at each of both sides of said second mounting groove in said height direction.

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