SU625197A1

SU625197A1 - Method of control of microclimate in room

Info

Publication number: SU625197A1
Application number: SU762421953A
Authority: SU
Inventors: Вячеслав Иванович Жильцов; Борис Васильевич Антропов; Анатолий Иванович Зыков
Original assignee: Глебовское Ордена Трудового Красного Знамени Производственное Птицеводческое Объединение
Priority date: 1976-11-17
Filing date: 1976-11-17
Publication date: 1978-09-25

Description

Изобретение относитс к области регулировани микроклимата в помещени х, преимущественно животноводческих.The invention relates to the field of microclimate control in rooms, mainly livestock.

Известен способ регулировани микроклимата в помещени х, по которому регулирование микроклимата осуществл етс путем изменени производительности приточно-выт жной Вентил ции l 7.There is a known method of controlling the microclimate in rooms, according to which the regulation of the microclimate is carried out by changing the capacity of the supply and exhaust Ventilation l 7.

Наиболее близким по технической сущности к изобретению вл етс способ регулировани микроклимата в помещении путем изменени производительностей приточной и выт жной вентил ции и темперэгтурно-влажностной обработки приточного воздуха 2j,The closest to the technical essence of the invention is a method of controlling the microclimate in a room by varying the capacities of supply and exhaust ventilation and temperature and humidity treatment of the supply air 2j,

Однако в известных способах производительность приточных и выт жных вентил торов измен ют одновременно от общего сигнала управлени , пропорционального отклонению температуры от заданного значени , а это снижает точность регулировани параметров макроклимата . Ввиду этого в помещении образуетс или отрицательное избыточное давпение, или положительное избыточноеHowever, in the known methods, the performance of the supply and exhaust fans varies simultaneously from a common control signal proportional to the temperature deviation from a predetermined value, and this reduces the control accuracy of the macroclimate parameters. In view of this, either excessive overpressure or positive excess is generated indoors.

давление, если производительность приточной вентил ции превышает производительность выт жной вентил ции. Отрицательное избыточное давление обра: етс иpressure if supply air capacity exceeds exhaust air capacity. Negative overpressure is generated and

при равенстве производительности притока и выт жки за счет превышени температуры воздуха внутри помещени над температу)ро воздуха вне помещени . Это приводит к образованшо местных сквозн ков , нарушающих равномерность температурно-влажностного и газового режима по объему помещени .with equal performance of the inflow and exhaust due to the excess of the air temperature inside the room above the temperature of the air outside the room. This leads to the formation of local bridges that violate the uniformity of temperature, humidity and gas conditions throughout the volume of the room.

Целью изобретени вл етс повыщенне точности регулировани . The aim of the invention is to increase the regulation accuracy.

Достигаетс это тем, что производительность приточной вентил ции измен ют пропорционально избыточному давленикС воздуха в помещении и скорости изменени производительности выт жной вентил ции .This is achieved by the fact that the performance of the intake ventilation varies in proportion to the overpressure of the air in the room and the rate of change in the performance of the exhaust ventilation.

Это позвол ет компенсировать инерционность в канале управлени выт жной вентил цией.This makes it possible to compensate for the inertia in the exhaust ventilation control channel.

На чертеже изображена блок-схемаThe drawing shows a block diagram

Claims

devices for implementing the method. The device contains a temperature sensor 1, a relative humidity sensor 2, an indoor air pollution gas sensor 3, a logic unit 4, a heater 5, a humidifier 6, a unit 7 for controlling the performance of an elec- trical | erventil t6rov {for example, a thyristor voltage regulator), electric fans 8, indoor air pressure sensor 9, outdoor air pressure sensor 1O, equation block 11, unit 12 for controlling the performance of supply fan-type electric fans, supply fan-electric fans 13 with filters clearing air, differentiation unit 14, The signals from the outputs of sensors 1, 2 and 3 are fed to the inputs of logic unit 4, in which the current values of the microclimate parameters are compared with their given values and the dictating microclimate parameter is selected (i.e., the parameter for removing excess which at the current moment in time requires the greatest exchange of all-air). From the outputs of logic unit 4, signals are proportional to the deviation of temperature or relative humidity of air from the specified values to the side, decreasing, respectively go to the control inputs of the heater 5 or humidifier 6, bringing the temperature or relative humidity of the air to the specified values, and the signal proportional to the selected dictated by the microclimate meter, enters, to the input of the capacity control unit 7, exhaust X electrofan 8, the rotation frequency of which varies in accordance with the output green control signal. The signals from the sensor outputs 9 and 10 are fed to the input of the comparator unit 11. From the output of the block 11, a signal proportional to the difference of the measured pressure values is fed to the input of the performance control unit 12 of the supply fan-type electric fans 13, whose performance varies in accordance with the control signal , the arch indicated pressure difference to zero. The signal from the output of logic unit 4 additionally goes through the differentiation unit 14 to the input of unit 12, this compensates for the inertia in the exhaust ventilation control channel and eliminates the formation of negative air overpressures during transients. The application of the proposed microclimate control method in poultry farms will improve the accuracy of microclimate control, save thermal and electrical energy needed to create an optimal microclimate and significantly reduce the risk of infection in the poultry houses. Claims The method of controlling the microclimate in a room by varying the capacities of supply and exhaust ventilation and temperature and humidity treatment of supply air, characterized in that, with whole improvements in control accuracy, the capacity of supply ventilation changes in proportion to the excess air pressure in the room and the rate of change exhaust ventilation performance. Sources of information taken into account in the examination: 1. USSR Author's Certificate No. 338439, cl. О 05 D 23/19, 1973. 2.а вка № 24О83О9 / 24, M. Кл7 q О5 D 27/00, 30.09.76, according to which a positive decision was taken.