RU2446673C2 - Cabinet of plant growth - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: cabinet contains a glased working chamber with a glased front door to observe the plants, light sources, located on the outer side of the working chamber, an air preparation unit and a control unit. The inner surface of the door is equipped with a mirror coating with a given light-transmission factor.

EFFECT: increased lighting is provided inside the working chamber without using extra energy consumption.

2 cl, 1 tbl

Description

The invention relates to the field of laboratory equipment for conducting research work with biological objects (plants, insects, etc.) in an artificial climate. It can be used to study the influence of climatic factors on the processes occurring in biological objects, as well as to conduct breeding work with plants, to develop measures to protect plants from pests with the help of entomophagous insects, etc.

Known cabinets, installations, plant growth chambers differ mainly in the number of reproducible climatic factors from the following: light, temperature, humidity, carbon dioxide content, air velocity [1, 2]. The main components of such devices are a glazed working chamber with useful space for the studied objects, light sources, an air preparation unit, and a control unit [1]. Due to the fact that when the light sources are located inside the working chamber, all 100% of their installed power is converted to heat, the most widely used are devices with the installation of light sources behind the glass enclosure of the working chamber. With this arrangement, only about 35% of the energy penetrates into the working chamber [2]. The closest analogue of the invention is the installation of a vegetative microclimate [3], containing a glazed working chamber with a glazed front door for monitoring plants, light sources with mirror reflectors located on the outside of the working chamber, an air preparation unit and a control unit. Excess heat from the lamps is removed by the air conditioning unit. One of the most important climatic factors is light, since photosynthesis in plants leads to their vital activity. Therefore, one of the main requirements for artificial climate devices for plants is to provide the necessary illumination of the working chamber. In known devices, this is achieved by increasing the number of light sources, that is, by increasing the energy consumption, which is their disadvantage.

The aim of the invention is to increase the illumination of plants without additional energy costs.

This goal is achieved by the fact that in a plant growth cabinet containing a glazed working chamber with a glazed front door for monitoring plants, light sources located on the outside of the working chamber, an air preparation unit and a control unit, the inner surface of the door is provided with a mirror coating with a given coefficient light transmission, which is made in the form of a glued polymer mirror film. Illumination in the working chamber is increased by reducing the loss of light radiation through the front door. And due to the fact that the mirror film partially transmits light, the possibility of observing plants is preserved without opening the door and thus not violating the established temperature-wet regime in the working chamber. Obviously, there is no additional energy cost in this case, since there are no additional energy consumers.

Figure 1 shows a cabinet of plant growth; figure 2 is the same with the door open; figure 3 is the same, with a view of the sensors.

The plant growth cabinet contains a glazed working chamber 1 with a glazed front door 2, on the inside of which a mirror-like polymer film 3 is glued. Inside the working chamber there are four removable lattice shelves 4 for plant installation. On the outside of the working chamber on the ceiling and three sides (two side and one back) there are light sources - seven lamps 5 with fluorescent lamps. The working chamber is installed on the air preparation unit 6, which contains actuators: air conditioning (cooler), heater and ultrasonic humidifier. The ceiling of the air preparation unit is the bottom of the working chamber after installing it on the air preparation unit and has two longitudinal slots along the sides for air circulation. A control unit 7 is mounted in the air preparation unit, the main elements of which are a temperature, humidity, lighting controller 8 programmable in time and temperature and humidity sensors 9 and 10.

The operation of the plant growth cabinet consists in maintaining the specified microclimate parameters in the working chamber 1 with the help of lamps 5, an air conditioner, a heater, a humidifier of the air preparation unit 6, which are turned on and off under the control of controller 8 depending on the temperature, humidity, and on-time set by the program ( off) fixtures 5 and the current values of temperature, humidity and time coming from the temperature sensor 9, humidity sensor 10 and controller timer 8. Illumination in the working chamber with it is given by the lamps of the luminaires 5 and the light reflected from the mirror polymer film 3 on the front door 2. The air circulates under the influence of the fans of the air conditioner or the heater of the air preparation unit 6.

The invention can be implemented using the following components. The frames of the working chamber 1 and the removable door 2 can be made of painted aluminum profile type CONSTA-SIB. Glazing from window glass with a thickness of 4 mm with polished edges using U-shaped plastic seals. As luminaires 5, standard TL418-1A types can be used for four 18 W fluorescent lamps with a special emission spectrum for plants of the L18WW / 77 FLUORA type. To reproduce the necessary values of temperature, humidity and illumination, the MPR51-SH4 OVEN microprocessor-based program controller, two resistance thermometers ТС 034-50 М ОВЕН (one of them for measuring moisture by the psychrometric method) and actuators: air conditioner type LWJ0561ACG (LG, South Korea), the REN 2036 fan heater and a humidifier type PUH 1104 (both firms POLARIS, USA). Mirror coating on the inner surface of the door can be done by gluing a polymer mirror film of the Llumar trademark, for example, type R15GSRCDF (gray, with a light transmission of 15%). In addition to increasing the illumination in the working chamber, the mirror film reduces the negative effect of bright light from the rear lamps through the door on the eyes of the researcher conducting experiments with plants.

The results of measurements of illumination on the shelves of the working chamber using a TKA-LUX meter with and without mirror coating on the door are shown in the table.

Table Illumination values in the center of the shelves of the working chamber Shelf number 1 (bottom) 2 3 4 (top) Illuminated
nost, lx mirrored door 6500 6190 8750 7870 without mirror coating 5530 5310 7900 7150

The table shows that with a mirror coating of the door, the illumination increases by 10-17%, depending on the height of the control point.

Information sources

1. Sadovoy A.F., Sovetov V.P. Artificial climate installations. - M .: Agropromizdat, 1985 .-- 72 p., Ill.

2. Kurets V.K., Popov E.G. Statistical modeling of a plant-environment relationship system. - L .: Nauka, 1991 .-- 152 p.

3. Patent for industrial design No. 544275. Installation of a microclimate vegetative.

Claims (2)

1. Plant growth cabinet comprising a glazed working chamber with a glazed front door for monitoring plants, light sources located on the outside of the working chamber, an air preparation unit and a control unit, characterized in that the inner surface of the door is provided with a mirror coating with a predetermined transmittance Sveta. 2. The plant growth cabinet according to claim 1, characterized in that the mirror coating is made in the form of a glued polymer mirror film.

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