RU2005269C1

RU2005269C1 - Air conditioning system with automatic control of temperature and moisture content in incoming air

Info

Publication number: RU2005269C1
Authority: RU
Inventors: Евгений Иванович Тарасов
Original assignee: Государственный проектный, конструкторский научно-исследовательский институт "СантехНИИпроект"
Priority date: 1991-03-28
Filing date: 1991-03-28
Publication date: 1993-12-30

Abstract

Сущность изобретени : терморегул тор на2 ружного воздуха снабжен первой и второй замыкающей и третьей размыкающей группами контактов . Трехходовой клапан теплоносителе последовательно включен через третью группу в цепь управлени между терморегул тором точки росы и регулирующим клапаном канапов наружного и рециркул ционного воздуха, последний дополнительно св зан через первую группу с терморегул тором наружного воздуха Трехходовой клапан камеры орошени соединен через вторую группу с терморегул тором точки росы. Теплообменник первого подогрева установлен в канапе рециркул ционного воздуха перед регулирующим воздушным клапаном по ходу воздуха 1 з ф-лы. 2 ил.SUMMARY OF THE INVENTION: The external air thermostat 2 is provided with first and second closing and third opening contact groups. The three-way valve of the coolant is sequentially connected through the third group to the control circuit between the dew point thermostat and the control valve of the external and recirculating air ducts, the latter is additionally connected through the first group to the outdoor air thermostat. The three-way valve of the irrigation chamber is connected through the second group to the point thermostat dew. The first preheater heat exchanger is installed in the recirculation air canap in front of the control air valve along the air flow 1 s of the unit. 2 ill.

Description

Изобретение относитс к области вентил ции и кондиционировани воздуха, в частности к регулированию тепловлагосо- Держзни приточного воздуха, и.можетбыть использовано в промышленных, общественных и жилых здани х.The invention relates to the field of ventilation and air conditioning, in particular to regulating the heat and moisture of the supply air, and can be used in industrial, public and residential buildings.

Известна система кондиционировани , включающа терморегул тор приточного воздуха, св занный по управлению с регулирующим клапаном обратного теплоносител теплообменника второго подогрева, терморегул тор точки росы, св занный последовательно по управлению с регулирующим клапаном каналов наружного и рециркул ционного воздуха и трехходовым клапаном насоса вод ного контура камеры орошени , трехходовой клапан теплоносител , соедин ющий вход теплообменника второго подогрева с пр мой линией теплосети и с выходом теплообменника первого подогрева и св занный по управлению с терморегул тором пр мого теплоносител теплообменника второго подогрева, пере- ключающие и обратный клапаны и водопо- догреаатель в узле теплообеспечени теплообменника первого подогрева.A known air conditioning system including a supply air temperature controller connected to control with a control valve of a return heat exchanger of a second heat exchanger, a dew point temperature controller connected in series to control a control valve of external and recirculation air channels and a three-way valve of the chamber water circuit pump irrigation, three-way valve of the coolant connecting the input of the second heat exchanger to the direct line of the heating network and to the outlet of the heat exchanger th heating and associated management temperature controller with direct heating of the heat medium of the second heat exchanger, and be switched return valves and vodopo- dogreaatel node Heating first heating heat exchanger.

К недостатку данной системы следует отнести наличие большого количества элементов , что снижает надежность системы, перерасход хлздоносител при превышении теплосодержанием наружного воздуха теплосодержани рециркул ционного и неполное использование теплоносител из-за сброса части его через дроссельную шайбу, что снижает экономичность системы.The disadvantage of this system is the presence of a large number of elements, which reduces the reliability of the system, the cost of chlorine carrier when the heat content of the outside air exceeds the heat content of recirculation and the incomplete use of the coolant due to the discharge of part of it through the throttle washer, which reduces the efficiency of the system.

Наиболее близкой к изобретению вл етс система кондиционировани , содержаща аналогичный упом нутой системе набор элементов и дополнительный водонагреватель с трехходовым клапаном, св занным по управлению с терморегул тором точки росы,Closest to the invention is an air conditioning system comprising a set of elements similar to the aforementioned system and an additional water heater with a three-way valve connected to control with a dew point thermostat;

Данной системе также присущи низкие надежность и экономичность.This system is also characterized by low reliability and efficiency.

Изобретение направлено на снижение количества элементов и повышение эффективности использовани тепло- и хлздоносител , что снижает капитальные и эксплуатационные затраты.The invention is directed to reducing the number of elements and increasing the efficiency of using heat and chlorine carrier, which reduces capital and operating costs.

Дл этого в систему кондиционировани , содержащую теплообменники первого и второго подогрева, камеру орошени с насосом вод ного контура, приточный вентил тор, терморегул тор приточного воздуха, св занный по управлению с регулирующим клапаном теплоносител , установленным на выходе из теплообменника второго подогрева в теплосеть, терморегул тор точки росы, соединенный по управлению с регулирующим клапаном каналовFor this purpose, an air conditioning system containing heat exchangers of the first and second heating, an irrigation chamber with a water circuit pump, a supply fan, a supply air temperature regulator connected to control a heat carrier control valve installed at the outlet of the second heating heat exchanger to the heating system, a temperature controller dew point torus connected by control to a channel control valve

наружного и рециркул ционного воздуха и трехходовым клапаном камеры орошени , трехходовой клапан теплоносител , размещенный на входе теплосети в теплообменник второго подогрева и на выходе теплоносител из теплообменника первого подогрева, последний из которых установлен перед камерой орошени , дополнительно введены терморегул тор наружногоexternal and recirculating air and a three-way valve of the irrigation chamber, a three-way valve of the heat carrier, located at the inlet of the heat supply network to the heat exchanger of the second heating and at the exit of the heat carrier from the heat exchanger of the first heating, the last of which is installed in front of the irrigation chamber, an external temperature regulator is additionally introduced

0 воздуха, снабженный первой и второй замыкающей и третьей размыкающей группами контактов, при этом трехходовой клапан теплоносител последовательно включен через третью группу размыкающих контак5 тов в цепь управлени между терморегул тором точки росы и регулирующим клапаном каналов наружного и рециркул ционного воздуха, причем последний дополнительно св зан через первую группу0 air, equipped with the first and second closing and third opening contact groups, while the three-way coolant valve is sequentially connected through the third group of opening contacts 5 to the control circuit between the dew point temperature regulator and the control valve of the external and recirculating air channels, the latter being additionally connected through the first group

0 замыкающих контактов с терморегул тором наружного воздуха, а трехходовой клапан камеры орошени соединен через вторую группу замыкающих контактов с терморегул тором точки росы.0 make contacts with the outside air thermostat, and a three-way valve of the irrigation chamber is connected through a second group of make contacts with the dew point thermostat.

5 Кроме того, теплообменник первого подогрева может быть установлен в канале рециркул ционного воздуха перед регулирующим воздушным клапаном по ходу воздуха , что снизит в переходный и теплый5 In addition, the first preheater heat exchanger can be installed in the recirculation air channel in front of the control air valve in the air flow, which will reduce the transition and warm

0 периоды года аэродинамическое сопротивление , а в холодный период года исключит возможность замерзани теплообменника. На фиг. 1 и 2 представлены функциональные схемы системы кондиционирова5 ни с установкой теплообменника первого подогрева перед камерой орошени и в канале рециркул ционного воздуха.0 periods of the year aerodynamic drag, and in the cold season exclude the possibility of freezing of the heat exchanger. In FIG. Figures 1 and 2 are functional diagrams of an air conditioning system5 with the first heat exchanger installed in front of the irrigation chamber and in the recirculation air channel.

Система кондиционировани включает в себ теплообменники 14.и 3 первого иThe air conditioning system includes heat exchangers 14.and 3 of the first and

0 второго подогрева, камеру 11 орошени с насосом 10 вод ного контура, приточный вентил тор 24, терморегул тор 1 приточного воздуха, св занный по управлению с регулирующим клапаном 2 теплоносител ,0 of the second heating, an irrigation chamber 11 with a water circuit pump 10, a supply fan 24, a supply air temperature regulator 1 connected in control with a control valve 2 of the coolant,

5 установленным на выходе из теплообменника 3 второго подогрева в теплосеть, терморегул тор 5 точки росы, соединенный по управлению с регулирующим клапаном 6 каналов 7 и 8 наружного и рециркул цион0 ного воздуха и трехходовым клапаном 9 камеры 11 орошени , трехходовой клапан 12 теплоносител , размещенный на входе теплосети в теплообменник 3 второго подогрева и на выходе теплоносител 5 installed at the outlet of the heat exchanger 3 of the second heating to the heating network, a thermostat 5 dew points, connected to control a control valve 6 of channels 7 and 8 of the external and recirculated air and a three-way valve 9 of the irrigation chamber 11, a three-way valve 12 of the heat carrier, located on the inlet of the heating system to the heat exchanger 3 of the second heating and at the outlet of the coolant

5 из теплообменника 14 первого подогрева, последний из которых может быть установлен либо перед камерой 11 орошени (фиг.1), либо в канале 8 рециркул ционного воздуха перед клапаном 6 по ходу воздуха (фиг.2), дополнительно введенные терморе (например, до-10°С) клапан 12 будет полностью закрыт в сторону прохода теплоносител через теплообменник 14, т.е. температура смеси наружного и-рециркул ционного аоздухэ будет такова (13°С), что первый подогрев уже не потребуетс .5 from the heat exchanger 14 of the first heating, the last of which can be installed either in front of the irrigation chamber 11 (Fig. 1), or in the recirculation air channel 8 in front of the valve 6 along the air flow (Fig. 2), additionally introduced by the thermostat (for example, to -10 ° C) valve 12 will be completely closed in the direction of passage of the coolant through the heat exchanger 14, i.e. the temperature of the mixture of external i-recirculation aosduhe will be such (13 ° C) that the first heating is no longer required.

При дальнейшем повышении температуры наружного воздуха после закрыти трехходового клапана 12 через его концевые выключатели (на чертежах не показаны) терморегул тор 5 точки росы начинает управл ть клапаном 6 каналов 7 и 8 наружного и рециркул ционного воздуха, т.е. постепенно увеличивать долю наружного и уменьшать долю рециркул ционного воздуха . With a further increase in the outdoor temperature after closing the three-way valve 12 through its limit switches (not shown in the drawings), the dew point thermostat 5 starts to control the valve 6 of the channels 7 and 8 of the external and recirculated air, i.e. gradually increase the proportion of outdoor air and decrease the proportion of recirculated air.

Температура приточного воздуха при этом поддерживаетс терморегул тором 1 посредством.изменени расхода теплоносител из пр мой линии 13 теплосети через трехходовой клапан 12, теплообменник 3 и клапан 2 в обратную линию 4 теплосети.In this case, the supply air temperature is maintained by the temperature controller 1 by changing the flow rate of the heat carrier from the direct heat supply line 13 through the three-way valve 12, heat exchanger 3 and valve 2 to the return heat supply line 4.

Режим охлаждени . При повышении температуры наружного воздуха, например, до 10°С, когда клапан 6 будет полностью открыт в сторону прохода наружного воздуха и закрыт в сторону прохода рециркул ционного воздуха, терморегул тор 5 точки росы через концевые выключатели клапана 6 (на чертежах не показаны) переводитс на управление трехходовым клапаном 9 насоса 10 вод ного контура камеры 11 орошени : с ростом температуры наружного воздуха клапан 9 все более открываетс в сторону забора холодной воды из трубопровода 22 холодоснабжени . Излишки воды в камере 11 орошени посредством перелива удал ютс по отвод щему трубопроводу 23.Cooling mode. When the outdoor temperature rises, for example, to 10 ° C, when valve 6 is fully open towards the outside air passage and closed toward the recirculation air passage, the dew point thermostat 5 through the limit switches of valve 6 (not shown in the drawings) to control the three-way valve 9 of the pump 10 of the water circuit of the irrigation chamber 11: as the outside temperature rises, the valve 9 more and more opens toward the intake of cold water from the cold supply pipe 22. Excess water in the irrigation chamber 11 is discharged by overflow through a discharge pipe 23.

При достижении температуры наружного воздуха пор дка 15-16°С теплосодержание (температура) наружного воздуха превышает теплосодержание (температуру) рециркул ционного воздуха, терморегул тор 15 наружного воздуха через первую группу замыкающих контактов 16 посредством клапана 6 прикрывает канал 7 наружного воздуха до возможного минимума (30%) и открывает канал 8 рециркул ции (на 70%), а через вторую группу замыкающих контактов 17 переводит терморегул тор 5 точки росы на непосредственное управление трехходовым клапаном 9.When the outdoor temperature reaches 15-16 ° C, the heat content (temperature) of the outdoor air exceeds the heat content (temperature) of the recirculated air, the thermostat 15 of the outdoor air through the first group of make contacts 16 through the valve 6 covers the channel 7 of the outdoor air to the minimum possible ( 30%) and opens the recirculation channel 8 (by 70%), and through the second group of make contacts 17 it transfers the dew point temperature regulator 5 to the direct control of the three-way valve 9.

Claims

The claims

; 1. AIR CONDITIONING SYSTEM

WITH AUTOMATIC CONTROL OF HEAT AND WATER SUPPLY OF SUPPLY AIR. containing

The supply air temperature in this mode continues to be maintained by the temperature controller 1 by changing the flow rate of the heat carrier through the second heat exchanger 3.

When the outside temperature drops, the control process is carried out in the reverse order: the three-way valve 9 is closed to the consumer side

cold water from the pipe 22 directly by controlling the thermostat 5 with a minimum of external air intake and a maximum of recirculation - valve 9 continues to close when switching

control of the temperature regulator 5 through valves 12 and b, the last of which is switched to the mode of full consumption of external air - the valve 6 is closed to the side of external air consumption

- the three-way valve 12 opens in the direction of increasing the passage of the coolant through the heat exchanger 14 of the first heating with a minimum of intake of external air. The air conditioning system shown in FIG. 2 operates similarly to the foregoing.

Since the heat exchanger 14 of the first heating is installed in the recirculation air channel 8, when controlled in the cooling mode and in the transition mode, the process of thermo-humid air treatment occurs at a significantly lower aerodynamic drag, i.e. during operation of the system in outdoor air, the resistance on the first heating is completely absent, and at the maximum intake of recirculated air it reaches 70% of the available in FIG. 1.

In addition, the heat exchanger 14 of the first

heating in this embodiment is in a homogeneous environment only at positive temperatures, which does not require careful displacement of the external and recirculating air to prevent freezing of the tubes

heat exchanger 14.

Thus, thanks to a new set of essential distinguishing features, the system provides thermal humidity treatment of the supply air with lower capital and operating costs with high reliability. (56) Copyright certificate of the USSR No. 1160191, cl. F 24 F 3/06, 1983.

55

heat exchangers of the first and second heating, an irrigation chamber with a water circuit pump, a supply fan, a supply air temperature regulator, associated with the control of the control

outdoor air cooler 15, equipped with first and second closing and third opening contact groups 16-18, while the three-way heat carrier valve 12 is sequentially connected through the third group of opening contacts 18 to the control circuit between the dew point temperature regulator 5 and the control valve 6 of channels 7 and 8 of external and recirculating air, the latter being additionally connected through a first group of make contacts 16 to an external air thermostat 15, and a three-way valve 9 of the irrigation chamber 11 is connected through a second The first group of the switching contacts 17 from the temperature controller 5 dew point.

Figures 1 and 2 also show the reverse and direct lines of the heating network 4 and 13, and the water circuit of the irrigation chamber 11 includes circuits 19, 20 and 21 of circulation, discharge and make-up, supply and discharge pipelines 22 and 23 cold supply - the wife.

The air conditioning system of FIG. 1 operates as follows.

Heating mode. When the air conditioner is turned on, the three-way valve 12 is fully opened towards the return of the heat transfer medium from the outlet of the heat exchanger 14 of the first heating through the heat exchanger 3 of the second heating, valve 2 and valve 6 of channels 7 and 8 are opened 30% towards the outside and 70% recirculating air passage, the three-way valve 9 is closed towards the intake of cold water from the supply pipe 22, the circulation pump 10 is turned on, ensuring the operation of the irrigation chamber 11 in adiabatic mode, in which the water from the chamber 11 is piped In addition to circulation 19 through a three-way valve 9, the pump 10 is repeatedly returned to the spray through the discharge pipe 20, and the compensation of the entrainment of water into the processed air is carried out via a make-up pipe 21, for example, from a water pipe, a supply fan 24 is turned on, which is a mixture of outdoor and recirculation constant air, heated on the heat exchanger 14 of the first heating, humidified in the chamber 11 of the irrigation and warmed on the heat exchanger 3 of the second heating, serves in the serviced room (not shown),

Supply air humidity is controlled by the dew point method by applying the thermostat 5 through the third opening group of contacts 18 of the outdoor air thermostat 15 to the three-way valve 12: when the dew point temperature rises

12 closes and reduces the amount of coolant passing through the heat exchanger 14 of the first heating, s opens when it decreases, increasing the flow rate 5 of the coolant,

Supply air temperature is controlled by temperature regulator 1 by acting on valve 2; when the temperature rises, valve 2 closes; 10; when it drops, it opens.

A change in heat removal on the first heat exchanger 14 from a change in the total flow rate of the coolant from the action of valve 2 is automatically neutralized 15 by changing the position of the three-way valve. Pan 12, i.e. when valve 2 is opened, valve 12 is closed by the command of the thermostat 5 of the dew point, restoring the required flow rate through 0 of the heat exchanger 14,

In turn, closing the valve 12 s to the side of the heat carrier passage through the first heat exchanger 14 leads to an increase in the temperature of the heat carrier 5 at the inlet of the second heating exchanger 3 by increasing the fraction of the direct heat carrier from the heat supply line 13, which leads to a quick stabilization of the supply air temperature and stabilization of the entire 0 system as a whole.

When closing valve 2, the process proceeds in the reverse order: the three-way valve 12 is opened in the direction of passage of the heat carrier through the heat exchanger 14 5 of the first heating, restoring the steady flow through it and decreasing the temperature of the heat carrier at the inlet of the heat exchanger 3 of the second heating.

Thus, the temperature of the supply point is maintained at the level set by the temperature regulator 5 by changing the amount of heat carrier through the first heat exchanger 14 by means of a three-way valve 12, and the supply air temperature 5 is maintained at the level set by the temperature regulator 1 by interconnecting the amount of ... the heat carrier through the heat exchanger 3

heating by valve 2 and 0 of the temperature of the coolant at the inlet of the heat exchanger 3 through valve 12.

With an increase in the outdoor temperature, the three-way valve 12 will proportionally reduce the flow of heat carrier 5 through the heat exchanger 14 of the first heating, and the valve 2 will maintain the necessary flow of heat through the heat exchanger 3 of the second heating.

Transient mode, With a slight increase in the outside temperature

a heat carrier valve installed at the outlet of the second preheater heat exchanger to the heating network, a dew point thermostat connected to control a control valve of the external and recirculating air channels and a three-way valve of the irrigation chamber, a three-way heat carrier valve located at the inlet of the heating system and a second heat exchanger and on the exit of the coolant from the heat exchanger of the first heating, the last of which is installed in front of the irrigation chamber, characterized in that the system further comprises ermoregul Torr outside air, provided with a first and a second closing of the opening and the third contact groups, the three-way valve

the coolant is sequentially connected through the third group of NC contacts to the control circuit between the dew point thermostat and the control valve of the channels of the external and recirculated air, the latter being additionally connected through the first group of NO contacts to the outdoor air thermostat, g three-way

the valve of the irrigation chamber is connected through a second group of make contacts to the dew point temperature controller.

2. The system according to claim 1, characterized in that the first preheater heat exchanger is installed in the recirculation air channel in front of the control air valve in the air direction.

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