Digital broadcast television transmitting base station
By installing real-time temperature sensors and independent airflow regulation mechanisms inside the enclosure of digital broadcast television base stations, the problems of uneven temperature and low airflow regulation accuracy have been solved, achieving efficient temperature control and dust purification of the equipment, extending equipment life and reducing maintenance complexity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-19
- Publication Date
- 2026-03-13
AI Technical Summary
Digital broadcast television base stations suffer from problems such as uneven temperature leading to equipment failure, low airflow regulation accuracy, and high design complexity.
It employs real-time temperature sensors arranged in left and right sections within the enclosure, along with an independent airflow adjustment mechanism. A geared motor drives a rotating disc to control the overlapping area of the air outlets, enabling precise zoned temperature adjustment and dynamic airflow regulation.
Ensure that core equipment operates in a suitable temperature environment, reduce dust accumulation, lower the probability of equipment failure, and simplify equipment design and maintenance complexity.
Smart Images
Figure CN121664944A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a digital broadcast television transmission base station, belonging to the field of transmission base station installation technology. Background Technology
[0002] Digital broadcast television base stations are core outdoor equipment in the digital broadcast television signal transmission link. Their main purpose is to amplify and transmit digital broadcast television signals. They can be deployed in different geographical locations according to the planned coverage area to supplement signal coverage blind spots or enhance signal strength in urban, rural, and remote areas, ensuring the stability of signal reception within the area. For example, they can be deployed in mountainous areas and urban-rural fringe areas to solve the problem of weak or unreceived signals in these areas.
[0003] The transmitter is the core of signal generation and amplification; the transmitting antenna is crucial for energy conversion and radiation; the feeder is the energy transmission channel between the two; and the transmission tower provides the physical support for improved coverage. Current technology is not comprehensive and has the following drawbacks: 1. Uneven temperature distribution in different areas of the transmitter enclosure of a digital broadcast television base station makes core equipment prone to malfunction or performance degradation due to high temperatures; existing temperature control cannot achieve precise zoned adjustment. 2. Air entering the base station enclosure contains dust and other impurities, which easily adhere to the equipment surface, leading to wear, increased probability of malfunction, and shortened lifespan of core equipment. 3. Existing airflow regulation structures have low adjustment accuracy and unstable processes; furthermore, the design of airflow regulation mechanisms varies greatly in different areas, increasing the complexity of equipment design and maintenance.
[0004] To solve one of the above problems, there is an urgent need for a digital broadcast television transmission base station. Summary of the Invention
[0005] Based on the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to achieve precise zoned control of the temperature of the left and right halves of the transmitter housing mounting cavity by using real-time temperature sensors set in the left and right partitions inside the housing, in conjunction with an independent airflow adjustment mechanism, and thus providing a digital broadcast television transmission base station.
[0006] The digital broadcast television transmission base station of the present invention includes an indoor transmitter enclosure and an outdoor transmission tower. The transmitter enclosure houses a television broadcast transmission host, and the transmission tower is equipped with a transmitting antenna. The transmitter enclosure features a closable front door, which is installed on an opening on the front side of the enclosure. A horizontal partition plate is provided on the upper inner side of the transmitter enclosure, dividing the interior into a gas buffer chamber and an installation chamber. A top ventilation inlet connecting the gas buffer chamber and the installation chamber is located in the middle of the horizontal partition plate, and a chamber for supplying air to the installation chamber is installed on the top ventilation inlet. The transmitter housing has a chamber air supply turbine fan. The upper part of the transmitter housing has a left-side air inlet and a right-side air inlet connected to a gas buffer chamber on both sides. A set of pre-filters for dust removal is installed inside the left-side and right-side air inlets. The bottom of the transmitter housing has a left-side air outlet and a right-side air outlet connected to the mounting cavity on both sides. A first airflow regulating mechanism for controlling the airflow at the left-side air inlet and left-side air outlet is installed on the left-side wall panel of the transmitter housing. A second airflow regulating mechanism for controlling the airflow at the right-side air inlet and right-side air outlet is installed on the right-side wall panel of the transmitter housing.
[0007] In any of the above schemes, it is preferred that the air intake volume of the left air inlet of the chamber is the same as the air outlet volume of the left ventilation outlet.
[0008] Preferably, in any of the above embodiments, the first airflow adjustment mechanism includes a first geared motor fixed to the inner wall of the transmitter housing. The power output shaft of the first geared motor passes through the transmitter housing and is fitted with a first drive rod. A first push-pull drive linkage and a second push-pull drive linkage are respectively hinged to both ends of the first drive rod. The mechanism also includes a first rotating disk and a second rotating disk. The first rotating disk is rotatably mounted on a first pin, which is fixed to the outer wall of the transmitter housing. The first rotating disk is in contact with the outer wall of the transmitter housing. The first rotating disk has an opening... Multiple sets of elliptical air vents A are provided, arranged around the same rotation center line with adjacent vents having equal included angles. The air inlet on the left side of the chamber includes multiple sets of elliptical air vents C corresponding one-to-one with the elliptical air vents A, arranged around the same rotation center line with adjacent vents having equal included angles. By rotating the first rotating disk, the overlapping area of the elliptical air vents A and C is controlled, thereby controlling the air volume. The upper end of the first push-pull drive linkage is hinged to the eccentric rotating shaft A on the edge of the first rotating disk, and the first rotating disk is driven to rotate by the first reduction motor. The second rotating disk is rotatably mounted on the second pin, which is fixed to the outer wall of the transmitter housing. The second rotating disk is in close contact with the outer wall of the transmitter housing. The second rotating disk has multiple sets of elliptical air vents B, which are arranged around the same rotation center line and the included angle between adjacent vents is equal. The air inlet on the right side of the chamber includes multiple sets of elliptical air vents D that correspond one-to-one with the elliptical air vents B. The multiple sets of elliptical air vents D are arranged around the same rotation center line and the included angle between adjacent vents is equal. By rotating the second rotating disk, the overlapping area of the elliptical air vents B and the air inlet on the right side of the chamber is controlled, thereby controlling the air volume. The upper end of the second push-pull drive linkage is hinged to the eccentric rotating shaft B on the edge of the second rotating disk, and the first rotating disk is driven to rotate by the first reduction motor. The first geared motor is controlled to rotate forward. The power output shaft of the first geared motor is fixed to the middle of the first drive rod. The first geared motor drives the first drive rod to rotate. The two ends of the first drive rod pull the first push-pull drive linkage and the second push-pull drive linkage respectively. The first push-pull drive linkage and the second push-pull drive linkage respectively drive the first rotating disk and the second rotating disk to rotate around the first pin and the second pin, thereby controlling the overlap area of the elliptical air outlet A and the left air inlet of the chamber to increase, and the overlap area of the elliptical air outlet B and the right air inlet of the chamber to increase, thereby controlling the air volume of the left air inlet and the right air inlet of the chamber to increase. Conversely, controlling the first geared motor to rotate in reverse can reduce the air volume of the left air inlet and the right air inlet of the chamber, which will not be elaborated further.
[0009] In any of the above schemes, it is preferred that there are four sets of multiple elliptical air outlets A, all of which are elliptical and arranged around the rotation center line of the first pin shaft, with the included angle between adjacent ones being 90 degrees.
[0010] In any of the above schemes, it is preferred that there are four sets of multiple elliptical air outlets B, all of which are elliptical and arranged around the rotation center line of the second pin shaft, with the included angle between adjacent ones being 90 degrees.
[0011] In any of the above schemes, it is preferred that the air intake volume of the right air inlet of the chamber is the same as the air outlet volume of the right ventilation outlet.
[0012] In any of the above solutions, it is preferred that the second airflow regulating mechanism and the first airflow regulating mechanism have the same structure and the same principle.
[0013] In any of the above solutions, it is preferred that the pre-purification air intake filter is a HEPA filter or other existing air filter, and is detachably installed on the left air intake or the right air intake of the chamber.
[0014] In any of the above embodiments, it is preferred that real-time temperature sensors A and B are respectively installed on the inner walls of both sides of the mounting cavity. Real-time temperature sensors A and B are electrically connected to the signal input terminals of the linkage control controller. The first geared motor and the second geared drive motor of the second airflow regulating mechanism are electrically connected to the signal output terminals of the linkage control controller. Real-time temperature sensor A detects temperature changes in the left half of the transmitter housing and controls the forward and reverse rotation of the first geared motor via the linkage control controller to control the airflow at the left air inlet and left ventilation outlet of the chamber. Real-time temperature sensor B detects temperature changes in the right half of the transmitter housing and controls the forward and reverse rotation of the second geared drive motor via the linkage control controller to control the airflow at the right air inlet and right ventilation outlet of the chamber, thus achieving zoned temperature control.
[0015] In any of the above embodiments, it is preferred that an emergency fire extinguisher is fixed in the fire extinguisher mounting cavity at the bottom of the transmitter housing, and the jet pipe of the emergency fire extinguisher extends through the outer shell of the transmitter housing to the upper inner part of the mounting cavity.
[0016] Compared with the prior art, the present invention has the following beneficial effects: The digital broadcast television base station described in this invention uses real-time temperature sensors arranged in the left and right sections of the housing, along with an independent airflow adjustment mechanism, to achieve precise temperature control of the left and right halves of the transmitter housing mounting cavity. The airflow at the corresponding air inlets and outlets can be dynamically adjusted according to temperature changes in different areas, ensuring that core equipment such as the television broadcast transmitter is always in a suitable operating temperature environment, effectively avoiding equipment failure or performance degradation caused by high temperatures.
[0017] The digital broadcast television transmission base station of the present invention is equipped with a pre-purification air intake filter on the inner side of the left and right air intakes of the chamber. This filter can effectively remove dust and purify the air entering the gas buffer chamber, reduce dust and other impurities from entering the installation chamber and adhering to the equipment surface, reduce equipment wear and failure probability, and extend the service life of the core equipment.
[0018] The digital broadcast television base station described in this invention adopts a geared motor-driven rotating disk airflow adjustment structure. The rotating disk is precisely rotated through linkage transmission, thereby controlling the overlapping area of the air outlets to adjust the airflow. The adjustment process is stable and controllable. Furthermore, the second inlet and outlet airflow adjustment mechanism has the same structure and principle as the first inlet and outlet airflow adjustment mechanism, which reduces the complexity of equipment design and maintenance. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the transmitter housing of the present invention; Figure 3 This is a structural diagram of the first inlet and outlet air volume regulating mechanism; Figure 4 This is a structural diagram of the air inlet on the left side of the chamber.
[0021] In the diagram: 1. Transmitter housing; 2. Openable front door; 3. Horizontal partition plate of the housing; 4. Left side air inlet of the chamber; 5. Right side air inlet of the chamber; 6. Chamber air supply turbine fan; 7. Top air exchange inlet; 8. Pre-filter; 9. Left side air exchange outlet; 10. Right side air exchange outlet; 11. Emergency fire extinguisher; 12. Real-time temperature sensor A; 13. Real-time temperature sensor B; 14. Linkage control controller; 15. Emergency smoke sensor; 16. First geared motor; 17. First drive rod; 18. First push-pull drive linkage; 19. Second push-pull drive linkage; 20. First rotating disk; 21. Elliptical air outlet A; 22. Second rotating disk; 23. Elliptical air outlet B; 24. Television broadcasting transmitter host; 25. Transmission tower; 26. Transmission antenna. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings. The present invention will be further illustrated by specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0023] Example 1, such as Figure 1-2As shown, a digital broadcast television transmission base station includes an indoor transmitter housing 1 and an outdoor transmission tower 25. The transmitter housing 1 houses a television broadcast transmission host 24, and the transmission tower 25 is equipped with a transmitting antenna 26. The transmitter housing 1 has a closable front door 2, which is installed on the opening at the front of the transmitter housing 1. A horizontal partition 3 is provided on the upper inner side of the transmitter housing 1, dividing the interior of the transmitter housing 1 into a gas buffer chamber and an installation chamber. A top ventilation inlet 7, connecting the gas buffer chamber and the installation chamber, is provided in the middle of the horizontal partition 3. The top ventilation inlet 7 is installed on the installation chamber. The transmitter housing 1 has a gas supply chamber air turbine fan 6. The upper part of the transmitter housing 1 has a left air inlet 4 and a right air inlet 5 connected to the gas buffer chamber. The inner sides of the left air inlet 4 and the right air inlet 5 are respectively provided with a set of pre-purification air intake filters 8 for dust removal. The bottom of the transmitter housing 1 has a left air outlet 9 and a right air outlet 10 connected to the installation chamber. The left wall of the transmitter housing 1 is equipped with a first air volume adjustment mechanism to control the air volume of the left air inlet 4 and the left air outlet 9. The right wall of the transmitter housing 1 is equipped with a second air volume adjustment mechanism to control the air volume of the right air inlet 5 and the right air outlet 10.
[0024] After the chamber air supply turbine fan 6 is turned on, outside air enters the gas buffer chamber through the left air inlet 4 and the right air inlet 5 of the chamber. After being filtered by the pre-purification air intake filter 8, it is then supplied to the mounting chamber by the chamber air supply turbine fan 6 and the top air exchange inlet 7 to achieve the purpose of cooling the components inside the mounting chamber. Excess air in the mounting chamber is discharged through the left air exchange outlet 9 and the right air exchange outlet 10. The chamber air supply turbine fan 6 continuously supplies the mounting chamber with clean air treated by the pre-purification air intake filter 8, which can always maintain a slight positive pressure inside the mounting chamber and prevent dust from the outside of the transmitter housing 1 from entering the mounting chamber through the gaps in the transmitter housing 1, thus ensuring the cleanliness inside the transmitter housing 1.
[0025] Secondly, the air intake volume of the left-side air inlet 4 and the left-side air outlet 9 of the chamber is regulated by a first air intake / outlet volume regulating mechanism, while the air intake volume of the right-side air inlet 5 and the right-side air outlet 10 of the chamber is regulated by a second air intake / outlet volume regulating mechanism. Because the installation position of the heat-generating components is uncertain, if the temperature on the left side of the installation chamber is high, the ventilation volume of the left-side air inlet 4 and the left-side air outlet 9 can be increased through the first air intake / outlet volume regulating mechanism, while the ventilation volume of the right-side air inlet 5 and the right-side air outlet 10 can be decreased through the second air intake / outlet volume regulating mechanism. Similarly, if the temperature on the right side of the installation chamber is high, the ventilation volume of the left-side air inlet 4 and the left-side air outlet 9 can be decreased through the first air intake / outlet volume regulating mechanism, while the ventilation volume of the right-side air inlet 5 and the right-side air outlet 10 can be increased through the second air intake / outlet volume regulating mechanism. This achieves zoned temperature control within the installation chamber, enabling rapid cooling of the high-temperature heating area.
[0026] Example 2, as Figure 1-4 As shown, a digital broadcast television transmission base station includes an indoor transmitter housing 1 and an outdoor transmission tower 25. The transmitter housing 1 houses a television broadcast transmission host 24, and the transmission tower 25 is equipped with a transmitting antenna 26. The transmitter housing 1 has a closable front door 2, which is installed on the opening at the front of the transmitter housing 1. A horizontal partition 3 is provided on the upper inner side of the transmitter housing 1, dividing the interior of the transmitter housing 1 into a gas buffer chamber and an installation chamber. A top ventilation inlet 7, connecting the gas buffer chamber and the installation chamber, is provided in the middle of the horizontal partition 3. The top ventilation inlet 7 is installed on the installation chamber. The transmitter housing 1 has a gas supply chamber air turbine fan 6. The upper part of the transmitter housing 1 has a left air inlet 4 and a right air inlet 5 connected to the gas buffer chamber. The inner sides of the left air inlet 4 and the right air inlet 5 are respectively provided with a set of pre-purification air intake filters 8 for dust removal. The bottom of the transmitter housing 1 has a left air outlet 9 and a right air outlet 10 connected to the installation chamber. The left wall of the transmitter housing 1 is equipped with a first air volume adjustment mechanism to control the air volume of the left air inlet 4 and the left air outlet 9. The right wall of the transmitter housing 1 is equipped with a second air volume adjustment mechanism to control the air volume of the right air inlet 5 and the right air outlet 10.
[0027] Furthermore, the air intake volume of the left air inlet 4 of the chamber is consistent with the air outlet volume of the left air exchange outlet 9. Further, the first air intake / exhaust volume adjustment mechanism includes a first reduction motor 16 fixed to the inner wall of the transmitter housing 1. The power output shaft of the first reduction motor 16 passes through the transmitter housing 1 and is fitted with a first drive rod 17. The two ends of the first drive rod 17 are respectively hinged to a first push-pull drive link 18 and a second push-pull drive link 19. It also includes a first rotating disk 20 and a second rotating disk 22. The first rotating disk 20 is rotatably mounted on a first pin, which is fixed to the outer wall of the transmitter housing 1. The first rotating disk 20 is in contact with the outer wall of the transmitter housing 1. The first rotating disk 20 has an opening... Multiple sets of elliptical air vents A21 are provided, arranged around the same rotation center line with adjacent vents having equal included angles. The air inlet 4 on the left side of the chamber includes multiple sets of elliptical air vents C corresponding one-to-one with the elliptical air vents A21, arranged around the same rotation center line with adjacent vents having equal included angles. By rotating the first rotating disk 20, the overlapping area of the elliptical air vents A21 and elliptical air vents C is controlled, thereby controlling the air volume. The upper end of the first push-pull drive linkage 18 is hinged to the eccentric rotating shaft A on the edge of the first rotating disk 20, and the first rotating disk 20 is driven to rotate by the first reduction motor 16. The second rotating disk 22 is rotatably mounted on the second pin shaft, which is fixed to the outer wall of the transmitter housing 1. The second rotating disk 22 is in close contact with the outer wall of the transmitter housing 1. The second rotating disk 22 has multiple sets of elliptical air vents B23. The multiple sets of elliptical air vents B23 are arranged around the same rotation center line and the included angle between adjacent ones is equal. The air inlet 5 on the right side of the chamber includes multiple sets of elliptical air vents D that correspond one-to-one with the elliptical air vents B23. The multiple sets of elliptical air vents D are arranged around the same rotation center line and the included angle between adjacent ones is equal. By rotating the second rotating disk 22, the overlapping area of the elliptical air vents B23 and the air inlet 5 on the right side of the chamber is controlled, thereby controlling the air volume. The upper end of the second push-pull drive linkage 19 is hinged to the eccentric rotating shaft B on the edge of the second rotating disk 22, and the first rotating disk 20 is driven to rotate by the first reduction motor 16.
[0028] The first geared motor 16 is controlled to rotate forward. The power output shaft of the first geared motor 16 is fixed to the middle of the first drive rod 17. The first geared motor 16 drives the first drive rod 17 to rotate. The two ends of the first drive rod 17 pull the first push-pull drive linkage 18 and the second push-pull drive linkage 19 respectively. The first push-pull drive linkage 18 and the second push-pull drive linkage 19 respectively drive the first rotating disk 20 and the second rotating disk 22 to rotate around the first pin and the second pin, thereby controlling the overlapping area of the elliptical air outlet A21 and the left air inlet 4 of the chamber to increase, and the overlapping area of the elliptical air outlet B23 and the right air inlet 5 of the chamber to increase, thereby controlling the air volume of the left air inlet 4 and the right air inlet 5 of the chamber to increase. Conversely, controlling the first geared motor 16 to rotate in reverse can reduce the air volume of the left air inlet 4 and the right air inlet 5 of the chamber, which will not be described in detail.
[0029] Furthermore, four sets of elliptical air vents A21 are provided, all of which are elliptical and arranged around the rotation center line of the first pin shaft, with the included angle between adjacent sets being 90 degrees. Preferably, four sets of elliptical air vents B23 are provided, all of which are elliptical and arranged around the rotation center line of the second pin shaft, with the included angle between adjacent sets being 90 degrees.
[0030] Furthermore, the air intake volume of the right air inlet 5 of the chamber is the same as the air outlet volume of the right air exchange outlet 10.
[0031] Furthermore, the second airflow regulating mechanism has the same structure and the same principle as the first airflow regulating mechanism.
[0032] Furthermore, the pre-purification air intake filter 8 can be a HEPA filter or other existing air filter, and can be detachably installed on the left air intake 4 or the right air intake 5 of the chamber.
[0033] Furthermore, real-time temperature sensors A12 and B13 are respectively installed on the inner walls of both sides of the mounting cavity. The real-time temperature sensors A12 and B13 are electrically connected to the signal input terminals of the linkage control controller 14. The first reduction motor 16 and the second reduction drive motor of the second air volume adjustment mechanism are electrically connected to the signal output terminals of the linkage control controller 14.
[0034] The real-time temperature sensor A12 detects temperature changes in the left half of the transmitter housing 1. The linkage control controller 14 controls the forward and reverse rotation of the first reduction motor 16 to control the air volume of the left air inlet 4 and the left ventilation outlet 9 of the chamber. The real-time temperature sensor B13 detects temperature changes in the right half of the transmitter housing 1. The linkage control controller 14 controls the forward and reverse rotation of the second reduction drive motor to control the air volume of the right air inlet 5 and the right ventilation outlet 10 of the chamber, thus achieving zoned temperature control.
[0035] Furthermore, an emergency fire extinguisher 11 is fixed in the fire extinguisher mounting cavity at the bottom of the transmitter housing 1, and the jet pipe of the emergency fire extinguisher 11 extends through the outer shell of the transmitter housing 1 to the upper inner part of the mounting cavity.
[0036] Furthermore, an emergency smoke sensor 15 is installed on the lower surface of the horizontal partition plate 3 of the housing. The emergency smoke sensor 15 is electrically connected to the signal input terminal of the linkage control controller 14 via a signal line. The solenoid valve at the nozzle of the emergency fire extinguisher 11 is electrically connected to the signal output terminal of the linkage control controller 14. When the emergency smoke sensor 15 detects a fire inside the transmitter housing 1, the first reduction motor 16 and the second reduction drive motor control the left air inlet 4, the right air inlet 5, the left ventilation outlet 9 and the right ventilation outlet 10 of the chamber to close simultaneously, and can control the solenoid valve to open, spraying carbon dioxide into the transmitter housing 1 to extinguish the fire.
[0037] Furthermore, the linkage control controller 14 is a PLC controller or a microcontroller controller.
[0038] The digital broadcast television base station described in this invention uses real-time temperature sensors arranged in the left and right sections of the housing, along with an independent airflow adjustment mechanism, to achieve precise temperature control of the left and right halves of the transmitter housing mounting cavity. The airflow at the corresponding air inlets and outlets can be dynamically adjusted according to temperature changes in different areas, ensuring that core equipment such as the television broadcast transmitter is always in a suitable operating temperature environment, effectively avoiding equipment failure or performance degradation caused by high temperatures.
[0039] The digital broadcast television transmission base station of the present invention is equipped with a pre-purification air intake filter on the inner side of the left and right air intakes of the chamber. This filter can effectively remove dust and purify the air entering the gas buffer chamber, reduce dust and other impurities from entering the installation chamber and adhering to the equipment surface, reduce equipment wear and failure probability, and extend the service life of the core equipment.
[0040] The digital broadcast television base station described in this invention adopts a geared motor-driven rotating disk airflow adjustment structure. The rotating disk is precisely rotated through linkage transmission, thereby controlling the overlapping area of the air outlets to adjust the airflow. The adjustment process is stable and controllable. Furthermore, the second inlet and outlet airflow adjustment mechanism has the same structure and principle as the first inlet and outlet airflow adjustment mechanism, which reduces the complexity of equipment design and maintenance.
[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
[0042] Any aspects of this invention not described in detail are well-known to those skilled in the art.
Claims
1. A digital broadcast television transmission base station, comprising an indoor transmitter enclosure and an outdoor transmission tower, wherein a television broadcast transmission host is disposed within the transmitter enclosure, and a transmission antenna is mounted on the transmission tower, characterized in that: The transmitter housing has a closable front door, which is installed on the opening on the front side of the transmitter housing. A horizontal partition plate is provided on the upper interior of the transmitter housing, dividing the interior into a gas buffer chamber and a mounting chamber. A top air inlet connecting the gas buffer chamber and the mounting chamber is located in the middle of the horizontal partition plate. A chamber air supply turbine fan for supplying air to the mounting chamber is installed on the top air inlet. Left-side chamber air inlets connected to the gas buffer chamber are located on both sides of the upper part of the transmitter housing. The transmitter housing has an air inlet on the right side of the chamber and an air inlet on the left side of the chamber. A set of pre-filters for dust removal is installed on the inner side of the air inlet on the left side of the chamber and an air outlet on the right side of the bottom of the transmitter housing. The transmitter housing has a left air outlet and a right air outlet on the right side of the bottom of the chamber, which are connected to the mounting cavity. The transmitter housing has a first air volume adjustment mechanism on the left side wall to control the air volume of the left air inlet and the left air outlet. The transmitter housing has a second air volume adjustment mechanism on the right side wall to control the air volume of the right air inlet and the right air outlet.
2. The digital broadcast television transmission base station according to claim 1, characterized in that, The air intake volume of the left air inlet of the chamber is the same as the air outlet volume of the left ventilation outlet.
3. The digital broadcast television transmitting base station according to claim 2, characterized in that, The first airflow adjustment mechanism includes a first geared motor fixed to the inner wall of the transmitter housing. The power output shaft of the first geared motor passes through the transmitter housing and is fitted with a first drive rod. A first push-pull drive linkage and a second push-pull drive linkage are respectively hinged to both ends of the first drive rod. The mechanism also includes a first rotating disk and a second rotating disk. The first rotating disk is rotatably mounted on a first pin, which is fixed to the outer wall of the transmitter housing. The first rotating disk is in contact with the outer wall of the transmitter housing. Multiple sets of elliptical shapes are formed on the first rotating disk. The chamber has multiple elliptical air inlets A arranged around the same rotation center line with equal included angles between adjacent air inlets. The left side air inlet of the chamber includes multiple elliptical air inlets C corresponding one-to-one with the elliptical air inlets A. The multiple elliptical air inlets C are arranged around the same rotation center line with equal included angles between adjacent air inlets. By rotating the first rotating disk, the overlapping area of the elliptical air inlets A and C is controlled, thereby controlling the air volume. The upper end of the first push-pull drive linkage is hinged to the eccentric rotating shaft A on the edge of the first rotating disk, and the first rotating disk is driven to rotate by the first reduction motor. The second rotating disk is rotatably mounted on the second pin, which is fixed to the outer wall of the transmitter housing. The second rotating disk is in close contact with the outer wall of the transmitter housing. The second rotating disk has multiple sets of elliptical air vents B, which are arranged around the same rotation center line and the included angle between adjacent vents is equal. The air inlet on the right side of the chamber includes multiple sets of elliptical air vents D that correspond one-to-one with the elliptical air vents B. The multiple sets of elliptical air vents D are arranged around the same rotation center line and the included angle between adjacent vents is equal. By rotating the second rotating disk, the overlapping area of the elliptical air vents B and the air inlet on the right side of the chamber is controlled, thereby controlling the air volume. The upper end of the second push-pull drive linkage is hinged to the eccentric rotating shaft B on the edge of the second rotating disk, and the first rotating disk is driven to rotate by the first reduction motor.
4. The digital broadcast television transmitting base station according to claim 3, characterized in that, The air intake volume of the right air inlet of the chamber is the same as the air outlet volume of the right ventilation outlet.
5. The digital broadcast television transmitting base station according to claim 4, characterized in that, The second airflow regulating mechanism has the same structure as the first airflow regulating mechanism.
6. The digital broadcast television transmitting base station according to claim 5, characterized in that, The pre-filter is a HEPA filter.