| 摘要 |
<p>The invention refers to the agricultural field and mainly may be used for the lighting, radiation and heating of plants in portable greenhouses by electricity. The aim of the invention is to improve the switching on conditions of the fluorescent light bulb, to multiply the number of optical radiance variants and create optimal greenhouse microclimate. The essence of the invention is that in contradiction to a well known device containing fluorescent light bulbs and ballast incandescent bulbs it is connected to a phase of neutral voltage of the system and enables to realise variants of optical radiance in cases when the fluorescent light bulb and all ballast incandescent bulbs are connected in a mixed connection and are lit, when fluorescent light bulb and ballast lighting incandescent bulb is lit and when only two ballast incandescent bulbs which produce heat and are connected in parallel are lit. In the new device there is established electrical scheme whose main advantage is the possibility to over-commute lighting fluorescent light bulb repeatedly for the development of necessary lighting, radiation and heating regimes of plants. The improved running of the fluorescent light bulbs from the voltage line widens its classification diapason as well as multiplies variants of modifiable optical radiance with spectrally dosed apparent light and/or spectrums of infrared radiation. Since the fluorescent light bulbs and incandescent bulbs are connected in autonomous blocks (fig.1.) joint electrical scheme of the greenhouse allows manipulate with the regimes described above in a sufficiently broad diapason in order to create optimal microclimate conditions for the development of different plants.</p> |
