SU682172A1 - Device for heating trees - Google Patents

Description

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The invention relates to the field of agricultural devices used for fruit and ornamental trees from unpleasant climatic influences.

A device for heating air is known, consisting of a thin-walled cylinder filled with a heat-transfer fluid and having a distributor and an upstream and upward flow 1.

However, such a device needs to be periodically relocated to a new place as the tree grows, which is associated with root disturbance and additional labor costs.

The aim of the invention is to provide effective protection of tree trunks over a long period of life of a tree without replacing and repacking the protective device.

The goal is achieved by the fact that the cylinder is made curved, and in its inclined part between the vertical sections there is a plate with openings of a material with low thermal conductivity.

The drawing shows the proposed device, a longitudinal section.

In the cavity of cylinder 1, completely zapolppenoy liquid non-freezing Tenvionocntel, in the nakloinoy its parts set plate 2 at the same angle of inclination a. Plastpna 2 is made of heat-insulating material with a width, the ravia inner cylinder diameter, and for the equal length of its inclined part. P, 1astina has openings at the tips. The plate is fixed by two inserts - pins 3. The upper part of the device from the outside may have a system of longitudinal ribs 4, which increase the heat transfer from the surface. The distance between the axes of the upper and lower parallel parts of the device is chosen to be sufficient for its operation without rearrangement.

The device is installed from the south or southwest side of the trunk. The lower part of it is repaired before it is introduced vertically into the soil in such a way that the upper heat transfer part is in the immediate vicinity of the personal part in contact with the trunk of the tree. In the primary trunk and the upper part of the device, the shell is insulated.

As soon as the air temperature becomes lower than the soil temperature, heat transfer from the lower part of the device to the upper one begins due to the circulation of the heat-transfer fluid in the hollow tube. Than

the stronger the decrease in air temperature and, consequently, the greater the difference in air and soil temperatures, the more intense the transfer of heat upward. Heating of a tree trunk in winter is carried out through the direct contact of the upper part of the device with the trunk and by heating the air in the volume bounded by the cover of the shelter. The device operates in the auto-regulation mode, since the circulation rate of the coolant is determined only by the value of the difference in air temperature and night.

The use of the device is most effective in areas where in winter the soil temperature is high enough and the climate prevailing climatic factor is sharp fluctuations in air temperature, and increases the temperature of the stems by 10-12 ° C at air temperatures from -22 to -23 ° WITH.

Claims (1)

Invention Formula A device for heating trees, comprising a housing made in the form of a cylinder filled with antifreeze-free heat transfer fluid, characterized in that, in order to simplify operation and increase heating efficiency, the cylinder is curved and a plate with holes made of vertical sections is placed between its vertical sections. material with low thermal conductivity. Sources of information taken into account during the examination I. USSR Copyright Certificate № 443649, cl. A 01G 9/24, 1972.