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Patent Searching and Data


Title:
SCIENTIFIC RESEARCH GREENHOUSE WET CURTAIN COOLING DEVICE AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2020/143223
Kind Code:
A1
Abstract:
A scientific research greenhouse wet curtain cooling device and a control method. A wet curtain of the device adopts a box-type design. An air duct (16) is connected to the bottom of a greenhouse (1), a grid plate (25) is provided in the greenhouse to divide the greenhouse (1) into upper and lower parts. A guide net (4) covers the vertical surface of the box-type wet curtain, and a return tank (15) is provided below the wet curtain. The return tank (15) adopts a large cornice design, so that the dripping of water leaked from the wet curtain is effectively prevented. The feedforward PID control is adopted, and by means of expected feedforward of indoor temperature, the accuracy of natural ventilation cooling and wet curtain fan cooling conversion and the stability of equipment operation are improved. After the device is started, the fan (17) adopts variable frequency control, and the quantity of fresh air flowing into the greenhouse (1) is adjusted to achieve the purpose of precisely regulating indoor temperature of the greenhouse. By means of the bottom positive-pressure air supply design, the effective use area of the greenhouse is increased, and the introduction of greenhouse crop pathogeny and insect sources is reduced.

Inventors:
QI ZHENYU (CN)
ZHOU JIE (CN)
JIN RONG (CN)
HU WEIZHEN (CN)
KONG DEDONG (CN)
HONG ZHIQI (CN)
LU BINGTAO (CN)
WANG HUIQUAN (CN)
HU MEIHUA (CN)
CAI LINSHENG (CN)
Application Number:
PCT/CN2019/099154
Publication Date:
July 16, 2020
Filing Date:
August 03, 2019
Export Citation:
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Assignee:
UNIV ZHEJIANG (CN)
International Classes:
A01G9/24; F24F5/00; F24F7/007
Foreign References:
CN109681994A2019-04-26
CN107223495A2017-10-03
CN106718351A2017-05-31
CN108762063A2018-11-06
JP2015006133A2015-01-15
CN105830819A2016-08-10
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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