KR101933986B1 - System for controlling dust of a closed factory for growing plants and control method of the same - Google Patents

Abstract

According to the present invention, a fan filter unit is operated according to a dust concentration of indoor air before an enthalpy control mode is checked, so as to preferentially purify the indoor air, thereby effectively removing indoor dust and maintaining an environment optimal for producing plants to produce medicine. In addition, when the dust concentration is re-detected and it is determined that dust is not sufficiently purified after the fan filter unit is operated for a predetermined time, external air is introduced for ventilation, and an inflow rate of the external air is controlled differently according to a difference between the temperature of the indoor air and the temperature of the external air, thereby controlling an indoor environment to be an optimal environment while purifying air. Also, since the introduction of external air is controlled by an enthalpy difference between indoor/external air after the indoor air is sufficiently purified through the fan filter unit, proper introduction of the external air is possible, and energy can be saved through the cooling using the external air.

Description

TECHNICAL FIELD The present invention relates to a dust control system for a closed plant plant and a method for controlling the same,

The present invention relates to a dust control system for a closed plant and a control method thereof. More particularly, the present invention relates to a dust control system and a control method thereof for rapidly and efficiently removing dust in a closed plant to provide an optimal indoor environment To a dust control system of a closed plant plant and a control method thereof.

In order to produce plants for the production of pharmaceuticals, the cultivation environment is artificially controlled, and a closed plant plant method is used to prevent external infections caused by bacteria, viruses, fungi, or the like, and is also referred to as a bio-clean room.

It is very important to maintain the indoor environment at preset conditions since the closed plant is mainly a factory for producing plants for producing pharmaceuticals.

However, the enclosed plant plant has a problem that the working environment of the operator is poor when the plant cultivation condition alone is taken into consideration, thereby lowering the working efficiency.

In addition, since the closed plant plant uses artificial light instead of solar light, the internal heat load due to the artificial light is very large, so that the cooling load is very large and energy consumption is very large.

In addition, the conventional environmental control of the closed plant plant mainly controls the temperature and the humidity, but the dust in the closed plant is a medium and a measure of pollution, so dust control is required.

Korean Patent Publication No. 10-2018-0089601

An object of the present invention is to provide a dust control system and a control method thereof in a closed plant that can quickly and efficiently remove dust in the outside air or dust generated in the interior of a closed plant plant.

The closed-type plant factory of the closed plant plant according to the present invention is characterized in that a closed plant plant having a plurality of tray members accommodating plants for producing pharmaceuticals and equipped with artificial light for providing light energy to the plants, An outside air damper installed in the air supply duct for supplying air to the inside of the room and controlling an inflow rate of the outside air flowing into the air supply duct; An exhaust damper installed in an exhaust duct for exhausting air from the room and controlling a flow rate of indoor air discharged from the room; A circulation air damper installed in a connecting duct connecting the air supply duct and the exhaust duct to regulate a flow rate of circulating air circulated to the room after being discharged from the room; A CO ₂ supply unit installed in the air supply duct for supplying CO ₂ to the air introduced into the room; A humidifying coil installed in the air supply duct to humidify the air flowing into the room; A cold / hot water coil installed in the air supply duct for heating or cooling the air flowing into the room; An outdoor air temperature sensor installed in the air supply duct for measuring a temperature of the outdoor air; an outdoor air humidity sensor for measuring a relative humidity of the outdoor air; and an outdoor air sensor including an indoor CO ₂ sensor for measuring a CO ₂ concentration of the outdoor air Wealth; An indoor temperature sensor installed in the exhaust duct for measuring a temperature of the indoor air, an indoor humidity sensor for measuring a relative humidity of the indoor air, and an indoor CO ₂ sensor for measuring a CO ₂ concentration of the indoor air An indoor sensor unit; A human body detecting sensor for detecting a human body in the room; A dust sensing sensor for sensing a dust concentration of the indoor air; A fan filter unit for sucking the room air, filtering the sucked air using a dust filter, and discharging the filtered air to the room; When the human body is sensed by the human body sensor and the CO ₂ concentration measured by the indoor CO ₂ sensor is equal to or higher than a preset upper limit value in the daytime mode in which the artificial light is illuminated and the plant performs the photosynthesis, Wherein the dust concentration sensor senses the dust concentration detected by the dust detection sensor when the artificial light is turned off and the plant breathes in the nighttime mode, And a controller for performing a dust filtering mode for operating the fan filter unit for a preset time if the dust setting value is equal to or greater than a predetermined dust setting value.

According to another aspect of the present invention, there is provided a closed-type plant factory having a plurality of tray members accommodated with plants for manufacturing pharmaceuticals and equipped with artificial light for providing light energy to the plants, A thermo-hygrostat provided in a room of a plant factory for supplying air to a room at a preset temperature and a preset humidity; A CO ₂ supply device for supplying CO ₂ to the room; An outside air damper for adjusting a flow rate of outside air flowing into the room; An exhaust damper for adjusting a flow rate of indoor air discharged from the room; An air supply fan for blowing outside air introduced into the outside air damper; An exhaust fan for blowing indoor air discharged through the exhaust damper; An induction fan provided on a ceiling of the room for circulating the air so that the air flow in the room is uniform; An outside air temperature sensor for measuring a temperature of the outside air, an outside air humidity sensor for measuring a relative humidity of the outside air, and an indoor CO ₂ sensor for measuring a CO ₂ concentration of the outside air; An indoor sensor unit including an indoor temperature sensor for measuring a temperature of the room air, an indoor humidity sensor for measuring a relative humidity of the indoor air, and an indoor CO ₂ sensor for measuring a CO ₂ concentration of the indoor air; A human body detecting sensor for detecting a human body in the room; A dust sensing sensor for sensing a dust concentration of the indoor air; A fan filter unit for sucking the room air, filtering the sucked air using a dust filter, and discharging the filtered air to the room; When the human body is sensed by the human body sensor and the CO ₂ concentration measured by the indoor CO ₂ sensor is equal to or higher than a preset upper limit value in the daytime mode in which the artificial light is illuminated and the plant performs the photosynthesis, Wherein the dust concentration sensor senses the dust concentration detected by the dust detection sensor when the artificial light is turned off and the plant breathes in the nighttime mode, And a controller for performing a dust filtering mode for operating the fan filter unit for a preset time if the dust setting value is equal to or greater than a predetermined dust setting value.

According to another aspect of the present invention, there is provided a method for controlling dust in a closed plant plant, comprising: measuring the temperature and relative humidity of indoor air at a predetermined time interval in a sensor unit in a closed plant plant for growing a plant for producing pharmaceuticals; A temperature / humidity measuring step of measuring temperature and relative humidity at regular time intervals; A day and night setting step of setting any one of a daytime mode in which the artificial light provided in the closed plant plant is lighted by the control unit to perform the photosynthesis of the plant and a nighttime mode in which the artificial light is turned off and the plant is only respiratory; ; A human body sensing step of determining whether the human body detection sensor detects a human body in the room if the daytime mode is set in the day and night setting step; When the human body is detected on the human body detection step, CO ₂ sensor is CO ₂ concentration measurement step of measuring a predetermined time interval the CO ₂ concentration of the interior and; If the CO ₂ concentration of the CO ₂ concentration in the room measured at the measuring step the preset upper limit value or more, the outdoor air introduced to the control ventilated to different settings for the outside air introduction rate according to the difference in temperature and the temperature of the ambient air of the room air Performing a control mode; If the CO of less than the above upper limit CO ₂ concentration in the room measured at a _second concentration measuring step and a predetermined lower limit value or more, the dust concentration is determined comparing with the dust set value previously set the dust concentration of the room air detected by the dust detecting sensor Wow; Performing a dust filtering mode for filtering indoor air by operating the fan filter unit for a set time if the dust concentration is equal to or higher than the dust setting value in the dust concentration determination step; A dust concentration re-judgment step of comparing the dust concentration of the room air detected by the dust detection sensor with the dust set value again when the set time has elapsed; An enthalpy control mode for comparing the enthalpy of the room air with the enthalpy of the outside air to introduce outside air if the dust concentration is less than the dust set value in the dust concentration re-judgment step, An enthalpy control mode confirmation step of confirming which one of the indoor circulation modes is set; And calculating enthalpy of the indoor air and enthalpy of the outdoor air based on enthalpy of the indoor air, enthalpy of the outdoor air, temperature of the outdoor air, temperature of the outdoor air, And determining whether the outside air introduction control mode is performed according to the relative humidity.

In the present invention, by operating the fan filter unit according to the dust concentration of the room air before confirming the enthalpy control mode, the room air is preferentially cleaned, thereby effectively removing the dust in the room, thereby making it an optimal environment for the production of pharmaceutical production plants There is an advantage that can be maintained.

In addition, when the fan filter unit is operated for the set time and the dust concentration is detected again and it is judged that the air is not sufficiently purified, the outdoor air is introduced and ventilated, and the outdoor air introduction rate is controlled differently according to the difference between the indoor air temperature and the outdoor air temperature Therefore, the indoor environment can be controlled to the optimum environment while air purification is performed.

Further, since the outdoor air introduction is controlled by the enthalpy difference of the outdoor air after sufficiently cleansing the indoor air through the fan filter unit, it is possible to introduce an appropriate outdoor air and to save energy through cooling using the outdoor air.

In addition, outdoor air introduction can be performed more efficiently by controlling the outdoor air introduction control differently in the daytime mode in which the plant performs the photosynthesis action and in the nighttime mode in which the plant only performs the breathing action.

Further, in the daytime mode, the indoor environment can be controlled to the optimum environment by considering the operator with the plant.

1 is a view showing a dust control system of a closed plant-type air conditioner system according to a first embodiment of the present invention.
2 is a block diagram showing the structure of a dust control system of the closed-type plant of the air conditioner type shown in FIG.
3 is a view showing a dust control system of a closed type plant-type thermostatic / hygroscopic closed plant according to a second embodiment of the present invention.
FIG. 4 is a block diagram showing the structure of a dust control system of the closed-type thermo-hygrostat method closed plant plant shown in FIG.
5A to 5D are flowcharts illustrating a dust control method of a closed plant plant according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

The closed plant plant according to the embodiment of the present invention is a plant for growing a plant for producing pharmaceuticals (hereinafter referred to as "plant"). The closed plant plant is controlled to an optimal environment for cultivating the plant and is sealed to prevent infestation by external infections or insects. Since the closed plant plant controls the environment for the plants, the temperature is controlled at about 25 DEG C, the humidity is controlled at 40 to 80%, the CO ₂ concentration is controlled at 800 to 1500 ppm, Environmental control is also different.

The indoor R of the closed plant plant is provided with artificial light (not shown) for providing light energy to the plant to allow the plant to perform photosynthesis. The artificial light (not shown) must provide a very high illumination density since it must provide the photosynthetic energy necessary for the growth of the plant. The artificial light may have an illumination density of about 200 W / m < ² >. Therefore, it is necessary to control the indoor temperature and humidity by using the air conditioner system or the packaged type constant temperature and humidity system, because the internal plant heating load is large due to the artificial lighting and the cooling load due to the internal heating load is also very large. Do.

A plurality of tray members, in which the plants P are accommodated, are stacked on the indoor R of the closed plant.

The plant includes plants for hydroponics such as bentamiana. The plant is used to infiltrate plant tissue with Agrobacterium transformed with a gene encoding a protein to induce transient expression of the exogenous protein in the plant. The closed plant plant may also be provided with a device for injecting infiltration solution into the tissue of the plant.

1 is a view showing a dust control system of a closed plant-type air conditioner system according to a first embodiment of the present invention. 2 is a block diagram showing the structure of a dust control system of the closed-type plant of the air conditioner type shown in FIG.

1 and 2, the dust control system of the closed plant plant is an air conditioner system.

The air conditioner system is a system in which outside air is introduced and the outside air is cooled, heated, humidified or dehumidified, and then supplied to the room.

The dust control system of the closed-type plant of the air conditioner system includes an air supply duct 10, an outside air damper 11, an air supply fan 12, an exhaust duct 20, an exhaust damper 21, an exhaust fan 22, The circulation air damper 31, the CO ₂ supply unit 40, the humidifying coil 42, the cold / hot water coil 44, the reheat coil 46, the outside air filter 48, the outside air sensor unit 50, A dust sensor 90, a dust filter differential pressure sensor 91, an outside air filter differential pressure sensor 92, a fan filter unit 95 and a control unit 80. The indoor sensor unit 60, the human body sensor 70, the dust sensor 90, do.

The air supply duct (10) is a flow path for supplying mixed air in which ambient air or outdoor air and circulating air are mixed to the room (R).

The outside air damper 11 is installed at one side of the air supply duct 10 and controls a flow rate of the outside air flowing into the air supply duct 10.

The air supply fan 12 is provided inside the air supply duct 10 and blows air supplied to the indoor R.

The exhaust duct 20 is a flow path for discharging air from the room R.

The exhaust damper 21 is installed at one side of the exhaust duct 20 and adjusts the flow rate of the indoor air discharged from the exhaust duct 20.

The exhaust fan 22 is provided inside the exhaust duct 20 and blows air discharged from the indoor R.

The connecting duct 30 connects the air supply duct 10 and the air exhaust duct 20 to circulate a part of room air discharged through the air exhaust duct 20 to the air supply duct 10, to be.

The circulating air damper 31 is provided inside the connecting duct 30 and controls the flow rate of the circulating air circulated to the room after being discharged from the room R.

The CO ₂ supply device 40 is installed inside the air supply duct 10 and supplies CO ₂ to the air introduced into the room. Since the plant requires CO ₂ when it performs photosynthesis, CO ₂ can be supplied as needed.

The humidifying coil 42 is installed in the air supply duct 10 to humidify the air flowing into the room. The humidifying coil 42 is provided between the cold / hot water coil 44 and the CO ₂ supply device 40.

The cold / hot water coil 44 is installed inside the air supply duct 10 to heat or cool the air flowing into the room.

The reheat coil 46 is installed on the flow path connecting the air supply duct 10 and the room R and reheats the air that is subcooled in the air supply duct 10 during the cooling and dehumidifying process.

The outside air filter 48 is installed on a flow path connecting the air supply duct 10 and the room R to filter the air supplied to the room R. [

The outside air sensor unit 50 includes an outside air temperature sensor 51 installed in the air supply duct 10 to measure a temperature of the outside air, an outside air humidity sensor 52 for measuring a relative humidity of the outside air, And an indoor CO ₂ sensor 53 for measuring the CO ₂ concentration of the outside air.

The indoor sensor unit 60 includes an indoor temperature sensor 61 installed in the exhaust duct 20 and measuring the temperature of the indoor air discharged from the indoor R, And an indoor CO ₂ sensor 63 for measuring the CO ₂ concentration of the indoor air.

The human body detection sensor 70 is installed in the room R and detects a human body existing in the room R. [ In general, the environment of the room R is controlled by taking into consideration only the plant, and the environment for the human body at the time of entering and exiting the person such as the worker must be considered. The environment of the room R may change due to the human body The human body detection sensor 70 for detecting the human body should be provided.

A mixed air temperature sensor 72 for measuring the temperature of the mixed air in which the room air and the outside air are mixed is installed at a position where the indoor air and the outside air are mixed through the connecting duct 30 in the air supply duct 10, Can be installed.

The dust detection sensor 90 is a sensor for detecting the dust concentration of the indoor air. The dust sensing sensor 90 may be installed on the ceiling or the wall of the room.

The fan filter unit 95 is an air purification unit that sucks the room air, filters the sucked air by using a dust filter 96, and discharges the filtered air into the room. The dust filter 96 may be a HEPA filter or the like. The fan filter unit 95 is installed on the ceiling of the room, for example.

The dust filter differential pressure sensor 91 is provided in the fan filter unit 95 and measures the difference between the suction side pressure and the discharge side pressure of the dust filter 96.

The outside air filter differential pressure sensor 92 is a pressure sensor for measuring the difference between the suction pressure and the discharge pressure of the outside air filter 48.

The control unit 80 determines whether or not the artificial illumination (not shown) is turned on, the human body sensor 70, the indoor CO ₂ sensor 63, the indoor temperature sensor 61, the indoor humidity sensor 62, The outside air temperature sensor 51, the outside air humidity sensor 52, the outside air CO ₂ sensor 53, the mixed air temperature sensor 72 and the dust sensing sensor 90, At least one of the outside air introduction control mode, the enthalpy control mode, the indoor circulation mode, and the dust filtering mode is controlled by controlling the operation of the exhaust damper 11, the exhaust damper 21, the circulating air damper 31 and the fan filter unit 95, Perform one.

3 is a view showing a dust control system of a closed type plant-type thermostatic / hygroscopic closed plant according to a second embodiment of the present invention. FIG. 4 is a block diagram showing the structure of a dust control system of the closed-type thermo-hygrostat method closed plant plant shown in FIG.

Referring to FIGS. 3 and 4, the dust control system of the closed plant plant according to the second embodiment of the present invention differs from the first embodiment in that it is a package type constant temperature / humidity system.

The package type constant temperature and humidity system is a system in which a thermo-hygrostat 100 is installed in an indoor room R of the closed plant plant, and the thermo-hygrostat 100 supplies air having a preset humidity and a preset humidity . Therefore, in the thermo-hygrostat method, the humidifying coil or the reheat coil necessary for the air conditioner system is not separately provided on the outside air introduction flow path.

Dust control system of the closed type plant factory, the constant temperature humidity chamber 100, the outside-air damper 110, the air supply fan 112 and exhaust damper 120 and exhaust fan 122, the attraction fan (200), CO ₂ supply The apparatus 140 includes the outside air filter 148, the outside air sensor unit 150, the indoor sensor unit 160, the human body sensor 170, the dust sensor 190, the dust filter differential pressure sensor 191, A sensor 192, a fan filter unit 195, and a control unit 180.

The outside-air damper 110 is installed on a flow path for supplying outside air to the room R to regulate inflow flow rate of the outside air.

The air supply fan 112 is a fan for blowing air supplied to the indoor R.

The exhaust damper 120 is installed on a flow path for discharging indoor air from the room R, and controls the flow rate of indoor air to be discharged.

The exhaust fan 122 is a fan for blowing air discharged from the room R.

The induction fan 200 is a fan that circulates indoor air so that the airflow of the indoor R is uniform.

The CO ₂ supplying device 140 is a device for directly supplying CO ₂ to the room. Since the plant requires CO ₂ when it performs photosynthesis, CO ₂ can be supplied as needed.

The outside air filter 148 is installed on a flow path for supplying outside air to the room R and filters the air supplied to the room R. [ Therefore, it is possible to prevent an external infection or an infestation of a pest.

The outside air sensor unit 150 is installed on a flow path for supplying outside or outside air of the closed plant to the room R. [ And the outside-air sensor 150, and the outdoor air temperature sensor 151 for measuring the temperature of the outside air, the outside air humidity sensor 152 for measuring the relative humidity of the outdoor air, indoor measuring the CO ₂ concentration in the atmosphere And a CO ₂ sensor 153.

The indoor sensor unit 160 is installed on a flow path for discharging indoor air from the indoor R or the indoor R. [ The indoor sensor unit 160 includes an indoor temperature sensor 161 for measuring the temperature of indoor air discharged from the indoor R, an indoor humidity sensor 162 for measuring the relative humidity of the indoor air, And an indoor CO ₂ sensor 163 for measuring the CO ₂ concentration of the indoor air.

The human body detection sensor 170 is installed in the room R and detects a human body existing in the room R. [ In general, the environment of the room R is controlled by taking into consideration only the plant, and the environment for the human body at the time of entering and exiting the person such as the worker must be considered. The environment of the room R may change due to the human body The human body detecting sensor 170 for detecting the human body should be provided.

The dust sensing sensor 190 is a sensor for sensing the dust concentration of the indoor air. The dust detection sensor 190 is installed on the inlet side of the thermo-hygrostat 100, for example. However, the present invention is not limited to this, and the dust sensing sensor 190 may be installed on the ceiling or the wall of the room.

The fan filter unit 195 is an air purification unit that sucks the room air, filters the sucked air using a dust filter 196, and discharges the filtered air into the room. The dust filter 96 may be a HEPA filter or the like. The fan filter unit 195 is installed on the ceiling of the room.

The dust filter differential pressure sensor 191 is provided in the fan filter unit 195 and measures the difference between the suction side pressure and the discharge side pressure of the dust filter 196.

The outside air filter differential pressure sensor 192 is a pressure sensor for measuring the difference between the suction pressure and the discharge pressure of the outside air filter 148.

The control unit 180 determines whether or not the artificial lighting (not shown) is turned on, the human body sensor 170, the indoor CO ₂ sensor 163, the indoor temperature sensor 161, the indoor humidity sensor 162, The outdoor air temperature sensor 151, the outdoor air humidity sensor 152, the outdoor air CO ₂ sensor 153, the mixed air temperature sensor 172 and the particulate matter detection sensor 190, Mode, an enthalpy control mode, an indoor circulation mode, and a dust filtering mode.

5A to 5D are flowcharts illustrating a dust control method of a closed plant plant according to an embodiment of the present invention.

5A to 5D, a dust control method of a closed plant plant according to an embodiment of the present invention will be described.

The dust control system of the closed plant factory has been described by dividing it into the air conditioner system and the package type constant temperature and humidity system, but the control method will be described collectively.

When the closed plant plant is operated, the room R is maintained at a predetermined temperature and a preset humidity.

5A, when the operation and environment control of the closed plant are started, the temperature of the room air, the relative humidity of the room air, the temperature of the outdoor air and the relative humidity of the outdoor air are measured at regular intervals (S1)

Also, the control unit performs the day / night setting step of setting the main / night mode. (S2)

In the daytime mode, the artificial light is turned on to perform photosynthesis of the plant. In the night mode, the artificial light is turned off, and only the breathing action of the plant is performed. Since the closed plant plant is a place where environmental control is performed in consideration of plants, the activity of the plant is changed depending on whether the plant is in the daytime mode or the nighttime mode. In addition, since the photosynthesis must be performed in the daytime mode, the CO ₂ concentration is more important than in the nighttime mode. In addition, since the plant breathing is performed in the night mode, even if the outdoor air is supplied immediately, the CO ₂ concentration required for plant growth is not affected, so that the energy can be saved by cooling by using the outside air. Therefore, environmental control changes depending on the daytime mode and the nighttime mode.

In the day and night setting step S2, the case of setting to the night mode will be described in detail later.

When the day mode is set in the day and night setting step S2, the controller performs a human body detection step of determining whether a human body is sensed in the room (S3)

In the daytime mode, a worker can work in and out of the room R, so that when the concentration of CO _{2 in} the room R is too high, there may be a problem in respiration of the worker, It may affect the CO ₂ concentration of the (R). That is, the CO ₂ concentration in the room R should be controlled not to exceed 1000 ppm during the daytime mode. Therefore, in the daytime mode, a human body detection step is performed to detect the presence or absence of an operator.

When the human body is detected on the human body detection step (S3), and performs a _two-stage CO concentration measurement for measuring the CO ₂ concentration of the interior at a predetermined time interval. (S4)

And comparing the CO ₂ concentration in the room measured by the CO ₂ concentration measurement step (S4) with a preset upper limit value. (S5)

If the CO ₂ concentration in the room is equal to or greater than a preset upper limit value, the controller performs an outside air introduction control mode (S100) in which the outdoor air introduction rate is set differently according to the difference between the indoor air temperature and the outdoor air temperature. The outside air introduction control mode (S100) will be described later in detail.

If the CO ₂ concentration in the room measured by the CO ₂ concentration measurement step (S4) is lower than the above upper limit value, comparing the CO ₂ concentration of the room and the preset lower limit value. (S6)

If the CO ₂ concentration in the room is less than the lower limit value, it is determined that the CO ₂ concentration in the room is not high and it can be judged that the work environment of the worker is not affected. Therefore, if the CO ₂ concentration in the room is less than the lower limit value, the CO ₂ concentration is continuously measured and the condition is confirmed.

On the other hand, when the CO ₂ concentration in the room is equal to or more than the lower limit value, the operation of the fan filter unit is controlled by detecting the dust concentration.

That is, if the CO ₂ concentration in the room is equal to or greater than the lower limit value, the dust sensing sensor 91 or 191 performs a dust concentration sensing step of sensing the dust concentration of the room air.

However, the present invention is not limited to this, and the dust concentration detection may be performed together with the temperature of the room air, the humidity, the temperature of the outside air, and the relative humidity, or may be performed in real time.

The dust concentration determination step for comparing the detected dust concentration with the preset dust setting value is performed (S8)

The dust setting value is preset to a dust concentration capable of affecting plant growth in the closed plant plant.

If the dust concentration is equal to or greater than the dust set value, the control unit operates the fan filter units 95 and 195. (S9)

The fan filter units (95) and (195) operate for a predetermined set time. When the fan filter units 95 and 195 are operated, indoor air is sucked into the fan filter units 95 and 195, and dust is filtered by the dust filters 96 and 196. The clean air filtered by the dust filters (96) and (196) is again discharged into the room.

It is determined whether or not the set time has elapsed while the fan filter units 95 and 195 are operating.

When the preset time has elapsed, the dust concentration sensor re-sensing step of re-sensing the dust concentration of the room air by the dust sensing sensors 91 and 191 is performed (S11)

Herein, the dust sensing sensors 91 and 191 have been described as sensing the dust concentration of the room air. However, the present invention is not limited to this, and the dust sensing sensors 91 and 191 may detect the dust concentration in real time It may be.

The dust concentration re-determination step of comparing the re-sensed dust concentration again with the dust set value in the dust concentration re-sensing step is performed (S12)

If it is determined in step S12 that the dust density is less than the dust set value, it is determined that the indoor air is sufficiently cleaned while the fan filter unit (95) 195 is operating.

Therefore, the operation of the fan filter units 95 and 195 is stopped (S13)

After the operation of the fan filter units (95) and (195) is stopped, the controller compares the enthalpy of the room air with the enthalpy of the outside air to introduce outside air. And an indoor circulation mode (S200) for circulating the enthalpy control mode is performed (S14).

5B, when it is determined that the enthalpy control mode is set in the enthalpy control mode checking step S14, the enthalpy of the room air and the enthalpy of the outside air are calculated (S15).

The method of calculating the enthalpy is expressed by Equation (1).

In Equation 1, T = temperature, c is _a specific heat (1,005J / kg · K, 0.240kcal / kg · ℃) of air, _v c is a specific heat of steam (1,846J / kg · K, 0.441kcal / kg · ° C), r ₀ represents the latent heat of evaporation at 0 ° C (2,501 ㅧ 103J / kg, 597.5kcal / kg).

The method of calculating the absolute humidity (x) is shown in Equation (2).

Where P is atmospheric pressure and Pw is water vapor partial pressure.

The atmospheric pressure P is calculated by Equation (3), and the steam partial pressure Pw is calculated by Equation (4).

Where P ₀ is the atmospheric pressure (= 101.325 kPa (760 mmHg)), Z is the sea level (m) and T _0ab is 288.15 K (= 15 + 273.15)

Where T _0ab is the atmospheric pressure at sea level in the standard atmosphere.

Here, RH is the relative humidity (%), P _ws is the saturated water vapor pressure (kPa), and is calculated by Equation (5).

Where T _ab [k] = T + 273.15.

If the enthalpy of the indoor air and the enthalpy of the outdoor air are respectively obtained by the above Equation 1, the difference between the enthalpy of the indoor air and the enthalpy of the outdoor air is calculated. The difference between the enthalpy of the room air and the enthalpy of the outside air can be called an enthalpy energy.

And compares the enthalpy of the room air with the enthalpy of the outside air. (S16)

If the enthalpy of the outside air exceeds the enthalpy of the room air, the process returns to step (S1) of measuring the temperature and humidity so as not to introduce outside air.

If the enthalpy of the outside air is equal to or lower than the enthalpy of the room air, the temperature of the outside air is compared with a preset room temperature (S17)

 If the temperature of the outside air exceeds the indoor set temperature, the process returns to step S1 in which the temperature and humidity are measured so as not to introduce outside air.

 If the temperature of the outside air is below the room set temperature, it is determined whether the relative humidity of the outside air is within a predetermined set humidity range (S 18)

If the relative humidity of the outside air is out of the set humidity range, the process returns to step S1 in which the temperature and humidity are measured so as not to introduce outside air.

And performs the outside air introduction control mode (S100) when the relative humidity of the outside air is within the set humidity range.

When the room temperature of the closed plant plant is maintained at a constant temperature and humidity condition, the latent heat load for humidifying or dehumidifying at the time of introducing the outside air may become large and the economical efficiency may deteriorate. Therefore, when the relative humidity of the outside air is within the set humidity range, do.

Referring to FIG. 5C, the outside air introduction control mode (S100) will be described.

In the outside air introduction control mode (S100), the difference between the temperature of the room air and the temperature of the outside air is calculated (S101)

In order to prevent the plants from being stressed by the temperature change due to the introduction of the outside air during the introduction of the outside air, the supply amount of the outside air is controlled differently according to the difference between the temperature of the room air and the temperature of the outside air.

Wherein the supply amount of the outside air is controlled by adjusting the opening degree of the outside air damper and the exhaust damper when the system is the air conditioner system, Or by pole change.

Therefore, it is determined whether the system is the air conditioner system or the packaged type constant temperature / humidity unit (S 102)

In the case of the outdoor air introduction control mode and the air conditioner system, the control method is as follows.

If the difference between the temperature of the room air and the temperature of the outside air is less than a preset minimum value, the exhaust damper, the outside air damper, and the circulating air damper are opened at a predetermined maximum opening degree.

Here, the minimum value is 5 ° C and the maximum opening degree is 100%, for example.

When the difference between the temperature of the room air and the temperature of the outside air exceeds the minimum value and is equal to or less than a preset maximum value, the temperature of the room air and the temperature of the outside air are controlled by the exhaust damper, (S105) (S106). [0050]

Here, the maximum value is 10 [deg.] C, for example.

When the difference between the temperature of the room air and the temperature of the outside air exceeds the maximum value, the exhaust damper, the outside air damper, and the circulating air damper are opened at a predetermined minimum opening degree (S107) (S108)

Here, the minimum opening degree is set in advance.

On the other hand, in the case of the package type constant temperature / humidity control system, the control method is as follows.

The exhaust damper and the outside-air damper are opened at a predetermined maximum opening degree. (S111)

Here, the maximum opening degree is 100% opening degree, for example.

If the difference between the temperature of the indoor air and the temperature of the outside air is less than a predetermined minimum value, the operation of the air supply fan and the exhaust fan is controlled at a preset maximum operation rate (S112) (S113)

Here, the minimum value is 5 DEG C and the maximum operation rate is 100%, for example.

When the difference between the temperature of the room air and the temperature of the outside air exceeds the minimum value and is equal to or less than a preset maximum value, the operation of the air supply fan and the exhaust fan is controlled with the operating ratio set to be proportional to the temperature difference (S114) (S115)

Here, the maximum value is 10 [deg.] C, for example.

When the difference between the temperature of the indoor air and the temperature of the outside air exceeds the maximum value, the operation of the air supply fan and the exhaust fan is controlled at a predetermined minimum operation rate (S116) (S117)

Here, the minimum drive ratio is set in advance.

On the other hand, in the day or night setting step (S2) of Figure 5a, when it is set to the night mode, the night operation is not important that the CO ₂ concentration is not measured CO ₂ concentration.

When the night mode is set, the dust concentration sensing step S7 is preferentially performed before confirming that the enthalpy control mode is set.

If it is determined that the enthalpy control mode is not set and the indoor circulation mode S200 is set in the enthalpy control mode checking step S14 of FIG. 5A, the indoor circulation mode S200 in which no outside air is introduced .

Referring to FIG. 5D, the indoor circulation mode S200 will be described.

In the air conditioner system, the exhaust damper, the outside air damper, and the circulating air damper are all closed (S202)

In the case of the thermo-hygrostat system, both the exhaust damper and the outside air damper are closed, and both the air supply fan and the exhaust fan are stopped (S203) (S204)

If it is determined in step S12 of FIG. 5A that the re-sensed dust concentration is equal to or greater than the dust set value, the indoor air is sufficiently purified during operation of the fan filter unit 95 .

Therefore, the control unit performs the outside air introduction control mode (S100) in order to introduce and ventilate the outside air while maintaining the operation of the fan filter units (95) and (195).

When the outside air is introduced, the outside air filters (48) and (148) can filter out dust in the outside air.

Meanwhile, if the human body is not sensed in the human body sensing step S3 of FIG. 5A, the controller compares the CO ₂ concentration of the room with a predetermined lower limit value (S6)

If the CO ₂ concentration in the room is equal to or greater than the lower limit value, the dust sensing sensor 91 or 191 performs the dust concentration sensing step of sensing the dust concentration of the room air.

On the other hand, if the difference between the suction pressure and the discharge pressure of the dust filter sensed by the dust filter differential pressure sensors 91 and 191 is equal to or greater than a predetermined difference, it is determined that the dust filter 96 (196) So that an alarm indicating the replacement can be displayed.

If the difference between the suction pressure and the discharge pressure of the outside air filter sensed by the outside air filter differential pressure sensors 92 and 192 is equal to or greater than a predetermined difference value, it is determined that the replacement of the outside air filter 92 (192) So that an alarm indicating the replacement can be displayed.

As described above, in the present invention, the dust concentration of the room air can be measured before the step S7 of confirming the enthalpy control mode, and the room air can be preferentially purified by operating the fan filter unit according to the dust concentration.

In addition, when the fan filter unit is operated for the preset time and the dust concentration is re-sensed and it is judged that the air is not sufficiently purified, the outdoor air is introduced and ventilated, and the outdoor air introduction rate is changed according to the difference between the indoor air temperature and the outdoor air temperature It is possible to control the indoor environment to the optimum environment while purifying the air.

Further, when the CO ₂ concentration in the room falls within the range between the upper limit value and the lower limit value, introduction of the outside air is controlled by the enthalpy difference of the outside air, so that it is possible to introduce appropriate outside air, Can be saved.

In addition, outdoor air introduction can be performed more efficiently by controlling the outdoor air introduction control differently in the daytime mode in which the plant performs the photosynthesis action and in the nighttime mode in which the plant only performs the breathing action.

Further, in the daytime mode, the indoor environment can be controlled to the optimum environment by considering the operator with the plant.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Supply duct 11: Ambient air damper
20: exhaust duct 21: exhaust damper
30: connecting duct 31: circulating air damper
40: CO ₂ supply device 42: humidifying coil
44: cold / hot water coil 46: reheat coil
48: outdoor filter 50: outdoor sensor part
60: Indoor sensor part 70: Human body sensor
80: Control section 90: Dust detection sensor
91: Dust filter differential pressure sensor 92: Outdoor filter differential pressure sensor
95: Fan filter unit 96: Dust filter
100: thermo-hygrostat 110: external air damper
112: air supply fan 120: exhaust damper
122: exhaust fan 140: CO ₂ supply device
148: HEPA filter 150: Outdoor sensor part
160: indoor sensor unit 170: human body sensor
180: Control unit 190: Dust detection sensor
191: Dust filter differential pressure sensor 195: Fan filter unit
200: Fun Fan

Claims (18)

A closed plant plant having a plurality of tray members accommodating a plant for manufacturing a medicament and equipped with artificial light for providing light energy to the plant,
An outside air damper installed in an air supply duct for supplying air to the inside of the closed plant plant and controlling an inflow flow rate of the outside air flowing into the air supply duct;
An exhaust damper installed in an exhaust duct for exhausting air from the room and controlling a flow rate of indoor air discharged from the room;
A circulation air damper installed in a connecting duct connecting the air supply duct and the exhaust duct to regulate a flow rate of circulating air circulated to the room after being discharged from the room;
A CO ₂ supply unit installed in the air supply duct for supplying CO ₂ to the air introduced into the room;
A humidifying coil installed in the air supply duct to humidify the air flowing into the room;
A cold / hot water coil installed in the air supply duct for heating or cooling the air flowing into the room;
An outdoor air temperature sensor installed in the air supply duct for measuring a temperature of the outdoor air; an outdoor air humidity sensor for measuring a relative humidity of the outdoor air; and an outdoor air sensor including an indoor CO ₂ sensor for measuring a CO ₂ concentration of the outdoor air Wealth;
An indoor temperature sensor installed in the exhaust duct for measuring a temperature of the indoor air, an indoor humidity sensor for measuring a relative humidity of the indoor air, and an indoor CO ₂ sensor for measuring a CO ₂ concentration of the indoor air An indoor sensor unit;
A human body detecting sensor for detecting a human body in the room;
A dust sensing sensor for sensing a dust concentration of the indoor air;
A fan filter unit for sucking the room air, filtering the sucked air using a dust filter, and discharging the filtered air to the room;
When the human body is sensed by the human body sensor and the CO ₂ concentration measured by the indoor CO ₂ sensor is equal to or higher than a preset upper limit value in the daytime mode in which the artificial light is illuminated and the plant performs the photosynthesis, An outside air introduction control mode is performed in which the outside air introduction rate is set differently according to a difference in temperature of the outside air,
A controller for performing a dust filtering mode in which the fan filter unit is operated for a set time when the dust concentration detected by the dust detection sensor is equal to or greater than a predetermined dust setting value in a night mode in which the artificial light is turned off and the plant breathed Dust control system of enclosed plant factories. A closed plant plant having a plurality of tray members accommodating a plant for manufacturing a medicament and equipped with artificial light for providing light energy to the plant,
A thermostatic hygrostat provided in a room of the closed plant plant for supplying air to a room at a preset temperature and a preset humidity;
A CO ₂ supply device for supplying CO ₂ to the room;
An outside air damper for adjusting a flow rate of outside air flowing into the room;
An exhaust damper for adjusting a flow rate of indoor air discharged from the room;
An air supply fan for blowing outside air introduced into the outside air damper;
An exhaust fan for blowing indoor air discharged through the exhaust damper;
An induction fan provided on a ceiling of the room for circulating the air so that the air flow in the room is uniform;
An outside air temperature sensor for measuring a temperature of the outside air, an outside air humidity sensor for measuring a relative humidity of the outside air, and an indoor CO ₂ sensor for measuring a CO ₂ concentration of the outside air;
An indoor sensor unit including an indoor temperature sensor for measuring a temperature of the room air, an indoor humidity sensor for measuring a relative humidity of the indoor air, and an indoor CO ₂ sensor for measuring a CO ₂ concentration of the indoor air;
A human body detecting sensor for detecting a human body in the room;
A dust sensing sensor for sensing a dust concentration of the indoor air;
A fan filter unit for sucking the room air, filtering the sucked air using a dust filter, and discharging the filtered air to the room;
When the human body is sensed by the human body sensor and the CO ₂ concentration measured by the indoor CO ₂ sensor is equal to or higher than a preset upper limit value in the daytime mode in which the artificial light is illuminated and the plant performs the photosynthesis, An outside air introduction control mode is performed in which the outside air introduction rate is set differently according to a difference in temperature of the outside air,
A controller for performing a dust filtering mode in which the fan filter unit is operated for a set time when the dust concentration detected by the dust detection sensor is equal to or greater than a predetermined dust setting value in a night mode in which the artificial light is turned off and the plant breathed Dust control system of enclosed plant factories. The method according to claim 1 or 2,
Wherein,
When the set time passes after the dust filtering mode is started,
Comparing the dust concentration detected by the dust detection sensor with the dust setting value,
Wherein the fan filter unit is operated to perform ventilation when the dust concentration is greater than or equal to the dust set value. The method according to claim 1 or 2,
Wherein,
When the set time passes after the dust filtering mode is started,
Comparing the dust concentration detected by the dust detection sensor with the dust setting value,
An enthalpy control mode in which the enthalpy of the room air is compared with the enthalpy of the outside air when the dust concentration is less than the dust setting value and an indoor circulation mode in which indoor air is circulated without introduction of outside air And the ventilation is controlled in the set mode. The method according to claim 1 or 2,
Wherein,
When the CO ₂ concentration measured by the indoor CO ₂ sensor is less than the upper limit value and is equal to or higher than a predetermined lower limit value in the daytime mode,
Comparing the dust concentration detected by the dust detection sensor with the dust setting value,
And performs the dust filtering mode in which the fan filter unit is operated for a set time when the dust concentration is equal to or higher than the dust set value. The method according to claim 1 or 2,
Further comprising a dust filter differential pressure sensor for measuring a difference between a suction pressure and a discharge pressure of the fan filter unit,
Wherein the control unit alerts the replacement of the dust filter when the pressure difference detected by the dust filter differential pressure sensor is equal to or greater than a preset difference value. The method according to claim 1 or 2,
An outside air filter for filtering the outside air flowing into the room,
Further comprising an outside air filter differential pressure sensor for measuring a difference between a suction pressure and a discharge pressure of the outside air filter,
Wherein the control unit alerts the replacement of the outside air filter when the pressure difference detected by the outside air filter differential pressure sensor is equal to or greater than a predetermined difference value. The method of claim 4,
Wherein,
And compares the enthalpy of the room air and the enthalpy of the outside air when the enthalpy control mode is determined to be set,
If the enthalpy of the outside air is equal to or lower than the enthalpy of the room air,
Determining whether the relative humidity of the outside air is within a predetermined set humidity range if the temperature of the outside air is below the room set temperature,
And the outdoor air introduction control mode is performed when the relative humidity of the outdoor air is within the set humidity range. The method according to claim 1,
Wherein,
In the outside air introduction control mode,
Wherein the exhaust damper, the outside air damper and the circulating air damper are opened at a predetermined maximum opening degree when the difference between the temperature of the room air and the temperature of the outside air is less than a predetermined minimum value,
The outdoor damper and the circulating air damper are operated at an opening ratio set to be proportional to the difference in temperature when the difference between the temperature of the indoor air and the temperature of the outdoor air exceeds the minimum value and is equal to or less than a preset maximum value In addition,
Wherein the exhaust damper, the outside air damper, and the circulating air damper are opened at a predetermined minimum opening degree when the difference between the temperature of the room air and the temperature of the outside air exceeds the maximum value. The method of claim 2,
Wherein,
In the outside air introduction control mode,
If the difference between the indoor air temperature and the outdoor air temperature is equal to or less than a preset minimum value, the operating rate of the air supply fan and the operating rate of the exhaust fan are opened at a predetermined maximum operating rate,
If the difference between the indoor air temperature and the outdoor air temperature exceeds the minimum value and is equal to or less than a predetermined maximum value, the operating rate of the air supply fan and the operating rate of the exhaust fan are opened according to the operating rate set in proportion to the difference in temperature ,
Wherein the operating rate of the air supply fan and the operating rate of the air discharge fan are set to a predetermined minimum operating rate when the difference between the indoor air temperature and the ambient temperature exceeds the maximum value. A temperature / humidity measurement step of measuring the temperature and the relative humidity of the indoor air at a predetermined time interval and measuring the temperature and the relative humidity of the ambient air of the closed plant at a predetermined time interval in a sealed plant plant growing a plant for manufacturing pharmaceuticals Wow;
A day and night setting step of setting any one of a daytime mode in which the artificial light provided in the closed plant plant is lighted by the control unit to perform the photosynthesis of the plant and a nighttime mode in which the artificial light is turned off and the plant is only respiratory; ;
A human body sensing step of determining whether the human body detection sensor detects a human body in the room if the daytime mode is set in the day and night setting step;
When the human body is detected on the human body detection step, CO ₂ sensor is CO ₂ concentration measurement step of measuring a predetermined time interval the CO ₂ concentration of the interior and;
If the CO ₂ concentration of the CO ₂ concentration in the room measured at the measuring step the preset upper limit value or more, the outdoor air introduced to the control ventilated to different settings for the outside air introduction rate according to the difference in temperature and the temperature of the ambient air of the room air Performing a control mode;
If the CO of less than the above upper limit CO ₂ concentration in the room measured at a _second concentration measuring step and a predetermined lower limit value or more, the dust concentration is determined comparing with the dust set value previously set the dust concentration of the room air detected by the dust detecting sensor Wow;
Performing a dust filtering mode for filtering indoor air by operating the fan filter unit for a set time if the dust concentration is equal to or higher than the dust setting value in the dust concentration determination step;
A dust concentration re-judgment step of comparing the dust concentration of the room air detected by the dust detection sensor with the dust set value again when the set time has elapsed;
An enthalpy control mode for comparing the enthalpy of the room air with the enthalpy of the outside air to introduce outside air if the dust concentration is less than the dust set value in the dust concentration re-judgment step, An enthalpy control mode confirmation step of confirming which one of the indoor circulation modes is set;
And calculating enthalpy of the indoor air and enthalpy of the outdoor air based on enthalpy of the indoor air, enthalpy of the outdoor air, temperature of the outdoor air, temperature of the outdoor air, And determining whether the outdoor air introduction control mode is performed according to the relative humidity. The method of claim 11,
Wherein when the dust concentration is greater than or equal to the dust set value in the dust concentration re-determination step, the outside air introduction control mode is performed to ventilate the closed plant. The method of claim 11,
If the night mode is set in the day and night setting step,
Wherein the step of determining the dust, the step of performing the dust filtering mode, the step of determining the dust concentration, and the step of confirming the enthalpy control mode are sequentially performed. The method of claim 11,
A dust filter differential pressure sensor installed in the fan filter unit measures a difference between a suction pressure and a discharge pressure of the fan filter unit;
Further comprising the step of alarming the replacement of the dust filter if the difference in pressure sensed by the dust filter differential pressure sensor is equal to or greater than a preset difference value. The method of claim 11,
Measuring the difference between the suction pressure and the discharge pressure of the outside air filter for filtering the outside air flowing into the room by the outside air filter differential pressure sensor;
Further comprising the step of the control unit warning the replacement of the outside air filter if the difference in pressure sensed by the outside air filter differential pressure sensor is equal to or greater than a preset difference value. The method of claim 11,
Calculating enthalpy of the indoor air and enthalpy of the outdoor air when the enthalpy control mode is determined in the enthalpy control mode checking step,
If the enthalpy of the outside air is equal to or lower than the enthalpy of the room air,
Determining whether the relative humidity of the outside air is within a predetermined set humidity range if the temperature of the outside air is below the room set temperature,
And performing the outside air introduction control mode when the relative humidity of the outside air is within the set humidity range. The method of claim 11,
The closed plant plant may further include an outside air damper installed in an air supply duct for supplying air to the inside of the room and controlling an inflow flow rate of outside air flowing into the air supply duct and an exhaust duct for discharging air from the inside of the room, An exhaust damper for adjusting a flow rate of the indoor air discharged from the room and a connecting duct connected to the air supply duct and the exhaust duct to control the flow rate of the circulating air circulated to the room after being discharged from the room and humidifying coil that is installed in the return air damper, the air supply duct, is a CO ₂ supply device to supply CO ₂ in air flowing into the interior, it mounted to the air supply duct, the humidification of the air entering into the interior, And a cold / hot water coil installed in the air supply duct for heating or cooling the air flowing into the room, ,
In the outside air introduction control mode,
Wherein the exhaust damper, the outside air damper, and the circulating air damper are opened at a predetermined maximum opening degree when the difference between the temperature of the room air and the temperature of the outside air is less than a preset minimum value. The method of claim 11,
The closed plant plant may further include a thermo-hygrostat provided in the room for supplying a predetermined temperature and humidity of a predetermined humidity to the room, a CO ₂ supplying device for supplying CO ₂ to the room, An air damper for adjusting the flow rate of indoor air discharged from the room, an air supply fan for blowing outside air introduced into the outside air damper, And an induction fan provided in a ceiling of the room for circulating air supplied through the thermo-hygrostat. When the thermo-hygrostat is controlled by the package type thermo-hygrostat method,
Wherein the outdoor air introduction control mode includes an exhaust damper for regulating a discharge flow rate of the indoor air and an outdoor air damper for regulating an inflow flow rate of the outdoor air at a predetermined maximum opening degree,
Wherein the operation of the air supply fan and the air discharge fan is controlled at a preset maximum operation rate when the difference between the temperature of the indoor air and the temperature of the outside air is equal to or less than a preset minimum value.

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