CN110972372A - High-pressure sodium lamp for plant cultivation room - Google Patents
High-pressure sodium lamp for plant cultivation room Download PDFInfo
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- CN110972372A CN110972372A CN201911370357.8A CN201911370357A CN110972372A CN 110972372 A CN110972372 A CN 110972372A CN 201911370357 A CN201911370357 A CN 201911370357A CN 110972372 A CN110972372 A CN 110972372A
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Abstract
The invention relates to a high-pressure sodium lamp for a plant cultivation chamber, which comprises a lamp set arranged in the plant cultivation chamber and an electronic component set arranged outside the plant cultivation chamber, wherein the lamp set is connected with the electronic component set, the lamp set comprises a high-temperature isolation cover and a high-pressure sodium lamp tube arranged in the high-temperature isolation cover, the lamp set is connected with the electronic component set through a high-temperature-resistant lead braided by silica gel, and the electronic component set is arranged in a ventilation chamber. Compared with the prior art, the invention has the advantages of long service life of the device and the like.
Description
Technical Field
The invention relates to the field of high-pressure sodium lamps, in particular to a high-pressure sodium lamp for a plant culture chamber.
Background
At present, in a conventional vegetable and fruit planting greenhouse and a large-scale walk-in plant cultivation room, plant light supplement lamps such as a high-pressure sodium lamp and a high-pressure metal halide lamp are adopted. The lamps have high luminous efficiency and high light output, can accelerate the growth of crops, can increase the blue light part by 30 percent by adjusting the spectrum, and provides the required red wave energy and blue wave energy for the growth of plants. The ideal combination of balanced spectral distribution and high light output shortens the growth cycle of crops by 25 percent, improves the yield by 20 percent, and ensures that fruits and vegetables have more moist colors and more elegant shapes.
The high-pressure sodium lamp that this kind of plant cultivation room adopted in domestic adopts integral type sodium lamp group mostly, is about to components and parts such as high-pressure sodium lamp fluorescent tube, condenser, trigger, ballast encapsulate in the iron-box, connects high-pressure sodium lamp fluorescent tube together with the lamp stand simultaneously, together with the furred ceiling design, as a whole supply together. From the objective function perspective, although this design can satisfy high-pressure sodium lamp daily use, to carrying out scientific research experiment, when normal production environment, can lead to sodium lamp banks's life to reduce by a wide margin because long-time high low temperature difference offset. The reason is that when the sodium lamp set works, the sodium lamp tube can generate local high temperature, high-temperature airflow is diffused upwards, and the temperature enters the installation box wrapped with the capacitor, the trigger and the ballast through the metal mechanical connecting rod and air convection. Although the mounting box is already provided with the radiating fins during design and is provided with the holes for radiating heat, the heat cannot be effectively radiated in the actual use process, particularly in the environment with poor ventilation conditions such as a plant cultivation room, and in addition, the electronic components, particularly the ballast, generate heat by itself to more than 90 ℃ during working, so that the temperature in the box is maintained to more than 90 ℃ for a long time. And the general temperature range of the plant culture room for adapting to the growth of plants is between 10 ℃ and 25 ℃. The hot air and the cold air are oppositely flushed, so that the service life of components of the sodium lamp set is greatly reduced.
Taking a 400W high-pressure sodium lamp for plant growth on the market as an example, the design life is 24000 hours, and the lamp can be used for about 4 years according to 16 hours of daily lighting. In the actual use process, most of the actual service life can only reach 2 years under the environment of about 25 ℃ of plant growth, and the difference with the designed service life is much.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing a high pressure sodium lamp for a plant growth chamber with an improved lifetime.
The purpose of the invention can be realized by the following technical scheme:
a high-pressure sodium lamp for a plant cultivation chamber comprises a lamp set arranged in the plant cultivation chamber and an electronic component set arranged outside the plant cultivation chamber, wherein the lamp set is connected with the electronic component set.
Further, the lamp set comprises a high-temperature isolation cover and a high-pressure sodium lamp tube arranged in the high-temperature isolation cover.
Furthermore, the lamp set is connected with the electronic component set through a high-temperature-resistant lead woven by silica gel.
Further, the electronic component device group is provided in a ventilation chamber.
Further, the lamp set comprises a high-voltage sodium lamp tube, the electronic component assembly comprises a trigger, a ballast and a power interface which are arranged on the insulating circuit board, the power interface, the ballast and the high-voltage sodium lamp tube form a series circuit, and the trigger is connected to two ends of the high-voltage sodium lamp tube in parallel.
Specifically, under the condition of constant power supply, in order to ensure that the lamp bulb works stably, a ballast device with positive resistance characteristic is connected in series in the circuit to balance the negative resistance characteristic and stabilize the working current. Meanwhile, the lighting circuit of the high-voltage sodium lamp is a nonlinear circuit with low power factor, so that a compensation capacitor is connected to the network to improve the power factor of the network. Meanwhile, the two ends of the high-pressure sodium lamp tube are connected with the trigger in parallel, so that the high-pressure sodium lamp tube can work normally, and the trigger has the advantages of no mechanical contact, good reliability, small volume, light weight, convenience in use and the like.
Further, the electronic component device group further comprises a capacitor arranged on the insulating circuit board, and the capacitor is connected in parallel to two ends of the power interface.
Furthermore, a plurality of lamp sets are arranged in the plant cultivation chamber, and the lamp sets are arranged in the plant cultivation chamber according to a square matrix.
Furthermore, a plurality of lamp sets are arranged in the plant cultivation room, each lamp set is connected with one electronic component group, and the electronic component groups are arranged in the insulating circuit board at two centimeters intervals.
Furthermore, a plurality of high-voltage sodium lamps are arranged in the plant cultivation chamber, each high-voltage sodium lamp is connected with one electronic component group, and the electronic component groups are arranged in the insulating circuit board at two cm intervals.
Further, the lamp set comprises a high-voltage sodium lamp tube, the electronic component assembly comprises starting circuits connected in parallel at two ends of the high-voltage sodium lamp tube, and each starting circuit comprises a three-end electronic trigger and a three-end ballast.
Due to the limitations of some use occasions, the distance between the high-voltage sodium lamp tube and the ballast and the trigger is very long, so that the pulse high voltage output by the trigger is greatly lost when being transmitted to the high-voltage sodium lamp tube, and the two ends of the bulb cannot be started due to low voltage. In this case, a starting circuit composed of a three-terminal electronic trigger and a three-terminal ballast can be used, and the circuit and the starting characteristics can be improved. The circuit is characterized in that: the inductance value is increased by using the inductance coil of the ballast as a pulse transformer, the discharge duration is prolonged, and the starting of light is facilitated.
Further, the starting circuit takes an inductance coil of the three-terminal ballast as a pulse transformer.
Compared with the prior art, the invention has the following advantages:
(1) the sodium lamp bank is redesigned, so that the lamp tube is separated from the electronic component, and the modularization is clearer.
(2) In the culture chamber, the high-pressure sodium lamp set only keeps the lamp tubes, and the lamp tubes generate high temperature when working, flow upwards along with airflow into the air return opening and are not gathered around the lamp tubes any more, so that the working environment of the lamp tubes is ensured to be improved.
(3) The heating electronic components are placed in the ventilation chamber, and are released from the original box-packed structure, so that heat dissipation and ventilation are facilitated; the newly designed equipment is tested by using the temperature measuring gun, and the surface temperature of the component is about 70 ℃ and is greatly reduced compared with the original temperature which exceeds 90 ℃.
(4) The electronic component device group arranged in the ventilation chamber is in a constant room temperature environment and is not impacted by violent cold and hot air flows, so that the service life of the device is prolonged.
(5) The service life of the high-pressure sodium lamp can be close to the design life, and can reach 4 years.
Drawings
FIG. 1 is a schematic view of a high pressure sodium lamp according to the present invention;
FIG. 2 is a schematic diagram of the electrical connection of the high pressure sodium lamp of the present invention;
fig. 3 is a schematic diagram of a starting circuit composed of the three-terminal electronic trigger and the three-terminal ballast of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
As shown in fig. 1 and fig. 2, the present embodiment is a high-pressure sodium lamp for a plant cultivation room, and is used for prolonging the service life of a high-pressure sodium lamp set in the plant cultivation room by adopting a remote triggering manner.
One, device structure
The high-pressure sodium lamp comprises a lamp set arranged in the plant cultivation chamber 1 and an electronic component device group arranged in the ventilation chamber 2, the lamp set comprises a high-temperature isolation cover and a high-pressure sodium lamp tube 3, and the high-pressure sodium lamp tube 3 is connected to the electronic component device group of the ventilation chamber through a high-temperature resistant wire silica gel woven mica wire with the square length of 4. The electronic component device group mainly comprises a capacitor 6, a trigger 5 and a ballast 4 which can be arranged in an insulating circuit board according to the interval of 2 cm, 16 lamp sets are arranged in the plant cultivation room in the embodiment, the lamp sets can be distributed according to 4-by-4 matrix, and marks are made on wires, so that the wiring of indoor high-voltage sodium lamp heads is facilitated.
As described above, in this embodiment, the electronic components and the sodium lamp tube are separated, the original packaged components such as the capacitor, the trigger, and the ballast are removed from the integrated lamp set, the original integrated lamp set is designed and disassembled into the high-voltage sodium lamp light-emitting device and the power supply and distribution component set, and the high-temperature-resistant wires are woven by using silica gel to meet the daily use temperature conditions.
Second, the working principle
When the high-pressure sodium lamp is powered on and started, the high-pressure sodium lamp works in an arc discharge state like other gas discharge bulbs, and when the current of the bulb rises, the voltage of the bulb falls. Under the condition of constant power supply, in order to ensure the stable operation of the lamp bulb, a ballast component with positive resistance characteristic is connected in series in the circuit to balance the negative resistance characteristic and stabilize the operating current. Meanwhile, the lighting circuit of the high-voltage sodium lamp is a nonlinear circuit with low power factor, so that a compensation capacitor is connected to the network to improve the power factor of the network. Meanwhile, the two ends of the high-pressure sodium lamp tube are connected with the trigger in parallel, so that the high-pressure sodium lamp tube can work normally, and the trigger has the advantages of no mechanical contact, good reliability, small volume, light weight, convenience in use and the like. Due to the limitations of some use occasions, the distance between the high-voltage sodium lamp tube and the ballast and the trigger is very long, so that the pulse high voltage output by the trigger is greatly lost when being transmitted to the high-voltage sodium lamp tube, and the two ends of the bulb cannot be started due to low voltage. In this case, a starting circuit composed of a three-terminal electronic trigger and a three-terminal ballast can be used, and the circuit and the starting characteristics can be improved. The circuit is characterized in that: the inductance value is increased by using the inductance coil of the ballast as a pulse transformer, the discharge duration is prolonged, and the starting of light is facilitated.
The following describes a starting circuit composed of a three-terminal electronic trigger and a three-terminal ballast:
as shown in fig. 3, the starting circuit composed of the three-terminal electronic trigger and the three-terminal ballast includes a B terminal, an Lp terminal and an N terminal, the B terminal is connected with the output line of the three-terminal ballast, the N terminal is led out two lines, one line is connected with the power supply, the other line is connected with one end of the high-voltage sodium lamp, and the Lp terminal is connected with the other end of the high-voltage sodium lamp.
The end B and the end N form a loop, and a first resistor R1, a second resistor R2, a third resistor R3, a first bidirectional thyristor D1 and a fourth resistor R4 are connected in series in the loop from the end B to the end N in sequence. A first capacitor C1 is connected in parallel with two ends of the first resistor R1; a first inductor L1, a second inductor L2 and a second triac D2 are sequentially connected in parallel at two ends of the second resistor R2, the third resistor R3 and the first triac D1; a third capacitor C3 is connected in parallel with two ends of the third resistor R3, the first bidirectional thyristor D1 and the fourth resistor R4; a second capacitor C2 is connected in parallel at two ends of the second resistor R2, the third resistor R3, the first bidirectional thyristor D1 and the fourth resistor R4;
the starting circuit further comprises a third inductor L3, a fourth inductor L4 and a fifth inductor L5 which are sequentially connected in series, and the second inductor, the third inductor L3, the fourth inductor L4 and the fifth inductor L5 which are sequentially connected in series form a boosting transformer.
In this embodiment, the resistance of the first resistor R1 is 154 ohms, the resistance of the second resistor R2 is 224 ohms, the resistance of the third resistor R3 is 220 ohms, the resistance of the fourth resistor R4 is 470 ohms, the capacitance of the first capacitor C1 is 334 farad, the capacitance of the second capacitor C2 is 224 farad, the capacitance of the third capacitor C3 is 473 farad, the inductance of the first inductor is 33 microhenries, the second inductor is 3T, the third inductor L3, the fourth inductor L4 and the fifth inductor L5 are all 24T, where nT is n turns of hollow coil, and n is 3 or 24.
The starting circuit adopts a bidirectional thyristor, a pulse boosting transformer and a resistance-capacitance electronic basic element to form a boosting transformer, 50HZ alternating current which is limited and output by the ballast is transmitted to a brake inlet tube for secondary boosting, and the high-frequency alternating current is changed into 4-5 KV.
The starting circuit has the working principle that high-frequency 4-5 KV high voltage generated by a trigger is applied to two ends of a high-voltage sodium lamp motor, high-frequency breakdown is generated between the two ends, inert gas or metal halide in a lamp tube is subjected to ionization discharge, and high-frequency current of the lamp tube is broken down to heat an electrode, so that the surface of the electrode is heated, and hot electron emission is generated. If the high frequency current is sufficiently large and stable, the lamp can be ignited.
Example 2
This example is substantially the same as example 1, except that 4 sets of lights are installed in plant growth chamber 1 and are arranged in a 2 x 2 matrix.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The high-pressure sodium lamp for the plant cultivation chamber is characterized by comprising a lamp set arranged in the plant cultivation chamber and an electronic component set arranged outside the plant cultivation chamber, wherein the lamp set is connected with the electronic component set.
2. The high-pressure sodium lamp for the plant cultivation room as claimed in claim 1, wherein the lamp set comprises a high-temperature shielding case and a high-pressure sodium lamp tube arranged in the high-temperature shielding case.
3. The high-pressure sodium lamp for the plant cultivation room as claimed in claim 1, wherein the lamp set is connected to the electronic component set through a high-temperature-resistant wire woven by silica gel.
4. The high pressure sodium lamp for a plant growth chamber of claim 1, wherein the set of electronic components is disposed within a plenum.
5. The high-pressure sodium lamp for the plant cultivation room as claimed in claim 1, wherein the lamp set comprises a high-pressure sodium lamp tube, the electronic component set comprises a trigger, a ballast and a power interface, the trigger, the ballast and the high-pressure sodium lamp tube are arranged on an insulating circuit board, the power interface, the ballast and the high-pressure sodium lamp tube form a series circuit, and the trigger is connected in parallel with two ends of the high-pressure sodium lamp tube.
6. The high pressure sodium lamp for a plant room of claim 5, wherein the set of electronic components further comprises a capacitor disposed on the insulating circuit board and connected in parallel across the power interface.
7. The high pressure sodium lamp for a plant growing chamber of claim 1 wherein a plurality of light fixtures are provided within the plant growing chamber, the light fixtures being arranged in a square matrix within the plant growing chamber.
8. The high pressure sodium lamp for plant cultivation room as claimed in claim 1, wherein a plurality of lamp sets are provided in the plant cultivation room, each of the lamp sets is connected with a respective electronic component set, and the electronic component sets are arranged in the insulating circuit board at two cm intervals.
9. The high-pressure sodium lamp for the plant cultivation room as claimed in claim 1, wherein the lamp set comprises a high-pressure sodium lamp tube, the electronic component set comprises a starting circuit connected in parallel to two ends of the high-pressure sodium lamp tube, and the starting circuit comprises a three-terminal electronic trigger and a three-terminal ballast.
10. The high pressure sodium lamp for a plant room of claim 9, wherein the starting circuit uses an inductor of the three-terminal ballast as a pulse transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911370357.8A CN110972372A (en) | 2019-12-26 | 2019-12-26 | High-pressure sodium lamp for plant cultivation room |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911370357.8A CN110972372A (en) | 2019-12-26 | 2019-12-26 | High-pressure sodium lamp for plant cultivation room |
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| CN110972372A true CN110972372A (en) | 2020-04-07 |
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| CN201911370357.8A Pending CN110972372A (en) | 2019-12-26 | 2019-12-26 | High-pressure sodium lamp for plant cultivation room |
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Application publication date: 20200407 |