CN115968696B - Frequency conversion heater for greenhouse - Google Patents
Frequency conversion heater for greenhouse Download PDFInfo
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- CN115968696B CN115968696B CN202310278543.9A CN202310278543A CN115968696B CN 115968696 B CN115968696 B CN 115968696B CN 202310278543 A CN202310278543 A CN 202310278543A CN 115968696 B CN115968696 B CN 115968696B
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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 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 air cover fixedly connected on the heater main body and communicated with the fan, a plurality of small air outlet units communicated with the main air cover are fixedly connected on the main air cover, the small air outlet units are arranged in a plurality of rows, and a sealing component for sealing the small air outlet units is fixedly connected on the main air cover.
Description
Technical Field
The invention relates to the field of greenhouse air heaters, in particular to a greenhouse variable-frequency heater.
Background
With the improvement of the living standard of people, some out-of-season vegetables and fruits are more popular, and greenhouse is needed for planting the out-of-season vegetables and fruits, and the greenhouse is needed to be kept at the temperature by using variable-frequency electromagnetic air heating equipment;
for example, the Chinese patent with the publication number of CN206651132U fully utilizes the waste heat emitted by a heating element of a frequency converter or an inverter, saves energy for greenhouse planting in winter, and has double values of ecological environmental protection and energy conservation and synergy;
however, in practical application, the hot air exhausted by the heater is usually discharged to a designated position through the air pipe, but because the air quantity exhausted by the heater is different in a high-frequency state and a low-frequency state, the air outlet area of the air pipe is always unchanged, so that the air speeds of the hot air flowing in the high-frequency state and the low-frequency state are different, the heat energy lost when the hot air with different air speeds flows in the air pipe is different, and the heat energy contained in the hot air discharged to the designated position is different to a certain extent, thereby affecting the accuracy of temperature control.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a greenhouse variable frequency heater which can reduce the difference of heat energy loss when hot air flows in a wind outlet mechanism in a high-frequency state and a low-frequency state and improve the accuracy of temperature control.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The utility model provides a big-arch shelter warmhouse variable frequency heater, includes the heater main part and installs the air-out mechanism on 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-out volume of fan and the air-out area of air-out mechanism are in direct proportion.
Further, the air outlet mechanism comprises a main air guide cover which is fixedly connected to the heater main body and communicated with the fan, a plurality of small air outlet units which are communicated with the main air guide cover are fixedly connected to the main air guide cover, the small air outlet units are arranged in a plurality of rows, and a sealing assembly which performs sealing action on the small air outlet units is fixedly connected to the main air guide cover.
Further, the sealing assembly comprises a wind shield vertically and slidably connected inside the main wind shield, a first electric push rod is arranged on the main wind shield, and the output end of the first electric push rod is fixedly connected with the wind shield.
Further, 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 wind shielding valves matched with the air exhaust assemblies are further arranged in the auxiliary air guide cover.
Further, the wind shielding valve comprises a top plate fixedly connected to the inner wall of the upper side of the main wind cover, a movable plate is rotatably connected to one end, close to the exhaust assembly, of the top plate, and a tension piece connected with the movable plate is arranged at one end, far away from the exhaust assembly, of the top plate.
Further, the pulling force piece is including the side support of fixed connection in roof one end of keeping away from exhaust subassembly, the last rotation of side support is connected with the kinking section of thick bamboo, the kinking section of thick bamboo outside winding has the arm-tie rope, the one end that the kinking 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 side support, the output of motor and the axle center fixed connection of kinking section of thick bamboo.
Further, the inside of leading fan housing is provided with the magnetic part that links to each other with the fly leaf, the magnetic part is including first magnetite and the second magnetite of magnetism mutual absorption, second magnetite fixed connection is on leading fan housing is close to the one side inner wall of subassembly of airing exhaust, first magnetite fixed connection is on the fly leaf.
Further, the exhaust assembly comprises a ventilation pipe fixedly connected to the auxiliary wind scooper and communicated with the auxiliary wind scooper, the inner diameter of the ventilation pipe is smaller than the outer diameter of the movable plate, a plurality of wind guide branch pipes are arranged on the ventilation pipe, one end, far away from the ventilation pipe, of each wind guide branch pipe is provided with an adjustable wind outlet head, and the opening area of each adjustable wind outlet head is in direct proportion to the wind distance of each adjustable wind outlet head from the auxiliary wind scooper.
Further, the adjustable air outlet head comprises an air outlet head fixedly connected to one end, far away from the ventilating pipe, of the air guide branch pipe, a horizontally sliding valve core is arranged on the air outlet head, a gap between the valve core and the air outlet 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 outlet head.
Further, the electric regulating piece 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, one end, away from the exhaust head, of the valve body shell is fixedly connected with a second electric push rod, 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:
according to the scheme, through improving the structure of the air outlet mechanism, the air outlet area of the air outlet mechanism can be automatically adjusted when the heater carries out frequency conversion, so that the air speed of flowing hot air in the air outlet mechanism is always the same, the difference of heat energy loss when the hot air flows in the air outlet mechanism in a high-frequency state and a low-frequency state is reduced, and the accuracy of temperature control is improved.
Drawings
FIG. 1 is a schematic diagram of the structure 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 diagram of a small air outlet unit according to the present invention;
FIG. 4 is a schematic view of the cut-away structure of FIG. 3 according to the present invention;
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 structure of the exhaust assembly of the present invention;
fig. 7 is a schematic diagram of a sectional structure of an adjustable air outlet head according to the present invention.
The reference numerals in the figures illustrate:
1. a heater main body; 2. an air outlet mechanism; 3. a main wind cover; 4. a small air outlet unit; 5. a first electrical pushrod; 6. a wind deflector; 7. an auxiliary wind scooper; 8. an exhaust assembly; 9. a wind shielding 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. a drawplate rope; 18. a movable member; 19. a first magnet; 20. a second magnet; 21. a sealing gasket; 22. a ventilation pipe; 23. an air guide branch pipe; 24. an adjustable air outlet head; 25. a wind exhaust head; 26. a valve body case; 27. a second electric push rod; 28. and 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 apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
Example 1:
referring to fig. 1-7, a greenhouse variable frequency heater comprises a heater main body 1 and an air outlet mechanism 2 arranged on the heater main body 1, wherein a PCB circuit board, a frequency converter, a fan and a heater are arranged in the heater main body 1, the frequency converter, the fan and the heater are electrically connected with the PCB circuit board, the fan and the heater are in a high-frequency state and a low-frequency state, the fan and the heater can be controlled to be switched between the high-frequency state and the low-frequency state through the frequency converter, the air outlet quantity of the fan in the high-frequency state is different from the air outlet quantity of the fan in the low-frequency state, the output ends of the air outlet mechanism 2 and the fan are connected, and the air outlet quantity of the fan is in direct proportion to the air outlet area of the air outlet mechanism 2;
at this time, when the wind speed=the wind volume/area, the wind output of the wind power is reduced in a low-frequency state, and meanwhile, the wind output area of the wind output mechanism 2 is reduced in proportion, and under the condition that the wind volume and the wind output area of the wind output mechanism 2 are reduced in the same proportion, the wind speed flowing inside the wind output mechanism 2 is always unchanged, when the hot wind flows inside the wind output mechanism 2 according to the same wind speed, the flowing duration of the hot wind inside the wind output mechanism 2 is the same, and the heat energy lost when the hot wind contacts with the wind output mechanism 2 is the same, so that the difference of heat energy loss when the hot wind flows inside the wind output 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, can automatically regulated air-out area of air-out mechanism 2 when the heater carries out the frequency conversion, makes the wind speed that the inside hot-blast that flows of air-out mechanism 2 the same all the time to the difference that heat energy lost when the hot-blast flows in air-out mechanism 2 under high frequency state and the low frequency state reduces, thereby promotes the accuracy of accuse temperature.
Example 2:
referring to fig. 1-2, the specific structure of an air outlet mechanism 2 is disclosed on the basis of embodiment 1, the air outlet mechanism 2 includes a main air cover 3 fixedly connected to a heater main body 1 and communicated with a fan, a plurality of small air outlet units 4 communicated with the main air cover 3 are fixedly connected to the main air cover 3, and the small air outlet units 4 extend into a plurality of main control temperature partitions in a greenhouse respectively and are used for controlling temperatures of the main control temperature partitions respectively;
in order to control the small air outlet units 4, the small air outlet units 4 are arranged in a plurality of rows, a sealing assembly for sealing the small air outlet units 4 is fixedly connected to the main air cover 3, at the moment, the small air outlet units 4 can be sealed by the sealing assembly, part of the small air outlet units 4 can stop working, and the discharged hot air is discharged through the other part of the small air outlet units 4, so that the wind speed inside the part of the small air outlet units 4 is always consistent, and the loss of heat energy inside the small air outlet units 4 is reduced.
Wherein, seal assembly is including vertical sliding connection in the inside deep bead 6 of leading fan housing 3, is equipped with first electric putter 5 on leading fan housing 3, and first electric putter 5's output and deep bead 6 fixed connection, at this moment, drive deep bead 6 through starting first electric putter 5 and remove, let deep bead 6 shelter from corresponding little air-out unit 4 can.
Example 3:
referring to fig. 2-5, the present embodiment discloses the structure of the small air outlet unit 4 in detail based on embodiment 2, where the small air outlet unit 4 includes a secondary 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 secondary air guiding cover 7 are fixedly connected to the secondary air guiding cover 7, the air exhaust assemblies 8 installed on the same secondary air guiding cover 7 all extend into the same main control temperature zone, and the air exhaust assemblies 8 respectively extend into a plurality of small control temperature zones in the same main control temperature zone;
in order to seal the openings of the air exhaust assemblies 8, a plurality of wind shielding valves 9 matched with the air exhaust assemblies 8 are further arranged in the auxiliary wind scoopers 7, and the openings of the air exhaust assemblies 8 can be sealed and opened through the wind shielding valves 9.
Specifically, referring to fig. 3-5, the wind shielding valve 9 includes a top plate 10 fixedly connected to an inner wall of an upper side of the main wind cover 3, one end of the top plate 10, which is close to the exhaust assembly 8, is rotatably connected with a movable plate 11, when the movable plate 11 rotates to a vertical state, the exhaust assembly 8 can be blocked, and when the movable plate 11 rotates to a horizontal state and the top plate 10 overlap, the exhaust assembly 8 can be opened.
In order to drive the movable plate 11 to move upwards, one end of the top plate 10 far away from the exhaust assembly 8 is provided with a tension piece 12 connected with the movable plate 11, and when the tension piece 12 is started, the movable plate 11 can be pulled, so that the movable plate 11 rotates in a direction far away from the exhaust assembly 8.
The tension piece 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 pull plate rope 17 is wound on the outer side of the winding drum 16, a movable piece 18 connected with the movable plate 11 is assembled at one end of the pull plate rope 17 far away from the winding drum 16, at the moment, the movable plate 11 can be driven to rotate in the direction far away from the exhaust assembly 8 by rotating the winding drum 16 to wind the pull plate rope 17 until the movable plate 11 is separated from the exhaust assembly 8, and the pull plate rope 17 can be driven to rotate in the direction close to the exhaust assembly 8 by rotating the winding drum 16 until the movable plate 11 is propped against the exhaust assembly 8;
in order to provide kinetic energy for the winding drum 16, the side support 14 is 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 piece 13 connected with the movable plate 11 is disposed in the main air cover 3, the magnetic piece 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 air cover 3, which is close to the exhaust assembly 8, and the first magnet 19 is fixedly connected to the movable plate 11, at this time, when the movable plate 11 is in a vertical state, the movable plate 11 is adsorbed by 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, a sealing gasket 21 is fixedly connected to one side of the movable plate 11, which is close to the exhaust assembly 8, and the opening of the exhaust assembly 8 can be better sealed through material deformation of the sealing gasket 21.
Example 4:
referring to fig. 4-7, the specific structure of the exhaust assembly 8 is disclosed on the basis of embodiment 3, the exhaust assembly 8 includes a ventilation pipe 22 fixedly connected to the auxiliary wind scooper 7 and communicated with the auxiliary wind scooper 7, the inner diameter of the ventilation pipe 22 is smaller than the outer diameter of the movable plate 11 and smaller than the outer diameter of the sealing pad 21, a plurality of wind-guiding branch pipes 23 are assembled on the ventilation pipe 22, and an adjustable wind outlet head 24 is assembled at one end of the wind-guiding branch pipes 23 far away from the ventilation pipe 22;
when the hot air flows in the ventilation pipe 22, the heat energy contained in the hot air gradually decreases, and the adjustable air outlet head 24 which is farther from the auxiliary air guide 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 gradually increases from one end of the auxiliary air guiding cover 7 to one end far away from the auxiliary air guiding cover 7, that is, the opening area of the adjustable air outlet head 24 is in direct proportion to the air distance between the adjustable air outlet head 24 and the auxiliary air guiding cover 7.
Specifically, referring to fig. 6-7, the adjustable air outlet head 24 includes an air outlet head 25 fixedly connected to an end of the air guide branch pipe 23 far away from the ventilation pipe 22, a valve core 28 horizontally sliding 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 with the valve core 28 is fixedly connected to an outer side of the air outlet head 25 and is used for driving the valve core 28 to horizontally move, so as to adjust the size of the terminal air port.
The electric regulating 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 a valve core 28 is formed in the valve body shell 26, the valve core 28 can be completely contracted to the inner side of the valve body shell 26, the air outlet area of a tail end air port is regulated to be maximum, 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, the output end of the second electric push rod 27 is fixedly connected with the valve core 28, the valve core 28 can be driven to horizontally move by starting the second electric push rod 27, and the position of the valve core 28 is regulated.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (6)
1. The utility model provides a big-arch shelter warmhouse variable frequency heater, includes heater main part (1) and installs air-out mechanism (2) on heater main part (1), its characterized in that: the heater comprises a heater main body (1), wherein a PCB (printed circuit board), a frequency converter, a fan and a heater are arranged in the heater main body (1), an air outlet mechanism (2) is connected with the output end of the fan, and the air outlet quantity of the fan is in direct proportion to the air outlet area of the air outlet mechanism (2);
the air outlet mechanism (2) comprises a main air duct (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 duct (3) are fixedly connected to the main air duct (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 duct (3);
the small air outlet unit (4) comprises a secondary air guide cover (7) 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 secondary air guide cover (7) are fixedly connected to the secondary air guide cover (7), and a plurality of wind shielding valves (9) matched with the air exhaust assemblies (8) are further arranged in the secondary air guide cover (7);
the wind shielding valve (9) comprises a top plate (10) fixedly connected to the inner wall of the upper side of the main wind cover (3), one end of the top plate (10) close to the air exhaust assembly (8) is rotatably connected with a movable plate (11), and one end of the top plate (10) far away from the air exhaust assembly (8) is provided with a tension piece (12) connected with the movable plate (11);
the air exhaust assembly (8) comprises an air pipe (22) fixedly connected to the auxiliary air guide cover (7) and communicated with the auxiliary air guide cover (7), the inner diameter of the air 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 air pipe (22), one end, far away from the air pipe (22), of each air guide branch pipe (23) is provided with an adjustable air outlet head (24), and the opening area of the adjustable air outlet head (24) is in direct proportion to the air distance of the adjustable air outlet head (24) from the auxiliary air guide cover (7).
2. The variable frequency greenhouse heater according to claim 1, wherein: the sealing assembly comprises a wind shield (6) vertically and slidably connected inside a main wind cover (3), a first electric push rod (5) is assembled on the main wind cover (3), and the output end of the first electric push rod (5) is fixedly connected with the wind shield (6).
3. The variable frequency greenhouse heater according to claim 1, wherein: the tension piece (12) comprises a side support (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 support (14), a pulling plate rope (17) is wound on the outer side of the winding drum (16), a movable piece (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), a motor (15) is fixedly connected to the side support (14), and the output end of the motor (15) is fixedly connected with the axis of the winding drum (16).
4. The variable frequency greenhouse heater according to claim 1, wherein: the inside of leading fan housing (3) is provided with magnetic part (13) that link to each other with fly leaf (11), magnetic part (13) are including first magnetite (19) and second magnetite (20) that magnetism is inhaled each other, second magnetite (20) fixed connection is on leading fan housing (3) are close to one side inner wall of exhaust subassembly (8), first magnetite (19) fixed connection is on fly leaf (11).
5. The variable frequency greenhouse heater according to claim 1, wherein: the adjustable air outlet head (24) comprises an air outlet head (25) fixedly connected to one end, far away from the ventilating pipe (22), of the air guide branch pipe (23), a horizontally sliding valve core (28) is assembled on the air outlet head (25), a gap between the valve core (28) and the air outlet 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 outlet head (25).
6. The variable frequency greenhouse heater according to claim 5, wherein: the electric regulating 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 a valve core (28) is formed in the valve body shell (26), one end, 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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| Publication Number | Publication Date |
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| CN115968696A CN115968696A (en) | 2023-04-18 |
| CN115968696B true CN115968696B (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310278543.9A Active CN115968696B (en) | 2023-03-21 | 2023-03-21 | Frequency conversion heater for greenhouse |
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