CN115968696A - Greenhouse variable frequency heater - Google Patents
Greenhouse variable frequency heater Download PDFInfo
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- CN115968696A CN115968696A CN202310278543.9A CN202310278543A CN115968696A CN 115968696 A CN115968696 A CN 115968696A CN 202310278543 A CN202310278543 A CN 202310278543A CN 115968696 A CN115968696 A CN 115968696A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The invention discloses a greenhouse variable frequency heater, which belongs to the field of greenhouse air heaters, and comprises a heater main body and an air outlet mechanism arranged on the heater main body, wherein a PCB (printed circuit board), a frequency converter, a fan and a heater are arranged in the heater main body, the air outlet mechanism is connected with the output end of the fan, the air outlet quantity of the fan is in direct proportion to the air outlet area of the air outlet mechanism, the air outlet mechanism comprises a main wind guide cover fixedly connected to the heater main body and communicated with the fan, a plurality of small air outlet units communicated with the main wind guide cover are fixedly connected to the main wind guide cover, the small air outlet units are arranged in multiple rows, and a sealing assembly for sealing the small air outlet units is fixedly connected to the main wind guide cover.
Description
Technical Field
The invention relates to the field of greenhouse air heaters, in particular to a variable-frequency heater for a greenhouse.
Background
With the improvement of living standard of people, some out-of-season vegetables and fruits are more popular, and the greenhouse is needed for planting the out-of-season vegetables and fruits, and the variable frequency electromagnetic air heating equipment is needed for keeping the temperature of the greenhouse;
for example, in the chinese patent with the publication number CN206651132U, the waste heat emitted by the heating element of the frequency converter or the inverter is fully utilized, so that the energy is saved for the greenhouse planting in winter, and the device has double values of ecological environmental protection, energy saving and efficiency improvement;
however, in practical applications, hot air exhausted from the heater is generally exhausted to a designated position through the air pipe, but because the air volume exhausted under the high-frequency state and the low-frequency state of the heater is different, and the air outlet area of the air pipe is always unchanged, the air speed of the hot air flowing under the high-frequency state and the low-frequency state is different, and the heat energy lost when the hot air with different air speeds flows inside the air pipe is different, the heat energy contained inside the hot air after being exhausted to the designated position is different to a certain extent, and the accuracy of temperature control is affected.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a variable-frequency heater for a greenhouse, which can reduce the difference of heat energy loss when hot air flows in an air outlet mechanism in a high-frequency state and a low-frequency state and improve the accuracy of temperature control.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides a big-arch shelter warmhouse booth frequency conversion heater, includes the heater main part and installs the air-out mechanism in the heater main part, the inside of heater main part is provided with PCB circuit board, converter, fan and heater, the output of air-out mechanism and fan meets, just the air output of fan and the air-out area direct ratio of air-out mechanism.
Further, air-out mechanism is including the leading wind cover that fixed connection is linked together with the fan in the heater main part, a plurality of little air-out units that are linked together with leading wind cover of fixedly connected with are a plurality of on leading wind cover little air-out unit is the multirow setting, fixedly connected with carries out the seal assembly of sealed action to little air-out unit on leading wind cover.
Furthermore, seal assembly is including the deep bead of vertical sliding connection in main wind scooper inside, be equipped with first electric push rod on the main wind scooper, the output and the deep bead fixed connection of first electric push rod.
Furthermore, the small air outlet unit comprises an auxiliary air guide cover which is fixedly connected to the main air guide cover and communicated with the main air guide cover, a plurality of air exhaust assemblies communicated with the auxiliary air guide cover are fixedly connected to the auxiliary air guide cover, and a plurality of air blocking valves matched with the air exhaust assemblies are further arranged inside the auxiliary air guide cover.
Furthermore, the wind-break valve comprises a top plate fixedly connected to the inner wall of the upper side of the main wind scooper, a movable plate is rotatably connected to one end, close to the air exhaust assembly, of the top plate, and a tension piece connected with the movable plate is assembled to one end, far away from the air exhaust assembly, of the top plate.
Furthermore, the pulling force piece is including fixed connection keeping away from the collateral branch frame of the subassembly one end of airing exhaust at the roof, it is connected with a winding section of thick bamboo to rotate on the collateral branch frame, the winding section of thick bamboo outside winding has the arm-tie rope, the one end that the winding section of thick bamboo was kept away from to the arm-tie rope is equipped with the moving part that links to each other with the fly leaf, still fixedly connected with and motor on the collateral branch frame, the output of motor and the axle center fixed connection of a winding section of thick bamboo.
Furthermore, a magnetic part connected with the movable plate is arranged inside the main air guide cover, the magnetic part comprises a first magnet and a second magnet which are mutually attracted magnetically, the second magnet is fixedly connected to the inner wall of one side, close to the air exhaust assembly, of the main air guide cover, and the first magnet is fixedly connected to the movable plate.
Furthermore, the exhaust assembly comprises a ventilation pipe which is fixedly connected to the auxiliary air guide cover and communicated with the auxiliary air guide cover, the inner diameter of the ventilation pipe is smaller than the outer diameter of the movable plate, a plurality of air guide branch pipes are assembled on the ventilation pipe, an adjustable air outlet head is assembled at one end, far away from the ventilation pipe, of each air guide branch pipe, and the opening area of the adjustable air outlet head and the air distance between the adjustable air outlet head and the auxiliary air guide cover are in direct proportion.
Furthermore, the adjustable air outlet head comprises an air exhaust head fixedly connected to one end, far away from the ventilation pipe, of the air guide branch pipe, a horizontally sliding valve core is assembled on the air exhaust head, a gap between the valve core and the air exhaust head is a tail end air port, and an electric adjusting piece connected with the valve core is fixedly connected to the outer side of the air exhaust head.
Furthermore, the electric adjusting part comprises a valve body shell fixedly connected to the outer side of the exhaust head, a storage cavity in clearance fit with the valve core is formed in the valve body shell, a second electric push rod is fixedly connected to one end, far away from the exhaust head, of the valve body shell, and the output end of the second electric push rod is fixedly connected with the valve core.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
this scheme improves through the structure to air-out mechanism, and automatically regulated air-out area of air-out mechanism when the heater carries out the frequency conversion makes the inside hot-blast wind speed that flows of air-out mechanism the same all the time to reduce the difference that hot-blast heat energy runs off when air-out mechanism inside flows under high frequency state and the low frequency state, thereby promote the accurate nature of accuse temperature.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an air outlet mechanism according to the present invention;
FIG. 3 is a schematic structural view of a small air outlet unit according to the present invention;
FIG. 4 is a cross-sectional view of the present invention shown in FIG. 3;
FIG. 5 is a side view of the structure of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic view of the construction of the venting assembly of the present invention;
fig. 7 is a sectional structure diagram of the adjustable air outlet head of the present invention.
The reference numbers in the figures illustrate:
1. a heater main body; 2. an air outlet mechanism; 3. a main wind scooper; 4. a small air outlet unit; 5. a first electrical pushrod; 6. a wind deflector; 7. an auxiliary wind scooper; 8. an air exhaust assembly; 9. a wind-break valve; 10. a top plate; 11. a movable plate; 12. a tension member; 13. a magnetic member; 14. a side bracket; 15. a motor; 16. a winding drum; 17. pulling the plate rope; 18. a movable member; 19. a first magnet; 20. a second magnet; 21. a gasket; 22. a vent pipe; 23. an air guide branch pipe; 24. an adjustable air outlet head; 25. an exhaust head; 26. a valve body housing; 27. a second electric push rod; 28. a valve core.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is to be understood that the embodiments described are merely exemplary embodiments, rather than exemplary embodiments, and that all other embodiments may be devised by those skilled in the art without departing from the scope of the present invention.
Example 1:
referring to fig. 1-7, a variable frequency heater for a greenhouse comprises a heater body 1 and an air outlet mechanism 2 arranged on the heater body 1, wherein a PCB circuit board, a frequency converter, a fan and a heater are arranged inside the heater body 1, the frequency converter, the fan and the heater are all electrically connected with the PCB circuit board, the fan and the heater are both in a high frequency state and a low frequency state, the fan and the heater can be controlled by the frequency converter to be switched between the high frequency state and the low frequency state, the air outlet amount of the fan is different between the high frequency state and the low frequency state, the air outlet mechanism 2 is connected with the output end of the fan, and the air outlet amount of the fan is in direct proportion to the air outlet area of the air outlet mechanism 2;
at this time, the wind speed = the wind volume/area, when the wind volume of the wind power is reduced in a low-frequency state, and at the same time, the wind volume of the wind outlet mechanism 2 is reduced in proportion, when the wind volume and the wind outlet area of the wind outlet mechanism 2 are reduced in proportion, the wind speed flowing inside the wind outlet mechanism 2 is always unchanged, when hot wind flows inside the wind outlet mechanism 2 according to the same wind speed, the time length of the hot wind flowing inside the wind outlet mechanism 2 is the same, and the heat energy lost when the hot wind contacts the wind outlet mechanism 2 is the same, so that the difference of the heat energy lost when the hot wind flows inside the wind outlet mechanism 2 is reduced, and the accuracy of temperature control is improved.
To sum up, this technical scheme improves through the structure to air-out mechanism 2, and automatically regulated air-out area of air-out mechanism 2 can make the hot-blast wind speed of the inside flow of air-out mechanism 2 the same all the time when the heater carries out the frequency conversion to reduce the difference that heat energy runs off when hot-blast inside flow of air-out mechanism 2 under high frequency state and the low frequency state, thereby promote the accuracy of accuse temperature.
Example 2:
referring to fig. 1-2, in this embodiment, a specific structure of an air outlet mechanism 2 is disclosed based on embodiment 1, where the air outlet mechanism 2 includes a main wind scooper 3 fixedly connected to a heater main body 1 and communicated with a fan, the main wind scooper 3 is fixedly connected with a plurality of small air outlet units 4 communicated with the main wind scooper 3, and the small air outlet units 4 respectively extend into a plurality of main control temperature zones inside a greenhouse and are respectively used for controlling the temperature of the main control temperature zones;
in order to control a plurality of little air-out units 4, a plurality of little air-out units 4 are the multirow setting, fixedly connected with seals the seal assembly that little air-out unit 4 carried out the sealing action on main wind scooper 3, at this moment, seal a plurality of little air-out units 4 through seal assembly and can make partly little air-out unit 4 stop working, make the exhaust hot-blast discharge through another part little air-out unit 4, thereby make the inside wind speed of this part little air-out unit 4 remain unanimous all the time, reduce the loss of heat energy in little air-out unit 4 is inside.
Wherein, seal assembly is equipped with first electric push rod 5 including vertical sliding connection at the inside deep bead 6 of main wind scooper 3 on the main wind scooper 3, the output of first electric push rod 5 and deep bead 6 fixed connection, at this moment, drives deep bead 6 and removes through starting first electric push rod 5, lets deep bead 6 shelter from can to corresponding little air-out unit 4.
Example 3:
referring to fig. 2-5, in this embodiment, the structure of the small air outlet unit 4 is disclosed in detail on the basis of embodiment 2, the small air outlet unit 4 includes an auxiliary air guiding cover 7 fixedly connected to the main air guiding cover 3 and communicated with the main air guiding cover 3, a plurality of air exhaust assemblies 8 communicated with the auxiliary air guiding cover 7 are fixedly connected to the auxiliary air guiding cover 7, the air exhaust assemblies 8 installed on the same auxiliary air guiding cover 7 all extend into the same main temperature control zone, and the air exhaust assemblies 8 respectively extend into a plurality of small temperature control zones inside the same main temperature control zone;
in order to seal the openings of the plurality of exhaust air assemblies 8, a plurality of wind shielding valves 9 matched with the exhaust air assemblies 8 are further arranged inside the auxiliary wind scooper 7, and the openings of the plurality of exhaust air assemblies 8 can be sealed and opened through the plurality of wind shielding valves 9.
Specifically, as shown in fig. 3 to 5, the wind-blocking valve 9 includes a top plate 10 fixedly connected to the inner wall of the upper side of the main wind scooper 3, one end of the top plate 10 close to the air exhausting component 8 is rotatably connected to a movable plate 11, when the movable plate 11 rotates to a vertical state, the air exhausting component 8 can be blocked, and when the movable plate 11 rotates to a horizontal state and the top plate 10 is overlapped, the air exhausting component 8 can be opened.
In order to move the movable flap 11 upward, a tension member 12 connected to the movable flap 11 is mounted on an end of the top plate 10 away from the exhaust assembly 8, and when the tension member 12 is activated, the movable flap 11 is pulled to rotate the movable flap 11 away from the exhaust assembly 8.
The tension member 12 comprises a side bracket 14 fixedly connected to one end of the top plate 10 far away from the exhaust assembly 8, a winding drum 16 is rotatably connected to the side bracket 14, a pulling plate rope 17 is wound on the outer side of the winding drum 16, a moving member 18 connected with the movable plate 11 is assembled at one end of the pulling plate rope 17 far away from the winding drum 16, at the moment, the pulling plate rope 17 is wound through rotating the winding drum 16, the movable plate 11 can be driven to rotate towards the direction far away from the exhaust assembly 8 until the movable plate 11 is separated from the exhaust assembly 8, the pulling plate rope 17 is unwound through the winding drum 16, and the movable plate 11 can be driven to rotate towards the direction close to the exhaust assembly 8 until the movable plate 11 abuts against the exhaust assembly 8;
in addition, in order to provide kinetic energy for the winding drum 16, the side bracket 14 is also fixedly connected with the motor 15, the output end of the motor 15 is fixedly connected with the axis of the winding drum 16, at the moment, the winding drum 16 can be driven to rotate by starting the motor 15, and the winding drum 16 can be locked after the motor 15 stops.
Referring to fig. 3-5 again, in order to avoid a gap between the movable plate 11 and the exhaust assembly 8 when the movable plate 11 shields and seals the exhaust assembly 8, a magnetic member 13 connected to the movable plate 11 is disposed inside the main wind guiding cover 3, the magnetic member 13 includes a first magnet 19 and a second magnet 20 that are magnetically attracted to each other, the second magnet 20 is fixedly connected to an inner wall of the main wind guiding cover 3 near the exhaust assembly 8, the first magnet 19 is fixedly connected to the movable plate 11, and at this time, when the movable plate 11 is in a vertical state, the movable plate 11 is attracted by a magnetic force between the first magnet 19 and the second magnet 20, so that the movable plate 11 can tightly seal the exhaust assembly 8.
In addition, in order to further improve the sealing performance of the exhaust assembly, a sealing gasket 21 is fixedly connected to one side of the movable plate 11 close to the exhaust assembly 8, and the opening of the exhaust assembly 8 can be better sealed through the deformation of the material of the sealing gasket 21.
Example 4:
referring to fig. 4-7, in this embodiment, a specific structure of the exhaust assembly 8 is disclosed based on embodiment 3, the exhaust assembly 8 includes a ventilation pipe 22 fixedly connected to the secondary air guiding cover 7 and communicated with the secondary air guiding cover 7, an inner diameter of the ventilation pipe 22 is smaller than an outer diameter of the movable plate 11 and smaller than an outer diameter of the sealing gasket 21, the ventilation pipe 22 is equipped with a plurality of air guiding branch pipes 23, and one ends of the air guiding branch pipes 23 far away from the ventilation pipe 22 are equipped with adjustable air outlets 24;
when the hot air flows in the ventilation pipe 22, the heat energy contained in the hot air is gradually reduced, and the adjustable air outlet head 24 which is farther away from the auxiliary air guiding cover 7 needs to release more hot air to release the same heat energy.
Therefore, the opening area of the adjustable air outlet head 24 is gradually increased from one end of the auxiliary air guiding cover 7 to the end far away from the auxiliary air guiding cover 7, and the opening area of the adjustable air outlet head 24 is in direct proportion to the wind distance from the adjustable air outlet head 24 to the auxiliary air guiding cover 7.
Specifically, as shown in fig. 6-7, the adjustable air outlet head 24 includes an air outlet head 25 fixedly connected to one end of the air guiding branch pipe 23 away from the ventilation pipe 22, a horizontally sliding valve core 28 is mounted on the air outlet head 25, a gap between the valve core 28 and the air outlet head 25 is a terminal air port, and an electric adjusting member connected to the valve core 28 is fixedly connected to an outer side of the air outlet head 25 for driving the valve core 28 to horizontally move, so as to adjust the size of the terminal air port.
Electric adjusting part is including the valve body shell 26 of fixed connection in the head 25 outside of airing exhaust, the storage chamber with case 28 clearance fit is seted up to the inside of valve body shell 26, case 28 can contract completely to the inside of valve body shell 26, thereby make case 28 can contract completely to the inside of valve body shell 26, let the air-out area in terminal wind gap adjust to the biggest, valve body shell 26 keeps away from the one end fixedly connected with second electric putter 27 of head 25 of airing exhaust, second electric putter 27's output and case 28 fixed connection, can drive case 28 through starting second electric putter 27 and carry out horizontal migration, adjust the position of case 28.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The utility model provides a big-arch shelter warmhouse booth variable frequency heater, includes heater main part (1) and installs air-out mechanism (2) on heater main part (1), its characterized in that: the utility model discloses a heater, including heater main part (1), air-out mechanism (2), heater main part (1) inside is provided with PCB circuit board, converter, fan and heater, the output of air-out mechanism (2) and fan meets, just the air output of fan and the air-out area of air-out mechanism (2) are directly proportional.
2. The greenhouse variable-frequency heater as claimed in claim 1, wherein: the air outlet mechanism (2) comprises a main air guide cover (3) fixedly connected to the heater main body (1) and communicated with a fan, a plurality of small air outlet units (4) communicated with the main air guide cover (3) are fixedly connected to the main air guide cover (3), the small air outlet units (4) are arranged in a plurality of rows, and a sealing assembly for sealing the small air outlet units (4) is fixedly connected to the main air guide cover (3).
3. The greenhouse variable-frequency heater as claimed in claim 2, wherein: the sealing assembly comprises a wind shield (6) which is vertically connected to the inside of the main wind scooper (3) in a sliding mode, a first electric push rod (5) is assembled on the main wind scooper (3), and the output end of the first electric push rod (5) is fixedly connected with the wind shield (6).
4. The greenhouse variable-frequency heater as claimed in claim 2, wherein: the small air outlet unit (4) comprises an auxiliary air guide cover (7) which is fixedly connected to the main air guide cover (3) and communicated with the main air guide cover (3), a plurality of air exhaust assemblies (8) communicated with the auxiliary air guide cover (7) are fixedly connected to the auxiliary air guide cover (7), and a plurality of air blocking valves (9) matched with the air exhaust assemblies (8) are further arranged inside the auxiliary air guide cover (7).
5. The variable-frequency heater for the greenhouse of claim 4, wherein: the wind shield valve (9) comprises a top plate (10) fixedly connected to the inner wall of the upper side of the main wind scooper (3), a movable plate (11) is rotatably connected to one end, close to the air exhaust assembly (8), of the top plate (10), and a tension piece (12) connected with the movable plate (11) is assembled to one end, far away from the air exhaust assembly (8), of the top plate (10).
6. The greenhouse variable-frequency heater as claimed in claim 5, wherein: the air exhaust component is characterized in that the tension piece (12) comprises a side support (14) fixedly connected to the top plate (10) and far away from one end of the air exhaust component (8), a winding drum (16) is rotatably connected to the side support (14), a pulling plate rope (17) is wound on the outer side of the winding drum (16), one end, far away from the winding drum (16), of the pulling plate rope (17) is provided with a moving piece (18) connected with the moving plate (11), the side support (14) is fixedly connected with a motor (15), and the output end of the motor (15) is fixedly connected with the axis of the winding drum (16).
7. The greenhouse variable-frequency heater as claimed in claim 5, wherein: the air exhaust device is characterized in that a magnetic part (13) connected with the movable plate (11) is arranged inside the main air guide cover (3), the magnetic part (13) comprises a first magnet (19) and a second magnet (20) which are mutually attracted magnetically, the second magnet (20) is fixedly connected to the inner wall of one side, close to the air exhaust component (8), of the main air guide cover (3), and the first magnet (19) is fixedly connected to the movable plate (11).
8. The greenhouse variable-frequency heater as claimed in claim 5, wherein: the air exhaust assembly (8) comprises a ventilation pipe (22) which is fixedly connected to the auxiliary air guide cover (7) and communicated with the auxiliary air guide cover (7), the inner diameter of the ventilation pipe (22) is smaller than the outer diameter of the movable plate (11), a plurality of air guide branch pipes (23) are assembled on the ventilation pipe (22), an adjustable air outlet head (24) is assembled at one end, away from the ventilation pipe (22), of each air guide branch pipe (23), and the opening area of the adjustable air outlet head (24) and the wind distance between the adjustable air outlet head (24) and the auxiliary air guide cover (7) are in direct proportion.
9. The greenhouse variable-frequency heater as claimed in claim 8, wherein: the adjustable air outlet head (24) comprises an air exhaust head (25) fixedly connected to one end, far away from the ventilation pipe (22), of the air guide branch pipe (23), a valve core (28) which slides horizontally is assembled on the air exhaust head (25), a gap between the valve core (28) and the air exhaust head (25) is a tail end air port, and an electric adjusting piece connected with the valve core (28) is fixedly connected to the outer side of the air exhaust head (25).
10. The greenhouse variable-frequency heater as claimed in claim 9, wherein: the electric adjusting piece comprises a valve body shell (26) fixedly connected to the outer side of the exhaust head (25), a storage cavity in clearance fit with the valve core (28) is formed in the valve body shell (26), one end, far away from the exhaust head (25), of the valve body shell (26) is fixedly connected with a second electric push rod (27), and the output end of the second electric push rod (27) is fixedly connected with the valve core (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310278543.9A CN115968696B (en) | 2023-03-21 | 2023-03-21 | Frequency conversion heater for greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310278543.9A CN115968696B (en) | 2023-03-21 | 2023-03-21 | Frequency conversion heater for greenhouse |
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| CN115968696A true CN115968696A (en) | 2023-04-18 |
| CN115968696B CN115968696B (en) | 2023-06-20 |
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