Greenhouse air temperature adjusting system and adjusting method

A temperature regulation and greenhouse technology, which is applied in air-conditioning systems, greenhouse cultivation, botany equipment and methods, etc., can solve the problems of heat pumps with less heating capacity and unable to meet the heating load of greenhouses, poor defrosting accuracy, and low heating coefficient of performance, etc. Achieve significant heating and dehumidification effects, easy installation and construction, and prolong the effect of heat collection time

Active Publication Date: 2015-09-16
北京市农林科学院智能装备技术研究中心
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Problems solved by technology

Moreover, the application of air source heat pumps is greatly affected by climatic conditions, and they cannot work normally in winter in cold regions. The main problems are tha

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  • Greenhouse air temperature adjusting system and adjusting method
  • Greenhouse air temperature adjusting system and adjusting method
  • Greenhouse air temperature adjusting system and adjusting method

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[0029] In the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer" The orientation or positional relationship of other indications is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the pointed machine or element must have a specific orientation and The azimuth structure and operation cannot be understood as a limitation of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "installation", "connected" and "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be mechanically or electrically connected; it can be directly conn...

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Abstract

The invention relates to the technical field of greenhouse planting, and discloses a greenhouse air temperature adjusting system. The greenhouse air temperature adjusting system comprises a compressor, a four-way reversing valve, a fin type heat exchanger, an expansion valve, a double-pipe heat exchanger, a surface air cooler, a circulating pump and a liquid storage pond. The compressor is sequentially connected with the double-pipe heat exchanger, the expansion valve and the fin type heat exchanger through the four-way reversing valve to form a heat pump circulating unit, a centrifugal fan is arranged at one end of the fin type heat exchanger, the other end of the fin type heat exchanger is connected with the surface air cooler, one end of the double-pipe heat exchanger and one end of the surface air cooler are communicated with the circulating pump, the other end of the double-pipe heat exchanger and the other end of the surface air cooler are communicated with the liquid storage pond, and the circulating pump is communicated with the liquid storage pond. In the greenhouse air temperature adjusting system, the heat pump circulating unit is utilized for collecting heat, the surface air cooler and the heat pump circulating unit are used for heat radiation, heat collecting efficiency can be improved, heat collecting time can be prolonged, the utilization rate of surplus air heat energy in a solar greenhouse can be greatly improved, and running is stable and reliable.

Description

technical field [0001] The invention relates to the technical field of greenhouse planting, in particular to a greenhouse temperature regulation system, in particular to a greenhouse temperature regulation system capable of improving the utilization efficiency of air heat energy in a solar greenhouse and a regulation method thereof. Background technique [0002] China's solar greenhouse uses solar radiation as the main energy source, and is a representative of energy-saving, high-efficiency, and low-cost greenhouse structure types. By the end of 2012, the national solar greenhouse area was 964,000 hectares, accounting for about 24.9% of the total facility cultivation area. Due to the excellent heat preservation and heat storage performance of the solar greenhouse, between 35° and 42° north latitude in my country, the production of temperature-loving vegetables can generally be carried out without heating in winter. However, for solar greenhouses that have been used for a lo...

Claims

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Application Information

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IPC IPC(8): F25B13/00F25B41/00A01G9/24
CPCA01G9/246F24F5/001F25B13/00F25B2313/02741Y02A40/25Y02P60/14
Inventor 孙维拓郭文忠徐凡李银坤王利春陈红贾冬冬聂铭君薛绪掌陈菲
Owner 北京市农林科学院智能装备技术研究中心
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