CN116771932B - VAV variable air valve - Google Patents
VAV variable air valve Download PDFInfo
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- CN116771932B CN116771932B CN202311046349.4A CN202311046349A CN116771932B CN 116771932 B CN116771932 B CN 116771932B CN 202311046349 A CN202311046349 A CN 202311046349A CN 116771932 B CN116771932 B CN 116771932B
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- 238000007789 sealing Methods 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses a variable air volume valve of a variable air volume valve (VAV), which belongs to the technical field of variable air volume valves and comprises a main valve body, wherein the main valve body is an annular valve body, the annular valve body comprises an annular outer shell and an annular inner shell, a top sealing shell and a bottom sealing shell are respectively and fixedly connected to the top and the bottom between the annular outer shell and the annular inner shell, a first air inlet and a first air outlet are respectively formed in the centers of the rear end and the front end of the annular outer shell, and a plurality of through first air measuring holes are formed in the center of the rear end of the annular inner shell. According to the invention, by designing the annular valve body structure, the wind measuring result is more accurate, and the opening angle of the valve clack can be controlled more accurately, so that the error between the wind output of the wind quantity valve and the actually required wind quantity is further reduced, thereby further saving energy and reducing the use cost of an air conditioning system.
Description
Technical Field
The invention belongs to the technical field of variable air volume valves, and particularly relates to a variable air volume valve of a variable air volume valve (VAV).
Background
The variable air volume system VAV is a novel air conditioning system, and when the indoor environment temperature changes, the temperature of air supply (fixed air volume) and the air supply volume (variable air volume) are changed, and the two control modes can achieve the same control effect. The central air conditioning system adopting the variable air volume system can save energy by about 20 percent. VAV systems generally consist of an air conditioning unit with a variable capacity adjustment motor and a variable air volume end unit. The monitoring content comprises controlling the start and stop of the fan and monitoring the start and stop state and the control state. According to the indoor temperature measurement value, the air door size and the opening degree of the water valve are adjusted to control the temperature, so that the room temperature is kept stable.
The VAV variable air valve is widely applied to medium and large air conditioning systems or fresh air systems, various different types of VAV variable air valves exist in the market at present, although the variable air valve can play a role in air volume adjustment, certain defects still exist in structural design of the variable air valve, most valve bodies of the variable air valve are of straight cylindrical structural design (comprising cylindrical and square tubes), and the air measuring structures of the variable air valve are of cross-shaped or circular ring structural design at the air inlet positions of the variable air valve, and the cross-shaped or circular ring-shaped air measuring structural design can also measure differential pressure data in the valve, but the self structure of the variable air valve can occupy certain space at the air inlet, so that the sectional area of the air inlet can be reduced, the actual air speed and the pressure of the air inlet can be influenced to a certain extent, the measured wind differential pressure and the actual differential pressure can have certain errors, and the size of the opening and closing angles of valve core blades can be further influenced due to the errors, so that the air volume of the air valve is deviated from the actually required air volume, thereby being unfavorable for further saving energy sources and reducing the use cost of the air conditioning system.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a VAV variable air volume valve.
The technical scheme adopted for solving the technical problems is as follows: the VAV variable air valve comprises a main valve body, wherein the main valve body is an annular valve body, the annular valve body comprises an annular outer shell and an annular inner shell, a top sealing shell and a bottom sealing shell are respectively fixedly connected to the top and the bottom between the annular outer shell and the annular inner shell, a first air inlet and a first air outlet are respectively formed in the centers of the rear end and the front end of the annular outer shell, and a plurality of through first air measuring holes are formed in the center of the rear end of the annular inner shell;
the center of the rear end of the annular shell is fixedly connected with an air inlet pipe communicated with the first air inlet, and the center of the front end of the annular shell is fixedly connected with an air outlet pipe communicated with the first air outlet; the air inlet pipe main body is of a square pipe-shaped structural design, the cross section area of the air inlet pipe is twice of the cross section area between the annular outer shell and the annular inner shell, air flow can be split along two sides of the first air inlet after entering the annular valve body through the air inlet pipe, the pressure of the split air flow is unchanged due to the unchanged cross section area of the air flow passage, the air flow flows into the air outlet pipe through the first air outlet after being measured, finally enters a room through the air outlet pipe, and the shape of the air outlet pipe can be designed into a cylinder shape or a square pipe shape according to actual requirements;
the annular valve body is provided with a wind measuring mechanism, and the inner side of the annular inner shell is provided with a main controller corresponding to the wind measuring mechanism;
the rotary valve core is arranged in the air outlet pipe, a rotary supporting mechanism corresponding to the rotary valve core is arranged in the center of the bottom of the air outlet pipe, and a valve core actuator for driving the rotary valve core is arranged in the center of the top of the air outlet pipe.
Further, the plurality of first wind measuring holes are uniformly distributed in a peripheral scattering mode at the center of the rear end of the annular inner shell.
Through the technical scheme, when the air flow entering through the air inlet pipe blows to the rear end face of the annular inner shell, the air flow can enter the air guide cover through the first air measuring holes which are in a plurality of scattering shapes and are uniformly distributed, so that the acquired data of the air flow pressure are more accurate and are closer to an actual pressure value, and the accuracy of a subsequent measuring result is further ensured.
Further, survey fan and construct including wind scooper and two survey wind posts, the wind scooper is fixed in annular inner shell rear end inboard, two survey wind post is fixed in the both sides between top seal shell and the bottom seal shell, the wind guiding hole has been seted up at the center of wind scooper one side, the outside of wind guiding hole is connected with first guide duct, and a plurality of evenly distributed's inlet opening has all been seted up to the outer wall both sides of two survey wind posts, the round hole that link up mutually with corresponding survey wind post has all been seted up at the center of bottom seal shell bottom both sides, two the bottom of round hole all is connected with the second guide duct, two through the tee bend intercommunication between the second guide duct, the other end of tee bend is connected with the third guide duct.
Through the technical scheme, as the wind scooper is fixed on the inner side of the rear end of the annular inner shell, and the plurality of first wind measuring holes on the annular inner shell are opposite to the first air inlets, air flow entering through the air inlet pipe and the first air inlets can be directly blown to the plurality of first wind measuring holes, part of air flow can enter the wind scooper through the plurality of first wind measuring holes, then enter the first air guide pipe through the wind guiding holes on the wind scooper, finally enter the pressure sensor through the first air guide pipe, and the air inlet position of the first air inlets is not interfered by any other structure because the air inlet pipe is communicated with the first air inlets, so that the air flow entering through the air inlet pipe can directly pass through the plurality of first wind measuring holes and is finally guided into the pressure sensor to be measured, the measurement result is more accurate and is more approximate to the actual wind pressure difference, and the error value is greatly reduced.
Further, the two anemometry posts are hollow tubular structures.
Through the technical scheme, through designing the hollow tubular structural design's wind measuring column for when the air that flows in the annular valve body was through the wind measuring column, partial return air can get into the wind measuring column through a plurality of inlet openings, then the air current gets into the second guide duct through corresponding round hole, and the air current that two strands of collection can get into the third guide duct through the tee bend, finally is guided into pressure sensor through the third guide duct.
Further, the main controller comprises a controller shell fixed on the inner side of the front end of the annular inner shell, a detachable cover body is mounted on the controller shell, a first cavity and a second cavity are respectively arranged in the controller shell, a pressure sensor is mounted in the first cavity, a plurality of through ventilation holes are formed in one side of the first cavity, and a main control chip electrically connected with the pressure sensor is mounted in the second cavity.
Through the technical scheme, after the air flows in the first air guide pipe and the third air guide pipe are led into the pressure sensor, the pressure sensor can automatically detect the pressure difference of two air flows, the pressure sensor can transmit detected pressure difference data to the main control chip in the controller shell, and the main control chip can judge according to the received signals and send commands to the valve element actuator.
Further, the other ends of the first air guide pipe and the third air guide pipe are communicated with the pressure sensor.
Through the technical scheme, the air flows in the first air guide pipe and the third air guide pipe can be guided into the pressure sensor for pressure detection, and the pressure sensor can automatically detect the pressure difference value of the two air flows.
Further, the rotary valve core comprises a valve clack arranged in the air outlet pipe, a vertical valve rod is arranged at the center of the valve clack, and silica gel sealing gaskets are arranged on two sides of the outer wall of the valve clack.
Through the technical scheme, the valve clack can rotate in the air outlet pipe, so that the air outlet quantity of the air outlet pipe is changed.
Further, the rotary supporting mechanism comprises a first positioning seat fixed at the bottom of the outer wall of the air outlet pipe, a first bearing is installed in the first positioning seat, a first positioning hole penetrating through is formed in the center of the bottom of the outer wall of the air outlet pipe, the bottom end of the valve rod penetrates through the first positioning hole and is fixed to an inner ring of the first bearing, a first sealing gasket corresponding to the valve rod is further installed in the first positioning hole, and a bottom cover is fixedly installed at the bottom end of the first positioning seat.
Through above-mentioned technical scheme, the first bearing can play the rotation support effect to the bottom of valve rod for the valve rod can free rotation, installs first sealed pad in the first locating hole moreover, thereby can play better sealed effect.
Further, the valve core executor is including being fixed in executor casing and the second positioning seat at air-out pipe outer wall top, install detachable executor cap on the executor casing, install the second bearing in the second positioning seat, the second locating hole corresponding with the valve rod is seted up at air-out pipe top center, and the top of valve rod runs through the second locating hole and is fixed in the inner ring of second bearing, still install the second sealed pad corresponding with the valve rod in the second locating hole, the top fixed mounting of valve rod outer wall has the transmission worm wheel, the positioning bearing is all installed to the both sides of executor casing inner wall, two the rotation is connected with the drive worm with transmission worm wheel meshing between the positioning bearing, servo motor that is connected with the drive worm is installed to executor casing outer wall one side.
Through above-mentioned technical scheme, the second bearing can play rotary support and limiting displacement to the top of valve rod for the valve rod can carry out free rotation between first bearing and second bearing, in addition, after main control chip sends command signal to servo motor, servo motor's output shaft can drive the drive worm and carry out synchronous rotation, and the drive worm can drive the transmission worm wheel and rotate when rotating, because the transmission worm wheel is fixed on the valve rod, and then can drive valve rod and valve clack rotation certain angle, thereby realize the automatically regulated of air output.
Further, an outer protective shell is arranged on the outer side of the annular valve body, and a detachable protective cover is arranged on the top of the outer protective shell.
Through above-mentioned technical scheme, install outer protective housing and protecting cover in annular valve body outside to can be better play the guard action to annular valve body, reduce external environment's interference, including dustproof, waterproof etc. effect.
The beneficial effects of the invention are as follows: (1) According to the invention, by designing the annular valve body structure, the wind measuring result is more accurate, and the opening angle of the valve clack can be controlled more accurately, so that the error between the wind output of the wind quantity valve and the actually required wind quantity is further reduced, thereby further saving energy and reducing the use cost of an air conditioning system; (2) According to the invention, the wind scooper is fixed on the inner side of the rear end of the annular inner shell, the first wind measuring holes on the annular inner shell are opposite to the air inlet, and in addition, the air inlet position of the air inlet is free from interference of any other structure, so that air flow entering through the air inlet pipe can directly enter the wind scooper through the first wind measuring holes and finally is led into the pressure sensor for measurement, the measurement result is more accurate and is more approximate to the actual wind pressure difference, and the error value is greatly reduced.
Drawings
FIG. 1 is a schematic view of a cylindrical air outlet pipe according to an embodiment of the present invention;
FIG. 2 is a schematic view of a side air outlet pipe according to an embodiment of the present invention;
FIG. 3 is a top view of a first embodiment of the invention;
FIG. 4 is a schematic view of the main structure of the valve body of the present invention;
FIG. 5 is a schematic view of the internal structure of the annular valve body of the present invention;
FIG. 6 is a front view of the annular valve body of the present invention;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;
FIG. 8 is an enlarged view of a portion of FIG. 7 at A;
FIG. 9 is a partial enlarged view at B in FIG. 7;
FIG. 10 is a right side view of the annular valve body of the present invention;
FIG. 11 is a cross-sectional view taken along B-B in FIG. 10;
FIG. 12 is a cross-sectional view taken along line C-C of FIG. 10;
FIG. 13 is a schematic view of the internal structure of the main controller of the present invention;
FIG. 14 is a schematic view of the mounting structure of the valve cartridge actuator of the present invention;
FIG. 15 is a schematic view of the internal structure of the valve cartridge actuator of the present invention;
fig. 16 is an external configuration diagram of a second embodiment of the present invention;
fig. 17 is a schematic view of the structure of the U-shaped valve body of the present invention.
Reference numerals: 1. an annular valve body; 101. an annular housing; 102. an annular inner housing; 103. a top seal housing; 104. a bottom seal housing; 105. a first air inlet; 106. a first air outlet; 107. a first anemometer hole; 2. an air inlet pipe; 3. an air outlet pipe; 4. a wind measuring mechanism; 401. a wind scooper; 402. an air guide hole; 403. a first air guide pipe; 404. a wind measuring column; 405. an air inlet hole; 406. a second air guide pipe; 407. a tee joint; 408. a third air guide pipe; 409. a round hole; 5. a main controller; 501. a controller housing; 502. a cover body; 503. a first cavity; 504. a second cavity; 505. a pressure sensor; 506. a vent hole; 507. a main control chip; 6. rotating the valve core; 601. a valve flap; 602. a valve stem; 603. a silica gel sealing pad; 7. a rotary support mechanism; 701. a first positioning seat; 702. a first bearing; 703. a first gasket; 704. a bottom cover; 8. a valve core actuator; 801. an actuator housing; 802. an actuator housing cover; 803. a second positioning seat; 804. a second bearing; 805. a second gasket; 806. a drive worm wheel; 807. positioning a bearing; 808. driving a worm; 809. a servo motor; 9. an outer protective housing; 10. a protective cover; 11. a U-shaped valve body; 1101. a U-shaped housing; 1102. a U-shaped inner shell; 1103. a side plate; 1104. an outer housing; 1105. a second air inlet; 1106. a second air outlet; 1107. and a second anemometer hole.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Embodiment one: as shown in fig. 1-5, the VAV variable air volume valve of this embodiment includes a main valve body, the main valve body is an annular valve body 1, the annular valve body 1 includes an annular outer shell 101 and an annular inner shell 102, a top sealing shell 103 and a bottom sealing shell 104 are fixedly connected to the top and the bottom between the annular outer shell 101 and the annular inner shell 102, a first air inlet 105 and a first air outlet 106 are respectively provided at the rear end and the front end center of the annular outer shell 101, a plurality of through first air measuring holes 107 are provided at the rear end center of the annular inner shell 102, and the plurality of first air measuring holes 107 are uniformly distributed in a scattering manner around the rear end center of the annular inner shell 102, so that when the air flow entering through the air inlet pipe 2 blows to the rear end surface of the annular inner shell 102, the air flow entering into the air guide cover 401 through the plurality of first air measuring holes 107 in a scattering manner and being uniformly distributed, so that the data of the collected air flow pressure is more accurate and is closer to the actual pressure value, and the accuracy of the subsequent measurement result is further ensured.
As shown in fig. 11, the center of the rear end of the annular housing 101 is fixedly connected with an air inlet pipe 2 communicated with a first air inlet 105, and the center of the front end of the annular housing 101 is fixedly connected with an air outlet pipe 3 communicated with a first air outlet 106; the main body of the air inlet pipe 2 is of a square pipe-shaped structural design, the sectional area of the air inlet pipe 2 is twice of the sectional area between the annular outer shell 101 and the annular inner shell 102, airflow can be split along two sides of the first air inlet 105 after entering the annular valve body 1 through the air inlet pipe 2, the pressure of the split airflow is unchanged due to unchanged sectional area of a channel of airflow flowing, the airflow flows into the air outlet pipe 3 through the first air outlet 106 after being measured, finally enters a room through the air outlet pipe 3, and the shape of the air outlet pipe 3 can be designed into a cylinder shape or a square pipe shape according to actual requirements.
As shown in fig. 4-12, the ring valve body 1 is provided with a wind measuring mechanism 4, the wind measuring mechanism 4 comprises a wind guiding cover 401 and two wind measuring columns 404, the wind guiding cover 401 is fixed on the inner side of the rear end of the ring inner shell 102, the two wind measuring columns 404 are fixed on two sides between the top sealing shell 103 and the bottom sealing shell 104, a wind guiding hole 402 is arranged at the center of one side of the wind guiding cover 401, a first wind guiding pipe 403 is connected on the outer side of the wind guiding hole 402, a plurality of evenly distributed wind inlet holes 405 are arranged at the two sides of the outer wall of the two wind measuring columns 404, round holes 409 communicated with the corresponding wind measuring columns 404 are arranged at the center of the two sides of the bottom sealing shell 104, second wind guiding pipes 406 are connected at the bottom ends of the two round holes 409, the two second wind guiding pipes 406 are communicated through a tee joint 407, a third wind guiding pipe 408 is connected at the other end of the tee joint 407, the two wind measuring columns 404 are hollow tubular structures, through the design of the hollow tubular structure design of the wind measuring column 404, when the air flowing in the annular valve body 1 passes through the wind measuring column 404, part of the return air can enter the wind measuring column 404 through a plurality of wind inlet holes 405, then the air flow enters the second wind guiding pipe 406 through corresponding round holes 409, two collected air flows can enter the third wind guiding pipe 408 through the tee joint 407, finally the air flows are guided into the pressure sensor 505 through the third wind guiding pipe 408, as the wind guiding cover 401 is fixed on the inner side of the rear end of the annular inner shell 102, and the plurality of first wind measuring holes 107 on the annular inner shell 102 are opposite to the first wind inlet 105, the air flow entering through the wind inlet pipe 2 and the first wind inlet 105 can be directly blown to the plurality of first wind measuring holes 107, part of the air flow can enter the wind guiding cover 401 through the plurality of first wind measuring holes 107, then enter the first wind guiding pipe 403 through the wind guiding hole 402 on the wind guiding cover 401, finally enter the pressure sensor 505 through the first wind guiding pipe 403, because the air inlet pipe 2 is communicated with the first air inlet 105, and the air inlet position of the first air inlet 105 is not interfered by any other structure, the air flow entering through the air inlet pipe 2 can directly pass through the first air measuring holes 107 and finally is led into the pressure sensor 505 for measurement, so that the measurement result is more accurate and is more approximate to the actual wind pressure difference, and the error value is greatly reduced.
As shown in fig. 12 to 13, a main controller 5 corresponding to the wind measuring mechanism 4 is installed inside the annular inner casing 102; the main controller 5 comprises a controller housing 501 fixed on the inner side of the front end of the annular inner housing 102, a detachable cover body 502 is mounted on the controller housing 501, a first cavity 503 and a second cavity 504 are respectively arranged in the controller housing 501, a pressure sensor 505 is mounted in the first cavity 503 (the pressure sensor 505 can adopt the existing Mi Ke MIK-P300 series sensors on the market), a plurality of through ventilation holes 506 are formed in one side of the first cavity 503, a main control chip 507 electrically connected with the pressure sensor 505 is mounted in the second cavity 504, after the airflows in the first air guide pipe 403 and the third air guide pipe 408 are led into the pressure sensor 505, the pressure sensor 505 can automatically detect the pressure difference of the two airflows, the pressure sensor 505 can transmit detected pressure difference data to the main control chip 507 in the controller housing 501, and the main control chip 507 can judge according to the received signals and send commands to the valve core actuator 8.
The other ends of the first air guide pipe 403 and the third air guide pipe 408 are communicated with the pressure sensor 505, so that the air flows in the first air guide pipe 403 and the third air guide pipe 408 can be guided into the pressure sensor 505 for pressure detection, and the pressure sensor 505 can automatically detect the pressure difference value of the two air flows.
As shown in fig. 6-8, a rotatable rotary valve core 6 is installed in the air outlet pipe 3, the rotary valve core 6 comprises a valve clack 601 arranged in the air outlet pipe 3, a vertical valve rod 602 is arranged at the center of the valve clack 601, silica gel sealing gaskets 603 are installed on two sides of the outer wall of the valve clack 601, the valve clack 601 can be designed into a round shape or a square shape according to the specific shape of the air outlet pipe 3, and the valve clack 601 can rotate in the air outlet pipe 3, so that the air outlet quantity of the air outlet pipe 3 is changed.
As shown in fig. 8, the center of the bottom of the air outlet pipe 3 is provided with a rotary supporting mechanism 7 corresponding to the rotary valve core 6, the rotary supporting mechanism 7 comprises a first positioning seat 701 fixed at the bottom of the outer wall of the air outlet pipe 3, a first bearing 702 is installed in the first positioning seat 701, a first positioning hole penetrating through the center of the bottom of the outer wall of the air outlet pipe 3 is formed, the bottom end of the valve rod 602 penetrates through the first positioning hole and is fixed to the inner ring of the first bearing 702, a first sealing pad 703 corresponding to the valve rod 602 is also installed in the first positioning hole, a bottom cover 704 is fixedly installed at the bottom end of the first positioning seat 701, the first bearing 702 can play a rotary supporting role on the bottom end of the valve rod 602, so that the valve rod 602 can freely rotate, and the first sealing pad 703 is installed in the first positioning hole, thereby a better sealing role can be played.
As shown in fig. 14-15, a valve core actuator 8 for driving a rotary valve core 6 is installed in the center of the top of the air outlet pipe 3, the valve core actuator 8 comprises an actuator housing 801 and a second positioning seat 803 which are fixed on the top of the outer wall of the air outlet pipe 3, a detachable actuator housing cover 802 is installed on the actuator housing 801, a second bearing 804 is installed in the second positioning seat 803, a second positioning hole corresponding to the valve rod 602 is formed in the center of the top of the air outlet pipe 3, the top end of the valve rod 602 penetrates through the second positioning hole and is fixed on the inner ring of the second bearing 804, a second sealing gasket 805 corresponding to the valve rod 602 is also installed in the second positioning hole, a transmission worm gear 806 is fixedly installed on the top of the outer wall of the valve rod 602, positioning bearings 807 are installed on both sides of the inner wall of the actuator housing 801, a driving worm 808 meshed with the transmission worm gear 806 are rotatably connected between the two positioning bearings 807, a servo motor 809 connected with the driving worm 808 is installed on one side of the outer wall of the actuator housing 801, the top end of the second bearing 804 can play a role in rotating support and limit on the top of the valve rod 602, the valve rod 602 can freely rotate between the first bearing 702 and the second bearing 804 and the second bearing 805 and rotate on the inner ring, and the second bearing 804, and are fixed on the output shaft 602, and can rotate synchronously and rotate the driving worm 808 due to the driving worm gear 808, and the driving worm rotation is driven by the driving motor 809, and the driving worm rotation motor is further, and the driving worm rotation motor 808.
As shown in fig. 1-3, the outer protective housing 9 is mounted on the outer side of the annular valve body 1, the detachable protective cover 10 is mounted on the top of the outer protective housing 9, and the outer protective housing 9 and the protective cover 10 are mounted on the outer side of the annular valve body 1, so that the annular valve body 1 can be better protected, and the interference of external environment is reduced, including dust prevention, water prevention and the like.
Embodiment two: as shown in fig. 16-17, the difference between the present embodiment and the first embodiment is that the main valve body may be designed into a U-shaped valve body 11, the U-shaped valve body 11 includes a U-shaped outer casing 1101 and a U-shaped inner casing 1102, two side plates 1103 are fixedly connected at the end positions between the U-shaped outer casing 1101 and the U-shaped inner casing 1102, an outer casing 1104 is fixedly connected at the top and the bottom between the U-shaped outer casing 1101 and the U-shaped inner casing 1102, a second air inlet 1105 and a second air outlet 1106 penetrating through the rear end and the front end center of the U-shaped outer casing 1101 are respectively provided, the cross section area between the U-shaped outer casing 1101 and the U-shaped inner casing 1102 is the same as the cross section area of the second air inlet 1105, a plurality of second through air metering holes 1107 are provided at the rear end center of the U-shaped inner casing 1102, and the plurality of second air metering holes 1107 are uniformly distributed in a scattering shape around the rear end center of the U-shaped inner casing 1102, the structural principle is the same as the scheme of the first embodiment, after the air flow enters the U-shaped inner casing 11 through the air inlet pipe 2 and the second air inlet, the air flow can flow along the channel between the U-shaped outer casing 1102, the front end and the front end, the second air inlet 1105 flows through the air inlet 1105, and finally flows into the valve core 1101 through the air inlet 1105 through the air outlet 6, and finally flows into the air inlet 1 through the valve body after passing through the air outlet 1105 and is regulated through the air outlet opening 6.
The working principle is that the air flow blown by the air conditioning system enters the annular valve body 1 through the air inlet pipe 2 and the first air inlet 105, the directly blown air flow can be directly blown to the first air measuring holes 107, part of the air flow can enter the air guide cover 401 through the first air measuring holes 107, then enter the first air guide pipe 403 through the air guide holes 402 on the air guide cover 401, finally enter the pressure sensor 505 through the first air guide pipe 403 for pressure measurement, the main air flow can be split along the two sides of the first air inlet 105, the split air flow pressure is unchanged due to the unchanged channel sectional area of the air flow, when the air flow passes through the air measuring column 404, part of the return air can enter the air measuring column 404 through the air inlet holes 405, then the air flow enters the second air guide pipe 406 through the corresponding round holes 409, the two collected air flows can enter the third air guide pipe 408 through the tee joint 407, finally, the air is led into the pressure sensor 505 through the third air guide pipe 408 for measurement, the pressure sensor 505 can automatically detect the pressure difference of two airflows, the pressure sensor 505 can transmit the detected pressure difference data to the main control chip 507 in the controller shell 501, the main control chip 507 can judge according to the received signal and send out a command to the valve core actuator 8, when the servo motor 809 receives the command signal, the output shaft of the servo motor 809 can drive the driving worm 808 to synchronously rotate, the driving worm 808 can drive the driving worm wheel 806 to rotate when rotating, the driving worm wheel 806 is fixed on the valve rod 602 and can drive the valve rod 602 and the valve clack 601 to rotate by a certain angle, thereby realizing the automatic regulation of the air output of the first air outlet 106, a proper amount of airflows flows into the air outlet pipe 3 through the first air outlet 106 and finally enters the room through the air outlet pipe 3, so that the room temperature remains stable.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (6)
1. The utility model provides a VAV variable air volume valve, includes main valve body, its characterized in that: the main valve body is an annular valve body (1), the annular valve body (1) comprises an annular outer shell (101) and an annular inner shell (102), a top sealing shell (103) and a bottom sealing shell (104) are fixedly connected to the top and the bottom between the annular outer shell (101) and the annular inner shell (102) respectively, a first air inlet (105) and a first air outlet (106) are respectively formed in the center of the rear end and the front end of the annular outer shell (101), and a plurality of through first air measuring holes (107) are formed in the center of the rear end of the annular inner shell (102);
an air inlet pipe (2) communicated with the first air inlet (105) is fixedly connected to the center of the rear end of the annular shell (101), and an air outlet pipe (3) communicated with the first air outlet (106) is fixedly connected to the center of the front end of the annular shell (101);
the annular valve body (1) is provided with a wind measuring mechanism (4), and the inner side of the annular inner shell (102) is provided with a main controller (5) corresponding to the wind measuring mechanism (4);
the wind measuring mechanism (4) comprises a wind scooper (401) and two wind measuring columns (404), wherein the wind scooper (401) is fixed on the inner side of the rear end of the annular inner shell (102), the two wind measuring columns (404) are fixed on two sides between the top sealing shell (103) and the bottom sealing shell (104), a wind guiding hole (402) is formed in the center of one side of the wind scooper (401), a first wind guiding pipe (403) is connected to the outer side of the wind guiding hole (402), a plurality of evenly distributed wind inlet holes (405) are formed in the two sides of the outer wall of the two wind measuring columns (404), round holes (409) communicated with the corresponding wind measuring columns (404) are formed in the centers of the two sides of the bottom sealing shell (104), second wind guiding pipes (406) are connected to the bottom ends of the two round holes (409), the two second wind guiding pipes (406) are communicated through a tee joint (407), and a third wind guiding pipe (408) is connected to the other end of the tee joint (407);
the two anemometry posts (404) are hollow tubular structures;
the main controller (5) comprises a controller shell (501) fixed on the inner side of the front end of the annular inner shell (102), a detachable cover body (502) is arranged on the controller shell (501), a first cavity (503) and a second cavity (504) are respectively arranged in the controller shell (501), a pressure sensor (505) is arranged in the first cavity (503), a plurality of through ventilation holes (506) are formed in one side of the first cavity (503), and a main control chip (507) electrically connected with the pressure sensor (505) is arranged in the second cavity (504);
the other ends of the first air guide pipe (403) and the third air guide pipe (408) are communicated with a pressure sensor (505);
the rotary valve core (6) is arranged in the air outlet pipe (3), a rotary supporting mechanism (7) corresponding to the rotary valve core (6) is arranged at the center of the bottom of the air outlet pipe (3), and a valve core actuator (8) for driving the rotary valve core (6) is arranged at the center of the top of the air outlet pipe (3).
2. A VAV variable air volume valve according to claim 1, characterized in that the plurality of first air measuring holes (107) are uniformly distributed in a scattering manner around the center of the rear end of the annular inner casing (102).
3. The VAV variable air volume valve according to claim 1, characterized in that the rotary valve core (6) comprises a valve clack (601) arranged in the air outlet pipe (3), a vertical valve rod (602) is arranged at the center of the valve clack (601), and silica gel sealing gaskets (603) are arranged on two sides of the outer wall of the valve clack (601).
4. A VAV variable air volume valve according to claim 3, characterized in that the rotary supporting mechanism (7) comprises a first positioning seat (701) fixed at the bottom of the outer wall of the air outlet pipe (3), a first bearing (702) is installed in the first positioning seat (701), a first positioning hole penetrating through is formed in the center of the bottom of the outer wall of the air outlet pipe (3), the bottom end of the valve rod (602) penetrates through the first positioning hole and is fixed on an inner ring of the first bearing (702), a first sealing gasket (703) corresponding to the valve rod (602) is also installed in the first positioning hole, and a bottom cover (704) is fixedly installed at the bottom end of the first positioning seat (701).
5. The VAV variable air volume valve according to claim 4, wherein the valve core actuator (8) comprises an actuator housing (801) and a second positioning seat (803) fixed on the top of the outer wall of the air outlet pipe (3), a detachable actuator housing cover (802) is mounted on the actuator housing (801), a second bearing (804) is mounted in the second positioning seat (803), a second positioning hole corresponding to the valve rod (602) is formed in the center of the top of the air outlet pipe (3), the top end of the valve rod (602) penetrates through the second positioning hole and is fixed on an inner ring of the second bearing (804), a second sealing gasket (805) corresponding to the valve rod (602) is further mounted in the second positioning hole, a transmission worm wheel (806) is fixedly mounted on the top of the outer wall of the valve rod (602), positioning bearings (807) are mounted on both sides of the inner wall of the actuator housing (801), a driving worm (808) meshed with the transmission worm wheel (806) is rotatably connected between the two positioning bearings (807), and one side of the outer wall (801) of the actuator housing (808) is provided with a driving worm (809) connected with the driving worm (809).
6. A VAV variable air volume valve according to claim 1, characterized in that an outer protective housing (9) is mounted outside the annular valve body (1), and a detachable protective cover (10) is mounted on top of the outer protective housing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311046349.4A CN116771932B (en) | 2023-08-18 | 2023-08-18 | VAV variable air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311046349.4A CN116771932B (en) | 2023-08-18 | 2023-08-18 | VAV variable air valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116771932A CN116771932A (en) | 2023-09-19 |
| CN116771932B true CN116771932B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311046349.4A Active CN116771932B (en) | 2023-08-18 | 2023-08-18 | VAV variable air valve |
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| Country | Link |
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| CN (1) | CN116771932B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11190553A (en) * | 1997-12-26 | 1999-07-13 | Kyoritsu Air Tech Inc | Variable air volume unit |
| CN204494738U (en) * | 2014-12-19 | 2015-07-22 | 珠海格力电器股份有限公司 | The casing of air quantity variable end device and air quantity variable end device |
| CN104807167A (en) * | 2014-01-24 | 2015-07-29 | 珠海格力电器股份有限公司 | Air supplying device and air-conditioning unit |
| CN213454052U (en) * | 2020-10-28 | 2021-06-15 | 天津市瑞中环海科技有限公司 | Variable air volume control device of new trend system |
| CN113606371A (en) * | 2021-09-02 | 2021-11-05 | 深圳市新景环境技术有限公司 | High-precision variable air volume venturi valve |
| CN216078342U (en) * | 2021-09-27 | 2022-03-18 | 江苏熙诚环保科技有限公司 | Novel variable air volume valve |
| CN116045009A (en) * | 2023-02-07 | 2023-05-02 | 广州驰拓智能科技有限公司 | Variable air volume valve with accurate air volume adjustment function |
-
2023
- 2023-08-18 CN CN202311046349.4A patent/CN116771932B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11190553A (en) * | 1997-12-26 | 1999-07-13 | Kyoritsu Air Tech Inc | Variable air volume unit |
| CN104807167A (en) * | 2014-01-24 | 2015-07-29 | 珠海格力电器股份有限公司 | Air supplying device and air-conditioning unit |
| CN204494738U (en) * | 2014-12-19 | 2015-07-22 | 珠海格力电器股份有限公司 | The casing of air quantity variable end device and air quantity variable end device |
| CN213454052U (en) * | 2020-10-28 | 2021-06-15 | 天津市瑞中环海科技有限公司 | Variable air volume control device of new trend system |
| CN113606371A (en) * | 2021-09-02 | 2021-11-05 | 深圳市新景环境技术有限公司 | High-precision variable air volume venturi valve |
| CN216078342U (en) * | 2021-09-27 | 2022-03-18 | 江苏熙诚环保科技有限公司 | Novel variable air volume valve |
| CN116045009A (en) * | 2023-02-07 | 2023-05-02 | 广州驰拓智能科技有限公司 | Variable air volume valve with accurate air volume adjustment function |
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| Publication number | Publication date |
|---|---|
| CN116771932A (en) | 2023-09-19 |
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