Greenhouse circulating type heating furnace

Abstract

The invention relates to a greenhouse circulating type heating furnace, which comprises a furnace body and a combustion chamber, wherein a shell of the furnace body is of a double-layer hollow structure; when in operation, cold air is continuously input to the hollow shell of the furnace body from an outer air inlet, is then fed into a coiled steel pipe of the furnace body through an inner air inlet so as to be heated by heat generated byin the combustion chamber, and the cold air is continuously delivered to outside through an air outlet after being heated quickly; and indoor radiating pipelines uniformly transmits heated hot gas to every corner of a greenhouse, so that the greenhouse achieves the aims of warming and insulating the greenhouse can be achieved. The cold air firstly enters the hollow shell and then enters the heated steep pipe through the air inlet, so that the separation of cold air and hot air is ensured, direct heat exchange is avoided, the heating efficiency is greatly improved, the heating manner is simple, the floor space is small, and the cost is low.

Description

technical field [0001] The invention relates to a greenhouse circulating heating furnace, which belongs to the field of gardening facilities. Background technique [0002] The area of ​​solar greenhouses in northern my country has developed rapidly in recent years, and has become one of the main channels for farmers to increase their income. However, in most parts of northern my country, the lowest temperature in the coldest season in winter is below minus 20 degrees. It has been proved by the practice of greenhouse production in winter , the ability of solar greenhouses to resist low temperature and freezing cold and other disastrous weather is limited. Although the sunlight stores heat during the day, the temperature drop at night will cause the indoor temperature to generally only maintain around 2-5°C in the second half of the night. If there is a cold wave, the temperature will be even higher. It is extremely harmful to the growth and development of crops, causing the gro...

AI Technical Summary

Problems solved by technology

[0002] The area of ​​solar greenhouses in northern my country has developed rapidly in recent years, and has become one of the main channels for farmers to increase their income. However, in most parts of northern my country, the lowest temperature in the coldest season in winter is below minus 20 degrees. It has been proved by the practice of greenhouse production in winter , the ability of solar greenhouses to resist low temperature and freezing cold and other disastrous weather is limited. Although the sunlight stores heat during the day, the temperature drop at night will cause the indoor temperature to generally only maintain around 2-5°C in the second half of the night. If there is a cold wave, the temperature will be even higher. Low, it is extremely harmful to the growth and development of crops, causing the growth of vegetables in solar greenhouses to be hindered to varying degrees, especially fruit vegetables are difficult to bloom and set fruits normally, seriously affecting production and market supply

[0003] Heating systems have been used in the prior art, but simple steam heating or boiler heating is mostly used, which occupies a large area and costs high, and is not suitable for use in greenhouses

Some use hot blast stoves, less heat exchange, low efficiency and high cost

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