Smoke exhaust base structure capable of ventilating and ventilating system

Abstract

The utility model relates to a ventilating smoke discharging base structure and a ventilating system. The ventilating smoke discharging base structure comprises a base unit, a supporting unit, a ventilating unit, a water retaining unit and a control unit. The base unit is arranged on a roof, and a smoke exhaust device is installed at the top of the base unit. The supporting unit is arranged at the top end of the base unit. The ventilation unit is arranged on the surface of the base unit, and the outer end of the ventilation unit does not exceed the surface of the base unit; the water retaining unit is arranged at the end part of the ventilation unit; the control unit is arranged in the base unit and connected with the ventilation unit. The ventilation structure has the advantages that the ventilation unit with the adjustable angle is arranged on the base unit, and the problem that ventilation requirements of plants with different functions cannot be met due to the fact that an existing smoke exhaust equipment base is not provided with a ventilation structure is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel roof ventilation facilities, in particular to a smoke exhaust base structure with ventilation function and a ventilation system. Background Technique

[0002] The ventilation skylight of the factory building is a large-scale ventilation device commonly used in industrial buildings, which integrates ventilation, daylighting and smoke exhaust. It is of great significance to improve the internal environment of the factory building and the production efficiency.

[0003] The side wall of the existing ventilation and smoke exhaust base is not provided with the ventilation function of the louver, which cannot meet the ventilation requirements of special factory buildings; if the ventilation louver is set on the smoke exhaust base, the phenomenon of rain splashing is likely to occur.

[0004] At present, aiming at the problems in the related technology that the existing smoke exhaust equipment base does not have a ventilation structure and thus cannot meet the ventilation requirements of different functional factory buildings, no effective solution has been proposed yet. Content of the Utility Model

[0005] The purpose of the utility model is to provide a smoke exhaust base structure and a ventilation system for the deficiencies in the existing technology, so as to solve the problems in the related technology that the existing smoke exhaust equipment base does not have a ventilation structure and thus cannot meet the ventilation requirements of different functional factory buildings.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] In the first aspect, a smoke exhaust base structure is provided, including:

[0008] A base unit, the base unit is arranged on the roof, and a smoke exhaust device is installed on the top of the base unit;

[0009] A support unit, the support unit is arranged at the top end of the base unit, and is used to prevent the base unit from deforming;

[0010] A ventilation unit, the ventilation unit is arranged on the surface of the base unit, and the outer end of the ventilation unit is not set to exceed the surface of the base unit, and is used to ventilate the inside of the base unit;

[0011] A water blocking unit, the water blocking unit is arranged at the end of the ventilation unit, and is used to prevent the liquid splashed from the roof from entering the inside of the base unit;

[0012] A control unit, the control unit is arranged inside the base unit and is connected to the ventilation unit, and is used to control and adjust the opening angle of the ventilation unit.

[0013] In some of these embodiments, the base unit includes:

[0014] A base element, the base element is arranged on the roof surface, and the top end of the base element is provided with the support unit;

[0015] At least one opening element, the opening element is arranged on the surface of the base element, and the ventilation unit is arranged inside the opening element;

[0016] At least one first connecting element, the first connecting element is arranged inside the corresponding opening element and is connected to the ventilation unit;

[0017] An installation element, the installation element is arranged on the top end of the base element and is connected to the smoke exhaust device.

[0018] In some of the embodiments, the support unit includes:

[0019] At least one support element, the support element is arranged on the top end of the base unit and is used to prevent the base unit from deforming.

[0020] In some of the embodiments, the ventilation unit includes:

[0021] At least one second connecting element, the second connecting element is arranged on the surface of the base unit, and the outer end of the second connecting element is not arranged to extend beyond the surface of the base unit;

[0022] A plurality of louver elements, a plurality of the louver elements are respectively rotatably arranged inside the corresponding second connecting element;

[0023] A plurality of first transmission elements, a plurality of the first transmission elements are respectively rotatably connected to the corresponding louver elements;

[0024] A second transmission element, the second transmission element is rotatably connected to a plurality of the first transmission elements, and the second transmission element can reciprocate in the vertical direction to adjust the opening angle of a plurality of the louver elements;

[0025] A driving element, the driving element is respectively connected to the second transmission element and the control unit and is used to control the movement of the second transmission element.

[0026] In some of the embodiments, the ventilation unit further includes:

[0027] A handle element, the handle element is connected to the second transmission element and is used to manually adjust the opening angle of a plurality of the louver elements.

[0028] In some of the embodiments, the water blocking unit includes:

[0029] A number of first water-blocking elements, and a number of the first water-blocking elements are respectively arranged at the bottom end of the ventilation unit for preventing the liquid splashed from the roof from entering the interior of the base unit.

[0030] In some of these embodiments, the water-blocking unit further includes:

[0031] A number of second water-blocking elements, and a number of the second water-blocking elements are respectively arranged at the top end of the ventilation unit, and the top end of the second water-blocking element is arranged higher than the bottom end of the adjacent first water-blocking element.

[0032] In some of these embodiments, it further includes:

[0033] A sealing unit, the sealing unit is arranged inside the base unit and covers the edge of the ventilation unit for preventing rainwater from entering the base unit.

[0034] In some of these embodiments, the sealing unit includes:

[0035] A first sealing element, the first sealing element is arranged on the upper side inside the base unit;

[0036] A second sealing element, the second sealing element is arranged on the lower side inside the base unit.

[0037] In a second aspect, there is provided a ventilation system, including:

[0038] A smoke exhaust base structure as described in the first aspect;

[0039] A smoke exhaust device, the smoke exhaust device is arranged on the top of the smoke exhaust base structure and is connected to the base unit of the smoke exhaust base structure.

[0040] The present utility model adopts the above technical solutions, and compared with the prior art, has the following technical effects:

[0041] A smoke exhaust base structure and a ventilation system of the present utility model, by arranging an angle-adjustable ventilation unit in the base unit, can meet the ventilation requirements of different factories. At the same time, a water-blocking unit is arranged at the end of the ventilation unit, improving the waterproof property of the ventilation unit, and solving the problem that the existing smoke exhaust equipment base does not have a ventilation structure and thus cannot meet the ventilation requirements of different functional factories. Description of the Drawings

[0042] Figure 1 It is a schematic diagram (one) of the smoke exhaust base structure according to an embodiment of the present utility model;

[0043] Figure 2 It is a schematic diagram of the base unit according to an embodiment of the present utility model;

[0044] Figure 3 is a schematic diagram of a support unit according to an embodiment of the present utility model;

[0045] Figure 4 is a schematic diagram of a ventilation unit according to an embodiment of the present utility model;

[0046] Figure 5 is a schematic diagram of a water blocking unit according to an embodiment of the present utility model;

[0047] Figure 6 is a schematic diagram (II) of a smoke exhaust base structure according to an embodiment of the present utility model;

[0048] Figure 7 is a schematic diagram of a sealing unit according to an embodiment of the present utility model;

[0049] Figure 8 is a schematic diagram of a ventilation system according to an embodiment of the present utility model.

[0050] The reference numerals therein are: 110, base unit; 111, base element; 112, opening element; 113, first connecting element; 114, mounting element;

[0051] 120, support unit; 121, support element;

[0052] 130, ventilation unit; 131, second connecting element; 132, louver element; 133, first transmission element; 134, second transmission element; 135, driving element; 136, handle element;

[0053] 140, water blocking unit; 141, first water blocking element; 142, second water blocking element;

[0054] 150, control unit;

[0055] 160, sealing unit; 161, first sealing element; 162, second sealing element;

[0056] 200, smoke exhaust device. Detailed implementation manners

[0057] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0058] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0059] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not limited to the present utility model.

[0060] Embodiment 1

[0061] This embodiment relates to the smoke exhaust base structure of the present utility model.

[0062] A schematic embodiment of the present utility model, as Figure 1 shown, a smoke exhaust base structure includes a base unit 110, a support unit 120, a ventilation unit 130, a water blocking unit 140, and a control unit 150. Among them, the base unit 110 is arranged on the roof, and a smoke exhaust device is installed on the top of the base unit 110; the support unit 120 is arranged at the top of the base unit 110 to prevent the base unit 110 from deforming; the ventilation unit 130 is arranged on the surface of the base unit 110, and the outer end of the ventilation unit 130 is not set beyond the surface of the base unit 110 for ventilating the inside of the base unit 110; the water blocking unit 140 is arranged at the end of the ventilation unit 130 to prevent the liquid splashed from the roof from entering the inside of the base unit 110; the control unit 150 is arranged inside the base unit 110 and is connected to the ventilation unit 130 to control and adjust the opening angle of the ventilation unit 130.

[0063] In some of these embodiments, the control unit 150 includes, but is not limited to, a control device with remote communication function.

[0064] As Figure 2 shown, the base unit 110 includes a base element 111, at least one opening element 112, at least one first connecting element 113, and a mounting element 114. Among them, the base element 111 is arranged on the roof, and the support unit 120 is arranged at the top of the base element 111; the opening element 112 is arranged on the surface of the base element 111, and the ventilation unit 130 is arranged inside the opening element 112; the first connecting element 113 is arranged inside the corresponding opening element 112 and is connected to the ventilation unit 130; the mounting element 114 is arranged at the top of the base element 111 and is connected to the smoke exhaust device.

[0065] In some of these embodiments, the cross-section of the base element 111 is rectangular.

[0066] In some of these embodiments, the base element 111 is a metal support base.

[0067] The opening element 112 penetrates through the surface of the base element 111.

[0068] In some of these embodiments, the number of the opening elements 112 is two. The two opening elements 112 are respectively arranged on the front side wall and the rear side wall of the base element 111.

[0069] In some of these embodiments, the cross-section of the opening element 112 is rectangular.

[0070] In some of these embodiments, the connection mode of the first connection element 113 and the base element 111 includes but is not limited to screw connection and welding.

[0071] The number of the first connection elements 113 matches the number of the opening elements 112. Generally, the number of the first connection elements 113 is equal to the number of the opening elements 112, that is, the first connection elements 113 and the opening elements 112 are in one-to-one correspondence.

[0072] In some of these embodiments, the number of the first connection elements 113 is two. The two first connection elements 113 are respectively arranged inside the corresponding opening elements 112.

[0073] The size of the first connection element 113 matches the size of the opening element 112. Generally, the radial dimensions (such as width, height) of the first connection element 113 are equal to the radial dimensions (such as width, height) of the opening element 112.

[0074] In some of these embodiments, the cross-section of the first connection element 113 is L-shaped. Specifically, the open end of the first connection element 113 faces the inside of the base element 111.

[0075] In some of these embodiments, the first connection element 113 includes but is not limited to a mounting frame.

[0076] In some of these embodiments, the connection mode of the mounting element 114 and the base element 111 includes but is not limited to welding and screw connection.

[0077] The size of the mounting element 114 matches the size of the base element 111. Generally, the radial dimension (such as width) of the mounting element 114 is equal to the radial dimension (such as width) of the base element 111.

[0078] In some of these embodiments, the cross-section of the mounting element 114 is rectangular.

[0079] In some of these embodiments, the mounting element 114 includes but is not limited to a metal bracket, etc.

[0080] As Figure 3 shown, the support unit 120 includes at least one support element 121. Wherein, the support element 121 is arranged at the top end of the base unit 110 for preventing the base unit 110 from deforming.

[0081] Specifically, the support element 121 is disposed at the top end of the base element 111 to prevent the base element 111 from deforming.

[0082] In some of the embodiments, the connection manner between the support element 121 and the base element 111 includes but is not limited to bolt connection and welding.

[0083] In some of the embodiments, the number of the support elements 121 is several. The several support elements 121 are spaced apart along the axial direction of the base element 111.

[0084] In some of the embodiments, the cross-sectional shape of the support element 121 includes but is not limited to I-shaped and rectangular.

[0085] In some of the embodiments, the support element 121 includes but is not limited to steel purlins.

[0086] As Figure 4 shown, the ventilation unit 130 includes at least one second connection element 131, several louver elements 132, several first transmission elements 133, a second transmission element 134, and a driving element 135. Among them, the second connection element 131 is disposed on the surface of the base unit 110, and the outer end of the second connection element 131 is not disposed beyond the surface of the base unit 110; the several louver elements 132 are respectively rotatably disposed inside the corresponding second connection element 131; the several first transmission elements 133 are respectively rotatably connected to the corresponding louver elements 132; the second transmission element 134 is rotatably connected to the several first transmission elements 133, and the second transmission element 134 can reciprocate in the vertical direction to adjust the opening angle of the several louver elements 132; the driving element 135 is respectively connected to the second transmission element 134 and the control unit 150 for controlling the movement of the second transmission element 134.

[0087] Specifically, the second connection element 131 is disposed inside the opening element 112 and is connected to the first connection element 113.

[0088] In some of the embodiments, the connection manner between the second connection element 131 and the first connection element 113 includes but is not limited to screw connection and welding.

[0089] The number of the second connection elements 131 matches the number of the opening elements 112. Generally, the number of the second connection elements 131 is equal to the number of the opening elements 112, that is, the second connection elements 131 and the opening elements 112 are in one-to-one correspondence.

[0090] The size of the second connecting element 131 matches the size of the first connecting element 113. Generally, the radial dimensions (such as width and height) of the second connecting element 131 are equal to the radial dimensions (such as width and height) of the first connecting element 113.

[0091] In some of these embodiments, the cross-section of the second connecting element 131 is rectangular.

[0092] In some of these embodiments, the second connecting element 131 includes, but is not limited to, a metal frame.

[0093] A plurality of louver elements 132 are arranged at intervals along the height direction of the second connecting element 131.

[0094] The louver elements 132 are arranged obliquely. Specifically, one end of the louver element 132 close to the outside of the base element 111 is lower than the end close to the inside of the base element 111, that is, the louver element 132 is arranged obliquely towards the outside of the base element 111.

[0095] In some of these embodiments, the planar shape of the louver element 132 is rectangular.

[0096] In some of these embodiments, the length of the louver element 132 is less than or equal to the width of the inner contour of the second connecting element 131.

[0097] In some of these embodiments, the louver element 132 is made of a waterproof material, including but not limited to aluminum alloy, etc.

[0098] The number of the first transmission elements 133 matches the number of the louver elements 132. Generally, the number of the first transmission elements 133 is equal to the number of the louver elements 132, that is, the first transmission elements 133 and the louver elements 132 are in one-to-one correspondence.

[0099] In some of these embodiments, the first transmission element 133 includes a clip, a first through hole, a first rotating shaft, a second through hole, and a first locking member. Among them, the first end of the clip is perpendicularly connected to the louver element 132; the first through hole is arranged through the middle of the clip; the first rotating shaft passes through the first through hole and is horizontally arranged, and the first end of the first rotating shaft is connected to the second connecting element 131; the second through hole is arranged through the second end of the clip; the first locking element is respectively connected to the second through hole and the second transmission element 134.

[0100] In some of these embodiments, the connection manner between the clip and the louver element 132 includes, but is not limited to, welding.

[0101] In some of these embodiments, the clip is in a folded angle shape, and the folded angle is an obtuse angle.

[0102] In some of these embodiments, the clip is made of a waterproof material, including but not limited to stainless steel.

[0103] The cross-section of the first through-hole is circular.

[0104] In some embodiments thereof, the connection manner between the first rotating shaft and the second connecting element 131 includes but is not limited to welding.

[0105] The cross-section of the first rotating shaft is circular.

[0106] The diameter of the first rotating shaft is equal to the diameter of the first through-hole.

[0107] The cross-section of the second through-hole is circular.

[0108] In some embodiments thereof, the first locking member is a bolt group.

[0109] In some embodiments thereof, the second transmission element 134 includes a transmission shaft, a plurality of third through-holes and a connecting member. Wherein, the transmission shaft is arranged vertically; the plurality of third through-holes are arranged at intervals along the vertical direction through the transmission shaft and are connected to the corresponding louver elements 132; the first end of the connecting member is connected to the transmission shaft, and the second end is connected to the driving element 135.

[0110] Specifically, the plurality of third through-holes are connected to the corresponding first locking members.

[0111] In some embodiments thereof, the transmission shaft is rod-shaped.

[0112] In some embodiments thereof, the transmission shaft includes but is not limited to a hollow rod and a strip of iron sheet.

[0113] The third through-hole penetrates through the transmission shaft.

[0114] The number of the third through-holes matches the number of the first transmission elements 133. Generally, the number of the third through-holes is equal to the number of the first transmission elements 133, that is, the third through-holes correspond to the first transmission elements 133 one by one. Specifically, the third through-holes correspond to the second through-holes and the first locking members one by one.

[0115] In some embodiments thereof, the cross-section of the third through-hole is circular.

[0116] In some embodiments thereof, the diameter of the third through-hole is equal to the diameter of the second through-hole.

[0117] In some embodiments thereof, the connection manner between the connecting member and the transmission shaft and the driving element 135 includes but is not limited to screw connection.

[0118] In some embodiments thereof, the longitudinal cross-sectional shape of the connecting member is an isosceles triangle. Specifically, the bottom edge of the connecting member is connected to the transmission shaft and is parallel to each other, and the top angle opposite to the bottom edge is connected to the driving element 135.

[0119] In some of these embodiments, the driving element 135 includes, but is not limited to, an electric push rod, etc.

[0120] Furthermore, the ventilation unit 130 further includes a handle element 136. Among them, the handle element 136 is connected to the second transmission element 134 and is used to manually adjust the opening angle of a plurality of louver elements 132.

[0121] In some of these embodiments, the handle element 136 is vertically arranged.

[0122] In some of these embodiments, the connection manner between the handle element 136 and the second transmission element 134 includes, but is not limited to, screw connection.

[0123] In some of these embodiments, the handle element 136 includes, but is not limited to, a grip rod, etc.

[0124] As Figure 5 shown, the water blocking unit 140 includes a plurality of first water blocking elements 141. Among them, the plurality of first water blocking elements 141 are respectively arranged at the bottom end of the ventilation unit 130 and are used to prevent the liquid splashed from the roof from entering the interior of the base unit 110.

[0125] Specifically, the plurality of first water blocking elements 141 are respectively arranged at the bottom end of the corresponding louver elements 132.

[0126] In some of these embodiments, the first water blocking element 141 is integrally formed with the louver element 132.

[0127] In some of these embodiments, the radial direction of the first water blocking element 141 is perpendicular to the radial direction of the louver element 132.

[0128] The number of the first water blocking elements 141 matches the number of the louver elements 132. Generally, the number of the first water blocking elements 141 is equal to the number of the louver elements 132, that is, the first water blocking elements 141 and the louver elements 132 are in one-to-one correspondence.

[0129] The size of the first water blocking element 141 matches the size of the louver element 132. Generally, the axial dimension of the first water blocking element 141 is equal to the axial dimension of the louver element 132, and the radial dimension of the first water blocking element 141 is smaller than the vertical distance between two adjacent louver elements 132.

[0130] In some of these embodiments, the first water blocking element 141 is a first water blocking plate.

[0131] Furthermore, the water blocking unit 140 further includes a plurality of second water blocking elements 142. Among them, the plurality of second water blocking elements 142 are respectively arranged at the top end of the ventilation unit 130, and the top end of the second water blocking element 142 is arranged higher than the bottom end of the adjacent first water blocking element 141.

[0132] Specifically, a plurality of second water blocking elements 142 are respectively arranged at the tops of the corresponding louver elements 132.

[0133] In some of these embodiments, the second water blocking element 142 and the louver element 132 are integrally formed.

[0134] The second water blocking element 142 is arranged on the side away from the first water blocking element 141.

[0135] In some of these embodiments, the radial direction of the second water blocking element 142 and the radial direction of the louver element 132 are perpendicular to each other.

[0136] The number of the second water blocking elements 142 matches the number of the louver elements 132. Generally, the number of the second water blocking elements 142 is equal to the number of the louver elements 132, that is, the second water blocking elements 142 and the louver elements 132 are in one-to-one correspondence.

[0137] The size of the second water blocking element 142 matches the size of the louver element 132. Generally, the axial dimension of the second water blocking element 142 is equal to the axial dimension of the louver element 132, and the radial dimension of the second water blocking element 142 is less than the vertical distance between two adjacent louver elements 132.

[0138] In some of these embodiments, the second water blocking element 142 is a second water blocking plate.

[0139] The advantages of the present utility model are that by providing a ventilation unit with an adjustable angle in the base unit, the ventilation requirements of different workshops can be met. At the same time, a water blocking unit is arranged at the end of the ventilation unit, improving the waterproof property of the ventilation unit and solving the problem that the existing base of the smoke exhaust equipment does not have a ventilation structure and thus cannot meet the ventilation requirements of workshops with different functions.

[0140] Embodiment 2

[0141] This embodiment is a supplementary embodiment of Embodiment 1.

[0142] As Figure 6 shown, the smoke exhaust base structure further includes a sealing unit 160. Among them, the sealing unit 160 is arranged inside the base unit 110 and covers the edge of the ventilation unit 130, for preventing rainwater from entering the base unit 110.

[0143] As Figure 7 shown, the sealing unit 160 includes a first sealing element 161 and a second sealing element 162. Among them, the first sealing element 161 is arranged on the upper side inside the base unit 110; the second sealing element 162 is arranged on the lower side inside the base unit 110.

[0144] Specifically, the first sealing element 161 is disposed on the upper side inside the base element 111; the second sealing element 162 is disposed on the lower side inside the base element 111.

[0145] In some of these embodiments, the connection manner between the first sealing element 161 and the base element 111 includes but is not limited to bonding.

[0146] In some of these embodiments, the first sealing element 161 includes but is not limited to a sealing strip.

[0147] In some of these embodiments, the connection manner between the second sealing element 162 and the base element 111 includes but is not limited to bonding.

[0148] In some of these embodiments, the second sealing element 162 includes but is not limited to a sealing strip.

[0149] The advantage of this embodiment is that by providing the sealing unit, the sealing performance between the smoke exhaust base structure and the roof and the smoke exhaust device is improved, thereby improving the waterproof performance of the smoke exhaust base structure.

[0150] Embodiment 3

[0151] As Figure 8 shown, a ventilation system includes the smoke exhaust base structure 100 and the smoke exhaust device 200 as described in Embodiments 1 to 2. Among them, the smoke exhaust device 200 is disposed on the top of the smoke exhaust base structure 100 and is connected to the base unit 110 of the smoke exhaust base structure 100.

[0152] Specifically, the smoke exhaust device 200 is disposed on the top of the base element 111 and is connected to the mounting element 114.

[0153] In some of these embodiments, the smoke exhaust device is connected to the mounting element 114 by screws.

[0154] The above are only the preferred embodiments of the present utility model, and thus do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be able to realize that all the equivalent replacements and obvious changes made by using the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ventilable smoke exhaust base structure, characterized in that, Comprising: A base unit, which is arranged on the roof surface, and a smoke exhaust device is installed on the top of the base unit; A support unit, which is arranged at the top end of the base unit and is used to prevent the base unit from deforming; A ventilation unit, which is arranged on the surface of the base unit, and the outer end of the ventilation unit is not set to exceed the surface of the base unit, and is used to ventilate the inside of the base unit; A water blocking unit, which is arranged at the end of the ventilation unit and is used to prevent the liquid splashed from the roof from entering the inside of the base unit; A control unit, which is arranged inside the base unit and is connected to the ventilation unit, and is used to control and adjust the opening angle of the ventilation unit.

2. The smoke exhaust base structure according to claim 1, wherein, The base unit includes: A base element, which is arranged on the roof surface, and the support unit is arranged at the top end of the base element; At least one opening element, which is arranged on the surface of the base element, and the ventilation unit is arranged inside the opening element; At least one first connecting element, which is arranged inside the corresponding opening element and is connected to the ventilation unit; An installation element, which is arranged at the top end of the base element and is connected to the smoke exhaust device.

3. The smoke exhaust base structure according to claim 1, characterized in that, The support unit includes: At least one support element, which is arranged at the top end of the base unit and is used to prevent the base unit from deforming.

4. The smoke exhaust base structure according to claim 1, characterized in that, The ventilation unit includes: At least one second connecting element, which is arranged on the surface of the base unit, and the outer end of the second connecting element is not set to exceed the surface of the base unit; A plurality of louver elements, which are respectively rotatably arranged inside the corresponding second connecting element; A plurality of first transmission elements, which are respectively rotatably connected to the corresponding louver elements; A second transmission element, which is rotatably connected to the plurality of first transmission elements, and the second transmission element can reciprocate in the vertical direction to adjust the opening angle of the plurality of louver elements; A driving element, which is respectively connected to the second transmission element and the control unit and is used to control the movement of the second transmission element.

5. The smoke exhaust base structure according to claim 4, wherein, The ventilation unit further includes: A handle element, which is connected to the second transmission element and is used to manually adjust the opening angle of the plurality of louver elements.

6. The smoke exhaust base structure according to claim 1, characterized in that, The water blocking unit includes: A plurality of first water blocking elements, which are respectively arranged at the bottom end of the ventilation unit and are used to prevent the liquid splashed from the roof from entering the inside of the base unit.

7. The smoke exhaust base structure according to claim 6, characterized in that, The water blocking unit further includes: A plurality of second water blocking elements, which are respectively arranged at the top end of the ventilation unit, and the top end of the second water blocking element is set higher than the bottom end of the adjacent first water blocking element.

8. The smoke exhaust base structure according to any one of claims 1 to 7, characterized in that, Further comprising: A sealing unit, which is arranged inside the base unit and covers the edge of the ventilation unit and is used to prevent rainwater from entering the base unit.

9. The smoke exhaust base structure according to claim 8, wherein, The sealing unit includes: A first sealing element, the first sealing element being disposed on the upper side inside the base unit; A second sealing element, the second sealing element being disposed on the lower side inside the base unit.

10. A ventilation system, characterized in that, Comprising: The smoke exhaust base structure according to any one of claims 1 to 9; A smoke exhaust device, the smoke exhaust device being disposed on the top of the smoke exhaust base structure and connected to the base unit of the smoke exhaust base structure.

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