KR102183009B1 - Control method of evaporative humidifier - Google Patents

Abstract

The present invention is a) the inlet side of the vaporization humidifier in communication with the room and the ventilation (RA) flows in, and the outlet side in communication with the room and discharged air supply (SA), the ventilation (RA) and air supply (SA) at each Measuring the temperature and humidity of, b) opening the water supply control valve of the vaporizing humidifier to supply water to the humidifying filter for a certain period of time per unit time, and c) the wet bulb temperature of the ventilation (RA), the inside of the humidifying filter. Measuring the temperature, humidity of ventilation (RA) and air supply (SA), respectively, and d) comparing the wet bulb temperature of the measured ventilation (RA) and the temperature inside the humidification filter, and the two values are the same, or The step of changing the ratio of the valve opening time and the valve closing time until the humidity of (SA) exceeds the preset value, and e) two values by comparing the wet bulb temperature of the ventilation (RA) and the temperature inside the humidification filter. The step of determining the maximum movable valve ratio, which is the ratio of the valve opening time and the valve closing time when the same or when the humidity of the supply air (SA) is higher than a preset value, and f) the water supply control valve is controlled at the maximum movable valve ratio Calculating the maximum amount of operation supply humidification based on the absolute humidity of the supply air (SA) and the absolute humidity of the ventilation (RA) measured during the period, and g) based on the calculated maximum operation supply humidification amount and the indoor setting conditions, the Including the step of controlling the water supply control valve, the humidifying filter medium of the humidifier can maintain a certain amount of wetness regardless of fluctuations in the humidification load indoors, excessive water supply can be prevented in advance, and humidification efficiency can be optimized. Of course, it provides a control method of an evaporative humidifier that can continuously perform stable humidification and minimize unnecessary waste of water (resource).

Description

Water supply control method of evaporative humidifier {Control method of evaporative humidifier}

The present invention relates to a control method of an evaporative humidifier provided inside an air conditioner that adjusts the indoor temperature and humidity to a set temperature and humidity, and more specifically, a certain amount of humidifying filter media of the humidifier regardless of changes in the humidification load in the room. It is possible to maintain the moist state of water, prevent excessive water supply in advance, optimize humidification efficiency, and continuously perform stable humidification, and minimize unnecessary waste of water (resource). It relates to a control method of an evaporative humidifier.

In general, air conditioners and thermo-hygrostats purify, cool, and dehumidify the inhaled air in the device, and perform the functions of heating and humidifying the air alone or in a number of functions to supply air to the room through a blower. And an air filter (air filter), a heat exchanger, a cooler, a humidifier, a heater, a blower, etc. inside the casing of the device to perform the function of maintaining the temperature and humidity.

The combination method of these devices can be variously combined depending on the conditions of air conditioning, the size of the machine room, the nature of the heat load, and the budget, and the humidifier is used and operated to control the humidity or supply moisture in the room. Depending on the method, steam, moisture, and evaporation are provided, but the water supply through the nozzle is distributed from the top of the humidifying filter (element) to be wetted and the air passing through the humidifying filter (element) is retained and the water is vaporized with sensible heat. Evaporation type humidifiers are typically used.

The evaporation type humidifier is divided into a rotary type, a capillary type, and a direct type. The direct type is a technology that supplies water to the humidifying filter, absorbs the water, and passes air to generate humidified air by evaporation.

This evaporation type humidifier is equipped with a drip tray under the humidifying filter, so that the water discharged to the lower part of the humidifying filter is received as a drip tray, and the received water is resupplied to the humidifying filter through a pump or drained to the outside. .

However, when the water received from the drip tray is resupplied as a humidification filter as described above, there is a problem that the water remaining in the drip tray is easily contaminated when the operation is stopped under high temperature and dry conditions.

In other words, even if the residual water is contaminated by bacteria and bacteria, when a conventional vaporizing humidifier is operated, the contaminated water is vaporized and provided indoors, thereby causing serious problems such as infection.

In addition, if the humidification filter for humidification lasts for a certain period of time with water soaked in it, the humidification filter acts as a medium for mold, bacteria, and bacteria, and eventually discharges contaminated air into the room and contaminates the indoor environment. have.

For this reason, in recent years, drainage is made to the outside, but in this case, there is a problem that the waste of water supplied to the humidification filter becomes severe.

As a prior art, reference may be made to Public Utility Model No. 20-2010-0004482 (2010.04.30).

In the present invention, regardless of fluctuations in the humidification load in the room, the humidifying filter medium of the humidifier can maintain a certain amount of wet state, prevent excessive water supply in advance, optimize the humidification efficiency, and continuously perform stable humidification. Its purpose is to provide a control method of an evaporative humidifier that can be done and minimize waste of unnecessary water (resource).

The control method of an evaporative humidifier according to the present invention includes: a) the inlet side of the evaporative humidifier in communication with the room and through which ventilation (RA) is introduced, and the outlet side in which the air supply (SA) is discharged through communication with the room, and the ventilation (RA) and measuring the temperature and humidity of the air supply (SA); b) opening the water supply control valve of the evaporative humidifier to supply the humidification filter for a certain period of time; and c) ventilation (RA) Measuring the wet bulb temperature, the temperature inside the humidification filter, and the humidity of ventilation (RA) and air supply (SA) respectively, and d) comparing the wet bulb temperature of the measured ventilation (RA) with the temperature inside the humidification filter. The step of changing the ratio of the valve opening time and the valve closing time until the values are the same or the humidity of the supply air (SA) is greater than or equal to the preset value, e) the wet bulb temperature of the ventilation (RA) and the humidification filter material Comparing the internal temperature to determine the maximum operating valve ratio, which is the ratio of the valve opening time and the valve closing time when the two values are the same or when the humidity of the supply air (SA) is higher than a preset value, and f) maximum operation Calculating the maximum amount of operation supply humidification based on the absolute humidity of the supply air (SA) and the absolute humidity of ventilation (RA) measured while the water supply control valve is controlled at the valve ratio, and g) the calculated maximum operation supply humidification amount and the room And controlling the water supply control valve based on the set condition of.

In this case, it is preferable that the water supply control valve of step d) according to the present invention gradually increases the ratio of the valve opening time and the valve closing time at a predetermined ratio.

And in the step of calculating the maximum movable supply humidification amount based on the absolute humidity of the supply air (SA) and the absolute humidity of the ventilation (RA) in the step f) according to the present invention, the calculation of the maximum movable supply humidification amount is the maximum movable valve When the water supply control valve is controlled by ratio, it is preferable to calculate the difference between the absolute humidity of the supply air SA and the absolute humidity of the ventilation RA.

Here, in the step g) according to the present invention, the controlling of the water supply control valve includes calculating a set absolute humidity value based on a set temperature and humidity in the room, and calculating the temperature and humidity of the currently introduced ventilation. Based on the steps of calculating the current absolute humidity value of ventilation flowing from the room, calculating the required supply humidification amount using the current absolute humidity value and the set absolute humidity value, and the required supply humidification amount and the maximum operation And controlling the water supply control valve by adjusting a valve opening time ratio based on the supplied humidification amount.

The effects exhibited by the control method of the vaporization humidifier according to the present invention are as follows.

Regardless of fluctuations in the humidification load indoors, the humidifying filter medium of the humidifier can maintain a certain amount of moist condition and has the effect of preventing excessive water supply.

Not only can the humidification efficiency be optimized, but also stable humidification can be continuously performed, and unnecessary waste of water (resource) can be minimized.

1 is an exemplary view showing an evaporative humidifier according to an embodiment of the present invention.
2 is a block diagram showing step by step a control method of an evaporative humidifier according to an embodiment of the present invention.
3 is a block diagram showing stepwise control of a water supply control valve according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, and at the time of the present application, they are equivalent to It should be understood that there may be variations.

In the present invention, regardless of changes in the humidification load according to the preset indoor humidity, the humidifying filter medium of the humidifier can maintain a certain amount of wet state, prevent excessive water supply in advance, and optimize the humidification efficiency. It relates to a control method of an evaporative humidifier that can continuously perform stable humidification and minimize waste of unnecessary water (resource), and will be described in more detail with reference to the drawings.

First, looking at the vaporization humidifier according to an embodiment of the present invention with reference to FIG. 1, an inlet 11 is formed on one side of the housing 10 constituting the exterior of the vaporization humidifier, and an outlet 12 is formed on the other side. Is formed, and the inlet 11 is connected to the room and is a part for introducing the ventilation (RA) discharged from the room into the interior of the housing 10, and the discharge port 12 is connected to the room, and the housing ( It is a part that discharges the humidified air supply (SA) from the inside of 10) to the room.

At this time, a temperature sensor and a humidity sensor are provided on the ship of the inlet 11 and the outlet 12, and the temperature and humidity of ventilation (RA) introduced from the room through the inlet 11 and the discharge port 12 The temperature and humidity of the air supply (SA) discharged to the room is measured, and the temperature and humidity of the ventilation (RA) and the temperature and humidity of the air supply (SA) measured here are transmitted to the controller 60.

In addition, a filter 13 may be installed at the inlet 11, which filters foreign substances mixed in the ventilation RA.

In addition, a blowing means 20 is provided inside the housing 10, the blowing means 20 forming an airflow flowing into and out of the housing 10, and the inside of the housing 10 A vaporization part 30 is provided between the blowing means 20 and the discharge port 12.

The vaporization unit 30 includes a humidification filter material 32 that is wetted with water in the case 31, and supplies water (water) to the upper side of the humidification filter material 32 by the blowing means 20. As the formed airflow passes through the humidification filter 32, the water supply from which the humidification filter 32 is tilted is evaporated, thereby humidifying the air supply SA.

At this time, a temperature sensor 33 is built inside the lower side of the humidification filter 32 of the vaporization unit 30, and the temperature inside the humidification filter 32 is measured through the temperature sensor 33 of the humidification filter 32 can do.

In addition, a water supply pipe 34 is provided at the upper end of the vaporization part 30, and a watering nozzle 35 is provided at the lower end of the water supply pipe 34, and the watering nozzle 35 is provided with a lower part of the water supply pipe 34. It protrudes toward and sprays the water supply (water) to the humidification filter (32).

In addition, a water supply source 40 is connected to one end of the water supply pipe 34, and a water supply control valve for adjusting water supply between the water supply source 40 and the vaporization unit 30 among the water supply pipes 34 ( 50).

The water supply control valve 50 allows a corresponding amount of water (water) corresponding to the set humidity to be provided to the vaporization unit 30, and the water supply control valve 50 is electrically connected to the control unit 60, It is preferable that the opening and closing is controlled by the control unit 60.

The control method of the vaporization humidifier according to the above configuration is as follows.

The control method of an evaporative humidifier according to an embodiment of the present invention with reference to FIGS. 2 and 3 is first, in step a), the inlet 11 side of the evaporative humidifier through which ventilation (RA) is in communication with the room, The temperature and humidity of each of the ventilation (RA) and the supply air (SA) are measured at the outlet 12 through which the air supply (SA) is discharged in communication with the room (S110).

At this time, the temperature and humidity of ventilation (RA) and air supply (SA) are measured and measured through temperature sensors and humidity sensors provided on the inlet 11 and outlet 12 formed in the housing 10 of the evaporative humidifier. The temperature and humidity of each of the ventilation (RA) and supply air (SA) are transmitted to the control unit 60, and the temperature and humidity of each of the ventilation (RA) and supply air (SA) transmitted to the control unit 60 are units Recorded and saved by time.

Next, in step b), the water supply control valve 50 of the evaporative humidifier is opened, and water is supplied to the humidifying filter medium 32 of the humidifier for a predetermined time per unit time (S120)

At this time, when water is supplied to the humidifying filter material 32 by opening of the water supply control valve 50, the water supply goes downward from the top of the humidification filter material 32 for a certain period of time and decreases in the humidification filter material 32, Humidification is achieved by air (ventilation (SA)) passing through the humidifying filter material 32.

Next, in step c), the wet bulb temperature of the ventilation (RA), the temperature inside the humidification filter (32), the humidity of the ventilation (RA) and the supply air (SA) are respectively measured (S130)

At this time, a temperature sensor and a humidity sensor provided on the line of the inlet 11 and the outlet 12 measure the temperature and humidity of the ventilation (RA) and supply air (SA), and the temperature built in the lower part of the humidification filter (32) The sensor 33 measures the temperature inside the humidifying filter material 32, respectively, and the measured temperature and humidity of the ventilation (RA), the temperature and humidity of the supply air (SA), and the temperature inside the humidifying filter material 32 are controlled by the controller ( 60), and the control unit 60 uses the absolute humidity of the ventilation (RA) using the measured temperature and humidity of the ventilation (RA), and the supply air (SA) using the temperature and humidity of the supply air (SA). Absolute humidity can be calculated.

Next, in step d), the measured wet bulb temperature of the ventilation (RA) and the temperature inside the humidification filter (32) are compared, and the two values are the same, or the humidity of the supply air (SA) is higher than the preset value. The ratio of the valve opening time and the valve closing time is changed until (S140)

At this time, the ratio of the valve opening time and the valve closing time is preferably to change the ratio of the valve opening time and the valve closing time for each unit time, and preferably, it is preferable to gradually increase the ratio of the valve opening time and the valve closing time.

Therefore, the opening of the water supply control valve 50 gradually increases the opening time ratio for each unit time at a certain rate. If the opening time is 0 seconds from the initial unit time, the closing time is 100 seconds, and then at the corresponding unit time If the opening time is 5 seconds, the closing time is 95 seconds, and in the next corresponding unit time, if the opening time is 10 seconds, the closing time can be controlled to gradually increase to 90 seconds.

Next is step e), comparing the wet bulb temperature of the ventilation (RA) and the temperature inside the humidifying filter (32), and opening the valve when the two values are the same or the humidity of the supply air (SA) is higher than a preset value. The maximum operating valve ratio, which is the ratio of the time and the valve closing time, is determined (S150).

At this time, the measured wet bulb temperature of the ventilation (RA) and the temperature inside the humidification filter (32) are compared for each unit time, and the wet bulb temperature of the ventilation (RA) and the temperature inside the humidification filter (32) at the corresponding unit time If is equal to each other, the control unit 60 determines the maximum movable valve ratio, which is the ratio of the valve opening time and the valve closing time of the water supply control valve 50 based on the corresponding time point.

Alternatively, when the measured humidity of the supply air SA is measured to be more than a preset value (for example, humidity 90% or more), the control unit 60 determines the valve opening time of the water supply control valve 50 based on the time point. The maximum operating valve ratio, which is the ratio of the valve closing time and the valve closing time, is determined.

Next, in step f), the maximum movable supply humidification amount is calculated based on the absolute humidity of the supply air SA and the absolute humidity of the ventilation RA measured while the water supply control valve 50 is controlled at the maximum movable valve ratio. .(S160)

At this time, the calculation of the maximum movable supply humidification amount is the absolute humidity of the supply air (SA) and the ventilation (RA) as shown in [Equation 1] below when the water supply control valve 50 is controlled by the maximum movable valve ratio. It is calculated by car.

[Equation 1]

Maximum operating supply humidification = Absolute humidity of supply air (SA)-Absolute humidity of ventilation (RA)

Next, in step g), the water supply control valve 50 supplied to the humidification filter 32, which is a vaporizer, is controlled based on the maximum movable supply humidification amount calculated by the step f) and the indoor setting conditions. (S170)

Here, the control of the water supply control valve 50 based on the calculated maximum movable supply humidification amount and the indoor setting condition, which is the step g) with reference to FIG. 3, is first performed by the controller 60 of the set absolute humidity and ventilation (RA). The current absolute humidity is calculated, and the set absolute humidity is calculated based on the set temperature and humidity in the room, and a set absolute humidity value is calculated (S171).

Next, the current absolute humidity of the ventilation RA is calculated based on the temperature and humidity of the ventilation RA that is currently flowing in, and the current absolute humidity value of the ventilation RA that is currently introduced from the room is calculated (S172).

Next, when the current absolute humidity value of the ventilation RA is calculated, the required supply humidification amount is calculated using the current absolute humidity value and the set absolute humidity value of the ventilation RA (S173)

At this time, the required supply humidification amount is calculated as the difference between the set absolute humidity value and the current absolute humidity value of ventilation (RA) as shown in [Equation 2] below.

[Equation 2]

Required humidification amount = Set absolute humidity value-Current absolute humidity value of ventilation (RA)

Next, when the required supply humidification amount is calculated as described above, the water supply control is performed by adjusting the valve opening time ratio for each unit time using the valve opening time ratio of the maximum operating valve ratio based on the required supply humidification amount and the maximum operating supply humidification amount. Control the valve 50 (S174)

At this time, the ratio of the valve opening time of the water supply control valve 50 is calculated by the following [Equation 3],

[Equation 3]

For example, if the required supply humidification amount is calculated as 10kg/㎥, the maximum operation supply humidification amount is 100kg/㎥, and the maximum valve closing ratio and the maximum operation valve ratio of the water supply control valve 50 are 50:50, and the previous unit time If the valve opening time ratio at is 5,

As follows

Since the calculated value is 10, the water supply control valve 50 by adjusting the valve opening time ratio of the water supply control valve 50 for 10 seconds and the valve closing time ratio for 90 seconds based on the corresponding unit time of 100 seconds. Control the opening and closing of

Therefore, the opening time of the water supply control valve is controlled by adjusting the valve opening time ratio for each unit time based on the required supply humidification amount and the maximum operating supply humidification amount, so that the humidifying filter material of the humidifier is in a certain amount of wet state regardless of changes in the indoor humidification load. It is possible to maintain and prevent excessive water supply in advance, optimize humidification efficiency, and continuously perform stable humidification, and minimize unnecessary waste of water (resources).

The present invention has been described with reference to the embodiments shown in the drawings, but these are only exemplary, and those of ordinary skill in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: housing
11: inlet
12: discharge port
13: filter
20: ventilation means
30: vaporizer
31: case
32: humidification filter material
33: temperature sensor
34: water supply pipe
35: sprinkling nozzle
40: water source
50: water supply control valve
60: control unit

Claims (8)

a) The temperature of the ventilation (RA) and air supply (SA) at the inlet side of the evaporative humidifier in communication with the room and through which ventilation (RA) flows in, and the outlet side in communication with the room and discharge air supply air (SA) Measuring humidity;
b) opening the water supply control valve of the vaporizing humidifier to supply the humidification filter material for a predetermined time per unit time;
c) measuring the wet bulb temperature of the ventilation (RA), the temperature inside the humidification filter, and the humidity of the ventilation (RA) and air supply (SA), respectively;
d) By comparing the measured wet bulb temperature of the ventilation (RA) and the temperature inside the humidified filter medium, the value of the valve opening time and the valve closing time until the two values are the same or the humidity of the supply air (SA) is higher than the preset value. Changing the ratio;
e) The ratio of the valve opening time and the valve closing time when the two values are the same or when the humidity of the supply air (SA) is higher than a preset value by comparing the wet bulb temperature of the ventilation (RA) with the temperature inside the humidification filter. Determining a maximum movable valve ratio;
f) calculating a maximum movable supply humidification amount based on the measured absolute humidity of the supply air (SA) and the absolute humidity of ventilation (RA) while the water supply control valve is controlled at the maximum movable valve ratio; And
g) A control method of an evaporative humidifier comprising the step of controlling the water supply control valve based on the calculated maximum operating supply humidification amount and indoor setting conditions.
The method according to claim 1,
The water supply control valve of step d),
A control method of an evaporative humidifier, characterized in that the ratio of the valve opening time and the valve closing time is gradually increased at a predetermined ratio.
The method according to claim 2,
The control method of an evaporative humidifier, characterized in that the obesity of the valve opening time of the valve opening time and the valve closing time is gradually increased at a predetermined ratio.
The method according to claim 1,
In the step of calculating the maximum movable supply humidification amount based on the absolute humidity of the supply air (SA) and the absolute humidity of the ventilation (RA) in step f),
The calculation of the maximum movable supply humidification amount is calculated as a difference between the absolute humidity of the supply air (SA) and the absolute humidity of the ventilation (RA) when the water supply control valve is controlled at the maximum movable valve ratio. .
The method of claim 4,
In the step g), the step of controlling the water supply control valve,
Calculating a set absolute humidity value based on the set temperature and humidity in the room;
Calculating a current absolute humidity value of the ventilation (RA) currently introduced from the room, based on the temperature and humidity of the ventilation (RA) currently introduced;
Calculating a required amount of humidification by using the current absolute humidity value and the set absolute humidity value;
And controlling the water supply control valve based on the required supply humidification amount and the maximum operation supply humidification amount.
The method of claim 5,
The required amount of humidification is
A control method of an evaporative humidifier calculating a difference between the set absolute humidity value and a current absolute humidity value of ventilation (RA).
The method of claim 5,
Control of the water supply control valve
And controlling and controlling a valve opening time ratio based on the required supply humidification amount and the maximum operating supply humidification amount.
The method of claim 7,
The valve opening time ratio is
A control method of an evaporative humidifier calculated by Equation 3 below by using a valve opening time ratio among a maximum movable valve ratio based on the required supply humidification amount and the maximum operation supply humidification amount.
[Equation 3]

(Here, α is the valve opening ratio in the previous unit time zone.)

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