Outdoor smoke exhaust structure of building centralized smoke exhaust system and its use control method

Abstract

The present invention relates to an outdoor smoke exhaust structure of a centralized smoke exhaust system of a building and a method for controlling its use, wherein the outdoor smoke exhaust structure includes an air outlet duct, the top of the air outlet duct is closed, and the side wall of the air outlet duct is provided with N air outlets facing different directions, where N is a natural number greater than or equal to 2; the characteristics are: a windshield is provided at each air outlet, and a driving mechanism connected to the windshield at the corresponding air outlet, and further includes a detection element for detecting external environmental parameters, and the N driving mechanisms and the detection elements are electrically connected to a control mechanism, and the control mechanism can control one of the driving mechanisms or a combination of any driving mechanisms according to the environmental parameters detected by the detection element, so as to control the corresponding windshield to open, block or close the air outlet on the corresponding side. Compared with the prior art, the present invention can actively open or close the air outlets on different sides according to the external environmental parameters, thereby improving the user experience and reducing user complaints.

Description

Technical Field

[0001] The invention relates to an outdoor smoke exhaust structure of a centralized smoke exhaust system of a building and a use control method thereof. Background Art

[0002] During the construction of many existing high-rise residential buildings, in order to maintain the appearance of the entire building, a centralized smoke exhaust system is used for centralized smoke exhaust. The system includes indoor range hoods installed in the kitchens of different residents on different floors, a public flue installed inside the building, and an outdoor auxiliary exhaust fan system installed on the top floor of the building. The air outlets of the indoor range hoods are connected to the public flue, and the air outlets of the public flue are connected to the inlet of the outdoor auxiliary exhaust fan system.

[0003] A hood is set on the top of the outdoor exhaust fan system. The problems with the existing hood structure are mainly reflected in:

[0004] 1. In order to achieve the requirements of waterproof and windproof, the top of the hood is closed, the side wall of the hood is provided with an air outlet, and a downward-sloping wind guide plate is provided on the side air outlet, so that the exhausted wind is discharged downwardly under the action of the wind guide plate. Figure 1 As shown. After the flue gas flows upward, it reaches the top of the hood, makes a sharp turn under the action of the closed top, and then tilts outward and downward to discharge the air. The smoke actually turns nearly 180 degrees inside the hood, which has a great impact on the top of the hood, causing high noise and high side outlet resistance, which significantly increases the overall resistance of the outdoor fan system and affects the overall smoke exhaust efficiency.

[0005] 2. The noise caused by airflow impact can be clearly heard in the kitchens of users on the lower floors, which affects the user experience;

[0006] 3. Because most areas are dominated by monsoon climate, the wind direction and intensity vary in different seasons. The existing hood outlet cannot be closed and cannot effectively prevent strong monsoon backflow;

[0007] 4. This type of air outlet structure cannot be fully enclosed. In winter nights, it is easy for the heat near the air outlet to be quickly carried away by the wind, affecting the lubrication of the outdoor fan (low temperature can easily lead to lubrication failure, large starting current, and then the fault protection cannot be started), and even freeze the entire outdoor fan, affecting the smoke exhaust use the next day. Summary of the invention

[0008] The first technical problem to be solved by the present invention is to provide an outdoor smoke exhaust structure of a building centralized smoke exhaust system that can actively open or close different side air outlets according to external environmental parameters in response to the above-mentioned prior art.

[0009] The second technical problem to be solved by the present invention is to provide a method for controlling the use of an outdoor smoke exhaust structure of a centralized smoke exhaust system of a building, which can actively open or close the air outlet according to the external environment, in response to the above-mentioned prior art.

[0010] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: an outdoor smoke exhaust structure of a centralized smoke exhaust system of a building, including an air outlet duct, the top of the air outlet duct is closed, and the side wall of the air outlet duct is provided with N air outlets facing different directions, N is a natural number greater than or equal to 2; it is characterized in that: each air outlet is provided with a wind shield that can open, block or close the corresponding air outlet, and a driving mechanism connected to the wind shield at the corresponding air outlet and used to drive the wind shield to open, block or close the corresponding air outlet, and also includes a detection element for detecting external environmental parameters, the N driving mechanisms and the detection elements are electrically connected to the control mechanism, and the control mechanism can control one of the driving mechanisms or a combination of any driving mechanisms according to the environmental parameters detected by the detection element, so as to control the corresponding wind shield to open, block or close the air outlet on the corresponding side; the environmental parameters include temperature and / or wind pressure.

[0011] Preferably, N=4, and four air outlets are evenly distributed on the side wall of the air outlet cylinder.

[0012] As an improvement, the upper sides of the N wind shields are respectively rotatably arranged on the upper parts of the corresponding air outlets, and the N driving mechanisms can respectively drive the corresponding wind shields to rotate and translate; the N wind shields can be in a horizontal state under the action of the corresponding driving mechanisms to open the air outlets on the corresponding sides; the N wind shields can also be in a vertical state in front of the air outlets on the corresponding sides under the action of the corresponding driving mechanisms to block the air outlets on the corresponding sides, and there are gaps between the N wind shields in the vertical state in front of the air outlets on the corresponding sides and the surrounding areas of the air outlets on the corresponding sides; the N wind shields can also be in a vertical state under the action of the corresponding driving mechanisms and completely close the air outlets on the corresponding sides.

[0013] Preferably, the N driving mechanisms are motors, and a transmission assembly with the same structure is arranged between the N driving mechanisms and the corresponding N windshields, the transmission assembly includes a main transmission rod, a slave transmission rod and a push rod, wherein the push rod includes a first push rod and a second push rod, the first push rod is vertical, the second push rod is "L"-shaped, and the second end of the first push rod is connected to the first end of the second push rod so that the entire push rod is in a "Z" shape; one end of the main transmission rod is connected to the output shaft of the motor, the other end of the main transmission rod is rotatably connected to one end of the slave transmission rod through a first rotating shaft, the other end of the slave transmission rod is connected to one end of the first push rod, and the second end of the second push rod is connected to the inner upper part of the windshield; a guide groove is provided on the inner wall of the corresponding side air outlet, the guide groove includes a first guide groove and a second guide groove, the first guide The groove is arranged horizontally, the second guide groove is arc-shaped, and is located below the first guide groove and is connected to the middle part of the first guide groove, so that the entire guide groove is roughly in a horizontally arranged "Y" shape; the first rotating shaft is movably arranged in the first guide groove and the second guide groove, and can slide in the first guide groove and the second guide groove; the connection between the second end of the first push rod and the first end of the second push rod is movably arranged in the first guide groove through the second rotating shaft, and the second rotating shaft can slide in the first guide groove; the motor drives the main transmission rod to rotate, thereby driving the slave transmission rod to rotate, and then promotes the translation or rotation of the push rod, and slides in the first guide groove and the second guide groove through the first rotating shaft, and the second rotating shaft slides in the first guide groove, so that the wind shield can open, block or close the air outlet on the corresponding side respectively.

[0014] As a further improvement, the detection element includes wind pressure sensors respectively arranged near the N air outlets for detecting the wind pressure at the air outlets on that side, and a temperature sensor for detecting the outdoor temperature.

[0015] The first technical solution adopted by the present invention to solve the above second technical problem is: a method for controlling the use of an outdoor smoke exhaust structure of a centralized smoke exhaust system of a building having the above structure, characterized in that it comprises the following steps:

[0016] Step 1: The control mechanism reads the detection data of N wind pressure sensors and temperature sensors;

[0017] Step 2: The control mechanism determines whether the wind pressure data detected by the N wind pressure sensors are all greater than the second preset pressure value P2. If yes, the process goes to step 3; if no, the process goes to step 4.

[0018] Step 3, the control mechanism determines whether the absolute value of the difference between any two wind pressure data among the N wind pressure data is less than the third preset pressure value ΔP. If so, it means that there is strong wind all around, and the control mechanism drives all N driving mechanisms to operate, so that the N wind shields are all in a vertical state in front of the air outlet, and the smoke is exhausted by using the gaps around the N wind shields and the corresponding air outlets, and then returns to step 1; if not, the control mechanism drives the driving mechanism in the N / 2 side directions with larger wind pressure data to operate, so that the N / 2 wind shields of this part are in a vertical state and completely close the corresponding side air outlet, and the control mechanism drives the driving mechanism in the N / 2 side directions with smaller wind pressure data to operate, so that the N / 2 wind shields of this part are in a vertical state, and the smoke is exhausted by using the gaps around the N / 2 wind shields and the corresponding side air outlets, and then returns to step 1;

[0019] Step 4, the control mechanism determines whether the wind pressure data detected by the N wind pressure sensors are all less than the first preset pressure value P1. If so, it means that there is no strong wind all around. The control mechanism drives all N driving mechanisms to operate, so that the N wind shields are all in a horizontal state so that all the air outlets are opened, and then returns to step 1; if not, the control mechanism drives the driving mechanisms in the N / 2 side directions with larger wind pressure data to operate, so that this part of the N / 2 wind shields is in a vertical state and completely closes the corresponding side air outlets. The control mechanism drives the driving mechanisms in the N / 2 side directions with smaller wind pressure data to operate, so that this part of the N / 2 wind shields is in a horizontal state, so that the corresponding side air outlets are opened, and then returns to step 1.

[0020] The second technical solution adopted by the present invention to solve the above second technical problem is: the control mechanism can also collect the parameters of the indoor unit startup status, and can control one of the driving mechanisms or a combination of any driving mechanisms according to the environmental parameters detected by the detection element and the parameters of the indoor unit startup status, so as to control the corresponding wind shield to open, block or close the air outlet on the corresponding side. The use control method of the outdoor smoke exhaust structure of the above building centralized smoke exhaust system is characterized by comprising the following steps:

[0021] Step 1', the control mechanism reads the detection data of N wind pressure sensors and temperature sensors, and collects the parameters of the indoor unit startup status;

[0022] Step 2', determine whether there is an indoor unit turned on, if yes, go to step 3', if not, go to step 6';

[0023] Step 3', the control mechanism determines whether the wind pressure data detected by the N wind pressure sensors are all greater than the second preset pressure value P2, if yes, proceed to step 4', if no, proceed to step 5';

[0024] Step 4', the control mechanism determines whether the absolute value of the difference between any two wind pressure data among the N wind pressure data is less than the third preset pressure value ΔP. If so, it means that there is strong wind all around, and the control mechanism drives all N driving mechanisms to operate, so that the N wind shields are all in a vertical state in front of the air outlet, and the smoke is exhausted by using the gaps around the N wind shields and the corresponding air outlets, and then returns to step 1'; if not, the control mechanism drives the driving mechanisms in the N / 2 side directions with larger wind pressure data to operate, so that the N / 2 wind shields of this part are in a vertical state and completely close the corresponding side air outlet, and the control mechanism drives the driving mechanisms in the N / 2 side directions with smaller wind pressure data to operate, so that the N / 2 wind shields of this part are in a vertical state, and the smoke is exhausted by using the gaps around the N / 2 wind shields and the corresponding side air outlets, and then returns to step 1';

[0025] Step 5', the control mechanism determines whether the wind pressure data detected by the N wind pressure sensors are all less than the first preset pressure value P1. If so, it means that there is no strong wind all around. The control mechanism drives all N driving mechanisms to operate, so that the N wind shields are all in a horizontal state so that all the air outlets are opened, and then returns to step 1'; if not, the control mechanism drives the driving mechanisms in the N / 2 side directions with larger wind pressure data to operate, so that the N / 2 wind shields in this part are in a vertical state and completely close the corresponding side air outlets, and the control mechanism drives the driving mechanisms in the N / 2 side directions with smaller wind pressure data to operate, so that the N / 2 wind shields in this part are in a horizontal state, so that the corresponding side air outlets are opened, and then returns to step 1';

[0026] Step 6', determine whether the outdoor temperature is lower than the preset temperature value. If so, the control mechanism drives all N driving mechanisms to operate, so that the N wind shields are in a vertical state and completely close the corresponding side air outlets, and then returns to step 1'; if not, the control mechanism drives the driving mechanisms in the N / 2 side directions with larger wind pressure data to operate, so that the N / 2 wind shields in this part are in a horizontal state to open the corresponding side air outlets, and the control mechanism drives the driving mechanisms in the N / 2 side directions with smaller wind pressure data to operate, so that the N / 2 wind shields in this part are in a vertical state and completely close the corresponding side air outlets, and then returns to step 1'.

[0027] Compared with the prior art, the advantages of the present invention are that it can actively open or close different side air outlets according to external environmental parameters, thereby improving user experience and reducing user complaints. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The figure is a schematic diagram of the outdoor smoke exhaust structure of a centralized smoke exhaust system for a building in the prior art.

[0029] Figure 2Schematic diagram of the structure of the outdoor smoke exhaust structure of the centralized smoke exhaust system for a building in an embodiment of the present invention (all air outlets are in an open state).

[0030] Figure 3 Schematic diagram of the structure of the outdoor smoke exhaust structure of the centralized smoke exhaust system for a building in an embodiment of the present invention (all air outlets are in a blocked state).

[0031] Figure 4 Schematic diagram of the structure of the outdoor smoke exhaust structure of the centralized smoke exhaust system for a building in an embodiment of the present invention (all air outlets are in a closed state).

[0032] Figure 5 This is a structural diagram of a transmission assembly with a windshield in an open state according to an embodiment of the present invention.

[0033] Figure 6 It is a structural diagram of the transmission assembly when the wind shield is in a shielding state in an embodiment of the present invention.

[0034] Figure 7 It is a structural diagram of the transmission assembly when the wind shield is in a closed state in an embodiment of the present invention.

[0035] Figure 8 It is a structural schematic diagram of the outdoor smoke exhaust structure of the centralized smoke exhaust system of a building in an embodiment of the present invention (two air outlets are closed and two air outlets are open).

[0036] Fig. 9 It is a structural schematic diagram of the outdoor smoke exhaust structure of the centralized smoke exhaust system of a building in an embodiment of the present invention (two air outlets are closed and two air outlets are open).

[0037] Fig.10 It is a structural schematic diagram of the outdoor smoke exhaust structure of the centralized smoke exhaust system of a building in an embodiment of the present invention (two air outlets are closed and two air outlets are blocked). DETAILED DESCRIPTION

[0038] The present invention is further described in detail below with reference to the accompanying drawings.

[0039] like Figure 2 , 34, comprises an air outlet 1 which is roughly in the shape of a rectangular parallelepiped, and an outdoor fan 2 is arranged below the air outlet 1; the top of the air outlet 1 is closed, and the four side walls of the air outlet 1 are respectively connected with air outlet pipes facing four different directions, and the end of each air outlet pipe is opened to form air outlets 11, 12, 13, and 14; of course, the air outlet 1 can also adopt other shapes, such as a cylindrical shape, and the number of air outlets can also be set to other numbers, as long as it is a natural number greater than or equal to 2, and different air outlets face different directions; the four air outlets 11, 12, 13, and 14 are each provided with a corresponding air outlet that can open The wind shields 31, 32, 33, 34 are opened, blocked or closed, and four driving mechanisms connected to the wind shields 31, 32, 33, 34 at the corresponding air outlets for driving the wind shields to open, block or close the corresponding air outlets. In addition, it also includes a detection element for detecting external environmental parameters. The four driving mechanisms and the detection elements are electrically connected to the control mechanism 5. The control mechanism 5 can control one of the driving mechanisms or a combination of any driving mechanisms according to the environmental parameters detected by the detection elements to control the corresponding wind shield to open, block or close the air outlet on the corresponding side; the environmental parameters include temperature and / or wind pressure.

[0040] In this embodiment, the upper sides of the four windshields 31, 32, 33, and 34 are rotatably arranged on the upper parts of the four air outlets 11, 12, 13, and 14, respectively, and the four driving mechanisms can respectively drive the corresponding windshields to rotate and translate; the four windshields can be in a horizontal state under the action of the corresponding driving mechanisms, thereby opening the air outlets on the corresponding sides, Figure 2 As shown; the four windshields can also be located in a vertical state in front of the corresponding side air outlet under the action of the corresponding driving mechanism to block the air outlet on the corresponding side, and there are gaps between the four windshields and the surroundings of the corresponding side air outlet when they are located in a vertical state in front of the corresponding side air outlet, and participate in Figure 3 As shown; the four windshields can also be in a vertical state under the action of the corresponding driving mechanism and completely close the corresponding side air outlets, Figure 4 shown.

[0041] The four driving mechanisms are all motors (not shown in the figure), and a transmission assembly with the same structure is arranged between the four motors and the corresponding four windshields 31, 32, 33, and 34. The transmission assembly includes a main transmission rod 41, a slave transmission rod 42, and a push rod 43, wherein the push rod 43 includes a first push rod 431 and a second push rod 432, wherein the first push rod 431 is vertical, and the second push rod 432 is "L" shaped, and the second end of the first push rod 431 is connected to the first end of the second push rod 432 so that the entire push rod 43 is "Z" shaped; the main transmission rod 3 One end of the main transmission rod 32 is connected to the output shaft of the motor, the other end of the main transmission rod 32 is rotatably connected to one end of the slave transmission rod 42 through the first rotating shaft 44, the other end of the slave transmission rod 42 is connected to one end of the first push rod 431, and the second end of the second push rod 432 is connected to the inner upper part of the wind shield; a guide groove 45 is provided on the inner wall of the corresponding side air outlet, and the guide groove 45 includes a first guide groove 451 and a second guide groove 452. The first guide groove 451 is arranged horizontally, and the second guide groove 452 is arc-shaped, preferably 1 / 4 of the circumference, and is located at the first guide groove. The first guide groove 451 is connected to the middle of the first guide groove 451, so that the entire guide groove 45 is roughly in a "Y" shape arranged horizontally; the first rotating shaft 44 is movably arranged in the first guide groove 451 and the second guide groove 452, and can slide in the first guide groove 451 and the second guide groove 452; the connection between the second end of the first push rod 431 and the first end of the second push rod 432 is movably arranged in the first guide groove 451 through the second rotating shaft 46, and the second rotating shaft 46 can slide in the first guide groove 451; the motor drives the main transmission The rod 41 rotates, thereby driving the transmission rod 42 to rotate, thereby pushing the push rod 43 to translate or rotate, and the first rotating shaft 44 slides in the first guide groove 451 and the second guide groove 452, and the second rotating shaft 46 slides in the first guide groove 451, so that the wind shield plate can open, block or close the air outlet on the corresponding side respectively; specifically, when the second rotating shaft 46 is located at the front side of the first guide groove 451 and the first rotating shaft 44 is located at the top end of the second guide groove 452, it is in a horizontal state, so that the air outlet on the corresponding side is opened, and the wind shield plate can open, block or close the air outlet on the corresponding side respectively. Figure 5 As shown; when the second rotating shaft 46 is still located at the frontmost side of the first guide groove 451, and the first rotating shaft 44 slides to the middle of the first guide groove 451 (i.e., the connecting part of the first guide groove 451 and the second guide groove 452), the wind shield is located in front of the air outlet and becomes vertical, and there is a gap between the wind shield and the surrounding of the air outlet on the corresponding side. At this time, the wind shield blocks the air outlet on the corresponding side. Figure 6 When the first shaft 44 slides to the rear of the first guide groove 451, the second shaft 46 slides to the middle of the first guide groove 451, the windshield is still in a vertical state and completely closes the corresponding side air outlet, Figure 7 shown.

[0042] The detection element includes wind pressure sensors 51, 52, 53, 54 respectively arranged near the four air outlets for detecting the wind pressure at the side air outlets, and a temperature sensor 55 for detecting the outdoor temperature.

[0043] The method for controlling the use of the outdoor smoke exhaust structure of the above-mentioned building centralized smoke exhaust system comprises the following steps:

[0044] Step 1: The control mechanism reads the detection data of four wind pressure sensors and a temperature sensor;

[0045] Step 2: The control mechanism determines whether the wind pressure data detected by the four wind pressure sensors are all greater than the second preset pressure value P2. If yes, the control mechanism proceeds to step 3; if not, the control mechanism proceeds to step 4. The value of the second preset pressure value P2 can be obtained in advance based on experiments or experience.

[0046] Step 3: The control mechanism determines whether the absolute value of the difference between any two of the four wind pressure data is less than the third preset pressure value ΔP. If so, it means that there is strong wind all around. The control mechanism drives all four driving mechanisms to operate, so that the four wind shields are in a vertical state in front of the air outlet, and smoke is exhausted by using the gaps around the four wind shields and the corresponding air outlets. Figure 3 As shown, then return to step 1; if not, the control mechanism drives the driving mechanisms on the two sides with larger wind pressure data to move, so that the two wind shields are in a vertical state and completely close the corresponding side air outlets, and the control mechanism drives the driving mechanisms on the two sides with smaller wind pressure data to move, so that the two wind shields are in a vertical state, and the gaps around the two wind shields and the corresponding side air outlets are used to exhaust smoke, and participate in Fig.10 As shown, then return to step 1;

[0047] Step 4: The control mechanism determines whether the wind pressure data detected by the four wind pressure sensors are all less than the first preset pressure value P1. If so, it means that there is no strong wind around. The control mechanism drives all four driving mechanisms to operate, so that the four wind shields are in a horizontal state, thereby opening all the air outlets. Figure 2 As shown, then return to step 1; if not, the control mechanism drives the driving mechanisms in the two sides with larger wind pressure data to move, so that the two wind shields are in a vertical state and completely close the corresponding side air outlets, and the control mechanism drives the driving mechanisms in the two sides with smaller wind pressure data to move, so that the two wind shields are in a horizontal state, so that the corresponding side air outlets are opened, and participate in Figure 8 or 9, and then return to step 1.

[0048] In another embodiment, the control mechanism can also collect the power-on condition parameters of the indoor unit, and can control one of the driving mechanisms or a combination of any driving mechanisms according to the environmental parameters detected by the detection element and the power-on condition parameters of the indoor unit, so as to control the corresponding wind shield to open, block or close the air outlet on the corresponding side, specifically including the following steps:

[0049] Step 1', the control mechanism reads the detection data of four wind pressure sensors and temperature sensors, and collects the parameters of the indoor unit startup status;

[0050] Step 2', determine whether there is an indoor unit turned on, if yes, go to step 3', if not, go to step 6';

[0051] Step 3', the control mechanism determines whether the wind pressure data detected by the four wind pressure sensors are all greater than the second preset pressure value P2, if yes, proceed to step 4', if no, proceed to step 5';

[0052] Step 4', the control mechanism determines whether the absolute value of the difference between any two of the four wind pressure data is less than the third preset pressure value ΔP. If so, it means that there is strong wind all around. The control mechanism drives all four driving mechanisms to operate, so that the four wind shields are in a vertical state in front of the air outlet, and smoke is exhausted by using the gaps around the four wind shields and the corresponding air outlets. Figure 3 As shown, then return to step 1'; if not, the control mechanism drives the driving mechanisms on the two sides with larger wind pressure data to move, so that the two wind shields are in a vertical state and completely close the corresponding side air outlets, and the control mechanism drives the driving mechanisms on the two sides with smaller wind pressure data to move, so that the two wind shields are in a vertical state, and the gaps around the two wind shields and the corresponding side air outlets are used to exhaust smoke, and participate in Fig.10 As shown, then return to step 1';

[0053] Step 5', the control mechanism determines whether the wind pressure data detected by the four wind pressure sensors are all less than the first preset pressure value P1. If so, it means that there is no strong wind around. The control mechanism drives all four driving mechanisms to operate, so that the four wind shields are in a horizontal state so that all the air outlets are opened. Figure 2 As shown, then return to step 1'; if not, the control mechanism drives the driving mechanisms in the two sides with larger wind pressure data to move, so that the two wind shields are in a vertical state and completely close the corresponding side air outlets, and the control mechanism drives the driving mechanisms in the two sides with smaller wind pressure data to move, so that the two wind shields are in a horizontal state, so that the corresponding side air outlets are opened, and participate in Figure 8 or 9, and then return to step 1';

[0054] Step 6', determine whether the outdoor temperature is lower than the preset temperature value, if so, the control mechanism drives all four drive mechanisms to operate, so that the four windshields are in a vertical state and completely close the corresponding side air outlets, and participate in Figure 4 As shown, then return to step 1'; if not, the control mechanism drives the driving mechanisms on the two sides with larger wind pressure data to move, so that the two wind shields are in a horizontal state, thereby opening the corresponding side air outlets, and the control mechanism drives the driving mechanisms on the two sides with smaller wind pressure data to move, so that the two wind shields are both in a vertical state and completely close the corresponding side air outlets, and participate in Figure 8 or 9, and then return to step 1'.

[0055] In this embodiment, the air outlets in different directions can be actively opened or closed according to the outside temperature, air pressure in different directions and the power on / off status of the indoor unit, and can be completely closed in a low-temperature environment where no one is using the unit, so as to protect the fan, improve the user experience and reduce user complaints.

Claims

1. An outdoor smoke exhaust structure of a centralized smoke exhaust system of a building, comprising an air outlet duct, the top of which is closed, and the side wall of which is provided with N air outlets facing different directions, where N is a natural number greater than or equal to 2; characterized in that: Each air outlet is provided with a windshield capable of opening, blocking or closing the corresponding air outlet, and a driving mechanism connected to the windshield at the corresponding air outlet and used to drive the windshield to open, block or close the corresponding air outlet. In addition, it also includes a detection element for detecting external environmental parameters. The N driving mechanisms and the detection elements are electrically connected to the control mechanism. The control mechanism can control one of the driving mechanisms or a combination of any driving mechanisms according to the environmental parameters detected by the detection elements to control the corresponding windshield to open, block or close the air outlet on the corresponding side; the environmental parameters include temperature and / or wind pressure; the upper sides of the N windshields are respectively rotatably arranged on the upper part of the corresponding air outlet, and the N driving mechanisms can respectively drive the corresponding windshields to rotate and translate; The N windshields can be in a horizontal state under the action of the corresponding driving mechanisms so as to open the air outlets on the corresponding sides; The N wind shields can also be located in a vertical state in front of the corresponding side air outlets under the action of the corresponding driving mechanisms, thereby blocking the air outlets on the corresponding sides, and there are gaps between the N wind shields in the vertical state located in front of the corresponding side air outlets and the surrounding areas of the corresponding side air outlets; the N wind shields can also be in a vertical state under the action of the corresponding driving mechanisms and completely close the corresponding side air outlets; the N driving mechanisms are motors, and transmission components with the same structure are arranged between the N driving mechanisms and the corresponding N wind shields, and the transmission component includes a main transmission rod, a slave transmission rod and a push rod, wherein the push rod includes a first push rod and a second push rod, the first push rod is vertical, the second push rod is "L"-shaped, and the second end of the first push rod is connected to the first end of the second push rod so that the entire push rod is "Z"-shaped; one end of the main transmission rod is connected to the output shaft of the motor, and the other end of the main transmission rod is rotationally connected to one end of the slave transmission rod through a first rotating shaft, and the other end of the slave transmission rod is connected to one end of the first push rod The second end of the second push rod is connected to the inner upper part of the wind shield plate; a guide groove is provided on the inner wall of the corresponding side air outlet, and the guide groove includes a first guide groove and a second guide groove. The first guide groove is arranged horizontally, and the second guide groove is arc-shaped and is located below the first guide groove and is connected to the middle of the first guide groove, so that the entire guide groove is roughly in a horizontally arranged "Y" shape; the first rotating shaft is movably arranged in the first guide groove and the second guide groove, and can slide in the first guide groove and the second guide groove; the connection between the second end of the first push rod and the first end of the second push rod is movably arranged in the first guide groove through the second rotating shaft, and the second rotating shaft can slide in the first guide groove; the motor drives the main transmission rod to rotate, thereby driving the slave transmission rod to rotate, and then promotes the translation or rotation of the push rod, and slides in the first guide groove and the second guide groove through the first rotating shaft, and the second rotating shaft slides in the first guide groove, so that the wind shield plate can open, block or close the air outlet on the corresponding side respectively.

2. The outdoor smoke exhaust structure of the building centralized smoke exhaust system according to claim 1 is characterized in that: The N=4, and the four air outlets are evenly distributed on the side wall of the air outlet cylinder.

3. The outdoor smoke exhaust structure of the building centralized smoke exhaust system according to claim 1 is characterized in that: The detection element includes wind pressure sensors respectively arranged near the N air outlets for detecting the wind pressure at the side air outlets, and a temperature sensor for detecting the outdoor temperature.

4. The outdoor smoke exhaust structure of the building centralized smoke exhaust system according to claim 3 is characterized in that: The control mechanism can also collect the indoor unit startup status parameters, and can control one of the driving mechanisms or a combination of any driving mechanisms according to the environmental parameters detected by the detection element and the indoor unit startup status parameters, so as to control the corresponding wind shield to open, block or close the air outlet on the corresponding side.

5. A method for controlling the use of an outdoor smoke exhaust structure of a centralized smoke exhaust system of a building as claimed in claim 3, characterized in that The steps include: Step 1: The control mechanism reads the detection data of N wind pressure sensors and temperature sensors; Step 2: The control mechanism determines whether the wind pressure data detected by the N wind pressure sensors are all greater than the second preset pressure value P2. If yes, the process goes to step 3; if no, the process goes to step 4. Step 3, the control mechanism determines whether the absolute value of the difference between any two wind pressure data among the N wind pressure data is less than the third preset pressure value ΔP. If so, it means that there is strong wind all around, and the control mechanism drives all N driving mechanisms to operate, so that the N wind shields are all in a vertical state in front of the air outlet, and the smoke is exhausted by using the gaps around the N wind shields and the corresponding air outlets, and then returns to step 1; if not, the control mechanism drives the driving mechanism in the N / 2 side directions with larger wind pressure data to operate, so that the N / 2 wind shields of this part are in a vertical state and completely close the corresponding side air outlet, and the control mechanism drives the driving mechanism in the N / 2 side directions with smaller wind pressure data to operate, so that the N / 2 wind shields of this part are in a vertical state, and the smoke is exhausted by using the gaps around the N / 2 wind shields and the corresponding side air outlets, and then returns to step 1; Step 4, the control mechanism determines whether the wind pressure data detected by the N wind pressure sensors are all less than the first preset pressure value P1. If so, it means that there is no strong wind all around. The control mechanism drives all N driving mechanisms to operate, so that the N wind shields are all in a horizontal state so that all the air outlets are opened, and then returns to step 1; if not, the control mechanism drives the driving mechanisms in the N / 2 side directions with larger wind pressure data to operate, so that this part of the N / 2 wind shields is in a vertical state and completely closes the corresponding side air outlets. The control mechanism drives the driving mechanisms in the N / 2 side directions with smaller wind pressure data to operate, so that this part of the N / 2 wind shields is in a horizontal state, so that the corresponding side air outlets are opened, and then returns to step 1.

6. A method for controlling the use of an outdoor smoke exhaust structure of a centralized smoke exhaust system for a building as claimed in claim 4, characterized in that The steps include: Step 1', the control mechanism reads the detection data of N wind pressure sensors and temperature sensors, and collects the parameters of the indoor unit startup status; Step 2', determine whether there is an indoor unit turned on, if yes, go to step 3', if not, go to step 6'; Step 3', the control mechanism determines whether the wind pressure data detected by the N wind pressure sensors are all greater than the second preset pressure value P2, if yes, proceed to step 4', if no, proceed to step 5'; Step 4', the control mechanism determines whether the absolute value of the difference between any two wind pressure data among the N wind pressure data is less than the third preset pressure value ΔP. If so, it means that there is strong wind all around, and the control mechanism drives all N driving mechanisms to operate, so that the N wind shields are all in a vertical state in front of the air outlet, and the smoke is exhausted by using the gaps around the N wind shields and the corresponding air outlets, and then returns to step 1'; if not, the control mechanism drives the driving mechanisms in the N / 2 side directions with larger wind pressure data to operate, so that the N / 2 wind shields of this part are in a vertical state and completely close the corresponding side air outlet, and the control mechanism drives the driving mechanisms in the N / 2 side directions with smaller wind pressure data to operate, so that the N / 2 wind shields of this part are in a vertical state, and the smoke is exhausted by using the gaps around the N / 2 wind shields and the corresponding side air outlets, and then returns to step 1'; Step 5', the control mechanism determines whether the wind pressure data detected by the N wind pressure sensors are all less than the first preset pressure value P1. If so, it means that there is no strong wind all around. The control mechanism drives all N driving mechanisms to operate, so that the N wind shields are all in a horizontal state so that all the air outlets are opened, and then returns to step 1'; if not, the control mechanism drives the driving mechanisms in the N / 2 side directions with larger wind pressure data to operate, so that the N / 2 wind shields in this part are in a vertical state and completely close the corresponding side air outlets, and the control mechanism drives the driving mechanisms in the N / 2 side directions with smaller wind pressure data to operate, so that the N / 2 wind shields in this part are in a horizontal state, so that the corresponding side air outlets are opened, and then returns to step 1'; Step 6', determine whether the outdoor temperature is lower than the preset temperature value. If so, the control mechanism drives all N driving mechanisms to operate, so that the N wind shields are in a vertical state and completely close the corresponding side air outlets, and then returns to step 1'; if not, the control mechanism drives the driving mechanisms in the N / 2 side directions with larger wind pressure data to operate, so that the N / 2 wind shields in this part are in a horizontal state to open the corresponding side air outlets, and the control mechanism drives the driving mechanisms in the N / 2 side directions with smaller wind pressure data to operate, so that the N / 2 wind shields in this part are in a vertical state and completely close the corresponding side air outlets, and then returns to step 1'.

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